mirror of
https://github.com/photonstorm/phaser
synced 2024-11-26 22:52:14 +00:00
1413 lines
59 KiB
JavaScript
1413 lines
59 KiB
JavaScript
/// <reference path="../../Phaser/Game.ts" />
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var NPhysics = (function () {
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function NPhysics() {
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this.grav = 0.2;
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this.drag = 1;
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this.bounce = 0.3;
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this.friction = 0.05;
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this.min_f = 0;
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this.max_f = 1;
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this.min_b = 0;
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this.max_b = 1;
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this.min_g = 0;
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this.max_g = 1;
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this.xmin = 0;
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this.xmax = 800;
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this.ymin = 0;
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this.ymax = 600;
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this.objrad = 24;
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this.tilerad = 24 * 2;
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this.objspeed = 0.2;
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this.maxspeed = 20;
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}
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NPhysics.prototype.update = function () {
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// demoObj.Verlet();
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// demoObj.CollideVsWorldBounds();
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};
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return NPhysics;
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})();
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var AABB = (function () {
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function AABB(x, y, xw, yw) {
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this.type = 0;
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this.pos = new Phaser.Vector2(x, y);
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this.oldpos = this.pos.clone();
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this.xw = Math.abs(xw);
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this.yw = Math.abs(yw);
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this.aabbTileProjections = {
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}//hash object to hold tile-specific collision functions
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;
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this.aabbTileProjections[TileMapCell.CTYPE_FULL] = this.ProjAABB_Full;
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}
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AABB.COL_NONE = 0;
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AABB.COL_AXIS = 1;
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AABB.COL_OTHER = 2;
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AABB.prototype.IntegrateVerlet = function () {
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//var d = DRAG;
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//var g = GRAV;
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var d = 1;
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var g = 0.2;
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var p = this.pos;
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var o = this.oldpos;
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var px, py;
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var ox = o.x;//we can't swap buffers since mcs/sticks point directly to vector2s..
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var oy = o.y;
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o.x = px = p.x//get vector values
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;
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o.y = py = p.y//p = position
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;
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//o = oldposition
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//integrate
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p.x += (d * px) - (d * ox);
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p.y += (d * py) - (d * oy) + g;
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};
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AABB.prototype.ReportCollisionVsWorld = function (px, py, dx, dy, obj) {
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var p = this.pos;
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var o = this.oldpos;
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//calc velocity
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var vx = p.x - o.x;
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var vy = p.y - o.y;
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//find component of velocity parallel to collision normal
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var dp = (vx * dx + vy * dy);
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var nx = dp * dx;//project velocity onto collision normal
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var ny = dp * dy;//nx,ny is normal velocity
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var tx = vx - nx;//px,py is tangent velocity
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var ty = vy - ny;
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//we only want to apply collision response forces if the object is travelling into, and not out of, the collision
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var b, bx, by, f, fx, fy;
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if(dp < 0) {
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//f = FRICTION;
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f = 0.05;
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fx = tx * f;
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fy = ty * f;
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//b = 1 + BOUNCE;//this bounce constant should be elsewhere, i.e inside the object/tile/etc..
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b = 1 + 0.3//this bounce constant should be elsewhere, i.e inside the object/tile/etc..
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;
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bx = (nx * b);
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by = (ny * b);
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} else {
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//moving out of collision, do not apply forces
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bx = by = fx = fy = 0;
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}
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p.x += px//project object out of collision
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;
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p.y += py;
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o.x += px + bx + fx//apply bounce+friction impulses which alter velocity
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;
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o.y += py + by + fy;
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};
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AABB.prototype.CollideAABBVsWorldBounds = function () {
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var p = this.pos;
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var xw = this.xw;
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var yw = this.yw;
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var XMIN = 0;
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var XMAX = 800;
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var YMIN = 0;
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var YMAX = 600;
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//collide vs. x-bounds
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//test XMIN
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var dx = XMIN - (p.x - xw);
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if(0 < dx) {
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//object is colliding with XMIN
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this.ReportCollisionVsWorld(dx, 0, 1, 0, null);
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} else {
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//test XMAX
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dx = (p.x + xw) - XMAX;
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if(0 < dx) {
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//object is colliding with XMAX
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this.ReportCollisionVsWorld(-dx, 0, -1, 0, null);
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}
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}
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//collide vs. y-bounds
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//test YMIN
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var dy = YMIN - (p.y - yw);
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if(0 < dy) {
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//object is colliding with YMIN
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this.ReportCollisionVsWorld(0, dy, 0, 1, null);
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} else {
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//test YMAX
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dy = (p.y + yw) - YMAX;
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if(0 < dy) {
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//object is colliding with YMAX
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this.ReportCollisionVsWorld(0, -dy, 0, -1, null);
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}
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}
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};
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AABB.prototype.render = function (context) {
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context.beginPath();
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context.strokeStyle = 'rgb(0,255,0)';
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context.strokeRect(this.pos.x - this.xw, this.pos.y - this.yw, this.xw * 2, this.yw * 2);
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context.stroke();
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context.closePath();
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context.fillStyle = 'rgb(0,255,0)';
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context.fillRect(this.pos.x, this.pos.y, 2, 2);
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/*
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if (this.oH == 1)
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{
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context.beginPath();
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context.strokeStyle = 'rgb(255,0,0)';
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context.moveTo(this.pos.x - this.radius, this.pos.y - this.radius);
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context.lineTo(this.pos.x - this.radius, this.pos.y + this.radius);
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context.stroke();
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context.closePath();
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}
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else if (this.oH == -1)
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{
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context.beginPath();
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context.strokeStyle = 'rgb(255,0,0)';
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context.moveTo(this.pos.x + this.radius, this.pos.y - this.radius);
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context.lineTo(this.pos.x + this.radius, this.pos.y + this.radius);
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context.stroke();
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context.closePath();
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}
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if (this.oV == 1)
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{
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context.beginPath();
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context.strokeStyle = 'rgb(255,0,0)';
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context.moveTo(this.pos.x - this.radius, this.pos.y - this.radius);
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context.lineTo(this.pos.x + this.radius, this.pos.y - this.radius);
