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Learn to combine sounds, motion animation, image animation, and other interesting effects in a Flash movie using ActionScript 3.
Click LighteningStorm01 to run the ActionScript program from this lesson. This program produces sound in addition to graphics. (Click the "Back" button in your browser to return to this page.)

Table of contents



This tutorial lesson is part of a series of lessons dedicated to object-oriented programming (OOP) with ActionScript.

The project that I will present and explain in this lesson is the culmination of several previous lessons dealing with animation, sound, transparency, mouseevents, chroma key, etc.

All references to ActionScript in this lesson are references to version 3.0 or later.

Several ways to create and launch ActionScript programs

There are several ways to create and launch programs written in the ActionScript programming language. Many of the lessons in this series willuse Adobe Flex as the launch pad for the sample ActionScript programs.

An earlier lesson titled The Default Application Container provided information on how to get started programming with Adobe's Flex Builder 3. The lesson titled Using Flex 3 in a Flex 4 World was added later to accommodate the release of Flash Builder 4. (See Baldwin's Flex programming website .) You should study those lessons before embarking on the lessons in this series.

Some understanding of Flex MXML will be required

I also recommend that you study all of the lessons on Baldwin's Flex programming website in parallel with your study of these ActionScript lessons. Eventually you will probably need to understand both ActionScript and Flex andthe relationships that exist between them in order to become a successful ActionScript programmer.

Will emphasize ActionScript code

It is often possible to use either ActionScript code or Flex MXML code to achieve the same result. Insofar as this series of lessons is concerned,the emphasis will be on ActionScript code even in those cases where Flex MXML code may be a suitable alternative.

Viewing tip

I recommend that you open another copy of this document in a separate browser window and use the following links to easily find and view the figuresand listings while you are reading about them.


  • Figure 1 . LighteningStorm01 at startup.
  • Figure 2 . Visual output produced by clicking the button.
  • Figure 3 . Project file structure for LighteningStorm01.
  • Figure 4 . The image named normalsky.jpg.
  • Figure 5 . The image named flippedsky.jpg.
  • Figure 6 . The tree image.


  • Listing 1 . Beginning of the Driver class.
  • Listing 2 . Beginning of the constructor for the Driver class.
  • Listing 3 . The remainder of the constructor.
  • Listing 4 . The CREATION_COMPLETE event handler.
  • Listing 5 . Beginning of the TIMER event handler.
  • Listing 6 . Controlling the motion of the moon.
  • Listing 7 . The method named processBackgroundColor.
  • Listing 8 . Beginning of the method named makeTheCloudsMove.
  • Listing 9 . Compute new alpha value for the normal sky image.
  • Listing 10 . Compute new alpha value for the flipped sky image.
  • Listing 11 . Apply the new alpha values to both sky images.
  • Listing 12 . The CLICK event handler for the button.
  • Listing 13 . The method named flashLightening.
  • Listing 14 . The method named drawLightening.
  • Listing 15 . The method named soundCompleteHandler.
  • Listing 16 . Code for Main.mxml.
  • Listing 17 . Source code for the class named Driver.

Questions & Answers

what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
How can I make nanorobot?
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
how can I make nanorobot?
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
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Source:  OpenStax, Object-oriented programming (oop) with actionscript. OpenStax CNX. Jun 04, 2010 Download for free at http://cnx.org/content/col11202/1.19
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