/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var facekit = LK.import("@upit/facekit.v1");

/**** 
* Classes
****/ 
var ExpressionDetector = Container.expand(function () {
	var self = Container.call(this);
	// Expression state tracking
	self.lastSmiling = false;
	self.lastEyebrowsFrowning = false;
	self.lastBlinking = false;
	self.blinkCounter = 0;
	self.lastBlinkTime = 0;
	// Expression thresholds
	self.smileThreshold = 0.3;
	self.frownThreshold = 0.2;
	self.blinkThreshold = 50; // milliseconds
	self.detectSmile = function () {
		if (!facekit.upperLip || !facekit.lowerLip) return false;
		// Simple smile detection based on mouth corner positions
		var mouthCurve = (facekit.upperLip.y - facekit.lowerLip.y) / 20;
		return mouthCurve > self.smileThreshold;
	};
	self.detectFrown = function () {
		if (!facekit.leftEye || !facekit.rightEye) return false;
		// Detect frown based on eyebrow position relative to eyes
		var eyebrowPosition = (facekit.leftEye.y + facekit.rightEye.y) / 2 - 30;
		return eyebrowPosition < self.frownThreshold;
	};
	self.detectBlink = function () {
		// Simplified blink detection (in real implementation would track eye closure)
		var currentTime = Date.now();
		if (currentTime - self.lastBlinkTime > 2000) {
			// Auto-trigger every 2 seconds for demo
			self.lastBlinkTime = currentTime;
			return true;
		}
		return false;
	};
	self.onSmile = function (sequencer) {
		// Add new melody notes when smiling
		var newMelodyNote = melodyNotes[Math.floor(Math.random() * melodyNotes.length)];
		LK.getSound(newMelodyNote).play();
		LK.getSound('smile-trigger').play();
		// Visual feedback
		LK.effects.flashScreen(0x00ff88, 300);
		// Add to score
		LK.setScore(LK.getScore() + 25);
	};
	self.onFrown = function (sequencer) {
		// Increase BPM when frowning
		sequencer.bpm = Math.min(180, sequencer.bpm + 5);
		sequencer.beatInterval = 60000 / sequencer.bpm;
		LK.getSound('frown-trigger').play();
		// Visual feedback - red flash
		LK.effects.flashScreen(0xff4444, 200);
	};
	self.onBlink = function (sequencer) {
		// Trigger random effects on blink
		var randomEffect = effectSounds[Math.floor(Math.random() * effectSounds.length)];
		LK.getSound(randomEffect).play();
		LK.getSound('blink-effect').play();
		// Create sparkle effect
		for (var i = 0; i < 5; i++) {
			var sparkle = game.addChild(LK.getAsset('effectDot', {
				anchorX: 0.5,
				anchorY: 0.5,
				alpha: 1.0,
				tint: Math.random() * 0xffffff
			}));
			sparkle.x = facekit.mouthCenter.x + (Math.random() - 0.5) * 200;
			sparkle.y = facekit.mouthCenter.y + (Math.random() - 0.5) * 200;
			tween(sparkle, {
				scaleX: 2,
				scaleY: 2,
				alpha: 0
			}, {
				duration: 800,
				onFinish: function onFinish() {
					sparkle.destroy();
				}
			});
		}
	};
	self.update = function (sequencer) {
		// Check for expression changes
		var currentSmiling = self.detectSmile();
		var currentFrowning = self.detectFrown();
		var currentBlinking = self.detectBlink();
		// Trigger events on state transitions
		if (!self.lastSmiling && currentSmiling) {
			self.onSmile(sequencer);
		}
		if (!self.lastEyebrowsFrowning && currentFrowning) {
			self.onFrown(sequencer);
		}
		if (currentBlinking) {
			self.onBlink(sequencer);
		}
		// Update last states
		self.lastSmiling = currentSmiling;
		self.lastEyebrowsFrowning = currentFrowning;
