I've read about non-penetration algorithms on this topic:
http://bulletphysics.org/Bullet/phpBB3/ ... p?f=4&t=20
I read that I can control the exact amount of allowed penetration.
How do I do it, or how do I prevent (or reduce) a object to penetrate on another on Bullet?
For example on "ConcaveDemo" where the user can throw boxes, some boxes penetrate the ground mesh at a shooting speed of 130.