UDK/PhysX: Ball jumps at edges

Coding
1

A ball primitive jumps every time when it passes an
edge: edge of a collision primitive or a triangle in case
of a per poly collision hull.

I’m using UDK and tried the following things already,
none of them helped:

  • 0 restitution, 0 friction physical material on the static
    geometry.

  • Per poly or DOP collision.

  • Continuous collision detection is enabled on the ball.

  • Overlapping collision.

  • Connector meshes on the boundaries of objects,
    creating a bridge over the threshold.

I ran out of ideas. :\

2

I believe this subject has come up a few times on the UDN’s Unprog3 email list (or something similar).

I’d have to go back and look through my old emails if you can’t search the archive, but I believe one of the solutions was to add an additional rigid body sphere mesh around your ball that’s bigger than the skeleton. That might work?

3

Thanks Strobel, I’ll try to get my hands on an Unprog3
archive.

Since the first post I discovered that low speeds and/or
high friction surfaces help. Almost like miniscule
penetrations cause the sudden stops. Now I’m reading
through the PhysX SDK docs for clues.