Bullet Cache, Hierarchies and Bones
Bullet Cache
As Bullet solves dynamic calculations, it stores the results in a cache so that animation playback can be fluid. The cache is automatically stored in the ‘Dynamics’ folder of the current Content Directory for the scene (this can be changed in the Options > Paths window, which can be accessed by pressing the o key). The cache file is named the same as the scene file, but has a .dynacache extension.
Bullet and Hierarchies
If you note that the motions of a parent object are not being updated in Bullet for a child object with Bullet applied, reset your dynamics cache on the World tab of Bullet Properties.
Bullet and Bones
You can parent a Bullet-controlled kinematic object to a bone and animate the bone using IK, targeting, etc. Bullet dynamics will read the motions.
04 December 2024