Thanks!
It's currently linux only, but all libraries are portable, so it's not too difficult to port.
The code is in a git repository:
git clone git://git.code.sf.net/p/open2d/git.git open2d
In order to compile it you need to install some libraries:
sudo apt-get install libsfml-dev build-essential libglu-dev libgtkglextmm-x11-1.2-dev libgtkglext1-dev libgtkmm-2.4-dev liblua5.1-0-dev (if you are in ubuntu)
and enter this commands:
sudo ln -s /usr/include/lua5.1/{lauxlib.h,luaconf.h,lua.h,lua.hpp,lualib.h} /usr/include/
sudo ln -s /usr/lib/liblua5.1.a /usr/lib/liblua.a
which will link the lua libraries so you can compile and run it.
It's currently in spanish but i'll translate it soon.
Thanks for your interest.
Feedback is really appreciated.