Unity has no receiver ошибка

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witcherknight

Когда я посылаю SendMessage объекту, то приходит вот такая вот ошибка

SendMessage GetThatItem has no receiver!

я не понял, кажется у меня раньше не было такой ошибки никогда, что значит не имеет Receiver (применика)?
Насколько это критично? Для чего это вообще? Что за Receiver (приемник)?

Нашел в документацию опцию,
SendMessageOptions.DontRequireReceiver
я так понимаю ее надо только в одном экземпляре использовать на всю игру вначале инициализации?
надеюсь ничего критичного не будет

I have a GameObject that adds an AnimationEvent to a clip that calls a function at completion of the animation. It calls this function reliably — until I destroy the game object. I destroy the object when I detect a collision and I am careful to call Animation.Stop() before I destroy the object, so the end function callback should not be called, but appears to be. My worry is that Unity might still try to call the function even if I stop the animation early, but by that time the object is gone.

The relevant code:

 function BeginIdleAnimation() {
     if (idleAnimation) {
         var repeat : boolean = idleAnimation.wrapMode == WrapMode.Loop 
             || idleAnimation.wrapMode == WrapMode.PingPong;
         PlayAnimationClip(idleAnimation, repeat ? "IdleAnimDone" : null);
         PlayClip(idleSound);
     }
 }
 
 function PlayAnimationClip(clip : AnimationClip, endFunc : String) {
     if (clip) {
         // create event that calls desired endFunc when animation completes
          if (endFunc) {
              var event : AnimationEvent = new AnimationEvent();
               event.functionName = endFunc;
               event.time = clip.length; 
                clip.AddEvent(event);
            }
         animation.clip = clip;
         animation.Play();
     }
 }
 
 // Here's the relevant snippet of collision code that supposedly stops the animation before destroying itself...
 
 function OnCollision(p : Projectile) {
     if (p) {
         animation.Stop();
         Destroy(transform.parent.gameObject);
     }
 }
 
 function IdleAnimDone() {
     PlayClip(idleSound);
 }
 

I get «AnimationEvent ‘IdleAnimDone’ has no receiver!» error.

Thanks in advance!

Answer by 3Duaun · Sep 14, 2011 at 11:37 PM

oddly enough, AnimationEvent seems to use SendMessage, and CANT send AnimationEvent Calls to an animation component on a different object(in the hierarchy). You MUST, apparently, from the bit I researched( I could be wrong, but just reproduced this error and fix in a test scene), issue those AnimationEvent calls to an animation component(holding your anim clips) on the same object as the script issuing the AnimationEvent calls.

Answer by 3Duaun · Sep 21, 2011 at 02:57 AM

Make your animation event call on the SAME object that has the ANIMATION COMPONENT you are adding the events to, and then you dont need to perform the dontRequireReceiver option as well. SendMessage can have requirements on which direction in the hierarchy it will send the message to

Answer by jackpile · Sep 20, 2011 at 11:28 PM

Answer by GordonLudlow · Aug 16, 2012 at 02:11 AM

Another way this can happen is if the component is removed from the animated object (or someone on your team doesn’t check the addition of the component to the prefab into version control but does check in the animation change).

Answer by RKSandswept · Sep 10, 2014 at 09:32 PM