+ /**
+* @author Richard Davey <rich@photonstorm.com>
+* @copyright 2014 Photon Storm Ltd.
+* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
+*/
+
+/**
+* Ninja Physics AABB constructor.
+* Note: This class could be massively optimised and reduced in size. I leave that challenge up to you.
+*
+* @class Phaser.Physics.Ninja.AABB
+* @classdesc Arcade Physics Constructor
+* @constructor
+* @param {Phaser.Physics.Ninja.Body} body - The body that owns this shape.
+* @param {number} x - The x coordinate to create this shape at.
+* @param {number} y - The y coordinate to create this shape at.
+* @param {number} width - The width of this AABB.
+* @param {number} height - The height of this AABB.
+*/
+Phaser.Physics.Ninja.AABB = function (body, x, y, width, height) {
+
+ /**
+ * @property {Phaser.Physics.Ninja.Body} system - A reference to the body that owns this shape.
+ */
+ this.body = body;
+
+ /**
+ * @property {Phaser.Physics.Ninja} system - A reference to the physics system.
+ */
+ this.system = body.system;
+
+ /**
+ * @property {Phaser.Point} pos - The position of this object.
+ */
+ this.pos = new Phaser.Point(x, y);
+
+ /**
+ * @property {Phaser.Point} oldpos - The position of this object in the previous update.
+ */
+ this.oldpos = new Phaser.Point(x, y);
+
+ /**
+ * @property {number} xw - Half the width.
+ * @readonly
+ */
+ this.xw = Math.abs(width / 2);
+
+ /**
+ * @property {number} xw - Half the height.
+ * @readonly
+ */
+ this.yw = Math.abs(height / 2);
+
+ /**
+ * @property {number} width - The width.
+ * @readonly
+ */
+ this.width = width;
+
+ /**
+ * @property {number} height - The height.
+ * @readonly
+ */
+ this.height = height;
+
+ /**
+ * @property {number} oH - Internal var.
+ * @private
+ */
+ this.oH = 0;
+
+ /**
+ * @property {number} oV - Internal var.
+ * @private
+ */
+ this.oV = 0;
+
+ /**
+ * @property {Phaser.Point} velocity - The velocity of this object.
+ */
+ this.velocity = new Phaser.Point();
+
+ /**
+ * @property {object} aabbTileProjections - All of the collision response handlers.
+ */
+ this.aabbTileProjections = {};
+
+ this.aabbTileProjections[Phaser.Physics.Ninja.Tile.TYPE_FULL] = this.projAABB_Full;
+ this.aabbTileProjections[Phaser.Physics.Ninja.Tile.TYPE_45DEG] = this.projAABB_45Deg;
+ this.aabbTileProjections[Phaser.Physics.Ninja.Tile.TYPE_CONCAVE] = this.projAABB_Concave;
+ this.aabbTileProjections[Phaser.Physics.Ninja.Tile.TYPE_CONVEX] = this.projAABB_Convex;
+ this.aabbTileProjections[Phaser.Physics.Ninja.Tile.TYPE_22DEGs] = this.projAABB_22DegS;
+ this.aabbTileProjections[Phaser.Physics.Ninja.Tile.TYPE_22DEGb] = this.projAABB_22DegB;
+ this.aabbTileProjections[Phaser.Physics.Ninja.Tile.TYPE_67DEGs] = this.projAABB_67DegS;
+ this.aabbTileProjections[Phaser.Physics.Ninja.Tile.TYPE_67DEGb] = this.projAABB_67DegB;
+ this.aabbTileProjections[Phaser.Physics.Ninja.Tile.TYPE_HALF] = this.projAABB_Half;
+
+};
+
+Phaser.Physics.Ninja.AABB.prototype.constructor = Phaser.Physics.Ninja.AABB;
+
+Phaser.Physics.Ninja.AABB.COL_NONE = 0;
+Phaser.Physics.Ninja.AABB.COL_AXIS = 1;
+Phaser.Physics.Ninja.AABB.COL_OTHER = 2;
+
+Phaser.Physics.Ninja.AABB.prototype = {
+
+ /**
+ * Updates this AABBs position.
