/** * The MIT License (MIT) * * Copyright (c) 2013 p2.js authors * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ !function(e){"object"==typeof exports?module.exports=e():"function"==typeof define&&define.amd?define('p2', (function() { return this.p2 = e(); })()):"undefined"!=typeof window?window.p2=e():"undefined"!=typeof global?self.p2=e():"undefined"!=typeof self&&(self.p2=e())}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o remaining) { length = remaining } } // must be an even number of digits var strLen = string.length if (strLen % 2 !== 0) { throw new Error('Invalid hex string') } if (length > strLen / 2) { length = strLen / 2 } for (var i = 0; i < length; i++) { var byte = parseInt(string.substr(i * 2, 2), 16) if (isNaN(byte)) throw new Error('Invalid hex string') buf[offset + i] = byte } Buffer._charsWritten = i * 2 return i } function _utf8Write (buf, string, offset, length) { var bytes, pos return Buffer._charsWritten = blitBuffer(utf8ToBytes(string), buf, offset, length) } function _asciiWrite (buf, string, offset, length) { var bytes, pos return Buffer._charsWritten = blitBuffer(asciiToBytes(string), buf, offset, length) } function _binaryWrite (buf, string, offset, length) { return _asciiWrite(buf, string, offset, length) } function _base64Write (buf, string, offset, length) { var bytes, pos return Buffer._charsWritten = blitBuffer(base64ToBytes(string), buf, offset, length) } function BufferWrite (string, offset, length, encoding) { // Support both (string, offset, length, encoding) // and the legacy (string, encoding, offset, length) if (isFinite(offset)) { if (!isFinite(length)) { encoding = length length = undefined } } else { // legacy var swap = encoding encoding = offset offset = length length = swap } offset = Number(offset) || 0 var remaining = this.length - offset if (!length) { length = remaining } else { length = Number(length) if (length > remaining) { length = remaining } } encoding = String(encoding || 'utf8').toLowerCase() switch (encoding) { case 'hex': return _hexWrite(this, string, offset, length) case 'utf8': case 'utf-8': return _utf8Write(this, string, offset, length) case 'ascii': return _asciiWrite(this, string, offset, length) case 'binary': return _binaryWrite(this, string, offset, length) case 'base64': return _base64Write(this, string, offset, length) default: throw new Error('Unknown encoding') } } function BufferToString (encoding, start, end) { var self = (this instanceof ProxyBuffer) ? this._proxy : this encoding = String(encoding || 'utf8').toLowerCase() start = Number(start) || 0 end = (end !== undefined) ? Number(end) : end = self.length // Fastpath empty strings if (end === start) return '' switch (encoding) { case 'hex': return _hexSlice(self, start, end) case 'utf8': case 'utf-8': return _utf8Slice(self, start, end) case 'ascii': return _asciiSlice(self, start, end) case 'binary': return _binarySlice(self, start, end) case 'base64': return _base64Slice(self, start, end) default: throw new Error('Unknown encoding') } } function BufferToJSON () { return { type: 'Buffer', data: Array.prototype.slice.call(this, 0) } } // copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length) function BufferCopy (target, target_start, start, end) { var source = this if (!start) start = 0 if (!end && end !== 0) end = this.length if (!target_start) target_start = 0 // Copy 0 bytes; we're done if (end === start) return if (target.length === 0 || source.length === 0) return // Fatal error conditions if (end < start) throw new Error('sourceEnd < sourceStart') if (target_start < 0 || target_start >= target.length) throw new Error('targetStart out of bounds') if (start < 0 || start >= source.length) throw new Error('sourceStart out of bounds') if (end < 0 || end > source.length) throw new Error('sourceEnd out of bounds') // Are we oob? if (end > this.length) end = this.length if (target.length - target_start < end - start) end = target.length - target_start + start // copy! for (var i = 0; i < end - start; i++) target[i + target_start] = this[i + start] } function _base64Slice (buf, start, end) { var bytes = buf.slice(start, end) return require('base64-js').fromByteArray(bytes) } function _utf8Slice (buf, start, end) { var bytes = buf.slice(start, end) var res = '' var tmp = '' var i = 0 while (i < bytes.length) { if (bytes[i] <= 0x7F) { res += decodeUtf8Char(tmp) + String.fromCharCode(bytes[i]) tmp = '' } else { tmp += '%' + bytes[i].toString(16) } i++ } return res + decodeUtf8Char(tmp) } function _asciiSlice (buf, start, end) { var bytes = buf.slice(start, end) var ret = '' for (var i = 0; i < bytes.length; i++) ret += String.fromCharCode(bytes[i]) return ret } function _binarySlice (buf, start, end) { return _asciiSlice(buf, start, end) } function _hexSlice (buf, start, end) { var len = buf.length if (!start || start < 0) start = 0 if (!end || end < 0 || end > len) end = len var out = '' for (var i = start; i < end; i++) { out += toHex(buf[i]) } return out } // TODO: add test that modifying the new buffer slice will modify memory in the // original buffer! Use code from: // http://nodejs.org/api/buffer.html#buffer_buf_slice_start_end function BufferSlice (start, end) { var len = this.length start = clamp(start, len, 0) end = clamp(end, len, len) return augment(this.subarray(start, end)) // Uint8Array built-in method } function BufferReadUInt8 (offset, noAssert) { var buf = this if (!noAssert) { assert(offset !== undefined && offset !== null, 'missing offset') assert(offset < buf.length, 'Trying to read beyond buffer length') } if (offset >= buf.length) return return buf[offset] } function _readUInt16 (buf, offset, littleEndian, noAssert) { if (!noAssert) { assert(typeof (littleEndian) === 'boolean', 'missing or invalid endian') assert(offset !== undefined && offset !== null, 'missing offset') assert(offset + 1 < buf.length, 'Trying to read beyond buffer length') } var len = buf.length if (offset >= len) { return } else if (offset + 1 === len) { var dv = new xDataView(new xArrayBuffer(2)) dv.setUint8(0, buf[len - 1]) return dv.getUint16(0, littleEndian) } else { return buf._dataview.getUint16(offset, littleEndian) } } function BufferReadUInt16LE (offset, noAssert) { return _readUInt16(this, offset, true, noAssert) } function BufferReadUInt16BE (offset, noAssert) { return _readUInt16(this, offset, false, noAssert) } function _readUInt32 (buf, offset, littleEndian, noAssert) { if (!noAssert) { assert(typeof (littleEndian) === 'boolean', 'missing or invalid endian') assert(offset !== undefined && offset !== null, 'missing offset') assert(offset + 3 < buf.length, 'Trying to read beyond buffer length') } var len = buf.length if (offset >= len) { return } else if (offset + 3 >= len) { var dv = new xDataView(new xArrayBuffer(4)) for (var i = 0; i + offset < len; i++) { dv.setUint8(i, buf[i + offset]) } return dv.getUint32(0, littleEndian) } else { return buf._dataview.getUint32(offset, littleEndian) } } function BufferReadUInt32LE (offset, noAssert) { return _readUInt32(this, offset, true, noAssert) } function BufferReadUInt32BE (offset, noAssert) { return _readUInt32(this, offset, false, noAssert) } function BufferReadInt8 (offset, noAssert) { var buf = this if (!noAssert) { assert(offset !== undefined && offset !== null, 'missing offset') assert(offset < buf.length, 'Trying to read beyond buffer length') } if (offset >= buf.length) return return buf._dataview.getInt8(offset) } function _readInt16 (buf, offset, littleEndian, noAssert) { if (!noAssert) { assert(typeof (littleEndian) === 'boolean', 'missing or invalid endian') assert(offset !== undefined && offset !== null, 'missing offset') assert(offset + 1 < buf.length, 'Trying to read beyond buffer length') } var len = buf.length if (offset >= len) { return } else if (offset + 1 === len) { var dv = new xDataView(new xArrayBuffer(2)) dv.setUint8(0, buf[len - 1]) return dv.getInt16(0, littleEndian) } else { return buf._dataview.getInt16(offset, littleEndian) } } function BufferReadInt16LE (offset, noAssert) { return _readInt16(this, offset, true, noAssert) } function BufferReadInt16BE (offset, noAssert) { return _readInt16(this, offset, false, noAssert) } function _readInt32 (buf, offset, littleEndian, noAssert) { if (!noAssert) { assert(typeof (littleEndian) === 'boolean', 'missing or invalid endian') assert(offset !== undefined && offset !== null, 'missing offset') assert(offset + 3 < buf.length, 'Trying to read beyond buffer length') } var len = buf.length if (offset >= len) { return } else if (offset + 3 >= len) { var dv = new xDataView(new xArrayBuffer(4)) for (var i = 0; i + offset < len; i++) { dv.setUint8(i, buf[i + offset]) } return dv.getInt32(0, littleEndian) } else { return buf._dataview.getInt32(offset, littleEndian) } } function BufferReadInt32LE (offset, noAssert) { return _readInt32(this, offset, true, noAssert) } function BufferReadInt32BE (offset, noAssert) { return _readInt32(this, offset, false, noAssert) } function _readFloat (buf, offset, littleEndian, noAssert) { if (!noAssert) { assert(typeof (littleEndian) === 'boolean', 'missing or invalid endian') assert(offset + 3 < buf.length, 'Trying to read beyond buffer length') } return buf._dataview.getFloat32(offset, littleEndian) } function BufferReadFloatLE (offset, noAssert) { return _readFloat(this, offset, true, noAssert) } function BufferReadFloatBE (offset, noAssert) { return _readFloat(this, offset, false, noAssert) } function _readDouble (buf, offset, littleEndian, noAssert) { if (!noAssert) { assert(typeof (littleEndian) === 'boolean', 'missing or invalid endian') assert(offset + 7 < buf.length, 'Trying to read beyond buffer length') } return buf._dataview.getFloat64(offset, littleEndian) } function BufferReadDoubleLE (offset, noAssert) { return _readDouble(this, offset, true, noAssert) } function BufferReadDoubleBE (offset, noAssert) { return _readDouble(this, offset, false, noAssert) } function BufferWriteUInt8 (value, offset, noAssert) { var buf = this if (!noAssert) { assert(value !== undefined && value !== null, 'missing value') assert(offset !== undefined && offset !== null, 'missing offset') assert(offset < buf.length, 'trying to write beyond buffer length') verifuint(value, 0xff) } if (offset >= buf.length) return buf[offset] = value } function _writeUInt16 (buf, value, offset, littleEndian, noAssert) { if (!noAssert) { assert(value !== undefined && value !== null, 'missing value') assert(typeof (littleEndian) === 'boolean', 'missing or invalid endian') assert(offset !== undefined && offset !== null, 'missing offset') assert(offset + 1 < buf.length, 'trying to write beyond buffer length') verifuint(value, 0xffff) } var len = buf.length if (offset >= len) { return } else if (offset + 1 === len) { var dv = new xDataView(new xArrayBuffer(2)) dv.setUint16(0, value, littleEndian) buf[offset] = dv.getUint8(0) } else { buf._dataview.setUint16(offset, value, littleEndian) } } function BufferWriteUInt16LE (value, offset, noAssert) { _writeUInt16(this, value, offset, true, noAssert) } function BufferWriteUInt16BE (value, offset, noAssert) { _writeUInt16(this, value, offset, false, noAssert) } function _writeUInt32 (buf, value, offset, littleEndian, noAssert) { if (!noAssert) { assert(value !== undefined && value !== null, 'missing value') assert(typeof (littleEndian) === 'boolean', 'missing or invalid endian') assert(offset !== undefined && offset !== null, 'missing offset') assert(offset + 3 < buf.length, 'trying to write beyond buffer length') verifuint(value, 0xffffffff) } var len = buf.length if (offset >= len) { return } else if (offset + 3 >= len) { var dv = new xDataView(new xArrayBuffer(4)) dv.setUint32(0, value, littleEndian) for (var i = 0; i + offset < len; i++) { buf[i + offset] = dv.getUint8(i) } } else { buf._dataview.setUint32(offset, value, littleEndian) } } function BufferWriteUInt32LE (value, offset, noAssert) { _writeUInt32(this, value, offset, true, noAssert) } function BufferWriteUInt32BE (value, offset, noAssert) { _writeUInt32(this, value, offset, false, noAssert) } function BufferWriteInt8 (value, offset, noAssert) { var buf = this if (!noAssert) { assert(value !== undefined && value !== null, 'missing value') assert(offset !== undefined && offset !== null, 'missing offset') assert(offset < buf.length, 'Trying to write beyond buffer length') verifsint(value, 0x7f, -0x80) } if (offset >= buf.length) return buf._dataview.setInt8(offset, value) } function _writeInt16 (buf, value, offset, littleEndian, noAssert) { if (!noAssert) { assert(value !== undefined && value !== null, 'missing value') assert(typeof (littleEndian) === 'boolean', 'missing or invalid endian') assert(offset !== undefined && offset !== null, 'missing offset') assert(offset + 1 < buf.length, 'Trying to write beyond buffer length') verifsint(value, 0x7fff, -0x8000) } var len = buf.length if (offset >= len) { return } else if (offset + 1 === len) { var dv = new xDataView(new xArrayBuffer(2)) dv.setInt16(0, value, littleEndian) buf[offset] = dv.getUint8(0) } else { buf._dataview.setInt16(offset, value, littleEndian) } } function BufferWriteInt16LE (value, offset, noAssert) { _writeInt16(this, value, offset, true, noAssert) } function BufferWriteInt16BE (value, offset, noAssert) { _writeInt16(this, value, offset, false, noAssert) } function _writeInt32 (buf, value, offset, littleEndian, noAssert) { if (!noAssert) { assert(value !== undefined && value !== null, 'missing value') assert(typeof (littleEndian) === 'boolean', 'missing or invalid endian') assert(offset !== undefined && offset !== null, 'missing offset') assert(offset + 3 < buf.length, 'Trying to write beyond buffer length') verifsint(value, 0x7fffffff, -0x80000000) } var len = buf.length if (offset >= len) { return } else if (offset + 3 >= len) { var dv = new xDataView(new xArrayBuffer(4)) dv.setInt32(0, value, littleEndian) for (var i = 0; i + offset < len; i++) { buf[i + offset] = dv.getUint8(i) } } else { buf._dataview.setInt32(offset, value, littleEndian) } } function BufferWriteInt32LE (value, offset, noAssert) { _writeInt32(this, value, offset, true, noAssert) } function BufferWriteInt32BE (value, offset, noAssert) { _writeInt32(this, value, offset, false, noAssert) } function _writeFloat (buf, value, offset, littleEndian, noAssert) { if (!noAssert) { assert(value !== undefined && value !== null, 'missing value') assert(typeof (littleEndian) === 'boolean', 'missing or invalid endian') assert(offset !== undefined && offset !== null, 'missing offset') assert(offset + 3 < buf.length, 'Trying to write beyond buffer length') verifIEEE754(value, 3.4028234663852886e+38, -3.4028234663852886e+38) } var len = buf.length if (offset >= len) { return } else if (offset + 3 >= len) { var dv = new xDataView(new xArrayBuffer(4)) dv.setFloat32(0, value, littleEndian) for (var i = 0; i + offset < len; i++) { buf[i + offset] = dv.getUint8(i) } } else { buf._dataview.setFloat32(offset, value, littleEndian) } } function BufferWriteFloatLE (value, offset, noAssert) { _writeFloat(this, value, offset, true, noAssert) } function BufferWriteFloatBE (value, offset, noAssert) { _writeFloat(this, value, offset, false, noAssert) } function _writeDouble (buf, value, offset, littleEndian, noAssert) { if (!noAssert) { assert(value !== undefined && value !== null, 'missing value') assert(typeof (littleEndian) === 'boolean', 'missing or invalid endian') assert(offset !== undefined && offset !== null, 'missing offset') assert(offset + 7 < buf.length, 'Trying to write beyond buffer length') verifIEEE754(value, 1.7976931348623157E+308, -1.7976931348623157E+308) } var len = buf.length if (offset >= len) { return } else if (offset + 7 >= len) { var dv = new xDataView(new xArrayBuffer(8)) dv.setFloat64(0, value, littleEndian) for (var i = 0; i + offset < len; i++) { buf[i + offset] = dv.getUint8(i) } } else { buf._dataview.setFloat64(offset, value, littleEndian) } } function BufferWriteDoubleLE (value, offset, noAssert) { _writeDouble(this, value, offset, true, noAssert) } function BufferWriteDoubleBE (value, offset, noAssert) { _writeDouble(this, value, offset, false, noAssert) } // fill(value, start=0, end=buffer.length) function BufferFill (value, start, end) { if (!value) value = 0 if (!start) start = 0 if (!end) end = this.length if (typeof value === 'string') { value = value.charCodeAt(0) } if (typeof value !== 'number' || isNaN(value)) { throw new Error('value is not a number') } if (end < start) throw new Error('end < start') // Fill 0 bytes; we're done if (end === start) return if (this.length === 0) return if (start < 0 || start >= this.length) { throw new Error('start out of bounds') } if (end < 0 || end > this.length) { throw new Error('end out of bounds') } for (var i = start; i < end; i++) { this[i] = value } } function BufferInspect () { var out = [] var len = this.length for (var i = 0; i < len; i++) { out[i] = toHex(this[i]) if (i === exports.INSPECT_MAX_BYTES) { out[i + 1] = '...' break } } return '' } // Creates a new `ArrayBuffer` with the *copied* memory of the buffer instance. // Added in Node 0.12. function BufferToArrayBuffer () { return (new Buffer(this)).buffer } // HELPER FUNCTIONS // ================ function stringtrim (str) { if (str.trim) return str.trim() return str.replace(/^\s+|\s+$/g, '') } /** * Check to see if the browser supports augmenting a `Uint8Array` instance. * @return {boolean} */ function _browserSupport () { var arr = new xUint8Array(0) arr.foo = function () { return 42 } try { return (42 === arr.foo()) } catch (e) { return false } } /** * Class: ProxyBuffer * ================== * * Only used in Firefox, since Firefox does not allow augmenting "native" * objects (like Uint8Array instances) with new properties for some unknown * (probably silly) reason. So we'llĀ use an ES6 Proxy (supported since * Firefox 18) to wrap the Uint8Array instance without actually adding any * properties to it. * * Instances of this "fake" Buffer class are the "target" of the * ES6 Proxy (see `augment` function). * * We couldn't just use the `Uint8Array` as the target of the `Proxy` because * Proxies have an important limitation on trapping the `toString` method. * `Object.prototype.toString.call(proxy)` gets called whenever something is * implicitly cast to a String. Unfortunately, with a `Proxy` this * unconditionally returns `Object.prototype.toString.call(target)` which would * always return "[object Uint8Array]" if we used the `Uint8Array` instance as * the target. And, remember, in Firefox we cannot redefine the `Uint8Array` * instance's `toString` method. * * So, we use this `ProxyBuffer` class as the proxy's "target". Since this class * has its own custom `toString` method, it will get called whenever `toString` * gets called, implicitly or explicitly, on the `Proxy` instance. * * We also have to define the Uint8Array methods `subarray` and `set` on * `ProxyBuffer` because if we didn't then `proxy.subarray(0)` would have its * `this` set to `proxy` (a `Proxy` instance) which throws an exception in * Firefox which expects it to be a `TypedArray` instance. */ function ProxyBuffer (arr) { this._arr = arr if (arr.byteLength !== 0) this._dataview = new xDataView(arr.buffer, arr.byteOffset, arr.byteLength) } ProxyBuffer.prototype.write = BufferWrite ProxyBuffer.prototype.toString = BufferToString ProxyBuffer.prototype.toLocaleString = BufferToString ProxyBuffer.prototype.toJSON = BufferToJSON ProxyBuffer.prototype.copy = BufferCopy ProxyBuffer.prototype.slice = BufferSlice ProxyBuffer.prototype.readUInt8 = BufferReadUInt8 ProxyBuffer.prototype.readUInt16LE = BufferReadUInt16LE ProxyBuffer.prototype.readUInt16BE = BufferReadUInt16BE ProxyBuffer.prototype.readUInt32LE = BufferReadUInt32LE ProxyBuffer.prototype.readUInt32BE = BufferReadUInt32BE ProxyBuffer.prototype.readInt8 = BufferReadInt8 ProxyBuffer.prototype.readInt16LE = BufferReadInt16LE ProxyBuffer.prototype.readInt16BE = BufferReadInt16BE ProxyBuffer.prototype.readInt32LE = BufferReadInt32LE ProxyBuffer.prototype.readInt32BE = BufferReadInt32BE ProxyBuffer.prototype.readFloatLE = BufferReadFloatLE ProxyBuffer.prototype.readFloatBE = BufferReadFloatBE ProxyBuffer.prototype.readDoubleLE = BufferReadDoubleLE ProxyBuffer.prototype.readDoubleBE = BufferReadDoubleBE ProxyBuffer.prototype.writeUInt8 = BufferWriteUInt8 ProxyBuffer.prototype.writeUInt16LE = BufferWriteUInt16LE ProxyBuffer.prototype.writeUInt16BE = BufferWriteUInt16BE ProxyBuffer.prototype.writeUInt32LE = BufferWriteUInt32LE ProxyBuffer.prototype.writeUInt32BE = BufferWriteUInt32BE ProxyBuffer.prototype.writeInt8 = BufferWriteInt8 ProxyBuffer.prototype.writeInt16LE = BufferWriteInt16LE ProxyBuffer.prototype.writeInt16BE = BufferWriteInt16BE ProxyBuffer.prototype.writeInt32LE = BufferWriteInt32LE ProxyBuffer.prototype.writeInt32BE = BufferWriteInt32BE ProxyBuffer.prototype.writeFloatLE = BufferWriteFloatLE ProxyBuffer.prototype.writeFloatBE = BufferWriteFloatBE ProxyBuffer.prototype.writeDoubleLE = BufferWriteDoubleLE ProxyBuffer.prototype.writeDoubleBE = BufferWriteDoubleBE ProxyBuffer.prototype.fill = BufferFill ProxyBuffer.prototype.inspect = BufferInspect ProxyBuffer.prototype.toArrayBuffer = BufferToArrayBuffer ProxyBuffer.prototype._isBuffer = true ProxyBuffer.prototype.subarray = function () { return this._arr.subarray.apply(this._arr, arguments) } ProxyBuffer.prototype.set = function () { return this._arr.set.apply(this._arr, arguments) } var ProxyHandler = { get: function (target, name) { if (name in target) return target[name] else return target._arr[name] }, set: function (target, name, value) { target._arr[name] = value } } function augment (arr) { if (browserSupport === undefined) { browserSupport = _browserSupport() } if (browserSupport) { // Augment the Uint8Array *instance* (not the class!) with Buffer methods arr.write = BufferWrite arr.toString = BufferToString arr.toLocaleString = BufferToString arr.toJSON = BufferToJSON arr.copy = BufferCopy arr.slice = BufferSlice arr.readUInt8 = BufferReadUInt8 arr.readUInt16LE = BufferReadUInt16LE arr.readUInt16BE = BufferReadUInt16BE arr.readUInt32LE = BufferReadUInt32LE arr.readUInt32BE = BufferReadUInt32BE arr.readInt8 = BufferReadInt8 arr.readInt16LE = BufferReadInt16LE arr.readInt16BE = BufferReadInt16BE arr.readInt32LE = BufferReadInt32LE arr.readInt32BE = BufferReadInt32BE arr.readFloatLE = BufferReadFloatLE arr.readFloatBE = BufferReadFloatBE arr.readDoubleLE = BufferReadDoubleLE arr.readDoubleBE = BufferReadDoubleBE arr.writeUInt8 = BufferWriteUInt8 arr.writeUInt16LE = BufferWriteUInt16LE arr.writeUInt16BE = BufferWriteUInt16BE arr.writeUInt32LE = BufferWriteUInt32LE arr.writeUInt32BE = BufferWriteUInt32BE arr.writeInt8 = BufferWriteInt8 arr.writeInt16LE = BufferWriteInt16LE arr.writeInt16BE = BufferWriteInt16BE arr.writeInt32LE = BufferWriteInt32LE arr.writeInt32BE = BufferWriteInt32BE arr.writeFloatLE = BufferWriteFloatLE arr.writeFloatBE = BufferWriteFloatBE arr.writeDoubleLE = BufferWriteDoubleLE arr.writeDoubleBE = BufferWriteDoubleBE arr.fill = BufferFill arr.inspect = BufferInspect arr.toArrayBuffer = BufferToArrayBuffer arr._isBuffer = true if (arr.byteLength !== 0) arr._dataview = new xDataView(arr.buffer, arr.byteOffset, arr.byteLength) return arr } else { // This is a browser that doesn't support augmenting the `Uint8Array` // instance (*ahem* Firefox) so use an ES6 `Proxy`. var proxyBuffer = new ProxyBuffer(arr) var proxy = new Proxy(proxyBuffer, ProxyHandler) proxyBuffer._proxy = proxy return proxy } } // slice(start, end) function clamp (index, len, defaultValue) { if (typeof index !== 'number') return defaultValue index = ~~index; // Coerce to integer. if (index >= len) return len if (index >= 0) return index index += len if (index >= 0) return index return 0 } function coerce (length) { // Coerce length to a number (possibly NaN), round up // in case it's fractional (e.g. 123.456) then do a // double negate to coerce a NaN to 0. Easy, right? length = ~~Math.ceil(+length) return length < 0 ? 0 : length } function isArrayIsh (subject) { return Array.isArray(subject) || Buffer.isBuffer(subject) || subject && typeof subject === 'object' && typeof subject.length === 'number' } function toHex (n) { if (n < 16) return '0' + n.toString(16) return n.toString(16) } function utf8ToBytes (str) { var byteArray = [] for (var i = 0; i < str.length; i++) if (str.charCodeAt(i) <= 0x7F) byteArray.push(str.charCodeAt(i)) else { var h = encodeURIComponent(str.charAt(i)).substr(1).split('%') for (var j = 0; j < h.length; j++) byteArray.push(parseInt(h[j], 16)) } return byteArray } function asciiToBytes (str) { var byteArray = [] for (var i = 0; i < str.length; i++) { // Node's code seems to be doing this and not & 0x7F.. byteArray.push(str.charCodeAt(i) & 0xFF) } return byteArray } function base64ToBytes (str) { return require('base64-js').toByteArray(str) } function blitBuffer (src, dst, offset, length) { var pos, i = 0 while (i < length) { if ((i + offset >= dst.length) || (i >= src.length)) break dst[i + offset] = src[i] i++ } return i } function decodeUtf8Char (str) { try { return decodeURIComponent(str) } catch (err) { return String.fromCharCode(0xFFFD) // UTF 8 invalid char } } /* * We have to make sure that the value is a valid integer. This means that it * is non-negative. It has no fractional component and that it does not * exceed the maximum allowed value. * * value The number to check for validity * * max The maximum value */ function verifuint (value, max) { assert(typeof (value) == 'number', 'cannot write a non-number as a number') assert(value >= 0, 'specified a negative value for writing an unsigned value') assert(value <= max, 'value is larger than maximum value for type') assert(Math.floor(value) === value, 'value has a fractional component') } /* * A series of checks to make sure we actually have a signed 32-bit number */ function verifsint(value, max, min) { assert(typeof (value) == 'number', 'cannot write a non-number as a number') assert(value <= max, 'value larger than maximum allowed value') assert(value >= min, 'value smaller than minimum allowed value') assert(Math.floor(value) === value, 'value has a fractional component') } function verifIEEE754(value, max, min) { assert(typeof (value) == 'number', 'cannot write a non-number as a number') assert(value <= max, 'value larger than maximum allowed value') assert(value >= min, 'value smaller than minimum allowed value') } function assert (test, message) { if (!test) throw new Error(message || 'Failed assertion') } },{"base64-js":3,"typedarray":4}],"native-buffer-browserify":[function(require,module,exports){ module.exports=require('PcZj9L'); },{}],3:[function(require,module,exports){ (function (exports) { 'use strict'; var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; function b64ToByteArray(b64) { var i, j, l, tmp, placeHolders, arr; if (b64.length % 4 > 0) { throw 'Invalid string. Length must be a multiple of 4'; } // the number of equal signs (place holders) // if there are two placeholders, than the two characters before it // represent one byte // if there is only one, then the three characters before it represent 2 bytes // this is just a cheap hack to not do indexOf twice placeHolders = b64.indexOf('='); placeHolders = placeHolders > 0 ? b64.length - placeHolders : 0; // base64 is 4/3 + up to two characters of the original data arr = [];//new Uint8Array(b64.length * 3 / 4 - placeHolders); // if there are placeholders, only get up to the last complete 4 chars l = placeHolders > 0 ? b64.length - 4 : b64.length; for (i = 0, j = 0; i < l; i += 4, j += 3) { tmp = (lookup.indexOf(b64[i]) << 18) | (lookup.indexOf(b64[i + 1]) << 12) | (lookup.indexOf(b64[i + 2]) << 6) | lookup.indexOf(b64[i + 3]); arr.push((tmp & 0xFF0000) >> 16); arr.push((tmp & 0xFF00) >> 8); arr.push(tmp & 0xFF); } if (placeHolders === 2) { tmp = (lookup.indexOf(b64[i]) << 2) | (lookup.indexOf(b64[i + 1]) >> 4); arr.push(tmp & 0xFF); } else if (placeHolders === 1) { tmp = (lookup.indexOf(b64[i]) << 10) | (lookup.indexOf(b64[i + 1]) << 4) | (lookup.indexOf(b64[i + 2]) >> 2); arr.push((tmp >> 8) & 0xFF); arr.push(tmp & 0xFF); } return arr; } function uint8ToBase64(uint8) { var i, extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes output = "", temp, length; function tripletToBase64 (num) { return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]; }; // go through the array every three bytes, we'll deal with trailing stuff later for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) { temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2]); output += tripletToBase64(temp); } // pad the end with zeros, but make sure to not forget the extra bytes switch (extraBytes) { case 1: temp = uint8[uint8.length - 1]; output += lookup[temp >> 2]; output += lookup[(temp << 4) & 0x3F]; output += '=='; break; case 2: temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1]); output += lookup[temp >> 10]; output += lookup[(temp >> 4) & 0x3F]; output += lookup[(temp << 2) & 0x3F]; output += '='; break; } return output; } module.exports.toByteArray = b64ToByteArray; module.exports.fromByteArray = uint8ToBase64; }()); },{}],4:[function(require,module,exports){ var undefined = (void 0); // Paranoia // Beyond this value, index getters/setters (i.e. array[0], array[1]) are so slow to // create, and consume so much memory, that the browser appears frozen. var MAX_ARRAY_LENGTH = 1e5; // Approximations of internal ECMAScript conversion functions var ECMAScript = (function() { // Stash a copy in case other scripts modify these var opts = Object.prototype.toString, ophop = Object.prototype.hasOwnProperty; return { // Class returns internal [[Class]] property, used to avoid cross-frame instanceof issues: Class: function(v) { return opts.call(v).replace(/^\[object *|\]$/g, ''); }, HasProperty: function(o, p) { return p in o; }, HasOwnProperty: function(o, p) { return ophop.call(o, p); }, IsCallable: function(o) { return typeof o === 'function'; }, ToInt32: function(v) { return v >> 0; }, ToUint32: function(v) { return v >>> 0; } }; }()); // Snapshot intrinsics var LN2 = Math.LN2, abs = Math.abs, floor = Math.floor, log = Math.log, min = Math.min, pow = Math.pow, round = Math.round; // ES5: lock down object properties function configureProperties(obj) { if (getOwnPropertyNames && defineProperty) { var props = getOwnPropertyNames(obj), i; for (i = 0; i < props.length; i += 1) { defineProperty(obj, props[i], { value: obj[props[i]], writable: false, enumerable: false, configurable: false }); } } } // emulate ES5 getter/setter API using legacy APIs // http://blogs.msdn.com/b/ie/archive/2010/09/07/transitioning-existing-code-to-the-es5-getter-setter-apis.aspx // (second clause tests for Object.defineProperty() in IE<9 that only supports extending DOM prototypes, but // note that IE<9 does not support __defineGetter__ or __defineSetter__ so it just renders the method harmless) var defineProperty = Object.defineProperty || function(o, p, desc) { if (!o === Object(o)) throw new TypeError("Object.defineProperty called on non-object"); if (ECMAScript.HasProperty(desc, 'get') && Object.prototype.__defineGetter__) { Object.prototype.__defineGetter__.call(o, p, desc.get); } if (ECMAScript.HasProperty(desc, 'set') && Object.prototype.__defineSetter__) { Object.prototype.__defineSetter__.call(o, p, desc.set); } if (ECMAScript.HasProperty(desc, 'value')) { o[p] = desc.value; } return o; }; var getOwnPropertyNames = Object.getOwnPropertyNames || function getOwnPropertyNames(o) { if (o !== Object(o)) throw new TypeError("Object.getOwnPropertyNames called on non-object"); var props = [], p; for (p in o) { if (ECMAScript.HasOwnProperty(o, p)) { props.push(p); } } return props; }; // ES5: Make obj[index] an alias for obj._getter(index)/obj._setter(index, value) // for index in 0 ... obj.length function makeArrayAccessors(obj) { if (!defineProperty) { return; } if (obj.length > MAX_ARRAY_LENGTH) throw new RangeError("Array too large for polyfill"); function makeArrayAccessor(index) { defineProperty(obj, index, { 'get': function() { return obj._getter(index); }, 'set': function(v) { obj._setter(index, v); }, enumerable: true, configurable: false }); } var i; for (i = 0; i < obj.length; i += 1) { makeArrayAccessor(i); } } // Internal conversion functions: // pack() - take a number (interpreted as Type), output a byte array // unpack() - take a byte array, output a Type-like number function as_signed(value, bits) { var s = 32 - bits; return (value << s) >> s; } function as_unsigned(value, bits) { var s = 32 - bits; return (value << s) >>> s; } function packI8(n) { return [n & 0xff]; } function unpackI8(bytes) { return as_signed(bytes[0], 8); } function packU8(n) { return [n & 0xff]; } function unpackU8(bytes) { return as_unsigned(bytes[0], 8); } function packU8Clamped(n) { n = round(Number(n)); return [n < 0 ? 0 : n > 0xff ? 0xff : n & 0xff]; } function packI16(n) { return [(n >> 8) & 0xff, n & 0xff]; } function unpackI16(bytes) { return as_signed(bytes[0] << 8 | bytes[1], 16); } function packU16(n) { return [(n >> 8) & 0xff, n & 0xff]; } function unpackU16(bytes) { return as_unsigned(bytes[0] << 8 | bytes[1], 16); } function packI32(n) { return [(n >> 24) & 0xff, (n >> 16) & 0xff, (n >> 8) & 0xff, n & 0xff]; } function unpackI32(bytes) { return as_signed(bytes[0] << 24 | bytes[1] << 16 | bytes[2] << 8 | bytes[3], 32); } function packU32(n) { return [(n >> 24) & 0xff, (n >> 16) & 0xff, (n >> 8) & 0xff, n & 0xff]; } function unpackU32(bytes) { return as_unsigned(bytes[0] << 24 | bytes[1] << 16 | bytes[2] << 8 | bytes[3], 32); } function packIEEE754(v, ebits, fbits) { var bias = (1 << (ebits - 1)) - 1, s, e, f, ln, i, bits, str, bytes; function roundToEven(n) { var w = floor(n), f = n - w; if (f < 0.5) return w; if (f > 0.5) return w + 1; return w % 2 ? w + 1 : w; } // Compute sign, exponent, fraction if (v !== v) { // NaN // http://dev.w3.org/2006/webapi/WebIDL/#es-type-mapping e = (1 << ebits) - 1; f = pow(2, fbits - 1); s = 0; } else if (v === Infinity || v === -Infinity) { e = (1 << ebits) - 1; f = 0; s = (v < 0) ? 1 : 0; } else if (v === 0) { e = 0; f = 0; s = (1 / v === -Infinity) ? 1 : 0; } else { s = v < 0; v = abs(v); if (v >= pow(2, 1 - bias)) { e = min(floor(log(v) / LN2), 1023); f = roundToEven(v / pow(2, e) * pow(2, fbits)); if (f / pow(2, fbits) >= 2) { e = e + 1; f = 1; } if (e > bias) { // Overflow e = (1 << ebits) - 1; f = 0; } else { // Normalized e = e + bias; f = f - pow(2, fbits); } } else { // Denormalized e = 0; f = roundToEven(v / pow(2, 1 - bias - fbits)); } } // Pack sign, exponent, fraction bits = []; for (i = fbits; i; i -= 1) { bits.push(f % 2 ? 1 : 0); f = floor(f / 2); } for (i = ebits; i; i -= 1) { bits.push(e % 2 ? 1 : 0); e = floor(e / 2); } bits.push(s ? 1 : 0); bits.reverse(); str = bits.join(''); // Bits to bytes bytes = []; while (str.length) { bytes.push(parseInt(str.substring(0, 8), 2)); str = str.substring(8); } return bytes; } function unpackIEEE754(bytes, ebits, fbits) { // Bytes to bits var bits = [], i, j, b, str, bias, s, e, f; for (i = bytes.length; i; i -= 1) { b = bytes[i - 1]; for (j = 8; j; j -= 1) { bits.push(b % 2 ? 1 : 0); b = b >> 1; } } bits.reverse(); str = bits.join(''); // Unpack sign, exponent, fraction bias = (1 << (ebits - 1)) - 1; s = parseInt(str.substring(0, 1), 2) ? -1 : 1; e = parseInt(str.substring(1, 1 + ebits), 2); f = parseInt(str.substring(1 + ebits), 2); // Produce number if (e === (1 << ebits) - 1) { return f !== 0 ? NaN : s * Infinity; } else if (e > 0) { // Normalized return s * pow(2, e - bias) * (1 + f / pow(2, fbits)); } else if (f !== 0) { // Denormalized return s * pow(2, -(bias - 1)) * (f / pow(2, fbits)); } else { return s < 0 ? -0 : 0; } } function unpackF64(b) { return unpackIEEE754(b, 11, 52); } function packF64(v) { return packIEEE754(v, 11, 52); } function unpackF32(b) { return unpackIEEE754(b, 8, 23); } function packF32(v) { return packIEEE754(v, 8, 23); } // // 3 The ArrayBuffer Type // (function() { /** @constructor */ var ArrayBuffer = function ArrayBuffer(length) { length = ECMAScript.ToInt32(length); if (length < 0) throw new RangeError('ArrayBuffer size is not a small enough positive integer'); this.byteLength = length; this._bytes = []; this._bytes.length = length; var i; for (i = 0; i < this.byteLength; i += 1) { this._bytes[i] = 0; } configureProperties(this); }; exports.ArrayBuffer = exports.ArrayBuffer || ArrayBuffer; // // 4 The ArrayBufferView Type // // NOTE: this constructor is not exported /** @constructor */ var ArrayBufferView = function ArrayBufferView() { //this.buffer = null; //this.byteOffset = 0; //this.byteLength = 0; }; // // 5 The Typed Array View Types // function makeConstructor(bytesPerElement, pack, unpack) { // Each TypedArray type requires a distinct constructor instance with // identical logic, which this produces. var ctor; ctor = function(buffer, byteOffset, length) { var array, sequence, i, s; if (!arguments.length || typeof arguments[0] === 'number') { // Constructor(unsigned long length) this.length = ECMAScript.ToInt32(arguments[0]); if (length < 0) throw new RangeError('ArrayBufferView size is not a small enough positive integer'); this.byteLength = this.length * this.BYTES_PER_ELEMENT; this.buffer = new ArrayBuffer(this.byteLength); this.byteOffset = 0; } else if (typeof arguments[0] === 'object' && arguments[0].constructor === ctor) { // Constructor(TypedArray array) array = arguments[0]; this.length = array.length; this.byteLength = this.length * this.BYTES_PER_ELEMENT; this.buffer = new ArrayBuffer(this.byteLength); this.byteOffset = 0; for (i = 0; i < this.length; i += 1) { this._setter(i, array._getter(i)); } } else if (typeof arguments[0] === 'object' && !(arguments[0] instanceof ArrayBuffer || ECMAScript.Class(arguments[0]) === 'ArrayBuffer')) { // Constructor(sequence array) sequence = arguments[0]; this.length = ECMAScript.ToUint32(sequence.length); this.byteLength = this.length * this.BYTES_PER_ELEMENT; this.buffer = new ArrayBuffer(this.byteLength); this.byteOffset = 0; for (i = 0; i < this.length; i += 1) { s = sequence[i]; this._setter(i, Number(s)); } } else if (typeof arguments[0] === 'object' && (arguments[0] instanceof ArrayBuffer || ECMAScript.Class(arguments[0]) === 'ArrayBuffer')) { // Constructor(ArrayBuffer buffer, // optional unsigned long byteOffset, optional unsigned long length) this.buffer = buffer; this.byteOffset = ECMAScript.ToUint32(byteOffset); if (this.byteOffset > this.buffer.byteLength) { throw new RangeError("byteOffset out of range"); } if (this.byteOffset % this.BYTES_PER_ELEMENT) { // The given byteOffset must be a multiple of the element // size of the specific type, otherwise an exception is raised. throw new RangeError("ArrayBuffer length minus the byteOffset is not a multiple of the element size."); } if (arguments.length < 3) { this.byteLength = this.buffer.byteLength - this.byteOffset; if (this.byteLength % this.BYTES_PER_ELEMENT) { throw new RangeError("length of buffer minus byteOffset not a multiple of the element size"); } this.length = this.byteLength / this.BYTES_PER_ELEMENT; } else { this.length = ECMAScript.ToUint32(length); this.byteLength = this.length * this.BYTES_PER_ELEMENT; } if ((this.byteOffset + this.byteLength) > this.buffer.byteLength) { throw new RangeError("byteOffset and length reference an area beyond the end of the buffer"); } } else { throw new TypeError("Unexpected argument type(s)"); } this.constructor = ctor; configureProperties(this); makeArrayAccessors(this); }; ctor.prototype = new ArrayBufferView(); ctor.prototype.BYTES_PER_ELEMENT = bytesPerElement; ctor.prototype._pack = pack; ctor.prototype._unpack = unpack; ctor.BYTES_PER_ELEMENT = bytesPerElement; // getter type (unsigned long index); ctor.prototype._getter = function(index) { if (arguments.length < 1) throw new SyntaxError("Not enough arguments"); index = ECMAScript.ToUint32(index); if (index >= this.length) { return undefined; } var bytes = [], i, o; for (i = 0, o = this.byteOffset + index * this.BYTES_PER_ELEMENT; i < this.BYTES_PER_ELEMENT; i += 1, o += 1) { bytes.push(this.buffer._bytes[o]); } return this._unpack(bytes); }; // NONSTANDARD: convenience alias for getter: type get(unsigned long index); ctor.prototype.get = ctor.prototype._getter; // setter void (unsigned long index, type value); ctor.prototype._setter = function(index, value) { if (arguments.length < 2) throw new SyntaxError("Not enough arguments"); index = ECMAScript.ToUint32(index); if (index >= this.length) { return undefined; } var bytes = this._pack(value), i, o; for (i = 0, o = this.byteOffset + index * this.BYTES_PER_ELEMENT; i < this.BYTES_PER_ELEMENT; i += 1, o += 1) { this.buffer._bytes[o] = bytes[i]; } }; // void set(TypedArray array, optional unsigned long offset); // void set(sequence array, optional unsigned long offset); ctor.prototype.set = function(index, value) { if (arguments.length < 1) throw new SyntaxError("Not enough arguments"); var array, sequence, offset, len, i, s, d, byteOffset, byteLength, tmp; if (typeof arguments[0] === 'object' && arguments[0].constructor === this.constructor) { // void set(TypedArray array, optional unsigned long offset); array = arguments[0]; offset = ECMAScript.ToUint32(arguments[1]); if (offset + array.length > this.length) { throw new RangeError("Offset plus length of array is out of range"); } byteOffset = this.byteOffset + offset * this.BYTES_PER_ELEMENT; byteLength = array.length * this.BYTES_PER_ELEMENT; if (array.buffer === this.buffer) { tmp = []; for (i = 0, s = array.byteOffset; i < byteLength; i += 1, s += 1) { tmp[i] = array.buffer._bytes[s]; } for (i = 0, d = byteOffset; i < byteLength; i += 1, d += 1) { this.buffer._bytes[d] = tmp[i]; } } else { for (i = 0, s = array.byteOffset, d = byteOffset; i < byteLength; i += 1, s += 1, d += 1) { this.buffer._bytes[d] = array.buffer._bytes[s]; } } } else if (typeof arguments[0] === 'object' && typeof arguments[0].length !== 'undefined') { // void set(sequence array, optional unsigned long offset); sequence = arguments[0]; len = ECMAScript.ToUint32(sequence.length); offset = ECMAScript.ToUint32(arguments[1]); if (offset + len > this.length) { throw new RangeError("Offset plus length of array is out of range"); } for (i = 0; i < len; i += 1) { s = sequence[i]; this._setter(offset + i, Number(s)); } } else { throw new TypeError("Unexpected argument type(s)"); } }; // TypedArray subarray(long begin, optional long end); ctor.prototype.subarray = function(start, end) { function clamp(v, min, max) { return v < min ? min : v > max ? max : v; } start = ECMAScript.ToInt32(start); end = ECMAScript.ToInt32(end); if (arguments.length < 1) { start = 0; } if (arguments.length < 2) { end = this.length; } if (start < 0) { start = this.length + start; } if (end < 0) { end = this.length + end; } start = clamp(start, 0, this.length); end = clamp(end, 0, this.length); var len = end - start; if (len < 0) { len = 0; } return new this.constructor( this.buffer, this.byteOffset + start * this.BYTES_PER_ELEMENT, len); }; return ctor; } var Int8Array = makeConstructor(1, packI8, unpackI8); var Uint8Array = makeConstructor(1, packU8, unpackU8); var Uint8ClampedArray = makeConstructor(1, packU8Clamped, unpackU8); var Int16Array = makeConstructor(2, packI16, unpackI16); var Uint16Array = makeConstructor(2, packU16, unpackU16); var Int32Array = makeConstructor(4, packI32, unpackI32); var Uint32Array = makeConstructor(4, packU32, unpackU32); var Float32Array = makeConstructor(4, packF32, unpackF32); var Float64Array = makeConstructor(8, packF64, unpackF64); exports.Int8Array = exports.Int8Array || Int8Array; exports.Uint8Array = exports.Uint8Array || Uint8Array; exports.Uint8ClampedArray = exports.Uint8ClampedArray || Uint8ClampedArray; exports.Int16Array = exports.Int16Array || Int16Array; exports.Uint16Array = exports.Uint16Array || Uint16Array; exports.Int32Array = exports.Int32Array || Int32Array; exports.Uint32Array = exports.Uint32Array || Uint32Array; exports.Float32Array = exports.Float32Array || Float32Array; exports.Float64Array = exports.Float64Array || Float64Array; }()); // // 6 The DataView View Type // (function() { function r(array, index) { return ECMAScript.IsCallable(array.get) ? array.get(index) : array[index]; } var IS_BIG_ENDIAN = (function() { var u16array = new(exports.Uint16Array)([0x1234]), u8array = new(exports.Uint8Array)(u16array.buffer); return r(u8array, 0) === 0x12; }()); // Constructor(ArrayBuffer buffer, // optional unsigned long byteOffset, // optional unsigned long byteLength) /** @constructor */ var DataView = function DataView(buffer, byteOffset, byteLength) { if (arguments.length === 0) { buffer = new ArrayBuffer(0); } else if (!