How in the world do I nest Animations manually?

Unity Engine
1

This Animation controller has all it’s animation states nested under the controller. I think this is a great way to organize. Only issue is I can’t do this myself, the only way I’ve seen to get this setup is with “Auto Generate Animation” when using a UI>Button, but if I try to setup this type of relationship with other objects manually, I simply can’t nest the animations under the object.

Functionally it’s almost the same except other animation controllers can’t access another controller’s animations if they are nested, which is fine but I just want to know how to accomplish this. Is it possible to do this manually on our own?

TL;DR: UIButton’s Auto Generate Animation does something I can’t seem to recreate.

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How do you make these kind of Nested Animator Controller Files?
2

You can do it via API:

4 Likes
3

Perfect! Exactly what I needed to see.

4

It is working and I can add new AnimationClips to Controller just fine, but when I try to add this clip to newly created empty state it gives me an error :
Animation clip ‘End’ is not retargetable. Animation clips used within the Animator Controller need to have Muscle Definition set up in the Asset Importer Inspector.
Any tips?

5

I’m not sure. Is the clip an ‘imported’ clip. If it’s an asset on the HD you probably can’t add it as a child.

6

Possible feature request: could we have AnimationClips be nested in the AnimatorController by default? I don’t think I’ve ever once reused an AnimationClip in a different controller, and associating clips with the correct controller is…challenging at best.

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7

It’s not “imported”, I’ve just added it like this:

AnimationClip clip = new AnimationClip();
clip.name = clipName;
AnimatorController controller = Selection.activeObject as AnimatorController;
AssetDatabase.AddObjectToAsset(clip, controller);
AssetDatabase.ImportAsset(AssetDatabase.GetAssetPath(controller));

error appears when I try to assign such nested clip to motion field

961×391 80.3 KB

BTW, Is there a way to remove nested clip?

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8

Here is the method Unity uses to generate a transition

private static AnimationClip GenerateTriggerableTransition(string name, AnimatorController controller)
{
    AnimationClip animationClip = AnimatorController.AllocateAnimatorClip(name);
    AssetDatabase.AddObjectToAsset(animationClip, controller);
    State dst = AnimatorController.AddAnimationClipToController(controller, animationClip);
    controller.AddParameter(name, AnimatorControllerParameterType.Trigger);
    StateMachine stateMachine = controller.GetLayer(0).stateMachine;
    Transition transition = stateMachine.AddAnyStateTransition(dst);
    AnimatorCondition condition = transition.GetCondition(0);
    condition.mode = TransitionConditionMode.If;
    condition.parameter = name;
       
    return animationClip;
}

PS: If you are interested i’ve made a little class to help me create animator controllers with custom states just like the Auto Generator in Unity. Here’s the link: http://pastebin.com/ZLjZ1gda

3 Likes
9

Hey, thanks! This work just great!

1 Like