title: Game over popup in Cocos2d v3 iOS
body: <p>I want to create a Game Over Pop Up, with two buttons and a high score label etc.. This pop up will be visible when the game over event happens and the gameplay scene will be paused.</p>
  
  <p>I tried to implement a game over scene (a separate GameOver class) successfully, but that's not what I want, as it replaces my current gameplay scene and appears on full screen. I want the game over small pop up to appear ON the gameplay scene, while the gameplay scene will be paused (thus indicating game over), and only the game over pop up's buttons will be active.</p>
  
  <p>I think I can achieve this by creating a game over layer (<code>CCNode</code> in v3 rather), but I haven't used multiple layers in a Scene yet (as currently I haven't explicitly defined any <code>CCNode</code>, just adding children to <code>self</code> and everything is working great), also I'm not sure of how can I pause the gameplay only, and let the game over layer (Popup) be active.</p>
  
  <p>Please please guide me with this as this is the only thing left in my game.</p>
  
  <p>Thanks a lot!</p>