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1538 lines (1408 loc) · 79.8 KB
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>Interactive Piano</title>
<link rel="icon" type="image/svg+xml" href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'><rect width='100' height='100' rx='10' fill='%231a1a2e'/><rect x='10' y='20' width='12' height='60' rx='2' fill='white'/><rect x='24' y='20' width='12' height='60' rx='2' fill='white'/><rect x='38' y='20' width='12' height='60' rx='2' fill='white'/><rect x='52' y='20' width='12' height='60' rx='2' fill='white'/><rect x='66' y='20' width='12' height='60' rx='2' fill='white'/><rect x='80' y='20' width='10' height='60' rx='2' fill='white'/><rect x='18' y='20' width='8' height='35' rx='1' fill='%231a1a2e'/><rect x='32' y='20' width='8' height='35' rx='1' fill='%231a1a2e'/><rect x='60' y='20' width='8' height='35' rx='1' fill='%231a1a2e'/><rect x='74' y='20' width='8' height='35' rx='1' fill='%231a1a2e'/></svg>">
<meta name="theme-color" content="#1a1a2e">
<meta name="apple-mobile-web-app-capable" content="yes">
<style>
* { margin: 0; padding: 0; box-sizing: border-box; }
:root { --primary: #1a1a2e; --secondary: #16213e; --accent: #e94560; --gold: #ffd700; --text: #eee; }
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
min-height: 100vh; color: var(--text); overflow-x: hidden;
}
.app-container { display: flex; flex-direction: column; min-height: 100vh; padding: 8px; }
header { text-align: center; padding: 12px; background: rgba(0,0,0,0.3); border-radius: 12px; margin-bottom: 10px; }
header h1 {
font-size: clamp(1.3rem, 4vw, 2.2rem);
background: linear-gradient(45deg, var(--gold), var(--accent));
-webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.controls-panel {
display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; align-items: center;
padding: 12px; background: rgba(0,0,0,0.3); border-radius: 12px; margin-bottom: 10px;
}
.control-group { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.control-group label { font-size: 0.7rem; color: #aaa; display: none; }
.control-group.show-label label { display: block; }
button {
padding: 10px 16px; border: none; border-radius: 20px; cursor: pointer;
font-size: 0.85rem; font-weight: 600; transition: all 0.2s ease;
background: linear-gradient(145deg, #2d2d4a, #1a1a2e);
color: var(--text); box-shadow: 0 3px 10px rgba(0,0,0,0.3);
display: flex; align-items: center; justify-content: center; gap: 6px;
min-width: 44px; min-height: 44px;
}
button:hover { transform: translateY(-2px); box-shadow: 0 5px 15px rgba(233,69,96,0.3); }
button:active { transform: translateY(0); }
button.active { background: linear-gradient(145deg, var(--accent), #c73e54); }
button.recording { animation: pulse 1s infinite; }
button.play-all-active { background: linear-gradient(145deg, #4caf50, #388e3c); }
button .btn-text { display: inline; }
button .btn-icon { font-size: 1.1rem; }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(233,69,96,0.7); } 50% { box-shadow: 0 0 0 8px rgba(233,69,96,0); } }
select {
padding: 10px 12px; border: none; border-radius: 15px;
background: rgba(255,255,255,0.1); color: var(--text); cursor: pointer;
font-size: 0.85rem; min-height: 44px;
}
select option { background: var(--primary); color: var(--text); }
input[type="range"] {
width: 80px; -webkit-appearance: none; height: 6px;
background: rgba(255,255,255,0.2); border-radius: 3px;
}
input[type="range"]::-webkit-slider-thumb {
-webkit-appearance: none; width: 20px; height: 20px; border-radius: 50%;
background: var(--accent); cursor: pointer;
}
.btn-group { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; }
.piano-container {
flex: 1; display: flex; justify-content: center; align-items: center;
padding: 15px 0; overflow-x: auto; overflow-y: hidden;
-webkit-overflow-scrolling: touch;
}
.piano {
display: flex; position: relative;
background: linear-gradient(180deg, #2a2a2a 0%, #1a1a1a 100%);
padding: 15px 12px 12px; border-radius: 8px;
box-shadow: 0 15px 40px rgba(0,0,0,0.5), inset 0 2px 5px rgba(255,255,255,0.1);
}
.key { position: relative; cursor: pointer; transition: all 0.08s ease; user-select: none; -webkit-tap-highlight-color: transparent; }
.white-key {
width: clamp(32px, 6vw, 50px); height: clamp(140px, 22vh, 200px);
background: linear-gradient(180deg, #fff 0%, #e8e8e8 100%);
border: 1px solid #ccc; border-radius: 0 0 5px 5px; margin: 0 1px;
box-shadow: 0 4px 8px rgba(0,0,0,0.3), inset 0 -4px 8px rgba(0,0,0,0.1);
display: flex; flex-direction: column; justify-content: flex-end; align-items: center; padding-bottom: 8px;
}
.white-key:hover { background: linear-gradient(180deg, #fff 0%, #f5f5f5 100%); }
.white-key.active { background: linear-gradient(180deg, #ddd 0%, #ccc 100%); transform: translateY(2px); box-shadow: 0 2px 4px rgba(0,0,0,0.3); }
.black-key {
position: absolute; width: clamp(22px, 4vw, 32px); height: clamp(85px, 14vh, 130px);
background: linear-gradient(180deg, #3a3a3a 0%, #1a1a1a 100%);
border-radius: 0 0 4px 4px; z-index: 10;
