Function ViewportUpdateFollowSprite

src/openrct2/interface/Viewport.cpp:610–634

    }

    void ViewportUpdateFollowSprite(WindowBase* window)
    {
        if (!window->viewportTargetSprite.IsNull() && window->viewport != nullptr)
        {
            auto* sprite = getGameState().entities.GetEntity(window->viewportTargetSprite);
            if (sprite == nullptr)
            {
                return;
            }

            if (gLegacyScene != LegacyScene::titleSequence)
            {
                int32_t height = TileElementHeight({ sprite->x, sprite->y }) - 16;
                int32_t underground = sprite->z < height;
                ViewportSetUndergroundFlag(underground, window, window->viewport);
            }

            auto centreLoc = centre2dCoordinates(sprite->getLocation(), window->viewport);
            if (centreLoc.has_value())
            {
                window->savedViewPos = *centreLoc;
                ViewportMove(*centreLoc, window, window->viewport);
            }
        }
    }

    void ViewportUpdateSmartFollowEntity(WindowBase* window)
    {