Boids flocking · qwen3.5-plus-02-15
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 · 4 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 single-page web app with a flocking simulation (boids algorithm). I need to implement: 1. Boids with three main rules: separation, alignment, and cohesion 2. Draw boids as oriented triangles 3. Smooth steering behavior 4. Flee from mouse cursor 5. Full-screen canvas 6. All in one self-contained index.html file with inline CSS and JS Let me create this file with the classic boids algorithm implementation.
/tmp/ws/index.html (11547 bytes)Successfully wrote 11547 bytes to /tmp/ws/index.html
thinking
Done!
Done! I've created `/tmp/ws/index.html` - a full-screen boids flocking simulation with: - **200 boids** drawn as oriented triangles - **Three flocking behaviors**: separation (avoid crowding), alignment (match direction), and cohesion (stay together) - **Mouse flee behavior** - boids scatter when the cursor gets close (with a visible radius indicator) - **Smooth steering** using Reynolds' steering behaviors with force limiting - **Color-coded by speed** - faster boids shift toward cyan - **Wrap-around edges** - boids that exit one side appear on the opposite - **Motion trails** from the semi-transparent background clear Open the file in a browser to see the simulation in action. Move your mouse around to watch the boids flee!
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 steer smoothly as triangles, visibly avoiding the mouse cursor circle, animates continuously.
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.