The Game Maker's Apprentice: Game Development for Beginners (Book & CD)

335 Pages·2006·12.13 MB·English

by  Jacob Habgood

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The Game Maker’s Apprentice Game Development for Beginners TECHNOLOGY IN ACTION™
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The
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Game Maker’s
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f you want to learn the craft of making computer games, then you’ve come to the right
place. This book, and companion CD, provide all you need to create your own games
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for Microsoft Windows using Game Maker. It introduces beginners of all ages to the art of

creating computer games. All the graphics, sound effects, and music you’ll need are
M
included to put together no less than nine professional-looking games! Apprentice
Game Maker allows you to begin creating games almost immediately, using a simple
a
drag-and-drop system that makes learning to program much easier than traditional pro-
gramming languages. This book brings together the expertise of Game Maker’s creator with k
a professional game developer to present a complete guide to designing and programming
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games that are fun to play.
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The authors’ passion and enthusiasm for game development really shine
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through in The Game Maker’s Apprentice, and you’ll soon discover that the s Game Development
process of creating games can be just as fun as actually playing them!

A
for Beginners
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p
MINIMUM HARDWARE REQUIREMENTS
PC Running Windows 98SE or Above r
CD or DVD-ROM Drive e
Create PC games the easy way using
32MB DirectX-Compatible Graphics Card
DirectX-Compatible Sound Card n Game Maker’s simple drag-and-drop interface
DirectX 8 or Above
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Learn essential game design theory
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Make your games more fun!
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IINNCCLLUUDDEESS CCDD Jacob Habgood EERR SSEEEEDD
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ISBN 1-59059-5631959-93 USUhsSeer lv $lee3 vi9ne. lG:9Ba9emgein Pnreorgramming OHvaebrgmoaords and Mark Overmars WWIITTHH EGEGRARAYYMMTTEEH EH EIIAAMNMNTTAGAGE E YY99 OOGGUU AAMMEESS!!
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6153FM.qxd 3/25/06 3:50 PM Page i
The Game Maker’s
Apprentice
Game Development for Beginners
Jacob Habgood
Mark Overmars
6153FM.qxd 3/27/06 3:29 PM Page ii
The Game Maker’s Apprentice: Game Development for Beginners
Copyright © 2006 by Jacob Habgood and Mark Overmars
All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means,
electronic or mechanical, including photocopying, recording, or by any information storage or retrieval
system, without the prior written permission of the copyright owner and the publisher.
In purchasing this book, the authors and publisher grant you permission to use the electronic resources
from the accompanying CD for commercial or noncommercial use in your own games made with Game
Maker. However, redistribution of the original games or their resources is prohibited and the authors
retain full copyright of all the original game concepts and the intellectual property associated with them.
ISBN-13 (pbk): 978-1-59059-615-9
ISBN-10 (pbk): 1-59059-615-3
Printed and bound in China 9 8 7 6 5 4 3 2 1
Trademarked names may appear in this book. Rather than use a trademark symbol with every occurrence
of a trademarked name, we use the names only in an editorial fashion and to the benefit of the trademark
owner, with no intention of infringement of the trademark.
Lead Editor: Chris Mills
Development Editor: Adam Thomas
Technical Reviewer/Additional Material: Sean Davies
Editorial Board: Steve Anglin, Ewan Buckingham, Gary Cornell, Jason Gilmore, Jonathan Gennick,
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Indexer: Present Day Indexing
Artist: Kinetic Publishing Services, LLC
Illustrations and Cover Art: Kevin Crossley
Game Artists: Kevin Crossley, Matty Splatt and Ari Feldman
Cover Designer: Kurt Krames
Manufacturing Director: Tom Debolski
Distributed to the book trade worldwide by Springer-Verlag New York, Inc., 233 Spring Street, 6th Floor,
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6153FM.qxd 3/25/06 3:50 PM Page iii
To halcyon days
with a frog,
a parrot,
and a talented bunch of gremlins.
6153FM.qxd 3/25/06 3:50 PM Page iv
Contents at a Glance
Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
About the Authors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
About the Technical Reviewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii
About the Illustrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx
PART 1 ■ ■ ■ Getting Started
■CHAPTER 1 Welcome to Game Maker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
■CHAPTER 2 Your First Game:Devilishly Easy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PART 2 ■ ■ ■ Action Games
■CHAPTER 3 More Actions:A Galaxy of Possibilities . . . . . . . . . . . . . . . . . . . . . . . . . 41
■CHAPTER 4 Target the Player:It’s Fun Being Squished . . . . . . . . . . . . . . . . . . . . . 65
■CHAPTER 5 Game Design:Interactive Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . 85
PART 3 ■ ■ ■ Level Design
■CHAPTER 6 Inheriting Events:Mother of Pearl . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
■CHAPTER 7 Maze Games:More Cute Things in Peril . . . . . . . . . . . . . . . . . . . . . . . 127
■CHAPTER 8 Game Design:Levels and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
iv
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PART 4 ■ ■ ■ Multiplayer Games
■CHAPTER 9 Cooperative Games:Flying Planes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
■CHAPTER 10 Competitive Games:Playing Fair with Tanks . . . . . . . . . . . . . . . . . . 191
■CHAPTER 11 Game Design:Balance in Multiplayer Games . . . . . . . . . . . . . . . . . . 211
PART 5 ■ ■ ■ Enemies and Intelligence
■CHAPTER 12 GML:Become a Programmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
■CHAPTER 13 Clever Computers:Playing Tic-Tac-Toe . . . . . . . . . . . . . . . . . . . . . . . . 245
