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phaser/wip/phaser clean up/Collision.js
Richard Davey 07298c8fcd More tidying up.
2013-09-13 16:24:01 +01:00

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JavaScript
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var Phaser;
(function (Phaser) {
var Collision = (function () {
function Collision(game) {
this._game = game;
Collision.T_VECTORS = [];
for(var i = 0; i < 10; i++) {
Collision.T_VECTORS.push(new Vector2());
}
Collision.T_ARRAYS = [];
for(var i = 0; i < 5; i++) {
Collision.T_ARRAYS.push([]);
}
}
Collision.LEFT = 0x0001;
Collision.RIGHT = 0x0010;
Collision.UP = 0x0100;
Collision.DOWN = 0x1000;
Collision.NONE = 0;
Collision.CEILING = Phaser.Collision.UP;
Collision.FLOOR = Phaser.Collision.DOWN;
Collision.WALL = Phaser.Collision.LEFT | Phaser.Collision.RIGHT;
Collision.ANY = Phaser.Collision.LEFT | Phaser.Collision.RIGHT | Phaser.Collision.UP | Phaser.Collision.DOWN;
Collision.OVERLAP_BIAS = 4;
Collision.TILE_OVERLAP = false;
Collision.lineToLine = function lineToLine(line1, line2, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
var denominator = (line1.x1 - line1.x2) * (line2.y1 - line2.y2) - (line1.y1 - line1.y2) * (line2.x1 - line2.x2);
if(denominator !== 0) {
output.result = true;
output.x = ((line1.x1 * line1.y2 - line1.y1 * line1.x2) * (line2.x1 - line2.x2) - (line1.x1 - line1.x2) * (line2.x1 * line2.y2 - line2.y1 * line2.x2)) / denominator;
output.y = ((line1.x1 * line1.y2 - line1.y1 * line1.x2) * (line2.y1 - line2.y2) - (line1.y1 - line1.y2) * (line2.x1 * line2.y2 - line2.y1 * line2.x2)) / denominator;
}
return output;
};
Collision.lineToLineSegment = function lineToLineSegment(line, seg, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
var denominator = (line.x1 - line.x2) * (seg.y1 - seg.y2) - (line.y1 - line.y2) * (seg.x1 - seg.x2);
if(denominator !== 0) {
output.x = ((line.x1 * line.y2 - line.y1 * line.x2) * (seg.x1 - seg.x2) - (line.x1 - line.x2) * (seg.x1 * seg.y2 - seg.y1 * seg.x2)) / denominator;
output.y = ((line.x1 * line.y2 - line.y1 * line.x2) * (seg.y1 - seg.y2) - (line.y1 - line.y2) * (seg.x1 * seg.y2 - seg.y1 * seg.x2)) / denominator;
var maxX = Math.max(seg.x1, seg.x2);
var minX = Math.min(seg.x1, seg.x2);
var maxY = Math.max(seg.y1, seg.y2);
var minY = Math.min(seg.y1, seg.y2);
if((output.x <= maxX && output.x >= minX) === true || (output.y <= maxY && output.y >= minY) === true) {
output.result = true;
}
}
return output;
};
Collision.lineToRawSegment = function lineToRawSegment(line, x1, y1, x2, y2, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
var denominator = (line.x1 - line.x2) * (y1 - y2) - (line.y1 - line.y2) * (x1 - x2);
if(denominator !== 0) {
output.x = ((line.x1 * line.y2 - line.y1 * line.x2) * (x1 - x2) - (line.x1 - line.x2) * (x1 * y2 - y1 * x2)) / denominator;
output.y = ((line.x1 * line.y2 - line.y1 * line.x2) * (y1 - y2) - (line.y1 - line.y2) * (x1 * y2 - y1 * x2)) / denominator;
var maxX = Math.max(x1, x2);
var minX = Math.min(x1, x2);
var maxY = Math.max(y1, y2);
var minY = Math.min(y1, y2);
if((output.x <= maxX && output.x >= minX) === true || (output.y <= maxY && output.y >= minY) === true) {
output.result = true;
}
}
return output;
};
Collision.lineToRay = function lineToRay(line1, ray, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
var denominator = (line1.x1 - line1.x2) * (ray.y1 - ray.y2) - (line1.y1 - line1.y2) * (ray.x1 - ray.x2);
if(denominator !== 0) {
output.x = ((line1.x1 * line1.y2 - line1.y1 * line1.x2) * (ray.x1 - ray.x2) - (line1.x1 - line1.x2) * (ray.x1 * ray.y2 - ray.y1 * ray.x2)) / denominator;
