Real-Time Physics Simulation Forum

So in our game I use vertex arrays to render the level, and also use the same data structure to pass to the btBvhTriangleMesh object. I use the btTriangleIndexVertexArray to initialize it right now. One thing about rendering with vertex arrays is that I have to have multiple sets of vertex positions...

Is there a reason why the default constructor for things like btVector3 doesn't initialize it to (0,0,0). I've written vector classes before and my implementations always had the constructor look something like this: Vector3(float x = 0.0f, float y = 0.0f, float z = 0.0f) so it would by default init...

Yeah that looks about right.

I really wish the documentation in bullet physics was better. It's pretty much nonexistant in the API docs.

I'm pretty confused about the btEquals function. This is the code from btScalar.h. SIMD_FORCE_INLINE bool btEqual(btScalar a, btScalar eps) { return (((a) <= eps) && !((a) < -eps)); } I can't find any documentation on this function. All I know is it's called btEquals. I first thought it comp...

Is it normal for the ConvexSweepTest function to return distances that overpenetrate a little bit? If so what are some smart ways to deal with it? I'm writing some platform character movement code using a kinematic body. Basically think Soldat(If you've played that game) or better yet Booster Troope...

I'm using a capsule as a collision shape for my game character. I thought it would be pretty straight forward to just on the fly switch between two capsules which are different heights. I can't seem to find a function that allows to set a collision shape on the fly and can't find anything on Google....

I've looked at tutorials on doing character movement with bullet and have seen many different techniques. Basically this always seems like a problem for people new to bullet. I successfully created a static triangle mesh world that is synchronized with the drawn polygons. I also added random boxes t...