IDE :: Passing Properties To Constructor?
Apr 3, 2010
Is it possible to define 'public properties' of an object in the constructor method when you create the object ? similar to..
var leftmain_scrollertext = new TextField({length:10});
I have a TextField and I want to set its maxChars, x, y, width etc.
when I specify one or more of these I get... 1137: Incorrect number of arguments. Expected no more than 0.
am I forced to specify each property I want individually after I have constructed it ?
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Similar Posts:
Aug 11, 2009
I am going through the book gameprogramming university and checked to make sure my code matched.
I am using 2 classes the main class attached to the timeline, and an airplane class that contains a symbol in the library with different frames.
the main class is
Code:
package {
import flash.display.*;
public class airraid extends MovieClip {
[Code].....
when i execute it i am getting the error:
1136: Incorrect number of arguments. Expected 0.
This is at line 7 where it is creating the airplane object.
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Nov 15, 2010
is it possible to obtain the instance name of a class from the class without having to manually pass the instance name as a string parameter to the class constructor?
//Create New SizeClass
var big:SizeClass = new SizeClass();
//-------------
[Code]....
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Sep 30, 2011
I am working on a side-scrolling platformer game. Because of this, I have a class that acts as a floor. I also have a class representing enemies. I am having problems with passing a parameter to a custom class' constructor. The class (SkullDemon.as) extends MovieClip. I am trying to pass an instance (called "floorL1") of a customer class called "FloorLevel1." "FloorLevel1" also extends MovieClip (I do not have a written .as file for "FloorLevel1"; I just exported the floor MovieClip to that class).
I am trying to pass an instance of "FloorLevel1" so that the "SkullDemon" object can land on the floor just like in a platformer. My main class is called "TME2_Main." This is the class from which I try to pass the "floorL1" instance to the "SkullDemon" class. This is how I try to create a Skull Demon instance and pass "floorL1" to its constructor:
[Code]...
What am I doing wrong here? I have spent a while looking for solutions (including moving code outside of TME2_Main's constructor),
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Feb 11, 2009
I 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?
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Jul 15, 2010
I've drawn a pretty button in Flash and given it the Class name PausePlayButton. It extends PlayerController, which allows it to toggle on and off and control whether a MovieClip is playing or not.When I instantiate it, I want to pass a reference to the MovieClip it controls into the contructor so that PlayerController has access to the MovieClip's public methods. However, I can't pass a reference into the constructor of PlayerController, unless I can pass it into the constructor of the symbol itself and call super. But where is that constructor? How do I give the button a reference to another object?
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Oct 30, 2011
I'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.
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Oct 6, 2009
I'm used to building applications using pure AS3. I always pass dependencies into the constructor of classes I make, but this method seems to not work out well for Flex MXML views. It seems like I should define setters on the MXML class, which map to attributes in the tag/class instantiation. But using this method I cannot specify which properties are required and in what order I expect them etc. What is the preferred method to give a Flex view it's dependencies?
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Oct 2, 2010
Am trying to use the Tween class to scale and move a movieclip. Now the movieclip is within the loader, so I need the motion to be controlled by the percentage loaded. Now the code to move the movieclip to its final position is:
var xscaletween:Tween = new Tween(mstone, "_xscale", Regular.easeOut, mstone._xscale, 220, 6, true);
But this is the final location, I want to be able to change the properties of xscaletween, yscaletween, xmovetween and ymovetween as per percentage loaded.As in, within this final boundary limit of the tween, I want, for example, xscaletween, to scale only till 140 till percentage hits 50. Is this possible?? If not is there a workaround?Or do I have to use new tweens within each percentage limit?
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Sep 7, 2010
I'm trying to pass some properties to a component I've created in Flash Builder 4. In my example below I want to pass the "label" property to update the label property of the Button.
// MyApp.mxml
<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="[URL]"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
xmlns:local="*">
[Code] .....
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Sep 14, 2005
Just been playing around with the tutorials, on the Set properties/Get properties. Everything is all cool, except the "instance name" aspect. I dnt really understand that too well. Is it possible to change an Mc Name dynamically? If you look at my FLA when you hit the top left red button you will get a trace of the mcName as "square". Now if you input a new mc Name on the right hand side, you will see it change on the left hand side. But i want to know why it doesnt remain as the new mc Name, it still goes back to square.
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Jan 30, 2008
I forgot to put it in the title so I'll just place it here; I am using AS 2.0. I know that there are other ways to accomplish the goal that am after, but I was wondering if anyone knows of a way to access the properties of an object's properties?
Here is the code that I thought of, even though it doesn't work
var a:Object = new Object();
a.bproperty = 0; //lowerlevel properties
a.cproperty = 1; // lowerlevel properties
[Code].....
