Non convex Trigger - Unity5 limitation

Questions & Answers
1

Hi,

It’s not possible to create a trigger collider with a non convex mesh in Unity 5.

Is this limitation temporary and is there a workaround ?
Using compound meshes will be really annoying.

Thanks,

2

It’s not temporary; it was removed from PhysX, which is what Unity uses for 3D physics. You can use multiple convex meshes instead.

3

You can solve this limitation with different layers.
We just added a layer for concave triggers in which all concave triggers are normal mesh colliders (Without being triggers), and a convex collider that is a trigger with a rigidbody (In your player object probably). Then just set the layer collision mask to only collide with itself and you can probably achieve what you were trying to achieve.