Resume timer after application exit

Questions & Answers
1

Hi there, nooby question lol.

I’m writing a timer that counts down from X minutes.

Countdown function:

private void UpdateTime()
{
    secondTillRefill -= Time.deltaTime;
    if (secondTillRefill <= 0)
    {
        currentLives++;
        secondTillRefill = interval.TotalSeconds;
    }
}

Save the time the application exits - The game is for WP8 - does this work for that?

private void OnApplicationQuit()
{
    PlayerPrefs.SetString("TimeOnExit", DateTime.Now.ToShortTimeString());
}

So when I resume I’m currently doing this in Awake:

 if (PlayerPrefs.HasKey("TimeOnExit"))
    { 
        var x = DateTime.Now - DateTime.Parse(PlayerPrefs.GetString("TimeOnExit"));
        secondTillRefill = x.TotalSeconds;
        PlayerPrefs.DeleteKey("TimeOnExit");
    }

And it doesn’t work, hence the question xD.

So yeah say I exit the game and the timer is on 1:30 (1 minute, 30 seconds)

I restart the game 30 seconds later, the timer should show 1:00 (1 minute, 0 seconds).

Anyone point out the flaw?

Cheers

2

var x = DateTime.Now - DateTime.Parse(PlayerPrefs.GetString(“TimeOnExit”));

If you just look at the order of the subtraction, you notice that x gets bigger the longer you wait, right ? If I’m looking at it right, var x becomes is the amount of seconds you had the app closed, so you should subtract that from the saved value.