I fell on an unexpected comportment with AS3 class definitions this morning. To tell it quickly, I cannot create an instance of a class inside the same class methods.
Here is an exemple :
package {
import flash.display.MovieClip;
import flash.events.Event;
public class Test extends MovieClip {
[code]....
I would like to understand the sub-process that prevents to do that.
I am creating a Weapon class for a game and the weapons itself will be the sub classes. The sub classes will hard code some values (such as max ammo and the weapon name).
I trying to access this declared data in the base class constructor, at the moment it's not outputting the values. Is this possible?
I've broken my Weapon class for simplicity:
ActionScript Code:
package
{
import flash.display.MovieClip;
[Code]....
My current workaround is creating a protected method in the base class to trace the information and calling that method in the sub class's constructor, this works fine but this doesn't seem like the most efficient technique?
In the following code (thoroughly debugged) the first case (1) in the switch is met and a new instance of BannerSingle is assigned to retVal (the return value). Unfortunately, while the second case (2) is never met, the assignment therein to retVal takes place and I can't compile. When I comment out the assignment to retVal for "case 2:" everything works fine.
I've tried using an if/else instead and I still get the same odd behavior. Also tried a number of solutions involving separate variables, etc.
package fl {
import fl.IBanner;
import fl.Banner;
[Code].....
I want to clone a class object. I tried following from here:
package
{
import flash.net.registerClassAlias;
import flash.utils.ByteArray;
[Code]...
BUT this only works when the class has a default constructor and not when it has parameterized constructor:
how to clone a class object when the class has a parameterized constructor?
I am trying to things efficiently and put as little code as possible on the timeline.
I have a document class loading and working at runtime.
It creates a button that takes me to a different frame on the timeline.
I have a movie clip there. I put a trace in the constructor of the class of that movie clip but it will not show the trace comment in the output window-its not working. There are no errors.
I also tried instantiating the same movie clip from the document class-which worked-but the trace in it's class's constructor still does not output.
I'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 Repliesam trying to pass a movieclip reffrenc to a class, but i want it to be optional, so am trying to initialize it, but it dossent work, why?
public class CoverFlower extends MovieClip
{
var playBtn:BigPlay = new BigPlay();
[code].....
For Example:
package{
public class A {
var test:String;
public function A()
}} class B{
}
The code is in the same file, we call B is inner class, then how to call the constructor of class B
I'm doing something - probably very stupid - with an external library swf. That swf so far contains two buttons each with their own classes 'Simple_Button' and 'Simple_Pop_Button'. In the library swf document class I set up an object that lists the available classes:
Code:
oClasses = {"Simple_Button":"com.Home.Button.Simple_Button",
"Simple_Pop_Button":"com.Home.Button.Simple_Pop_Button"};
In the swf that loads the library swf I process that object and create another object with proper class references based on it:
Code:
function initHandler(event:Event):void {
defineLibraryClasses(event.target.content.getClasses(), event.target.loader);
addBtns();
}
[Code]....
i have some pretty simple code, i have my document class trying to add a santa class to the stage (simple game ) - but it will not add and i get not errors at all,Santa class:
Code:
package Classes {
import flash.display.*;
[code].....
I have a custom class, MyMC. The only argument the constructor takes is a string, which sets the text of a label inside MyMC.
In the Flash IDE I've placed an instance of MyMC, which is called mcOnStage, on the stage. Through the document's class Main I'd want to perform the constructor function of mcOnStage.
I have a bunch of sprites in my library which all behave in the same way.
now i want to put the behavior and all the common methods into one BaseClass [code]...
In the AS3 there is a remark, that a Class Constructor is just a method of the class, that is executed when an object of that class is created. So, since the constructor is just a method of a class, how can I call it directly from the other class methods?
View 8 RepliesI'm working on my document class and the contructor is running twice, hence it is running almost all of my code twice.[code]
View 5 RepliesI'm trying to pass my object class as constructor argument. I have something like this:
package myclass {
import flash.display.MovieClip;
import flash.display.BitmapData;
import flash.display.Bitmap;
[code]....
