For this assignment, you must download the open source ODE Physics engine (and install it and compile it!). Then go to the users of ODE page, find a cool project which is Open Source, and download it too. Figure out a good mod for this project, implement it. Submit:

• Enough information so that the TA can get all the software
• A rationale for your mod
• A set of code diffs from the base code that represents what you did. Ideally, this would be done as a patch (available on Windows either natively or as part of Cygwin)

A difficult mod which may be just a few lines of code (as few as 10!), but which needs to be inserted deeply into the program's physics engine is worth as much as a large mod which just relies on the surface features of the program.