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mozaic [2025/03/15 19:13] – created Yukimozaic [2025/03/20 01:28] (current) – Yuki
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 ====== Mozaïc ====== ====== Mozaïc ======
  
-[[https://www.youtube.com/watch?v=YygmFM3qP8w]]+Some game distributed with lottery tickets from Loto-Québec 
 + 
 +Download: [[https://archive.org/details/mozaic_202207]] (also hacked to bypass ticket validity checks) 
 + 
 +See also: [[https://www.youtube.com/watch?v=YygmFM3qP8w]] 
 + 
 +===== Install on Wine ===== 
 + 
 +This game makes heavy use of Indeo 5 and other DirectShow codecs so make sure to install it. Use a 32-bit prefix, and ideally pretend you're Windows XP and enable windowed mode. 
 + 
 +<code bash> 
 +# mount the ISO 
 +# the game won't run without it 
 +sudo mount MOZAIC.iso /mnt/cdrom 
 + 
 +# create a new 32-bit prefix 
 +# it currently won't work in a 64-bit prefix due to the codecs 
 +# also make sure the CD-ROM is detected as such 
 +export WINEARCH=win32 
 +export WINEPREFIX=~/.wine32 
 +winecfg 
 + 
 +# install the codecs 
 +winetricks -q allcodecs 
 + 
 +# install and run the game (also make sure $WINEPREFIX is set) 
 +wine /mnt/cdrom/Mozaic.exe 
 +</code> 
 + 
 +The installation may fail because you have an ''ï'' in the install path, you may remove it and put a normal ''i'' instead.
  
 ===== PAK file format ===== ===== PAK file format =====
Line 10: Line 39:
 |magic|string|0|4 bytes|"PACK"| |magic|string|0|4 bytes|"PACK"|
 |size|u32|4|4 bytes|Number of entries| |size|u32|4|4 bytes|Number of entries|
-|???| |8|32 bytes|Unknown|+|???| |8|32 bytes|Seems unused, can be used as a comment field|
 |filelist|File|40|size * (12 + name)| | |filelist|File|40|size * (12 + name)| |
  
Line 17: Line 46:
 ^Nom^Type^Offset^Size^Notes^ ^Nom^Type^Offset^Size^Notes^
 |filesize|u32|0|4 bytes| | |filesize|u32|0|4 bytes| |
-|offset|u32|4|4 bytes|Offset within the file| +|offset|u32|4|4 bytes|Byte offset from the beginning of the file| 
-|???|u32|8|4 bytes| | +|???|u32|8|4 bytes|Unknown, the game crashes right away if it's not what it expected| 
-|name|string|12| |Null-terminated string|+|name|Null-terminated string|12| |File path and name|
  
 ==== ImHex pattern ==== ==== ImHex pattern ====
Line 25: Line 54:
 <code c> <code c>
 import std.string; import std.string;
- 
-char magic[4] @ 0; 
-u32 size @ 4; 
  
 struct File { struct File {
     u32 filesize;     u32 filesize;
     u32 offset;     u32 offset;
-    u32 type;+    u32 unknown;
     std::string::NullString name;     std::string::NullString name;
     char data[filesize] @ offset;     char data[filesize] @ offset;
 }; };
  
-File filelist[size] @ 0x28;+char magic[4] @ 0; 
 +u32 size @ 4; 
 +char unknown[32] @ 8; 
 +File filelist[size] @ 40;
 </code> </code>
 +
 +===== Tools =====
 +
 +<html><details><summary>Node.js pak extractor</summary></html>
 +<code javascript extractpak.js>
 +const fs = require('node:fs');
 +const path = require('node:path');
 +
 +if(process.argv.length < 3)
 +{
 +    console.log("error: no input file");
 +    process.exit(1);
 +}
 +
 +var f = fs.readFileSync(process.argv[2]);
 +
 +var magic = f.toString('hex', 0, 4);
 +if(magic != "5041434b")
 +{
 +    console.log("error: invalid file");
 +    process.exit(1);
 +}
 +
 +var size = f.readUInt32LE(4);
 +var offset = 40;
 +
 +for(var i = 0; i < size; i++)
 +{
 +    var filesize = f.readUint32LE(offset); offset+=4;
 +    var fileoffset = f.readUint32LE(offset); offset+=4;
 +    var mystery = f.readUint32LE(offset); offset+=4;
 +    var next = f.indexOf(0, offset, 'ascii');
 +    var name = f.toString('ascii', offset, next).replaceAll("\\", "/");
 +    offset = next+1;
 +    console.log("%s; %s", name, mystery);
 +
 +    fs.mkdirSync(path.dirname(name), { recursive: true });
 +    var data = fs.createWriteStream(name, 'binary');
 +    data.end(f.slice(fileoffset, fileoffset+filesize));
 +}
 +</code>
 +<html></details></html>
 +
 +[[https://a39.dev/yuki/mpar|mpar]] - extractor and archiver
mozaic.1742080438.txt.gz · Last modified: by Yuki

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