+ *
+ * @method Phaser.Physics.Ninja.AABB#integrate
+ */
+ integrate: function () {
+
+ var px = this.pos.x;
+ var py = this.pos.y;
+
+ // integrate
+ this.pos.x += (this.body.drag * this.pos.x) - (this.body.drag * this.oldpos.x);
+ this.pos.y += (this.body.drag * this.pos.y) - (this.body.drag * this.oldpos.y) + (this.system.gravity * this.body.gravityScale);
+
+ // store
+ this.velocity.set(this.pos.x - px, this.pos.y - py);
+ this.oldpos.set(px, py);
+
+ },
+
+ /**
+ * Process a world collision and apply the resulting forces.
+ *
+ * @method Phaser.Physics.Ninja.AABB#reportCollisionVsWorld
+ * @param {number} px - The tangent velocity
+ * @param {number} py - The tangent velocity
+ * @param {number} dx - Collision normal
+ * @param {number} dy - Collision normal
+ * @param {number} obj - Object this AABB collided with
+ */
+ 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, fx, fy;
+
+ if (dp < 0)
+ {
+ fx = tx * this.body.friction;
+ fy = ty * this.body.friction;
+
+ b = 1 + this.body.bounce;
+
+ bx = (nx * b);
+ by = (ny * b);
+
+ if (dx === 1)
+ {
+ this.body.touching.left = true;
+ }
+ else if (dx === -1)
+ {
+ this.body.touching.right = true;
+ }
+
+ if (dy === 1)
+ {
+ this.body.touching.up = true;
+ }
+ else if (dy === -1)
+ {
+ this.body.touching.down = true;
+ }
+ }
+ else
+ {
+ // Moving out of collision, do not apply forces
+ bx = by = fx = fy = 0;
+ }
+
+ // Project object out of collision
+ p.x += px;
+ p.y += py;
+
+ // Apply bounce+friction impulses which alter velocity
+ o.x += px + bx + fx;
+ o.y += py + by + fy;
+
+ },
+
+ reverse: function () {
+
+ var vx = this.pos.x - this.oldpos.x;
+ var vy = this.pos.y - this.oldpos.y;
+
+ if (this.oldpos.x < this.pos.x)
+ {
+ this.oldpos.x = this.pos.x + vx;
+ // this.oldpos.x = this.pos.x + (vx + 1 + this.body.bounce);
+ }
+ else if (this.oldpos.x > this.pos.x)
+ {
+ this.oldpos.x = this.pos.x - vx;
+ // this.oldpos.x = this.pos.x - (vx + 1 + this.body.bounce);
+ }
+
+ if (this.oldpos.y < this.pos.y)
+ {
+ this.oldpos.y = this.pos.y + vy;
+ // this.oldpos.y = this.pos.y + (vy + 1 + this.body.bounce);
+ }
+ else if (this.oldpos.y > this.pos.y)
+ {
+ this.oldpos.y = this.pos.y - vy;
+ // this.oldpos.y = this.pos.y - (vy + 1 + this.body.bounce);
+ }
+
+ },
+
+ /**
+ * Process a body collision and apply the resulting forces. Still very much WIP and doesn't work fully. Feel free to fix!
+ *
+ * @method Phaser.Physics.Ninja.AABB#reportCollisionVsBody
+ * @param {number} px - The tangent velocity
+ * @param {number} py - The tangent velocity
+ * @param {number} dx - Collision normal
+ * @param {number} dy - Collision normal
+ * @param {number} obj - Object this AABB collided with
+ */
+ reportCollisionVsBody: function (px, py, dx, dy, obj) {
+
+ var vx1 = this.pos.x - this.oldpos.x; // Calc velocity of this object
+ var vy1 = this.pos.y - this.oldpos.y;
+ var dp1 = (vx1 * dx + vy1 * dy); // Find component of velocity parallel to collision normal
+ var nx1 = dp1 * dx; // Project velocity onto collision normal
+ var ny1 = dp1 * dy; // nx, ny is normal velocity
+
+ var dx2 = dx * -1;
+ var dy2 = dy * -1;
+ var vx2 = obj.pos.x - obj.oldpos.x; // Calc velocity of colliding object
+ var vy2 = obj.pos.y - obj.oldpos.y;
+ var dp2 = (vx2 * dx2 + vy2 * dy2); // Find component of velocity parallel to collision normal
+ var nx2 = dp2 * dx2; // Project velocity onto collision normal
+ var ny2 = dp2 * dy2; // nx, ny is normal velocity
+
+ // We only want to apply collision response forces if the object is travelling into, and not out of, the collision
+ if (this.body.immovable && obj.body.immovable)
+ {
+ // Split the separation then return, no forces applied as they come to a stand-still
+ px *= 0.5;
+ py *= 0.5;
+
+ this.pos.add(px, py);
+ this.oldpos.set(this.pos.x, this.pos.y);
+
+ obj.pos.subtract(px, py);
+ obj.oldpos.set(obj.pos.x, obj.pos.y);
+
+ return;
+ }
+ else if (!this.body.immovable && !obj.body.immovable)
+ {
+ // separate
+ px *= 0.5;
+ py *= 0.5;
+
+ this.pos.add(px, py);
+ obj.pos.subtract(px, py);
+
+ if (dp1 < 0)
+ {
+ this.reverse();
+ obj.reverse();
+ }
+ }
+ else if (!this.body.immovable)
+ {
+ this.pos.subtract(px, py);
+
+ if (dp1 < 0)
+ {
+ this.reverse();
+ }
+ }
+ else if (!obj.body.immovable)
+ {
+ obj.pos.subtract(px, py);
+
+ if (dp1 < 0)
+ {
+ obj.reverse();
+ }
+ }
+
+ },
+
+ /**
+ * Collides this AABB against the world bounds.
