ROM Hack Question How to unpack and repack *pak files which dragon quest 11 demo has ?

[A3660537JPN]

Somebody please help me how to unpack file .pak . It's content of DQ11 demo.
***I tried https://gbatemp.net/threads/how-to-unpack-and-repack-pak-file.515980/ but it did not work for this game.

 

[masagrator]

For now every tool dedicated to UE4 paks fails with this game.
https://zenhax.com/viewtopic.php?f=9&t=12413

 

[Falo]

The Game uses Unreal Engine 4.18.3 "SDK MW+EpicGames+UnrealEngine-4_18_3", pak is Version 4.

The compression method in this game is 0x3 -> Oodle, but since it's version 4, UnrealPak.exe detects it as Zlib (because "(0x3 & 0x1) == 0x1").
The used Oodle compression is a little bit tricky, they reversed the compression tables and switched the big endian values to little endian.

Oodle is closed source (RAD Game Tools) and so it's up to the magic from aluigi (quickbms) to implement this custom algo.

 

[Pokeytax]

Bumping this thread with the game release. Seems to be using similar Oodle compression to the demo. QuickBMS will need a different library for Oodle to unpack the contents.

 

[Pokeytax]

The Game uses Unreal Engine 4.18.3 "SDK MW+EpicGames+UnrealEngine-4_18_3", pak is Version 4.

The compression method in this game is 0x3 -> Oodle, but since it's version 4, UnrealPak.exe detects it as Zlib (because "(0x3 & 0x1) == 0x1").
The used Oodle compression is a little bit tricky, they reversed the compression tables and switched the big endian values to little endian.

Oodle is closed source (RAD Game Tools) and so it's up to the magic from aluigi (quickbms) to implement this custom algo.

Thanks for the help, I'm looking at this and willing to do some work but can't figure it out. Are you sure it's Oodle? I know compression method is 0x3, yeah, but there's no Oodle header, and it looks bytewise which seems odd. A custom Oodle LZNIB/Selkie? I tried all the existing QuickBMS compression with no luck, it's definitely little-endian like you said.

 

[Pokeytax]

If anyone would like to mod the full game, the QuickBMS script is here: https://zenhax.com/viewtopic.php?p=51295#p51295
Compression turned out to be Lizard/LZ5v2 although as stated it identifies as Oodle.

 

[cucholix]

If anyone would like to mod the full game, the QuickBMS script is here: https://zenhax.com/viewtopic.php?p=51295#p51295
Compression turned out to be Lizard/LZ5v2 although as stated it identifies as Oodle.

It works to repack too?
If so, would you explain the process to re-generate the modified .pak file?

 

[masagrator]

It works to repack too?
If so, would you explain the process to re-generate the modified .pak file?

Game should open standard paks. Just use my tutorial to make patch file.

 

[cucholix]

Game should open standard paks. Just use my tutorial to make patch file.

Thanks.
It seems there's an official patch in place "pakchunk0-Switch_0_P.pak", should I name the patch like that?

 

[masagrator]

You can use this name

pakchunk0-Switch_1_P.pak

 

[Nevermore]

I can't get the extract to work... and I just realized as I was typing up this post, is my issue because the pak file is split up from when I dumped the Romfs?

Welp, redumping just the file, hopefully it stays intact.

EDIT: Yup, I'm a dum-dum, I just joined the two files, then ran the quick BMS and it worked flawlessly. Thank you.

Now I wonder how we can extract the texture files. JackGame\Content\UIs_common\Texture\Map has all the ingame maps.

Before I could use this UE Viewer set to Unreal 4.14 to open, but it doesn't work here :/
http://www.gildor.org/en/projects/umodel#files

 

[Nevermore]

I made a post over on UE Viewer's forum, detailing all the findings about the game for the extract to work, and I hope it can help with the viewer.

https://www.gildor.org/smf/index.php/topic,6325.msg34102.html#msg34102

 

[Pokeytax]

The Lizard/LZ5 compression should be out of the picture now, that was the compression format of the pak and now the files are decompressed. I think unfortunately it’s a UE Viewer issue (which I know little about). DQXI S probably runs on Unreal 4.15 or higher (one of the reasons for the game taking so long was updating from Unreal 4.13).

The original version of my bms script output some uncompressed files at 0 bytes, so that could also cause an issue.

 

[Nevermore]

Word. I got it to extract with the script you attached in this message. So I'm sure it's right. https://zenhax.com/viewtopic.php?p=51295#p51295

Nobody on that forum has downloaded the files I provided to see why it won't work in UE Viewer, even though the Admin moved my thread into the existing PS4 one. :<