Matrix digital rain · claude-sonnet-5.5
Output generated Cost / run $0.0421 Runtime 26.4s
Prompt for this run
Create the Matrix digital rain effect on a full-screen black canvas: columns of falling green katakana glyphs with a trailing fade and a brighter leading character.
TAKE IT TO CODE
A single self-contained HTML file — copy it and open in any browser, or reuse the prompt with your own pi-agent run.
RUN
METRICS
Transcript · 11 messages
Create the Matrix digital rain effect on a full-screen black canvas: columns of falling green katakana glyphs with a trailing fade and a brighter leading character.
/tmp/job-SilSuc/index.html (1665 bytes){"action":"screenshot"}Successfully wrote to /tmp/job-SilSuc/index.html
Frame 1, +0ms
[Browser image supplied to model]
{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"","images":"attached"}
thinking
I'm tweaking the drop spawn timing and speed to start closer to the screen and move faster, randomizing initial positions so the effect populates immediately, and adjusting the trail fade rate for smoother motion.
{"command":"cd /tmp/job-SilSuc && sed -i 's/drops\\[i\\]=Math.random()\\*-50;speeds\\[i\\]=.3+Math.random()\\*.5/drops[i]=Math.random()*H\\/{"action":"reload"}11: cols=Math.ceil(W/S);drops=[];speeds=[];for(let i=0;i<cols;i++){drops[i]=Math.random()*H/S*1.2-5;speeds[i]=.4+Math.random()*.6}} 35: if(py>H&&Math.random()>.975){drops[i]=0;speeds[i]=.4+Math.random()*.6}
Frame 1, +0ms
[Browser image supplied to model]
{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"","images":"attached"}
thinking
The trails are shorter than I want since I'm clearing cells before redrawing with a fade of 0.08, giving only about 4 characters of trail. I'll reduce the fade value to 0.04 for longer trails.
{"command":"cd /tmp/job-SilSuc && sed -i 's/rgba(0,0,0,0.08)/rgba(0,0,0,0.035)/' index.html"}(no output)
I wrote the Matrix rain to `/tmp/job-SilSuc/index.html`. It's one self-contained file with no external resources. It runs as a full-screen black canvas. Each column drops green katakana (plus digits) at its own speed, and the leading character is bright and glowing. Resizing the window rebuilds the columns. I checked it in the browser with two screenshots. The first showed only a few glyphs near the top. I changed the starting positions and speeds, and the second screenshot showed columns spread across the screen. After that screenshot I lengthened the trailing fade by lowering the fade opacity from 0.08 to 0.035. I didn't reload or screenshot after that last change, so the longer trails haven't been checked. The console showed only a sandbox warning from the preview iframe.