Support `Transform` interpolation

Jondolf / avian

ECS-driven 2D and 3D physics engine for the Bevy game engine.

https://crates.io/crates/avian3d

Apache License 2.0

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Support `Transform` interpolation #444

Open janhohenheim opened 2 months ago

janhohenheim commented 2 months ago

Should probably implement #263 first
Closely related to https://github.com/bevyengine/bevy/issues/1259
Take note of the fact that GlobalTransform is currently not updated between FixedUpdate calls: https://github.com/bevyengine/bevy/issues/7836
- Should not be that important since it's a visual component and should be updated during the visual part of the frame

janhohenheim commented 3 weeks ago

See my crate avian_interpolation for a suggestion for how to handle this. It's not fit for being directly upstreamed as it completely removes the transform sync, which would be a much more controversial change, but it should be a good starting point. Another option is to just use bevy_transform_interpolation and accept the fact that it necessarily stores redundant data.