Boids flocking · mistral-large-4-0
Output saved · Stopped by an API error Cost / run $0.0984 Runtime 157.8s
A model request failed and its retries ran out. The output is the HTML saved before that.
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 · 28 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.
/tmp/job-jjpXTX/index.html (9134 bytes)Successfully wrote to /tmp/job-jjpXTX/index.html
{"action":"inspect"}Frame 1, +1ms
[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":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}
{"action":"motion"}{"action":"screenshot"}Frame 1, +0ms
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Frame 2, +560ms
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Frame 3, +1119ms
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Frame 4, +1675ms
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{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}
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":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}
The flock is forming coordinated groups with triangles pointing along travel direction. Now let me test cursor interaction, pause/resume, and reset.
{"action":"drag","x":600,"y":400,"toX":600,"toY":400}{"action":"screenshot"}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":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}
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":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}
Cursor influence ring is visible and boids are scattered away from the pointer center. Now let me test pause/resume and reset.
{"action":"click","x":183,"y":47}{"action":"motion"}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":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}
Frame 1, +0ms
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Frame 2, +549ms
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Frame 3, +1099ms
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Frame 4, +1648ms
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{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}
The button still says "Pause" — the click may not have registered on the button, or the DOM snapshot is stale. The boids are still moving (positions changed across frames), so pause didn't take effect. Let me click the Pause button again and verify.
{"action":"click","x":183,"y":47}{"action":"screenshot"}{"action":"motion"}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":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}
Frame 1, +0ms
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{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}
Frame 1, +0ms
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Frame 2, +551ms
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Frame 3, +1099ms
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Frame 4, +1646ms
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{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}
The button still shows "Pause" and boids are still moving. The click isn't registering on the button. The issue might be that the click coordinates are hitting the button but the event isn't firing, OR the button text isn't updating in the DOM snapshot. Let me check — the DOM snapshot shows "Pause" still. The boids are clearly moving between frames, so pause is NOT active. Wait — maybe the click IS toggling pause on then off (two clicks). I clicked twice total (once in the previous call, once now). So: first click → paused=true (button should say "Resume"), second click → paused=false (button says "Pause"). That would explain it! The two clicks toggled it twice. But the DOM snapshot after the first click still showed "Pause"... The DOM snapshot might be taken at a stale moment. Let me click once more and check carefully — click once, then screenshot, and compare boid positions across two screenshots to see if frozen.
{"action":"click","x":183,"y":47}{"action":"screenshot"}{"action":"screenshot"}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":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}
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":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}
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":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}
The button still says "Pause" and boids are still moving between the two screenshots. The click on the button is not toggling pause. The DOM snapshot consistently shows "Pause" text. Wait — I've now clicked 3 times total on the pause button. If clicks were registering, the state would be: click1=paused, click2=resumed, click3=paused. The button should say "Resume" now if paused. But it says "Pause" and boids move. So clicks are NOT registering on the button at all. Why? The button is at approximately x=183, y=47 based on the screenshot (the "Pause" button is at around x=155-210, y=30-65). Let me look more carefully. In the 1200x800 viewport screenshot, the HUD is at top-left. "Boids: 150" text, then "Pause" button, then "Reset" button. The Pause button appears to be around x=155-210, y=30-65. So x=183, y=47 should be right on it. Hmm, but maybe the click is being intercepted. Actually, wait — maybe the issue is that the browser tool's click is dispatching a pointer event that my `pointerdown` handler picks up, but the button click should still work via normal click event. Actually, let me reconsider. Maybe the clicks ARE working but toggling rapidly. No — three clicks = odd = paused. But boids move. Let me try a different approach: use keyboard (Space) to pause, which I wired up. Or let me verify by checking if maybe there's an issue with the button. Let me try clicking with a type action or use the keyboard. Actually, let me reconsider the coordinates. The screenshot is 1200x800 but the actual rendered image might be scaled. The HUD "Pause" button — let me estimate from the image. The image shows the HUD box starting at top-left ~12px. "Boids: 150" then Pause button. In the image (which is 1200 wide as displayed), the Pause button center looks to be around x=183, y=47. That seems right. Let me try using the keyboard space bar to test pause, and also try clicking reset. Let me also try clicking at slightly different coordinates. Actually, let me try the `type` action with space, or `key` action. Let me test with keyboard: press Space to pause.
{"action":"key","key":"Space"}{"action":"screenshot"}{"action":"screenshot"}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":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}
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":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}
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":"Boids: 150\nPause\nReset\nMove the pointer to scatter the flock · boids steer away within a 140px radius","images":"attached"}