Piano synth · llama-3.1-8b-instruct
No runnable output Cost / run $0.0008 Runtime 7.6s
Prompt for this run
Build a playable piano keyboard using the provided Tone.js library. 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. Use the provided `tone.min.js` (global `Tone`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Display one chromatic octave from C4 through C5, with correctly placed black and white keys and visible note labels. - Map computer keys A W S E D F T G Y H U J K in order to those 13 notes. Pressing a screen key or its computer key starts the note; releasing it starts the envelope's release phase. - Use a synthesized voice with an ADSR envelope and support at least three simultaneous notes. Highlight keys while held. Prevent keyboard auto-repeat from creating duplicate sustained voices. - Release held voices when the pointer is released outside a key or the window loses focus, so notes cannot remain stuck. - Activate audio through a user gesture and synthesize all sound without audio files. Display the computer-key mapping. Verify: Play a few notes using the available mouse and keyboard actions. Check note/key labeling, any observable press-and-release highlighting, and the console after audio activation. Briefly inspect the input handlers for matching note-start and note-release behavior.
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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RUN
METRICS
Transcript · 7 messages
Build a playable piano keyboard using the provided Tone.js library. 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. Use the provided `tone.min.js` (global `Tone`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Display one chromatic octave from C4 through C5, with correctly placed black and white keys and visible note labels. - Map computer keys A W S E D F T G Y H U J K in order to those 13 notes. Pressing a screen key or its computer key starts the note; releasing it starts the envelope's release phase. - Use a synthesized voice with an ADSR envelope and support at least three simultaneous notes. Highlight keys while held. Prevent keyboard auto-repeat from creating duplicate sustained voices. - Release held voices when the pointer is released outside a key or the window loses focus, so notes cannot remain stuck. - Activate audio through a user gesture and synthesize all sound without audio files. Display the computer-key mapping. Verify: Play a few notes using the available mouse and keyboard actions. Check note/key labeling, any observable press-and-release highlighting, and the console after audio activation. Briefly inspect the input handlers for matching note-start and note-release behavior.
<write>{`<!DOCTYPE html> <html> <head> <style> body { font-family: Arial, sans-serif; text-align: center; } .piano { width: 600px; margin: 40px auto; position: relative; } .key { width: 50px; height: 150px; float: left; margin-right: 2px; background-color: white; border: 1px solid black; border-radius: 10px; cursor: pointer; } .key.black { background-color: gray; } .key.label { position: absolute; top: 0; font-size: 12px; color: black; } .key.held { transform: scale(1.2); z-index: 1; } </style> </head> <body> <div class="piano"> <div class="key c4 white key-label">C4</div> <div class="key csharp4 black">C#</div> <div class="key ds4 black">D#</div> <div class="key d4 white key-label">D4</div> <div class="key es4 white key-label">E4</div> <div class="key f4 white key-label">F4</div> <div class="key fsharp4 black">F#</div> <div class="key g4 white key-label">G4</div> <div class="key gsharp4 black">G#</div> <div class="key a4 white key-label">A4</div> <div class="key asharp4 black">A#</div> <div class="key b4 white key-label">B4</div> <div class="key c5 white key-label">C5</div> </div> <div id="computer-keymap"> Keyboard map: A W S E D F T G Y H U J K C4 C#4 D#4 D4 E4 F4 F#4 G4 G#4 A4 A#4 B4 C5 </div> <script> class PianoKey { constructor(keyElement) { this.keyElement = keyElement; this.synth = null; this.down = false; this.keyElement.addEventListener('mousedown', () => this.start()); this.keyElement.addEventListener('mouseup', () => this.release()); this.keyElement.addEventListener('touchstart', () => this.start()); this.keyElement.addEventListener('touchend', () => this.release()); } start() { if (!this.down) { this.down = true; this.sythesizeKey(this.keyElement.textContent.substring(0, 2)); this.keyElement.classList.add('held'); } } release() { if (this.down) { this.down = false; this.keyElement.classList.remove('held'); if (this.synth) { this.synth.dispose(); this.synth = null; } } } sythesizeKey(key) { let note; switch (key[0]) { case 'c': note = (key[1] == 'sharp') ? 'C#4' : 'C4'; break; case 'd': note = (key[1] == 'sharp') ? 'D#4' : 'D4'; break; case 'e': note = key; break; case 'f': note = (key[1] == 'sharp') ? 'F#4' : 'F4'; break; case 'g': note = (key[1] == 'sharp') ? 'G#4' : 'G4'; break; case 'a': note = (key[1] == 'sharp') ? 'A#4' : 'A4'; break; case 'b': note = 'B4'; break; default: note = key; break; } console.log(`synthesizing ${note}...`); this.synth = new Tone.Synth().toDestination(); this.synth.oscillator.type = "sawtooth"; this.synthEnvelope = new Tone.ADSR(); this.synthEnvelope.attack = 0.1; this.synthEnvelope.decay = 1; this.synthEnvelope.sustain = 0.3; this.synthEnvelope.release = 2; this.synthEnvelope.connect(this.synth.filter); this.synthEnvelope.triggerAttackRelease("C4", "4n"); this.synth.triggerAttackRelease(note, "4n"); Tone.Transport.start(); } } let keys = document.querySelectorAll('.key'); keys.forEach(keyElement => { new PianoKey(keyElement); }); document.addEventListener('keydown', (event) => { let mapping = ['c4', 'csharp4', 'dsharp4', 'd4', 'e4', 'f4', 'fsharp4', 'g4', 'gsharp4', 'a4', 'asharp4', 'b4', 'c5']; let key = mapping.find(key => event.key.toLowerCase() == 'a' || event.key.toLowerCase() == 'w' || event.key.toLowerCase() == 's' || event.key.toLowerCase() == 'e' || event.key.toLowerCase() == 'd' || event.key.toLowerCase() == 'f' || event.key.toLowerCase() == 't' || event.key.toLowerCase() == 'g' || event.key.toLowerCase() == 'y' || event.key.toLowerCase() == 'h' || event.key.toLowerCase() == 'u' || event.key.toLowerCase() == 'j' || event.key.toLowerCase() == 'k'); if (keys.find(keyElement => keyElement.textContent.substring(0, 2) == key)) { keys.find(keyElement => keyElement.textContent.substring(0, 2) == key)[0].classList.add('held'); keys.find(keyElement => keyElement.textContent.substring(0, 2) == key)[0].style.zIndex = '1'; let synth = new Tone.Synth().toDestination(); synth.oscillator.type = "sawtooth"; let synthEnvelope = new Tone.ADSR(); synthEnvelope.attack = 0.1; synthEnvelope.decay = 1; synthEnvelope.sustain = 0.3; synthEnvelope.release = 2; synthEnvelope.connect(synth.filter); synthEnvelope.triggerAttackRelease("C4", "4n"); synth.triggerAttackRelease(`${key}`, "4n"); Tone.Transport.start(); console.log(`synthesize ${key}...`); } }); document.addEventListener('keyup', (event) => { let mapping = ['c4', 'csharp4', 'dsharp4', 'd4', 'e4', 'f4', 'fsharp4', 'g4', 'gsharp4', 'a4', 'asharp4', 'b4', 'c5']; let key = mapping.find(key => event.key.toLowerCase() == 'a' || event.key.toLowerCase() == 'w' || event.key.toLowerCase() == 's' || event.key.toLowerCase() == 'e' || event.key.toLowerCase() == 'd' || event.key.toLowerCase() == 'f' || event.key.toLowerCase() == 't' || event.key.toLowerCase() == 'g' || event.key.toLowerCase() == 'y' || event.key.toLowerCase() == 'h' || event.key.toLowerCase() == 'u' || event.key.toLowerCase() == 'j' || event.key.toLowerCase() == 'k'); let keyElement = keys.find(keyElement => keyElement.textContent.substring(0, 2) == key); keyElement[0].classList.remove('held'); if (event.key == 'a' || event.key == 's' || event.key == 'k' || event.key == 'u' || event.key == 'e' || event.key == 'w' || event.key == 'd' || event.key == 'f' || event.key == 'h' || event.key == 'y' || event.key == 'g' || event.key == 't' || event.key == 'j' || event.key == 'b') { let synth = keyElement[0].synth; if (synth) { console.log('release...'); synthEnvelope.triggerRelease(); synth.dispose(); synth = null; } } }); </script> </body> </html> `}</write> <browser>action=screenshot</browser> <browser>action=inspect</browser> <prompt>Please activate audio and then click and hold on a key to hear a sound. Click outside a key to stop the sound, or release the mouse button on a key to stop the sound.</prompt> <browser>action=click key=200,400</browser> <browser>action=drag x=350 y=300</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.
