Sync WaitForSeconds() timer with Update timer

Questions & Answers
1

I have a coroutine that is supposed to be in synced with my Update (or FixedUpdate) method. However when I disable my script (pausing Update and FixedUpdate), the coroutine continues to run… Basically, what I want to happen is for the WaitForSeconds() timer to use also Time.deltaTime/Time.fixedDeltaTime, but it doesn’t. What could be my alternative? Is there a way to write a WaitForSeconds() method but sync its timer with Update so when I disable my script the timer also pauses and resumes when I re-enable my script?

Here is a code reference:

void Start()
{
	StartCoroutine("HealTimer");
}
IEnumerator HealTimer()
{
	while (true)
	{
		yield return new WaitForSeconds(1f);
		hp += 20;
	}
}

PS. Please don’t suggest to put the code in Update/FixedUpdate instead. I really want to use coroutines here. Thank you.

Edit: To layout the context of this question…

I have a Pausable component, which basically disables the other scripts attached to the gameObject. So what I want to happen is that, when I pause my gameObject (disable the script), I could pause the WaitForSecs() coroutine.

2

I have solved the problem… What I did was I created a timer for my Pausable component. Below is the layout of my game object and the trimmed down code:

[21729-screenshot+2014-02-05+06.36.38.png|21729]

Pausable Component:

public class Pausable : MonoBehaviour
{
    // holds all scripts currently paused 
    private List<MonoBehaviour> m_pausedScripts = new List<MonoBehaviour>();

	// this is used to support pausing of WaitForSeconds() when using coroutine
	float m_timer = 0;

	// is this gameObject currently paused?
	private bool m_isPaused = false;

	void Update()
	{
		if (!m_isPaused)
		{
			m_timer += Time.deltaTime;
		}
	}

	public void Pause()
	{
		// label as paused
		m_isPaused = true;

		// pause scripts
		MonoBehaviour[] scripts = this.GetComponents<MonoBehaviour>();
		foreach (MonoBehaviour script in scripts)
		{
			// skip this script
			if (script is Pausable)
				continue;
			// pause only enabled scripts
			if (!script.enabled)
				continue;
			// pause the script
			script.enabled = false;
		}
	}
	
	public void Resume()
	{
		// label as unpaused
		m_isPaused = false;

		// resume paused scripts
		foreach (MonoBehaviour script in m_pausedScripts)
		{
			// pause the script
			script.enabled = true;
		}
	}

	public IEnumerator WaitForSeconds(float secs)
	{
		float startTime = this.m_timer;
		while (true)
		{
			if (this.m_timer - startTime >= secs)
			{
				yield break;
			}
			yield return null;
		}
	}
}

Test script

public class Test : MonoBehaviour
{
	void Start()
	{
		// start heal timer
		StartCoroutine("HealTimer");
	}

	IEnumerator HealDamageTimer()
	{
		while (true)
		{
			Pausable pausable = GetComponent<Pausable>();
			yield return StartCoroutine(pausable.WaitForSeconds(1f));
			hp += 20;
		}
	}
}

Now, the WaitForSeconds() pauses when I pause my gameObject. And resumes when I resume it. Hope it helps!