Function TownGenerateCargo

src/town_cmd.cpp:533–550

* Generate cargo for a house, scaled by the current economy scale. * @param t The current town. * @param ct Type of cargo to generate, usually CT_PASSENGERS or CT_MAIL. * @param amount The number of cargo units. * @param stations Available stations for this house. * @param affected_by_recession Is this cargo halved during recessions? */

 * @param affected_by_recession Is this cargo halved during recessions?
 */
static void TownGenerateCargo(Town *t, CargoType cargo, uint amount, StationFinder &stations, bool affected_by_recession)
{
	if (amount == 0) return;

	/* All production is halved during a recession (except for NewGRF-supplied town cargo). */
	if (affected_by_recession && EconomyIsInRecession()) {
		amount = (amount + 1) >> 1;
	}

	/* Scale by cargo scale setting. */
	amount = ScaleByCargoScale(amount, true);
	if (amount == 0) return;

	/* Actually generate cargo and update town statistics. */
	auto &supplied = t->GetOrCreateCargoSupplied(cargo);
	supplied.history[THIS_MONTH].production += amount;
	supplied.history[THIS_MONTH].transported += MoveGoodsToStation(cargo, amount, {t->index, SourceType::Town}, stations.GetStations());;
}

/**
 * Generate cargo for a house using the original algorithm.