DeHackEd patch
DeHackEd is an editor created by Greg Lewis for the computer game Doom. It allows users to modify the game's behavior by directly editing the executable file. DeHackEd can modify the behavior of the in-game objects, change their properties and flags, edit text strings, and adjust a few other values.
Modifications implemented with DeHackEd can be distributed as plaintext "patch files", by default with the extension .deh. A DeHackEd patch file lists all the changes to the game logic in the form of human-readable key=value pairs.
Many Doom mods use .deh files to modify the game beyond what is possible with custom Doom WAD files. Originally, players had to run DeHackEd manually to apply the patch to their Doom executable. Modern Doom source ports can interpret DeHackEd patches directly via a command line option, without modifying the executable. Additionally, many ports can handle DeHackEd patches embedded directly within WAD files.
External links
- DeHackEd at the Doom Wiki
