触摸输入系统无法在我的项目上运行

问：

您好，我正在尝试在我的安卓手机上制作自己的俄罗斯方块游戏。我正在努力做，

1-触摸和释放屏幕旋转，

2- 向下、向左和向右滑动和滑动，不进行任何旋转。

这是我的代码，任何建议都会很棒，非常感谢！

private Vector2 touchStartPos;
private bool isRotating = false;
private float swipeThreshold = 75.0f;

private void Update()
{
    this.board.Clear(this);

    this.lockTime += Time.deltaTime;

    if (Input.touchCount > 0)
    {
        Touch touch = Input.GetTouch(0);

        if (touch.phase == TouchPhase.Began)
        {
            touchStartPos = touch.position;
            isRotating = false;
        }
        else if (touch.phase == TouchPhase.Moved)
        {
            if (!isRotating)
            {
                float swipeDistance = touch.position.x - touchStartPos.x;
                float verticalDistance = touch.position.y - touchStartPos.y;

                if (Mathf.Abs(swipeDistance) > Mathf.Abs(verticalDistance))
                {
                    if (Mathf.Abs(swipeDistance) > swipeThreshold)
                    {
                        if (swipeDistance > 0)
                        {
                            Debug.Log("Movement for right.");
                            Move(Vector2Int.right);
                        }
                        else
                        {
                            Debug.Log("Movement for left.");
                            Move(Vector2Int.left);
                        }
                    }
                }
                else if (verticalDistance < -swipeThreshold)
                {
                    Debug.Log("Movement for down.");
                    Move(Vector2Int.down);                      
                }
            }
        }
        else if (touch.phase == TouchPhase.Ended)
        {
            if (!isRotating)
            {
                isRotating = true;
                Debug.Log("Touch detected, processing.");
               
                Rotate(1);
            }
        }
    }
}

我在互联网上尝试了很多解决方案，但找不到解决方案。