ActionScript 3.0 :: Reference Stage From Within A Subclass?
Aug 9, 2011
I'm playing around with some classes from my Learning AS 3.0 book in an attempt to understand them. I have a main (document) class, and a class called NavigationBarXML.
Because the buttons for the nav bar are all set up in the subclass NavigationBarXML, I would like to position the nav bar relative to the stage (think btn1.x = stage.stagewidth - 50) from within this class. I understand that you cannot deal directly with the stage from a subclass and that you must add it to the display list before you can reference the stage from within this class.
How would I set up the main class so that I can reference the stage from my subclass so that on browser resize, my nav bar is positioned relative to the stage?
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Sep 22, 2009
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May 25, 2010
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Sep 13, 2010
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I have a static utility class that must have a reference to the stage, and I'm not sure what is the best option for me to get the stage inside my class...
I've thought of these options:Pass in as a parameter of the function Have a static variable I can set to the stage I don't like either of these because they are ugly.
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from my documentclass i got a isntance of the my view class in there i got a instance of navigation class extends Sprite I got a utilz.as file with all static public functions like this one
alignToCenter(obj:DisplayObject):vid
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I get a error stage is null reference..
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In simple example, I have a class called RedSquare that extends a Sprite. I need to have it in a central position of the stage. I do not know if importing definition of Stage class to RedSquare changes anything, but in the constructor of the class i could write [code]...
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Sep 30, 2010
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ActionScript Code:
public function Snake(id:MovieClip) {
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head=new Point(id.x, id.y);
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Nov 21, 2010
1) I have a movieclip instance on stage (simple graphical element that represents platforms for a hero to run and jump along). I have placed it on the stage with an external class engine.as and in this class it is called myPlatform and is an object of Platforms.as. The movieClip is called platforms and from a trace(myPlatform.name) the instance name is instance3.
2) I am attempting to access the properties of myPlatform in an Enterframe event loop in my character control and collision class (called hero.as)Basically here is the bit of code I am trying implement within Hero.as :
if (myPlatform.hitTestPoint(x,y,true)) { // if a platform is hit
trace("hitME");
y--;
tGravity = 0; // reset
break;
}
Here's the error that I get:
1120: Access of undefined property myPlatform
This all worked when I was writing actionscipt within the FLA file, on the timeline frame 1.I simply don't know how to access myPlatform from within the external Hero.as class! Do I need to create a variable?
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Aug 22, 2008
I have an array of MovieClips, when I try and use .removeMovieClip on one of the array items it removes reference to the MovieClip Object but it is still visible on the stage. When I address the MovieClip directly and use removeMovieClip on that it removes references and deletes from the stage.
i.e.
Scenario 1:
myArray = new Array();
myArray.push(myMovieClip);
myArray[0].removeMovieClip();
trace(myArray[0]);
trace(myMovieClip);
Traces out undefined, undefined but the movieClip is still visible on stage (and can still interact with).
Scenario2:
myArray = new Array();
myArray.push(myMovieClip);
myMovieClip.removeMovieClip();
trace(myArray[0]);
trace(myMovieClip);
Trace out undefined, undefined and the movieClip is removed from stage
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Feb 6, 2009
I have created a custom class that extends the movie clip on frame 1 of the main timeline I create it var mainBox2:mainBox = new mainBox(); addChild(mainBox2); Now as I understand it you have to cast the parent as a MC so in the constructor of my external class I try this var myStage:MovieClip = MovieClip(this.parent); trace (myStage); I get null. What am I doing wrong?
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Nov 17, 2011
I'm unable to load forces.swf (assume I can't edit it, as I don't have the source code) through an external swf, due to Stage reference in the base class how would I go about loading it (and any other possible SWF) without errors being thrown?
Here is a link to the problem I am trying to fix:[URL]..
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Nov 22, 2011
I am currently having problems referencing a MovieClip child which I add to the Stage from the Document Class. Basically when the MovieClip child is added to the Stage from the Document Class, I want a certain MovieClip already on the Stage to reference it once it is on the Stage.
Also, if it is possible, I don't want the MovieClip referencing the child being added to the Stage to have parameters linking it with the Document Class, because I plan on nesting this MovieClip within another MovieClip later on in the future.
Here is the code for the MovieClip class which is referencing the child once it is added to the Stage:
package com.gameEngine.assetHolders
{
import com.gameEngine.documentClass.*;
import com.gameEngine.assetHolders.*;
[Code].....
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Jan 24, 2012
I have created a XML driven shell where I'm calling external SWF files reading from the XML.ome of the SWFs has SCROLLPANE from the component panel of Flash is added on their respective stages. Now if I'm running those files individually, they are working fine. But it is loaded in the shell the below issue is coming.
TypeError: Error #1009: Cannot access a property or method of a null object reference. at fl.containers::ScrollPane/setScrollDrag() at fl.containers::ScrollPane/draw() at fl.core::UIComponent/drawNow() at fl.containers::BaseScrollPane/get
[code].....
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Apr 26, 2010
I am using foll0wing code to fetch data from XML file to flash.
Code:
function xmlLoad(fileName:String){
var pagedata:XML = new XML();
pagedata.ignoreWhite = true;
[Code]....
The problem I am encountering is that when I call function "createVar()" it looses the stage reference and "pagedata", my xml object.
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Jan 21, 2009
How do I reference to a Movieclip on the stage from inside a Class.as?
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