public void setLocation(int x, int y)   {
        List l = getWorld().getObjectsAt(x, y, null);
		for (int i = 0; i < l.size(); i++) {
			Actor actor = (Actor) l.get(i);
			if (actor != this) {getWorld().removeObject(actor);}
		}
		super.setLocation(x,y);
    }