Game AI

I'm doing a presentation for my programming class about Game AI. I'm trying to find some tools specifically implemented in programming for the purpose of programming Game AI.

All I've found thus far is Finite State Machines.

Anyone care to link me to some reading?

CS is interdisciplinary. and at the core is heavy in EE and Math. I would consider it a science.  It's not man-made. everything inside and out already new it could do that. we are simply discovering.