What's the difference between custom collision in import collisions and Import Collisions According to Mesh Name

[Hydrochen0118]

When import fbx , the “import collision” say it will import custom collision ,and “Import Collisions According to Mesh Name” says it will handle mesh with certain prefix as collision . But what’s the difference between custom collision and mesh with certain prefix?

[UE_FlavienP]

Maybe some confusing phrasing, custom collision and collision according to mesh name are the same.

You have 3 options:

• If you do not tick the Import Collisions: no collisions will be imported or generated
• If you tick import Collision but not Import Collisions According to Mesh Name then UE generates collision for all your meshes based on fallback collision type
• If you tick both import Collision and Import Collisions According to Mesh Name then UE will use the UBX_ UCP_ USP_ UCX_ as collision meshes for corresponding meshes. For meshes that do not have a corresponding custom collision then UE generates collision based on fallback collision type