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A set of tools for working with scripts used in various game developed by Atlus.

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Atlus Script Tools Build status

Set of tools developed for handling Atlus' script formats including

  • flow script files (.bf)
  • message script files (.bmd, .bm2)

All of the code is written in C# and licensed under the GNU GPL.

Latest build:

Supported games

  • Catherine
  • Catherine: Full Body
  • Devil Summoner: Raidou Kuzunoha vs. the Soulless Army
  • Devil Summoner 2: Raidou Kuzunoha vs. King Abaddon
  • Persona 3
  • Persona 3 FES
  • Persona 3 Portable
  • Persona 3 Reload
  • Persona 4
  • Persona 4 Golden
  • Persona 5
  • Persona 5 Royal
  • Persona Q
  • Persona Q2: New Cinema Labyrinth
  • Shin Megami Tensei 3: Nocturne
  • Shin Megami Tensei 3: Nocturne HD
  • Shin Megami Tensei: Digital Devil Saga 1
  • Shin Megami Tensei: Digital Devil Saga 2
  • Trauma Center Second Opinion
  • Trauma Center New Blood
  • Etrian Odyssey II: Heroes of Lagaard
  • Other games might be supported out-of-the-box for editing of message script files

Example usage

Decompiling a script from Persona 5 Royal: AtlusScriptCompiler -Decompile -In "path/to/script.bf" -Library P5R -Encoding P5

Compiling a script for SMT3: AtlusScriptCompiler -Compile -In "path/to/script.flow" -Library SMT3 -OutFormat V1

See AtlusScriptCompiler -Help for more info.

Overview of repository structure

Source

  • This is the source code directory of the project. This is where the main solution and its projects are.

AtlusScriptLibrary

  • This is the main class library of the project. All of the core functionality will be implemented here, with the other programs serving as a front-end.

AtlusScriptCompiler

  • The commandline frontend for the script compiler. This application is used for
    • Compiling & decompiling flow scripts from/to the uncompiled format (.flow) or from/to compiled format (.bf)
    • Compiling & decompiling flow bytecode code from/to the uncompiled format (.asm) or from/to the compiled format (.bf)
    • Compiling & decompiling message scripts from/to the uncompiled format (.msg) or from/to the compiled format (.bmd)
    • Compiling & decompiling message bytecode from/to the uncompiled format (.asm) or from/to the compiled format (.bmd)

AtlusScriptEvaluator

  • This application is used for
    • Evaluating compiled or uncompiled flow scripts (.bf & .flow) and providing statistics
    • Evaluating compiled or uncompiled message scripts (.bf & .flow) and providing statistics

Utilities

  • This is where misc utility programs using the library will be stored. Also serves as a reference for anyone wanting to use the library.

AtlusMessageScriptExtractor

  • This application is can batch extract the text from message scripts from within various binary files. Use this is if you want a quick dump of the text from a game.

AtlusFlowScriptExtractor

  • Similar to the previous program, it can batch extract scripts from within various binary files. Use this is if you want a quick reference of all the scripts used in a game.

AtlusFlowScriptInterpreter

  • WIP interpreter for flow scripts. Not suitable for use yet.

packages

  • Nuget packages.

Documents

  • This directory contains all kinds of documents to serve as documentation for the file formats, and other things such as reversed engineered game code.

Scripts

  • This is where any misc. scripts will be stored, for the sake of keeping everything safe from being lost. ¯_(ツ)_/¯

Build

  • Not visible on the repo but this is where all of the binaries will compile to.

What's finished?

Finished

  • Reading and writing of flow & message script files.
  • Simplified representation of both flow & message script files.

Somewhere inbetween

  • Decompilation and compilation of message scripts. They're both missing an implementation of function aliases, but besides that they work.
  • Compilation of flow scripts. The compiler is currently able to compile some decently complex scripts, but some things still need to be worked on.

Unfinished

  • AtlusScriptEvaluator
    • Evaluating compiled or uncompiled flow scripts (.bf & .flow) and providing statistics such as syntax errors or stack over or underflows.
    • Evaluating compiled or uncompiled message scripts (.bmd & .msg) and providing statistics. Not sure what kind of statistics would really work here though.