AS3 :: Create A Class For My Library Symbol That Extends AvSkin?
Jun 15, 2011
I'm having an issue using a class I've created as the base class for library symbols: I've created a class AvSkin which will act as the display for an instance of AvChild. It looks like this:
Library symbol "Card" is linked to class "Card" which extends "MovieClip". Library symbol "Card" contains a card background image.Library symbol "Ace" is linked to class "Ace", which extends class "Card". Library symbol "Ace" contains a TextField with a big letter "A".So we have Ace extends Card which extends MovieClip. Ace therefore extends MovieClip, but does not DIRECTLY extend MovieClip.When I drop an instance of Ace on the stage and compile the clip, all that shows up is the big letter A. However, I expected the background image from Card to be included, since Ace extends Card, and the Card symbol contains the background.It seems like Flash ignores symbol content unless it belongs to the top-level class being instantiated.I think it's LAME that one symbol can't extend another. The IDE could easily draw Card as a non-editable background while I'm editing Ace which extends it, and it should instantiate Card's content and then Ace's content when an Ace is instantiated.
i try to migrate from as2 to as3 and i have one problem When i attachMovie from library (addChild in as3) and i add custom property its work fine.Here is ex.
Code: var i:int; for (i=0; i<5; i++)[code]....
when i attach to that symbol custom class in the library.i got the error: #1056:Cannot create property...
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.
I created a movieclip symbol and exported to actionscript, I created the .as file:
class BRIQUE extends MovieClip { function BRIQUE() {
[Code].....
"graphics" is an image imported on the stage inside my symbol, but it seems not to be accessible this way (I get an error), nevertheless it works this way in as3 then what is the right way in as2 ?
i came across this problem and i have no clue why it's happening. basically, consider 2 nested movieclips on the stage, something like stage -> main -> filler. both movieclips have instance names (main and filler).
[Code].....
this throws an error 1119: Access of possibly undefined property filler through a reference with static type A. can anyone give me a hint on that, as it works with class A, but not B extending A? i understand it was meant to work?
I am trying to create an AS 3 class that extends DopDownList (Spark) but behaves differently than your classic DropDownList. The difference is that when a user selects an item from the list, he cannot just click on the item. The user must "mouse-down" on the item, drag it over to the right, then "mouse-up" and then the item will be selected. The purpose of this is to act like a safety feature so the user doesn't select the wrong item. I am new to AS 3 and I am stuck on how to do this. I've been playing around with different events and methods for the last few days, but to no avail. If anyone could give me an idea on how to implement.
googled it and hardly found any answer(seriously)need a quick solution for this:- How to create object from class that extends MovieClipSay i have a class name MC
When you import a PNG into the library, Flash creates a symbol as well. It doesn't do this for JPGs, so I'm wondering if there's a setting that I can change that. I don't want it to create a new symbol. If it can't be changed, can anyone tell me why it does it for PNG and not JPG?
Can any answer the following questions and maybe point me to a "for dummies" tutorial on 'Classes'. I have the books but they have seemed to disappoint me. Unfortunately I can never ask "why" when reading a book.
1) Does a Class file need to be attached to a library symbol?
2) How do you know what to import?I know this sounds funny but should you always import flash.display.MovieClip? I just want to create a line using a class to begin with and call it from a flash swf with two parameters (start and end).Wouldn't it only need to be a import flash.display.Graphics
3) What is "Base class is final."? Anybody had this error before?[code]
i have a fla document with a symbol in the library (which i set Linkage ID). i have also two classes : for example parent and child that parent class in a loop places some child copy on the stage.
how could i send my symbol in the library to the child class (from parent class) properly?
Code: //in fla document var myParent:parent = new parent(mysymbol); //create 7 child myParent.createchild(7);
i need to have NEW symbol copy in for each child instance.
Im character rigging so im making nested symbols.i was wondering how do i take these nested symbols and create a re-usable symbol library and import these into different files for use.
I am new to AS3, as well as Flash in general, so forgive me if this seems highly elementary. All I am trying to do is create a custom class that extends the MovieClip class and contains a custom property of "marker". I want to be able to use and change the value of this custom property on the timeline for an instance of this class and have it behave just like any other (Ex: this.x ==> this.marker).
the idea is to create a loop to that displays 16 cards face down in two rows and eight columns using either a "for" loop or "while" loop, execute 16 times once for each clip.use new to dynamically create card instances based on the Movie Clip symbol in the library.use a modulo operator to operate the x position of each clip use Math.floor to operate the y position of each clip set dynamic text value of the card clip to show appropriate card number add card to the display list if using the iteration variable ("while" loop).this is what i am using and i get one card (the stack of 16) in the bottom left hand corner with a 16 trace statements of "instance 2"
//create variable for number of columns var numberOfColumns=8; // requirement 1
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.