This really just boils down to how I am organizing the code(I have ideas on what do next, and i am 99% sure that I can get them to work), and if there is a way to dynamically access the properties of the objects properties, It will save me from creating yet another large block of code for my project. If you want to see the unfinished project, go to [URL]
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Jun 25, 2010
i'm attempting to cast an object's property as an actual property of another object. here's my object variable: var propObj:Object = {prop:"width", width:50}; now i want to assign the property of a sprite using that object's properties. var sp:Sprite = new Sprite(); sp.(propObj.prop as Sprite.property) = propObj.width; now, i'm not even going to try that because i know the compiler will explode all up in my face. but you should be able to see what i'm trying to do. why i'm trying to do it is because i'm reading in an XML file with an undetermined list of usable properties for specific objects. so instead of writing something like a huge switch statement to evaluate whether the XML file has a value for that specific property, i'm trying to assign properties dynamically based on what's available in the XML file. if what i'm trying to do is possible, what's the best way to do it?
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Sep 7, 2010
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.
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Jun 23, 2011
You 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?
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Feb 11, 2011
there is a better way to abbreviate the following code??[code]
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Mar 22, 2011
I'm getting an error that says Method cannot be used as a constructor - and I can't seem to find what that means exactly.
Here's my code (the line that is getting the error should be in bold):
stop();
var currentAnimation = new mapIdle;
makePlay();
[Code]......
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Aug 28, 2009
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.
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Feb 24, 2010
I'm having a problem with a .swf which when loaded into another .swf has its constructor function ignored
when i'm running local it works fine, but when theres a real loading the constructor doesnt run, also making timeline code ignored ( since timeline code is just addScript call in the clip constructor)
anyone else has had this problem?? same problem happens either using Loader class or BulkLoader, also happens when simulating download in the IDE
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Sep 22, 2011
I have an object that has been added to the stage, exported properly for actionscript, and given an instance name.It's class file is this:
PHP Code: [code]....
And yet none of this works. The trace doesn't even go off, meaning the constructor is never activated. It's linked properly; if I go to the movie clip's preferences and hit "edit class file" it takes me to the proper one.It's possible that the problem lies with the frame numbering. The first time this object is added to the display list is in Frame 2...and it says "export in Frame 1" but I'm not exactly sure what that means or how it affects the class definition or how to get around it. I tried adding it (var sb:SoundButton = new SoundButton in the first frame,
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Oct 11, 2009
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?
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Feb 11, 2009
I have a shuffleList.as file with this code...
[Code]...
When run this file the compiler report this error: "A constructor cannot specify a return type." Where I'm wrong; I'm new in actionscript..
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May 8, 2009
I have three classes (shown below, after the problem description).The first class (InteractiveStrategy) is the main class definition. In there I declare and instantiate two variables, download and upload, both of DataTxRx class.
On instantiation the folowing error pops up>> 1203: No default constructor found in base class strategy:DataTxRx public function Question(){ The second class, DataTxRx does two things only, either to download data or to upload data. As shown in its constructor, if the required parameter 'direction' is equal to DOWNLOAD, it calls the DownloadData() function. Similary, it calls the UploadData() if the required parameter is equal to UPLOAD.
The third class, Question extends the DataTxRx class, but itself has no constructor. However it has other methods(not shown) for adding, modifying and deleting questions anomg others.
package strategy{
import flash.display.Sprite; import flash.events.*;
import strategy.*;
[code]....
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Feb 10, 2010
I'm getting the following error:TypeError: Error #1007: Instantiation attempted on a non-constructor.at Website()[/Design/The Silver Collective/_classes/Website.as:42]
This is line 42:var top = new top();
package {
import flash.display.*;
[code].....
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Feb 14, 2010
what i am trying to do is by pressing zero_btn which is an object in the library to print a number in the dynamic text box ( result_txt ) which is also an existing object in the library and on stage. my knowledge in actionscript is not much and messing with .as files is totally new to me! then thing is that this code when i locate into to .fla file works fine. there is no error with the code i posted, but am sure something is missing ... like calling the constructor of the .as file.In the library the name of it is Zero_btn and the instance name of this object is zero_btn and it is a button.[code]
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Mar 10, 2010
am 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].....
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Jul 28, 2010
I'm gettnig the following output on the code below - Its driving me mad trying to find th eproblem..
TypeError: Error #1007: Instantiation attempted on a non-constructor.
var nc:NetConnection;var ns:NetStream;
var nsPlayer:NetStream;var vidPlayer:Video;
[code]....
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Jul 2, 2011
I'm making a kind of image showcase, what has a fluid width and height, depending on browser window dimensions. Everything is okay, I have other kind of issue: in constructor function in this gallery class I can't use stage property, I have to get it from main class. Why Flash treats me this way and how I can avoid this currentStage variable?
Main code:
package dev {
import flash.display.Sprite;
import flash.display.StageScaleMode;
import flash.display.StageAlign;
import flash.display.MovieClip;
[Code] .....
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Jan 9, 2010
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?
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Mar 16, 2010
In Flex ActionScript, a new object can be instantiated via the parameterless constructor with or without (). Example: var array:ArrayCollection = new ArrayCollection()
var array:ArrayCollection = new ArrayCollection
Is there a difference between the two? Is one preferred over the other?
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