private Point getRandomLocationOnGrid(int offset) {
		Random random = new Random();
		int xLimit = SIZE.width;
		int yLimit = SIZE.height;
		int x = random.nextInt((int) xLimit/GameModel.getUnit()) * GameModel.getUnit();
		int y = (random.nextInt((int) yLimit/GameModel.getUnit()) * GameModel.getUnit()) + offset;
		return new Point(x, y);
	}