当玩家被敌人击中时，如何将 yield wait for seconds 设置回 60 秒？

Question

基本上我想让一个玩家可以在用户按下启动按钮时随意变身为恶魔，但是我希望变身在 60 秒后结束（当变身结束时我希望玩家恢复到他的原始状态）。如果玩家被敌人击中，我还希望转换结束。到目前为止，我已经编写了这段代码并且它可以工作，但是当玩家被敌人击中并且用户决定按下按钮将玩家变回来时，我无法将 yield wait for seconds 重置为 60 秒成恶魔。谁能帮我解决这个问题？

在我的层次结构中，我的玩家是父级，恶魔玩家是子级。附加到玩家的玩家移动脚本以及下面的转换脚本：

  public GameObject demon;
  public BoxCollider2D col;
  public Renderer rend;
  public ParticleSystem par1;
  public static Vector3 target;


    void Start () {
        target = transform.position;
    }

    void Update () {
         target.z = transform.position.z;
    }

    public void DemonCharacter() {
    StartCoroutine (PowerUpCoroutine ());
}

     private IEnumerator PowerUpCoroutine() {

      yield return new WaitForSeconds (0.3f);

      par1.Play (); // particle system animation to cover transformation happening
  par1.transform.position = target;

      yield return new WaitForSeconds (0.2f);

      demon.SetActive (true); // activates demon gameobject

      rend.enabled = false; // deactivate players spriterenderer 

      col.enabled = false;

      yield return new WaitForSeconds (60f);

      demon.SetActive (false); // deactivates demon gameobject

      rend.enabled = true; // activate players spriterenderer

      col.enabled = true;

      par1.Stop ();
   }

在我的恶魔播放器上，我附上了这个脚本；我工作但是当用户点击按钮变成恶魔时，yield waitforseconds 不会停止，所以当玩家在几秒钟后变成恶魔时，恶魔玩家会变回玩家而不是重置 yield wait for seconds。

    public BoxCollider2D Playercol;
    public Renderer PlayerRend;

void Start()
{

}

void Update ()
{

}

void OnTriggerEnter2D(Collider2D col) {
    if (col.tag == "enemy") {
        demon.SetActive (false);
        PlayerRend.enabled = true;
        Playercol.enabled = true;
    }
}

Answer 1

我的建议是您将 Coroutine 修改为不使用 WaitForSeconds，而是使用它自己的计时计算。

// create the flag indicating interruption
bool _interrupt = false;

// create your coroutine
IEnumerator PowerUpCoroutine()
{
    // set the time you want to hold transformation
    const float TRANSFORMATION_INTERVAL = 60.0f;

    // currently elapsed time 
    float currentlyElapsed = 0.0f;

    // add your logic for pre-transformation 

    while ( currentlyElapsed < TRANSFORMATION_INTERVAL && !_interrupt )
    {
        yield return null;
        currentlyElapsed += Time.deltaTime;
    }

    // add post-transformation logic

    // revert transformation process

    _interrupt = false;
}

现在，如果您运行这个协程调用 StartCoroutine(PowerUpCoroutine());，您可以中断它，将 _interrupt 标志设置为 true。例如：

public void Interrupt()
{
    _interrupt = true;
}

// in some update :
if ( gotHitThisFrame == true )
    Interrupt();

Answer 2

@m.rogalski 建议的另一种方法是使用一个简单的浮点变量作为计时器：

public GameObject demon;
public BoxCollider2D col;
public Renderer rend;
public ParticleSystem par1;
public static Vector3 target;

private float demonTimer;

void Start()
{
    target = transform.position;
    demonTimer = 0.0f;
}

void Update()
{
    target.z = transform.position.z;

    if (demonTimer > 0.0f)
    {
        demonTimer -= Time.deltaTime;
        if (demonTimer <= 0.0f)
        {
            demon.SetActive(false);
            rend.enabled = true;
            col.enabled = true;
        }
    }
}

public void DemonCharacter()
{
    par1.Play();
    par1.transform.position = target;
    demon.SetActive(true);
    rend.enabled = false;
    col.enabled = false;

    demonTimer = 60.0f;
}

public void CancelDemon()
{
    demonTimer = 0.0f;
}

希望对您有所帮助，

当玩家被敌人击中时，如何将 yield wait for seconds 设置回 60 秒？

How to set the yield wait for seconds back to 60 seconds when the player gets hit by an enemy?

c#

unity3d

unity2d