I have rigged a dump truck mesh and wish to fill it with simulated rocks. However, setting the bed to kinematic seems to cause my vehicle to drive sideways, and steering becomes nearly impossible. Furthermore, while the bed completely ignores the static environment in kinematic mode, I cannot simulate it without breaking my existing implementation for unloading the truck. How can I set up my dump truck to react with both simulated actors and the static environment while still permitting manual bone rotations?
I solved this by adding a box to the root body that encompassed the entire bed. Also, disabling collision with all other physics bodies on the bed greatly improved stability.