koobas.hobune.stream
CharacterController.skinWidth and vertical displacement
I'm mostly unfamiliar with CharacterController, so I was wondering if anyone here could enlighten me.
Characters using CharacterController are floating above the ground at the height of SkinWidth. From the Unity documentation, I wouldn't have expected that - it reads:
"Two colliders can penetrate each other as deep as their Skin Width."
So I'd interpret it as quite the opposite - the leeway that it has before repelling.
Other pages referring to the parameter on PhysX confirm that
"The skin allows the objects to penetrate each other, at the width of the skin. "
So I'm wondering why I would get it to actually repel from the ground (or box/plane collider below it) at that height. The behavior is the same on 2.6 and the 3 betas, so I imagine this is expected, but can anyone elaborate?
EDIT: Yes, the skin width will add a buffer around the character's collider.
If your character is standing still on a platform, the buffer won't be penetrating the platform's collider. This will cause the character to "float" if you haven't adjusted the collider height to account for skin width.
The skin width only comes into play when motion results in collider penetration. It doesn't mean the colliders will always penetrate to that depth.
Hi Ehren. Like you said, I expected the skin widdth only to come into play when dealing with collider penetration, as a sort of leeway, which is why I was a bit surprised by it also causing a displacement from what Unity displays. Indeed, I ended up accounting for the distance in the collider height.
Is there an example of WHY you need skin width please to get a better understanding of why you'd need it at all? Thanks.
