ActionScript 3.0 :: MovieClip References From A Class?
Jul 15, 2009
I have a files that has movie clips and nested movie clips on the stage. I am now writing a class and want to give the MCs event handlers and other properties.
When I do something like the following: myMC_mc.MyOtherMC_mc.mouseEnabled = false;
I get the error: 1120: Access of undefined property myMC_mc.
I added this to the top of my class and it seems to take away the error, but I thought this was not needed in AS3 anymore.
private var myMC_mc:MovieClip;
private var myMC_mc.MyOtherMC_mc:MovieClip;
What do I have to do to not get the error? How is this done right?
I have some classes that I want to be able to target them in xml.[code]...
the two ways I know of to embed the class is to associate it with an exported symbol or just reference the class name somewhere in the code (like just sticking the reference in the document class constructor)[code]...
i retrieve a list of instances located in a array to manipulate them in a variable holder. Normally, the operations can be made between two instances stored in a simple variable to variable fashion and it works realy fast.I analysed two main operations: retrieving references in a array to a variable and get or set a value from the variable reference.Here are the objects used to perform the test operation:
var v4:Vector.<Person>= new Vector.<Person>();//List of Persons instance var refHolder:Person; //Typed referencevar refHolder2:*; //Not typed reference Test #1: looping 200 000 times and only retrieving references from the array v4.[code]........
So my conclusion with that test is that with a typed reference you spend more time assigning a reference than manipulating a value from the reference With a not typed reference, the time spent is in manipulating the reference in the variable.Which one should i use or what should i do to have better performance with manipulating references from arrays?
Here are the files i used to test this: reference.swf //Online example reference.zip //Source file
I'm pretty new to working wth custom classes, but so far everything has been working great - up to the point where I create more than one instance of the same kind of class. For example:
[CODE]...
Do I simply have to call the arrays different names??? I really don't want to, shouldn't by creating two different instances you subsequently create two different arrays in turn?
loading external SWF's and its class files hanging around after the movie is unloaded....Its kind of tricky to explain, but you can see it very clearly in this file... http:[url]...Just run the main_stage.fla within flash [mx 04] and you'll see that if you click "Tester A" it will trace out "My Name is Tester A", then if you click on "Tester B" it will load a different swf, with a different class, but still trace out "My Name is Tester A" when it should be "My Name is Tester B"....
I have tried, unloading the swf's, removing the mc_Dropper and re-attaching it, re-declaring the variable testObj as null before declaring the class,
I have a movie clip in which I have a number of sub movieclips. The number of sub movieclips can vary, so I would like to keep track of them in an array. I am doing that like so:[code]The trace seems fine, showing the names of the correct sub movieclips, but when I try to change the alpha I get this error: TypeError: Error #1009: Cannot access a property or method of a null object reference.
I am just starting to learn Flash. I am trying to make a "simple" Flash menubar to add to a basic html/css site I am building, as a learning project. I figured out how to make the navigation "buttons" using frame labels and event listeners. All the nav buttons will be identical, except for an image and the link destination. I know enough about ECMA based code to be dangerous to myself, so rather than make 7 individual buttons, each with there own AS and objects, I am wanting to make it more efficient by reusing the redundant information.
This is the logic than I am trying to use:
Create a generic button named "button_mc" that has a child which is a variable instead of actually pointing to a specific object. Then, create 7 different instances of that object (button1, button2, etc), and in each instance assign the proper image (contained in a mc) to the variable that is in the parent object.The problem I am having, is that I can't figure out how to make a variable that will reference a movieclip or graphic.[code]...
I'm loading a bunch of images into my AS2 flash movie, and I've encountered some strangeness.
Roughly, my code looks like this:
function doTheLoading() { m_imageClips = [];
[Code].....
why does my array content seem to change when in the onLoadComplete call? If the array is out of scope, then why can I still see the length of the array and determine the type of the contents?
I built a custom designed checkBox. The movieclip is in the libary and dragged onto the timeline of my .swf. I'm using CS4 & AS3. I'm using procedural AS3 instead of OO AS3.The checkbox movieclip has a child movieclip inside of it so I can apply a drop shadow filter to some of the graphics .When I put an eventlistener on the custom checkbox it works fine but when I try to reference the checkbox movieclip inside the eventlistener function, the event.target.name is referring to the child movieclip (just a graphic with a drop shadow filter).From my reading it looks like the function propogates down to the child movieclip but I don't want it to do that.How do I reference the parent movieclip? or
B. stop the eventlistener from propogating down to the child movieclip?
I tried using stopPropagation(); but it didn't stop the function event.target.name from trickling down to the child movieclip.Here's what AS3 looks like.The trace statement displays "step3_mc.cbEmail_mc.instance25"instead of what I need "step3_mc.cbEmail_mc"
step3_mc.cbEmail_mc.addEventListener(MouseEvent.CLICK, fnc_cbClick);step3_mc.cbAgree_mc.addEventListener(MouseEvent.CLICK, fnc_cbClick); function fnc_cbClick(event:MouseEvent):void {[code]....