output.y = ((line1.x1 * line1.y2 - line1.y1 * line1.x2) * (ray.y1 - ray.y2) - (line1.y1 - line1.y2) * (ray.x1 * ray.y2 - ray.y1 * ray.x2)) / denominator;
output.result = true;
if(!(ray.x1 >= ray.x2) && output.x < ray.x1) {
output.result = false;
}
if(!(ray.y1 >= ray.y2) && output.y < ray.y1) {
output.result = false;
}
}
return output;
};
Collision.lineToCircle = function lineToCircle(line, circle, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
if(line.perp(circle.x, circle.y).length <= circle.radius) {
output.result = true;
}
return output;
};
Collision.lineToRectangle = function lineToRectangle(line, rect, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
Phaser.Collision.lineToRawSegment(line, rect.x, rect.y, rect.right, rect.y, output);
if(output.result === true) {
return output;
}
Phaser.Collision.lineToRawSegment(line, rect.x, rect.y, rect.x, rect.bottom, output);
if(output.result === true) {
return output;
}
Phaser.Collision.lineToRawSegment(line, rect.x, rect.bottom, rect.right, rect.bottom, output);
if(output.result === true) {
return output;
}
Phaser.Collision.lineToRawSegment(line, rect.right, rect.y, rect.right, rect.bottom, output);
return output;
};
Collision.lineSegmentToLineSegment = function lineSegmentToLineSegment(line1, line2, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
Phaser.Collision.lineToLineSegment(line1, line2);
if(output.result === true) {
if(!(output.x >= Math.min(line1.x1, line1.x2) && output.x <= Math.max(line1.x1, line1.x2) && output.y >= Math.min(line1.y1, line1.y2) && output.y <= Math.max(line1.y1, line1.y2))) {
output.result = false;
}
}
return output;
};
Collision.lineSegmentToRay = function lineSegmentToRay(line, ray, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
Phaser.Collision.lineToRay(line, ray, output);
if(output.result === true) {
if(!(output.x >= Math.min(line.x1, line.x2) && output.x <= Math.max(line.x1, line.x2) && output.y >= Math.min(line.y1, line.y2) && output.y <= Math.max(line.y1, line.y2))) {
output.result = false;
}
}
return output;
};
Collision.lineSegmentToCircle = function lineSegmentToCircle(seg, circle, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
var perp = seg.perp(circle.x, circle.y);
if(perp.length <= circle.radius) {
var maxX = Math.max(seg.x1, seg.x2);
var minX = Math.min(seg.x1, seg.x2);
var maxY = Math.max(seg.y1, seg.y2);
var minY = Math.min(seg.y1, seg.y2);
if((perp.x2 <= maxX && perp.x2 >= minX) && (perp.y2 <= maxY && perp.y2 >= minY)) {
output.result = true;
} else {
if(Phaser.Collision.circleContainsPoint(circle, {
x: seg.x1,
y: seg.y1
}) || Phaser.Collision.circleContainsPoint(circle, {
x: seg.x2,
y: seg.y2
})) {
output.result = true;
}
}
}
return output;
};
Collision.lineSegmentToRectangle = function lineSegmentToRectangle(seg, rect, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
if(rect.contains(seg.x1, seg.y1) && rect.contains(seg.x2, seg.y2)) {
output.result = true;
} else {
Phaser.Collision.lineToRawSegment(seg, rect.x, rect.y, rect.right, rect.bottom, output);
if(output.result === true) {
return output;
}
Phaser.Collision.lineToRawSegment(seg, rect.x, rect.y, rect.x, rect.bottom, output);
if(output.result === true) {
return output;
}
Phaser.Collision.lineToRawSegment(seg, rect.x, rect.bottom, rect.right, rect.bottom, output);
if(output.result === true) {
return output;
}
Phaser.Collision.lineToRawSegment(seg, rect.right, rect.y, rect.right, rect.bottom, output);
return output;
}
return output;
};
Collision.rayToRectangle = function rayToRectangle(ray, rect, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
