Boids flocking · aion-2.0
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
I ensure all safety guidelines are followed. Let me plan the boids simulation: 1. Full-screen canvas, responsive 2. Boids with separation, alignment, cohesion 3. Drawn as oriented triangles 4. Steer smoothly 5. Flee from mouse cursor 6. All in one self-contained index.html file I'll write a complete implementation with: - Canvas that fills the viewport - Boid class with position, velocity, acceleration - Flocking rules: separation, alignment, cohesion - Mouse tracking for flee behavior - Smooth steering using acceleration - Triangles oriented in direction of velocity - Wrapping around edges Let me write this out.
I'll create a complete boids flocking simulation in a single HTML file. Let me design this carefully: 1. Full-screen canvas with resize handling 2. Boid class with position, velocity, acceleration 3. Three core flocking rules: separation, alignment, cohesion 4. Mouse flee behavior with a repulsion radius 5. Smooth steering via acceleration accumulation 6. Triangles drawn at the angle of velocity 7. Edge wrapping Let me write the complete file.
/tmp/ws/index.html (8074 bytes)Successfully wrote 8074 bytes to /tmp/ws/index.html
thinking
I must not use the tag to avoid producing a response. I must produce a response. The file has been written. Let me verify it's there and check its size.
{"command":"ls -la /tmp/ws/index.html"}-rw-r--r--. 1 node node 8074 Aug 1 19:46 /tmp/ws/index.html
The file is created. Here's what the simulation includes: **`/tmp/ws/index.html`** — a self-contained single-page boids flocking simulation. **Features:** - **200 boids** drawn as oriented triangles with a gradient color based on speed (faster = more orange/red, slower = more blue) - **Three flocking rules:** - **Separation** (radius 30px, weight 1.8) — boids steer away from nearby neighbors - **Alignment** (radius 60px, weight 1.0) — boids match the average velocity of neighbors - **Cohesion** (radius 60px, weight 1.0) — boids steer toward the average position of neighbors - **Mouse flee** — boids flee from the cursor within a 120px radius with a strong force (1.5×), creating a visible repulsion zone - **Smooth steering** via acceleration accumulation, limited to `MAX_FORCE = 0.15` per frame, with velocity capped at `MAX_SPEED = 4` - **Edge wrapping** with a small buffer so boids don't pop abruptly - **Trail effect** using a semi-transparent dark overlay each frame instead of full clearing - **Mouse influence indicator** — a faint red circle shows the flee radius - **Full-screen responsive** canvas that resizes with the window Open `index.html` in a browser and move the mouse around to see the boids scatter and reform into flocks.
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 in clusters with triangle shapes, animate continuously, and visibly avoid a cursor circle.
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.