Merge pull request phaserjs#1107 from gamedolphin/test

Fixed Point.rotate bug . Also added a little documentation for world wrap.

Author: alvinsight

src/core/World.js

@@ -107,6 +107,7 @@ Phaser.World.prototype.shutdown = function () {
 /**
 * This will take the given game object and check if its x/y coordinates fall outside of the world bounds.
 * If they do it will reposition the object to the opposite side of the world, creating a wrap-around effect.
+* If sprite has a P2 body then the body (sprite.body) should be passed as first parameter to the function.
 *
 * @method Phaser.World#wrap
 * @param {Phaser.Sprite|Phaser.Image|Phaser.TileSprite|Phaser.Text} sprite - The object you wish to wrap around the world bounds.

src/geom/Point.js

@@ -823,7 +823,9 @@ Phaser.Point.rotate = function (a, x, y, angle, asDegrees, distance) {
         distance = Math.sqrt(((x - a.x) * (x - a.x)) + ((y - a.y) * (y - a.y)));
     }
 
-    return a.setTo(x + distance * Math.cos(angle), y + distance * Math.sin(angle));
+    var requiredAngle = angle + Math.atan2(a.y - y, a.x - x);
+
+    return a.setTo(x + distance * Math.cos(requiredAngle), y + distance * Math.sin(requiredAngle));
 
 };