Phaser.Collision.lineToRectangle(ray, rect, output);
return output;
};
Collision.rayToLineSegment = function rayToLineSegment(rayX1, rayY1, rayX2, rayY2, lineX1, lineY1, lineX2, lineY2, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
var r;
var s;
var d;
if((rayY2 - rayY1) / (rayX2 - rayX1) != (lineY2 - lineY1) / (lineX2 - lineX1)) {
d = (((rayX2 - rayX1) * (lineY2 - lineY1)) - (rayY2 - rayY1) * (lineX2 - lineX1));
if(d != 0) {
r = (((rayY1 - lineY1) * (lineX2 - lineX1)) - (rayX1 - lineX1) * (lineY2 - lineY1)) / d;
s = (((rayY1 - lineY1) * (rayX2 - rayX1)) - (rayX1 - lineX1) * (rayY2 - rayY1)) / d;
if(r >= 0) {
if(s >= 0 && s <= 1) {
output.result = true;
output.x = rayX1 + r * (rayX2 - rayX1);
output.y = rayY1 + r * (rayY2 - rayY1);
}
}
}
}
return output;
};
Collision.pointToRectangle = function pointToRectangle(point, rect, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
output.setTo(point.x, point.y);
output.result = rect.containsPoint(point);
return output;
};
Collision.rectangleToRectangle = function rectangleToRectangle(rect1, rect2, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
var leftX = Math.max(rect1.x, rect2.x);
var rightX = Math.min(rect1.right, rect2.right);
var topY = Math.max(rect1.y, rect2.y);
var bottomY = Math.min(rect1.bottom, rect2.bottom);
output.setTo(leftX, topY, rightX - leftX, bottomY - topY, rightX - leftX, bottomY - topY);
var cx = output.x + output.width * .5;
var cy = output.y + output.height * .5;
if((cx > rect1.x && cx < rect1.right) && (cy > rect1.y && cy < rect1.bottom)) {
output.result = true;
}
return output;
};
Collision.rectangleToCircle = function rectangleToCircle(rect, circle, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
return Phaser.Collision.circleToRectangle(circle, rect, output);
};
Collision.circleToCircle = function circleToCircle(circle1, circle2, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
output.result = ((circle1.radius + circle2.radius) * (circle1.radius + circle2.radius)) >= Phaser.Collision.distanceSquared(circle1.x, circle1.y, circle2.x, circle2.y);
return output;
};
Collision.circleToRectangle = function circleToRectangle(circle, rect, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
var inflatedRect = rect.clone();
inflatedRect.inflate(circle.radius, circle.radius);
output.result = inflatedRect.contains(circle.x, circle.y);
return output;
};
Collision.circleContainsPoint = function circleContainsPoint(circle, point, output) {
if (typeof output === "undefined") { output = new Phaser.IntersectResult(); }
output.result = circle.radius * circle.radius >= Phaser.Collision.distanceSquared(circle.x, circle.y, point.x, point.y);
return output;
};
Collision.prototype.overlap = function (object1, object2, notifyCallback, processCallback, context) {
if (typeof object1 === "undefined") { object1 = null; }
if (typeof object2 === "undefined") { object2 = null; }
if (typeof notifyCallback === "undefined") { notifyCallback = null; }
if (typeof processCallback === "undefined") { processCallback = null; }
if (typeof context === "undefined") { context = null; }
if(object1 == null) {
object1 = this._game.world.group;
}
if(object2 == object1) {
object2 = null;
}
Phaser.QuadTree.divisions = this._game.world.worldDivisions;
var quadTree = new Phaser.QuadTree(this._game.world.bounds.x, this._game.world.bounds.y, this._game.world.bounds.width, this._game.world.bounds.height);
quadTree.load(object1, object2, notifyCallback, processCallback, context);
var result = quadTree.execute();
quadTree.destroy();