+ *
+ * @method Phaser.Physics.Ninja.AABB#collideWorldBounds
+ */
+ collideWorldBounds: function () {
+
+ var dx = this.system.bounds.x - (this.pos.x - this.xw);
+
+ if (0 < dx)
+ {
+ this.reportCollisionVsWorld(dx, 0, 1, 0, null);
+ }
+ else
+ {
+ dx = (this.pos.x + this.xw) - this.system.bounds.width;
+
+ if (0 < dx)
+ {
+ this.reportCollisionVsWorld(-dx, 0, -1, 0, null);
+ }
+ }
+
+ var dy = this.system.bounds.y - (this.pos.y - this.yw);
+
+ if (0 < dy)
+ {
+ this.reportCollisionVsWorld(0, dy, 0, 1, null);
+ }
+ else
+ {
+ dy = (this.pos.y + this.yw) - this.system.bounds.height;
+
+ if (0 < dy)
+ {
+ this.reportCollisionVsWorld(0, -dy, 0, -1, null);
+ }
+ }
+
+ },
+
+ /**
+ * Collides this AABB against a AABB.
+ *
+ * @method Phaser.Physics.Ninja.AABB#collideAABBVsAABB
+ * @param {Phaser.Physics.Ninja.AABB} aabb - The AABB to collide against.
+ */
+ collideAABBVsAABB: function (aabb) {
+
+ var pos = this.pos;
+ var c = aabb;
+
+ 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 + this.xw) - Math.abs(dx);//penetration depth in x
+
+ if (0 < px)
+ {
+ var dy = pos.y - ty;//tile->obj delta
+ var py = (tyw + this.yw) - Math.abs(dy);//pen depth in y
+
+ if (0 < py)
+ {
+ //object may be colliding with tile; call tile-specific collision function
+
+ //calculate projection vectors
+ if (px < py)
+ {
+ //project in x
+ if (dx < 0)
+ {
+ //project to the left
+ px *= -1;
+ py = 0;
+ }
+ else
+ {
+ //proj to right
+ py = 0;
+ }
+ }
+ else
+ {
+ //project in y
+ if (dy < 0)
+ {
+ //project up
+ px = 0;
+ py *= -1;
+ }
+ else
+ {
+ //project down
+ px = 0;
+ }
+ }
+
+ var l = Math.sqrt(px * px + py * py);
+ this.reportCollisionVsBody(px, py, px / l, py / l, c);
+
+ return Phaser.Physics.Ninja.AABB.COL_AXIS;
+
+ }
+ }
+
+ return false;
+
+ },
+
+ /**
+ * Collides this AABB against a Tile.
+ *
+ * @method Phaser.Physics.Ninja.AABB#collideAABBVsTile
+ * @param {Phaser.Physics.Ninja.Tile} tile - The Tile to collide against.
