Programming games

1
Programming games

• Chasing Bo. Recap Video
• Homework Finish base projects. Post proposal on
  Flash project. Work on project(s)!

2
Chasing Bo

• Added two events
• bo.addEventListener(MouseEvent.MOUSE_OVER,
  changedirection)
  
• bo.addEventListener(MouseEvent.CLICK,stopbo)

3
Video examples

• Simple play video 'in' Flash
• Play choice of videos
• For larger archive of video clips, use database
  to determine which one to play
  
• Webcam example

4
Cautions on video

• FLVPlayback is a type of object built-in to
  Flash.
  
• BUT you need to import the definitions
• import fl.video.
• or give a long name.
• You need to get the FLVPlayback Symbol in the
  Library, even though the code creates an instance
  and places it on the Stage
  
• Your code needs to add the newly created object
  to the display list.
  
• See tutorials.

5
Get FLVPlayback in the .fla file

• Window/Components/FLVPlayback
• Move to Stage and erase or move straight to
  Library
  

6
Frame code

• import fl.video.
• var flvFLVPlayback //declare flv
• flv new FLVPlayback() //initialize it
• flv.source "dickey2.flv" // my video
• flv.x 10 //position horizontally
• flv.y 10 // . vertically
• addChild(flv) // display it!!!

7
Play choice of videos

• First example plays that one video immediately.
• Critical assignment was flv.source
  "dickey2.flv"
  
• For choice of videos need to determine name of
  video from the button pushed
  

8
Using event data

• Recall the functions that are cited in
  addEventListener all have a parameter.
  
• My previous examples did not use the parameter in
  the function!
  
• For the video playing example, make both buttons
  point to same function
  
• playbtn0.addEventListener(MouseEvent.CLICK,playit)
  
  
• playbtn1.addEventListener(MouseEvent.CLICK,playit)
  
  
• How to determine which button was pressed?

9
Using event data

• Make the event handler function use the event
  parameter passed to it
  
• ev.target.name is the name of the button.
• I know that the 7th character of the name is
  either 0 or 1.
  
• I set up an array of the clips

10
Coding

• var clipsArray
• "dickeybrook.flv",
• "sumo.flv"
• function playit(evEvent)
• var clipnameclipsparseInt(ev.target.name.subst
  r(7,1))
  
• flv.source clipname

11
Function arguments

• function playthisvideo(vnString)
• .
• flv.src vn
• .
• playthisvideo("dickeybrook.flv")
• Or choice "sumo.flv"
• playthisvideo(choice)

This puts sets the src to be whatever the
parameter vn holds
12
Other examples

• Use php on server to access MySql database for
  information on clips
  
• Use calculation on webcam input to determine
  which recorded video to playback
  
• Read tutorials
• Come see me.

13
Jigsaw variations

• Read the whole tutorial.
• Pay attention to the location of the .as files.
• Be careful and systematic about recording the x
  and y information

14
Classwork/Homework

• (Finish base projects rps, bouncing ball,
  cannonball, video)
  
• Decide on Flash project
• Make posting
• Work on project.
• have something to test often