Currently, a possible way is to do it through our plugin interface.
Of course, to support simulation well, a constraint system is problem needed. At the engine level, LibreCAD currently has a linear algebra sytem, a quadratic system, and a projective geometry system. Need to study for a proper design of a constraint solver based on our own existing solvers.
ginghis wrote
If I draw a mechanism in librecad is there a facility to show this mechanism moving? If so, librecad could enable simulations of mechanisms. That would be unique.