	};
	return self;
});
var FaceShape = Container.expand(function () {
	var self = Container.call(this);
	self.faceOutline = self.attachAsset('faceOutline', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.leftEye = self.attachAsset('leftEye', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.rightEye = self.attachAsset('rightEye', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.nose = self.attachAsset('nose', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.mouth = self.attachAsset('mouth', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.currentColorIndex = 0;
	self.colorPalettes = [[0x3498db, 0xe74c3c, 0xf39c12, 0x9b59b6], [0x2ecc71, 0xe67e22, 0x34495e, 0x1abc9c], [0xf1c40f, 0x8e44ad, 0x16a085, 0xc0392b], [0x95a5a6, 0x2980b9, 0x27ae60, 0xd35400]];
	self.lastMouthOpen = false;
	self.updateFacePosition = function (faceX, faceY, faceWidth, faceHeight) {
		self.x = faceX;
		self.y = faceY;
		// Scale based on face size
		var scale = Math.max(faceWidth / 300, faceHeight / 400) * 0.8;
		self.faceOutline.scaleX = scale;
		self.faceOutline.scaleY = scale;
		// Position facial features relative to face center
		self.leftEye.x = -faceWidth * 0.15;
		self.leftEye.y = -faceHeight * 0.1;
		self.rightEye.x = faceWidth * 0.15;
		self.rightEye.y = -faceHeight * 0.1;
		self.nose.x = 0;
		self.nose.y = 0;
		self.mouth.x = 0;
		self.mouth.y = faceHeight * 0.15;
	};
	self.changeColors = function () {
		self.currentColorIndex = (self.currentColorIndex + 1) % self.colorPalettes.length;
		var palette = self.colorPalettes[self.currentColorIndex];
		tween(self.faceOutline, {
			tint: palette[0]
		}, {
			duration: 500
		});
		tween(self.leftEye, {
			tint: palette[1]
		}, {
			duration: 500
		});
		tween(self.rightEye, {
			tint: palette[1]
		}, {
			duration: 500
		});
		tween(self.nose, {
			tint: palette[2]
		}, {
			duration: 500
		});
		tween(self.mouth, {
			tint: palette[3]
		}, {
			duration: 500
		});
		LK.getSound('shapeChange').play();
	};
	self.update = function () {
		// Check for mouth open expression change
		var currentMouthOpen = facekit.mouthOpen;
		if (!self.lastMouthOpen && currentMouthOpen) {
			// Mouth just opened
			self.triggerExpression();
		}
		self.lastMouthOpen = currentMouthOpen;
		// Update mouth shape based on expression
		if (currentMouthOpen) {
			self.mouth.scaleY = 1.5;
		} else {
			self.mouth.scaleY = 1.0;
		}
	};
	self.triggerExpression = function () {
		// Create particle effect
		createParticleEffect(self.x, self.y);
		// Pulse effect on face outline
		tween(self.faceOutline, {
			scaleX: self.faceOutline.scaleX * 1.2,
			scaleY: self.faceOutline.scaleY * 1.2
		}, {
			duration: 200,
			onFinish: function onFinish() {
				tween(self.faceOutline, {
					scaleX: self.faceOutline.scaleX / 1.2,
					scaleY: self.faceOutline.scaleY / 1.2
				}, {
					duration: 200
				});
			}
		});
		// Play random note based on current face position and expression
		var randomNoteIndex = Math.floor(Math.random() * noteIds.length);
		LK.getSound(noteIds[randomNoteIndex]).play();
		LK.getSound('expressionTrigger').play();
		LK.setScore(LK.getScore() + 10);
		scoreText.setText('Score: ' + LK.getScore());
	};
	return self;
});
var FacialAnalyzer = Container.expand(function () {
	var self = Container.call(this);
	// Musical shape arrays
