Timer doesn't work properly

Questions & Answers
1

I wrote a simple countdown timer for my game. Please have a look on it:

void Update()
{
    	timer -= Time.deltaTime;
    	int mins = (int)timer / 60.0f;
    	int seconds = (int)timer % 60.0f;
    	text.text = timer.ToString (mins.ToString() + ':' + seconds.ToString()); // Text is a reference to UI Text object
}

At start I set it to 2 mins (120 seconds). Everything works fine until the timer reach 1:50 - then it displays 1:5110 instead of 1:50. I really don’t know why this happens. I tried to add the following line to the script:

text.text = text.text.Substring(0,4);

But after doing it timer was just avoiding 1:50. There was a 2 second long break between 1:51 and 1:49 .
The problem happens every 10 seconds. Can you help me?

3

You had me stumped dude!

Added this debug line, and it was never triggered, even if the numbers kept being weird:

  if (seconds > 60)
  {
      Debug.Log("MEH UNEXPECTED FAIL! timer: " + timer + " as int: " + ((int)timer) + " timer mod 60: " + ((int)timer) % 60 + " seconds: " + seconds);
  }

So it turned out it was the formatting of the string that I hadn’t even bothered looking twice at :slight_smile:

This works for getting the string version of the time:

Debug.Log(string.Format("[{0}:{1}]",mins, seconds ));
2

This is my code, works fine for me. I used FixedUpdate, you don’t have to run timer on every frame. Your problem most likely caused by “60.0f” float numbers. Try adding Mathf.Floor(timer % 60.0f)

    void FixedUpdate()
    {
        timePassed += Time.deltaTime;
        float timeLeft = maxTime - timePassed;

        string min = Mathf.Floor(timeLeft / 60).ToString("00");
        string sec = Mathf.Floor(timeLeft % 60).ToString("00");

        timeString.text = string.Format("{0}:{1}", min, sec);
    }