**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007 Chris Moore
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
synfig::Angle split_angle;
synfig::Vector gravity;
synfig::Real velocity;
+ synfig::Real perp_velocity;
synfig::Real step;
synfig::Real mass;
synfig::Real drag;