Can i make the doors dont open to any of teams,or can i make a turret what will shoot in any team .I can make the neutrals (i know how to make it(maybe)) but will the shot in everybody ?

As far as I know neutrals will be shot by everyone, but I doubt they shoot back. You'll have to test that bit I guess.

is there a neutral, and a hostile team?

Yeah all teams under 0 , or upper 1 are neutral.You cant play them.But you can set an item to -1 team,or + 1.

Neutral teams attack both team 0 and 1

That's hardly neutral. I'd laugh if that's what the Swiss did.

'We are neutral. So we are going to kill ALL of you, indiscriminately. '

Rather the swiss said:
'We are neutral. So you can leave your stolen gold in our banks.' *cough*

I can't speak to its possibility, but the idea has merit. Having zones that an AI team patrols and protects would spice up scenes quite a bit.

I think if the actors played by Age of Empires rules (in that when a team came in proximity to one, they would defect to that team) that would also be cool. A pushover team, like having survivors who are desperate and willing to join any army that comes their way.

both of these work in a zombie context, if that's what you're getting at, grenade. A group of rebels who, after society's collapse, have formed their own nation and will do anything to defend it or small bands of survivors who will join you if it will offer them safety.

Did you saw what i said.I need dont opening doors for my Arena Scene where do i play with my friends.This isnt for the zombies mod.