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frogz2007, posted Sun Dec 14, 2014 4:02 pm (2168)

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I am wondering if anyone can make me both an .ARC extractor and re-builder? I am trying to mod the game. It would be very much appreciated if somebody could do this. If possible, keep the original format intact. Here is the models.arc file:

http://www.mediafire.com/download/p748w ... els_arc.7z

Mygoshi, posted Sun Dec 14, 2014 4:04 pm (2169)

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This is the same .arc type than Over The Hedge. You should contact Knurek on HCS64.com

frogz2007, posted Sun Dec 14, 2014 6:38 pm (2170)

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Mygoshi wrote:

This is the same .arc type than Over The Hedge. You should contact Knurek on HCS64.com

Hmm. Does he have something that can read them, though?

aluigi, posted Wed Dec 17, 2014 9:38 pm (2192)

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I wrote a script for Over the Hedge some months ago, just in case you want to try and may be useful:
http://aluigi.org/papers/bms/others/over_the_hedge.bms

frogz2007, posted Thu Dec 18, 2014 5:22 am (2205)

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aluigi wrote:

I wrote a script for Over the Hedge some months ago, just in case you want to try and may be useful:
http://aluigi.org/papers/bms/others/over_the_hedge.bms

I just tried, and the format must be a little different. It says:

Error: invalid command "xmath" or arguments -1 at line 21

aluigi, posted Thu Dec 18, 2014 9:06 am (2210)

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Use the latest quickbms.

frogz2007, posted Thu Dec 18, 2014 10:46 am (2214)

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Still didn't work. Now it says, "Incomplete file of C:Users\User\Desktop\models.arc
Can't read 4 bytes from offset 5f746867

aluigi, posted Thu Dec 18, 2014 2:34 pm (2217)

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Ok so it's not the same format as it was stated before.

frogz2007, posted Thu Dec 18, 2014 6:27 pm (2221)

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I do have a script that a friend of mine named "albinoleopard" made, but it only extracts file names. Would you like it so you could study on the format? If so, here it is:

http://www.mediafire.com/download/ddelx ... ractor.bms

aluigi, posted Thu Dec 18, 2014 6:42 pm (2222)

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I checked the sample you provided, the format is really very simple:

Code:

get OFFSET long
goto OFFSET
get FILES long
for i = 0 < FILES
    get DUMMY long
    get OFFSET long
    get SIZE long
    get NAME string
    get TSTAMP longlong
    log NAME OFFSET SIZE
next i

frogz2007, posted Thu Dec 18, 2014 9:26 pm (2224)

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Thanks! I think this would be more difficult, but would it be possible to make a script that can create a new, modified .arc file? I thank you for doing this.

aluigi, posted Thu Dec 18, 2014 10:42 pm (2225)

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The script is valid for reimporting.
It's not possible to write scripts that build archives from scratch, at least not easily.

frogz2007, posted Fri Dec 19, 2014 1:05 am (2227)

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So it would be possible to re-import these extracted files into the .arc file? I'll try and figure out how to use the reimport function.

EDIT: Figured it out. Thanks so much!

frogz2007, posted Thu Dec 25, 2014 8:25 am (2287)

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Hey, aluigi. I'm not sure if you can pull this off, but is it possible to convert the models contained in the .ARC files into .OBJ or some other format that is usable? I have a friend who goes by the name "albinoleopard" and he can do it, but I haven't gotten a response from him in quite some time. Thanks

aluigi, posted Sun Dec 28, 2014 2:53 am (2319)

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Unfortunately I can't help with the model files.

frogz2007, posted Sun Dec 28, 2014 11:17 am (2336)

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Hmm, ok. What about textures, then? Or...

aluigi, posted Sun Dec 28, 2014 11:28 am (2338)

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I can help only with archives and things related to compressions and maybe encryptions.

frogz2007, posted Sun Dec 28, 2014 11:48 am (2341)

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Ah. I see. I have a request that you may be able to fulfill: I extracted a DS game ROM and couldn't help but notice the source code to the game is there, albeit in an archive with the extension .nitro_archive. I will attach the source files to the game, zipped in a 7z archive. And, if you do happen to figure it out, try and make it so re-importing is possible.

aluigi, posted Sun Dec 28, 2014 12:25 pm (2348)

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In this case we have half luck.
I'm able to extract the files from the archive:
http://aluigi.org/papers/bms/others/nitro_archive.bms

But the files are non-standard, they are resources that use custom formats of this engine.
For example the nitro_texture files don't contain DDS or other known file formats, they seem uncompressed textures with a custom header.

frogz2007, posted Sun Dec 28, 2014 12:34 pm (2350)

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Wow. I'm impressed you got the files to extract! Good job! Just that alone is quite the accomplishment.