Conway's Game of Life · deepseek-v4-flash
Run Conway's Game of Life on a full-screen canvas grid with click-and-drag to toggle cells, plus play/pause, step, randomize, and clear controls.
transcript · 6 messages
Run Conway's Game of Life on a full-screen canvas grid with click-and-drag to toggle cells, plus play/pause, step, randomize, and clear controls.
thinking
The user wants me to build a single-page web app implementing Conway's Game of Life with: - Full-screen canvas grid - Click-and-drag to toggle cells - Play/pause, step, randomize, and clear controls - All in one self-contained index.html file Let me build this out completely.
/workspace/index.html (11976 bytes)Successfully wrote 11976 bytes to /workspace/index.html
thinking
Let me verify the file was written correctly by checking it exists and has the right structure.
Let me verify it's valid
{"command":"wc -l /workspace/index.html && head -3 /workspace/index.html && echo \"---\" && tail -5 /workspace/index.html"}488 /workspace/index.html <!DOCTYPE html> <html lang="en"> <head> --- init(); })(); </script> </body> </html>
thinking
The file is written correctly. Let me summarize what was built.
The file is ready at `/workspace/index.html` (488 lines, one self-contained file). Here's what it includes: **Conway's Game of Life** — full-screen, click-and-drag enabled, with: - **Full-screen canvas** that auto-resizes with the window, using a pixelated rendering style with a dark theme - **Grid system** — cells drawn as blue squares with subtle grid lines; toroidal wrap-around (cells on edges connect to opposite edges) - **Click & drag** — `pointerdown`, `pointermove`, `pointerup` handlers let you paint alive or dead cells by dragging; the paint mode is determined by the first cell you click (toggle its state, then drag to apply the same state) - **Controls** (top toolbar): - **Play/Pause** — toggles the simulation timer; shows green "active" state when playing - **Step** — advances one generation (disabled description during play, but enabled via keyboard) - **Random** — fills ~25% of cells randomly - **Clear** — kills all cells, resets generation counter - **Speed slider** — maps 1–20 to ~500ms down to ~20ms per frame - **Status bar** — shows population count, hovered cell coordinates & state, and keyboard shortcuts - **Keyboard shortcuts**: `Space` = play/pause, `S` = step, `R` = randomize, `C` = clear - **No external dependencies** — zero network requests, pure CSS/JS inline
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
Game of Life simulation runs continuously with evolving patterns, controls visible; click/drag/wheel toggle cells and affect population.
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.