a0008 xna 3 0 game programming recipe morebook vn 8686

XNA 3.0 Game Programming Recipes A Problem-Solution Approach Riemer Grootjans... XNA 3.0 Game Programming Recipes: A Problem-Solution ApproachCopyright © 2009 by Riemer Grootjans All rig

XNA 3.0 Game

Programming Recipes

A Problem-Solution Approach

Riemer Grootjans

XNA 3.0 Game Programming Recipes: A Problem-Solution Approach

Copyright © 2009 by 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): 978-1-4302-1855-5

ISBN-13 (electronic): 978-1-4302-1856-2

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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: Ewan Buckingham

Development Editor: Joohn Choe

Technical Reviewer: Fabio Claudio Ferracchiati

Editorial Board: Clay Andres, Steve Anglin, Mark Beckner, Ewan Buckingham, Tony Campbell,

Gary Cornell, Jonathan Gennick, Michelle Lowman, Matthew Moodie, Jeffrey Pepper,

Frank Pohlmann, Ben Renow-Clarke, Dominic Shakeshaft, Matt Wade, Tom Welsh

Project Manager: Richard Dal Porto

Copy Editors: Heather Lang, Kim Wimpsett

Associate Production Director: Kari Brooks-Copony

Production Editor: Elizabeth Berry

Compositor: Linda Weidemann, Wolf Creek Publishing Services

Proofreader: April Eddy

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Artist: April Milne

Cover Designer: Kurt Krames

Manufacturing Director: Tom Debolski

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To Elisa, the most lovely woman I know

Without your love and support, this would not have been possible.

To my parents and brothers, for giving me each and every opportunity.

To my friends and coworkers, for their support and laughs.

Contents at a Glance

About the Author xxiii

About the Technical Reviewer xxv

Acknowledgments xxvii

Introduction xxix

CHAPTER 1 Getting Started with XNA 3.0 1

CHAPTER 2 Setting Up Different Camera Modes in Your 3D World 29

CHAPTER 3 Working with 2D Images/Textures in XNA 3.0 173

CHAPTER 4 Working with Models 281

CHAPTER 5 Getting the Most Out of Vertices 393

CHAPTER 6 Adding Light to Your Scene in XNA 3.0 521

CHAPTER 7 Adding Sounds to Your XNA 3.0 Project 583

CHAPTER 8 Networking in XNA 3.0 599

INDEX 631

NI N D E X

648

defining TypeWriter capable of

serial-izing object of MapData class, 463

overview, 460–462

overview, 393–394

redundant, removing using indices,

413–417

rendering multiple lines, 401

rendering multiple points, 401

rendering multiple triangles

using TriangleFan, 402

using TriangleList, 399–400

using TriangleStrip, 400–401

rendering triangle to screen, 397–399

sharing normals between, 528–532

storing in DynamicVertexBuffer, 423–425

storing in memory of graphics card,

417–422

IndexBuffer, 421–422

overview, 417–420

VertexBuffer, 420

in VertexBuffer, automatically calculating

normals for, 429–435

GenerateNormalsForTriangleList

Method, 431–432

making method fail-safe, 434

overview, 429–430

starting from VertexBuffer and

Index-Buffer, 434–435

for structure rendered as TriangleList,

432–433

for structure rendered as TriangleStrip,

433–434

of triangle, 431

writing custom content importer

calculating collision point between

pointer and terrain, 166

Intermediate class, 168

overview, 166

receiving data in content processor,

169–170

vertices array, 418, 433, 435

view frustum, 30, 32, 37

View matrix, 17, 20, 30, 34, 47, 52, 55, 395

viewAngle variable, 576

viewMatrix node, 98

viewMatrix variable, 45–46

ViewProjection matrix, 244, 275, 565

Visual Studio 2008, installing, 2

W

WakeUp method, 199

walls, collision with, 66

.wav files

playing and controlling, 583–585

through XAct, 586–590

WaveBank method, 589 waves, 587

while loop, 101, 394, 402, 439, 440, 444, 455,

457, 459–460, 468–469, 502 WMV audio files, playing, 585–586 world matrices

ensuring correct lighting when using, 541–542

objects in sight of camera, 60–63 setting different world matrices for differ-ent objects, 286–293

combining multiple transformations, 288

order of matrix multiplication, 288–292 overview, 286–288

updating, 99–101 worldMatrix node, 97 worldMatrix property, 93 worldMatrix variable, 92 WorldViewProjection matrix, 272 Wrap method, 410

