I'm having a fun time converting Brainiversity from ActionScript 2.0 to ActionScript 3.0. There are a lot of little things that are different between the two versions, so I have a bit of work to do to get things up and running again.But it will be worth it. AS3.0 has a lot of benefits over 2.0 and I love the fact that the language has stronger error checking - especially when it comes to catchin
Livro completo sobre Actionscript, muito usado até entao. apesar de tratar sobre a tecnologia 2.0, ainda é muito usado, e serve com boa base pra quem também pretende trabalhar ou simplesmente usar o recem 3.0 do ActionScript da Adobe.<br>Baixar Agora!!!
In this video we will start with a blank flash document and build using flash drawing tools and lots of actionscript a simple functioning calculator which performs Addition, Subtraction, Multiplication, and Division. Have fun with this one and learn lots of Actionscript 3.0! (more)
An Function within Flash CS3 allow you to create a set of instructions and only have to write them one single time. Eveytime you want to use the instructions you simply call the function that has been created. In this short tutorial, author Bill Dallas Lewis presents the concept of Functions within ActionScript 3 and [...]
The TweenLite engine is an amazing ActionScript tweening engine that allows you to quickly create animations using one line of code. This episode shows where to get TweenLite, and how to use it to create ActionScript animations.
Cannonball is an implementation of the DOM Level 3 and CSS3 core specifications for ActionScript 3.0. For more information visit its official website. The API Documentation is also available.
In Actionscript i cicli for è bene utilizzarli sempre con cura. Ad esempio è bene usare variabili uint quando è possibile:
PLAIN TEXT
Actionscript:
for( var i:uint = 0; i++; i <100) {
// ...
}
È anche possibile usare la - non sempre conosciuta - forma:
PLAIN TEXT
Actionscript:
var i:uint = 0;
// ...
for(; i++; i <100) {
// .
Appena uno sviluppatore Flash/Actionscript si appresta a scrivere una funzione simile ad un tooltip, si scontra immediatamente con il problema della propoagazione degli eventi tra MovieClip sovrapposti. Infatti se un MovieClip (B) si sovrappone ad un MovieClip (A) che risponde, ad esempio, ad un evento MouseEvent.Mouse_OVER, passando con il mouse sul MovieClip (B) più alto [...]
Company: Inmage Location: Hyderabad Skills required: Minimum 2 years in Flash and overall 4 – 7 years IT experience
Job Description
Having experience of 3-5 years in Flash & ActionScript 3.0.
Hands on experience in ActionScript-3.0 at least 2 years.
Strong understanding and implementation of OOPS in Flash projects. Must have the experience of implementing OOPS concepts in a Flash Project.
There is an opening for "Graphics Designer " with one of our US Based Client based in Bangalore Position description As Web Designer, you will be involved in all stages of the client experience including pre-sales, engagement planning, implementation, project management, client management, and post-deployment escalation support. You will engage with clients and team both as a leader and
Programador(a) Actionscript para trabalhar no Itaim Bibi, com grandes clientes.Experiência comprovada em:- Lógica de programação;- XML;- Actionscript 2.0;Possuir experiência em e-learning será um diferencial;Enviar email para leo.hessel@gmail.com com o assunto VAGA_AS
Alcune curiosità su Actionscript 3.0 non sempre note...
trace()
L'istruzione trace(), usata per il debug, ora supporta più parametri:
PLAIN TEXT
Actionscript:
trace( a, b, c );
eval()
L'istruzione eval() è stata eliminata in Actionscript 3.0. Tuttavia visto che è possibile accedere a proprietà e metodi di un oggetto anche con la sintassi usata per accedere agli elementi di
This post is especially for Gem, Pastilan and Popcorn...Steps to get either the Actionscript 3.0 or Flex book:Send an email to "agangji [at] adobe.com" and ask on how you can get a free Adobe book.He would reply and tell you to twit on Twitter about Adobe Flex. Twit something nice about Adobe Flex.Reply to him again and tell him that you have twit about Adobe Flex. Be sure to give your Twitter I
Here is another post full of new AS3 classes, you cn use in your own projects.
- Pixelator - Transition effect
A class that take two displayobjects and create a transition between the both
- GraphicsUtil - A Utility Class for Drawing Arrows
Actionscript class for drawing arrows.
ACTIONSCRIPT DRAWING CLASSES
com.jR.Drawing.Base
com.jR.Drawing.Ellipse
com.jR.Drawing.Polygon
com.jR.Drawing.Rectangle
Adobe Flash is an excellent technology that allows developers to add interactivity and smooth animations to web pages. Its popularity is so immense that you’ll find many websites dedicated to helping developers interested in Flash.
