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Preservation + Godot remaster of Havoc (Reality Bytes, 1995): .FF asset extraction, format docs, and reverse-engineering toolkit.
19 commits 1 branch 0 tags 462 KiB
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pyr0ball 12ec33b41a feat: add hardware watchpoints (DR0-DR3/DR7) and re-armable breakpoints to debug agent 
Implements set_watchpoint/remove_watchpoint/list_watchpoints via Wow64SetThreadContext
on DR0-DR3/DR7. Skips 64-bit WOW64 helper threads (Wow64GetThreadContext returns
ERROR_ACCESS_DENIED on those -- found against the real process). Propagates active
watchpoints to new threads as they spawn. Re-armable breakpoints: on breakpoint hit,
restores original byte and sets EFlags trap flag; the resulting single-step re-plants
the 0xCC, making breakpoints persistent across multiple hits. EXCEPTION_SINGLE_STEP
handler distinguishes watchpoint trips (Dr6 bits 0-3 set) from re-arm single-steps
(Dr6 clear). Smoke test confirmed: re-armed breakpoint fires on second continue;
watchpoint on 0x0047C48C set on slot 0 -- full watchpoint trip validation requires
gameplay state==0x47 (deferred to Task 6 end-to-end run).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TN4Ytn3gdWRonNmHpisWQv
2026-07-04 09:26:37 -07:00
docs docs: add briefing for the Caspian-side agent implementing Tasks 2-4/6 2026-07-04 06:01:55 -07:00
tests fix: close timing-attack and empty-secret auth bypass in MCP server 2026-07-04 07:22:55 -07:00
tools feat: add hardware watchpoints (DR0-DR3/DR7) and re-armable breakpoints to debug agent 2026-07-04 09:26:37 -07:00
.gitignore feat: set up Linux Ghidra pipeline, find and patch FPS-coupling and pause-hang bugs 2026-07-03 22:32:28 -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