Actionscript 3.0 :: Does Class File Need To Be Attached To Library Symbol
Jun 12, 2009
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]
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Dec 9, 2010
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.
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Dec 11, 2010
I've created a simple class that defines a scrollbar to scroll content. I've applied this class (ScrollBox.as) to a movieclip in the library as the Base Class.
Now, I'd like to add this movieclip to the stage with AS3. So for the Linkage, I've given the movieclip a class name of 'AboutBox'. This is the code I've written to add it to the display list[code]...
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Dec 10, 2010
I've created a simple class that defines a scrollbar to scroll content.I've applied this class (ScrollBox.as) to a movieclip in the library as the Base Class.Now, I'd like to add this movieclip to the stage with AS3.So for the Linkage, I've given the movieclip a class name of 'AboutBox'.This is the code I've written to add it to the display list:[code]
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Mar 17, 2009
I have the following as code in a separate file placed in the root folder of the swf file. The as file is the class for a MovieClip in the library.When i manually place the library symbol on the stage, the MC works fine and draws the square with the nodes. However, when I try to create a copy using ' new sqMC();' code, I get an error.
Code:
package {
import flash.events.MouseEvent;
import flash.events.Event;
import flash.geom.Point;
[code]....
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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:
package avian.environment.skins
{
import flash.display.DisplayObject;[code]....
Is there a way around this? I don't want to do either of the following:
Make AvSkin extend MovieClip.
Create a class for my library symbol that extends AvSkin.
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Nov 9, 2009
I have a movieclip library symbol exported for ActionScript with name McFloor and identifier McFloor and I'd like to access it from OneChart class.
[Code]...
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Sep 6, 2009
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.
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Oct 31, 2008
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...
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Sep 16, 2010
I have built a component, but the assets do not appear in the symbol library of the destination fla when I drag the component to the stage. This is fine, except that I have embedded a font in the component. To ensure the font exists in the destination swf, it must exist in the symbol library of the destination fla.My component extends the UIComponent class, and I have a component shim, although I'm still not entirely sure of its functionI have followed all of the steps found in the 9 part MenuBar tutorial, and everything works, except for this one issue.
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Jun 7, 2009
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.
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Nov 15, 2011
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.
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Dec 25, 2004
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?
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Oct 1, 2009
I have imported a font into the Flash library in an FLA file this way in the New font symbol dialog box:
[Code]....
I'd like to assign this font to a TextFormat instance, but as you can see, something is wrong or missing. But what?
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Apr 10, 2010
Attached mcs from library are totally different sizes.I'm attaching them for my gane but they are totally different sizes. If I scale them that doesn't help because then the big ones become too small.If I fix their size and width some look ridiculous.Is there anything I can do?
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Sep 7, 2006
I need to mask a text or mc by the attached mc from the library. I used this code, but it doesn't work to me:
i = 0;
function makeMask() {
_root.attachMovie("mc", "mc"+i, i);
_root["mc"+i].i = i;
[Code].....
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Feb 12, 2008
I used the tutorial posted at http:[url]... Now I have a button on my stage that attaches a movie from the library.
on (release) { this.holder.attachMovie(contents�,�contentslinks� ,1); }
It works fine but I also have buttons inside the attached movie clip that need to control a movie that is already on the stage.
contentslinks.contents_link_1.onRelease = function() { content_mc._visible = false; book_mc.directGotoPage(4);
If I just place the attached movie on the stage the buttons work but I when I proceed to use attachMovie, they do not work. How do I get the buttons in the attached movie to address the movie that is already on the stage?
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Aug 13, 2009
I've created a movieclip in my library which has, among other things, a dynamic text field. This text field has an instance name of "txt".
I then attach this movieclip and want to set the txt instance, but I get an error:
Code:
1119: Access of possibly undefined property txt through a reference with static type flash.display:DisplayObject.
Here's my code:
Code:
var mcLoader:DisplayObject
public function MainClass() {
mcLoader = addChild(new MainLoad)
[Code]....
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Apr 12, 2004
How do I make a preloader if I have only attached movieclips from the library, I know how to make a preloader but not for attached movieclips. The movieclips are attached from level 0 to 12, and I want one preloader to preload all levels at once, how do I do that? Tried with a for loop to loop through all levels but it didn't work.
