physics layers

Hi,

I don’t found any doc about physics layers in unity.
I read in PhysX doc that it’s possible to create layers where object collide only with obnjects in the same layer.
And it’s not possible to add serveral rigidbodies / mesh collider to the same object.

Is there any way to bypass those two limitations ?

Thanks.

Physics layers don’t exist in Unity (potentially added in a later version than unity uses).

you can only have 1 rigidbody and collider per object but you can have multiple childs and add them there