What is the most efficient way to understand coroutine in another script finished its job?

Questions & Answers
1

Hello,
I am callling a coroutine from another script. But caller script must to do something when this coroutine finishes its job. What is the most elegant, modular and efficient design for that purpose.

I can use boolean or interface but they don’t seem like a good design.

I thought broadcast message but I have never used them and I don’t know their efficiency.

2

You can yield the coroutine from the caller, like so:

// ....
StartCoroutine(FirstClassCaller());
// ...

IEnumerator FirstClassCaller() // Has to be a coroutine itself
{
	Debug.Log("Starting.");
	yield return OtherClassCoroutine(); // Start the coroutine and wait for it to finish
	Debug.Log("Other coroutine just finished.");
}

IEnumerator OtherClassCoroutine()
{
	Debug.Log("Waiting.");
	yield return new WaitForSeconds(5);
}
3

If you need something executed after a certain time known by one script but not by the caller, you could just pass the method with it as a callback:

public IEnumerator DoAndExecuteLater(System.Action callback){
yield return new WaitForSeconds(5f);
if (callback != null)
callback();
}

StartCoroutine(DoAndExecuteLater(FunctionToCallLater));