hackish fix for bug #791

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@12009 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/guiengine/widgets/model_view_widget.cpp

@@ -190,3 +190,9 @@ void ModelViewWidget::elementRemoved()
     m_rtt_provider = NULL;
     IconButtonWidget::elementRemoved();
 }
+
+void ModelViewWidget::clearRttProvider()
+{
+    delete m_rtt_provider;
+    m_rtt_provider = NULL;
+}

src/guiengine/widgets/model_view_widget.hpp

@@ -84,6 +84,8 @@ namespace GUIEngine
         
         /** Rotate to 'targetAngle' in degrees at given speed (in degrees per second) */
         void setRotateTo(float targetAngle, float speed);
+        
+        void clearRttProvider();
     };
     
 }

src/states_screens/kart_selection.cpp

@@ -255,6 +255,8 @@ public:
     core::stringw deviceName;
     std::string m_kartInternalName;
     
+    bool m_not_updated_yet;
+    
     PlayerKartWidget(KartSelectionScreen* parent, 
                      StateManager::ActivePlayer* associatedPlayer,
                      core::recti area, const int playerID, 
@@ -274,6 +276,7 @@ public:
         w_speed = 1.0f;
         h_speed = 1.0f;
         m_ready = false;
+        m_not_updated_yet = true;
         
         m_irrlicht_widget_ID = irrlichtWidgetID;
 
@@ -604,7 +607,7 @@ public:
         
         player_id_w *= 2;
         player_name_w = 0;
-        
+
         m_model_view->setBadge(OK_BADGE);
     }   // markAsReady
     
@@ -706,6 +709,13 @@ public:
                        kart_name_w,
                        kart_name_h);
         
+        // When coming from the overworld, we must rebuild the preview scene at
+        // least once, since the scene is being cleared by leaving the overworld
+        if (m_not_updated_yet)
+        {
+            m_model_view->clearRttProvider();
+            m_not_updated_yet = false;
+        }
     }   // onUpdate
 
     // -------------------------------------------------------------------------