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Collision Matrix not working as intended
Hi, I have an issue where a wheel collider would intersect with a mesh collider, I added a layer for both the wheels and car body, and set the wheels to not collide with the body or themselves, and the same for the car body, but it doesn't work as it should and they still intersect each other.
Answer by AlwaysSunny · Feb 28, 2015 at 05:38 AM
Gotta choose your words carefully here. From what you describe, changing your collision matrix so that 2 layers do not interact explicitly allows the objects to intersect. If you want them to collide, the collision matrix must allow interactions.
If you want them to neither collide, nor intersect, the nature of the simulated bodies must enforce this behavior in some other way. In a car suspension system, for instance, you'd limit the distance the suspension can travel such that the tire stays roughly in the wheel well so it doesn't clip through (intersect) the car body model.
That's what I have tried to do, but for a strange reason it still happens, although it doesn't affect the physics at all. I had even moved the wheels further down, but they still want to clip through the body, so I want the 2 objects to clip through each other, however the collision matrix makes no difference in this