Pausing the game

To get the game to pause correctly, we will tweak some scripts we’ve written previously using the following steps:

1. Open the PlayerBehaviour script and add the code highlighted in bold to the FixedUpdate function:

   /// <summary>
   /// FixedUpdate is a prime place to put physics
   /// calculations happening over a period of time.
   /// </summary>
   void FixedUpdate()
   {
       /* If the game is paused, don't do anything */
       if (PauseScreenBehaviour.paused)
       {
           return;
       }
       // Check if we're moving to the side
       var horizontalSpeed = Input.GetAxis("Horizontal")
           * dodgeSpeed;
       // Rest of the FixedUpdate function...

The added code makes it so that if the game is paused, we will not do...