I would like to wait for LoadLevel, but with WaitForSeconds this button disappears

Questions & Answers
1

#pragma strict

var sound : AudioClip;

function OnGUI() {
    if (GUI.Button(Rect(600,400,100,100),"Play") ){
        audio.PlayOneShot (sound, 1);
        yield return new WaitForSeconds(2);
        Application.LoadLevel ("spacescene");
    }
}
2

OnGUI really shouldn’t be run as a coroutine. For OnGUI to work it must run the code every frame to display the button.

To achieve the same effect you should have the button call StartCoroutine on a separate method.

3

Yes OnGUI cannot be used as a coroutine.Since in a drawing function,it should be updated every frame.You can achieve what you are looking by starting another coroutine from the OnGUI. Something like this

#pragma strict

var sound : AudioClip;

function OnGUI() 
{
	if (GUI.Button(Rect(600,400,100,100),"Play"))
	{
		//Play the audioclip
		audio.PlayOneShot(sound,1);
		//Start the coroutine
		StartCoroutine(WaitToLoad());
	}
}

//The coroutine function to load with delay
function WaitToLoad()
{
	//Wait for 2 seconds
	yield WaitForSeconds(2.0);
	//Load the next scene
	Application.LoadLevel ("spacescene");
}