DEHEXTRA

The DEHEXTRA standard, also known as DeHackEd Extended or DeHackEd Extra, is a extension standard for DeHackEd patches first introduced in the Doom Retro source port. 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. The additional objects are called in Doom Retro.

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)

The following additional entries are supported in blocks:

Additionally, the following blocks are Doom Retro-specific:

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

Additionally, the WhackEd editor provides support for DEHEXTRA features through the Doom Retro configuration parameter.

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.

Both mods can be used together to provide a more streamlined Doom experience in terms of animation.

Trivia

 * The idea of providing DeHackEd users hundreds of dummy frames and codepointers to be used is not new: The Fusion port, finished 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.