private GRect drawHead(double x, double y){
		
		x = x - (HEAD_WIDTH/2);
		y = y - (HEAD_HEIGHT/2);
		
		GRect head = new GRect(x, y, HEAD_WIDTH, HEAD_HEIGHT);
		head.setColor(Color.BLACK);
		head.setFilled(true);
		head.setFillColor(Color.GRAY);
		
		return head;
	}