In this article, you’ll find 12 wonderful websites that’s worth a bookmark if you’re looking into sharpening [...]
Learning ActionScript 3.0: A Beginner’s Guide by Rich Shupe and Zevan Rosser
Publisher: O’Reilly/Adobe Developer Library; 1st edition (January 4, 2008)
Language: English
ISBN-10: 059652787X
ISBN-13: 978-0596527877
In this book, authors Rich Shupe and Zevan Rosser share the knowledge they’ve gained from their years as multimedia developers/designers and teachers. Learning ActionSc
Author(s): Gary RosenzweigPublisher: Sams PublishingDate : 2002Format : CHMOCR : YLanguage : EnglishISBN : 0672323850Macromedia Flash delivers sound, interactivity, graphics, and animations across multiple browsers and platforms. It enables developers to create interactive interfaces and distinctive Web applications. ActionScript is the behind-the-scenes programming language that o
Premsssa
Actionscript 3.0 può rappresentare un buon punto di partenza per impratichirsi, chi non è pratico di programmazione C e/o C++, di programmazione orioentata agli oggetti (OOP). Inoltre, questa serie di lezioni, saranno utili a chi proviene da altri ambienti o da precedenti versioni di Flash.
Impostare un progetto
In questa prima lezione vedremo come impostare un progetto [...]
Preciso urgente de um programadores Flash com conhecimentos em actionscript para criar uma página com conexão a banco de dados (MySQL).Maiores detalhes via MSN: paulobetto1@hotmail.comNão é necessário estar baseado em São Paulo, SP
This is a great example of ActionScript usage. The script simulates the falling of a user-controlled number of leaves. What’s really cool about it is the level of interaction with the user.
The user can influence the leaves movement by blowing into the microphone and creating wind which modifies the falling trajectory according to the blowing [...]
First attempt at adding lightning to my rain scene, I added the following code to the onEnterFrame function, next step is to try and find out how to delay the lightning randomly and also add blur and curves to the lines, but the frame work is now there.
var lightning_random:Number = Math.round(Math.random() * 10);
var lightning_alpha:Number = [...]
Just finished my second piece of actionscript code, basically to see how you add multiple instances of a movieclip, randoming the location and a few other things i wanted to know, found the code on another website, I would put a link but i cant remember where I found it and it was also broken [...]
I have been learning ActionScript 3 now for the last two weeks and just could not grasp the structure behind the language. So for people who are in similair situation I am going to try and explain how I think about it, I use Flash CS3 which is great for programming AS3.
What I wanted to [...]
Flash es una excelente herramienta para el diseño de presentaciones, aplicaciones interactivas y sitios web, sin embargo para este ultimo siempre ha sido hecho a un lado debido a que el posicionamiento en buscadores se reducía a resultados casi nulos.
Pero a partir de ahora este “mito” puede desaparecer ya que Google ha empezado a indexar [...]
In HTML text fields on flash movie, text may be hyperlinked using the HTML A tag with HREF attribute contains a URL that may be for a standard protocol like HTTP. For example <A HREF=””>test</A>. The asfunction protocol is an additional protocol specific to Flash which causes the link to invoke an ActionScript function. You [...]
Using XML is one of the best ways for structuring external content in a logical format that is easy to understand, process, and update. This tutorial will teach you the basics on how to load and process XML in Flash using ActionScript 3.0. You are assumed to have basic knowledge of ActionScript in order to [...]
A iNova Digital - localizada em SP, próxima ao metrô Conceição - busca profissional motivado, com conhecimento sólido em ActionScript e boas noções de PHP, Banco de Dados e JavaScript.Contrato como estágio (necessário estar cursando faculdade) com bolsa auxílio de R$ 1.000,00 e plano de crescimento.Interessados acessem:
In a Flash Website, if you just need two or three “alone” buttons for your site navigation you can simple design them and place it in the stage. Or, to be more elegant, you can make an array in as3 and place them in the stage too. However, if you are creating a dynamic Flash [...]
