private Point getRandomLocationOnGrid(int offset) {
		Random random = new Random();
		Dimension screen = Toolkit.getDefaultToolkit().getScreenSize(); i();
		int xLimit = screen.width - 100;
		int yLimit = GameModel.BOTTOM;
		int x = random.nextInt((int) xLimit/GameModel.UNIT) * GameModel.UNIT;
		int y = (random.nextInt((int) yLimit/GameModel.UNIT) * GameModel.UNIT) + offset;
		return new Point(x, y);
	}