Beginning Mobile Phone Game Programming [With CD-ROM] PDF
Preview Beginning Mobile Phone Game Programming [With CD-ROM]
Michael Morrison 800 East 96th St.,Indianapolis,Indiana,46240 USA Beginning Mobile Phone Game Programming Associate Publisher Copyright©2005 by Sams Publishing Michael Stephens All rights reserved. No part of this book shall be reproduced, stored in a Acquisitions Editor retrieval system, or transmitted by any means, electronic, mechanical, Loretta Yates photocopying, recording, or otherwise, without written permission from the publisher. No patent liability is assumed with respect to the use of Development Editor the information contained herein. Although every precaution has been Mark Renfrow taken in the preparation of this book, the publisher and author assume no responsibility for errors or omissions. Nor is any liability assumed for Managing Editor damages resulting from the use of the information contained herein. Charlotte Clapp International Standard Book Number: 0-672-32665-5 Project Editor Library of Congress Catalog Card Number: 2004095066 George Nedeff Printed in the United States of America Copy Editor First Printing: October 2004 Margo Catts 07 06 05 4 3 2 Indexer Trademarks Chris Barrick All terms mentioned in this book that are known to be trademarks or Proofreader service marks have been appropriately capitalized. Sams Publishing Jessica McCarty cannot attest to the accuracy of this information. Use of a term in this book should not be regarded as affecting the validity of any trademark Technical Editor or service mark. David Franson Warning and Disclaimer Team Coordinator Every effort has been made to make this book as complete and as accu- Cindy Teeters rate as possible, but no warranty or fitness is implied. The information provided is on an “as is” basis. The author and the publisher shall have Designer neither liability nor responsibility to any person or entity with respect to Gary Adair any loss or damages arising from the information contained in this book. Page Layout Cheryl Lynch Contents at a Glance Part I Getting Started with Mobile Game Programming 1 Games on the Go 2 Mobile Java Game Development Basics 3 Constructing a Mobile Game Skeleton Part II Mobile Game Programming Essentials 4 Mobile Game Graphics 101 5 Using Sprite Animation 6 Handling Mobile User Input 7 Henway: Paying Tribute to Frogger 8 Making Noise with Tones 9 Playing Digitized Sound and Music Part III Virtual Worlds and Mobile Game Intelligence 10 Creating Tiled Game Layers 11 Managing Multiple Game Layers 12 High Seas: A Game for the Pirate in You 13 Teaching Games to Think Part IV Taking Advantage of the Wireless Network 14 Mobile Game Networking Essentials 15 Connect 4: A Classic Game Goes Wireless 16 Debugging and Deploying Mobile Games Part V Sprucing Up Your Games 17 Optimizing Mobile Java Games 18 Space Out: Paying Tribute to Space Invaders 19 Keeping Track of High Scores Part VI Appendixes A Java Game API Reference B Mobile Game Programming Resources C Creating Graphics for Mobile Games Bonus Java Programming Primer (CD-ROM) Index Table of Contents Introduction 1 Part I: Getting Started with Mobile Game Programming CHAPTER 1: Games on the Go 9 Essentials of Mobile Gaming ............................................................10 The First Mobile Phone Game ..................................................11 The Market for Mobile Games ..................................................12 The Culture of Mobile Games ..................................................12 The Bleeding Edge of Mobile Gaming ......................................13 Getting to Know Mobile Platforms ....................................................15 Java 2 Micro Edition (J2ME) ....................................................16 Binary Runtime Environment for Wireless (BREW) ....................17 Symbian ..................................................................................17 Windows Mobile Smartphone ..................................................18 Java As a Mobile Game Platform ....................................................19 What Is Java? ..........................................................................19 Why Java? ..............................................................................19 Java and Mobile Game Programming ......................................20 A Quick J2ME Primer ......................................................................22 Configurations and the Connected Limited Device Configuration (CLDC) ..............................................................23 Profiles and the MIDP ..............................................................24 Summary ........................................................................................26 Field Trip ........................................................................................27 vi Beginning Mobile Phone Game Programming CHAPTER 2: Mobile Java Game Development Basics 29 Game Design Basics ........................................................................30 Coming Up with the Basic Idea .............................................. 30 Developing the Storyline ........................................................ 31 Establishing the Play Modes .................................................... 31 A J2ME Game Development Primer ................................................ 32 Getting to Know the J2ME Wireless Toolkit ...................................... 35 Using KToolbar ...................................................................... 36 Managing MIDlet Game Projects ............................................ 37 Building a Game MIDlet ........................................................ 39 Testing a Game MIDlet .......................................................... 39 The J2ME Emulator and Physical Devices ........................................ 42 Summary ...................................................................................... 43 Field Trip ........................................................................................ 43 CHAPTER 3: Constructing a Mobile Game Skeleton 45 Exploring the J2ME APIs ................................................................ 46 The CLDC API ........................................................................ 47 The MIDP API ........................................................................ 48 Understanding MIDlets .................................................................. 50 Inside a MIDlet ...................................................................... 50 The Basics of MIDlet Development .......................................... 52 Building the Skeleton Example Program ........................................ 53 Writing the Program Code ...................................................... 54 Preparing the MIDlet for Distribution ...................................... 59 Building and Testing the Finished Product .............................. 