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context.stroke();
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context.closePath();
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}
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else if (this.oV == -1)
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{
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context.beginPath();
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context.strokeStyle = 'rgb(255,0,0)';
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context.moveTo(this.pos.x - this.radius, this.pos.y + this.radius);
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context.lineTo(this.pos.x + this.radius, this.pos.y + this.radius);
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context.stroke();
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context.closePath();
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}
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*/
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};
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AABB.prototype.ResolveBoxTile = function (x, y, box, t) {
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if(0 < t.ID) {
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return this.aabbTileProjections[t.CTYPE](x, y, box, t);
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} else {
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//trace("ResolveBoxTile() was called with an empty (or unknown) tile!: ID=" + t.ID + " ("+ t.i + "," + t.j + ")");
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return false;
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}
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};
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AABB.prototype.ProjAABB_Full = function (x, y, obj, t) {
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var l = Math.sqrt(x * x + y * y);
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obj.ReportCollisionVsWorld(x, y, x / l, y / l, t);
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return AABB.COL_AXIS;
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};
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return AABB;
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})();
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var TileMapCell = (function () {
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function TileMapCell(x, y, xw, yw) {
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this.ID = TileMapCell.TID_EMPTY//all tiles start empty
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;
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this.CTYPE = TileMapCell.CTYPE_EMPTY;
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this.pos = new Phaser.Vector2(x, y)//setup collision properties
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;
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this.xw = xw;
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this.yw = yw;
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this.minx = this.pos.x - this.xw;
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this.maxx = this.pos.x + this.xw;
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this.miny = this.pos.y - this.yw;
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this.maxy = this.pos.y + this.yw;
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//this stores tile-specific collision information
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this.signx = 0;
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this.signy = 0;
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this.sx = 0;
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this.sy = 0;
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}
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TileMapCell.TID_EMPTY = 0;
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TileMapCell.TID_FULL = 1;
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TileMapCell.TID_45DEGpn = 2;
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TileMapCell.TID_45DEGnn = 3;
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TileMapCell.TID_45DEGnp = 4;
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TileMapCell.TID_45DEGpp = 5;
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TileMapCell.TID_CONCAVEpn = 6;
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TileMapCell.TID_CONCAVEnn = 7;
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TileMapCell.TID_CONCAVEnp = 8;
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TileMapCell.TID_CONCAVEpp = 9;
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TileMapCell.TID_CONVEXpn = 10;
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TileMapCell.TID_CONVEXnn = 11;
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TileMapCell.TID_CONVEXnp = 12;
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TileMapCell.TID_CONVEXpp = 13;
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TileMapCell.TID_22DEGpnS = 14;
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TileMapCell.TID_22DEGnnS = 15;
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TileMapCell.TID_22DEGnpS = 16;
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TileMapCell.TID_22DEGppS = 17;
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TileMapCell.TID_22DEGpnB = 18;
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TileMapCell.TID_22DEGnnB = 19;
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TileMapCell.TID_22DEGnpB = 20;
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TileMapCell.TID_22DEGppB = 21;
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TileMapCell.TID_67DEGpnS = 22;
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TileMapCell.TID_67DEGnnS = 23;
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TileMapCell.TID_67DEGnpS = 24;
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TileMapCell.TID_67DEGppS = 25;
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TileMapCell.TID_67DEGpnB = 26;
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TileMapCell.TID_67DEGnnB = 27;
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TileMapCell.TID_67DEGnpB = 28;
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TileMapCell.TID_67DEGppB = 29;
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TileMapCell.TID_HALFd = 30;
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TileMapCell.TID_HALFr = 31;
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TileMapCell.TID_HALFu = 32;
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TileMapCell.TID_HALFl = 33;
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TileMapCell.CTYPE_EMPTY = 0;
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TileMapCell.CTYPE_FULL = 1;
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TileMapCell.CTYPE_45DEG = 2;
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TileMapCell.CTYPE_CONCAVE = 6;
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TileMapCell.CTYPE_CONVEX = 10;
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TileMapCell.CTYPE_22DEGs = 14;
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TileMapCell.CTYPE_22DEGb = 18;
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TileMapCell.CTYPE_67DEGs = 22;
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TileMapCell.CTYPE_67DEGb = 26;
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TileMapCell.CTYPE_HALF = 30;
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TileMapCell.prototype.SetState = //these functions are used to update the cell
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//note: ID is assumed to NOT be "empty" state..
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//if it IS the empty state, the tile clears itself
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function (ID) {
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if(ID == TileMapCell.TID_EMPTY) {
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this.Clear();
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} else {
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//set tile state to a non-emtpy value, and update it's edges and those of the neighbors
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this.ID = ID;
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this.UpdateType();
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//this.Draw();
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}
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return this;
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};
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TileMapCell.prototype.Clear = function () {
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//tile was on, turn it off
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this.ID = TileMapCell.TID_EMPTY;
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this.UpdateType();
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//this.Draw();
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};
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TileMapCell.prototype.render = function (context) {
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context.beginPath();
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context.strokeStyle = 'rgb(255,255,0)';
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context.strokeRect(this.minx, this.miny, this.xw * 2, this.yw * 2);
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context.strokeRect(this.pos.x, this.pos.y, 2, 2);
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context.closePath();
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};
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TileMapCell.prototype.UpdateType = //this converts a tile from implicitly-defined (via ID), to explicit (via properties)
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function () {
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if(0 < this.ID) {
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//tile is non-empty; collide
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if(this.ID < TileMapCell.CTYPE_45DEG) {
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//TID_FULL
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this.CTYPE = TileMapCell.CTYPE_FULL;
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this.signx = 0;
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this.signy = 0;
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this.sx = 0;
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this.sy = 0;
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} else if(this.ID < TileMapCell.CTYPE_CONCAVE) {
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//45deg
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this.CTYPE = TileMapCell.CTYPE_45DEG;
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if(this.ID == TileMapCell.TID_45DEGpn) {
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console.log('set tile as 45deg pn');
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this.signx = 1;
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this.signy = -1;
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this.sx = this.signx / Math.SQRT2//get slope _unit_ normal
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;
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this.sy = this.signy / Math.SQRT2//since normal is (1,-1), length is sqrt(1*1 + -1*-1) = sqrt(2)
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;
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} else if(this.ID == TileMapCell.TID_45DEGnn) {
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this.signx = -1;
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this.signy = -1;
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this.sx = this.signx / Math.SQRT2//get slope _unit_ normal
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;
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this.sy = this.signy / Math.SQRT2//since normal is (1,-1), length is sqrt(1*1 + -1*-1) = sqrt(2)
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;
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} else if(this.ID == TileMapCell.TID_45DEGnp) {
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this.signx = -1;
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this.signy = 1;
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this.sx = this.signx / Math.SQRT2//get slope _unit_ normal
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;
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this.sy = this.signy / Math.SQRT2//since normal is (1,-1), length is sqrt(1*1 + -1*-1) = sqrt(2)
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;
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} else if(this.ID == TileMapCell.TID_45DEGpp) {
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this.signx = 1;
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this.signy = 1;
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this.sx = this.signx / Math.SQRT2//get slope _unit_ normal
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;
