Mesh collider issues?

[xxjetterxx]

Hi, guys. I'm currently developing a mod, but I can't quite seem to get mesh colliders to work in Unity. When I try to give the mesh a collider, it doesn't do anything. Nothing happens if i change and of the options either. However, if I try to use, say, a capsule collider, it works completely fine. Any idea why this is happening?

thanks.

[Justin Kerbice]

It looks like collider made with mesh themselves doesn't appears like convex colliders (in light green, as well as basic ones like cube or sphere), but they are there in game.

Try it with something simple.

Despite Unity reference is very unclear about collider (according to it, only convex collider can interact with others collider):

Mesh Colliders cannot collide with each other unless they are marked as Convex. Therefore, they are most useful for background objects like environment geometry.

Convex Mesh Colliders must be fewer than 255 triangles.

The highlighted part doesn't make so much sense, what is hte purpose of a collider otherwise ?

Quoted from the doc.