Show explainatory message when some player tries to perform an action that is reserved to the game master. Hopefully this will help reduce confusion

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@5080 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/guiengine/engine.cpp

@@ -66,6 +66,12 @@ namespace GUIEngine
         return dt;
     }
     
+    float masterOnlyMessageTime = 0.0f;
+    void showMasterOnlyString()
+    {
+        masterOnlyMessageTime = 5.0f;
+    }
+    
     Widget* getFocusForPlayer(const int playerID)
     {
         assert(playerID >= 0);
@@ -307,6 +313,24 @@ void render(float elapsed_time)
         else                                World::getWorld()->getRaceGUI()->renderGlobal(elapsed_time);
     }
     
+    
+    if (masterOnlyMessageTime > 0)
+    {
+        masterOnlyMessageTime -= dt;
+        
+        core::dimension2d<u32> screen_size = irr_driver->getFrameSize();
+        const int text_height = getFontHeight() + 20;
+        const int y_from = screen_size.Height - text_height;
+        
+        //I18N: message shown when a player that isn't game master tries to modify options that
+        //I18N: only the game master is allowed to
+        Private::g_font->draw(_("Only the Game Master may act at this point!"),
+                              core::rect<s32>( core::position2d<s32>(0,y_from),
+                                               core::dimension2d<s32>(screen_size.Width, text_height) ),
+                              video::SColor(255, 255, 0, 0),
+                              true /* hcenter */, true /* vcenter */);
+    }
+    
 #if (IRRLICHT_VERSION_MAJOR == 1) && (IRRLICHT_VERSION_MINOR >= 7)
     g_driver->enableMaterial2D(false);
 #endif

src/guiengine/engine.hpp

@@ -286,8 +286,11 @@ namespace GUIEngine
     
     float getLatestDt();
     
+    /** show a warning message to explain to the player that only the game master cn act at this point */
+    void  showMasterOnlyString();
+    
     /** Add a cutscene to the list of screens known by the gui engine */
-    void addScreenToList(Screen* screen);
+    void  addScreenToList(Screen* screen);
     
     // Widgets that need to be notified at every frame can add themselves there
     extern ptr_vector<Widget, REF> needsUpdate;

src/input/input_manager.cpp

@@ -420,7 +420,11 @@ void InputManager::dispatchInput(Input::InputType type, int deviceID, int btnID,
 
             // When in master-only mode, we can safely assume that players are set up, contrarly to
             // early menus where we accept every input because players are not set-up yet
-            if (m_master_player_only && player == NULL) return;
+            if (m_master_player_only && player == NULL)
+            {
+                GUIEngine::showMasterOnlyString();
+                return;
+            }
             
             // menu input
             if (!m_timer_in_use)
@@ -434,7 +438,12 @@ void InputManager::dispatchInput(Input::InputType type, int deviceID, int btnID,
                 int playerID = (player == NULL ? 0 : player->getID());
                 
                 // If only the master player can act, and this player is not the master, ignore his input
-                if (m_device_manager->getAssignMode() == ASSIGN && m_master_player_only && playerID != 0) return;
+                if (m_device_manager->getAssignMode() == ASSIGN && m_master_player_only && playerID != 0)
+                {
+                    GUIEngine::showMasterOnlyString();
+                    return;
+                }
+                
                 GUIEngine::EventHandler::get()->processAction(action, abs(value), type, playerID);
             }
         }