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this.sy = this.signy / Math.SQRT2//since normal is (1,-1), length is sqrt(1*1 + -1*-1) = sqrt(2)
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;
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} else {
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//trace("BAAAD TILE!!!!!: ID=" + this.ID + " ("+ t.i + "," + t.j + ")");
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return false;
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}
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} else if(this.ID < TileMapCell.CTYPE_CONVEX) {
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//concave
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this.CTYPE = TileMapCell.CTYPE_CONCAVE;
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if(this.ID == TileMapCell.TID_CONCAVEpn) {
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this.signx = 1;
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this.signy = -1;
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this.sx = 0;
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this.sy = 0;
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} else if(this.ID == TileMapCell.TID_CONCAVEnn) {
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this.signx = -1;
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this.signy = -1;
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this.sx = 0;
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this.sy = 0;
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} else if(this.ID == TileMapCell.TID_CONCAVEnp) {
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this.signx = -1;
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this.signy = 1;
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this.sx = 0;
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this.sy = 0;
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} else if(this.ID == TileMapCell.TID_CONCAVEpp) {
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this.signx = 1;
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this.signy = 1;
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this.sx = 0;
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this.sy = 0;
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} else {
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//trace("BAAAD TILE!!!!!: ID=" + this.ID + " ("+ t.i + "," + t.j + ")");
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return false;
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}
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} else if(this.ID < TileMapCell.CTYPE_22DEGs) {
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//convex
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this.CTYPE = TileMapCell.CTYPE_CONVEX;
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if(this.ID == TileMapCell.TID_CONVEXpn) {
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this.signx = 1;
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this.signy = -1;
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this.sx = 0;
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this.sy = 0;
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} else if(this.ID == TileMapCell.TID_CONVEXnn) {
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this.signx = -1;
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this.signy = -1;
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this.sx = 0;
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this.sy = 0;
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} else if(this.ID == TileMapCell.TID_CONVEXnp) {
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this.signx = -1;
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this.signy = 1;
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this.sx = 0;
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this.sy = 0;
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} else if(this.ID == TileMapCell.TID_CONVEXpp) {
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this.signx = 1;
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this.signy = 1;
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this.sx = 0;
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this.sy = 0;
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} else {
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//trace("BAAAD TILE!!!!!: ID=" + this.ID + " ("+ t.i + "," + t.j + ")");
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return false;
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}
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} else if(this.ID < TileMapCell.CTYPE_22DEGb) {
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//22deg small
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this.CTYPE = TileMapCell.CTYPE_22DEGs;
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if(this.ID == TileMapCell.TID_22DEGpnS) {
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this.signx = 1;
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this.signy = -1;
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var slen = Math.sqrt(2 * 2 + 1 * 1);
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this.sx = (this.signx * 1) / slen;
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this.sy = (this.signy * 2) / slen;
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} else if(this.ID == TileMapCell.TID_22DEGnnS) {
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this.signx = -1;
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this.signy = -1;
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var slen = Math.sqrt(2 * 2 + 1 * 1);
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this.sx = (this.signx * 1) / slen;
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this.sy = (this.signy * 2) / slen;
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} else if(this.ID == TileMapCell.TID_22DEGnpS) {
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this.signx = -1;
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this.signy = 1;
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var slen = Math.sqrt(2 * 2 + 1 * 1);
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this.sx = (this.signx * 1) / slen;
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this.sy = (this.signy * 2) / slen;
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} else if(this.ID == TileMapCell.TID_22DEGppS) {
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this.signx = 1;
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this.signy = 1;
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var slen = Math.sqrt(2 * 2 + 1 * 1);
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this.sx = (this.signx * 1) / slen;
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this.sy = (this.signy * 2) / slen;
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} else {
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//trace("BAAAD TILE!!!!!: ID=" + this.ID + " ("+ t.i + "," + t.j + ")");
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return false;
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}
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} else if(this.ID < TileMapCell.CTYPE_67DEGs) {
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//22deg big
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this.CTYPE = TileMapCell.CTYPE_22DEGb;
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if(this.ID == TileMapCell.TID_22DEGpnB) {
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this.signx = 1;
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this.signy = -1;
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var slen = Math.sqrt(2 * 2 + 1 * 1);
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this.sx = (this.signx * 1) / slen;
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this.sy = (this.signy * 2) / slen;
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} else if(this.ID == TileMapCell.TID_22DEGnnB) {
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this.signx = -1;
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this.signy = -1;
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var slen = Math.sqrt(2 * 2 + 1 * 1);
|
|
this.sx = (this.signx * 1) / slen;
|
|
this.sy = (this.signy * 2) / slen;
|
|
} else if(this.ID == TileMapCell.TID_22DEGnpB) {
|
|
this.signx = -1;
|
|
this.signy = 1;
|
|
var slen = Math.sqrt(2 * 2 + 1 * 1);
|
|
this.sx = (this.signx * 1) / slen;
|
|
this.sy = (this.signy * 2) / slen;
|
|
} else if(this.ID == TileMapCell.TID_22DEGppB) {
|
|
this.signx = 1;
|
|
this.signy = 1;
|
|
var slen = Math.sqrt(2 * 2 + 1 * 1);
|
|
this.sx = (this.signx * 1) / slen;
|
|
this.sy = (this.signy * 2) / slen;
|
|
} else {
|
|
//trace("BAAAD TILE!!!!!: ID=" + this.ID + " ("+ t.i + "," + t.j + ")");
|
|
return false;
|
|
}
|
|
} else if(this.ID < TileMapCell.CTYPE_67DEGb) {
|
|
//67deg small
|
|
this.CTYPE = TileMapCell.CTYPE_67DEGs;
|
|
if(this.ID == TileMapCell.TID_67DEGpnS) {
|
|
this.signx = 1;
|
|
this.signy = -1;
|
|
var slen = Math.sqrt(2 * 2 + 1 * 1);
|
|
this.sx = (this.signx * 2) / slen;
|
|
this.sy = (this.signy * 1) / slen;
|
|
} else if(this.ID == TileMapCell.TID_67DEGnnS) {
|
|
this.signx = -1;
|
|
this.signy = -1;
|
|
var slen = Math.sqrt(2 * 2 + 1 * 1);
|
|
this.sx = (this.signx * 2) / slen;
|
|
this.sy = (this.signy * 1) / slen;
|
|
} else if(this.ID == TileMapCell.TID_67DEGnpS) {
|
|
this.signx = -1;
|
|
this.signy = 1;
|
|
var slen = Math.sqrt(2 * 2 + 1 * 1);
|
|
this.sx = (this.signx * 2) / slen;
|
|
this.sy = (this.signy * 1) / slen;
|
|
} else if(this.ID == TileMapCell.TID_67DEGppS) {
|
|
this.signx = 1;
|
|
this.signy = 1;
|
|
var slen = Math.sqrt(2 * 2 + 1 * 1);
|
|
this.sx = (this.signx * 2) / slen;
|
|
this.sy = (this.signy * 1) / slen;
|
|
} else {
|
|
//trace("BAAAD TILE!!!!!: ID=" + this.ID + " ("+ t.i + "," + t.j + ")");
|
|
return false;
|
|
}
|
|
} else if(this.ID < TileMapCell.CTYPE_HALF) {
|
|
//67deg big
|
|
this.CTYPE = TileMapCell.CTYPE_67DEGb;
|
|
if(this.ID == TileMapCell.TID_67DEGpnB) {
|
|
this.signx = 1;
|
|
this.signy = -1;
|
|
var slen = Math.sqrt(2 * 2 + 1 * 1);
|
|
this.sx = (this.signx * 2) / slen;
|
|
this.sy = (this.signy * 1) / slen;
|
|
} else if(this.ID == TileMapCell.TID_67DEGnnB) {
|
|
this.signx = -1;
|
|
this.signy = -1;
|
|
var slen = Math.sqrt(2 * 2 + 1 * 1);
|
|
this.sx = (this.signx * 2) / slen;
|
|
this.sy = (this.signy * 1) / slen;
|
|
} else if(this.ID == TileMapCell.TID_67DEGnpB) {
|
|
this.signx = -1;
|
|
this.signy = 1;
|
|
var slen = Math.sqrt(2 * 2 + 1 * 1);
|
|
this.sx = (this.signx * 2) / slen;
|
|
this.sy = (this.signy * 1) / slen;
|
|
} else if(this.ID == TileMapCell.TID_67DEGppB) {
|
|
this.signx = 1;
|
|
this.signy = 1;
|
|
var slen = Math.sqrt(2 * 2 + 1 * 1);
|
|
this.sx = (this.signx * 2) / slen;
|
|
this.sy = (this.signy * 1) / slen;
|
|
} else {
|
|
//trace("BAAAD TILE!!!!!: ID=" + this.ID + " ("+ t.i + "," + t.j + ")");
|
|
return false;
|
|
}
|
|
} else {
|
|
//half-full tile
|
|
this.CTYPE = TileMapCell.CTYPE_HALF;
|
|
if(this.ID == TileMapCell.TID_HALFd) {
|
|
this.signx = 0;
|
|
this.signy = -1;
|
|
this.sx = this.signx;
|
|
this.sy = this.signy;
|
|
} else if(this.ID == TileMapCell.TID_HALFu) {
|
|
this.signx = 0;
|
|
this.signy = 1;
|
|
this.sx = this.signx;
|
|
this.sy = this.signy;
|
|
} else if(this.ID == TileMapCell.TID_HALFl) {
|
|
this.signx = 1;
|
|
this.signy = 0;
|
|
this.sx = this.signx;
|
|
this.sy = this.signy;
|
|
} else if(this.ID == TileMapCell.TID_HALFr) {
|
|
this.signx = -1;
|
|
this.signy = 0;
|
|
this.sx = this.signx;
|
|
this.sy = this.signy;
|
|
} else {
|
|
//trace("BAAD TILE!!!: ID=" + this.ID + " ("+ t.i + "," + t.j + ")");
|
|
return false;
|
|
}
|
|
}
|
|
} else {
|
|
//TID_EMPTY
|
|
this.CTYPE = TileMapCell.CTYPE_EMPTY;
|
|
this.signx = 0;
|
|
this.signy = 0;
|
|
this.sx = 0;
|
|
this.sy = 0;
|
|
}
|
|
};
|
|
return TileMapCell;
|
|
})();
|
|
var Circle = (function () {
|
|
function Circle(x, y, radius) {
|
|
this.type = 1;
|
|
this.pos = new Phaser.Vector2(x, y);
|
|
this.oldpos = this.pos.clone();
|
|
this.radius = radius;
|
|
this.circleTileProjections = {
|
|
}//hash object to hold tile-specific collision functions
|
|
;
|
|
this.circleTileProjections[TileMapCell.CTYPE_FULL] = this.ProjCircle_Full;
|
|
this.circleTileProjections[TileMapCell.CTYPE_45DEG] = this.ProjCircle_45Deg;
|
|
this.circleTileProjections[TileMapCell.CTYPE_CONCAVE] = this.ProjCircle_Concave;
|
|
this.circleTileProjections[TileMapCell.CTYPE_CONVEX] = this.ProjCircle_Convex;
|
|
//Proj_CircleTile[CTYPE_22DEGs] = ProjCircle_22DegS;
|
|
//Proj_CircleTile[CTYPE_22DEGb] = ProjCircle_22DegB;
|
|
//Proj_CircleTile[CTYPE_67DEGs] = ProjCircle_67DegS;
|
|
//Proj_CircleTile[CTYPE_67DEGb] = ProjCircle_67DegB;
|
|
//Proj_CircleTile[CTYPE_HALF] = ProjCircle_Half;
|
|
}
|
|
Circle.COL_NONE = 0;
|
|
Circle.COL_AXIS = 1;
|
|
Circle.COL_OTHER = 2;
|
|
Circle.prototype.IntegrateVerlet = function () {
|
|
//var d = DRAG;
|
|
//var g = GRAV;
|
|
var d = 1;
|
|
var g = 0.2;
|
|
var p = this.pos;
|
|
var o = this.oldpos;
|
|
var px, py;
|
|
var ox = o.x;//we can't swap buffers since mcs/sticks point directly to vector2s..