	self.melodyArcs = [];
	self.bassEllipses = [];
	self.rhythmSquares = [];
	self.effectDots = [];
	self.scanLines = [];
	self.wireframes = [];
	// Face analysis data
	self.eyebrowAngle = 0;
	self.eyeDistance = 0;
	self.mouthWidth = 0;
	self.chinLength = 0;
	self.headTilt = 0;
	// Musical timing
	self.bpm = 120;
	self.beatCount = 0;
	self.lastBeatTime = 0;
	self.analyzeFace = function () {
		if (!facekit.leftEye || !facekit.rightEye || !facekit.mouthCenter) return;
		// Calculate facial measurements
		self.eyeDistance = Math.abs(facekit.rightEye.x - facekit.leftEye.x);
		self.mouthWidth = Math.abs(facekit.upperLip.x - facekit.lowerLip.x) || 50;
		self.chinLength = Math.abs(facekit.chin.y - facekit.mouthCenter.y);
		self.headTilt = (facekit.rightEye.y - facekit.leftEye.y) / self.eyeDistance;
		// Generate shapes based on facial features
		self.generateMelodyArcs();
		self.generateBassEllipses();
		self.generateRhythmSquares();
		self.generateEffectDots();
	};
	self.generateMelodyArcs = function () {
		// Clear existing arcs
		for (var i = 0; i < self.melodyArcs.length; i++) {
			self.melodyArcs[i].destroy();
		}
		self.melodyArcs = [];
		// Create arcs based on eyebrow angle and eye distance
		var arcCount = Math.floor(self.eyeDistance / 50) + 2;
		for (var i = 0; i < arcCount; i++) {
			var arc = self.addChild(LK.getAsset('melodyArc', {
				anchorX: 0.5,
				anchorY: 0.5,
				alpha: 0.7
			}));
			arc.x = facekit.leftEye.x + i * (self.eyeDistance / arcCount);
			arc.y = facekit.leftEye.y - 50;
			arc.rotation = self.headTilt * 0.5;
			arc.noteIndex = i % melodyNotes.length;
			self.melodyArcs.push(arc);
		}
	};
	self.generateBassEllipses = function () {
		// Clear existing ellipses
		for (var i = 0; i < self.bassEllipses.length; i++) {
			self.bassEllipses[i].destroy();
		}
		self.bassEllipses = [];
		// Create bass ellipses based on mouth width
		var ellipseCount = Math.floor(self.mouthWidth / 30) + 1;
		for (var i = 0; i < ellipseCount; i++) {
			var ellipse = self.addChild(LK.getAsset('bassEllipse', {
				anchorX: 0.5,
				anchorY: 0.5,
				alpha: 0.6
			}));
			ellipse.x = facekit.mouthCenter.x + (i - ellipseCount / 2) * 60;
			ellipse.y = facekit.mouthCenter.y + 80;
			ellipse.noteIndex = i % bassNotes.length;
			self.bassEllipses.push(ellipse);
		}
	};
	self.generateRhythmSquares = function () {
		// Clear existing squares
		for (var i = 0; i < self.rhythmSquares.length; i++) {
			self.rhythmSquares[i].destroy();
		}
		self.rhythmSquares = [];
		// Create rhythm squares based on chin length
		var squareCount = Math.floor(self.chinLength / 40) + 2;
		for (var i = 0; i < squareCount; i++) {
			var square = self.addChild(LK.getAsset('rhythmSquare', {
				anchorX: 0.5,
				anchorY: 0.5,
				alpha: 0.8
			}));
			square.x = facekit.chin.x + (i - squareCount / 2) * 70;
			square.y = facekit.chin.y + 50;
			square.rhythmIndex = i % rhythmSounds.length;
			self.rhythmSquares.push(square);
		}
	};
	self.generateEffectDots = function () {
		// Clear existing dots
		for (var i = 0; i < self.effectDots.length; i++) {
			self.effectDots[i].destroy();
		}
		self.effectDots = [];
		// Create effect dots around nose area
		var dotCount = 4;
		for (var i = 0; i < dotCount; i++) {
			var dot = self.addChild(LK.getAsset('effectDot', {
				anchorX: 0.5,
				anchorY: 0.5,
				alpha: 0.5
