Boids flocking · gemma-4-26b-a4b-it
Output saved · Stopped by an API error Cost / run $0.0007 Runtime 33.1s
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 · 5 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
The user wants a single-page web app (`index.html`) containing a flocking simulation (Boids algorithm) with the following requirements:
150 boids as oriented triangles.
Separation, Alignment, Cohesion.
Smooth movement (bounded speed and steering), wrapping around edges.
Boids steer away from the cursor (within a radius).
Pause/Resume, Reset.
Responsive full-screen canvas.
No external resources, CDNs, or libraries.
Plan:
1. Create `index.html` with:
* HTML structure: `canvas` and a control panel (Pause/Resume, Reset buttons).
* CSS: Full-screen canvas, overlaying control panel, styling for buttons.
* JavaScript:
* `Boid` class: position, velocity, acceleration, max speed, max force.
* Flocking logic:
* `separation(boids, radius)`
* `alignment(boids, radius)`
* `cohesion(boids, radius)`
* Interaction: Mouse position tracking for the cursor influence.
* Update loop: `requestAnimationFrame`.
* Edge handling: Wrapping.
* Rendering: Draw oriented triangles.
2. Test using `browser` tool.
Let's implement.index.html (8854 bytes)Successfully wrote to index.html
thinking
I have implemented the simulation. Now I need to verify it using the `browser` tool. I'll check: 1. Rendering: Are triangles drawn? 2. Flocking behavior: Do they form groups/align? 3. Interaction: Do they react to mouse movements? 4. Controls: Do Pause/Resume and Reset work? 5. Responsive: Does it handle resizing? Let's start by running it.