Function paintDocks

src/OpenLoco/src/Paint/PaintDocks.cpp:52–103

0x0048B86E

    // 0x0048B86E
    void paintDocks(PaintSession& session, const World::StationElement& elStation)
    {
        session.setItemType(Ui::ViewportInteraction::InteractionItem::dock);

        auto* dockObj = ObjectManager::get<DockObject>(elStation.objectId());

        const auto companyColour = CompanyManager::getCompanyColour(elStation.owner());

        ImageId baseColour(0, companyColour);
        if (elStation.isGhost())
        {
            session.setItemType(Ui::ViewportInteraction::InteractionItem::noInteraction);
            baseColour = Gfx::applyGhostToImage(0);

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

        // Combine this with any imageId
        const auto rotation = (session.getRotation() + elStation.rotation()) & 0x3;

        const int16_t bbLengthZ = std::min(elStation.clearHeight() - elStation.baseHeight(), 128) - 2;

        const auto baseHeight = elStation.baseHeight();

        const auto variation = elStation.buildingType();

        // Note: Image offsets will change as you move up the building but bboffset/size does not
        const World::Pos3 imageOffset = kImageOffsetBase2x2 + World::Pos3{ 0, 0, baseHeight };
        const World::Pos3 bbOffset = kBBOffsetBase2x2 + World::Pos3{ 0, 0, baseHeight };
        const World::Pos3 bbSize = kBBSizeBase2x2 + World::Pos3{ 0, 0, bbLengthZ };

        session.resetLastPS(); // Odd...
        if (dockObj->hasFlags(DockObjectFlags::hasShadows))
        {
            if (session.getRenderTarget()->zoomLevel <= 1)
            {
                const auto shadowImageOffset = variation * 4 + dockObj->image + rotation + 1;
                const ImageId shadowImage = ImageId(shadowImageOffset).withTranslucency(Colours::getShadow(Colour::orange));

                session.addToPlotListAsChild(shadowImage, imageOffset, bbOffset, bbSize);
            }
        }

        const auto sequenceIndex = elStation.sequenceIndex();
        // Only the front of the 2x2 area will draw. Images are sized to overlap into the other tiles.
        if ((sequenceIndex ^ (1 << 1)) == ((-session.getRotation()) & 0x3))
        {
            paintDocksBuilding(session, elStation, *dockObj, imageOffset, bbOffset, bbSize, baseColour, rotation);
        }
        session.setSegmentsSupportHeight(SegmentFlags::all, 0xFFFF, 0);
        session.setGeneralSupportHeight(0xFFFF, 0); // TODO: Check if this works previously would not set slope to zero
    }
}