box-shadow: 0 4px 8px rgba(0,0,0,0.5), inset 0 -3px 5px rgba(0,0,0,0.3);
display: flex; flex-direction: column; justify-content: flex-end; align-items: center; padding-bottom: 6px;
}
.black-key:hover { background: linear-gradient(180deg, #4a4a4a 0%, #2a2a2a 100%); }
.black-key.active { background: linear-gradient(180deg, #2a2a2a 0%, #0a0a0a 100%); transform: translateY(2px); }
.key-label { font-size: clamp(7px, 1.2vw, 11px); color: #888; pointer-events: none; }
.black-key .key-label { color: #555; font-size: clamp(6px, 1vw, 9px); }
.display-panel { background: rgba(0,0,0,0.4); border-radius: 12px; padding: 12px; margin-bottom: 10px; }
.display-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.now-playing { font-size: 0.9rem; color: var(--gold); flex: 1; min-width: 150px; }
.playlist-info { font-size: 0.75rem; color: #aaa; }
.recording-indicator { display: none; align-items: center; gap: 5px; color: var(--accent); font-weight: bold; font-size: 0.85rem; }
.recording-indicator.active { display: flex; }
.recording-dot { width: 10px; height: 10px; background: var(--accent); border-radius: 50%; animation: blink 1s infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
.progress-bar { width: 100%; height: 6px; background: rgba(255,255,255,0.1); border-radius: 3px; overflow: hidden; margin-top: 8px; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--gold)); width: 0%; transition: width 0.1s linear; }
.compositions-panel { background: rgba(0,0,0,0.3); border-radius: 12px; padding: 12px; margin-bottom: 10px; }
.compositions-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; flex-wrap: wrap; gap: 8px; }
.compositions-header h3 { color: var(--gold); font-size: 1rem; }
.header-controls { display: flex; gap: 6px; align-items: center; }
.tabs { display: flex; gap: 4px; }
.tab-btn { padding: 6px 12px; background: rgba(255,255,255,0.05); border-radius: 15px; font-size: 0.8rem; min-height: 36px; }
.tab-btn.active { background: rgba(233,69,96,0.3); color: var(--accent); }
.compositions-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; max-height: 250px; overflow-y: auto; padding-right: 4px; }
.composition-item { display: flex; align-items: center; gap: 8px; padding: 10px 12px; background: rgba(255,255,255,0.05); border-radius: 10px; cursor: pointer; transition: all 0.2s ease; position: relative; }
.composition-item:hover { background: rgba(255,255,255,0.1); transform: translateX(3px); }
.composition-item.user-composition { border-left: 3px solid var(--gold); }
.composition-item.now-playing-item { background: rgba(233,69,96,0.2); border-left: 3px solid var(--accent); }
.composition-item.now-playing-item::before { content: "▶"; position: absolute; left: -8px; color: var(--accent); font-size: 0.7rem; }
.composition-item.new-recording { animation: highlightNew 2s ease; }
@keyframes highlightNew { 0%, 100% { background: rgba(255,255,255,0.05); } 50% { background: rgba(255,215,0,0.3); } }
.composition-number { font-size: 0.7rem; color: #666; min-width: 20px; }
.composition-icon { font-size: 1.3rem; }
.composition-info { flex: 1; overflow: hidden; }
.composition-title { font-weight: 600; font-size: 0.85rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.composition-meta { font-size: 0.7rem; color: #888; }
.composition-actions { display: flex; gap: 4px; }
.composition-actions button { padding: 6px 10px; font-size: 0.75rem; min-width: 36px; min-height: 36px; }
.visualizer { height: 50px; background: rgba(0,0,0,0.3); border-radius: 10px; margin-bottom: 10px; overflow: hidden; display: flex; align-items: flex-end; justify-content: center; gap: 2px; padding: 5px; }
.visualizer-bar { width: 3px; background: linear-gradient(180deg, var(--accent), var(--gold)); border-radius: 2px; transition: height 0.1s ease; }
.keyboard-help { background: rgba(0,0,0,0.3); border-radius: 12px; padding: 12px; margin-bottom: 10px; }
.keyboard-help h4 { color: var(--gold); margin-bottom: 8px; font-size: 0.85rem; }
.keyboard-shortcuts { display: flex; flex-wrap: wrap; gap: 6px; font-size: 0.7rem; }
.shortcut-item { display: flex; align-items: center; gap: 3px; background: rgba(255,255,255,0.05); padding: 3px 6px; border-radius: 4px; }
.shortcut-key { padding: 2px 5px; background: rgba(255,255,255,0.15); border-radius: 3px; font-family: monospace; font-weight: bold; }
.modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.85); z-index: 1000; justify-content: center; align-items: center; padding: 15px; }
.modal.active { display: flex; }
.modal-content { background: var(--secondary); border-radius: 15px; padding: 20px; max-width: 400px; width: 100%; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; }
.modal-header h2 { color: var(--gold); font-size: 1.1rem; }
.close-btn { background: none; font-size: 1.3rem; padding: 5px 10px; min-width: auto; min-height: auto; }
.form-group { margin-bottom: 12px; }
.form-group label { display: block; margin-bottom: 4px; color: #aaa; font-size: 0.85rem; }
.form-group input { width: 100%; padding: 10px 12px; border: none; border-radius: 8px; background: rgba(255,255,255,0.1); color: var(--text); font-size: 0.9rem; }
