Basic OOP question... I want to add a couple functions to the Array class so that my program will be amazing and make me rich and famous overnight. So I create a new subclass NewArray which extends Array. Do I need to write a constructor method for NewArray? If I leave it blank will it just use the parent's (Array's) constructor method?
View 1 RepliesThere is a library component represented by Class A. But constructor of this class requires some parameters. When the component needs to be added dynamically, it's fine because of code :
var abc:A = new A(param1,param2)
But what if my movieclip is already present on the stage. I notice it gives out error, that the parameters are null.
Is their any way to insert constructor parameters for movieclips already on stage.
I have a class which subclasses Sprite (Class1). In this class I draw something on the stage. I have another class (Class2) that creates several instances of the first class (Class1) and places them on the stage. As I am creating the instances of Class1, I am adding an event listener for the CLICK event for each instance.When I click on any of the Class1 instances, I would like to execute a public function in Class1. However e.target is Sprite and I cannot conver it to type Class1.
View 2 RepliesI'm making a class called 'player', and really, I don't need a constructor function for it. Do you just outline the function, but don't put anything between the curly braces? Also, I'm a bit new with access levels. If I wanted my functions from my player class to be accessible from the main class, do I make them public?
View 3 RepliesIf I pass variable(s) like this in document class action script file(I'm not even sure if I can pass more than one variable):
Code:
ballPointRight = new BallPointRight(ball, xDir, padScreen) ;
And now the BallPointRight's action script file:
Code:
package {
import flash.display.MovieClip;[code]....
doesnt work since it doesnt recognize variables...
Is it possible to store a function constructor in an array? I tried, but getting an error for example, say this is my function:
functiom openPages():void
{
trace("pages open");
}
and my array:
var myArray:Array= new Array(openPages);
I am trying to make a subclass of flash.display.Loader, which should do something when the loader completes loading the content. So I do addEventListener(Event.COMPLETE, onComplete) on my loader subclass. But this Eventlistener is never called. Is this supposed to happen? Can't I use an Eventlistener on the class that dispatches the event? My code looks like this: public class MyLoader
[Code]....
I'm sure that I'm doing something daft here - I just need to remove a child that's created in the constructor through an event listener.My code is below but does not work. Can someone point me in the right direction please?
public class Main extends Sprite public function Main()
super();
var rectangleIndex:uint = this.getChildIndex(playerBackground)
[code]......
I´d like to know how could use the Timer class extended.I´m trying to pass a parameter to the constructor function, so I can use it inside the listener.
Here´s example:
[CODE]
package { import flash.utils.Timer import flash.display.DisplayObject public class ChangeColorTimer extends Timer { public static const CHANGE_COLOR:String = "changeColor"; public var obj:DisplayObject public function ChangeColorTimer(delay:Number, repeatCount:int, obj:DisplayObject ) { super(delay, repeatCount) this.obj = obj } } }
[/CODE]
That was the ChangeColorTimer that extends Timer.Now, I´d want to know how would I use ChangeColorTimer.I thought it was the same as using Timer.I´ve tried this:
[CODE]
public function changeColor(mc:MovieClip):void { var colorTransform:ColorTransform = new ColorTransform() colorTransform.color = 0xEE0000 mc.transform.colorTransform = colorTransform var changeColorTimer:ChangeColorTimer = new ChangeColorTimer(400, 1, mc) changeColorTimer.addEventListener(ChangeColorTimer.CHANGE_COLOR, setNormalColorListener) changeColorTimer.start() } private function setNormalColorListener(e:Event):void{ trace("called") }
[/CODE]
I called changeColor, but, I don´t get "called" in the output from the setNormalColorListener listener.
is it possible to get the name of a calling function or the constructor from the called function? is it possible to determine the previous function of the thread?
i would like to call some setter functions from my constructor and have my setter functions determine if it was the constructor that called them.
currently, i'm setting a boolean for this functionality, but perhaps there is another way?
public function Constructor(myNumber:Number)
{
this.myNumber = myNumber;
}
[Code]....
I have a document class name elevator and my constructor is also elevator as usualHow to call this constructor function within elevator class? Is is possible or not?
View 1 RepliesI have a series values I'm passing (from an FLA) into the constructor of a class. I just want to make clear in my mind that, the only way to pass the variable params, to the function nowDoThis, you'll need a dispatchEvent or a custom event to send it along ?
As an example:
Code:
// constructor
public function MyFunction(_param1:uint, _param2:uint, _param3:uint) {
param1 = _param1;
param2 = _param2;
[Code].....
