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Bouncing balls in a heptagon · minimax-m2.5

Show 20 numbered balls (1 to 20) dropping from the center of a heptagon that spins 360 degrees every 5 seconds. The balls are affected by gravity and friction, collide with each other, and bounce realistically off the rotating walls; show each ball's spin via the rotation of its number. Implement all collision detection yourself.

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transcript · 6 messages
user

Show 20 numbered balls (1 to 20) dropping from the center of a heptagon that spins 360 degrees every 5 seconds. The balls are affected by gravity and friction, collide with each other, and bounce realistically off the rotating walls; show each ball's spin via the rotation of its number. Implement all collision detection yourself.

assistant
thinking
The user wants a complex physics simulation with:
1. A heptagon (7-sided polygon) that rotates 360° every 5 seconds
2. 20 numbered balls (1-20) that drop from the center
3. Gravity and friction affecting the balls
4. Ball-to-ball collisions
5. Ball-to-wall collisions with the rotating heptagon walls
6. Each ball shows its spin via rotating number

I need to implement all collision detection myself - no external physics libraries.

Let me create a single HTML file with all this functionality.
write /tmp/ws/index.html (11848 bytes)
toolResult

Successfully wrote 11848 bytes to /tmp/ws/index.html

assistant
thinking
I've created the HTML file. Let me verify it exists and then provide a summary to the user.
bash {"command":"ls -la /tmp/ws/index.html"}
toolResult

-rw-r--r--. 1 node node 11848 Aug 1 17:39 /tmp/ws/index.html

assistant
thinking
The file has been created successfully. Let me provide a summary to the user.

Created `/tmp/ws/index.html` - a self-contained physics simulation featuring: - **Spinning Heptagon**: 7-sided polygon rotating 360° every 5 seconds - **20 Numbered Balls** (1-20): Drop from center with random initial velocities - **Physics Features**: - Gravity pulling balls downward - Air friction slowing all movement - Ball-to-ball collision detection with momentum transfer - Ball-to-wall collisions with the rotating heptagon walls (accounting for wall velocity) - Bounce coefficient for realistic energy loss - **Visual Effects**: - Each ball shows its number rotating based on angular velocity - Gradient shading on balls for 3D appearance - Glowing heptagon outline - Ball spin visualized through rotating numbers All collision detection is implemented from scratch - no external physics libraries used.

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

modelminimax-m2.5
vendorMiniMax
harnesspi-agent
generated2026-08-01

EVALUATION

4/5 working

Heptagon spins with 20 numbered balls settling under gravity, bouncing off rotating walls; no visible reaction to input beyond animation continuing.

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 motion9.6%
on click9.6%
on drag9.0%
on wheel9.4%
on enter + space9.5%
on arrow keys9.8%
on w/a/s/d9.1%
frame spread20.2 / 255
console errors0
js errors none

METRICS

runtime93.3s
tokens in11k
tokens out3.3k
cached11k
cost / run$0.0035