Intro to Flash Game Design

1
Intro to Flash Game Design

• Bill Gray
• Spring 2006

2
Basic Components

• Splash Screen
• Cut Scenes
• Introduction
• Directions
• Game Play

3
Hands On

• Movement/Navigation
• Adding Sound
• Collision detection
• Keeping Score

4
Movement

• Name RII
• Create an ActionScript Layer
• Select the first frame in the ActionScript Layer
• Open Actions Frame
• Begin Coding

5
Movement Code Sample
if (Key.isDown(Key.UP)) xSpeed
thrustMath.sin(turtle._rotation(Math.PI/180))
ySpeed thrustMath.cos(turtle._rotation(Math.P
I/180)) turtle.gotoAndStop("forward") forward(
)
6
Navigation

• Name your buttons
• Name the key frames for Introduction,
  Directions, etc.
• Select the first frame in the ActionScript Layer
• Open Actions Frame
• Begin Coding

7
Navigation Code Sample
playB.onPress function() gotoAndStop("Game")
console._visible 1 activate true
8
Adding Sound

• Import sounds to your Library
• Set the Linkage properties to Export for
  ActionScript
• Give the sound a name (Identifier)
• Select frame 1 on the ActionScript Layer
• Open Actions Frame
• Begin Coding

9
Sound Code Sample
forward function() thruster new
Sound() thruster.attachSound("thrust") thruste
r.start()
10
Collision Detection

• Use the hitTest function to detect when theres
  a collision between the Seeker and RII.
• Program action to take when a collision has been
  detected.

11
Collision Code Sample
if(seeker.hitTest(turtle)) seeker._rotation
180 exSpeed -15 eySpeed
-15 seeker._y - eySpeed seeker._x
exSpeed // Play Collision
Sound bounce()
12
Keeping Score

• Set a value for the score variable
• Assign the score variable to the Dynamic text
  field located on the Console Clip
• In the RII demo each time the Seeker and RII
  collide 100 points is added to the score

13
Score Code Sample
if(seeker.hitTest(turtle)) hitcnt-- score
score 100 if (hitcnt
4) seeker.gotoAndStop("green") else if
... else if else if else if
else hitcnt 5 seeker.gotoAndStop("blue")

14
References
Books Macromedia Flash MX 2004 ActionScript
Training from the SourceMacromedia Flash MX 2004
Game Design DemystifiedGame Development with
ActionScriptActionScript Cookbook Macromedia
Flash MX 2004 Games Most Wanted - I haven't used
this book myself, it was recommended to me by a
friend. Websiteshttp//www.flashkit.com/tutori
als/Games/ http//www.hotscripts.com/Flash/index.h
tml