<browser>action=reload</browser> <write>{`<!DOCTYPE html> <html> <head> <style> body { font-family: Arial, sans-serif; text-align: center; } .piano { width: 600px; margin: 40px auto; position: relative; } .key { width: 50px; height: 150px; float: left; margin-right: 2px; background-color: white; border: 1px solid black; border-radius: 10px; cursor: pointer; } .key.black { background-color: gray; } .key.label { position: absolute; top: 0; font-size: 12px; color: black; } .key.held { transform: scale(1.2); z-index: 1; } </style> </head> <body> <div class="piano"> <div class="key c4 white key-label">C4</div> <div class="key csharp4 black">C#</div> <div class="key ds4 black">D#</div> <div class="key d4 white key-label">D4</div> <div class="key es4 white key-label">E4</div> <div class="key f4 white key-label">F4</div> <div class="key fsharp4 black">F#</div> <div class="key g4 white key-label">G4</div> <div class="key gsharp4 black">G#</div> <div class="key a4 white key-label">A4</div> <div class="key asharp4 black">A#</div> <div class="key b4 white key-label">B4</div> <div class="key c5 white key-label">C5</div> </div> <div id="computer-keymap"> Keyboard map: A W S E D F T G Y H U J K C4 C#4 D#4 D4 E4 F4 F#4 G4 G#4 A4 A#4 B4 C5 </div> <script src="tone.min.js"></script> <script> class PianoKey { constructor(keyElement) { this.keyElement = keyElement; this.synth = null; this.down = false; this.keyElement.addEventListener('mousedown', () => this.start()); this.keyElement.addEventListener('mouseup', () => this.release()); this.keyElement.addEventListener('touchstart', () => this.start()); this.keyElement.addEventListener('touchend', () => this.release()); } start() { if (!this.down) { this.down = true; this.sythesizeKey(this.keyElement.textContent.substring(0, 2)); this.keyElement.classList.add('held'); } } release() { if (this.down) { this.down = false; this.keyElement.classList.remove('held'); if (this.synth) { this.synth.dispose(); this.synth = null; } } } sythesizeKey(key) { let note; switch (key[0]) { case 'c': note = (key[1] == 'sharp') ? 'C#4' : 'C4'; break; case 'd': note = (key[1] == 'sharp') ? 'D#4' : 'D4'; break; case 'e': note = key; break; case 'f': note = (key[1] == 'sharp') ? 'F#4' : 'F4'; break; case 'g': note = (key[1] == 'sharp') ? 'G#4' : 'G4'; break; case 'a': note = (key[1] == 'sharp') ? 'A#4' : 'A4'; break; case 'b': note = 'B4'; break; default: note = key; break; } console.log(`synthesize ${note}...`); this.synth = new Tone.Synth().toDestination(); this.synth.oscillator.type = "sawtooth"; this.synthEnvelope = new Tone.ADSR(); this.synthEnvelope.attack = 0.1; this.synthEnvelope.decay = 1; this.synthEnvelope.sustain = 0.3; this.synthEnvelope.release = 2; this.synthEnvelope.connect(this.synth.filter); this.synthEnvelope.triggerAttackRelease("C4", "4n"); this.synth.triggerAttackRelease(note, "4n"); Tone.Transport.start(); } } let keys = document.querySelectorAll('.key'); keys.forEach(keyElement => { new PianoKey(keyElement); }); document.addEventListener('keydown', (event) => { let