当我的游戏完成异步功能时，如何启用功能？答案

【问题标题】：How do I enable a function when my game is done doing an asynchronous function?当我的游戏完成异步功能时，如何启用功能？
【发布时间】：2022-01-15 18:25:37
【问题描述】：

这让我作为初学者/学习编码员感到沮丧。我一直在努力做到这一点，所以当我的游戏使用异步方法完成加载时，它会加载一个按钮，以便您继续。相反，它完全忽略了该功能，导致按钮仍然在游戏中，并且当您过早按下它时会出现故障。我的代码就在这里；我该如何解决这个问题？

     IEnumerator LoadSceneAsynchronously(int levelIndex)
 {
     AsyncOperation operation = SceneManager.LoadSceneAsync(levelIndex);
     while (!operation.isDone)
     {
         Debug.Log(operation.progress);
         loading.GetComponent<Animator>().Play("loading");
         text.GetComponent<Animator>().Play("idle");
         yield return null;
     }
     if (!operation.isDone)
     {
         yield return new WaitForSeconds(5);
         loading.GetComponent<Animator>().Play("loading disappear");
         text.GetComponent<Animator>().Play("appear text");
         text.GetComponent<Animator>().Play("blink text")
         yield return null;
     }
 }

 public void DestroyLoading()
 {
     gameObject.SetActive(false);
     GameIsDoneLoading = true;
 }

 void Update()
 {
     if (Input.GetKeyDown(KeyCode.Space) && !GameIsDoneLoading == true)
     {
         Debug.Log("Space key was pressed.");
         text.GetComponent<Animator>().Play("disappear text");
         logo.GetComponent<Animator>().Play("fpsa logo disappear");
     }
 }

【问题讨论】：

标签： c# unity3d asynchronous

【解决方案1】：

当您在协程中“让步”时，代码执行将返回到下一帧中完全相同的位置，因此在上面的 while 循环中，它只是每帧检查该条件，然后让步到下一帧。我相信你想做的是……

IEnumerator LoadSceneAsynchronously(int levelIndex)
{
 // start the async loading
 AsyncOperation operation = SceneManager.LoadSceneAsync(levelIndex);

// start playback of your animations in the scene
loading.GetComponent<Animator>().Play("loading");
text.GetComponent<Animator>().Play("idle");
 
// now wait for the scene to fully load
while (!operation.isDone)
{
     Debug.Log(operation.progress);
     yield return null;
     // after yielding, we return here and repeat the while
     // loop on the next frame
}

// we have broken free of the while loop so the level has now fully loaded
// and operation.isDone is now true
// play some other animations to fade out the loading system?
     loading.GetComponent<Animator>().Play("loading disappear");
     text.GetComponent<Animator>().Play("appear text");
     text.GetComponent<Animator>().Play("blink text")

// I'm assuming these animations take about 5 seconds to complete?
// so just wait in here for 5
yield return new WaitForSeconds(5);

// loading level and animations all done...proceed to games
 DestroyLoading();
 }

【讨论】：