How to create a customized joint？

[xuanyaoming]

Hi, thanks for your good work!

I'm trying to verify a reinforcement learning algorithm in a pymunk environment. But I found that almost all joints in pymunk are not moveable, which means I can't assign actions to them. Is there any way to modify the kinematic properties of joints during the simulation? For example. how to control the sliding speed for "Slide Joint" ?

If it's not possible to control the preset joints, how do I create my own customized joint in Python?