|
|
|
|
var oy = o.y;
|
|
o.x = px = p.x//get vector values
|
|
;
|
|
o.y = py = p.y//p = position
|
|
;
|
|
//o = oldposition
|
|
//integrate
|
|
p.x += (d * px) - (d * ox);
|
|
p.y += (d * py) - (d * oy) + g;
|
|
};
|
|
Circle.prototype.ReportCollisionVsWorld = function (px, py, dx, dy, obj) {
|
|
var p = this.pos;
|
|
var o = this.oldpos;
|
|
//calc velocity
|
|
var vx = p.x - o.x;
|
|
var vy = p.y - o.y;
|
|
//find component of velocity parallel to collision normal
|
|
var dp = (vx * dx + vy * dy);
|
|
var nx = dp * dx;//project velocity onto collision normal
|
|
|
|
var ny = dp * dy;//nx,ny is normal velocity
|
|
|
|
var tx = vx - nx;//px,py is tangent velocity
|
|
|
|
var ty = vy - ny;
|
|
//we only want to apply collision response forces if the object is travelling into, and not out of, the collision
|
|
var b, bx, by, f, fx, fy;
|
|
if(dp < 0) {
|
|
//f = FRICTION;
|
|
f = 0.05;
|
|
fx = tx * f;
|
|
fy = ty * f;
|
|
//b = 1 + BOUNCE;//this bounce constant should be elsewhere, i.e inside the object/tile/etc..
|
|
b = 1 + 0.3//this bounce constant should be elsewhere, i.e inside the object/tile/etc..
|
|
;
|
|
bx = (nx * b);
|
|
by = (ny * b);
|
|
} else {
|
|
//moving out of collision, do not apply forces
|
|
bx = by = fx = fy = 0;
|
|
}
|
|
p.x += px//project object out of collision
|
|
;
|
|
p.y += py;
|
|
o.x += px + bx + fx//apply bounce+friction impulses which alter velocity
|
|
;
|
|
o.y += py + by + fy;
|
|
};
|
|
Circle.prototype.CollideCircleVsWorldBounds = function () {
|
|
var p = this.pos;
|
|
var r = this.radius;
|
|
var XMIN = 0;
|
|
var XMAX = 800;
|
|
var YMIN = 0;
|
|
var YMAX = 600;
|
|
//collide vs. x-bounds
|
|
//test XMIN
|
|
var dx = XMIN - (p.x - r);
|
|
if(0 < dx) {
|
|
//object is colliding with XMIN
|
|
this.ReportCollisionVsWorld(dx, 0, 1, 0, null);
|
|
} else {
|
|
//test XMAX
|
|
dx = (p.x + r) - XMAX;
|
|
if(0 < dx) {
|
|
//object is colliding with XMAX
|
|
this.ReportCollisionVsWorld(-dx, 0, -1, 0, null);
|
|
}
|
|
}
|
|
//collide vs. y-bounds
|
|
//test YMIN
|
|
var dy = YMIN - (p.y - r);
|
|
if(0 < dy) {
|
|
//object is colliding with YMIN
|
|
this.ReportCollisionVsWorld(0, dy, 0, 1, null);
|
|
} else {
|
|
//test YMAX
|
|
dy = (p.y + r) - YMAX;
|
|
if(0 < dy) {
|
|
//object is colliding with YMAX
|
|
this.ReportCollisionVsWorld(0, -dy, 0, -1, null);
|
|
}
|
|
}
|
|
};
|
|
Circle.prototype.render = function (context) {
|
|
context.beginPath();
|
|
context.strokeStyle = 'rgb(0,255,0)';
|
|
context.arc(this.pos.x, this.pos.y, this.radius, 0, Math.PI * 2);
|
|
context.stroke();
|
|
context.closePath();
|
|
if(this.oH == 1) {
|
|
context.beginPath();
|
|
context.strokeStyle = 'rgb(255,0,0)';
|
|
context.moveTo(this.pos.x - this.radius, this.pos.y - this.radius);
|
|
context.lineTo(this.pos.x - this.radius, this.pos.y + this.radius);
|
|
context.stroke();
|
|
context.closePath();
|
|
} else if(this.oH == -1) {
|
|
context.beginPath();
|
|
context.strokeStyle = 'rgb(255,0,0)';
|
|
context.moveTo(this.pos.x + this.radius, this.pos.y - this.radius);
|
|
context.lineTo(this.pos.x + this.radius, this.pos.y + this.radius);
|
|
context.stroke();
|
|
context.closePath();
|
|
}
|
|
if(this.oV == 1) {
|
|
context.beginPath();
|
|
context.strokeStyle = 'rgb(255,0,0)';
|
|
context.moveTo(this.pos.x - this.radius, this.pos.y - this.radius);
|
|
context.lineTo(this.pos.x + this.radius, this.pos.y - this.radius);
|
|
context.stroke();
|
|
context.closePath();
|
|
} else if(this.oV == -1) {
|
|
context.beginPath();
|
|
context.strokeStyle = 'rgb(255,0,0)';
|
|
context.moveTo(this.pos.x - this.radius, this.pos.y + this.radius);
|
|
context.lineTo(this.pos.x + this.radius, this.pos.y + this.radius);
|
|
context.stroke();
|
|
context.closePath();
|
|
}
|
|
};
|
|
Circle.prototype.CollideCircleVsTile = function (tile) {
|
|
var pos = this.pos;
|
|
var r = this.radius;
|
|
var c = tile;
|
|
var tx = c.pos.x;
|
|
var ty = c.pos.y;
|
|
var txw = c.xw;
|
|
var tyw = c.yw;
|
|
var dx = pos.x - tx;//tile->obj delta
|
|
|
|
var px = (txw + r) - Math.abs(dx);//penetration depth in x
|
|
|
|
if(0 < px) {
|
|
var dy = pos.y - ty;//tile->obj delta
|
|
|
|
var py = (tyw + r) - Math.abs(dy);//pen depth in y
|
|
|
|
if(0 < py) {
|
|
//object may be colliding with tile
|
|
//determine grid/voronoi region of circle center
|
|
this.oH = 0;
|
|
this.oV = 0;
|
|
if(dx < -txw) {
|
|
//circle is on left side of tile
|
|
this.oH = -1;
|
|
} else if(txw < dx) {
|
|
//circle is on right side of tile
|
|
this.oH = 1;
|
|
}
|
|
if(dy < -tyw) {
|
|
//circle is on top side of tile
|
|
this.oV = -1;
|
|
} else if(tyw < dy) {
|
|
//circle is on bottom side of tile
|
|
this.oV = 1;
|
|
}
|
|
this.ResolveCircleTile(px, py, this.oH, this.oV, this, c);
|
|
}
|
|
}
|
|
};
|
|
Circle.prototype.ResolveCircleTile = function (x, y, oH, oV, obj, t) {
|
|
if(0 < t.ID) {
|
|
return this.circleTileProjections[t.CTYPE](x, y, oH, oV, obj, t);
|
|
} else {
|
|
console.log("ResolveCircleTile() was called with an empty (or unknown) tile!: ID=" + t.ID + " (" + t.i + "," + t.j + ")");
|
|
return false;
|
|
}
|
|
};
|
|
Circle.prototype.ProjCircle_Full = function (x, y, oH, oV, obj, t) {
|
|
//if we're colliding vs. the current cell, we need to project along the
|
|
//smallest penetration vector.
