Collisions

Custom collision meshes using the UCX_ naming convention

UCX_ Naming Convention

Add simplified collision geometry to your FBX file by naming meshes with the UCX_ prefix followed by the target mesh name (e.g. UCX_Table_01 for collision on Table_01). The plugin detects these automatically and hides them from rendering.

Supported Prefixes

PrefixCollision Type
UCX_Convex hull collision
UBX_Box collision (exporter dependent)
USP_Sphere collision (exporter dependent)

Multiple Collision Hulls

For complex objects, create multiple UCX_ meshes and suffix them with an index: UCX_Chair_01, UCX_Chair_02, etc. The plugin combines all hulls into the final collision for that mesh.

Runtime FBX Import for Unreal Engine - Documentation | Athian Games