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Preservation + Godot remaster of Havoc (Reality Bytes, 1995): .FF asset extraction, format docs, and reverse-engineering toolkit.
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pyr0ball a77db1edcb fix: derive debug-agent client timeout from continue_execution's requested wait 
DebugAgentClient.call() hardcoded a 60s socket timeout that also bounded
recv(), so any continue_execution call asking for a longer wait (e.g.
waiting for a user to alt-tab) would time out on the client side while
the debug agent was still legitimately waiting. call() now accepts an
optional socket_timeout override, and the continue_execution tool passes
timeout + 30 so the client socket outlives the agent's own timeout + 10s
of headroom.

Also adds a round-trip test for encode_message/decode_message (the wire
contract between the two independently-built sides of this protocol),
and corrects the WatchpointSlots docstring, which overstated what
Wow64SetThreadContext does -- the agent actually arms the hardware
watchpoints via a native x64 SetThreadContext call, with the Wow64
variant used only for 32-bit register readback.

Claude-Session: https://claude.ai/code/session_01E4YCRPfAE3328FcYPyKu9T
2026-07-04 14:38:54 -07:00
docs docs: record live runtime confirmation of alt-tab state transition (2026-07-04) 2026-07-04 14:23:48 -07:00
tests fix: derive debug-agent client timeout from continue_execution's requested wait 2026-07-04 14:38:54 -07:00
tools fix: derive debug-agent client timeout from continue_execution's requested wait 2026-07-04 14:38:54 -07:00
.gitignore chore: untrack debug screenshot artifact, ignore future MCP client config 2026-07-04 14:27:12 -07:00
README.md feat: crack GRAFIX0N.DAT texture format + extractor 2026-07-03 09:36:41 -07:00
requirements.txt feat: wire MCP tool definitions and bearer-token auth into server 2026-07-04 07:13:36 -07:00
run_and_log.bat feat: NOCD patch boots Havoc on modern Windows (defeats CD copy protection) 2026-07-03 09:29:59 -07:00
run_probe.bat feat: NOCD patch boots Havoc on modern Windows (defeats CD copy protection) 2026-07-03 09:29:59 -07:00

README.md

Havoc — Preservation & Godot Remaster

Reverse-engineering, asset-extraction, and Godot remaster of Havoc (Reality Bytes, Inc., 1995) — a first-person vehicular-combat shooter for Windows 95/98.

Havoc renders a software-rasterized 3D world (textured terrain, low-poly enemy/pickup models, drivable and flyable vehicles, dithered 8-bit color) into a DirectDraw framebuffer, framed by an elaborate 2D cockpit HUD (mirrors, radar, gauges, weapon icons). Biomes include desert, snow/ice, lava, and ocean.

The original 32-bit executable (DirectDraw + DirectSound, no Direct3D — the 3D is all software) no longer runs reliably on modern Windows (legacy DirectDraw + a 16-bit installer/DirectX setup path). Rather than only emulate it, this project extracts the original data into open formats and rebuilds the game in Godot as a quality-of-life remaster.

Legal: Havoc is 30-year-old abandonware. This repository contains only original reverse-engineering code and documentation. It does not redistribute the game's executables, DLLs, or data files (see .gitignore). You must supply your own copy of the game data to run the tools.

Status

  • Identified binaries: HAVOC.EXE/LAUNCHER.EXE/SETUP.EXE are 32-bit PE (i386), DirectDraw + DirectSound, not 16-bit/DOS.
  • Cracked the .FF ("FlashFile") archive format — see docs/FORMATS.md.
  • Extracted MUSIC.FF: 97 WAV segments + 17 playlist-sequenced songs (verified correct).
  • FL Studio pack: per-song MIDI + sample mapping (tools/ff_extract.py --fl).
  • ogg/mp3 conversion (--convert, needs ffmpeg).
  • Boot HAVOC.EXE on Windows 11 (dgVoodoo2) — NOCD + copy-protection fix, see docs/PATCHES.md.
  • [~] Crack graphics formats: GRAFIX*.DAT done (docs/FORMATS.md); LAND*.DAT, MAP*.MAP, STUF*.DAT next.
  • Decompile HAVOC.EXE (Ghidra) to recover game logic.
  • Godot remaster project (widescreen, higher-res, rebindable input).

Tools

tools/ff_extract.py — extract any .FF archive.

python tools/ff_extract.py MUSIC.FF -o out_music --songs          # raw entries + assembled songs
python tools/ff_extract.py MUSIC.FF -o out_music --songs --convert ogg
python tools/ff_extract.py MUSIC.FF -o Havoc_MUSIC_FLStudio --fl  # FL Studio samples + MIDI

Layout

tools/        reverse-engineering & extraction scripts (tracked)
docs/         format documentation (tracked)
godot/        Godot remaster project (tracked, WIP)
<game files>  original data — supplied by you, gitignored