Function updateLevelCrossingAnimation

src/OpenLoco/src/Map/RoadElement.cpp:126–194

0x00479413

    // 0x00479413
    bool updateLevelCrossingAnimation(const Animation& anim)
    {
        auto tile = TileManager::get(anim.pos);
        bool shouldInvalidate = false;
        bool hasAnimation = false;

        // It's possible to have multiple level crossing elements on the same tile/baseZ
        // this happens if you have tram tracks on road on track.
        for (auto& el : tile)
        {
            auto* elRoad = el.as<RoadElement>();
            if (elRoad == nullptr)
            {
                continue;
            }
            if (elRoad->baseZ() != anim.baseZ)
            {
                continue;
            }
            if (!elRoad->hasLevelCrossing())
            {
                continue;
            }

            const auto* levelCrossingObj = ObjectManager::get<LevelCrossingObject>(elRoad->levelCrossingObjectId());

            if (ScenarioManager::getScenarioTicks() & levelCrossingObj->var_0A)
            {
                hasAnimation = true;
            }
            else
            {
                shouldInvalidate = true;
                auto newFrame = elRoad->unk6l();
                if (elRoad->hasUnk7_10())
                {
                    if (newFrame != 15)
                    {
                        newFrame++;
                        if (newFrame > levelCrossingObj->closedFrames)
                        {
                            newFrame = 15;
                        }
                    }
                    hasAnimation = true;
                }
                else
                {
                    if (newFrame != 0)
                    {
                        newFrame--;
                        if (newFrame == 14)
                        {
                            newFrame = levelCrossingObj->closedFrames;
                        }
                        hasAnimation = true;
                    }
                    // Doesn't set hasAnimation = true on else branch!