public boolean collide(int x, int y, Object obj){
		
		if (obj instanceof TileType){
			TileType type = World.getTheTileTypeAt(x,y,(TileType) obj);
			if (type!=null){
				return true;
			}
		}else{
			if (World.getOneActorAt(x,y,obj)!=null){
				return true;
			}
		}
		
		return false;
}

public boolean collide(int x, int y, Object obj) {
    return (obj instanceof TileType && World.getTheTileTypeAt(x, y, (TileType)obj) != null) || (!(obj instanceof TileType) && World.getOneActorAt(x, y, obj) != null);
}