Wait between button presses

Unity Engine
,
1

I am trying to use either the menu button or the back button to pause the game, and then use eitherthe back button again or a resume button to continue playing, but only the resume button is working and not the back button, I think its pausing and resuming in the same frame so I need to put in a wait, here is what I have:

#pragma strict

//Set variables
var btnWidth:int = 225;
var guiMode:String = "InGame";
var gameActive:boolean = true;

//Update function ran every frame
function Update () {
	//If the game is not paused
	if(gameActive)
	{
		//If the menu or escape button is pressed
		if(Input.GetKeyUp(KeyCode.Menu) || Input.GetKeyUp(KeyCode.Escape))
		{
			//Pause the game
			guiMode = "Pause";
			gameActive = false;
			Time.timeScale = 0;
		}
	}
}

//Display GUI items
function OnGUI ()
{
	//If pause mode is set
	if(guiMode =="Pause")
	{
		//If the resume or back button is pressed resume gameplay
		if(GUI.Button(Rect(Screen.width/2-(btnWidth/2),Screen.height/2-70,btnWidth,60), "Resume Game") || Input.GetKeyUp(KeyCode.Escape))
		{
			Time.timeScale = 1;
			guiMode = "InGame";
			gameActive = true;
		}
	}
}

I tried adding in a yield WaitForSeconds(0.5) command but only got a “can not be a coroutine” error

//If the resume or back button is pressed resume gameplay
		if(GUI.Button(Rect(Screen.width/2-(btnWidth/2),Screen.height/2-70,btnWidth,60), "Resume Game") || Input.GetKeyUp(KeyCode.Escape))
		{
			yield WaitForSeconds(0.5);
			Time.timeScale = 1;
			guiMode = "InGame";
			gameActive = true;
		}

Does anybody have a solution to this please?

2

I figured out where I went wrong, here is what I now have if anyone else needs a solution:

#pragma strict

//Define variables
var btnWidth:int = 225;
var guiMode:String = "InGame";
var gameActive:boolean = true;

//Update function ran every frame
function Update () {
	//If the game is not paused
	if(gameActive)
	{
		//If the menu or escape button is pressed pause the game
		if(Input.GetKeyUp(KeyCode.Menu) || Input.GetKeyUp(KeyCode.Escape))
		{
			guiMode = "Pause";
			gameActive = false;
			Time.timeScale = 0;
		}
	}

	//If the game is paused
	else if(!gameActive)
	{
		//If the menu or escape button is pressed resume the game
		if(Input.GetKeyUp(KeyCode.Menu) || Input.GetKeyUp(KeyCode.Escape))
		{
			guiMode = "InGame";
			gameActive = true;
			Time.timeScale = 1;
		}
	}
}

//Display GUI items
function OnGUI ()
{
	//Display PAUSE menu
	if(guiMode == "Pause"  !gameActive)
	{
		//If the resume button is pressed resume gameplay
		if(GUI.Button(Rect(Screen.width/2-(btnWidth/2),Screen.height/2-70,btnWidth,60), "Resume Game"))
		{
			guiMode = "InGame";
			gameActive = true;
			Time.timeScale = 1;
		}

		//If restart level button is pressed restart the level
		if(GUI.Button(Rect(Screen.width/2-(btnWidth/2),Screen.height/2,btnWidth,60), "Restart Level"))
		{
			Time.timeScale = 1;
			Application.LoadLevel(Application.loadedLevel);
		}

		//If the main menu button is pressed, return to the main menu
		if(GUI.Button(Rect(Screen.width/2-(btnWidth/2),Screen.height/2+70,btnWidth,60), "Main Menu"))
		{
			Time.timeScale = 1;
			Application.LoadLevel(0);
		}
	}
}
3

if(GUI.Button(Rect(Screen.width/2-(btnWidth/2),Screen.height/2-70,btnWidth,60), “Resume Game”) || Input.GetKeyUp(KeyCode.Escape))

{
Invoke(“wait”,0.5);
}
function wait()
{

Time.timeScale = 1;

guiMode = “InGame”;

gameActive = true;

}

try dis…

4

if(GUI.Button(Rect(Screen.width/2-(btnWidth/2),Screen.height/2-70,btnWidth,60), “Resume Game”) || Input.GetKeyUp(KeyCode.Escape))

{
Invoke(“wait”,0.5);
}
function wait()
{

Time.timeScale = 1;

guiMode = “InGame”;

gameActive = true;

}

try dis…