DEHEXTRA

DEHEXTRA, also known as DeHackEd Extended or DeHackEd Extra, is an extension for DeHackEd patches. It provides a significant increase in the number of things and sprites that can be utilized, in addition to the inclusion of 2,910 new states or codepointers. These can be utilized for new map object types, new non-replacing monsters and decorations, or to add additional frames to existing things for smoother animations.

Features

 * 2,910 additional states/codepointers (numbered 1,089 to 3,999)
 * 100 additional things (numbered 150 to 249)
 * 100 additional sprites (numbered 145 to 244)
 * 200 additional sounds (numbered 500 to 699)

Supported ports
The features exposed in DEHEXTRA have seen significant support among several source ports. These are:
 * Doom Retro
 * Crispy Doom
 * DelphiDoom
 * Eternity Engine
 * FPCDoom
 * GZDoom (full support since version 4.6.0)
 * LZDoom
 * PrBoom+ (UM: UMAPINFO branch by Graf Zahl)
 * ReBoom Experimental
 * Woof!

Additionally, the following programs also support DEHEXTRA:
 * The WhackEd editor provides support for DEHEXTRA features through the Doom Retro configuration parameter.
 * The DECOHack utility, part of the DoomTools package by Matt Tropiano (MTrop).

Examples
DEHEXTRA has been utilized in the following mods:
 * Black Ops : Smooth animated weapons using the new additional states for improved animation, with Doom guy wearing black gloves.
 * SMOOTHED : Smooth animated beastiary utilizing code from the Smooth Doom project.
 * Experimental Mixed Bag Salad : Includes a new arsenal and monsters through the use of.
 * Pact of the Damned : New monsters.

Trivia

 * The idea of providing DeHackEd users hundreds of dummy frames and codepointers to be used is not new: The Fusion port, released in 2002, exposed similar features, but never gained any widespread popularity.
 * Unlike DECORATE or ZScript, DEHEXTRA is not to be considered a lump, as it should be thought of as more of an extension to DeHackEd.