|
|
//if we're colliding vs. horiz. or vert. neighb, we simply project horiz/vert
|
|
//if we're colliding diagonally, we need to collide vs. tile corner
|
|
if(oH == 0) {
|
|
if(oV == 0) {
|
|
//collision with current cell
|
|
if(x < y) {
|
|
//penetration in x is smaller; project in x
|
|
var dx = obj.pos.x - t.pos.x;//get sign for projection along x-axis
|
|
|
|
//NOTE: should we handle the delta == 0 case?! and how? (project towards oldpos?)
|
|
if(dx < 0) {
|
|
obj.ReportCollisionVsWorld(-x, 0, -1, 0, t);
|
|
return Circle.COL_AXIS;
|
|
} else {
|
|
obj.ReportCollisionVsWorld(x, 0, 1, 0, t);
|
|
return Circle.COL_AXIS;
|
|
}
|
|
} else {
|
|
//penetration in y is smaller; project in y
|
|
var dy = obj.pos.y - t.pos.y;//get sign for projection along y-axis
|
|
|
|
//NOTE: should we handle the delta == 0 case?! and how? (project towards oldpos?)
|
|
if(dy < 0) {
|
|
obj.ReportCollisionVsWorld(0, -y, 0, -1, t);
|
|
return Circle.COL_AXIS;
|
|
} else {
|
|
obj.ReportCollisionVsWorld(0, y, 0, 1, t);
|
|
return Circle.COL_AXIS;
|
|
}
|
|
}
|
|
} else {
|
|
//collision with vertical neighbor
|
|
obj.ReportCollisionVsWorld(0, y * oV, 0, oV, t);
|
|
return Circle.COL_AXIS;
|
|
}
|
|
} else if(oV == 0) {
|
|
//collision with horizontal neighbor
|
|
obj.ReportCollisionVsWorld(x * oH, 0, oH, 0, t);
|
|
return Circle.COL_AXIS;
|
|
} else {
|
|
//diagonal collision
|
|
//get diag vertex position
|
|
var vx = t.pos.x + (oH * t.xw);
|
|
var vy = t.pos.y + (oV * t.yw);
|
|
var dx = obj.pos.x - vx;//calc vert->circle vector
|
|
|
|
var dy = obj.pos.y - vy;
|
|
var len = Math.sqrt(dx * dx + dy * dy);
|
|
var pen = obj.radius - len;
|
|
if(0 < pen) {
|
|
//vertex is in the circle; project outward
|
|
if(len == 0) {
|
|
//project out by 45deg
|
|
dx = oH / Math.SQRT2;
|
|
dy = oV / Math.SQRT2;
|
|
} else {
|
|
dx /= len;
|
|
dy /= len;
|
|
}
|
|
obj.ReportCollisionVsWorld(dx * pen, dy * pen, dx, dy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
}
|
|
return Circle.COL_NONE;
|
|
};
|
|
Circle.prototype.ProjCircle_45Deg = function (x, y, oH, oV, obj, t) {
|
|
//if we're colliding diagonally:
|
|
// -if obj is in the diagonal pointed to by the slope normal: we can't collide, do nothing
|
|
// -else, collide vs. the appropriate vertex
|
|
//if obj is in this tile: perform collision as for aabb-ve-45deg
|
|
//if obj is horiz OR very neighb in direction of slope: collide only vs. slope
|
|
//if obj is horiz or vert neigh against direction of slope: collide vs. face
|
|
var signx = t.signx;
|
|
var signy = t.signy;
|
|
var lenP;
|
|
if(oH == 0) {
|
|
if(oV == 0) {
|
|
//colliding with current tile
|
|
var sx = t.sx;
|
|
var sy = t.sy;
|
|
var ox = (obj.pos.x - (sx * obj.radius)) - t.pos.x;//this gives is the coordinates of the innermost
|
|
|
|
var oy = (obj.pos.y - (sy * obj.radius)) - t.pos.y;//point on the circle, relative to the tile center
|
|
|
|
//if the dotprod of (ox,oy) and (sx,sy) is negative, the innermost point is in the slope
|
|
//and we need toproject it out by the magnitude of the projection of (ox,oy) onto (sx,sy)
|
|
var dp = (ox * sx) + (oy * sy);
|
|
if(dp < 0) {
|
|
//collision; project delta onto slope and use this as the slope penetration vector
|
|
sx *= -dp//(sx,sy) is now the penetration vector
|
|
;
|
|
sy *= -dp;
|
|
//find the smallest axial projection vector
|
|
if(x < y) {
|
|
//penetration in x is smaller
|
|
lenP = x;
|
|
y = 0;
|
|
//get sign for projection along x-axis
|
|
if((obj.pos.x - t.pos.x) < 0) {
|
|
x *= -1;
|
|
}
|
|
} else {
|
|
//penetration in y is smaller
|
|
lenP = y;
|
|
x = 0;
|
|
//get sign for projection along y-axis
|
|
if((obj.pos.y - t.pos.y) < 0) {
|
|
y *= -1;
|
|
}
|
|
}
|
|
var lenN = Math.sqrt(sx * sx + sy * sy);
|
|
if(lenP < lenN) {
|
|
obj.ReportCollisionVsWorld(x, y, x / lenP, y / lenP, t);
|
|
return Circle.COL_AXIS;
|
|
} else {
|
|
obj.ReportCollisionVsWorld(sx, sy, t.sx, t.sy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
}
|
|
} else {
|
|
//colliding vertically
|
|
if((signy * oV) < 0) {
|
|
//colliding with face/edge
|
|
obj.ReportCollisionVsWorld(0, y * oV, 0, oV, t);
|
|
return Circle.COL_AXIS;
|
|
} else {
|
|
//we could only be colliding vs the slope OR a vertex
|
|
//look at the vector form the closest vert to the circle to decide
|
|
var sx = t.sx;
|
|
var sy = t.sy;
|
|
var ox = obj.pos.x - (t.pos.x - (signx * t.xw));//this gives is the coordinates of the innermost
|
|
|
|
var oy = obj.pos.y - (t.pos.y + (oV * t.yw));//point on the circle, relative to the closest tile vert
|
|
|
|
//if the component of (ox,oy) parallel to the normal's righthand normal
|
|
//has the same sign as the slope of the slope (the sign of the slope's slope is signx*signy)
|
|
//then we project by the vertex, otherwise by the normal.
