Boids flocking · gpt-6.1-terra
Output generated Cost / run $0.0679 Runtime 58.3s
Prompt for this run
Build a full-screen canvas flocking simulation with 150 boids drawn as oriented triangles. 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: - Combine separation, alignment, and cohesion so nearby boids avoid crowding, align their headings, and form moving groups. Triangles point in their direction of travel. - Use bounded speed and steering so motion changes smoothly instead of teleporting. Wrap boids across screen edges. - Boids within a visible or documented cursor-influence radius steer away from the pointer. They resume flocking after the pointer moves away. - Provide Pause/Resume and Reset. Pause freezes simulation state; Reset restores a fresh population of 150 boids. - Fit the canvas to the viewport and keep the population and controls usable after resizing. Verify: Sample the flock at several moments to check coordinated movement and triangles pointing along their travel direction. Try the cursor interaction with available pointer actions, then pause and resume to check that the flock freezes and continues.
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 · 21 messages
Build a full-screen canvas flocking simulation with 150 boids drawn as oriented triangles. 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: - Combine separation, alignment, and cohesion so nearby boids avoid crowding, align their headings, and form moving groups. Triangles point in their direction of travel. - Use bounded speed and steering so motion changes smoothly instead of teleporting. Wrap boids across screen edges. - Boids within a visible or documented cursor-influence radius steer away from the pointer. They resume flocking after the pointer moves away. - Provide Pause/Resume and Reset. Pause freezes simulation state; Reset restores a fresh population of 150 boids. - Fit the canvas to the viewport and keep the population and controls usable after resizing. Verify: Sample the flock at several moments to check coordinated movement and triangles pointing along their travel direction. Try the cursor interaction with available pointer actions, then pause and resume to check that the flock freezes and continues.
thinking
**Designing UI Elements** I'm focused on making the canvas triangles visible, with a top header and bottom overlay in mind. I need around 150 to be visible. For color hues, I'm considering subdued cyan with hints of pink. Maybe teal and cobalt could work well together. I should grab a screenshot once I have that all set up. Let’s get creative and see how it all comes together!
index.html (12447 bytes)Successfully wrote to index.html
thinking
{"action":"reload","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":[],"dom":"flock.\nA LIVING SIMULATION\nSIMULATION RUNNING\nAN EXPLORATION OF EMERGENCE\nTogether, in motion.\n\nSimple rules. Beautifully unpredictable patterns.\n\nMove your cursor to interact\n✦\n150\nBOIDS\n↗\n3 rules\nONE COLLECTIVE\nReset\nPause","images":"attached"}
thinking
{"action":"motion","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
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Frame 2, +568ms
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Frame 3, +1133ms
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Frame 4, +1701ms
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{"console":[],"dom":"flock.\nA LIVING SIMULATION\nSIMULATION RUNNING\nAN EXPLORATION OF EMERGENCE\nTogether, in motion.\n\nSimple rules. Beautifully unpredictable patterns.\n\nMove your cursor to interact\n✦\n150\nBOIDS\n↗\n3 rules\nONE COLLECTIVE\nReset\nPause","images":"attached"}
thinking
**Exploring pointer actions** I’m considering trying a pointer drag action. I think it involves using a browser action to click at a specific spot and then moving the pointer to create a dragging effect. This seems like a way to perform mouse movement, which could be interesting to test out. I want to ensure it’s fluid and works as intended. It’s all about getting the interaction just right!
{"action":"drag","x":500,"y":350,"toX":700,"toY":400,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":[],"dom":"flock.\nA LIVING SIMULATION\nSIMULATION RUNNING\nAN EXPLORATION OF EMERGENCE\nTogether, in motion.\n\nSimple rules. Beautifully unpredictable patterns.\n\nMove your cursor to interact\n✦\n150\nBOIDS\n↗\n3 rules\nONE COLLECTIVE\nReset\nPause","images":"attached"}
thinking
{"action":"click","x":1106,"y":749,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
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{"console":[],"dom":"flock.\nA LIVING SIMULATION\nSIMULATION PAUSED\nAN EXPLORATION OF EMERGENCE\nTogether, in motion.\n\nSimple rules. Beautifully unpredictable patterns.\n\nMove your cursor to interact\n✦\n150\nBOIDS\n↗\n3 rules\nONE COLLECTIVE\nReset\nResume","images":"attached"}
{"action":"motion","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
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Frame 2, +556ms
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Frame 3, +1127ms
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Frame 4, +1689ms
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{"console":[],"dom":"flock.\nA LIVING SIMULATION\nSIMULATION PAUSED\nAN EXPLORATION OF EMERGENCE\nTogether, in motion.\n\nSimple rules. Beautifully unpredictable patterns.\n\nMove your cursor to interact\n✦\n150\nBOIDS\n↗\n3 rules\nONE COLLECTIVE\nReset\nResume","images":"attached"}
thinking
{"action":"click","x":1106,"y":749,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":[],"dom":"flock.\nA LIVING SIMULATION\nSIMULATION RUNNING\nAN EXPLORATION OF EMERGENCE\nTogether, in motion.\n\nSimple rules. Beautifully unpredictable patterns.\n\nMove your cursor to interact\n✦\n150\nBOIDS\n↗\n3 rules\nONE COLLECTIVE\nReset\nPause","images":"attached"}
{"action":"click","x":1000,"y":749,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":[],"dom":"flock.\nA LIVING SIMULATION\nSIMULATION RUNNING\nAN EXPLORATION OF EMERGENCE\nTogether, in motion.\n\nSimple rules. Beautifully unpredictable patterns.\n\nMove your cursor to interact\n✦\n150\nBOIDS\n↗\n3 rules\nONE COLLECTIVE\nReset\nPause","images":"attached"}
thinking
**Verifying screenshot functionality** I need to check if the pointer is visible when I click and maybe try dragging a screenshot after adding a circle around the pointer. It seems important to ensure that the pointer remains clear in the screenshot for better visibility. Let’s see how that works — I might need to experiment with different settings or tools, but I really want to get this right!
{"action":"drag","x":400,"y":300,"toX":600,"toY":400,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":[],"dom":"flock.\nA LIVING SIMULATION\nSIMULATION RUNNING\nAN EXPLORATION OF EMERGENCE\nTogether, in motion.\n\nSimple rules. Beautifully unpredictable patterns.\n\nMove your cursor to interact\n✦\n150\nBOIDS\n↗\n3 rules\nONE COLLECTIVE\nReset\nPause","images":"attached"}
thinking
Created `index.html`. Checked flock motion, pointer interaction, pause/resume, and reset in the browser. The console showed no errors. Resizing was not directly tested.