Removed the test on `isEntity` since the `collidable` property is actually only defined in Entity Object
Removed the test on `isEntity` since the `collidable` property is actually only defined in Entity Object

TukekeSoft/melonJS,TukekeSoft/melonJS,gopalindians/melonJS,rlugojr/melonJS,melonjs/melonJS,gopalindians/melonJS,srbala/melonJS,Smoss/Enoru-eco,MarkoIvanetic/melonJS,rlugojr/melonJS,Smoss/Enoru-eco,rlugojr/melonJS,MarkoIvanetic/melonJS,srbala/melonJS,melonjs/melonJS,TukekeSoft/melonJS,srbala/melonJS,gopalindians/melonJS