Function TruncateCargo

src/station_cmd.cpp:3951–3967

* Truncate the cargo by a specific amount. * @param cs The type of cargo to perform the truncation for. * @param ge The goods entry, of the station, to truncate. * @param amount The amount to truncate the cargo by. */

 * @param amount The amount to truncate the cargo by.
 */
static void TruncateCargo(const CargoSpec *cs, GoodsEntry *ge, uint amount = UINT_MAX)
{
	/* If truncating also punish the source stations' ratings to
	 * decrease the flow of incoming cargo. */

	if (!ge->HasData()) return;

	StationCargoAmountMap waiting_per_source;
	ge->GetData().cargo.Truncate(amount, &waiting_per_source);
	for (StationCargoAmountMap::iterator i(waiting_per_source.begin()); i != waiting_per_source.end(); ++i) {
		Station *source_station = Station::GetIfValid(i->first);
		if (source_station == nullptr) continue;

		GoodsEntry &source_ge = source_station->goods[cs->Index()];
		source_ge.max_waiting_cargo = std::max(source_ge.max_waiting_cargo, i->second);
	}
}

/**
 * Periodic update of a station's rating.