Real-Time Physics Simulation Forum

You need to change the character controller to apply force to colliding rigid bodies, or at least that's how I did it. I think the right method to modify was recoverFromPenetration().

Hello, I was having problems with btBulletWorldImporter and importing triangle mesh shapes from .bullet files. I was using pretty much the same code that Erwin posted in this thread . However, anytime I entered a narrow phase collision with such a mesh, bullet would crash. After some investigation, ...

Hi, I also have a few comments about this: 1) One thing that has worked quite well for me was to put the documentation for public and protected methods and types in the header file, while putting documentation for private things into the C++ file. That keeps the header files cleaner and you can clea...

Hello, I just figured out that including bullet with some of my code breaks compilation. This seems to be due to bullet's btClock in btQuickprof.h which includes <windows.h> along with all its horrible defines. Our current fix for this issue is to simply disable profiling (which seems to be the solu...

Oh thanx! Actually, when I was investigating the recoverFromPenetration routine, I thought that it should actually do pretty much what you suggested already. However, I was never getting collisions between the two characters - so I figured it must have been filtered out somewhere else. And indeed I ...

Hello, I've set up a small application where two people can run around with a btKinematicCharacterController on a flat plane. I mostly followed the CharacterDemo while setting this up. Everything seems to work just fine, except that the two characters can walk right thru each other. From what I gath...

Could you please explain why do you think Bullet uses only "extrapolation"? Well, it's not technically correct to say it uses it exclusively, but it uses it exclusively to blend between frames, *if* you use the MotionState API. Otherwise it doesn't do any blending. After someone on IRC me...

Hello! Right now, bullet uses extrapolation exclusively to blend between actual simulation steps. However, some applications (such as mine) might require interpolation instead. While extrapolation is more responsive in a graphical environment, it can only be done on the position/orientation. Interpo...