disable windows on startup when --new-game is used

apps/openmw/engine.cpp

@@ -209,7 +209,7 @@ void OMW::Engine::go()
     MWScript::registerExtensions (mExtensions);
 
     mEnvironment.mWindowManager = new MWGui::WindowManager(mGuiManager->getGui(), mEnvironment,
-        mExtensions);
+        mExtensions, mNewGame);
 
     mEnvironment.mSoundManager = new MWSound::SoundManager;
 

apps/openmw/mwgui/window_manager.cpp

@@ -8,8 +8,8 @@
 using namespace MWGui;
 
 WindowManager::WindowManager(MyGUI::Gui *_gui, MWWorld::Environment& environment,
-    const Compiler::Extensions& extensions)
+    const Compiler::Extensions& extensions, bool newGame)
-  : gui(_gui), mode(GM_Game), shown(GW_ALL), allowed(GW_ALL)
+  : gui(_gui), mode(GM_Game), shown(GW_ALL), allowed(newGame ? GW_None : GW_ALL)
 {
   // Get size info from the Gui object
   assert(gui);

apps/openmw/mwgui/window_manager.hpp

@@ -102,11 +102,14 @@ namespace MWGui
   public:
     /// The constructor needs the main Gui object
     WindowManager(MyGUI::Gui *_gui, MWWorld::Environment& environment,
-        const Compiler::Extensions& extensions);
+        const Compiler::Extensions& extensions, bool newGame);
     virtual ~WindowManager();
 
     void setMode(GuiMode newMode)
     {
+      if (newMode==GM_Inventory && allowed==GW_None)
+        return;
+        
       mode = newMode;
       updateVisible();
     }