IEnumerator, Unexpected symbol?

Questions & Answers
1

Hi, It’s since a week that I’ve this problem, in IEnumerator function, i get the error “Unexpected symbol”. I really hope that someone can Help me! :slight_smile:

 using System;
     using UnityEngine;
     
     public class LightAnimator : MonoBehaviour {
     
         Coroutine lightOnCoroutine;
         Coroutine lightOffCoroutine;
     
         public Light[] lights;
         public KeyCode controlKey = KeyCode.X;
         private bool on = false;
         
         void Start() {      
         }
         
         void Update() {
             if (Input.GetKeyDown (controlKey)) {
                 on = !on;
                 
                 if (!on) {
                     lightOnCoroutine = StartCoroutine ("ChangeLight");  
                     if(lightOffCoroutine != null) {
                         StopCoroutine(lightOffCoroutine);
                     }
                 }   
                 if (on) {
                     lightOffCoroutine = StartCoroutine ("StopLight");
                     if(lightOnCoroutine != null) {
                         StopCoroutine(lightOnCoroutine);
                     }
                     
                     
                 }
             }
             
             IEnumerator ChangeLight() {
                 int i = 0;
                 while(true) {
                     lights*.enabled = false;*

i++;
if(i > lights.length - 1) {
i = 0;
}
lights*.enabled = true;*
yield return WaitForSeconds(1);
}
}

}
}

4

Fixed several things, should work now! Just add your other coroutine now!

using UnityEngine;
using System.Collections;

public class LightAnimator : MonoBehaviour {
	
	Coroutine lightOnCoroutine;
	Coroutine lightOffCoroutine;
	
	public Light[] lights;
	public KeyCode controlKey = KeyCode.X;
	private bool on = false;
	
	void Start() {      
	}
	
	void Update() 
	{
		if (Input.GetKeyDown (controlKey)) 
		{
			on = !on;
			
			if (!on) 
			{
				lightOnCoroutine = StartCoroutine ("ChangeLight");  
				if (lightOffCoroutine != null) 
				{
					StopCoroutine (lightOffCoroutine);
				}
			}   
			if (on) 
			{
				lightOffCoroutine = StartCoroutine ("StopLight");
				if (lightOnCoroutine != null) 
				{
					StopCoroutine (lightOnCoroutine);
				}
			}
		}
	}
		
	IEnumerator ChangeLight() 
	{
		int i = 0;
		while(true) 
		{
			lights*.enabled = false;* 

  •  	i++;*

  •  	if(i > lights.Length - 1)* 

  •  	{*

  •  		i = 0;*

  •  	}*

_ lights*.enabled = true;_
_ yield return new WaitForSeconds(1);_
_ }_
_ }_
_}*_

2

Line 37 needs to read:

yield return new WaitForSeconds(1);

WaitForSeconds is a class, so what you’re really doing here is creating an instance of the class and returning it as the function result. In order to create a new class you must use the new keyword.

3

Isn’t your IEnumerator method declared inside Update? Declare methods inside a class but not inside other methods. Move it out of Update.