Conway's Game of Life · nova-2-lite-v1

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.

⛨ sandboxed Open in new tab ↗

transcript · 24 messages

user

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.

assistant

thinking

[REDACTED].

→ write index.html (19154 bytes)

toolResult

Successfully wrote 19154 bytes to index.html

assistant

thinking

[REDACTED].

→ edit

{"path":"index.html","edits":[{"oldText":"function pauseSimulation() {\n    isPlaying = false;\n    if (animationId) {\n        cancelAnimat

toolResult

Could not find the exact text in index.html. The old text must match exactly including all whitespace and newlines.

assistant

thinking

[REDACTED].

→ read {"path":"index.html"}

toolResult

<!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> * { margin: 0; padding: 0; box-sizing: border-box; } body { font-family: Arial, sans-serif; background: #1a1a2e; color: #e6e6e6; overflow: hidden; height: 100vh; display: flex; flex-direction: column; } .header { padding: 15px 20px; background: #16213e; border-bottom: 2px solid #0f3460; display: flex; justify-content: space-between; align-items: center; z-index: 10; } h1 { font-size: 1.8rem; font-weight: 600; } .controls { display: flex; gap: 10px; } button { padding: 8px 15px; border: none; border-radius: 4px; background: #0f3460; color: #e6e6e6; font-weight: 600; cursor: pointer; transition: all 0.2s ease; min-width: 80px; } button:hover { background: #1a4a7a; transform: translateY(-2px); } button:active { transform: translateY(0); } button.play { background: #2ecc71; } button.pause { background: #e74c3c; } #generation-counter { font-size: 1.2rem; background: rgba(15, 52, 96, 0.5); padding: 8px 15px; border-radius: 4px; min-width: 120px; text-align: center; } .main-content { display: flex; flex: 1; padding: 10px; gap: 10px; height: calc(100vh - 120px); } #game-canvas { flex: 1; background: #0d1930; border-radius: 8px; box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4); cursor: pointer; display: block; } .sidebar { width: 250px; background: #16213e; border-radius: 8px; padding: 20px; display: flex; flex-direction: column; gap: 20px; overflow-y: auto; box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3); } .panel { background: rgba(13, 25, 48, 0.7); border-radius: 8px; padding: 15px; } .panel h2 { font-size: 1.2rem; margin-bottom: 15px; color: #4ecdc4; border-bottom: 1px solid #0f3460; padding-bottom: 8px; } .settings { display: flex; flex-direction: column; gap: 12px; } label { display: flex; justify-content: space-between; font-size: 0.9rem; } input[type="range"] { width: 100%; margin: 5px 0; accent-color: #4ecdc4; } .cell-size-display { display: flex; justify-content: space-between; font-size: 0.9rem; color: #aaa; } .instructions { font-size: 0.9rem; line-height: 1.5; } .instructions ul { padding-left: 20px; margin-top: 10px; } .instructions li { margin-bottom: 8px; } footer { text-align: center; padding: 10px; background: #0d1930; font-size: 0.85rem; color: #aaa; border-top: 1px solid #0f3460; } @media (max-width: 768px) { .main-content { flex-direction: column; } .sidebar { width: 100%; max-height: 200px; } } </style> </head> <body> <div class="header"> <h1>Conway's Game of Life</h1> <div class="controls"> <button id="play-btn" class="play">Play</button> <button id="pause-btn" class="pause">Pause</button> <button id="step-btn">Step</button> <button id="random-btn">Random</button> <button id="clear-btn">Clear</button> </div> <div id="generation-counter">Gen: 0</div> </div> <div class="main-content"> <canvas id="game-canvas"></canvas> <div class="sidebar"> <div class="panel settings"> <h2>Settings</h2> <div class="settings"> <label> Cell Size <span id="cell-size-value">10</span> </label> <input type="range" id="cell-size" min="5" max="30" value="10" step="1"> <div class="cell-size-display"> <span>Small</span> <span>Large</span> </div> <label> Speed <span id="speed-value">Medium</span> </label> <input type="range" id="speed" min="1" max="10" value="5" step="1"> <div class="speed-display"> <span>Slow</span> <span>Fast</span> </div> </div> </div> <div class="panel instructions"> <h2>How to Play</h2> <div class="instructions"> <p>Conway's Game of Life is a cellular automaton with simple rules:</p> <ul> <li>A live cell with fewer than 2 live neighbors dies (underpopulation)</li> <li>A live cell with 2 or 3 live neighbors lives</li> <li>A live cell with more than 3 live neighbors dies (overcrowding)</li> <li>A dead cell with exactly 3 live neighbors becomes alive (reproduction)</li> </ul> <p><strong>Controls:</strong></p> <ul> <li>Click or drag to toggle cells</li> <li>Use buttons to control the simulation</li> <li>Adjust settings to change simulation behavior</li> </ul> </div> </div> </div> </div> <footer> Conway's Game of Life - A cellular automaton simulation </footer> <script> // Game of Life implementation document.addEventListener('DOMContentLoaded', () => { // Canvas setup const canvas = document.getElementById('game-canvas'); const ctx = canvas.getContext('2d'); // UI elements const playBtn = document.getElementById('play-btn'); const pauseBtn = document.getElementById('pause-btn'); const stepBtn = document.getElementById('step-btn'); const randomBtn = document.getElementById('random-btn'); const clearBtn = document.getElementById('clear-btn'); const genCounter = document.getElementById('generation-counter'); // Settings elements const cellSizeInput = document.getElementById('cell-size'); const cellSizeValue = document.getElementById('cell-size-value'); const speedInput = document.getElementById('speed'); const speedValue = document.getElementById('speed-value'); // Game state let grid = []; let nextGrid = []; let rows = 0; let cols = 0; let cellSize = parseInt(cellSizeInput.value); let isPlaying = false; let animationId = null; let generation = 0; // Mouse interaction state let isDragging = false; let dragStartX = 0; let dragStartY = 0; // Initialize