Actionscript 3 :: Recasting Member Of A Library Class To New Type In Extended Class?
Oct 14, 2010
I created an flv video player using Flash Builder 4. This "BasicVideoPlayer" project is compiled into a SWC that will be eventually be used to create other video players that extend the functionality. One of the features is a view that appears when the video has finished playing that displays a "Play Again" button. This "Play Again" view has its own class, "BasicPlayAgain", that accepts a graphic asset that is exported from a .fla file that contains all of the graphic/UI assets.
In my new project, "EnhancedVideoPlayer", I'm using the BasicVideoPlayer SWC as a library to create a new video player that will add more functionality to the "Play Again" view; specifically it will add more buttons to that view.The EnhancedVideoPlayer uses a default class that extends the BasicVideoPlayer class. The BasicVideoPlayer class has a member called "playAgainScreen" whose type is BasicPlayAgain. The EnhancedVideoPlayer needs to override the playAgain member and recast it as EnhancedPlayAgain so it can control the new buttons properly.
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Jan 22, 2011
The use of library classes confuses me once again. I have the following situation:
[Code]....
I cannot put in any baseclass when using the class, so I'm forced to remove the baseclass. When using only the class I get a whole bunch of errors don't make any sense at all, and still appear even if I comment out all the code in the Page class. comop_padpagesFavorietenPage.as:7: 1152: A conflict exists with inherited definition com.op_pad.pages:Page.help in namespace public.
[Code]...
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Jun 9, 2011
I have a class, call it MyClass, and there are several variables that I need to be able to access each instance of from within the class.So for instance, I need the object myObject1, a member of MyClass, to store the variable myNumber.From the main timeline, if I trace myObject1.myNumber, I get whatever number I've stored.
However, I need to check the numbers against another parameter, so I need to be able to test if myObject.myNumber == myOtherNumber. But from within the class, if I trace this.myNumber or myNumber I get null.What is the proper syntax for accessing a variable within a class?
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Aug 18, 2009
I have 1 class (that is extending a UIcomponent) that is representing a component. In that component I create different instances of another class that is also a UIComponent but this class doesn't show up in de first class. I see that it is running and that it has the correct hights but I got the feeling that it doesn't show up with this hights. If I trace I see the width and height is 200 X 200 but there is still nothing visible in my component.
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Jan 29, 2012
If I have three classes:
public class Example {
public function Example () {
}[code]............
You can see that the two last classes extend the first one, and both have the 'variable' property. In case that I have an instance of Example and I am sure it is also an ExtendedExample OR AnotherExtendedExample instance, is there some way to access the 'variable' property? Something like
function functionThatReceivesAnExtendedExample (ex:Example):void {
if(some condition that I may need) {
ex.func()
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Sep 23, 2009
package{
public class Character{
protected var _hp:uint = 50; //Character Health Points
protected var _power:uint = 5; //Damage dealt
[Code].....
I`m instancing a Character and a Player in the Main Timeline, all in frame 1.
When I use: ""player.attack(character)"" it works fine by itself.
So I added the if (defender._hp <= 0) this.win() which gives me the following error:
1061: Call to a possibly undefined method win through a reference with static type Character.
"defender" is a Character instance, "this" is a Player instance and "win()" is a Player method. I try to call the Player method inside a Character method using the Player instance adding the "." and his method name
Do I really need to define the win() function in the Character class? Is there a bypass to use a subclass method in a parent class method if it`s called from an instance of the subclass?
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Sep 29, 2011
Let's say Class A has the flash.events.Event imported. Now let's say Class B extends Class A. Why in the hell do i need to import flash.events.Event in Class B? It makes no sens at all to me.
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Oct 20, 2009
Is it possible to dispatch event from class that isnt extended class of MovieClip? I created my own class and put import flash.events.Event; import flash.events.*; but when i call dispatchEvent compiler throws error:"1180: Call to a possibly undefined method dispatchEvent."
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Feb 18, 2011
I have created a class (extends the Event class) for use in one of my projects. If I trace the custom event object in the called function I get 'Event' as the type, but if I trace a TimerEvent, or MouseEvent, etc, I get TimerEvent or MouseEvent... Let me demonstrate:
var c:CustomObject = new CustomObject();
c.addEventListener(CustomEvent.ON_SEND_MESSAGE,fnc);
function fnc(e:CustomEvent) {
[Code].....