I have only a vague understanding of using objects and dispatch events. Isn't this something that people need to do all the time?
Simplified ItemType Code, contained in Types/ItemType.as
Code:
public class ItemType
{
public static var SWORD:ItemType = new WeaponType(0, "Sword", null);
public function ItemType(id:uint, name:String, icon:Sprite)
[code]....
On attempting to compile, following error is displayed:
Code:
[Fault] exception, information=TypeError: Error #1115: Types::WeaponType is not a constructor.
I'm currently writing a class where I'd like to call the class constructor without having to instantiate the class itself. Something like this : Class:
[Code]...
trace(testString); //wil trace the text "test test123" Is it possible to somehow achieve this? When I write the costructor method like "public static function ClassName" it fails. Is there any other way?
I am new to AS3 and writing classes and keep having a hard time with these error messages I am getting. I have the following AS:
public class PrevNextNav {
public var back_next_nav:MovieClip;
public var next_btn:SimpleButton;
public function PrevNextNav() {
back_next_nav.next_btn.alpha = .3
} .... etc.
The class works fine, except when I try to set the alpha to 30% in the constructor function, I get this error in the output window.
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at _classes::PrevNextNav()
at InteractivePilotDocument()
If I comment that line out, all is good. What does this mean?
I worked out a way to call a function whose name is in a String variable. That is:
function myFunction()
{
trace("Hello!");
}
[Code]....
I have a main.as scipt whereby i put the following in the constructor main function.
L1: LoginScreen.enterBtn.addEventListener(MouseEvent.MOUSE_DOWN, checkLogin);
L2: map.visible=true;
it will execute checkLogin function but stuck at Line 1. how do i make it run Line 2?
Some of the top level classes can be instantiated as well as called as a function (e.x. new Number() and Number(), new Boolean() and Boolean(), new Array() and Array()).
Usually this is used for type conversion or as a shortcut for instantiation. I would like to be able to do the same thing:
[Code]...
What I wanted to do originally was to create a logging class to interact with Flash/JavaScript, and be cross-browser compatible. I wanted to be able to use the log function as an alias of a method in the log class. This got me to wondering whether I could implement a custom casting function just because. I've now realized it's not possible, but was fun to play with anyway.
I am importing several external files using the Loader-class, and one of them is an swf-file. When doing so (I had done it successfully before, so did not expect any issues), I ran into all sorts of errors, and finally Flash crashed.
I put down a trace in the constructor function, and it didn't trace just once, but kept on tracing, suggesting that the constructor was stuck on loop. I guess the loading of too many of the same swf is what causes flash to eventually crash.
Here is my code (the swf im loading is now a simple test-file which contains an image and no code):
private var slides:Loader = new Loader();
public function DocumentClass()
{
[Code]....
I have a class which works with data and I want to do something after its constructor function is finished and the object has been created. If a class is a MovieClip, I can do this:
[Code]....
So I usually use an object in the constructor to receive the parameters like new Class({param1:00,param2:0099,etc).To be able to access those parameters from other functions inside the class I create an object, and copy it:
Code:
public class MyClass {
var params = {};
public function MyClass(p){
[code]....
I've got a simple program that consist of a document class and a buttonTemplate constructor class. I need to call a function called updateText that should be in the document class, when someone clicks on a button. So that after each button is clicked, it updates some text in my document class. My event listeners for the buttons are in the buttonTemplate class. My question is, how do you call a function in the document class from a constructor class? Here is my simplified code below
DOCUMENT CLASS
Code:
package {
import flash.display.MovieClip;
import flash.text.TextField;
[Code].....
How do I call class constructor functions with indefinite number of arguments?
For example:(this piece of code doesnt serve any purpose, just to demonstrate an example)I wish to create a new class Foo with the parameters bar1, bar2, bar3, bar4.
[Code]...
I'd like to get more of the actionscript into class files and off the various time lines. The problem is I can't make it work. I have a class file called dezynworks.aegis.TextPanel Container.I have a MovieClip in my library called TextScrollWinow. Linkage for TextScroll Window: Identifier, TextScrollWindow; class: dezynworks.aegis.TextPanelContainer. Now I read on a web site that dragging the clip to the stage would retain the class association. That is news to me. I thought you had to use attach. Regardless, neither way seems to work.[code]The attach works. The clips appear on the stage, but the class is gone. dummy.init() (a method of the TextPanelContainer class) is never called and the instanceof statement returns false. There are no compiler errors. There are no runtime errors. I've set up test cases in a new Flash file and it all works like I expect.I've tried deliberately gumming up the class name and introducing syntax errors into the class file. It seems Flash is finding the file okay. Something must be failing silently, but I have no clue what and I'm out of ideas.
