Remove Animation event

Unity Engine
1

Hi,
I use AddEvent on animation clip to add few AnimationEvents for a specific model.
Then I load a different scene, which have a copy of the same model.
It appears that the new model’s animation still contain the events added to a different model in a different scene.
This model doesn’t have the same Components attached to it, so I get an Exception saying that AnimationEvent has no receiver.

Isn’t this a bug? Shouldn’t all animation event added by code should be remove when changing scenes?
If not, is there a way to remove animation events, so I’ll be able to remove all animation events I added before continuing to the next scene?

Thanks,
Yinon

2

Please can you post the script where you add the events?

3

Here the method that adds the event
The HasClipEvent and AddClipEvent calls are just used to keep track of the names of the event added so I wont add the same event twice

:

private void setupAnimation(string animationName, int layer, string functionName, string functionParam, float eventTime)
    {
        animation[animationName].layer = layer;
        if(functionName != null   AnimEventHandlers.HasClipEvent(animation[animationName].clip,functionName) == false)
        {
		    AnimationEvent animEvent = new AnimationEvent();
		    animEvent.functionName = functionName;
            if(functionParam != null)
            {
		        animEvent.stringParameter = functionParam;
            }
            float localEventTime = eventTime;
            if(eventTime == -1)
            {
                localEventTime = animation[animationName].clip.length * 0.9f;
            }
		    animEvent.time = localEventTime;
            animation[animationName].clip.AddEvent(animEvent);
            AnimEventHandlers.AddClipEvent(animation[animationName].clip, functionName);
            //print("Added animation event: anim= " + animationName + " time = " + animEvent.time + " functionName = " + animEvent.functionName + "param = " + animEvent.stringParameter);
        }
        
    }
4

It turns out that this has already been logged as a bug (it is case number 230246 if you want to follow it up) but it hasn’t been fixed yet.

5

Do we have an update to this bug? I’m trying to add an animation event which only triggers the first time and then removes itself. How would you recommend I do this, particularly in such a way that I can trigger a one-shot event going either forwards or backwards in the animation. My application is to use it as a trigger to stop looping sounds with enough of a margin before the animation completion that they have a little while to fade out.

Thanks so much!

6

+1, is there any update on this annoyance ?

7

As a workaround, I ended up creating my own looping sound support and just putting repeating animation events at the start and end of animations. Did the trick.

8

You can remove events like this:

public static void RemoveEventFromAnimator(string functionName, Animator animator)
{
AnimatorClipInfo animationClipInfo = animator.GetCurrentAnimatorClipInfo (0) [0];
AnimationClip animationClip = animationClipInfo.clip;

AnimationEvent[ ] animationEvents = animationClip.events;
List updatedAnimationEvents = new List ();

for (int i=0; i<animationEvents.Length; i++) {
AnimationEvent animationEvent = animationEvents*;*

  • if(animationEvent.functionName != functionName){*

  • updatedAnimationEvents.Add(animationEvent);*

  • }*

  • }*

  • animationClip.events = updatedAnimationEvents.ToArray ();*

  • }*

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