How can I change the animation at runtime (i.e. depends what user is doing what is next animation) using the "mixing" concept, and without having to pre-program the mixing times based on from-to animation pairs? I'm using Corona.

In fact just a way to instead of just having the "setAnimationByName (trackIndex, animationName, loop)" function available, to be able to pass the mix time to it as well, so it mixed the current running animation with the new incoming animation, like:

    "setAnimationByName (trackIndex, animationName, loop, mixinTime)"

Issue: Currently I'm using "state:setAnimationByName(0, animationName, true)" to change animations, however there is an abrupt change at this point. Really need the smoothing effect of mixing I'm seeing. I don't think I can use the "AnimationState" approach (??) as it seems to require you pre-program the mix times for each permutation of old-to-new-transition, which would be many in my case.

Note: I see in the Java workshop there is something that seems close to what I want. Is this the answer / is this possible in Corona? It's doesn't seem ideal as it seems you have to load each animation via json separately?

   public void create () {
      batch = new SpriteBatch();
      renderer = new ShapeRenderer();

  atlas = new TextureAtlas(Gdx.files.internal("spineboy/spineboy.atlas"));
  SkeletonJson json = new SkeletonJson(atlas);
  SkeletonData skeletonData = json.readSkeletonData(Gdx.files.internal("spineboy/spineboy-skeleton.json"));
  walkAnimation = json.readAnimation(Gdx.files.internal("spineboy/spineboy-walk.json"), skeletonData);   // **** HERE *** 
  jumpAnimation = json.readAnimation(Gdx.files.internal("spineboy/spineboy-jump.json"), skeletonData);   // **** HERE *** 
  skeleton = new Skeleton(skeletonData);
  root = skeleton.getRootBone();
  root.setX(250);
  root.setY(20);
  skeleton.updateWorldTransform();
   }

   public void render () {
      time += Gdx.graphics.getDeltaTime() / 6;
      Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
      batch.begin();
      walkAnimation.apply(skeleton, time, true);
      if (time > 1) {
         float jumpTime = time - 1;
         float mixTime = 0.4f;
         if (jumpTime > mixTime)
            jumpAnimation.apply(skeleton, jumpTime, false);    // **** HERE *** 
         else
            jumpAnimation.mix(skeleton, jumpTime, false, jumpTime / mixTime);  // **** HERE *** 
         if (time > 4) time = 0;
      }
      skeleton.updateWorldTransform();
      skeleton.draw(batch);
      batch.end();
   }