Powerful development and design tools require thorough and authoritative technical advice and documentation. When it comes to Macromedia Flash, no one is more authoritative than Macromedia Development and writing teams. Now their official documentation is available to you in printed book form. As you work, keep this guide by your side for ready access to valuable information on using Flash. We’v
Potrebbe sembrare un argomento scontato e ormai esaurito, eppure con Flash CS3 e la nuova gestione della classi documento (package) permesse con Actionscript 3.0, non è del tutto immediato creare un preloader funzionante. L'ultima release di Flash, infatti, gestisce il caricamento del filmato in modo diverso dalle precedenti versioni. In rete potrete trovare diverse proposte [...]
A great article at The Tech Labs, by Ben Pritchard from PixelFumes, that will step you through the classes used to achieve a card flipping effect using the new rotationY property that exists in Flash Player 10.
Read full article, see the demos and download support files.
Nel post Argomenti variabili e di default in Javascript, Actionscript e PHP avevo esposto l'uso delle tecniche di passaggio di parametri variabili e di default. Aggiungo, ora, che in Actionscript 3.0 è stata introdotta una nuova dichiarazione di parametro in grado di specificare un parametro array che accetta un qualunque numero di argomenti separati da [...]
Se você faz mágica enquanto programa, nos mande seu CV, veja mais detalhes abaixo:O que você precisa saber: Domínio completo de código HTML/ PHP/ CSS e Flash ASO que você vai fazer: Montar websites e sistemas completos de gerenciamento de conteúdo, websites multimídia e não,. Procurar novas soluções e tecnologias, como J2ME/ FlashLite para celulares e telas touch-screen. Você vai traba
Con AS3 sono state introdotte nuove “istruzioni” per definire proprietà e metodi (pubblici o privati). Alcune, come private – già presente in AS2 – ha cambiato comportamento (private si comportava in AS2 come ora si comporta protected, in AS3 private è davvero “privata”!) proprio a causa dell’introduzione di una sintassi più OO rispetto alle precedenti [...]
In this book, authors Rich Shupe and Zevan Rosser share the knowledge they've gained from their years as multimedia developers/designers and teachers. Learning ActionScript 3.0 gives you a solid foundation in the language of Flash and demonstrates how you can use it for practical, everyday projects. The authors do more than just give you a collection of sample scripts. Written for those of you new
Ho aperto un progetto su Google Code: undolibrary. Per adesso, questa libreria, contiene un solo componente (Knob - manopola) da utilizzare tramite Actionscript 3.0. Ne parlo in quanto questo componente è propedeutico ad una serie di tutorial/sorgenti in Flash che volevo rendere disponibili.
Google Code
Prima di tutto introduco il concetto di Google Code per chi ne [...]
uMaps is an universal ActionScript 3.0 mapping API.
This flexible API enables developers to build fully-customized solutions. The current version is integrated with OpenStreetMap and Microsoft Virtual Earth map data.
uMaps features:
Support for custom map tiles and providers
Flash / Flex versions
KML Support
FLA-Based Map Controls
Marker Manager
Advanced content layering
Using a universal API i
Creare eventi personalizzati in Actionscript 3.0 è semplicissimo. Usarli, poi, permette di utilizzare il metodo addEventListener() e rendere il nostro oggetto del tutto standard. Se abbiamo creato una classe, ad esempio Bottone, è corretto associare a questa uno o più eventi tramite una apposita classe (derivata dalla classe Event) BottoneEvent. Potremmo realizzare tutti gli eventi [...]
In this tutorial you will learn how to build an application which will display a Digg post which will be determined randomly. This will be built using Flash 9 and ActionScript 3. If you are still working in AS2, I recommend this tutorial.
Another cool tutorial (beginner level), by Craig Campbell showing in few steps how to handle / set the dephs in Flash with as3.
Read tutorial and download support files
For those whom are looking for lightweight action script 3 based preloader and preloader wrapper (a small preloader swf that loads the bigger ones). I’ve written a sample of those two in my new developer based blog in
You may download the script from there to use for your projects, portfolios and even commercial use but do leave some comments as where you using it
Do you want to develop applications more quickly, write cleaner code, and use external sources as the data that drives your applications? Kris Hadlock explains how to create an ActionScript component for Flex by using XML as a data source to offer reusability in your Flex applications.
Read Tutorial and download support files
[...]
Another great tutorial from Flash & Math presenting a “trick” that can be used to create a wide range of tween effects. This idea is used in other tutorial “Advanced and Experimental” section tutorial, Rotating 3D Objects with the Tween Class in ActionScript 3, but they highlight it here for the benefit of a wider [...]
Chi sviluppa sa bene che una delle caratteristiche delle funzioni (function () ) è quella di avere o meno degli argomenti di input. Può capitare, a volte, di dover scrivere una funzione che, in base ai parametri di input, si comporta in modo differente (in programmazione OO troviamo questo comportamento indicato come poliformismo). I parametri [...]