61 Summary ........................................................................................62 Extreme Game Makeover ................................................................63 Contents vii Part II: Mobile Game Programming Essentials CHAPTER 4: Mobile Game Graphics 101 67 Mobile Graphics Basics ....................................................................68 Understanding the Graphics Coordinate System ......................68 Learning the Basics of Color ....................................................70 Working with Graphics in J2ME ......................................................72 Drawing Graphics Primitives ....................................................73 Drawing Text ..........................................................................77 Drawing Images ......................................................................79 Building the Olympics Example Program ........................................81 Writing the Program Code ......................................................81 Testing the Finished Product ....................................................84 Building the Slideshow Example Program ........................................84 Writing the Program Code ......................................................84 Testing the Finished Product ....................................................89 Summary ........................................................................................90 Extreme Game Makeover ................................................................90 CHAPTER 5: Using Sprite Animation 91 Understanding Animation ..............................................................92 Animation and Frame Rate ......................................................92 Making the Move to Computer Animation ..............................93 2D Versus 3D Animation ..........................................................94 Analyzing 2D Sprite Animation ......................................................95 Frame-Based Animation ..........................................................95 Cast-Based Animation ............................................................96 Applying Sprite Animation to Mobile Games ................................102 Working with the Layer and Sprite Classes ..................................103 viii Beginning Mobile Phone Game Programming Achieving Smooth Animation with the GameCanvas Class ..............106 Building the UFO Example Program ..............................................108 Writing the Program Code ......................................................108 Testing the Finished Product ..................................................116 Summary ......................................................................................116 Extreme Game Makeover ..............................................................117 CHAPTER 6: Handling Mobile User Input 119 Assessing Mobile Game Input ........................................................120 Handling Key Input with the GameCanvas Class ..............................121 Revisiting the Sprite Class ............................................................123 Detecting Sprite Collisions ......................................................123 Working with Frame-Animated Sprites ..................................125 Building the UFO 2 Example ..........................................................127 Writing the Program Code ......................................................127 Testing the Finished Product ..................................................133 Summary ......................................................................................134 Extreme Game Makeover ..............................................................134 CHAPTER 7: Henway: Paying Tribute to Frogger 135 The Scoop on Henway ....................................................................136 Designing the Game ......................................................................138 Developing the Game ....................................................................139 Writing the Game Code ..........................................................140 Testing the Game ..........................................................................151 Summary ......................................................................................153 Extreme Game Makeover ..............................................................154 CHAPTER 8: Making Noise with Tones 155 Sound and Mobile Games ..............................................................156 A Tonal Sound and Music Primer ..................................................157 Querying a Phone for Its Audio Capabilities ..................................159 Playing Tones in Mobile Games ....................................................162 Contents ix Playing Individual Tones ........................................................163 Playing a Tone Sequence ........................................................164 Building the UFO 3 Example Program ............................................168 Writing the Program Code ......................................................169 Testing the Finished Product ..................................................174 Summary ......................................................................................174 Field Trip ......................................................................................174 CHAPTER 9: Playing Digitized Sound and Music 175 A Digitized Sound Primer ..............................................................176 Getting to Know Wave Sounds ......................................................177 Creating and Editing Wave Sounds ................................................179 Revisiting the Player Interface ......................................................180 Playing Wave Sounds in Mobile Games ..........................................182 Playing a Wave from a JAR File ..............................................182 Playing a Wave from a URL ..................................................184 Feeling the Music with MIDI ..........................................................184 Playing MIDI Music in Mobile Games ............................................186 Playing a MIDI Song from a JAR File ......................................186 Playing a MIDI Song from a URL ..........................................187 Building the Henway 2 Example Game ..........................................188 Writing the Game Code ..........................................................189 Testing the Finished Product ..................................................193 Summary ......................................................................................193 Field Trip ......................................................................................194 Part III: Virtual Worlds and Mobile Game Intelligence CHAPTER 10: Creating Tiled Game Layers 197 What Is a Tiled Layer? ..................................................................198 Creating Maps for Tiled Layers ......................................................200 Using the Mappy Map Editor ..................................................201 Using the Tile Studio Map Editor ............................................205 Formatting Map Information for Games ................................206
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