game function init() { resizeCanvas(); createGrid(); randomize(); draw(); // Event listeners window.addEventListener('resize', resizeCanvas); canvas.addEventListener('mousedown', handleMouseDown); canvas.addEventListener('mousemove', handleMouseMove); canvas.addEventListener('mouseup', handleMouseUp); canvas.addEventListener('mouseleave', handleMouseUp); playBtn.addEventListener('click', startSimulation); pauseBtn.addEventListener('click', pauseSimulation); stepBtn.addEventListener('click', stepSimulation); randomBtn.addEventListener('click', randomize); clearBtn.addEventListener('click', clearGrid); cellSizeInput.addEventListener('input', updateCellSize); speedInput.addEventListener('input', updateSpeed); // Initial button states updateButtonStates(); } // Resize canvas to fit container function resizeCanvas() { canvas.width = canvas.clientWidth; canvas.height = canvas.clientHeight; createGrid(); draw(); } // Create grid based on current cell size function createGrid() { cellSize = parseInt(cellSizeInput.value); rows = Math.ceil(canvas.height / cellSize); cols = Math.ceil(canvas.width / cellSize); grid = Array(rows).fill().map(() => Array(cols).fill(false)); nextGrid = Array(rows).fill().map(() => Array(cols).fill(false)); generation = 0; genCounter.textContent = `Gen: ${generation}`; } // Update cell size and redraw function updateCellSize() { cellSizeValue.textContent = cellSizeInput.value; createGrid(); draw(); } // Update simulation speed function updateSpeed() { const speedValues = ['Very Slow', 'Slow', 'Medium', 'Normal', 'Fast', 'Faster', 'Very Fast']; speedValue.textContent = speedValues[Math.min(speedInput.value - 1, speedValues.length - 1)]; } // Start simulation function startSimulation() { if (isPlaying) return; isPlaying = true; updateButtonStates(); simulate(); } // Pause simulation function pauseSimulation() { isPlaying = false; if (animationId) { cancelAnimationFrame(animationId); animationId = null; } updateButtonStates(); } // Step simulation once function stepSimulation() { if (isPlaying) { pauseSimulation(); } computeNextGeneration(); draw(); generation++; genCounter.textContent = `Gen: ${generation}`; } // Run simulation function simulate() { if (!isPlaying) return; computeNextGeneration(); draw(); generation++; genCounter.textContent = `Gen: ${generation}`; const speed = parseInt(speedInput.value); const delay = Math.max(1, 300 - (speed * 25)); animationId = setTimeout(simulate, delay); } // Compute next generation based on Game of Life rules function computeNextGeneration() { for (let i = 0; i < rows; i++) { for (let j = 0; j < cols; j++) { const neighbors = countLiveNeighbors(i, j); // Apply Game of Life rules if (grid[i][j]) { // Cell is alive if (neighbors < 2 || neighbors > 3) { nextGrid[i][j] = false; // Dies } else { nextGrid[i][j] = true; // Lives } } else { // Cell is dead if (neighbors === 3) { nextGrid[i][j] = true; // Born } else { nextGrid[i][j] = false; // Stays dead } } } } // Swap grids [grid, nextGrid] = [nextGrid, grid]; } // Count live neighbors for a cell function countLiveNeighbors(row, col) { let count = 0; for (let i = -1; i <= 1; i++) { for (let j = -1; j <= 1; j++) { if (i === 0 && j === 0) continue; // Skip the cell itself const newRow = row + i; const newCol = col + j; // Check bounds and count live neighbors if (newRow >= 0 && newRow < rows && newCol >= 0 && newCol < cols) { if (grid[newRow][newCol]) { count++; } } } } return count; } // Randomize grid function randomize() { for (let i = 0; i < rows; i++) { for (let j = 0; j < cols; j++) { grid[i][j] = Math.random() > 0.7; } } generation = 0; genCounter.textContent = `Gen: ${generation}`; draw(); } // Clear grid function clearGrid() { for (let i = 0; i < rows; i++) { for (let j = 0; j < cols; j++) { grid[i][j] = false; } } generation = 0; genCounter.textContent = `Gen: ${generation}`; draw(); } // Draw grid on canvas function draw() { // Clear canvas ctx.clearRect(0, 0, canvas.width, canvas.height); // Draw grid for (let i = 0; i < rows; i++) { for (let j = 0; j < cols; j++) { if (grid[i][j]) { // Draw live cell ctx.fillStyle = '#4ecdc4'; ctx.fillRect(j * cellSize, i * cellSize, cellSize, cellSize); // Draw cell border ctx.strokeStyle = '#2a9d8f'; ctx.lineWidth = 1; ctx.strokeRect(j * cellSize, i * cellSize, cellSize, cellSize); } else { // Draw dead cell (grid lines) ctx.strokeStyle = 'rgba(255, 255, 255, 0.1)'; ctx.lineWidth = 0.5; ctx.strokeRect(j * cellSize, i * cellSize, cellSize, cellSize); } } } } // Mouse interaction handlers function handleMouseDown(e) { isDragging = true; const rect = canvas.getBoundingClientRect(); dragStartX = e.clientX - rect.left; dragStartY = e.clientY - rect.top; toggleCell(dragStartX, dragStartY); } function handleMouseMove(e) { if (!isDragging) return; const rect = canvas.getBoundingClientRect(); const mouseX = e.clientX - rect.left; const mouseY = e.clientY - rect.top; toggleCell(mouseX, mouseY); } function handleMouseUp() { isDragging = false; } // Toggle cell state at mouse position function toggleCell(x, y) { const col = Math.floor(x / cellSize); const row = Math.floor(y / cellSize); if (row >= 0 && row < rows && col >= 0 && col < cols) { grid[row][col] = !grid[row][col]; drawCell(row, col); } } // Draw a single cell function drawCell(row, col) { ctx.clearRect(col * cellSize, row * cellSize, cellSize, cellSize); if (grid[row][col]) { ctx.fillStyle = '#4ecdc4'; ctx.fillRect(col * cellSize, row * cellSize, cellSize, cellSize); ctx.strokeStyle = '#2a9d8f'; ctx.lineWidth = 1; ctx.strokeRect(col * cellSize, row * cellSize, cellSize, cellSize); } else { ctx.strokeStyle = 'rgba(255, 255, 255, 0.1)'; ctx.lineWidth = 0.5; ctx.strokeRect(col * cellSize, row * cellSize, cellSize, cellSize); } } // Update button states based on simulation state function updateButtonStates() { playBtn.disabled = isPlaying; pauseBtn.disabled = !isPlaying; } // Initialize the game init(); }); </script> </body> </html>