A video tutorial showing how to create two movieclips that follow the X and Y coordinates of the mouse to give a target like effect, this is ideal for shooting type games.
FIVe3D (Flash Intercative Vector-based) è un'interessante progetto reazlizzato da Mathieu Badimon. Ne avevo preso visione già qualche tempo fa, quando Actionscript 3.0 ancora non era disponibile. È di questi giorni, invece, un aggiornamento del package alla versione 2.1.
Questa libreria ha la caratteristica di essere essenziale! Non si propone come competitor di progetto Papervision3D. Il suo [...]
By James O’Reilly
jamesor.com
With user experience expectations on the rise, developers increasingly are looking for ways to bring the rich experience of a desktop application to the web. This article is about developing dynamic graphical user interfaces (GUIs) that mold themselves intelligently to the size of the screen to meet users’ expectations.
A liquid is a collection [...]
Immaginiamo di avere un file XML che ad un certo punto contiene la seguente riga:
PLAIN TEXT
XML:
...
<media :thumbnail url="thumbs/pic10.jpg" type="image/jpeg"/>
Come leggo, ad esempio, l'attributo url in Actionscript 3.0?
Se l'XML fosse stato questo:
PLAIN TEXT
XML:
...
<immagine url="thumbs/pic10.jpg" type="image/jpeg"/>
Ottenuto il puntatore a <immagine/> (imgptr) sarebbe stato sufficiente:
PLAIN TEXT
Actionscript:
trace ( imgptr.@url );
Nel caso <media:thumbnail/>, invece, bisogna aggiungere:
PLAIN TEXT
Actionscript:
var [...]
Con Flash CS3 e Actionscript 3.0 sono state riviste molte cose tra cui la presenza dell'evento onReleaseOutside. Quest'ultimo, come altre tante cosine, è stato eliminato senza una vera e propria ragione e senza una vera e propria alternativa. Nella documentazione ufficiale di Actiobscript 3.0, nella sezione Migrazione da ActionScript 2.0, cercando per onReleaseOutside viene indicato:
Sostituito [...]
Another great tutorial from Flash and Math, on 3D.
This tutorial, will show you how to use the AS3 Tween class and its access to the built-in AS3 collection of ‘easing’ functions to produce interesting rotation effects for 3D objects. To illustrate the idea, we use the following example in which a hexagonal cylinder, drawn at [...]
Been refurbishing my Flash actionscript skill again. After staying dormant some time I must say my skill gets little rusty but, nevertheless actionscript 3 is godsend. At first I hated the fact, I can't even control buttons and movieclips like I did in Actionscript 2 days but, once I've get used to it the resources from Actionscript classes become more and more useful to me. The best of all my
In AS3, loading external images dynamically is done slightly differently than in ActionScript 2. Whereas in AS2, we could just use the loadMovie() method of the MovieClip class, this is no longer the case. Instead we have to use the Loader class, as well as the URLRequest class. This actually gives us more flexibility when [...]
This tutorial will cover the basics of using the Date() class and the Timer() class in ActionScript 3. The Timer class, as you may know, is new to AS3. The ActionScript 2 equivalent of a Timer object would be the setInterval method, which is no longer available to us in AS3. So, with no further [...]
Thibault Imbert decided to released is book on open source license. This book is write in French, although Thibault ask for the cooperation of everyone to translate it to other languages (primarily English). I really don’t understand why O’Reilly France didn’t publish the book, but the intention of Thibault is great and should be followed [...]
This day and age, its not hard to find someone who claims to know Adobe Flash. While Flash-only sites are being more often criticized for their tendency towards animation and “flash” over accessibility and usability, the Flash medium is still very relevant if used properly. Here are 5 signs you shouldn’t hire a [...]
Communication between two seperate flash files placed on the same page (or even running simultaneously on one machine) is a nice way to spread a project out. You can send variable, call functions, pretty much do anything in one swf from another. Easiest case use would be a navigation menu set up in one flash [...]
Tags: ActionScript 3.0, Flash CS3, GET, Internet, LoaderInfo, parameters, SviluppoCon Flash CS3 è cambiato anche il modo di leggere i parametri passati ad un filmato, sia come params che come parametri GET. Nelle precedenti versioni di Flash un parametro lo si trovava disponibile come variabile direttamente nel primo frame. Adesso, fortunatamente, abbiamo un oggetto che [...]
