public void move(Direction dir) {
		tail.add(0, new Position(head.x, head.y));
		tail.remove(tail.size() - 1);
		switch (dir) {
		case NORTH:
			head.y--;
			break;
		case SOUTH:
			head.y++;
			break;
		case EAST:
			head.x--;
			break;
		case WEST:
			head.x++;
			break;
		default:
			break;
		}
		// Collision met randen van het scherm
		if (head.x < 0 || head.x >= Snake.gridResolutie || head.y < 0 || head.y >= Snake.gridResolutie) {
			System.out.println("Game over! Score: " + score);
			setColor(1.0f, 0.0f, 0.0f);
			Snake.kill();
		}
	}