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Fluid simulation · inkling-small

Create a real-time fluid simulation on a full-screen canvas where dragging the mouse pushes swirling colored dye through the fluid.

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transcript · 6 messages
user

Create a real-time fluid simulation on a full-screen canvas where dragging the mouse pushes swirling colored dye through the fluid.

assistant
thinking
The user wants a single-file self-contained fluid simulation. I'll create an index.html with a full-screen canvas, WebGL-based or 2D canvas fluid simulation using the classic Jos Stam-style approach with dye advection and diffusion via a grid. I'll make it mouse-interactive with swirling colored dye.
write /tmp/ws/index.html (6816 bytes)
toolResult

Successfully wrote 6816 bytes to /tmp/ws/index.html

assistant
thinking
Done. Confirm file exists.
bash {"command":"ls -la /tmp/ws/index.html"}
toolResult

-rw-r--r--. 1 node node 6816 Aug 1 20:01 /tmp/ws/index.html

assistant
thinking
File created successfully. Provide brief explanation.

Created `/tmp/ws/index.html`. Full-screen canvas fluid simulation using a128×128 velocity/density grid with diffusion, projection, and advection. Dragging injects velocity and colored dye that swirls through the field with HSV-style coloring based on flow angle. All self-contained, no external resources.

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

modelinkling-small
vendorThinking Machines
harnesspi-agent
generated2026-08-01

EVALUATION

3/5 working

Fluid dye simulation renders and reacts to dragging with colorful swirls; click and idle produce no change.

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 motion0.0%
on click0.0%
on drag30.0%
on wheel16.5%
on enter + space8.8%
on arrow keys3.4%
on w/a/s/d1.3%
frame spread36.1 / 255
console errors0
js errors none

METRICS

runtime17.4s
tokens in9.6k
tokens out2.9k
cached6.5k
cost / run$0.0107