.form-group input:focus { outline: 2px solid var(--accent); }
.file-input-wrapper { position: relative; overflow: hidden; display: inline-block; width: 100%; }
.file-input-wrapper input[type="file"] { position: absolute; left: 0; top: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%; }
.file-input-label { display: block; padding: 12px; background: rgba(255,255,255,0.1); border-radius: 8px; text-align: center; cursor: pointer; border: 2px dashed rgba(255,255,255,0.3); font-size: 0.85rem; }
.file-input-label:hover { border-color: var(--accent); background: rgba(233,69,96,0.1); }
.tab-content { display: none; }
.tab-content.active { display: block; }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: rgba(0,0,0,0.2); border-radius: 3px; }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }
.toast-container { position: fixed; bottom: 15px; right: 15px; z-index: 1001; display: flex; flex-direction: column; gap: 8px; }
.toast { padding: 10px 16px; background: rgba(0,0,0,0.9); border-radius: 8px; color: white; font-size: 0.85rem; animation: slideIn 0.3s ease; border-left: 3px solid var(--accent); max-width: 280px; }
.toast.success { border-left-color: #4caf50; }
.toast.error { border-left-color: #f44336; }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
.loading { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: var(--primary); display: flex; justify-content: center; align-items: center; z-index: 9999; transition: opacity 0.5s ease; }
.loading.hidden { opacity: 0; pointer-events: none; }
.loading-spinner { width: 40px; height: 40px; border: 3px solid rgba(255,255,255,0.1); border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.octave-indicator { display: flex; align-items: center; gap: 4px; background: rgba(255,255,255,0.1); border-radius: 20px; padding: 4px; }
.octave-btn { width: 32px; height: 32px; padding: 0; min-width: 32px; min-height: 32px; display: flex; align-items: center; justify-content: center; font-size: 1rem; border-radius: 50%; }
.octave-display { padding: 0 8px; font-size: 0.85rem; font-weight: bold; color: var(--gold); min-width: 30px; text-align: center; }
@media (max-width: 600px) {
.app-container { padding: 6px; }
header { padding: 10px; margin-bottom: 8px; }
.controls-panel { padding: 10px; gap: 6px; }
button { padding: 8px 12px; font-size: 0.8rem; min-width: 40px; min-height: 40px; }
button .btn-text { display: none; }
button .btn-icon { font-size: 1.2rem; }
select { padding: 8px 10px; font-size: 0.8rem; min-width: 100px; }
input[type="range"] { width: 60px; }
.display-panel { padding: 10px; }
.now-playing { font-size: 0.8rem; }
.compositions-panel { padding: 10px; }
.compositions-list { grid-template-columns: 1fr; max-height: 200px; }
.composition-item { padding: 8px 10px; }
.composition-title { font-size: 0.8rem; }
.keyboard-help { display: none; }
.visualizer { height: 40px; }
.white-key { width: 30px; height: 130px; }
.black-key { width: 20px; height: 80px; }
.key-label { font-size: 7px; }
.header-controls { width: 100%; justify-content: space-between; }
}
@media (max-width: 400px) {
.controls-panel { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.control-group { grid-column: span 2; }
.btn-group { grid-column: span 4; display: grid; grid-template-columns: repeat(6, 1fr); gap: 4px; }
.btn-group button { padding: 8px; }
select { width: 100%; }
.tabs { width: 100%; }
.tab-btn { flex: 1; text-align: center; padding: 8px 6px; font-size: 0.75rem; }
.white-key { width: 28px; height: 120px; }
.black-key { width: 18px; height: 75px; }
}
@media (max-height: 500px) and (orientation: landscape) {
.app-container { padding: 4px; }
header { padding: 6px; margin-bottom: 4px; }
header h1 { font-size: 1rem; }
.controls-panel { padding: 6px; margin-bottom: 4px; }
.display-panel { padding: 6px; margin-bottom: 4px; }
.compositions-panel, .keyboard-help { display: none; }
.visualizer { height: 30px; margin-bottom: 4px; }
.piano-container { padding: 5px 0; }
.white-key { height: 100px; }
.black-key { height: 60px; }
button { padding: 6px 10px; min-height: 36px; }
select { min-height: 36px; padding: 6px 8px; }
}
</style>
</head>
<body>
<div class="loading" id="loading"><div class="loading-spinner"></div></div>
<div class="toast-container" id="toastContainer"></div>
<div class="app-container">
<header><h1>🎹 Interactive Piano</h1></header>
<div class="visualizer" id="visualizer"></div>
<div class="controls-panel">
<div class="control-group show-label">
<label>Volume</label>
<input type="range" id="volumeSlider" min="0" max="100" value="70">
</div>
<div class="control-group">
<div class="octave-indicator">
<button class="octave-btn" id="octaveDown" title="Octave Down">−</button>
<span class="octave-display" id="octaveDisplay">4</span>
<button class="octave-btn" id="octaveUp" title="Octave Up">+</button>
</div>
</div>
<div class="control-group">
<select id="instrumentSelect" title="Instrument">
<option value="piano">🎹 Piano</option>
<option value="electric">⚡ Electric</option>
