Why isn't IEnumerator working?

Here is my code:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class BossControl : MonoBehaviour
6. {
7.     // Start is called before the first frame update
8.     void Start()
9.     {
10.         StartCouroutine(wait());
11.     }
12.  
13.     IEnumerator wait(){
14.         yield return new waitforsceconds(0.5f)
15.         gameObject.transform.localScale = new Vector3(2,2,2);
16.     }
17.  
18.     // Update is called once per frame
19.     void Update()
20.     {
21.  
22.     }
23. }
24.  

What is wrong with IEnumerator?
Please quote me and fix my code

 

Hi @Bigmancozmo

Did you actually check your IDE and/or Unity console for error messages?

I'm pretty sure your code will give some red squiggly lines already in IDE as you haven't named your wait for seconds correctly.

https://docs.unity3d.com/ScriptReference/WaitForSeconds.html

 

You have to give the IENumerator a keyword like private or public beforehand, similar to a normal function.

Code (CSharp):

1. public IEnumerator wait(){
2.         yield return new waitforsceconds(0.5f)
3.         gameObject.transform.localScale = new Vector3(2,2,2);

And StartCoRoutine takes a string value, the string being the name of the function:

Code (CSharp):

1. StartCouroutine("wait");

 

Thank you.
But why does it say it expected a semicolon after "yield return new waitforsceconds(0.5f)" and when i add it then it gives my a bunch of new errors?

 

Because you have to have a semicolon at the end of the line.
But you also have other issues, like:
you have put

waitforsceconds

instead of

WaitForSeconds

you have put

StartCouroutine

instead of

StartCoroutine

Look at the errors and work through them all to sort them out. Also just telling us that you get a bunch of new errors and not saying what they are does not allow us to help you very much.

 

@BaBiAGameStudio

Well he didn't even read the first reply where I already pointed out that wait for seconds issue...

 

When I add the semicolon, it gives me 2 errors. The first one says "(12,26): error CS0246: The type or namespace name 'waitforseconds' could not be found (are you missing a using directive or an assembly reference?)"
the second one says "(18,9): error CS0103: The name 'StartCouroutine' does not exist in the current context"

I did manage to fix one of the errors by changing Transform to transform

 

I did read your reply and...
Thank you for the help i dont have any more errors thanks you!!!!
All i had to do was experiment with my errors until they were gone

 

Not adding a "private" keyword before IEnumerator makes it automatically private. Also IEnumerator doesn't need to be public to be called, as long as it's called in the script where it was initiated.

Not necessarily. The full name of the function or enumerator to be called followed by () also works. It's actually a better way of doing things since the IDE recognises the enumerator's name automatically.

 

Thank you. I think I'll try this next time I find myself using a coroutine.

 

Thank you for pointing out that I replied to this first thing in the morning.

 

There is something similar about Invoke() and InvokeRepeating() where strings are used as arguments. In their case though the () are not necessary and you need to use the keyword "nameof".

For example, invoking a method called "Shoot" after a 0.5 second delay:

Code (CSharp):

1.     Invoke(nameof(Shoot), .5f);

or invoking it repeatedly every 0.5 second after a 1 second delay:

Code (CSharp):

1.     InvokeRepeating(nameof(Shoot), 1f, .5f);

 

You'll also need to use nameof in StartCoroutine() if you need to delay it.

Code (CSharp):

1. StartCouroutine(nameof(Wait), delay);

 

@APSchmidt you don't have to use nameof. You could just call the method

Code (CSharp):

1. StartCoroutine(wait(), 0.5f);

But for the bits where you will be using a string (which is certainly available under StartCoroutine, and Invoke and InvokeRepeating require these), I absolutely advocate nameof instead of the string

 

Nope, doesn't work; that's why I added my latest post. In a delayed coroutine, you need to use either a string or nameof.

 

Yep, that is totally my bad.

However, I can't find a StartCoroutine that takes a second 'delay' parameter. The 'delay' in this scenario is a parameter that will get passed to the function (check the StartCoroutine signature). In that case, you'd just call it

Code (CSharp):

1. StartCoroutine(wait(0.5f));
2. // or
3. StartCoroutine(nameof(wait), 0.5f);

In which case the wait function should take a float and do some delay on that

Code (CSharp):

1. IEnumerator wait(float delay)
2. {
3.     yield return new WaitForSeconds(delay);
4.     // do your thing...
5. }

You were right, though; given what that wait is doing, the OP may as well have used

Code (CSharp):

1. Invoke(nameof(wait), 0.5f);
2.  
3. void wait()
4. {
5.     // do your thing...
6. }