Piano synth · kimi-k2.5
Using the pre-provided tone.min.js (global Tone), build a playable piano keyboard controlled by mouse and computer keys that synthesizes notes with an ADSR envelope and visual key feedback.
transcript · 8 messages
Using the pre-provided tone.min.js (global Tone), build a playable piano keyboard controlled by mouse and computer keys that synthesizes notes with an ADSR envelope and visual key feedback.
thinking
The user wants a playable piano keyboard using Tone.js. Requirements: 1. Use the provided tone.min.js (global Tone object) 2. Mouse and keyboard control 3. ADSR envelope synthesis 4. Visual key feedback 5. Single index.html file with inline CSS and JS Let me first check what's in the workspace to see if tone.min.js exists.
{"command":"ls -la"}total 388 drwxrwxrwx 3 node node 96 Jul 22 17:53 . drwxr-xr-x 1 root root 4096 Jul 22 17:53 .. -rw-r--r-- 1 node node 349169 Jul 22 17:53 tone.min.js
thinking
tone.min.js is there. Now I'll build a complete piano keyboard with: 1. Visual piano keys (white and black keys) 2. Mouse interaction (click/touch) 3. Keyboard mapping (A-Z keys mapped to notes) 4. Tone.js synth with ADSR envelope 5. Visual feedback (active state when playing) I'll create a nice layout with a piano that spans multiple octaves, probably 2-3 octaves for usability. Keyboard mapping ideas: - A = C4 - W = C#4 - S = D4 - E = D#4 - D = E4 - F = F4 - T = F#4 - G = G4 - Y = G#4 - H = A4 - U = A#4 - J = B4 - K = C5 ... etc I'll use a PolySynth for polyphony so multiple keys can play at once. Let me write the complete index.html.
/workspace/index.html (12427 bytes)Successfully wrote 12427 bytes to /workspace/index.html
thinking
The file is written. Let me verify it looks correct and test that it references tone.min.js correctly.
{"path":"/workspace/index.html","limit":50}<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Piano Synthesizer</title> <script src="tone.min.js"></script> <style> * { margin: 0; padding: 0; box-sizing: border-box; } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%); min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; color: #fff; overflow: hidden; } h1 { margin-bottom: 10px; font-size: 2.5rem; text-shadow: 0 0 20px rgba(100, 200, 255, 0.5); } .instructions { margin-bottom: 20px; color: #aaa; font-size: 0.9rem; text-align: center; } #start-btn { padding: 15px 40px; font-size: 1.2rem; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); border: none; border-radius: 50px; color: white; cursor: pointer; transition: transform 0.2s, box-shadow 0.2s; margin-bottom: 30px; } [357 more lines in file. Use offset=51 to continue.]
thinking
The file is created successfully. It loads tone.min.js locally, has inline CSS and JS, and includes all the requested features: 1. Mouse control - click to play notes 2. Computer keyboard control - A-K for white keys, W-U for black keys (and O-P-; for upper octave) 3. ADSR envelope - adjustable via sliders that update the synth 4. Visual key feedback - active class changes appearance when playing 5. Uses Tone.js PolySynth with triangle oscillator The app is complete and self-contained.
The playable piano keyboard has been built in `/workspace/index.html`. **Features:** - **17 keys** spanning C4 to E5 (2+ octaves) - **Mouse/touch control** - click or tap keys to play - **Keyboard control** - A-K for white keys, W-U and O-P for black keys - **ADSR envelope** - adjustable Attack, Decay, Sustain, Release via sliders - **Visual feedback** - keys depress and glow when active - **Polyphony** - play multiple notes simultaneously **Controls:** | Key | Note | |-----|------| | A, S, D, F, G, H, J, K, L, ; | C4, D4, E4, F4, G4, A4, B4, C5, D5, E5 | | W, E, T, Y, U, O, P | C#4, D#4, F#4, G#4, A#4, C#5, D#5 | The app uses `Tone.PolySynth` with a triangle oscillator and fully adjustable ADSR envelope. Click "Start Audio" to initialize the audio engine.
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
EVALUATION
Piano keyboard with ADSR sliders appears after click; no reaction to arrows/wasd/enter which weren't mapped keys.
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.