Are Coroutines the best way to delay ? If not, what is ? C#

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Hello everyone :)

I'm doing my first attempt at creating a game and a few weeks back, I've read that when you wanted to delay something, coroutine was a good way to go. But recently, I've been felling like it's maybe not that good. So I did some research and indeed, it seems like coroutines are a debatable subject.

If I use coroutines exclusively for the "yield return new WaitForSeconds()", is that a good idea? If not, is there any other "simple" way to delay something that easily?

Thanks for any answer :)

Answer 1

Answer by connorwforman · Oct 27, 2017 at 03:19 PM

I would say yes. They are to use, but they can be a bit tricky to call. Here is an example how to use one. Let's say we want an object to appear 3 secs. after we enter a trigger. Coroutines with WaitForSeconds are always IEnumerator's

 public GameObject object; 
 public float Timedelay = 3f; 
 
 void OnTriggerEnter (Collider other) {
          StartCoroutine (delay()); //There needs to an open/close parenthesis before the closing one. 
          object.SetActive (true); 
 }
 
 IEnumerator delay () {
       yield return new WaitForSeconds (Timedelay); 
 }

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Hellium · Oct 27, 2017 at 06:39 PM 0

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That's exactly how not to use coroutines. object.SetActive (true); must be inside the coroutine.

Answer 2

Answer by unity_oeoSVeiNfO-Y8A · Oct 02, 2021 at 12:42 AM

Using MonoBehaviour.Invoke() instead of StartCaroutine() have possibility to invoke any method in class with delayed seconds:

  public GameObject object; 
  public float TimeDelay = 1; 
  
  void OnTriggerEnter (Collider other) {
           Invoke("MyFuncionFoo", TimeDelay ); //This will invoke your function after 1 second ...
  }
  
  void MyFuncionFoo() {
        object.SetActive (true); 
  }

API documentation here

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Are Coroutines the best way to delay ? If not, what is ? C#

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