Added GameOver Scene

src/game/GameSession.h

@@ -21,6 +21,7 @@ private:
     // 如果操作执行成功就从
     void markComponentAsUsed(int componentID);
     
+    GameState m_gameState = GameState::GAME_RUNING;
 
 public:
     GameSession();
@@ -55,4 +56,6 @@ public:
 
     ActionType getCurrentActionType() const;
 
+    GameState getGameState() const;
+
 };