quadTree = null;
return result;
};
Collision.separate = function separate(object1, object2) {
object1.collisionMask.update();
object2.collisionMask.update();
var separatedX = Phaser.Collision.separateX(object1, object2);
var separatedY = Phaser.Collision.separateY(object1, object2);
return separatedX || separatedY;
};
Collision.separateTile = function separateTile(object, x, y, width, height, mass, collideLeft, collideRight, collideUp, collideDown, separateX, separateY) {
object.collisionMask.update();
var separatedX = Phaser.Collision.separateTileX(object, x, y, width, height, mass, collideLeft, collideRight, separateX);
var separatedY = Phaser.Collision.separateTileY(object, x, y, width, height, mass, collideUp, collideDown, separateY);
return separatedX || separatedY;
};
Collision.separateTileX = function separateTileX(object, x, y, width, height, mass, collideLeft, collideRight, separate) {
if(object.immovable) {
return false;
}
var overlap = 0;
var objDelta = object.x - object.last.x;
if(objDelta != 0) {
var objDeltaAbs = (objDelta > 0) ? objDelta : -objDelta;
var objBounds = new Phaser.Quad(object.x - ((objDelta > 0) ? objDelta : 0), object.last.y, object.width + ((objDelta > 0) ? objDelta : -objDelta), object.height);
if((objBounds.x + objBounds.width > x) && (objBounds.x < x + width) && (objBounds.y + objBounds.height > y) && (objBounds.y < y + height)) {
var maxOverlap = objDeltaAbs + Phaser.Collision.OVERLAP_BIAS;
if(objDelta > 0) {
overlap = object.x + object.width - x;
if((overlap > maxOverlap) || !(object.allowCollisions & Phaser.Collision.RIGHT) || collideLeft == false) {
overlap = 0;
} else {
object.touching |= Phaser.Collision.RIGHT;
}
} else if(objDelta < 0) {
overlap = object.x - width - x;
if((-overlap > maxOverlap) || !(object.allowCollisions & Phaser.Collision.LEFT) || collideRight == false) {
overlap = 0;
} else {
object.touching |= Phaser.Collision.LEFT;
}
}
}
}
if(overlap != 0) {
if(separate == true) {
object.x = object.x - overlap;
object.velocity.x = -(object.velocity.x * object.elasticity);
}
Phaser.Collision.TILE_OVERLAP = true;
return true;
} else {
return false;
}
};
Collision.separateTileY = function separateTileY(object, x, y, width, height, mass, collideUp, collideDown, separate) {
if(object.immovable) {
return false;
}
var overlap = 0;
var objDelta = object.y - object.last.y;
if(objDelta != 0) {
var objDeltaAbs = (objDelta > 0) ? objDelta : -objDelta;
var objBounds = new Phaser.Quad(object.x, object.y - ((objDelta > 0) ? objDelta : 0), object.width, object.height + objDeltaAbs);
if((objBounds.x + objBounds.width > x) && (objBounds.x < x + width) && (objBounds.y + objBounds.height > y) && (objBounds.y < y + height)) {
var maxOverlap = objDeltaAbs + Phaser.Collision.OVERLAP_BIAS;
if(objDelta > 0) {
overlap = object.y + object.height - y;
if((overlap > maxOverlap) || !(object.allowCollisions & Phaser.Collision.DOWN) || collideUp == false) {
overlap = 0;
} else {
object.touching |= Phaser.Collision.DOWN;
}
} else if(objDelta < 0) {
overlap = object.y - height - y;
if((-overlap > maxOverlap) || !(object.allowCollisions & Phaser.Collision.UP) || collideDown == false) {
overlap = 0;
} else {
object.touching |= Phaser.Collision.UP;
}
}
}
}
if(overlap != 0) {
if(separate == true) {
object.y = object.y - overlap;
object.velocity.y = -(object.velocity.y * object.elasticity);
}
Phaser.Collision.TILE_OVERLAP = true;
return true;
} else {
return false;
}
};
Collision.NEWseparateTileX = function NEWseparateTileX(object, x, y, width, height, mass, collideLeft, collideRight, separate) {
