- the bag windows are the reference's own `ContainerFrame.xml` running off the player's patch chain — decision 1751 makes the stock 1.12 UI off the install the end state and `assets/ui` scaffolding that retires file-by-file (86 files against the 99-file stock corpus, 72% of the 1128-function global surface already built) — via one ordered manifest, `benilla.toc`, where a bare name is a file we ship and an `Interface\FrameXML\` path is the player's own file; the windows on screen are `ContainerFrame1..12`, the bank's six copy-pasted popouts fold into them at ids 5..10, net −750 lines, and the swap forced real engine verbs into being rather than stubs (`SetBagPortaitTexture` with its id-0 no-texture arm, `GameTooltip:AppendText`, `SetButtonPulse`, and a `<Model>` whose file is the cooldown indicator materializing as the native sweep, which three corpus addons inherit) - the 1.12 walk toggle lands: `TOGGLERUN` latches one bit with `ToggleRun`'s own silent refusal chain (dead, rooted, on a live server spline), and the walk animation was never missing at all — the flag reaches it through exactly one channel, the speed (`0x5fd100` picks Walk over Run on `speed > 2 × walkSpeed`); pinning it caught our remote extrapolator with the two min rungs backwards — `min(walk, run)` runs BEFORE the backward min, so a walking backpedaller moves at 2.5 yd/s where we would have played them the Run clip at 4.5 — and one shared `current_speed` now keeps the local controller and the extrapolator from ever disagreeing about it - the instance and raid lockout messages exist — six packets that were dropped as unknown opcodes now land, four of them as the CHAT_MSG_SYSTEM lines the client composes itself, which is why no Lua handler ever surfaced them — plus `IsInInstance`, `ResetInstances`, and the unit popup's "Reset all instances" row behind the reference's own predicate; where the binary contradicts vmangos: the ownership flag means "any instance bind" but vmangos only ever names raid binds, so the row was dead for every character without a raid lockout — term 1 is now also satisfied by our own eyes, walking out of a party dungeon the server itself bound us to - opening the world map showed 3D world at the sheet's margins: `BlackoutWorld` was parented to the very `UIParent` a fullscreen panel hides, and three more frames had crossed the same boundary — the shared dropdown lists (so the map's continent and zone pickers answered a click with nothing at all), the master-looter menu, and the screenshot confirmation, which could never appear during a cinematic; `frame_flag_gate` now checks the parent seat against the reference both ways a frame acquires one (the attribute, template-inherited included, and `<Frames>` nesting), and its first harvest took 30 divergences down to three accepted ones Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Important
Issues and pull requests are closed here. benilla is a solo project developed in a private tree; this repo is its export, published as squashed snapshots, so a PR here has nothing to land on. The best way to contribute is to join the Discord and report the bugs you find. Questions and ideas are welcome in the same place.
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 and PvP honor.
- UI: a from-scratch FrameXML + Lua engine driving the built-in interface, 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, see below). - 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.
- Battlegrounds and meeting stones, then the long tail of small features that separates a working client from a finished one.
- Addons, options and performance, ongoing.
- The no-brainer fixes from VanillaFixes, SuperWoW and the like.
- 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, and stable Rust. 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.
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 interface code under
crates/benilla-app/assets/ui/ is ours, written to the client's own layout and API names so that
the windows look right and 1.12.1 addons find the names they expect.
World of Warcraft is a trademark of Blizzard Entertainment, Inc. Our own code is licensed under MIT or Apache 2.0, at your option.