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.
what i want to do is, when certain button is clicked, replace a certain symbol(button) by another symbol(movieclip) stored in the library. i try things like loadmovie("","") to replace the symbol from a external jpg, but some how it does not align even both images are exact dimension. can i replace an image straight from the library?
I am trying to create a dynamic class from a symbol in an embedded swf, basically I need to be able to add arbitrarily named properties for some exciting math, but it appears the only way is to create a dynamic class.
[Bindable] [Embed(source='ExternalAssets/Assets.swf', symbol="assetName")] private var AssetNameObject:Class;
Flex complains if I want to create an object from a library symbol with linkage: 1180: Call to a possibly undefined method [linkage name]. So to avoid this, I create a class for that symbol, in this case extending BitmapData using Flex's new ActionScript Class feature. Flex create that class for me and the constructor looks like this: public function CustomBitmapData(width:int, height:int, transparent:Boolean=true, fillColor:uint=null)
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.
I'm not really asking how. What I'm asking is, is it possible? And I ask because I thought it was not - certainly it didn't work in AS2 - and yet that's what I appear to have done. Am I going crazy? Structure: A SWF (#1) with a class NewActivity that extends class AActivity. Another SWF (#2) with a shared library of code in it, including AActivity. A third SWF (#3) which loads the library followed by SWF#1. Here's what happened: I didn't expect AActivity to be able to be shared. I mean, it should be compiled no matter what in SWF#1, as SWF#1 includes a class that extends AActivity. I had added some properties to the AActivity class, ran the project, and when SWF#3 tried to set those properties I was told they couldn't be applied. "Of course", I said, "I need to recompile SWF#1, because the code is now out of date. The version of the class there doesn't include these new properties.".
However, that didn't work. I got the same problem. Maybe, I thought, there's a definition conflict between SWF#1 and the library, so I removed the AActivity class from the shared library in SWF#2 for the time being. Only SWF#1 uses it, and it should already be compiled into SWF#1 as, like I said, it is extended by another class there. But when I ran the project, I was then told that the AActivity class could not be found at all! Looking at SWF#1 in a decompiler, there is in fact no mention of AActivity (I had up to this point assumed it was implied). So this left just one option: I needed to recompile the library in the first place, not SWF#1. I added AActivity back to the library, recompiled, and it worked.
To check I wasn't going crazy: I added a test property to the AActivity class and recompiled the library. The containing project - SWF#3 - then set this property on SWF#1, which had NOT been recompiled, and then read it back out. No errors. I should point out that the getting/setting of this property is done through an IActivity interface - AActivity is not being accidentally compiled into the main project (SWF#3), and the decompiler indicates this also. Am I going nuts? I really didn't think having a runtime shared super class was possible in any way. If it is, that opens up a whole new world of awesome, even though I've created this project on the basis of that being impossible.
I create a dot as a movieclip in the library. also i set the linkage to Dot class. Is it OK to create an external class Dot to associate with the movieclp inside the library? if it's ok. I would like to ask that is there any wrong in my code?
Code: package { import flash.display.MovieClip; import flash.events.Event; public class Dot extends MovieClip { [Code]....
I want to create a complete (and real) 2-dimensional array. In order to use a maximum of Adobe code, I want to use ListCollectionView which can manage sort and filters. But to use a second dimension, I need to override getProperty method, like following code.
In AS3, I'm trying to check whether an object is an instance of, or extends a particular class. Using something like if (object is ClassName) works fine if the object is an instance of ClassName but not if it's an instance of a class that extends ClassName.
Pseudo-code example:
class Foo {} class Bar extends Foo {} var object = new Bar();
I'm creating a mask effect. i create 10 movieclip with a library class reference that appear on the screen with a random alpha effect. THe problem is that if i try the effect alone all works ok. if i mask the layer that contains the effect on an image i don't see the effect. i see directly the image masked with the boxes. i can't explain that because i've the effect first but it seems that when i test the movie the effect doesn't play and the boxes appear directly on the screen.
