That's perfect thank you for the help!

Thanks for the reply.

It seems setting TrackEntry to loop does not help as the original animation is already set to loop.
To clarify when you use SetAnimation on every frame, you'll only see the first frame of the animation.

I guess I could use a cached reference to the animation, it would look like the following code example.

The question I have now – is there a way to avoid having two variables for one animation? Like I'd love to serialize Spine.Animation straight away.

public class AnimationLoopTest : MonoBehaviour
{
   [SerializeField] SkeletonAnimation skeletonAnimation;

   [SerializeField]
   [SpineAnimation(dataField: "skeletonAnimation", fallbackToTextField: true)]
   string animationName;

   Spine.Animation spineAnimation;

   void Start()
   {
      spineAnimation = skeletonAnimation.skeleton.Data.FindAnimation(animationName);
   }

   void Update()
   {
      if (skeletonAnimation.AnimationState.GetCurrent(0).Animation != spineAnimation)
      {
         skeletonAnimation.AnimationState.SetAnimation(0, spineAnimation, true);
      }
   }
}

What's the best way to set a looping animation inside an update method without restarting the animation?
I have the following code but I'm afraid it might be inefficient.

void Update()
{
   if (IsPlaying(0, animation)) return;
   skeletonAnimation.AnimationState.SetAnimation(0, animation, true);
}

public bool IsPlaying(int trackIndex, string animationName)
{
   var animation = skeletonAnimation.AnimationState.Data.SkeletonData.FindAnimation(animationName);
   var trackEntry = skeletonAnimation.AnimationState.GetCurrent(trackIndex);
   if (trackEntry == null) return false;
   return trackEntry.Animation == animation;
}

Was it necessary to set the AttachmentThreshold to 1 even though there is no mix duration?

In case anyone stumbles on this question.

Find the SkeletonGraphicDefault material and enable the CanvasGroup Compatible check box.

Perfect! Thanks for the details, Nate

Oh, I see! That's an important distinction between data objects and instance objects.

Please correct me if I'm wrong. It also looks like a slot can only ever have one attachment. In the Spine editor, you can see many attachments but only one can be active at a time. I guess this is an illusion made for a better user experience? And looking at the exported animation data file, there are details about all of the slot attachment changes. This would suggest that the animation engine is changing attachments.

Is the actual attachment data always stored in the default skin?

Yep, this works perfectly, many thanks!

var attachment = skeleton.FindSlot(slotName).Attachment;
var isEnabled = attachment != null;

Could you clarify something:

an attachment can be in multiple slots in the same skeleton or in slots in other skeleton instances.

I was under the impression that attachments can only be in one slot, and can not change parents during an animation.

You can use the BoneFollower script:

1. Attach it to an empty game object.
2. Drag the skeleton reference into the script.
3. Pick a bone to follow.
4. Parent your particle system into the game object.
5. Optionally parent bone follower game object into the skeleton game object.

Specifically, how would I go about checking if the bounding box is currently disabled in the animation?

Interesting solution.

Unfortunately, I'm on a mac, and the files are also shared on google drive.

I think I'll have to reorganize the folder structure to include all of the images in every animation.

Is it possible to show images that are in the parent of the image path?

Here's an example folder structure:

- Root
  - Shared Graphics
    - shared.png
  - Animation 1
    - images
      - specific.png
    - anim.spine
  - Animation 2
  - Animation 3

I do not want to set the project's image path to the root.

I've tried setting the image path on a region attachment manually using the relative path:

"../../Shared Graphics/shared"

But it doesn't seem to work.

Any ideas?