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<h1 class="page-title">Source: utils/Utils.js</h1>
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<section>
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<article>
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<pre class="sunlight-highlight-javascript linenums">/* jshint supernew: true */
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/**
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* @author Richard Davey <rich@photonstorm.com>
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* @copyright 2014 Photon Storm Ltd.
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* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
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*/
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/**
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* @class Phaser.Utils
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* @static
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*/
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Phaser.Utils = {
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/**
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* Transposes the elements of the given Array.
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*
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* @method transposeArray
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* @param {array} array - The array to transpose.
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* @return {array} The transposed array.
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*/
|
|
transposeArray: function (array) {
|
|
|
|
var result = new Array(array[0].length);
|
|
|
|
for (var i = 0; i < array[0].length; i++)
|
|
{
|
|
result[i] = new Array(array.length - 1);
|
|
|
|
for (var j = array.length - 1; j > -1; j--)
|
|
{
|
|
result[i][j] = array[j][i];
|
|
}
|
|
}
|
|
|
|
return result;
|
|
|
|
},
|
|
|
|
/**
|
|
* Rotates the given array.
|
|
* Based on the routine from http://jsfiddle.net/MrPolywhirl/NH42z/
|
|
*
|
|
* @method Phaser.Utils.rotateArray
|
|
* @param {array} matrix - The array to rotate.
|
|
* @param {number|string} direction - The amount to rotate. Either a number: 90, -90, 270, -270, 180 or a string: 'rotateLeft', 'rotateRight' or 'rotate180'
|
|
* @return {array} The rotated array
|
|
*/
|
|
rotateArray: function (matrix, direction) {
|
|
|
|
if (typeof direction !== 'string')
|
|
{
|
|
direction = ((direction % 360) + 360) % 360;
|
|
}
|
|
|
|
if (direction === 90 || direction === -270 || direction === 'rotateLeft')
|
|
{
|
|
matrix = Phaser.Utils.transposeArray(matrix);
|
|
matrix = matrix.reverse();
|
|
}
|
|
else if (direction === -90 || direction === 270 || direction === 'rotateRight')
|
|
{
|
|
matrix = matrix.reverse();
|
|
matrix = Phaser.Utils.transposeArray(matrix);
|
|
}
|
|
else if (Math.abs(direction) === 180 || direction === 'rotate180')
|
|
{
|
|
for (var i = 0; i < matrix.length; i++)
|
|
{
|
|
matrix[i].reverse();
|
|
}
|
|
|
|
matrix = matrix.reverse();
|
|
}
|
|
|
|
return matrix;
|
|
|
|
},
|
|
|
|
/**
|
|
* Get a unit dimension from a string.
|
|
*
|
|
* @method Phaser.Utils.parseDimension
|
|
* @param {string|number} size - The size to parse.
|
|
* @param {number} dimension - The window dimension to check.
|
|
* @return {number} The parsed dimension.
|
|
*/
|
|
parseDimension: function (size, dimension) {
|
|
|
|
var f = 0;
|
|
var px = 0;
|
|
|
|
if (typeof size === 'string')
|
|
{
|
|
// %?
|
|
if (size.substr(-1) === '%')
|
|
{
|
|
f = parseInt(size, 10) / 100;
|
|
|
|
if (dimension === 0)
|
|
{
|
|
px = window.innerWidth * f;
|
|
}
|
|
else
|
|
{
|
|
px = window.innerHeight * f;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
px = parseInt(size, 10);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
px = size;
|
|
}
|
|
|
|
return px;
|
|
|
|
},
|
|
|
|
/**
|
|
* A standard Fisher-Yates Array shuffle implementation.
|
|
* @method Phaser.Utils.shuffle
|
|
* @param {array} array - The array to shuffle.
|
|
* @return {array} The shuffled array.
|
|
*/
|
|
shuffle: function (array) {
|
|
|
|
for (var i = array.length - 1; i > 0; i--)
|
|
{
|
|
var j = Math.floor(Math.random() * (i + 1));
|
|
var temp = array[i];
|
|
array[i] = array[j];
|
|
array[j] = temp;
|
|
}
|
|
|
|
return array;
|
|
|
|
},
|
|
|
|
/**
|
|
* Javascript string pad http://www.webtoolkit.info/.
|
|
* pad = the string to pad it out with (defaults to a space)
|
|
* dir = 1 (left), 2 (right), 3 (both)
|
|
* @method Phaser.Utils.pad
|
|
* @param {string} str - The target string.
|
|
* @param {number} len - The number of characters to be added.
|
|
* @param {number} pad - The string to pad it out with (defaults to a space).
|
|
* @param {number} [dir=3] The direction dir = 1 (left), 2 (right), 3 (both).
