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Question by Damien113 · Nov 11, 2015 at 04:30 PM · crashing

Random Crashing with Courotine

 void Start()        
 StartCoroutine(randomRoars());
     }
        
  
     IEnumerator randomRoars()
     {
         while (true)
         {
  
             if (!monsterSound1.isPlaying)
             {
                 float rdmtime = Random.Range(0, 10);
                 yield return new WaitForSeconds(rdmtime);
                 monsterSound1.clip = roars[Random.Range(0, roars.Length)];
                 monsterSound1.Play();
             }
         }
 
         }

This snippet of code is causing my editor to crash every time. Theres moe to it but this is all the code that is causing it, i tested it for a hour and a half removing little snippets. Anyways, any idea why this would be?

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Answer by Dave-Carlile · Nov 11, 2015 at 07:10 PM

Cortouines are a form of cooperative multitasking. You must yield occasionally or other code never has a chance to run.

In your code, if monsterSound1.isPlaying is true your loop effectively becomes this:

 while (true)
 {
 }


That's an infinite loop. Since there is no yield being executed, no other code will ever be allowed to execute. You need to have a yield if monsterSound1.isPaying is true, something like...

 while (true)
 {
     if (!mosnterSound1.isPlaying)
     {
          // play sound
     }
     else
     {
          yield return null;  // yield until the next frame, 
          // or you could yield  for a certain amount of time or whatever,
          // but you must yield
     }
 }
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