AS3-Signals Introduction
What is AS3-Signals?
AS3-Signals (or ‘signals’ for short) is a proven alternative to the native AS3 event system.
Watch Slideshow
[slideshare id=11402070&doc=rmcintroas3-signalsv1-120203061744-phpapp02]
Comparison
Syntax
You can see that only line 4 is different.
Flash Events
[actionscript3]
//CREATE
_person = new Person("Sam");
//LISTEN
_person.addEventListener(PersonEvent.GREETED, _onPersonGreeted);
//CALL
_person.greet("Hello!");
[/actionscript3]
AS3-Signals
[actionscript3]
//CREATE
_robot = new Robot("Robot");
//LISTEN
_robot.signal.add(_onRobotSignalGreeted);
//CALL
_robot.greet("It is me, the Robot!");
[/actionscript3]
What about the speed of AS3-Signals vs Events?
See this image from Ross Gerbasi showing a comparison in milliseconds (lower # is better/faster).
AS3-Signals and Robotlegs
I am a big fan of the Robotlegs framework for AS3. I’ve written about it many times. AS3-Signals is a completely separate project, but WOW these two play really nice together. In my series of custom project templates I created a specific Robotlegs w/ AS3-Signals Template. On a recent client project I chose Robotlegs and added in the optional AS3-Signals project.
Next Steps
- Checkout the proof that AS3-Signals are FASTER than events!
- Read this good article and code on AS3-Signals for Robotlegs.
- See this nice overview of AS3-Signals
- Checkout the HD Tutorial Video and full source code for this post (See ‘Member Resources’ below).
Member Resources
[private_Free member]Enjoy this members-only content!
HD Video Screencast
[tubepress video=”36959934″ embeddedHeight = “350” embeddedWidth = “550” showInfo = “false”]
- Download the AS3-Signals Presentation RMC_Intro_AS3-Signals_v1.pdf for more background information.
- Download the GIT source AS3SignalsDemo.
- See my template combining RobotLegs + AS3-signals
- See my template combining FlexMobile + RobotLegs + AS3-signals
[/private_Free member]
Thanks for sharing syntax.
[…] Improved ‘Event Listener’ syntax and performance. I like the features offered by the AS3-Signals project. […]
I truly wanted to post a brief note to be able to appreciate you for the stunning guidelines you are giving at this site. My time intensive internet search has at the end of the day been recognized with reputable content to exchange with my family and friends. I would assert that many of us site visitors actually are unequivocally endowed to exist in a notable site with very many outstanding individuals with very helpful principles. I feel really privileged to have encountered the web page and look forward to really more entertaining moments reading here. Thanks once again for everything.
Very interesting subject, thank you for putting up.