The solution to this problem cannot be actually done with realistic (copying reality) controls without putting way too much physics at work. A tank has wheels but the traction is done with the, well, tracks (or treads). This part is the trickiest to achieve. Hence, I opted for a simpler solution: use wheels and wheel steering along with custom keys to turn on spot while using UV animation for tracks and simple rotation transforms for wheels matching the speed (actually, the parent's velocity) for a realistic effect. It's a bit of work to set up all wheels (20 for most tanks) and in particular bump/diffuse UV animation needs some digging in the documentation.
↧