[xVIP3Rx]

If the player is already inside a car, Then we can just check if the car he's inside matches with his cars and return what we need

pawn Код:

stock UpdateFuel_PrivateVehs(playerid)
{
    new ID = GetPlayerVehicleID(playerid);
    for(new i=0; i<MAX_PLAYER_CARS; i++)
    {
        if(ID == PlayerCar[playerid][i][CarID])
        {
            PlayerCar[playerid][i][pFuel] += 1;
            //PlayerCar[playerid][i][pFuel] -= 1; // Or whatever
        }
    }
}

stock GetPlayerVehicleFuel(playerid)
{
    new ID = GetPlayerVehicleID(playerid);
    for(new i=0; i<MAX_PLAYER_CARS; i++)
    {
        if(ID == PlayerCar[playerid][i][CarID])
        {
            PlayerCar[playerid][i][pFuel] += 1;
            //PlayerCar[playerid][i][pFuel] -= 1;
        }
    }
}

And If he isn't, But you know the vehicleid:

pawn Код:

stock GetVehicleFuel(playerid, vehicleid)
{
    for(new i=1; i<MAX_PLAYER_CARS; i++)
    {
        if(vehicleid == PlayerCar[playerid][i][CarID])
        {
            return PlayerCar[playerid][SlotID][pFuel]
        }
    }
    return 0;
}