在移动设备上滑动时，如何像Input.GetAxis（“ Horizo​​ntal”）一样获得-1到1之间的值

Question

我是Unity的新手，我试图制作一个超级六边形游戏副本，但我对Input统一感到困惑。我为键盘使用了Input.GetAxis（“ Horizo​​ntal”），它确实返回了一个值，我只是使用它使用transform.RotateAround（）围绕中间对象围绕播放器对象旋转。但是，当我尝试在移动设备上获取它时，我编写了一个脚本来确定它是SWIPE LEFT还是SWIPE RIGHT。那行得通。但是我不知道如何基于从-1到1的滑动返回值。这样我就可以使用这些值，有人可以帮忙。我也在这里添加我的脚本

public class Player : MonoBehaviour {


    public GameManager gameManager;

    public SwipeController swipe;

    public float moveSpeed = 600f;

    float movement = 0f;

    // Update is called once per frame
    void Update()
    {
        this.movement = Input.GetAxisRaw("Horizontal");
    }

    private void FixedUpdate()
    {
        transform.RotateAround(Vector3.zero, Vector3.forward, this.movement * Time.fixedDeltaTime * -moveSpeed);
    }
}

这里也是我的滑动脚本

public class SwipeController : MonoBehaviour
{
private bool tap, swipeLeft, swipeRight, swipeUp, swipeDown;
private bool isDragging;
private Vector2 startTouch, swipeDelta;

private void Update()
{
    tap = swipeLeft = swipeRight = swipeUp = swipeDown = false;

    //stand Alone Inputs

    if (Input.GetMouseButtonDown(0))
    {
        isDragging = true;
        tap = true;
        startTouch = Input.mousePosition;
    } else if (Input.GetMouseButtonUp(0)) {
        isDragging = false;
        Reset();
    }


    //MOBILE INPUTS

    if (Input.touches.Length > 0 )
    {
        if(Input.touches[0].phase == TouchPhase.Began)
        {
            tap = true;
            isDragging = true;
            startTouch = Input.touches[0].position;
        } else if (Input.touches[0].phase == TouchPhase.Ended || Input.touches[0].phase == TouchPhase.Canceled)
        {
            isDragging = false;
            Reset();
        }
    }

    //Distance calcs

    if (isDragging)
    {
        if(Input.touches.Length > 0)
        {
            swipeDelta = Input.touches[0].position - startTouch;
        } else if (Input.GetMouseButton(0)) {
            swipeDelta = (Vector2)Input.mousePosition - startTouch;
        }

        //DEAD ZONE?

    if (swipeDelta.magnitude > 100)
        {
            float x = swipeDelta.x;
            float y = swipeDelta.y;

            if (Mathf.Abs(x) > Mathf.Abs(y))
            {
                //left or right
                if (x < 0)
                {
                    swipeLeft = true;
                } else
                {
                    swipeRight = true;
                }
            } else
            {
                // top or bottom
                if (y < 0 )
                {
                    swipeDown = true;
                } else
                {
                    swipeUp = true;
                }
            }

            Reset();
        }
    }
}

private void Reset()
{
    startTouch = swipeDelta = Vector2.zero;
}

public Vector2 SwipeDelta { get { return swipeDelta; } }
public bool SwipeLeft { get { return swipeLeft; } }
public bool SwipeRight { get { return swipeRight; } }
public bool SwipeUp { get { return swipeUp; } }
public bool SwipeDown { get { return swipeDown; } }

}

Answer 1

您可以使用类似这样的内容：

private float RemapFloat(float input, Vector2 refRange, Vector2 targetRange)
{
   // map the input relative to the reference space
   float normal = Mathf.InverseLerp(refRange.x, refRange.y, input);
   // map the result to the target reference space
   float outputValue = Mathf.Lerp(targetRange.x, targetRange.y, normal);
   return outputValue;
}

这利用了：

• InverseLerp：https://docs.unity3d.com/ScriptReference/Mathf.InverseLerp.html
• Lerp：https://docs.unity3d.com/ScriptReference/Mathf.Lerp.html

然后，您可以这样命名，假设您要使用的“滑动值”是滑动距离：

// the mininum and maximum swipe distance range, could be based on your viewport size
Vector2 swipeValueRange = new Vector2(-swipeDistanceRange, swipeDistanceRange); 
// this is the range of values you wish to use
Vector2 targetRange = new Vector2(-1f, 1f); 
// the swipe value you wish to remap
float swipeValue = currentSwipeValue;

RemapFloat(swipeValue, swipeValueRange, targetRange);

Answer 2

您可以使用Mathf.MoveTowards模拟从-1到1的值

伪代码：

float t;

if(SWIPE LEFT)
{
    t = Mathf.MoveTowards(t, -1, STEP);
}
else if(SWIPE RIGHT)
{
    t = Mathf.MoveTowards(t, 1, STEP);
}
else
{
    t = Mathf.MoveTowards(t, 0, STEP);
}