|
|
//note that this is simply a VERY tricky/weird method of determining
|
|
//if the circle is in side the slope/face's voronoi region, or that of the vertex.
|
|
var perp = (ox * -sy) + (oy * sx);
|
|
if(0 < (perp * signx * signy)) {
|
|
//collide vs. vertex
|
|
var len = Math.sqrt(ox * ox + oy * oy);
|
|
var pen = obj.radius - len;
|
|
if(0 < pen) {
|
|
//note: if len=0, then perp=0 and we'll never reach here, so don't worry about div-by-0
|
|
ox /= len;
|
|
oy /= len;
|
|
obj.ReportCollisionVsWorld(ox * pen, oy * pen, ox, oy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
} else {
|
|
//collide vs. slope
|
|
//if the component of (ox,oy) parallel to the normal is less than the circle radius, we're
|
|
//penetrating the slope. note that this method of penetration calculation doesn't hold
|
|
//in general (i.e it won't work if the circle is in the slope), but works in this case
|
|
//because we know the circle is in a neighboring cell
|
|
var dp = (ox * sx) + (oy * sy);
|
|
var pen = obj.radius - Math.abs(dp);//note: we don't need the abs because we know the dp will be positive, but just in case..
|
|
|
|
if(0 < pen) {
|
|
//collision; circle out along normal by penetration amount
|
|
obj.ReportCollisionVsWorld(sx * pen, sy * pen, sx, sy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else if(oV == 0) {
|
|
//colliding horizontally
|
|
if((signx * oH) < 0) {
|
|
//colliding with face/edge
|
|
obj.ReportCollisionVsWorld(x * oH, 0, oH, 0, t);
|
|
return Circle.COL_AXIS;
|
|
} else {
|
|
//we could only be colliding vs the slope OR a vertex
|
|
//look at the vector form the closest vert to the circle to decide
|
|
var sx = t.sx;
|
|
var sy = t.sy;
|
|
var ox = obj.pos.x - (t.pos.x + (oH * t.xw));//this gives is the coordinates of the innermost
|
|
|
|
var oy = obj.pos.y - (t.pos.y - (signy * t.yw));//point on the circle, relative to the closest tile vert
|
|
|
|
//if the component of (ox,oy) parallel to the normal's righthand normal
|
|
//has the same sign as the slope of the slope (the sign of the slope's slope is signx*signy)
|
|
//then we project by the normal, otherwise by the vertex.
|
|
//(NOTE: this is the opposite logic of the vertical case;
|
|
// for vertical, if the perp prod and the slope's slope agree, it's outside.
|
|
// for horizontal, if the perp prod and the slope's slope agree, circle is inside.
|
|
// ..but this is only a property of flahs' coord system (i.e the rules might swap
|
|
// in righthanded systems))
|
|
//note that this is simply a VERY tricky/weird method of determining
|
|
//if the circle is in side the slope/face's voronio region, or that of the vertex.
|
|
var perp = (ox * -sy) + (oy * sx);
|
|
if((perp * signx * signy) < 0) {
|
|
//collide vs. vertex
|
|
var len = Math.sqrt(ox * ox + oy * oy);
|
|
var pen = obj.radius - len;
|
|
if(0 < pen) {
|
|
//note: if len=0, then perp=0 and we'll never reach here, so don't worry about div-by-0
|
|
ox /= len;
|
|
oy /= len;
|
|
obj.ReportCollisionVsWorld(ox * pen, oy * pen, ox, oy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
} else {
|
|
//collide vs. slope
|
|
//if the component of (ox,oy) parallel to the normal is less than the circle radius, we're
|
|
//penetrating the slope. note that this method of penetration calculation doesn't hold
|
|
//in general (i.e it won't work if the circle is in the slope), but works in this case
|
|
//because we know the circle is in a neighboring cell
|
|
var dp = (ox * sx) + (oy * sy);
|
|
var pen = obj.radius - Math.abs(dp);//note: we don't need the abs because we know the dp will be positive, but just in case..
|
|
|
|
if(0 < pen) {
|
|
//collision; circle out along normal by penetration amount
|
|
obj.ReportCollisionVsWorld(sx * pen, sy * pen, sx, sy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
//colliding diagonally
|
|
if(0 < ((signx * oH) + (signy * oV))) {
|
|
//the dotprod of slope normal and cell offset is strictly positive,
|
|
//therefore obj is in the diagonal neighb pointed at by the normal, and
|
|
//it cannot possibly reach/touch/penetrate the slope
|
|
return Circle.COL_NONE;
|
|
} else {
|
|
//collide vs. vertex
|
|
//get diag vertex position
|
|
var vx = t.pos.x + (oH * t.xw);
|
|
var vy = t.pos.y + (oV * t.yw);
|
|
var dx = obj.pos.x - vx;//calc vert->circle vector
|
|
|
|
var dy = obj.pos.y - vy;
|
|
var len = Math.sqrt(dx * dx + dy * dy);
|
|
var pen = obj.radius - len;
|
|
if(0 < pen) {
|
|
//vertex is in the circle; project outward
|
|
if(len == 0) {
|
|
//project out by 45deg
|
|
dx = oH / Math.SQRT2;
|
|
dy = oV / Math.SQRT2;
|
|
} else {
|
|
dx /= len;
|
|
dy /= len;
|
|
}
|
|
obj.ReportCollisionVsWorld(dx * pen, dy * pen, dx, dy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
}
|
|
}
|
|
return Circle.COL_NONE;
|
|
};
|
|
Circle.prototype.ProjCircle_Concave = function (x, y, oH, oV, obj, t) {
|
|
//if we're colliding diagonally:
|
|
// -if obj is in the diagonal pointed to by the slope normal: we can't collide, do nothing
|
|
// -else, collide vs. the appropriate vertex
|
|
//if obj is in this tile: perform collision as for aabb
|
|
//if obj is horiz OR very neighb in direction of slope: collide vs vert
|
|
//if obj is horiz or vert neigh against direction of slope: collide vs. face
|
|
var signx = t.signx;
|
|
var signy = t.signy;
|
|
var lenP;
|
|
if(oH == 0) {
|
|
if(oV == 0) {
|
|
//colliding with current tile
|
|
var ox = (t.pos.x + (signx * t.xw)) - obj.pos.x;//(ox,oy) is the vector from the circle to
|
|
|
|
var oy = (t.pos.y + (signy * t.yw)) - obj.pos.y;//tile-circle's center
|
|
|
|
var twid = t.xw * 2;
|
|
var trad = Math.sqrt(twid * twid + 0);//this gives us the radius of a circle centered on the tile's corner and extending to the opposite edge of the tile;
|
|
|
|
//note that this should be precomputed at compile-time since it's constant
|
|
var len = Math.sqrt(ox * ox + oy * oy);
|
|
var pen = (len + obj.radius) - trad;
|
|
if(0 < pen) {
|
|
//find the smallest axial projection vector
|
|
if(x < y) {
|
|
//penetration in x is smaller
|
|
lenP = x;
|
|
y = 0;
|
|
//get sign for projection along x-axis
|
|
if((obj.pos.x - t.pos.x) < 0) {
|
|
x *= -1;
|
|
}
|
