ProfessionalHTML5MobileGameDevelopment

Professional HTML5 Mobile Game DevelopmentPROFESSIONALHTML5 Mobile Game DevelopmentPascal rettigWILEYJohn wiley sons, IncProfessional HTML5 Mobile Game DevelopmentPublished byJohn Wiley Sons, Inc0475 Crosspoint BoulevardIndianapolis, IN 46256www.wiley.comCopyright@ 2012 by Pascal rettigPublished by John Wiley Sons, Inc, Indianapolis, IndianaPublished simultancously in CanadaISBN:978-1-118-30132-6ISBN:978-1-118-30133-3(ebk)ISBN:978-1-11842144-4(ebk)ISBN:978-1-118-43394-2(cbk)Manufactured in the united states of america10987654321No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any meanselectron ic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, or authorizationthrough payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers,MA01923,(978)750-8400, fax(978)646-8600 Requests to the publisher for permission should be addressed to thePermissions Dcpartmcnt, John Wilcy Sons, Inc, 111 River Strcct, Hoboken, NJ 07030,(201)748-6011, fax(201)7486008,oronlineathttp://www.wileycom/go/permissions.Limit of Liability/ Disclaimer of Warranty: The publisher and the author make no representations or warranties withrespect to the accuracy or completeness of the contents of this work and specifically disclaim all warranties, includingwithout limitation warranties of fitness for a particular purpose. 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JohnWiley Sons, Inc, is not associated with any product or vendor mentioned in this bookThis book is dedicated to my wife, business partner,best friend, and all-around support system, MarthaThank youCREDITSEXECUTIVE EDITORVICE PRESIDENT AND EXECUTIVE GROUPCarol LongPUBLISHERRichard swalePROJECT EDITORJennifer LynnVICE PRESIDENT AND EXECUTIVE PUBLISHERNeil eddeTECHNICAL EDITORChris UllmanASSOCIATE PUBLISHERPRODUCTION EDITORChristine mugnoloPROJECT COORDINATOR. COVERKatie crockCOPY EDITORSan dee phillipsCOMPOSITORJeff Lytle, Happenstance Type-O-RamaEDITORIAL MANAGERMary Beth WakefieldPROOFREADERNancy CarrascoFREELANCER EDITORIAL MANAGERRosemarie grahamINDEXERJohnna∨ an hoose dinseASSOCIATE DIRECTOR OF MARKETINGDavid mayhewCOVER DESIGNERRyan sneedMARKETING MANAGERAshley ZurcherCOVER IMAGEC Daniel Schweinert /iStockPhotoBUSINESS MANAGERAmy KniesPRODUCTION MANAGERTim tateABOUT THE AUTHORPASCAL RETTIG is a lifelong programmer who got his start programming by writing BASiC games on the apple ii at the ripe age of 7. Pascalhas a bachelor of science and a master of Engineering in computer sci-ence and electrical engineering from the Massachusetts Institute oTechnology '02 and has been hacking and building stuff on the web si1995. Pascal built the htmls game-based language learning systemGamesForLanguage com in 2011 and is currently a partner at the interactive web agency Cykod He organizes one of the country's oldest monthlyHTML5 Gamc Dcvclopment mcctups in Boston cach month and runs the Html5 gamcevelopment news site htm15gamedevelopment. org.ABOUT THE TECHNICAL EDITORCHRIS ULLMAN is a senior software developer at MIG, specializing in. NET,and a technical editor/author, who has spent many years stewing in webrelated technologies, like a teabag left too long in the pot. Coming from acomputer science background, he gravitated toward MS solutions duringthe summer of ASP(1997). He cut his teeth on Wrox Press asp guidesand since then he has edited or contributed to more than 30 books. mostnotably as lead author for Wrox's bestselling Beginning AsP/AsP.NEt1. x/2 series. These days he lives out on the moors of Cornwall and spendshis non-computing time running writing music, and attempting with his wife, Kate, to curb theenthusiasm of three very boisterous childrenACKNOWLEDGMENTSPD LIKE TO THANK MY WIFE, Martha, who not only had to put up with me spending every momentof free time i had writing this book (while working on two startups) but also was gracious enoughto design all the custom game art used in this book, ensuring that readers aren't stuck with thedreaded curse of programmer artI'd also like to thank my family for supporting me in this endeavor and continuing to accept mc as afamily member despite my best efforts to lock myself away for the duration.I'd like to particularly thank my editors, Carol Long, Jennifer Lynn, and San Dee Phillips, for helping a newbie author through the process of turning some pages of code into a cohesive book; andtechnical reviewer Chris Ullman, who did his best to ensure this book made it to print as error-freeas possibleLastly, I'd like to thank the Boston HTML5 Game Development community. Boston has an incredible technology community, and being around such motivated, smart people keeps me learningenergized, and constantly hacking away at new projects