Imported mesh doesn't collide with the ground

[Takemura]

Your meshes[0] from .glb is a root-mesh without any vertices, so using BoxImpostor won’t work on root-mesh.

A similar issue is discussed here:

Better way to give physics to imported GLTF/GLB scene meshes?

Hello, I have a question with a Playground link now! I’m trying to add colliders (aka “impostors” in Babylon) with the default CannonJS implementation, and it’s messing up the locations and rotations of all my objects from the original scene. Here is what my scene is supposed to look like: [Screenshot_20230126_103033] Here is what my scene looks like after I assign impostors to all my meshes: [image] From what I understand, this is a side effect stemming from the impostor creation system…

Or use AmmoJS like this:

Babylon.js Playground

With AmmoJS you could even just use MeshImpostor on root if I remember correctly.