2048 · llama-3.1-8b-instruct
No runnable output Cost / run $0.0010 Runtime 42.0s
Prompt for this run
Build a playable 2048 game using HTML elements and CSS with a 4 by 4 board. 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: - Arrow keys slide tiles toward the selected edge. Adjacent equal tiles merge once per tile per move, and the score increases by the value of each new merged tile. - For example, moving [2, 2, 2, 2] left produces [4, 4, 0, 0], not [8, 0, 0, 0]. Moving [2, 2, 4, 0] left produces [4, 4, 0, 0]. These examples describe the move before spawning a new tile. - Start with two tiles. After a move that changes the board, spawn exactly one tile in an empty cell: 2 with 90% probability, otherwise 4. Do not spawn after an unchanged move. - Animate movement and merging without allowing rapid input to corrupt board state. Prevent arrow keys from scrolling the page. - Show score, a win message on reaching 2048, and Game Over only when no valid move remains. Provide New Game to reset board and score; allow continuing after a win. Verify: Play a short sequence of arrow-key moves and check that tiles slide, a valid move adds a tile, and any observed merge updates the score by its merged value. Use New Game and check that the board returns to two tiles with a reset score.
This one-shot run produced no runnable artifact.
Error: agent produced no index.html
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TAKE IT TO CODE
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METRICS
Transcript · 8 messages
Build a playable 2048 game using HTML elements and CSS with a 4 by 4 board. 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: - Arrow keys slide tiles toward the selected edge. Adjacent equal tiles merge once per tile per move, and the score increases by the value of each new merged tile. - For example, moving [2, 2, 2, 2] left produces [4, 4, 0, 0], not [8, 0, 0, 0]. Moving [2, 2, 4, 0] left produces [4, 4, 0, 0]. These examples describe the move before spawning a new tile. - Start with two tiles. After a move that changes the board, spawn exactly one tile in an empty cell: 2 with 90% probability, otherwise 4. Do not spawn after an unchanged move. - Animate movement and merging without allowing rapid input to corrupt board state. Prevent arrow keys from scrolling the page. - Show score, a win message on reaching 2048, and Game Over only when no valid move remains. Provide New Game to reset board and score; allow continuing after a win. Verify: Play a short sequence of arrow-key moves and check that tiles slide, a valid move adds a tile, and any observed merge updates the score by its merged value. Use New Game and check that the board returns to two tiles with a reset score.
<write>{"content": "<!DOCTYPE html><html><head><style>/* CSS styles */ #game { position: relative; width: 400px; height: 400px; background-color: #ccc; margin: 40px auto; padding: 20px; text-align: center; border: 1px solid #000; box-shadow: 0 0 10px rgba(0, 0, 0, 0.2); } #board { display: grid; grid-template-columns: repeat(4, 100px); grid-template-rows: repeat(4, 100px); grid-gap: 10px; } .tile { position: relative; width: 100px; height: 100px; background-color: #fff; font-size: 40px; font-weight: bold; display: flex; justify-content: center; align-items: center; } .tile::before { content: ''; position: absolute; top: -50%; left: -50%; width: 150%; height: 150%; border-radius: 50%; border: 10px solid #fff; box-shadow: 0 0 20px rgba(0, 0, 0, 0.2); }#score { font-size: 24px; font-weight: bold; position: absolute; top: 10px; left: 10px; }#win { font-size: 24px; font-weight: bold; color: green; position: absolute; top: 50px; left: 50px; display: none; }#game-over { font-size: 24px; font-weight: bold; color: red; position: absolute; top: 120px; left: 50px; display: none; }</style></head><body><div id=\"game\"><h1>2048</h1><div id=\"score\">Score: 0</div><div id=\"win\">YOU WIN!</div><div id=\"game-over\">GAME OVER</div><div id=\"board\"><div class=\"tile\" id=\"tile-00\">2</div><div class=\"tile\" id=\"tile-01\">2</div><div class=\"tile\" id=\"tile-02\"></div><div class=\"tile\" id=\"tile-03\"></div><div class=\"tile\" id=\"tile-10\"></div><div class=\"tile\" id=\"tile-11\"></div><div class=\"tile\" id=\"tile-12\"></div><div class=\"tile\" id=\"tile-13\"></div><div class=\"tile\" id=\"tile-20\"></div><div class=\"tile\" id=\"tile-21\"></div><div class=\"tile\" id=\"tile-22\"></div><div class=\"tile\" id=\"tile-23\"></div><div class=\"tile\" id=\"tile-30\"></div><div class=\"tile\" id=\"tile-31\"></div><div class=\"tile\" id=\"tile-32\"></div><div class=\"tile\" id=\"tile-33\"></div></div><button id=\"new-game\">New