Fireworks · llama-3.1-8b-instruct
No runnable output Cost / run $0.0009 Runtime 9.7s
Prompt for this run
Build an interactive fireworks display on a full-screen canvas. 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: - Clicking the sky launches a visible shell upward from the bottom of the scene toward the clicked location. The shell then explodes into a radial burst of colored particles. - Burst particles fall under gravity, fade over time, and are removed after their lifetime. Support several overlapping shells and bursts. - Launch one demonstration shell automatically on initial load so the effect is visible before interaction; subsequent shells respond to clicks. - Provide Clear to remove active shells, particles, and trails. Keep controls usable after resizing. - Use procedural drawing only. Choose the visual design, palette, and trails freely while keeping the launch-to-burst sequence visible. Verify: Trigger a shell at a chosen location and sample its ascent, burst, and early particle fall. Check that the click affects the launch target and that particles visibly spread and fade. Use Clear and confirm the scene is emptied.
This one-shot run produced no runnable artifact.
Error: agent produced no index.html
The transcript below shows what the model did — read it to see why the one shot fell short.
TAKE IT TO CODE
This run produced no artifact — reuse the prompt with a different model or your own pi-agent run.
RUN
METRICS
Transcript · 7 messages
Build an interactive fireworks display on a full-screen canvas. 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: - Clicking the sky launches a visible shell upward from the bottom of the scene toward the clicked location. The shell then explodes into a radial burst of colored particles. - Burst particles fall under gravity, fade over time, and are removed after their lifetime. Support several overlapping shells and bursts. - Launch one demonstration shell automatically on initial load so the effect is visible before interaction; subsequent shells respond to clicks. - Provide Clear to remove active shells, particles, and trails. Keep controls usable after resizing. - Use procedural drawing only. Choose the visual design, palette, and trails freely while keeping the launch-to-burst sequence visible. Verify: Trigger a shell at a chosen location and sample its ascent, burst, and early particle fall. Check that the click affects the launch target and that particles visibly spread and fade. Use Clear and confirm the scene is emptied.
<write>{"path": "./index.html", "content": "<!DOCTYPE html><html><head><style>body{margin: 0; display: flex; justify-content: center; align-items: center; height: 100vh; overflow: hidden;}#sky{width: 100%; height: 100vh; background-image: linear-gradient(to bottom, #000, #333);}</style></head><body><canvas id=\"sky\" width=\"1920\" height=\"1080\"></canvas><button id=\"clear\">Clear</button><script>var canvas = document.getElementById('sky');var ctx = canvas.getContext('2d');var gravity = 0.1;var particles = [];var trails = [];ctx.canvas.width = window.innerWidth;ctx.canvas.height = window.innerHeight;var shellTimeouts = [];document.getElementById('clear').addEventListener('click', function(){particles = [];trails = [];shellTimeouts = [];});canvas.addEventListener('click', function(event){var x = event.clientX;var y = event.clientY;launchShell(x, y);});function