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Jun 7, 2009
Running Flash CS3, I've reviewed the lynda.com tutorial on building particle systems in ActionScript 3.0 to try and build some shooting sparks in an animation.I'm getting stuck at what I think is a really elementary point, but I can't seem to get past it.
Basically, all I'm trying to do at this point is create a class called Particle (which I will teach to do things that particles do a little later) link it to a MovieClip on the stage in my .fla file and use the particle's update function to move it across the stage in a manner defined in the instance (so I can later give different movement properties to each AS generated instance of the MC). I know there are easier ways to accomplish my base task without loading an external package, but this seems so strightforward that I must be doing something very simple wrong I just can't see so I thought I'd post the code here and see what I'm missing.
I start with a file called Particle.as in the same folder as my Spark Test.fla file.
In Particle.as I have the following code:
package{ import flash.display.*; public class Particle extends MovieClip { public xVelocity:Number; public yVelocity:Number; public function Particle() { xVelocity = 0; yVelocity = 0; } public function update():void { this.x += xVelocity; this.y += yVelocity; } }}
So I'm declaring that all particles are built with no motion, but if they are explicitly granted an x or y velocity, they will move by that much when the instance's update function is called in the timeline.
Then in my Spark Test.fla file, I have a small shape in a MovieClip called Spark. In the Linkage properties of Spark I have chosen to Export for ActionScript and Export in FIrst Frame. The class is called Spark and the Base class is Particle. For testing purposes I've dropped an instance on the stage and called it spark. Then in the actions layer in the first frame (the timeline is just the spark layer and the actions layer, one frame long each with no "stop();" so it should run forever) I have included the following code:
spark.xVelocity = 5;spark.yVelocity = -1;
function updateSpark(event:Event):void{ spark.update();}
addEventListener(Event.ENTER_FRAME, updateSpark);
What it looks like this should do is on each ENTER_FRAME Flash should call updateSpark which is a function that runs the update() event for the spark instance which is a instance of a movieclip that has an update event which moves x and y position by their relative velocity variables. This all seems pretty straightforward to me, but when I ctrl-Enter to test the movie, I get the following 3 compiler errors:
Particle.as Line 1: 5000: The class 'Particle' must subclass 'flash.display.MovieClip' since it is linked to a library symbol of that type.
Particle.as Line 7: 1071: Syntax error: expected a definition keyword (such as function) after attribute public, not xVelocity.
Particle.as Line 7: 1084: Syntax error: expecting rightbrace before semicolon.
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Nov 15, 2011
I am having an issue with compiling a .swf. I get the following error on what seems to be related to the images. There is about 40 that are all very similar the the error code listed below:
5000: The class 'com.decalmywall.Emb_EMB_BORDER' must subclass 'flash.display.BitmapData' since it is linked to a library symbol of that type.
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Sep 21, 2011
So I've been trying to use the data of a URLLoader Object to set the value of one of my members in my class, but can't figure out how to do it..
ActionScript Code:
package
{
import flash.net.URLLoader;
[Code].....
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Feb 20, 2004
I have a class which controls a movie clip. The movie clip has a button in it. The problem is that I cannot use the class members in the onPress function of the button.[code]
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Mar 20, 2009
I have created a class, that is simply a group of text fields. In the main app, I create instances of this class, and add them to the main app.How can i access the textFields that are in the class, to say, change the text, etc...
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Feb 20, 2004
I have a class which controls a movie clip. The movie clip has a button in it. The problem is that I cannot use the class members in the onPress function of the button.
[AS]
class Controller {
private var id:Number; // I have tried public also
private var myClip:MovieClip; // The clip that has the button
[code]...
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Mar 20, 2009
I have created a class, that is simply a group of text fields. In the main app, I create instances of this class, and add them to the main app. How can i access the textFields that are in the class, to say, change the text, etc... When I try, I get this: 1119: Access of possibly undefined property txtHeadLine through a reference with static type Article.
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Nov 28, 2009
I know that one can give a symbol already placed in the scene and instance name and be able to manipulate that object programatically through ActionScript in Frame actions. What I want to do instead, is bind that instance name to a class member so I can use it inside a class file and and eliminate the need for frame scripting.
I am new at this and I'm trying really hard to figure out what the ideal workflow is. I would like to use a fully OOP approach at developing my applications, however I like to use the graphical interface to position assets on the scene because I find it easier than positioning assets programatically. So the solution I am looking for is binding assets to class members. If such a workflow is not possible, what's the best approach in dealing with assets in a fully OOP design?
