Animation modifiers for
Animation Modifier Blueprints run in the editor and write data into an Animation Sequence. They do not run as character components during play.BP_BoneMotionExtractor exposes CurveName, RefBoneName, BoneName, SourceAnimation, CurveNames, Playback, RefPose, and SampleRate. Its apply path processes the selected sequence and its revert path removes the authored result.
1
Protect the source
Duplicate the target Animation Sequence when the supplied asset must remain updateable.
2
Add the modifier
Open the Animation Sequence. Add
BP_BoneMotionExtractor in the Animation Modifiers panel.3
Configure extraction
Set
SourceAnimation, BoneName, RefBoneName, the output curve name or names, and SampleRate.4
Apply and inspect
Apply the modifier. Inspect the generated curves, then preview the Animation Blueprint or weapon view that consumes them.
5
Revert if needed
Use the modifierโs revert workflow if the result is offset, noisy, or sampled too sparsely. Do not delete only part of the generated curve data.