Robot Joints
The limbs of Descent's robots move, but the original robot models have no joints where the limbs are attached.
D2X-XL now adds joint parts to these models. The shape of a joint follows from the way its limb moves: a ball where the limb turns around several axes, a disc where it only swings around one. The joint parts take a matching texture from the robot.
The joints are added when the game builds a robot model, so the model files themselves remain unchanged, and only limbs that actually move get one. Robots that are replaced by high resolution models are not touched.