(buffer instanceof ArrayBuffer || ECMAScript.Class(buffer) === 'ArrayBuffer')) { throw new TypeError("TypeError"); } this.buffer = buffer || new ArrayBuffer(0); this.byteOffset = ECMAScript.ToUint32(byteOffset); if (this.byteOffset > this.buffer.byteLength) { throw new RangeError("byteOffset out of range"); } if (arguments.length < 3) { this.byteLength = this.buffer.byteLength - this.byteOffset; } else { this.byteLength = ECMAScript.ToUint32(byteLength); } if ((this.byteOffset + this.byteLength) > this.buffer.byteLength) { throw new RangeError("byteOffset and length reference an area beyond the end of the buffer"); } configureProperties(this); }; function makeGetter(arrayType) { return function(byteOffset, littleEndian) { byteOffset = ECMAScript.ToUint32(byteOffset); if (byteOffset + arrayType.BYTES_PER_ELEMENT > this.byteLength) { throw new RangeError("Array index out of range"); } byteOffset += this.byteOffset; var uint8Array = new Uint8Array(this.buffer, byteOffset, arrayType.BYTES_PER_ELEMENT), bytes = [], i; for (i = 0; i < arrayType.BYTES_PER_ELEMENT; i += 1) { bytes.push(r(uint8Array, i)); } if (Boolean(littleEndian) === Boolean(IS_BIG_ENDIAN)) { bytes.reverse(); } return r(new arrayType(new Uint8Array(bytes).buffer), 0); }; } DataView.prototype.getUint8 = makeGetter(exports.Uint8Array); DataView.prototype.getInt8 = makeGetter(exports.Int8Array); DataView.prototype.getUint16 = makeGetter(exports.Uint16Array); DataView.prototype.getInt16 = makeGetter(exports.Int16Array); DataView.prototype.getUint32 = makeGetter(exports.Uint32Array); DataView.prototype.getInt32 = makeGetter(exports.Int32Array); DataView.prototype.getFloat32 = makeGetter(exports.Float32Array); DataView.prototype.getFloat64 = makeGetter(exports.Float64Array); function makeSetter(arrayType) { return function(byteOffset, value, littleEndian) { byteOffset = ECMAScript.ToUint32(byteOffset); if (byteOffset + arrayType.BYTES_PER_ELEMENT > this.byteLength) { throw new RangeError("Array index out of range"); } // Get bytes var typeArray = new arrayType([value]), byteArray = new Uint8Array(typeArray.buffer), bytes = [], i, byteView; for (i = 0; i < arrayType.BYTES_PER_ELEMENT; i += 1) { bytes.push(r(byteArray, i)); } // Flip if necessary if (Boolean(littleEndian) === Boolean(IS_BIG_ENDIAN)) { bytes.reverse(); } // Write them byteView = new Uint8Array(this.buffer, byteOffset, arrayType.BYTES_PER_ELEMENT); byteView.set(bytes); }; } DataView.prototype.setUint8 = makeSetter(exports.Uint8Array); DataView.prototype.setInt8 = makeSetter(exports.Int8Array); DataView.prototype.setUint16 = makeSetter(exports.Uint16Array); DataView.prototype.setInt16 = makeSetter(exports.Int16Array); DataView.prototype.setUint32 = makeSetter(exports.Uint32Array); DataView.prototype.setInt32 = makeSetter(exports.Int32Array); DataView.prototype.setFloat32 = makeSetter(exports.Float32Array); DataView.prototype.setFloat64 = makeSetter(exports.Float64Array); exports.DataView = exports.DataView || DataView; }()); },{}]},{},[]) ;;module.exports=require("native-buffer-browserify").Buffer },{}],2:[function(require,module,exports){ // shim for using process in browser var process = module.exports = {}; process.nextTick = (function () { var canSetImmediate = typeof window !== 'undefined' && window.setImmediate; var canPost = typeof window !== 'undefined' && window.postMessage && window.addEventListener ; if (canSetImmediate) { return function (f) { return window.setImmediate(f) }; } if (canPost) { var queue = []; window.addEventListener('message', function (ev) { if (ev.source === window && ev.data === 'process-tick') { ev.stopPropagation(); if (queue.length > 0) { var fn = queue.shift(); fn(); } } }, true); return function nextTick(fn) { queue.push(fn); window.postMessage('process-tick', '*'); }; } return function nextTick(fn) { setTimeout(fn, 0); }; })(); process.title = 'browser'; process.browser = true; process.env = {}; process.argv = []; process.binding = function (name) { throw new Error('process.binding is not supported'); } // TODO(shtylman) process.cwd = function () { return '/' }; process.chdir = function (dir) { throw new Error('process.chdir is not supported'); }; },{}],3:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/..\\node_modules\\poly-decomp\\src\\Line.js",__dirname="/..\\node_modules\\poly-decomp\\src";var Scalar = require('./Scalar'); module.exports = Line; /** * Container for line-related functions * @class Line */ function Line(){}; /** * Compute the intersection between two lines. * @static * @method lineInt * @param {Array} l1 Line vector 1 * @param {Array} l2 Line vector 2 * @param {Number} precision Precision to use when checking if the lines are parallel * @return {Array} The intersection point. */ Line.lineInt = function(l1,l2,precision){ precision = precision || 0; var i = [0,0]; // point var a1, b1, c1, a2, b2, c2, det; // scalars a1 = l1[1][1] - l1[0][1]; b1 = l1[0][0] - l1[1][0]; c1 = a1 * l1[0][0] + b1 * l1[0][1]; a2 = l2[1][1] - l2[0][1]; b2 = l2[0][0] - l2[1][0]; c2 = a2 * l2[0][0] + b2 * l2[0][1]; det = a1 * b2 - a2*b1; if (!Scalar.eq(det, 0, precision)) { // lines are not parallel i[0] = (b2 * c1 - b1 * c2) / det; i[1] = (a1 * c2 - a2 * c1) / det; } return i; }; /** * Checks if two line segments intersects. * @method segmentsIntersect * @param {Array} p1 The start vertex of the first line segment. * @param {Array} p2 The end vertex of the first line segment. * @param {Array} q1 The start vertex of the second line segment. * @param {Array} q2 The end vertex of the second line segment. * @return {Boolean} True if the two line segments intersect */ Line.segmentsIntersect = function(p1, p2, q1, q2){ var dx = p2[0] - p1[0]; var dy = p2[1] - p1[1]; var da = q2[0] - q1[0]; var db = q2[1] - q1[1]; // segments are parallel if(da*dy - db*dx == 0) return false; var s = (dx * (q1[1] - p1[1]) + dy * (p1[0] - q1[0])) / (da * dy - db * dx) var t = (da * (p1[1] - q1[1]) + db * (q1[0] - p1[0])) / (db * dx - da * dy) return (s>=0 && s<=1 && t>=0 && t<=1); }; },{"./Scalar":6,"__browserify_Buffer":1,"__browserify_process":2}],4:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/..\\node_modules\\poly-decomp\\src\\Point.js",__dirname="/..\\node_modules\\poly-decomp\\src";module.exports = Point; /** * Point related functions * @class Point */ function Point(){}; /** * Get the area of a triangle spanned by the three given points. Note that the area will be negative if the points are not given in counter-clockwise order. * @static * @method area * @param {Array} a * @param {Array} b * @param {Array} c * @return {Number} */ Point.area = function(a,b,c){ return (((b[0] - a[0])*(c[1] - a[1]))-((c[0] - a[0])*(b[1] - a[1]))); }; Point.left = function(a,b,c){ return Point.area(a,b,c) > 0; }; Point.leftOn = function(a,b,c) { return Point.area(a, b, c) >= 0; }; Point.right = function(a,b,c) { return Point.area(a, b, c) < 0; }; Point.rightOn = function(a,b,c) { return Point.area(a, b, c) <= 0; }; var tmpPoint1 = [], tmpPoint2 = []; /** * Check if three points are collinear * @method collinear * @param {Array} a * @param {Array} b * @param {Array} c * @param {Number} [thresholdAngle=0] Threshold angle to use when comparing the vectors. The function will return true if the angle between the resulting vectors is less than this value. Use zero for max precision. * @return {Boolean} */ Point.collinear = function(a,b,c,thresholdAngle) { if(!thresholdAngle) return Point.area(a, b, c) == 0; else { var ab = tmpPoint1, bc = tmpPoint2; ab[0] = b[0]-a[0]; ab[1] = b[1]-a[1]; bc[0] = c[0]-b[0]; bc[1] = c[1]-b[1]; var dot = ab[0]*bc[0] + ab[1]*bc[1], magA = Math.sqrt(ab[0]*ab[0] + ab[1]*ab[1]), magB = Math.sqrt(bc[0]*bc[0] + bc[1]*bc[1]), angle = Math.acos(dot/(magA*magB)); return angle < thresholdAngle; } }; Point.sqdist = function(a,b){ var dx = b[0] - a[0]; var dy = b[1] - a[1]; return dx * dx + dy * dy; }; },{"__browserify_Buffer":1,"__browserify_process":2}],5:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/..\\node_modules\\poly-decomp\\src\\Polygon.js",__dirname="/..\\node_modules\\poly-decomp\\src";var Line = require("./Line") , Point = require("./Point") , Scalar = require("./Scalar") module.exports = Polygon; /** * Polygon class. * @class Polygon * @constructor */ function Polygon(){ /** * Vertices that this polygon consists of. An array of array of numbers, example: [[0,0],[1,0],..] * @property vertices * @type {Array} */ this.vertices = []; } /** * Get a vertex at position i. It does not matter if i is out of bounds, this function will just cycle. * @method at * @param {Number} i * @return {Array} */ Polygon.prototype.at = function(i){ var v = this.vertices, s = v.length; return v[i < 0 ? i % s + s : i % s]; }; /** * Get first vertex * @method first * @return {Array} */ Polygon.prototype.first = function(){ return this.vertices[0]; }; /** * Get last vertex * @method last * @return {Array} */ Polygon.prototype.last = function(){ return this.vertices[this.vertices.length-1]; }; /** * Clear the polygon data * @method clear * @return {Array} */ Polygon.prototype.clear = function(){ this.vertices.length = 0; }; /** * Append points "from" to "to"-1 from an other polygon "poly" onto this one. * @method append * @param {Polygon} poly The polygon to get points from. * @param {Number} from The vertex index in "poly". * @param {Number} to The end vertex index in "poly". Note that this vertex is NOT included when appending. * @return {Array} */ Polygon.prototype.append = function(poly,from,to){ if(typeof(from) == "undefined") throw new Error("From is not given!"); if(typeof(to) == "undefined") throw new Error("To is not given!"); if(to-1 < from) throw new Error("lol1"); if(to > poly.vertices.length) throw new Error("lol2"); if(from < 0) throw new Error("lol3"); for(var i=from; i v[br][0])) { br = i; } } // reverse poly if clockwise if (!Point.left(this.at(br - 1), this.at(br), this.at(br + 1))) { this.reverse(); } }; /** * Reverse the vertices in the polygon * @method reverse */ Polygon.prototype.reverse = function(){ var tmp = []; for(var i=0, N=this.vertices.length; i!==N; i++){ tmp.push(this.vertices.pop()); } this.vertices = tmp; }; /** * Check if a point in the polygon is a reflex point * @method isReflex * @param {Number} i * @return {Boolean} */ Polygon.prototype.isReflex = function(i){ return Point.right(this.at(i - 1), this.at(i), this.at(i + 1)); }; var tmpLine1=[], tmpLine2=[]; /** * Check if two vertices in the polygon can see each other * @method canSee * @param {Number} a Vertex index 1 * @param {Number} b Vertex index 2 * @return {Boolean} */ Polygon.prototype.canSee = function(a,b) { var p, dist, l1=tmpLine1, l2=tmpLine2; if (Point.leftOn(this.at(a + 1), this.at(a), this.at(b)) && Point.rightOn(this.at(a - 1), this.at(a), this.at(b))) { return false; } dist = Point.sqdist(this.at(a), this.at(b)); for (var i = 0; i !== this.vertices.length; ++i) { // for each edge if ((i + 1) % this.vertices.length === a || i === a) // ignore incident edges continue; if (Point.leftOn(this.at(a), this.at(b), this.at(i + 1)) && Point.rightOn(this.at(a), this.at(b), this.at(i))) { // if diag intersects an edge l1[0] = this.at(a); l1[1] = this.at(b); l2[0] = this.at(i); l2[1] = this.at(i + 1); p = Line.lineInt(l1,l2); if (Point.sqdist(this.at(a), p) < dist) { // if edge is blocking visibility to b return false; } } } return true; }; /** * Copy the polygon from vertex i to vertex j. * @method copy * @param {Number} i * @param {Number} j * @param {Polygon} [targetPoly] Optional target polygon to save in. * @return {Polygon} The resulting copy. */ Polygon.prototype.copy = function(i,j,targetPoly){ var p = targetPoly || new Polygon(); p.clear(); if (i < j) { // Insert all vertices from i to j for(var k=i; k<=j; k++) p.vertices.push(this.vertices[k]); } else { // Insert vertices 0 to j for(var k=0; k<=j; k++) p.vertices.push(this.vertices[k]); // Insert vertices i to end for(var k=i; k 0) return this.slice(edges); else return [this]; }; /** * Slices the polygon given one or more cut edges. If given one, this function will return two polygons (false on failure). If many, an array of polygons. * @method slice * @param {Array} cutEdges A list of edges, as returned by .getCutEdges() * @return {Array} */ Polygon.prototype.slice = function(cutEdges){ if(cutEdges.length == 0) return [this]; if(cutEdges instanceof Array && cutEdges.length && cutEdges[0] instanceof Array && cutEdges[0].length==2 && cutEdges[0][0] instanceof Array){ var polys = [this]; for(var i=0; i maxlevel){ console.warn("quickDecomp: max level ("+maxlevel+") reached."); return result; } for (var i = 0; i < this.vertices.length; ++i) { if (poly.isReflex(i)) { reflexVertices.push(poly.vertices[i]); upperDist = lowerDist = Number.MAX_VALUE; for (var j = 0; j < this.vertices.length; ++j) { if (Point.left(poly.at(i - 1), poly.at(i), poly.at(j)) && Point.rightOn(poly.at(i - 1), poly.at(i), poly.at(j - 1))) { // if line intersects with an edge p = getIntersectionPoint(poly.at(i - 1), poly.at(i), poly.at(j), poly.at(j - 1)); // find the point of intersection if (Point.right(poly.at(i + 1), poly.at(i), p)) { // make sure it's inside the poly d = Point.sqdist(poly.vertices[i], p); if (d < lowerDist) { // keep only the closest intersection lowerDist = d; lowerInt = p; lowerIndex = j; } } } if (Point.left(poly.at(i + 1), poly.at(i), poly.at(j + 1)) && Point.rightOn(poly.at(i + 1), poly.at(i), poly.at(j))) { p = getIntersectionPoint(poly.at(i + 1), poly.at(i), poly.at(j), poly.at(j + 1)); if (Point.left(poly.at(i - 1), poly.at(i), p)) { d = Point.sqdist(poly.vertices[i], p); if (d < upperDist) { upperDist = d; upperInt = p; upperIndex = j; } } } } // if there are no vertices to connect to, choose a point in the middle if (lowerIndex == (upperIndex + 1) % this.vertices.length) { //console.log("Case 1: Vertex("+i+"), lowerIndex("+lowerIndex+"), upperIndex("+upperIndex+"), poly.size("+this.vertices.length+")"); p[0] = (lowerInt[0] + upperInt[0]) / 2; p[1] = (lowerInt[1] + upperInt[1]) / 2; steinerPoints.push(p); if (i < upperIndex) { //lowerPoly.insert(lowerPoly.end(), poly.begin() + i, poly.begin() + upperIndex + 1); lowerPoly.append(poly, i, upperIndex+1); lowerPoly.vertices.push(p); upperPoly.vertices.push(p); if (lowerIndex != 0){ //upperPoly.insert(upperPoly.end(), poly.begin() + lowerIndex, poly.end()); upperPoly.append(poly,lowerIndex,poly.vertices.length); } //upperPoly.insert(upperPoly.end(), poly.begin(), poly.begin() + i + 1); upperPoly.append(poly,0,i+1); } else { if (i != 0){ //lowerPoly.insert(lowerPoly.end(), poly.begin() + i, poly.end()); lowerPoly.append(poly,i,poly.vertices.length); } //lowerPoly.insert(lowerPoly.end(), poly.begin(), poly.begin() + upperIndex + 1); lowerPoly.append(poly,0,upperIndex+1); lowerPoly.vertices.push(p); upperPoly.vertices.push(p); //upperPoly.insert(upperPoly.end(), poly.begin() + lowerIndex, poly.begin() + i + 1); upperPoly.append(poly,lowerIndex,i+1); } } else { // connect to the closest point within the triangle //console.log("Case 2: Vertex("+i+"), closestIndex("+closestIndex+"), poly.size("+this.vertices.length+")\n"); if (lowerIndex > upperIndex) { upperIndex += this.vertices.length; } closestDist = Number.MAX_VALUE; if(upperIndex < lowerIndex){ return result; } for (var j = lowerIndex; j <= upperIndex; ++j) { if (Point.leftOn(poly.at(i - 1), poly.at(i), poly.at(j)) && Point.rightOn(poly.at(i + 1), poly.at(i), poly.at(j))) { d = Point.sqdist(poly.at(i), poly.at(j)); if (d < closestDist) { closestDist = d; closestIndex = j % this.vertices.length; } } } if (i < closestIndex) { lowerPoly.append(poly,i,closestIndex+1); if (closestIndex != 0){ upperPoly.append(poly,closestIndex,v.length); } upperPoly.append(poly,0,i+1); } else { if (i != 0){ lowerPoly.append(poly,i,v.length); } lowerPoly.append(poly,0,closestIndex+1); upperPoly.append(poly,closestIndex,i+1); } } // solve smallest poly first if (lowerPoly.vertices.length < upperPoly.vertices.length) { lowerPoly.quickDecomp(result,reflexVertices,steinerPoints,delta,maxlevel,level); upperPoly.quickDecomp(result,reflexVertices,steinerPoints,delta,maxlevel,level); } else { upperPoly.quickDecomp(result,reflexVertices,steinerPoints,delta,maxlevel,level); lowerPoly.quickDecomp(result,reflexVertices,steinerPoints,delta,maxlevel,level); } return result; } } result.push(this); return result; }; /** * Remove collinear points in the polygon. * @method removeCollinearPoints * @param {Number} [precision] The threshold angle to use when determining whether two edges are collinear. Use zero for finest precision. * @return {Number} The number of points removed */ Polygon.prototype.removeCollinearPoints = function(precision){ var num = 0; for(var i=this.vertices.length-1; this.vertices.length>3 && i>=0; --i){ if(Point.collinear(this.at(i-1),this.at(i),this.at(i+1),precision)){ // Remove the middle point this.vertices.splice(i%this.vertices.length,1); i--; // Jump one point forward. Otherwise we may get a chain removal num++; } } return num; }; },{"./Line":3,"./Point":4,"./Scalar":6,"__browserify_Buffer":1,"__browserify_process":2}],6:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/..\\node_modules\\poly-decomp\\src\\Scalar.js",__dirname="/..\\node_modules\\poly-decomp\\src";module.exports = Scalar; /** * Scalar functions * @class Scalar */ function Scalar(){} /** * Check if two scalars are equal * @static * @method eq * @param {Number} a * @param {Number} b * @param {Number} [precision] * @return {Boolean} */ Scalar.eq = function(a,b,precision){ precision = precision || 0; return Math.abs(a-b) < precision; }; },{"__browserify_Buffer":1,"__browserify_process":2}],7:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/..\\node_modules\\poly-decomp\\src\\index.js",__dirname="/..\\node_modules\\poly-decomp\\src";module.exports = { Polygon : require("./Polygon"), Point : require("./Point"), }; },{"./Point":4,"./Polygon":5,"__browserify_Buffer":1,"__browserify_process":2}],8:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/..\\package.json",__dirname="/..";module.exports={ "name": "p2", "version": "0.6.0", "description": "A JavaScript 2D physics engine.", "author": "Stefan Hedman (http://steffe.se)", "keywords": [ "p2.js", "p2", "physics", "engine", "2d" ], "main": "./src/p2.js", "engines": { "node": "*" }, "repository": { "type": "git", "url": "https://github.com/schteppe/p2.js.git" }, "bugs": { "url": "https://github.com/schteppe/p2.js/issues" }, "licenses": [ { "type": "MIT" } ], "devDependencies": { "grunt": "~0.4.0", "grunt-contrib-jshint": "~0.9.2", "grunt-contrib-nodeunit": "~0.1.2", "grunt-contrib-uglify": "~0.4.0", "grunt-contrib-watch": "~0.5.0", "grunt-browserify": "~2.0.1", "grunt-contrib-concat": "^0.4.0" }, "dependencies": { "poly-decomp": "0.1.0" } } },{"__browserify_Buffer":1,"__browserify_process":2}],9:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/collision\\AABB.js",__dirname="/collision";var vec2 = require('../math/vec2') , Utils = require('../utils/Utils'); module.exports = AABB; /** * Axis aligned bounding box class. * @class AABB * @constructor * @param {Object} [options] * @param {Array} [options.upperBound] * @param {Array} [options.lowerBound] */ function AABB(options){ /** * The lower bound of the bounding box. * @property lowerBound * @type {Array} */ this.lowerBound = vec2.create(); if(options && options.lowerBound){ vec2.copy(this.lowerBound, options.lowerBound); } /** * The upper bound of the bounding box. * @property upperBound * @type {Array} */ this.upperBound = vec2.create(); if(options && options.upperBound){ vec2.copy(this.upperBound, options.upperBound); } } var tmp = vec2.create(); /** * Set the AABB bounds from a set of points. * @method setFromPoints * @param {Array} points An array of vec2's. */ AABB.prototype.setFromPoints = function(points, position, angle, skinSize){ var l = this.lowerBound, u = this.upperBound; if(typeof(angle) !== "number"){ angle = 0; } // Set to the first point if(angle !== 0){ vec2.rotate(l, points[0], angle); } else { vec2.copy(l, points[0]); } vec2.copy(u, l); // Compute cosines and sines just once var cosAngle = Math.cos(angle), sinAngle = Math.sin(angle); for(var i = 1; i u[j]){ u[j] = p[j]; } if(p[j] < l[j]){ l[j] = p[j]; } } } // Add offset if(position){ vec2.add(this.lowerBound, this.lowerBound, position); vec2.add(this.upperBound, this.upperBound, position); } if(skinSize){ this.lowerBound[0] -= skinSize; this.lowerBound[1] -= skinSize; this.upperBound[0] += skinSize; this.upperBound[1] += skinSize; } }; /** * Copy bounds from an AABB to this AABB * @method copy * @param {AABB} aabb */ AABB.prototype.copy = function(aabb){ vec2.copy(this.lowerBound, aabb.lowerBound); vec2.copy(this.upperBound, aabb.upperBound); }; /** * Extend this AABB so that it covers the given AABB too. * @method extend * @param {AABB} aabb */ AABB.prototype.extend = function(aabb){ // Loop over x and y var i = 2; while(i--){ // Extend lower bound var l = aabb.lowerBound[i]; if(this.lowerBound[i] > l){ this.lowerBound[i] = l; } // Upper var u = aabb.upperBound[i]; if(this.upperBound[i] < u){ this.upperBound[i] = u; } } }; /** * Returns true if the given AABB overlaps this AABB. * @method overlaps * @param {AABB} aabb * @return {Boolean} */ AABB.prototype.overlaps = function(aabb){ var l1 = this.lowerBound, u1 = this.upperBound, l2 = aabb.lowerBound, u2 = aabb.upperBound; // l2 u2 // |---------| // |--------| // l1 u1 return ((l2[0] <= u1[0] && u1[0] <= u2[0]) || (l1[0] <= u2[0] && u2[0] <= u1[0])) && ((l2[1] <= u1[1] && u1[1] <= u2[1]) || (l1[1] <= u2[1] && u2[1] <= u1[1])); }; },{"../math/vec2":31,"../utils/Utils":50,"__browserify_Buffer":1,"__browserify_process":2}],10:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/collision\\Broadphase.js",__dirname="/collision";var vec2 = require('../math/vec2'); var Body = require('../objects/Body'); module.exports = Broadphase; /** * Base class for broadphase implementations. * @class Broadphase * @constructor */ function Broadphase(type){ this.type = type; /** * The resulting overlapping pairs. Will be filled with results during .getCollisionPairs(). * @property result * @type {Array} */ this.result = []; /** * The world to search for collision pairs in. To change it, use .setWorld() * @property world * @type {World} * @readOnly */ this.world = null; /** * The bounding volume type to use in the broadphase algorithms. * @property {Number} boundingVolumeType */ this.boundingVolumeType = Broadphase.AABB; } /** * Axis aligned bounding box type. * @static * @property {Number} AABB */ Broadphase.AABB = 1; /** * Bounding circle type. * @static * @property {Number} BOUNDING_CIRCLE */ Broadphase.BOUNDING_CIRCLE = 2; /** * Set the world that we are searching for collision pairs in * @method setWorld * @param {World} world */ Broadphase.prototype.setWorld = function(world){ this.world = world; }; /** * Get all potential intersecting body pairs. * @method getCollisionPairs * @param {World} world The world to search in. * @return {Array} An array of the bodies, ordered in pairs. Example: A result of [a,b,c,d] means that the potential pairs are: (a,b), (c,d). */ Broadphase.prototype.getCollisionPairs = function(world){ throw new Error("getCollisionPairs must be implemented in a subclass!"); }; var dist = vec2.create(); /** * Check whether the bounding radius of two bodies overlap. * @method boundingRadiusCheck * @param {Body} bodyA * @param {Body} bodyB * @return {Boolean} */ Broadphase.boundingRadiusCheck = function(bodyA, bodyB){ vec2.sub(dist, bodyA.position, bodyB.position); var d2 = vec2.squaredLength(dist), r = bodyA.boundingRadius + bodyB.boundingRadius; return d2 <= r*r; }; /** * Check whether the bounding radius of two bodies overlap. * @method boundingRadiusCheck * @param {Body} bodyA * @param {Body} bodyB * @return {Boolean} */ Broadphase.aabbCheck = function(bodyA, bodyB){ return bodyA.getAABB().overlaps(bodyB.getAABB()); }; /** * Check whether the bounding radius of two bodies overlap. * @method boundingRadiusCheck * @param {Body} bodyA * @param {Body} bodyB * @return {Boolean} */ Broadphase.prototype.boundingVolumeCheck = function(bodyA, bodyB){ var result; switch(this.boundingVolumeType){ case Broadphase.BOUNDING_CIRCLE: result = Broadphase.boundingRadiusCheck(bodyA,bodyB); break; case Broadphase.AABB: result = Broadphase.aabbCheck(bodyA,bodyB); break; default: throw new Error('Bounding volume type not recognized: '+this.boundingVolumeType); } return result; }; /** * Check whether two bodies are allowed to collide at all. * @method canCollide * @param {Body} bodyA * @param {Body} bodyB * @return {Boolean} */ Broadphase.canCollide = function(bodyA, bodyB){ // Cannot collide static bodies if(bodyA.type === Body.STATIC && bodyB.type === Body.STATIC){ return false; } // Cannot collide static vs kinematic bodies if( (bodyA.type === Body.KINEMATIC && bodyB.type === Body.STATIC) || (bodyA.type === Body.STATIC && bodyB.type === Body.KINEMATIC)){ return false; } // Cannot collide kinematic vs kinematic if(bodyA.type === Body.KINEMATIC && bodyB.type === Body.KINEMATIC){ return false; } // Cannot collide both sleeping bodies if(bodyA.sleepState === Body.SLEEPING && bodyB.sleepState === Body.SLEEPING){ return false; } // Cannot collide if one is static and the other is sleeping if( (bodyA.sleepState === Body.SLEEPING && bodyB.type === Body.STATIC) || (bodyB.sleepState === Body.SLEEPING && bodyA.type === Body.STATIC)){ return false; } return true; }; Broadphase.NAIVE = 1; Broadphase.SAP = 2; },{"../math/vec2":31,"../objects/Body":32,"__browserify_Buffer":1,"__browserify_process":2}],11:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/collision\\GridBroadphase.js",__dirname="/collision";var Circle = require('../shapes/Circle') , Plane = require('../shapes/Plane') , Particle = require('../shapes/Particle') , Broadphase = require('../collision/Broadphase') , vec2 = require('../math/vec2') , Utils = require('../utils/Utils'); module.exports = GridBroadphase; /** * Broadphase that uses axis-aligned bins. * @class GridBroadphase * @constructor * @extends Broadphase * @param {object} [options] * @param {number} [options.xmin] Lower x bound of the grid * @param {number} [options.xmax] Upper x bound * @param {number} [options.ymin] Lower y bound * @param {number} [options.ymax] Upper y bound * @param {number} [options.nx] Number of bins along x axis * @param {number} [options.ny] Number of bins along y axis * @todo Should have an option for dynamic scene size */ function GridBroadphase(options){ Broadphase.apply(this); options = Utils.defaults(options,{ xmin: -100, xmax: 100, ymin: -100, ymax: 100, nx: 10, ny: 10 }); this.xmin = options.xmin; this.ymin = options.ymin; this.xmax = options.xmax; this.ymax = options.ymax; this.nx = options.nx; this.ny = options.ny; this.binsizeX = (this.xmax-this.xmin) / this.nx; this.binsizeY = (this.ymax-this.ymin) / this.ny; } GridBroadphase.prototype = new Broadphase(); /** * Get collision pairs. * @method getCollisionPairs * @param {World} world * @return {Array} */ GridBroadphase.prototype.getCollisionPairs = function(world){ var result = [], bodies = world.bodies, Ncolliding = bodies.length, binsizeX = this.binsizeX, binsizeY = this.binsizeY, nx = this.nx, ny = this.ny, xmin = this.xmin, ymin = this.ymin, xmax = this.xmax, ymax = this.ymax; // Todo: make garbage free var bins=[], Nbins=nx*ny; for(var i=0; i= 0 && idx < Nbins){ bins[ idx ].push(bi); } } } } // Check each bin for(var i=0; i!==Nbins; i++){ var bin = bins[i]; for(var j=0, NbodiesInBin=bin.length; j!==NbodiesInBin; j++){ var bi = bin[j]; for(var k=0; k!==j; k++){ var bj = bin[k]; if(Broadphase.canCollide(bi,bj) && this.boundingVolumeCheck(bi,bj)){ result.push(bi,bj); } } } } return result; }; },{"../collision/Broadphase":10,"../math/vec2":31,"../shapes/Circle":38,"../shapes/Particle":42,"../shapes/Plane":43,"../utils/Utils":50,"__browserify_Buffer":1,"__browserify_process":2}],12:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/collision\\NaiveBroadphase.js",__dirname="/collision";var Circle = require('../shapes/Circle'), Plane = require('../shapes/Plane'), Shape = require('../shapes/Shape'), Particle = require('../shapes/Particle'), Broadphase = require('../collision/Broadphase'), vec2 = require('../math/vec2'); module.exports = NaiveBroadphase; /** * Naive broadphase implementation. Does N^2 tests. * * @class NaiveBroadphase * @constructor * @extends Broadphase */ function NaiveBroadphase(){ Broadphase.call(this, Broadphase.NAIVE); } NaiveBroadphase.prototype = new Broadphase(); /** * Get the colliding pairs * @method getCollisionPairs * @param {World} world * @return {Array} */ NaiveBroadphase.prototype.getCollisionPairs = function(world){ var bodies = world.bodies, result = this.result; result.length = 0; for(var i=0, Ncolliding=bodies.length; i!==Ncolliding; i++){ var bi = bodies[i]; for(var j=0; j pos0 && pos < pos1){ // We got contact! if(justTest){ return true; } var c = this.createContactEquation(circleBody,lineBody,circleShape,lineShape); vec2.scale(c.normalA, orthoDist, -1); vec2.normalize(c.normalA, c.normalA); vec2.scale( c.contactPointA, c.normalA, circleRadius); add(c.contactPointA, c.contactPointA, circleOffset); sub(c.contactPointA, c.contactPointA, circleBody.position); sub(c.contactPointB, projectedPoint, lineOffset); add(c.contactPointB, c.contactPointB, lineOffset); sub(c.contactPointB, c.contactPointB, lineBody.position); this.contactEquations.push(c); if(this.enableFriction){ this.frictionEquations.push(this.createFrictionFromContact(c)); } return 1; } } // Add corner verts[0] = worldVertex0; verts[1] = worldVertex1; for(var i=0; i 0){ for(var i=0; i Math.pow(r,2)){ return 0; } if(justTest){ return true; } var c = this.createContactEquation(bodyA,bodyB,shapeA,shapeB); sub(c.normalA, offsetB, offsetA); vec2.normalize(c.normalA,c.normalA); vec2.scale( c.contactPointA, c.normalA, radiusA); vec2.scale( c.contactPointB, c.normalA, -radiusB); add(c.contactPointA, c.contactPointA, offsetA); sub(c.contactPointA, c.contactPointA, bodyA.position); add(c.contactPointB, c.contactPointB, offsetB); sub(c.contactPointB, c.contactPointB, bodyB.position); this.contactEquations.push(c); if(this.enableFriction){ this.frictionEquations.push(this.createFrictionFromContact(c)); } return 1; }; /** * Plane/Convex Narrowphase * @method planeConvex * @param {Body} planeBody * @param {Plane} planeShape * @param {Array} planeOffset * @param {Number} planeAngle * @param {Body} convexBody * @param {Convex} convexShape * @param {Array} convexOffset * @param {Number} convexAngle * @param {Boolean} justTest */ Narrowphase.prototype[Shape.PLANE | Shape.CONVEX] = Narrowphase.prototype[Shape.PLANE | Shape.RECTANGLE] = Narrowphase.prototype.planeConvex = function( planeBody, planeShape, planeOffset, planeAngle, convexBody, convexShape, convexOffset, convexAngle, justTest ){ var worldVertex = tmp1, worldNormal = tmp2, dist = tmp3; var numReported = 0; vec2.rotate(worldNormal, yAxis, planeAngle); for(var i=0; i!==convexShape.vertices.length; i++){ var v = convexShape.vertices[i]; vec2.rotate(worldVertex, v, convexAngle); add(worldVertex, worldVertex, convexOffset); sub(dist, worldVertex, planeOffset); if(dot(dist,worldNormal) <= 0){ if(justTest){ return true; } // Found vertex numReported++; var c = this.createContactEquation(planeBody,convexBody,planeShape,convexShape); sub(dist, worldVertex, planeOffset); vec2.copy(c.normalA, worldNormal); var d = dot(dist, c.normalA); vec2.scale(dist, c.normalA, d); // rj is from convex center to contact sub(c.contactPointB, worldVertex, convexBody.position); // ri is from plane center to contact sub( c.contactPointA, worldVertex, dist); sub( c.contactPointA, c.contactPointA, planeBody.position); this.contactEquations.push(c); if(!this.enableFrictionReduction){ if(this.enableFriction){ this.frictionEquations.push(this.createFrictionFromContact(c)); } } } } if(this.enableFrictionReduction){ if(this.enableFriction && numReported){ this.frictionEquations.push(this.createFrictionFromAverage(numReported)); } } return numReported; }; /** * Narrowphase for particle vs plane * @method particlePlane * @param {Body} particleBody * @param {Particle} particleShape * @param {Array} particleOffset * @param {Number} particleAngle * @param {Body} planeBody * @param {Plane} planeShape * @param {Array} planeOffset * @param {Number} planeAngle * @param {Boolean} justTest */ Narrowphase.prototype[Shape.PARTICLE | Shape.PLANE] = Narrowphase.prototype.particlePlane = function( particleBody, particleShape, particleOffset, particleAngle, planeBody, planeShape, planeOffset, planeAngle, justTest ){ var dist = tmp1, worldNormal = tmp2; planeAngle = planeAngle || 0; sub(dist, particleOffset, planeOffset); vec2.rotate(worldNormal, yAxis, planeAngle); var d = dot(dist, worldNormal); if(d > 0){ return 0; } if(justTest){ return true; } var c = this.createContactEquation(planeBody,particleBody,planeShape,particleShape); vec2.copy(c.normalA, worldNormal); vec2.scale( dist, c.normalA, d ); // dist is now the distance vector in the normal direction // ri is the particle position projected down onto the plane, from the plane center sub( c.contactPointA, particleOffset, dist); sub( c.contactPointA, c.contactPointA, planeBody.position); // rj is from the body center to the particle center sub( c.contactPointB, particleOffset, particleBody.position ); this.contactEquations.push(c); if(this.enableFriction){ this.frictionEquations.push(this.createFrictionFromContact(c)); } return 1; }; /** * Circle/Particle Narrowphase * @method circleParticle * @param {Body} circleBody * @param {Circle} circleShape * @param {Array} circleOffset * @param {Number} circleAngle * @param {Body} particleBody * @param {Particle} particleShape * @param {Array} particleOffset * @param {Number} particleAngle * @param {Boolean} justTest */ Narrowphase.prototype[Shape.CIRCLE | Shape.PARTICLE] = Narrowphase.prototype.circleParticle = function( circleBody, circleShape, circleOffset, circleAngle, particleBody, particleShape, particleOffset, particleAngle, justTest ){ var dist = tmp1; sub(dist, particleOffset, circleOffset); if(vec2.squaredLength(dist) > Math.pow(circleShape.radius, 2)){ return 0; } if(justTest){ return true; } var c = this.createContactEquation(circleBody,particleBody,circleShape,particleShape); vec2.copy(c.normalA, dist); vec2.normalize(c.normalA,c.normalA); // Vector from circle to contact point is the normal times the circle radius vec2.scale(c.contactPointA, c.normalA, circleShape.radius); add(c.contactPointA, c.contactPointA, circleOffset); sub(c.contactPointA, c.contactPointA, circleBody.position); // Vector from particle center to contact point is zero sub(c.contactPointB, particleOffset, particleBody.position); this.contactEquations.push(c); if(this.enableFriction){ this.frictionEquations.push(this.createFrictionFromContact(c)); } return 1; }; var planeCapsule_tmpCircle = new Circle(1), planeCapsule_tmp1 = vec2.create(), planeCapsule_tmp2 = vec2.create(), planeCapsule_tmp3 = vec2.create(); /** * @method planeCapsule * @param {Body} planeBody * @param {Circle} planeShape * @param {Array} planeOffset * @param {Number} planeAngle * @param {Body} capsuleBody * @param {Particle} capsuleShape * @param {Array} capsuleOffset * @param {Number} capsuleAngle * @param {Boolean} justTest */ Narrowphase.prototype[Shape.PLANE | Shape.CAPSULE] = Narrowphase.prototype.planeCapsule = function( planeBody, planeShape, planeOffset, planeAngle, capsuleBody, capsuleShape, capsuleOffset, capsuleAngle, justTest ){ var end1 = planeCapsule_tmp1, end2 = planeCapsule_tmp2, circle = planeCapsule_tmpCircle, dst = planeCapsule_tmp3; // Compute world end positions vec2.set(end1, -capsuleShape.length/2, 0); vec2.rotate(end1,end1,capsuleAngle); add(end1,end1,capsuleOffset); vec2.set(end2, capsuleShape.length/2, 0); vec2.rotate(end2,end2,capsuleAngle); add(end2,end2,capsuleOffset); circle.radius = capsuleShape.radius; var enableFrictionBefore; // Temporarily turn off friction if(this.enableFrictionReduction){ enableFrictionBefore = this.enableFriction; this.enableFriction = false; } // Do Narrowphase as two circles var numContacts1 = this.circlePlane(capsuleBody,circle,end1,0, planeBody,planeShape,planeOffset,planeAngle, justTest), numContacts2 = this.circlePlane(capsuleBody,circle,end2,0, planeBody,planeShape,planeOffset,planeAngle, justTest); // Restore friction if(this.enableFrictionReduction){ this.enableFriction = enableFrictionBefore; } if(justTest){ return numContacts1 || numContacts2; } else { var numTotal = numContacts1 + numContacts2; if(this.enableFrictionReduction){ if(numTotal){ this.frictionEquations.push(this.createFrictionFromAverage(numTotal)); } } return numTotal; } }; /** * Creates ContactEquations and FrictionEquations for a collision. * @method circlePlane * @param {Body} bi The first body that should be connected to the equations. * @param {Circle} si The circle shape participating in the collision. * @param {Array} xi Extra offset to take into account for the Shape, in addition to the one in circleBody.position. Will *not* be rotated by circleBody.angle (maybe it should, for sake of homogenity?). Set to null if none. * @param {Body} bj The second body that should be connected to the equations. * @param {Plane} sj The Plane shape that is participating * @param {Array} xj Extra offset for the plane shape. * @param {Number} aj Extra angle to apply to the plane */ Narrowphase.prototype[Shape.CIRCLE | Shape.PLANE] = Narrowphase.prototype.circlePlane = function( bi,si,xi,ai, bj,sj,xj,aj, justTest ){ var circleBody = bi, circleShape = si, circleOffset = xi, // Offset from body center, rotated! planeBody = bj, shapeB = sj, planeOffset = xj, planeAngle = aj; planeAngle = planeAngle || 0; // Vector from plane to circle var planeToCircle = tmp1, worldNormal = tmp2, temp = tmp3; sub(planeToCircle, circleOffset, planeOffset); // World plane normal vec2.rotate(worldNormal, yAxis, planeAngle); // Normal direction distance var d = dot(worldNormal, planeToCircle); if(d > circleShape.radius){ return 0; // No overlap. Abort. } if(justTest){ return true; } // Create contact var contact = this.createContactEquation(planeBody,circleBody,sj,si); // ni is the plane world normal vec2.copy(contact.normalA, worldNormal); // rj is the vector from circle center to the contact point vec2.scale(contact.contactPointB, contact.normalA, -circleShape.radius); add(contact.contactPointB, contact.contactPointB, circleOffset); sub(contact.contactPointB, contact.contactPointB, circleBody.position); // ri is the distance from plane center to contact. vec2.scale(temp, contact.normalA, d); sub(contact.contactPointA, planeToCircle, temp ); // Subtract normal distance vector from the distance vector add(contact.contactPointA, contact.contactPointA, planeOffset); sub(contact.contactPointA, contact.contactPointA, planeBody.position); this.contactEquations.push(contact); if(this.enableFriction){ this.frictionEquations.push( this.createFrictionFromContact(contact) ); } return 1; }; /** * Convex/convex Narrowphase.See this article for more info. * @method convexConvex * @param {Body} bi * @param {Convex} si * @param {Array} xi * @param {Number} ai * @param {Body} bj * @param {Convex} sj * @param {Array} xj * @param {Number} aj */ Narrowphase.prototype[Shape.CONVEX] = Narrowphase.prototype[Shape.CONVEX | Shape.RECTANGLE] = Narrowphase.prototype[Shape.RECTANGLE] = Narrowphase.prototype.convexConvex = function( bi,si,xi,ai, bj,sj,xj,aj, justTest, precision ){ var sepAxis = tmp1, worldPoint = tmp2, worldPoint0 = tmp3, worldPoint1 = tmp4, worldEdge = tmp5, projected = tmp6, penetrationVec = tmp7, dist = tmp8, worldNormal = tmp9, numContacts = 0, precision = typeof(precision) === 'number' ? precision : 0; var found = Narrowphase.findSeparatingAxis(si,xi,ai,sj,xj,aj,sepAxis); if(!found){ return 0; } // Make sure the separating axis is directed from shape i to shape j sub(dist,xj,xi); if(dot(sepAxis,dist) > 0){ vec2.scale(sepAxis,sepAxis,-1); } // Find edges with normals closest to the separating axis var closestEdge1 = Narrowphase.getClosestEdge(si,ai,sepAxis,true), // Flipped axis closestEdge2 = Narrowphase.getClosestEdge(sj,aj,sepAxis); if(closestEdge1 === -1 || closestEdge2 === -1){ return 0; } // Loop over the shapes for(var k=0; k<2; k++){ var closestEdgeA = closestEdge1, closestEdgeB = closestEdge2, shapeA = si, shapeB = sj, offsetA = xi, offsetB = xj, angleA = ai, angleB = aj, bodyA = bi, bodyB = bj; if(k === 0){ // Swap! var tmp; tmp = closestEdgeA; closestEdgeA = closestEdgeB; closestEdgeB = tmp; tmp = shapeA; shapeA = shapeB; shapeB = tmp; tmp = offsetA; offsetA = offsetB; offsetB = tmp; tmp = angleA; angleA = angleB; angleB = tmp; tmp = bodyA; bodyA = bodyB; bodyB = tmp; } // Loop over 2 points in convex B for(var j=closestEdgeB; j= 3){ if(justTest){ return true; } // worldPoint was on the "inside" side of each of the 3 checked edges. // Project it to the center edge and use the projection direction as normal // Create contact var c = this.createContactEquation(bodyA,bodyB,shapeA,shapeB); numContacts++; // Get center edge from body A var v0 = shapeA.vertices[(closestEdgeA) % shapeA.vertices.length], v1 = shapeA.vertices[(closestEdgeA+1) % shapeA.vertices.length]; // Construct the edge vec2.rotate(worldPoint0, v0, angleA); vec2.rotate(worldPoint1, v1, angleA); add(worldPoint0, worldPoint0, offsetA); add(worldPoint1, worldPoint1, offsetA); sub(worldEdge, worldPoint1, worldPoint0); vec2.rotate90cw(c.normalA, worldEdge); // Normal points out of convex A vec2.normalize(c.normalA,c.normalA); sub(dist, worldPoint, worldPoint0); // From edge point to the penetrating point var d = dot(c.normalA,dist); // Penetration vec2.scale(penetrationVec, c.normalA, d); // Vector penetration sub(c.contactPointA, worldPoint, offsetA); sub(c.contactPointA, c.contactPointA, penetrationVec); add(c.contactPointA, c.contactPointA, offsetA); sub(c.contactPointA, c.contactPointA, bodyA.position); sub(c.contactPointB, worldPoint, offsetB); add(c.contactPointB, c.contactPointB, offsetB); sub(c.contactPointB, c.contactPointB, bodyB.position); this.contactEquations.push(c); // Todo reduce to 1 friction equation if we have 2 contact points if(!this.enableFrictionReduction){ if(this.enableFriction){ this.frictionEquations.push(this.createFrictionFromContact(c)); } } } } } if(this.enableFrictionReduction){ if(this.enableFriction && numContacts){ this.frictionEquations.push(this.createFrictionFromAverage(numContacts)); } } return numContacts; }; // .projectConvex is called by other functions, need local tmp vectors var pcoa_tmp1 = vec2.fromValues(0,0); /** * Project a Convex onto a world-oriented axis * @method projectConvexOntoAxis * @static * @param {Convex} convexShape * @param {Array} convexOffset * @param {Number} convexAngle * @param {Array} worldAxis * @param {Array} result */ Narrowphase.projectConvexOntoAxis = function(convexShape, convexOffset, convexAngle, worldAxis, result){ var max=null, min=null, v, value, localAxis = pcoa_tmp1; // Convert the axis to local coords of the body vec2.rotate(localAxis, worldAxis, -convexAngle); // Get projected position of all vertices for(var i=0; i max){ max = value; } if(min === null || value < min){ min = value; } } if(min > max){ var t = min; min = max; max = t; } // Project the position of the body onto the axis - need to add this to the result var offset = dot(convexOffset, worldAxis); vec2.set( result, min + offset, max + offset); }; // .findSeparatingAxis is called by other functions, need local tmp vectors var fsa_tmp1 = vec2.fromValues(0,0) , fsa_tmp2 = vec2.fromValues(0,0) , fsa_tmp3 = vec2.fromValues(0,0) , fsa_tmp4 = vec2.fromValues(0,0) , fsa_tmp5 = vec2.fromValues(0,0) , fsa_tmp6 = vec2.fromValues(0,0); /** * Find a separating axis between the shapes, that maximizes the separating distance between them. * @method findSeparatingAxis * @static * @param {Convex} c1 * @param {Array} offset1 * @param {Number} angle1 * @param {Convex} c2 * @param {Array} offset2 * @param {Number} angle2 * @param {Array} sepAxis The resulting axis * @return {Boolean} Whether the axis could be found. */ Narrowphase.findSeparatingAxis = function(c1,offset1,angle1,c2,offset2,angle2,sepAxis){ var maxDist = null, overlap = false, found = false, edge = fsa_tmp1, worldPoint0 = fsa_tmp2, worldPoint1 = fsa_tmp3, normal = fsa_tmp4, span1 = fsa_tmp5, span2 = fsa_tmp6; if(c1 instanceof Rectangle && c2 instanceof Rectangle){ for(var j=0; j!==2; j++){ var c = c1, angle = angle1; if(j===1){ c = c2; angle = angle2; } for(var i=0; i!==2; i++){ // Get the world edge if(i === 0){ vec2.set(normal, 0, 1); } else if(i === 1) { vec2.set(normal, 1, 0); } if(angle !== 0){ vec2.rotate(normal, normal, angle); } // Project hulls onto that normal Narrowphase.projectConvexOntoAxis(c1,offset1,angle1,normal,span1); Narrowphase.projectConvexOntoAxis(c2,offset2,angle2,normal,span2); // Order by span position var a=span1, b=span2, swapped = false; if(span1[0] > span2[0]){ b=span1; a=span2; swapped = true; } // Get separating distance var dist = b[0] - a[1]; overlap = (dist <= 0); if(maxDist===null || dist > maxDist){ vec2.copy(sepAxis, normal); maxDist = dist; found = overlap; } } } } else { for(var j=0; j!==2; j++){ var c = c1, angle = angle1; if(j===1){ c = c2; angle = angle2; } for(var i=0; i!==c.vertices.length; i++){ // Get the world edge vec2.rotate(worldPoint0, c.vertices[i], angle); vec2.rotate(worldPoint1, c.vertices[(i+1)%c.vertices.length], angle); sub(edge, worldPoint1, worldPoint0); // Get normal - just rotate 90 degrees since vertices are given in CCW vec2.rotate90cw(normal, edge); vec2.normalize(normal,normal); // Project hulls onto that normal Narrowphase.projectConvexOntoAxis(c1,offset1,angle1,normal,span1); Narrowphase.projectConvexOntoAxis(c2,offset2,angle2,normal,span2); // Order by span position var a=span1, b=span2, swapped = false; if(span1[0] > span2[0]){ b=span1; a=span2; swapped = true; } // Get separating distance var dist = b[0] - a[1]; overlap = (dist <= 0); if(maxDist===null || dist > maxDist){ vec2.copy(sepAxis, normal); maxDist = dist; found = overlap; } } } } /* // Needs to be tested some more for(var j=0; j!==2; j++){ var c = c1, angle = angle1; if(j===1){ c = c2; angle = angle2; } for(var i=0; i!==c.axes.length; i++){ var normal = c.axes[i]; // Project hulls onto that normal Narrowphase.projectConvexOntoAxis(c1, offset1, angle1, normal, span1); Narrowphase.projectConvexOntoAxis(c2, offset2, angle2, normal, span2); // Order by span position var a=span1, b=span2, swapped = false; if(span1[0] > span2[0]){ b=span1; a=span2; swapped = true; } // Get separating distance var dist = b[0] - a[1]; overlap = (dist <= Narrowphase.convexPrecision); if(maxDist===null || dist > maxDist){ vec2.copy(sepAxis, normal); maxDist = dist; found = overlap; } } } */ return found; }; // .getClosestEdge is called by other functions, need local tmp vectors var gce_tmp1 = vec2.fromValues(0,0) , gce_tmp2 = vec2.fromValues(0,0) , gce_tmp3 = vec2.fromValues(0,0); /** * Get the edge that has a normal closest to an axis. * @method getClosestEdge * @static * @param {Convex} c * @param {Number} angle * @param {Array} axis * @param {Boolean} flip * @return {Number} Index of the edge that is closest. This index and the next spans the resulting edge. Returns -1 if failed. */ Narrowphase.getClosestEdge = function(c,angle,axis,flip){ var localAxis = gce_tmp1, edge = gce_tmp2, normal = gce_tmp3; // Convert the axis to local coords of the body vec2.rotate(localAxis, axis, -angle); if(flip){ vec2.scale(localAxis,localAxis,-1); } var closestEdge = -1, N = c.vertices.length, maxDot = -1; for(var i=0; i!