Function ViewportFindFromPoint

src/openrct2/interface/Viewport.cpp:1782–1797

    }

    Viewport* ViewportFindFromPoint(const ScreenCoordsXY& screenCoords)
    {
        auto* windowMgr = Ui::GetWindowManager();
        WindowBase* w = windowMgr->FindFromPoint(screenCoords);
        if (w == nullptr)
            return nullptr;

        Viewport* viewport = w->viewport;
        if (viewport == nullptr)
            return nullptr;

        if (viewport->ContainsScreen(screenCoords))
            return viewport;

        return nullptr;
    }

    /**
     *