Now, when I try to create my Example:
import myclass.Example;
var example:Example = new Example(myObjClass);
I get message, that I'm not passing any variable (Error #1063). Why is that? What is wrong with it?
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 want to pass values to document class's constructor form html while embedding.
View 2 Repliesconstructor function in a Class file. I've built several over my day and never heard a 'proper' answer about them. If your constructor function does nothing, not even set vars or listeners
ActionScript Code:
public function MyClass():void{
}
is it proper to keep it in the Class file or is it ok to leave it out completely?Or is this just something of preference? What do you guys think/do?
I have created a class:
Code:
package net.icsna.website
{
/**
* ...
* @author Kyle McKnight
[code]...
And then I create a new instance of the class:
Code:
var scroller:Scroller = new Scroller(_contactDisplayPage.getChildByName("contactInfoHolder"));
And I'm getting an error 1136:Incorrect number of arguments. Expected 0...
i have been working on this project. I made a class with a empty blank symbol.
package {
public class imgHold extends MovieClip {
public function imgHold (imgSrc:String)[code]....
I want to be able to add this class on my stage and put in a string in the contructor parameter and the class will display w/e symbol accordingly. How would i make this class link to different symbols depending on the parameter in the contructor?
How to create new class instance without calling constructor function, meanwhile constructor function must exist and is requiring 1 parameter.
var newclass:myclass = new myclass; <- still calls function myclass in myclass class
I would like to call constructor function later:
newclass.newclass(myparam);
This is my first post. I'm new to actionscript, but not to programming. I hope to learn a lot from these forums. To the point: I decided a few days ago that I wanted to create a flash game. I'm taking an object-oriented approach to the game design since that is what I know. The issue I am having is that I have a class called Hero that inherits from a class called Entity. Now my issue is that I don't want Hero to call the Entities class constructor when I initialize a new Entity.
View 5 RepliesI'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 have flash application with main document class, components which are on the scene are instancied at runtime, contrustor of these components are call before main class, but i'd like to execute code before main class and components instanciation, how can i do this ? i tried to create an actionscript layer at frame 1 but still not work.
View 4 RepliesI'm having trouble with the constructor for a custom Class tied to a library MovieClip.
Say I have a MovieClip in my library named Circle, which is tied to the class com.shapes.Circle . I want the Circle class contstructor to take 2 arguments, xScale and yScale:
public function Circle(xScale:Number, yScale:Number) { }
However, if I try to call that from in code, for example Circle ball = new Circle(3.14,2.0); , I always get an "Incorrect number of arguments. Expected 0" error.
Is it possible to have a custom class tied to a MovieClip that can take arguments, or does Flash not allow this? I'd asked about this before and thought I figured it out, but from looking at it now I apparently hadn't figured it out and had resorted to a sloppy workaround; I'm hoping to fix it now.
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 want to create an instance of a subclass from inside a static superclass method. Here is an example:
class Base
{
public static function createSubclassInstance()
[code].....
Possible Duplicate: Where is the "proper" place to initialize class variables in AS3
Whether its better to instantiate class on it's variable declaration or within a constructor? For example, this:
protected var _errorHandler:ErrorHandler = new ErrorHandler();
or this:
protected var _errorHandler:ErrorHandler;
public function someClass() {
_errorHandler = new ErrorHandler();
}
what is the difference between something like
package {
public class Myclass {
var txt:TextField = new Textfield();
[code]....
I have a bunch of movieclips( clip A and B for this example) in my library that I want to use the same base class (MyClass.as in my example). I assigned the same base class in each clips property window and then gave each clip a unique class name which doesn't exist so flash says it will create the class automatically.
Now if I create a bunch of A's and B's on the stage via actionscript, how would I send variables to the constructor in MyClass.as without having to creating A.as and B.as to pass the variables along to the base class? if I do: Var newA:MovieClip = new A (argument 1, argument2, etc) It says it expects 0 args since the A & B classes were created automatically by flash.