Animation not playing specific bones

Question

I have a mesh without any animation data that has the same rig as a few animations refusing to animate specific bones.

It is an ostrich, with a clean mesh without any animation data, as an FBX. It is rigged and working with the avatar from the FBX that has a "walk" animation. The mesh has its neck and head straight up, while the "walk" animation has the head stretched out in front of its body, the difference being the neck as a vertical line (idle) and a horizontal line (walk).

When playing the "walk" animation, the neck is refusing to animate as it is in the animation data - with a horizontal outstretched neck.

If I use the mesh that has the "walk" animation tied to it (FBX), then the horizontal outstretched neck works, but the idle animation is then screwed up.

Setting "write defaults" has no effect whatsoever.

Does anyone know how to fix this?

Using Unity 2019.4.6f1

Answer 1

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Answer by nubdev · Aug 18, 2020 at 08:21 AM

So I have been able to fix the problem by making sure each bone that was failing to animate has a keyframe not only in the first and last position, but in the middle of the anim cycle to move its rotation / transform. Having keyframes without any movement seems to not do anything, having movement, even if its a single unit, caused it to work properly.

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Animation not playing specific bones

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