[MP2]

I believe this will work:

pawn Код:

public OnPlayerUpdate(playerid)
{
    new model == GetVehicleModel(GetPlayerVehicleID(playerid));
    new keys, leftright, updown;
    GetPlayerKeys(playerid, keys, leftright, updown);
    if(model == FIRETRUCK_MODEL && keys & KEY_FIRE) return 0; // Prevent updates
    return 1;
}

But the player will be de-synced while holding KEY_FIRE.