Boids flocking · hy3-preview
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 a full-screen flocking simulation (boids) with: 1. Separation, alignment, and cohesion behaviors 2. Boids drawn as oriented triangles 3. Smooth steering 4. Mouse cursor avoidance (fleeing) 5. Single self-contained index.html file with no external resources I'll create a complete HTML file with: - Canvas setup for full-screen - Boid class with position, velocity, acceleration - Flocking behaviors (separation, alignment, cohesion) - Mouse interaction (fleeing) - Smooth steering using vector math - Oriented triangle rendering - Animation loop Let me write this as a single HTML file with inline CSS and JS
I'll create a full-screen boid flocking simulation with all the requested features. Let me build this as a single self-contained HTML file.
/workspace/index.html (11217 bytes)Successfully wrote 11217 bytes to /workspace/index.html
thinking
The user has asked me to create a full-screen flocking simulation of boids. I've just created the index.html file. Let me verify it was created correctly by reading it back, and then I should provide a summary of what was built. Let me check if the file exists and maybe verify the content is correct.
I've created a full-screen boids flocking simulation with all the features you requested. Let me verify it's working correctly:
{"command":"ls -la /workspace/index.html && wc -l /workspace/index.html"}-rw-r--r-- 1 node node 11217 Jul 22 16:47 /workspace/index.html 358 /workspace/index.html
thinking
The user just sent an empty message with some thinking tags. This might be an error or they might be waiting for me to respond. Since I just created the boids simulation file, I should provide a summary of what was created and maybe offer to help with any modifications or answer questions about the implementation. Let me provide a helpful response about what was built.
The boids flocking simulation has been created successfully! Here's what's included in `index.html`: **Features implemented:** - **Separation**: Boids steer to avoid crowding neighbors (weight: 1.8x) - **Alignment**: Boids steer to match velocity of neighbors (weight: 1.0x) - **Cohesion**: Boids steer to move toward center of neighbors (weight: 1.0x) - **Mouse fleeing**: Boids flee from mouse cursor within 150px radius (weight: 2.5x) - **Oriented triangles**: Each boid is drawn as a glowing triangle pointing in movement direction - **Smooth steering**: Force limits and gradual acceleration for fluid motion - **Full-screen**: Canvas auto-resizes to fill the window - **Visual effects**: Glow effects on boids, trail fade effect, mouse influence radius indicator **Technical details:** - 150 boids with cyan/green color variation - Wrap-around edges for infinite space feel - No external dependencies - runs fully offline - Real-time vector math for all steering behaviors To view it, open `/workspace/index.html` in a browser. Move your mouse over the canvas to see the boids scatter away!
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
Glowing boid triangles flock cohesively and scatter smoothly from the cursor's red circle on all inputs.
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.