|
} else {
|
|
//penetration in y is smaller
|
|
lenP = y;
|
|
x = 0;
|
|
//get sign for projection along y-axis
|
|
if((obj.pos.y - t.pos.y) < 0) {
|
|
y *= -1;
|
|
}
|
|
}
|
|
if(lenP < pen) {
|
|
obj.ReportCollisionVsWorld(x, y, x / lenP, y / lenP, t);
|
|
return Circle.COL_AXIS;
|
|
} else {
|
|
//we can assume that len >0, because if we're here then
|
|
//(len + obj.radius) > trad, and since obj.radius <= trad
|
|
//len MUST be > 0
|
|
ox /= len;
|
|
oy /= len;
|
|
obj.ReportCollisionVsWorld(ox * pen, oy * pen, ox, oy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
} else {
|
|
return Circle.COL_NONE;
|
|
}
|
|
} else {
|
|
//colliding vertically
|
|
if((signy * oV) < 0) {
|
|
//colliding with face/edge
|
|
obj.ReportCollisionVsWorld(0, y * oV, 0, oV, t);
|
|
return Circle.COL_AXIS;
|
|
} else {
|
|
//we could only be colliding vs the vertical tip
|
|
//get diag vertex position
|
|
var vx = t.pos.x - (signx * t.xw);
|
|
var vy = t.pos.y + (oV * t.yw);
|
|
var dx = obj.pos.x - vx;//calc vert->circle vector
|
|
|
|
var dy = obj.pos.y - vy;
|
|
var len = Math.sqrt(dx * dx + dy * dy);
|
|
var pen = obj.radius - len;
|
|
if(0 < pen) {
|
|
//vertex is in the circle; project outward
|
|
if(len == 0) {
|
|
//project out vertically
|
|
dx = 0;
|
|
dy = oV;
|
|
} else {
|
|
dx /= len;
|
|
dy /= len;
|
|
}
|
|
obj.ReportCollisionVsWorld(dx * pen, dy * pen, dx, dy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
}
|
|
}
|
|
} else if(oV == 0) {
|
|
//colliding horizontally
|
|
if((signx * oH) < 0) {
|
|
//colliding with face/edge
|
|
obj.ReportCollisionVsWorld(x * oH, 0, oH, 0, t);
|
|
return Circle.COL_AXIS;
|
|
} else {
|
|
//we could only be colliding vs the horizontal tip
|
|
//get diag vertex position
|
|
var vx = t.pos.x + (oH * t.xw);
|
|
var vy = t.pos.y - (signy * t.yw);
|
|
var dx = obj.pos.x - vx;//calc vert->circle vector
|
|
|
|
var dy = obj.pos.y - vy;
|
|
var len = Math.sqrt(dx * dx + dy * dy);
|
|
var pen = obj.radius - len;
|
|
if(0 < pen) {
|
|
//vertex is in the circle; project outward
|
|
if(len == 0) {
|
|
//project out horizontally
|
|
dx = oH;
|
|
dy = 0;
|
|
} else {
|
|
dx /= len;
|
|
dy /= len;
|
|
}
|
|
obj.ReportCollisionVsWorld(dx * pen, dy * pen, dx, dy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
}
|
|
} else {
|
|
//colliding diagonally
|
|
if(0 < ((signx * oH) + (signy * oV))) {
|
|
//the dotprod of slope normal and cell offset is strictly positive,
|
|
//therefore obj is in the diagonal neighb pointed at by the normal, and
|
|
//it cannot possibly reach/touch/penetrate the slope
|
|
return Circle.COL_NONE;
|
|
} else {
|
|
//collide vs. vertex
|
|
//get diag vertex position
|
|
var vx = t.pos.x + (oH * t.xw);
|
|
var vy = t.pos.y + (oV * t.yw);
|
|
var dx = obj.pos.x - vx;//calc vert->circle vector
|
|
|
|
var dy = obj.pos.y - vy;
|
|
var len = Math.sqrt(dx * dx + dy * dy);
|
|
var pen = obj.radius - len;
|
|
if(0 < pen) {
|
|
//vertex is in the circle; project outward
|
|
if(len == 0) {
|
|
//project out by 45deg
|
|
dx = oH / Math.SQRT2;
|
|
dy = oV / Math.SQRT2;
|
|
} else {
|
|
dx /= len;
|
|
dy /= len;
|
|
}
|
|
obj.ReportCollisionVsWorld(dx * pen, dy * pen, dx, dy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
}
|
|
}
|
|
return Circle.COL_NONE;
|
|
};
|
|
Circle.prototype.ProjCircle_Convex = function (x, y, oH, oV, obj, t) {
|
|
//if the object is horiz AND/OR vertical neighbor in the normal (signx,signy)
|
|
//direction, collide vs. tile-circle only.
|
|
//if we're colliding diagonally:
|
|
// -else, collide vs. the appropriate vertex
|
|
//if obj is in this tile: perform collision as for aabb
|
|
//if obj is horiz or vert neigh against direction of slope: collide vs. face
|
|
var signx = t.signx;
|
|
var signy = t.signy;
|
|
var lenP;
|
|
if(oH == 0) {
|
|
if(oV == 0) {
|
|
//colliding with current tile
|
|
var ox = obj.pos.x - (t.pos.x - (signx * t.xw));//(ox,oy) is the vector from the tile-circle to
|
|
|
|
var oy = obj.pos.y - (t.pos.y - (signy * t.yw));//the circle's center
|
|
|
|
var twid = t.xw * 2;
|
|
var trad = Math.sqrt(twid * twid + 0);//this gives us the radius of a circle centered on the tile's corner and extending to the opposite edge of the tile;
|
|
|
|
//note that this should be precomputed at compile-time since it's constant
|
|
var len = Math.sqrt(ox * ox + oy * oy);
|
|
var pen = (trad + obj.radius) - len;
|
|
if(0 < pen) {
|
|
//find the smallest axial projection vector
|
|
if(x < y) {
|
|
//penetration in x is smaller
|
|
lenP = x;
|
|
y = 0;
|
|
//get sign for projection along x-axis
|
|
if((obj.pos.x - t.pos.x) < 0) {
|
|
x *= -1;
|
|
}
|
|
} else {
|
|
//penetration in y is smaller
|
|
lenP = y;
|
|
x = 0;
|
|
//get sign for projection along y-axis
|
|
if((obj.pos.y - t.pos.y) < 0) {
|
|
y *= -1;
|
|
}
|
|
}
|
|
if(lenP < pen) {
|
|
obj.ReportCollisionVsWorld(x, y, x / lenP, y / lenP, t);
|
|
return Circle.COL_AXIS;
|
|
} else {
|
|
//note: len should NEVER be == 0, because if it is,
|
|
//projeciton by an axis shoudl always be shorter, and we should
|
|
//never arrive here
|
|
ox /= len;
|
|
oy /= len;
|
|
obj.ReportCollisionVsWorld(ox * pen, oy * pen, ox, oy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
}
|
|
} else {
|
|
//colliding vertically
|
|
if((signy * oV) < 0) {
|
|
//colliding with face/edge
|
|
obj.ReportCollisionVsWorld(0, y * oV, 0, oV, t);
|
|
return Circle.COL_AXIS;
|
|
} else {
|
|
//obj in neighboring cell pointed at by tile normal;
|
|
//we could only be colliding vs the tile-circle surface
|
|
var ox = obj.pos.x - (t.pos.x - (signx * t.xw));//(ox,oy) is the vector from the tile-circle to
|
|
|
|
var oy = obj.pos.y - (t.pos.y - (signy * t.yw));//the circle's center
|
|
|
|
var twid = t.xw * 2;
|
|
var trad = Math.sqrt(twid * twid + 0);//this gives us the radius of a circle centered on the tile's corner and extending to the opposite edge of the tile;
|
|
|
|
//note that this should be precomputed at compile-time since it's constant
|
|
var len = Math.sqrt(ox * ox + oy * oy);
|
|
var pen = (trad + obj.radius) - len;
|
|
if(0 < pen) {
|
|
//note: len should NEVER be == 0, because if it is,
|
|
//obj is not in a neighboring cell!
