Function createRoadMod

src/OpenLoco/src/GameCommands/Road/CreateRoadMod.cpp:50–77

0x0047A21E

    // 0x0047A21E
    static uint32_t createRoadMod(const RoadModsPlacementArgs& args, uint8_t flags)
    {
        auto* roadEl = getRoadElement(args);
        if (roadEl == nullptr || !sub_431E6A(roadEl->owner(), reinterpret_cast<const World::TileElement*>(roadEl)))
        {
            return kFailure;
        }

        auto& piece = World::TrackData::getRoadPiece(args.roadId)[roadEl->sequenceIndex()];
        const auto roadLoc = World::Pos3{ Math::Vector::rotate(World::Pos2{ piece.x, piece.y }, args.rotation), piece.z };

        // 0x0047A34C
        const auto firstTilePos = args.pos - roadLoc;
        const auto rad = Vehicles::TrackAndDirection::_RoadAndDirection(roadEl->roadId(), roadEl->rotation());

        auto result = Vehicles::applyRoadModsToTrackNetwork(firstTilePos, rad, roadEl->owner(), args.roadObjType, flags, args.modSection, args.type);
        if (result.allPlacementsFailed)
        {
            setErrorText(StringIds::track_road_unsuitable);
            return kFailure;
        }
        if (result.networkTooComplex && (flags & Flags::apply) && !(flags & Flags::ghost))
        {
            Ui::Windows::Error::open(StringIds::null, StringIds::too_much_track_some_track_not_upgraded);
        }

        return result.cost;
    }

    void createRoadMod(registers& regs)
    {