+ */
+ collideAABBVsTile: function (tile) {
+
+ var dx = this.pos.x - tile.pos.x; // tile->obj delta
+ var px = (tile.xw + this.xw) - Math.abs(dx); // penetration depth in x
+
+ if (0 < px)
+ {
+ var dy = this.pos.y - tile.pos.y; // tile->obj delta
+ var py = (tile.yw + this.yw) - Math.abs(dy); // pen depth in y
+
+ if (0 < py)
+ {
+ // Calculate projection vectors
+ if (px < py)
+ {
+ // Project in x
+ if (dx < 0)
+ {
+ // Project to the left
+ px *= -1;
+ py = 0;
+ }
+ else
+ {
+ // Project to the right
+ py = 0;
+ }
+ }
+ else
+ {
+ // Project in y
+ if (dy < 0)
+ {
+ // Project up
+ px = 0;
+ py *= -1;
+ }
+ else
+ {
+ // Project down
+ px = 0;
+ }
+ }
+
+ // Object may be colliding with tile; call tile-specific collision function
+ return this.resolveTile(px, py, this, tile);
+ }
+ }
+
+ return false;
+
+ },
+
+ /**
+ * Resolves tile collision.
+ *
+ * @method Phaser.Physics.Ninja.AABB#resolveTile
+ * @param {number} x - Penetration depth on the x axis.
+ * @param {number} y - Penetration depth on the y axis.
+ * @param {Phaser.Physics.Ninja.AABB} body - The AABB involved in the collision.
+ * @param {Phaser.Physics.Ninja.Tile} tile - The Tile involved in the collision.
+ * @return {boolean} True if the collision was processed, otherwise false.
+ */
+ resolveTile: function (x, y, body, tile) {
+
+ if (0 < tile.id)
+ {
+ return this.aabbTileProjections[tile.type](x, y, body, tile);
+ }
+ else
+ {
+ // console.warn("Ninja.AABB.resolveTile was called with an empty (or unknown) tile!: id=" + tile.id + ")");
+ return false;
+ }
+
+ },
+
+ /**
+ * Resolves Full tile collision.
+ *
+ * @method Phaser.Physics.Ninja.AABB#projAABB_Full
+ * @param {number} x - Penetration depth on the x axis.
+ * @param {number} y - Penetration depth on the y axis.
+ * @param {Phaser.Physics.Ninja.AABB} obj - The AABB involved in the collision.
+ * @param {Phaser.Physics.Ninja.Tile} t - The Tile involved in the collision.
+ * @return {number} The result of the collision.
+ */
+ projAABB_Full: function (x, y, obj, t) {
+
+ var l = Math.sqrt(x * x + y * y);
+ obj.reportCollisionVsWorld(x, y, x / l, y / l, t);
+
+ return Phaser.Physics.Ninja.AABB.COL_AXIS;
+
+ },
+
+ /**
+ * Resolves Half tile collision.
+ *
+ * @method Phaser.Physics.Ninja.AABB#projAABB_Half
+ * @param {number} x - Penetration depth on the x axis.
+ * @param {number} y - Penetration depth on the y axis.
+ * @param {Phaser.Physics.Ninja.AABB} obj - The AABB involved in the collision.
+ * @param {Phaser.Physics.Ninja.Tile} t - The Tile involved in the collision.
+ * @return {number} The result of the collision.
+ */
+ projAABB_Half: function (x, y, obj, t) {
+
+ //signx or signy must be 0; the other must be -1 or 1
+ //calculate the projection vector for the half-edge, and then
+ //(if collision is occuring) pick the minimum
+
+ var sx = t.signx;
+ var sy = t.signy;
+
+ var ox = (obj.pos.x - (sx*obj.xw)) - t.pos.x;//this gives is the coordinates of the innermost
+ var oy = (obj.pos.y - (sy*obj.yw)) - t.pos.y;//point on the AABB, relative to the tile center
+
+ //we perform operations analogous to the 45deg tile, except we're using
+ //an axis-aligned slope instead of an angled one..
+
+ //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;//(sx,sy) is now the projection vector
+ sy *= -dp;
+
+ var lenN = Math.sqrt(sx*sx + sy*sy);
+ var lenP = Math.sqrt(x*x + y*y);
+
+ if (lenP < lenN)
+ {
+ //project along axis; note that we're assuming that this tile is horizontal OR vertical
+ //relative to the AABB's current tile, and not diagonal OR the current tile.
