zigbeat/shell.html at main · KMJ-007/zigbeat · GitHub

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<!doctype html>
<html lang="en-us">

<head>
	<meta charset="utf-8">
	<meta name="viewport"
		content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no" />
	<title>Zigbeat</title>
	<style>
		html,
		body {
			margin: 0;
			height: 100%;
			width: 100%;
			background-color: black;
			overflow: hidden;
		}

		canvas {
			position: fixed;
			inset: 0;
			border: 0;
			margin: 0;
			width: 100vw;
			height: 100vh;
			overflow: hidden;
			display: block;
			image-rendering: optimizeSpeed;
			image-rendering: -moz-crisp-edges;
			image-rendering: -o-crisp-edges;
			image-rendering: -webkit-optimize-contrast;
			image-rendering: optimize-contrast;
			image-rendering: crisp-edges;
			image-rendering: pixelated;
			-ms-interpolation-mode: nearest-neighbor;
		}

		#start-overlay {
			position: fixed;
			inset: 0;
			background: rgba(0, 0, 0, 0.95);
			display: flex;
			flex-direction: column;
			align-items: center;
			justify-content: center;
			color: #00ff00;
			font-family: monospace;
			font-size: 24px;
			cursor: pointer;
			z-index: 1000;
			transition: opacity 0.3s ease;
		}

		#start-overlay.hidden {
			opacity: 0;
			pointer-events: none;
		}

		#start-overlay p {
			margin: 10px 0;
			text-align: center;
		}

		#start-overlay .subtitle {
			font-size: 16px;
			color: #888;
		}
	</style>
</head>

<body>
	<div id="start-overlay">
		<p>Play</p>
	</div>
	<canvas  id="canvas" oncontextmenu="event.preventDefault()"></canvas>
	<script type='text/javascript'>
		var Module = {
			preRun: [],
			postRun: [],
			print: (function () {
				return function (text) {
					text = Array.prototype.slice.call(arguments).join(' ');
					console.log(text);
				};
			})(),
			printErr: function (text) {
				text = Array.prototype.slice.call(arguments).join(' ');
				console.error(text);
			},
			canvas: (function () {
				var canvas = document.getElementById('canvas');
				return canvas;
			})(),
			setStatus: function (text) { },
			monitorRunDependencies: function (left) { },
		};
		window.onerror = function () {
			console.log("onerror: " + event.message);
		};
	</script>
	<script>
		window.va = window.va || function () {(window.vaq = window.vaq || []).push(arguments);};
	</script>
	<script>
		// ============= URL State Management =============

		// Parse URL hash parameters (e.g., #bb=...)
		function getUrlParams() {
			var params = {};
			var hash = window.location.hash.substring(1); // Remove '#'

			if (hash) {
				var pairs = hash.split('&');
				for (var i = 0; i < pairs.length; i++) {
					var pair = pairs[i].split('=');
					if (pair.length === 2) {
						params[decodeURIComponent(pair[0])] = pair[1];
					}
				}
			}

			return params;
		}

		// Get bb parameter from URL
		function getBbFromUrl() {
			try {
				var params = getUrlParams();
				var bb = params.bb || null;
				if (bb) {
					console.log('getBbFromUrl: Found bb parameter:', bb);
					// Validate it's a valid hex string (only 0-9, a-f, A-F)
					if (!/^[0-9a-fA-F]*$/.test(bb)) {
						console.warn('getBbFromUrl: Invalid hex string, ignoring');
						return null;
					}
				}
				return bb;
			} catch (e) {
				console.error('getBbFromUrl: Error parsing URL:', e);
				return null;
			}
		}

		// Update URL hash with bb parameter (without page reload)
		function updateUrlWithBb(hexString) {
			try {
				if (!hexString) {
					// Clear bb parameter if empty
					window.history.replaceState(null, '', window.location.pathname);
				} else {
					// Don't encode hex string - it's already safe for URLs
					window.history.replaceState(null, '', '#bb=' + hexString);
				}
			} catch (e) {
				console.error('updateUrlWithBb: Error updating URL:', e);
			}
		}

