[Pierre-Marie Baty]

There is the official Condition Zero bot, which uses directly the map data file to know about the walkable surfaces, but you must own Condition Zero to play it.

Other than that, there is RealBot WIP which auto-waypoints the map. It lets the player run around alone in the map for the first five minutes, and keeps track of his moves to build waypoint files.

My own bot which is not released yet uses a combination of both systems. But it's still far from being released, especially at the pace I am making it (I would need at least 2 hours of free time a day to make something productive, and I haven't them). Though I made some progress with their navigation last week.