Question

我在编辑器中正在使用一个脚本来旋转精灵，我想翻译此脚本以使用“触摸输入”而不是鼠标。

我使用以下脚本根据鼠标拖动来旋转游戏中的精灵。我真的没有触摸输入的经验，所以我尝试过的东西是我在其他一些使用触摸输入的代码中看到的。基本上，我更改了if语句：来自

if (Input.GetMouseButtonDown(0))
        {
            deltaRotation = 0f;
            previousRotation = angleBetweenPoints(transform.position, Camera.main.ScreenToWorldPoint(Input.mousePosition));
        }

收件人：

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

            if (touch.phase == TouchPhase.Moved)
            {
                deltaRotation = 0f;
                previousRotation = angleBetweenPoints(transform.position, Camera.main.ScreenToWorldPoint(Input.mousePosition));
            }
        }

这是我现在的代码，我正在用它来用鼠标旋转精灵：

void Update()
    {
        if (Input.GetMouseButtonDown(0))
        {
            deltaRotation = 0f;
            previousRotation = angleBetweenPoints(transform.position, Camera.main.ScreenToWorldPoint(Input.mousePosition));
        }
        else if (Input.GetMouseButton(0))
        {
            currentRotation = angleBetweenPoints(transform.position, Camera.main.ScreenToWorldPoint(Input.mousePosition));
            deltaRotation = Mathf.DeltaAngle(currentRotation, previousRotation);
            if (Mathf.Abs(deltaRotation) > deltaLimit)
            {
                deltaRotation = deltaLimit * Mathf.Sign(deltaRotation);
            }
            previousRotation = currentRotation;
            transform.Rotate(Vector3.back * Time.deltaTime, deltaRotation);
        }
        else
        {
            transform.Rotate(Vector3.back * Time.deltaTime, deltaRotation);
            deltaRotation = Mathf.Lerp(deltaRotation, 0, deltaReduce * Time.deltaTime);
        }

    }

Answer 1

您的if/else语句使用的等效条件不仅仅是TouchPhase.Moved。

看起来像以下的TouchPhases一样。

TouchPhase.Began代替Input.GetMouseButtonDown(0)

TouchPhase.Moved代替Input.GetMouseButton(0)

TouchPhase.Ended代替最后的else

PS：在UnityAnswers上给出相同的答案

所以，它看起来可能像这样：

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

        if (touch.phase == TouchPhase.Began)
        {
            deltaRotation = 0f;
            previousRotation = angleBetweenPoints(transform.position, Camera.main.ScreenToWorldPoint(Input.mousePosition));
        }
        else if (touch.phase == TouchPhase.Moved)
        {
            currentRotation = angleBetweenPoints(transform.position, Camera.main.ScreenToWorldPoint(Input.mousePosition));
            deltaRotation = Mathf.DeltaAngle(currentRotation, previousRotation);
            if (Mathf.Abs(deltaRotation) > deltaLimit)
            {
                deltaRotation = deltaLimit * Mathf.Sign(deltaRotation);
            }
            previousRotation = currentRotation;
            transform.Rotate(Vector3.back * Time.deltaTime, deltaRotation);
        }
        else if (touch.phase == TouchPhase.Ended)
        {
            transform.Rotate(Vector3.back * Time.deltaTime, deltaRotation);
            deltaRotation = Mathf.Lerp(deltaRotation, 0, deltaReduce * Time.deltaTime);
        }
    }
}

如何基于鼠标拖动来翻译旋转脚本以使用触摸输入？

1 个答案: