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<title>1998/dloweneil - Most Fun</title>
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<img src="../../png/ioccc.png" alt="IOCCC image by Matt Zucker" width=300 height=110>
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<h1>The International Obfuscated C Code Contest</h1>
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<h2>1998/dloweneil - Most Fun</h2>
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<a class="Left" href="../dlowe/index.html">← dlowe</a>
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<a class="Left" href="../index.html">↑ 1998 ↑</a>
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<a class="Left" href="../dorssel/index.html">dorssel →</a>
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<a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/dloweneil/dloweneil.c">C code</a>
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<h2 id="authors"><a name="author"></a>Authors:</h2>
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<ul>
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<li>Name: <a href="../../authors.html#J_David_Lowe">J. David Lowe</a><br>
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Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)
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<br><br></li>
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<li>Name: <a href="../../authors.html#Neil_Mix">Neil Mix</a><br>
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Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></li>
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<h2 id="to-build">To build:</h2>
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<pre><code> make all</code></pre>
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<p>There is an alternate version available that has a key configuration that will
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be more familiar to vi(m) users and also allows one to quit. See <a href="#alternate-code">alternate
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code</a> below.</p>
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<h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
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<p>The current status of this entry is:</p>
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<pre><code> STATUS: missing or dead link - please provide them</code></pre>
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<p>For more detailed information see <a href="../../bugs.html#1998_dloweneil">1998 dloweneil bugs</a>.</p>
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<h2 id="to-use">To use:</h2>
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<pre><code> ./pootris [X size of board] [Y size of board]</code></pre>
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<p>Pressing <code>a</code> moves the current letter position counterclockwise/anticlockwise
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(a)round the border of the playing field.</p>
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<p>Pressing <code>s</code> moves the current letter one position clockwise around the border
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of the playing field.</p>
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<p>Pressing <code>d</code> drops the current letter onto the board.</p>
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<h2 id="alternate-code">Alternate code:</h2>
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<p>This version has it so that where in addition to <code>a</code> moving you
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counterclockwise/anticlockwise <code>h</code> does as well; and in addition to <code>s</code> moving
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clockwise <code>l</code> does as well. Instead of using <code>d</code> to drop the letter you can do
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<code>j</code> or space. Finally to quit this version you can press <code>q</code>.</p>
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<h3 id="alternate-build">Alternate build:</h3>
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<pre><code> make alt</code></pre>
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<h3 id="alternate-use">Alternate use:</h3>
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<pre><code> ./pootris.alt [X size of board] [Y size of board]</code></pre>
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<h2 id="judges-remarks">Judges’ remarks:</h2>
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<p>Read the authors’ remarks below to find out how to play. We believe that your
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experience may mirror one of our experiences:</p>
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<pre><code> Originally, I didn't appreciate the game. Then I actually read the
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description of the controls. I started playing. I struggled.
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I spelled my first "poot". I was hooked ...</code></pre>
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<h2 id="authors-remarks">Author’s remarks:</h2>
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<h3 id="usage">Usage</h3>
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<pre><code> ./pootris [X size of board] [Y size of board]</code></pre>
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<h3 id="synopsis">Synopsis</h3>
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<p>The object of this game is to spell <code>POOT</code> as much as possible. There
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is no time pressure. You’re given one letter at a time (sort of randomly
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chosen from the set ‘P’, ‘O’, and ‘T’) and you get to move it freely
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around the border of the playing board, and decide when and where to drop
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it into the board. Sound easy? Of course, there’s a catch…</p>
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<h3 id="controls">Controls</h3>
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<p>Only three controls:</p>
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<p><code>a</code>: moves the current letter one position counterclockwise around
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the border of the playing field.</p>
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<p><code>s</code>: moves the current letter one position clockwise around the border
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of the playing field.</p>
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<p><code>d</code>: drops the current letter onto the board.</p>
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<p>To quit, send a fatal signal to the process.</p>
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<h3 id="rules-of-motion">Rules of motion</h3>
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<p>The different letters move in different directions once dropped onto the board:</p>
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<p><code>P</code> moves diagonally, at a 45 degree angle and in a clockwise direction around
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the board once dropped.</p>
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<p><code>O</code> moves in a straight line perpendicular to the border from which it is
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dropped.</p>
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<p><code>T</code> moves diagonally, at a 45 degree angle and in a counterclockwise direction
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around the board once dropped.</p>
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<p>The letters bounce off the top and sides of the board. They bounce in a
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‘natural’ way, with the exception that <code>O</code>s will fall straight down if they hit
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a side wall.</p>
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<p>The letters stop when they hit another letter or the bottom of the board.</p>
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<h3 id="rules-of-spelling">Rules of spelling</h3>
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<ul>
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<li><p>When you spell <code>POOT</code> on the board, in any direction, the letters comprising
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||
the word will disappear, and any letters which may have accumulated above the
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||
disappeared letters will ‘fall’.</p></li>
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<li><p>Letters can be used in multiple spellings of <code>POOT</code>.</p></li>
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<li><p>Chain reactions are possible.</p></li>