==N; i++){ // Get the edge sub(edge, c.vertices[(i+1)%N], c.vertices[i%N]); // Get normal - just rotate 90 degrees since vertices are given in CCW vec2.rotate90cw(normal, edge); vec2.normalize(normal,normal); var d = dot(normal,localAxis); if(closestEdge === -1 || d > maxDot){ closestEdge = i % N; maxDot = d; } } return closestEdge; }; var circleHeightfield_candidate = vec2.create(), circleHeightfield_dist = vec2.create(), circleHeightfield_v0 = vec2.create(), circleHeightfield_v1 = vec2.create(), circleHeightfield_minCandidate = vec2.create(), circleHeightfield_worldNormal = vec2.create(), circleHeightfield_minCandidateNormal = vec2.create(); /** * @method circleHeightfield * @param {Body} bi * @param {Circle} si * @param {Array} xi * @param {Body} bj * @param {Heightfield} sj * @param {Array} xj * @param {Number} aj */ Narrowphase.prototype[Shape.CIRCLE | Shape.HEIGHTFIELD] = Narrowphase.prototype.circleHeightfield = function( circleBody,circleShape,circlePos,circleAngle, hfBody,hfShape,hfPos,hfAngle, justTest, radius ){ var data = hfShape.data, radius = radius || circleShape.radius, w = hfShape.elementWidth, dist = circleHeightfield_dist, candidate = circleHeightfield_candidate, minCandidate = circleHeightfield_minCandidate, minCandidateNormal = circleHeightfield_minCandidateNormal, worldNormal = circleHeightfield_worldNormal, v0 = circleHeightfield_v0, v1 = circleHeightfield_v1; // Get the index of the points to test against var idxA = Math.floor( (circlePos[0] - radius - hfPos[0]) / w ), idxB = Math.ceil( (circlePos[0] + radius - hfPos[0]) / w ); /*if(idxB < 0 || idxA >= data.length) return justTest ? false : 0;*/ if(idxA < 0){ idxA = 0; } if(idxB >= data.length){ idxB = data.length-1; } // Get max and min var max = data[idxA], min = data[idxB]; for(var i=idxA; i max){ max = data[i]; } } if(circlePos[1]-radius > max){ return justTest ? false : 0; } /* if(circlePos[1]+radius < min){ // Below the minimum point... We can just guess. // TODO } */ // 1. Check so center of circle is not inside the field. If it is, this wont work... // 2. For each edge // 2. 1. Get point on circle that is closest to the edge (scale normal with -radius) // 2. 2. Check if point is inside. var found = false; // Check all edges first for(var i=idxA; i= v0[0] && candidate[0] < v1[0] && d <= 0){ if(justTest){ return true; } found = true; // Store the candidate point, projected to the edge vec2.scale(dist,worldNormal,-d); vec2.add(minCandidate,candidate,dist); vec2.copy(minCandidateNormal,worldNormal); var c = this.createContactEquation(hfBody,circleBody,hfShape,circleShape); // Normal is out of the heightfield vec2.copy(c.normalA, minCandidateNormal); // Vector from circle to heightfield vec2.scale(c.contactPointB, c.normalA, -radius); add(c.contactPointB, c.contactPointB, circlePos); sub(c.contactPointB, c.contactPointB, circleBody.position); vec2.copy(c.contactPointA, minCandidate); vec2.sub(c.contactPointA, c.contactPointA, hfBody.position); this.contactEquations.push(c); if(this.enableFriction){ this.frictionEquations.push( this.createFrictionFromContact(c) ); } } } // Check all vertices found = false; if(radius > 0){ for(var i=idxA; i<=idxB; i++){ // Get point vec2.set(v0, i*w, data[i]); vec2.add(v0,v0,hfPos); vec2.sub(dist, circlePos, v0); if(vec2.squaredLength(dist) < Math.pow(radius, 2)){ if(justTest){ return true; } found = true; var c = this.createContactEquation(hfBody,circleBody,hfShape,circleShape); // Construct normal - out of heightfield vec2.copy(c.normalA, dist); vec2.normalize(c.normalA,c.normalA); vec2.scale(c.contactPointB, c.normalA, -radius); add(c.contactPointB, c.contactPointB, circlePos); sub(c.contactPointB, c.contactPointB, circleBody.position); sub(c.contactPointA, v0, hfPos); add(c.contactPointA, c.contactPointA, hfPos); sub(c.contactPointA, c.contactPointA, hfBody.position); this.contactEquations.push(c); if(this.enableFriction){ this.frictionEquations.push(this.createFrictionFromContact(c)); } } } } if(found){ return 1; } return 0; }; var convexHeightfield_v0 = vec2.create(), convexHeightfield_v1 = vec2.create(), convexHeightfield_tilePos = vec2.create(), convexHeightfield_tempConvexShape = new Convex([vec2.create(),vec2.create(),vec2.create(),vec2.create()]); /** * @method circleHeightfield * @param {Body} bi * @param {Circle} si * @param {Array} xi * @param {Body} bj * @param {Heightfield} sj * @param {Array} xj * @param {Number} aj */ Narrowphase.prototype[Shape.RECTANGLE | Shape.HEIGHTFIELD] = Narrowphase.prototype[Shape.CONVEX | Shape.HEIGHTFIELD] = Narrowphase.prototype.convexHeightfield = function( convexBody,convexShape,convexPos,convexAngle, hfBody,hfShape,hfPos,hfAngle, justTest ){ var data = hfShape.data, w = hfShape.elementWidth, v0 = convexHeightfield_v0, v1 = convexHeightfield_v1, tilePos = convexHeightfield_tilePos, tileConvex = convexHeightfield_tempConvexShape; // Get the index of the points to test against var idxA = Math.floor( (convexBody.aabb.lowerBound[0] - hfPos[0]) / w ), idxB = Math.ceil( (convexBody.aabb.upperBound[0] - hfPos[0]) / w ); if(idxA < 0){ idxA = 0; } if(idxB >= data.length){ idxB = data.length-1; } // Get max and min var max = data[idxA], min = data[idxB]; for(var i=idxA; i max){ max = data[i]; } } if(convexBody.aabb.lowerBound[1] > max){ return justTest ? false : 0; } var found = false; var numContacts = 0; // Loop over all edges // TODO: If possible, construct a convex from several data points (need o check if the points make a convex shape) for(var i=idxA; i=0;j--) { if(a[j].aabb.lowerBound[axisIndex] <= v.aabb.lowerBound[axisIndex]){ break; } a[j+1] = a[j]; } a[j+1] = v; } return a; }; /** * Get the colliding pairs * @method getCollisionPairs * @param {World} world * @return {Array} */ SAPBroadphase.prototype.getCollisionPairs = function(world){ var bodies = this.axisList, result = this.result, axisIndex = this.axisIndex; result.length = 0; // Update all AABBs if needed var l = bodies.length; while(l--){ var b = bodies[l]; if(b.aabbNeedsUpdate){ b.updateAABB(); } } // Sort the lists SAPBroadphase.sortAxisList(bodies, axisIndex); // Look through the X list for(var i=0, N=bodies.length|0; i!==N; i++){ var bi = bodies[i]; for(var j=i+1; j G = [-n -rixn n rjxn] var r = vec2.create(); var ri = vec2.create(); // worldAnchorA var rj = vec2.create(); // worldAnchorB var that = this; normal.computeGq = function(){ var bodyA = this.bodyA, bodyB = this.bodyB, xi = bodyA.position, xj = bodyB.position; // Transform local anchors to world vec2.rotate(ri, localAnchorA, bodyA.angle); vec2.rotate(rj, localAnchorB, bodyB.angle); vec2.add(r, xj, rj); vec2.sub(r, r, ri); vec2.sub(r, r, xi); //vec2.sub(r, bodyB.position, bodyA.position); return vec2.length(r) - that.distance; }; // Make the contact constraint bilateral this.setMaxForce(maxForce); /** * If the upper limit is enabled or not. * @property {Boolean} upperLimitEnabled */ this.upperLimitEnabled = false; /** * The upper constraint limit. * @property {number} upperLimit */ this.upperLimit = 1; /** * If the lower limit is enabled or not. * @property {Boolean} lowerLimitEnabled */ this.lowerLimitEnabled = false; /** * The lower constraint limit. * @property {number} lowerLimit */ this.lowerLimit = 0; /** * Current constraint position. This is equal to the current distance between the world anchor points. * @property {number} position */ this.position = 0; } DistanceConstraint.prototype = new Constraint(); /** * Update the constraint equations. Should be done if any of the bodies changed position, before solving. * @method update */ var n = vec2.create(); var ri = vec2.create(); // worldAnchorA var rj = vec2.create(); // worldAnchorB DistanceConstraint.prototype.update = function(){ var normal = this.equations[0], bodyA = this.bodyA, bodyB = this.bodyB, distance = this.distance, xi = bodyA.position, xj = bodyB.position, normalEquation = this.equations[0], G = normal.G; // Transform local anchors to world vec2.rotate(ri, this.localAnchorA, bodyA.angle); vec2.rotate(rj, this.localAnchorB, bodyB.angle); // Get world anchor points and normal vec2.add(n, xj, rj); vec2.sub(n, n, ri); vec2.sub(n, n, xi); this.position = vec2.length(n); var violating = false; if(this.upperLimitEnabled){ if(this.position > this.upperLimit){ normalEquation.maxForce = 0; normalEquation.minForce = -this.maxForce; this.distance = this.upperLimit; violating = true; } } if(this.lowerLimitEnabled){ if(this.position < this.lowerLimit){ normalEquation.maxForce = this.maxForce; normalEquation.minForce = 0; this.distance = this.lowerLimit; violating = true; } } if((this.lowerLimitEnabled || this.upperLimitEnabled) && !violating){ // No constraint needed. normalEquation.enabled = false; return; } normalEquation.enabled = true; vec2.normalize(n,n); // Caluclate cross products var rixn = vec2.crossLength(ri, n), rjxn = vec2.crossLength(rj, n); // G = [-n -rixn n rjxn] G[0] = -n[0]; G[1] = -n[1]; G[2] = -rixn; G[3] = n[0]; G[4] = n[1]; G[5] = rjxn; }; /** * Set the max force to be used * @method setMaxForce * @param {Number} f */ DistanceConstraint.prototype.setMaxForce = function(f){ var normal = this.equations[0]; normal.minForce = -f; normal.maxForce = f; }; /** * Get the max force * @method getMaxForce * @return {Number} */ DistanceConstraint.prototype.getMaxForce = function(f){ var normal = this.equations[0]; return normal.maxForce; }; },{"../equations/Equation":23,"../math/vec2":31,"../utils/Utils":50,"./Constraint":15,"__browserify_Buffer":1,"__browserify_process":2}],17:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/constraints\\GearConstraint.js",__dirname="/constraints";var Constraint = require('./Constraint') , Equation = require('../equations/Equation') , AngleLockEquation = require('../equations/AngleLockEquation') , vec2 = require('../math/vec2'); module.exports = GearConstraint; /** * Connects two bodies at given offset points, letting them rotate relative to each other around this point. * @class GearConstraint * @constructor * @author schteppe * @param {Body} bodyA * @param {Body} bodyB * @param {Object} [options] * @param {Number} [options.angle=0] Relative angle between the bodies. Will be set to the current angle between the bodies (the gear ratio is accounted for). * @param {Number} [options.ratio=1] Gear ratio. * @param {Number} [options.maxTorque] Maximum torque to apply. * @extends Constraint * @todo Ability to specify world points */ function GearConstraint(bodyA, bodyB, options){ options = options || {}; Constraint.call(this, bodyA, bodyB, Constraint.GEAR, options); /** * The gear ratio. * @property ratio * @type {Number} */ this.ratio = typeof(options.ratio) === "number" ? options.ratio : 1; /** * The relative angle * @property angle * @type {Number} */ this.angle = typeof(options.angle) === "number" ? options.angle : bodyB.angle - this.ratio * bodyA.angle; // Send same parameters to the equation options.angle = this.angle; options.ratio = this.ratio; this.equations = [ new AngleLockEquation(bodyA,bodyB,options), ]; // Set max torque if(typeof(options.maxTorque) === "number"){ this.setMaxTorque(options.maxTorque); } } GearConstraint.prototype = new Constraint(); GearConstraint.prototype.update = function(){ var eq = this.equations[0]; if(eq.ratio !== this.ratio){ eq.setRatio(this.ratio); } eq.angle = this.angle; }; /** * Set the max torque for the constraint. * @method setMaxTorque * @param {Number} torque */ GearConstraint.prototype.setMaxTorque = function(torque){ this.equations[0].setMaxTorque(torque); }; /** * Get the max torque for the constraint. * @method getMaxTorque * @return {Number} */ GearConstraint.prototype.getMaxTorque = function(torque){ return this.equations[0].maxForce; }; },{"../equations/AngleLockEquation":21,"../equations/Equation":23,"../math/vec2":31,"./Constraint":15,"__browserify_Buffer":1,"__browserify_process":2}],18:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/constraints\\LockConstraint.js",__dirname="/constraints";var Constraint = require('./Constraint') , vec2 = require('../math/vec2') , Equation = require('../equations/Equation'); module.exports = LockConstraint; /** * Locks the relative position between two bodies. * * @class LockConstraint * @constructor * @author schteppe * @param {Body} bodyA * @param {Body} bodyB * @param {Object} [options] * @param {Array} [options.localOffsetB] The offset of bodyB in bodyA's frame. If not given the offset is computed from current positions. * @param {number} [options.localAngleB] The angle of bodyB in bodyA's frame. If not given, the angle is computed from current angles. * @param {number} [options.maxForce] * @extends Constraint */ function LockConstraint(bodyA, bodyB, options){ options = options || {}; Constraint.call(this,bodyA,bodyB,Constraint.LOCK,options); var maxForce = ( typeof(options.maxForce)==="undefined" ? Number.MAX_VALUE : options.maxForce ); var localAngleB = options.localAngleB || 0; // Use 3 equations: // gx = (xj - xi - l) * xhat = 0 // gy = (xj - xi - l) * yhat = 0 // gr = (xi - xj + r) * that = 0 // // ...where: // l is the localOffsetB vector rotated to world in bodyA frame // r is the same vector but reversed and rotated from bodyB frame // xhat, yhat are world axis vectors // that is the tangent of r // // For the first two constraints, we get // G*W = (vj - vi - ldot ) * xhat // = (vj - vi - wi x l) * xhat // // Since (wi x l) * xhat = (l x xhat) * wi, we get // G*W = [ -1 0 (-l x xhat) 1 0 0] * [vi wi vj wj] // // The last constraint gives // GW = (vi - vj + wj x r) * that // = [ that 0 -that (r x t) ] var x = new Equation(bodyA,bodyB,-maxForce,maxForce), y = new Equation(bodyA,bodyB,-maxForce,maxForce), rot = new Equation(bodyA,bodyB,-maxForce,maxForce); var l = vec2.create(), g = vec2.create(), that = this; x.computeGq = function(){ vec2.rotate(l, that.localOffsetB, bodyA.angle); vec2.sub(g, bodyB.position, bodyA.position); vec2.sub(g, g, l); return g[0]; }; y.computeGq = function(){ vec2.rotate(l, that.localOffsetB, bodyA.angle); vec2.sub(g, bodyB.position, bodyA.position); vec2.sub(g, g, l); return g[1]; }; var r = vec2.create(), t = vec2.create(); rot.computeGq = function(){ vec2.rotate(r, that.localOffsetB, bodyB.angle - that.localAngleB); vec2.scale(r,r,-1); vec2.sub(g,bodyA.position,bodyB.position); vec2.add(g,g,r); vec2.rotate(t,r,-Math.PI/2); vec2.normalize(t,t); return vec2.dot(g,t); }; /** * The offset of bodyB in bodyA's frame. * @property {Array} localOffsetB */ this.localOffsetB = vec2.create(); if(options.localOffsetB){ vec2.copy(this.localOffsetB, options.localOffsetB); } else { // Construct from current positions vec2.sub(this.localOffsetB, bodyB.position, bodyA.position); vec2.rotate(this.localOffsetB, this.localOffsetB, -bodyA.angle); } /** * The offset angle of bodyB in bodyA's frame. * @property {Number} localAngleB */ this.localAngleB = 0; if(typeof(options.localAngleB) === 'number'){ this.localAngleB = options.localAngleB; } else { // Construct this.localAngleB = bodyB.angle - bodyA.angle; } this.equations.push(x, y, rot); this.setMaxForce(maxForce); } LockConstraint.prototype = new Constraint(); /** * Set the maximum force to be applied. * @method setMaxForce * @param {Number} force */ LockConstraint.prototype.setMaxForce = function(force){ var eqs = this.equations; for(var i=0; ithis tutorial. * * @class PrismaticConstraint * @constructor * @extends Constraint * @author schteppe * @param {Body} bodyA * @param {Body} bodyB * @param {Object} [options] * @param {Number} [options.maxForce] Max force to be applied by the constraint * @param {Array} [options.localAnchorA] Body A's anchor point, defined in its own local frame. * @param {Array} [options.localAnchorB] Body B's anchor point, defined in its own local frame. * @param {Array} [options.localAxisA] An axis, defined in body A frame, that body B's anchor point may slide along. * @param {Boolean} [options.disableRotationalLock] If set to true, bodyB will be free to rotate around its anchor point. * @param {Number} [options.upperLimit] * @param {Number} [options.lowerLimit] * @todo Ability to create using only a point and a worldAxis */ function PrismaticConstraint(bodyA, bodyB, options){ options = options || {}; Constraint.call(this,bodyA,bodyB,Constraint.PRISMATIC,options); // Get anchors var localAnchorA = vec2.fromValues(0,0), localAxisA = vec2.fromValues(1,0), localAnchorB = vec2.fromValues(0,0); if(options.localAnchorA){ vec2.copy(localAnchorA, options.localAnchorA); } if(options.localAxisA){ vec2.copy(localAxisA, options.localAxisA); } if(options.localAnchorB){ vec2.copy(localAnchorB, options.localAnchorB); } /** * @property localAnchorA * @type {Array} */ this.localAnchorA = localAnchorA; /** * @property localAnchorB * @type {Array} */ this.localAnchorB = localAnchorB; /** * @property localAxisA * @type {Array} */ this.localAxisA = localAxisA; /* The constraint violation for the common axis point is g = ( xj + rj - xi - ri ) * t := gg*t where r are body-local anchor points, and t is a tangent to the constraint axis defined in body i frame. gdot = ( vj + wj x rj - vi - wi x ri ) * t + ( xj + rj - xi - ri ) * ( wi x t ) Note the use of the chain rule. Now we identify the jacobian G*W = [ -t -ri x t + t x gg t rj x t ] * [vi wi vj wj] The rotational part is just a rotation lock. */ var maxForce = this.maxForce = typeof(options.maxForce)!=="undefined" ? options.maxForce : Number.MAX_VALUE; // Translational part var trans = new Equation(bodyA,bodyB,-maxForce,maxForce); var ri = new vec2.create(), rj = new vec2.create(), gg = new vec2.create(), t = new vec2.create(); trans.computeGq = function(){ // g = ( xj + rj - xi - ri ) * t return vec2.dot(gg,t); }; trans.updateJacobian = function(){ var G = this.G, xi = bodyA.position, xj = bodyB.position; vec2.rotate(ri,localAnchorA,bodyA.angle); vec2.rotate(rj,localAnchorB,bodyB.angle); vec2.add(gg,xj,rj); vec2.sub(gg,gg,xi); vec2.sub(gg,gg,ri); vec2.rotate(t,localAxisA,bodyA.angle+Math.PI/2); G[0] = -t[0]; G[1] = -t[1]; G[2] = -vec2.crossLength(ri,t) + vec2.crossLength(t,gg); G[3] = t[0]; G[4] = t[1]; G[5] = vec2.crossLength(rj,t); }; this.equations.push(trans); // Rotational part if(!options.disableRotationalLock){ var rot = new RotationalLockEquation(bodyA,bodyB,-maxForce,maxForce); this.equations.push(rot); } /** * The position of anchor A relative to anchor B, along the constraint axis. * @property position * @type {Number} */ this.position = 0; // Is this one used at all? this.velocity = 0; /** * Set to true to enable lower limit. * @property lowerLimitEnabled * @type {Boolean} */ this.lowerLimitEnabled = typeof(options.lowerLimit)!=="undefined" ? true : false; /** * Set to true to enable upper limit. * @property upperLimitEnabled * @type {Boolean} */ this.upperLimitEnabled = typeof(options.upperLimit)!=="undefined" ? true : false; /** * Lower constraint limit. The constraint position is forced to be larger than this value. * @property lowerLimit * @type {Number} */ this.lowerLimit = typeof(options.lowerLimit)!=="undefined" ? options.lowerLimit : 0; /** * Upper constraint limit. The constraint position is forced to be smaller than this value. * @property upperLimit * @type {Number} */ this.upperLimit = typeof(options.upperLimit)!=="undefined" ? options.upperLimit : 1; // Equations used for limits this.upperLimitEquation = new ContactEquation(bodyA,bodyB); this.lowerLimitEquation = new ContactEquation(bodyA,bodyB); // Set max/min forces this.upperLimitEquation.minForce = this.lowerLimitEquation.minForce = 0; this.upperLimitEquation.maxForce = this.lowerLimitEquation.maxForce = maxForce; /** * Equation used for the motor. * @property motorEquation * @type {Equation} */ this.motorEquation = new Equation(bodyA,bodyB); /** * The current motor state. Enable or disable the motor using .enableMotor * @property motorEnabled * @type {Boolean} */ this.motorEnabled = false; /** * Set the target speed for the motor. * @property motorSpeed * @type {Number} */ this.motorSpeed = 0; var that = this; var motorEquation = this.motorEquation; var old = motorEquation.computeGW; motorEquation.computeGq = function(){ return 0; }; motorEquation.computeGW = function(){ var G = this.G, bi = this.bodyA, bj = this.bodyB, vi = bi.velocity, vj = bj.velocity, wi = bi.angularVelocity, wj = bj.angularVelocity; return this.gmult(G,vi,wi,vj,wj) + that.motorSpeed; }; } PrismaticConstraint.prototype = new Constraint(); var worldAxisA = vec2.create(), worldAnchorA = vec2.create(), worldAnchorB = vec2.create(), orientedAnchorA = vec2.create(), orientedAnchorB = vec2.create(), tmp = vec2.create(); /** * Update the constraint equations. Should be done if any of the bodies changed position, before solving. * @method update */ PrismaticConstraint.prototype.update = function(){ var eqs = this.equations, trans = eqs[0], upperLimit = this.upperLimit, lowerLimit = this.lowerLimit, upperLimitEquation = this.upperLimitEquation, lowerLimitEquation = this.lowerLimitEquation, bodyA = this.bodyA, bodyB = this.bodyB, localAxisA = this.localAxisA, localAnchorA = this.localAnchorA, localAnchorB = this.localAnchorB; trans.updateJacobian(); // Transform local things to world vec2.rotate(worldAxisA, localAxisA, bodyA.angle); vec2.rotate(orientedAnchorA, localAnchorA, bodyA.angle); vec2.add(worldAnchorA, orientedAnchorA, bodyA.position); vec2.rotate(orientedAnchorB, localAnchorB, bodyB.angle); vec2.add(worldAnchorB, orientedAnchorB, bodyB.position); var relPosition = this.position = vec2.dot(worldAnchorB,worldAxisA) - vec2.dot(worldAnchorA,worldAxisA); // Motor if(this.motorEnabled){ // G = [ a a x ri -a -a x rj ] var G = this.motorEquation.G; G[0] = worldAxisA[0]; G[1] = worldAxisA[1]; G[2] = vec2.crossLength(worldAxisA,orientedAnchorB); G[3] = -worldAxisA[0]; G[4] = -worldAxisA[1]; G[5] = -vec2.crossLength(worldAxisA,orientedAnchorA); } /* Limits strategy: Add contact equation, with normal along the constraint axis. min/maxForce is set so the constraint is repulsive in the correct direction. Some offset is added to either equation.contactPointA or .contactPointB to get the correct upper/lower limit. ^ | upperLimit x | ------ anchorB x<---| B | | | | ------ | ------ | | | | A |-->x anchorA ------ | x lowerLimit | axis */ if(this.upperLimitEnabled && relPosition > upperLimit){ // Update contact constraint normal, etc vec2.scale(upperLimitEquation.normalA, worldAxisA, -1); vec2.sub(upperLimitEquation.contactPointA, worldAnchorA, bodyA.position); vec2.sub(upperLimitEquation.contactPointB, worldAnchorB, bodyB.position); vec2.scale(tmp,worldAxisA,upperLimit); vec2.add(upperLimitEquation.contactPointA,upperLimitEquation.contactPointA,tmp); if(eqs.indexOf(upperLimitEquation) === -1){ eqs.push(upperLimitEquation); } } else { var idx = eqs.indexOf(upperLimitEquation); if(idx !== -1){ eqs.splice(idx,1); } } if(this.lowerLimitEnabled && relPosition < lowerLimit){ // Update contact constraint normal, etc vec2.scale(lowerLimitEquation.normalA, worldAxisA, 1); vec2.sub(lowerLimitEquation.contactPointA, worldAnchorA, bodyA.position); vec2.sub(lowerLimitEquation.contactPointB, worldAnchorB, bodyB.position); vec2.scale(tmp,worldAxisA,lowerLimit); vec2.sub(lowerLimitEquation.contactPointB,lowerLimitEquation.contactPointB,tmp); if(eqs.indexOf(lowerLimitEquation) === -1){ eqs.push(lowerLimitEquation); } } else { var idx = eqs.indexOf(lowerLimitEquation); if(idx !== -1){ eqs.splice(idx,1); } } }; /** * Enable the motor * @method enableMotor */ PrismaticConstraint.prototype.enableMotor = function(){ if(this.motorEnabled){ return; } this.equations.push(this.motorEquation); this.motorEnabled = true; }; /** * Disable the rotational motor * @method disableMotor */ PrismaticConstraint.prototype.disableMotor = function(){ if(!this.motorEnabled){ return; } var i = this.equations.indexOf(this.motorEquation); this.equations.splice(i,1); this.motorEnabled = false; }; /** * Set the constraint limits. * @method setLimits * @param {number} lower Lower limit. * @param {number} upper Upper limit. */ PrismaticConstraint.prototype.setLimits = function (lower, upper) { if(typeof(lower) === 'number'){ this.lowerLimit = lower; this.lowerLimitEnabled = true; } else { this.lowerLimit = lower; this.lowerLimitEnabled = false; } if(typeof(upper) === 'number'){ this.upperLimit = upper; this.upperLimitEnabled = true; } else { this.upperLimit = upper; this.upperLimitEnabled = false; } }; },{"../equations/ContactEquation":22,"../equations/Equation":23,"../equations/RotationalLockEquation":25,"../math/vec2":31,"./Constraint":15,"__browserify_Buffer":1,"__browserify_process":2}],20:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/constraints\\RevoluteConstraint.js",__dirname="/constraints";var Constraint = require('./Constraint') , Equation = require('../equations/Equation') , RotationalVelocityEquation = require('../equations/RotationalVelocityEquation') , RotationalLockEquation = require('../equations/RotationalLockEquation') , vec2 = require('../math/vec2'); module.exports = RevoluteConstraint; var worldPivotA = vec2.create(), worldPivotB = vec2.create(), xAxis = vec2.fromValues(1,0), yAxis = vec2.fromValues(0,1), g = vec2.create(); /** * Connects two bodies at given offset points, letting them rotate relative to each other around this point. * @class RevoluteConstraint * @constructor * @author schteppe * @param {Body} bodyA * @param {Body} bodyB * @param {Object} [options] * @param {Array} [options.worldPivot] A pivot point given in world coordinates. If specified, localPivotA and localPivotB are automatically computed from this value. * @param {Array} [options.localPivotA] The point relative to the center of mass of bodyA which bodyA is constrained to. * @param {Array} [options.localPivotB] See localPivotA. * @param {Number} [options.maxForce] The maximum force that should be applied to constrain the bodies. * @extends Constraint * * @example * // This will create a revolute constraint between two bodies with pivot point in between them. * var bodyA = new Body({ mass: 1, position: [-1, 0] }); * var bodyB = new Body({ mass: 1, position: [1, 0] }); * var constraint = new RevoluteConstraint(bodyA, bodyB, { * worldPivot: [0, 0] * }); * world.addConstraint(constraint); * * // Using body-local pivot points, the constraint could have been constructed like this: * var constraint = new RevoluteConstraint(bodyA, bodyB, { * localPivotA: [1, 0], * localPivotB: [-1, 0] * }); */ function RevoluteConstraint(bodyA, bodyB, options){ options = options || {}; Constraint.call(this,bodyA,bodyB,Constraint.REVOLUTE,options); var maxForce = this.maxForce = typeof(options.maxForce) !== "undefined" ? options.maxForce : Number.MAX_VALUE; /** * @property {Array} pivotA */ this.pivotA = vec2.create(); /** * @property {Array} pivotB */ this.pivotB = vec2.create(); if(options.worldPivot){ // Compute pivotA and pivotB vec2.sub(this.pivotA, options.worldPivot, bodyA.position); vec2.sub(this.pivotB, options.worldPivot, bodyB.position); // Rotate to local coordinate system vec2.rotate(this.pivotA, this.pivotA, -bodyA.angle); vec2.rotate(this.pivotB, this.pivotB, -bodyB.angle); } else { // Get pivotA and pivotB vec2.copy(this.pivotA, options.localPivotA); vec2.copy(this.pivotB, options.localPivotB); } // Equations to be fed to the solver var eqs = this.equations = [ new Equation(bodyA,bodyB,-maxForce,maxForce), new Equation(bodyA,bodyB,-maxForce,maxForce), ]; var x = eqs[0]; var y = eqs[1]; var that = this; x.computeGq = function(){ vec2.rotate(worldPivotA, that.pivotA, bodyA.angle); vec2.rotate(worldPivotB, that.pivotB, bodyB.angle); vec2.add(g, bodyB.position, worldPivotB); vec2.sub(g, g, bodyA.position); vec2.sub(g, g, worldPivotA); return vec2.dot(g,xAxis); }; y.computeGq = function(){ vec2.rotate(worldPivotA, that.pivotA, bodyA.angle); vec2.rotate(worldPivotB, that.pivotB, bodyB.angle); vec2.add(g, bodyB.position, worldPivotB); vec2.sub(g, g, bodyA.position); vec2.sub(g, g, worldPivotA); return vec2.dot(g,yAxis); }; y.minForce = x.minForce = -maxForce; y.maxForce = x.maxForce = maxForce; this.motorEquation = new RotationalVelocityEquation(bodyA,bodyB); /** * Indicates whether the motor is enabled. Use .enableMotor() to enable the constraint motor. * @property {Boolean} motorEnabled * @readOnly */ this.motorEnabled = false; /** * The constraint position. * @property angle * @type {Number} * @readOnly */ this.angle = 0; /** * Set to true to enable lower limit * @property lowerLimitEnabled * @type {Boolean} */ this.lowerLimitEnabled = false; /** * Set to true to enable upper limit * @property upperLimitEnabled * @type {Boolean} */ this.upperLimitEnabled = false; /** * The lower limit on the constraint angle. * @property lowerLimit * @type {Boolean} */ this.lowerLimit = 0; /** * The upper limit on the constraint angle. * @property upperLimit * @type {Boolean} */ this.upperLimit = 0; this.upperLimitEquation = new RotationalLockEquation(bodyA,bodyB); this.lowerLimitEquation = new RotationalLockEquation(bodyA,bodyB); this.upperLimitEquation.minForce = 0; this.lowerLimitEquation.maxForce = 0; } RevoluteConstraint.prototype = new Constraint(); /** * Set the constraint angle limits. * @method setLimits * @param {number} lower Lower angle limit. * @param {number} upper Upper angle limit. */ RevoluteConstraint.prototype.setLimits = function (lower, upper) { if(typeof(lower) === 'number'){ this.lowerLimit = lower; this.lowerLimitEnabled = true; } else { this.lowerLimit = lower; this.lowerLimitEnabled = false; } if(typeof(upper) === 'number'){ this.upperLimit = upper; this.upperLimitEnabled = true; } else { this.upperLimit = upper; this.upperLimitEnabled = false; } }; RevoluteConstraint.prototype.update = function(){ var bodyA = this.bodyA, bodyB = this.bodyB, pivotA = this.pivotA, pivotB = this.pivotB, eqs = this.equations, normal = eqs[0], tangent= eqs[1], x = eqs[0], y = eqs[1], upperLimit = this.upperLimit, lowerLimit = this.lowerLimit, upperLimitEquation = this.upperLimitEquation, lowerLimitEquation = this.lowerLimitEquation; var relAngle = this.angle = bodyB.angle - bodyA.angle; if(this.upperLimitEnabled && relAngle > upperLimit){ upperLimitEquation.angle = upperLimit; if(eqs.indexOf(upperLimitEquation) === -1){ eqs.push(upperLimitEquation); } } else { var idx = eqs.indexOf(upperLimitEquation); if(idx !== -1){ eqs.splice(idx,1); } } if(this.lowerLimitEnabled && relAngle < lowerLimit){ lowerLimitEquation.angle = lowerLimit; if(eqs.indexOf(lowerLimitEquation) === -1){ eqs.push(lowerLimitEquation); } } else { var idx = eqs.indexOf(lowerLimitEquation); if(idx !== -1){ eqs.splice(idx,1); } } /* The constraint violation is g = xj + rj - xi - ri ...where xi and xj are the body positions and ri and rj world-oriented offset vectors. Differentiate: gdot = vj + wj x rj - vi - wi x ri We split this into x and y directions. (let x and y be unit vectors along the respective axes) gdot * x = ( vj + wj x rj - vi - wi x ri ) * x = ( vj*x + (wj x rj)*x -vi*x -(wi x ri)*x = ( vj*x + (rj x x)*wj -vi*x -(ri x x)*wi = [ -x -(ri x x) x (rj x x)] * [vi wi vj wj] = G*W ...and similar for y. We have then identified the jacobian entries for x and y directions: Gx = [ x (rj x x) -x -(ri x x)] Gy = [ y (rj x y) -y -(ri x y)] */ vec2.rotate(worldPivotA, pivotA, bodyA.angle); vec2.rotate(worldPivotB, pivotB, bodyB.angle); // todo: these are a bit sparse. We could save some computations on making custom eq.computeGW functions, etc x.G[0] = -1; x.G[1] = 0; x.G[2] = -vec2.crossLength(worldPivotA,xAxis); x.G[3] = 1; x.G[4] = 0; x.G[5] = vec2.crossLength(worldPivotB,xAxis); y.G[0] = 0; y.G[1] = -1; y.G[2] = -vec2.crossLength(worldPivotA,yAxis); y.G[3] = 0; y.G[4] = 1; y.G[5] = vec2.crossLength(worldPivotB,yAxis); }; /** * Enable the rotational motor * @method enableMotor */ RevoluteConstraint.prototype.enableMotor = function(){ if(this.motorEnabled){ return; } this.equations.push(this.motorEquation); this.motorEnabled = true; }; /** * Disable the rotational motor * @method disableMotor */ RevoluteConstraint.prototype.disableMotor = function(){ if(!this.motorEnabled){ return; } var i = this.equations.indexOf(this.motorEquation); this.equations.splice(i,1); this.motorEnabled = false; }; /** * Check if the motor is enabled. * @method motorIsEnabled * @deprecated use property motorEnabled instead. * @return {Boolean} */ RevoluteConstraint.prototype.motorIsEnabled = function(){ return !!this.motorEnabled; }; /** * Set the speed of the rotational constraint motor * @method setMotorSpeed * @param {Number} speed */ RevoluteConstraint.prototype.setMotorSpeed = function(speed){ if(!this.motorEnabled){ return; } var i = this.equations.indexOf(this.motorEquation); this.equations[i].relativeVelocity = speed; }; /** * Get the speed of the rotational constraint motor * @method getMotorSpeed * @return {Number} The current speed, or false if the motor is not enabled. */ RevoluteConstraint.prototype.getMotorSpeed = function(){ if(!this.motorEnabled){ return false; } return this.motorEquation.relativeVelocity; }; },{"../equations/Equation":23,"../equations/RotationalLockEquation":25,"../equations/RotationalVelocityEquation":26,"../math/vec2":31,"./Constraint":15,"__browserify_Buffer":1,"__browserify_process":2}],21:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/equations\\AngleLockEquation.js",__dirname="/equations";var Equation = require("./Equation"), vec2 = require('../math/vec2'); module.exports = AngleLockEquation; /** * Locks the relative angle between two bodies. The constraint tries to keep the dot product between two vectors, local in each body, to zero. The local angle in body i is a parameter. * * @class AngleLockEquation * @constructor * @extends Equation * @param {Body} bodyA * @param {Body} bodyB * @param {Object} [options] * @param {Number} [options.angle] Angle to add to the local vector in body A. * @param {Number} [options.ratio] Gear ratio */ function AngleLockEquation(bodyA, bodyB, options){ options = options || {}; Equation.call(this,bodyA,bodyB,-Number.MAX_VALUE,Number.MAX_VALUE); this.angle = options.angle || 0; /** * The gear ratio. * @property {Number} ratio * @private * @see setRatio */ this.ratio = typeof(options.ratio)==="number" ? options.ratio : 1; this.setRatio(this.ratio); } AngleLockEquation.prototype = new Equation(); AngleLockEquation.prototype.constructor = AngleLockEquation; AngleLockEquation.prototype.computeGq = function(){ return this.ratio * this.bodyA.angle - this.bodyB.angle + this.angle; }; /** * Set the gear ratio for this equation * @method setRatio * @param {Number} ratio */ AngleLockEquation.prototype.setRatio = function(ratio){ var G = this.G; G[2] = ratio; G[5] = -1; this.ratio = ratio; }; /** * Set the max force for the equation. * @method setMaxTorque * @param {Number} torque */ AngleLockEquation.prototype.setMaxTorque = function(torque){ this.maxForce = torque; this.minForce = -torque; }; },{"../math/vec2":31,"./Equation":23,"__browserify_Buffer":1,"__browserify_process":2}],22:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/equations\\ContactEquation.js",__dirname="/equations";var Equation = require("./Equation"), vec2 = require('../math/vec2'); module.exports = ContactEquation; /** * Non-penetration constraint equation. Tries to make the contactPointA and contactPointB vectors coincide, while keeping the applied force repulsive. * * @class ContactEquation * @constructor * @extends Equation * @param {Body} bodyA * @param {Body} bodyB */ function ContactEquation(bodyA, bodyB){ Equation.call(this, bodyA, bodyB, 0, Number.MAX_VALUE); /** * Vector from body i center of mass to the contact point. * @property contactPointA * @type {Array} */ this.contactPointA = vec2.create(); this.penetrationVec = vec2.create(); /** * World-oriented vector from body A center of mass to the contact point. * @property contactPointB * @type {Array} */ this.contactPointB = vec2.create(); /** * The normal vector, pointing out of body i * @property normalA * @type {Array} */ this.normalA = vec2.create(); /** * The restitution to use (0=no bounciness, 1=max bounciness). * @property restitution * @type {Number} */ this.restitution = 0; /** * This property is set to true if this is the first impact between the bodies (not persistant contact). * @property firstImpact * @type {Boolean} * @readOnly */ this.firstImpact = false; /** * The shape in body i that triggered this contact. * @property shapeA * @type {Shape} */ this.shapeA = null; /** * The shape in body j that triggered this contact. * @property shapeB * @type {Shape} */ this.shapeB = null; } ContactEquation.prototype = new Equation(); ContactEquation.prototype.constructor = ContactEquation; ContactEquation.prototype.computeB = function(a,b,h){ var bi = this.bodyA, bj = this.bodyB, ri = this.contactPointA, rj = this.contactPointB, xi = bi.position, xj = bj.position; var penetrationVec = this.penetrationVec, n = this.normalA, G = this.G; // Caluclate cross products var rixn = vec2.crossLength(ri,n), rjxn = vec2.crossLength(rj,n); // G = [-n -rixn n rjxn] G[0] = -n[0]; G[1] = -n[1]; G[2] = -rixn; G[3] = n[0]; G[4] = n[1]; G[5] = rjxn; // Calculate q = xj+rj -(xi+ri) i.e. the penetration vector vec2.add(penetrationVec,xj,rj); vec2.sub(penetrationVec,penetrationVec,xi); vec2.sub(penetrationVec,penetrationVec,ri); // Compute iteration var GW, Gq; if(this.firstImpact && this.restitution !== 0){ Gq = 0; GW = (1/b)*(1+this.restitution) * this.computeGW(); } else { Gq = vec2.dot(n,penetrationVec) + this.offset; GW = this.computeGW(); } var GiMf = this.computeGiMf(); var B = - Gq * a - GW * b - h*GiMf; return B; }; },{"../math/vec2":31,"./Equation":23,"__browserify_Buffer":1,"__browserify_process":2}],23:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/equations\\Equation.js",__dirname="/equations";module.exports = Equation; var vec2 = require('../math/vec2'), Utils = require('../utils/Utils'), Body = require('../objects/Body'); /** * Base class for constraint equations. * @class Equation * @constructor * @param {Body} bodyA First body participating in the equation * @param {Body} bodyB Second body participating in the equation * @param {number} minForce Minimum force to apply. Default: -Number.MAX_VALUE * @param {number} maxForce Maximum force to apply. Default: Number.MAX_VALUE */ function Equation(bodyA, bodyB, minForce, maxForce){ /** * Minimum force to apply when solving. * @property minForce * @type {Number} */ this.minForce = typeof(minForce)==="undefined" ? -Number.MAX_VALUE : minForce; /** * Max force to apply when solving. * @property maxForce * @type {Number} */ this.maxForce = typeof(maxForce)==="undefined" ? Number.MAX_VALUE : maxForce; /** * First body participating in the constraint * @property bodyA * @type {Body} */ this.bodyA = bodyA; /** * Second body participating in the constraint * @property bodyB * @type {Body} */ this.bodyB = bodyB; /** * The stiffness of this equation. Typically chosen to a large number (~1e7), but can be chosen somewhat freely to get a stable simulation. * @property stiffness * @type {Number} */ this.stiffness = Equation.DEFAULT_STIFFNESS; /** * The number of time steps needed to stabilize the constraint equation. Typically between 3 and 5 time steps. * @property relaxation * @type {Number} */ this.relaxation = Equation.DEFAULT_RELAXATION; /** * The Jacobian entry of this equation. 6 numbers, 3 per body (x,y,angle). * @property G * @type {Array} */ this.G = new Utils.ARRAY_TYPE(6); for(var i=0; i<6; i++){ this.G[i]=0; } this.offset = 0; this.a = 0; this.b = 0; this.epsilon = 0; this.timeStep = 1/60; /** * Indicates if stiffness or relaxation was changed. * @property {Boolean} needsUpdate */ this.needsUpdate = true; /** * The resulting constraint multiplier from the last solve. This is mostly equivalent to the force produced by the constraint. * @property multiplier * @type {Number} */ this.multiplier = 0; /** * Relative velocity. * @property {Number} relativeVelocity */ this.relativeVelocity = 0; /** * Whether this equation is enabled or not. If true, it will be added to the solver. * @property {Boolean} enabled */ this.enabled = true; } Equation.prototype.constructor = Equation; /** * The default stiffness when creating a new Equation. * @static * @property {Number} DEFAULT_STIFFNESS * @default 1e6 */ Equation.DEFAULT_STIFFNESS = 1e6; /** * The default relaxation when creating a new Equation. * @static * @property {Number} DEFAULT_RELAXATION * @default 4 */ Equation.DEFAULT_RELAXATION = 4; /** * Compute SPOOK parameters .a, .b and .epsilon according to the current parameters. See equations 9, 10 and 11 in the SPOOK notes. * @method update */ Equation.prototype.update = function(){ var k = this.stiffness, d = this.relaxation, h = this.timeStep; this.a = 4.0 / (h * (1 + 4 * d)); this.b = (4.0 * d) / (1 + 4 * d); this.epsilon = 4.0 / (h * h * k * (1 + 4 * d)); this.needsUpdate = false; }; /** * Multiply a jacobian entry with corresponding positions or velocities * @method gmult * @return {Number} */ Equation.prototype.gmult = function(G,vi,wi,vj,wj){ return G[0] * vi[0] + G[1] * vi[1] + G[2] * wi + G[3] * vj[0] + G[4] * vj[1] + G[5] * wj; }; /** * Computes the RHS of the SPOOK equation * @method computeB * @return {Number} */ Equation.prototype.computeB = function(a,b,h){ var GW = this.computeGW(); var Gq = this.computeGq(); var GiMf = this.computeGiMf(); return - Gq * a - GW * b - GiMf*h; }; /** * Computes G\*q, where q are the generalized body coordinates * @method computeGq * @return {Number} */ var qi = vec2.create(), qj = vec2.create(); Equation.prototype.computeGq = function(){ var G = this.G, bi = this.bodyA, bj = this.bodyB, xi = bi.position, xj = bj.position, ai = bi.angle, aj = bj.angle; return this.gmult(G, qi, ai, qj, aj) + this.offset; }; /** * Computes G\*W, where W are the body velocities * @method computeGW * @return {Number} */ Equation.prototype.computeGW = function(){ var G = this.G, bi = this.bodyA, bj = this.bodyB, vi = bi.velocity, vj = bj.velocity, wi = bi.angularVelocity, wj = bj.angularVelocity; return this.gmult(G,vi,wi,vj,wj) + this.relativeVelocity; }; /** * Computes G\*Wlambda, where W are the body velocities * @method computeGWlambda * @return {Number} */ Equation.prototype.computeGWlambda = function(){ var G = this.G, bi = this.bodyA, bj = this.bodyB, vi = bi.vlambda, vj = bj.vlambda, wi = bi.wlambda, wj = bj.wlambda; return this.gmult(G,vi,wi,vj,wj); }; /** * Computes G\*inv(M)\*f, where M is the mass matrix with diagonal blocks for each body, and f are the forces on the bodies. * @method computeGiMf * @return {Number} */ var iMfi = vec2.create(), iMfj = vec2.create(); Equation.prototype.computeGiMf = function(){ var bi = this.bodyA, bj = this.bodyB, fi = bi.force, ti = bi.angularForce, fj = bj.force, tj = bj.angularForce, invMassi = bi.invMassSolve, invMassj = bj.invMassSolve, invIi = bi.invInertiaSolve, invIj = bj.invInertiaSolve, G = this.G; vec2.scale(iMfi, fi,invMassi); vec2.scale(iMfj, fj,invMassj); return this.gmult(G,iMfi,ti*invIi,iMfj,tj*invIj); }; /** * Computes G\*inv(M)\*G' * @method computeGiMGt * @return {Number} */ Equation.prototype.computeGiMGt = function(){ var bi = this.bodyA, bj = this.bodyB, invMassi = bi.invMassSolve, invMassj = bj.invMassSolve, invIi = bi.invInertiaSolve, invIj = bj.invInertiaSolve, G = this.G; return G[0] * G[0] * invMassi + G[1] * G[1] * invMassi + G[2] * G[2] * invIi + G[3] * G[3] * invMassj + G[4] * G[4] * invMassj + G[5] * G[5] * invIj; }; var addToWlambda_temp = vec2.create(), addToWlambda_Gi = vec2.create(), addToWlambda_Gj = vec2.create(), addToWlambda_ri = vec2.create(), addToWlambda_rj = vec2.create(), addToWlambda_Mdiag = vec2.create(); /** * Add constraint velocity to the bodies. * @method addToWlambda * @param {Number} deltalambda */ Equation.prototype.addToWlambda = function(deltalambda){ var bi = this.bodyA, bj = this.bodyB, temp = addToWlambda_temp, Gi = addToWlambda_Gi, Gj = addToWlambda_Gj, ri = addToWlambda_ri, rj = addToWlambda_rj, invMassi = bi.invMassSolve, invMassj = bj.invMassSolve, invIi = bi.invInertiaSolve, invIj = bj.invInertiaSolve, Mdiag = addToWlambda_Mdiag, G = this.G; Gi[0] = G[0]; Gi[1] = G[1]; Gj[0] = G[3]; Gj[1] = G[4]; // Add to linear velocity // v_lambda += inv(M) * delta_lamba * G vec2.scale(temp, Gi, invMassi*deltalambda); vec2.add( bi.vlambda, bi.vlambda, temp); // This impulse is in the offset frame // Also add contribution to angular //bi.wlambda -= vec2.crossLength(temp,ri); bi.wlambda += invIi * G[2] * deltalambda; vec2.scale(temp, Gj, invMassj*deltalambda); vec2.add( bj.vlambda, bj.vlambda, temp); //bj.wlambda -= vec2.crossLength(temp,rj); bj.wlambda += invIj * G[5] * deltalambda; }; /** * Compute the denominator part of the SPOOK equation: C = G\*inv(M)\*G' + eps * @method computeInvC * @param {Number} eps * @return {Number} */ Equation.prototype.computeInvC = function(eps){ return 1.0 / (this.computeGiMGt() + eps); }; },{"../math/vec2":31,"../objects/Body":32,"../utils/Utils":50,"__browserify_Buffer":1,"__browserify_process":2}],24:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/equations\\FrictionEquation.js",__dirname="/equations";var vec2 = require('../math/vec2') , Equation = require('./Equation') , Utils = require('../utils/Utils'); module.exports = FrictionEquation; /** * Constrains the slipping in a contact along a tangent * * @class FrictionEquation * @constructor * @param {Body} bodyA * @param {Body} bodyB * @param {Number} slipForce * @extends Equation */ function FrictionEquation(bodyA, bodyB, slipForce){ Equation.call(this, bodyA, bodyB, -slipForce, slipForce); /** * Relative vector from center of body A to the contact point, world oriented. * @property contactPointA * @type {Array} */ this.contactPointA = vec2.create(); /** * Relative vector from center of body B to the contact point, world oriented. * @property contactPointB * @type {Array} */ this.contactPointB = vec2.create(); /** * Tangent vector that the friction force will act along. World oriented. * @property t * @type {Array} */ this.t = vec2.create(); /** * A ContactEquation connected to this friction. The contact equations can be used to rescale the max force for the friction. If more than one contact equation is given, then the max force can be set to the average. * @property contactEquations * @type {ContactEquation} */ this.contactEquations = []; /** * The shape in body i that triggered this friction. * @property shapeA * @type {Shape} * @todo Needed? The shape can be looked up via contactEquation.shapeA... */ this.shapeA = null; /** * The shape in body j that triggered this friction. * @property shapeB * @type {Shape} * @todo Needed? The shape can be looked up via contactEquation.shapeB... */ this.shapeB = null; /** * The friction coefficient to use. * @property frictionCoefficient * @type {Number} */ this.frictionCoefficient = 0.3; } FrictionEquation.prototype = new Equation(); FrictionEquation.prototype.constructor = FrictionEquation; /** * Set the slipping condition for the constraint. The friction force cannot be * larger than this value. * @method setSlipForce * @param {Number} slipForce */ FrictionEquation.prototype.setSlipForce = function(slipForce){ this.maxForce = slipForce; this.minForce = -slipForce; }; /** * Get the max force for the constraint. * @method getSlipForce * @return {Number} */ FrictionEquation.prototype.getSlipForce = function(){ return this.maxForce; }; FrictionEquation.prototype.computeB = function(a,b,h){ var bi = this.bodyA, bj = this.bodyB, ri = this.contactPointA, rj = this.contactPointB, t = this.t, G = this.G; // G = [-t -rixt t rjxt] // And remember, this is a pure velocity constraint, g is always zero! G[0] = -t[0]; G[1] = -t[1]; G[2] = -vec2.crossLength(ri,t); G[3] = t[0]; G[4] = t[1]; G[5] = vec2.crossLength(rj,t); var GW = this.computeGW(), GiMf = this.computeGiMf(); var B = /* - g * a */ - GW * b - h*GiMf; return B; }; },{"../math/vec2":31,"../utils/Utils":50,"./Equation":23,"__browserify_Buffer":1,"__browserify_process":2}],25:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/equations\\RotationalLockEquation.js",__dirname="/equations";var Equation = require("./Equation"), vec2 = require('../math/vec2'); module.exports = RotationalLockEquation; /** * Locks the relative angle between two bodies. The constraint tries to keep the dot product between two vectors, local in each body, to zero. The local angle in body i is a parameter. * * @class RotationalLockEquation * @constructor * @extends Equation * @param {Body} bodyA * @param {Body} bodyB * @param {Object} [options] * @param {Number} [options.angle] Angle to add to the local vector in bodyA. */ function RotationalLockEquation(bodyA, bodyB, options){ options = options || {}; Equation.call(this, bodyA, bodyB, -Number.MAX_VALUE, Number.MAX_VALUE); /** * @property {number} angle */ this.angle = options.angle || 0; var G = this.G; G[2] = 1; G[5] = -1; } RotationalLockEquation.prototype = new Equation(); RotationalLockEquation.prototype.constructor = RotationalLockEquation; var worldVectorA = vec2.create(), worldVectorB = vec2.create(), xAxis = vec2.fromValues(1,0), yAxis = vec2.fromValues(0,1); RotationalLockEquation.prototype.computeGq = function(){ vec2.rotate(worldVectorA,xAxis,this.bodyA.angle+this.angle); vec2.rotate(worldVectorB,yAxis,this.bodyB.angle); return vec2.dot(worldVectorA,worldVectorB); }; },{"../math/vec2":31,"./Equation":23,"__browserify_Buffer":1,"__browserify_process":2}],26:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/equations\\RotationalVelocityEquation.js",__dirname="/equations";var Equation = require("./Equation"), vec2 = require('../math/vec2'); module.exports = RotationalVelocityEquation; /** * Syncs rotational velocity of two bodies, or sets a relative velocity (motor). * * @class RotationalVelocityEquation * @constructor * @extends Equation * @param {Body} bodyA * @param {Body} bodyB */ function RotationalVelocityEquation(bodyA, bodyB){ Equation.call(this, bodyA, bodyB, -Number.MAX_VALUE, Number.MAX_VALUE); this.relativeVelocity = 1; this.ratio = 1; } RotationalVelocityEquation.prototype = new Equation(); RotationalVelocityEquation.prototype.constructor = RotationalVelocityEquation; RotationalVelocityEquation.prototype.computeB = function(a,b,h){ var G = this.G; G[2] = -1; G[5] = this.ratio; var GiMf = this.computeGiMf(); var GW = this.computeGW(); var B = - GW * b - h*GiMf; return B; }; },{"../math/vec2":31,"./Equation":23,"__browserify_Buffer":1,"__browserify_process":2}],27:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/events\\EventEmitter.js",__dirname="/events";/** * Base class for objects that dispatches events. * @class EventEmitter * @constructor */ var EventEmitter = function () {}; module.exports = EventEmitter; EventEmitter.prototype = { constructor: EventEmitter, /** * Add an event listener * @method on * @param {String} type * @param {Function} listener * @return {EventEmitter} The self object, for chainability. */ on: function ( type, listener, context ) { listener.context = context || this; if ( this._listeners === undefined ){ this._listeners = {}; } var listeners = this._listeners; if ( listeners[ type ] === undefined ) { listeners[ type ] = []; } if ( listeners[ type ].indexOf( listener ) === - 1 ) { listeners[ type ].push( listener ); } return this; }, /** * Check if an event listener is added * @method has * @param {String} type * @param {Function} listener * @return {Boolean} */ has: function ( type, listener ) { if ( this._listeners === undefined ){ return false; } var listeners = this._listeners; if(listener){ if ( listeners[ type ] !