   Quake style AI
  I would like to know how to let robots travelling around in a 3D map (like Quake) - taking up items, chasing the player, etc.For 2D map it''s simple, but I just don''t know how it''s done in 3D.Could anyone give me more information on this? 
  Well, I think it is done the same was as in 2D but just extended into 3D.With my current system I use waypoints to flag stuff in a level for the AI. The AI goes to these based on priority of the waypoint and the state of the AI controller for that object (hunting, fleeing, sneaking etc.) ;AI Game Development describes thedevelopment of a bot for Quake II.  You cancheck their FEAR engine.   Kami no Itte ga ore ni zettai naru! 