[CalvinC]

I believe you automatically attack it when there's 2+ players from the same team in another team's zone.
To set a players team, use:

pawn Код:

SetPlayerTeam(playerid, teamid);

Replace teamid with the teams in the topic.
Grove: 1
Ballas: 2
Vagos: 3

pawn Код:

public OnPlayerSpawn(playerid)
{
    switch(random(3))
    {
        case 0: SetPlayerTeam(playerid, 1);
        case 1: SetPlayerTeam(playerid, 2);
        case 2: SetPlayerTeam(playerid, 3);
    }
    return 1;
}

Example of it in a switch, making it spawn the player in a random team of the 3.