== undefined && listeners[ type ].indexOf( listener ) !== - 1 ) { return true; } } else { if ( listeners[ type ] !== undefined ) { return true; } } return false; }, /** * Remove an event listener * @method off * @param {String} type * @param {Function} listener * @return {EventEmitter} The self object, for chainability. */ off: function ( type, listener ) { if ( this._listeners === undefined ){ return this; } var listeners = this._listeners; var index = listeners[ type ].indexOf( listener ); if ( index !== - 1 ) { listeners[ type ].splice( index, 1 ); } return this; }, /** * Emit an event. * @method emit * @param {Object} event * @param {String} event.type * @return {EventEmitter} The self object, for chainability. */ emit: function ( event ) { if ( this._listeners === undefined ){ return this; } var listeners = this._listeners; var listenerArray = listeners[ event.type ]; if ( listenerArray !== undefined ) { event.target = this; for ( var i = 0, l = listenerArray.length; i < l; i ++ ) { var listener = listenerArray[ i ]; listener.call( listener.context, event ); } } return this; } }; },{"__browserify_Buffer":1,"__browserify_process":2}],28:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/material\\ContactMaterial.js",__dirname="/material";var Material = require('./Material'); var Equation = require('../equations/Equation'); module.exports = ContactMaterial; /** * Defines what happens when two materials meet, such as what friction coefficient to use. You can also set other things such as restitution, surface velocity and constraint parameters. * @class ContactMaterial * @constructor * @param {Material} materialA * @param {Material} materialB * @param {Object} [options] * @param {Number} [options.friction=0.3] Friction coefficient. * @param {Number} [options.restitution=0] Restitution coefficient aka "bounciness". * @param {Number} [options.stiffness] ContactEquation stiffness. * @param {Number} [options.relaxation] ContactEquation relaxation. * @param {Number} [options.frictionStiffness] FrictionEquation stiffness. * @param {Number} [options.frictionRelaxation] FrictionEquation relaxation. * @param {Number} [options.surfaceVelocity=0] Surface velocity. * @author schteppe */ function ContactMaterial(materialA, materialB, options){ options = options || {}; if(!(materialA instanceof Material) || !(materialB instanceof Material)){ throw new Error("First two arguments must be Material instances."); } /** * The contact material identifier * @property id * @type {Number} */ this.id = ContactMaterial.idCounter++; /** * First material participating in the contact material * @property materialA * @type {Material} */ this.materialA = materialA; /** * Second material participating in the contact material * @property materialB * @type {Material} */ this.materialB = materialB; /** * Friction to use in the contact of these two materials * @property friction * @type {Number} */ this.friction = typeof(options.friction) !== "undefined" ? Number(options.friction) : 0.3; /** * Restitution to use in the contact of these two materials * @property restitution * @type {Number} */ this.restitution = typeof(options.restitution) !== "undefined" ? Number(options.restitution) : 0.0; /** * Stiffness of the resulting ContactEquation that this ContactMaterial generate * @property stiffness * @type {Number} */ this.stiffness = typeof(options.stiffness) !== "undefined" ? Number(options.stiffness) : Equation.DEFAULT_STIFFNESS; /** * Relaxation of the resulting ContactEquation that this ContactMaterial generate * @property relaxation * @type {Number} */ this.relaxation = typeof(options.relaxation) !== "undefined" ? Number(options.relaxation) : Equation.DEFAULT_RELAXATION; /** * Stiffness of the resulting FrictionEquation that this ContactMaterial generate * @property frictionStiffness * @type {Number} */ this.frictionStiffness = typeof(options.frictionStiffness) !== "undefined" ? Number(options.frictionStiffness) : Equation.DEFAULT_STIFFNESS; /** * Relaxation of the resulting FrictionEquation that this ContactMaterial generate * @property frictionRelaxation * @type {Number} */ this.frictionRelaxation = typeof(options.frictionRelaxation) !== "undefined" ? Number(options.frictionRelaxation) : Equation.DEFAULT_RELAXATION; /** * Will add surface velocity to this material. If bodyA rests on top if bodyB, and the surface velocity is positive, bodyA will slide to the right. * @property {Number} surfaceVelocity */ this.surfaceVelocity = typeof(options.surfaceVelocity) !== "undefined" ? Number(options.surfaceVelocity) : 0; /** * Offset to be set on ContactEquations. A positive value will make the bodies penetrate more into each other. Can be useful in scenes where contacts need to be more persistent, for example when stacking. Aka "cure for nervous contacts". * @property contactSkinSize * @type {Number} */ this.contactSkinSize = 0.005; } ContactMaterial.idCounter = 0; },{"../equations/Equation":23,"./Material":29,"__browserify_Buffer":1,"__browserify_process":2}],29:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/material\\Material.js",__dirname="/material";module.exports = Material; /** * Defines a physics material. * @class Material * @constructor * @param {number} id Material identifier * @author schteppe */ function Material(id){ /** * The material identifier * @property id * @type {Number} */ this.id = id || Material.idCounter++; } Material.idCounter = 0; },{"__browserify_Buffer":1,"__browserify_process":2}],30:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/math\\polyk.js",__dirname="/math"; /* PolyK library url: http://polyk.ivank.net Released under MIT licence. Copyright (c) 2012 Ivan Kuckir Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ var PolyK = {}; /* Is Polygon self-intersecting? O(n^2) */ /* PolyK.IsSimple = function(p) { var n = p.length>>1; if(n<4) return true; var a1 = new PolyK._P(), a2 = new PolyK._P(); var b1 = new PolyK._P(), b2 = new PolyK._P(); var c = new PolyK._P(); for(var i=0; i>1; if(n<3) return []; var tgs = []; var avl = []; for(var i=0; i 3) { var i0 = avl[(i+0)%al]; var i1 = avl[(i+1)%al]; var i2 = avl[(i+2)%al]; var ax = p[2*i0], ay = p[2*i0+1]; var bx = p[2*i1], by = p[2*i1+1]; var cx = p[2*i2], cy = p[2*i2+1]; var earFound = false; if(PolyK._convex(ax, ay, bx, by, cx, cy)) { earFound = true; for(var j=0; j 3*al) break; // no convex angles :( } tgs.push(avl[0], avl[1], avl[2]); return tgs; } /* PolyK.ContainsPoint = function(p, px, py) { var n = p.length>>1; var ax, ay, bx = p[2*n-2]-px, by = p[2*n-1]-py; var depth = 0; for(var i=0; i=0 && by>=0) continue; // both "up" or both "donw" if(ax< 0 && bx< 0) continue; var lx = ax + (bx-ax)*(-ay)/(by-ay); if(lx>0) depth++; } return (depth & 1) == 1; } PolyK.Slice = function(p, ax, ay, bx, by) { if(PolyK.ContainsPoint(p, ax, ay) || PolyK.ContainsPoint(p, bx, by)) return [p.slice(0)]; var a = new PolyK._P(ax, ay); var b = new PolyK._P(bx, by); var iscs = []; // intersections var ps = []; // points for(var i=0; i 0) { var n = ps.length; var i0 = iscs[0]; var i1 = iscs[1]; var ind0 = ps.indexOf(i0); var ind1 = ps.indexOf(i1); var solved = false; if(PolyK._firstWithFlag(ps, ind0) == ind1) solved = true; else { i0 = iscs[1]; i1 = iscs[0]; ind0 = ps.indexOf(i0); ind1 = ps.indexOf(i1); if(PolyK._firstWithFlag(ps, ind0) == ind1) solved = true; } if(solved) { dir--; var pgn = PolyK._getPoints(ps, ind0, ind1); pgs.push(pgn); ps = PolyK._getPoints(ps, ind1, ind0); i0.flag = i1.flag = false; iscs.splice(0,2); if(iscs.length == 0) pgs.push(ps); } else { dir++; iscs.reverse(); } if(dir>1) break; } var result = []; for(var i=0; i>1, isc); } b1.x = b2.x; b1.y = b2.y; b2.x = p[0]; b2.y = p[1]; PolyK._pointLineDist(a1, b1, b2, l>>1, isc); var idst = 1/isc.dist; isc.norm.x = (x-isc.point.x)*idst; isc.norm.y = (y-isc.point.y)*idst; return isc; } PolyK._pointLineDist = function(p, a, b, edge, isc) { var x = p.x, y = p.y, x1 = a.x, y1 = a.y, x2 = b.x, y2 = b.y; var A = x - x1; var B = y - y1; var C = x2 - x1; var D = y2 - y1; var dot = A * C + B * D; var len_sq = C * C + D * D; var param = dot / len_sq; var xx, yy; if (param < 0 || (x1 == x2 && y1 == y2)) { xx = x1; yy = y1; } else if (param > 1) { xx = x2; yy = y2; } else { xx = x1 + param * C; yy = y1 + param * D; } var dx = x - xx; var dy = y - yy; var dst = Math.sqrt(dx * dx + dy * dy); if(dst= 0) && (v >= 0) && (u + v < 1); } /* PolyK._RayLineIntersection = function(a1, a2, b1, b2, c) { var dax = (a1.x-a2.x), dbx = (b1.x-b2.x); var day = (a1.y-a2.y), dby = (b1.y-b2.y); var Den = dax*dby - day*dbx; if (Den == 0) return null; // parallel var A = (a1.x * a2.y - a1.y * a2.x); var B = (b1.x * b2.y - b1.y * b2.x); var I = c; var iDen = 1/Den; I.x = ( A*dbx - dax*B ) * iDen; I.y = ( A*dby - day*B ) * iDen; if(!PolyK._InRect(I, b1, b2)) return null; if((day>0 && I.y>a1.y) || (day<0 && I.y0 && I.x>a1.x) || (dax<0 && I.x=Math.min(b.y, c.y) && a.y<=Math.max(b.y, c.y)); if (b.y == c.y) return (a.x>=Math.min(b.x, c.x) && a.x<=Math.max(b.x, c.x)); if(a.x >= Math.min(b.x, c.x) && a.x <= Math.max(b.x, c.x) && a.y >= Math.min(b.y, c.y) && a.y <= Math.max(b.y, c.y)) return true; return false; } */ PolyK._convex = function(ax, ay, bx, by, cx, cy) { return (ay-by)*(cx-bx) + (bx-ax)*(cy-by) >= 0; } /* PolyK._P = function(x,y) { this.x = x; this.y = y; this.flag = false; } PolyK._P.prototype.toString = function() { return "Point ["+this.x+", "+this.y+"]"; } PolyK._P.dist = function(a,b) { var dx = b.x-a.x; var dy = b.y-a.y; return Math.sqrt(dx*dx + dy*dy); } PolyK._tp = []; for(var i=0; i<10; i++) PolyK._tp.push(new PolyK._P(0,0)); */ module.exports = PolyK; },{"__browserify_Buffer":1,"__browserify_process":2}],31:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/math\\vec2.js",__dirname="/math";/* Copyright (c) 2013, Brandon Jones, Colin MacKenzie IV. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** * The vec2 object from glMatrix, with some extensions and some removed methods. See http://glmatrix.net. * @class vec2 */ var vec2 = module.exports = {}; var Utils = require('../utils/Utils'); /** * Make a cross product and only return the z component * @method crossLength * @static * @param {Array} a * @param {Array} b * @return {Number} */ vec2.crossLength = function(a,b){ return a[0] * b[1] - a[1] * b[0]; }; /** * Cross product between a vector and the Z component of a vector * @method crossVZ * @static * @param {Array} out * @param {Array} vec * @param {Number} zcomp * @return {Number} */ vec2.crossVZ = function(out, vec, zcomp){ vec2.rotate(out,vec,-Math.PI/2);// Rotate according to the right hand rule vec2.scale(out,out,zcomp); // Scale with z return out; }; /** * Cross product between a vector and the Z component of a vector * @method crossZV * @static * @param {Array} out * @param {Number} zcomp * @param {Array} vec * @return {Number} */ vec2.crossZV = function(out, zcomp, vec){ vec2.rotate(out,vec,Math.PI/2); // Rotate according to the right hand rule vec2.scale(out,out,zcomp); // Scale with z return out; }; /** * Rotate a vector by an angle * @method rotate * @static * @param {Array} out * @param {Array} a * @param {Number} angle */ vec2.rotate = function(out,a,angle){ if(angle !== 0){ var c = Math.cos(angle), s = Math.sin(angle), x = a[0], y = a[1]; out[0] = c*x -s*y; out[1] = s*x +c*y; } else { out[0] = a[0]; out[1] = a[1]; } }; /** * Rotate a vector 90 degrees clockwise * @method rotate90cw * @static * @param {Array} out * @param {Array} a * @param {Number} angle */ vec2.rotate90cw = function(out, a) { var x = a[0]; var y = a[1]; out[0] = y; out[1] = -x; }; /** * Transform a point position to local frame. * @method toLocalFrame * @param {Array} out * @param {Array} worldPoint * @param {Array} framePosition * @param {Number} frameAngle */ vec2.toLocalFrame = function(out, worldPoint, framePosition, frameAngle){ vec2.copy(out, worldPoint); vec2.sub(out, out, framePosition); vec2.rotate(out, out, -frameAngle); }; /** * Transform a point position to global frame. * @method toGlobalFrame * @param {Array} out * @param {Array} localPoint * @param {Array} framePosition * @param {Number} frameAngle */ vec2.toGlobalFrame = function(out, localPoint, framePosition, frameAngle){ vec2.copy(out, localPoint); vec2.rotate(out, out, frameAngle); vec2.add(out, out, framePosition); }; /** * Compute centroid of a triangle spanned by vectors a,b,c. See http://easycalculation.com/analytical/learn-centroid.php * @method centroid * @static * @param {Array} out * @param {Array} a * @param {Array} b * @param {Array} c * @return {Array} The out object */ vec2.centroid = function(out, a, b, c){ vec2.add(out, a, b); vec2.add(out, out, c); vec2.scale(out, out, 1/3); return out; }; /** * Creates a new, empty vec2 * @static * @method create * @return {Array} a new 2D vector */ vec2.create = function() { var out = new Utils.ARRAY_TYPE(2); out[0] = 0; out[1] = 0; return out; }; /** * Creates a new vec2 initialized with values from an existing vector * @static * @method clone * @param {Array} a vector to clone * @return {Array} a new 2D vector */ vec2.clone = function(a) { var out = new Utils.ARRAY_TYPE(2); out[0] = a[0]; out[1] = a[1]; return out; }; /** * Creates a new vec2 initialized with the given values * @static * @method fromValues * @param {Number} x X component * @param {Number} y Y component * @return {Array} a new 2D vector */ vec2.fromValues = function(x, y) { var out = new Utils.ARRAY_TYPE(2); out[0] = x; out[1] = y; return out; }; /** * Copy the values from one vec2 to another * @static * @method copy * @param {Array} out the receiving vector * @param {Array} a the source vector * @return {Array} out */ vec2.copy = function(out, a) { out[0] = a[0]; out[1] = a[1]; return out; }; /** * Set the components of a vec2 to the given values * @static * @method set * @param {Array} out the receiving vector * @param {Number} x X component * @param {Number} y Y component * @return {Array} out */ vec2.set = function(out, x, y) { out[0] = x; out[1] = y; return out; }; /** * Adds two vec2's * @static * @method add * @param {Array} out the receiving vector * @param {Array} a the first operand * @param {Array} b the second operand * @return {Array} out */ vec2.add = function(out, a, b) { out[0] = a[0] + b[0]; out[1] = a[1] + b[1]; return out; }; /** * Subtracts two vec2's * @static * @method subtract * @param {Array} out the receiving vector * @param {Array} a the first operand * @param {Array} b the second operand * @return {Array} out */ vec2.subtract = function(out, a, b) { out[0] = a[0] - b[0]; out[1] = a[1] - b[1]; return out; }; /** * Alias for vec2.subtract * @static * @method sub */ vec2.sub = vec2.subtract; /** * Multiplies two vec2's * @static * @method multiply * @param {Array} out the receiving vector * @param {Array} a the first operand * @param {Array} b the second operand * @return {Array} out */ vec2.multiply = function(out, a, b) { out[0] = a[0] * b[0]; out[1] = a[1] * b[1]; return out; }; /** * Alias for vec2.multiply * @static * @method mul */ vec2.mul = vec2.multiply; /** * Divides two vec2's * @static * @method divide * @param {Array} out the receiving vector * @param {Array} a the first operand * @param {Array} b the second operand * @return {Array} out */ vec2.divide = function(out, a, b) { out[0] = a[0] / b[0]; out[1] = a[1] / b[1]; return out; }; /** * Alias for vec2.divide * @static * @method div */ vec2.div = vec2.divide; /** * Scales a vec2 by a scalar number * @static * @method scale * @param {Array} out the receiving vector * @param {Array} a the vector to scale * @param {Number} b amount to scale the vector by * @return {Array} out */ vec2.scale = function(out, a, b) { out[0] = a[0] * b; out[1] = a[1] * b; return out; }; /** * Calculates the euclidian distance between two vec2's * @static * @method distance * @param {Array} a the first operand * @param {Array} b the second operand * @return {Number} distance between a and b */ vec2.distance = function(a, b) { var x = b[0] - a[0], y = b[1] - a[1]; return Math.sqrt(x*x + y*y); }; /** * Alias for vec2.distance * @static * @method dist */ vec2.dist = vec2.distance; /** * Calculates the squared euclidian distance between two vec2's * @static * @method squaredDistance * @param {Array} a the first operand * @param {Array} b the second operand * @return {Number} squared distance between a and b */ vec2.squaredDistance = function(a, b) { var x = b[0] - a[0], y = b[1] - a[1]; return x*x + y*y; }; /** * Alias for vec2.squaredDistance * @static * @method sqrDist */ vec2.sqrDist = vec2.squaredDistance; /** * Calculates the length of a vec2 * @static * @method length * @param {Array} a vector to calculate length of * @return {Number} length of a */ vec2.length = function (a) { var x = a[0], y = a[1]; return Math.sqrt(x*x + y*y); }; /** * Alias for vec2.length * @method len * @static */ vec2.len = vec2.length; /** * Calculates the squared length of a vec2 * @static * @method squaredLength * @param {Array} a vector to calculate squared length of * @return {Number} squared length of a */ vec2.squaredLength = function (a) { var x = a[0], y = a[1]; return x*x + y*y; }; /** * Alias for vec2.squaredLength * @static * @method sqrLen */ vec2.sqrLen = vec2.squaredLength; /** * Negates the components of a vec2 * @static * @method negate * @param {Array} out the receiving vector * @param {Array} a vector to negate * @return {Array} out */ vec2.negate = function(out, a) { out[0] = -a[0]; out[1] = -a[1]; return out; }; /** * Normalize a vec2 * @static * @method normalize * @param {Array} out the receiving vector * @param {Array} a vector to normalize * @return {Array} out */ vec2.normalize = function(out, a) { var x = a[0], y = a[1]; var len = x*x + y*y; if (len > 0) { //TODO: evaluate use of glm_invsqrt here? len = 1 / Math.sqrt(len); out[0] = a[0] * len; out[1] = a[1] * len; } return out; }; /** * Calculates the dot product of two vec2's * @static * @method dot * @param {Array} a the first operand * @param {Array} b the second operand * @return {Number} dot product of a and b */ vec2.dot = function (a, b) { return a[0] * b[0] + a[1] * b[1]; }; /** * Returns a string representation of a vector * @static * @method str * @param {Array} vec vector to represent as a string * @return {String} string representation of the vector */ vec2.str = function (a) { return 'vec2(' + a[0] + ', ' + a[1] + ')'; }; },{"../utils/Utils":50,"__browserify_Buffer":1,"__browserify_process":2}],32:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/objects\\Body.js",__dirname="/objects";var vec2 = require('../math/vec2') , decomp = require('poly-decomp') , Convex = require('../shapes/Convex') , AABB = require('../collision/AABB') , EventEmitter = require('../events/EventEmitter'); module.exports = Body; /** * A rigid body. Has got a center of mass, position, velocity and a number of * shapes that are used for collisions. * * @class Body * @constructor * @extends EventEmitter * @param {Object} [options] * @param {Number} [options.mass=0] A number >= 0. If zero, the .type will be set to Body.STATIC. * @param {Array} [options.position] * @param {Array} [options.velocity] * @param {Number} [options.angle=0] * @param {Number} [options.angularVelocity=0] * @param {Array} [options.force] * @param {Number} [options.angularForce=0] * @param {Number} [options.fixedRotation=false] * * @example * // Create a typical dynamic body * var body = new Body({ * mass: 1, * position: [0, 0], * angle: 0, * velocity: [0, 0], * angularVelocity: 0 * }); * * // Add a circular shape to the body * body.addShape(new Circle(1)); * * // Add the body to the world * world.addBody(body); */ function Body(options){ options = options || {}; EventEmitter.call(this); /** * The body identifyer * @property id * @type {Number} */ this.id = ++Body._idCounter; /** * The world that this body is added to. This property is set to NULL if the body is not added to any world. * @property world * @type {World} */ this.world = null; /** * The shapes of the body. The local transform of the shape in .shapes[i] is * defined by .shapeOffsets[i] and .shapeAngles[i]. * * @property shapes * @type {Array} */ this.shapes = []; /** * The local shape offsets, relative to the body center of mass. This is an * array of Array. * @property shapeOffsets * @type {Array} */ this.shapeOffsets = []; /** * The body-local shape angle transforms. This is an array of numbers (angles). * @property shapeAngles * @type {Array} */ this.shapeAngles = []; /** * The mass of the body. * @property mass * @type {number} */ this.mass = options.mass || 0; /** * The inverse mass of the body. * @property invMass * @type {number} */ this.invMass = 0; /** * The inertia of the body around the Z axis. * @property inertia * @type {number} */ this.inertia = 0; /** * The inverse inertia of the body. * @property invInertia * @type {number} */ this.invInertia = 0; this.invMassSolve = 0; this.invInertiaSolve = 0; /** * Set to true if you want to fix the rotation of the body. * @property fixedRotation * @type {Boolean} */ this.fixedRotation = !!options.fixedRotation; /** * The position of the body * @property position * @type {Array} */ this.position = vec2.fromValues(0,0); if(options.position){ vec2.copy(this.position, options.position); } /** * The interpolated position of the body. * @property interpolatedPosition * @type {Array} */ this.interpolatedPosition = vec2.fromValues(0,0); /** * The interpolated angle of the body. * @property interpolatedAngle * @type {Number} */ this.interpolatedAngle = 0; /** * The previous position of the body. * @property previousPosition * @type {Array} */ this.previousPosition = vec2.fromValues(0,0); /** * The previous angle of the body. * @property previousAngle * @type {Number} */ this.previousAngle = 0; /** * The velocity of the body * @property velocity * @type {Array} */ this.velocity = vec2.fromValues(0,0); if(options.velocity){ vec2.copy(this.velocity, options.velocity); } /** * Constraint velocity that was added to the body during the last step. * @property vlambda * @type {Array} */ this.vlambda = vec2.fromValues(0,0); /** * Angular constraint velocity that was added to the body during last step. * @property wlambda * @type {Array} */ this.wlambda = 0; /** * The angle of the body, in radians. * @property angle * @type {number} * @example * // The angle property is not normalized to the interval 0 to 2*pi, it can be any value. * // If you need a value between 0 and 2*pi, use the following function to normalize it. * function normalizeAngle(angle){ * angle = angle % (2*Math.PI); * if(angle < 0){ * angle += (2*Math.PI); * } * return angle; * } */ this.angle = options.angle || 0; /** * The angular velocity of the body, in radians per second. * @property angularVelocity * @type {number} */ this.angularVelocity = options.angularVelocity || 0; /** * The force acting on the body. Since the body force (and {{#crossLink "Body/angularForce:property"}}{{/crossLink}}) will be zeroed after each step, so you need to set the force before each step. * @property force * @type {Array} * * @example * // This produces a forcefield of 1 Newton in the positive x direction. * for(var i=0; i radius){ radius = offset + r; } } this.boundingRadius = radius; }; /** * Add a shape to the body. You can pass a local transform when adding a shape, * so that the shape gets an offset and angle relative to the body center of mass. * Will automatically update the mass properties and bounding radius. * * @method addShape * @param {Shape} shape * @param {Array} [offset] Local body offset of the shape. * @param {Number} [angle] Local body angle. * * @example * var body = new Body(), * shape = new Circle(); * * // Add the shape to the body, positioned in the center * body.addShape(shape); * * // Add another shape to the body, positioned 1 unit length from the body center of mass along the local x-axis. * body.addShape(shape,[1,0]); * * // Add another shape to the body, positioned 1 unit length from the body center of mass along the local y-axis, and rotated 90 degrees CCW. * body.addShape(shape,[0,1],Math.PI/2); */ Body.prototype.addShape = function(shape,offset,angle){ angle = angle || 0.0; // Copy the offset vector if(offset){ offset = vec2.fromValues(offset[0],offset[1]); } else { offset = vec2.fromValues(0,0); } this.shapes .push(shape); this.shapeOffsets.push(offset); this.shapeAngles .push(angle); this.updateMassProperties(); this.updateBoundingRadius(); this.aabbNeedsUpdate = true; }; /** * Remove a shape * @method removeShape * @param {Shape} shape * @return {Boolean} True if the shape was found and removed, else false. */ Body.prototype.removeShape = function(shape){ var idx = this.shapes.indexOf(shape); if(idx !== -1){ this.shapes.splice(idx,1); this.shapeOffsets.splice(idx,1); this.shapeAngles.splice(idx,1); this.aabbNeedsUpdate = true; return true; } else { return false; } }; /** * Updates .inertia, .invMass, .invInertia for this Body. Should be called when * changing the structure or mass of the Body. * * @method updateMassProperties * * @example * body.mass += 1; * body.updateMassProperties(); */ Body.prototype.updateMassProperties = function(){ if(this.type === Body.STATIC || this.type === Body.KINEMATIC){ this.mass = Number.MAX_VALUE; this.invMass = 0; this.inertia = Number.MAX_VALUE; this.invInertia = 0; } else { var shapes = this.shapes, N = shapes.length, m = this.mass / N, I = 0; if(!this.fixedRotation){ for(var i=0; i0 ? 1/I : 0; } else { this.inertia = Number.MAX_VALUE; this.invInertia = 0; } // Inverse mass properties are easy this.invMass = 1/this.mass;// > 0 ? 1/this.mass : 0; } }; var Body_applyForce_r = vec2.create(); /** * Apply force to a world point. This could for example be a point on the RigidBody surface. Applying force this way will add to Body.force and Body.angularForce. * @method applyForce * @param {Array} force The force to add. * @param {Array} worldPoint A world point to apply the force on. */ Body.prototype.applyForce = function(force,worldPoint){ // Compute point position relative to the body center var r = Body_applyForce_r; vec2.sub(r,worldPoint,this.position); // Add linear force vec2.add(this.force,this.force,force); // Compute produced rotational force var rotForce = vec2.crossLength(r,force); // Add rotational force this.angularForce += rotForce; }; /** * Transform a world point to local body frame. * @method toLocalFrame * @param {Array} out The vector to store the result in * @param {Array} worldPoint The input world vector */ Body.prototype.toLocalFrame = function(out, worldPoint){ vec2.toLocalFrame(out, worldPoint, this.position, this.angle); }; /** * Transform a local point to world frame. * @method toWorldFrame * @param {Array} out The vector to store the result in * @param {Array} localPoint The input local vector */ Body.prototype.toWorldFrame = function(out, localPoint){ vec2.toGlobalFrame(out, localPoint, this.position, this.angle); }; /** * Reads a polygon shape path, and assembles convex shapes from that and puts them at proper offset points. * @method fromPolygon * @param {Array} path An array of 2d vectors, e.g. [[0,0],[0,1],...] that resembles a concave or convex polygon. The shape must be simple and without holes. * @param {Object} [options] * @param {Boolean} [options.optimalDecomp=false] Set to true if you need optimal decomposition. Warning: very slow for polygons with more than 10 vertices. * @param {Boolean} [options.skipSimpleCheck=false] Set to true if you already know that the path is not intersecting itself. * @param {Boolean|Number} [options.removeCollinearPoints=false] Set to a number (angle threshold value) to remove collinear points, or false to keep all points. * @return {Boolean} True on success, else false. */ Body.prototype.fromPolygon = function(path,options){ options = options || {}; // Remove all shapes for(var i=this.shapes.length; i>=0; --i){ this.removeShape(this.shapes[i]); } var p = new decomp.Polygon(); p.vertices = path; // Make it counter-clockwise p.makeCCW(); if(typeof(options.removeCollinearPoints) === "number"){ p.removeCollinearPoints(options.removeCollinearPoints); } // Check if any line segment intersects the path itself if(typeof(options.skipSimpleCheck) === "undefined"){ if(!p.isSimple()){ return false; } } // Save this path for later this.concavePath = p.vertices.slice(0); for(var i=0; ithis for details. * @method applyDamping * @param {number} dt Current time step */ Body.prototype.applyDamping = function(dt){ if(this.type === Body.DYNAMIC){ // Only for dynamic bodies var v = this.velocity; vec2.scale(v, v, Math.pow(1.0 - this.damping,dt)); this.angularVelocity *= Math.pow(1.0 - this.angularDamping,dt); } }; /** * Wake the body up. Normally you should not need this, as the body is automatically awoken at events such as collisions. * Sets the sleepState to {{#crossLink "Body/AWAKE:property"}}Body.AWAKE{{/crossLink}} and emits the wakeUp event if the body wasn't awake before. * @method wakeUp */ Body.prototype.wakeUp = function(){ var s = this.sleepState; this.sleepState = Body.AWAKE; this.idleTime = 0; if(s !== Body.AWAKE){ this.emit(Body.wakeUpEvent); } }; /** * Force body sleep * @method sleep */ Body.prototype.sleep = function(){ this.sleepState = Body.SLEEPING; this.angularVelocity = 0; this.angularForce = 0; vec2.set(this.velocity,0,0); vec2.set(this.force,0,0); this.emit(Body.sleepEvent); }; /** * Called every timestep to update internal sleep timer and change sleep state if needed. * @method sleepTick * @param {number} time The world time in seconds * @param {boolean} dontSleep * @param {number} dt */ Body.prototype.sleepTick = function(time, dontSleep, dt){ if(!this.allowSleep || this.type === Body.SLEEPING){ return; } this.wantsToSleep = false; var sleepState = this.sleepState, speedSquared = vec2.squaredLength(this.velocity) + Math.pow(this.angularVelocity,2), speedLimitSquared = Math.pow(this.sleepSpeedLimit,2); // Add to idle time if(speedSquared >= speedLimitSquared){ this.idleTime = 0; this.sleepState = Body.AWAKE; } else { this.idleTime += dt; this.sleepState = Body.SLEEPY; } if(this.idleTime > this.sleepTimeLimit){ if(!dontSleep){ this.sleep(); } else { this.wantsToSleep = true; } } /* if(sleepState===Body.AWAKE && speedSquared < speedLimitSquared){ this.sleepState = Body.SLEEPY; // Sleepy this.timeLastSleepy = time; this.emit(Body.sleepyEvent); } else if(sleepState===Body.SLEEPY && speedSquared >= speedLimitSquared){ this.wakeUp(); // Wake up } else if(sleepState===Body.SLEEPY && (time - this.timeLastSleepy ) > this.sleepTimeLimit){ this.wantsToSleep = true; if(!dontSleep){ this.sleep(); } } */ }; Body.prototype.getVelocityFromPosition = function(store, timeStep){ store = store || vec2.create(); vec2.sub(store, this.position, this.previousPosition); vec2.scale(store, store, 1/timeStep); return store; }; Body.prototype.getAngularVelocityFromPosition = function(timeStep){ return (this.angle - this.previousAngle) / timeStep; }; /** * Check if the body is overlapping another body. Note that this method only works if the body was added to a World and if at least one step was taken. * @method overlaps * @param {Body} body * @return {boolean} */ Body.prototype.overlaps = function(body){ return this.world.overlapKeeper.bodiesAreOverlapping(this, body); }; /** * @event sleepy */ Body.sleepyEvent = { type: "sleepy" }; /** * @event sleep */ Body.sleepEvent = { type: "sleep" }; /** * @event wakeup */ Body.wakeUpEvent = { type: "wakeup" }; /** * Dynamic body. * @property DYNAMIC * @type {Number} * @static */ Body.DYNAMIC = 1; /** * Static body. * @property STATIC * @type {Number} * @static */ Body.STATIC = 2; /** * Kinematic body. * @property KINEMATIC * @type {Number} * @static */ Body.KINEMATIC = 4; /** * @property AWAKE * @type {Number} * @static */ Body.AWAKE = 0; /** * @property SLEEPY * @type {Number} * @static */ Body.SLEEPY = 1; /** * @property SLEEPING * @type {Number} * @static */ Body.SLEEPING = 2; },{"../collision/AABB":9,"../events/EventEmitter":27,"../math/vec2":31,"../shapes/Convex":39,"__browserify_Buffer":1,"__browserify_process":2,"poly-decomp":7}],33:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/objects\\LinearSpring.js",__dirname="/objects";var vec2 = require('../math/vec2'); var Spring = require('./Spring'); var Utils = require('../utils/Utils'); module.exports = LinearSpring; /** * A spring, connecting two bodies. * * The Spring explicitly adds force and angularForce to the bodies. * * @class LinearSpring * @extends Spring * @constructor * @param {Body} bodyA * @param {Body} bodyB * @param {Object} [options] * @param {number} [options.restLength] A number > 0. Default is the current distance between the world anchor points. * @param {number} [options.stiffness=100] Spring constant (see Hookes Law). A number >= 0. * @param {number} [options.damping=1] A number >= 0. Default: 1 * @param {Array} [options.worldAnchorA] Where to hook the spring to body A, in world coordinates. Overrides the option "localAnchorA" if given. * @param {Array} [options.worldAnchorB] * @param {Array} [options.localAnchorA] Where to hook the spring to body A, in local body coordinates. Defaults to the body center. * @param {Array} [options.localAnchorB] */ function LinearSpring(bodyA,bodyB,options){ options = options || {}; Spring.call(this, bodyA, bodyB, options); /** * Anchor for bodyA in local bodyA coordinates. * @property localAnchorA * @type {Array} */ this.localAnchorA = vec2.fromValues(0,0); /** * Anchor for bodyB in local bodyB coordinates. * @property localAnchorB * @type {Array} */ this.localAnchorB = vec2.fromValues(0,0); if(options.localAnchorA){ vec2.copy(this.localAnchorA, options.localAnchorA); } if(options.localAnchorB){ vec2.copy(this.localAnchorB, options.localAnchorB); } if(options.worldAnchorA){ this.setWorldAnchorA(options.worldAnchorA); } if(options.worldAnchorB){ this.setWorldAnchorB(options.worldAnchorB); } var worldAnchorA = vec2.create(); var worldAnchorB = vec2.create(); this.getWorldAnchorA(worldAnchorA); this.getWorldAnchorB(worldAnchorB); var worldDistance = vec2.distance(worldAnchorA, worldAnchorB); /** * Rest length of the spring. * @property restLength * @type {number} */ this.restLength = typeof(options.restLength) === "number" ? options.restLength : worldDistance; } LinearSpring.prototype = new Spring(); /** * Set the anchor point on body A, using world coordinates. * @method setWorldAnchorA * @param {Array} worldAnchorA */ LinearSpring.prototype.setWorldAnchorA = function(worldAnchorA){ this.bodyA.toLocalFrame(this.localAnchorA, worldAnchorA); }; /** * Set the anchor point on body B, using world coordinates. * @method setWorldAnchorB * @param {Array} worldAnchorB */ LinearSpring.prototype.setWorldAnchorB = function(worldAnchorB){ this.bodyB.toLocalFrame(this.localAnchorB, worldAnchorB); }; /** * Get the anchor point on body A, in world coordinates. * @method getWorldAnchorA * @param {Array} result The vector to store the result in. */ LinearSpring.prototype.getWorldAnchorA = function(result){ this.bodyA.toWorldFrame(result, this.localAnchorA); }; /** * Get the anchor point on body B, in world coordinates. * @method getWorldAnchorB * @param {Array} result The vector to store the result in. */ LinearSpring.prototype.getWorldAnchorB = function(result){ this.bodyB.toWorldFrame(result, this.localAnchorB); }; var applyForce_r = vec2.create(), applyForce_r_unit = vec2.create(), applyForce_u = vec2.create(), applyForce_f = vec2.create(), applyForce_worldAnchorA = vec2.create(), applyForce_worldAnchorB = vec2.create(), applyForce_ri = vec2.create(), applyForce_rj = vec2.create(), applyForce_tmp = vec2.create(); /** * Apply the spring force to the connected bodies. * @method applyForce */ LinearSpring.prototype.applyForce = function(){ var k = this.stiffness, d = this.damping, l = this.restLength, bodyA = this.bodyA, bodyB = this.bodyB, r = applyForce_r, r_unit = applyForce_r_unit, u = applyForce_u, f = applyForce_f, tmp = applyForce_tmp; var worldAnchorA = applyForce_worldAnchorA, worldAnchorB = applyForce_worldAnchorB, ri = applyForce_ri, rj = applyForce_rj; // Get world anchors this.getWorldAnchorA(worldAnchorA); this.getWorldAnchorB(worldAnchorB); // Get offset points vec2.sub(ri, worldAnchorA, bodyA.position); vec2.sub(rj, worldAnchorB, bodyB.position); // Compute distance vector between world anchor points vec2.sub(r, worldAnchorB, worldAnchorA); var rlen = vec2.len(r); vec2.normalize(r_unit,r); //console.log(rlen) //console.log("A",vec2.str(worldAnchorA),"B",vec2.str(worldAnchorB)) // Compute relative velocity of the anchor points, u vec2.sub(u, bodyB.velocity, bodyA.velocity); vec2.crossZV(tmp, bodyB.angularVelocity, rj); vec2.add(u, u, tmp); vec2.crossZV(tmp, bodyA.angularVelocity, ri); vec2.sub(u, u, tmp); // F = - k * ( x - L ) - D * ( u ) vec2.scale(f, r_unit, -k*(rlen-l) - d*vec2.dot(u,r_unit)); // Add forces to bodies vec2.sub( bodyA.force, bodyA.force, f); vec2.add( bodyB.force, bodyB.force, f); // Angular force var ri_x_f = vec2.crossLength(ri, f); var rj_x_f = vec2.crossLength(rj, f); bodyA.angularForce -= ri_x_f; bodyB.angularForce += rj_x_f; }; },{"../math/vec2":31,"../utils/Utils":50,"./Spring":35,"__browserify_Buffer":1,"__browserify_process":2}],34:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/objects\\RotationalSpring.js",__dirname="/objects";var vec2 = require('../math/vec2'); var Spring = require('./Spring'); module.exports = RotationalSpring; /** * A rotational spring, connecting two bodies rotation. This spring explicitly adds angularForce (torque) to the bodies. * * The spring can be combined with a {{#crossLink "RevoluteConstraint"}}{{/crossLink}} to make, for example, a mouse trap. * * @class RotationalSpring * @extends Spring * @constructor * @param {Body} bodyA * @param {Body} bodyB * @param {Object} [options] * @param {number} [options.restAngle] The relative angle of bodies at which the spring is at rest. If not given, it's set to the current relative angle between the bodies. * @param {number} [options.stiffness=100] Spring constant (see Hookes Law). A number >= 0. * @param {number} [options.damping=1] A number >= 0. */ function RotationalSpring(bodyA, bodyB, options){ options = options || {}; Spring.call(this, bodyA, bodyB, options); /** * Rest angle of the spring. * @property restAngle * @type {number} */ this.restAngle = typeof(options.restAngle) === "number" ? options.restAngle : bodyB.angle - bodyA.angle; } RotationalSpring.prototype = new Spring(); /** * Apply the spring force to the connected bodies. * @method applyForce */ RotationalSpring.prototype.applyForce = function(){ var k = this.stiffness, d = this.damping, l = this.restAngle, bodyA = this.bodyA, bodyB = this.bodyB, x = bodyB.angle - bodyA.angle, u = bodyB.angularVelocity - bodyA.angularVelocity; var torque = - k * (x - l) - d * u * 0; bodyA.angularForce -= torque; bodyB.angularForce += torque; }; },{"../math/vec2":31,"./Spring":35,"__browserify_Buffer":1,"__browserify_process":2}],35:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/objects\\Spring.js",__dirname="/objects";var vec2 = require('../math/vec2'); var Utils = require('../utils/Utils'); module.exports = Spring; /** * A spring, connecting two bodies. The Spring explicitly adds force and angularForce to the bodies and does therefore not put load on the constraint solver. * * @class Spring * @constructor * @param {Body} bodyA * @param {Body} bodyB * @param {Object} [options] * @param {number} [options.stiffness=100] Spring constant (see Hookes Law). A number >= 0. * @param {number} [options.damping=1] A number >= 0. Default: 1 * @param {Array} [options.localAnchorA] Where to hook the spring to body A, in local body coordinates. Defaults to the body center. * @param {Array} [options.localAnchorB] * @param {Array} [options.worldAnchorA] Where to hook the spring to body A, in world coordinates. Overrides the option "localAnchorA" if given. * @param {Array} [options.worldAnchorB] */ function Spring(bodyA, bodyB, options){ options = Utils.defaults(options,{ stiffness: 100, damping: 1, }); /** * Stiffness of the spring. * @property stiffness * @type {number} */ this.stiffness = options.stiffness; /** * Damping of the spring. * @property damping * @type {number} */ this.damping = options.damping; /** * First connected body. * @property bodyA * @type {Body} */ this.bodyA = bodyA; /** * Second connected body. * @property bodyB * @type {Body} */ this.bodyB = bodyB; } /** * Apply the spring force to the connected bodies. * @method applyForce */ Spring.prototype.applyForce = function(){ // To be implemented by subclasses }; },{"../math/vec2":31,"../utils/Utils":50,"__browserify_Buffer":1,"__browserify_process":2}],36:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/p2.js",__dirname="/";// Export p2 classes module.exports = { AABB : require('./collision/AABB'), AngleLockEquation : require('./equations/AngleLockEquation'), Body : require('./objects/Body'), Broadphase : require('./collision/Broadphase'), Capsule : require('./shapes/Capsule'), Circle : require('./shapes/Circle'), Constraint : require('./constraints/Constraint'), ContactEquation : require('./equations/ContactEquation'), ContactMaterial : require('./material/ContactMaterial'), Convex : require('./shapes/Convex'), DistanceConstraint : require('./constraints/DistanceConstraint'), Equation : require('./equations/Equation'), EventEmitter : require('./events/EventEmitter'), FrictionEquation : require('./equations/FrictionEquation'), GearConstraint : require('./constraints/GearConstraint'), GridBroadphase : require('./collision/GridBroadphase'), GSSolver : require('./solver/GSSolver'), Heightfield : require('./shapes/Heightfield'), Line : require('./shapes/Line'), LockConstraint : require('./constraints/LockConstraint'), Material : require('./material/Material'), Narrowphase : require('./collision/Narrowphase'), NaiveBroadphase : require('./collision/NaiveBroadphase'), Particle : require('./shapes/Particle'), Plane : require('./shapes/Plane'), RevoluteConstraint : require('./constraints/RevoluteConstraint'), PrismaticConstraint : require('./constraints/PrismaticConstraint'), Rectangle : require('./shapes/Rectangle'), RotationalVelocityEquation : require('./equations/RotationalVelocityEquation'), SAPBroadphase : require('./collision/SAPBroadphase'), Shape : require('./shapes/Shape'), Solver : require('./solver/Solver'), Spring : require('./objects/Spring'), LinearSpring : require('./objects/LinearSpring'), RotationalSpring : require('./objects/RotationalSpring'), Utils : require('./utils/Utils'), World : require('./world/World'), vec2 : require('./math/vec2'), version : require('../package.json').version, }; },{"../package.json":8,"./collision/AABB":9,"./collision/Broadphase":10,"./collision/GridBroadphase":11,"./collision/NaiveBroadphase":12,"./collision/Narrowphase":13,"./collision/SAPBroadphase":14,"./constraints/Constraint":15,"./constraints/DistanceConstraint":16,"./constraints/GearConstraint":17,"./constraints/LockConstraint":18,"./constraints/PrismaticConstraint":19,"./constraints/RevoluteConstraint":20,"./equations/AngleLockEquation":21,"./equations/ContactEquation":22,"./equations/Equation":23,"./equations/FrictionEquation":24,"./equations/RotationalVelocityEquation":26,"./events/EventEmitter":27,"./material/ContactMaterial":28,"./material/Material":29,"./math/vec2":31,"./objects/Body":32,"./objects/LinearSpring":33,"./objects/RotationalSpring":34,"./objects/Spring":35,"./shapes/Capsule":37,"./shapes/Circle":38,"./shapes/Convex":39,"./shapes/Heightfield":40,"./shapes/Line":41,"./shapes/Particle":42,"./shapes/Plane":43,"./shapes/Rectangle":44,"./shapes/Shape":45,"./solver/GSSolver":46,"./solver/Solver":47,"./utils/Utils":50,"./world/World":54,"__browserify_Buffer":1,"__browserify_process":2}],37:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/shapes\\Capsule.js",__dirname="/shapes";var Shape = require('./Shape') , vec2 = require('../math/vec2'); module.exports = Capsule; /** * Capsule shape class. * @class Capsule * @constructor * @extends Shape * @param {Number} [length=1] The distance between the end points * @param {Number} [radius=1] Radius of the capsule * @example * var radius = 1; * var length = 2; * var capsuleShape = new Capsule(length, radius); * body.addShape(capsuleShape); */ function Capsule(length, radius){ /** * The distance between the end points. * @property {Number} length */ this.length = length || 1; /** * The radius of the capsule. * @property {Number} radius */ this.radius = radius || 1; Shape.call(this,Shape.CAPSULE); } Capsule.prototype = new Shape(); /** * Compute the mass moment of inertia of the Capsule. * @method conputeMomentOfInertia * @param {Number} mass * @return {Number} * @todo */ Capsule.prototype.computeMomentOfInertia = function(mass){ // Approximate with rectangle var r = this.radius, w = this.length + r, // 2*r is too much, 0 is too little h = r*2; return mass * (h*h + w*w) / 12; }; /** * @method updateBoundingRadius */ Capsule.prototype.updateBoundingRadius = function(){ this.boundingRadius = this.radius + this.length/2; }; /** * @method updateArea */ Capsule.prototype.updateArea = function(){ this.area = Math.PI * this.radius * this.radius + this.radius * 2 * this.length; }; var r = vec2.create(); /** * @method computeAABB * @param {AABB} out The resulting AABB. * @param {Array} position * @param {Number} angle */ Capsule.prototype.computeAABB = function(out, position, angle){ var radius = this.radius; // Compute center position of one of the the circles, world oriented, but with local offset vec2.set(r,this.length / 2,0); if(angle !