Function paintTree

src/OpenLoco/src/Paint/PaintTree.cpp:26–107

0x004BAEDA

    // 0x004BAEDA
    void paintTree(PaintSession& session, const World::TreeElement& elTree)
    {
        session.setItemType(InteractionItem::tree);

        const auto* treeObj = ObjectManager::get<TreeObject>(elTree.treeObjectId());
        const uint8_t viewableRotation = (session.getRotation() + elTree.rotation()) & 0x3;
        const uint32_t treeFrameNum = (viewableRotation % treeObj->numRotations) + elTree.growth() * treeObj->numRotations;

        uint8_t season = elTree.season();
        bool hasImage2 = false;
        uint32_t imageIndex2 = 0;
        uint8_t noiseMask = 0;
        if (elTree.unk7l() != 7)
        {
            hasImage2 = true;

            season = _50076A[season];
            noiseMask = elTree.unk7l() + 1;
            auto image2Season = elTree.season();

            if (_500770[image2Season])
            {
                image2Season = season;
                season = elTree.season();
                noiseMask = 8 - noiseMask;
            }

            auto imageId = elTree.hasSnow() ? treeObj->snowSprites[image2Season] : treeObj->sprites[image2Season];
            imageIndex2 = treeFrameNum + imageId;
        }

        const auto seasonBaseImageIndex = elTree.hasSnow() ? treeObj->snowSprites[season] : treeObj->sprites[season];

        std::optional<ImageId> shadowImageId = std::nullopt;
        if (treeObj->hasFlags(TreeObjectFlags::hasShadow))
        {
            shadowImageId = ImageId{ treeObj->shadowImageOffset + treeFrameNum + seasonBaseImageIndex }.withTranslucency(ExtColour::unk32);
        }

        const uint8_t quadrant = (elTree.quadrant() + session.getRotation()) % 4;
        const auto imageOffset = World::Pos3(kTreeQuadrantOffset[quadrant].x, kTreeQuadrantOffset[quadrant].y, elTree.baseHeight());

        const int16_t boundBoxSizeZ = std::min(elTree.clearZ() - elTree.baseZ(), 32) * World::kSmallZStep - 3;

        const uint32_t imageIndex1 = treeFrameNum + seasonBaseImageIndex;
        ImageId imageId1{};
        ImageId imageId2{};

        if (elTree.isGhost())
        {
            session.setItemType(InteractionItem::noInteraction);
            imageId2 = Gfx::applyGhostToImage(imageIndex2);
            imageId1 = Gfx::applyGhostToImage(imageIndex1);
        }
        else if (treeObj->colours != 0)
        {
            // No vanilla object has this property set
            const auto colour = static_cast<Colour>(elTree.colour());