launchShell(x, y){var shell = {x: canvas.width/2, y: canvas.height, vx: 0, vy: 0, burst: false, t: Date.now()}shellTimeouts.push(setTimeout(function(){launchBurst(x, y)}, 2000));ctx.beginPath();ctx.arc(shell.x, shell.y, 2, 0, 2*Math.PI);ctx.fillStyle = 'yellow';ctx.fill();function updateShell(){ctx.clearRect(0, 0, canvas.width, canvas.height);ctx.beginPath();ctx.arc(shell.x, shell.y, 2, 0, 2*Math.PI);ctx.fillStyle = 'yellow';ctx.fill();ctx.beginPath();ctx.arc(x, y, 2, 0, 2*Math.PI);ctx.fillStyle = '#00ff00';ctx.fill();ctx.beginPath();ctx.arc(x, y, shell.x - x, 0, 2*Math.PI);ctx.strokeStyle = 'white';ctx.lineWidth = 2;ctx.stroke();ctx.beginPath();ctx.arc(x, y, (shell.x - x) * (1 + (Date.now() - shell.t) / 2000), 0, 2*Math.PI);ctx.strokeStyle = 'blue';ctx.lineWidth = 2;ctx.stroke();ctx.fillStyle = 'rgba(128, 128, 128, 0.2)';ctx.fillRect(0, 0, canvas.width, canvas.height);trails.forEach(function(trail, index){var trailctx = document.createElement('canvas').getContext('2d');trailctx.beginPath();trailctx.arc(trail[0].x, trail[0].y, trail[0].r, 0, 2*Math.PI);trailctx.fillStyle = trail[0].c;trailctx.fill();var trailctximg = trailctx.getImageData(0, 0, trailctx.canvas.width, trailctx.canvas.height).data;var gradient = ctx.createRadialGradient(trail[0].x - trail.r, trail[0].y - trail.r, trail.r, trail[0].x + trail.r, trail[0].y + trail.r, trail.r);gradient.addColorStop(0, trail[0].c);gradient.addColorStop(1, 'rgba(0, 0, 0, 0)');ctx.fillStyle = gradient;ctx.fillRect(index * 100, (index * 100 + 10), 50, 5);ctx.fillStyle = trailctximg.data;ctx.fillRect(index * 100 + 10, (index * 100 + 5), 50, 50);});trails.splice(0, trails.length - 100);particles.forEach(function(particle, index){ctx.fillStyle = particle.c;ctx.beginPath();ctx.arc(particle.x, particle.y, particle.r, 0, 2*Math.PI);ctx.fill();if(particle.y > particle.maxy){particles.splice(index, 1);}});particles.slice(0, 100).forEach(function(particle, index){var i = particles.indexOf(particle);ctx.fillStyle = particle.c;ctx.beginPath();ctx.arc(particle.x + i * 20, particle.y + i * 20, particle.r, 0, 2*Math.PI);ctx.fill();});shell.vy += gravity;shell.x += shell.vx;shell.y += shell.vy;if(shell.burst){shell.burst = false;particles.push({x: x, y: y, c: 'rgba(255, 0, 0, 1)', r: 2, maxy: y + 100});particles.push({x: x, y: y, c: 'rgba(0, 255, 0, 1)', r: 2, maxy: y + 70});particles.push({x: x, y: y, c: 'rgba(0, 0, 255, 1)', r: 2, maxy: y + 140});particles.push({x: x, y: y, c: 'rgba(255, 255, 0, 1)', r: 2, maxy: y + 90});shellTimeouts.splice(shellTimeouts.indexOf(function(){updateShell();}), 1);var burstTimeouts = [];for(var i = 0; i < 100; i++){var particleTimeouts = [];for(var j = 0; j < 10; j++){particleTimeouts.push(setTimeout(function(){particles.push({x: x + Math.sin(Date.now()), y: y - Math.sin(Date.now()), c: 'rgba(0, 0, 255, 0.5)', r: 1, maxy: y});}, 50));particles.push({x: x + Math.sin(Date.now()), y: y - Math.sin(Date.now()), c: 'rgba(0, 0, 255, 0.5)', r: 1, maxy: y});particles.push({x: x + Math.sin(Date.now()), y: y - Math.sin(Date.now()), c: 'rgba(0, 255, 0, 0.5)', r: 1, maxy: y});}};ctx.fillStyle = 'rgba(0, 0, 0, 0.3)';ctx.fillRect(0, 0, canvas.width, canvas.height);shellTimeouts.splice(shellTimeouts.indexOf(function(){updateShell();}), 1);}, 10)));ctx.fillStyle = 'white';ctx.font = '24px Arial';ctx.textAlign = 'center';ctx.textBaseline = 'top';ctx.fillText('Click to launch a shell...', canvas.width/2, 30);setTimeout(updateShell, 100);ctx.canvas.width = window.innerWidth;ctx.canvas.height = window.innerHeight;function launchBurst(x, y){clearTimeout(shellTimeouts[0]);shellTimeouts = []shell.burst = true;}function launchShells(){launchShell(canvas.width/2, canvas.height/2);launchBurst(canvas.width/2, canvas.height/2)}launchShells();setInterval(updateShell, 10);}</script></body></html>"}</function>
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>{"path": "./index.html", "content": "<!DOCTYPE html>\n<html>\n<head>\n<style>\nbody{margin: 0; display: flex; justify-content: center; align-items: center; height: 100vh; overflow: hidden;}\n#sky{width: 100%; height: 100vh; background-image: linear-gradient(to bottom, #000, #333);}\n</style>\n</head>\n<body>\n<canvas id=\"sky\" width=\"1920\" height=\"1080\"></canvas>\n<button id=\"clear\">Clear</button>\n<script>\nvar canvas = document.getElementById('sky');\nvar ctx = canvas.getContext('2d');\nvar gravity = 0.1;\nvar particles = [];\nvar trails = [];\nctx.canvas.width = window.innerWidth;\nctx.canvas.height = window.innerHeight;\nvar shellTimeouts = [];document.getElementById('clear').addEventListener('click', function(){\nparticles = [];\ntrails = [];\nshellTimeouts = [];\n});canvas.addEventListener('click', function(event){\nvar x = event.clientX;\nvar y = event.clientY;\nlaunchShell(x, y);\n});\nfunction launchShell(x, y){\nvar shell = {x: canvas.width/2, y: canvas.height, vx: 0, vy: 0, burst: false, t: Date.now()}\nshellTimeouts.push(setTimeout(function(){\nlaunchBurst(x, y);\n}, 2000));\nctx.beginPath();\nctx.arc(shell.x, shell.y, 2, 0, 2*Math.PI);\nctx.fillStyle = 'yellow';\nctx.fill();\nfunction updateShell(){\nctx.clearRect(0, 0, canvas.width, canvas.height);\nctx.beginPath();\nctx.arc(shell.x, shell.y, 2, 0, 2*Math.PI);\nctx.fillStyle = 'yellow';\nctx.fill();\nctx.beginPath();\nctx.arc(x, y, 2, 0, 2*Math.PI);\nctx.fillStyle = '#00ff00';\nctx.fill();\nctx.beginPath();\nctx.arc(x, y, shell.x - x, 0, 2*Math.PI);\nctx.strokeStyle = 'white';\nctx.lineWidth = 2;\nctx.stroke();\nctx.beginPath();\nctx.arc(x, y, (shell.x - x) * (1 + (Date.now() - shell.t) / 2000), 0, 2*Math.PI);\nctx.strokeStyle = 'blue';\nctx.lineWidth = 2;\nctx.stroke();\nctx.fillStyle = 'rgba(128, 128, 128, 0.2)';\nctx.fillRect(0, 0, canvas.width, canvas.height);\ntrails.forEach(function(trail, index){\nvar trailctx = document.createElement('canvas').getContext('2d');\ntrailctx.beginPath();\ntrailctx.arc(trail[0].x, trail[0].y, trail[0].r, 0, 2*Math.PI);\ntrailctx.fillStyle = trail[0].c;\ntrailctx.fill();\nvar trailctximg = trailctx.getImageData(0, 0, trailctx.canvas.width, trailctx.canvas.height).data;\nvar gradient = ctx.createRadialGradient(trail[0].x - trail.r, trail[0].y - trail.r, trail.r, trail[0].x + trail.r, trail[0].y + trail.r, trail.r);\ngradient.addColorStop(0, trail[0].c);\ngradient.addColorStop(1, 'rgba(0, 0, 0, 0)');\nctx.fillStyle = gradient;\nctx.fillRect(index * 100, (index * 100 + 10), 50, 5);\nctx.fillStyle = trailctximg.data;\nctx.fillRect(index * 100 + 10, (index * 100 + 5), 50, 50);\n});\ntrails.splice(0, trails.length - 100);\nparticles.forEach(function(particle, index){\nctx.fillStyle = particle.c;\nctx.beginPath();\nctx.arc(particle.x, particle.y, particle.r, 0, 2*Math.PI);\nctx.fill();\nif(particle.y > particle.maxy){\nparticles.splice(index, 1);\n}});\nparticles.slice(0, 100).forEach(function(particle, index){\nvar i = particles.indexOf(particle);\nctx.fillStyle = particle.c;\nctx.beginPath();\nctx.arc(particle.x + i * 20, particle.y + i * 20, particle.r, 0, 2*Math.PI);\nctx.fill();\n});\nshell.vy += gravity;\nshell.x += shell.vx;\nshell.y += shell.vy;\nif(shell.burst){\nshell.burst = false;\nparticles.push({x: x, y: y, c: 'rgba(255, 0, 0, 1)', r: 2, maxy: y + 100});\nparticles.push({x: x, y: y, c: 'rgba(0, 255, 0, 1)', r: 2, maxy: y + 70});\nparticles.push({x: x, y: y, c: 'rgba(0, 0, 255, 1)', r: 2, maxy: y + 140});\nparticles.push({x: x, y: y, c: 'rgba(255, 255, 0, 1)', r: 2, maxy: y + 90});\nshellTimeouts.splice(shellTimeouts.indexOf(function(){\nupdateShell();\n}), 1);\nvar burstTimeouts = [];\nfor(var i = 0; i < 100; i++){\nvar particleTimeouts = [];\nfor(var j = 0; j < 10; j++){\nparticleTimeouts.push(setTimeout(function(){\nparticles.push({x: x + Math.sin(Date.now()), y: y - Math.sin(Date.now()), c: 'rgba(0, 0, 255, 0.5)', r: 1, maxy: y});\n}, 50));\nparticles.push({x: x + Math.sin(Date.now()), y: y - Math.sin(Date.now()), c: 'rgba(0, 0, 255, 0.5)', r: 1, maxy: y});\nparticles.push({x: x + Math.sin(Date.now()), y: y - Math.sin(Date.now()), c: 'rgba(0, 255, 0, 0.5)', r: 1, maxy: y});\n}\n}\n);\nctx.fillStyle = 'rgba(0, 0, 0, 0.3)';\nctx.fillRect(0, 0, canvas.width, canvas.height);\nshellTimeouts.splice(shellTimeouts.indexOf(function(){\nupdateShell();\n}), 1);\n}, 10));\nctx.fillStyle = 'white';\nctx.font = '24px Arial';\nctx.textAlign = 'center';\nctx.textBaseline = 'top';\nctx.fillText('Click to launch a shell...', canvas.width/2, 30);\nsetTimeout(updateShell, 100);\nctx.canvas.width = window.innerWidth;\nctx.canvas.height = window.innerHeight;\nfunction launchBurst(x, y){\nclearTimeout(shellTimeouts[0]);\nshellTimeouts = [];\nshell.burst = true;\n}\nfunction launchShells(){\nlaunchShell(canvas.width/2, canvas.height/2);\nlaunchBurst(canvas.width/2, canvas.height/2)}\nlaunchShells();\nsetInterval(updateShell, 10);\n</script>\n</body>\n</html>\n"}</function><browser>{"action": "reload", "toX": 1920, "toY": 1080}</browser>
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>{"path": "./index.html", "content": "<!DOCTYPE html><html><head><style>body{margin: 0; display: flex; justify-content: center; align-items: center; height: 100vh; overflow: hidden;}#sky{width: 100%; height: 100vh; background-image: linear-gradient(to bottom, #000, #333);}</style></head><body><canvas id=\"sky\" width=\"1920\" height=\"1080\"></canvas><button id=\"clear\">Clear</button><script>var canvas = document.getElementById('sky');var ctx = canvas.getContext('2d');var gravity = 0.1;var particles = [];var trails = [];ctx.canvas.width = window.innerWidth;ctx.canvas.height = window.innerHeight;var shellTimeouts = [];document.getElementById('clear').addEventListener('click', function(){particles = [];trails = [];shellTimeouts = []});canvas.addEventListener('click', function(event){var x = event.clientX;var y = event.clientY;launchShell(x, y);});function launchShell(x, y){var shell = {x: canvas.width/2, y: canvas.height, vx: 0, vy: 0, burst: false, t: Date.now()}shellTimeouts.push(setTimeout(function(){launchBurst(x, y)}, 2000));ctx.beginPath();ctx.arc(shell.x, shell.y, 2, 0, 2*Math.PI);ctx.fillStyle = 'yellow';ctx.fill();function updateShell(){ctx.clearRect(0, 0, canvas.width, canvas.height);ctx.beginPath();ctx.arc(shell.x, shell.y, 2, 0, 2*Math.PI);ctx.fillStyle = 'yellow';ctx.fill();ctx.beginPath();ctx.arc(x, y, 2, 0, 2*Math.PI);ctx.fillStyle = '#00ff00';ctx.fill();ctx.beginPath();ctx.arc(x, y, shell.x - x, 0, 2*Math.PI);ctx.strokeStyle = 'white';ctx.lineWidth = 2;ctx.stroke();ctx.beginPath();ctx.arc(x, y, (shell.x - x) * (1 + (Date.now() - shell.t) / 2000), 0, 2*Math.PI);ctx.strokeStyle = 'blue';ctx.lineWidth = 2;ctx.stroke();ctx.fillStyle = 'rgba(128, 128, 128, 0.2)';ctx.fillRect(0, 0, canvas.width, canvas.height);trails.forEach(function(trail, index){var trailctx = document.createElement('canvas').getContext('2d');trailctx.beginPath();trailctx.arc(trail[0].x, trail[0].y, trail[0].r, 0, 2*Math.PI);trailctx.fillStyle = trail[0].c;trailctx.fill();var trailctximg = trailctx.getImageData(0, 0, trailctx.canvas.width, trailctx.canvas.height).data;var gradient = ctx.createRadialGradient(trail[0].x - trail.r, trail[0].y - trail.r, trail.r, trail[0].x + trail.r, trail[0].y + trail.r, trail.r);gradient.addColorStop(0, trail[0].c);gradient.addColorStop(1, 'rgba(0, 0, 0, 0)');ctx.fillStyle = gradient;ctx.fillRect(index * 100, (index * 100 + 10), 50, 5);ctx.fillStyle = trailctximg.data;ctx.fillRect(index * 100 + 10, (index * 100 + 5), 50, 50);});trails.splice(0, trails.length - 100);particles.forEach(function(particle, index){ctx.fillStyle = particle.c;ctx.beginPath();ctx.arc(particle.x, particle.y, particle.r, 0, 2*Math.PI);ctx.fill();if(particle.y > particle.maxy){particles.splice(index, 1);}});particles.slice(0, 100).forEach(function(particle, index){var i = particles.indexOf(particle);ctx.fillStyle = particle.c;ctx.beginPath();ctx.arc(particle.x + i * 20, particle.y + i * 20, particle.r, 0, 2*Math.PI);ctx.fill();});shell.vy += gravity;shell.x += shell.vx;shell.y += shell.vy;if(shell.burst){shell.burst = false;particles.push({x: x, y: y, c: 'rgba(255, 0, 0, 1)', r: 2, maxy: y + 100});particles.push({x: x, y: y, c: 'rgba(0, 255, 0, 1)', r: 2, maxy: y + 70});particles.push({x: x, y: y, c: 'rgba(0, 0, 255, 1)', r: 2, maxy: y + 140});particles.push({x: x, y: y, c: 'rgba(255, 255, 0, 1)', r: 2, maxy: y + 90});shellTimeouts.splice(shellTimeouts.indexOf(function(){updateShell();}), 1);var burstTimeouts = [];for(var i = 0; i < 100; i++){var particleTimeouts = [];for(var j = 0; j < 10; j++){particleTimeouts.push(setTimeout(function(){particles.push({x: x + Math.sin(Date.now()), y: y - Math.sin(Date.now()), c: 'rgba(0, 0, 255, 0.5)', r: 1, maxy: y});}, 50));particles.push({x: x + Math.sin(Date.now()), y: y - Math.sin(Date.now()), c: 'rgba(0, 0, 255, 0.5)', r: 1, maxy: y});particles.push({x: x + Math.sin(Date.now()), y: y - Math.sin(Date.now()), c: 'rgba(0, 255, 0, 0.5)', r: 1, maxy: y});}});ctx.fillStyle = 'rgba(0, 0, 0, 0.3)';ctx.fillRect(0, 0, canvas.width, canvas.height);shellTimeouts.splice(shellTimeouts.indexOf(function(){updateShell();}), 1);}, 10)));ctx.fillStyle = 'white';ctx.font = '24px Arial';ctx.textAlign = 'center';ctx.textBaseline = 'top';ctx.fillText('Click to launch a shell...', canvas.width/2, 30);setTimeout(updateShell, 100);ctx.canvas.width = window.innerWidth;ctx.canvas.height = window.innerHeight;function launchBurst(x, y){clearTimeout(shellTimeouts[0]);shellTimeouts = [];shell.burst = true;}function launchShells(){launchShell(canvas.width/2, canvas.height/2);launchBurst(canvas.width/2, canvas.height/2)}launchShells();setInterval(updateShell, 10);</script></button></body></html>"}</function>