assistant

thinking

[REDACTED].

→ bash {"command":"cat index.html"}

toolResult

assistant

thinking

[REDACTED].

→ bash {"command":"grep -n \"pauseSimulation\" index.html"}

toolResult

303: pauseBtn.addEventListener('click', pauseSimulation); 358: function pauseSimulation() { 370: pauseSimulation();

assistant

thinking

[REDACTED].

→ bash {"command":"sed -n '358,370p' index.html"}

toolResult

function pauseSimulation() { isPlaying = false; if (animationId) { cancelAnimationFrame(animationId); animationId = null; } updateButtonStates(); } // Step simulation once function stepSimulation() { if (isPlaying) { pauseSimulation();

assistant

thinking

[REDACTED].

→ bash {"command":"grep -n \"cancelAnimationFrame\" index.html"}

toolResult

361: cancelAnimationFrame(animationId);

assistant

thinking

[REDACTED].

→ edit

{"path":"index.html","edits":[{"oldText":"            function pauseSimulation() {\n                isPlaying = false;\n                if (

toolResult

Successfully replaced 1 block(s) in index.html.

assistant

thinking

[REDACTED].

→ bash {"command":"grep -A 10 \"function simulate\" index.html"}

toolResult

function simulate() { if (!isPlaying) return; computeNextGeneration(); draw(); generation++; genCounter.textContent = `Gen: ${generation}`; const speed = parseInt(speedInput.value); const delay = Math.max(1, 300 - (speed * 25)); animationId = setTimeout(simulate, delay);

assistant

thinking

[REDACTED].

→ bash {"command":"sed -n '350,380p' index.html"}

toolResult

assistant

thinking

[REDACTED].

→ bash {"command":"sed -n '350,400p' index.html"}

toolResult

assistant

thinking

[REDACTED].

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

modelnova-2-lite-v1

vendorAmazon · Nova

harnesspi-agent

generated2026-08-01

EVALUATION

★★★★★ 2/5 partial

Random grid displayed with controls, but generation counter stays at 0 and no simulation, play, or click/drag toggling occurs.

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 drag0.5%

on wheel0.0%

on enter + space0.0%

on arrow keys0.0%

on w/a/s/d0.0%

frame spread47.2 / 255

console errors0

js errors none

METRICS

runtime136.2s

tokens in67k

tokens out20k

cached0

cost / run$0.0698