			}));
			var angle = i / dotCount * Math.PI * 2;
			dot.x = facekit.noseTip.x + Math.cos(angle) * 60;
			dot.y = facekit.noseTip.y + Math.sin(angle) * 40;
			dot.effectIndex = i % effectSounds.length;
			self.effectDots.push(dot);
		}
	};
	self.createScanEffect = function () {
		// Create scanning wireframe effect
		var wireframe = self.addChild(LK.getAsset('faceWireframe', {
			anchorX: 0.5,
			anchorY: 0.5,
			alpha: 0.3
		}));
		wireframe.x = facekit.mouthCenter.x;
		wireframe.y = facekit.mouthCenter.y;
		// Animate scanning effect
		tween(wireframe, {
			alpha: 0.8,
			scaleX: 1.2,
			scaleY: 1.2
		}, {
			duration: 500,
			onFinish: function onFinish() {
				tween(wireframe, {
					alpha: 0,
					scaleX: 1.5,
					scaleY: 1.5
				}, {
					duration: 500,
					onFinish: function onFinish() {
						wireframe.destroy();
					}
				});
			}
		});
	};
	return self;
});
var MusicSequencer = Container.expand(function () {
	var self = Container.call(this);
	self.bpm = 120;
	self.beatInterval = 60000 / self.bpm; // milliseconds per beat
	self.lastBeatTime = 0;
	self.currentBeat = 0;
	self.isPlaying = false;
	// Musical sequences based on face analysis
	self.melodySequence = [];
	self.bassSequence = [];
	self.rhythmSequence = [];
	self.effectSequence = [];
	// Stereo panning based on head tilt
	self.panValue = 0;
	self.generateSequence = function (analyzer) {
		// Generate melody sequence from arcs
		self.melodySequence = [];
		for (var i = 0; i < analyzer.melodyArcs.length; i++) {
			var arc = analyzer.melodyArcs[i];
			self.melodySequence.push({
				note: melodyNotes[arc.noteIndex],
				beat: i % 4,
				volume: 0.6 + arc.alpha * 0.4
			});
		}
		// Generate bass sequence from ellipses
		self.bassSequence = [];
		for (var i = 0; i < analyzer.bassEllipses.length; i++) {
			var ellipse = analyzer.bassEllipses[i];
			self.bassSequence.push({
				note: bassNotes[ellipse.noteIndex],
				beat: i % 2,
				volume: 0.8
			});
		}
		// Generate rhythm sequence from squares
		self.rhythmSequence = [];
		for (var i = 0; i < analyzer.rhythmSquares.length; i++) {
			var square = analyzer.rhythmSquares[i];
			self.rhythmSequence.push({
				sound: rhythmSounds[square.rhythmIndex],
				beat: i % 4,
				volume: 0.7
			});
		}
		// Set up effect triggers from dots
		self.effectSequence = [];
		for (var i = 0; i < analyzer.effectDots.length; i++) {
			var dot = analyzer.effectDots[i];
			self.effectSequence.push({
				effect: effectSounds[dot.effectIndex],
				trigger: Math.random() < 0.3
			});
		}
		self.isPlaying = true;
	};
	self.updatePanning = function (headTilt) {
		self.panValue = Math.max(-1, Math.min(1, headTilt * 2));
		// Apply panning to current sounds (simplified representation)
	};
	self.playBeat = function () {
		if (!self.isPlaying) return;
		var beatInSequence = self.currentBeat % 4;
		// Play melody
		for (var i = 0; i < self.melodySequence.length; i++) {
			var melodyNote = self.melodySequence[i];
			if (melodyNote.beat === beatInSequence) {
				LK.getSound(melodyNote.note).play();
			}
		}
		// Play bass
		for (var i = 0; i < self.bassSequence.length; i++) {
			var bassNote = self.bassSequence[i];
			if (bassNote.beat === beatInSequence) {
				LK.getSound(bassNote.note).play();
			}
		}
		// Play rhythm
		for (var i = 0; i < self.rhythmSequence.length; i++) {
