[PS1]Macross: Do You Remember Love? Compressed files

[morrigan]

Hi everyone,

I've recently been trying to translate the PS1 game Chou Jikuu Yousai Macross - Ai Oboete Imasu ka (Macross: Do You Remember Love?), but I've found that the game's resource files are all in a compressed format with the extension GKO. I'm not very skilled at handling compressed formats, especially these older ones.

The GKO files all start by recording the original filenames before compression, and a single GKO file might contain more than one compressed file. Beyond that, I'm lost. I'm hoping to get help from experts familiar with compression on how to decompress these files. Of course, it would be even better if you could also tell me how to recompress them. I've prepared a few example files and attached them.

 

files.zip

Edited March 17 by morrigan

[Rabatini]

On 3/17/2025 at 11:10 AM, morrigan said:

Hi everyone,

I've recently been trying to translate the PS1 game Chou Jikuu Yousai Macross - Ai Oboete Imasu ka (Macross: Do You Remember Love?), but I've found that the game's resource files are all in a compressed format with the extension GKO. I'm not very skilled at handling compressed formats, especially these older ones.

The GKO files all start by recording the original filenames before compression, and a single GKO file might contain more than one compressed file. Beyond that, I'm lost. I'm hoping to get help from experts familiar with compression on how to decompress these files. Of course, it would be even better if you could also tell me how to recompress them. I've prepared a few example files and attached them.

 

files.zip 792.1 kB · 2 downloads

.GKO file is a container.

you have analise the files inside it.

 

get entries long

FOR RIP = 1 to ENTRIES
getdstring name 0x10
get offset long
get size long

log name offset size

next rip

 

[morrigan]

On 3/30/2025 at 10:53 PM, Rabatini said:

.GKO file is a container.

you have analise the files inside it.

 

get entries long

FOR RIP = 1 to ENTRIES
getdstring name 0x10
get offset long
get size long

log name offset size

next rip

 

Thanks for your help! The BMS script worked perfectly. But, the unpacked files are in an image format I've never seen before, so it looks like I'll be busy.😂