Function MaybeInstallFallbackCargoLabel

src/newgrf/newgrf_act0_cargo.cpp:26–40

* Install cargo label in a fallback cargo list, if a NewGRF-defined cargo list is not present. * This allows this NewGRF to use its self-defined cargo types without needing an explicit translation table. * @param id ID of the cargo. * @param last ID of the last cargo being set up. * @param label Label to install. */

 * @param label Label to install.
 */
static void MaybeInstallFallbackCargoLabel(uint id, uint last, CargoLabel label)
{
	if (_cur_gps.grffile->cargo_list.empty()) {
		/* Cargo translation table isn't configured yet, assume it won't be and configure the cargo list as a fallback list. */
		auto default_cargo_list = GetCargoTranslationTable(*_cur_gps.grffile);
		_cur_gps.grffile->cargo_list.assign(default_cargo_list.begin(), default_cargo_list.end());
		_cur_gps.grffile->cargo_list_is_fallback = true;
	}

	if (_cur_gps.grffile->cargo_list_is_fallback) {
		/* Automatically fill fallback cargo list with the defined label, resizing as needed. */
		if (_cur_gps.grffile->cargo_list.size() < last) _cur_gps.grffile->cargo_list.resize(last, CT_INVALID);
		_cur_gps.grffile->cargo_list[id] = label;
	}
}

/**
 * Define properties for cargoes