[zSuYaNw]

Tente assim:

pawn Код:

stock GetEmptyCarEvent()
{
    static Percorrer;
    for(; Percorrer != MaxNCarro; ++Percorrer){
        if(!isVehicleOcuppied(CarroEvento[Percorrer])){
            return CarroEvento[Percorrer];
        }
    }
    return -1;
}

stock isVehicleOcuppied(vehicleid)
{
    static MaxPlayers, Percorrer;
    for(Percorrer = 0,MaxPlayers = GetMaxPlayers(); Percorrer != MaxPlayers; ++Percorrer){
        if(IsPlayerInVehicle(Percorrer,vehicleid)){
            return true;
        }
    }
    return false;
}

pawn Код:

if(GetEmpytCarEvent() != -1)
{
    PutPlayerInVehicle(...);
}
else
{
    SendClientMessage(playerid, -1, "Nгo hб carros disponнveis");
}