Boids flocking · qwen3.5-flash-02-23
Create a full-screen flocking simulation of boids using separation, alignment, and cohesion, drawn as oriented triangles that steer smoothly and flee from the mouse cursor.
transcript · 6 messages
Create a full-screen flocking simulation of boids using separation, alignment, and cohesion, drawn as oriented triangles that steer smoothly and flee from the mouse cursor.
thinking
The user wants me to create a boids flocking simulation as a single self-contained HTML file. This needs to include: 1. CSS for full-screen styling 2. JavaScript implementing boids algorithms with: - Separation (avoid crowding neighbors) - Alignment (steer towards average heading of neighbors) - Cohesion (steer towards average position of neighbors) 3. Boids drawn as oriented triangles 4. Smooth steering/acceleration 5. Mouse interaction (boids flee from cursor) 6. Everything in one index.html file with inline CSS and JS Let me write this complete implementation:
/tmp/ws/index.html (8360 bytes)Successfully wrote 8360 bytes to /tmp/ws/index.html
thinking
The file has been created. Let me verify it exists and is readable.
{"command":"ls -la /tmp/ws/index.html && head -20 /tmp/ws/index.html"}-rw-r--r--. 1 node node 8362 Aug 1 17:32 /tmp/ws/index.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Boids Flocking Simulation</title> <style> * { margin: 0; padding: 0; box-sizing: border-box; } html, body { width: 100%; height: 100%; overflow: hidden; background: #0a0a15; } canvas { display: block;
thinking
Done! I've created `/tmp/ws/index.html` — a self-contained full-screen flocking simulation with: - **315 boids** rendered as oriented triangles with subtle color variations - **Separation**: Boids steer away from nearby neighbors to avoid crowding - **Alignment**: Boids steer toward the average heading of nearby neighbors - **Cohesion**: Boids steer toward the average position of nearby neighbors - **Mouse flee**: Boids panic and flee when mouse enters their vicinity (200px radius) - **Smooth steering**: Physics-based movement with velocity, acceleration, and force limiting - **Edge wrapping**: Boids wrap around screen edges instead of disappearing - **Trail effect**: Previous frame fades slightly for visual motion trails To view it, open `index.html` in a browser. Move your mouse to scatter the flock and click to respawn them!
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
EVALUATION
Boids flock and drift as colored triangles across the screen; continuous idle animation but no clear distinct reaction to inputs shown.
Vision grade · anthropic/claude-sonnet-5
MEASUREMENTS
Raw readings from the capture, not a verdict — the grade above is the only judgement. Percentages are how much of the screen changed; the measure under-reports sparse motion on a dark background.