+ obj.reportCollisionVsWorld(x,y,x/lenP, y/lenP, t);
+
+ return Phaser.Physics.Ninja.AABB.COL_AXIS;
+ }
+ else
+ {
+ //note that we could use -= instead of -dp
+ obj.reportCollisionVsWorld(sx,sy,t.signx, t.signy, t);
+
+ return Phaser.Physics.Ninja.AABB.COL_OTHER;
+ }
+ }
+
+ return Phaser.Physics.Ninja.AABB.COL_NONE;
+
+ },
+
+ /**
+ * Resolves 45 Degree tile collision.
+ *
+ * @method Phaser.Physics.Ninja.AABB#projAABB_45Deg
+ * @param {number} x - Penetration depth on the x axis.
+ * @param {number} y - Penetration depth on the y axis.
+ * @param {Phaser.Physics.Ninja.AABB} obj - The AABB involved in the collision.
+ * @param {Phaser.Physics.Ninja.Tile} t - The Tile involved in the collision.
+ * @return {number} The result of the collision.
+ */
+ projAABB_45Deg: function (x, y, obj, t) {
+
+ var signx = t.signx;
+ var signy = t.signy;
+
+ var ox = (obj.pos.x - (signx*obj.xw)) - t.pos.x;//this gives is the coordinates of the innermost
+ var oy = (obj.pos.y - (signy*obj.yw)) - t.pos.y;//point on the AABB, relative to the tile center
+
+ 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;//(sx,sy) is now the projection vector
+ sy *= -dp;
+
+ var lenN = Math.sqrt(sx*sx + sy*sy);
+ var lenP = Math.sqrt(x*x + y*y);
+
+ if (lenP < lenN)
+ {
+ //project along axis
+ obj.reportCollisionVsWorld(x,y,x/lenP, y/lenP, t);
+
+ return Phaser.Physics.Ninja.AABB.COL_AXIS;
+ }
+ else
+ {
+ //project along slope
+ obj.reportCollisionVsWorld(sx,sy,t.sx,t.sy);
+
+ return Phaser.Physics.Ninja.AABB.COL_OTHER;
+ }
+ }
+
+ return Phaser.Physics.Ninja.AABB.COL_NONE;
+ },
+
+ /**
+ * Resolves 22 Degree tile collision.
+ *
+ * @method Phaser.Physics.Ninja.AABB#projAABB_22DegS
+ * @param {number} x - Penetration depth on the x axis.
+ * @param {number} y - Penetration depth on the y axis.
+ * @param {Phaser.Physics.Ninja.AABB} obj - The AABB involved in the collision.
+ * @param {Phaser.Physics.Ninja.Tile} t - The Tile involved in the collision.
+ * @return {number} The result of the collision.
+ */
+ projAABB_22DegS: function (x, y, obj, t) {
+
+ var signx = t.signx;
+ var signy = t.signy;
+
+ //first we need to check to make sure we're colliding with the slope at all
+ var py = obj.pos.y - (signy*obj.yw);
+ var penY = t.pos.y - py;//this is the vector from the innermost point on the box to the highest point on
+ //the tile; if it is positive, this means the box is above the tile and
+ //no collision is occuring
+ if (0 < (penY*signy))
+ {
+ var ox = (obj.pos.x - (signx*obj.xw)) - (t.pos.x + (signx*t.xw));//this gives is the coordinates of the innermost
+ var oy = (obj.pos.y - (signy*obj.yw)) - (t.pos.y - (signy*t.yw));//point on the AABB, relative to a point on the slope
+
+ var sx = t.sx;//get slope unit normal
+ 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;//(sx,sy) is now the projection vector
+ sy *= -dp;
+
+ var lenN = Math.sqrt(sx*sx + sy*sy);
+ var lenP = Math.sqrt(x*x + y*y);
+
+ var aY = Math.abs(penY);
+
+ if (lenP < lenN)
+ {
+ if (aY < lenP)
+ {
+ obj.reportCollisionVsWorld(0, penY, 0, penY/aY, t);
+
+ return Phaser.Physics.Ninja.AABB.COL_OTHER;
+ }
+ else
+ {
+ obj.reportCollisionVsWorld(x,y,x/lenP, y/lenP, t);
+
+ return Phaser.Physics.Ninja.AABB.COL_AXIS;
+ }
+ }
+ else
+ {
+ if (aY < lenN)
+ {
+ obj.reportCollisionVsWorld(0, penY, 0, penY/aY, t);
+
+ return Phaser.Physics.Ninja.AABB.COL_OTHER;
+ }
+ else
+ {
+ obj.reportCollisionVsWorld(sx,sy,t.sx,t.sy,t);
+
+ return Phaser.Physics.Ninja.AABB.COL_OTHER;
+ }
+ }
+ }
+ }
+
+ //if we've reached this point, no collision has occured
+ return Phaser.Physics.Ninja.AABB.COL_NONE;
+ },
+
+ /**
+ * Resolves 22 Degree tile collision.
