Make Back button in Movie Clip ?

Report · Dec 19, 2013

Im tryign to make a back button in my program but it is not working

here is my code

I have to buttons on my movie clip called jupiterback and bb which are instances

Header 1

public class Main extends MovieClip

{

var hp:HomePage;

var sp:StartPage;

var sunP:SunPage ;

var jupiterP:JupiterPage;

var vx:Number;

var vy:Number;

var speed:int;

var score:Number;

var aship:Ship = new Ship();

var s1:Sun = new Sun();

var j1:Jupiter = new Jupiter ();

public function Main()

{

sp = new StartPage();

hp = new HomePage();

sunP = new SunPage();

jupiterP = new JupiterPage();

vx = 0;

vy = 0;

score = 0;

addEventListener(KeyboardEvent.KEY_UP, onKeyUp);

addEventListener(Event.ENTER_FRAME, onEnterFrameSun);

addEventListener(Event.ENTER_FRAME, onEnterFrameJupiter);

// Start Page Event Listener

sp.sb.addEventListener(MouseEvent.CLICK, onStartButtonClick);

addEventListener(MouseEvent.CLICK, onStartButtonClick);

stage.addEventListener(KeyboardEvent.KEY_DOWN, keyHit);

addChild (sp);

jupiterP.bb.addEventListener(MouseEvent.CLICK, onBackButtonClickJupiter);

jupiterP.jupiterback.addEventListener(MouseEvent.CLICK, onBackButtonClickJupiter);

addEventListener(MouseEvent.CLICK, onBackButtonClickJupiter);

}

function onBackButtonClickJupiter(event:MouseEvent):void

{

if (jupiterP != null && contains(jupiterP)) {

removeChild(this.sp.homePage.jupiterP);

addChild(hp);

}

// Ive tried this method too but doesnt work

function onBackButtonClick_Jupiter(event:MouseEvent):void

{

addChild(hp);

removeChild(jupiterP);

}

Report · Dec 19, 2013

These are the errors it gives me

ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.

at flash.display::DisplayObjectContainer/removeChild()

at Main/onEnterFrameJupiter()[Desktop\Main.as:229]

ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.

Report · Dec 19, 2013

I don't see where you ever addjupiterP as a child. If you don't add it, it cannot be removed.

Report · Dec 19, 2013

i have a start page that has jupiterP inside it its called hp

when i click my startbutton hp opens up. I have a ship the ship moves to the planet jupiter and upon hitTest jupiterP opens up now i want to get back to hp using a button

function onStartButtonClick(event:MouseEvent): void

{

if (contains (sp))

{

removeChild(sp);

addChild(hp);

}

Report · Dec 19, 2013

The jupiterP you test for in the code below is not the same jupiterP that lives somewhere inside sp

if (jupiterP != null && contains(jupiterP)) {

removeChild(this.sp.homePage.jupiterP);

addChild(hp);

}

Report · Dec 19, 2013

What do I have to enter to find the instance of jupiterP inside sp ?

Report · Dec 19, 2013

If i can do this I will be done does someone know how I can find that Instance ?

Report · Dec 19, 2013

hello Mr Ned Murphy

Report · Dec 19, 2013

Here's what I'd try based on what you showed...

if (sp.homePage.jupiterP != null && sp.homePage.contains(jupiterP)) {

sp.homePage.removeChild(sp.homePage.jupiterP);

addChild(hp);

}

and if you do not have an jupiterP instance being created for anything in that class, get rid of it from what you show in the class.

One other way to approach this might be to just make it invisible. That way you don't have to wonder so much about properly targeting it. It could reduce that entire conditional down to...

sp.homePage.jupiterP.visible = false;

addChild(hp);

Regarding your persistent follow-ups... I'm not complaining and am not trying to come off as angry... just realize I do not live in these forums, so you have to learn to be patient.

Report · Dec 19, 2013

Sorry about the persistence i was desperate. Anyway i still couldnt get it to work so i took my game in a diffrent direction. Thanks