DECOMPRESS SCRIPT Vrally 2 (dc/pc)

[domingo]

I need decompress this script for I can to edit the text.

SCRIPT.rar

I think already posted everything I need to translate into Spanish V-Rally 2 Dreamcast versión



Thanks

[aluigi]

Unfortunately doesn't exist a real solution because I don't know what's the algorithm.
The compression is similar to LBALZSS2 but it's not the same and so the decompressed data is wrong.
This is a test script to show you what I mean:

Code: Select all

comtype LBALZSS2
get SIZE long
savepos OFFSET
get ZSIZE asize
math ZSIZE - OFFSET
get NAME basename
string NAME + ".txt"
clog NAME OFFSET ZSIZE SIZE

[domingo]

Aluigi thank you very much, I think I can settle me, but I can not reimport.

I get the option to skip, cancel or force, I write force, the program says it has been re-imported, but open the hex file and still the same.
This is the problem?

It could Fixes for reimport?

You could look at my other post, if they have solution?

IPMS audio header and compress texture.

Thanks of new

[aluigi]

Reimporting what?!
The decompressed data is wrong and even if it was correct there is no recompression function for that algorithm.

[domingo]

I understand

I thought that the text could compress once edited

[aluigi]

That text is WRONG. It's NOT the real original text.

[domingo]

This the file original with all scripts,the file is zap.

SCRIPTS.rar

Only I caught one of they

[aluigi]

I'm back from additional tests made also with Little Big Adventure 2 and it's a problem of the decompression algorithm that has an additional instruction which is not used by the games. I have no idea where I got that additional part of code but if it's there it means it was in the code I reverse engineered.
Anyway now the decompression works at 100% on both LBA and Vrally2 but the code is not available in quickbms.

[aluigi]

Here we go, no need to wait quickbms 0.7.7:

Code: Select all

get SIZE long
savepos OFFSET
get ZSIZE asize
math ZSIZE - OFFSET
get NAME basename
string NAME + ".txt"
# this is the fixed LBALZSS* algorithm that will be fixed in quickbms 0.7.7
set MEMORY_FILE binary "\x55\x89\xe5\x57\x56\x53\x83\xec\x0c\x8b\x4d\x08\x8b\x45\x0c\x01\xc8\x89\x45\xf0\x8b\x45\x10\x03\x45\x14\x89\x45\xec\x8b\x45\x10\x3b\x45\xec\x73\x73\x3b\x4d\xf0\x73\x6e\x8d\x71\x01\x8a\x09\xc6\x45\xea\x08\x88\x4d\xeb\xf6\x45\xeb\x01\x74\x15\x3b\x75\xf0\x73\x57\x3b\x45\xec\x73\x52\x8a\x16\x8d\x4e\x01\x40\x88\x50\xff\xeb\x3b\x8d\x4e\x02\x3b\x4d\xf0\x77\x3f\x0f\xb6\x56\x01\x0f\xb6\x36\xc1\xe2\x08\x09\xf2\x31\xf6\x89\xd7\x0f\xb7\xd2\x83\xe7\x0f\x03\x7d\x18\xf7\xd2\xc1\xfa\x04\x01\xc2\x39\xfe\x7f\x0f\x3b\x45\xec\x73\x16\x8a\x1c\x32\x40\x46\x88\x58\xff\xeb\xed\xd0\x6d\xeb\xfe\x4d\xea\x74\x8c\x89\xce\xeb\x9e\x2b\x45\x10\x83\xc4\x0c\x5b\x5e\x5f\x5d\xc3"
comtype calldll "MEMORY_FILE 0 cdecl RET #INPUT# #INPUT_SIZE# #OUTPUT# #OUTPUT_SIZE# 2"
clog NAME OFFSET ZSIZE SIZE

[domingo]

Perfect, now everything is in order

[domingo]

Aluigi, there is some form to return to compress the file zap, once have the scripts edited?

I tried re-importing but not supported

Perhaps in the next versión quickbms?Or other method?

[aluigi]

To disable the compression it's enough to set the decompressed size field (the first 32bit value) like the compressed size.
But there is no way to do everything automatic, you need a rebuilder.

[domingo]

Hello Aluigi, I have edited one of the Zap files, but can not find anyone to create a rebuilder.

You could create a rebuilder?


Regards

[aluigi]

no

[domingo]

Okay thanks anyway