public void Update(GameTime gameTime)
 {
     if (Keyboard.GetState().IsKeyDown(Keys.D1))
     {
         manager.currentMode = ScreensManager.MODE.GAME;
     }
     else if (Keyboard.GetState().IsKeyDown(Keys.D2))
     {
         manager.currentMode = ScreensManager.MODE.HELP;
     }
     else if (Keyboard.GetState().IsKeyDown(Keys.D3))
     {
         manager.currentMode = ScreensManager.MODE.CREDITS;
     }
     else if (Keyboard.GetState().IsKeyDown(Keys.K))
     {
         manager.currentMode = ScreensManager.MODE.CONFIG;
     }
     else if (Keyboard.GetState().IsKeyDown(Keys.Q))
     {
         manager.Exit();
     }
 }