Part of #41: the comments of `benilla-formats` (the library, its extract tools, examples and tests) are rewritten to the rule in `docs/METHOD.md`, which is what the code does and the reference fact behind it, in a line. 19,654 comment lines become 7,264. Fixes #105: the WMO collision comments now name walking's box-query leaf `0x6bca50` and the camera and line-of-sight segment-query leaf `0x6bc700`, in `models/collision.rs`, `examples/wmo_bsp.rs` and `tests/chain.rs`. - **The mechanical strip.** The citations that were only a private record number go first, and each edit is shown to be a pure removal. - **Wrong facts corrected.** The rewrite corrects the comments that stated wrong facts. Among them: - A placed doodad's material alpha reads file slot 0 on its spawn clock, while the reference reads bone 0's armed sequence, re-rolled every play window. The old text said doodads are armed once at load. - The fog end is stored ×36 and scaled once at load (`0x6d6090`). It is not raw. - The MCSH bit picks a map doodad's sun scale, 1.0 lit or 0.5 shadowed. 2.5 belongs to an entity's light node. - `SpellRec` is the row as stored, column × 4, not a translated copy. - A global sequence's clock is anchored at the instance's attach time (`0x714352`). - Particle twinkle is a gated size multiplier (`0x7b2adc`). - The blob shadow sizes from the Stand box. - Data claims are checked against the install: the weapon-trail kits' parameters and alphas, the beam rows' noise, and the maps' `field_16`. - Dozens more turned up on the way: renamed or deleted items, docs sitting on the wrong item, stale counts and links. - **Deviation labels.** "Deviation:" now marks only a choice with a reason. An unbuilt behaviour says so plainly. - **Verification.** Every file strips to identical code, and `cargo fmt --check` is clean. Four second readers compared every file old against new, restored the facts the rewrite had dropped, and checked each new citation against the reference, the code and the shipped data. String literals are untouched; they are #92. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
benilla speaks the original 1.12.1 protocol, so it connects to any server the real client could, and reads its game data at runtime from your own 1.12.1 install. Every file format and the network protocol are implemented from scratch, with no original client code, no third-party WoW crates, and no bundled game assets.
What works
- Formats: readers for the full asset stack (MPQ patch chain, BLP, DBC, ADT/WDT/WDL, M2, WMO), wired into Bevy as an asset source.
- World: streamed terrain out to the horizon, portal-culled WMOs with interior lighting, doodads and ground clutter, swimmable liquids, sky and weather, and the client's own day/night lighting, fog and gamma passes.
- Models: GPU-skinned M2s with the full animation controller, a near feature-complete particle system, ribbons, and animated gameobjects from doors to lifts.
- Characters: customization end to end, the armor texture composite, weapons with sheathing and enchant glows, shapeshift forms, stealth and mounts.
- Movement: a WoW-feel controller, networked movement in both directions, the server-granted modes from slow fall to roots, a follow camera with collision, boats, zeppelins and taxi flights.
- Networking: SRP6 auth through world-session crypto, the object mirror into the ECS, and live wire coverage from movement and chat through spells, party, quests, mail, trade, vendors, bank, loot, the auction house, PvP honor and battlegrounds.
- UI: a from-scratch FrameXML + Lua engine that runs the client's own stock interface off
your install's patch chain, from the login and character screens through the full HUD, the
classic windows (guild, macros and key bindings included), chat, nameplates, floating combat
text and tooltips; third-party addons load from a
benilla-config/AddOns/folder beside the executable (partial: AtlasLoot and Bagnon run). - Combat: melee on the faithful swing law, ranged and Auto Shot, casting with GCD and cooldowns, combo points, crowd control that really holds you, and the spell visual pipeline.
- Audio: music, ambience and SFX under the client's own selection and crossfade rules, with interior and underwater transitions and zone reverb.
Where it's going
benilla is done when a 1.12.1 player can do everything here that they could in the original client, it looks and feels the same, and it runs from a download on Windows, Linux and macOS. No dates; the order is what is likely, not a promise.
- The long tail of small features that separates a working client from a finished one.
- Addons, options and performance, ongoing.
- Playable downloads for Windows, Linux and macOS. Linux first.
Not planned: other expansions or client versions, Warden (anticheat).
Running it
You need a 1.12.1 (build 5875) client install for game data, a vanilla server to connect to, stable Rust and a C compiler (the Lua is built from source; on macOS the Xcode command line tools, on Linux the ALSA and udev development packages). Any 1.12.1 core works; vmangos is what development runs against, and cMaNGOS and the rest speak the same protocol.
WOW_DATA=/path/to/WoW/Data cargo run --release -p benilla
The server defaults to localhost:3724, the stock realmd auth port. Point WOW_HOST
at any IP or hostname, appending the auth port if yours is remapped
(WOW_HOST=play.example.com:5000). Credentials go in at the login screen, or set WOW_USER /
WOW_PASS to skip it.
Contributing
Issues and pull requests are open. docs/CONTRIBUTING.md says what gets
in and how a change is judged. Bugs, questions and ideas are welcome on the
Discord too.
Early inspiration and file format guidance came from the wowemulation-dev community, and warcraft-rs in particular.
benilla is an independent fan project, not affiliated with or endorsed by Blizzard Entertainment.
It ships no Blizzard content — no art, models, sounds, maps, MPQ contents or FrameXML; you
provide your own legally obtained 1.12.1 client. The stock interface runs off your own install's
FrameXML at runtime; the handful of files under crates/benilla-app/assets/ui/ are our own
adapters and developer frames, not copies of it.
World of Warcraft is a trademark of Blizzard Entertainment, Inc. Our own code is licensed under
MIT or Apache 2.0, at your option. The two vendored components
under third_party/ — the kira audio engine, and a Lua 5.1 patched to the 1.12 client's dialect —
keep their own upstream licenses, alongside each.