■CHAPTER 14 Intelligent Behavior:Animating the Dead . . . . . . . . . . . . . . . . . . . . . . 259
■CHAPTER 15 Final Words . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
■BIBLIOGRAPHY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
■INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299
v
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Contents
Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
About the Authors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
About the Technical Reviewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii
About the Illustrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx
PART 1 ■ ■ ■ Getting Started
■CHAPTER 1 Welcome to Game Maker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installing the Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
The Global User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Running a Game . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
How to Get More Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
What’s Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
■CHAPTER 2 Your First Game: Devilishly Easy . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Designing the Game:Evil Clutches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Sprites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
The Boss Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Events and Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
The Dragon Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Rooms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Save and Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Instances and Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Demons,Baby Dragons,and Fireballs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
The Fireball Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
The Demon Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Summoning Demons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
The Baby Dragon Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
vii
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viii ■CONTENTS
Backgrounds and Sounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
A Background Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Background Music . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Sound Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Congratulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
PART 2 ■ ■ ■ Action Games
■CHAPTER 3 More Actions: A Galaxy of Possibilities . . . . . . . . . . . . . . . . . . . 41
Designing the Game:Galactic Mail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Sprites and Sounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Moons and Asteroids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Flying Around . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Winning and Losing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
An Explosion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Scores . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Finishing Touches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
A Title Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Winning the Game . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Adding Some Visual Variety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Help Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Congratulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
■CHAPTER 4 Target the Player: It’s Fun Being Squished . . . . . . . . . . . . . . . 65
Designing the Game:Lazarus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
An Animated Character . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
A Test Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Falling Boxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Finishing Touches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
No Way Out! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Adding a Goal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Starting a Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Sounds,Backgrounds,and Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Congratulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
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■CONTENTS ix
■CHAPTER 5 Game Design: Interactive Challenges . . . . . . . . . . . . . . . . . . . . . 85
What Makes a Good Game? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Game Mechanics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Interactive Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Game Genres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Difficulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Goals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Rewards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Subgoals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Interactivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Choices and Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Control Overload! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Unfair Punishment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Audio Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
PART 3 ■ ■ ■ Level Design
■CHAPTER 6 Inheriting Events: Mother of Pearl . . . . . . . . . . . . . . . . . . . . . . . 101
Designing the Game:Super Rainbow Reef . . . . . . . . . . . . . . . . . . . . . . . . 101
A Game Framework . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
The Front-End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
The Completion Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Bouncing Starfish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Biglegs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Parent Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Lives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Normal Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Solid Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Special Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Polishing the Game . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Sound Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Saving Games and Quitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
A Slower Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Creating the Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Congratulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126