Game Engine Black Book: Doom (v1.1)

432 Pages·2019·12.389 MB·English

by  Fabien Sanglard

GAME ENGINE
BLACK BOOK
DOOM
FABIEN SANGLARD
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Copyright
In order to illustrate how the DOOM game engine works, a few screenshots, images,
sprites, and textures belonging to and copyrighted by id Software are reproduced in this
book. Thefollowingitemsareusedunderthe"fairuse"doctrine:
1. Allin-gamescreenshots,titlescreen.
2. Allin-gamemenuscreenshots.
3. All3Dsequencetextures.
4. All3Dsequencesprites.
5. AllscreenshotsofDOOM.
6. DOOMname.
Photographswith"ROME.RO"watermarkbelongtoJohnRomeroandarereproducedwith
hisauthorization.
DOOMSurvivor’sStrategies&SecretsessaysarecopyrightedbyJonathanMendozaand
reproducedwithhisauthorization.
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Acknowledgments
Manypeoplehelpedcompletingthisbook. Manythanksaredue:
To John Carmack, John Romero, and Dave Taylor for sharing their memories of DOOM
developmentandansweringmymanyquestions.
Topeoplewhokindlydevotedtimetothepainfulproofreadingprocess,AurelienSanglard,
Jim Leonard, Dave Taylor, Jonathan Dowland, Christopher Van Der Westhuizen, Eluan
Miranda, Luciano Dadda, Mikhail Naganov, Leon Sodhi, Olivier Cahagne, Andrew Stine,
andJohnCorrado.
ToSimonHoward,fornotonlyproofreadingbutalsosendingpullrequeststothegitrepo.
Hiseffortssavedcountlesshoursatatimewherethedeadlinewasconcernedlyclose.
ToJimLeonardwhoonceagainvolunteeredhistimeandencyclopedicknowledgeofaudio
hardwareandsoftware(theRolandsectionwasheavilybasedonhisarticles).
To Foone Turing who volunteered his fleet of 386s, 486s, and ISA/VLB VGA cards to ac-
curatelybenchmarkDOOM.
To Andrew Stine, founder of doomworld.com, for sharing his encyclopedic knowledge of
DOOMandputtingmeintouchwiththerightpeople.
ToJamesMillerandLeonZawadawhoresearchedanddiscoveredtheoriginoftheback-
grounds. James also collected and photographed all toy props used to shape DOOM
weapons.
ToRobBlessin,founderandownerofBlackHole,Incforansweringallmyquestionsabout
NeXT,helpingmeassembleaNeXTstation,andlendingmearareNeXTdimensionboard.
IfyoueverwanttorestoreaNeXToracquireyourown,Robislikelyagoodstartingpoint.
To Alexey Khokholov, author of PCDoom-v2. His backport helped to generate accurate
performancemetrics.
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To Alexandre-Xavier Labonté-Lamoureux for his patch restoring C drawing routines in
PCDoom-v2.
To Simon Judd, author of Slade3, a map editor used to create maps showcasing special
aspectsoftherenderer.
To Colin Reed and Lee Killough for their node builder, BSP 5.2, which was used to inject
mapsintotheDOOMengine.
To the developers of Chocolate DOOM which was heavily hacked to generate many ex-
planatoryscreenshots.
ToBruceNaylorforkindlymakingtimeforaninterviewandenlighteningmewithhismaster
knowledgeofBSPs.
ToJohnMcMasterforhisinsanelyhighresolutionphotosofIntel486andMotorola68040
CPUs.
To Romain Guy for taking the pictures of my 486 motherboard, my NeXTCube mother-
board,andmyNeXTDimensionmotherboard.
To Samuel Villarreal for finding the origin of the BFG artwork and reverse engineering
DOOMconsoleanimatedfire.
To Rebecca Heineman (author of DOOM 3DO) for proof-reading and fact checking the
3DOsection.
To Carl Forhan, owner and founder of Songbird Productions for releasing DOOM Jaguar
sourcecodeandansweringmyquestions.
ToLeonSodhi,forsharinghisstudiesofDOOMwallrendition.
ToJohnCorrado,forsharinghisknowledgeofvisplanes.
ToMatthewSFell,authoroftheUnofficialDOOMspecswhichwasinstrumentalinbuilding
themapvisualizerfeaturedinthisbook.
ToAlexandre-XavierLabonté-LamoureuxforprovidingtheSNESscreenshotdemonstrat-
ingditheringanddiminishedlightning.
To Aiden Hoopes, Alexandre-Xavier Labonté-Lamoureux (axdoomer), Anders Montonen,
coucouf,BartoszPikacz,BartoszTaudul,BorisFaure@billiob,BrandonLong,BrianGilbert
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@troldann,Chris@JayceAndTheNews,DanielLoNigro,DanielMonteiro,DavideGualano
@davesio,GeorgeTodd,GuilhermeManika,JamisEichenauer,JohnCorrado,KlausPost,
Marcel Lanz, Marcell Baranyai, Marco Pesce, Marcus Dicander, Matt Riggott, Matthieu
Nelmes,MiltiadisKoutsokeras,OlivierCahagne,OlivierNeveu,PatrickHresko,phg,Richard
Adem@richy486,RoryDriscoll,RyanCook,SamWilliamson,SteveHoelzer,TorH.Hau-
gen @torh, tronster, Tzvetan Mikov, Vasil Yonkov, Frank Polster, Boris Chuprin, Rory
O’KennyandVincentBernatforreportingerrata.
–FabienSanglard
[email protected]
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How To Send Feedback
This book strives to be as accurate and as clear as possible. If you find factual errors,
spellingmistakes,ormerelyambiguities,pleasetakeafewminutestoreportthemonthe
GameEngineBlackBook: DOOM companionwebpagelocatedat:
http://fabiensanglard.net/gebbdoom
Thanks:) !
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