Function IsStationAvailable

src/rail_gui.cpp:87–95

* Check whether a station type can be build. * @return true if building is allowed. */

 * @return true if building is allowed.
 */
static bool IsStationAvailable(const StationSpec *statspec)
{
	if (statspec == nullptr || !statspec->callback_mask.Test(StationCallbackMask::Avail)) return true;

	uint16_t cb_res = GetStationCallback(CBID_STATION_AVAILABILITY, 0, 0, statspec, nullptr, INVALID_TILE);
	if (cb_res == CALLBACK_FAILED) return true;

	return Convert8bitBooleanCallback(statspec->grf_prop.grffile, CBID_STATION_AVAILABILITY, cb_res);
}

void CcPlaySound_CONSTRUCTION_RAIL(Commands, const CommandCost &result, TileIndex tile)
{