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<h1>The International Obfuscated C Code Contest</h1>
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<h2>1993/rince - Most well rounded</h2>
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<h3>game state machine language that comes with a number of games</h3>
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</div>
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<a class="Left" href="../plummer/index.html">← 1993/plummer</a>
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<a class="Left" href="../index.html">↑ 1993 ↑</a>
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<a class="Left" href="../schnitzi/index.html">1993/schnitzi →</a>
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<a class="Right" href="https://github.com/ioccc-src/winner/blob/master/1993/rince/rince.c">C code</a>
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<a class="Right" href="https://github.com/ioccc-src/winner/blob/master/1993/rince/Makefile">Makefile</a>
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<a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F1993%2Frince%2Findex.html">✓</a>
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<h2 id="author">Author:</h2>
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<ul>
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<li>Name: <a href="../../authors.html#James_Bonfield">James Bonfield</a><br>
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Location: <a href="../../location.html#GB">GB</a> - <em>United Kingdom of Great Britain and Northern Ireland</em> (<em>United Kingdom</em>)</li>
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<!-- BEFORE: 1st line of markdown file: 1993/rince/README.md -->
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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><strong>NOTE</strong>: there are two alternate versions of this program, both allowing one to
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slow down the game and the second one with movements more familiar to vi users.
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See the <a href="#alternate-code">Alternate code</a> section below.</p>
|
||
<h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
|
||
<p>The current status of this entry is:</p>
|
||
<blockquote>
|
||
<p><strong>STATUS: INABIAF - please DO NOT fix</strong></p>
|
||
</blockquote>
|
||
<p>For more detailed information see <a href="../../bugs.html#1993_rince">bugs report with 1993/rince</a>.</p>
|
||
<h2 id="to-use">To use:</h2>
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||
<pre><code> ./rince [cabbage]</code></pre>
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||
<p>where:</p>
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<p><code>[cabbage]</code> is a CABBAGE description file (default: <code>rince.c</code>)</p>
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<h2 id="alternate-code">Alternate code:</h2>
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||
<p>Some people may want to slow down the game by increasing the
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value 17 in the lines:</p>
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<pre><code> struct timeval v= {0,1<<17} ;</code></pre>
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<p>and</p>
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<pre><code> refresh(),c=select(k,&y,0,0,(v.tv_usec=1<<17,&v))?getch():0;</code></pre>
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<p>to another value like 18 or 19 which you can do with the alternate code.</p>
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<p>In the case of <a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/rince.alt2.c">rince.alt2.c</a> the movement keys for the default
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||
game are slightly different and will feel more familiar to vi users: <code>h</code> for
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||
left, <code>l</code> for right (that was not changed) and <code>k</code> for fire (that was also not
|
||
changed).</p>
|
||
<h3 id="alternate-build">Alternate build:</h3>
|
||
<pre><code> make SLEEP=18 clobber alt</code></pre>
|
||
<p>Replace 18 with whatever number you wish.</p>
|
||
<h3 id="alternate-use">Alternate use:</h3>
|
||
<p>Use <code>rince.alt</code> or <code>rince.alt2</code> as you would <code>rince</code> above.</p>
|
||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||
<p>The author has provided several CABBAGE files for your amusement:</p>
|
||
<ul>
|
||
<li><p><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/rince.data1">rince.data1</a> plays
|
||
<a href="https://en.wikipedia.org/wiki/Breakout_(video_game)">Breakout</a>. Keys are <code>,</code>
|
||
for left, <code>/</code> for right, and <code>.</code> for ‘fire the ball’.</p></li>
|
||
<li><p><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/rince.data2">rince.data2</a> plays the old <a href="../../authors.html#James_Bonfield">James Bonfield</a>
|
||
(<a href="../../1991/rince/index.html">1991/rince</a> game from <a href="../../1991/index.html">IOCCC
|
||
1991</a>).</p></li>
|
||
<li><p><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/rince.data3">rince.data3</a>
|
||
<a href="https://en.wikipedia.org/wiki/Sokoban">Sokoban</a> screen 11. You are the <code>o</code> character.
|
||
You must push the money <code>m</code> into the dotted region of the screen. The game is
|
||
considered finished when all the <code>m</code>s are then <code>M</code>s.</p></li>
|
||
<li><p><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/rince.data4">rince.data4</a>
|
||
<a href="https://en.wikipedia.org/wiki/Sokoban">Sokoban</a> screen 13. Same rules as above.</p></li>
|
||
</ul>
|
||
<p>For a brief design description, see <a href="design.html">design.html</a>.</p>
|
||
<h3 id="warning-for-sunos-4.1.x">WARNING for SunOS 4.1.x:</h3>
|
||
<p>If you are running SunOS 4.1.x (assuming you can find an ANSI
|
||
compiler in the first place), this program may be used to log
|
||
out very quickly. Unfortunately, you can’t do anything else
|
||
with it.</p>
|
||
<h3 id="additional-notes">Additional notes</h3>
|
||
<p>Some people report that <code>rince</code> dumps core on their system.</p>
|
||
<p>On some systems that use gcc, the <code>curses.h</code> used by gcc (typically
|
||
<code>/usr/local/include/curses.h</code> if not <code>/usr/include/curses.h</code>) is not compatible
|
||
with the curses library (typically <code>/lib/libcurses.a</code> for static libraries)
|
||
used. It has been suggested that the following gcc command may help:</p>
|
||
<pre><code> gcc -fno-builtin -I/usr/include -o rince rince.c -lcurses -ltermcap</code></pre>
|
||
<h2 id="authors-remarks">Author’s remarks:</h2>
|
||
<p>This is a Cellular Automata Based, Beautifully Abysmal Game Environment (or
|
||
CABBAGE for short). To execute the program simply type <code>./rince gamefile</code>,
|
||
where <code>gamefile</code> is a game description file. A few are supplied for your
|
||
enjoyment. Alternatively, with no arguments it will default to using it’s own
|
||
datafile (the source code in fact). This happens to be a game of <a href="https://en.wikipedia.org/wiki/Space_Invaders">Space
|
||
Invaders</a>.
|
||
To prevent people from firing too often a very simple method is employed; you
|
||
must move after firing to be able to fire again.</p>
|
||
<h3 id="keys">Keys</h3>
|
||
<ul>
|
||
<li><code>j</code> - Left</li>
|
||
<li><code>l</code> - Right</li>
|
||
<li><code>k</code> - Fire</li>
|
||
</ul>
|
||
<p>This is a new breed of generic games. For instance:</p>
|
||
<p>Game play : Whatever you define
|
||
Keys : Whatever you define
|
||
Score : If you can figure out how to update it!
|
||
Levels : Ahh well… it’s not <em>totally</em> generic.</p>
|
||
<p>The proper definition for usage would be: <code>./rince [data_filename]</code></p>
|
||
<h3 id="portability">Portability</h3>
|
||
<p>I have compiled in on the following systems:</p>
|
||
<pre><code> System OS Compiler (and flags)
|
||
DECstation 5000/240 Ultrix 4.2A c89 -std
|
||
SPARCstation 1+ SunOS 4.1 gcc -ansi -pedantic
|
||
SPARCstation 10/31 Solaris 2.1 gcc -ansi -pedantic (*)
|
||
DECAlpha 3000/500 OSF/1 V1.2 c89 -std
|
||
SGI Indigo (R4000) IRIX 4.0.5F cc -ansi
|
||
Alliant FX2800 Conentrix 3.0.0 fxc</code></pre>
|
||
<p>* I never said it worked! The guidelines state that you dislike programs that
|
||
won’t <em>compile</em> under both BSD or SysV <code>Unix</code>. This compiles, and indeed runs
|
||
on all the others (both BSD and SysV) correctly.</p>
|
||
<p>Alas, on Solaris it compiles, but mysteriously stops displaying output
|
||
after a while until you quit with control-c, when it all catches up again.
