Function updateTreeElement

src/OpenLoco/src/Map/TreeElement.cpp:140–348

0x004BD52B

    // 0x004BD52B
    bool updateTreeElement(TreeElement& elTree, const World::Pos2 loc)
    {
        if (elTree.unk7l() != 7)
        {
            elTree.setUnk7l(elTree.unk7l() + 1);
            invalidateTree(elTree, loc);
            return true;
        }

        auto* treeObj = ObjectManager::get<TreeObject>(elTree.treeObjectId());
        if (elTree.isDying())
        {
            const auto unk = kSeasonDeathSequence[elTree.season()];
            if (unk == 0xFFU)
            {
                invalidateTree(elTree, loc);
                TileManager::removeElement(reinterpret_cast<TileElement&>(elTree));
                return false;
            }
            else
            {
                elTree.setSeason(unk);
                elTree.setUnk7l(0);
                invalidateTree(elTree, loc);
                return true;
            }
        }

        if (!SceneManager::isEditorMode())
        {
            elTree.setUnk5h(elTree.unk5h() + 1);
            if (elTree.unk5h() != 0)
            {
                return true;
            }
        }

        const auto isBelowSnowLine = elTree.baseZ() - 4 <= Scenario::getCurrentSnowLine();
        if (isBelowSnowLine)
        {
            if (elTree.hasSnow())
            {
                elTree.setSnow(false);
                invalidateTree(elTree, loc);
            }
        }
        else
        {
            if (treeObj->hasFlags(TreeObjectFlags::hasSnowVariation))
            {
                if (!elTree.hasSnow())
                {
                    elTree.setSnow(true);
                    invalidateTree(elTree, loc);
                }
            }
            else
            {