Function ShowConstructionRights

src/openrct2/interface/Viewport.cpp:1204–1219

* * rct2: 0x00664EDD */

     *  rct2: 0x00664EDD
     */
    void ShowConstructionRights()
    {
        if (gShowConstructionRightsRefCount == 0)
        {
            WindowBase* mainWindow = WindowGetMain();
            if (mainWindow != nullptr)
            {
                if (!(mainWindow->viewport->flags & VIEWPORT_FLAG_CONSTRUCTION_RIGHTS))
                {
                    mainWindow->viewport->flags |= VIEWPORT_FLAG_CONSTRUCTION_RIGHTS;
                    mainWindow->invalidate();
                }
            }
        }
        gShowConstructionRightsRefCount++;
    }

    /**
     *