|
||
I think the problem may lie in either <code>select(2)</code>, or curses, (or perhaps
|
||
conflict of the two).</p>
|
||
<p>The use of <code>select(2)</code> no doubt makes it less portable to STRICT SysV machines.
|
||
However I have tested this on several so-called SysV machines, and all of them
|
||
support <code>select(2)</code>. In fact, the <code>select(2)</code> they support appears to be more
|
||
portable between them than their <code>poll(2)</code> call.</p>
|
||
<h3 id="obfuscation">Obfuscation</h3>
|
||
<p>I have tried to use as many different obfuscation techniques, including
|
||
some of which (such as <code>sizeof</code> confusion) I have not seen in any entries
|
||
(hmmm - perhaps there’s a reason for that…) so far. Also, very poor
|
||
structure (yes, I use <code>goto</code>’s) has led to apparently having an <code>fgets(3)</code> as
|
||
the last line of main. Note that I have still tried to aim at least some
|
||
efficiency (provided it makes things slightly more obfuscated of course).
|
||
One such thing is the way I dynamically allocate a 2-dimensional array
|
||
using only ONE <code>malloc(3)</code>. Hence this program could be used as a tutorial
|
||
for all those people who consistently ask this question in the C
|
||
newsgroups.</p>
|
||
<p>Also, the program does require a volatile type (especially when
|
||
optimising) to perform correctly. This is the first time I have ever
|
||
truly needed this when not accessing memory external to this process :-)</p>
|
||
<p>Of course, all the usual obfuscation lurks within, such as combining
|
||
multiple for loops into single ones; warped and twisted logic; plus a
|
||
plethora of other minor oddities. It’s up to you to discover some of them
|
||
of course… Sometimes I have sacrificed length for obfuscation. It is all
|
||
too easy to change the arguments in <code>main()</code> to one character identifiers, but
|
||
in my opinion they add to obfuscation in this case by being longer.</p>
|
||
<p><code>lint</code> complains about lots of things. Firstly the use of curses immediately
|
||
makes <code>lint</code> complain. The Alpha’s <code>lint</code> gave me some positive encouragement!
|
||
<code>precedence confusion possible: parenthesize!</code> :-) :-)
|
||
<code>main()</code> does not return correctly, because, basically, it doesn’t return.</p>
|
||
<h3 id="bugs">Bugs</h3>
|
||
<p>Very little error checking is performed. I do check for not being able to
|
||
open the requested filename and return 1 upon failure. However, badly
|
||
formatted data files will cause major problems. No other checking (such as
|
||
insufficient memory) is performed.</p>
|
||
<p>There is no ‘end of game’ checking method. Hence games like Sokoban rely
|
||
on the user to decide when they have had enough. Also, there is no quit
|
||
mechanism other than control-c.</p>
|
||
<!--
|
||
|
||
Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.