Game</button></div><script>/* JavaScript code */</script></body></html>"}></write> <script>document.addEventListener('keydown', move); document.getElementById('new-game').addEventListener('click', resetGame); let tiles = Array(16).fill(0); let board = document.getElementById('board'); let score = document.getElementById('score'); let newGame = document.getElementById('new-game'); let win = document.getElementById('win'); let gameOver = document.getElementById('game-over'); function move(e) { let key; switch (e.key) { case 'ArrowLeft': key = 'left'; break; case 'ArrowRight': key = 'right'; break; case 'ArrowUp': key = 'up'; break; case 'ArrowDown': key = 'down'; break; } if (key) { let moves = getMoves(); let move = moves[key]; if (move) { move(key); if (!moved()) { let emptyTile = getEmptyTile(); setTile(emptyTile.x, emptyTile.y, Math.random() > 0.9 ? 4 : 2); score.textContent = 'Score: ' + getScore(); if (isWin()) { win.style.display = 'block'; } if (!isGameOver()) { gameOver.style.display = 'none'; } } } } } function resetGame() { resetBoard(); resetScore(); gameOver.style.display = 'none'; win.style.display = 'none'; updateBoard(); } function resetBoard() { tiles.fill(0); newGame.remove(); } function resetScore() { score.textContent = 'Score: 0'; } function isGameOver() { if (getEmptyTile()) { return false; } let scoreValue = getScore(); for (let i = 0; i < 16; i++) { let tile = tiles[i]; if (tile && tile < scoreValue) { return false; } } return true; } function isWin() { if (getScore() >= 2048) { return true; } return false; } function getScore() { let score = 0; for (let i = 0; i < 16; i++) { score += tiles[i]; } return score; } function updateBoard() { let tilesHtml = ''; for (let i = 0; i < 16; i++) { let row = Math.floor(i / 4); let col = i % 4; let tile = tiles[i]; tilesHtml += '<div class="tile" id="tile-' + row.toString() + '-' + col.toString() + '">' + (tile ? tile.toString() : '') + '</div>'; } board.innerHTML = tilesHtml; } function setTile(row, col, value) { let index = row * 4 + col; tiles[index] = value; updateBoard(); } function getEmptyTile() { for (let i = 0; i < 16; i++) { if (!tiles[i]) { return { x: Math.floor(i / 4), y: i % 4 }; } } return null; } function getMoves() { let moves = { up: [], down: [], left: [], right: [] }; for (let i = 0; i < 16; i++) { let tile = tiles[i]; if (tile) { let row = Math.floor(i / 4); let col = i % 4; switch (Math.abs(row - 3)) { case 0: moves.up.push(i); moves.down.push(i); break; case 1: moves.up.push(i); moves.down.push(i); break; case 2: moves.up.push(i); moves.right.push(i); moves.left.push(i); moves.down.push(i); break; default: break; } switch (Math.abs(col - 3)) { case 0: moves.left.push(i); moves.right.push(i); break; case 1: moves.right.push(i); moves.left.push(i); break; case 2: moves.up.push(i); moves.right.push(i); moves.left.push(i); moves.down.push(i); break; default: break; } } } return moves; } function moved() { resetTiles(); let tilesHtml = ''; let tilesString = ''; for (let i = 0; i < 16; i++) { let row = Math.floor(i / 4); let col = i % 4; let tile = tiles[i]; tilesHtml += '</div>'; tilesString += tile ? tile.toString() : ''; } //console.log(tilesString); return tilesString; } function resetTiles() { for (let i = 0; i < 16; i++) { tiles[i] = 0; } } function getCompressedBoard() { let boardString = ''; for (let i = 0; i < 16; i++) { boardString += tiles[i].toString(); } return boardString; } function mergeTiles(i, j) { while (j < 15 && tiles[j] === tiles[j + 1]) { tiles[j] *= 2; tiles[j + 1] = 0; j++; } } function slideTiles(i, j) { switch (i % 4) { case 1: mergeTiles(4 * (i - 1) + 0, 4 * (i - 1) + 1); break; case 2: mergeTiles(4 * (i - 1) + 1, 4 * (i - 1) + 2); break; case 3: mergeTiles(4 * (i - 1) + 2, 4 * (i - 1) + 3); break; default: break; } } function compressBoard(boardString) { let compressedBoard = []; let row = 0; for (let i = 0; i < 16; i++) { compressedBoard[row] = parseInt(boardString.charAt(i)); if (i % 4 === 3) { row++; } } return compressedBoard; } function decompressBoard(compressedBoard) { let boardString = ''; for (let i = 0; i < 16; i++) { boardString += compressedBoard[i].toString(); } return boardString; } window.onload = function() { newGame.remove(); let scoreValue = Math.floor(Math.random() * 6 + 1); let tile = getEmptyTile(); setTile(tile.x, tile.y, scoreValue); setTile(tile.x, tile.y + 4, scoreValue); updateBoard(); score.textContent = 'Score: ' + getScore(); }; </script></write>
The output file index.html has not been written, or is empty. Write the complete app to index.html in the current directory now. Use the remaining time to verify it, then finish. The original 15-minute deadline still applies.
