I want a DistanceJoint class that I can use with the existing World simulation to keep two rigid bodies…

I want a DistanceJoint class that I can use with the existing World simulation to keep two rigid bodies…: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). After I register both bodies and then register the joint with world.register(joint) , each world.update(delta)…