== 0){ vec2.rotate(r,r,angle); } // Get bounds vec2.set(out.upperBound, Math.max(r[0]+radius, -r[0]+radius), Math.max(r[1]+radius, -r[1]+radius)); vec2.set(out.lowerBound, Math.min(r[0]-radius, -r[0]-radius), Math.min(r[1]-radius, -r[1]-radius)); // Add offset vec2.add(out.lowerBound, out.lowerBound, position); vec2.add(out.upperBound, out.upperBound, position); }; },{"../math/vec2":31,"./Shape":45,"__browserify_Buffer":1,"__browserify_process":2}],38:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/shapes\\Circle.js",__dirname="/shapes";var Shape = require('./Shape') , vec2 = require('../math/vec2'); module.exports = Circle; /** * Circle shape class. * @class Circle * @extends Shape * @constructor * @param {number} [radius=1] The radius of this circle * * @example * var radius = 1; * var circleShape = new Circle(radius); * body.addShape(circleShape); */ function Circle(radius){ /** * The radius of the circle. * @property radius * @type {number} */ this.radius = radius || 1; Shape.call(this,Shape.CIRCLE); } Circle.prototype = new Shape(); /** * @method computeMomentOfInertia * @param {Number} mass * @return {Number} */ Circle.prototype.computeMomentOfInertia = function(mass){ var r = this.radius; return mass * r * r / 2; }; /** * @method updateBoundingRadius * @return {Number} */ Circle.prototype.updateBoundingRadius = function(){ this.boundingRadius = this.radius; }; /** * @method updateArea * @return {Number} */ Circle.prototype.updateArea = function(){ this.area = Math.PI * this.radius * this.radius; }; /** * @method computeAABB * @param {AABB} out The resulting AABB. * @param {Array} position * @param {Number} angle */ Circle.prototype.computeAABB = function(out, position, angle){ var r = this.radius; vec2.set(out.upperBound, r, r); vec2.set(out.lowerBound, -r, -r); if(position){ vec2.add(out.lowerBound, out.lowerBound, position); vec2.add(out.upperBound, out.upperBound, position); } }; },{"../math/vec2":31,"./Shape":45,"__browserify_Buffer":1,"__browserify_process":2}],39:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/shapes\\Convex.js",__dirname="/shapes";var Shape = require('./Shape') , vec2 = require('../math/vec2') , polyk = require('../math/polyk') , decomp = require('poly-decomp'); module.exports = Convex; /** * Convex shape class. * @class Convex * @constructor * @extends Shape * @param {Array} vertices An array of vertices that span this shape. Vertices are given in counter-clockwise (CCW) direction. * @param {Array} [axes] An array of unit length vectors, representing the symmetry axes in the convex. * @example * // Create a box * var vertices = [[-1,-1], [1,-1], [1,1], [-1,1]]; * var convexShape = new Convex(vertices); * body.addShape(convexShape); */ function Convex(vertices, axes){ /** * Vertices defined in the local frame. * @property vertices * @type {Array} */ this.vertices = []; /** * Axes defined in the local frame. * @property axes * @type {Array} */ this.axes = []; // Copy the verts for(var i=0; i max){ max = value; } if(min === null || value < min){ min = value; } } if(min > max){ var t = min; min = max; max = t; } vec2.set(result, min, max); }; Convex.prototype.projectOntoWorldAxis = function(localAxis, shapeOffset, shapeAngle, result){ var worldAxis = tmpVec2; this.projectOntoLocalAxis(localAxis, result); // Project the position of the body onto the axis - need to add this to the result if(shapeAngle !== 0){ vec2.rotate(worldAxis, localAxis, shapeAngle); } else { worldAxis = localAxis; } var offset = vec2.dot(shapeOffset, worldAxis); vec2.set(result, result[0] + offset, result[1] + offset); }; /** * Update the .triangles property * @method updateTriangles */ Convex.prototype.updateTriangles = function(){ this.triangles.length = 0; // Rewrite on polyk notation, array of numbers var polykVerts = []; for(var i=0; i r2){ r2 = l2; } } this.boundingRadius = Math.sqrt(r2); }; /** * Get the area of the triangle spanned by the three points a, b, c. The area is positive if the points are given in counter-clockwise order, otherwise negative. * @static * @method triangleArea * @param {Array} a * @param {Array} b * @param {Array} c * @return {Number} */ Convex.triangleArea = function(a,b,c){ return (((b[0] - a[0])*(c[1] - a[1]))-((c[0] - a[0])*(b[1] - a[1]))) * 0.5; }; /** * Update the .area * @method updateArea */ Convex.prototype.updateArea = function(){ this.updateTriangles(); this.area = 0; var triangles = this.triangles, verts = this.vertices; for(var i=0; i!==triangles.length; i++){ var t = triangles[i], a = verts[t[0]], b = verts[t[1]], c = verts[t[2]]; // Get mass for the triangle (density=1 in this case) var m = Convex.triangleArea(a,b,c); this.area += m; } }; /** * @method computeAABB * @param {AABB} out * @param {Array} position * @param {Number} angle */ Convex.prototype.computeAABB = function(out, position, angle){ out.setFromPoints(this.vertices, position, angle, 0); }; },{"../math/polyk":30,"../math/vec2":31,"./Shape":45,"__browserify_Buffer":1,"__browserify_process":2,"poly-decomp":7}],40:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/shapes\\Heightfield.js",__dirname="/shapes";var Shape = require('./Shape') , vec2 = require('../math/vec2') , Utils = require('../utils/Utils'); module.exports = Heightfield; /** * Heightfield shape class. Height data is given as an array. These data points are spread out evenly with a distance "elementWidth". * @class Heightfield * @extends Shape * @constructor * @param {Array} data An array of Y values that will be used to construct the terrain. * @param {object} options * @param {Number} [options.minValue] Minimum value of the data points in the data array. Will be computed automatically if not given. * @param {Number} [options.maxValue] Maximum value. * @param {Number} [options.elementWidth=0.1] World spacing between the data points in X direction. * @todo Should be possible to use along all axes, not just y * * @example * // Generate some height data (y-values). * var data = []; * for(var i = 0; i < 1000; i++){ * var y = 0.5 * Math.cos(0.2 * i); * data.push(y); * } * * // Create the heightfield shape * var heightfieldShape = new Heightfield(data, { * elementWidth: 1 // Distance between the data points in X direction * }); * var heightfieldBody = new Body(); * heightfieldBody.addShape(heightfieldShape); * world.addBody(heightfieldBody); */ function Heightfield(data, options){ options = Utils.defaults(options, { maxValue : null, minValue : null, elementWidth : 0.1 }); if(options.minValue === null || options.maxValue === null){ options.maxValue = data[0]; options.minValue = data[0]; for(var i=0; i !== data.length; i++){ var v = data[i]; if(v > options.maxValue){ options.maxValue = v; } if(v < options.minValue){ options.minValue = v; } } } /** * An array of numbers, or height values, that are spread out along the x axis. * @property {array} data */ this.data = data; /** * Max value of the data * @property {number} maxValue */ this.maxValue = options.maxValue; /** * Max value of the data * @property {number} minValue */ this.minValue = options.minValue; /** * The width of each element * @property {number} elementWidth */ this.elementWidth = options.elementWidth; Shape.call(this,Shape.HEIGHTFIELD); } Heightfield.prototype = new Shape(); /** * @method computeMomentOfInertia * @param {Number} mass * @return {Number} */ Heightfield.prototype.computeMomentOfInertia = function(mass){ return Number.MAX_VALUE; }; Heightfield.prototype.updateBoundingRadius = function(){ this.boundingRadius = Number.MAX_VALUE; }; Heightfield.prototype.updateArea = function(){ var data = this.data, area = 0; for(var i=0; ithis tutorial. * @property collisionGroup * @type {Number} * @example * // Setup bits for each available group * var PLAYER = Math.pow(2,0), * ENEMY = Math.pow(2,1), * GROUND = Math.pow(2,2) * * // Put shapes into their groups * player1Shape.collisionGroup = PLAYER; * player2Shape.collisionGroup = PLAYER; * enemyShape .collisionGroup = ENEMY; * groundShape .collisionGroup = GROUND; * * // Assign groups that each shape collide with. * // Note that the players can collide with ground and enemies, but not with other players. * player1Shape.collisionMask = ENEMY | GROUND; * player2Shape.collisionMask = ENEMY | GROUND; * enemyShape .collisionMask = PLAYER | GROUND; * groundShape .collisionMask = PLAYER | ENEMY; * * @example * // How collision check is done * if(shapeA.collisionGroup & shapeB.collisionMask)!=0 && (shapeB.collisionGroup & shapeA.collisionMask)!=0){ * // The shapes will collide * } */ this.collisionGroup = 1; /** * Collision mask of this shape. See .collisionGroup. * @property collisionMask * @type {Number} */ this.collisionMask = 1; if(type){ this.updateBoundingRadius(); } /** * Material to use in collisions for this Shape. If this is set to null, the world will use default material properties instead. * @property material * @type {Material} */ this.material = null; /** * Area of this shape. * @property area * @type {Number} */ this.area = 0; /** * Set to true if you want this shape to be a sensor. A sensor does not generate contacts, but it still reports contact events. This is good if you want to know if a shape is overlapping another shape, without them generating contacts. * @property {Boolean} sensor */ this.sensor = false; this.updateArea(); } Shape.idCounter = 0; /** * @static * @property {Number} CIRCLE */ Shape.CIRCLE = 1; /** * @static * @property {Number} PARTICLE */ Shape.PARTICLE = 2; /** * @static * @property {Number} PLANE */ Shape.PLANE = 4; /** * @static * @property {Number} CONVEX */ Shape.CONVEX = 8; /** * @static * @property {Number} LINE */ Shape.LINE = 16; /** * @static * @property {Number} RECTANGLE */ Shape.RECTANGLE = 32; /** * @static * @property {Number} CAPSULE */ Shape.CAPSULE = 64; /** * @static * @property {Number} HEIGHTFIELD */ Shape.HEIGHTFIELD = 128; /** * Should return the moment of inertia around the Z axis of the body given the total mass. See Wikipedia's list of moments of inertia. * @method computeMomentOfInertia * @param {Number} mass * @return {Number} If the inertia is infinity or if the object simply isn't possible to rotate, return 0. */ Shape.prototype.computeMomentOfInertia = function(mass){ throw new Error("Shape.computeMomentOfInertia is not implemented in this Shape..."); }; /** * Returns the bounding circle radius of this shape. * @method updateBoundingRadius * @return {Number} */ Shape.prototype.updateBoundingRadius = function(){ throw new Error("Shape.updateBoundingRadius is not implemented in this Shape..."); }; /** * Update the .area property of the shape. * @method updateArea */ Shape.prototype.updateArea = function(){ // To be implemented in all subclasses }; /** * Compute the world axis-aligned bounding box (AABB) of this shape. * @method computeAABB * @param {AABB} out The resulting AABB. * @param {Array} position * @param {Number} angle */ Shape.prototype.computeAABB = function(out, position, angle){ // To be implemented in each subclass }; },{"__browserify_Buffer":1,"__browserify_process":2}],46:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/solver\\GSSolver.js",__dirname="/solver";var vec2 = require('../math/vec2') , Solver = require('./Solver') , Utils = require('../utils/Utils') , FrictionEquation = require('../equations/FrictionEquation'); module.exports = GSSolver; /** * Iterative Gauss-Seidel constraint equation solver. * * @class GSSolver * @constructor * @extends Solver * @param {Object} [options] * @param {Number} [options.iterations=10] * @param {Number} [options.tolerance=0] */ function GSSolver(options){ Solver.call(this,options,Solver.GS); options = options || {}; /** * The number of iterations to do when solving. More gives better results, but is more expensive. * @property iterations * @type {Number} */ this.iterations = options.iterations || 10; /** * The error tolerance, per constraint. If the total error is below this limit, the solver will stop iterating. Set to zero for as good solution as possible, but to something larger than zero to make computations faster. * @property tolerance * @type {Number} */ this.tolerance = options.tolerance || 1e-10; this.arrayStep = 30; this.lambda = new Utils.ARRAY_TYPE(this.arrayStep); this.Bs = new Utils.ARRAY_TYPE(this.arrayStep); this.invCs = new Utils.ARRAY_TYPE(this.arrayStep); /** * Set to true to set all right hand side terms to zero when solving. Can be handy for a few applications. * @property useZeroRHS * @type {Boolean} */ this.useZeroRHS = false; /** * Number of solver iterations that are done to approximate normal forces. When these iterations are done, friction force will be computed from the contact normal forces. These friction forces will override any other friction forces set from the World for example. * The solver will use less iterations if the solution is below the .tolerance. * @property frictionIterations * @type {Number} */ this.frictionIterations = 0; /** * The number of iterations that were made during the last solve. If .tolerance is zero, this value will always be equal to .iterations, but if .tolerance is larger than zero, and the solver can quit early, then this number will be somewhere between 1 and .iterations. * @property {Number} usedIterations */ this.usedIterations = 0; } GSSolver.prototype = new Solver(); function setArrayZero(array){ var l = array.length; while(l--){ array[l] = +0.0; } } /** * Solve the system of equations * @method solve * @param {Number} h Time step * @param {World} world World to solve */ GSSolver.prototype.solve = function(h, world){ this.sortEquations(); var iter = 0, maxIter = this.iterations, maxFrictionIter = this.frictionIterations, equations = this.equations, Neq = equations.length, tolSquared = Math.pow(this.tolerance*Neq, 2), bodies = world.bodies, Nbodies = world.bodies.length, add = vec2.add, set = vec2.set, useZeroRHS = this.useZeroRHS, lambda = this.lambda; this.usedIterations = 0; if(Neq){ for(var i=0; i!==Nbodies; i++){ var b = bodies[i]; // Update solve mass b.updateSolveMassProperties(); } } // Things that does not change during iteration can be computed once if(lambda.length < Neq){ lambda = this.lambda = new Utils.ARRAY_TYPE(Neq + this.arrayStep); this.Bs = new Utils.ARRAY_TYPE(Neq + this.arrayStep); this.invCs = new Utils.ARRAY_TYPE(Neq + this.arrayStep); } setArrayZero(lambda); var invCs = this.invCs, Bs = this.Bs, lambda = this.lambda; for(var i=0; i!==equations.length; i++){ var c = equations[i]; if(c.timeStep !== h || c.needsUpdate){ c.timeStep = h; c.update(); } Bs[i] = c.computeB(c.a,c.b,h); invCs[i] = c.computeInvC(c.epsilon); } var q, B, c, deltalambdaTot,i,j; if(Neq !== 0){ for(i=0; i!==Nbodies; i++){ var b = bodies[i]; // Reset vlambda b.resetConstraintVelocity(); } if(maxFrictionIter){ // Iterate over contact equations to get normal forces for(iter=0; iter!==maxFrictionIter; iter++){ // Accumulate the total error for each iteration. deltalambdaTot = 0.0; for(j=0; j!==Neq; j++){ c = equations[j]; var deltalambda = GSSolver.iterateEquation(j,c,c.epsilon,Bs,invCs,lambda,useZeroRHS,h,iter); deltalambdaTot += Math.abs(deltalambda); } this.usedIterations++; // If the total error is small enough - stop iterate if(deltalambdaTot*deltalambdaTot <= tolSquared){ break; } } GSSolver.updateMultipliers(equations, lambda, 1/h); // Set computed friction force for(j=0; j!==Neq; j++){ var eq = equations[j]; if(eq instanceof FrictionEquation){ var f = 0.0; for(var k=0; k!==eq.contactEquations.length; k++){ f += eq.contactEquations[k].multiplier; } f *= eq.frictionCoefficient / eq.contactEquations.length; eq.maxForce = f; eq.minForce = -f; } } } // Iterate over all equations for(iter=0; iter!==maxIter; iter++){ // Accumulate the total error for each iteration. deltalambdaTot = 0.0; for(j=0; j!==Neq; j++){ c = equations[j]; var deltalambda = GSSolver.iterateEquation(j,c,c.epsilon,Bs,invCs,lambda,useZeroRHS,h,iter); deltalambdaTot += Math.abs(deltalambda); } this.usedIterations++; // If the total error is small enough - stop iterate if(deltalambdaTot*deltalambdaTot <= tolSquared){ break; } } // Add result to velocity for(i=0; i!==Nbodies; i++){ bodies[i].addConstraintVelocity(); } GSSolver.updateMultipliers(equations, lambda, 1/h); } }; // Sets the .multiplier property of each equation GSSolver.updateMultipliers = function(equations, lambda, invDt){ // Set the .multiplier property of each equation var l = equations.length; while(l--){ equations[l].multiplier = lambda[l] * invDt; } }; GSSolver.iterateEquation = function(j,eq,eps,Bs,invCs,lambda,useZeroRHS,dt,iter){ // Compute iteration var B = Bs[j], invC = invCs[j], lambdaj = lambda[j], GWlambda = eq.computeGWlambda(); var maxForce = eq.maxForce, minForce = eq.minForce; if(useZeroRHS){ B = 0; } var deltalambda = invC * ( B - GWlambda - eps * lambdaj ); // Clamp if we are not within the min/max interval var lambdaj_plus_deltalambda = lambdaj + deltalambda; if(lambdaj_plus_deltalambda < minForce*dt){ deltalambda = minForce*dt - lambdaj; } else if(lambdaj_plus_deltalambda > maxForce*dt){ deltalambda = maxForce*dt - lambdaj; } lambda[j] += deltalambda; eq.addToWlambda(deltalambda); return deltalambda; }; },{"../equations/FrictionEquation":24,"../math/vec2":31,"../utils/Utils":50,"./Solver":47,"__browserify_Buffer":1,"__browserify_process":2}],47:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/solver\\Solver.js",__dirname="/solver";var Utils = require('../utils/Utils') , EventEmitter = require('../events/EventEmitter'); module.exports = Solver; /** * Base class for constraint solvers. * @class Solver * @constructor * @extends EventEmitter */ function Solver(options,type){ options = options || {}; EventEmitter.call(this); this.type = type; /** * Current equations in the solver. * * @property equations * @type {Array} */ this.equations = []; /** * Function that is used to sort all equations before each solve. * @property equationSortFunction * @type {function|boolean} */ this.equationSortFunction = options.equationSortFunction || false; } Solver.prototype = new EventEmitter(); /** * Method to be implemented in each subclass * @method solve * @param {Number} dt * @param {World} world */ Solver.prototype.solve = function(dt,world){ throw new Error("Solver.solve should be implemented by subclasses!"); }; var mockWorld = {bodies:[]}; /** * Solves all constraints in an island. * @method solveIsland * @param {Number} dt * @param {Island} island */ Solver.prototype.solveIsland = function(dt,island){ this.removeAllEquations(); if(island.equations.length){ // Add equations to solver this.addEquations(island.equations); mockWorld.bodies.length = 0; island.getBodies(mockWorld.bodies); // Solve if(mockWorld.bodies.length){ this.solve(dt,mockWorld); } } }; /** * Sort all equations using the .equationSortFunction. Should be called by subclasses before solving. * @method sortEquations */ Solver.prototype.sortEquations = function(){ if(this.equationSortFunction){ this.equations.sort(this.equationSortFunction); } }; /** * Add an equation to be solved. * * @method addEquation * @param {Equation} eq */ Solver.prototype.addEquation = function(eq){ if(eq.enabled){ this.equations.push(eq); } }; /** * Add equations. Same as .addEquation, but this time the argument is an array of Equations * * @method addEquations * @param {Array} eqs */ Solver.prototype.addEquations = function(eqs){ //Utils.appendArray(this.equations,eqs); for(var i=0, N=eqs.length; i!==N; i++){ var eq = eqs[i]; if(eq.enabled){ this.equations.push(eq); } } }; /** * Remove an equation. * * @method removeEquation * @param {Equation} eq */ Solver.prototype.removeEquation = function(eq){ var i = this.equations.indexOf(eq); if(i !== -1){ this.equations.splice(i,1); } }; /** * Remove all currently added equations. * * @method removeAllEquations */ Solver.prototype.removeAllEquations = function(){ this.equations.length=0; }; Solver.GS = 1; Solver.ISLAND = 2; },{"../events/EventEmitter":27,"../utils/Utils":50,"__browserify_Buffer":1,"__browserify_process":2}],48:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/utils\\OverlapKeeper.js",__dirname="/utils";var TupleDictionary = require('./TupleDictionary'); var Utils = require('./Utils'); module.exports = OverlapKeeper; /** * Keeps track of overlaps in the current state and the last step state. * @class OverlapKeeper * @constructor */ function OverlapKeeper() { this.overlappingShapesLastState = new TupleDictionary(); this.overlappingShapesCurrentState = new TupleDictionary(); this.recordPool = []; this.tmpDict = new TupleDictionary(); this.tmpArray1 = []; } /** * Ticks one step forward in time. This will move the current overlap state to the "old" overlap state, and create a new one as current. * @method tick */ OverlapKeeper.prototype.tick = function() { var last = this.overlappingShapesLastState; var current = this.overlappingShapesCurrentState; // Save old objects into pool var l = last.keys.length; while(l--){ var key = last.keys[l]; var lastObject = last.getByKey(key); var currentObject = current.getByKey(key); if(lastObject && !currentObject){ // The record is only used in the "last" dict, and will be removed. We might as well pool it. this.recordPool.push(lastObject); } } // Clear last object last.reset(); // Transfer from new object to old last.copy(current); // Clear current object current.reset(); }; /** * @method setOverlapping * @param {Body} bodyA * @param {Body} shapeA * @param {Body} bodyB * @param {Body} shapeB */ OverlapKeeper.prototype.setOverlapping = function(bodyA, shapeA, bodyB, shapeB) { var last = this.overlappingShapesLastState; var current = this.overlappingShapesCurrentState; // Store current contact state if(!current.get(shapeA.id, shapeB.id)){ var data; if(this.recordPool.length){ data = this.recordPool.pop(); data.set(bodyA, shapeA, bodyB, shapeB); } else { data = new OverlapKeeperRecord(bodyA, shapeA, bodyB, shapeB); } current.set(shapeA.id, shapeB.id, data); } }; OverlapKeeper.prototype.getNewOverlaps = function(result){ return this.getDiff(this.overlappingShapesLastState, this.overlappingShapesCurrentState, result); }; OverlapKeeper.prototype.getEndOverlaps = function(result){ return this.getDiff(this.overlappingShapesCurrentState, this.overlappingShapesLastState, result); }; /** * Checks if two bodies are currently overlapping. * @method bodiesAreOverlapping * @param {Body} bodyA * @param {Body} bodyB * @return {boolean} */ OverlapKeeper.prototype.bodiesAreOverlapping = function(bodyA, bodyB){ var current = this.overlappingShapesCurrentState; var l = current.keys.length; while(l--){ var key = current.keys[l]; var data = current.data[key]; if((data.bodyA === bodyA && data.bodyB === bodyB) || data.bodyA === bodyB && data.bodyB === bodyA){ return true; } } return false; }; OverlapKeeper.prototype.getDiff = function(dictA, dictB, result){ var result = result || []; var last = dictA; var current = dictB; result.length = 0; var l = current.keys.length; while(l--){ var key = current.keys[l]; var data = current.data[key]; if(!data){ throw new Error('Key '+key+' had no data!'); } var lastData = last.data[key]; if(!lastData){ // Not overlapping in last state, but in current. result.push(data); } } return result; }; OverlapKeeper.prototype.isNewOverlap = function(shapeA, shapeB){ var idA = shapeA.id|0, idB = shapeB.id|0; var last = this.overlappingShapesLastState; var current = this.overlappingShapesCurrentState; // Not in last but in new return !!!last.get(idA, idB) && !!current.get(idA, idB); }; OverlapKeeper.prototype.getNewBodyOverlaps = function(result){ this.tmpArray1.length = 0; var overlaps = this.getNewOverlaps(this.tmpArray1); return this.getBodyDiff(overlaps, result); }; OverlapKeeper.prototype.getEndBodyOverlaps = function(result){ this.tmpArray1.length = 0; var overlaps = this.getEndOverlaps(this.tmpArray1); return this.getBodyDiff(overlaps, result); }; OverlapKeeper.prototype.getBodyDiff = function(overlaps, result){ result = result || []; var accumulator = this.tmpDict; var l = overlaps.length; while(l--){ var data = overlaps[l]; // Since we use body id's for the accumulator, these will be a subset of the original one accumulator.set(data.bodyA.id|0, data.bodyB.id|0, data); } l = accumulator.keys.length; while(l--){ var data = accumulator.getByKey(accumulator.keys[l]); if(data){ result.push(data.bodyA, data.bodyB); } } accumulator.reset(); return result; }; /** * Overlap data container for the OverlapKeeper * @class OverlapKeeperRecord * @constructor * @param {Body} bodyA * @param {Shape} shapeA * @param {Body} bodyB * @param {Shape} shapeB */ function OverlapKeeperRecord(bodyA, shapeA, bodyB, shapeB){ /** * @property {Shape} shapeA */ this.shapeA = shapeA; /** * @property {Shape} shapeB */ this.shapeB = shapeB; /** * @property {Body} bodyA */ this.bodyA = bodyA; /** * @property {Body} bodyB */ this.bodyB = bodyB; } /** * Set the data for the record * @method set * @param {Body} bodyA * @param {Shape} shapeA * @param {Body} bodyB * @param {Shape} shapeB */ OverlapKeeperRecord.prototype.set = function(bodyA, shapeA, bodyB, shapeB){ OverlapKeeperRecord.call(this, bodyA, shapeA, bodyB, shapeB); }; },{"./TupleDictionary":49,"./Utils":50,"__browserify_Buffer":1,"__browserify_process":2}],49:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/utils\\TupleDictionary.js",__dirname="/utils";var Utils = require('./Utils'); module.exports = TupleDictionary; /** * @class TupleDictionary * @constructor */ function TupleDictionary() { /** * The data storage * @property data * @type {Object} */ this.data = {}; /** * Keys that are currently used. * @property {Array} keys */ this.keys = []; } /** * Generate a key given two integers * @method getKey * @param {number} i * @param {number} j * @return {string} */ TupleDictionary.prototype.getKey = function(id1, id2) { id1 = id1|0; id2 = id2|0; if ( (id1|0) === (id2|0) ){ return -1; } // valid for values < 2^16 return ((id1|0) > (id2|0) ? (id1 << 16) | (id2 & 0xFFFF) : (id2 << 16) | (id1 & 0xFFFF))|0 ; }; /** * @method getByKey * @param {Number} key * @return {Object} */ TupleDictionary.prototype.getByKey = function(key) { key = key|0; return this.data[key]; }; /** * @method get * @param {Number} i * @param {Number} j * @return {Number} */ TupleDictionary.prototype.get = function(i, j) { return this.data[this.getKey(i, j)]; }; /** * Set a value. * @method set * @param {Number} i * @param {Number} j * @param {Number} value */ TupleDictionary.prototype.set = function(i, j, value) { if(!value){ throw new Error("No data!"); } var key = this.getKey(i, j); // Check if key already exists if(!this.data[key]){ this.keys.push(key); } this.data[key] = value; return key; }; /** * Remove all data. * @method reset */ TupleDictionary.prototype.reset = function() { var data = this.data, keys = this.keys; var l = keys.length; while(l--) { delete data[keys[l]]; } keys.length = 0; }; /** * Copy another TupleDictionary. Note that all data in this dictionary will be removed. * @method copy * @param {TupleDictionary} dict The TupleDictionary to copy into this one. */ TupleDictionary.prototype.copy = function(dict) { this.reset(); Utils.appendArray(this.keys, dict.keys); var l = dict.keys.length; while(l--){ var key = dict.keys[l]; this.data[key] = dict.data[key]; } }; },{"./Utils":50,"__browserify_Buffer":1,"__browserify_process":2}],50:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/utils\\Utils.js",__dirname="/utils";module.exports = Utils; /** * Misc utility functions * @class Utils * @constructor */ function Utils(){}; /** * Append the values in array b to the array a. See this for an explanation. * @method appendArray * @static * @param {Array} a * @param {Array} b */ Utils.appendArray = function(a,b){ if (b.length < 150000) { a.push.apply(a, b); } else { for (var i = 0, len = b.length; i !== len; ++i) { a.push(b[i]); } } }; /** * Garbage free Array.splice(). Does not allocate a new array. * @method splice * @static * @param {Array} array * @param {Number} index * @param {Number} howmany */ Utils.splice = function(array,index,howmany){ howmany = howmany || 1; for (var i=index, len=array.length-howmany; i < len; i++){ array[i] = array[i + howmany]; } array.length = len; }; /** * The array type to use for internal numeric computations. * @type {Array} * @static * @property ARRAY_TYPE */ Utils.ARRAY_TYPE = window.Float32Array || Array; /** * Extend an object with the properties of another * @static * @method extend * @param {object} a * @param {object} b */ Utils.extend = function(a,b){ for(var key in b){ a[key] = b[key]; } }; /** * Extend an object with the properties of another * @static * @method extend * @param {object} a * @param {object} b */ Utils.defaults = function(options, defaults){ options = options || {}; for(var key in defaults){ if(!(key in options)){ options[key] = defaults[key]; } } return options; }; },{"__browserify_Buffer":1,"__browserify_process":2}],51:[function(require,module,exports){ var process=require("__browserify_process"),global=typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},Buffer=require("__browserify_Buffer"),__filename="/world\\Island.js",__dirname="/world";var Body = require('../objects/Body'); module.exports = Island; /** * An island of bodies connected with equations. * @class Island * @constructor */ function Island(){ /** * Current equations in this island. * @property equations * @type {Array} */ this.equations = []; /** * Current bodies in this island. * @property bodies * @type {Array} */ this.bodies = []; } /** * Clean this island from bodies and equations. * @method reset */ Island.prototype.reset = function(){ this.equations.length = this.bodies.length = 0; }; var bodyIds = []; /** * Get all unique bodies in this island. * @method getBodies * @return {Array} An array of Body */ Island.prototype.getBodies = function(result){ var bodies = result || [], eqs = this.equations; bodyIds.length = 0; for(var i=0; i!==eqs.length; i++){ var eq = eqs[i]; if(bodyIds.indexOf(eq.bodyA.id)===-1){ bodies.push(eq.bodyA); bodyIds.push(eq.bodyA.id); } if(bodyIds.indexOf(eq.bodyB.id)===-1){ bodies.push(eq.bodyB); bodyIds.push(eq.bodyB.id); } } return bodies; }; /** * Check if the entire island wants to sleep. * @method wantsToSleep * @return {Boolean} */ Island.prototype.wantsToSleep = function(){ for(var i=0; i dt*1000){ // We are slower than real-time. Better bail out. break; } } // Increment internal clock this.time += timeSinceLastCalled; // Compute "Left over" time step var h = this.time % dt; var h_div_dt = h/dt; for(var j=0; j!==this.bodies.length; j++){ var b = this.bodies[j]; if(b.type !== Body.STATIC && b.sleepState !== Body.SLEEPING){ // Interpolate vec2.sub(interpvelo, b.position, b.previousPosition); vec2.scale(interpvelo, interpvelo, h_div_dt); vec2.add(b.interpolatedPosition, b.position, interpvelo); b.interpolatedAngle = b.angle + (b.angle - b.previousAngle) * h_div_dt; } else { // For static bodies, just copy. Who else will do it? vec2.copy(b.interpolatedPosition, b.position); b.interpolatedAngle = b.angle; } } } }; var endOverlaps = []; /** * Make a fixed step. * @method internalStep * @param {number} dt * @private */ World.prototype.internalStep = function(dt){ this.stepping = true; var that = this, doProfiling = this.doProfiling, Nsprings = this.springs.length, springs = this.springs, bodies = this.bodies, g = this.gravity, solver = this.solver, Nbodies = this.bodies.length, broadphase = this.broadphase, np = this.narrowphase, constraints = this.constraints, t0, t1, fhMinv = step_fhMinv, velodt = step_velodt, mg = step_mg, scale = vec2.scale, add = vec2.add, rotate = vec2.rotate, islandManager = this.islandManager; this.overlapKeeper.tick(); this.lastTimeStep = dt; if(doProfiling){ t0 = performance.now(); } // Update approximate friction gravity. if(this.useWorldGravityAsFrictionGravity){ var gravityLen = vec2.length(this.gravity); if(!(gravityLen === 0 && this.useFrictionGravityOnZeroGravity)){ // Nonzero gravity. Use it. this.frictionGravity = gravityLen; } } // Add gravity to bodies if(this.applyGravity){ for(var i=0; i!==Nbodies; i++){ var b = bodies[i], fi = b.force; if(b.type !== Body.DYNAMIC || b.sleepState === Body.SLEEPING){ continue; } vec2.scale(mg,g,b.mass*b.gravityScale); // F=m*g add(fi,fi,mg); } } // Add spring forces if(this.applySpringForces){ for(var i=0; i!==Nsprings; i++){ var s = springs[i]; s.applyForce(); } } if(this.applyDamping){ for(var i=0; i!==Nbodies; i++){ var b = bodies[i]; if(b.type === Body.DYNAMIC){ b.applyDamping(dt); } } } // Broadphase var result = broadphase.getCollisionPairs(this); // Remove ignored collision pairs var ignoredPairs = this.disabledBodyCollisionPairs; for(var i=ignoredPairs.length-2; i>=0; i-=2){ for(var j=result.length-2; j>=0; j-=2){ if( (ignoredPairs[i] === result[j] && ignoredPairs[i+1] === result[j+1]) || (ignoredPairs[i+1] === result[j] && ignoredPairs[i] === result[j+1])){ result.splice(j,2); } } } // Remove constrained pairs with collideConnected == false var Nconstraints = constraints.length; for(i=0; i!==Nconstraints; i++){ var c = constraints[i]; if(!c.collideConnected){ for(var j=result.length-2; j>=0; j-=2){ if( (c.bodyA === result[j] && c.bodyB === result[j+1]) || (c.bodyB === result[j] && c.bodyA === result[j+1])){ result.splice(j,2); } } } } // postBroadphase event this.postBroadphaseEvent.pairs = result; this.emit(this.postBroadphaseEvent); // Narrowphase np.reset(this); for(var i=0, Nresults=result.length; i!==Nresults; i+=2){ var bi = result[i], bj = result[i+1]; // Loop over all shapes of body i for(var k=0, Nshapesi=bi.shapes.length; k!==Nshapesi; k++){ var si = bi.shapes[k], xi = bi.shapeOffsets[k], ai = bi.shapeAngles[k]; // All shapes of body j for(var l=0, Nshapesj=bj.shapes.length; l!==Nshapesj; l++){ var sj = bj.shapes[l], xj = bj.shapeOffsets[l], aj = bj.shapeAngles[l]; var cm = this.defaultContactMaterial; if(si.material && sj.material){ var tmp = this.getContactMaterial(si.material,sj.material); if(tmp){ cm = tmp; } } this.runNarrowphase(np,bi,si,xi,ai,bj,sj,xj,aj,cm,this.frictionGravity); } } } // Wake up bodies for(var i=0; i!==Nbodies; i++){ var body = bodies[i]; if(body._wakeUpAfterNarrowphase){ body.wakeUp(); body._wakeUpAfterNarrowphase = false; } } // Emit end overlap events if(this.has('endContact')){ this.overlapKeeper.getEndOverlaps(endOverlaps); var e = this.endContactEvent; var l = endOverlaps.length; while(l--){ var data = endOverlaps[l]; e.shapeA = data.shapeA; e.shapeB = data.shapeB; e.bodyA = data.bodyA; e.bodyB = data.bodyB; this.emit(e); } } var preSolveEvent = this.preSolveEvent; preSolveEvent.contactEquations = np.contactEquations; preSolveEvent.frictionEquations = np.frictionEquations; this.emit(preSolveEvent); // update constraint equations var Nconstraints = constraints.length; for(i=0; i!==Nconstraints; i++){ constraints[i].update(); } if(np.contactEquations.length || np.frictionEquations.length || constraints.length){ if(this.islandSplit){ // Split into islands islandManager.equations.length = 0; Utils.appendArray(islandManager.equations, np.contactEquations); Utils.appendArray(islandManager.equations, np.frictionEquations); for(i=0; i!==Nconstraints; i++){ Utils.appendArray(islandManager.equations, constraints[i].equations); } islandManager.split(this); for(var i=0; i!==islandManager.islands.length; i++){ var island = islandManager.islands[i]; if(island.equations.length){ solver.solveIsland(dt,island); } } } else { // Add contact equations to solver solver.addEquations(np.contactEquations); solver.addEquations(np.frictionEquations); // Add user-defined constraint equations for(i=0; i!==Nconstraints; i++){ solver.addEquations(constraints[i].equations); } if(this.solveConstraints){ solver.solve(dt,this); } solver.removeAllEquations(); } } // Step forward for(var i=0; i!==Nbodies; i++){ var body = bodies[i]; if(body.sleepState !== Body.SLEEPING && body.type !== Body.STATIC){ World.integrateBody(body,dt); } } // Reset force for(var i=0; i!==Nbodies; i++){ bodies[i].setZeroForce(); } if(doProfiling){ t1 = performance.now(); that.lastStepTime = t1-t0; } // Emit impact event if(this.emitImpactEvent && this.has('impact')){ var ev = this.impactEvent; for(var i=0; i!==np.contactEquations.length; i++){ var eq = np.contactEquations[i]; if(eq.firstImpact){ ev.bodyA = eq.bodyA; ev.bodyB = eq.bodyB; ev.shapeA = eq.shapeA; ev.shapeB = eq.shapeB; ev.contactEquation = eq; this.emit(ev); } } } // Sleeping update if(this.sleepMode === World.BODY_SLEEPING){ for(i=0; i!==Nbodies; i++){ bodies[i].sleepTick(this.time, false, dt); } } else if(this.sleepMode === World.ISLAND_SLEEPING && this.islandSplit){ // Tell all bodies to sleep tick but dont sleep yet for(i=0; i!==Nbodies; i++){ bodies[i].sleepTick(this.time, true, dt); } // Sleep islands for(var i=0; i 0; np.frictionCoefficient = cm.friction; var reducedMass; if(bi.type === Body.STATIC || bi.type === Body.KINEMATIC){ reducedMass = bj.mass; } else if(bj.type === Body.STATIC || bj.type === Body.KINEMATIC){ reducedMass = bi.mass; } else { reducedMass = (bi.mass*bj.mass)/(bi.mass+bj.mass); } np.slipForce = cm.friction*glen*reducedMass; np.restitution = cm.restitution; np.surfaceVelocity = cm.surfaceVelocity; np.frictionStiffness = cm.frictionStiffness; np.frictionRelaxation = cm.frictionRelaxation; np.stiffness = cm.stiffness; np.relaxation = cm.relaxation; np.contactSkinSize = cm.contactSkinSize; var resolver = np[si.type | sj.type], numContacts = 0; if (resolver) { var sensor = si.sensor || sj.sensor; var numFrictionBefore = np.frictionEquations.length; if (si.type < sj.type) { numContacts = resolver.call(np, bi,si,xiw,aiw, bj,sj,xjw,ajw, sensor); } else { numContacts = resolver.call(np, bj,sj,xjw,ajw, bi,si,xiw,aiw, sensor); } var numFrictionEquations = np.frictionEquations.length - numFrictionBefore; if(numContacts){ if( bi.allowSleep && bi.type === Body.DYNAMIC && bi.sleepState === Body.SLEEPING && bj.sleepState === Body.AWAKE && bj.type !== Body.STATIC ){ var speedSquaredB = vec2.squaredLength(bj.velocity) + Math.pow(bj.angularVelocity,2); var speedLimitSquaredB = Math.pow(bj.sleepSpeedLimit,2); if(speedSquaredB >= speedLimitSquaredB*2){ bi._wakeUpAfterNarrowphase = true; } } if( bj.allowSleep && bj.type === Body.DYNAMIC && bj.sleepState === Body.SLEEPING && bi.sleepState === Body.AWAKE && bi.type !== Body.STATIC ){ var speedSquaredA = vec2.squaredLength(bi.velocity) + Math.pow(bi.angularVelocity,2); var speedLimitSquaredA = Math.pow(bi.sleepSpeedLimit,2); if(speedSquaredA >= speedLimitSquaredA*2){ bj._wakeUpAfterNarrowphase = true; } } this.overlapKeeper.setOverlapping(bi, si, bj, sj); if(this.has('beginContact') && this.overlapKeeper.isNewOverlap(si, sj)){ // Report new shape overlap var e = this.beginContactEvent; e.shapeA = si; e.shapeB = sj; e.bodyA = bi; e.bodyB = bj; // Reset contact equations e.contactEquations.length = 0; if(typeof(numContacts)==="number"){ for(var i=np.contactEquations.length-numContacts; i 1){ // Why divide by 1? for(var i=np.frictionEquations.length-numFrictionEquations; i=0; i--){ this.removeConstraint(cs[i]); } // Remove all bodies var bodies = this.bodies; for(var i=bodies.length-1; i>=0; i--){ this.removeBody(bodies[i]); } // Remove all springs var springs = this.springs; for(var i=springs.length-1; i>=0; i--){ this.removeSpring(springs[i]); } // Remove all contact materials var cms = this.contactMaterials; for(var i=cms.length-1; i>=0; i--){ this.removeContactMaterial(cms[i]); } World.apply(this); }; /** * Get a copy of this World instance * @method clone * @return {World} */ World.prototype.clone = function(){ var world = new World(); world.fromJSON(this.toJSON()); return world; }; var hitTest_tmp1 = vec2.create(), hitTest_zero = vec2.fromValues(0,0), hitTest_tmp2 = vec2.fromValues(0,0); /** * Test if a world point overlaps bodies * @method hitTest * @param {Array} worldPoint Point to use for intersection tests * @param {Array} bodies A list of objects to check for intersection * @param {Number} precision Used for matching against particles and lines. Adds some margin to these infinitesimal objects. * @return {Array} Array of bodies that overlap the point */ World.prototype.hitTest = function(worldPoint,bodies,precision){ precision = precision || 0; // Create a dummy particle body with a particle shape to test against the bodies var pb = new Body({ position:worldPoint }), ps = new Particle(), px = worldPoint, pa = 0, x = hitTest_tmp1, zero = hitTest_zero, tmp = hitTest_tmp2; pb.addShape(ps); var n = this.narrowphase, result = []; // Check bodies for(var i=0, N=bodies.length; i!==N; i++){ var b = bodies[i]; for(var j=0, NS=b.shapes.length; j!==NS; j++){ var s = b.shapes[j], offset = b.shapeOffsets[j] || zero, angle = b.shapeAngles[j] || 0.0; // Get shape world position + angle vec2.rotate(x, offset, b.angle); vec2.add(x, x, b.position); var a = angle + b.angle; if( (s instanceof Circle && n.circleParticle (b,s,x,a, pb,ps,px,pa, true)) || (s instanceof Convex && n.particleConvex (pb,ps,px,pa, b,s,x,a, true)) || (s instanceof Plane && n.particlePlane (pb,ps,px,pa, b,s,x,a, true)) || (s instanceof Capsule && n.particleCapsule (pb,ps,px,pa, b,s,x,a, true)) || (s instanceof Particle && vec2.squaredLength(vec2.sub(tmp,x,worldPoint)) < precision*precision) ){ result.push(b); } } } return result; }; /** * Sets the Equation parameters for all constraints and contact materials. * @method setGlobalEquationParameters * @param {object} [parameters] * @param {Number} [parameters.relaxation] * @param {Number} [parameters.stiffness] */ World.prototype.setGlobalEquationParameters = function(parameters){ parameters = parameters || {}; // Set for all constraints for(var i=0; i !