<write>{"content": "<!DOCTYPE html><html><head><style>/* CSS styles */ #game { position: relative; width: 400px; height: 400px; background-color: #ccc; margin: 40px auto; padding: 20px; text-align: center; border: 1px solid #000; box-shadow: 0 0 10px rgba(0, 0, 0, 0.2); } #board { display: grid; grid-template-columns: repeat(4, 100px); grid-template-rows: repeat(4, 100px); grid-gap: 10px; } .tile { position: relative; width: 100px; height: 100px; background-color: #fff; font-size: 40px; font-weight: bold; display: flex; justify-content: center; align-items: center; } .tile::before { content: ''; position: absolute; top: -50%; left: -50%; width: 150%; height: 150%; border-radius: 50%; border: 10px solid #fff; box-shadow: 0 0 20px rgba(0, 0, 0, 0.2); }#score { font-size: 24px; font-weight: bold; position: absolute; top: 10px; left: 10px; }#win { font-size: 24px; font-weight: bold; color: green; position: absolute; top: 50px; left: 50px; display: none; }#game-over { font-size: 24px; font-weight: bold; color: red; position: absolute; top: 120px; left: 50px; display: none; }</style><script>/* JavaScript code */ let tiles = Array(16).fill(0); let board = document.getElementById('board'); let score = document.getElementById('score'); let win = document.getElementById('win'); let gameOver = document.getElementById('game-over'); function move(e) { let key; switch (e.key) { case 'ArrowLeft': key = 'left'; break; case 'ArrowRight': key = 'right'; break; case 'ArrowUp': key = 'up'; break; case 'ArrowDown': key = 'down'; break; } if (key) { let moves = getMoves(); let move = moves[key]; if (move) { move(key); if (!moved()) { let emptyTile = getEmptyTile(); setTile(emptyTile.x, emptyTile.y, Math.random() > 0.9 ? 4 : 2); score.textContent = 'Score: ' + getScore(); if (isWin()) { win.style.display = 'block'; } if (!isGameOver()) { gameOver.style.display = 'none'; } } } } } function resetGame() { resetBoard(); resetScore(); gameOver.style.display = 'none'; win.style.display = 'none'; updateBoard(); } function resetBoard() { tiles.fill(0); } function resetScore() { score.textContent = 'Score: 0'; } function isGameOver() { if (getEmptyTile()) { return false; } let scoreValue = getScore(); for (let i = 0; i < 16; i++) { let tile = tiles[i]; if (tile && tile < scoreValue) { return false; } } return true; } function isWin() { if (getScore() >= 2048) { return true; } return false; } function getScore() { let score = 0; for (let i = 0; i < 16; i++) { score += tiles[i]; } return score; } function updateBoard() { let tilesHtml = ''; for (let i = 0; i < 16; i++) { let row = Math.floor(i / 4); let col = i % 4; let tile = tiles[i]; tilesHtml += '<div class="tile" id="tile-' + row.toString() + '-' + col.toString() + '">' + (tile ? tile.toString() : '') + '</div>'; } board.innerHTML = tilesHtml; } function setTile(row, col, value) { let index = row * 4 + col; tiles[index] = value; updateBoard(); } function getEmptyTile() { for (let i = 0; i < 16; i++) { if (!tiles[i]) { return { x: Math.floor(i / 4), y: i % 4 }; } } return null; } function getMoves() { let moves = { up: [], down: [], left: [], right: [] }; for (let i = 0; i < 16; i++) { let tile = tiles[i]; if (tile) { let row = Math.floor(i / 4); let col = i % 4; switch (Math.abs(row - 3)) { case 0: case 1: moves.up.push(i); breaks; case 2: moves.up.push(i); moves.right.push(i); moves.left.push(i); moves.down.push(i); breaks; } switch (Math.abs(col - 3)) { case 0: case 1: moves.left.push(i); breaks; case 2: moves.up.push(i); moves.right.push(i); moves.left.push(i); moves.down.push(i); break; } } } return moves; } function moved() { resetTiles(); let tilesHtml = ''; let tilesString = ''; for (let i = 0; i < 16; i++) { let row = Math.floor(i / 4); let col = i % 4; let tile = tiles[i]; tilesHtml += '</div>'; tilesString += tile ? tile.toString() : ''; } //console.log(tilesString); return tilesString; } function resetTiles() { for (let i = 0; i < 16; i++) { tiles[i] = 0; } }</script></head><body><div id=\"game\"><h1>2048</h1><div id=\"score\">Score: 0</div><div id=\"win\">YOU WIN!