Method GetVariable

src/newgrf_roadstop.cpp:72–219

}

uint32_t RoadStopScopeResolver::GetVariable(uint8_t variable, [[maybe_unused]] uint32_t parameter, bool &available) const
{
	auto get_road_type_variable = [&](RoadTramType rtt) -> uint32_t {
		RoadType rt;
		if (this->tile == INVALID_TILE) {
			rt = (GetRoadTramType(this->roadtype) == rtt) ? this->roadtype : INVALID_ROADTYPE;
		} else {
			rt = GetRoadType(this->tile, rtt);
		}
		if (rt == INVALID_ROADTYPE) {
			return 0xFFFFFFFF;
		} else {
			return GetReverseRoadTypeTranslation(rt, this->roadstopspec->grf_prop.grffile);
		}
	};

	switch (variable) {
		/* View/rotation */
		case 0x40: return this->view;

		/* Stop type: 0: bus, 1: truck, 2: waypoint */
		case 0x41:
			if (this->type == StationType::Bus) return 0;
			if (this->type == StationType::Truck) return 1;
			return 2;

		/* Terrain type */
		case 0x42: return this->tile == INVALID_TILE ? 0 : (GetTileSlope(this->tile) << 8 | GetTerrainType(this->tile, TCX_NORMAL));

		/* Road type */
		case 0x43: return get_road_type_variable(RTT_ROAD);

		/* Tram type */
		case 0x44: return get_road_type_variable(RTT_TRAM);

		/* Town zone and Manhattan distance of closest town */
		case 0x45: {
			if (this->tile == INVALID_TILE) return to_underlying(HouseZone::TownEdge) << 16;
			const Town *t = (this->st == nullptr) ? ClosestTownFromTile(this->tile, UINT_MAX) : this->st->town;
			return t != nullptr ? (to_underlying(GetTownRadiusGroup(t, this->tile)) << 16 | ClampTo<uint16_t>(DistanceManhattan(this->tile, t->xy))) : to_underlying(HouseZone::TownEdge) << 16;
		}

		/* Get square of Euclidean distance of closest town */
		case 0x46: {
			if (this->tile == INVALID_TILE) return 0;
			const Town *t = (this->st == nullptr) ? ClosestTownFromTile(this->tile, UINT_MAX) : this->st->town;
			return t != nullptr ? DistanceSquare(this->tile, t->xy) : 0;
		}

		/* Company information */
		case 0x47: return GetCompanyInfo(this->st == nullptr ? _current_company : this->st->owner);

		/* Animation frame */
		case 0x49: return this->tile == INVALID_TILE ? 0 : this->st->GetRoadStopAnimationFrame(this->tile);

		/* Misc info */
		case 0x50: {
			uint32_t result = 0;