Parenting a BulletVehicle's wheels to the chassis-BulletRigidBodyNode now works as expected. Previously doing this would make the wheels appear to be positioned one frame ahead of the chassis, because the wheel's position were synced before the chassis' position.
For more information see issue #250.
Closes#349
Bullet automatically interpolate most bodies for us (for example the "chassis"
of a BulletVehicle), but BulletVehicle-wheels must be manually interpolated by
calling 'updateWheelTransform()'. Otherwise they will slowly rubber-band
between their intended position and a position one frame ahead in time.
For more information see issue #250.
This problem occurs when movePointer is used to reset the mouse back to the center every frame, a very common way to implement mouselook on Windows (which has no relative mouse mode). Any movement between the last event loop run and the call to movePointer is destroyed, resulting in quite choppy mouselook in most implementations.
The solution is for getPointer to always return the latest mouse cursor position. This goes a long way but is not 100% perfect; see the discussion in #359 for other solutions.
Fixes#359
If a class inherits from ReferenceCount, it can be destructed by downcasting to ReferenceCount, so it should not be an obstacle to properly clean it up when such a class is returned from C++.
This issue comes up when a CycleData is returned via MemoryUsagePointers, which is not exposed so is wrapped as NodeReferenceCount instead, which has a protected destructor.
I think there was some confusion about how set_aux_rgba (and friends) worked; it seems the original intent was to toggle each individual buffer whereas it is actually interpreted as a count of how many of these buffers should be enabled. We should try to clarify the API and/or replace it with something better as soon as possible.
If any code is relying on this, please let me know and I will add it back. It appears to be redundant, though, since one can access DtoolClassDict directly.
Symbol kept around temporarily in order to keep ABI compatibility for a short while as people may not update their interrogate and Panda in sync, but it can soon be removed.