<option value="organ">🎵 Organ</option>
<option value="synth">🎛️ Synth</option>
</select>
</div>
<div class="btn-group">
<button id="recordBtn" title="Record">
<span class="btn-icon">⏺</span>
<span class="btn-text">Record</span>
</button>
<button id="playBtn" title="Play">
<span class="btn-icon">▶</span>
<span class="btn-text">Play</span>
</button>
<button id="stopBtn" title="Stop">
<span class="btn-icon">⏹</span>
<span class="btn-text">Stop</span>
</button>
<button id="renameBtn" title="Rename Last">
<span class="btn-icon">✏️</span>
<span class="btn-text">Rename</span>
</button>
<button id="uploadBtn" title="Upload">
<span class="btn-icon">📤</span>
<span class="btn-text">Upload</span>
</button>
<button id="downloadBtn" title="Download">
<span class="btn-icon">📥</span>
<span class="btn-text">Download</span>
</button>
</div>
</div>
<div class="display-panel">
<div class="display-header">
<span class="now-playing" id="nowPlaying">🎵 Ready to play</span>
<span class="playlist-info" id="playlistInfo"></span>
<div class="recording-indicator" id="recordingIndicator">
<div class="recording-dot"></div>
<span>REC</span>
</div>
</div>
<div class="progress-bar"><div class="progress-fill" id="progressFill"></div></div>
</div>
<div class="keyboard-help">
<h4>⌨️ Keyboard</h4>
<div class="keyboard-shortcuts">
<div class="shortcut-item"><span class="shortcut-key">A</span>C</div>
<div class="shortcut-item"><span class="shortcut-key">W</span>C#</div>
<div class="shortcut-item"><span class="shortcut-key">S</span>D</div>
<div class="shortcut-item"><span class="shortcut-key">E</span>D#</div>
<div class="shortcut-item"><span class="shortcut-key">D</span>E</div>
<div class="shortcut-item"><span class="shortcut-key">F</span>F</div>
<div class="shortcut-item"><span class="shortcut-key">T</span>F#</div>
<div class="shortcut-item"><span class="shortcut-key">G</span>G</div>
<div class="shortcut-item"><span class="shortcut-key">Y</span>G#</div>
<div class="shortcut-item"><span class="shortcut-key">H</span>A</div>
<div class="shortcut-item"><span class="shortcut-key">U</span>A#</div>
<div class="shortcut-item"><span class="shortcut-key">J</span>B</div>
</div>
</div>
<div class="piano-container"><div class="piano" id="piano"></div></div>
<div class="compositions-panel">
<div class="compositions-header">
<h3>🎵 Library</h3>
<div class="header-controls">
<button id="playAllBtn" title="Play All">
<span class="btn-icon">🔁</span>
<span class="btn-text">Play All</span>
</button>
<div class="tabs">
<button class="tab-btn active" data-tab="preinstalled">Classics</button>
<button class="tab-btn" data-tab="myrecordings">My Songs</button>
</div>
</div>
</div>
<div class="tab-content active" id="preinstalled">
<div class="compositions-list" id="preinstalledList"></div>
</div>
<div class="tab-content" id="myrecordings">
<div class="compositions-list" id="myRecordingsList"></div>
</div>
</div>
</div>
<div class="modal" id="renameModal">
<div class="modal-content">
<div class="modal-header">
<h2>✏️ Rename Recording</h2>
<button class="close-btn" onclick="closeRenameModal()">×</button>
</div>
<div class="form-group">
<label>Song Name</label>
<input type="text" id="renameInput" placeholder="Enter new name...">
</div>
<button onclick="confirmRename()" style="width:100%;">
<span class="btn-icon">💾</span>
<span class="btn-text">Save</span>
</button>
</div>
</div>
<div class="modal" id="uploadModal">
<div class="modal-content">
<div class="modal-header">
<h2>📤 Upload Song</h2>
<button class="close-btn" onclick="closeUploadModal()">×</button>
</div>
<div class="form-group">
<div class="file-input-wrapper">
<div class="file-input-label">📁 Tap to upload JSON file</div>
<input type="file" id="fileInput" accept=".json">
</div>
</div>
</div>
</div>
<script>
function showToast(message, type = '') {
const container = document.getElementById('toastContainer');
const toast = document.createElement('div');
toast.className = `toast ${type}`;
toast.textContent = message;
container.appendChild(toast);
setTimeout(() => toast.remove(), 3000);
}
function closeRenameModal() { document.getElementById('renameModal').classList.remove('active'); }
function closeUploadModal() { document.getElementById('uploadModal').classList.remove('active'); }
let renameTargetId = null;
function confirmRename() {
const name = document.getElementById('renameInput').value.trim();
if (!name) { showToast('Please enter a name', 'error'); return; }
if (renameTargetId && piano) {
const recording = piano.userRecordings.find(r => r.id === renameTargetId);
if (recording) {
recording.name = name;
piano.saveState();
piano.renderCompositions();
showToast('Renamed successfully!', 'success');
}
}
closeRenameModal();
}
class PianoSound {
constructor() {
this.audioContext = null;
this.masterGain = null;
this.volume = 0.7;
this.instrument = 'piano';
this.activeOscillators = new Map();
this.noteFrequencies = {};
this.initFrequencies();
}
initFrequencies() {
const notes = ['C', 'C#', 'D', 'D#', 'E', 'F', 'F#', 'G', 'G#', 'A', 'A#', 'B'];
for (let octave = 0; octave <= 8; octave++) {
notes.forEach((note, idx) => {
const key = `${note}${octave}`;
const halfSteps = (octave - 4) * 12 + (idx - 9);
this.noteFrequencies[key] = 440 * Math.pow(2, halfSteps / 12);
});
}
}
init() {
if (!this.audioContext) {
this.audioContext = new (window.AudioContext || window.webkitAudioContext)();
this.masterGain = this.audioContext.createGain();
this.masterGain.gain.value = this.volume;
const compressor = this.audioContext.createDynamicsCompressor();
compressor.threshold.value = -50;
compressor.knee.value = 40;
compressor.ratio.value = 12;
compressor.attack.value = 0;
compressor.release.value = 0.25;
this.masterGain.connect(compressor);
compressor.connect(this.audioContext.destination);
}
if (this.audioContext.state === 'suspended') this.audioContext.resume();
}
setVolume(v) { this.volume = v; if (this.masterGain) this.masterGain.gain.value = v; }
setInstrument(i) { this.instrument = i; }
getFrequency(note, octave) { return this.noteFrequencies[`${note}${octave}`] || 440; }
playNote(note, octave) {
this.init();
const key = `${note}${octave}`;
if (this.activeOscillators.has(key)) this.stopNote(note, octave);
const freq = this.getFrequency(note, octave);
const now = this.audioContext.currentTime;
const noteGain = this.audioContext.createGain();
noteGain.connect(this.masterGain);
const oscillators = [];
if (this.instrument === 'piano') {
[1, 2, 3, 4, 5, 6, 8].forEach((h, i) => {
const amps = [0.4, 0.2, 0.15, 0.1, 0.08, 0.06, 0.04];
const osc = this.audioContext.createOscillator();
const oscGain = this.audioContext.createGain();
osc.type = 'sine';
osc.frequency.setValueAtTime(freq * h, now);
oscGain.gain.setValueAtTime(amps[i], now);
osc.connect(oscGain);
oscGain.connect(noteGain);
osc.start(now);
oscillators.push(osc);
});
noteGain.gain.setValueAtTime(0, now);
noteGain.gain.linearRampToValueAtTime(0.8, now + 0.01);
noteGain.gain.exponentialRampToValueAtTime(0.3, now + 0.3);
noteGain.gain.exponentialRampToValueAtTime(0.1, now + 2);
} else if (this.instrument === 'electric') {
['sine', 'triangle'].forEach((type, i) => {
const osc = this.audioContext.createOscillator();
const g = this.audioContext.createGain();
osc.type = type;
osc.frequency.setValueAtTime(freq * (i === 0 ? 1 : 2), now);
g.gain.setValueAtTime(i === 0 ? 0.4 : 0.15, now);
osc.connect(g); g.connect(noteGain);
osc.start(now);
oscillators.push(osc);
});
noteGain.gain.setValueAtTime(0, now);
noteGain.gain.linearRampToValueAtTime(0.7, now + 0.02);
noteGain.gain.exponentialRampToValueAtTime(0.3, now + 0.3);
} else if (this.instrument === 'organ') {
[0.5, 1, 2, 3, 4, 6, 8].forEach((h, i) => {
const amps = [0.3, 0.5, 0.4, 0.3, 0.2, 0.15, 0.1];
const osc = this.audioContext.createOscillator();
const oscGain = this.audioContext.createGain();
osc.type = 'sine';
osc.frequency.setValueAtTime(freq * h, now);
oscGain.gain.setValueAtTime(amps[i], now);
osc.connect(oscGain);
oscGain.connect(noteGain);
osc.start(now);
oscillators.push(osc);
});
noteGain.gain.setValueAtTime(0, now);
noteGain.gain.linearRampToValueAtTime(0.5, now + 0.05);
} else if (this.instrument === 'synth') {
const osc1 = this.audioContext.createOscillator();
const osc2 = this.audioContext.createOscillator();
osc1.type = 'sawtooth'; osc2.type = 'square';
osc1.frequency.setValueAtTime(freq, now);
osc2.frequency.setValueAtTime(freq * 1.005, now);
const filter = this.audioContext.createBiquadFilter();
filter.type = 'lowpass';
filter.frequency.setValueAtTime(freq * 8, now);
filter.frequency.exponentialRampToValueAtTime(freq * 2, now + 0.5);
filter.Q.setValueAtTime(5, now);
const g1 = this.audioContext.createGain();
const g2 = this.audioContext.createGain();
g1.gain.setValueAtTime(0.25, now);
g2.gain.setValueAtTime(0.15, now);
osc1.connect(g1); osc2.connect(g2);
g1.connect(filter); g2.connect(filter);
filter.connect(noteGain);
osc1.start(now); osc2.start(now);
oscillators.push(osc1, osc2);
noteGain.gain.setValueAtTime(0, now);
noteGain.gain.linearRampToValueAtTime(0.6, now + 0.03);
noteGain.gain.exponentialRampToValueAtTime(0.3, now + 0.3);
}
this.activeOscillators.set(key, { oscillators, noteGain });
this.updateVisualizer(freq);
}
stopNote(note, octave) {
const key = `${note}${octave}`;
const active = this.activeOscillators.get(key);
if (active) {
const { oscillators, noteGain } = active;
const now = this.audioContext.currentTime;
const release = this.instrument === 'organ' ? 0.1 : 0.3;
noteGain.gain.cancelScheduledValues(now);
noteGain.gain.setValueAtTime(noteGain.gain.value, now);
noteGain.gain.exponentialRampToValueAtTime(0.001, now + release);
oscillators.forEach(osc => osc.stop(now + release + 0.1));
this.activeOscillators.delete(key);
}
}
updateVisualizer(freq) {
const bars = document.querySelectorAll('.visualizer-bar');
const nf = Math.log2(freq / 100);
bars.forEach((bar, i) => {
const h = Math.min(Math.random() * 25 + nf * 6 + 8, 45);
bar.style.height = `${h}px`;
setTimeout(() => bar.style.height = '4px', 120 + i * 8);
});
}
}
// Accurate Public Domain Melodies
const MELODIES = {
"Für Elise - Beethoven": [
