I want to introduce bulletSOP 2.0, which is new version of bullet implementation inside Houdini for stunning rigid body simulations!
Its a lot of faster than "factory" implementation of bullet, but at the same time Its very open to customizing effects.
check Sneak Peek for more information: https://vimeo.com/57193837
I also want to ask about help with this problem: http://www.bulletphysics.org/Bullet/php ... f=9&t=8625
Its last feature(concave+deform bodies), that is missing to production ready version. I really appreciate any help

Regards,
Milan Suk