|
|
* @return {string} The padded string
|
|
*/
|
|
pad: function (str, len, pad, dir) {
|
|
|
|
if (typeof(len) == "undefined") { var len = 0; }
|
|
if (typeof(pad) == "undefined") { var pad = ' '; }
|
|
if (typeof(dir) == "undefined") { var dir = 3; }
|
|
|
|
var padlen = 0;
|
|
|
|
if (len + 1 >= str.length)
|
|
{
|
|
switch (dir)
|
|
{
|
|
case 1:
|
|
str = new Array(len + 1 - str.length).join(pad) + str;
|
|
break;
|
|
|
|
case 3:
|
|
var right = Math.ceil((padlen = len - str.length) / 2);
|
|
var left = padlen - right;
|
|
str = new Array(left+1).join(pad) + str + new Array(right+1).join(pad);
|
|
break;
|
|
|
|
default:
|
|
str = str + new Array(len + 1 - str.length).join(pad);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return str;
|
|
|
|
},
|
|
|
|
/**
|
|
* This is a slightly modified version of jQuery.isPlainObject. A plain object is an object whose internal class property is [object Object].
|
|
* @method Phaser.Utils.isPlainObject
|
|
* @param {object} obj - The object to inspect.
|
|
* @return {boolean} - true if the object is plain, otherwise false.
|
|
*/
|
|
isPlainObject: function (obj) {
|
|
|
|
// Not plain objects:
|
|
// - Any object or value whose internal [[Class]] property is not "[object Object]"
|
|
// - DOM nodes
|
|
// - window
|
|
if (typeof(obj) !== "object" || obj.nodeType || obj === obj.window)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Support: Firefox <20
|
|
// The try/catch suppresses exceptions thrown when attempting to access
|
|
// the "constructor" property of certain host objects, ie. |window.location|
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=814622
|
|
try {
|
|
if (obj.constructor && !({}).hasOwnProperty.call(obj.constructor.prototype, "isPrototypeOf"))
|
|
{
|
|
return false;
|
|
}
|
|
} catch (e) {
|
|
return false;
|
|
}
|
|
|
|
// If the function hasn't returned already, we're confident that
|
|
// |obj| is a plain object, created by {} or constructed with new Object
|
|
return true;
|
|
},
|
|
|
|
/**
|
|
* This is a slightly modified version of http://api.jquery.com/jQuery.extend/
|
|
* @method Phaser.Utils.extend
|
|
* @param {boolean} deep - Perform a deep copy?
|
|
* @param {object} target - The target object to copy to.
|
|
* @return {object} The extended object.
|
|
*/
|
|
extend: function () {
|
|
|
|
var options, name, src, copy, copyIsArray, clone,
|
|
target = arguments[0] || {},
|
|
i = 1,
|
|
length = arguments.length,
|
|
deep = false;
|
|
|
|
// Handle a deep copy situation
|
|
if (typeof target === "boolean")
|
|
{
|
|
deep = target;
|
|
target = arguments[1] || {};
|
|
// skip the boolean and the target
|
|
i = 2;
|
|
}
|
|
|
|
// extend Phaser if only one argument is passed
|
|
if (length === i)
|
|
{
|
|
target = this;
|
|
--i;
|
|
}
|
|
|
|
for (; i < length; i++)
|
|
{
|
|
// Only deal with non-null/undefined values
|
|
if ((options = arguments[i]) != null)
|
|
{
|
|
// Extend the base object
|
|
for (name in options)
|
|
{
|
|
src = target[name];
|
|
copy = options[name];
|
|
|
|
// Prevent never-ending loop
|
|
if (target === copy)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
// Recurse if we're merging plain objects or arrays
|
|
if (deep && copy && (Phaser.Utils.isPlainObject(copy) || (copyIsArray = Array.isArray(copy))))
|
|
{
|
|
if (copyIsArray)
|
|
{
|
|
copyIsArray = false;
|
|
clone = src && Array.isArray(src) ? src : [];
|
|
}
|
|
else
|
|
{
|
|
clone = src && Phaser.Utils.isPlainObject(src) ? src : {};
|
|
}
|
|
|
|
// Never move original objects, clone them
|
|
target[name] = Phaser.Utils.extend(deep, clone, copy);
|
|
|
|
// Don't bring in undefined values
|
|
}
|
|
else if (copy !== undefined)
|
|
{
|
|
target[name] = copy;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Return the modified object
|
|
return target;
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* A polyfill for Function.prototype.bind
|
|
*/
|
|
if (typeof Function.prototype.bind != 'function') {
|
|
|
|
/* jshint freeze: false */
|
|
Function.prototype.bind = (function () {
|
|
|
|
var slice = Array.prototype.slice;
|
|
|
|
return function (thisArg) {
|
|
|
|
var target = this, boundArgs = slice.call(arguments, 1);
|
|
|
|
if (typeof target != 'function')
|
|
{
|
|
throw new TypeError();
|
|
}
|
|
|
|
function bound() {
|
|
var args = boundArgs.concat(slice.call(arguments));
|
|
target.apply(this instanceof bound ? this : thisArg, args);
|
|
}
|
|
|
|
bound.prototype = (function F(proto) {
|
|
if (proto)
|
|
{
|
|
F.prototype = proto;
|
|
}
|
|
|
|
if (!(this instanceof F))
