Adding Tweens to the pause menu

Now that we have the main menu finished, let's continue doing this with the pause menu:

1. Go ahead and open up our Gameplay scene. Update the PauseScreenBehaviour script to have the following implementation of SetPauseMenu:

/// <summary> 
/// Will turn our pause menu on or off 
/// </summary> 
/// <param name="isPaused"></param> 
public void SetPauseMenu(bool isPaused) 
{
   paused = isPaused; 

   // If the game is paused, timeScale is 0, otherwise 1 
   Time.timeScale = (paused) ? 0 : 1; 
   if(paused) 
   {
       SlideMenuIn(pauseMenu); 
   } 
   else 
   { 
      SlideMenuOut(pauseMenu); 
   }
}

Note that because PauseMenuBehaviour inherits from MainMenuBehaviour, it also can call the SlideMenuIn and SlideMenuOut functions, respectively, as long as they are marked as protected or public.

2. Now if we run the game, nothing will appear to happen when we hit the pause menu. This is because—as I mentioned previously—Tweens are scaled by Time...