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Question by Diablo404 · Oct 13, 2014 at 05:20 PM · ienumeratorcallbackaction

Unsolvable issue with System.Action and IEnumerator

I have 2 scripts. One in UnityScript called Calling.js, another in C# called DelegateHandler.cs, here are the two scripts:

Calling.js:

 function Awake () 
 {
     var myHandler : DelegateHandler = DelegateHandler.Get().OnEvent( Callback );
     myHandler.TryHandler();
 }
 
 function Callback( _string : String ) : IEnumerator
 {
     //yield WaitForSeconds(1);
     print("value = "  + _string);
 }


And DelegateHandler.cs:

 public class DelegateHandler : MonoBehaviour 
 {
     public static System.Action<string> callbackAction;
 
     public static DelegateHandler  Get()
     {
         DelegateHandler delegateHandler = GameObject.Find ("Main Camera").AddComponent<DelegateHandler>();
         return delegateHandler;
     }
 
 
     public DelegateHandler  OnEvent( System.Action<string> _callback)
     {
         callbackAction = _callback;
         return this;
     }
 
     public void TryHandler()
     {
          callbackAction("test") ;
     }
     
 }



I need OnEvent to be DelegateHandler typed.

Problem is: If I uncomment the yield WaitForSeconds(1) on the .js , the Callback function is never called.

I've searched for hours for workaround with delegates() , abstract methods and everything but I can't find anything to make this work... I think I have teared enough hair of my head to make myself a new wig!

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avatar image fafase · Oct 13, 2014 at 05:22 PM 0
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Action delegate are meant to return void, your coroutine returns IEnumerator. Try a Func ins$$anonymous$$d.

I put this as comment because the whole js/c# I am not sure about.

avatar image Diablo404 · Oct 13, 2014 at 05:41 PM 0
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Thanks for this answer. I took few $$anonymous$$utes to understand how Func works. I've replaced

OnEvent( System.Action < string > _callback) BY
OnEvent( Func < string, IEnumerator > _callback) AND System.Action < string > callbackAction; BY Func < string, IEnumerator > callbackAction;

But sadly, same issue. Works without the yield. Never called with the yield uncommented

Edit: I put spaces between Func and < string ,etc otherwise it was deleted by the comment ( ? )

avatar image Diablo404 · Oct 13, 2014 at 06:12 PM 0
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Well... I had to wrap callbackAction("test") into StartCoroutine(); It works... like... I mean... finally... thank you so much. Please post an answer so I can accept It

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