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lbee-utils

A small collection of utilities for exporting and importing assets from games made with LUCA System by Prototype Ltd.

Tested on the following games:

  • Little Busters! English Edition (2017)
  • LOOPERS (2023)
  • Harmonia Full HD Edition (2024)
  • Kanon (2024)

Acknowledgments

The implementation for decompression of CZ1, CZ3, and CZ4 was originally derived from GARbro. The implementation of compresssion and decompression of CZ1, CZ2, CZ3, and CZ4 was derived from LuckSystem. This project would not have been possible without their amazing work.

Features

These decoders and encoders are structured as libraries first and tools second. It's possible to use them as a base to build other applications.

CZ Images

Completely accurate CZ# file decoding and encoding. Read more about that here:

https://g2games.dev/blog/2024/06/28/the-cz-image-formats/

PAK Archives

Partial implementation of PAK files, enough to extract data from most I've encountered, and replace data as long as decoding is successful. Any extra metadata can't be changed as of yet, however.

Programs

lbee-utils

Small command line tools for modifying CZ images and PAK archives. Usage for each is as follows:

pakutil

Utility to maniuplate PAK archive files from the LUCA System game engine by Prototype Ltd

Usage: pakutil <PAK FILE> <COMMAND>

Commands:
  extract  Extracts the contents of a PAK file into a folder
  replace  Replace the entries in a PAK file
  help     Print this message or the help of the given subcommand(s)

Arguments:
  <PAK FILE>  

Options:
  -h, --help     Print help
  -V, --version  Print version

czutil

Utility to maniuplate CZ image files from the LUCA System game engine by Prototype Ltd

Usage: czutil <COMMAND>

Commands:
  decode   Converts a CZ file to a PNG
  replace  Replace a CZ file's image data
  help     Print this message or the help of the given subcommand(s)

Options:
  -h, --help     Print help
  -V, --version  Print version

PAK Explorer

This is a basic explorer application for PAK files which allows you to see their contents, replace the contents, extract files, and save them again.

While this is a useful tool for just viewing and extracting the contents of a PAK file, it is recommended to use the command line tools for doing anything important as they offer many more options and allow for batch operations on many files at once.

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