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</ul>
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<h3 id="rules-of-scoring">Rules of scoring</h3>
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||
<ul>
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<li><p>You get one (1) point for each letter you drop onto the board.</p></li>
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<li><p>You get a bunch of points for spelling <code>POOT</code>. More if you spell it in more
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than one way simultaneously.</p></li>
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</ul>
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<h3 id="some-of-the-obfuscations">Some of the obfuscations</h3>
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<ul>
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<li><p>Several different coordinate systems are used. There’s the “real” X by Y
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system used for curses, the “inside the box” X by Y system used for moving
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||
things around and finding instances of <code>POOT</code> inside the box, and the position
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||
of the current letter, which is a single value from <code>0</code> to
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<code>2 * xsize + 2 * ysize - 1</code>.</p></li>
|
||
<li><p>The fact that <code>x%3</code> is a perfect hash function for <code>x</code> values <code>P</code>, <code>O</code> and <code>T</code>
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is used.</p></li>
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||
<li><p>Of course, the code is as hideous as possible, and spells <code>poot</code> for fun (It’s
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also exactly 3217 bytes in length, with exactly 1536 counted characters for
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purposes of this contest..</p></li>
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<li><p>Love that modulus operator! Mmmm…</p></li>
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<li><p>There are some equations used which are really unnecessarily ugly, which
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served the dual purposes of compacting the code and making it trickier to
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understand. I’m thinking of the equations used to convert between coordinate
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||
systems when dropping pieces into the game board.</p></li>
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||
<li><p>Simple and silly ones: short, meaningless (and sometimes misleading (see <code>x</code>))
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variable names; hard-coded ASCII numeric values used for character constants;
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||
using <code>goto</code> for fun and profit; reusing and re-purposing variables in different
|
||
places.</p></li>
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||
<li><p>The game itself is simple, but still weird and quite difficult.</p></li>
|
||
</ul>
|
||
<h3 id="some-things-i-wish-i-could-have-fit-into-this-but-didnt-have-the-space">Some things I wish I could have fit into this, but didn’t have the space:</h3>
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<ul>
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||
<li><p>Seeding the random number generator (doh!).</p></li>
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||
<li><p>Something to detect when the game is over.</p></li>
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||
<li><p>Some kind of scoreboard.</p></li>
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<li><p>Sound.</p></li>
|
||
<li><p>Some way of quitting gracefully.</p></li>
|
||
</ul>
|
||
<p>Good Luck!</p>
|
||
<!--
|
||
|
||
Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.
|
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|
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You are free to share and adapt this file under the terms of this license:
|
||
|
||
Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
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|
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For more information, see:
|
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|
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|
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<h1 id="inventory-for-1998dloweneil"><a name="inventory"></a>Inventory for 1998/dloweneil</h1>
|
||
<p><a href="#top">Jump to top</a></p>
|
||
<h2 id="primary-files">Primary files</h2>
|
||
<ul>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/dloweneil/dloweneil.c">dloweneil.c</a> - entry source</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/dloweneil/Makefile">Makefile</a> - entry Makefile</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/dloweneil/dloweneil.alt.c">dloweneil.alt.c</a> - alternative source</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/dloweneil/dloweneil.orig.c">dloweneil.orig.c</a> - original source</li>
|
||
</ul>
|
||
<h2 id="secondary-files">Secondary files</h2>
|
||
<ul>
|
||
<li><a href="1998_dloweneil.tar.bz2">1998_dloweneil.tar.bz2</a> - download entry tarball</li>
|
||
<li><a href="index.html">index.html</a> - this web page</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/dloweneil/README.md">README.md</a> - markdown source for this web page</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/dloweneil/.entry.json">.entry.json</a> - description of entry in JSON</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/dloweneil/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/dloweneil/.path">.path</a> - directory path from top directory</li>
|
||
</ul>
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<!--
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Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.
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|
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You are free to share and adapt this file under the terms of this license:
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Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
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For more information, see:
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https://creativecommons.org/licenses/by-sa/4.0/
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-->
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<div class="footer">
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<h2><a name="copyright"></a>Copyright and CC BY-SA 4.0 License</h2>
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<p>All IOCCC content including this file and web page are:</p>
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<b> Copyright © 1984-2024 by Landon Curt Noll. <a href="https://creativecommons.org/faq/#what-does-some-rights-reserved-mean">Some Rights Reserved</a>.</b>
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<p>This work is licensed by Landon Curt Noll under:</p>
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<p xmlns:cc="http://creativecommons.org/ns#" ><b><a href="https://creativecommons.org/licenses/by-sa/4.0/?ref=chooser-v1"
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target="_blank" rel="license noopener noreferrer" style="display:inline-block;"> CC BY-SA 4.0
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</a></b></p>
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<p>The <b>CC BY-SA 4.0 LEGAL CODE</b> for this license is found under:</p>
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<p> <b><a href="https://creativecommons.org/licenses/by-sa/4.0/legalcode.en">
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https://creativecommons.org/licenses/by-sa/4.0/legalcode.en</a></b></p>
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<p>You should <b>carefully review</b> all of the terms and conditions of the
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<a href="https://creativecommons.org/licenses/by-sa/4.0/legalcode.en">actual license</a>
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before using the licensed material.</p>
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<p>You may wish to review the <b><a href="../../license.html">highlights of some of the key
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features and terms</a></b> of the <a href="https://creativecommons.org/licenses/by-sa/4.0/legalcode.en">actual license</a>.</p>
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<h2>Coda</h2>
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<p><a href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1998%2Fdloweneil%2Findex.html">Nu HTML check this web page</a></p>
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<p><a href="#top">Jump to top</a> <a href="#content">Jump to Content</a> <a href="#inventory">Jump to Inventory</a></p>
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