HHeretic

About

Heretic is a 1994 first-person shooter developed by Raven Software and published by id Software, distributed by GT Interactive for DOS. HHeretic is a source port of Heretic maintained by the Hammer of Thyrion (Hexen II) team, continuing Dan Olson's original Hacked Heretic to keep it running on modern *nix systems. It requires the player's own original Heretic WAD file, offers both OpenGL and software rendering builds, and adds features like OpenGL-only custom screen resolutions, SDL/SDL_mixer audio with optional custom or MIDI music playback, and a transparent automap.

Getting started

To play, place a Heretic WAD file (shareware or full retail) in the same directory as the compiled binary and run it; a help flag lists available command-line switches, and custom OGG/MP3/MIDI music can be added by placing files in a dedicated music folder when built with the SDL_mixer audio driver.

Known issues & limitations

• rendering: Clipping issues on some maps with OpenGL; some tall rooms can be seen through skies.
• compatibility: Saved game files are not interoperable between 32 and 64 bit machines or between big endian and little endian machines.
• There is a known OpenGL clipping bug where tall rooms in some maps can be seen through the sky, and saved games are not compatible across 32-bit/64-bit or differing byte-order systems.