== this.constraints.length; i++){ var c = this.constraints[i]; for(var j=0; j !== c.equations.length; j++){ var eq = c.equations[j]; if(typeof(parameters.stiffness) !== "undefined"){ eq.stiffness = parameters.stiffness; } if(typeof(parameters.relaxation) !== "undefined"){ eq.relaxation = parameters.relaxation; } eq.needsUpdate = true; } } // Set for all contact materials for(var i=0; i !== this.contactMaterials.length; i++){ var c = this.contactMaterials[i]; if(typeof(parameters.stiffness) !== "undefined"){ c.stiffness = parameters.stiffness; c.frictionStiffness = parameters.stiffness; } if(typeof(parameters.relaxation) !== "undefined"){ c.relaxation = parameters.relaxation; c.frictionRelaxation = parameters.relaxation; } } // Set for default contact material var c = this.defaultContactMaterial; if(typeof(parameters.stiffness) !== "undefined"){ c.stiffness = parameters.stiffness; c.frictionStiffness = parameters.stiffness; } if(typeof(parameters.relaxation) !== "undefined"){ c.relaxation = parameters.relaxation; c.frictionRelaxation = parameters.relaxation; } }; /** * Set the stiffness for all equations and contact materials. * @method setGlobalStiffness * @param {Number} stiffness */ World.prototype.setGlobalStiffness = function(stiffness){ this.setGlobalEquationParameters({ stiffness: stiffness }); }; /** * Set the relaxation for all equations and contact materials. * @method setGlobalRelaxation * @param {Number} relaxation */ World.prototype.setGlobalRelaxation = function(relaxation){ this.setGlobalEquationParameters({ relaxation: relaxation }); }; },{"../../package.json":8,"../collision/Broadphase":10,"../collision/NaiveBroadphase":12,"../collision/Narrowphase":13,"../collision/SAPBroadphase":14,"../constraints/Constraint":15,"../constraints/DistanceConstraint":16,"../constraints/GearConstraint":17,"../constraints/LockConstraint":18,"../constraints/PrismaticConstraint":19,"../constraints/RevoluteConstraint":20,"../events/EventEmitter":27,"../material/ContactMaterial":28,"../material/Material":29,"../math/vec2":31,"../objects/Body":32,"../objects/LinearSpring":33,"../objects/RotationalSpring":34,"../shapes/Capsule":37,"../shapes/Circle":38,"../shapes/Convex":39,"../shapes/Line":41,"../shapes/Particle":42,"../shapes/Plane":43,"../shapes/Rectangle":44,"../shapes/Shape":45,"../solver/GSSolver":46,"../solver/Solver":47,"../utils/OverlapKeeper":48,"../utils/Utils":50,"./IslandManager":52,"__browserify_Buffer":1,"__browserify_process":2}]},{},[36]) (36) }); ;; /** * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ // Add an extra properties to p2 that we need p2.Body.prototype.parent = null; p2.Spring.prototype.parent = null; /** * This is your main access to the P2 Physics World. * From here you can create materials, listen for events and add bodies into the physics simulation. * * @class Phaser.Physics.P2 * @constructor * @param {Phaser.Game} game - Reference to the current game instance. * @param {object} [config] - Physics configuration object passed in from the game constructor. */ Phaser.Physics.P2 = function (game, config) { /** * @property {Phaser.Game} game - Local reference to game. */ this.game = game; if (typeof config === 'undefined' || !config.hasOwnProperty('gravity') || !config.hasOwnProperty('broadphase')) { config = { gravity: [0, 0], broadphase: new p2.SAPBroadphase() }; } /** * @property {object} config - The p2 World configuration object. * @protected */ this.config = config; /** * @property {p2.World} world - The p2 World in which the simulation is run. * @protected */ this.world = new p2.World(this.config); /** * @property {number} frameRate - The frame rate the world will be stepped at. Defaults to 1 / 60, but you can change here. Also see useElapsedTime property. * @default */ this.frameRate = 1 / 60; /** * @property {boolean} useElapsedTime - If true the frameRate value will be ignored and instead p2 will step with the value of Game.Time.physicsElapsed, which is a delta time value. * @default */ this.useElapsedTime = false; /** * @property {boolean} paused - The paused state of the P2 World. * @default */ this.paused = false; /** * @property {array} materials - A local array of all created Materials. * @protected */ this.materials = []; /** * @property {Phaser.Physics.P2.InversePointProxy} gravity - The gravity applied to all bodies each step. */ this.gravity = new Phaser.Physics.P2.InversePointProxy(this, this.world.gravity); /** * @property {object} walls - An object containing the 4 wall bodies that bound the physics world. */ this.walls = { left: null, right: null, top: null, bottom: null }; /** * @property {Phaser.Signal} onBodyAdded - Dispatched when a new Body is added to the World. */ this.onBodyAdded = new Phaser.Signal(); /** * @property {Phaser.Signal} onBodyRemoved - Dispatched when a Body is removed from the World. */ this.onBodyRemoved = new Phaser.Signal(); /** * @property {Phaser.Signal} onSpringAdded - Dispatched when a new Spring is added to the World. */ this.onSpringAdded = new Phaser.Signal(); /** * @property {Phaser.Signal} onSpringRemoved - Dispatched when a Spring is removed from the World. */ this.onSpringRemoved = new Phaser.Signal(); /** * @property {Phaser.Signal} onConstraintAdded - Dispatched when a new Constraint is added to the World. */ this.onConstraintAdded = new Phaser.Signal(); /** * @property {Phaser.Signal} onConstraintRemoved - Dispatched when a Constraint is removed from the World. */ this.onConstraintRemoved = new Phaser.Signal(); /** * @property {Phaser.Signal} onContactMaterialAdded - Dispatched when a new ContactMaterial is added to the World. */ this.onContactMaterialAdded = new Phaser.Signal(); /** * @property {Phaser.Signal} onContactMaterialRemoved - Dispatched when a ContactMaterial is removed from the World. */ this.onContactMaterialRemoved = new Phaser.Signal(); /** * @property {function} postBroadphaseCallback - A postBroadphase callback. */ this.postBroadphaseCallback = null; /** * @property {object} callbackContext - The context under which the callbacks are fired. */ this.callbackContext = null; /** * @property {Phaser.Signal} onBeginContact - Dispatched when a first contact is created between two bodies. This event is fired before the step has been done. */ this.onBeginContact = new Phaser.Signal(); /** * @property {Phaser.Signal} onEndContact - Dispatched when final contact occurs between two bodies. This event is fired before the step has been done. */ this.onEndContact = new Phaser.Signal(); // Pixel to meter function overrides if (config.hasOwnProperty('mpx') && config.hasOwnProperty('pxm') && config.hasOwnProperty('mpxi') && config.hasOwnProperty('pxmi')) { this.mpx = config.mpx; this.mpxi = config.mpxi; this.pxm = config.pxm; this.pxmi = config.pxmi; } // Hook into the World events this.world.on("beginContact", this.beginContactHandler, this); this.world.on("endContact", this.endContactHandler, this); /** * @property {array} collisionGroups - An array containing the collision groups that have been defined in the World. */ this.collisionGroups = []; /** * @property {Phaser.Physics.P2.CollisionGroup} nothingCollisionGroup - A default collision group. */ this.nothingCollisionGroup = new Phaser.Physics.P2.CollisionGroup(1); /** * @property {Phaser.Physics.P2.CollisionGroup} boundsCollisionGroup - A default collision group. */ this.boundsCollisionGroup = new Phaser.Physics.P2.CollisionGroup(2); /** * @property {Phaser.Physics.P2.CollisionGroup} everythingCollisionGroup - A default collision group. */ this.everythingCollisionGroup = new Phaser.Physics.P2.CollisionGroup(2147483648); /** * @property {array} boundsCollidesWith - An array of the bodies the world bounds collides with. */ this.boundsCollidesWith = []; /** * @property {array} _toRemove - Internal var used to hold references to bodies to remove from the world on the next step. * @private */ this._toRemove = []; /** * @property {number} _collisionGroupID - Internal var. * @private */ this._collisionGroupID = 2; // By default we want everything colliding with everything this.setBoundsToWorld(true, true, true, true, false); }; Phaser.Physics.P2.prototype = { /** * This will add a P2 Physics body into the removal list for the next step. * * @method Phaser.Physics.P2#removeBodyNextStep * @param {Phaser.Physics.P2.Body} body - The body to remove at the start of the next step. */ removeBodyNextStep: function (body) { this._toRemove.push(body); }, /** * Called at the start of the core update loop. Purges flagged bodies from the world. * * @method Phaser.Physics.P2#preUpdate */ preUpdate: function () { var i = this._toRemove.length; while (i--) { this.removeBody(this._toRemove[i]); } this._toRemove.length = 0; }, /** * This will create a P2 Physics body on the given game object or array of game objects. * A game object can only have 1 physics body active at any one time, and it can't be changed until the object is destroyed. * Note: When the game object is enabled for P2 physics it has its anchor x/y set to 0.5 so it becomes centered. * * @method Phaser.Physics.P2#enable * @param {object|array|Phaser.Group} object - The game object to create the physics body on. Can also be an array or Group of objects, a body will be created on every child that has a `body` property. * @param {boolean} [debug=false] - Create a debug object to go with this body? * @param {boolean} [children=true] - Should a body be created on all children of this object? If true it will recurse down the display list as far as it can go. */ enable: function (object, debug, children) { if (typeof debug === 'undefined') { debug = false; } if (typeof children === 'undefined') { children = true; } var i = 1; if (Array.isArray(object)) { i = object.length; while (i--) { if (object[i] instanceof Phaser.Group) { // If it's a Group then we do it on the children regardless this.enable(object[i].children, debug, children); } else { this.enableBody(object[i], debug); if (children && object[i].hasOwnProperty('children') && object[i].children.length > 0) { this.enable(object[i], debug, true); } } } } else { if (object instanceof Phaser.Group) { // If it's a Group then we do it on the children regardless this.enable(object.children, debug, children); } else { this.enableBody(object, debug); if (children && object.hasOwnProperty('children') && object.children.length > 0) { this.enable(object.children, debug, true); } } } }, /** * Creates a P2 Physics body on the given game object. * A game object can only have 1 physics body active at any one time, and it can't be changed until the body is nulled. * * @method Phaser.Physics.P2#enableBody * @param {object} object - The game object to create the physics body on. A body will only be created if this object has a null `body` property. * @param {boolean} debug - Create a debug object to go with this body? */ enableBody: function (object, debug) { if (object.hasOwnProperty('body') && object.body === null) { object.body = new Phaser.Physics.P2.Body(this.game, object, object.x, object.y, 1); object.body.debug = debug; object.anchor.set(0.5); } }, /** * Impact event handling is disabled by default. Enable it before any impact events will be dispatched. * In a busy world hundreds of impact events can be generated every step, so only enable this if you cannot do what you need via beginContact or collision masks. * * @method Phaser.Physics.P2#setImpactEvents * @param {boolean} state - Set to true to enable impact events, or false to disable. */ setImpactEvents: function (state) { if (state) { this.world.on("impact", this.impactHandler, this); } else { this.world.off("impact", this.impactHandler, this); } }, /** * Sets a callback to be fired after the Broadphase has collected collision pairs in the world. * Just because a pair exists it doesn't mean they *will* collide, just that they potentially could do. * If your calback returns `false` the pair will be removed from the narrowphase. This will stop them testing for collision this step. * Returning `true` from the callback will ensure they are checked in the narrowphase. * * @method Phaser.Physics.P2#setPostBroadphaseCallback * @param {function} callback - The callback that will receive the postBroadphase event data. It must return a boolean. Set to null to disable an existing callback. * @param {object} context - The context under which the callback will be fired. */ setPostBroadphaseCallback: function (callback, context) { this.postBroadphaseCallback = callback; this.callbackContext = context; if (callback !== null) { this.world.on("postBroadphase", this.postBroadphaseHandler, this); } else { this.world.off("postBroadphase", this.postBroadphaseHandler, this); } }, /** * Internal handler for the postBroadphase event. * * @method Phaser.Physics.P2#postBroadphaseHandler * @private * @param {object} event - The event data. */ postBroadphaseHandler: function (event) { var i = event.pairs.length; if (this.postBroadphaseCallback && i > 0) { while (i -= 2) { if (event.pairs[i].parent && event.pairs[i+1].parent && !this.postBroadphaseCallback.call(this.callbackContext, event.pairs[i].parent, event.pairs[i+1].parent)) { event.pairs.splice(i, 2); } } } }, /** * Handles a p2 impact event. * * @method Phaser.Physics.P2#impactHandler * @private * @param {object} event - The event data. */ impactHandler: function (event) { if (event.bodyA.parent && event.bodyB.parent) { // Body vs. Body callbacks var a = event.bodyA.parent; var b = event.bodyB.parent; if (a._bodyCallbacks[event.bodyB.id]) { a._bodyCallbacks[event.bodyB.id].call(a._bodyCallbackContext[event.bodyB.id], a, b, event.shapeA, event.shapeB); } if (b._bodyCallbacks[event.bodyA.id]) { b._bodyCallbacks[event.bodyA.id].call(b._bodyCallbackContext[event.bodyA.id], b, a, event.shapeB, event.shapeA); } // Body vs. Group callbacks if (a._groupCallbacks[event.shapeB.collisionGroup]) { a._groupCallbacks[event.shapeB.collisionGroup].call(a._groupCallbackContext[event.shapeB.collisionGroup], a, b, event.shapeA, event.shapeB); } if (b._groupCallbacks[event.shapeA.collisionGroup]) { b._groupCallbacks[event.shapeA.collisionGroup].call(b._groupCallbackContext[event.shapeA.collisionGroup], b, a, event.shapeB, event.shapeA); } } }, /** * Handles a p2 begin contact event. * * @method Phaser.Physics.P2#beginContactHandler * @param {object} event - The event data. */ beginContactHandler: function (event) { this.onBeginContact.dispatch(event.bodyA, event.bodyB, event.shapeA, event.shapeB, event.contactEquations); if (event.bodyA.parent) { event.bodyA.parent.onBeginContact.dispatch(event.bodyB.parent, event.shapeA, event.shapeB, event.contactEquations); } if (event.bodyB.parent) { event.bodyB.parent.onBeginContact.dispatch(event.bodyA.parent, event.shapeB, event.shapeA, event.contactEquations); } }, /** * Handles a p2 end contact event. * * @method Phaser.Physics.P2#endContactHandler * @param {object} event - The event data. */ endContactHandler: function (event) { this.onEndContact.dispatch(event.bodyA, event.bodyB, event.shapeA, event.shapeB); if (event.bodyA.parent) { event.bodyA.parent.onEndContact.dispatch(event.bodyB.parent, event.shapeA, event.shapeB); } if (event.bodyB.parent) { event.bodyB.parent.onEndContact.dispatch(event.bodyA.parent, event.shapeB, event.shapeA); } }, /** * Sets the bounds of the Physics world to match the Game.World dimensions. * You can optionally set which 'walls' to create: left, right, top or bottom. * * @method Phaser.Physics#setBoundsToWorld * @param {boolean} [left=true] - If true will create the left bounds wall. * @param {boolean} [right=true] - If true will create the right bounds wall. * @param {boolean} [top=true] - If true will create the top bounds wall. * @param {boolean} [bottom=true] - If true will create the bottom bounds wall. * @param {boolean} [setCollisionGroup=true] - If true the Bounds will be set to use its own Collision Group. */ setBoundsToWorld: function (left, right, top, bottom, setCollisionGroup) { this.setBounds(this.game.world.bounds.x, this.game.world.bounds.y, this.game.world.bounds.width, this.game.world.bounds.height, left, right, top, bottom, setCollisionGroup); }, /** * Sets the given material against the 4 bounds of this World. * * @method Phaser.Physics#setWorldMaterial * @param {Phaser.Physics.P2.Material} material - The material to set. * @param {boolean} [left=true] - If true will set the material on the left bounds wall. * @param {boolean} [right=true] - If true will set the material on the right bounds wall. * @param {boolean} [top=true] - If true will set the material on the top bounds wall. * @param {boolean} [bottom=true] - If true will set the material on the bottom bounds wall. */ setWorldMaterial: function (material, left, right, top, bottom) { if (typeof left === 'undefined') { left = true; } if (typeof right === 'undefined') { right = true; } if (typeof top === 'undefined') { top = true; } if (typeof bottom === 'undefined') { bottom = true; } if (left && this.walls.left) { this.walls.left.shapes[0].material = material; } if (right && this.walls.right) { this.walls.right.shapes[0].material = material; } if (top && this.walls.top) { this.walls.top.shapes[0].material = material; } if (bottom && this.walls.bottom) { this.walls.bottom.shapes[0].material = material; } }, /** * By default the World will be set to collide everything with everything. The bounds of the world is a Body with 4 shapes, one for each face. * If you start to use your own collision groups then your objects will no longer collide with the bounds. * To fix this you need to adjust the bounds to use its own collision group first BEFORE changing your Sprites collision group. * * @method Phaser.Physics.P2#updateBoundsCollisionGroup * @param {boolean} [setCollisionGroup=true] - If true the Bounds will be set to use its own Collision Group. */ updateBoundsCollisionGroup: function (setCollisionGroup) { var mask = this.everythingCollisionGroup.mask; if (typeof setCollisionGroup === 'undefined') { mask = this.boundsCollisionGroup.mask; } if (this.walls.left) { this.walls.left.shapes[0].collisionGroup = mask; } if (this.walls.right) { this.walls.right.shapes[0].collisionGroup = mask; } if (this.walls.top) { this.walls.top.shapes[0].collisionGroup = mask; } if (this.walls.bottom) { this.walls.bottom.shapes[0].collisionGroup = mask; } }, /** * Sets the bounds of the Physics world to match the given world pixel dimensions. * You can optionally set which 'walls' to create: left, right, top or bottom. * * @method Phaser.Physics.P2#setBounds * @param {number} x - The x coordinate of the top-left corner of the bounds. * @param {number} y - The y coordinate of the top-left corner of the bounds. * @param {number} width - The width of the bounds. * @param {number} height - The height of the bounds. * @param {boolean} [left=true] - If true will create the left bounds wall. * @param {boolean} [right=true] - If true will create the right bounds wall. * @param {boolean} [top=true] - If true will create the top bounds wall. * @param {boolean} [bottom=true] - If true will create the bottom bounds wall. * @param {boolean} [setCollisionGroup=true] - If true the Bounds will be set to use its own Collision Group. */ setBounds: function (x, y, width, height, left, right, top, bottom, setCollisionGroup) { if (typeof left === 'undefined') { left = true; } if (typeof right === 'undefined') { right = true; } if (typeof top === 'undefined') { top = true; } if (typeof bottom === 'undefined') { bottom = true; } if (typeof setCollisionGroup === 'undefined') { setCollisionGroup = true; } if (this.walls.left) { this.world.removeBody(this.walls.left); } if (this.walls.right) { this.world.removeBody(this.walls.right); } if (this.walls.top) { this.world.removeBody(this.walls.top); } if (this.walls.bottom) { this.world.removeBody(this.walls.bottom); } if (left) { this.walls.left = new p2.Body({ mass: 0, position: [ this.pxmi(x), this.pxmi(y) ], angle: 1.5707963267948966 }); this.walls.left.addShape(new p2.Plane()); if (setCollisionGroup) { this.walls.left.shapes[0].collisionGroup = this.boundsCollisionGroup.mask; } this.world.addBody(this.walls.left); } if (right) { this.walls.right = new p2.Body({ mass: 0, position: [ this.pxmi(x + width), this.pxmi(y) ], angle: -1.5707963267948966 }); this.walls.right.addShape(new p2.Plane()); if (setCollisionGroup) { this.walls.right.shapes[0].collisionGroup = this.boundsCollisionGroup.mask; } this.world.addBody(this.walls.right); } if (top) { this.walls.top = new p2.Body({ mass: 0, position: [ this.pxmi(x), this.pxmi(y) ], angle: -3.141592653589793 }); this.walls.top.addShape(new p2.Plane()); if (setCollisionGroup) { this.walls.top.shapes[0].collisionGroup = this.boundsCollisionGroup.mask; } this.world.addBody(this.walls.top); } if (bottom) { this.walls.bottom = new p2.Body({ mass: 0, position: [ this.pxmi(x), this.pxmi(y + height) ] }); this.walls.bottom.addShape(new p2.Plane()); if (setCollisionGroup) { this.walls.bottom.shapes[0].collisionGroup = this.boundsCollisionGroup.mask; } this.world.addBody(this.walls.bottom); } }, /** * Pauses the P2 World independent of the game pause state. * * @method Phaser.Physics.P2#pause */ pause: function() { this.paused = true; }, /** * Resumes a paused P2 World. * * @method Phaser.Physics.P2#resume */ resume: function() { this.paused = false; }, /** * Internal P2 update loop. * * @method Phaser.Physics.P2#update */ update: function () { // Do nothing if the physics engine was paused before if (this.paused) { return; } if (this.useElapsedTime) { this.world.step(this.game.time.physicsElapsed); } else { this.world.step(this.frameRate); } }, /** * Called by Phaser.Physics when a State swap occurs. * Starts the begin and end Contact listeners again. * * @method Phaser.Physics.P2#reset */ reset: function () { this.world.on("beginContact", this.beginContactHandler, this); this.world.on("endContact", this.endContactHandler, this); this.nothingCollisionGroup = new Phaser.Physics.P2.CollisionGroup(1); this.boundsCollisionGroup = new Phaser.Physics.P2.CollisionGroup(2); this.everythingCollisionGroup = new Phaser.Physics.P2.CollisionGroup(2147483648); this._collisionGroupID = 2; this.setBoundsToWorld(true, true, true, true, false); }, /** * Clears all bodies from the simulation, resets callbacks and resets the collision bitmask. * * The P2 world is also cleared: * * * Removes all solver equations * * Removes all constraints * * Removes all bodies * * Removes all springs * * Removes all contact materials * * This is called automatically when you switch state. * * @method Phaser.Physics.P2#clear */ clear: function () { this.world.time = 0; this.world.fixedStepTime = 0; // Remove all solver equations if (this.world.solver && this.world.solver.equations.length) { this.world.solver.removeAllEquations(); } // Remove all constraints var cs = this.world.constraints; for (var i = cs.length - 1; i >= 0; i--) { this.world.removeConstraint(cs[i]); } // Remove all bodies var bodies = this.world.bodies; for (var i = bodies.length - 1; i >= 0; i--) { this.world.removeBody(bodies[i]); } // Remove all springs var springs = this.world.springs; for (var i = springs.length - 1; i >= 0; i--) { this.world.removeSpring(springs[i]); } // Remove all contact materials var cms = this.world.contactMaterials; for (var i = cms.length - 1; i >= 0; i--) { this.world.removeContactMaterial(cms[i]); } this.world.off("beginContact", this.beginContactHandler, this); this.world.off("endContact", this.endContactHandler, this); this.postBroadphaseCallback = null; this.callbackContext = null; this.impactCallback = null; this.collisionGroups = []; this._toRemove = []; this.boundsCollidesWith = []; }, /** * Clears all bodies from the simulation and unlinks World from Game. Should only be called on game shutdown. Call `clear` on a State change. * * @method Phaser.Physics.P2#destroy */ destroy: function () { this.clear(); this.game = null; }, /** * Add a body to the world. * * @method Phaser.Physics.P2#addBody * @param {Phaser.Physics.P2.Body} body - The Body to add to the World. * @return {boolean} True if the Body was added successfully, otherwise false. */ addBody: function (body) { if (body.data.world) { return false; } else { this.world.addBody(body.data); this.onBodyAdded.dispatch(body); return true; } }, /** * Removes a body from the world. This will silently fail if the body wasn't part of the world to begin with. * * @method Phaser.Physics.P2#removeBody * @param {Phaser.Physics.P2.Body} body - The Body to remove from the World. * @return {Phaser.Physics.P2.Body} The Body that was removed. */ removeBody: function (body) { if (body.data.world == this.world) { this.world.removeBody(body.data); this.onBodyRemoved.dispatch(body); } return body; }, /** * Adds a Spring to the world. * * @method Phaser.Physics.P2#addSpring * @param {Phaser.Physics.P2.Spring|p2.LinearSpring|p2.RotationalSpring} spring - The Spring to add to the World. * @return {Phaser.Physics.P2.Spring} The Spring that was added. */ addSpring: function (spring) { if (spring instanceof Phaser.Physics.P2.Spring || spring instanceof Phaser.Physics.P2.RotationalSpring) { this.world.addSpring(spring.data); } else { this.world.addSpring(spring); } this.onSpringAdded.dispatch(spring); return spring; }, /** * Removes a Spring from the world. * * @method Phaser.Physics.P2#removeSpring * @param {Phaser.Physics.P2.Spring} spring - The Spring to remove from the World. * @return {Phaser.Physics.P2.Spring} The Spring that was removed. */ removeSpring: function (spring) { if (spring instanceof Phaser.Physics.P2.Spring || spring instanceof Phaser.Physics.P2.RotationalSpring) { this.world.removeSpring(spring.data); } else { this.world.removeSpring(spring); } this.onSpringRemoved.dispatch(spring); return spring; }, /** * Creates a constraint that tries to keep the distance between two bodies constant. * * @method Phaser.Physics.P2#createDistanceConstraint * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyA - First connected body. * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyB - Second connected body. * @param {number} distance - The distance to keep between the bodies. * @param {Array} [localAnchorA] - The anchor point for bodyA, defined locally in bodyA frame. Defaults to [0,0]. * @param {Array} [localAnchorB] - The anchor point for bodyB, defined locally in bodyB frame. Defaults to [0,0]. * @param {number} [maxForce] - The maximum force that should be applied to constrain the bodies. * @return {Phaser.Physics.P2.DistanceConstraint} The constraint */ createDistanceConstraint: function (bodyA, bodyB, distance, localAnchorA, localAnchorB, maxForce) { bodyA = this.getBody(bodyA); bodyB = this.getBody(bodyB); if (!bodyA || !bodyB) { console.warn('Cannot create Constraint, invalid body objects given'); } else { return this.addConstraint(new Phaser.Physics.P2.DistanceConstraint(this, bodyA, bodyB, distance, localAnchorA, localAnchorB, maxForce)); } }, /** * Creates a constraint that tries to keep the distance between two bodies constant. * * @method Phaser.Physics.P2#createGearConstraint * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyA - First connected body. * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyB - Second connected body. * @param {number} [angle=0] - The relative angle * @param {number} [ratio=1] - The gear ratio. * @return {Phaser.Physics.P2.GearConstraint} The constraint */ createGearConstraint: function (bodyA, bodyB, angle, ratio) { bodyA = this.getBody(bodyA); bodyB = this.getBody(bodyB); if (!bodyA || !bodyB) { console.warn('Cannot create Constraint, invalid body objects given'); } else { return this.addConstraint(new Phaser.Physics.P2.GearConstraint(this, bodyA, bodyB, angle, ratio)); } }, /** * Connects two bodies at given offset points, letting them rotate relative to each other around this point. * The pivot points are given in world (pixel) coordinates. * * @method Phaser.Physics.P2#createRevoluteConstraint * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyA - First connected body. * @param {Array} pivotA - The point relative to the center of mass of bodyA which bodyA is constrained to. The value is an array with 2 elements matching x and y, i.e: [32, 32]. * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyB - Second connected body. * @param {Array} pivotB - The point relative to the center of mass of bodyB which bodyB is constrained to. The value is an array with 2 elements matching x and y, i.e: [32, 32]. * @param {number} [maxForce=0] - The maximum force that should be applied to constrain the bodies. * @param {Float32Array} [worldPivot=null] - A pivot point given in world coordinates. If specified, localPivotA and localPivotB are automatically computed from this value. * @return {Phaser.Physics.P2.RevoluteConstraint} The constraint */ createRevoluteConstraint: function (bodyA, pivotA, bodyB, pivotB, maxForce, worldPivot) { bodyA = this.getBody(bodyA); bodyB = this.getBody(bodyB); if (!bodyA || !bodyB) { console.warn('Cannot create Constraint, invalid body objects given'); } else { return this.addConstraint(new Phaser.Physics.P2.RevoluteConstraint(this, bodyA, pivotA, bodyB, pivotB, maxForce, worldPivot)); } }, /** * Locks the relative position between two bodies. * * @method Phaser.Physics.P2#createLockConstraint * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyA - First connected body. * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyB - Second connected body. * @param {Array} [offset] - The offset of bodyB in bodyA's frame. The value is an array with 2 elements matching x and y, i.e: [32, 32]. * @param {number} [angle=0] - The angle of bodyB in bodyA's frame. * @param {number} [maxForce] - The maximum force that should be applied to constrain the bodies. * @return {Phaser.Physics.P2.LockConstraint} The constraint */ createLockConstraint: function (bodyA, bodyB, offset, angle, maxForce) { bodyA = this.getBody(bodyA); bodyB = this.getBody(bodyB); if (!bodyA || !bodyB) { console.warn('Cannot create Constraint, invalid body objects given'); } else { return this.addConstraint(new Phaser.Physics.P2.LockConstraint(this, bodyA, bodyB, offset, angle, maxForce)); } }, /** * Constraint that only allows bodies to move along a line, relative to each other. * See http://www.iforce2d.net/b2dtut/joints-prismatic * * @method Phaser.Physics.P2#createPrismaticConstraint * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyA - First connected body. * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyB - Second connected body. * @param {boolean} [lockRotation=true] - If set to false, bodyB will be free to rotate around its anchor point. * @param {Array} [anchorA] - Body A's anchor point, defined in its own local frame. The value is an array with 2 elements matching x and y, i.e: [32, 32]. * @param {Array} [anchorB] - Body A's anchor point, defined in its own local frame. The value is an array with 2 elements matching x and y, i.e: [32, 32]. * @param {Array} [axis] - An axis, defined in body A frame, that body B's anchor point may slide along. The value is an array with 2 elements matching x and y, i.e: [32, 32]. * @param {number} [maxForce] - The maximum force that should be applied to constrain the bodies. * @return {Phaser.Physics.P2.PrismaticConstraint} The constraint */ createPrismaticConstraint: function (bodyA, bodyB, lockRotation, anchorA, anchorB, axis, maxForce) { bodyA = this.getBody(bodyA); bodyB = this.getBody(bodyB); if (!bodyA || !bodyB) { console.warn('Cannot create Constraint, invalid body objects given'); } else { return this.addConstraint(new Phaser.Physics.P2.PrismaticConstraint(this, bodyA, bodyB, lockRotation, anchorA, anchorB, axis, maxForce)); } }, /** * Adds a Constraint to the world. * * @method Phaser.Physics.P2#addConstraint * @param {Phaser.Physics.P2.Constraint} constraint - The Constraint to add to the World. * @return {Phaser.Physics.P2.Constraint} The Constraint that was added. */ addConstraint: function (constraint) { this.world.addConstraint(constraint); this.onConstraintAdded.dispatch(constraint); return constraint; }, /** * Removes a Constraint from the world. * * @method Phaser.Physics.P2#removeConstraint * @param {Phaser.Physics.P2.Constraint} constraint - The Constraint to be removed from the World. * @return {Phaser.Physics.P2.Constraint} The Constraint that was removed. */ removeConstraint: function (constraint) { this.world.removeConstraint(constraint); this.onConstraintRemoved.dispatch(constraint); return constraint; }, /** * Adds a Contact Material to the world. * * @method Phaser.Physics.P2#addContactMaterial * @param {Phaser.Physics.P2.ContactMaterial} material - The Contact Material to be added to the World. * @return {Phaser.Physics.P2.ContactMaterial} The Contact Material that was added. */ addContactMaterial: function (material) { this.world.addContactMaterial(material); this.onContactMaterialAdded.dispatch(material); return material; }, /** * Removes a Contact Material from the world. * * @method Phaser.Physics.P2#removeContactMaterial * @param {Phaser.Physics.P2.ContactMaterial} material - The Contact Material to be removed from the World. * @return {Phaser.Physics.P2.ContactMaterial} The Contact Material that was removed. */ removeContactMaterial: function (material) { this.world.removeContactMaterial(material); this.onContactMaterialRemoved.dispatch(material); return material; }, /** * Gets a Contact Material based on the two given Materials. * * @method Phaser.Physics.P2#getContactMaterial * @param {Phaser.Physics.P2.Material} materialA - The first Material to search for. * @param {Phaser.Physics.P2.Material} materialB - The second Material to search for. * @return {Phaser.Physics.P2.ContactMaterial|boolean} The Contact Material or false if none was found matching the Materials given. */ getContactMaterial: function (materialA, materialB) { return this.world.getContactMaterial(materialA, materialB); }, /** * Sets the given Material against all Shapes owned by all the Bodies in the given array. * * @method Phaser.Physics.P2#setMaterial * @param {Phaser.Physics.P2.Material} material - The Material to be applied to the given Bodies. * @param {array} bodies - An Array of Body objects that the given Material will be set on. */ setMaterial: function (material, bodies) { var i = bodies.length; while (i--) { bodies[i].setMaterial(material); } }, /** * Creates a Material. Materials are applied to Shapes owned by a Body and can be set with Body.setMaterial(). * Materials are a way to control what happens when Shapes collide. Combine unique Materials together to create Contact Materials. * Contact Materials have properties such as friction and restitution that allow for fine-grained collision control between different Materials. * * @method Phaser.Physics.P2#createMaterial * @param {string} [name] - Optional name of the Material. Each Material has a unique ID but string names are handy for debugging. * @param {Phaser.Physics.P2.Body} [body] - Optional Body. If given it will assign the newly created Material to the Body shapes. * @return {Phaser.Physics.P2.Material} The Material that was created. This is also stored in Phaser.Physics.P2.materials. */ createMaterial: function (name, body) { name = name || ''; var material = new Phaser.Physics.P2.Material(name); this.materials.push(material); if (typeof body !== 'undefined') { body.setMaterial(material); } return material; }, /** * Creates a Contact Material from the two given Materials. You can then edit the properties of the Contact Material directly. * * @method Phaser.Physics.P2#createContactMaterial * @param {Phaser.Physics.P2.Material} [materialA] - The first Material to create the ContactMaterial from. If undefined it will create a new Material object first. * @param {Phaser.Physics.P2.Material} [materialB] - The second Material to create the ContactMaterial from. If undefined it will create a new Material object first. * @param {object} [options] - Material options object. * @return {Phaser.Physics.P2.ContactMaterial} The Contact Material that was created. */ createContactMaterial: function (materialA, materialB, options) { if (typeof materialA === 'undefined') { materialA = this.createMaterial(); } if (typeof materialB === 'undefined') { materialB = this.createMaterial(); } var contact = new Phaser.Physics.P2.ContactMaterial(materialA, materialB, options); return this.addContactMaterial(contact); }, /** * Populates and returns an array with references to of all current Bodies in the world. * * @method Phaser.Physics.P2#getBodies * @return {array} An array containing all current Bodies in the world. */ getBodies: function () { var output = []; var i = this.world.bodies.length; while (i--) { output.push(this.world.bodies[i].parent); } return output; }, /** * Checks the given object to see if it has a p2.Body and if so returns it. * * @method Phaser.Physics.P2#getBody * @param {object} object - The object to check for a p2.Body on. * @return {p2.Body} The p2.Body, or null if not found. */ getBody: function (object) { if (object instanceof p2.Body) { // Native p2 body return object; } else if (object instanceof Phaser.Physics.P2.Body) { // Phaser P2 Body return object.data; } else if (object['body'] && object['body'].type === Phaser.Physics.P2JS) { // Sprite, TileSprite, etc return object.body.data; } return null; }, /** * Populates and returns an array of all current Springs in the world. * * @method Phaser.Physics.P2#getSprings * @return {array} An array containing all current Springs in the world. */ getSprings: function () { var output = []; var i = this.world.springs.length; while (i--) { output.push(this.world.springs[i].parent); } return output; }, /** * Populates and returns an array of all current Constraints in the world. * * @method Phaser.Physics.P2#getConstraints * @return {array} An array containing all current Constraints in the world. */ getConstraints: function () { var output = []; var i = this.world.constraints.length; while (i--) { output.push(this.world.constraints[i].parent); } return output; }, /** * Test if a world point overlaps bodies. You will get an array of actual P2 bodies back. You can find out which Sprite a Body belongs to * (if any) by checking the Body.parent.sprite property. Body.parent is a Phaser.Physics.P2.Body property. * * @method Phaser.Physics.P2#hitTest * @param {Phaser.Point} worldPoint - Point to use for intersection tests. The points values must be in world (pixel) coordinates. * @param {Array} [bodies] - A list of objects to check for intersection. If not given it will check Phaser.Physics.P2.world.bodies (i.e. all world bodies) * @param {number} [precision=5] - Used for matching against particles and lines. Adds some margin to these infinitesimal objects. * @param {boolean} [filterStatic=false] - If true all Static objects will be removed from the results array. * @return {Array} Array of bodies that overlap the point. */ hitTest: function (worldPoint, bodies, precision, filterStatic) { if (typeof bodies === 'undefined') { bodies = this.world.bodies; } if (typeof precision === 'undefined') { precision = 5; } if (typeof filterStatic === 'undefined') { filterStatic = false; } var physicsPosition = [ this.pxmi(worldPoint.x), this.pxmi(worldPoint.y) ]; var query = []; var i = bodies.length; while (i--) { if (bodies[i] instanceof Phaser.Physics.P2.Body && !(filterStatic && bodies[i].data.type === p2.Body.STATIC)) { query.push(bodies[i].data); } else if (bodies[i] instanceof p2.Body && bodies[i].parent && !(filterStatic && bodies[i].type === p2.Body.STATIC)) { query.push(bodies[i]); } else if (bodies[i] instanceof Phaser.Sprite && bodies[i].hasOwnProperty('body') && !(filterStatic && bodies[i].body.data.type === p2.Body.STATIC)) { query.push(bodies[i].body.data); } } return this.world.hitTest(physicsPosition, query, precision); }, /** * Converts the current world into a JSON object. * * @method Phaser.Physics.P2#toJSON * @return {object} A JSON representation of the world. */ toJSON: function () { return this.world.toJSON(); }, /** * Creates a new Collision Group and optionally applies it to the given object. * Collision Groups are handled using bitmasks, therefore you have a fixed limit you can create before you need to re-use older groups. * * @method Phaser.Physics.P2#createCollisionGroup * @param {Phaser.Group|Phaser.Sprite} [object] - An optional Sprite or Group to apply the Collision Group to. If a Group is given it will be applied to all top-level children. */ createCollisionGroup: function (object) { var bitmask = Math.pow(2, this._collisionGroupID); if (this.walls.left) { this.walls.left.shapes[0].collisionMask = this.walls.left.shapes[0].collisionMask | bitmask; } if (this.walls.right) { this.walls.right.shapes[0].collisionMask = this.walls.right.shapes[0].collisionMask | bitmask; } if (this.walls.top) { this.walls.top.shapes[0].collisionMask = this.walls.top.shapes[0].collisionMask | bitmask; } if (this.walls.bottom) { this.walls.bottom.shapes[0].collisionMask = this.walls.bottom.shapes[0].collisionMask | bitmask; } this._collisionGroupID++; var group = new Phaser.Physics.P2.CollisionGroup(bitmask); this.collisionGroups.push(group); if (object) { this.setCollisionGroup(object, group); } return group; }, /** * Sets the given CollisionGroup to be the collision group for all shapes in this Body, unless a shape is specified. * Note that this resets the collisionMask and any previously set groups. See Body.collides() for appending them. * * @method Phaser.Physics.P2y#setCollisionGroup * @param {Phaser.Group|Phaser.Sprite} object - A Sprite or Group to apply the Collision Group to. If a Group is given it will be applied to all top-level children. * @param {Phaser.Physics.CollisionGroup} group - The Collision Group that this Bodies shapes will use. */ setCollisionGroup: function (object, group) { if (object instanceof Phaser.Group) { for (var i = 0; i < object.total; i++) { if (object.children[i]['body'] && object.children[i]['body'].type === Phaser.Physics.P2JS) { object.children[i].body.setCollisionGroup(group); } } } else { object.body.setCollisionGroup(group); } }, /** * Creates a linear spring, connecting two bodies. A spring can have a resting length, a stiffness and damping. * * @method Phaser.Physics.P2#createSpring * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyA - First connected body. * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyB - Second connected body. * @param {number} [restLength=1] - Rest length of the spring. A number > 0. * @param {number} [stiffness=100] - Stiffness of the spring. A number >= 0. * @param {number} [damping=1] - Damping of the spring. A number >= 0. * @param {Array} [worldA] - Where to hook the spring to body A in world coordinates. This value is an array by 2 elements, x and y, i.e: [32, 32]. * @param {Array} [worldB] - Where to hook the spring to body B in world coordinates. This value is an array by 2 elements, x and y, i.e: [32, 32]. * @param {Array} [localA] - Where to hook the spring to body A in local body coordinates. This value is an array by 2 elements, x and y, i.e: [32, 32]. * @param {Array} [localB] - Where to hook the spring to body B in local body coordinates. This value is an array by 2 elements, x and y, i.e: [32, 32]. * @return {Phaser.Physics.P2.Spring} The spring */ createSpring: function (bodyA, bodyB, restLength, stiffness, damping, worldA, worldB, localA, localB) { bodyA = this.getBody(bodyA); bodyB = this.getBody(bodyB); if (!bodyA || !bodyB) { console.warn('Cannot create Spring, invalid body objects given'); } else { return this.addSpring(new Phaser.Physics.P2.Spring(this, bodyA, bodyB, restLength, stiffness, damping, worldA, worldB, localA, localB)); } }, /** * Creates a rotational spring, connecting two bodies. A spring can have a resting length, a stiffness and damping. * * @method Phaser.Physics.P2#createRotationalSpring * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyA - First connected body. * @param {Phaser.Sprite|Phaser.Physics.P2.Body|p2.Body} bodyB - Second connected body. * @param {number} [restAngle] - The relative angle of bodies at which the spring is at rest. If not given, it's set to the current relative angle between the bodies. * @param {number} [stiffness=100] - Stiffness of the spring. A number >= 0. * @param {number} [damping=1] - Damping of the spring. A number >= 0. * @return {Phaser.Physics.P2.RotationalSpring} The spring */ createRotationalSpring: function (bodyA, bodyB, restAngle, stiffness, damping) { bodyA = this.getBody(bodyA); bodyB = this.getBody(bodyB); if (!bodyA || !bodyB) { console.warn('Cannot create Rotational Spring, invalid body objects given'); } else { return this.addSpring(new Phaser.Physics.P2.RotationalSpring(this, bodyA, bodyB, restAngle, stiffness, damping)); } }, /** * Creates a new Body and adds it to the World. * * @method Phaser.Physics.P2#createBody * @param {number} x - The x coordinate of Body. * @param {number} y - The y coordinate of Body. * @param {number} mass - The mass of the Body. A mass of 0 means a 'static' Body is created. * @param {boolean} [addToWorld=false] - Automatically add this Body to the world? (usually false as it won't have any shapes on construction). * @param {object} options - An object containing the build options: * @param {boolean} [options.optimalDecomp=false] - Set to true if you need optimal decomposition. Warning: very slow for polygons with more than 10 vertices. * @param {boolean} [options.skipSimpleCheck=false] - Set to true if you already know that the path is not intersecting itself. * @param {boolean|number} [options.removeCollinearPoints=false] - Set to a number (angle threshold value) to remove collinear points, or false to keep all points. * @param {(number[]|...number)} points - An array of 2d vectors that form the convex or concave polygon. * Either [[0,0], [0,1],...] or a flat array of numbers that will be interpreted as [x,y, x,y, ...], * or the arguments passed can be flat x,y values e.g. `setPolygon(options, x,y, x,y, x,y, ...)