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Beginning XNA 3.0 Game Programming From Novice to Professional ■■■ Alexandre Santos Lobão, Bruno Evangelista, José Antonio Leal de Farias, and Riemer Grootjans Beginning XNA 3.0 Game Programming: From Novice to Professional Copyright © 2009 by Alexandre Santos Lobão, Bruno Evangelista, José Antonio Leal de Farias, Riemer Grootjans 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 ISBN-13 (pbk): 978-1-4302-1817-3 ISBN-13 (electronic): 978-1-4302-1818-0 Printed and bound in the United States of America 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 Editors: Ewan Buckingham, Joohn Choe Technical Reviewer: Fabio Claudio Ferracchiati Editorial Board: Clay Andres, Steve Anglin, Mark Beckner, Ewan Buckingham, Tony Campbell, Gary Cornell, Jonathan Gennick, Jonathan Hassell, Michelle Lowman, Matthew Moodie, Duncan Parkes, Jeffrey Pepper, Frank Pohlmann, Ben Renow-Clarke, Dominic Shakeshaft, Matt Wade, Tom Welsh Project Manager: Sofia Marchant Copy Editor: Marilyn Smith Associate Production Director: Kari Brooks-Copony Production Editor: Laura Esterman Senior Compositor: Susan Glinert Proofreader: Greg Teague Indexer: Becky Hornyak 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, New York, NY 10013 Phone 1-800-SPRINGER, fax 201-348-4505, e-mail orders ny@springer sbm.com, or visit http://www.springeronline.com For information on translations, please contact Apress directly at 2855 Telegraph Avenue, Suite 600, Berkeley, CA 94705 Phone 510-549-5930, fax 510-549-5939, e-mail info@apress.com, or visit http:// www.apress.com Apress and friends of ED books may be purchased in bulk for academic, corporate, or promotional use eBook versions and licenses are also available for most titles For more information, reference our Special Bulk Sales–eBook Licensing web page at http://www.apress.com/info/bulksales The information in this book is distributed on an “as is” basis, without warranty Although every precaution has been taken in the preparation of this work, neither the author(s) nor Apress shall have any liability to any person or entity with respect to any loss or damage caused or alleged to be caused directly or indirectly by the information contained in this work The source code for this book is available to readers at http://www.apress.com Contents at a Glance Foreword xiii About the Authors xv About the Technical Reviewer xvii Acknowledgments xix Introduction xxi ■CHAPTER Game Planning and Programming Basics ■CHAPTER 2D Graphics, Audio, and Input Basics 15 ■CHAPTER Creating Your First 2D Game 39 ■CHAPTER Improving Your First 2D Game 61 ■CHAPTER Basics of Game Networking 117 ■CHAPTER Rock Rain Live! 151 ■CHAPTER Rock Rain Zune 183 ■CHAPTER 3D Game Programming Basics 199 ■CHAPTER Rendering Pipeline, Shaders, and Effects 227 ■CHAPTER 10 Lights, Camera, Transformations! 241 ■CHAPTER 11 Generating a Terrain 261 ■CHAPTER 12 Skeletal Animation 299 ■CHAPTER 13 Creating a Third-Person Shooter Game 337 ■CHAPTER 14 Closing Words 395 ■INDEX 399 iii Contents Foreword xiii About the Authors xv About the Technical Reviewer xvii Acknowledgments xix Introduction xxi ■CHAPTER Game Planning and Programming Basics Planning the Game Target Market Game Genre The Game Team Game Planning XNA Game Programming Concepts General Game Structure Game Initialization Game Finalization 11 Game Loop 11 Summary 13 ■CHAPTER 2D Graphics, Audio, and Input Basics 15 2D Graphics 15 Common Gaming Terms 15 2D and Screen Coordinate Systems 16 Drawing a Sprite Using XNA 18 Moving the Sprite on the Screen 24 Coding for Collision Detection 26 Game Input 29 Using the Xbox 360 Gamepad 30 Using the Keyboard 31 Using the Mouse 31 Game Audio 32 Creating Audio Content with XACT 32 Using Audio in Games 35 Summary 37 v ■I N D E X user input vertices keyboard, 31 3-D games, 201–205 mouse, 31 coding for 3-D axis, 211–215 overview of, 29 mesh, 266, 324–325 Xbox 360 gamepad, 30–31 moving triangle up Y axis and, 206 using statement, creating object in, normalizing weights of, 325 ■V representing as matrices, 207 varying input data, 231 terrains generating position and texture coordinate, 269–272 Vector2 class, 18 Vector3 class normal vector, 272–273 Cross method, 243, 245 Lerp method, 249 Vector3 data type methods of, 205 shortcuts of, 206 vertices and, 201 vectors tangent and binormal vectors, 273–275 vibration effect, adding to Rock Rain, 56–57 view matrix, 209, 243–244 viewport, aspect ratio and, 209 Visual C# Express Edition, downloading, ■W 3-D games, 205–206 walking character, animating, 299 camera coordinate system, 244–246 Wander method (Enemy class), 376–377 velocity property (clsSprite class), 24–25 Wandering state (Enemy class), 375–376 vertex buffer, coding for 3-D axis, 211–215 wave bank operations (XACT), 33 vertex grid, 6x6, created over x,z plane, 261 WaveBank object, 36 vertex processing web sites AnimatedModel class, 331–333 Apress, 396 for normal mapping, 290 Augusto, Carlos, 366 vertex shaders Entertainment Software Association, See also techniques image editors, 19 description of, 228 Microsoft Developer Network semantics, 231 for terrain effect, 280–281 Platformer Starter Kit example, 16 Psionic, 372 vertex structures, predefined, 266 recommended, 396–397 VertexBuffer for terrain mesh, 267 Sharp Games community sites, 396 VertexPositionNormalTangentBinormalText ure, defining, 266–267 SpriteLIB GPL, 43 Xbox LIVE Community Games, 126 XNA Creators Club, 5, 397 421 422 ■I N D E X weights of vertex, normalizing, 325 XNA Game Studio, downloading, window size, changing, 23 world matrix, 209 XNA Game Studio Device Center with Zune added, 196 World property (BasicEffect class), 222 ■Z world transformation, 258 Zune platform writing custom user data (AnimatedModelProcessor class), 316–318 deploying game on, 196–198 ■X modifying classes for Rock Rain version for X (DirectX File) format, 301 menu changes for Rock Rain version for, 187 XACT (Microsoft Cross-Platform Audio Creation Tool), 32–34 ActionScene class, 195–196 Xbox 360 HelpScene class, 186–187 Game1 class, 193–195 gamepad, user input from, 30–31 Meteor class, 188–190 modifying and deploying Rock Rain to, 57–59 MeteorsManager class, 192 skeletal animation and, 307 PowerSource class, 187–188 Xbox LIVE (Microsoft) Player class, 190–192 StartScene class, 192–193 Community Games, 126 organizing Rock Rain version for, 184–185 profile, creating, 127–131 planning Rock Rain version for, 183–184 XNA 3.0 Game Programming Recipes (Grootjans), 396 XNA Creators Club Billboards sample, 16 web site, 5, 397 .. .Beginning XNA 3. 0 Game Programming From Novice to Professional ■■■ Alexandre Santos Lobão, Bruno Evangelista, José Antonio Leal de Farias, and Riemer Grootjans Beginning XNA 3. 0 Game Programming: ... vertices keyboard, 31 3- D games, 201 – 205 mouse, 31 coding for 3- D axis, 211–215 overview of, 29 mesh, 266, 32 4? ?32 5 Xbox 36 0 gamepad, 30 ? ?31 moving triangle up Y axis and, 206 using statement,... 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