I know, i know, its impossible
but i wanted to know how was it actually possible in unity’s car tutorial:
http://unity3d.com/support/resources/tutorials/car-tutorial
the road collisions there are not convex, yet they are still colored in green like convex colliders
and they have a normal shape, the lines dont just go from normal to normal creating a squabbly shape, its organized, i wonder how can i do it with any other model(static, not moving), say a runway, because i have a very complicated object, and i can create a collision for it that wont eat my computer alive, but i dont want it to be convex, because there are spaces in the middle of the object that im supposed to be able to fly through…
Can you build the collision from multiple convex shells?
well, not for this particular model, the thing is that you can move a lot through it
imagine a donut, that you can move through it, because there is nothing in the middle, you cant use any convex collision because it will block that pathway, i just want to know how they did it in the car tutorial
it wasn’t even a prefab, i imported the FBX files directly, and the result was the same, they can collide with any other mesh collider, but they are not convex…
Maybe this can help:
http://forum.unity3d.com/threads/154361-Concave-Collider-RELEASED