` where `x` and `y` are numbers. * @return {Phaser.Physics.P2.Body} The body */ createBody: function (x, y, mass, addToWorld, options, data) { if (typeof addToWorld === 'undefined') { addToWorld = false; } var body = new Phaser.Physics.P2.Body(this.game, null, x, y, mass); if (data) { var result = body.addPolygon(options, data); if (!result) { return false; } } if (addToWorld) { this.world.addBody(body.data); } return body; }, /** * Creates a new Particle and adds it to the World. * * @method Phaser.Physics.P2#createParticle * @param {number} x - The x coordinate of Body. * @param {number} y - The y coordinate of Body. * @param {number} mass - The mass of the Body. A mass of 0 means a 'static' Body is created. * @param {boolean} [addToWorld=false] - Automatically add this Body to the world? (usually false as it won't have any shapes on construction). * @param {object} options - An object containing the build options: * @param {boolean} [options.optimalDecomp=false] - Set to true if you need optimal decomposition. Warning: very slow for polygons with more than 10 vertices. * @param {boolean} [options.skipSimpleCheck=false] - Set to true if you already know that the path is not intersecting itself. * @param {boolean|number} [options.removeCollinearPoints=false] - Set to a number (angle threshold value) to remove collinear points, or false to keep all points. * @param {(number[]|...number)} points - An array of 2d vectors that form the convex or concave polygon. * Either [[0,0], [0,1],...] or a flat array of numbers that will be interpreted as [x,y, x,y, ...], * or the arguments passed can be flat x,y values e.g. `setPolygon(options, x,y, x,y, x,y, ...)` where `x` and `y` are numbers. */ createParticle: function (x, y, mass, addToWorld, options, data) { if (typeof addToWorld === 'undefined') { addToWorld = false; } var body = new Phaser.Physics.P2.Body(this.game, null, x, y, mass); if (data) { var result = body.addPolygon(options, data); if (!result) { return false; } } if (addToWorld) { this.world.addBody(body.data); } return body; }, /** * Converts all of the polylines objects inside a Tiled ObjectGroup into physics bodies that are added to the world. * Note that the polylines must be created in such a way that they can withstand polygon decomposition. * * @method Phaser.Physics.P2#convertCollisionObjects * @param {Phaser.Tilemap} map - The Tilemap to get the map data from. * @param {number|string|Phaser.TilemapLayer} [layer] - The layer to operate on. If not given will default to map.currentLayer. * @param {boolean} [addToWorld=true] - If true it will automatically add each body to the world. * @return {array} An array of the Phaser.Physics.Body objects that have been created. */ convertCollisionObjects: function (map, layer, addToWorld) { if (typeof addToWorld === 'undefined') { addToWorld = true; } var output = []; for (var i = 0, len = map.collision[layer].length; i < len; i++) { // name: json.layers[i].objects[v].name, // x: json.layers[i].objects[v].x, // y: json.layers[i].objects[v].y, // width: json.layers[i].objects[v].width, // height: json.layers[i].objects[v].height, // visible: json.layers[i].objects[v].visible, // properties: json.layers[i].objects[v].properties, // polyline: json.layers[i].objects[v].polyline var object = map.collision[layer][i]; var body = this.createBody(object.x, object.y, 0, addToWorld, {}, object.polyline); if (body) { output.push(body); } } return output; }, /** * Clears all physics bodies from the given TilemapLayer that were created with `World.convertTilemap`. * * @method Phaser.Physics.P2#clearTilemapLayerBodies * @param {Phaser.Tilemap} map - The Tilemap to get the map data from. * @param {number|string|Phaser.TilemapLayer} [layer] - The layer to operate on. If not given will default to map.currentLayer. */ clearTilemapLayerBodies: function (map, layer) { layer = map.getLayer(layer); var i = map.layers[layer].bodies.length; while (i--) { map.layers[layer].bodies[i].destroy(); } map.layers[layer].bodies.length = 0; }, /** * Goes through all tiles in the given Tilemap and TilemapLayer and converts those set to collide into physics bodies. * Only call this *after* you have specified all of the tiles you wish to collide with calls like Tilemap.setCollisionBetween, etc. * Every time you call this method it will destroy any previously created bodies and remove them from the world. * Therefore understand it's a very expensive operation and not to be done in a core game update loop. * * @method Phaser.Physics.P2#convertTilemap * @param {Phaser.Tilemap} map - The Tilemap to get the map data from. * @param {number|string|Phaser.TilemapLayer} [layer] - The layer to operate on. If not given will default to map.currentLayer. * @param {boolean} [addToWorld=true] - If true it will automatically add each body to the world, otherwise it's up to you to do so. * @param {boolean} [optimize=true] - If true adjacent colliding tiles will be combined into a single body to save processing. However it means you cannot perform specific Tile to Body collision responses. * @return {array} An array of the Phaser.Physics.P2.Body objects that were created. */ convertTilemap: function (map, layer, addToWorld, optimize) { layer = map.getLayer(layer); if (typeof addToWorld === 'undefined') { addToWorld = true; } if (typeof optimize === 'undefined') { optimize = true; } // If the bodies array is already populated we need to nuke it this.clearTilemapLayerBodies(map, layer); var width = 0; var sx = 0; var sy = 0; for (var y = 0, h = map.layers[layer].height; y < h; y++) { width = 0; for (var x = 0, w = map.layers[layer].width; x < w; x++) { var tile = map.layers[layer].data[y][x]; if (tile && tile.index > -1 && tile.collides) { if (optimize) { var right = map.getTileRight(layer, x, y); if (width === 0) { sx = tile.x * tile.width; sy = tile.y * tile.height; width = tile.width; } if (right && right.collides) { width += tile.width; } else { var body = this.createBody(sx, sy, 0, false); body.addRectangle(width, tile.height, width / 2, tile.height / 2, 0); if (addToWorld) { this.addBody(body); } map.layers[layer].bodies.push(body); width = 0; } } else { var body = this.createBody(tile.x * tile.width, tile.y * tile.height, 0, false); body.addRectangle(tile.width, tile.height, tile.width / 2, tile.height / 2, 0); if (addToWorld) { this.addBody(body); } map.layers[layer].bodies.push(body); } } } } return map.layers[layer].bodies; }, /** * Convert p2 physics value (meters) to pixel scale. * By default Phaser uses a scale of 20px per meter. * If you need to modify this you can over-ride these functions via the Physics Configuration object. * * @method Phaser.Physics.P2#mpx * @param {number} v - The value to convert. * @return {number} The scaled value. */ mpx: function (v) { return v *= 20; }, /** * Convert pixel value to p2 physics scale (meters). * By default Phaser uses a scale of 20px per meter. * If you need to modify this you can over-ride these functions via the Physics Configuration object. * * @method Phaser.Physics.P2#pxm * @param {number} v - The value to convert. * @return {number} The scaled value. */ pxm: function (v) { return v * 0.05; }, /** * Convert p2 physics value (meters) to pixel scale and inverses it. * By default Phaser uses a scale of 20px per meter. * If you need to modify this you can over-ride these functions via the Physics Configuration object. * * @method Phaser.Physics.P2#mpxi * @param {number} v - The value to convert. * @return {number} The scaled value. */ mpxi: function (v) { return v *= -20; }, /** * Convert pixel value to p2 physics scale (meters) and inverses it. * By default Phaser uses a scale of 20px per meter. * If you need to modify this you can over-ride these functions via the Physics Configuration object. * * @method Phaser.Physics.P2#pxmi * @param {number} v - The value to convert. * @return {number} The scaled value. */ pxmi: function (v) { return v * -0.05; } }; /** * @name Phaser.Physics.P2#friction * @property {number} friction - Friction between colliding bodies. This value is used if no matching ContactMaterial is found for a Material pair. */ Object.defineProperty(Phaser.Physics.P2.prototype, "friction", { get: function () { return this.world.defaultContactMaterial.friction; }, set: function (value) { this.world.defaultContactMaterial.friction = value; } }); /** * @name Phaser.Physics.P2#restitution * @property {number} restitution - Default coefficient of restitution between colliding bodies. This value is used if no matching ContactMaterial is found for a Material pair. */ Object.defineProperty(Phaser.Physics.P2.prototype, "restitution", { get: function () { return this.world.defaultContactMaterial.restitution; }, set: function (value) { this.world.defaultContactMaterial.restitution = value; } }); /** * @name Phaser.Physics.P2#contactMaterial * @property {p2.ContactMaterial} contactMaterial - The default Contact Material being used by the World. */ Object.defineProperty(Phaser.Physics.P2.prototype, "contactMaterial", { get: function () { return this.world.defaultContactMaterial; }, set: function (value) { this.world.defaultContactMaterial = value; } }); /** * @name Phaser.Physics.P2#applySpringForces * @property {boolean} applySpringForces - Enable to automatically apply spring forces each step. */ Object.defineProperty(Phaser.Physics.P2.prototype, "applySpringForces", { get: function () { return this.world.applySpringForces; }, set: function (value) { this.world.applySpringForces = value; } }); /** * @name Phaser.Physics.P2#applyDamping * @property {boolean} applyDamping - Enable to automatically apply body damping each step. */ Object.defineProperty(Phaser.Physics.P2.prototype, "applyDamping", { get: function () { return this.world.applyDamping; }, set: function (value) { this.world.applyDamping = value; } }); /** * @name Phaser.Physics.P2#applyGravity * @property {boolean} applyGravity - Enable to automatically apply gravity each step. */ Object.defineProperty(Phaser.Physics.P2.prototype, "applyGravity", { get: function () { return this.world.applyGravity; }, set: function (value) { this.world.applyGravity = value; } }); /** * @name Phaser.Physics.P2#solveConstraints * @property {boolean} solveConstraints - Enable/disable constraint solving in each step. */ Object.defineProperty(Phaser.Physics.P2.prototype, "solveConstraints", { get: function () { return this.world.solveConstraints; }, set: function (value) { this.world.solveConstraints = value; } }); /** * @name Phaser.Physics.P2#time * @property {boolean} time - The World time. * @readonly */ Object.defineProperty(Phaser.Physics.P2.prototype, "time", { get: function () { return this.world.time; } }); /** * @name Phaser.Physics.P2#emitImpactEvent * @property {boolean} emitImpactEvent - Set to true if you want to the world to emit the "impact" event. Turning this off could improve performance. */ Object.defineProperty(Phaser.Physics.P2.prototype, "emitImpactEvent", { get: function () { return this.world.emitImpactEvent; }, set: function (value) { this.world.emitImpactEvent = value; } }); /** * How to deactivate bodies during simulation. Possible modes are: World.NO_SLEEPING, World.BODY_SLEEPING and World.ISLAND_SLEEPING. * If sleeping is enabled, you might need to wake up the bodies if they fall asleep when they shouldn't. If you want to enable sleeping in the world, but want to disable it for a particular body, see Body.allowSleep. * @name Phaser.Physics.P2#sleepMode * @property {number} sleepMode */ Object.defineProperty(Phaser.Physics.P2.prototype, "sleepMode", { get: function () { return this.world.sleepMode; }, set: function (value) { this.world.sleepMode = value; } }); /** * @name Phaser.Physics.P2#total * @property {number} total - The total number of bodies in the world. * @readonly */ Object.defineProperty(Phaser.Physics.P2.prototype, "total", { get: function () { return this.world.bodies.length; } }); /* jshint noarg: false */ /** * @author Georgios Kaleadis https://github.com/georgiee * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ /** * Allow to access a list of created fixture (coming from Body#addPhaserPolygon) * which itself parse the input from PhysicsEditor with the custom phaser exporter. * You can access fixtures of a Body by a group index or even by providing a fixture Key. * You can set the fixture key and also the group index for a fixture in PhysicsEditor. * This gives you the power to create a complex body built of many fixtures and modify them * during runtime (to remove parts, set masks, categories & sensor properties) * * @class Phaser.Physics.P2.FixtureList * @constructor * @param {Array} list - A list of fixtures (from Phaser.Physics.P2.Body#addPhaserPolygon) */ Phaser.Physics.P2.FixtureList = function (list) { if (!Array.isArray(list)) { list = [list]; } this.rawList = list; this.init(); this.parse(this.rawList); }; Phaser.Physics.P2.FixtureList.prototype = { /** * @method Phaser.Physics.P2.FixtureList#init */ init: function () { /** * @property {object} namedFixtures - Collect all fixtures with a key * @private */ this.namedFixtures = {}; /** * @property {Array} groupedFixtures - Collect all given fixtures per group index. Notice: Every fixture with a key also belongs to a group * @private */ this.groupedFixtures = []; /** * @property {Array} allFixtures - This is a list of everything in this collection * @private */ this.allFixtures = []; }, /** * @method Phaser.Physics.P2.FixtureList#setCategory * @param {number} bit - The bit to set as the collision group. * @param {string} fixtureKey - Only apply to the fixture with the given key. */ setCategory: function (bit, fixtureKey) { var setter = function(fixture) { fixture.collisionGroup = bit; }; this.getFixtures(fixtureKey).forEach(setter); }, /** * @method Phaser.Physics.P2.FixtureList#setMask * @param {number} bit - The bit to set as the collision mask * @param {string} fixtureKey - Only apply to the fixture with the given key */ setMask: function (bit, fixtureKey) { var setter = function(fixture) { fixture.collisionMask = bit; }; this.getFixtures(fixtureKey).forEach(setter); }, /** * @method Phaser.Physics.P2.FixtureList#setSensor * @param {boolean} value - sensor true or false * @param {string} fixtureKey - Only apply to the fixture with the given key */ setSensor: function (value, fixtureKey) { var setter = function(fixture) { fixture.sensor = value; }; this.getFixtures(fixtureKey).forEach(setter); }, /** * @method Phaser.Physics.P2.FixtureList#setMaterial * @param {Object} material - The contact material for a fixture * @param {string} fixtureKey - Only apply to the fixture with the given key */ setMaterial: function (material, fixtureKey) { var setter = function(fixture) { fixture.material = material; }; this.getFixtures(fixtureKey).forEach(setter); }, /** * Accessor to get either a list of specified fixtures by key or the whole fixture list * * @method Phaser.Physics.P2.FixtureList#getFixtures * @param {array} keys - A list of fixture keys */ getFixtures: function (keys) { var fixtures = []; if (keys) { if (!(keys instanceof Array)) { keys = [keys]; } var self = this; keys.forEach(function(key) { if (self.namedFixtures[key]) { fixtures.push(self.namedFixtures[key]); } }); return this.flatten(fixtures); } else { return this.allFixtures; } }, /** * Accessor to get either a single fixture by its key. * * @method Phaser.Physics.P2.FixtureList#getFixtureByKey * @param {string} key - The key of the fixture. */ getFixtureByKey: function (key) { return this.namedFixtures[key]; }, /** * Accessor to get a group of fixtures by its group index. * * @method Phaser.Physics.P2.FixtureList#getGroup * @param {number} groupID - The group index. */ getGroup: function (groupID) { return this.groupedFixtures[groupID]; }, /** * Parser for the output of Phaser.Physics.P2.Body#addPhaserPolygon * * @method Phaser.Physics.P2.FixtureList#parse */ parse: function () { var key, value, _ref, _results; _ref = this.rawList; _results = []; for (key in _ref) { value = _ref[key]; if (!isNaN(key - 0)) { this.groupedFixtures[key] = this.groupedFixtures[key] || []; this.groupedFixtures[key] = this.groupedFixtures[key].concat(value); } else { this.namedFixtures[key] = this.flatten(value); } _results.push(this.allFixtures = this.flatten(this.groupedFixtures)); } }, /** * A helper to flatten arrays. This is very useful as the fixtures are nested from time to time due to the way P2 creates and splits polygons. * * @method Phaser.Physics.P2.FixtureList#flatten * @param {array} array - The array to flatten. Notice: This will happen recursive not shallow. */ flatten: function (array) { var result, self; result = []; self = arguments.callee; array.forEach(function(item) { return Array.prototype.push.apply(result, (Array.isArray(item) ? self(item) : [item])); }); return result; } }; /** * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ /** * A PointProxy is an internal class that allows for direct getter/setter style property access to Arrays and TypedArrays. * * @class Phaser.Physics.P2.PointProxy * @constructor * @param {Phaser.Physics.P2} world - A reference to the P2 World. * @param {any} destination - The object to bind to. */ Phaser.Physics.P2.PointProxy = function (world, destination) { this.world = world; this.destination = destination; }; Phaser.Physics.P2.PointProxy.prototype.constructor = Phaser.Physics.P2.PointProxy; /** * @name Phaser.Physics.P2.PointProxy#x * @property {number} x - The x property of this PointProxy get and set in pixels. */ Object.defineProperty(Phaser.Physics.P2.PointProxy.prototype, "x", { get: function () { return this.world.mpx(this.destination[0]); }, set: function (value) { this.destination[0] = this.world.pxm(value); } }); /** * @name Phaser.Physics.P2.PointProxy#y * @property {number} y - The y property of this PointProxy get and set in pixels. */ Object.defineProperty(Phaser.Physics.P2.PointProxy.prototype, "y", { get: function () { return this.world.mpx(this.destination[1]); }, set: function (value) { this.destination[1] = this.world.pxm(value); } }); /** * @name Phaser.Physics.P2.PointProxy#mx * @property {number} mx - The x property of this PointProxy get and set in meters. */ Object.defineProperty(Phaser.Physics.P2.PointProxy.prototype, "mx", { get: function () { return this.destination[0]; }, set: function (value) { this.destination[0] = value; } }); /** * @name Phaser.Physics.P2.PointProxy#my * @property {number} my - The x property of this PointProxy get and set in meters. */ Object.defineProperty(Phaser.Physics.P2.PointProxy.prototype, "my", { get: function () { return this.destination[1]; }, set: function (value) { this.destination[1] = value; } }); /** * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ /** * A InversePointProxy is an internal class that allows for direct getter/setter style property access to Arrays and TypedArrays but inverses the values on set. * * @class Phaser.Physics.P2.InversePointProxy * @constructor * @param {Phaser.Physics.P2} world - A reference to the P2 World. * @param {any} destination - The object to bind to. */ Phaser.Physics.P2.InversePointProxy = function (world, destination) { this.world = world; this.destination = destination; }; Phaser.Physics.P2.InversePointProxy.prototype.constructor = Phaser.Physics.P2.InversePointProxy; /** * @name Phaser.Physics.P2.InversePointProxy#x * @property {number} x - The x property of this InversePointProxy get and set in pixels. */ Object.defineProperty(Phaser.Physics.P2.InversePointProxy.prototype, "x", { get: function () { return this.world.mpxi(this.destination[0]); }, set: function (value) { this.destination[0] = this.world.pxmi(value); } }); /** * @name Phaser.Physics.P2.InversePointProxy#y * @property {number} y - The y property of this InversePointProxy get and set in pixels. */ Object.defineProperty(Phaser.Physics.P2.InversePointProxy.prototype, "y", { get: function () { return this.world.mpxi(this.destination[1]); }, set: function (value) { this.destination[1] = this.world.pxmi(value); } }); /** * @name Phaser.Physics.P2.InversePointProxy#mx * @property {number} mx - The x property of this InversePointProxy get and set in meters. */ Object.defineProperty(Phaser.Physics.P2.InversePointProxy.prototype, "mx", { get: function () { return this.destination[0]; }, set: function (value) { this.destination[0] = -value; } }); /** * @name Phaser.Physics.P2.InversePointProxy#my * @property {number} my - The y property of this InversePointProxy get and set in meters. */ Object.defineProperty(Phaser.Physics.P2.InversePointProxy.prototype, "my", { get: function () { return this.destination[1]; }, set: function (value) { this.destination[1] = -value; } }); /** * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ /** * The Physics Body is typically linked to a single Sprite and defines properties that determine how the physics body is simulated. * These properties affect how the body reacts to forces, what forces it generates on itself (to simulate friction), and how it reacts to collisions in the scene. * In most cases, the properties are used to simulate physical effects. Each body also has its own property values that determine exactly how it reacts to forces and collisions in the scene. * By default a single Rectangle shape is added to the Body that matches the dimensions of the parent Sprite. See addShape, removeShape, clearShapes to add extra shapes around the Body. * Note: When bound to a Sprite to avoid single-pixel jitters on mobile devices we strongly recommend using Sprite sizes that are even on both axis, i.e. 128x128 not 127x127. * Note: When a game object is given a P2 body it has its anchor x/y set to 0.5, so it becomes centered. * * @class Phaser.Physics.P2.Body * @constructor * @param {Phaser.Game} game - Game reference to the currently running game. * @param {Phaser.Sprite} [sprite] - The Sprite object this physics body belongs to. * @param {number} [x=0] - The x coordinate of this Body. * @param {number} [y=0] - The y coordinate of this Body. * @param {number} [mass=1] - The default mass of this Body (0 = static). */ Phaser.Physics.P2.Body = function (game, sprite, x, y, mass) { sprite = sprite || null; x = x || 0; y = y || 0; if (typeof mass === 'undefined') { mass = 1; } /** * @property {Phaser.Game} game - Local reference to game. */ this.game = game; /** * @property {Phaser.Physics.P2} world - Local reference to the P2 World. */ this.world = game.physics.p2; /** * @property {Phaser.Sprite} sprite - Reference to the parent Sprite. */ this.sprite = sprite; /** * @property {number} type - The type of physics system this body belongs to. */ this.type = Phaser.Physics.P2JS; /** * @property {Phaser.Point} offset - The offset of the Physics Body from the Sprite x/y position. */ this.offset = new Phaser.Point(); /** * @property {p2.Body} data - The p2 Body data. * @protected */ this.data = new p2.Body({ position: [ this.world.pxmi(x), this.world.pxmi(y) ], mass: mass }); this.data.parent = this; /** * @property {Phaser.Physics.P2.InversePointProxy} velocity - The velocity of the body. Set velocity.x to a negative value to move to the left, position to the right. velocity.y negative values move up, positive move down. */ this.velocity = new Phaser.Physics.P2.InversePointProxy(this.world, this.data.velocity); /** * @property {Phaser.Physics.P2.InversePointProxy} force - The force applied to the body. */ this.force = new Phaser.Physics.P2.InversePointProxy(this.world, this.data.force); /** * @property {Phaser.Point} gravity - A locally applied gravity force to the Body. Applied directly before the world step. NOTE: Not currently implemented. */ this.gravity = new Phaser.Point(); /** * Dispatched when a first contact is created between shapes in two bodies. This event is fired during the step, so collision has already taken place. * The event will be sent 4 parameters: The body it is in contact with, the shape from this body that caused the contact, the shape from the contact body and the contact equation data array. * @property {Phaser.Signal} onBeginContact */ this.onBeginContact = new Phaser.Signal(); /** * Dispatched when contact ends between shapes in two bodies. This event is fired during the step, so collision has already taken place. * The event will be sent 3 parameters: The body it is in contact with, the shape from this body that caused the contact and the shape from the contact body. * @property {Phaser.Signal} onEndContact */ this.onEndContact = new Phaser.Signal(); /** * @property {array} collidesWith - Array of CollisionGroups that this Bodies shapes collide with. */ this.collidesWith = []; /** * @property {boolean} removeNextStep - To avoid deleting this body during a physics step, and causing all kinds of problems, set removeNextStep to true to have it removed in the next preUpdate. */ this.removeNextStep = false; /** * @property {Phaser.Physics.P2.BodyDebug} debugBody - Reference to the debug body. */ this.debugBody = null; /** * @property {boolean} _collideWorldBounds - Internal var that determines if this Body collides with the world bounds or not. * @private */ this._collideWorldBounds = true; /** * @property {object} _bodyCallbacks - Array of Body callbacks. * @private */ this._bodyCallbacks = {}; /** * @property {object} _bodyCallbackContext - Array of Body callback contexts. * @private */ this._bodyCallbackContext = {}; /** * @property {object} _groupCallbacks - Array of Group callbacks. * @private */ this._groupCallbacks = {}; /** * @property {object} _bodyCallbackContext - Array of Grouo callback contexts. * @private */ this._groupCallbackContext = {}; // Set-up the default shape if (sprite) { this.setRectangleFromSprite(sprite); if (sprite.exists) { this.game.physics.p2.addBody(this); } } }; Phaser.Physics.P2.Body.prototype = { /** * Sets a callback to be fired any time a shape in this Body impacts with a shape in the given Body. The impact test is performed against body.id values. * The callback will be sent 4 parameters: This body, the body that impacted, the Shape in this body and the shape in the impacting body. * Note that the impact event happens after collision resolution, so it cannot be used to prevent a collision from happening. * It also happens mid-step. So do not destroy a Body during this callback, instead set safeDestroy to true so it will be killed on the next preUpdate. * * @method Phaser.Physics.P2.Body#createBodyCallback * @param {Phaser.Sprite|Phaser.TileSprite|Phaser.Physics.P2.Body|p2.Body} object - The object to send impact events for. * @param {function} callback - The callback to fire on impact. Set to null to clear a previously set callback. * @param {object} callbackContext - The context under which the callback will fire. */ createBodyCallback: function (object, callback, callbackContext) { var id = -1; if (object['id']) { id = object.id; } else if (object['body']) { id = object.body.id; } if (id > -1) { if (callback === null) { delete (this._bodyCallbacks[id]); delete (this._bodyCallbackContext[id]); } else { this._bodyCallbacks[id] = callback; this._bodyCallbackContext[id] = callbackContext; } } }, /** * Sets a callback to be fired any time this Body impacts with the given Group. The impact test is performed against shape.collisionGroup values. * The callback will be sent 4 parameters: This body, the body that impacted, the Shape in this body and the shape in the impacting body. * This callback will only fire if this Body has been assigned a collision group. * Note that the impact event happens after collision resolution, so it cannot be used to prevent a collision from happening. * It also happens mid-step. So do not destroy a Body during this callback, instead set safeDestroy to true so it will be killed on the next preUpdate. * * @method Phaser.Physics.P2.Body#createGroupCallback * @param {Phaser.Physics.CollisionGroup} group - The Group to send impact events for. * @param {function} callback - The callback to fire on impact. Set to null to clear a previously set callback. * @param {object} callbackContext - The context under which the callback will fire. */ createGroupCallback: function (group, callback, callbackContext) { if (callback === null) { delete (this._groupCallbacks[group.mask]); delete (this._groupCallbacksContext[group.mask]); } else { this._groupCallbacks[group.mask] = callback; this._groupCallbackContext[group.mask] = callbackContext; } }, /** * Gets the collision bitmask from the groups this body collides with. * * @method Phaser.Physics.P2.Body#getCollisionMask * @return {number} The bitmask. */ getCollisionMask: function () { var mask = 0; if (this._collideWorldBounds) { mask = this.game.physics.p2.boundsCollisionGroup.mask; } for (var i = 0; i < this.collidesWith.length; i++) { mask = mask | this.collidesWith[i].mask; } return mask; }, /** * Updates the collisionMask. * * @method Phaser.Physics.P2.Body#updateCollisionMask * @param {p2.Shape} [shape] - An optional Shape. If not provided the collision group will be added to all Shapes in this Body. */ updateCollisionMask: function (shape) { var mask = this.getCollisionMask(); if (typeof shape === 'undefined') { for (var i = this.data.shapes.length - 1; i >= 0; i--) { this.data.shapes[i].collisionMask = mask; } } else { shape.collisionMask = mask; } }, /** * Sets the given CollisionGroup to be the collision group for all shapes in this Body, unless a shape is specified. * This also resets the collisionMask. * * @method Phaser.Physics.P2.Body#setCollisionGroup * @param {Phaser.Physics.CollisionGroup} group - The Collision Group that this Bodies shapes will use. * @param {p2.Shape} [shape] - An optional Shape. If not provided the collision group will be added to all Shapes in this Body. */ setCollisionGroup: function (group, shape) { var mask = this.getCollisionMask(); if (typeof shape === 'undefined') { for (var i = this.data.shapes.length - 1; i >= 0; i--) { this.data.shapes[i].collisionGroup = group.mask; this.data.shapes[i].collisionMask = mask; } } else { shape.collisionGroup = group.mask; shape.collisionMask = mask; } }, /** * Clears the collision data from the shapes in this Body. Optionally clears Group and/or Mask. * * @method Phaser.Physics.P2.Body#clearCollision * @param {boolean} [clearGroup=true] - Clear the collisionGroup value from the shape/s? * @param {boolean} [clearMask=true] - Clear the collisionMask value from the shape/s? * @param {p2.Shape} [shape] - An optional Shape. If not provided the collision data will be cleared from all Shapes in this Body. */ clearCollision: function (clearGroup, clearMask, shape) { if (typeof shape === 'undefined') { for (var i = this.data.shapes.length - 1; i >= 0; i--) { if (clearGroup) { this.data.shapes[i].collisionGroup = null; } if (clearMask) { this.data.shapes[i].collisionMask = null; } } } else { if (clearGroup) { shape.collisionGroup = null; } if (clearMask) { shape.collisionMask = null; } } if (clearGroup) { this.collidesWith.length = 0; } }, /** * Adds the given CollisionGroup, or array of CollisionGroups, to the list of groups that this body will collide with and updates the collision masks. * * @method Phaser.Physics.P2.Body#collides * @param {Phaser.Physics.CollisionGroup|array} group - The Collision Group or Array of Collision Groups that this Bodies shapes will collide with. * @param {function} [callback] - Optional callback that will be triggered when this Body impacts with the given Group. * @param {object} [callbackContext] - The context under which the callback will be called. * @param {p2.Shape} [shape] - An optional Shape. If not provided the collision mask will be added to all Shapes in this Body. */ collides: function (group, callback, callbackContext, shape) { if (Array.isArray(group)) { for (var i = 0; i < group.length; i++) { if (this.collidesWith.indexOf(group[i]) === -1) { this.collidesWith.push(group[i]); if (callback) { this.createGroupCallback(group[i], callback, callbackContext); } } } } else { if (this.collidesWith.indexOf(group) === -1) { this.collidesWith.push(group); if (callback) { this.createGroupCallback(group, callback, callbackContext); } } } var mask = this.getCollisionMask(); if (typeof shape === 'undefined') { for (var i = this.data.shapes.length - 1; i >= 0; i--) { this.data.shapes[i].collisionMask = mask; } } else { shape.collisionMask = mask; } }, /** * Moves the shape offsets so their center of mass becomes the body center of mass. * * @method Phaser.Physics.P2.Body#adjustCenterOfMass */ adjustCenterOfMass: function () { this.data.adjustCenterOfMass(); }, /** * Apply damping, see http://code.google.com/p/bullet/issues/detail?id=74 for details. * * @method Phaser.Physics.P2.Body#applyDamping * @param {number} dt - Current time step. */ applyDamping: function (dt) { this.data.applyDamping(dt); }, /** * Apply force to a world point. This could for example be a point on the RigidBody surface. Applying force this way will add to Body.force and Body.angularForce. * * @method Phaser.Physics.P2.Body#applyForce * @param {Float32Array|Array} force - The force vector to add. * @param {number} worldX - The world x point to apply the force on. * @param {number} worldY - The world y point to apply the force on. */ applyForce: function (force, worldX, worldY) { this.data.applyForce(force, [this.world.pxmi(worldX), this.world.pxmi(worldY)]); }, /** * Sets the force on the body to zero. * * @method Phaser.Physics.P2.Body#setZeroForce */ setZeroForce: function () { this.data.setZeroForce(); }, /** * If this Body is dynamic then this will zero its angular velocity. * * @method Phaser.Physics.P2.Body#setZeroRotation */ setZeroRotation: function () { this.data.angularVelocity = 0; }, /** * If this Body is dynamic then this will zero its velocity on both axis. * * @method Phaser.Physics.P2.Body#setZeroVelocity */ setZeroVelocity: function () { this.data.velocity[0] = 0; this.data.velocity[1] = 0; }, /** * Sets the Body damping and angularDamping to zero. * * @method Phaser.Physics.P2.Body#setZeroDamping */ setZeroDamping: function () { this.data.damping = 0; this.data.angularDamping = 0; }, /** * Transform a world point to local body frame. * * @method Phaser.Physics.P2.Body#toLocalFrame * @param {Float32Array|Array} out - The vector to store the result in. * @param {Float32Array|Array} worldPoint - The input world vector. */ toLocalFrame: function (out, worldPoint) { return this.data.toLocalFrame(out, worldPoint); }, /** * Transform a local point to world frame. * * @method Phaser.Physics.P2.Body#toWorldFrame * @param {Array} out - The vector to store the result in. * @param {Array} localPoint - The input local vector. */ toWorldFrame: function (out, localPoint) { return this.data.toWorldFrame(out, localPoint); }, /** * This will rotate the Body by the given speed to the left (counter-clockwise). * * @method Phaser.Physics.P2.Body#rotateLeft * @param {number} speed - The speed at which it should rotate. */ rotateLeft: function (speed) { this.data.angularVelocity = this.world.pxm(-speed); }, /** * This will rotate the Body by the given speed to the left (clockwise). * * @method Phaser.Physics.P2.Body#rotateRight * @param {number} speed - The speed at which it should rotate. */ rotateRight: function (speed) { this.data.angularVelocity = this.world.pxm(speed); }, /** * Moves the Body forwards based on its current angle and the given speed. * The speed is represented in pixels per second. So a value of 100 would move 100 pixels in 1 second (1000ms). * * @method Phaser.Physics.P2.Body#moveForward * @param {number} speed - The speed at which it should move forwards. */ moveForward: function (speed) { var magnitude = this.world.pxmi(-speed); var angle = this.data.angle + Math.PI / 2; this.data.velocity[0] = magnitude * Math.cos(angle); this.data.velocity[1] = magnitude * Math.sin(angle); }, /** * Moves the Body backwards based on its current angle and the given speed. * The speed is represented in pixels per second. So a value of 100 would move 100 pixels in 1 second (1000ms). * * @method Phaser.Physics.P2.Body#moveBackward * @param {number} speed - The speed at which it should move backwards. */ moveBackward: function (speed) { var magnitude = this.world.pxmi(-speed); var angle = this.data.angle + Math.PI / 2; this.data.velocity[0] = -(magnitude * Math.cos(angle)); this.data.velocity[1] = -(magnitude * Math.sin(angle)); }, /** * Applies a force to the Body that causes it to 'thrust' forwards, based on its current angle and the given speed. * The speed is represented in pixels per second. So a value of 100 would move 100 pixels in 1 second (1000ms). * * @method Phaser.Physics.P2.Body#thrust * @param {number} speed - The speed at which it should thrust. */ thrust: function (speed) { var magnitude = this.world.pxmi(-speed); var angle = this.data.angle + Math.PI / 2; this.data.force[0] += magnitude * Math.cos(angle); this.data.force[1] += magnitude * Math.sin(angle); }, /** * Applies a force to the Body that causes it to 'thrust' backwards (in reverse), based on its current angle and the given speed. * The speed is represented in pixels per second. So a value of 100 would move 100 pixels in 1 second (1000ms). * * @method Phaser.Physics.P2.Body#reverse * @param {number} speed - The speed at which it should reverse. */ reverse: function (speed) { var magnitude = this.world.pxmi(-speed); var angle = this.data.angle + Math.PI / 2; this.data.force[0] -= magnitude * Math.cos(angle); this.data.force[1] -= magnitude * Math.sin(angle); }, /** * If this Body is dynamic then this will move it to the left by setting its x velocity to the given speed. * The speed is represented in pixels per second. So a value of 100 would move 100 pixels in 1 second (1000ms). * * @method Phaser.Physics.P2.Body#moveLeft * @param {number} speed - The speed at which it should move to the left, in pixels per second. */ moveLeft: function (speed) { this.data.velocity[0] = this.world.pxmi(-speed); }, /** * If this Body is dynamic then this will move it to the right by setting its x velocity to the given speed. * The speed is represented in pixels per second. So a value of 100 would move 100 pixels in 1 second (1000ms). * * @method Phaser.Physics.P2.Body#moveRight * @param {number} speed - The speed at which it should move to the right, in pixels per second. */ moveRight: function (speed) { this.data.velocity[0] = this.world.pxmi(speed); }, /** * If this Body is dynamic then this will move it up by setting its y velocity to the given speed. * The speed is represented in pixels per second. So a value of 100 would move 100 pixels in 1 second (1000ms). * * @method Phaser.Physics.P2.Body#moveUp * @param {number} speed - The speed at which it should move up, in pixels per second. */ moveUp: function (speed) { this.data.velocity[1] = this.world.pxmi(-speed); }, /** * If this Body is dynamic then this will move it down by setting its y velocity to the given speed. * The speed is represented in pixels per second. So a value of 100 would move 100 pixels in 1 second (1000ms). * * @method Phaser.Physics.P2.Body#moveDown * @param {number} speed - The speed at which it should move down, in pixels per second. */ moveDown: function (speed) { this.data.velocity[1] = this.world.pxmi(speed); }, /** * Internal method. This is called directly before the sprites are sent to the renderer and after the update function has finished. * * @method Phaser.Physics.P2.Body#preUpdate * @protected */ preUpdate: function () { if (this.removeNextStep) { this.removeFromWorld(); this.removeNextStep = false; } }, /** * Internal method. This is called directly before the sprites are sent to the renderer and after the update function has finished. * * @method Phaser.Physics.P2.Body#postUpdate * @protected */ postUpdate: function () { this.sprite.x = this.world.mpxi(this.data.position[0]); this.sprite.y = this.world.mpxi(this.data.position[1]); if (!this.fixedRotation) { this.sprite.rotation = this.data.angle; } if (this.debugBody) { this.debugBody.updateSpriteTransform(); } }, /** * Resets the Body force, velocity (linear and angular) and rotation. Optionally resets damping and mass. * * @method Phaser.Physics.P2.Body#reset * @param {number} x - The new x position of the Body. * @param {number} y - The new x position of the Body. * @param {boolean} [resetDamping=false] - Resets the linear and angular damping. * @param {boolean} [resetMass=false] - Sets the Body mass back to 1. */ reset: function (x, y, resetDamping, resetMass) { if (typeof resetDamping === 'undefined') { resetDamping = false; } if (typeof resetMass === 'undefined') { resetMass = false; } this.setZeroForce(); this.setZeroVelocity(); this.setZeroRotation(); if (resetDamping) { this.setZeroDamping(); } if (resetMass) { this.mass = 1; } this.x = x; this.y = y; }, /** * Adds this physics body to the world. * * @method Phaser.Physics.P2.Body#addToWorld */ addToWorld: function () { if (this.game.physics.p2._toRemove) { for (var i = 0; i < this.game.physics.p2._toRemove.length; i++) { if (this.game.physics.p2._toRemove[i] === this) { this.game.physics.p2._toRemove.splice(i, 1); } } } if (this.data.world !== this.game.physics.p2.world) { this.game.physics.p2.addBody(this); } }, /** * Removes this physics body from the world. * * @method Phaser.Physics.P2.Body#removeFromWorld */ removeFromWorld: function () { if (this.data.world === this.game.physics.p2.world) { this.game.physics.p2.removeBodyNextStep(this); } }, /** * Destroys this Body and all references it holds to other objects. * * @method Phaser.Physics.P2.Body#destroy */ destroy: function () { this.removeFromWorld(); this.clearShapes(); this._bodyCallbacks = {}; this._bodyCallbackContext = {}; this._groupCallbacks = {}; this._groupCallbackContext = {}; if (this.debugBody) { this.debugBody.destroy(true, true); } this.debugBody = null; this.sprite.body = null; this.sprite = null; }, /** * Removes all Shapes from this Body. * * @method Phaser.Physics.P2.Body#clearShapes */ clearShapes: function () { var i = this.data.shapes.length; while (i--) { this.data.removeShape(this.data.shapes[i]); } this.shapeChanged(); }, /** * Add a shape to the body. You can pass a local transform when adding a shape, so that the shape gets an offset and an angle relative to the body center of mass. * Will automatically update the mass properties and bounding radius. * * @method Phaser.Physics.P2.Body#addShape * @param {p2.Shape} shape - The shape to add to the body. * @param {number} [offsetX=0] - Local horizontal offset of the shape relative to the body center of mass. * @param {number} [offsetY=0] - Local vertical offset of the shape relative to the body center of mass. * @param {number} [rotation=0] - Local rotation of the shape relative to the body center of mass, specified in radians. * @return {p2.Shape} The shape that was added to the body. */ addShape: function (shape, offsetX, offsetY, rotation) { if (typeof offsetX === 'undefined') { offsetX = 0; } if (typeof offsetY === 'undefined') { offsetY = 0; } if (typeof rotation === 'undefined') { rotation = 0; } this.data.addShape(shape, [this.world.pxmi(offsetX), this.world.pxmi(offsetY)], rotation); this.shapeChanged(); return shape; }, /** * Adds a Circle shape to this Body. You can control the offset from the center of the body and the rotation. * * @method Phaser.Physics.P2.Body#addCircle * @param {number} radius - The radius of this circle (in pixels) * @param {number} [offsetX=0] - Local horizontal offset of the shape relative to the body center of mass. * @param {number} [offsetY=0] - Local vertical offset of the shape relative to the body center of mass. * @param {number} [rotation=0] - Local rotation of the shape relative to the body center of mass, specified in radians. * @return {p2.Circle} The Circle shape that was added to the Body. */ addCircle: function (radius, offsetX, offsetY, rotation) { var shape = new p2.Circle(this.world.pxm(radius)); return this.addShape(shape, offsetX, offsetY, rotation); }, /** * Adds a Rectangle shape to this Body. You can control the offset from the center of the body and the rotation. * * @method Phaser.Physics.P2.Body#addRectangle * @param {number} width - The width of the rectangle in pixels. * @param {number} height - The height of the rectangle in pixels. * @param {number} [offsetX=0] - Local horizontal offset of the shape relative to the body center of mass. * @param {number} [offsetY=0] - Local vertical offset of the shape relative to the body center of mass. * @param {number} [rotation=0] - Local rotation of the shape relative to the body center of mass, specified in radians. * @return {p2.Rectangle} The Rectangle shape that was added to the Body. */ addRectangle: function (width, height, offsetX, offsetY, rotation) { var shape = new p2.Rectangle(this.world.pxm(width), this.world.pxm(height)); return this.addShape(shape, offsetX, offsetY, rotation); }, /** * Adds a Plane shape to this Body. The plane is facing in the Y direction. You can control the offset from the center of the body and the rotation. * * @method Phaser.Physics.P2.Body#addPlane * @param {number} [offsetX=0] - Local horizontal offset of the shape relative to the body center of mass. * @param {number} [offsetY=0] - Local vertical offset of the shape relative to the body center of mass. * @param {number} [rotation=0] - Local rotation of the shape relative to the body center of mass, specified in radians. * @return {p2.Plane} The Plane shape that was added to the Body. */ addPlane: function (offsetX, offsetY, rotation) { var shape = new p2.Plane(); return this.addShape(shape, offsetX, offsetY, rotation); }, /** * Adds a Particle shape to this Body. You can control the offset from the center of the body and the rotation. * * @method Phaser.Physics.P2.Body#addParticle * @param {number} [offsetX=0] - Local horizontal offset of the shape relative to the body center of mass. * @param {number} [offsetY=0] - Local vertical offset of the shape relative to the body center of mass. * @param {number} [rotation=0] - Local rotation of the shape relative to the body center of mass, specified in radians. * @return {p2.Particle} The Particle shape that was added to the Body. */ addParticle: function (offsetX, offsetY, rotation) { var shape = new p2.Particle(); return this.addShape(shape, offsetX, offsetY, rotation); }, /** * Adds a Line shape to this Body. * The line shape is along the x direction, and stretches from [-length/2, 0] to [length/2,0]. * You can control the offset from the center of the body and the rotation. * * @method Phaser.Physics.P2.Body#addLine * @param {number} length - The length of this line (in pixels) * @param {number} [offsetX=0] - Local horizontal offset of the shape relative to the body center of mass. * @param {number} [offsetY=0] - Local vertical offset of the shape relative to the body center of mass. * @param {number} [rotation=0] - Local rotation of the shape relative to the body center of mass, specified in radians. * @return {p2.Line} The Line shape that was added to the Body. */ addLine: function (length, offsetX, offsetY, rotation) { var shape = new p2.Line(this.world.pxm(length)); return this.addShape(shape, offsetX, offsetY, rotation); }, /** * Adds a Capsule shape to this Body. * You can control the offset from the center of the body and the rotation. * * @method Phaser.Physics.P2.Body#addCapsule * @param {number} length - The distance between the end points in pixels. * @param {number} radius - Radius of the capsule in pixels. * @param {number} [offsetX=0] - Local horizontal offset of the shape relative to the body center of mass. * @param {number} [offsetY=0] - Local vertical offset of the shape relative to the body center of mass. * @param {number} [rotation=0] - Local rotation of the shape relative to the body center of mass, specified in radians. * @return {p2.Capsule} The Capsule shape that was added to the Body. */ addCapsule: function (length, radius, offsetX, offsetY, rotation) { var shape = new p2.Capsule(this.world.pxm(length), this.world.pxm(radius)); return this.addShape(shape, offsetX, offsetY, rotation); }, /** * Reads a polygon shape path, and assembles convex shapes from that and puts them at proper offset points. The shape must be simple and without holes. * This function expects the x.y values to be given in pixels. If you want to provide them at p2 world scales then call Body.data.fromPolygon directly. * * @method Phaser.Physics.P2.Body#addPolygon * @param {object} options - An object containing the build options: * @param {boolean} [options.optimalDecomp=false] - Set to true if you need optimal decomposition. Warning: very slow for polygons with more than 10 vertices. * @param {boolean} [options.skipSimpleCheck=false] - Set to true if you already know that the path is not intersecting itself. * @param {boolean|number} [options.removeCollinearPoints=false] - Set to a number (angle threshold value) to remove collinear points, or false to keep all points. * @param {(number[]|...number)} points - An array of 2d vectors that form the convex or concave polygon. * Either [[0,0], [0,1],...] or a flat array of numbers that will be interpreted as [x,y, x,y, ...], * or the arguments passed can be flat x,y values e.g. `setPolygon(options, x,y, x,y, x,y, ...)