This topic was archived here:

https://web.archive.org/web/20230000000000fw_/https://www.zenhax.com/viewtopic.php?t=3127

RetroHelix, posted Thu Sep 15, 2016 4:42 pm (17468)

---

Hello everyone,

I read that the translation team for NEW LOVE PLUS has problems with reinserting files back into one big archive file. I got curious because I knew there was an unpacker with source for the archive file (img.bin (~600mb)). I thought it can't be this hard to write a reinserter with the sourcecode of the unpacker but it looks like the unpacker "only" searches for PACK files in the archive and extracts them. So I have no information about how the files are accessed by the game.
It looks like there is some kind of header and a table in the img.bin but I could not make much sense out of it. Byteorder is littleendian.

Offsets:
0x800 = start of a table
0x10 uint32 = number of entries in the table
0x14 uint32 0x800 = offset to the end of the table (or start off a second file)
0x24 uint32 0x800 = offset to the end of the second table (or start off a third file)
The first real file (a PACK file) seems to start at 0x28000

Can someone please take a look at the (img.bin) and explain its structure if possible?

aluigi, posted Sun Sep 18, 2016 7:44 pm (17504)

---

The truth is that there is no offset for the files and so scanning the "PACK" magic is the only way to get everything.
Luckily the other non-PACK files are just a few so who cares.
Script:
http://aluigi.org/bms/new_love_plus.bms

RetroHelix, posted Tue Sep 20, 2016 3:49 pm (17538)

---

aluigi wrote:

The truth is that there is no offset for the files and so scanning the "PACK" magic is the only way to get everything.
Luckily the other non-PACK files are just a few so who cares.
Script:
http://aluigi.org/bms/new_love_plus.bms

Thank you.
So there is no reference to where the PACK-files are located in the img.bin. Do I got this right?

aluigi, posted Tue Sep 20, 2016 6:06 pm (17546)

---

Right, the only 32bit field available (I called it "SIZE" at line 32) was strange, because it was the real size for one of the non-pack files but didn't match the pack sizes.

RetroHelix, posted Mon Sep 26, 2016 8:42 pm (17676)

---

I wonder how the game indexes the files then. Since I could not find any other file that looks like a filetable, I guess it must be in the code itself. I could not find anything tough...