mirror of
https://github.com/dhewm/iddevnet.git
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92 lines
4 KiB
HTML
92 lines
4 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
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<!-- saved from url=(0044)https://www.iddevnet.com/doom3/packfiles.php -->
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
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<title>id.sdk [Pack Files]</title>
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<link rel="stylesheet" href="style.css">
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</head>
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<body marginwidth="0" marginheight="0" topmargin="0" leftmargin="0">
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<table border=0 cellpadding=0 cellspacing=0 style="width: 100%; height: 99px">
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<tr>
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<td style="width: 171px"><img src="images/doom.jpg" style="width: 171px; height: 99px" alt=""></td>
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<td style="background: url(images/tile.gif)">
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<table border=0 cellpadding=0 cellspacing=0 width=600>
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<tr>
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<td style="height: 19px; background: url(images/sdk.gif) no-repeat"></td>
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<td rowspan=4 align=right><img src="images/id.gif" style="width: 42px; height: 99px" alt=""></td>
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</tr>
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<tr><td style="height: 29px; background: url(images/top.jpg) no-repeat"></td></tr>
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<tr><td style="height: 27px; background: url(images/middle.gif)" class="title"> Making DOOM 3 Mods : Pack Files</td></tr>
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<tr><td style="height: 24px; background: url(images/bottom.jpg) no-repeat"></td></tr>
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</table>
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</td>
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</tr>
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</table>
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<table border=0 cellpadding=0 cellspacing=0 style="width: 770px">
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<tr>
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<td colspan=2 style="background: url(images/boxtop.gif);"><img src="images/span.jpg" style="width: 397px; height: 20px; float: left" alt=""></td>
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</tr>
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<tr>
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<td style="vertical-align: top; width: 152px; background: url(images/tileleft.gif)">
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<div class="leftMenu">
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<script src="menu.js"></script>
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</div>
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</td>
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<td class="mainContent">
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<p>
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Every asset in the game is stored in a pack file for release. The pack files are just normal zip files with
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the .pk4 extension, which is the same system used in Quake III Arena. This means you can open the pack files
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in the base folder using a zip program and browse all the assets in the game.
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</p><p>
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The pack file system offers 3 huge benefits:
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</p><ul>
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<li><b>Compression</b><br>
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The assets for Doom 3 are 3.6GB uncompressed, and only 1.44GB after being packed up.
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<br><br>
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</li><li><b>Checksum</b><br>
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Multiplayer servers check the signature (checksum) of the pack file on the client machine to ensure all clients
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are playing with the same versions of all files. This is known as having a pure server.
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<br><br>
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</li><li><b>Distribution</b><br>
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It's a lot easier to distribute a single large file rather than dozens of little files.
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</li></ul>
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<p>
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During development you don't want to have to re-pack all the files every time you change something, so
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the game is set up to look for files in the directory to override files in the packs. However, it
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only does this in single player. If you want to use files from the directory in multiplayer, you need to disable
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pure (set si_pure 0) before starting the server. This is also true if you want clients to be able to use different
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files than the server.
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</p><p>
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<img src="images/packfiles_a.png" border="1" align="right">
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A pack file has to have an internal directory structure that mirrors the file system. The easiest way to make sure
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this happens (using <a href="http://www.winzip.com/">winzip</a>) is to select the files and folders in your mod directory
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and choose 'Add to <modname>.zip' You can then rename it to <something>.pk4
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</p><p>
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The game dll (gamex86.dll) cannot be in the same pack file as the other assets.
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It has to be in its own pack file along with a config.conf file.
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This is to easily support multiple platforms (mac, linux, windows).
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<br>
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</p></td>
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</tr>
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<tr>
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<td colspan="2" bgcolor="#CCCCCC"><img src="images/span2.gif" style="width: 397px; height: 8px; float: left;"></td>
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</tr>
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</tbody></table>
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<table border="0" cellpadding="0" cellspacing="0" width="770">
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<tbody><tr>
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<td align="left" class="legalese">Copyright <20> 2004 <a href="http://www.idsoftware.com/">id software</a></td>
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</tr>
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</tbody></table>
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</body></html>
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