Time for action – creating the countdown logic

Let's set the startTime variable, and build the logic to handle the counting-down functionality of our clock.

1. Set the startTime variable:

   function Awake() {
      startTime = Time.time + 5.0;
   }

   Note

   Five seconds to beat the game is a bit ridiculous. We're just keeping the time tight for testing. You can crank this variable up later.

2. Decrease the amount of time on the clock:

   function DoCountdown()
   {
      timeRemaining = startTime - Time.time;   
   }

3. If the clock hits zero, pause the clock and call the TimeIsUp() function:

   timeRemaining = startTime - Time.time;
   if (timeRemaining < 0)
   {
       timeRemaining = 0;
       clockIsPaused = true;
       TimeIsUp();
   }
   

4. Add some Debug statements so that you can see something happening:

   function DoCountdown()
   {
      // (other lines omitted for clarity)
      Debug.Log("time remaining = " + timeRemaining);
   }
   
   function TimeIsUp()
   {
      Debug.Log("Time is up!");
   }

5. Save the script and test your game.

You should see the Debug statements in...