		// Export functions for Zig to call
		window.zigbeat = window.zigbeat || {};
		window.zigbeat.getBbFromUrl = getBbFromUrl;
		window.zigbeat.updateUrlWithBb = updateUrlWithBb;

		// ============= Audio Management =============

		// Resume AudioContext on first user interaction
		var audioStarted = false;

		function resumeAudio() {
			if (audioStarted) return;
			audioStarted = true;

			console.log('User interaction detected, resuming audio...');

			// Hide overlay with fade effect
			var overlay = document.getElementById('start-overlay');
			overlay.classList.add('hidden');

			// Remove overlay from DOM after transition
			setTimeout(function() {
				if (overlay.parentNode) {
					overlay.parentNode.removeChild(overlay);
				}
			}, 300);

			// Resume any suspended AudioContexts (used by Emscripten/miniaudio)
			if (window.miniaudio && window.miniaudio.devices) {
				window.miniaudio.devices.forEach(function(device) {
					if (device.webaudio && device.webaudio.state === 'suspended') {
						device.webaudio.resume().then(function() {
							console.log('AudioContext resumed successfully');
						}).catch(function(err) {
							console.error('Failed to resume AudioContext:', err);
						});
					}
				});
			}
		}

		// Listen for any user interaction (once)
		document.addEventListener('click', resumeAudio, { once: true });
		document.addEventListener('keydown', resumeAudio, { once: true });
		document.addEventListener('touchstart', resumeAudio, { once: true });

		// Also add to Module.postRun to ensure it works after WASM loads
		Module.postRun.push(function() {
			console.log('Module loaded, waiting for user interaction to start audio');

			// Add audio debugging after a short delay to ensure miniaudio is initialized
			setTimeout(function() {
				if (window.miniaudio && window.miniaudio.devices && window.miniaudio.devices.length > 0) {
					var device = window.miniaudio.devices[0];
					if (device.scriptNode) {
						console.log('=== Audio Debug Info ===');
						console.log('Buffer size:', device.scriptNode.bufferSize);
						console.log('Sample rate:', device.webaudio.sampleRate);
						console.log('Channels:', device.scriptNode.channelCount);

						// Wrap the original onaudioprocess to log buffer data
						var originalCallback = device.scriptNode.onaudioprocess;
						var callCount = 0;

						device.scriptNode.onaudioprocess = function(e) {
							// Measure callback performance
							var startTime = performance.now();

							// Call original callback first
							originalCallback.call(this, e);

							var endTime = performance.now();
							var callbackDuration = endTime - startTime;

							// Log first few callbacks for debugging
							if (callCount < 5) {
								console.log('Callback took:', callbackDuration.toFixed(3), 'ms');
								callCount++;
								console.log('=== Audio Callback #' + callCount + ' ===');

								// Check output buffer
								var leftChannel = e.outputBuffer.getChannelData(0);
								var rightChannel = e.outputBuffer.getChannelData(1);

								// Log first 10 samples
								console.log('First 10 LEFT samples:', Array.from(leftChannel.slice(0, 10)));
								console.log('First 10 RIGHT samples:', Array.from(rightChannel.slice(0, 10)));

								// Check for NaN or Infinity
								var hasNaN = false;
								var hasInf = false;
								for (var i = 0; i < leftChannel.length; i++) {
									if (isNaN(leftChannel[i]) || isNaN(rightChannel[i])) hasNaN = true;
									if (!isFinite(leftChannel[i]) || !isFinite(rightChannel[i])) hasInf = true;
								}

								if (hasNaN) console.error('WARNING: Buffer contains NaN values!');
								if (hasInf) console.error('WARNING: Buffer contains Infinity values!');

								// Calculate min/max/avg
								var min = Math.min(...leftChannel);
								var max = Math.max(...leftChannel);
								var sum = leftChannel.reduce((a, b) => a + b, 0);
								var avg = sum / leftChannel.length;

								console.log('Buffer stats - Min:', min, 'Max:', max, 'Avg:', avg);
							}
						};

						console.log('Audio debugging enabled - check console during playback');
					}
				}
			}, 1000);
		});
	</script>
	{{{ SCRIPT }}}
</body>

</html>