` where `x` and `y` are numbers. * @return {boolean} True on success, else false. */ addPolygon: function (options, points) { options = options || {}; if (!Array.isArray(points)) { points = Array.prototype.slice.call(arguments, 1); } var path = []; // Did they pass in a single array of points? if (points.length === 1 && Array.isArray(points[0])) { path = points[0].slice(0); } else if (Array.isArray(points[0])) { path = points.slice(); } else if (typeof points[0] === 'number') { // We've a list of numbers for (var i = 0, len = points.length; i < len; i += 2) { path.push([points[i], points[i + 1]]); } } // top and tail var idx = path.length - 1; if (path[idx][0] === path[0][0] && path[idx][1] === path[0][1]) { path.pop(); } // Now process them into p2 values for (var p = 0; p < path.length; p++) { path[p][0] = this.world.pxmi(path[p][0]); path[p][1] = this.world.pxmi(path[p][1]); } var result = this.data.fromPolygon(path, options); this.shapeChanged(); return result; }, /** * Remove a shape from the body. Will automatically update the mass properties and bounding radius. * * @method Phaser.Physics.P2.Body#removeShape * @param {p2.Circle|p2.Rectangle|p2.Plane|p2.Line|p2.Particle} shape - The shape to remove from the body. * @return {boolean} True if the shape was found and removed, else false. */ removeShape: function (shape) { var result = this.data.removeShape(shape); this.shapeChanged(); return result; }, /** * Clears any previously set shapes. Then creates a new Circle shape and adds it to this Body. * * @method Phaser.Physics.P2.Body#setCircle * @param {number} radius - The radius of this circle (in pixels) * @param {number} [offsetX=0] - Local horizontal offset of the shape relative to the body center of mass. * @param {number} [offsetY=0] - Local vertical offset of the shape relative to the body center of mass. * @param {number} [rotation=0] - Local rotation of the shape relative to the body center of mass, specified in radians. */ setCircle: function (radius, offsetX, offsetY, rotation) { this.clearShapes(); return this.addCircle(radius, offsetX, offsetY, rotation); }, /** * Clears any previously set shapes. The creates a new Rectangle shape at the given size and offset, and adds it to this Body. * If you wish to create a Rectangle to match the size of a Sprite or Image see Body.setRectangleFromSprite. * * @method Phaser.Physics.P2.Body#setRectangle * @param {number} [width=16] - The width of the rectangle in pixels. * @param {number} [height=16] - The height of the rectangle in pixels. * @param {number} [offsetX=0] - Local horizontal offset of the shape relative to the body center of mass. * @param {number} [offsetY=0] - Local vertical offset of the shape relative to the body center of mass. * @param {number} [rotation=0] - Local rotation of the shape relative to the body center of mass, specified in radians. * @return {p2.Rectangle} The Rectangle shape that was added to the Body. */ setRectangle: function (width, height, offsetX, offsetY, rotation) { if (typeof width === 'undefined') { width = 16; } if (typeof height === 'undefined') { height = 16; } this.clearShapes(); return this.addRectangle(width, height, offsetX, offsetY, rotation); }, /** * Clears any previously set shapes. * Then creates a Rectangle shape sized to match the dimensions and orientation of the Sprite given. * If no Sprite is given it defaults to using the parent of this Body. * * @method Phaser.Physics.P2.Body#setRectangleFromSprite * @param {Phaser.Sprite|Phaser.Image} [sprite] - The Sprite on which the Rectangle will get its dimensions. * @return {p2.Rectangle} The Rectangle shape that was added to the Body. */ setRectangleFromSprite: function (sprite) { if (typeof sprite === 'undefined') { sprite = this.sprite; } this.clearShapes(); return this.addRectangle(sprite.width, sprite.height, 0, 0, sprite.rotation); }, /** * Adds the given Material to all Shapes that belong to this Body. * If you only wish to apply it to a specific Shape in this Body then provide that as the 2nd parameter. * * @method Phaser.Physics.P2.Body#setMaterial * @param {Phaser.Physics.P2.Material} material - The Material that will be applied. * @param {p2.Shape} [shape] - An optional Shape. If not provided the Material will be added to all Shapes in this Body. */ setMaterial: function (material, shape) { if (typeof shape === 'undefined') { for (var i = this.data.shapes.length - 1; i >= 0; i--) { this.data.shapes[i].material = material; } } else { shape.material = material; } }, /** * Updates the debug draw if any body shapes change. * * @method Phaser.Physics.P2.Body#shapeChanged */ shapeChanged: function() { if (this.debugBody) { this.debugBody.draw(); } }, /** * Reads the shape data from a physics data file stored in the Game.Cache and adds it as a polygon to this Body. * The shape data format is based on the custom phaser export in. * * @method Phaser.Physics.P2.Body#addPhaserPolygon * @param {string} key - The key of the Physics Data file as stored in Game.Cache. * @param {string} object - The key of the object within the Physics data file that you wish to load the shape data from. */ addPhaserPolygon: function (key, object) { var data = this.game.cache.getPhysicsData(key, object); var createdFixtures = []; // Cycle through the fixtures for (var i = 0; i < data.length; i++) { var fixtureData = data[i]; var shapesOfFixture = this.addFixture(fixtureData); // Always add to a group createdFixtures[fixtureData.filter.group] = createdFixtures[fixtureData.filter.group] || []; createdFixtures[fixtureData.filter.group] = createdFixtures[fixtureData.filter.group].concat(shapesOfFixture); // if (unique) fixture key is provided if (fixtureData.fixtureKey) { createdFixtures[fixtureData.fixtureKey] = shapesOfFixture; } } this.data.aabbNeedsUpdate = true; this.shapeChanged(); return createdFixtures; }, /** * Add a polygon fixture. This is used during #loadPolygon. * * @method Phaser.Physics.P2.Body#addFixture * @param {string} fixtureData - The data for the fixture. It contains: isSensor, filter (collision) and the actual polygon shapes. * @return {array} An array containing the generated shapes for the given polygon. */ addFixture: function (fixtureData) { var generatedShapes = []; if (fixtureData.circle) { var shape = new p2.Circle(this.world.pxm(fixtureData.circle.radius)); shape.collisionGroup = fixtureData.filter.categoryBits; shape.collisionMask = fixtureData.filter.maskBits; shape.sensor = fixtureData.isSensor; var offset = p2.vec2.create(); offset[0] = this.world.pxmi(fixtureData.circle.position[0] - this.sprite.width/2); offset[1] = this.world.pxmi(fixtureData.circle.position[1] - this.sprite.height/2); this.data.addShape(shape, offset); generatedShapes.push(shape); } else { var polygons = fixtureData.polygons; var cm = p2.vec2.create(); for (var i = 0; i < polygons.length; i++) { var shapes = polygons[i]; var vertices = []; for (var s = 0; s < shapes.length; s += 2) { vertices.push([ this.world.pxmi(shapes[s]), this.world.pxmi(shapes[s + 1]) ]); } var shape = new p2.Convex(vertices); // Move all vertices so its center of mass is in the local center of the convex for (var j = 0; j !== shape.vertices.length; j++) { var v = shape.vertices[j]; p2.vec2.sub(v, v, shape.centerOfMass); } p2.vec2.scale(cm, shape.centerOfMass, 1); cm[0] -= this.world.pxmi(this.sprite.width / 2); cm[1] -= this.world.pxmi(this.sprite.height / 2); shape.updateTriangles(); shape.updateCenterOfMass(); shape.updateBoundingRadius(); shape.collisionGroup = fixtureData.filter.categoryBits; shape.collisionMask = fixtureData.filter.maskBits; shape.sensor = fixtureData.isSensor; this.data.addShape(shape, cm); generatedShapes.push(shape); } } return generatedShapes; }, /** * Reads the shape data from a physics data file stored in the Game.Cache and adds it as a polygon to this Body. * * @method Phaser.Physics.P2.Body#loadPolygon * @param {string} key - The key of the Physics Data file as stored in Game.Cache. * @param {string} object - The key of the object within the Physics data file that you wish to load the shape data from. * @return {boolean} True on success, else false. */ loadPolygon: function (key, object) { var data = this.game.cache.getPhysicsData(key, object); // We've multiple Convex shapes, they should be CCW automatically var cm = p2.vec2.create(); for (var i = 0; i < data.length; i++) { var vertices = []; for (var s = 0; s < data[i].shape.length; s += 2) { vertices.push([ this.world.pxmi(data[i].shape[s]), this.world.pxmi(data[i].shape[s + 1]) ]); } var c = new p2.Convex(vertices); // Move all vertices so its center of mass is in the local center of the convex for (var j = 0; j !== c.vertices.length; j++) { var v = c.vertices[j]; p2.vec2.sub(v, v, c.centerOfMass); } p2.vec2.scale(cm, c.centerOfMass, 1); cm[0] -= this.world.pxmi(this.sprite.width / 2); cm[1] -= this.world.pxmi(this.sprite.height / 2); c.updateTriangles(); c.updateCenterOfMass(); c.updateBoundingRadius(); this.data.addShape(c, cm); } this.data.aabbNeedsUpdate = true; this.shapeChanged(); return true; } }; Phaser.Physics.P2.Body.prototype.constructor = Phaser.Physics.P2.Body; /** * Dynamic body. Dynamic bodies body can move and respond to collisions and forces. * @property DYNAMIC * @type {Number} * @static */ Phaser.Physics.P2.Body.DYNAMIC = 1; /** * Static body. Static bodies do not move, and they do not respond to forces or collision. * @property STATIC * @type {Number} * @static */ Phaser.Physics.P2.Body.STATIC = 2; /** * Kinematic body. Kinematic bodies only moves according to its .velocity, and does not respond to collisions or force. * @property KINEMATIC * @type {Number} * @static */ Phaser.Physics.P2.Body.KINEMATIC = 4; /** * @name Phaser.Physics.P2.Body#static * @property {boolean} static - Returns true if the Body is static. Setting Body.static to 'false' will make it dynamic. */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "static", { get: function () { return (this.data.type === Phaser.Physics.P2.Body.STATIC); }, set: function (value) { if (value && this.data.type !== Phaser.Physics.P2.Body.STATIC) { this.data.type = Phaser.Physics.P2.Body.STATIC; this.mass = 0; } else if (!value && this.data.type === Phaser.Physics.P2.Body.STATIC) { this.data.type = Phaser.Physics.P2.Body.DYNAMIC; if (this.mass === 0) { this.mass = 1; } } } }); /** * @name Phaser.Physics.P2.Body#dynamic * @property {boolean} dynamic - Returns true if the Body is dynamic. Setting Body.dynamic to 'false' will make it static. */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "dynamic", { get: function () { return (this.data.type === Phaser.Physics.P2.Body.DYNAMIC); }, set: function (value) { if (value && this.data.type !== Phaser.Physics.P2.Body.DYNAMIC) { this.data.type = Phaser.Physics.P2.Body.DYNAMIC; if (this.mass === 0) { this.mass = 1; } } else if (!value && this.data.type === Phaser.Physics.P2.Body.DYNAMIC) { this.data.type = Phaser.Physics.P2.Body.STATIC; this.mass = 0; } } }); /** * @name Phaser.Physics.P2.Body#kinematic * @property {boolean} kinematic - Returns true if the Body is kinematic. Setting Body.kinematic to 'false' will make it static. */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "kinematic", { get: function () { return (this.data.type === Phaser.Physics.P2.Body.KINEMATIC); }, set: function (value) { if (value && this.data.type !== Phaser.Physics.P2.Body.KINEMATIC) { this.data.type = Phaser.Physics.P2.Body.KINEMATIC; this.mass = 4; } else if (!value && this.data.type === Phaser.Physics.P2.Body.KINEMATIC) { this.data.type = Phaser.Physics.P2.Body.STATIC; this.mass = 0; } } }); /** * @name Phaser.Physics.P2.Body#allowSleep * @property {boolean} allowSleep - */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "allowSleep", { get: function () { return this.data.allowSleep; }, set: function (value) { if (value !== this.data.allowSleep) { this.data.allowSleep = value; } } }); /** * The angle of the Body in degrees from its original orientation. Values from 0 to 180 represent clockwise rotation; values from 0 to -180 represent counterclockwise rotation. * Values outside this range are added to or subtracted from 360 to obtain a value within the range. For example, the statement Body.angle = 450 is the same as Body.angle = 90. * If you wish to work in radians instead of degrees use the property Body.rotation instead. Working in radians is faster as it doesn't have to convert values. * * @name Phaser.Physics.P2.Body#angle * @property {number} angle - The angle of this Body in degrees. */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "angle", { get: function() { return Phaser.Math.wrapAngle(Phaser.Math.radToDeg(this.data.angle)); }, set: function(value) { this.data.angle = Phaser.Math.degToRad(Phaser.Math.wrapAngle(value)); } }); /** * Damping is specified as a value between 0 and 1, which is the proportion of velocity lost per second. * @name Phaser.Physics.P2.Body#angularDamping * @property {number} angularDamping - The angular damping acting acting on the body. */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "angularDamping", { get: function () { return this.data.angularDamping; }, set: function (value) { this.data.angularDamping = value; } }); /** * @name Phaser.Physics.P2.Body#angularForce * @property {number} angularForce - The angular force acting on the body. */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "angularForce", { get: function () { return this.data.angularForce; }, set: function (value) { this.data.angularForce = value; } }); /** * @name Phaser.Physics.P2.Body#angularVelocity * @property {number} angularVelocity - The angular velocity of the body. */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "angularVelocity", { get: function () { return this.data.angularVelocity; }, set: function (value) { this.data.angularVelocity = value; } }); /** * Damping is specified as a value between 0 and 1, which is the proportion of velocity lost per second. * @name Phaser.Physics.P2.Body#damping * @property {number} damping - The linear damping acting on the body in the velocity direction. */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "damping", { get: function () { return this.data.damping; }, set: function (value) { this.data.damping = value; } }); /** * @name Phaser.Physics.P2.Body#fixedRotation * @property {boolean} fixedRotation - */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "fixedRotation", { get: function () { return this.data.fixedRotation; }, set: function (value) { if (value !== this.data.fixedRotation) { this.data.fixedRotation = value; } } }); /** * @name Phaser.Physics.P2.Body#inertia * @property {number} inertia - The inertia of the body around the Z axis.. */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "inertia", { get: function () { return this.data.inertia; }, set: function (value) { this.data.inertia = value; } }); /** * @name Phaser.Physics.P2.Body#mass * @property {number} mass - */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "mass", { get: function () { return this.data.mass; }, set: function (value) { if (value !== this.data.mass) { this.data.mass = value; this.data.updateMassProperties(); } } }); /** * @name Phaser.Physics.P2.Body#motionState * @property {number} motionState - The type of motion this body has. Should be one of: Body.STATIC (the body does not move), Body.DYNAMIC (body can move and respond to collisions) and Body.KINEMATIC (only moves according to its .velocity). */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "motionState", { get: function () { return this.data.type; }, set: function (value) { if (value !== this.data.type) { this.data.type = value; } } }); /** * The angle of the Body in radians. * If you wish to work in degrees instead of radians use the Body.angle property instead. Working in radians is faster as it doesn't have to convert values. * * @name Phaser.Physics.P2.Body#rotation * @property {number} rotation - The angle of this Body in radians. */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "rotation", { get: function() { return this.data.angle; }, set: function(value) { this.data.angle = value; } }); /** * @name Phaser.Physics.P2.Body#sleepSpeedLimit * @property {number} sleepSpeedLimit - . */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "sleepSpeedLimit", { get: function () { return this.data.sleepSpeedLimit; }, set: function (value) { this.data.sleepSpeedLimit = value; } }); /** * @name Phaser.Physics.P2.Body#x * @property {number} x - The x coordinate of this Body. */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "x", { get: function () { return this.world.mpxi(this.data.position[0]); }, set: function (value) { this.data.position[0] = this.world.pxmi(value); } }); /** * @name Phaser.Physics.P2.Body#y * @property {number} y - The y coordinate of this Body. */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "y", { get: function () { return this.world.mpxi(this.data.position[1]); }, set: function (value) { this.data.position[1] = this.world.pxmi(value); } }); /** * @name Phaser.Physics.P2.Body#id * @property {number} id - The Body ID. Each Body that has been added to the World has a unique ID. * @readonly */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "id", { get: function () { return this.data.id; } }); /** * @name Phaser.Physics.P2.Body#debug * @property {boolean} debug - Enable or disable debug drawing of this body */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "debug", { get: function () { return (this.debugBody !== null); }, set: function (value) { if (value && !this.debugBody) { // This will be added to the global space this.debugBody = new Phaser.Physics.P2.BodyDebug(this.game, this.data); } else if (!value && this.debugBody) { this.debugBody.destroy(); this.debugBody = null; } } }); /** * A Body can be set to collide against the World bounds automatically if this is set to true. Otherwise it will leave the World. * Note that this only applies if your World has bounds! The response to the collision should be managed via CollisionMaterials. * Also note that when you set this it will only effect Body shapes that already exist. If you then add further shapes to your Body * after setting this it will *not* proactively set them to collide with the bounds. * * @name Phaser.Physics.P2.Body#collideWorldBounds * @property {boolean} collideWorldBounds - Should the Body collide with the World bounds? */ Object.defineProperty(Phaser.Physics.P2.Body.prototype, "collideWorldBounds", { get: function () { return this._collideWorldBounds; }, set: function (value) { if (value && !this._collideWorldBounds) { this._collideWorldBounds = true; this.updateCollisionMask(); } else if (!value && this._collideWorldBounds) { this._collideWorldBounds = false; this.updateCollisionMask(); } } }); /** * @author George https://github.com/georgiee * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ /** * Draws a P2 Body to a Graphics instance for visual debugging. * Needless to say, for every body you enable debug drawing on, you are adding processor and graphical overhead. * So use sparingly and rarely (if ever) in production code. * * @class Phaser.Physics.P2.BodyDebug * @constructor * @extends Phaser.Group * @param {Phaser.Game} game - Game reference to the currently running game. * @param {Phaser.Physics.P2.Body} body - The P2 Body to display debug data for. * @param {object} settings - Settings object. */ Phaser.Physics.P2.BodyDebug = function(game, body, settings) { Phaser.Group.call(this, game); /** * @property {object} defaultSettings - Default debug settings. * @private */ var defaultSettings = { pixelsPerLengthUnit: 20, debugPolygons: false, lineWidth: 1, alpha: 0.5 }; this.settings = Phaser.Utils.extend(defaultSettings, settings); /** * @property {number} ppu - Pixels per Length Unit. */ this.ppu = this.settings.pixelsPerLengthUnit; this.ppu = -1 * this.ppu; /** * @property {Phaser.Physics.P2.Body} body - The P2 Body to display debug data for. */ this.body = body; /** * @property {Phaser.Graphics} canvas - The canvas to render the debug info to. */ this.canvas = new Phaser.Graphics(game); this.canvas.alpha = this.settings.alpha; this.add(this.canvas); this.draw(); }; Phaser.Physics.P2.BodyDebug.prototype = Object.create(Phaser.Group.prototype); Phaser.Physics.P2.BodyDebug.prototype.constructor = Phaser.Physics.P2.BodyDebug; Phaser.Utils.extend(Phaser.Physics.P2.BodyDebug.prototype, { /** * Core update. * * @method Phaser.Physics.P2.BodyDebug#updateSpriteTransform */ updateSpriteTransform: function() { this.position.x = this.body.position[0] * this.ppu; this.position.y = this.body.position[1] * this.ppu; this.rotation = this.body.angle; }, /** * Draws the P2 shapes to the Graphics object. * * @method Phaser.Physics.P2.BodyDebug#draw */ draw: function() { var angle, child, color, i, j, lineColor, lw, obj, offset, sprite, v, verts, vrot, _j, _ref1; obj = this.body; sprite = this.canvas; sprite.clear(); color = parseInt(this.randomPastelHex(), 16); lineColor = 0xff0000; lw = this.lineWidth; if (obj instanceof p2.Body && obj.shapes.length) { var l = obj.shapes.length; i = 0; while (i !== l) { child = obj.shapes[i]; offset = obj.shapeOffsets[i]; angle = obj.shapeAngles[i]; offset = offset || 0; angle = angle || 0; if (child instanceof p2.Circle) { this.drawCircle(sprite, offset[0] * this.ppu, offset[1] * this.ppu, angle, child.radius * this.ppu, color, lw); } else if (child instanceof p2.Convex) { verts = []; vrot = p2.vec2.create(); for (j = _j = 0, _ref1 = child.vertices.length; 0 <= _ref1 ? _j < _ref1 : _j > _ref1; j = 0 <= _ref1 ? ++_j : --_j) { v = child.vertices[j]; p2.vec2.rotate(vrot, v, angle); verts.push([(vrot[0] + offset[0]) * this.ppu, -(vrot[1] + offset[1]) * this.ppu]); } this.drawConvex(sprite, verts, child.triangles, lineColor, color, lw, this.settings.debugPolygons, [offset[0] * this.ppu, -offset[1] * this.ppu]); } else if (child instanceof p2.Plane) { this.drawPlane(sprite, offset[0] * this.ppu, -offset[1] * this.ppu, color, lineColor, lw * 5, lw * 10, lw * 10, this.ppu * 100, angle); } else if (child instanceof p2.Line) { this.drawLine(sprite, child.length * this.ppu, lineColor, lw); } else if (child instanceof p2.Rectangle) { this.drawRectangle(sprite, offset[0] * this.ppu, -offset[1] * this.ppu, angle, child.width * this.ppu, child.height * this.ppu, lineColor, color, lw); } i++; } } }, /** * Draws the P2 shapes to the Graphics object. * * @method Phaser.Physics.P2.BodyDebug#draw */ drawRectangle: function(g, x, y, angle, w, h, color, fillColor, lineWidth) { if (typeof lineWidth === 'undefined') { lineWidth = 1; } if (typeof color === 'undefined') { color = 0x000000; } g.lineStyle(lineWidth, color, 1); g.beginFill(fillColor); g.drawRect(x - w / 2, y - h / 2, w, h); }, /** * Draws a P2 Circle shape. * * @method Phaser.Physics.P2.BodyDebug#drawCircle */ drawCircle: function(g, x, y, angle, radius, color, lineWidth) { if (typeof lineWidth === 'undefined') { lineWidth = 1; } if (typeof color === 'undefined') { color = 0xffffff; } g.lineStyle(lineWidth, 0x000000, 1); g.beginFill(color, 1.0); g.drawCircle(x, y, -radius*2); g.endFill(); g.moveTo(x, y); g.lineTo(x + radius * Math.cos(-angle), y + radius * Math.sin(-angle)); }, /** * Draws a P2 Line shape. * * @method Phaser.Physics.P2.BodyDebug#drawCircle */ drawLine: function(g, len, color, lineWidth) { if (typeof lineWidth === 'undefined') { lineWidth = 1; } if (typeof color === 'undefined') { color = 0x000000; } g.lineStyle(lineWidth * 5, color, 1); g.moveTo(-len / 2, 0); g.lineTo(len / 2, 0); }, /** * Draws a P2 Convex shape. * * @method Phaser.Physics.P2.BodyDebug#drawConvex */ drawConvex: function(g, verts, triangles, color, fillColor, lineWidth, debug, offset) { var colors, i, v, v0, v1, x, x0, x1, y, y0, y1; if (typeof lineWidth === 'undefined') { lineWidth = 1; } if (typeof color === 'undefined') { color = 0x000000; } if (!debug) { g.lineStyle(lineWidth, color, 1); g.beginFill(fillColor); i = 0; while (i !== verts.length) { v = verts[i]; x = v[0]; y = v[1]; if (i === 0) { g.moveTo(x, -y); } else { g.lineTo(x, -y); } i++; } g.endFill(); if (verts.length > 2) { g.moveTo(verts[verts.length - 1][0], -verts[verts.length - 1][1]); return g.lineTo(verts[0][0], -verts[0][1]); } } else { colors = [0xff0000, 0x00ff00, 0x0000ff]; i = 0; while (i !== verts.length + 1) { v0 = verts[i % verts.length]; v1 = verts[(i + 1) % verts.length]; x0 = v0[0]; y0 = v0[1]; x1 = v1[0]; y1 = v1[1]; g.lineStyle(lineWidth, colors[i % colors.length], 1); g.moveTo(x0, -y0); g.lineTo(x1, -y1); g.drawCircle(x0, -y0, lineWidth * 2); i++; } g.lineStyle(lineWidth, 0x000000, 1); return g.drawCircle(offset[0], offset[1], lineWidth * 2); } }, /** * Draws a P2 Path. * * @method Phaser.Physics.P2.BodyDebug#drawPath */ drawPath: function(g, path, color, fillColor, lineWidth) { var area, i, lastx, lasty, p1x, p1y, p2x, p2y, p3x, p3y, v, x, y; if (typeof lineWidth === 'undefined') { lineWidth = 1; } if (typeof color === 'undefined') { color = 0x000000; } g.lineStyle(lineWidth, color, 1); if (typeof fillColor === "number") { g.beginFill(fillColor); } lastx = null; lasty = null; i = 0; while (i < path.length) { v = path[i]; x = v[0]; y = v[1]; if (x !== lastx || y !== lasty) { if (i === 0) { g.moveTo(x, y); } else { p1x = lastx; p1y = lasty; p2x = x; p2y = y; p3x = path[(i + 1) % path.length][0]; p3y = path[(i + 1) % path.length][1]; area = ((p2x - p1x) * (p3y - p1y)) - ((p3x - p1x) * (p2y - p1y)); if (area !== 0) { g.lineTo(x, y); } } lastx = x; lasty = y; } i++; } if (typeof fillColor === "number") { g.endFill(); } if (path.length > 2 && typeof fillColor === "number") { g.moveTo(path[path.length - 1][0], path[path.length - 1][1]); g.lineTo(path[0][0], path[0][1]); } }, /** * Draws a P2 Plane shape. * * @method Phaser.Physics.P2.BodyDebug#drawPlane */ drawPlane: function(g, x0, x1, color, lineColor, lineWidth, diagMargin, diagSize, maxLength, angle) { var max, xd, yd; if (typeof lineWidth === 'undefined') { lineWidth = 1; } if (typeof color === 'undefined') { color = 0xffffff; } g.lineStyle(lineWidth, lineColor, 11); g.beginFill(color); max = maxLength; g.moveTo(x0, -x1); xd = x0 + Math.cos(angle) * this.game.width; yd = x1 + Math.sin(angle) * this.game.height; g.lineTo(xd, -yd); g.moveTo(x0, -x1); xd = x0 + Math.cos(angle) * -this.game.width; yd = x1 + Math.sin(angle) * -this.game.height; g.lineTo(xd, -yd); }, /** * Picks a random pastel color. * * @method Phaser.Physics.P2.BodyDebug#randomPastelHex */ randomPastelHex: function() { var blue, green, mix, red; mix = [255, 255, 255]; red = Math.floor(Math.random() * 256); green = Math.floor(Math.random() * 256); blue = Math.floor(Math.random() * 256); red = Math.floor((red + 3 * mix[0]) / 4); green = Math.floor((green + 3 * mix[1]) / 4); blue = Math.floor((blue + 3 * mix[2]) / 4); return this.rgbToHex(red, green, blue); }, /** * Converts from RGB to Hex. * * @method Phaser.Physics.P2.BodyDebug#rgbToHex */ rgbToHex: function(r, g, b) { return this.componentToHex(r) + this.componentToHex(g) + this.componentToHex(b); }, /** * Component to hex conversion. * * @method Phaser.Physics.P2.BodyDebug#componentToHex */ componentToHex: function(c) { var hex; hex = c.toString(16); if (hex.len === 2) { return hex; } else { return hex + '0'; } } }); /** * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ /** * Creates a linear spring, connecting two bodies. A spring can have a resting length, a stiffness and damping. * * @class Phaser.Physics.P2.Spring * @constructor * @param {Phaser.Physics.P2} world - A reference to the P2 World. * @param {p2.Body} bodyA - First connected body. * @param {p2.Body} bodyB - Second connected body. * @param {number} [restLength=1] - Rest length of the spring. A number > 0. * @param {number} [stiffness=100] - Stiffness of the spring. A number >= 0. * @param {number} [damping=1] - Damping of the spring. A number >= 0. * @param {Array} [worldA] - Where to hook the spring to body A in world coordinates. This value is an array with 2 elements matching x and y, i.e: [32, 32]. * @param {Array} [worldB] - Where to hook the spring to body B in world coordinates. This value is an array with 2 elements matching x and y, i.e: [32, 32]. * @param {Array} [localA] - Where to hook the spring to body A in local body coordinates. This value is an array with 2 elements matching x and y, i.e: [32, 32]. * @param {Array} [localB] - Where to hook the spring to body B in local body coordinates. This value is an array with 2 elements matching x and y, i.e: [32, 32]. */ Phaser.Physics.P2.Spring = function (world, bodyA, bodyB, restLength, stiffness, damping, worldA, worldB, localA, localB) { /** * @property {Phaser.Game} game - Local reference to game. */ this.game = world.game; /** * @property {Phaser.Physics.P2} world - Local reference to P2 World. */ this.world = world; if (typeof restLength === 'undefined') { restLength = 1; } if (typeof stiffness === 'undefined') { stiffness = 100; } if (typeof damping === 'undefined') { damping = 1; } restLength = world.pxm(restLength); var options = { restLength: restLength, stiffness: stiffness, damping: damping }; if (typeof worldA !== 'undefined' && worldA !== null) { options.worldAnchorA = [ world.pxm(worldA[0]), world.pxm(worldA[1]) ]; } if (typeof worldB !== 'undefined' && worldB !== null) { options.worldAnchorB = [ world.pxm(worldB[0]), world.pxm(worldB[1]) ]; } if (typeof localA !== 'undefined' && localA !== null) { options.localAnchorA = [ world.pxm(localA[0]), world.pxm(localA[1]) ]; } if (typeof localB !== 'undefined' && localB !== null) { options.localAnchorB = [ world.pxm(localB[0]), world.pxm(localB[1]) ]; } /** * @property {p2.LinearSpring} data - The actual p2 spring object. */ this.data = new p2.LinearSpring(bodyA, bodyB, options); this.data.parent = this; }; Phaser.Physics.P2.Spring.prototype.constructor = Phaser.Physics.P2.Spring; /** * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ /** * Creates a rotational spring, connecting two bodies. A spring can have a resting length, a stiffness and damping. * * @class Phaser.Physics.P2.RotationalSpring * @constructor * @param {Phaser.Physics.P2} world - A reference to the P2 World. * @param {p2.Body} bodyA - First connected body. * @param {p2.Body} bodyB - Second connected body. * @param {number} [restAngle] - The relative angle of bodies at which the spring is at rest. If not given, it's set to the current relative angle between the bodies. * @param {number} [stiffness=100] - Stiffness of the spring. A number >= 0. * @param {number} [damping=1] - Damping of the spring. A number >= 0. */ Phaser.Physics.P2.RotationalSpring = function (world, bodyA, bodyB, restAngle, stiffness, damping) { /** * @property {Phaser.Game} game - Local reference to game. */ this.game = world.game; /** * @property {Phaser.Physics.P2} world - Local reference to P2 World. */ this.world = world; if (typeof restAngle === 'undefined') { restAngle = null; } if (typeof stiffness === 'undefined') { stiffness = 100; } if (typeof damping === 'undefined') { damping = 1; } if (restAngle) { restAngle = world.pxm(restAngle); } var options = { restAngle: restAngle, stiffness: stiffness, damping: damping }; /** * @property {p2.RotationalSpring} data - The actual p2 spring object. */ this.data = new p2.RotationalSpring(bodyA, bodyB, options); this.data.parent = this; }; Phaser.Physics.P2.Spring.prototype.constructor = Phaser.Physics.P2.Spring; /** * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ /** * A P2 Material. * * \o/ ~ "Because I'm a Material girl" * * @class Phaser.Physics.P2.Material * @constructor * @param {string} name - The user defined name given to this Material. */ Phaser.Physics.P2.Material = function (name) { /** * @property {string} name - The user defined name given to this Material. * @default */ this.name = name; p2.Material.call(this); }; Phaser.Physics.P2.Material.prototype = Object.create(p2.Material.prototype); Phaser.Physics.P2.Material.prototype.constructor = Phaser.Physics.P2.Material; /** * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ /** * Defines a physics material * * @class Phaser.Physics.P2.ContactMaterial * @constructor * @param {Phaser.Physics.P2.Material} materialA - First material participating in the contact material. * @param {Phaser.Physics.P2.Material} materialB - Second material participating in the contact material. * @param {object} [options] - Additional configuration options. */ Phaser.Physics.P2.ContactMaterial = function (materialA, materialB, options) { /** * @property {number} id - The contact material identifier. */ /** * @property {Phaser.Physics.P2.Material} materialA - First material participating in the contact material. */ /** * @property {Phaser.Physics.P2.Material} materialB - Second material participating in the contact material. */ /** * @property {number} [friction=0.3] - Friction to use in the contact of these two materials. */ /** * @property {number} [restitution=0.0] - Restitution to use in the contact of these two materials. */ /** * @property {number} [stiffness=1e7] - Stiffness of the resulting ContactEquation that this ContactMaterial generate. */ /** * @property {number} [relaxation=3] - Relaxation of the resulting ContactEquation that this ContactMaterial generate. */ /** * @property {number} [frictionStiffness=1e7] - Stiffness of the resulting FrictionEquation that this ContactMaterial generate. */ /** * @property {number} [frictionRelaxation=3] - Relaxation of the resulting FrictionEquation that this ContactMaterial generate. */ /** * @property {number} [surfaceVelocity=0] - Will add surface velocity to this material. If bodyA rests on top if bodyB, and the surface velocity is positive, bodyA will slide to the right. */ p2.ContactMaterial.call(this, materialA, materialB, options); }; Phaser.Physics.P2.ContactMaterial.prototype = Object.create(p2.ContactMaterial.prototype); Phaser.Physics.P2.ContactMaterial.prototype.constructor = Phaser.Physics.P2.ContactMaterial; /** * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ /** * Collision Group * * @class Phaser.Physics.P2.CollisionGroup * @constructor * @param {number} bitmask - The CollisionGroup bitmask. */ Phaser.Physics.P2.CollisionGroup = function (bitmask) { /** * @property {number} mask - The CollisionGroup bitmask. */ this.mask = bitmask; }; /** * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ /** * A constraint that tries to keep the distance between two bodies constant. * * @class Phaser.Physics.P2.DistanceConstraint * @constructor * @param {Phaser.Physics.P2} world - A reference to the P2 World. * @param {p2.Body} bodyA - First connected body. * @param {p2.Body} bodyB - Second connected body. * @param {number} distance - The distance to keep between the bodies. * @param {Array} [localAnchorA] - The anchor point for bodyA, defined locally in bodyA frame. Defaults to [0,0]. * @param {Array} [localAnchorB] - The anchor point for bodyB, defined locally in bodyB frame. Defaults to [0,0]. * @param {object} [maxForce=Number.MAX_VALUE] - Maximum force to apply. */ Phaser.Physics.P2.DistanceConstraint = function (world, bodyA, bodyB, distance, localAnchorA, localAnchorB, maxForce) { if (typeof distance === 'undefined') { distance = 100; } if (typeof localAnchorA === 'undefined') { localAnchorA = [0, 0]; } if (typeof localAnchorB === 'undefined') { localAnchorB = [0, 0]; } if (typeof maxForce === 'undefined') { maxForce = Number.MAX_VALUE; } /** * @property {Phaser.Game} game - Local reference to game. */ this.game = world.game; /** * @property {Phaser.Physics.P2} world - Local reference to P2 World. */ this.world = world; distance = world.pxm(distance); localAnchorA = [ world.pxmi(localAnchorA[0]), world.pxmi(localAnchorA[1]) ]; localAnchorB = [ world.pxmi(localAnchorB[0]), world.pxmi(localAnchorB[1]) ]; var options = { distance: distance, localAnchorA: localAnchorA, localAnchorB: localAnchorB, maxForce: maxForce }; p2.DistanceConstraint.call(this, bodyA, bodyB, options); }; Phaser.Physics.P2.DistanceConstraint.prototype = Object.create(p2.DistanceConstraint.prototype); Phaser.Physics.P2.DistanceConstraint.prototype.constructor = Phaser.Physics.P2.DistanceConstraint; /** * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ /** * Connects two bodies at given offset points, letting them rotate relative to each other around this point. * * @class Phaser.Physics.P2.GearConstraint * @constructor * @param {Phaser.Physics.P2} world - A reference to the P2 World. * @param {p2.Body} bodyA - First connected body. * @param {p2.Body} bodyB - Second connected body. * @param {number} [angle=0] - The relative angle * @param {number} [ratio=1] - The gear ratio. */ Phaser.Physics.P2.GearConstraint = function (world, bodyA, bodyB, angle, ratio) { if (typeof angle === 'undefined') { angle = 0; } if (typeof ratio === 'undefined') { ratio = 1; } /** * @property {Phaser.Game} game - Local reference to game. */ this.game = world.game; /** * @property {Phaser.Physics.P2} world - Local reference to P2 World. */ this.world = world; var options = { angle: angle, ratio: ratio }; p2.GearConstraint.call(this, bodyA, bodyB, options); }; Phaser.Physics.P2.GearConstraint.prototype = Object.create(p2.GearConstraint.prototype); Phaser.Physics.P2.GearConstraint.prototype.constructor = Phaser.Physics.P2.GearConstraint; /** * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ /** * Locks the relative position between two bodies. * * @class Phaser.Physics.P2.LockConstraint * @constructor * @param {Phaser.Physics.P2} world - A reference to the P2 World. * @param {p2.Body} bodyA - First connected body. * @param {p2.Body} bodyB - Second connected body. * @param {Array} [offset] - The offset of bodyB in bodyA's frame. The value is an array with 2 elements matching x and y, i.e: [32, 32]. * @param {number} [angle=0] - The angle of bodyB in bodyA's frame. * @param {number} [maxForce] - The maximum force that should be applied to constrain the bodies. */ Phaser.Physics.P2.LockConstraint = function (world, bodyA, bodyB, offset, angle, maxForce) { if (typeof offset === 'undefined') { offset = [0, 0]; } if (typeof angle === 'undefined') { angle = 0; } if (typeof maxForce === 'undefined') { maxForce = Number.MAX_VALUE; } /** * @property {Phaser.Game} game - Local reference to game. */ this.game = world.game; /** * @property {Phaser.Physics.P2} world - Local reference to P2 World. */ this.world = world; offset = [ world.pxm(offset[0]), world.pxm(offset[1]) ]; var options = { localOffsetB: offset, localAngleB: angle, maxForce: maxForce }; p2.LockConstraint.call(this, bodyA, bodyB, options); }; Phaser.Physics.P2.LockConstraint.prototype = Object.create(p2.LockConstraint.prototype); Phaser.Physics.P2.LockConstraint.prototype.constructor = Phaser.Physics.P2.LockConstraint; /** * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ /** * Connects two bodies at given offset points, letting them rotate relative to each other around this point. * * @class Phaser.Physics.P2.PrismaticConstraint * @constructor * @param {Phaser.Physics.P2} world - A reference to the P2 World. * @param {p2.Body} bodyA - First connected body. * @param {p2.Body} bodyB - Second connected body. * @param {boolean} [lockRotation=true] - If set to false, bodyB will be free to rotate around its anchor point. * @param {Array} [anchorA] - Body A's anchor point, defined in its own local frame. The value is an array with 2 elements matching x and y, i.e: [32, 32]. * @param {Array} [anchorB] - Body A's anchor point, defined in its own local frame. The value is an array with 2 elements matching x and y, i.e: [32, 32]. * @param {Array} [axis] - An axis, defined in body A frame, that body B's anchor point may slide along. The value is an array with 2 elements matching x and y, i.e: [32, 32]. * @param {number} [maxForce] - The maximum force that should be applied to constrain the bodies. */ Phaser.Physics.P2.PrismaticConstraint = function (world, bodyA, bodyB, lockRotation, anchorA, anchorB, axis, maxForce) { if (typeof lockRotation === 'undefined') { lockRotation = true; } if (typeof anchorA === 'undefined') { anchorA = [0, 0]; } if (typeof anchorB === 'undefined') { anchorB = [0, 0]; } if (typeof axis === 'undefined') { axis = [0, 0]; } if (typeof maxForce === 'undefined') { maxForce = Number.MAX_VALUE; } /** * @property {Phaser.Game} game - Local reference to game. */ this.game = world.game; /** * @property {Phaser.Physics.P2} world - Local reference to P2 World. */ this.world = world; anchorA = [ world.pxmi(anchorA[0]), world.pxmi(anchorA[1]) ]; anchorB = [ world.pxmi(anchorB[0]), world.pxmi(anchorB[1]) ]; var options = { localAnchorA: anchorA, localAnchorB: anchorB, localAxisA: axis, maxForce: maxForce, disableRotationalLock: !lockRotation }; p2.PrismaticConstraint.call(this, bodyA, bodyB, options); }; Phaser.Physics.P2.PrismaticConstraint.prototype = Object.create(p2.PrismaticConstraint.prototype); Phaser.Physics.P2.PrismaticConstraint.prototype.constructor = Phaser.Physics.P2.PrismaticConstraint; /** * @author Richard Davey * @copyright 2014 Photon Storm Ltd. * @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License} */ /** * Connects two bodies at given offset points, letting them rotate relative to each other around this point. * The pivot points are given in world (pixel) coordinates. * * @class Phaser.Physics.P2.RevoluteConstraint * @constructor * @param {Phaser.Physics.P2} world - A reference to the P2 World. * @param {p2.Body} bodyA - First connected body. * @param {Float32Array} pivotA - The point relative to the center of mass of bodyA which bodyA is constrained to. The value is an array with 2 elements matching x and y, i.e: [32, 32]. * @param {p2.Body} bodyB - Second connected body. * @param {Float32Array} pivotB - The point relative to the center of mass of bodyB which bodyB is constrained to. The value is an array with 2 elements matching x and y, i.e: [32, 32]. * @param {number} [maxForce=0] - The maximum force that should be applied to constrain the bodies. * @param {Float32Array} [worldPivot=null] - A pivot point given in world coordinates. If specified, localPivotA and localPivotB are automatically computed from this value. */ Phaser.Physics.P2.RevoluteConstraint = function (world, bodyA, pivotA, bodyB, pivotB, maxForce, worldPivot) { if (typeof maxForce === 'undefined') { maxForce = Number.MAX_VALUE; } if (typeof worldPivot === 'undefined') { worldPivot = null; } /** * @property {Phaser.Game} game - Local reference to game. */ this.game = world.game; /** * @property {Phaser.Physics.P2} world - Local reference to P2 World. */ this.world = world; pivotA = [ world.pxmi(pivotA[0]), world.pxmi(pivotA[1]) ]; pivotB = [ world.pxmi(pivotB[0]), world.pxmi(pivotB[1]) ]; if (worldPivot) { worldPivot = [ world.pxmi(worldPivot[0]), world.pxmi(worldPivot[1]) ]; } var options = { worldPivot: worldPivot, localPivotA: pivotA, localPivotB: pivotB, maxForce: maxForce }; p2.RevoluteConstraint.call(this, bodyA, bodyB, options); }; Phaser.Physics.P2.RevoluteConstraint.prototype = Object.create(p2.RevoluteConstraint.prototype); Phaser.Physics.P2.RevoluteConstraint.prototype.constructor = Phaser.Physics.P2.RevoluteConstraint;