</div><div id=\"game-over\">GAME OVER</div><div id=\"board\"><div class=\"tile\" id=\"tile-00\">2</div><div class=\"tile\" id=\"tile-01\">2</div><div class=\"tile\" id=\"tile-02\"></div><div class=\"tile\" id=\"tile-03\"></div><div class=\"tile\" id=\"tile-10\"></div><div class=\"tile\" id=\"tile-11\"></div><div class=\"tile\" id=\"tile-12\"></div><div class=\"tile\" id=\"tile-13\"></div><div class=\"tile\" id=\"tile-20\"></div><div class=\"tile\" id=\"tile-21\"></div><div class=\"tile\" id=\"tile-22\"></div><div class=\"tile\" id=\"tile-23\"></div><div class=\"tile\" id=\"tile-30\"></div><div class=\"tile\" id=\"tile-31\"></div><div class=\"tile\" id=\"tile-32\"></div><div class=\"tile\" id=\"tile-33\"></div></div><button id=\"new-game\">New Game</button></div><script>document.addEventListener('keydown', move);document.getElementById('new-game').addEventListener('click', resetGame);document.getElementById('board').addEventListener('click', function(event){if(event.target.classList.value.trim() !== ""){let tileIndex = parseInt(event.target.id.slice(5));tiles[tileIndex] = 0;updateBoard();}});updateBoard();document.addEventListener('mousemove', function(event){let x = event.clientX - document.body.clientWidth / 2;let y = event.clientY - document.body.clientHeight / 2;console.log(x, y)}});document.addEventListener('mousedown', function(event){let x = event.clientX - document.body.clientWidth / 2;let y = event.clientY - document.body.clientHeight / 2;console.log(x, y)}});document.addEventListener('mouseup', function(event){let x = event.clientX - document.body.clientWidth / 2;let y = event.clientY - document.body.clientHeight / 2;console.log(x, y)}});window.onscroll = function(){document.body.scrollTop = 0;document.documentElement.scrollTop = 0;};window.onblur = function(){window.location.reload();});window.onbeforeunload = function(event){return 'Game data will be lost if you navigate away.';}<button id="button1">Button 1</button><button id="button2">Button 2</button></script></body></html>"}</function></write>
The output file index.html has not been written, or is empty. Write the complete app to index.html in the current directory now. Use the remaining time to verify it, then finish. The original 15-minute deadline still applies.
<write>{"content": "<!DOCTYPE html><html><head><style>/* CSS styles */ #game { position: relative; width: 400px; height: 400px; background-color: #ccc; margin: 40px auto; padding: 20px; text-align: center; border: 1px solid #000; box-shadow: 0 0 10px rgba(0, 0, 0, 0.2); } #board { display: grid; grid-template-columns: repeat(4, 100px); grid-template-rows: repeat(4, 100px); grid-gap: 10px; } .tile { position: relative; width: 100px; height: 100px; background-color: #fff; font-size: 40px; font-weight: bold; display: flex; justify-content: center; align-items: center; } .tile::before { content: ''; position: absolute; top: -50%; left: -50%; width: 150%; height: 150%; border-radius: 50%; border: 10px solid #fff; box-shadow: 0 0 20px rgba(0, 0, 0, 0.2); }#score { font-size: 24px; font-weight: bold; position: absolute; top: 10px; left: 10px; }#win { font-size: 24px; font-weight: bold; color: green; position: absolute; top: 50px; left: 50px; display: none; }#game-over { font-size: 24px; font-weight: bold; color: red; position: absolute; top: 120px; left: 50px; display: none; }</style><script>/* JavaScript code */ let tiles = Array(16).fill(0); let board = document.getElementById('board'); let score = document.getElementById('score'); let newGame = document.getElementById('new-game'); let win = document.getElementById('win'); let gameOver = document.getElementById('game-over'); function move(e) { let key; switch (e.key) { case 'ArrowLeft': key = 'left'; break; case 'ArrowRight': key = 'right'; break; case 'ArrowUp': key = 'up'; break; case 'ArrowDown': key = 'down'; break; } if (key) { let moves = getMoves(); let move = moves[key]; if (move) { move(key); if (!moved()) { let emptyTile = getEmptyTile(); setTile(emptyTile.x, emptyTile.y, Math.random() > 0.9 ? 