Programming games
Cannonball due. Drawing & printing
example.
Acquiring video or sound
Homework: Catch up: complete
projects (rps, Bo, cb). Start video or
audio. Plan your project.
Cannonball extension
• You may consider adding sound to
cannonball for your sound/video project.
• Can use
– coding or
– sound in frame
Flash terms
• Create .fla and .as files using Flash
development environment. This is
development time.
• Runtime (aka execution time)
– Test program using the development
environment. This does create a .swf file.
– Publish creates .html file and .swf file
Development time
• Bring instances of movie clip symbols in
Library to the Stage.
– Give instance names
– ActionScript refers to instances by name
• Can File/Print
– May not do what you want…
– I copy and paste code into Word or
Dreamweaver
Drawing & printing
• Adding content, namely a movie clip
symbol to Stage at runtime
– Various calculations
– Use Properties of symbol (right mouse click)
to set up: Export for ActionScript
• Print during runtime
– Can set up to print several pages. My
example just prints one page.
Demonstrate
• Drawing example
• Note: this is a ‘stub’ for a bigger
application.
Features
• Create wall symbol. Change settings to
Export for ActionScript.
• Set up handling for mouse click on board.
– One handler for 1st click and another for 2nd
click
– Use ev.localX and ev.localY to get
coordinates.
– Use Math.atan2(…) and Point.distance(…)
• Use PrintJob
Making your own video for Flash
playback
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Shoot video
Upload to computer
[Edit]
Produce .flv
Create Flash movie and test
Publish Flash movie
– Upload .html, .swf, and all the .flv files to the
server
Initial steps
• Shoot (?) video
• Upload to computer
Producing .flv
• Just like images, there are different
encodings for videos.
– wmv, mov, avi, dv, ….
• Adobe Flash CS4 Media Encoder will
accept many different types and produce
an .flv file (an .flv version of the same
video clip)
– Can set quality settings
• Tradeoff: size (space on server, loading time)
versus quality
Start queue
• Creating the .flv file takes a while….
• You can do more than one encoding at a time.
– The name of each file is the same name, with filetype
.flv
• Use the pre-set settings OR get into more detail
– Higher quality means larger files
Acquire video
• Find website with video (or audio)
• go to http://file2hd.com/
– Enter URL of site
– Check off agree to terms, filter (movies or
audio)
– click on get files
– be patient
– choose from list.
Sound
Two (at least) methods for incorporating
sound into Flash
• All coding: create Sound objects, set
source of sound, play. Can manipulate
volume, pan, etc. using Soundchannel.
Also, register and handle events, including
when sound has been loaded.
• Frame: associate [start of] sound with
frame.
Acquire sound
• Many types of sound. For coding method,
need mp3
• Find on-line sound editors.
• Need to know location (URL) of sound
file(s).
Coding method
import flash.media.Sound;
import flash.net.URLRequest;
This file is located
in the same folder
on my computer. It
doesn't have to be.
var urlname:String = "missle.mp3";
var requestsf:URLRequest = new
URLRequest(urlname);
var msound:Sound = new Sound(requestsf);
// at appropriate place in the code
msound.play();
Frame method
• File/Import/Import to Library
– Select sound file(s).
• Click on appropriate frame in timeline
• In property panel, select Sound [file].
– You can select a set effect and/or edit the
sound.
Cautions
• In either method, need to be aware that
sound lasts certain amount of time.
• Be careful about starting sound again and
again (unless that is what you want)
Examine source
• Sound added to frame
– Bo the barking dog
– consider for collapsing/exploding target
• Code
– Play sound as event handler for button click
– Play random choice of tune from [short] list.
• Note: pause, pan, volume features. These require
other objects.
Homework
• Decide on video or audio
– Create or acquire video clip(s)
– Create or acquire audio clips. Can use Common
Library / sounds.
– Keep in mind: this is a short assignment.
– You can incorporate sound or video into your final
project.
• Think about what you want to do for your project
– Check with me AND make proposal to blog.