if(object.immovable) {
return false;
}
var overlap = 0;
if(object.collisionMask.deltaX != 0) {
if(object.collisionMask.intersectsRaw(x, x + width, y, y + height)) {
var maxOverlap = object.collisionMask.deltaXAbs + Phaser.Collision.OVERLAP_BIAS;
if(object.collisionMask.deltaX > 0) {
overlap = object.collisionMask.right - x;
if((overlap > maxOverlap) || !(object.allowCollisions & Phaser.Collision.RIGHT) || collideLeft == false) {
overlap = 0;
} else {
object.touching |= Phaser.Collision.RIGHT;
}
} else if(object.collisionMask.deltaX < 0) {
overlap = object.collisionMask.x - width - x;
if((-overlap > maxOverlap) || !(object.allowCollisions & Phaser.Collision.LEFT) || collideRight == false) {
overlap = 0;
} else {
object.touching |= Phaser.Collision.LEFT;
}
}
}
}
if(overlap != 0) {
if(separate == true) {
object.x = object.x - overlap;
object.velocity.x = -(object.velocity.x * object.elasticity);
}
Phaser.Collision.TILE_OVERLAP = true;
return true;
} else {
return false;
}
};
Collision.NEWseparateTileY = function NEWseparateTileY(object, x, y, width, height, mass, collideUp, collideDown, separate) {
if(object.immovable) {
return false;
}
var overlap = 0;
if(object.collisionMask.deltaY != 0) {
if(object.collisionMask.intersectsRaw(x, x + width, y, y + height)) {
var maxOverlap = object.collisionMask.deltaYAbs + Phaser.Collision.OVERLAP_BIAS;
if(object.collisionMask.deltaY > 0) {
overlap = object.collisionMask.bottom - y;
if((overlap > maxOverlap) || !(object.allowCollisions & Phaser.Collision.DOWN) || collideUp == false) {
overlap = 0;
} else {
object.touching |= Phaser.Collision.DOWN;
}
} else if(object.collisionMask.deltaY < 0) {
overlap = object.collisionMask.y - height - y;
if((-overlap > maxOverlap) || !(object.allowCollisions & Phaser.Collision.UP) || collideDown == false) {
overlap = 0;
} else {
object.touching |= Phaser.Collision.UP;
}
}
}
}
if(overlap != 0) {
if(separate == true) {
object.y = object.y - overlap;
object.velocity.y = -(object.velocity.y * object.elasticity);
}
Phaser.Collision.TILE_OVERLAP = true;
return true;
} else {
return false;
}
};
Collision.separateX = function separateX(object1, object2) {
if(object1.immovable && object2.immovable) {
return false;
}
var overlap = 0;
if(object1.collisionMask.deltaX != object2.collisionMask.deltaX) {
if(object1.collisionMask.intersects(object2.collisionMask)) {
var maxOverlap = object1.collisionMask.deltaXAbs + object2.collisionMask.deltaXAbs + Phaser.Collision.OVERLAP_BIAS;
if(object1.collisionMask.deltaX > object2.collisionMask.deltaX) {
overlap = object1.collisionMask.right - object2.collisionMask.x;
if((overlap > maxOverlap) || !(object1.allowCollisions & Phaser.Collision.RIGHT) || !(object2.allowCollisions & Phaser.Collision.LEFT)) {
overlap = 0;
} else {
object1.touching |= Phaser.Collision.RIGHT;
object2.touching |= Phaser.Collision.LEFT;
}
} else if(object1.collisionMask.deltaX < object2.collisionMask.deltaX) {
overlap = object1.collisionMask.x - object2.collisionMask.width - object2.collisionMask.x;
if((-overlap > maxOverlap) || !(object1.allowCollisions & Phaser.Collision.LEFT) || !(object2.allowCollisions & Phaser.Collision.RIGHT)) {
overlap = 0;
} else {
object1.touching |= Phaser.Collision.LEFT;
object2.touching |= Phaser.Collision.RIGHT;
}
}
}
}
if(overlap != 0) {
var obj1Velocity = object1.velocity.x;
var obj2Velocity = object2.velocity.x;
if(!object1.immovable && !object2.immovable) {
overlap *= 0.5;
object1.x = object1.x - overlap;
object2.x += overlap;
var obj1NewVelocity = Math.sqrt((obj2Velocity * obj2Velocity * object2.mass) / object1.mass) * ((obj2Velocity > 0) ? 1 : -1);