|
||
|
||
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)
|
||
|
||
For more information, see:
|
||
|
||
https://creativecommons.org/licenses/by-sa/4.0/
|
||
|
||
-->
|
||
<!-- AFTER: last line of markdown file: 1993/rince/README.md -->
|
||
|
||
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|
||
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|
||
|
||
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|
||
|
||
<div id="inventory">
|
||
<h1 id="inventory-for-1993rince">Inventory for 1993/rince</h1>
|
||
</div>
|
||
<h2 id="primary-files">Primary files</h2>
|
||
<ul>
|
||
<li><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/rince.c">rince.c</a> - entry source code</li>
|
||
<li><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/Makefile">Makefile</a> - entry Makefile</li>
|
||
<li><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/rince.alt2.c">rince.alt2.c</a> - second alternate source code</li>
|
||
<li><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/rince.alt.c">rince.alt.c</a> - alternate source code</li>
|
||
<li><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/rince.orig.c">rince.orig.c</a> - original source code</li>
|
||
<li><a href="design.html">design.html</a> - implementation notes</li>
|
||
<li><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/rince.data1">rince.data1</a> - cabbage data file</li>
|
||
<li><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/rince.data2">rince.data2</a> - cabbage data file</li>
|
||
<li><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/rince.data3">rince.data3</a> - cabbage data file</li>
|
||
<li><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/rince.data4">rince.data4</a> - cabbage data file</li>
|
||
</ul>
|
||
<h2 id="secondary-files">Secondary files</h2>
|
||
<ul>
|
||
<li><a href="1993_rince.tar.bz2">1993_rince.tar.bz2</a> - download entry tarball</li>
|
||
<li><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/README.md">README.md</a> - markdown source for this web page</li>
|
||
<li><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/design.md">design.md</a> - markdown source for design.html</li>
|
||
<li><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/.entry.json">.entry.json</a> - entry summary and manifest in JSON</li>
|
||
<li><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
|
||
<li><a href="https://github.com/ioccc-src/winner/blob/master/1993/rince/.path">.path</a> - directory path from top level directory</li>
|
||
<li><a href="index.html">index.html</a> - this web page</li>
|
||
</ul>
|
||
<hr style="width:10%;text-align:left;margin-left:0">
|
||
<h4>
|
||
Jump to: <a href="#">top</a>
|
||
</h4>
|
||
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||
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|
||
|
||
</div>
|
||
|
||
<!-- END: this line ends content from: inc/after-content.default.html -->
|
||
<!-- START: this line starts content from: inc/footer.inventory.html -->
|
||
|
||
<!--
|
||
|
||
Copyright © 1984-2025 by Landon Curt Noll. All Rights Reserved.
|
||
|
||
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)
|
||
|
||
For more information, see:
|
||
|
||
https://creativecommons.org/licenses/by-sa/4.0/
|
||
|
||
-->
|
||
|
||
<div class="footer">
|
||
|
||
<div id="copyright"><h3>Copyright © 1984-2025 by Landon Curt Noll:
|
||
<a href="https://creativecommons.org/faq/#what-does-some-rights-reserved-mean"
|
||
target="_blank"
|
||
rel="license noopener noreferrer">Some Rights Reserved</a></h3>
|
||
<p>
|
||
This work is <b>licensed by Landon Curt Noll</b> under
|
||
<b><a href="https://creativecommons.org/licenses/by-sa/4.0/?ref=chooser-v1"
|
||
target="_blank"
|
||
rel="license noopener noreferrer"
|
||
style="display:inline-block;">CC BY-SA 4.0</a></b>.
|
||
<img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;"
|
||
src="../../png/cc.png"
|
||
alt="cc inside circle symbol">
|
||
<img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;"
|
||
src="../../png/by.png"
|
||
alt="person inside circle symbol">
|
||
<img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;"
|
||
src="../../png/sa.png"
|
||
alt="arrow looping back on itself inside circle symbol"><br>
|
||
You should <b>carefully review</b> the
|
||
<b><a href="https://creativecommons.org/licenses/by-sa/4.0/legalcode.en"
|
||
target="_blank"
|
||
rel="license noopener noreferrer">CC BY-SA 4.0 LEGAL CODE</a></b>
|
||
before using the licensed material.<br>
|
||
You may wish to review the
|
||
<b><a href="../../license.html"
|
||
target="_blank"
|
||
rel="license noopener noreferrer">highlights of some of the key features and terms</a></b>
|
||
of <b>CC BY-SA 4.0</b>.<br>
|
||
</p>
|
||
</div>
|
||
|
||
<div id="coda"><h3>Coda</h3>
|
||
<p>
|
||
<a href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F1993%2Frince%2Findex.html" rel="nofollow">Nu HTML check this web page</a><br>
|
||
<a href="#top">Jump to top</a> <a href="#content">Jump to Content</a> <a href="#inventory">Jump to Inventory</a><br>
|
||
</p>
|
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</div>
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</div>
|
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|
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|
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