This is a very basic map showing two types of security camera activity. To answer a post that asked "How do I create surveillance cameras which after seeing you for a few seconds, trigger something eg: alarm, monstermaker?
Also, is it possible to make them swivel realistically (A few degrees at a time)?"
Cam 1 is a func_door which swivels. Cam 2 is a func_tank that follows the player. The cameras are ugly, I know.
U can on the other hand make it appear that the cameras have seen u by placing trigger once where the cameras would view. When the player walked inot the trigger once it would trigger it and whatever it was set to trigger. Hay-presto
Anyhow I'm sure there is a way to make a timedelay but I can't think of it right now