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<!DOCTYPE html>
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<title>Matrix Rain: 2025 refactor</title>
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<h2 class="center" id="title">MATRIX RAIN: 2025 REFACTOR</h2>
<h6 class="center">21 DECEMBER 2025</h5>
<br>
<div class="twocol justify"><p>Unicode support added. ASCII + Katakana working:</p>
<video style="max-width:100%;" controls="" poster="poster.png">
<source src="matrix.mp4" type="video/mp4" />
</video>
<p>Algorithm notes: mat.col[] = shuffled column indices, mat.row[] = last row per
column. shuffle() sets working set, main loop draws columns via index i (line
333), swap() rotates set.</p>
<p>Phosphor decay moved to LSB of RGB union. Should have done this originally.</p>
<p>RGB/PD union stays. Little-endian machine, portability not a concern.</p>
<p>Charset via UNICODE(min, max) macro - packs range into uint64, insert_code()
unpacks and selects random char.</p>
<p>Half-width Katakana (U+FF61-U+FF9F) for column alignment.</p>
<p>Removed license, automake files. Build: cc -O3 main.c -o matrix</p>
<p>Performance: 2% CPU, OpenBSD, T490.</p>
<p>Commit:
<a href="https://git.asciimx.com/matrix-digital-rain/commit/?id=03f8d87ba7c2e46bd3f3cc4c772fb3a2ac740c92">03f8d87</a></p>
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<p class="post-author right">by W. D. Sadeep Madurange</p>
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