			var rhythmHit = self.rhythmSequence[i];
			if (rhythmHit.beat === beatInSequence) {
				LK.getSound(rhythmHit.sound).play();
			}
		}
		// Random effect triggers
		if (Math.random() < 0.1) {
			var randomEffect = self.effectSequence[Math.floor(Math.random() * self.effectSequence.length)];
			if (randomEffect && randomEffect.effect) {
				LK.getSound(randomEffect.effect).play();
			}
		}
		self.currentBeat++;
	};
	self.update = function () {
		var currentTime = Date.now();
		if (currentTime - self.lastBeatTime >= self.beatInterval) {
			self.playBeat();
			self.lastBeatTime = currentTime;
			// Create beat visualization
			var beatPulse = game.addChild(LK.getAsset('beatPulse', {
				anchorX: 0.5,
				anchorY: 0.5,
				alpha: 0.8
			}));
			beatPulse.x = 1024;
			beatPulse.y = 1366;
			tween(beatPulse, {
				scaleX: 3,
				scaleY: 3,
				alpha: 0
			}, {
				duration: 300,
				onFinish: function onFinish() {
					beatPulse.destroy();
				}
			});
		}
	};
	return self;
});
var Particle = Container.expand(function () {
	var self = Container.call(this);
	self.graphic = self.attachAsset('particle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityX = (Math.random() - 0.5) * 10;
	self.velocityY = (Math.random() - 0.5) * 10;
	self.life = 60; // 1 second at 60fps
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
		self.life--;
		// Fade out over time
		self.graphic.alpha = self.life / 60;
		if (self.life <= 0) {
			self.destroy();
			// Remove from particles array
			for (var i = particles.length - 1; i >= 0; i--) {
				if (particles[i] === self) {
					particles.splice(i, 1);
					break;
				}
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// Face-to-Music System Variables
// Face analysis shapes mapped to musical roles
// Arcs for melody
// Ellipses for bass
// Squares for rhythm
// Dots for effects
// Scanning wireframe
// Face wireframe
// Beat visualization
// Melody notes (piano) - mapped to arcs
// Bass notes (synth bass) - mapped to ellipses
// Rhythm sounds - mapped to squares
// Sound effects - mapped to dots/lines
// Expression triggers
var facialAnalyzer;
var musicSequencer;
var expressionDetector;
var scanEffectTimer = 0;
var gameInitialized = false;
// Musical arrays mapped to shape types
var melodyNotes = ['melody-g3', 'melody-b3', 'melody-c4', 'melody-d4', 'melody-e4', 'melody-f4', 'melody-a4'];
var bassNotes = ['bass-e2', 'bass-a2', 'bass-d2'];
var rhythmSounds = ['kick', 'snare', 'hihat'];
var effectSounds = ['filter-sweep', 'delay-effect', 'reverb-wash'];
// UI Elements
var scoreText;
var instructionText;
var bpmText;
var statusText;
var gameTime = 0;
// Create score display
scoreText = new Text2('Score: 0', {
	size: 60,
	fill: 0x00ff88
});
scoreText.anchor.set(0.5, 0);
scoreText.y = 50;
LK.gui.top.addChild(scoreText);
// Create BPM display
bpmText = new Text2('BPM: 120', {
	size: 40,
	fill: 0x88aaff
});
bpmText.anchor.set(0, 0);
bpmText.x = 50;
bpmText.y = 120;
LK.gui.top.addChild(bpmText);
// Create status text
statusText = new Text2('Scanning face...', {
	size: 50,
	fill: 0xffaa44
});
statusText.anchor.set(0.5, 0.5);
LK.gui.center.addChild(statusText);
// Create instruction text
instructionText = new Text2('Express yourself to create music!', {
	size: 35,
	fill: 0xffffff
});
instructionText.anchor.set(0.5, 1);
instructionText.y = -50;
