About 'Introducing Coroutines'!

Unity Courses Talk
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1

In this video (objectives)…

  1. How loops stall of block our code
  2. Use 'IEnumerator' as a return type
  3. Using 'StartCoroutine()'
  4. How to 'yield' execution
  5. Returning a yield instruction
  6. Using 'WaitForSeconds()'

After watching (learning outcomes)…

Use a basic co-routing to make a time-based sequence appear to run in parallel to the rest of your game code.

(Unique Video Reference: 7_RR_CU2)

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2

Unrelated, just thought I’d mention it here though. The topic of video capture keeps coming up due to the many many options out there, but I feel one is overlooked on Windows 10.

There’s actually a built in way to do it that has minimal impact on performance. Just hit the Windows key + G, say yes this application is a game. Then you’re free to use the game bar to stream or just record whatever it is you’re doing with ease. No downloading or messing with settings. Just Windows + G.

Cheers.

3

Thanks for sharing

4

I totally did not understand the coroutine explanation. Even after watching the Unity channel’s official coroutine video explanation, I was still confused. The explanation explained what a coroutine could do before properly explaining what it is. I would recommend this video that I finally found that explains it quite well. https://www.youtube.com/watch?v=UnrITNPDnas

5

Thanks for sharing

6

wow im learning alot here, this is good stuff, thanks ben!

1 Like
7

Hi

I changed the game to use a Coroutine in the Search algoritme so i could see how the algoritme worked.

It worked fine - but now i have a problem with the path.

As the Coroutine slows down the search - the explored from is not set when the calculatePath tries to add the waypoints.

How can i set so a method call should only be called when a coroutine is entirely finished.

I tried adding a bool and setting a while (!bool){Thread.Sleep(1000)} but that just broke the game.

8

@Nina can you help here?

9

Hi Jacob,

Without knowing your code, I’d suggest the following solution:

void DoSomething() {
    // ...
}

IEnumerator MyCoroutine {
    WaitForSeconds delay = new WaitForSeconds(1f);

    loop {
        // ...
        yield return delay;
     }

    DoSomething();

}

DoSomething() gets called when the loop is terminated. In my example, “loop” is pseudo-code, not C#. You have to replace it with your own loop.

10

Hi
Thanks alot. Will try to refactor it like that.

Jacob