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?
Can I access a static variable of a subClass' subClass? I don't want to instantiate it, just looking to get the variable because it has already been initialized by the subClass.example:
package { public class A extends MovieClip { private var classB:B = new B();
I'm running into the situation where I can't instance a SubClass in the above SuperClass because the SubClass is extending from the SuperClass.
I get stack overflow. Fair enough, right?
Well, I want to add this SubClass to the display, and the only way I know how to do that is through addChild(). To addChild() I need to instance the SubClass.
I can't put any visual display instance or events in this subclass because it's currently null and extends is keeping me from doing so. It's great cuz I can share all the goods, but now I'm stuck dancing inside functions because I can't use events on the main "timeline" of the null SubClass.
In my flash document, I have a movieclip drawn on the flash stage (put there myself, not dynamically). I want to use this as a holder for an external .swf. I am using a sub-class to run the loading script. I pass the stage reference to it as the variable "theStage". It has no trouble loading things directly to the stage, but it can't find my movieclip for some reason. I have exported the movieclip for actionscript in the symbol properties panel and have given it an instance name.I've tried theStage.myMovieClip.addChild(mySwf); and suchlike, but always get this error message in output:ReferenceError: Error #1069: Property myMovieClip not found on flash.display.Stage and there is no default value.at MethodInfo-206()Some more information: It works from the main class without any trouble.
Is there a way to tell flash to instantiate a Stage subclass called "TheStage" instead of the default Stage class as root/parent of my document class? public class TheStage extends Stage{ //code }
Then when I do "DisplayObject.stage" I want it to return the instance of TheStage instead of the default Stage insteance. I want to do this so that I can override the addEventListener method of the Stage class. So if I call DisplayObject.stage.addEventListener I can execute my own code routine. Is that possible and how?
ActionScript Code: 1067: Implicit coercion of a value of type __AS3__.vec:Vector.ie.aro.floorplanviewer.model.buildingVOs:ConfigurationVO>[code]....
which surprises me as ConfigurationVO inherits from NodeVO.Is the compiler really not able to figure out that a Vector of a superclass should be able to hold a reference to a Vector of a subclass?
I am currently working with a contractor company that is hosting a flex based website. They are putting the swf files that I have developed into their flex site.The issue that I am having is that within my swf file I need to reference the stage.I do this by "MovieClip(parent).stage"... I do not use the keyword "root", I just reference my swf's root through however many "parent"s i need. It works fine when I publish on my own, outside of their flex site. When it is used in the flex site, they are getting an error that they cannot reference the stage/ stage is null. It is vital that I am able to reference the stage of my swf.
I have 9 MovieClips on stage (p1, p2, p3...), different colors and sizes. I have one AS3 class -Snake- that as an instance is supposed to duplicate one of these MC's as a Shape. The reference to the specific MC is supposed to be on the constructor method. These instances are supposed to be triggered from one global Enter.FRAME event.
My question: How can I refer a distinct MC from within a class? I ask this because this MC will be dynamic and its properties ever-changing (position and color). I know this can be solved by adding distinct Enter.FRAME listeners per instance, but I'd rather avoid bad practices.
I am currently working with a contractor company that is hosting a flex based website. They are putting the swf files that I have developed into their flex site. The issue that I am having is that within my swf file I need to reference the stage. I do this by "MovieClip(parent).stage"... I do not use the keyword "root", I just reference my swf's root through however many "parent"s i need. It works fine when I publish on my own, outside of their flex site. When it is used in the flex site, they are getting an error that they cannot reference the stage/ stage is null. It is vital that I am able to reference the stage of my swf.
In my document class, I am instantiating a class like this:
cues = new CuePoints(); cues.addEventListener(CuePoints.CUE_POINTS_CLASS_ADDED, setCuePoints); addChild(cues);
[Code]....
If I try to reference a MC that sits on the stage called videoPlayer_main like so: stage.videoPlayer_main I get the following error: 1119: Access of possibly undefined property videoPlayer_main through a reference with static type flash.display:Stage.
I'm trying to get a small popup (a volume bar) to work from within a class.I made a piece of actionscript code that creates an empty movieClip and draws the bar into it and made it onto a class. The only thing I now have to do to add the bar to a programm, is create an instance of that class. Nothing needs to be added to the stage.The problem I encounter is that I need the bar to stay on top. New movieclips always get higher depths (using getNextHighestDepth()), so that's a problem.Calling swapDepths() for every new movieclip is far too complex and afaik there is no such thing as "bring to front" in actionscript, it only exists at design time, not at runtime.
So I though I'd use 2 layers/movieclips in the timeline, one for the volume bar and one for the rest, and add an empty movieclip to both.This way I know that all children I add to one movieclip will alway lay below anything I add to the second movieclip. (or is there an easier way to accomplish what I need? Levels maybe? I've never looked into levels, I only know they exist when loading a clip)This means I need to add a some extra stuff to the stage at design time, but if this fixes the issue.. ah well.But how can I access that movieclip from within a class? The reference "_root.volumeBarPlaceholder" works from within the main actionscript, but not from within a class because I get the compiler error "There is no property with the name '_root.volumeBarPlaceholder'";
How do I reference the stage from a class? I need to add eventlisteners to the stage for mouse movement. I also need to add custom cursors. I always get an error when I try to reference stage. anything. Or event if I do this:
I have some object, which extends movie clip:public class MyClass extends MovieClip Now, I want to put two of this in the stage:[code]That would put one, but the other I want it to be exactly the same as the first, so I just need to add a "reference" of obj to the stage, along with obj itself.In the end, I want two objects of type MyClass doing the same thing in the stage. If I try to simply do:[code]only obj2 will appear in the stage.How could I achieve that with references? (in order to save memory and CPU time (it is really important))
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.
What methods can you suggest for me to get a reference to the stage in my static class?
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 { obj.x = obj.stage.stageWidth/2; } Utilz.alignToCenter(instance of navigation class)
Ive got two classes and my stage. I'm trying to use an array to keep control of my enemy class's number for collision purposes and I managed to get the enemies to populate the array.
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]...
I have 9 MovieClips on stage (p1, p2, p3...), different colors and sizes. I have one AS3 class "Snake" that as an instance is supposed to duplicate one of these MC's as a Shape. The reference to the specific MC is supposed to be on the constructor method. These instances are supposed to be triggered from one global Enter.FRAME event. How can I refer a distinct MC from within a class? I ask this because this MC will be dynamic and its properties ever-changing (position and color). I know this can be solved by adding distinct Enter.FRAME listeners per instance, but I'd rather avoid bad practices.
ActionScript Code: public function Snake(id:MovieClip) { body = new Array(); head=new Point(id.x, id.y); size = id.width; color = getColor(); // need to have a class variable that refers to the index [Code] .....
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?
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
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?
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]..
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:
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
