are there co-op missions available in multiplayer like in operation flashpoint where there is enemy AI to fight against?
No but I wish they had bots like BF1942 even though they were really stupid. I would think with a patch the could put bots in but I guess not.
If you look on codfiles.com I'm pretty sure that theres a addbots for multiplayer, trouble is the AI bots are very stupid and either just stand in one position or just run in one direction so are very easy for target practice.
the bots in SP were decent, wouldn't the MP ones be the same?
No because the SP and MP are different, no one has transfered the SP bots to the MP yet.
Hate to dig up old threads... The bots in single player are scripted in the map itself. There isn't much AI involved short of "if you see the player start shooting and ducking for cover".
Yea all the enemies in the game are just scripted, and will either just lean out and shoot at you or just stay in one spot and shoot at you. Hl2 had better ai but not by much...im looking forward to S.T.AL.K.E.R : )