Updating CollisionShape's

[Graham King]

I have a CollisionShape constructed using SetTriangleMesh().  If the models mesh changes, I would like to update the CollisionShape mesh.  How could this be done?  Just calling SetTriangleMesh() again seems to have very strange effects...

- Gray

[Lasse Öörni]

This doesn't currently work as expected because the PhysicsWorld stores cached data for triangle meshes. I believe a function must be added to be able to invalidate the cached data.

[Graham King]

Ah, thanks for the warning.  

I fixed the problem I had by not caching vertex buffers which are marked as dynamic.  I sent a pull request just in case you want it.  If not, my patch will keep me going until your proper fix. ;)

- Gray

[Lasse Öörni]

Thanks, this is good to have as part of the solution as well. The rest is to handle model live reloads properly + allow manual invalidation of non-dynamic but still changing meshes.

[Graham King]

Awesome, thanks.