UDS Contents

• 1. Introduction to the Unofficial DOOM Specs
  • 1.1. DOOM
  • 1.2. Heretic
  • 1.3. Hexen: Beyond Heretic
  • 1.4. Legalese
  • 1.5. The Hypertext Unofficial DOOM Specs
• 2. The Basics
  • 2.1. WADs
  • 2.2. PWADs
  • 2.3. DOOM version information
  • 2.4. Terminology conventions
• 3. List of DOOM.WAD Directory Entries
• 4. The Levels
  • 4.1. ExMy or MAPxx
  • 4.2. The THING resource
    • 4.2.1. THING Structure
    • 4.2.2. Facing Angle
    • 4.2.3. THING Attribute (or Option) flags
      • 4.2.3.1. Skill level appearances
      • 4.2.3.2. Deaf and dormant guards
      • 4.2.3.3. Hexen Player-Class appearances
      • 4.2.3.4. Multi-player game appearances
    • 4.2.4. Hexen THING Specials
    • 4.2.5. Activating/deactivating Hexen THINGS
    • 4.2.6. DOOM and DOOM II THINGS
      • 4.2.6.1. Types of DOOM THINGS
        • 4.2.6.1.1. DOOM Sprite Sequences
        • 4.2.6.1.2. DOOM THING Properties
      • 4.2.6.2. DOOM THING Sizes
    • 4.2.7. Heretic THINGS
    • 4.2.8. Hexen THINGS
  • 4.3. LINEDEFS
    • 4.3.1. LINEDEF structure
      • 4.3.1.1. The handedness of lines
    • 4.3.2. LINEDEF Flags
      • 4.3.2.1. Texture pegging
      • 4.3.2.2. Automap line colours
      • 4.3.2.3. Sound propagation
    • 4.3.3. LINEDEF Special Effects
      • 4.3.3.1. DOOM, DOOM II and Heretic Line Specials
      • 4.3.3.2. Hexen Line Special Actions
  • 4.4. SIDEDEFS
    • 4.4.1. SIDEDEF function
    • 4.4.2. SIDEDEF structure
    • 4.4.2. Using Textures
  • 4.5. VERTEXES
  • 4.6. The Binary Space Partition
    • 4.6.1. SEGS
    • 4.6.2. SSECTORS
    • 4.6.3. NODES
  • 4.7. SECTORS
    • 4.7.1. Special Sector Types
  • 4.8. REJECT
  • 4.9. BLOCKMAP
  • 4.10. MAPINFO (Hexen only)
  • 4.11. BEHAVIOR (Hexen only)
• 5. Graphics
  • 5.1. Picture Format
• 6. Flats (Floor and Ceiling Textures)
  • 6.1. Animated Floors
• 7. Sounds and Music
  • 7.1. PC Speaker Sound Effects
  • 7.2. Soundcard Sound Effects
  • 7.3. Music
  • 7.4. GENMIDI
  • 7.5. DMXGUS
• 8. Miscellaneous Lumps
  • 8.1. PLAYPAL
  • 8.2. COLORMAP
  • 8.3. ENDOOM
  • 8.4. TEXTURE1 and TEXTURE2
    • 8.4.1. Animated Walls
    • 8.4.2. The SKY Textures
  • 8.5. PNAMES
  • 8.6. DEMOs
    • 8.6.1. Level changes from 1.2 to 1.666 DOOM.WAD
  • 8.7. Poly Objs (Hexen only)
• 9. Savegame Files
• 10. The DOOM.EXE File
  • 10.1. Version 1.2 DOOM.EXE Data Segment Overview
  • 10.1. Version 1.666 DOOM.EXE Data Segment Overview
  • 10.3. Detail on some EXE Data Structures
• 11. Hexen differences
  • 11.1. Hexen Data Structures
  • 11.2. Hexen Scripting Language
• DOOM Appendices
  • A.1. Backus-Naur Form definitions of wad elements
  • A.2. Engine limits
  • A.3. DOOM.WAD changes and errors
• Hexen Appendices
  • B.1. List of Spawnable Objects
  • B.2. List of Activatable Objects
  • B.3. List of Objects which need to use their own arguments
  • B.4. List of Sector Specials
  • B.5. List of Hexen's Special Actions
    • B.5.1 Hexen Door Actions
    • B.5.2 Hexen Other Ceiling Actions
    • B.5.3 Hexen Combined Floor and Ceiling Actions
    • B.5.4 Hexen Simple Floor Actions
    • B.5.5 Hexen Moving Platform Actions
    • B.5.6 Hexen Stair Actions
    • B.5.7 Hexen Lighting Actions
    • B.5.8 Hexen Thing Actions
    • B.5.9 Hexen PolyObject Actions
    • B.5.10 Hexen Script Actions
    • B.5.11 Hexen Miscellaneous Effects
  • B.6. Hexen Sector Sounds Reference Codes
  • B.7. Key Reference Codes
  • B.8. List of Predefined ACS symbols
• General Appendices
  • C.1. Other helpful documents
  • C.2. Acknowledgments

• UDS Home page.
• Disclaimers and legal stuff.
• The Reference Tables.
• Finished, thank you.

This page is part of The WADster's Guide on the World Wide Web,
copyright (©) 1995 Steve Benner. All rights reserved.
DOOM and DOOM II are trademarks of id Software inc. Heretic and Hexen are trademarks of Raven Software, inc.

I am grateful to CRES for providing space on their server for these pages.