Flash actionscript world has radically changed since the last time i’am in touch with it :), today i am searching solutions around for creating PDF file from Actionscript application, and i found AlivePDF by Thibault Imbert
AlivePDF is an open-source ActionScript 3 (Flash, Flex, AIR) PDF generation library. It allows you to generate PDF’s client-side. Released [...]
Flash actionscript world has radically changed since the last time i’am in touch with it :), today i am searching solutions around for creating PDF file from Actionscript application, and i found AlivePDF by Thibault Imbert
AlivePDF is an open-source ActionScript 3 (Flash, Flex, AIR) PDF generation library. It allows you to generate PDF’s client-side. Released [...]
Craig introduces you to using sound in ActionScript 3. In this tutorial, we’re going to discuss accessing external sound files using ActionScript without ever actually importing them into the Flash authoring environment.
Read the tutorial
This ActionScript reference for rich Internet application development provides an alphabetical reference for all native ActionScript APIs for the Adobe technology platform runtimes: Adobe Flash Player and Adobe AIR—as well as the Adobe Flex framework APIs. Use this guide both as an API [...]
Flash CS3 allows you to create either an ActionScript 2 or ActionScript 3 document. There are a number of ways ActionScript 3 is different from version 2. One of the first changes designers is no longer being able to attach a script to a button instance. In this tutorial you’ll learn how to control buttons [...]
Cast3D is 3D animation framework library for Adobe Flash in ActionScript3. The foundation is a multi key-framed geometrical animation. Cast3D supports geometry and texture morphing, skin animation, 3D sound, animated movie and video. A number of animation interpolation splines is implemented to provide smooth and natural motion, like Bezier, TCB, Hemite(cubic), Cosine and Linear.
Cast3D does [...]
In this book, authors Rich Shupe and Zevan Rosser share the knowledge they've gained from their years as multimedia developers/designers and teachers. Learning ActionScript 3.0 gives you a solid foundation in the language of Flash and demonstrates how you can use it for practical, everyday projects. The authors do more than just give you a collection of sample scripts. Written for those of you new to ActionScript 3.0, the book describes how ActionScript and Flash work, giving you a clear look into essential topics such as logic, event handling, displaying content, migrating legacy projects to ActionScript 3.0, classes, and much more. You will learn important techniques through hands-on exercises, and then build on those skills as chapters progress. ActionScript 3.0 represents a significant
Tags: ActionScript 3.0, Flash CS3, getChildAt(), getChildByName(), numChildren, SviluppoUna fantastica innovazione introdotta con Actionscript 3.0 è quella di poter enumerare tutti gli oggetti (anche shape disegnate al momento) presenti in un contenitore (DisplayObjectContainer). In effetti era ora che Adobe introducesse questa feature. Mi ero sempre lamentato di questa mancanza, soprattutto perchè andando in debug l'ambiente [...]
Image Smoothing
For some reason when Adobe released Flash 8 they gave the user the option as to whether to smooth an imported image or not. In the past this has been done by default and I can't really see why anyone would want the image not to be smoothed when scaling up but maybe that's just me. You now need to right click the image in the library and allow smoothing. This is all well and good
Big RIAs need good interaction with the user. In big applications (like Buzzword, etc) with intensive text processing is a must to have implemented a spell checker.
A very good spell checker that is built in Actionscript 3 is Spelling Plus Library (SPL) by gSkinner - the license is here and can be bought from here.
It [...]
Esse é o primeiro de uma serie de artigos que estou escrevendo para o site FMS Guru Brasil. Segue o link: -e-flash-media-server-actionscript-server-side
Questo AS 3.0 è veramente un gran passo avanti per tutti i Flash developer, non solo per l’aumento delle performance grazie alla nuova struttura ma soprattutto per la flessibilità e la somiglianza con linguaggi più evoluti come Java e C#.
Per farvene ancor meglio un’idea vi consiglio la visione di un simpatico filmato di GSkinner, 50 [...]
So you need a modal window and you are using Flex :). This a small example that will open a modal window when application it's initialized. I put the title to the modal window, but you can add also an icon.
