Entergram's LZSS variation ("LZLR" magic)

[TheUkrainianBard]

Games used in:

• KonoSuba: Cursed Relic and the Perplexed Adventurers / この素晴らしい世界に祝福を！～呪いの遺物と惑いし冒険者たち～
• Umineko: Golden Fantasia / Ougon Musou Kyoku / 黄金夢想曲

Looks like a LZSS variant with separated flags/data.
Something like this:

Code: Select all

0x00: LZLR - magic
0x04: uint32 - uncompressed filesize
0x08: uint32 - dataStart
0x0C-dataStart: flags/codewords
dataStart-EOF: literals

Found some very old tool for Umineko but without the available source - the repo was deleted some time in/after 2018. After some scouring, I have found the binaries.

As I am extremely unskilled when it comes to debugging and disassembly - I ask You for Your help (explanation of flags/literals/codeword in this implementation), to port for using in a Noesis script for KonoSuba graphic files.
Samples (compressed and decompressed) from the recent KonoSuba dungeon crawler/VN.

[masagrator]

I'm not sure if this will help, but you can check this repo

https://github.com/DCNick3/ShinDataUtil/tree/konosuba

[TheUkrainianBard]

Thanks for the link to the repo.

I've tried implementing it, but to avail as of yet.