+ *
+ * @method Phaser.Physics.Ninja.AABB#projAABB_22DegB
+ * @param {number} x - Penetration depth on the x axis.
+ * @param {number} y - Penetration depth on the y axis.
+ * @param {Phaser.Physics.Ninja.AABB} obj - The AABB involved in the collision.
+ * @param {Phaser.Physics.Ninja.Tile} t - The Tile involved in the collision.
+ * @return {number} The result of the collision.
+ */
+ projAABB_22DegB: 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));//this gives is the coordinates of the innermost
+ var oy = (obj.pos.y - (signy*obj.yw)) - (t.pos.y + (signy*t.yw));//point on the AABB, relative to a point on the slope
+
+ var sx = t.sx;//get slope unit normal
+ 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;//(sx,sy) is now the projection vector
+ 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.Ninja.AABB.COL_AXIS;
+ }
+ else
+ {
+ obj.reportCollisionVsWorld(sx,sy,t.sx,t.sy,t);
+
+ return Phaser.Physics.Ninja.AABB.COL_OTHER;
+ }
+
+ }
+
+ return Phaser.Physics.Ninja.AABB.COL_NONE;
+
+ },
+
+ /**
+ * Resolves 67 Degree tile collision.
+ *
+ * @method Phaser.Physics.Ninja.AABB#projAABB_67DegS
+ * @param {number} x - Penetration depth on the x axis.
+ * @param {number} y - Penetration depth on the y axis.
+ * @param {Phaser.Physics.Ninja.AABB} obj - The AABB involved in the collision.
+ * @param {Phaser.Physics.Ninja.Tile} t - The Tile involved in the collision.
+ * @return {number} The result of the collision.
+ */
+ projAABB_67DegS: 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));//this gives is the coordinates of the innermost
+ var oy = (obj.pos.y - (signy*obj.yw)) - (t.pos.y + (signy*t.yw));//point on the AABB, relative to a point on the slope
+
+ var sx = t.sx;//get slope unit normal
+ 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;//(sx,sy) is now the projection vector
+ 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.Ninja.AABB.COL_OTHER;
+ }
+ else
+ {
+ obj.reportCollisionVsWorld(x,y,x/lenP, y/lenP, t);
+
+ return Phaser.Physics.Ninja.AABB.COL_AXIS;
+ }
+ }
+ else
+ {
+ if (aX < lenN)
+ {
+ obj.reportCollisionVsWorld(penX, 0, penX/aX, 0, t);
+
+ return Phaser.Physics.Ninja.AABB.COL_OTHER;
+ }
+ else
+ {
+ obj.reportCollisionVsWorld(sx,sy,t.sx,t.sy,t);
+
+ return Phaser.Physics.Ninja.AABB.COL_OTHER;
+ }
+ }
+ }
+ }
+
+ //if we've reached this point, no collision has occured
+ return Phaser.Physics.Ninja.AABB.COL_NONE;
+
+ },
+
+ /**
+ * Resolves 67 Degree tile collision.
+ *
+ * @method Phaser.Physics.Ninja.AABB#projAABB_67DegB
+ * @param {number} x - Penetration depth on the x axis.
+ * @param {number} y - Penetration depth on the y axis.
+ * @param {Phaser.Physics.Ninja.AABB} obj - The AABB involved in the collision.
+ * @param {Phaser.Physics.Ninja.Tile} t - The Tile involved in the collision.
+ * @return {number} The result of the collision.
+ */
+ projAABB_67DegB: 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));//this gives is the coordinates of the innermost
+ var oy = (obj.pos.y - (signy*obj.yw)) - (t.pos.y - (signy*t.yw));//point on the AABB, relative to a point on the slope
+
+ var sx = t.sx;//get slope unit normal
+ 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;//(sx,sy) is now the projection vector
+ 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.Ninja.AABB.COL_AXIS;
+ }
+ else
+ {
+ obj.reportCollisionVsWorld(sx,sy,t.sx,t.sy,t);
+
+ return Phaser.Physics.Ninja.AABB.COL_OTHER;
+ }
+ }
+
+ return Phaser.Physics.Ninja.AABB.COL_NONE;
+ },
+
+ /**
+ * Resolves Convex tile collision.