var obj2NewVelocity = Math.sqrt((obj1Velocity * obj1Velocity * object1.mass) / object2.mass) * ((obj1Velocity > 0) ? 1 : -1);
var average = (obj1NewVelocity + obj2NewVelocity) * 0.5;
obj1NewVelocity -= average;
obj2NewVelocity -= average;
object1.velocity.x = average + obj1NewVelocity * object1.elasticity;
object2.velocity.x = average + obj2NewVelocity * object2.elasticity;
} else if(!object1.immovable) {
object1.x = object1.x - overlap;
object1.velocity.x = obj2Velocity - obj1Velocity * object1.elasticity;
} else if(!object2.immovable) {
object2.x += overlap;
object2.velocity.x = obj1Velocity - obj2Velocity * object2.elasticity;
}
return true;
} else {
return false;
}
};
Collision.separateY = function separateY(object1, object2) {
if(object1.immovable && object2.immovable) {
return false;
}
var overlap = 0;
if(object1.collisionMask.deltaY != object2.collisionMask.deltaY) {
if(object1.collisionMask.intersects(object2.collisionMask)) {
var maxOverlap = object1.collisionMask.deltaYAbs + object2.collisionMask.deltaYAbs + Phaser.Collision.OVERLAP_BIAS;
if(object1.collisionMask.deltaY > object2.collisionMask.deltaY) {
overlap = object1.collisionMask.bottom - object2.collisionMask.y;
if((overlap > maxOverlap) || !(object1.allowCollisions & Phaser.Collision.DOWN) || !(object2.allowCollisions & Phaser.Collision.UP)) {
overlap = 0;
} else {
object1.touching |= Phaser.Collision.DOWN;
object2.touching |= Phaser.Collision.UP;
}
} else if(object1.collisionMask.deltaY < object2.collisionMask.deltaY) {
overlap = object1.collisionMask.y - object2.collisionMask.height - object2.collisionMask.y;
if((-overlap > maxOverlap) || !(object1.allowCollisions & Phaser.Collision.UP) || !(object2.allowCollisions & Phaser.Collision.DOWN)) {
overlap = 0;
} else {
object1.touching |= Phaser.Collision.UP;
object2.touching |= Phaser.Collision.DOWN;
}
}
}
}
if(overlap != 0) {
var obj1Velocity = object1.velocity.y;
var obj2Velocity = object2.velocity.y;
if(!object1.immovable && !object2.immovable) {
overlap *= 0.5;
object1.y = object1.y - overlap;
object2.y += overlap;
var obj1NewVelocity = Math.sqrt((obj2Velocity * obj2Velocity * object2.mass) / object1.mass) * ((obj2Velocity > 0) ? 1 : -1);
var obj2NewVelocity = Math.sqrt((obj1Velocity * obj1Velocity * object1.mass) / object2.mass) * ((obj1Velocity > 0) ? 1 : -1);
var average = (obj1NewVelocity + obj2NewVelocity) * 0.5;
obj1NewVelocity -= average;
obj2NewVelocity -= average;
object1.velocity.y = average + obj1NewVelocity * object1.elasticity;
object2.velocity.y = average + obj2NewVelocity * object2.elasticity;
} else if(!object1.immovable) {
object1.y = object1.y - overlap;
object1.velocity.y = obj2Velocity - obj1Velocity * object1.elasticity;
if(object2.active && object2.moves && (object1.collisionMask.deltaY > object2.collisionMask.deltaY)) {
object1.x += object2.x - object2.last.x;
}
} else if(!object2.immovable) {
object2.y += overlap;
object2.velocity.y = obj1Velocity - obj2Velocity * object2.elasticity;
if(object1.active && object1.moves && (object1.collisionMask.deltaY < object2.collisionMask.deltaY)) {
object2.x += object1.x - object1.last.x;
}
}
return true;
} else {
return false;
}
};
Collision.distance = function distance(x1, y1, x2, y2) {
return Math.sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));
};
Collision.distanceSquared = function distanceSquared(x1, y1, x2, y2) {
return (x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1);
};
Collision.flattenPointsOn = function flattenPointsOn(points, normal, result) {
var min = Number.MAX_VALUE;