I want to create a movieclip class that subclasses another movieclip class and inherits all its properties (rather than having to rely on the include statement). In my project I'm using:An abstract parent class that extends a movieClip: "infantryDroid".[code]However everytime I try this, flash acts as though nothing was imported from the parent movieclip class.If I was to try the above code I would get the message that _root and speed (which were defined in the parent class) "are undefined".
If I have a Document class that extends MovieClip, and I want to use it as the basis for another Document class, is it possible to create a subclass that extends the main document class and use that for a different FLA?
For example,
fla1.fla has a document class of MyMainClass: public class MyMainClass extends MovieClip fla2.fla has a document class of MySubClass: public class MySubClass extends MyMainClass
I've tried, but now I'm getting errors that all of my variables that reference stage instances aren't being found.
Ok, this is one of those walls that I know once I can jump over it, I will be a much happier developer again.
I've done tons of reading, and think I have a firm understanding that the general consensus is that if you want to reference something, it needs to be added to the display list, using addChild().
I hate to be defiant, but what if I don't want to?
Or at the very least, what if I want to add a movieclip class to the stage using addChild, and then reference objects inside it?
It is much easier this way than what most people recommend - adding 15 objects via addChild, then setting the x and y for the, etc.
That said, I'm all about using classes and using as3 the way it was meant to be used. So what this is, is a best practices question I guess.
HERE ARE THE STEPS I'M TRYING:
- Create new flash document
- Draw graphic symbol bg, with text field over it, select them, convert to movieclip symbol, and export class name "box", then delete it from stage
- Add document class .as file, which simply adds that class "box" from the library, to the display list using a simple addChild()
- Set a name for that box using box.name = "test" let's say
- Do a simple trace like the following - "getChildByName('test').textFieldName" - it shows up great
- So then, I'll now try to set the text by doing this - getChildByName('test').textFieldName.text = "yo";
That last line above, is what doesn't work. I know I'm referencing wrong, but how would a pro as3 developer, reference something on the stage within a movieclip class, from the document class?
How can I run function of the main document class from a class of a MovieClip? I usually just used MovieClip(parent).function(), but now my MovieClip has another parent. Or what do I have to pass to the MovieClip class when creating the MovieClip to acess the main document class?
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."
I'm trying to build a shuffle function that somebody gave me into my card game. I two external .as classes; one is Shuffle.as, which is my document class, and the other is card.as. I'm building the shuffling function into Shuffle.as. I think I'm getting close to making it work, but there are some problems. I keep getting this error message: "5000: The class 'Shuffle' must subclass 'flash.display.MovieClip' since it is linked to a library symbol of that type." Here is my code. Shuffle.as code
Going further on my app, I felt in another problem. Despite having lots of posts on the web regarding this, none of the solutions worked for me In my document class (Main.as) ve two containers. One empty and another with a star that is being imported from the library. Here´s the main class:
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 movieclip instance named 'placeholder' on the canvas, and I want to change the alpha of the named movieclip from it's class without effecting the alpha of all the movieclips of the same type. How would I specifically target the named movieclip instance that is on the canvas?
I'm trying to do a cleaning of some classes that is added into a MovieClip, but I can't seems to set the MovieClip(Class) to null. What is the proper way to do it?
private var mcHolder:MovieClip = new MovieClip()[code].................
I have made an interface called IHero i implement in my hero.as3 class.the hero class is written so it can be inheritted in a movieclip class to handle movement etc etc. But somehow i can't figure out how to code this with a good practice.How should i do this?I want to have a movieclip that would be a hero i will use as a main character in a rpg game. Should i just implement the IHero in the movieclip class or?
package com.interfaces { public interface IHero[code].....
I'm writing an application where I have many objects (data models) that are identified by a unique String ID that every such object possesses and these objects can refer to each other by their IDs.So far so good but now I need to keep track of which object keeps a reference to another object and of course there are cases where an object references (or is referenced by) more than one other object and I was wondering what would be the best method to store these references? In a simple map data structure I could just map one object's ID to another but as mentioned there are cases where an object can hold a ref to an arbitrary amount of other objects
Types like Movieclip , String, Object act as references when declared and defined, while types like int, Number are primitives. Why such difference has been made. Why not all of them can be primitives ?
