[ricardo178]

Using a timer for the 30 minutes...

pawn Код:

On top of script
new TIMER_TruckJob[playerid];
new TruckTimer[playerid];

On the cmd add:

if(TruckTimer == 0)

Under on player enter checkpoint:

TIMER_TruckJob[playerid] = SetTimerEx("TruckJob", 30000, false, "i", playerid);
TruckTimer[playerid] = 1;

forward TruckJob(playerid);
public TruckJob(playerid)
{
    TruckTimer[playerid] = 0;
    KillTimer(TIMER_TuckJob[playerid]);
}