"E5 2", "D#5 2", "E5 2", "D#5 2", "E5 2", "B4 2", "D5 2", "C5 2",
"A4 4", "r 2", "C4 2", "E4 2", "A4 2", "B4 4", "r 2", "E4 2",
"G#4 2", "B4 2", "C5 4", "r 2", "E4 2", "E5 2", "D#5 2", "E5 2",
"D#5 2", "E5 2", "B4 2", "D5 2", "C5 2", "A4 4", "r 2", "C4 2",
"E4 2", "A4 2", "B4 4", "r 2", "E4 2", "C5 2", "B4 2", "A4 8"
],
"Ode to Joy - Beethoven": [
"E4 4", "E4 4", "F4 4", "G4 4", "G4 4", "F4 4", "E4 4", "D4 4",
"C4 4", "C4 4", "D4 4", "E4 4", "E4 6", "D4 2", "D4 8",
"E4 4", "E4 4", "F4 4", "G4 4", "G4 4", "F4 4", "E4 4", "D4 4",
"C4 4", "C4 4", "D4 4", "E4 4", "D4 6", "C4 2", "C4 8",
"D4 4", "D4 4", "E4 4", "C4 4", "D4 4", "E4 2", "F4 2", "E4 4", "C4 4",
"D4 4", "E4 2", "F4 2", "E4 4", "D4 4", "C4 4", "D4 4", "G3 8",
"E4 4", "E4 4", "F4 4", "G4 4", "G4 4", "F4 4", "E4 4", "D4 4",
"C4 4", "C4 4", "D4 4", "E4 4", "D4 6", "C4 2", "C4 8"
],
"Moonlight Sonata - Beethoven": [
"G#3 2", "C#4 2", "E4 2", "G#3 2", "C#4 2", "E4 2", "G#3 2", "C#4 2", "E4 2", "G#3 2", "C#4 2", "E4 2",
"G#3 2", "C#4 2", "E4 2", "G#3 2", "C#4 2", "E4 2", "G#3 2", "C#4 2", "E4 2", "G#3 2", "C#4 2", "E4 2",
"A3 2", "C#4 2", "E4 2", "A3 2", "C#4 2", "E4 2", "A3 2", "C#4 2", "E4 2", "A3 2", "C#4 2", "E4 2",
"G#3 2", "B3 2", "E4 2", "G#3 2", "B3 2", "E4 2", "G#3 2", "B3 2", "E4 2", "G#3 2", "B3 2", "E4 2",
"G#3 2", "C#4 2", "E4 2", "G#3 2", "C#4 2", "E4 2", "G#3 2", "C#4 2", "E4 2", "G#3 2", "C#4 2", "E4 2",
"F#3 2", "B3 2", "D#4 2", "F#3 2", "B3 2", "D#4 2", "E3 2", "G#3 2", "E4 2", "E4 8"
],
"Canon in D - Pachelbel": [
"F#5 8", "E5 8", "D5 8", "C#5 8", "B4 8", "A4 8", "B4 8", "C#5 8",
"D5 4", "F#4 4", "G4 4", "A4 4", "D4 4", "F#4 4", "G4 4", "A4 4",
"B4 4", "D4 4", "E4 4", "F#4 4", "G4 4", "F#4 4", "E4 4", "D4 4",
"E4 4", "G4 4", "F#4 4", "E4 4", "D4 4", "C#4 4", "D4 4", "E4 4",
"F#4 4", "A4 4", "G4 4", "F#4 4", "E4 4", "D4 4", "E4 4", "F#4 4",
"G4 4", "B4 4", "A4 4", "G4 4", "F#4 4", "E4 4", "F#4 4", "G4 4",
"A4 8", "D5 8", "C#5 8", "D5 8"
],
"Turkish March - Mozart": [
"B4 2", "A4 2", "G#4 2", "A4 2", "C5 4", "r 4", "D5 2", "C5 2",
"B4 2", "C5 2", "E5 4", "r 4", "F5 2", "E5 2", "D#5 2", "E5 2",
"B5 2", "A5 2", "G#5 2", "A5 2", "B5 2", "A5 2", "G#5 2", "A5 2", "C6 8",
"A5 4", "C6 4", "B5 4", "A5 4", "G5 4", "A5 4", "B5 4", "A5 4",
"G5 4", "F#5 4", "E5 8"
],
"Eine Kleine Nachtmusik - Mozart": [
"G4 4", "r 2", "D4 2", "G4 4", "r 2", "D4 2",
"G4 2", "D4 2", "G4 2", "B4 2", "D5 4", "r 4",
"C5 4", "r 2", "A4 2", "C5 4", "r 2", "A4 2",
"C5 2", "A4 2", "F#4 2", "A4 2", "D4 4", "r 4",
"G4 2", "A4 2", "B4 2", "C5 2", "D5 4", "G4 4",
"D5 4", "G4 4", "D5 2", "E5 2", "D5 2", "C5 2", "B4 2", "A4 2", "B4 2", "C5 2",
"D5 4", "G4 4", "G4 4"
],
"Minuet in G - Bach": [
"D5 4", "G4 2", "A4 2", "B4 2", "C5 2", "D5 4", "G4 4", "G4 4",
"E5 4", "C5 2", "D5 2", "E5 2", "F#5 2", "G5 4", "G4 4", "G4 4",
"C5 4", "D5 2", "C5 2", "B4 2", "A4 2", "B4 4", "C5 2", "B4 2", "A4 2", "G4 2",
"F#4 4", "G4 2", "A4 2", "B4 2", "G4 2", "A4 8",
"D5 4", "G4 2", "A4 2", "B4 2", "C5 2", "D5 4", "G4 4", "G4 4",
"E5 4", "C5 2", "D5 2", "E5 2", "F#5 2", "G5 4", "G4 4", "G4 4",
"C5 4", "D5 2", "C5 2", "B4 2", "A4 2", "B4 4", "C5 2", "B4 2", "A4 2", "G4 2",
"A4 4", "B4 2", "A4 2", "G4 2", "F#4 2", "G4 8"
],
"Prelude in C - Bach": [
"C4 1", "E4 1", "G4 1", "C5 1", "E5 1", "G4 1", "C5 1", "E5 1",
"C4 1", "E4 1", "G4 1", "C5 1", "E5 1", "G4 1", "C5 1", "E5 1",
"C4 1", "D4 1", "A4 1", "D5 1", "F5 1", "A4 1", "D5 1", "F5 1",
"C4 1", "D4 1", "A4 1", "D5 1", "F5 1", "A4 1", "D5 1", "F5 1",
"B3 1", "D4 1", "G4 1", "D5 1", "F5 1", "G4 1", "D5 1", "F5 1",
"B3 1", "D4 1", "G4 1", "D5 1", "F5 1", "G4 1", "D5 1", "F5 1",
"C4 1", "E4 1", "G4 1", "C5 1", "E5 1", "G4 1", "C5 1", "E5 1",
"C4 1", "E4 1", "G4 1", "C5 1", "E5 1", "G4 1", "C5 1", "E5 1",
"C4 1", "E4 1", "A4 1", "E5 1", "A5 1", "A4 1", "E5 1", "A5 1",
"C4 1", "D4 1", "F#4 1", "A4 1", "D5 1", "F#4 1", "A4 1", "D5 1",
"B3 1", "D4 1", "G4 1", "D5 1", "G5 1", "G4 1", "D5 1", "G5 1",
"C4 8", "E4 8", "G4 8", "C5 16"
],
"Waltz in A Minor - Chopin": [
"E5 4", "D#5 2", "E5 2", "B4 4", "E5 4", "D#5 2", "E5 2", "B4 4",
"C5 4", "A4 4", "A4 4", "r 4",
"E5 4", "D#5 2", "E5 2", "B4 4", "E5 4", "D#5 2", "E5 2", "B4 4",
"C5 4", "A4 4", "A4 4", "r 4",
"E5 4", "E5 4", "F5 4", "E5 4", "D5 4", "C5 4",
"B4 4", "A4 4", "G#4 4", "A4 4", "B4 4", "C5 4",
"D5 4", "E5 4", "F5 4", "E5 4", "D5 4", "C5 4",
"B4 4", "A4 4", "G#4 4", "A4 4", "B4 4", "E4 4", "A4 8"
],
"Nocturne Op.9 No.2 - Chopin": [
"Bb4 8", "r 4", "G4 2", "Bb4 2", "D5 4", "F5 4",
"Eb5 8", "r 4", "C5 2", "Eb5 2", "G5 4", "Bb5 4",
"Ab5 4", "G5 4", "F5 4", "Eb5 4", "D5 4", "C5 4",
"Bb4 8", "r 4", "G4 2", "Bb4 2", "D5 4", "F5 4",
"Eb5 8", "r 4", "C5 2", "Eb5 2", "G5 4", "Bb5 4",
"Ab5 4", "G5 4", "F5 4", "Eb5 4", "D5 4", "Eb5 4", "F5 8"
],
"Spring - Vivaldi": [
"E5 4", "F#5 4", "E5 4", "D#5 4", "E5 8", "B4 8",
"E5 4", "F#5 4", "E5 4", "D#5 4", "E5 8", "B4 8",
"E5 2", "E5 2", "F#5 2", "F#5 2", "G#5 2", "G#5 2", "A5 2", "A5 2",
"G#5 4", "F#5 4", "E5 8",
"E5 4", "F#5 4", "E5 4", "D#5 4", "E5 8", "B4 8",
"E5 4", "F#5 4", "E5 4", "D#5 4", "E5 8", "B4 8",
"B5 4", "A5 4", "G#5 4", "F#5 4", "E5 4", "D#5 4", "E5 8"
],
"Habanera - Bizet": [
"D4 4", "Eb4 4", "E4 4", "F4 4", "E4 4", "Eb4 4", "D4 4", "C#4 4", "D4 8", "r 8",
"D4 4", "Eb4 4", "E4 4", "F4 4", "E4 4", "Eb4 4", "D4 4", "C#4 4", "D4 8", "r 8",
"A4 4", "G4 4", "F4 4", "E4 4", "D4 4", "C#4 4", "D4 4", "E4 4", "F4 8", "r 8",
"A4 4", "G4 4", "F4 4", "E4 4", "D4 4", "C#4 4", "D4 8", "r 8",
"D4 4", "Eb4 4", "E4 4", "F4 4", "E4 4", "Eb4 4", "D4 4", "C#4 4", "D4 8"
],
"Greensleeves": [
"A4 4", "C5 8", "D5 4", "E5 6", "F5 2", "E5 4",
"D5 8", "B4 4", "G4 6", "A4 2", "B4 4",
"C5 8", "A4 4", "A4 6", "G#4 2", "A4 4",
"B4 8", "G#4 4", "E4 8",
"A4 4", "C5 8", "D5 4", "E5 6", "F5 2", "E5 4",
"D5 8", "B4 4", "G4 6", "A4 2", "B4 4",
"C5 6", "B4 2", "A4 4", "G#4 6", "F#4 2", "G#4 4", "A4 16",
"G5 12", "G5 6", "F#5 2", "E5 4",
"D5 8", "B4 4", "G4 6", "A4 2", "B4 4",
"C5 8", "A4 4", "A4 6", "G#4 2", "A4 4",
"B4 8", "G#4 4", "E4 8",
"G5 12", "G5 6", "F#5 2", "E5 4",
"D5 8", "B4 4", "G4 6", "A4 2", "B4 4",
"C5 6", "B4 2", "A4 4", "G#4 6", "F#4 2", "G#4 4", "A4 16"
],
"Amazing Grace": [
"G3 4", "C4 8", "E4 2", "C4 2", "E4 8", "D4 4",
"C4 8", "A3 4", "G3 8", "G3 4",
"C4 8", "E4 2", "C4 2", "E4 8", "D4 8", "G4 8",
"G4 4", "E4 8", "G4 2", "E4 2", "G4 2", "E4 2",
"E4 8", "D4 4", "C4 8", "A3 4",
"G3 8", "G3 4", "C4 8", "E4 2", "C4 2",
"E4 8", "D4 4", "C4 16"
],
"Twinkle Twinkle Little Star": [
"C4 4", "C4 4", "G4 4", "G4 4", "A4 4", "A4 4", "G4 8",
"F4 4", "F4 4", "E4 4", "E4 4", "D4 4", "D4 4", "C4 8",
"G4 4", "G4 4", "F4 4", "F4 4", "E4 4", "E4 4", "D4 8",
"G4 4", "G4 4", "F4 4", "F4 4", "E4 4", "E4 4", "D4 8",
"C4 4", "C4 4", "G4 4", "G4 4", "A4 4", "A4 4", "G4 8",
"F4 4", "F4 4", "E4 4", "E4 4", "D4 4", "D4 4", "C4 8"
],
"Happy Birthday": [
"C4 3", "C4 1", "D4 4", "C4 4", "F4 4", "E4 8",
"C4 3", "C4 1", "D4 4", "C4 4", "G4 4", "F4 8",
"C4 3", "C4 1", "C5 4", "A4 4", "F4 4", "E4 4", "D4 8",
"Bb4 3", "Bb4 1", "A4 4", "F4 4", "G4 4", "F4 8"
],
"Jingle Bells": [
"E4 4", "E4 4", "E4 8",
"E4 4", "E4 4", "E4 8",
"E4 4", "G4 4", "C4 4", "D4 4", "E4 16",
"F4 4", "F4 4", "F4 4", "F4 4",
"F4 4", "E4 4", "E4 4", "E4 2", "E4 2",
"E4 4", "D4 4", "D4 4", "E4 4", "D4 8", "G4 8",
"E4 4", "E4 4", "E4 8",
"E4 4", "E4 4", "E4 8",
"E4 4", "G4 4", "C4 4", "D4 4", "E4 16",
"F4 4", "F4 4", "F4 4", "F4 4",
"F4 4", "E4 4", "E4 4", "E4 2", "E4 2",
"G4 4", "G4 4", "F4 4", "D4 4", "C4 16"
],
"Silent Night": [
"G4 6", "A4 2", "G4 4", "E4 12",
"G4 6", "A4 2", "G4 4", "E4 12",
"D5 8", "D5 4", "B4 12",
"C5 8", "C5 4", "G4 12",
"A4 8", "A4 4", "C5 6", "B4 2", "A4 4",
"G4 6", "A4 2", "G4 4", "E4 12",
"A4 8", "A4 4", "C5 6", "B4 2", "A4 4",
"G4 6", "A4 2", "G4 4", "E4 12",
"D5 8", "D5 4", "F5 6", "D5 2", "B4 4",
"C5 12", "E5 12",
"C5 8", "G4 4", "E4 4", "G4 6", "F4 2", "E4 4", "C4 16"
],
"Carol of the Bells": [
"A4 2", "G#4 2", "A4 2", "F#4 2",
"A4 2", "G#4 2", "A4 2", "F#4 2",
"A4 2", "G#4 2", "A4 2", "F#4 2",
"A4 2", "G#4 2", "A4 2", "F#4 2",
"B4 2", "A#4 2", "B4 2", "G#4 2",
"B4 2", "A#4 2", "B4 2", "G#4 2",
"C#5 2", "B4 2", "C#5 2", "A4 2",
"C#5 2", "B4 2", "C#5 2", "A4 2",
"D5 2", "C#5 2", "D5 2", "B4 2",
"D5 2", "C#5 2", "D5 2", "B4 2",
"A4 2", "G#4 2", "A4 2", "F#4 2",
"A4 2", "G#4 2", "A4 2", "F#4 2",
"A4 8"
],
"Scarborough Fair": [
"A4 8", "A4 4", "E4 4", "A4 4", "B4 4",
"C5 8", "B4 4", "A4 8",
"G4 4", "A4 4", "E4 4", "D4 8", "A3 16",
"A4 8", "D5 4", "D5 4", "D5 4", "C5 4",
"B4 8", "A4 4", "B4 4", "C5 4", "B4 4", "A4 4", "G4 8",
"A4 8", "A4 4", "G4 4", "E4 4", "G4 4",
"A4 8", "G4 4", "E4 8", "D4 8", "A3 16"
],
"Auld Lang Syne": [
"G3 4", "C4 8", "C4 4", "C4 8", "E4 4",
"D4 8", "C4 4", "D4 8", "E4 4", "D4 8",
"C4 8", "C4 4", "E4 8", "G4 4", "A4 16",
"A4 4", "G4 8", "E4 4", "E4 8", "C4 4",
"D4 8", "C4 4", "D4 4", "E4 2", "D4 2",
"C4 8", "A3 4", "A3 4", "G3 8", "C4 16"
],
"La Marseillaise": [
"G4 4", "G4 4", "G4 4", "C5 8", "C5 4",
"D5 8", "D5 4", "G5 4", "E5 4", "C5 4", "C5 4", "A4 4", "F5 8",
"E5 4", "E5 4", "E5 4", "F5 4", "E5 4", "D5 4", "D5 4",
"C5 4", "C5 4", "B4 4", "C5 4", "D5 4", "E5 8",
"D5 4", "C5 4", "C5 4", "B4 4", "C5 4", "D5 4",
"E5 4", "F5 4", "E5 4", "D5 4", "C5 4", "B4 4", "C5 16"
],
"Danny Boy": [
"C4 4", "E4 4", "G4 4", "A4 4", "G4 8", "E4 4", "D4 4",
"C4 8", "D4 4", "E4 4", "G4 8", "E4 4", "D4 4", "C4 16",
"C4 4", "E4 4", "G4 4", "A4 4", "G4 8", "E4 4", "D4 4",
"C4 8", "D4 4", "E4 4", "G4 8", "E4 4", "D4 4", "C4 16",
"A4 4", "C5 4", "D5 4", "E5 4", "D5 8", "C5 4", "A4 4",
"G4 8", "A4 4", "C5 4", "D5 8", "C5 4", "A4 4", "G4 16",
"C4 4", "E4 4", "G4 4", "A4 4", "G4 8", "E4 4", "D4 4",
"C4 8", "D4 4", "E4 4", "G4 8", "E4 4", "D4 4", "C4 16"
],
"Brahms Lullaby": [
"G4 3", "G4 3", "Bb4 8",
"G4 3", "G4 3", "Bb4 8",
"G4 8", "Bb4 4", "D5 8", "C5 8",
"A4 8", "Bb4 4", "C5 8", "Bb4 16",
"F4 8", "G4 4", "A4 8", "Bb4 16",
"G4 3", "G4 3", "Bb4 8",
"G4 3", "G4 3", "Bb4 8",
"G4 8", "Bb4 4", "D5 8", "C5 8",
"A4 8", "Bb4 4", "C5 8", "Bb4 16",
"D5 8", "D5 4", "C5 8", "A4 8",
"Bb4 8", "Bb4 4", "A4 8", "F4 8",
"G4 8", "Bb4 4", "A4 8", "G4 8",
"F4 8", "G4 4", "A4 8", "Bb4 16"
],
"Mary Had a Little Lamb": [
"E4 4", "D4 4", "C4 4", "D4 4", "E4 4", "E4 4", "E4 8",
"D4 4", "D4 4", "D4 8", "E4 4", "G4 4", "G4 8",
"E4 4", "D4 4", "C4 4", "D4 4", "E4 4", "E4 4", "E4 4", "E4 4",
"D4 4", "D4 4", "E4 4", "D4 4", "C4 16"
],
"London Bridge": [
"G4 4", "A4 2", "G4 2", "F4 4", "E4 4", "F4 4", "G4 8",
"D4 4", "E4 4", "F4 8", "E4 4", "F4 4", "G4 8",
"G4 4", "A4 2", "G4 2", "F4 4", "E4 4", "F4 4", "G4 8",
"D4 8", "G4 4", "E4 4", "C4 16"
],
"Row Row Row Your Boat": [
"C4 6", "C4 6", "C4 4", "D4 2", "E4 8",
"E4 4", "D4 2", "E4 4", "F4 2", "G4 16",
"C5 2", "C5 2", "C5 2", "G4 2", "G4 2", "G4 2",
"E4 2", "E4 2", "E4 2", "C4 2", "C4 2", "C4 2",
"G4 4", "F4 2", "E4 4", "D4 2", "C4 16"
],
"When The Saints Go Marching In": [
"C4 4", "E4 4", "F4 4", "G4 12",
"C4 4", "E4 4", "F4 4", "G4 12",
"C4 4", "E4 4", "F4 4", "G4 8", "E4 8", "C4 8", "E4 8", "D4 12",
"E4 4", "E4 4", "D4 4", "C4 8", "C4 4", "E4 8", "G4 8", "G4 4", "F4 12",
"E4 4", "F4 4", "G4 8", "E4 8", "C4 8", "D4 8", "C4 16"
]
};
function parseMelody(melodyArray) {
const notes = [];
let time = 0;
const tempo = 120;
const sixteenthNote = (60 / tempo / 4) * 1000;
melodyArray.forEach(item => {
const parts = item.trim().split(' ');
if (parts.length !== 2) return;
const noteStr = parts[0];
const duration = parseInt(parts[1]) * sixteenthNote;
if (noteStr === 'r') {
time += duration;
return;
}
let note, octave;
if (noteStr.length === 2) {
note = noteStr[0];
octave = parseInt(noteStr[1]);
} else if (noteStr.length === 3) {
if (noteStr[1] === '#') {
note = noteStr[0] + '#';
octave = parseInt(noteStr[2]);
} else if (noteStr[1] === 'b') {
const flatToSharp = {
'Db': 'C#', 'Eb': 'D#', 'Fb': 'E', 'Gb': 'F#',
'Ab': 'G#', 'Bb': 'A#', 'Cb': 'B'
};
const flatNote = noteStr[0] + 'b';
note = flatToSharp[flatNote] || noteStr[0];
octave = parseInt(noteStr[2]);
}
}
if (note && !isNaN(octave)) {
const noteOnTime = time;
const noteOffTime = time + duration - 30;
notes.push({ type: 'noteOn', note, octave, time: noteOnTime });
notes.push({ type: 'noteOff', note, octave, time: noteOffTime });
}
time += duration;
});
return notes;
}
const preinstalledCompositions = Object.entries(MELODIES).map(([name, melody], idx) => {
const notes = parseMelody(melody);
return {
id: idx + 1,
name,
notes,
duration: notes.length > 0 ? notes[notes.length - 1].time + 200 : 0
};
});
class Piano {
constructor() {
this.sound = new PianoSound();
this.octave = 4;
this.isRecording = false;
this.isPlaying = false;
this.isPlayingAll = false;
this.currentPlayingIndex = -1;
this.recording = [];
this.recordingStartTime = 0;
this.currentComposition = null;
this.playbackTimeouts = [];
this.userRecordings = [];
this.activeKeys = new Set();
this.lastSavedRecordingId = null;
this.keyboardMap = { 'a':'C','w':'C#','s':'D','e':'D#','d':'E','f':'F','t':'F#','g':'G','y':'G#','h':'A','u':'A#','j':'B','k':'C+','o':'C#+','l':'D+' };
this.init();
}
init() {
this.createPiano();
this.createVisualizer();
this.setupEventListeners();
this.loadState();
this.renderCompositions();
this.updateOctaveDisplay();
setTimeout(() => document.getElementById('loading').classList.add('hidden'), 500);
}
createPiano() {
const piano = document.getElementById('piano');
piano.innerHTML = '';
const whiteNotes = ['C','D','E','F','G','A','B'];
const blackNotes = ['C#','D#',null,'F#','G#','A#',null];
const whiteLabels = ['A','S','D','F','G','H','J','K','L'];
const blackLabels = ['W','E','','T','Y','U','','O'];
let wi = 0, bi = 0;
for (let o = 0; o < 2; o++) {
whiteNotes.forEach((note, i) => {
const oct = this.octave + o;
const key = document.createElement('div');
key.className = 'key white-key';
key.dataset.note = note;
key.dataset.octave = oct;
key.innerHTML = `<span class="key-label">${whiteLabels[wi] || ''}</span>`;
piano.appendChild(key);
wi++;
if (blackNotes[i]) {
const bkey = document.createElement('div');
bkey.className = 'key black-key';
bkey.dataset.note = blackNotes[i];
bkey.dataset.octave = oct;
bkey.innerHTML = `<span class="key-label">${blackLabels[bi] || ''}</span>`;
piano.appendChild(bkey);
}
bi++;
});
}
this.positionBlackKeys();
}
positionBlackKeys() {
const piano = document.getElementById('piano');
const whites = piano.querySelectorAll('.white-key');
const blacks = piano.querySelectorAll('.black-key');
if (!whites.length) return;
const ww = whites[0].offsetWidth + 2;
const bw = blacks[0]?.offsetWidth || 22;
const pattern = [1,1,0,1,1,1,0];
let bi = 0;
for (let i = 0; i < whites.length && bi < blacks.length; i++) {
if (pattern[i % 7]) {
blacks[bi].style.left = `${(i + 1) * ww - bw / 2 + 11}px`;
bi++;
}
}
}
createVisualizer() {
const v = document.getElementById('visualizer');
v.innerHTML = '';
for (let i = 0; i < 50; i++) {
const bar = document.createElement('div');
bar.className = 'visualizer-bar';
bar.style.height = '4px';
v.appendChild(bar);
}
}
updateOctaveDisplay() {
document.getElementById('octaveDisplay').textContent = this.octave;
}
changeOctave(delta) {
const newOctave = this.octave + delta;
if (newOctave >= 2 && newOctave <= 6) {
this.octave = newOctave;
this.createPiano();
this.updateOctaveDisplay();
this.saveState();