Method GetVariable

src/newgrf_station.cpp:271–410

virtual */

}

/* virtual */ uint32_t StationScopeResolver::GetVariable(uint8_t variable, [[maybe_unused]] uint32_t parameter, bool &available) const
{
	if (this->st == nullptr) {
		/* Station does not exist, so we're in a purchase list or the land slope check callback. */
		switch (variable) {
			case 0x40:
			case 0x41:
			case 0x46:
			case 0x47:
			case 0x49: return 0x2110000;        // Platforms, tracks & position
			case 0x42: return 0;                // Rail type (XXX Get current type from GUI?)
			case 0x43: return GetCompanyInfo(_current_company); // Station owner
			case 0x44: return 2;                // PBS status
			case 0x67: // Land info of nearby tile
				if (this->axis != INVALID_AXIS && this->tile != INVALID_TILE) {
					TileIndex tile = this->tile;
					if (parameter != 0) tile = GetNearbyTile(parameter, tile, true, this->axis); // only perform if it is required

					Slope tileh = GetTileSlope(tile);
					bool swap = (this->axis == AXIS_Y && HasBit(tileh, CORNER_W) != HasBit(tileh, CORNER_E));

					return GetNearbyTileInformation(tile, this->ro.grffile->grf_version >= 8) ^ (swap ? SLOPE_EW : 0);
				}
				break;

			case 0x7A: return GetBadgeVariableResult(*this->ro.grffile, this->statspec->badges, parameter);

			case 0xFA: return ClampTo<uint16_t>(TimerGameCalendar::date - CalendarTime::DAYS_TILL_ORIGINAL_BASE_YEAR); // Build date, clamped to a 16 bit value
		}

		available = false;
		return UINT_MAX;
	}

	switch (variable) {
		/* Calculated station variables */
		case 0x40:
			if (!this->cache.v40.has_value()) this->cache.v40 = GetPlatformInfoHelper(this->tile, false, false, false);
			return *this->cache.v40;

		case 0x41:
			if (!this->cache.v41.has_value()) this->cache.v41 = GetPlatformInfoHelper(this->tile, true,  false, false);
			return *this->cache.v41;

		case 0x42: return GetTerrainType(this->tile) | (GetReverseRailTypeTranslation(GetRailType(this->tile), this->statspec->grf_prop.grffile) << 8);
		case 0x43: return GetCompanyInfo(this->st->owner); // Station owner
		case 0x44: return HasStationReservation(this->tile) ? 7 : 4; // PBS status
		case 0x45:
			if (!this->cache.v45.has_value()) this->cache.v45 = GetRailContinuationInfo(this->tile);
			return *this->cache.v45;

		case 0x46:
			if (!this->cache.v46.has_value()) this->cache.v46 = GetPlatformInfoHelper(this->tile, false, false, true);
			return *this->cache.v46;

		case 0x47:
			if (!this->cache.v47.has_value()) this->cache.v47 = GetPlatformInfoHelper(this->tile, true,  false, true);
			return *this->cache.v47;