Tekken 8 practice-mode tool. Save, share, and reload practice mode recordings recordings as portable drill files.

A drill is a byte-perfect copy of Tekken's in-engine practice recording. Once loaded, the game plays it back exactly as if you'd just finished recording it yourself.

I just wanted a way to download and load defense drills without needing to re-record them each time I loaded the game.

Demo: https://www.youtube.com/watch?v=hpciOVFaxrw

Community drill sharing website: https://opendojo.vercel.app/

• Export any combination of your 8 practice-mode recording slots to a shareable .drill.txt text file
• Import drills back into your slots ("Add to empty slots" or "Replace all")
• NEW! OpenDojo Cloud (in-game): browse drills uploaded by other players, filter to your CPU character, one-click download. Upload your own drills in one click from the Export tab — no signup needed
• Autosave per character: opt in and your last recording is snapshotted per CPU character and restored when you load against that character again
• In-game overlay menu with keyboard + controller navigation
• Filter the drill list to the CPU character you're currently practicing against
• Customizable open/close binds (default: F12 on keyboard, Back + Y on controller)

OpenDojo ships as a single DLL that masquerades as dinput8.dll — Tekken auto-loads it on launch.

1. Grab dinput8.dll from the latest release: https://github.com/sirmammingtonham/opendojo/releases/latest/download/dinput8.dll

2. Drop it into Tekken's Win64 folder, next to Polaris-Win64-Shipping.exe:

   <SteamLibrary>\steamapps\common\TEKKEN 8\Polaris\Binaries\Win64\dinput8.dll
   

   1. 
   2. 
   3. 

3. Launch the game normally. That's it.

To uninstall, delete dinput8.dll.

OpenDojo creates an opendojo/ folder in the same directory the first time you save a drill. Your drills, autosaves, and config live there.

1. Launch Tekken 8 and start a practice match.
2. Press F12 (or Back + Y on controller) to open the menu.

• Drills — list of .drill files in opendojo/. Each row has an Add button (load into empty recording slots; refuses if too few are free) and Replace (clear all slots, then load the drill). Filter defaults to the live CPU character; toggle "Show all" to see everything.
• Browse — search OpenDojo Cloud for drills other players have uploaded. Filter to your current CPU character, sort by newest or most-downloaded, click Download to save into your local opendojo/ folder. Downloads land alongside your own drills and show up in the Drills tab on the next refresh.
• Export — save the currently-occupied slots as a new drill file (local) and/or upload them to OpenDojo Cloud (community). Name and description are optional; CPU character and side are autodetected from the live match.
• Settings — autosave toggle and key/controller rebinding.
• About — version + current binds.

Drills are plain text — readable and editable. Example:

# OpenDojo drill
name:         jin_string_defense
description:  block string mixups
character:    jin
cpu_side:     p2
recordings:   3

--- recording 1
name:         slot 1
events:       12
total_frames: 180
#
  n    .       30
  f    1+2      8
  ...

Edit the event lines (<dir> <buttons> <frames>) by hand if you want; meta=NNNN annotations are recorder state and should not be edited.

Requires CMake 3.20+ and MSVC (Visual Studio 2019 or 2022 with the C++ workload). The project fetches Dear ImGui and MinHook automatically.

cmake -B dll/build -S dll -A x64
cmake --build dll/build --config Release

The build produces dll/build/Release/dinput8.dll and (if the path exists) copies it into the Tekken folder for one-step iteration. Override the deploy path:

cmake -B dll/build -S dll -A x64 -DOPENDOJO_DEPLOY_DIR="D:/Games/TEKKEN 8/Polaris/Binaries/Win64"

If clang-format is on the path or in a known VS install, it runs automatically before each build to keep the source tree formatted.

The in-game Browse and Upload tabs (OpenDojo Cloud) are enabled in the official release builds. A DLL you build yourself is compiled without cloud access — those tabs show a "cloud not configured" message and everything else works normally.

• Tekken 8 v3.01.01. Other versions may shift the memory offsets the mod uses — they'd need re-resolving.
• Windows 10/11, x64.
• Should coexist with other dinput8.dll-style proxy mods only if you stack them via an injector — both can't live at the same filename.

• Menu doesn't open — check opendojo.log next to the DLL. The mod logs its hook progress on every launch.
• "Not ready" in the menu — you haven't recorded into a slot yet this session. Record once and the message disappears.
• Imported drill doesn't show in the practice menu — close and reopen the practice pause menu once. The data and playback are correct immediately, but the menu sometimes caches its display.

ts hella vibe coded lol, all the RE was done by claude with ghidra and cheatengine mcps.

Spent like 2 days trying to set up an in-game menu and got maybe 50% of the way there, but it's a ton of work so I'm giving up on that for now... I had claude write all findings to /docs in case there's any useful info for future modders.

Please feel free to submit a pull request with features and fixes!