How to force a track to snap to an animation in Unity?

Xelnath

I'm loving how simple it is to setup the Unity runtime for Spine.

I've found SetAnimation and AddAnimation, but I can't figure out how to do a non-interpolating hard snap to an animation. (No blending, no transition, do a full application of this animation to this track).

It seems like it should be related to the Blend Modes, but I can't quite seem to pull it off without unity interpolating. The spine animation sets the bones I need snapped, but its definitely taking 5-6 frames to get there instead of one.

Edit: I've even called:

public void SetMix (String fromName, String toName, float duration);

With a duration of 0f.

Mitch

mm, if duration is 0 it should take 0 frames.... are you sure you're setting the From and To names correctly?

Also... I'm not actually sure if SetMix needs to be set before the Skeleton initializes or not.

Anyway, you can also apply an animation directly using:

animation.Apply(skeleton, blahblahblah)

Xelnath

I was definitely changing the mix before the animation played.

I discovered that the animation was blending because the keyframe which setup the bone orientation was being skipped due to a "resume animation" feature I added.

I was finally able to get close (there's a 1-frame hitch, which might be on my end) by doing:

void ResumePreviousStance(bool bReset)
{
    _currentStance = _prevStance;
    skeleton.state.SetAnimation(0, _currentStance.Animation, (bool) _currentStance.Looping);
    if ( bReset ) skeleton.Reset();
    skeleton.state.GetCurrent(0).Time = skeleton.state.GetCurrent(0).EndTime * _prevProgress;

}

Should I be using Apply instead? What side-effects of this method might be occurring that won't be noticed till later?

Mitch

SetToSetupPose is the correct one here I believe.

Honestly, I think you might want to consider not using SkeletonAnimation and just bypassing AnimationState all together. Take a look at how SkeletonAnimator works for a quick look at how .Mix and .Apply can be used directly.

Xelnath

If I do that, won't I lose the state of animation on the other tracks? In this case, I only want to snap Track[0] into place while allowing the rest of the elements to run normally.

Mitch

Yea. I'm saying that you should not use the built in spine tracks heh. Write your own animation state 🙂. Spine's isn't the best for this kind of stuff IMO. I've been thinking about writing a more comprehensive one as well.

Xelnath

Phew. That's a little more than I can chew off right now. You might be right, but I think what I have will be close enough until later in the game. 🙂

Mitch

Heh all good. I just know that having blend-trees was an absolute necessity for me when I started tackling a few things.

http://www.xdtech.net/spine/BlendTree.html
http://www.xdtech.net/spine/SpineboyBlendTree.unitypackage (fair warning, ancient code base, merge manually)

Xelnath

Thanks! I already know one of the "aiming" poses I want for my main rifle character needs a blend tree - just going one step at a time, ya know?