[ODE] setting body positions/orientations

[gl]

> I want to do that for networked game, so the question was whether all
> players should run in a lockstep (as fast as the slowest one), or can they
> be run individually, with sync from the server.

I haven't done this yet, but I would suggest a fixed timestep at the server.
The clients could receive periodic position/velocity information, and either
just interpolate them as they go, or use them to correct a client-side
simulation using variable or fixed timesteps
--
gl