I used c_content to make AI, works great, and yep, I work with level blocks only. but turning bots pan till c_content touches something is not that good way, better make bot strafe or even better to make a counter, so when one of the contents touches anything, and bots pan turns, just switch on the counter, and till counter will be equal to some number (60 for example), bot will not turn to player, that way it'll looks more realistic.