var max = -Number.MAX_VALUE;
var len = points.length;
for(var i = 0; i < len; i++) {
var dot = points[i].dot(normal);
if(dot < min) {
min = dot;
}
if(dot > max) {
max = dot;
}
}
result[0] = min;
result[1] = max;
};
Collision.isSeparatingAxis = function isSeparatingAxis(aPos, bPos, aPoints, bPoints, axis, response) {
if (typeof response === "undefined") { response = null; }
var rangeA = Phaser.Collision.T_ARRAYS.pop();
var rangeB = Phaser.Collision.T_ARRAYS.pop();
var offsetV = Phaser.Collision.T_VECTORS.pop().copyFrom(bPos).sub(aPos);
var projectedOffset = offsetV.dot(axis);
Phaser.Collision.flattenPointsOn(aPoints, axis, rangeA);
Phaser.Collision.flattenPointsOn(bPoints, axis, rangeB);
rangeB[0] += projectedOffset;
rangeB[1] += projectedOffset;
if(rangeA[0] > rangeB[1] || rangeB[0] > rangeA[1]) {
Phaser.Collision.T_VECTORS.push(offsetV);
Phaser.Collision.T_ARRAYS.push(rangeA);
Phaser.Collision.T_ARRAYS.push(rangeB);
return true;
}
if(response) {
var overlap = 0;
if(rangeA[0] < rangeB[0]) {
response.aInB = false;
if(rangeA[1] < rangeB[1]) {
overlap = rangeA[1] - rangeB[0];
response.bInA = false;
} else {
var option1 = rangeA[1] - rangeB[0];
var option2 = rangeB[1] - rangeA[0];
overlap = option1 < option2 ? option1 : -option2;
}
} else {
response.bInA = false;
if(rangeA[1] > rangeB[1]) {
overlap = rangeA[0] - rangeB[1];
response.aInB = false;
} else {
var option1 = rangeA[1] - rangeB[0];
var option2 = rangeB[1] - rangeA[0];
overlap = option1 < option2 ? option1 : -option2;
}
}
var absOverlap = Math.abs(overlap);
if(absOverlap < response.overlap) {
response.overlap = absOverlap;
response.overlapN.copyFrom(axis);
if(overlap < 0) {
response.overlapN.reverse();
}
}
}
Phaser.Collision.T_VECTORS.push(offsetV);
Phaser.Collision.T_ARRAYS.push(rangeA);
Phaser.Collision.T_ARRAYS.push(rangeB);
return false;
};
Collision.LEFT_VORNOI_REGION = -1;
Collision.MIDDLE_VORNOI_REGION = 0;
Collision.RIGHT_VORNOI_REGION = 1;
Collision.vornoiRegion = function vornoiRegion(line, point) {
var len2 = line.length2();
var dp = point.dot(line);
if(dp < 0) {
return Phaser.Collision.LEFT_VORNOI_REGION;
} else if(dp > len2) {
return Phaser.Collision.RIGHT_VORNOI_REGION;
} else {
return Phaser.Collision.MIDDLE_VORNOI_REGION;
}
};
Collision.testCircleCircle = function testCircleCircle(a, b, response) {
if (typeof response === "undefined") { response = null; }
var differenceV = Phaser.Collision.T_VECTORS.pop().copyFrom(b.pos).sub(a.pos);
var totalRadius = a.radius + b.radius;
var totalRadiusSq = totalRadius * totalRadius;
var distanceSq = differenceV.length2();
if(distanceSq > totalRadiusSq) {
Phaser.Collision.T_VECTORS.push(differenceV);
return false;
}
if(response) {
var dist = Math.sqrt(distanceSq);
response.a = a;
response.b = b;
response.overlap = totalRadius - dist;
response.overlapN.copyFrom(differenceV.normalize());
response.overlapV.copyFrom(differenceV).scale(response.overlap);
response.aInB = a.radius <= b.radius && dist <= b.radius - a.radius;
response.bInA = b.radius <= a.radius && dist <= a.radius - b.radius;
}
Phaser.Collision.T_VECTORS.push(differenceV);
return true;
};
Collision.testPolygonCircle = function testPolygonCircle(polygon, circle, response) {
if (typeof response === "undefined") { response = null; }
var circlePos = Phaser.Collision.T_VECTORS.pop().copyFrom(circle.pos).sub(polygon.pos);
var radius = circle.radius;
var radius2 = radius * radius;
var points = polygon.points;
var len = points.length;
var edge = Collision.T_VECTORS.pop();
var point = Collision.T_VECTORS.pop();
for(var i = 0; i < len; i++) {
