Collision with specific impostors

[cpusam]

Hello again,
how can I activate collision with only some impostors?
For example:
I put side by side many meshes, but the collision it’s only from this set of meshes to only one entity.
How to disable collision from the set to the set of meshes?
I have searched but without any good answer.

[cpusam]

I found it!
For who is using cannon:

Ignore collisions between two physics objects

I just tried, and they didn’t seem to work. Also, here is a playground: https://www.babylonjs-playground.com/#Z0QW21#26 Aim at a 45 degree angle up, and the sphere hits the cylinder physics impostor. shammo is the sphere, player0 is the cylinder. And, add in question. can I use shammo.intersectsMesh(ground0, true); with it working? When the sphere hits the plane you get moved to where it hit. but it freezes the plaground when un-annotated. It is in the render loop already. Thanks for th…