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Fireworks · glm-4.5-air

Create a fireworks display on a full-screen canvas where clicks launch shells that explode into gravity-affected, fading particle bursts.

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transcript · 4 messages
user

Create a fireworks display on a full-screen canvas where clicks launch shells that explode into gravity-affected, fading particle bursts.

assistant
thinking
The user wants me to create a single-page web app with a fireworks display. The requirements are:

1. Full-screen canvas
2. Clicks launch shells
3. Shells explode into gravity-affected particle bursts
4. Particles should fade
5. Everything in one self-contained HTML file
6. No external resources or network requests
7. CSS in <style> tag, JS in <script> tag

I need to create an HTML file with:
- HTML structure with a full-screen canvas
- CSS for styling and making canvas full-screen
- JavaScript for:
  - Canvas setup and full-screen handling
  - Mouse click event handling
  - Firework shell physics (launching upward)
  - Explosion particle system with gravity
  - Fading effects
  - Animation loop

Let me structure this:
1. HTML with canvas element
2. CSS for full-screen canvas and basic styling
3. JavaScript for the fireworks simulation

For the fireworks physics:
- Shells launch from bottom where clicked, go upward with some velocity
- At peak height, explode into particles
- Particles affected by gravity (downward acceleration)
- Particles fade over time
- Use requestAnimationFrame for smooth animation

I'll create a fireworks display web app for you. This will be a single HTML file with a full-screen canvas where clicking launches fireworks shells that explode into gravity-affected particle bursts.

write /tmp/ws/index.html (8093 bytes)
toolResult

Successfully wrote 8093 bytes to /tmp/ws/index.html

assistant
thinking
I've successfully created a fireworks display web app in a single HTML file. The app includes:

1. **Full-screen canvas** that automatically resizes with the window
2. **Click interaction** - clicking anywhere launches a firework from the bottom to that position
3. **Realistic physics**:
   - Firework shells launch upward with initial velocity
   - Gravity affects both shells and particles
   - Shells explode at peak height or when velocity becomes positive
4. **Particle effects**:
   - Each explosion creates 50-100 particles
   - Particles have gravity, friction, and fade over time
   - Both shells and particles leave fading trails
5. **Visual features**:
   - Gradient night sky background
   - Multiple random colors for variety
   - Semi-transparent fade effect for smooth animation
   - Auto-launching fireworks for continuous display
6. **Complete self-containment**:
   - All CSS in <style> tag
   - All JavaScript in <script> tag
   - No external dependencies or network requests

The file is now ready at `/tmp/ws/index.html` and can be opened in any web browser to enjoy the fireworks display!

I've created a complete fireworks display web app in `index.html`. The app features: - **Full-screen canvas** with automatic resizing - **Click-to-launch** fireworks from the bottom to your click position - **Realistic physics** with gravity-affected particle explosions - **Beautiful visual effects** including: - Fading trails for both shells and particles - Multiple random colors for variety - Smooth fade effects instead of harsh clearing - Auto-launching fireworks for continuous display Open `index.html` in any web browser to start clicking and launching fireworks! The app runs completely sandboxed with no external dependencies.

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

modelglm-4.5-air
vendorZ.ai · GLM
harnesspi-agent
generated2026-08-01

EVALUATION

4/5 working

Clicking, dragging, wheel, enter/space, and WASD all launch colorful fireworks with fading particle bursts and gravity trails over a dark sky.

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.

idle motion0.1%
on click3.7%
on drag1.4%
on wheel1.3%
on enter + space1.3%
on arrow keys0.2%
on w/a/s/d3.1%
frame spread14.6 / 255
console errors0
js errors none

METRICS

runtime29.2s
tokens in4.9k
tokens out2.4k
cached4.9k
cost / run$0.0021