Why is the next statement executed before yield?-CodePudding

I'm expecting the program to pause until yield is executed but it's not. The DisplayTileBacks() function runs while PauseGame() is being executed:

void Start()
{
... 
        DisplayTileFronts();
        StartCoroutine(PauseGame(3f));
        DisplayTileBacks();
}

public IEnumerator PauseGame(float waitTime)
{
    Time.timeScale = 0f;
    float waitEndTime = Time.realtimeSinceStartup   waitTime;
    while (Time.realtimeSinceStartup < waitEndTime)
    {
        yield return 0;
    }
    Time.timeScale = 1f;
}

What am I doing wrong?

CodePudding user response：

You need to edit code similar to the following.

void Start()
{
... 
  
    StartCoroutine(Display(3f));
}

public IEnumerator Display(float waitTime)
{
    DisplayTileFronts();
    yield return new WaitForSeconds(waitTime));
    DisplayTileBacks();
}