The physics world is now cleared on state swap (fixes #505)

src/core/StateManager.js

@@ -286,6 +286,11 @@ Phaser.StateManager.prototype = {
 
                 this.game.world.destroy();
 
+                if (this.game.physics)
+                {
+                    this.game.physics.clear();
+                }
+
                 if (this._clearCache === true)
                 {
                     this.game.cache.destroy();

src/physics/World.js

@@ -455,6 +455,19 @@ Phaser.Physics.World.prototype = {
     },
 
     /**
+    * Clears all bodies from the simulation.
+    *
+    * @method Phaser.Physics.World#clear
+    */
+    clear: function () {
+
+        this.world.clear();
+
+    },
+
+    /**
+    * Clears all bodies from the simulation and unlinks World from Game. Should only be called on game shutdown. Call `clear` on a State change.
+    *
     * @method Phaser.Physics.World#destroy
     */
     destroy: function () {