ActionScript 3.0 :: MovieClip (Controlled By Extending Class) On Stage Reference
Jun 2, 2011
I'm currently working on a AS3.0 project in Flash. I have a main movie clip in flash on the stage. This mc contains 3 frames. They represent the pages in my application. In each of those frames are a lot of nested MCs. Such as menu buttons, display content for the MC buttons, etc. Everything is controlled by a class extending from MovieClip. When I run the application and press the green button on the second frame in a nested MC of the main Movie Clip on the stage. The event must jump to the 3th frame in that main MovieClip.
Here's the problem
If I immediately press the green button, everything works great.
But this does not happen when I press a different menu button first.
I've been searching around all afternoon, and am pulling my hair out. 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 :
[Code]...
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? Is there a really easy way to do this with some syntax/command that I have not learned yet?
I want to add a property to the MovieClip class. I just have a bunch of MovieClips that are placed on the stage by reading an XML file and creating lots of clips according to the information in them. Now, I need to know which MovieClips were created below previous clips, and I figure that the easiest way to do so would be by extending the MovieClip class and add an order property.I have some problems though: I don't know how to set or get this order property within the main clip, I don't know how to place this clip within my movie, and I don't know how to create them dynamically (do I just do something like var myNewObjectOfExtendedClass : myExtendedClassName = new myExtendedClassName?)
This is the code I have on my extended class, called Expando.as:
extending a class from MovieClip? I could just make a movieclip variable in the class to make it simpler. I heard if you extend from Movieclip it makes it feel like its dynamic because you have frames (gotoAndStop, etc). However, it allows me to have direct access to variables (or this.) instead of somemc., and I believe thats faster because 1) smaller name variable lookup, 2) no get function call.
I've been going through the OOP AS 2.0 tutorial here on Kirupa, and I was curious WHY this code is in a class which extends the MovieClip class and is used to affect a linkage item in the library:
Code: // init method for arguments which in other normal // circumstances (non-MovieClip classes) would be // given to the constructor. Not an option with MovieClips
[code].....
Is there something undocumented about why I wouldn't pass those parameters in when instantiating a new instance of the class in question? What is different about extending the MovieClip class?
When you do, you'll see that the movieclip should obviously be at position (0, 0) on the stage. However it appears at (25, 5)! if I leave in the original "this.x = xx;", then it appears at (50, 5). If I also leave in "this.y=yy;" then it appears at (50, 10).
Is there any way of extending a class which is extending the movieClip class? Or generally a way to add extra methods to an allready existing class without having to add them in the actual class declaration. I was thinking of using Interfaces but how can I implement an Interface to a class which is extending a movieclip?
Code: import interfaceName class className implements interfaceName{ //stuff } But where do I put the code which extends the MovieClip?
I would love if someone could take a look at the code below. When you do, you'll see that the movieclip should obviously be at position (0, 0) on the stage. However it appears at (25, 5)! if I leave in the original "this.x = xx;", then it appears at (50, 5). If I also leave in "this.y=yy;" then it appears at (50, 10).
I have a library symbol, exported for Action-Script and to Frame1. Now in the document Class, i write
public class Test { public function Test():void {
[Code]....
Now the code works fine but when i write my own (sealed/fixed) Box Class that surely Extends MOVIE-CLIP, statement-2 gives error , i know the Box Class is not dynamic but the Movie-Clip is Dynamic. Now what i understand that Movie-Clip Class being dynamic becomes fixed/sealed when it is extended by any Fixed/sealed Class???
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 am doing a looping background with 2 identical BG movieClip (B1 and B2). Those 2 are "new" by the same class.
var B1:MovieClip = new BG(); var B2:MovieClip = new BG();
But because this BG class picture is loader from the internet and the picture is rather big. When I addressed its loading by using progressEvent. The picture is really loaded 2 times. Is there anyway I create B2 based on B1 without using new BG() again? Since it definitely makes a new BG with Loader code inside.
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?
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 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]..
when to use this in a classes?is there any specific rule?is it wrong to use this when you want to just access the stage that way?or is it better to pass the reference to the stage in the class constructor?
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?
Is there a way to get an instance reference to the document class to call a method of it from the stage's timeline?I see that here's a possible solution: using a singletonOther solution I though of is using stage.getChildAt( 0 ) but it's not very nice.Is there an 'official' instance reference? because the document class is obviously instantiated at startup, but is that instance accessible in any way without having to use a custom solution like the ones mentioned?
I'm trying to reference objects on the stage in the current frame from a document class in Actionscript 3 in Flash CS3. In this example, I'm trying to get at a dynamic text field with the instance name "question_txt", but there are also buttons and other things I'll need to get at to put event listeners on and such.
I have "Automatically Declare Stage Instances" checked in the publish settings, so the references should be there -- in fact, if I try to declare them in the class, I get errors about a conflict with the name -- but when I try to reference these objects (in any of several ways I've now tried!) I always get Null.
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'm having a problem with this menu tutorial I followed from ASGamer. I have done and used most, if not all of the tutorials from that site.Anyway my problem is their base menu class;
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:
