Conway's Game of Life · qwen3-coder-next

Output generated Cost / run $0.4902 Runtime 644.2s

Prompt for this run

Build Conway's Game of Life on a canvas with a 60 by 40 grid and finite, non-wrapping boundaries. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. No third-party libraries are provided. Required behavior: - Apply the standard rules simultaneously: a live cell survives with two or three live neighbors, and a dead cell becomes live with exactly three. Treat cells outside the grid as dead. - Start paused with a visible blinker pattern. Provide Play/Pause, Step, Randomize, and Clear, plus a generation counter. - While paused, clicking toggles a cell. On a drag, choose painting alive or dead from the first cell and apply that same state to each visited cell, without repeatedly toggling it. - Step advances exactly one generation while paused. Randomize and Clear leave the simulation paused and reset the generation counter; Clear removes all live cells. - Fit the grid and controls within the viewport while keeping cells distinguishable. Verify: Step the initial blinker twice and compare its alternating arrangements. Paint a short stroke while paused and check consistent cell painting, then use Clear and confirm the grid and generation counter reset.

⛨ sandboxed Open in new tab ↗

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

modelqwen3-coder-next

vendorQwen

harnesspi 0.87.1 · browser iteration

generated2026-10-16

METRICS

runtime644.2s

tokens in6693k

tokens out18k

cached6542k

cost / run$0.4902

Transcript · 614 messages

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→ write /tmp/job-RLPYGj/index.html (9778 bytes)

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Successfully wrote to /tmp/job-RLPYGj/index.html

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{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"Conway's Game of Life\nPlay\nStep\nRandomize\nClear\nGeneration: 0","images":"model does not support images"}

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10 minutes have elapsed. At most 5 minutes remain. Finalize the output as soon as possible: save index.html now, fix only essential issues, and finish.

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→ read {"path":"/tmp/job-RLPYGj/index.html"}

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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Conway's Game of Life</title> <style> * { box-sizing: border-box; margin: 0; padding: 0; } body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: #1a1a2e; color: #eee; display: flex; flex-direction: column; align-items: center; min-height: 100vh; padding: 20px; } h1 { margin-bottom: 15px; font-size: 1.5rem; } .controls { display: flex; gap: 10px; margin-bottom: 15px; flex-wrap: wrap; justify-content: center; } button { padding: 10px 20px; font-size: 14px; cursor: pointer; background: #4a4a6a; color: #fff; border: none; border-radius: 4px; transition: background 0.2s; } button:hover { background: #6a6a8a; } button:active { background: #7a7a9a; } .generation-counter { font-size: 1.2rem; margin-bottom: 15px; } .canvas-container { box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5); border: 2px solid #4a4a6a; } canvas { display: block; cursor: crosshair; } </style> </head> <body> <h1>Conway's Game of Life</h1> <div class="controls"> <button id="playPauseBtn">Play</button> <button id="stepBtn">Step</button> <button id="randomizeBtn">Randomize</button> <button id="clearBtn">Clear</button> </div> <div class="generation-counter">Generation: <span id="genCounter">0</span></div> <div class="canvas-container"> <canvas id="gameCanvas"></canvas> </div> <script> // Grid configuration const COLS = 60; const ROWS = 40; const CELL_SIZE = 12; // Canvas setup const canvas = document.getElementById('gameCanvas'); const ctx = canvas.getContext('2d'); canvas.width = COLS * CELL_SIZE; canvas.height = ROWS * CELL_SIZE; // Game state let grid = createEmptyGrid(); let nextGrid = createEmptyGrid(); let isPlaying = false; let generation = 0; let animationId = null; // Drag painting state let isDragging = false; let paintState = null; // true for alive, false for dead, null if not painting // DOM elements const playPauseBtn = document.getElementById('playPauseBtn'); const stepBtn = document.getElementById('stepBtn'); const randomizeBtn = document.getElementById('randomizeBtn'); const clearBtn = document.getElementById('clearBtn'); const genCounter = document.getElementById('genCounter'); // Initialize with blinker pattern function initBlinker() { grid = createEmptyGrid(); generation = 0; updateGenerationCounter(); // Horizontal blinker in the center const centerX = Math.floor(COLS / 2); const centerY = Math.floor(ROWS / 2); grid[centerX - 1][centerY] = true; grid[centerX][centerY] = true; grid[centerX + 1][centerY] = true; draw(); } function createEmptyGrid() { return Array.from({ length: COLS }, () => Array(ROWS).fill(false)); } function draw() { ctx.fillStyle = '#1a1a2e'; ctx.fillRect(0, 0, canvas.width, canvas.height); ctx.fillStyle = '#4a90e2'; for (let x = 0; x < COLS; x++) { for (let y = 0; y < ROWS; y++) { if (grid[x][y]) { ctx.fillRect( x * CELL_SIZE, y * CELL_SIZE, CELL_SIZE, CELL_SIZE ); // Draw cell borders ctx.strokeStyle = '#1a1a2e'; ctx.lineWidth = 0.5; ctx.strokeRect( x * CELL_SIZE, y * CELL_SIZE, CELL_SIZE, CELL_SIZE ); } } } } function countNeighbors(x, y) { let count = 0; for (let dx = -1; dx <= 1; dx++) { for (let dy = -1; dy <= 1; dy++) { if (dx === 0 && dy === 0) continue; const nx = x + dx; const ny = y + dy; // Finite boundaries: treat cells outside as dead if (nx >= 0 && nx < COLS && ny >= 0 && ny < ROWS) { if (grid[nx][ny]) count++; } } } return count; } function computeNextGeneration() { for (let x = 0; x < COLS; x++) { for (let y = 0; y < ROWS; y++) { const neighbors = countNeighbors(x, y); if (grid[x][y]) { // Live cell survives with 2 or 3 neighbors nextGrid[x][y] = neighbors === 2 || neighbors === 3; } else { // Dead cell becomes alive with exactly 3 neighbors nextGrid[x][y] = neighbors === 3; } } } // Swap grids const temp = grid; grid = nextGrid; nextGrid = createEmptyGrid(); generation++; updateGenerationCounter(); draw(); } function updateGenerationCounter() { genCounter.textContent = generation; } function togglePlay() { isPlaying = !isPlaying; playPauseBtn.textContent = isPlaying ? 'Pause' : 'Play'; if (isPlaying) { animationId = requestAnimationFrame(gameLoop); } else { cancelAnimationFrame(animationId); } } function gameLoop() { if (isPlaying) { computeNextGeneration(); animationId = requestAnimationFrame(gameLoop); } } // Mouse interaction function getGridCoordinates(e) { const rect = canvas.getBoundingClientRect(); const x = Math.floor((e.clientX - rect.left) / CELL_SIZE); const y = Math.floor((e.clientY - rect.top) / CELL_SIZE); return { x, y }; } function handleCellClick(e) { const { x, y } = getGridCoordinates(e); if (x >= 0 && x < COLS && y >= 0 && y < ROWS) { grid[x][y] = !grid[x][y]; draw(); } } function handleMouseDown(e) { isDragging = true; const { x, y } = getGridCoordinates(e); if (x >= 0 && x < COLS && y >= 0 && y < ROWS) { // Set paint state based on current cell state paintState = !grid[x][y]; grid[x][y] = paintState; draw(); } } function handleMouseUp() { isDragging = false; paintState = null; } function handleMouseMove(e) { if (isDragging && paintState !== null) { const { x, y } = getGridCoordinates(e); if (x >= 0 && x < COLS && y >= 0 && y < ROWS) { grid[x][y] = paintState; draw(); } } } // Event listeners playPauseBtn.addEventListener('click', togglePlay); stepBtn.addEventListener('click', () => { if (isPlaying) togglePlay(); computeNextGeneration(); }); randomizeBtn.addEventListener('click', () => { if (isPlaying) togglePlay(); grid = createEmptyGrid(); generation = 0; for (let x = 0; x < COLS; x++) { for (let y = 0; y < ROWS; y++) { grid[x][y] = Math.random() > 0.7; } } updateGenerationCounter(); draw(); }); clearBtn.addEventListener('click', () => { if (isPlaying) togglePlay(); grid = createEmptyGrid(); generation = 0; updateGenerationCounter(); draw(); }); canvas.addEventListener('mousedown', handleMouseDown); canvas.addEventListener('mouseup', handleMouseUp); canvas.addEventListener('click', (e) => { if (!isDragging) { handleCellClick(e); } }); canvas.addEventListener('mousemove', handleMouseMove); canvas.addEventListener('mouseleave', handleMouseUp); // Initialize initBlinker(); </script> </body> </html>

assistant

The file is complete and implements Conway's Game of Life with all required features: - 60×40 grid with finite non-wrapping boundaries - Standard Game of Life rules implemented - Blinker pattern initialized at center - Play/Pause, Step, Randomize, Clear buttons - Generation counter - Click to toggle while paused - Drag painting with consistent state application - Clear resets both grid and generation counter

→ write /tmp/job-RLPYGj/index.html (9778 bytes)

toolResult

Successfully wrote to /tmp/job-RLPYGj/index.html

assistant

Done. The `index.html` file has been saved to `/tmp/job-RLPYGj/index.html`. The implementation includes: - 60×40 grid with finite (non-wrapping) boundaries - Standard Game of Life rules (live cell survives with 2-3 neighbors, dead cell becomes alive with exactly 3) - Blinker pattern initialized at center - Play/Pause, Step, Randomize, and Clear buttons - Generation counter that resets on Clear and Randomize - While paused: click toggles cells, drag paints consistent state - Clear resets both grid and generation counter