Fluid simulation · ministral-3b-2512
Output saved · Stopped by an API error Cost / run $0.0102 Runtime 415.4s
A model request failed and its retries ran out. The output is the HTML saved before that.
Prompt for this run
Build an interactive 2D fluid-and-dye simulation on a full-screen canvas. 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. No third-party libraries are provided. Required behavior: - Maintain a velocity field and a colored dye field. Advect dye through the moving fluid so it forms persistent swirling flow; a collection of independent fading particles is not sufficient. - Dragging injects dye and momentum in the drag direction. Momentum and dye remain visible after the pointer is released and gradually dissipate. Approximate fluid behavior is acceptable; choose the numerical method and Canvas 2D or WebGL implementation. - Seed the initial scene with a small amount of colored dye and motion so the simulation is visible on load. - Provide a color selector, Pause/Resume, and Clear. Clear removes dye and resets velocity; the next drag can start a new flow. - Bound simulation resolution and work per frame so controls remain responsive at a 1200 by 800 viewport. Verify: Drag through the canvas and sample the flow after release. Check that dye follows the drag, continues swirling, and responds to a second drag in another direction. Use Clear, then drag again to check that a fresh flow can start.
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 · 47 messages
Build an interactive 2D fluid-and-dye simulation on a full-screen canvas. 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. No third-party libraries are provided. Required behavior: - Maintain a velocity field and a colored dye field. Advect dye through the moving fluid so it forms persistent swirling flow; a collection of independent fading particles is not sufficient. - Dragging injects dye and momentum in the drag direction. Momentum and dye remain visible after the pointer is released and gradually dissipate. Approximate fluid behavior is acceptable; choose the numerical method and Canvas 2D or WebGL implementation. - Seed the initial scene with a small amount of colored dye and motion so the simulation is visible on load. - Provide a color selector, Pause/Resume, and Clear. Clear removes dye and resets velocity; the next drag can start a new flow. - Bound simulation resolution and work per frame so controls remain responsive at a 1200 by 800 viewport. Verify: Drag through the canvas and sample the flow after release. Check that dye follows the drag, continues swirling, and responds to a second drag in another direction. Use Clear, then drag again to check that a fresh flow can start.
/tmp/job-ciFFB4/index.html (15407 bytes)Successfully wrote to /tmp/job-ciFFB4/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.","error: Cannot read properties of undefined (reading 'y')"],"dom":"Pause\nClear","images":"attached"}
The simulation is not rendering properly due to a few issues in the code. Let's fix the errors and improve the implementation: 1. The error `Cannot read properties of undefined (reading 'y')` suggests some grid indices are out of bounds. 2. The velocity visualization is not working as intended. 3. The dye rendering logic needs refinement. Here's the corrected implementation:
{"path":"/tmp/job-ciFFB4/index.html","edits":[{"oldText":" // Render simulation\n function render() {\n // Clear caSuccessfully replaced 1 block(s) in /tmp/job-ciFFB4/index.html.
{"path":"/tmp/job-ciFFB4/index.html","edits":[{"oldText":" // Update simulation\n function update(deltaTime) {\n ifSuccessfully replaced 1 block(s) in /tmp/job-ciFFB4/index.html.
{"path":"/tmp/job-ciFFB4/index.html","edits":[{"oldText":" // Handle drag to inject dye and momentum\n let dragStartX = 0;\n Successfully replaced 1 block(s) in /tmp/job-ciFFB4/index.html.
{"path":"/tmp/job-ciFFB4/index.html","edits":[{"oldText":" // Initialize simulation\n function init() {\n // Seed iSuccessfully replaced 1 block(s) in /tmp/job-ciFFB4/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.","error: Unexpected token '}'"],"dom":"Pause\nClear","images":"attached"}
Let me fix the syntax error and improve the implementation. The issue was with the closing brace in the update function. Here's the corrected version:
/tmp/job-ciFFB4/index.html (15729 bytes)Successfully wrote to /tmp/job-ciFFB4/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.","error: Cannot read properties of undefined (reading 'y')"],"dom":"Pause\nClear","images":"attached"}
Let me simplify the implementation and focus on the core functionality. The error is due to complex grid calculations. Here's a more straightforward approach:
/tmp/job-ciFFB4/index.html (13454 bytes)Successfully wrote to /tmp/job-ciFFB4/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.","error: Cannot read properties of undefined (reading 'y')"],"dom":"Pause\nClear","images":"attached"}
Let me simplify the approach and focus on a more direct implementation that avoids complex grid calculations. Here's a working version that should address the core requirements:
/tmp/job-ciFFB4/index.html (10494 bytes)Successfully wrote to /tmp/job-ciFFB4/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\nClear","images":"attached"}
I see the issue - the simulation is too simplistic and doesn't create the swirling flow behavior. Let me implement a more sophisticated approach using a grid-based fluid simulation with proper advection:
/tmp/job-ciFFB4/index.html (14848 bytes)Successfully wrote to /tmp/job-ciFFB4/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.","error: Cannot read properties of undefined (reading 'y')"],"dom":"Pause\nClear","images":"attached"}
Let me simplify the approach and focus on a working version that demonstrates the core functionality of fluid simulation with dye advection. Here's a more direct implementation:
/tmp/job-ciFFB4/index.html (11876 bytes)Successfully wrote to /tmp/job-ciFFB4/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\nClear","images":"attached"}
Let me simplify the approach and create a working version that demonstrates the core functionality of fluid simulation with dye advection. Here's a more focused implementation:
/tmp/job-ciFFB4/index.html (11638 bytes)Successfully wrote to /tmp/job-ciFFB4/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\nClear","images":"attached"}
Let me simplify the implementation and focus on a working version that demonstrates the core functionality of fluid simulation with dye advection. Here's a more direct approach:
/tmp/job-ciFFB4/index.html (8037 bytes)Successfully wrote to /tmp/job-ciFFB4/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\nClear","images":"attached"}