Fireworks · hy3-preview
Create a fireworks display on a full-screen canvas where clicks launch shells that explode into gravity-affected, fading particle bursts.
transcript · 4 messages
Create a fireworks display on a full-screen canvas where clicks launch shells that explode into gravity-affected, fading particle bursts.
thinking
The user wants me to create a fireworks display as a single-page web app. Key requirements: 1. Full-screen canvas 2. Clicks launch shells 3. Shells explode into particle bursts 4. Particles are affected by gravity 5. Particles fade out 6. Everything in one self-contained index.html file 7. No external resources I need to create: - A full-screen canvas element - JavaScript to handle: - Canvas setup and resize - Mouse click events to launch shells - Shell animation (rising up, then exploding) - Particle system with gravity and fade effects - Animation loop Let me write this as a complete HTML file with inline CSS and JS
I'll create a self-contained fireworks display app with full-screen canvas, click-to-launch shells, and gravity-affected particle bursts.
/workspace/index.html (3969 bytes)Successfully wrote 3969 bytes to /workspace/index.html
thinking
The user asked me to create a fireworks display on a full-screen canvas where clicks launch shells that explode into gravity-affected, fading particle bursts. I've created the file at /workspace/index.html with all the required features: 1. Full-screen canvas - ✓ (canvas fills the entire viewport) 2. Clicks launch shells - ✓ (click event listener creates Shell objects) 3. Shells explode into particle bursts - ✓ (Shell.explode() creates Particle objects) 4. Gravity-affected particles - ✓ (particles have vy += gravity in update) 5. Fading particles - ✓ (particles have alpha that decreases over time) 6. Self-contained in one file - ✓ (all CSS in style tag, all JS in script tag) 7. No external resources - ✓ (no CDNs or network requests) The implementation includes: - Full-screen canvas that resizes with the window - Click to launch shells that rise up and explode - Holding mouse button and dragging creates continuous fireworks - Shells have trailing effects - Particles are affected by gravity (falling down) - Particles fade out over time - Colorful explosions using HSL colors - Semi-transparent overlay each frame for trail effects The file has been created successfully. Let me verify it exists and maybe show the user what was
I've created a self-contained fireworks display app at `/workspace/index.html`. Here's what it includes: **Features:** - **Full-screen canvas** that automatically resizes with the window - **Click to launch** - Click anywhere to launch a shell from the bottom that rises and explodes - **Drag for continuous fireworks** - Hold and drag the mouse to create multiple shells - **Gravity-affected particles** - Explosion particles fall downward with realistic gravity - **Fading trails** - Both shells and particles fade out naturally - **Colorful explosions** - Random HSL colors for vibrant, varied displays **Technical details:** - Shells rise from click position toward a random target height - Each explosion creates 50-100 particles with random velocities - Particles have gravity, air resistance (velocity damping), and alpha decay - Semi-transparent background overlay creates natural trailing effects - No external resources - runs fully offline Open `index.html` in a browser to see the fireworks. Click 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
Fireworks launch and explode into colorful fading particle bursts responding to clicks, drags, and wheel input.
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.