<mx:application xmlns:mx="http://www.adobe.com/2006/mxml">
layout="absolute" initialize="_openModalWindow()">;
<mx:script>
<!--[CDATA[
import mx.containers.Canvas;
import mx.managers.PopUpManager;
import mx.containers.TitleWindow;
import mx.controls.Label;
public function _openModalWindow():void
{
//define title window
var _titleWindow:TitleWindow = new TitleWindow();
_titleWindow.title = "New modal window";
//define and add canvas
var _tmpCanvas:Canvas = new Canvas();
_tmpCanvas.height = 100;
_tmpCanvas.width = 300;
_titleWindow.addChild(_tmpCanvas);
//define and add label
var _tmpLabel:Label = new Label();
_tmpLabe
Adobe Flash CS3 Professional ActionScript 3 Essentials Course, available on Total Training web site as online study or on DVD, it's created for developers that have beginner or intermediate programming skills.
Highlights
Review the Panel basics in ActionScript 3 and see how to set up the ActionScript preferences using the Reference Library and the Script Selection panel.
Learn how to use dot syntax notation and how to write ActionScript 3 structures, and find out how to debug them when things go wrong.
Discover how to use properties and methods for ActionScript 3 built in classes for complete control of MovieClips, TextFields and Sounds.
Build event handlers for ActionScript 3 built-in classes to add interactivity and respond to both user generated events as well as program events like sounds and data loading.
Make and use your own custom classes so you can modify existing classes like custom buttons, and get more reusability from your applications and animated MovieClips.
Cours
For those that have been to Flex Camp in Bucharest, Romania they already have one copy of this book - that because Adobe was kind to give all participants an Essential Actionscript 3.0 book for free. This book is a must for Flash and Flex programmers and covers many aspects of programming Actionscript. Is published by O’Reilly and has a bit more over 900 pages.
The book can be easily found in US and other West European countries but in Romania it can be bought from Byblos Bookstore (to see it online click here).
ActionScript 2.0 Language Reference for Macromedia Flash 8ISBN: 0-321-38404-0 | 1376 pages | October 13, 2005 | CHM | 1.76 MbThe ActionScript 2.0 Language Reference for Macromedia Flash 8 is a comprehensive reference manual that describes the application programming interface (API) for Macromedia Flash Player, the most pervasive client runtime environment in the world.It includes valuable syntax and usage information; detailed descriptions of classes, functions, properties, and events; and copy-and-paste code samples for every element in the ActionScript language.The ActionScript 2.0 Language Reference for Macromedia Flash 8 will help you:• Learn how to use specific APIs efficiently and effectively• Understand the range and variety of functionality ActionScript offers• Repurpose Macromedia-tested code in your own applications Powerful development and design tools require thorough and authoritative technical advice and documentation.When it comes to Macromedia Flash, no one is mor
Gary Rosenzweig’s ActionScript 3.0 Game Programming University shows you how to use ActionScript, the programming language behind Flash CS3 Professional. The lessons teach you all the basics of ActionScript programming through game examples, but the code can be easily adapted to non-game-oriented projects, such as web training and advertising. Written by a real-world Flash developer, this book presents you with the source code of 16 complete games and lays the foundation for you to create your own games. Gary also provides a companion website - flashgameu.com, which contains files, updates, new content, Gary’s blog and much more.
(more…)
L’oggetto PROTOTYPE risiede nel metodo costruttore di ogni classe e viene creato automaticamente sia in Actionscript che in Javascript ogni volta che viene creata una nuova instanza della classe.
Definendo valori e funzioni originariamente non previsti nel prototype di una classe, questi diventano immediatamente disponibili per tutte le sue instanze. L’oggetto ci torna utile nel caso [...]
Tags: ActionScript, contesto, Flash, Sviluppo, this, parentQuando "scatta" un evento di un oggetto il contesto, ovvero l'oggetto madre che rappresenta l'area di validità di tutte le variabili, diventa l'oggetto stesso. Questa caratteristica, propria della programmazioni Object Oriented, può disorientare provocando errori e malfunzionamenti nel codice. Inoltre, in determinate situazioni, può impedire di accedere ad alcune variabili "prima" disponibili.
Prima di tutto vediamo una caratteristica di ActionScript legata alla gestione dei contesti che, se compresa, ci farà risparmiare alcune ore di inutili prove. Quando abbiamo a che fare con oggetti grafici o più semplicemente di MovieClip innestati uno all'interno dell'altro, la proprietà _parent risolve qualsiasi problema di contesto. Ad esempio se il MovieClip padre_mc contiente un altro MovieClip figlio_mc e si usa il seguente codice:
PLAIN TEXT
Actionscript:
// codice all'interno di padre_mc
figlio_mc.onRelease
New video available about ActionScript / JavaScript Script Bridging in Adobe AIR by Kevin Hoyt.
You...
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