Wrapping mode, 410 Write method 353, 362, 614 WriteBone method, 314–316 WriteModelMesh method, 314–316 WriteModelStructure method, 314–316

X

.x file, 282 XAct, 586 xAllowedRotDir variable, 244 xAmbient variable, 542 xap file, 588

xBlurSize variable, 158–159 Xbox 360 console, 6 Xbox 360, deploying games on, 5–8 connecting Xbox 360 and PCs, 6 Creators Club licenses, 6 generating projects from existing XNA 2.0 projects, 7–8

installing XNA Game Studio Connect, 6 overview, 5–6

pairing PCs and Xbox 360, 7 Xbox Live accounts, 6 Xbox Live accounts, setting up, 6 Xbox Live Marketplace, 5 xCamUp parameter, 248 xCamUp variable, 247 xConeAngle variable, 552 xConeDecay variable, 553 xConeDirection variable, 552 xgs binary file, 588

XImporter method, 215–216 xLightDirection parameter, 546 xLightStrength value, 557

NI N D E X 649

xLightStrength variable, 556

xMirrorTexture variable, 271–275, 278–279

.xml file, 461

XML file, loading data from, 460–465

creating XNA-compatible XML file from

existing object, 464–465

defining custom MapData class, 462

defining TypeReader capable of serializing

object of MapData class, 463

defining TypeWriter capable of serializing

object of MapData class, 463

overview, 460–462

XmlSerializer class, 23, 27

XNA, 491–492, 503–504

XNA 2.0 Framework files, installing, 10

XNA code, Skybox, 84–86

XNA Framework Redistributable 2.0, 10

XNA Game Studio 3.0, 28

deploying games

on PCs, 10

on Xbox 360, 5–8

on Zune, 8–9

.fx HLSL files, 5

game loop timing, 12–14

Draw method frequency, 14

IsRunningSlowly variable, 13

overview, 12

Update method frequency, 13

GameComponent class, 14–23

changing updating order of, 22–23

DrawableGameComponent class, 15–16

making subscribe to interfaces, 20

overview, 14–20

subscribing to ICameraInterface

service, 20–21

using GameComponent class, 17–18

using multiple, 21–22

installing, 1–2

overview, 1

predefined methods, 3–4

Draw method, 4–13

Game1 constructor, 4

Initialize method, 4 LoadContent method, 4 overview, 3

UnloadContent method, 4 Update method, 4 saving/loading data, 23–28 creating StorageDevice method asynchronously, 24–25 loading data from disks, 27–28 overview, 23–24

saving data to disks, 26–27 starting, 3

starting new projects, 3 XNA Game Studio Connect program, 6–8 XNA Game Studio Device Center 7, 9 XNA project, accessing data in, 363–364 XNA-compatible XML file, creating from existing object, 464–465

<XNAContent> tag, 460 XNA-to-HLSL variables, 478, 487–488, 495–496

XNAUtils class, 102 XNAUtils file, 301 xnb binary file, 214–215 xnb file, 215–216, 224 xPreviousShadingMapContents variable, 578 xRelative value, 450

xTexStretch variable, 487 xTexture variable, 335, 577 xTime variable, 151, 257–258, 260, 498 xWaveHeights variable, 495, 497, 499, 504–505

xWaveLengths variable, 495, 497, 499, 504–505

xWaveSpeeds variable, 497

Z

z-buffer (or depth buffer), 36–37, 78, 263 zRelative value, 450

Zune, deploying games on, 8–9