Function paintTrack

src/OpenLoco/src/Paint/PaintTrack.cpp:239–352

0x0049B6BF

    // 0x0049B6BF
    void paintTrack(PaintSession& session, const World::TrackElement& elTrack)
    {
        if (elTrack.isAiAllocated() && !showAiPlanningGhosts())
        {
            return;
        }
        if (elTrack.isGhost()
            && CompanyManager::getSecondaryPlayerId() != CompanyId::null
            && CompanyManager::getSecondaryPlayerId() == elTrack.owner())
        {
            return;
        }
        const auto height = elTrack.baseZ() * 4;
        const auto rotation = (session.getRotation() + elTrack.rotation()) & 0x3;
        if (((session.getViewFlags() & Ui::ViewportFlags::height_marks_on_tracks_roads) != Ui::ViewportFlags::none)
            && session.getRenderTarget()->zoomLevel == 0)
        {
            const bool isLast = elTrack.isFlag6();
            const bool isFirstTile = elTrack.sequenceIndex() == 0;
            if (elTrack.sequenceIndex() == 0 || isLast)
            {
                session.setItemType(Ui::ViewportInteraction::InteractionItem::noInteraction);
                const auto markerHeight = height + getTrackDecorationHeightOffset(isFirstTile, elTrack.trackId()) + 8;
                const auto imageId = ImageId{ getHeightMarkerImage(markerHeight), Colour::blue };
                const World::Pos3 offset(16, 16, markerHeight);
                const World::Pos3 bbOffset(1000, 1000, 1087);
                const World::Pos3 bbSize(1, 1, 0);
                session.addToPlotListAsParent(imageId, offset, bbOffset, bbSize);
            }
        }

        session.setItemType(Ui::ViewportInteraction::InteractionItem::track);
        const auto* trackObj = ObjectManager::get<TrackObject>(elTrack.trackObjectId());

        // This is an ImageId but it has no image index set!
        auto baseTrackImageColour = ImageId(0, CompanyManager::getCompanyColour(elTrack.owner()));

        if (elTrack.isGhost() || elTrack.isAiAllocated())
        {
            session.setItemType(Ui::ViewportInteraction::InteractionItem::noInteraction);
            baseTrackImageColour = Gfx::applyGhostToImage(0);

            // TODO: apply company colour if playerCompanyID != elTrack.owner()?
        }

        TrackPaintCommon trackSession{ baseTrackImageColour.withIndex(trackObj->image), baseTrackImageColour, trackObj->tunnel };

        if (!session.skipTrackRoadSurfaces())
        {
            if (elTrack.trackId() < kTrackPaintParts.size() && elTrack.sequenceIndex() < kTrackPaintParts[elTrack.trackId()].size())
            {
                auto& parts = kTrackPaintParts[elTrack.trackId()];
                auto& tpp = parts[elTrack.sequenceIndex()];
                paintTrackPP(session, elTrack, trackSession, rotation, tpp);
            }
            else
            {
                assert(false);