[AdrianG]

Use SetPlayerTeam in order to put someone in a team;
Use in

PHP код:

public OnPlayerWeaponShot(playerid, weaponid, hittype, hitid, Float:fX, Float:fY, Float:fZ)
{
     if(hittype==BULLET_HIT_TYPE_PLAYER) //hit a player
               if(GetPlayerTeam(playerid)==GetPlayerTeam(hitid)) //the same team
                           return 0;       // block the shot
     return 1;
}