|
|
ox /= len;
|
|
oy /= len;
|
|
obj.ReportCollisionVsWorld(ox * pen, oy * pen, ox, oy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
}
|
|
}
|
|
} else if(oV == 0) {
|
|
//colliding horizontally
|
|
if((signx * oH) < 0) {
|
|
//colliding with face/edge
|
|
obj.ReportCollisionVsWorld(x * oH, 0, oH, 0, t);
|
|
return Circle.COL_AXIS;
|
|
} else {
|
|
//obj in neighboring cell pointed at by tile normal;
|
|
//we could only be colliding vs the tile-circle surface
|
|
var ox = obj.pos.x - (t.pos.x - (signx * t.xw));//(ox,oy) is the vector from the tile-circle to
|
|
|
|
var oy = obj.pos.y - (t.pos.y - (signy * t.yw));//the circle's center
|
|
|
|
var twid = t.xw * 2;
|
|
var trad = Math.sqrt(twid * twid + 0);//this gives us the radius of a circle centered on the tile's corner and extending to the opposite edge of the tile;
|
|
|
|
//note that this should be precomputed at compile-time since it's constant
|
|
var len = Math.sqrt(ox * ox + oy * oy);
|
|
var pen = (trad + obj.radius) - len;
|
|
if(0 < pen) {
|
|
//note: len should NEVER be == 0, because if it is,
|
|
//obj is not in a neighboring cell!
|
|
ox /= len;
|
|
oy /= len;
|
|
obj.ReportCollisionVsWorld(ox * pen, oy * pen, ox, oy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
}
|
|
} else {
|
|
//colliding diagonally
|
|
if(0 < ((signx * oH) + (signy * oV))) {
|
|
//obj in diag neighb cell pointed at by tile normal;
|
|
//we could only be colliding vs the tile-circle surface
|
|
var ox = obj.pos.x - (t.pos.x - (signx * t.xw));//(ox,oy) is the vector from the tile-circle to
|
|
|
|
var oy = obj.pos.y - (t.pos.y - (signy * t.yw));//the circle's center
|
|
|
|
var twid = t.xw * 2;
|
|
var trad = Math.sqrt(twid * twid + 0);//this gives us the radius of a circle centered on the tile's corner and extending to the opposite edge of the tile;
|
|
|
|
//note that this should be precomputed at compile-time since it's constant
|
|
var len = Math.sqrt(ox * ox + oy * oy);
|
|
var pen = (trad + obj.radius) - len;
|
|
if(0 < pen) {
|
|
//note: len should NEVER be == 0, because if it is,
|
|
//obj is not in a neighboring cell!
|
|
ox /= len;
|
|
oy /= len;
|
|
obj.ReportCollisionVsWorld(ox * pen, oy * pen, ox, oy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
} else {
|
|
//collide vs. vertex
|
|
//get diag vertex position
|
|
var vx = t.pos.x + (oH * t.xw);
|
|
var vy = t.pos.y + (oV * t.yw);
|
|
var dx = obj.pos.x - vx;//calc vert->circle vector
|
|
|
|
var dy = obj.pos.y - vy;
|
|
var len = Math.sqrt(dx * dx + dy * dy);
|
|
var pen = obj.radius - len;
|
|
if(0 < pen) {
|
|
//vertex is in the circle; project outward
|
|
if(len == 0) {
|
|
//project out by 45deg
|
|
dx = oH / Math.SQRT2;
|
|
dy = oV / Math.SQRT2;
|
|
} else {
|
|
dx /= len;
|
|
dy /= len;
|
|
}
|
|
obj.ReportCollisionVsWorld(dx * pen, dy * pen, dx, dy, t);
|
|
return Circle.COL_OTHER;
|
|
}
|
|
}
|
|
}
|
|
return Circle.COL_NONE;
|
|
};
|
|
return Circle;
|
|
})();
|
|
(function () {
|
|
var myGame = new Phaser.Game(this, 'game', 800, 600, init, create, update, render);
|
|
function init() {
|
|
myGame.loader.addImageFile('atari1', 'assets/sprites/atari130xe.png');
|
|
myGame.loader.load();
|
|
}
|
|
var cells;
|
|
var physics;
|
|
var b;
|
|
var c;
|
|
var t;
|
|
function create() {
|
|
this.physics = new NPhysics();
|
|
this.c = new Circle(200, 100, 25);
|
|
this.b = new AABB(200, 200, 50, 50);
|
|
// pos is center, not upper-left
|
|
this.cells = [];
|
|
var tid;
|
|
for(var i = 0; i < 10; i++) {
|
|
if(i % 2 == 0) {
|
|
console.log('pn');
|
|
tid = TileMapCell.TID_CONCAVEpn;
|
|
} else {
|
|
console.log('nn');
|
|
tid = TileMapCell.TID_CONCAVEnn;
|
|
}
|
|
//this.cells.push(new TileMapCell(100 + (i * 100), 500, 50, 50).SetState(tid));
|
|
this.cells.push(new TileMapCell(100 + (i * 100), 500, 50, 50).SetState(TileMapCell.TID_FULL));
|
|
}
|
|
//this.t = new TileMapCell(200, 500, 100, 100);
|
|
//this.t.SetState(TileMapCell.TID_FULL);
|
|
//this.t.SetState(TileMapCell.TID_45DEGpn);
|
|
//this.t.SetState(TileMapCell.TID_CONCAVEpn);
|
|
//this.t.SetState(TileMapCell.TID_CONVEXpn);
|
|
}
|
|
function update() {
|
|
var fx = 0;
|
|
var fy = 0;
|
|
if(myGame.input.keyboard.isDown(Phaser.Keyboard.LEFT)) {
|
|
fx -= 0.2;
|
|
} else if(myGame.input.keyboard.isDown(Phaser.Keyboard.RIGHT)) {
|
|
fx += 0.2;
|
|
}
|
|
if(myGame.input.keyboard.isDown(Phaser.Keyboard.UP)) {
|
|
fy -= 0.2 + 0.2;
|
|
} else if(myGame.input.keyboard.isDown(Phaser.Keyboard.DOWN)) {
|
|
fy += 0.2;
|
|
}
|
|
// update circle
|
|
var p = this.c.pos;
|
|
var o = this.c.oldpos;
|
|
var vx = p.x - o.x;
|
|
var vy = p.y - o.y;
|
|
var newx = Math.min(20, Math.max(-20, vx + fx));
|
|
var newy = Math.min(20, Math.max(-20, vy + fy));
|
|
p.x = o.x + newx;
|
|
p.y = o.y + newy;
|
|
this.c.IntegrateVerlet();
|
|
// update box
|
|
var p = this.b.pos;
|
|
var o = this.b.oldpos;
|
|
var vx = p.x - o.x;
|
|
var vy = p.y - o.y;
|
|
var newx = Math.min(20, Math.max(-20, vx + fx));
|
|
var newy = Math.min(20, Math.max(-20, vy + fy));
|
|
p.x = o.x + newx;
|
|
p.y = o.y + newy;
|
|
this.b.IntegrateVerlet();
|
|
for(var i = 0; i < this.cells.length; i++) {
|
|
this.c.CollideCircleVsTile(this.cells[i]);
|
|
//this.cells[i].render(myGame.stage.context);
|
|
}
|
|
this.c.CollideCircleVsWorldBounds();
|
|
this.b.CollideAABBVsWorldBounds();
|
|
}
|
|
function render() {
|
|
this.c.render(myGame.stage.context);
|
|
this.b.render(myGame.stage.context);
|
|
for(var i = 0; i < this.cells.length; i++) {
|
|
this.cells[i].render(myGame.stage.context);
|
|
}
|
|
}
|
|
})();
|