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Apr 5, 2010
I have an actionscript class with a static member variable defined.
public class A
{
public static var x:int;
}
When I try to access it from different parts in my code I don't get the same value in each spot.
A.x
I am accessing the variable in different modules that are loaded, so they are all in their own separate .swf file.
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Feb 19, 2010
I realize this is kind of an odd issue, but I am wondering if there's any way to get Flash to allow me to access a class's static functions using a class variable that points to the class. Example:I create a class called FooClass that has a static function named fooI then create a variable of type Class that points to it
Code:
var class:Class = Class(getDefinitionByName("FooClass"));
However, when I try to call foo() using the variable, it errors saying the function
[code].....
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Mar 1, 2011
How to populate a flex datagrid from an Arraycollection without specifying DataGridColumn's individually. Is there any custom datagrid available where I can pass the datasource arraycollection and see the data populated in the output. Without knowing the structure / bluprint of an object is there anyway to find how many member variable that class have?
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Feb 2, 2010
I'm working on an accordion component and I was thinking that it'd be cool if I could write a very basic one and then set it up so that it would be possible to pass in any kind of container class and child class so long as they subclassed a particular parent or implemented an interface (haven't really gotten that far yet).
What I've noticed though is that I can't setup a default class for my constructor parameter. For example I'd like to do this:
Code:
public function DropDownList(containerClass:Class = ContainerSprite, childClass:Class = ChildSprite)
However it gives me the following error:
1047: Parameter initializer unknown or is not a compile-time constant.
[Code]....
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Jul 17, 2009
Ok, I have spent a little time searching and I can't seem to find an answer to my question, maybe I'm asking the wrong question. here's my situation:
I have a document class called Main.as, this class has variables that instantiate a CreateShape.as class that acts as a superclass. The CreateShape.as class has a protected function that is overridden by other classes (I have a CreateCircle, CreateSquare etc). Those CreateCircle etc classes, use extends to extend the CreateShape.as class, and thus have the ability to override the main method (called newShape()).
[Code]...
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Mar 13, 2011
I'm trying to load a RSL library into a flash animation developed with Flash CS5 IDE, that extends a custom class and implements an interface. I have reduced the problem to the simplest setup and find that I can have my main class extend another class or implement an interface, but not do both at the same time if I want to load an RSL.I have a very simple class to extend:
import flash.display.Sprite;
public class MySprite extends Sprite
{[ code]...........
but if I want both I get the VerifyError: Error #1014 with MySprite not found and ReferenceError: Error #1065.
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Jul 14, 2009
I created a menu from a created .as extended Sprite class.
Except from this menu, I need it to return a String value of the item name the user selected.
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Mar 29, 2012
I have my main stage, and I have two objects (blocks), these two objects both extend from the "Block" class. The "Block" class is NOT extended from the Main Class.I would LIKE to call a function, in either the "Block" class or in it's subclasses, from the Main Stage Class. The functions will do slightly different things depending which object you are calling the function (Added different things, and different number of things to an array). What is the best way to implement this?
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Oct 15, 2010
i have this class but instancing it nothing appear
class myclass extends MovieClip
{
var mc:MovieClip;
[code].....
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Jul 23, 2009
Is there a way to hide properties or methods of an extended class?Ie, I want most of the extended properties and methods to be accessible but I want to hide others and use my own instead (not just overriding).
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Nov 14, 2009
capturing an event from extended class. i am extending class B from class A. snippet form class A (ButtonControl):
[Code]...
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Jul 12, 2010
I'm having some trouble with using a Document class in Flash CS3 that is an extension of another class. When I do this, I can no longer make references to MovieClips with instance names on the stage.Here's an example. I have a class called Minigame that extends MovieClip and then a class Shooter that extends Minigame. So the relationship looks like:MovieClip <-- Minigame <-- ShooterI want to use Shooter as my Document class in the Flash file Shooter.FLA. However, when I do this, I am unable to directly access any instance names of MovieClips on the stage of Shooter.FLA from Shooter.as. In other words, if I try to write the line:var mc:MovieClip = this.instanceName;in Shooter.as, I get the error:1120: Access of undefined property instanceName.
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Jan 8, 2011
I'm new to AS3 and I'm having a problem with an extended class that uses a URLRequest. I have a basic class called 'imageLoader' that I use for loading in external images
[Code]...
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