[jasperschellekens]

You can also create some kind of pickup where a player can go on and off duty.
When the player goes on duty, set an array to 1 for example.
You can then loop trough players and send a message to whoever is on fire fighter duty.

PHP код:

new FireFighterDuty[MAX_PLAYERS];
    for(new i=0; i<GetMaxPlayers(); i++)
    {
        if(FireFighterDuty[i] == 1)
        {
            SetPlayerCheckpoint(i, 0 ,0 ,0 , 1);
            SendClientMessage(i, -1, "A fire has been reported! A waypoint has been set on your map.");
        }
    } 


So whenever a player goes on fire duty, this is what you need to do with the value of the array.

PHP код:

FireFighterDuty[playerid] = 1; 


And when the player turns off the duty

PHP код:

FireFighterDuty[playerid] = 0;