[Jefff]

pawn Код:

IsAllOk(playerid, vehicleid)
{
    if(vehicleid == 0 || !IsPlayerInVehicle(playerid, vehicleid)) return 0;
    if(GetPlayerState(playerid) != PLAYER_STATE_DRIVER) return 0;
    if(!IsTrailerAttachedToVehicle(vehicleid)) return 0;
    return 1;
}

pawn Код:

if(IsAllOk(playerid, GetPlayerVehicleID(playerid)))
{
// player is in vehicleid, driving and got attached trailer
}