phaser/Phaser/physics/aabb/ProjAABB67Deg.js
Richard Davey 142348f70b Updates
2013-08-11 21:31:35 +01:00

108 lines
4.5 KiB
JavaScript

var Phaser;
(function (Phaser) {
(function (Physics) {
/// <reference path="../../_definitions.ts" />
/**
* Phaser - Physics - Projection
*/
(function (Projection) {
var AABB67Deg = (function () {
function AABB67Deg() {
}
AABB67Deg.CollideS = function (x, y, obj, t) {
var signx = t.signx;
var signy = t.signy;
var px = obj.pos.x - (signx * obj.xw);
var penX = t.pos.x - px;
if (0 < (penX * signx)) {
var ox = (obj.pos.x - (signx * obj.xw)) - (t.pos.x - (signx * t.xw));
var oy = (obj.pos.y - (signy * obj.yw)) - (t.pos.y + (signy * t.yw));
var sx = t.sx;
var sy = t.sy;
//if the dotprod of (ox,oy) and (sx,sy) is negative, the corner is in the slope
//and we need to project 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 to displace the object
sx *= -dp;
sy *= -dp;
var lenN = Math.sqrt(sx * sx + sy * sy);
var lenP = Math.sqrt(x * x + y * y);
var aX = Math.abs(penX);
if (lenP < lenN) {
if (aX < lenP) {
obj.reportCollisionVsWorld(penX, 0, penX / aX, 0, t);
return Phaser.Physics.AABB.COL_OTHER;
} else {
obj.reportCollisionVsWorld(x, y, x / lenP, y / lenP, t);
return Phaser.Physics.AABB.COL_AXIS;
}
} else {
if (aX < lenN) {
obj.reportCollisionVsWorld(penX, 0, penX / aX, 0, t);
return Phaser.Physics.AABB.COL_OTHER;
} else {
obj.reportCollisionVsWorld(sx, sy, t.sx, t.sy, t);
return Phaser.Physics.AABB.COL_OTHER;
}
}
}
}
//if we've reached this point, no collision has occured
return Phaser.Physics.AABB.COL_NONE;
};
AABB67Deg.CollideB = function (x, y, obj, t) {
var signx = t.signx;
var signy = t.signy;
var ox = (obj.pos.x - (signx * obj.xw)) - (t.pos.x + (signx * t.xw));
var oy = (obj.pos.y - (signy * obj.yw)) - (t.pos.y - (signy * t.yw));
var sx = t.sx;
var sy = t.sy;
//if the dotprod of (ox,oy) and (sx,sy) is negative, the corner 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 to displace the object
sx *= -dp;
sy *= -dp;
var lenN = Math.sqrt(sx * sx + sy * sy);
var lenP = Math.sqrt(x * x + y * y);
if (lenP < lenN) {
obj.reportCollisionVsWorld(x, y, x / lenP, y / lenP, t);
return Phaser.Physics.AABB.COL_AXIS;
} else {
obj.reportCollisionVsWorld(sx, sy, t.sx, t.sy, t);
return Phaser.Physics.AABB.COL_OTHER;
}
}
return Phaser.Physics.AABB.COL_NONE;
};
return AABB67Deg;
})();
Projection.AABB67Deg = AABB67Deg;
})(Physics.Projection || (Physics.Projection = {}));
var Projection = Physics.Projection;
})(Phaser.Physics || (Phaser.Physics = {}));
var Physics = Phaser.Physics;
})(Phaser || (Phaser = {}));