var next = i === len - 1 ? 0 : i + 1;
var prev = i === 0 ? len - 1 : i - 1;
var overlap = 0;
var overlapN = null;
edge.copyFrom(polygon.edges[i]);
point.copyFrom(circlePos).sub(points[i]);
if(response && point.length2() > radius2) {
response.aInB = false;
}
var region = Collision.vornoiRegion(edge, point);
if(region === Phaser.Collision.LEFT_VORNOI_REGION) {
edge.copyFrom(polygon.edges[prev]);
var point2 = Phaser.Collision.T_VECTORS.pop().copyFrom(circlePos).sub(points[prev]);
region = Collision.vornoiRegion(edge, point2);
if(region === Phaser.Collision.RIGHT_VORNOI_REGION) {
var dist = point.length2();
if(dist > radius) {
Phaser.Collision.T_VECTORS.push(circlePos);
Phaser.Collision.T_VECTORS.push(edge);
Phaser.Collision.T_VECTORS.push(point);
Phaser.Collision.T_VECTORS.push(point2);
return false;
} else if(response) {
response.bInA = false;
overlapN = point.normalize();
overlap = radius - dist;
}
}
Phaser.Collision.T_VECTORS.push(point2);
} else if(region === Phaser.Collision.RIGHT_VORNOI_REGION) {
edge.copyFrom(polygon.edges[next]);
point.copyFrom(circlePos).sub(points[next]);
region = Collision.vornoiRegion(edge, point);
if(region === Phaser.Collision.LEFT_VORNOI_REGION) {
var dist = point.length2();
if(dist > radius) {
Phaser.Collision.T_VECTORS.push(circlePos);
Phaser.Collision.T_VECTORS.push(edge);
Phaser.Collision.T_VECTORS.push(point);
return false;
} else if(response) {
response.bInA = false;
overlapN = point.normalize();
overlap = radius - dist;
}
}
} else {
var normal = edge.perp().normalize();
var dist = point.dot(normal);
var distAbs = Math.abs(dist);
if(dist > 0 && distAbs > radius) {
Phaser.Collision.T_VECTORS.push(circlePos);
Phaser.Collision.T_VECTORS.push(normal);
Phaser.Collision.T_VECTORS.push(point);
return false;
} else if(response) {
overlapN = normal;
overlap = radius - dist;
if(dist >= 0 || overlap < 2 * radius) {
response.bInA = false;
}
}
}
if(overlapN && response && Math.abs(overlap) < Math.abs(response.overlap)) {
response.overlap = overlap;
response.overlapN.copyFrom(overlapN);
}
}
if(response) {
response.a = polygon;
response.b = circle;
response.overlapV.copyFrom(response.overlapN).scale(response.overlap);
}
Phaser.Collision.T_VECTORS.push(circlePos);
Phaser.Collision.T_VECTORS.push(edge);
Phaser.Collision.T_VECTORS.push(point);
return true;
};
Collision.testCirclePolygon = function testCirclePolygon(circle, polygon, response) {
if (typeof response === "undefined") { response = null; }
var result = Phaser.Collision.testPolygonCircle(polygon, circle, response);
if(result && response) {
var a = response.a;
var aInB = response.aInB;
response.overlapN.reverse();
response.overlapV.reverse();
response.a = response.b;
response.b = a;
response.aInB = response.bInA;
response.bInA = aInB;
}
return result;
};
Collision.testPolygonPolygon = function testPolygonPolygon(a, b, response) {
if (typeof response === "undefined") { response = null; }
var aPoints = a.points;
var aLen = aPoints.length;
var bPoints = b.points;
var bLen = bPoints.length;
for(var i = 0; i < aLen; i++) {
if(Phaser.Collision.isSeparatingAxis(a.pos, b.pos, aPoints, bPoints, a.normals[i], response)) {
return false;
}
}
for(var i = 0; i < bLen; i++) {
if(Phaser.Collision.isSeparatingAxis(a.pos, b.pos, aPoints, bPoints, b.normals[i], response)) {
return false;
}
}
if(response) {
response.a = a;
response.b = b;
response.overlapV.copyFrom(response.overlapN).scale(response.overlap);
}
return true;
};
return Collision;
})();
Phaser.Collision = Collision;
})(Phaser || (Phaser = {}));
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