A version with source code: http://kschnee.xepher.net/code/070530ShiningSeaSource.zip Regardless of the actual license info in those files, you have my permission to treat the code as GPL, if there's anything in there you actually want. The main "worldsim" thing (nutshell_basic.py) would be the most useful, if the core of the collision code (the physics of what happens when a collision happens) were improved.
Also, at http://kschnee.xepher.net/code/mission.py.txt I put up an experiment with a related idea. What actually works in there is a little game mechanic where characters help each other out with dice rolls.