Issue with Aim Animation on Track 1 Not Affecting Bones When Combined with Walk

whereamI

Hi everyone,

I’m running into an issue with animation mixing using Spine and Godot.

When I play my "aim" animation on its own, it works perfectly – the bones (like arms or the aim target) follow the IK and move as expected.

However, when I combine it with another animation, like "walk" or "idle" on a different track (e.g. "walk" on track 0 and "aim" on track 1), the bones that are supposed to be controlled by "aim" no longer respond to it. Instead, they follow the lower-body animation and ignore the aiming movement.

To clarify, my "walk" animation affects the entire skeleton, including the upper body and aim bones. I’ve checked that "aim" is assigned to the correct track, and I do see it playing, but it seems like it’s not overriding the animation from track 0 when both are active.

Any help or example setups would be really appreciated!

Thanks in advance 🙏

Spinebot

When using multiple animation tracks in Spine, the animations on higher tracks should override the effects of animations on lower tracks if they key the same skeleton properties. In your case, the "aim" animation on track 1 should override the "walk" animation on track 0 for the bones it affects. However, if the "walk" animation keys the entire skeleton, including the upper body and aim bones, it might be overriding the "aim" animation. To resolve this, ensure that the "aim" animation is set to only key the specific bones it needs to control, such as the arms or aim target, and not the entire skeleton. Additionally, you can adjust the mix settings to ensure smooth transitions between animations. You might also want to check the alpha value of the TrackEntry for the "aim" animation to ensure it is set correctly to allow for proper mixing.

whereamI

Thanks for the explanation, but I think that’s exactly the problem I’m facing.
It seems like track 0 is overriding track 1 completely – when I watch the bones during playback, they stay fixed as defined by the animation on track 0, even though track 1 is playing the "aim" animation.

I tested this same setup using Spineboy, where "walk" is a full-body animation on track 0, and then "crosshair" (aim) is added on track 1 — and it works perfectly there: the aiming bones are controlled by track 1, while the lower body continues walking from track 0.

So I’m trying to understand:
What is Spineboy doing differently that allows the upper body bones to follow the aim animation correctly, even when track 0 includes keyframes for the entire skeleton?

whereamI

Hey, I figured it out—thanks anyway! I found the mistake.