Hi-- to simulate 2d physics I made a 'Plane2D' joint type for ODE: http://www.mathematik.uni-bielefeld.de/~pserocka/ODE-Plane2D/ For usage and installation see Plane2D.README, the code can be found in Plane2D.tar. Peter -- +++ GMX - Mail, Messaging & more http://www.gmx.net +++ Bitte lächeln! Fotogalerie online mit GMX ohne eigene Homepage!