Flow-field particles · glm-5.3-flash
Output generated Cost / run $0.0012 Runtime 59.9s
Prompt for this run
Build a full-screen flow-field particle animation using the provided p5.js library in global or instance mode. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. Use the provided `p5.min.js` (global `p5`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Animate at least 2,000 particles, with motion guided by a smoothly varying Perlin-noise vector field. Nearby particles should follow locally coherent directions. - Leave fading trails and vary particle colors over time. Evolve the field gradually so the pattern changes instead of repeating a short recorded sequence. - Recycle particles at the canvas boundaries and keep the population bounded. Avoid allocating an ever-growing trail history. - Provide Pause/Resume and Restart. Restart clears trails and initializes a new particle arrangement. - Fit the viewport and keep controls responsive at 1200 by 800. Choose the palette, field scale, and particle speed freely. Verify: Sample the animation at several moments to inspect coherent nearby particle motion, fading trails, and changing colors. Pause and resume, then use Restart and check that the trails clear and a new arrangement appears.
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 · 17 messages
Build a full-screen flow-field particle animation using the provided p5.js library in global or instance mode. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. Use the provided `p5.min.js` (global `p5`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Animate at least 2,000 particles, with motion guided by a smoothly varying Perlin-noise vector field. Nearby particles should follow locally coherent directions. - Leave fading trails and vary particle colors over time. Evolve the field gradually so the pattern changes instead of repeating a short recorded sequence. - Recycle particles at the canvas boundaries and keep the population bounded. Avoid allocating an ever-growing trail history. - Provide Pause/Resume and Restart. Restart clears trails and initializes a new particle arrangement. - Fit the viewport and keep controls responsive at 1200 by 800. Choose the palette, field scale, and particle speed freely. Verify: Sample the animation at several moments to inspect coherent nearby particle motion, fading trails, and changing colors. Pause and resume, then use Restart and check that the trails clear and a new arrangement appears.
thinking
Write index.html, then browser check.
{"command":"ls /tmp/job-6oeWCV"}p5.min.js
index.html (2799 bytes)Successfully wrote to index.html
{"action":"reload"}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":"Pause\nRestart","images":"attached"}
thinking
Trails work, coherent motion visible but very dim/short. Fine — could brighten slightly. Sample later moments, test pause/restart.
Trails and coherent flow are rendering. Let me sample later moments and test controls.
{"action":"motion"}Frame 1, +0ms
[Browser image supplied to model]
Frame 2, +604ms
[Browser image supplied to model]
Frame 3, +1203ms
[Browser image supplied to model]
Frame 4, +1786ms
[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":"Pause\nRestart","images":"attached"}
thinking
Looks great — trails fade, colors shift orange→yellow-green. Test Pause and Restart.
Flow, trails, and evolving colors look good. Now test Pause/Resume and Restart.
{"action":"click","x":46,"y":28}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":"Resume\nRestart","images":"attached"}
{"action":"click","x":46,"y":28}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":"Pause\nRestart","images":"attached"}
thinking
Pause/resume works. Now Restart — trails should clear to dark background and new arrangement appear.
{"action":"click","x":132,"y":28}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":"Pause\nRestart","images":"attached"}
Restart works — trails cleared to a dark canvas and a fresh random particle arrangement appeared. All behaviors verified: - **Flow field**: 3,000 particles driven by 3D Perlin noise (x, y, slowly evolving z offset); nearby particles share locally coherent directions, forming converging filament patterns. - **Trails**: per-frame translucent fade rect produces smooth fading trails; no history buffers, fixed particle array (bounded population), particles recycled at edges with randomized respawn plus lifespan resets. - **Color**: global hue drifts continuously over time (orange → yellow-green visible across samples), each particle with its own hue offset. - **Pause/Resume**: toggled via button — animation froze and resumed with correct label change. - **Restart**: cleared trails, reinitialized particles, reseeded field offset and hue. - **Layout**: full-viewport canvas, responsive controls top-left, no console errors (only an unrelated iframe sandbox warning from the harness). Remaining unverified: long-run memory stability (implied by fixed-size array) and window-resize behavior (handler is wired but not visually tested).