mapping = ['c4', 'csharp4', 'dsharp4', 'd4', 'e4', 'f4', 'fsharp4', 'g4', 'gsharp4', 'a4', 'asharp4', 'b4', 'c5']; let key = mapping.find(key => event.key.toLowerCase() == 'a' || event.key.toLowerCase() == 'w' || event.key.toLowerCase() == 's' || event.key.toLowerCase() == 'e' || event.key.toLowerCase() == 'd' || event.key.toLowerCase() == 'f' || event.key.toLowerCase() == 't' || event.key.toLowerCase() == 'g' || event.key.toLowerCase() == 'y' || event.key.toLowerCase() == 'h' || event.key.toLowerCase() == 'u' || event.key.toLowerCase() == 'j' || event.key.toLowerCase() == 'k'); if (keys.find(keyElement => keyElement.textContent.substring(0, 2) == key)) { keys.find(keyElement => keyElement.textContent.substring(0, 2) == key)[0].classList.add('held'); keys.find(keyElement => keyElement.textContent.substring(0, 2) == key)[0].style.zIndex = '1'; let synth = new Tone.Synth().toDestination(); synth.oscillator.type = "sawtooth"; let synthEnvelope = new Tone.ADSR(); synthEnvelope.attack = 0.1; synthEnvelope.decay = 1; synthEnvelope.sustain = 0.3; synthEnvelope.release = 2; synthEnvelope.connect(synth.filter); synthEnvelope.triggerAttackRelease("C4", "4n"); synth.triggerAttackRelease(`${key}`, "4n"); Tone.Transport.start(); console.log(`synthesize ${key}...`); } }); document.addEventListener('keyup', (event) => { let mapping = ['c4', 'csharp4', 'dsharp4', 'd4', 'e4', 'f4', 'fsharp4', 'g4', 'gsharp4', 'a4', 'asharp4', 'b4', 'c5']; let key = mapping.find(key => event.key.toLowerCase() == 'a' || event.key.toLowerCase() == 'w' || event.key.toLowerCase() == 's' || event.key.toLowerCase() == 'e' || event.key.toLowerCase() == 'd' || event.key.toLowerCase() == 'f' || event.key.toLowerCase() == 't' || event.key.toLowerCase() == 'g' || event.key.toLowerCase() == 'y' || event.key.toLowerCase() == 'h' || event.key.toLowerCase() == 'u' || event.key.toLowerCase() == 'j' || event.key.toLowerCase() == 'k'); let keyElement = keys.find(keyElement => keyElement.textContent.substring(0, 2) == key); keyElement[0].classList.remove('held'); if (event.key == 'a' || event.key == 's' || event.key == 'k' || event.key == 'u' || event.key == 'e' || event.key == 'w' || event.key == 'd' || event.key == 'f' || event.key == 'h' || event.key == 'y' || event.key == 'g' || event.key == 't' || event.key == 'j' || event.key == 'b') { let synth = keyElement[0].synth; if (synth) { console.log('release...'); synthEnvelope.triggerRelease(); synth.dispose(); synth = null; } } }); </script> </body> </html> `}</write> <browser>action=inspect</browser> <browser>action=click key=200,400</browser> <browser>action=drag x=350 y=300</browser> <browser>action=screenshot</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.
<bash>command=node -e 'const fs = require("fs"); fs.writeFileSync("index.html", require("fs").readFileSync("index.html"));'</bash> <browser>action=inspect</browser> <browser>action=click key=200,400</browser> <browser>action=drag x=350 y=300</browser> <browser>action=screenshot</browser> <browser>action=screenshot</browser>