如何固定左右移动？

Question

我花了很多时间试图查找代码中的问题，但找不到导致我的代码未触发的解决方案。 在我以前的游戏中，当我实现此代码时，它可以完美地工作；现在，当我在新游戏中实现相同的触摸运动代码时，它不起作用。

我尝试调试代码并将Debug.Log放入Update方法中，当我在屏幕上滑动时，它甚至都没有触发。

这是代码：

int left = 0;
int right = 0;
int maxLeftCycles = 5;
int maxRightCycles = 5;

void Start()
{
    //touch
    left = maxLeftCycles;
    right = maxRightCycles;
}

private void Update()
{
    timer += Time.deltaTime;

    if (Input.GetKeyUp(KeyCode.RightArrow) ||
        Swipe.swipe == Swipe.SwipeDirection.right)
    {
        Swipe.ResetSwipe();
        right = 0;
    }

    if (Input.GetKeyUp(KeyCode.LeftArrow) ||
        Swipe.swipe == Swipe.SwipeDirection.left)
    {
        Swipe.ResetSwipe();
        left = 0;
    }
}

void FixedUpdate()
{
    if (left < maxLeftCycles && !isMoving)
    {
        desiredPos = transform.position + Vector3.left * 1.52f;
        isMoving = true;

        left++;
    }

    if (right < maxRightCycles && !isMoving)
    {
        desiredPos = transform.position - Vector3.right * 1.52f;
        isMoving = true;

        right++;
    }

    if (isMoving)
    {
        transform.position = Vector3.MoveTowards(transform.position, desiredPos, moveSpeed * Time.deltaTime);

        // this == is true if the difference between both
        // vectors is smaller than 0.00001
        if (transform.position == desiredPos)
        {
            isMoving = false;

            transform.position = desiredPos;
        }
    }
} 

我在此代码中以及在vector3.right和left中放置了Debug.Log，但从未触发过它。

if (Input.GetKeyUp(KeyCode.RightArrow) ||
    Swipe.swipe == Swipe.SwipeDirection.right)
{
    Debug.Log("This is traacked");

    Swipe.ResetSwipe();
    right = 0;
}

if (Input.GetKeyUp(KeyCode.LeftArrow) ||
    Swipe.swipe == Swipe.SwipeDirection.left)
{
    Debug.Log("This is traacked");

    Swipe.ResetSwipe();
    left = 0;
}

这是滑动脚本的代码

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Swipe : MonoBehaviour
{
    private float fingerStartTime = 0.0f;
    private Vector2 fingerStartPos = Vector2.zero;

    private bool isSwipe = false;
    private float minSwipeDist = 50.0f;
    private float maxSwipeTime = 0.5f;

    public enum SwipeDirection
    {
        none,
        up,
        down,
        right,
        left
    }

    public static SwipeDirection swipe;

    void Start()
    {
        swipe = SwipeDirection.none;
    }

    public static void ResetSwipe()
    {
        swipe = SwipeDirection.none;
    }

    // Update is called once per frame
    void Update()
    {
        if (Input.touchCount > 0)
        {
            foreach (Touch touch in Input.touches)
            {
                switch (touch.phase)
                {
                    case TouchPhase.Began:
                        /* this is a new touch */
                        isSwipe = true;
                        fingerStartTime = Time.time;
                        fingerStartPos = touch.position;
                        break;

                    case TouchPhase.Canceled:
                        /* The touch is being canceled */
                        isSwipe = false;
                        break;

                    case TouchPhase.Ended:

                        float gestureTime = Time.time - fingerStartTime;
                        float gestureDist = (touch.position - fingerStartPos).magnitude;

                        if (isSwipe && gestureTime < maxSwipeTime && gestureDist > minSwipeDist)
                        {
                            Vector2 direction = touch.position - fingerStartPos;
                            Vector2 swipeType = Vector2.zero;

                            if (Mathf.Abs(direction.x) > Mathf.Abs(direction.y))
                            {
                                // the swipe is horizontal:
                                swipeType = Vector2.right * Mathf.Sign(direction.x);
                            }
                            else
                            {
                                // the swipe is vertical:
                                swipeType = Vector2.up * Mathf.Sign(direction.y);
                            }

                            if (swipeType.x != 0.0f)
                            {
                                if (swipeType.x > 0.0f)
                                {
                                    // MOVE RIGHT
                                    swipe = SwipeDirection.right;
                                }
                                else
                                {
                                    // MOVE LEFT
                                    swipe = SwipeDirection.left;
                                }
                            }

                            if (swipeType.y != 0.0f)
                            {
                                if (swipeType.y > 0.0f)
                                {
                                    // MOVE UP
                                    swipe = SwipeDirection.up;
                                }
                                else
                                {
                                    // MOVE DOWN
                                    swipe = SwipeDirection.down;
                                }
                            }
                        }
                        break;
                }
            }
        }
    }
}

我调试的刷卡输入更新方法中的代码永远不会被调用或无法为我工作。我无法理解我做错了什么，因为相同的代码实际上可以在我以前的游戏中工作。

非常感谢您阅读我的问题，我希望会有人帮助我解决这个问题。

Answer 1

问题是您实际上对左右移动执行相同的操作：

剩下：

desiredPos = transform.position + Vector3.left * 1.52f;

对：

desiredPos = transform.position - Vector3.right * 1.52f;

“ + Vector3.left”与“ -Vector3.right”相同，因为左为（-1,0,0），右为（1,0,0）。 因此，在这两种情况下，您最终都会向位置添加相同的向量（-1,0,0），因为在Vector3.left左前有加号，在Vector3.right右前有减号。

因此，在两种情况下（加号或减号），您都需要使用相同的符号；或者，向右或向左）使用相同的矢量