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c# - 不知道是不是在协程函数中使用了太多的 'yield return new WaitForSeconds'

问题描述

** Unity5.6.5f1 / C#

我使用协程来运行动画。

而不是在更新函数中创建多个 if 语句，

我认为协程会更好。

但我认为我使用'yield return new WaitForSeconds'太多了，

以这种方式编写协程很常见吗？

private IEnumerator AnimationControl()
{
    yield return new WaitForSeconds(41f);        
    objAni.gameObject.SetActive(true);
    obj2Ani.gameObject.SetActive(true);
    obj3Ani.gameObject.SetActive(true);
    objAni.Play("Stay");
    obj2Ani.Play("Stay");
    obj3Ani.Play("Stay");

    yield return new WaitForSeconds(5.667f);        
    objAni.Play("Run");
    obj2Ani.Play("Run");
    obj3Ani.Play("Action");

    yield return new WaitForSeconds(3.666f);
    objAni.Play("Fire01");

    yield return new WaitForSeconds(2.334f);
    obj3Ani.Play("Panic");
    obj2Ani.gameObject.SetActive(false);

    yield return new WaitForSeconds(8.333f);
    objAni.Play("Fire02");

    yield return new WaitForSeconds(6.333f);      
    objAni.Play("Fire03");

    yield return new WaitForSeconds(6.1337f);       
    obj3Ani.Play("Stay");
    objAni.Play("Stay");

    yield return new WaitForSeconds(3.2003f);        
    obj3Ani.Play("Surprise02");
    objAni.Play("Surprise");

    yield return new WaitForSeconds(3.333f);                
    obj3Ani.Play("Run");
    objAni.Play("Run");

    yield return new WaitForSeconds(6f);
    objAni.Play("Stay");

    yield return new WaitForSeconds(1.667f);      
    objAni.Play("Run");

    yield return new WaitForSeconds(2.333f);        
    obj3Ani.gameObject.SetActive(false);

    yield return new WaitForSeconds(0.667f);        
    objAni.gameObject.SetActive(false);

    yield return new WaitForSeconds(1.333f);
    textObj.SetActive(false);

    yield return new WaitForSeconds(2.667f);
    endingObj.SetActive(true);
    allObj.SetActive(false);
}

谢谢阅读。

标签： c#unity3dcoroutine

解决方案

这正是协程的用途，即顺序执行许多代码，甚至随时等待。这不是太多。我看到的唯一问题是WaitForSeconds每次都创建新的。如果您知道等待的时间或者您对时间进行了硬编码，请WaitForSeconds在函数外部声明然后对它们屈服。这实际上取决于您调用该AnimationControl函数的频率。

例如，

private IEnumerator AnimationControl()
{
    yield return new WaitForSeconds(41f);
    objAni.gameObject.SetActive(true);
    obj2Ani.gameObject.SetActive(true);
    obj3Ani.gameObject.SetActive(true);
    objAni.Play("Stay");
    obj2Ani.Play("Stay");
    obj3Ani.Play("Stay");

    yield return new WaitForSeconds(5.667f);
    objAni.Play("Run");
    obj2Ani.Play("Run");
    obj3Ani.Play("Action");
}

变成

WaitForSeconds wTime1 = new WaitForSeconds(41f);
WaitForSeconds wTime2 = new WaitForSeconds(5.667f);

private IEnumerator AnimationControl()
{
    yield return wTime1;
    objAni.gameObject.SetActive(true);
    obj2Ani.gameObject.SetActive(true);
    obj3Ani.gameObject.SetActive(true);
    objAni.Play("Stay");
    obj2Ani.Play("Stay");
    obj3Ani.Play("Stay");

    yield return wTime2;
    objAni.Play("Run");
    obj2Ani.Play("Run");
    obj3Ani.Play("Action");
}

如果你真的想减少WaitForSeconds代码，你可以围绕它做一个包装类。这个类应该保持等待甚至更好的时间，WaitForSeconds然后用实例Action来表示等待后要执行的代码。创建一个Listthis class，循环它，等待然后执行Action变量中的代码。

包装类：

public class AnimControlInfo
{
    public WaitForSeconds waitTime;
    public Action action;
}

创建它的列表：

List<AnimControlInfo> animInfo = new List<AnimControlInfo>();

初始化List以便它可以在AnimationControl函数中使用：

void InitControlAnimInfo()
{
    AnimControlInfo aI1 = new AnimControlInfo();
    aI1.waitTime = new WaitForSeconds(41f);
    aI1.action = delegate
    {
        objAni.gameObject.SetActive(true);
        obj2Ani.gameObject.SetActive(true);
        obj3Ani.gameObject.SetActive(true);
        objAni.Play("Stay");
        obj2Ani.Play("Stay");
        obj3Ani.Play("Stay");
    };

    AnimControlInfo aI2 = new AnimControlInfo();
    aI2.waitTime = new WaitForSeconds(5.667f);
    aI2.action = delegate
    {
        objAni.Play("Run");
        obj2Ani.Play("Run");
        obj3Ani.Play("Action");
    };

    //Add to List
    animInfo.Add(aI1);
    animInfo.Add(aI2);
}

然后AnimationControl是等待和播放动画或激活/停用 GameObects 的新功能：

private IEnumerator AnimationControl()
{
    //Loop over the List, wait then do action
    for (int i = 0; i < animInfo.Count; i++)
    {
        yield return animInfo[i].waitTime;
        if (animInfo[i].action != null)
            animInfo[i].action();
    }
}

函数中的代码量AnimationControl已减少。它还减少了WaitForSeconds类的过度使用。

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