Function generateNumDisplayFrames

src/OpenLoco/src/Vehicles/OrderManager.cpp:341–426

0x00470824

    // 0x00470824
    void generateNumDisplayFrames(Vehicles::VehicleHead* head)
    {
        World::setMapSelectionFlags(World::MapSelectionFlags::unk_04);
        Gfx::invalidateScreen();
        _displayFrames.clear();
        auto orders = Vehicles::OrderRingView(head->orderTableOffset);
        uint8_t i = 0;
        for (auto& order : orders)
        {
            if (!order.hasFlags(Vehicles::OrderFlags::HasNumber))
            {
                continue;
            }
            NumDisplayFrame newFrame;
            newFrame.orderOffset = order.getOffset();

            auto lineNumber = 0;
            auto* stationOrder = order.as<Vehicles::OrderStation>();
            auto* waypointOrder = order.as<Vehicles::OrderRouteWaypoint>();
            if (stationOrder != nullptr)
            {
                lineNumber++; // station labels start on line 0 so add 1 for the number

                const auto stationId = stationOrder->getStation();
                for (auto innerOrder = orders.begin(); innerOrder->getOffset() != order.getOffset(); ++innerOrder)
                {
                    auto* innerStationOrder = innerOrder->as<Vehicles::OrderStation>();
                    if (innerStationOrder == nullptr)
                    {
                        continue;
                    }
                    if (stationId == innerStationOrder->getStation())
                    {
                        lineNumber++;
                    }
                }
            }
            else if (waypointOrder != nullptr)
            {
                const auto rawOrder = order.getRaw();
                for (auto innerOrder = orders.begin(); innerOrder->getOffset() != order.getOffset(); ++innerOrder)
                {
                    if (rawOrder == innerOrder->getRaw())
                    {
                        lineNumber++;
                    }
                }
            }

            // For some reason save only a byte when this could in theory be larger
            newFrame.lineNumber = static_cast<uint8_t>(lineNumber);
            _displayFrames.push_back(newFrame);
            i++;
        }

        i = 1;
        for (auto& unk : _displayFrames)
        {