View 6 Repliesthe difference between Extending and Subclassing with regards to AS3 classes? I've been under the impression that the two terms meant the same thing, but it seems I'm wrong.
View 14 RepliesI've recently inherited an AIR project, which is basically a widget that displays product images and static content (contact details etc) on the desktop.The original project was developed in CS4/AS3, and has been published and works fine. Since then, the original developer has gone overseas and I've been hired to make new versions of this widget, UI reskins, different products, etc. I work in CS3, so I've had the original Flash authoring file saved down, gotten Flash CS3 to be able to publish for the AIR runtime, and found the relevant AIR classes that I need. This has all gone smoothly.
The problem I'm having, is that there seems to be some strange way that the original developer has linked the library items to their relevant classes, and I'm trying to unravel this.I'm going to use the clip called windowApplication as my example.In the library, there is a movie clip symbol called 'windowApplication'. In its linkage settings, its class is set to 'windowApplication', and its base class 'com.aca.windows.Application'.The Application class extends the MovieClip class.However, when I test the app, I get compiler errors
'5000: The class 'com.aca.windows.Application' must subclass 'flash.display.MovieClip' since it is linked to a library symbol of that type.'
'1151: A conflict exists with definition SectionBackground in namespace internal.'
(SectionBackground is the first variable declaration in the Application class. Commenting it out makes this error change to the second variable declaration).
I can remove this error by changing the class of the 'windowApplication' symbol to 'Application' and setting the base class to 'flash.display.MovieClip', however that doesn't seem to instantiate the class properly. The symbol appears onscreen, but none of its instantiating functions are called.
The windowApplication object is instantiated using a getDefinitionByName call. I've had a google and looked around various forums, and I've seen suggestions that classes used in getDefinitionByName need to also have a fake instantiation so that they're compiled in Flash. I've tried this but it makes no difference.It seems to me that the getDefinitionByName call is working properly, as it does bring up the correct symbol - but only when the base class is flash.display.MovieClip.
I had another movie clip, called sectionMain, that also had this problem. Its original class was 'sectionMain' and its base class is 'com.aca.sections.Main'. It, too, threw a compiler error 5000. I changed the symbol's class to 'Main' and the base class to 'flash.display.MovieClip', when testing the app, this brought up the symbol. When I changed it back to the original settings, it worked fine, the object was called properly and I could interact with it. However, when the errors with the Application class are thrown, I also get the 5000 error for the Main class - without having changed anything.When I change the class of the windowApplication symbol to 'Application' instead of 'windowApplication', I get a warning that Flash can't find the class and will create one at runtime.
I would like to take advantage of all the goodness of the newer Vector class for FP10, but it seems it is marked as final. I am doing some intensive mathematical processing in Actionscript, and repeatedly process arrays of Numbers. I have previously been using my own subclass of Array(I call it NumericArray), with added functions such as sum(), mean(), add(), multiply(), etc. This works very well and allows for some clean OO code. However, I am finding through profiling that about 95% of my processing time occurs in the functions of these objects. I need more performance out of these arrays.
I want to use a Vector, as it provides some performance enhancements. I want to specifically use a Vector.<Number>. Unfortunately, I cannot subclass Vector as it is marked final. What is the best and cleanest way to imitate what I was previously doing with a subclass of Array, to a Vector.<Number>?
I have thought about passing around Vector.<Number> variables instead of my custom class and just using utility functions to manipulate, but this is not good OO design and will be a pain to use, not to mention ugly.
If I am a subclass of an Array, how do I access an element?
class ArrayOfFoo extends Array
{
public function getFooAt(anIndex : int) : Foo
{
return this[anIndex] as Foo; // <---- looks for an object attribute (named "0", for example)
}
}
I could wrap an array instead of subclassing it, however lacking a universal IArray interface, that is less than useful for standard and custom functions expecting an Array.
I have a class. I can call the constructor (initialize the class), and the constructor can then call a function/method inside it's own class (so I know it works), but when I try to call the same function/method myself from the instance of the class I just initialized, I get an error.
View 3 RepliesYou can declare variables outside of the constructor in a class, so what is the point of a constructor in AS3?
[Code]...
I do know that you cannot call functions, however what is the purpose of the constructor when the code in the class is executed? Why not allow functions and make it simpler?