Function removeRoadModToTrack

src/OpenLoco/src/Vehicles/Routing.cpp:1530–1664

0x0047A8F0

    // 0x0047A8F0
    static bool removeRoadModToTrack(const LocationOfInterest& interest, const uint8_t flags, RoutingResults* results, ModSection modSelection, uint8_t roadObjectId, uint8_t roadModObjectIds, currency32_t& totalCost, CompanyId companyId)
    {
        // If not in single segment mode then we should add the reverse
        // direction of track to the results to prevent it being visited.
        // This is because track mods do not have directions so applying
        // to the reverse would do nothing (or worse double spend)
        if (results != nullptr)
        {
            LocationOfInterest reverseInterest = interest;
            reverseInterest.loc = interest.loc;
            const auto rad = interest.rad();
            auto& roadSize = World::TrackData::getUnkRoad(rad._data);
            reverseInterest.loc += roadSize.pos;
            if (roadSize.rotationEnd < 12)
            {
                reverseInterest.loc -= World::Pos3{ World::kRotationOffset[roadSize.rotationEnd], 0 };
            }
            reverseInterest.trackAndDirection ^= (1 << 2); // Reverse flag

            results->reachableLocs.tryAdd(reverseInterest);
        }

        auto* roadObj = ObjectManager::get<RoadObject>(roadObjectId);

        auto roadStart = interest.loc;
        const auto rad = interest.rad();
        if (rad.isReversed())
        {
            auto& roadSize = World::TrackData::getUnkRoad(rad._data);
            roadStart += roadSize.pos;
            if (roadSize.rotationEnd < 12)
            {
                roadStart -= World::Pos3{ World::kRotationOffset[roadSize.rotationEnd], 0 };
            }
        }

        for (auto& roadPiece : TrackData::getRoadPiece(rad.id()))
        {
            auto roadLoc = roadStart + World::Pos3{ Math::Vector::rotate(World::Pos2{ roadPiece.x, roadPiece.y }, rad.cardinalDirection()), 0 };
            roadLoc.z += roadPiece.z;

            auto tile = TileManager::get(roadLoc);
            World::RoadElement* elRoad = nullptr;
            for (auto& el : tile)
            {
                elRoad = el.as<World::RoadElement>();
                if (elRoad == nullptr)
                {
                    continue;
                }
                if (elRoad->baseHeight() != roadLoc.z)
                {
                    continue;
                }
                if (elRoad->rotation() != rad.cardinalDirection())
                {
                    continue;
                }