4 : 2); score.textContent = 'Score: ' + getScore(); if (isWin()) { win.style.display = 'block'; } if (!isGameOver()) { gameOver.style.display = 'none'; } } } } } function resetGame() { resetBoard(); resetScore(); gameOver.style.display = 'none'; win.style.display = 'none'; updateBoard(); } function resetBoard() { tiles.fill(0); } function resetScore() { score.textContent = 'Score: 0'; } function isGameOver() { if (getEmptyTile()) { return false; } let scoreValue = getScore(); for (let i = 0; i < 16; i++) { let tile = tiles[i]; if (tile && tile < scoreValue) { return false; } } return true; } function isWin() { if (getScore() >= 2048) { return true; } return false; } function getScore() { let score = 0; for (let i = 0; i < 16; i++) { score += tiles[i]; } return score; } function updateBoard() { let tilesHtml = ''; for (let i = 0; i < 16; i++) { let row = Math.floor(i / 4); let col = i % 4; let tile = tiles[i]; tilesHtml += '<div class="tile" id="tile-' + row.toString() + '-' + col.toString() + '">' + (tile ? tile.toString() : '') + '</div>'; } board.innerHTML = tilesHtml; } function setTile(row, col, value) { let index = row * 4 + col; tiles[index] = value; updateBoard(); } function getEmptyTile() { for (let i = 0; i < 16; i++) { if (!tiles[i]) { return { x: Math.floor(i / 4), y: i % 4 }; } } return null; } function getMoves() { let moves = { up: [], down: [], left: [], right: [] }; for (let i = 0; i < 16; i++) { let tile = tiles[i]; if (tile) { let row = Math.floor(i / 4); let col = i % 4; switch (Math.abs(row - 3)) { case 0: case 1: moves.up.push(i); breaks; case 2: moves.up.push(i); moves.right.push(i); moves.left.push(i); moves.down.push(i); breaks; } switch (Math.abs(col - 3)) { case 0: case 1: moves.left.push(i); breaks; case 2: moves.up.push(i); moves.right.push(i); moves.left.push(i); moves.down.push(i); break; } } } return moves; } function moved() { resetTiles(); let tilesHtml = ''; let tilesString = ''; for (let i = 0; i < 16; i++) { let row = Math.floor(i / 4); let col = i % 4; let tile = tiles[i]; tilesHtml += '</div>'; tilesString += tile ? tile.toString() : ''; } //console.log(tilesString); return tilesString; } function resetTiles() { for (let i = 0; i < 16; i++) { tiles[i] = 0; } } document.addEventListener('keydown', move);document.getElementById('new-game').addEventListener('click', resetGame);document.getElementById('board').addEventListener('click', function(event){if(event.target.classList.value.trim() !== ""){let tileIndex = parseInt(event.target.id.slice(5));tiles[tileIndex] = 0;updateBoard();}});updateBoard();</script></head><body><div id=\"game\"><h1>2048</h1><div id=\"score\">Score: 0</div><div id=\"win\">YOU WIN!</div><div id=\"game-over\">GAME OVER</div><div id=\"board\"><div class=\"tile\" id=\"tile-00\">2</div><div class=\"tile\" id=\"tile-01\">2</div><div class=\"tile\" id=\"tile-02\"></div><div class=\"tile\" id=\"tile-03\"></div><div class=\"tile\" id=\"tile-10\"></div><div class=\"tile\" id=\"tile-11\"></div><div class=\"tile\" id=\"tile-12\"></div><div class=\"tile\" id=\"tile-13\"></div><div class=\"tile\" id=\"tile-20\"></div><div class=\"tile\" id=\"tile-21\"></div><div class=\"tile\" id=\"tile-22\"></div><div class=\"tile\" id=\"tile-23\"></div><div class=\"tile\" id=\"tile-30\"></div><div class=\"tile\" id=\"tile-31\"></div><div class=\"tile\" id=\"tile-32\"></div><div class=\"tile\" id=\"tile-33\"></div></div><button id=\"new-game\">New Game</button></div></body></html>"}</function></write>