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Limb Animation Blueprint

Every detached limb runs an Animation Blueprint whose parent class is UEGoreSystemAnimInstance. That class holds the captured pose (Detached_Snapshot) and turns physics on only after the graph has applied it.

If this Blueprint is missing, targets the wrong skeleton, or does not read the snapshot, the limb will pop to reference pose, hang invisible, or simulate from a T-pose.

Shipped examples

The plugin already includes Animation Blueprints for the UE4 mannequin and MetaHuman skeletons. Point Global Anim Instance at one of those if you use that skeleton, or duplicate one for your own.

UE4 example MetaHuman example

Create one for a new skeleton

  1. Content Browser → Animation → Animation Blueprint.
  2. Parent Class: UEGoreSystemAnimInstance (not AnimInstance).
  3. Target Skeleton: the same skeleton the limb mesh uses.
  4. Do not use the + next to the class picker on the component. That does not create an Animation Blueprint.

Open the AnimGraph.

Required node

Add Pose Snapshot.

  • Snapshot name / pose: bind it to Detached Snapshot (the FPoseSnapshot on UEGoreSystemAnimInstance).
  • Connect the result to Output Pose.

Pose Snapshot

You can copy the graph from the mannequin or MetaHuman example and assign your skeleton.

This AnimInstance is responsible for positioning the mesh correctly, including after physics is enabled.

Checklist

  • Parent class is UEGoreSystemAnimInstance.
  • Skeleton matches the spawned mesh (pre-cut limb or auto-cloned character).
  • Pose Snapshot is in the AnimGraph and reads Detached_Snapshot.
  • Global Anim Instance on the component points at this Blueprint.
  • The mesh has a Physics Asset.

Mixamo / custom rigs

Same steps. The skeleton must have a usable root and a Physics Asset. Video: Auto dismemberment , any skeleton.

Control Rig characters

The character still uses its own AnimBP / Control Rig. The limb still needs this snapshot AnimBP. They are not the same asset.

For the character side, add Gore Update to the Control Rig and enable Control Rig Procedural. See Control Rig and Lyra.