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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

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

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Contents at a Glance

Foreword xiii

About the Authors xv

About the Technical Reviewer xvii

Acknowledgments xix

Introduction xxi

■ CHAPTER 1 Game Planning and Programming Basics 1

■ CHAPTER 2 2D Graphics, Audio, and Input Basics 15

■ CHAPTER 3 Creating Your First 2D Game 39

■ CHAPTER 4 Improving Your First 2D Game 61

■ CHAPTER 5 Basics of Game Networking 117

■ CHAPTER 6 Rock Rain Live! 151

■ CHAPTER 7 Rock Rain Zune 183

■ CHAPTER 8 3D Game Programming Basics 199

■ CHAPTER 9 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

Contents

Foreword xiii

About the Authors xv

About the Technical Reviewer xvii

Acknowledgments xix

Introduction xxi

■ CHAPTER 1 Game Planning and Programming Basics 1

Planning the Game 1

Target Market 1

Game Genre 2

The Game Team 2

Game Planning 3

XNA Game Programming Concepts 5

General Game Structure 7

Game Initialization 9

Game Finalization 11

Game Loop 11

Summary 13

■ CHAPTER 2 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

■ I N D E X

user input

keyboard, 31

mouse, 31

overview of, 29

Xbox 360 gamepad, 30–31

using statement, creating object in, 8

■ V

varying input data, 231

Vector2 class, 18

Vector3 class

Cross method, 243, 245

Lerp method, 249

Vector3 data type

methods of, 205

shortcuts of, 206

vertices and, 201

vectors

3-D games, 205–206

camera coordinate system, 244–246

velocity property (clsSprite class), 24–25

vertex buffer, coding for 3-D axis, 211–215

vertex grid, 6x6, created over x,z plane, 261

vertex processing

AnimatedModel class, 331–333

for normal mapping, 290

vertex shaders

See also techniques

description of, 228

semantics, 231

for terrain effect, 280–281

vertex structures, predefined, 266

VertexBuffer for terrain mesh, 267

VertexPositionNormalTangentBinormalText

ure, defining, 266–267

vertices 3-D games, 201–205 coding for 3-D axis, 211–215 mesh, 266, 324–325

moving triangle up Y axis and, 206 normalizing weights of, 325 representing as matrices, 207 terrains

generating position and texture coordinate, 269–272

normal vector, 272–273 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, 5

■ W

walking character, animating, 299 Wander method (Enemy class), 376–377 Wandering state (Enemy class), 375–376 wave bank operations (XACT), 33 WaveBank object, 36

web sites Apress, 396 Augusto, Carlos, 366 Entertainment Software Association, 2 image editors, 19

Microsoft Developer Network Platformer Starter Kit example, 16 Psionic, 372

recommended, 396–397 Sharp Games community sites, 396 SpriteLIB GPL, 43

Xbox LIVE Community Games, 126 XNA Creators Club, 5, 397

422 ■ I N D E X

weights of vertex, normalizing, 325

window size, changing, 23

world matrix, 209

World property (BasicEffect class), 222

world transformation, 258

writing custom user data

(AnimatedModelProcessor class), 316–318

■ X

X (DirectX File) format, 301

XACT (Microsoft Cross-Platform Audio

Creation Tool), 32–34 Xbox 360

gamepad, user input from, 30–31

modifying and deploying Rock Rain to,

57–59 skeletal animation and, 307

Xbox LIVE (Microsoft)

Community Games, 126

profile, creating, 127–131

XNA 3.0 Game Programming Recipes

(Grootjans), 396 XNA Creators Club

Billboards sample, 16

web site, 5, 397

XNA Game Studio, downloading, 5 XNA Game Studio Device Center with Zune added, 196

■ Z

Zune platform deploying game on, 196–198 menu changes for Rock Rain version for, 187

modifying classes for Rock Rain version for

ActionScene class, 195–196 Game1 class, 193–195 HelpScene class, 186–187 Meteor class, 188–190 MeteorsManager class, 192 Player class, 190–192 PowerSource class, 187–188 StartScene class, 192–193 organizing Rock Rain version for, 184–185 planning Rock Rain version for, 183–184