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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>
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<div class="twocol justify"><p>Fixed the Unicode issue finally. Can now mix ASCII + Katakana.</p>
<video style="max-width:100%;" controls="" poster="poster.png">
<source src="matrix.mp4" type="video/mp4" />
</video>
<p>Moved Phosphor decay level into the 4th byte of the RGB union - should’ve done
this in 2022 instead of separate array. What was I thinking.</p>
<p>Keeping the RGB/PD union as it is. I’m aware of the portability issues, but I’m
on a little-endian machine, and I’m the only one reading this anyway. It’s
cleaner.</p>
<p>New charset array works. UNICODE(min, max) macro packs the range into uint64.
insert_code() unpacks block and picks random char.</p>
<p>Full-width Katakana breaks columns. Stick to half-width (U+FF61-U+FF9F) range .
Compile with -DNOKANA to disable Katakana altogether.</p>
<p>blend() is still good, left it alone.</p>
<p>Tossed license and automake cruft. Just <code class="language-plaintext highlighter-rouge">cc -O3 main.c -o matrix</code>. Don’t need
the ceremony.</p>
<p>Performance regressions: none. Runs like a charm on the T490. 2% CPU. No
whirring fans.</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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