+ *
+ * @method Phaser.Physics.Ninja.AABB#projAABB_Convex
+ * @param {number} x - Penetration depth on the x axis.
+ * @param {number} y - Penetration depth on the y axis.
+ * @param {Phaser.Physics.Ninja.AABB} obj - The AABB involved in the collision.
+ * @param {Phaser.Physics.Ninja.Tile} t - The Tile involved in the collision.
+ * @return {number} The result of the collision.
+ */
+ projAABB_Convex: function (x, y, obj, t) {
+
+ //if distance from "innermost" corner of AABB is less than than tile radius,
+ //collision is occuring and we need to project
+
+ var signx = t.signx;
+ var signy = t.signy;
+
+ var ox = (obj.pos.x - (signx * obj.xw)) - (t.pos.x - (signx * t.xw));//(ox,oy) is the vector from the circle center to
+ var oy = (obj.pos.y - (signy * obj.yw)) - (t.pos.y - (signy * t.yw));//the AABB
+ var len = Math.sqrt(ox * ox + oy * oy);
+
+ var twid = t.xw * 2;
+ var rad = 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 pen = rad - len;
+
+ if (((signx * ox) < 0) || ((signy * oy) < 0))
+ {
+ //the test corner is "outside" the 1/4 of the circle we're interested in
+ var lenP = Math.sqrt(x * x + y * y);
+ obj.reportCollisionVsWorld(x, y, x / lenP, y / lenP, t);
+
+ return Phaser.Physics.Ninja.AABB.COL_AXIS;//we need to report
+ }
+ else if (0 < pen)
+ {
+ //project along corner->circle vector
+ ox /= len;
+ oy /= len;
+ obj.reportCollisionVsWorld(ox * pen, oy * pen, ox, oy, t);
+
+ return Phaser.Physics.Ninja.AABB.COL_OTHER;
+ }
+
+ return Phaser.Physics.Ninja.AABB.COL_NONE;
+
+ },
+
+ /**
+ * Resolves Concave tile collision.
+ *
+ * @method Phaser.Physics.Ninja.AABB#projAABB_Concave
+ * @param {number} x - Penetration depth on the x axis.
+ * @param {number} y - Penetration depth on the y axis.
+ * @param {Phaser.Physics.Ninja.AABB} obj - The AABB involved in the collision.
+ * @param {Phaser.Physics.Ninja.Tile} t - The Tile involved in the collision.
+ * @return {number} The result of the collision.
+ */
+ projAABB_Concave: function (x, y, obj, t) {
+
+ //if distance from "innermost" corner of AABB is further than tile radius,
+ //collision is occuring and we need to project
+
+ var signx = t.signx;
+ var signy = t.signy;
+
+ var ox = (t.pos.x + (signx * t.xw)) - (obj.pos.x - (signx * obj.xw));//(ox,oy) is the vector form the innermost AABB corner to the
+ var oy = (t.pos.y + (signy * t.yw)) - (obj.pos.y - (signy * obj.yw));//circle's center
+
+ var twid = t.xw * 2;
+ var rad = 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 - rad;
+
+ if (0 < pen)
+ {
+ //collision; we need to either project along the axes, or project along corner->circlecenter vector
+
+ var lenP = Math.sqrt(x * x + y * y);
+
+ if (lenP < pen)
+ {
+ //it's shorter to move along axis directions
+ obj.reportCollisionVsWorld(x, y, x / lenP, y / lenP, t);
+
+ return Phaser.Physics.Ninja.AABB.COL_AXIS;
+ }
+ else
+ {
+ //project along corner->circle vector
+ ox /= len;//len should never be 0, since if it IS 0, rad should be > than len
+ oy /= len;//and we should never reach here
+
+ obj.reportCollisionVsWorld(ox * pen, oy * pen, ox, oy, t);
+
+ return Phaser.Physics.Ninja.AABB.COL_OTHER;
+ }
+
+ }
+
+ return Phaser.Physics.Ninja.AABB.COL_NONE;
+
+ }
+
+}
+
+
+