How do I make NPCs come out of a room?

[ProfHappycat7]

Put simply, how do I make metrocops come out of the 2 rooms in a manner similar to the one shown below? (using hl2 hammer btw)
[IMG]http://i.imgur.com/iveBb13.png[/IMG]

[ProfHappycat7]

another question, how would i go about making them run to the point instead of walk (path_corner)
and not be hostile until they arrive

[editline]23rd November 2014[/editline]

oh and how to make them take cover or still go to the point even while hostile
sorry if this is too much to ask

[ProfHappycat7]

nvm, abandon thread

[ProfHappycat7]

thanks man!

[Dysprogue]

I would probably use an aiscripted_schedule (tiggered with a "StartSchedule" input)as you can set them to run to an info_target or a path_corner and you have a few options for interruption conditions ,on "general" once they see the player the npc's ai should take over. You should probably even be able to set the target to !player.

You can mark cover with hint nodes.

There are almost certainly better ways to do this but this is what I know of.