Best Compression Methods for 'Specific' Games. Q&A

[Masquerade]

OK so I'd like to start by apologising to you for denying the use of xtool zlib, this is the first UE3 game I've seen use zlib on tfc/upk archives:

SAMPLE - xzlib

Compressed 24 files, 1,926,995,396 => 7,144,830,307 bytes. Ratio 370.78%
Compression time: cpu 1.89 sec/real 94.48 sec = 2%. Speed 20.40 mB/s
All OK

With that established, I have tagged below a sample compressor that will allow you to make an archive compatible with the ASIS script (I recommend using compact mode)

How to use:

1. Download the below 7z, extract it
2. Put your rocket league game folder in to In folder
3. Run the bat
4. Inside the bat, type:
   

   xprecomp+srep+lolz/$wem=srep+pmt_razor

5. Wait until done!

Compression method explanation:

xprecomp = xtool, configured for zlib.

srep+lolz - srep to remove duplicates and lolz for main compressor. If you want to use lzma2, swap lolz for "7z".

What does $wem mean?

This is a mask, and masks are a way of using multiple compression methods in one archive.

Each mask (and the file types included by it) is included in arc.groups.

This allows the main data to be compressed with xtool,srep,lolz then the audio gets compressed with srep,razor(pmt).

PMT is a chunk based accelerator for slow compressors like mtx, but ASIS doesn't have MTX yet, so PMT is what to use.

Because PMT is chunk based, we run srep beforehand to catch duplicates.

You can define a mask using the arc.groups file, and the grouping must begin with $groupname:

Example:

$help
*.bin
*.blob

This means you can separate off bin and blob files using the /$help identifier in your method.

If that's a bit confusing, I'm sorry!