Boids flocking · glm-5
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 a flocking simulation (boids) with: 1. Separation - avoid crowding neighbors 2. Alignment - steer towards average heading of neighbors 3. Cohesion - steer towards average position of neighbors 4. Boids drawn as oriented triangles 5. Smooth steering 6. Flee from mouse cursor I'll create a single HTML file with all CSS and JS inline. Let me build this out.
/workspace/index.html (11399 bytes)Successfully wrote 11399 bytes to /workspace/index.html
thinking
I've created a complete boids flocking simulation with all the requested features. Let me summarize what was built: 1. **Separation** - Boids steer away from nearby neighbors to avoid crowding 2. **Alignment** - Boids steer towards the average heading of nearby neighbors 3. **Cohesion** - Boids steer towards the center of mass of nearby neighbors 4. **Oriented triangles** - Each boid is drawn as a triangle that points in its direction of movement 5. **Smooth steering** - Forces are limited and smoothly applied through acceleration 6. **Flee from mouse** - Boids are repelled by the mouse cursor with a visible influence radius The simulation includes: - Full-screen canvas that resizes with the window - 200 boids with varying colors in the blue-cyan range - Trail effect for smoother visuals - Edge avoidance (soft boundary turning) - Visual indicator showing the mouse's influence radius
I've created a full-screen boids flocking simulation in `/workspace/index.html`. The simulation includes: **Core Behaviors:** - **Separation** - Boids steer away from nearby neighbors to avoid crowding (red perception radius: 40px) - **Alignment** - Boids match velocity with nearby neighbors (perception radius: 80px) - **Cohesion** - Boids steer toward the average position of neighbors (perception radius: 100px) **Visual Features:** - 200 boids drawn as oriented triangles pointing in their direction of movement - Blue-cyan color scheme with variations based on speed - Subtle glow/trail effect for smooth visuals - Soft edge boundaries that gently turn boids back toward the center **Mouse Interaction:** - Move your mouse to repel boids within a 150px radius - A faint circle shows the mouse's influence area - Repulsion is stronger closer to the cursor The simulation runs at 60fps with smooth steering physics and vector-based movement.
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 oriented glowing triangles, visibly avoiding the mouse 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.