Using coroutine to change current GUI

Questions & Answers
1

Hi, as the title try to say, I have to change my GUI, specifically, a GUITexture, from time to time.
For example: in the first 5 seconds, I have to display the GUITexture1. After this, for another 5 seconds, I have to show the GUITexture2. I intend to display this GUITextures to make something like a “Introduction”.

So, I’ve tried to do something like this:

void OnGUI ()
{	
    if (messageGUI)
	{
  	    if (textOpt == "Ligado")
	     {
	        message = Resources.Load("Levels/General/generalSpeech1") as Texture;
			StartCoroutine(showMessage(message, new Vector2(tabItem, Screen.height-avatarSize-2*tabItem-messageSize.y), messageSize, time));
				
			message = Resources.Load("Levels/General/generalSpeech2") as Texture;
			StartCoroutine(showMessage(message, new Vector2(tabItem, Screen.height-avatarSize-2*tabItem-messageSize.y), messageSize, time));
				
			message = Resources.Load("Levels/General/generalSpeech3") as Texture;
			StartCoroutine(showMessage(message, new Vector2(tabItem, Screen.height-avatarSize-2*tabItem-messageSize.y), messageSize, time));
			}
		}
	}

IEnumerator showMessage (Texture message, Vector2 position, Vector2 size, float time)
{
	messageGUI.enabled = true;
	messageGUI.texture = message;
	messageGUI.name = "Message";
	messageGUI.pixelInset = new Rect(position.x, position.y, size.x, size.y);
	yield return new WaitForSeconds(time);
	messageGUI.enabled = false;
}

But I’ve noted that this don’t solve my problem, 'cause the OnGUI function are always running and the next command don’t wait the previous to finish before starts running. I know why, but I don’t figure out how could I do what I want.
Any ideas?

Thanks in advance.

2

Yeah, thks @asafsitner, and @cawas, for helping even outside the forum.

I could solve my problem with this script:

void Update(){
		
	introduction ();
		
    if(displayMessage){
		Debug.Log(timer+" "+currentMessage);
        timer += Time.deltaTime;
        if(timer <= time){
            messageGUI.enabled = true;
			messageGUI.texture = message;
			messageGUI.pixelInset = new Rect(position.x, position.y, messageSize.x, messageSize.y);
        }
		else
		{
		   	messageGUI.enabled = false;	
			displayMessage = false;
			timer = 0f;
			currentMessage ++;
		}
    }
}
	
//Levels
void introduction ()
{	
	if (textOpt == "Ligado")
	{
		if (currentMessage == 1)
		{
		    message = Resources.Load("Levels/General/generalSpeech1") as Texture;
			position = new Vector2(tabItem, Screen.height-avatarSize-2*tabItem-messageSize.y);
			displayMessage = true;	
		}
		else if (currentMessage == 2)
		{
			message = Resources.Load("Levels/General/generalSpeech2") as Texture;
			position = new Vector2(tabItem, Screen.height-avatarSize-2*tabItem-messageSize.y);
			displayMessage = true;	
		}
		else if (currentMessage == 3)
		{
			message = Resources.Load("Levels/General/generalSpeech3") as Texture;
			position = new Vector2(tabItem, Screen.height-avatarSize-2*tabItem-messageSize.y);
			displayMessage = true;	
		}
	}	
}