Don't open debug menu if there is dialog window.

The modal dialog eats gui close event, which is quite annoying.
Also return event block as long as debug menu is opened.

src/utils/debug.cpp

@@ -34,6 +34,8 @@
 #include "graphics/sp/sp_shader.hpp"
 #include "graphics/sp/sp_texture_manager.hpp"
 #include "graphics/sp/sp_uniform_assigner.hpp"
+#include "guiengine/modaldialog.hpp"
+#include "guiengine/screen_keyboard.hpp"
 #include "guiengine/widgets/label_widget.hpp"
 #include "guiengine/widgets/text_box_widget.hpp"
 #include "items/powerup_manager.hpp"
@@ -873,6 +875,10 @@ bool onEvent(const SEvent &event)
 
     if (event.EventType == EET_MOUSE_INPUT_EVENT)
     {
+        if (GUIEngine::ModalDialog::isADialogActive() ||
+            GUIEngine::ScreenKeyboard::isActive())
+            return true;
+            
         // Create the menu (only one menu at a time)
         #ifdef ANDROID
         if (event.MouseInput.X < 30 && event.MouseInput.Y < 30 &&
@@ -1022,7 +1028,9 @@ bool onEvent(const SEvent &event)
             return false;
         }
     }
-    return true;    // continue event handling
+    
+    // continue event handling if menu is not opened
+    return !g_debug_menu_visible;    
 }   // onEvent
 
 // ----------------------------------------------------------------------------