向上、向下、向左或向右滑动时，如何调用另一个类中的方法？ Unity2D

Question

我有一个几天前开始的 Unity 项目。这是一款简单的 2D 自上而下的射击游戏，旨在在智能手机平台上玩。

我有一个 Shooting 脚本，它基本上有一个名为 Shoot1 的方法，它在子弹中生成。

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

public class Shooting : MonoBehaviour
{
    public Transform firePoint;
    public GameObject BulletRedPrefab;
    public GameObject BulletGreenPrefab;
    public float bulletForce = 20f;
    // Update is called once per frame
    void Start()
    {

    }

    void Update()
    {

    }

    public IEnumerator Shoot1()
    {
        yield return new WaitForSeconds(0.00001f);
        GameObject bullet = Instantiate(BulletRedPrefab, firePoint.position, firePoint.rotation);
        Rigidbody2D rb = bullet.GetComponent<Rigidbody2D>();
        rb.AddForce(firePoint.up * bulletForce, ForceMode2D.Impulse);
    }
}

我还有确定滑动方向等的 Swipe 脚本。

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

public class Swipe : MonoBehaviour
{
    private bool tap, swipeUp, swipeDown, swipeLeft, swipeRight;
    private bool isDraging = false;
    private Vector2 startTouch, swipeDelta;
    // Update is called once per frame
    private void Update()
    {
        tap = swipeUp = swipeDown = swipeLeft = swipeRight = false;
        if (Input.touches.Length > 0)
        {
            if (Input.touches[0].phase == TouchPhase.Began)
            {
                isDraging = true;
                tap = true;
                startTouch = Input.touches[0].position;
            }
            else if (Input.touches[0].phase == TouchPhase.Ended || Input.touches[0].phase == TouchPhase.Canceled)
            {
                isDraging = false;
                Reset();
            }
        }

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

        swipeDelta = Vector2.zero;

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

        if (swipeDelta.magnitude > 125)
        {
            float x = swipeDelta.x;
            float y = swipeDelta.y;
            if (Mathf.Abs(x) > Mathf.Abs(y))
            {
                if (x < 0)
                    swipeLeft = true;
                else
                    swipeRight = true;
            }
            else
            {
                if (y < 0)
                    swipeDown = true;
                else
                    swipeUp = true;
            }
            Reset();
        }
    }

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

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

我有 GestureDetector 脚本，该脚本旨在在用户向左、向右、向上或向下滑动时发射子弹。当我试图通过滑动使玩家对象（称为机器人）移动时，它起作用了。但是当我尝试通过滑动调用另一个类的方法时，它不起作用。

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

public class GestrueDetector : MonoBehaviour
{
    public Shooting other;
    public Swipe swipeControls;
    // Start is called before the first frame update
    void Start()
    {

    }

    // Update is called once per frame
    private void Update()
    {
        if (GameObject.Find("robot") != null)
        {
            if (swipeControls.SwipeLeft)
                desirePosition += Vector3.left;
            other.Shoot1();

            if (swipeControls.SwipeRight)
                desirePosition += Vector3.right;
            other.Shoot1();

            if (swipeControls.SwipeUp)
                desirePosition += Vector3.up;
            other.Shoot1();

            if (swipeControls.SwipeDown)
                desirePosition += Vector3.down;
            other.Shoot1();
        }
    }
}

我这周刚开始使用 unity，所以我对这个软件还很陌生。非常感谢！

Answer 1

对于协程，你需要像这样调用这个方法：

StartCoroutine(Shoot1());

我稍微改变了你的课程：

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

public class Shooting : MonoBehaviour
{
    public Transform firePoint;
    public GameObject BulletRedPrefab;
    public GameObject BulletGreenPrefab;
    public float bulletForce = 20f;

    void Start ()
    {
    }

    void Update()
    {
    }

    public void Shoot()
    {
       StartCoroutine(Shoot1());
    }

    private IEnumerator Shoot1()
    {
        yield return new WaitForSeconds(0.00001f);
        GameObject bullet = Instantiate(BulletRedPrefab, firePoint.position, firePoint.rotation);
        Rigidbody2D rb = bullet.GetComponent<Rigidbody2D>();
        
        rb.AddForce(firePoint.up * bulletForce, ForceMode2D.Impulse);
    }
}

对于 GestrueDetector：

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

public class GestrueDetector : MonoBehaviour
{
public Shooting other;

public Swipe swipeControls;

   
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
   private void Update()
    {

        if (GameObject.Find("robot") != null)
{
    
        if (swipeControls.SwipeLeft)
            desirePosition += Vector3.left;
              other.Shoot();    

        if (swipeControls.SwipeRight)
            desirePosition += Vector3.right;
              other.Shoot();

            if (swipeControls.SwipeUp)
            desirePosition += Vector3.up;
            other.Shoot();
                 

                  

            if (swipeControls.SwipeDown)
            desirePosition += Vector3.down;
            other.Shoot();
                  

                  


}
        }
    }

阅读更多关于协程如何在 Unity 中工作的信息 - https://docs.unity3d.com/ScriptReference/Coroutine.html