Keep in mind that the current source code of PandAI is in Panda3D CVS:
panda3d.cvs.sourceforge.net/view … rc/pandai/
This is the most up-to-date version of the code.
As you can see, the files carry the BSD license as with the rest of Panda.
The coding style is pretty horrible, and doesn’t adhere to the coding guidelines that the rest of Panda adheres to. It’d be great if you could not follow the example of the existing AI code when you add new features. 