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Apr 12, 2004
I have a little problem, How do I make a preloader if I have only attached movieclips from the library, I know how to make a preloader but not for attached movieclips. The movieclips are attached from level 0 to 12, and I want one preloader to preload all levels at once, how do I do that? , Tried with a for loop to loop through all levels but it didn
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Jun 1, 2007
I am having problems accessing a button after I have attached it to the stage from the library... My code is as such:
[Code]...
On the rollover - the movie recognises nothing as executable. OK >> Yes - I have linked in the properties, an identifier for AS Export .. for the original map_functions, inside it is an MC called close_mc - This MC is linked for AS Export as close_mc Why is this not working? PS. the function calls are from Lacos Tween engine.
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Feb 9, 2010
When I have a class linked to a MovieClip in my library and that class takes an argument in its constructor method. That class will compile properly ONLY when it's located in my top-level directory (same dir as the .fla and Document.as files). If I move that class to a deeper directory, say com.place, and update the package statement and symbol link appropriately, the compiler will generate error "1136: Incorrect number of arguments. Expected 0."Create flash project and put a rectangle on the stage. Covert it to symbol and assign it to class TestPanel - or whatever you choose. Also configure the fla so that is uses a Document (Main) class.Create Main.as and TestPanel.as in the same folder. In the Main class, instantiate a instance of TestPanel and add it to the stage. Flash will, predictably, add the rectangle symbol and everything is fine.Now modify TestPanel so that its constructor method takes a Number and have Main.as pass some number to TestPanel.[code]You now get the error: 1136: Incorrect number of arguments.Expected 0.When I move the TestPanel.as into a deeper directory, Flash somehow is looking elsewhere for the base class for Symbol, even though I'm mapping that Symbol to com.place.TestPanel.
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Jun 8, 2010
I duplicated a "Contact" button, movie clip symbol.Trying to edit the text "contact" in the new button but the text tied to the old button keeps getting changed.I duplicated the text symbol that is tied to original "Contact" button.Tried changing the new button again but the link to the old button is the one being changed.I can't seem to find where to unlink the text symbol attached to the original button and then add the new text symbols the duplicated button.
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May 31, 2011
I have 2 SWF, one of them (let's call it Resources.swf), that contains several symbols (most of them MovieClips) on its library, but, none of them are added into the stage ( the timeline contains only one empty frame),and then, the other swf (Main.swf), where I need to import some of the symbols from the other SWF.I have been looking around, and searching, but all the info that I saw, and tried, imports the symbols from the stage/timeline using things like:[code]If not,do I have modify my Resources.swf to work this out or do I have other alternatives?
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Nov 26, 2010
I have one swf (swf A) which loads swf B inside itself.
is it possible from swf B (when it loads) to get to the library symbol inside swf A?
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Oct 20, 2005
How I can create a MovieClip Symbol and put it into the Library using ActionScript?
I want to do this so I can dynamically create content for a ScrollPane.
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Apr 1, 2009
I am trying to load a movieclip from the library onto my stage. But the name of the movieclip is read in from a user-entered text field. Typically, to load a movieclip from the library named, Bee, I would do the following:
var mc:MovieClip = new Bee; // this works.
But the name of my symbol is in a TextField. The following do not work:
// Attempt #1:
var mc:MovieClip = new userfield_txt.text; // No Good
// Attempt #2:
var str:String = userfield_txt.text;
[code]....
I realize the new operator requires a Class data-type, so how do I get the value stored in a String or TextField into a Class type?
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Dec 16, 2008
I'm new to Flash, am working on my first Flash Project. I've been trying to move a particular symbol from my library onto the stage and when I do, I'm getting a "Resolve Library Conflict" error that says "One or more library items already exist in the document." and it gives me the choice to replace the existing items or not. It only appears to be happening with 1 or 2 particular symbols, not all of them. I did use this same symbol (as a graphic bullet) earlier in the project with no problem, but now it won't let me use it again. However, I have other symbols in the library that I have used multiple times throughout the project and I don't get this error pop-up when moving them into new frames. I don't see any mention of this in my Flash book, why I'm getting this and how to resolve it?
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Jul 5, 2010
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?
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Feb 12, 2011
I would like to know if there is a way to find out where is a symbol used into a Flash document.If Symbol A is used by two other symbols (say B and C) is there a way to query the enviroment to know that A is used by B and C?
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