|
|
{
|
|
return new F;
|
|
}
|
|
})(target.prototype);
|
|
|
|
return bound;
|
|
};
|
|
})();
|
|
}
|
|
|
|
/**
|
|
* A polyfill for Array.isArray
|
|
*/
|
|
if (!Array.isArray)
|
|
{
|
|
Array.isArray = function (arg)
|
|
{
|
|
return Object.prototype.toString.call(arg) == '[object Array]';
|
|
};
|
|
}
|
|
|
|
/**
|
|
* A polyfill for Array.forEach
|
|
* https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach
|
|
*/
|
|
if (!Array.prototype.forEach)
|
|
{
|
|
Array.prototype.forEach = function(fun /*, thisArg */)
|
|
{
|
|
"use strict";
|
|
|
|
if (this === void 0 || this === null)
|
|
{
|
|
throw new TypeError();
|
|
}
|
|
|
|
var t = Object(this);
|
|
var len = t.length >>> 0;
|
|
|
|
if (typeof fun !== "function")
|
|
{
|
|
throw new TypeError();
|
|
}
|
|
|
|
var thisArg = arguments.length >= 2 ? arguments[1] : void 0;
|
|
|
|
for (var i = 0; i < len; i++)
|
|
{
|
|
if (i in t)
|
|
{
|
|
fun.call(thisArg, t[i], i, t);
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Low-budget Float32Array knock-off, suitable for use with P2.js in IE9
|
|
* Source: http://www.html5gamedevs.com/topic/5988-phaser-12-ie9/
|
|
* Cameron Foale (http://www.kibibu.com)
|
|
*/
|
|
if (typeof window.Uint32Array !== "function")
|
|
{
|
|
var CheapArray = function(type)
|
|
{
|
|
var proto = new Array(); // jshint ignore:line
|
|
|
|
window[type] = function(arg) {
|
|
|
|
if (typeof(arg) === "number")
|
|
{
|
|
Array.call(this, arg);
|
|
this.length = arg;
|
|
|
|
for (var i = 0; i < this.length; i++)
|
|
{
|
|
this[i] = 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Array.call(this, arg.length);
|
|
|
|
this.length = arg.length;
|
|
|
|
for (var i = 0; i < this.length; i++)
|
|
{
|
|
this[i] = arg[i];
|
|
}
|
|
}
|
|
};
|
|
|
|
window[type].prototype = proto;
|
|
window[type].constructor = window[type];
|
|
};
|
|
|
|
CheapArray('Uint32Array'); // jshint ignore:line
|
|
CheapArray('Int16Array'); // jshint ignore:line
|
|
}
|
|
|
|
/**
|
|
* Also fix for the absent console in IE9
|
|
*/
|
|
if (!window.console)
|
|
{
|
|
window.console = {};
|
|
window.console.log = window.console.assert = function(){};
|
|
window.console.warn = window.console.assert = function(){};
|
|
}
|
|
</pre>
|
|
</article>
|
|
</section>
|
|
|
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
<div class="clearfix"></div>
|
|
<footer>
|
|
|
|
|
|
<span class="copyright">
|
|
Phaser Copyright © 2012-2014 Photon Storm Ltd.
|
|
</span>
|
|
<br />
|
|
|
|
<span class="jsdoc-message">
|
|
Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.3.0-dev</a>
|
|
on Tue May 20 2014 10:05:49 GMT+0100 (BST) using the <a href="https://github.com/terryweiss/docstrap">DocStrap template</a>.
|
|
</span>
|
|
</footer>
|
|
</div>
|
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|
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<br clear="both">
|
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</div>
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<script src="scripts/sunlight.js"></script>
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<script src="scripts/sunlight.javascript.js"></script>
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<script src="scripts/sunlight-plugin.linenumbers.js"></script>
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<script src="scripts/sunlight-plugin.menu.js"></script>
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<script src="scripts/jquery.min.js"></script>
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<script src="scripts/jquery.scrollTo.js"></script>
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<script src="scripts/jquery.localScroll.js"></script>
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<script src="scripts/bootstrap-dropdown.js"></script>
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<script src="scripts/toc.js"></script>
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<script> Sunlight.highlightAll({lineNumbers:true, showMenu: true, enableDoclinks :true}); </script>
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<script>
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$( function () {
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$( "#toc" ).toc( {
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|
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$( "#toc>ul" ).addClass( "nav nav-pills nav-stacked" );
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$( "#main span[id^='toc']" ).addClass( "toc-shim" );
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