LK.gui.bottom.addChild(instructionText);
// Initialize face-to-music system components
facialAnalyzer = game.addChild(new FacialAnalyzer());
musicSequencer = new MusicSequencer();
expressionDetector = new ExpressionDetector();
function createScanningEffect() {
	// Create multiple scanning lines
	for (var i = 0; i < 3; i++) {
		var scanLine = game.addChild(LK.getAsset('scanLine', {
			anchorX: 0.5,
			anchorY: 0.5,
			alpha: 0.6
		}));
		scanLine.x = 1024;
		scanLine.y = 200 + i * 150;
		scanLine.scaleX = 0;
		tween(scanLine, {
			scaleX: 1.5,
			alpha: 0
		}, {
			duration: 1000 + i * 200,
			onFinish: function onFinish() {
				scanLine.destroy();
			}
		});
	}
}
function createBeatVisualization(x, y, intensity) {
	var beatPulse = game.addChild(LK.getAsset('beatPulse', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: intensity,
		tint: 0x00ff88
	}));
	beatPulse.x = x;
	beatPulse.y = y;
	tween(beatPulse, {
		scaleX: 2 + intensity,
		scaleY: 2 + intensity,
		alpha: 0
	}, {
		duration: 400,
		onFinish: function onFinish() {
			beatPulse.destroy();
		}
	});
}
function updateMusicVisualization() {
	// Create visual pulses synced to music
	if (musicSequencer.isPlaying && gameTime % 15 === 0) {
		var centerX = 1024;
		var centerY = 1366;
		createBeatVisualization(centerX, centerY, 0.8);
		// Create smaller pulses around face shapes
		if (facialAnalyzer.melodyArcs.length > 0) {
			for (var i = 0; i < facialAnalyzer.melodyArcs.length; i++) {
				var arc = facialAnalyzer.melodyArcs[i];
				if (Math.random() < 0.3) {
					createBeatVisualization(arc.x, arc.y, 0.4);
				}
			}
		}
	}
}
// Handle tap to regenerate music composition
game.down = function (x, y, obj) {
	if (gameInitialized && facialAnalyzer) {
		// Regenerate the musical composition
		facialAnalyzer.analyzeFace();
		musicSequencer.generateSequence(facialAnalyzer);
		// Visual feedback
		facialAnalyzer.createScanEffect();
		// Audio feedback
		LK.getSound('smile-trigger').play();
		// Add score bonus
		LK.setScore(LK.getScore() + 15);
		scoreText.setText('Score: ' + LK.getScore());
		// Temporary instruction
		var originalText = instructionText.text;
		instructionText.setText('Music composition refreshed!');
		LK.setTimeout(function () {
			instructionText.setText(originalText);
		}, 2000);
	}
};
// Main face-to-music game loop
game.update = function () {
	gameTime++;
	// Check if face is detected and initialize system
	if (facekit.mouthCenter && facekit.leftEye && facekit.rightEye && !gameInitialized) {
		// Face detected - initialize the music system
		statusText.setText('Face detected! Analyzing...');
		createScanningEffect();
		// Allow some time for scanning effect
		if (scanEffectTimer++ > 120) {
			// 2 seconds at 60fps
			facialAnalyzer.analyzeFace();
			musicSequencer.generateSequence(facialAnalyzer);
			gameInitialized = true;
			statusText.setText('Music composition created!');
			// Fade out status text
			tween(statusText, {
				alpha: 0
			}, {
				duration: 2000,
				onFinish: function onFinish() {
					statusText.setText('');
					statusText.alpha = 1;
				}
			});
		}
	}
	// Main music and visual system updates
	if (gameInitialized && facekit.mouthCenter) {
		// Update facial analysis continuously
		facialAnalyzer.analyzeFace();
		// Update music sequencer with head tilt for panning
		if (facekit.leftEye && facekit.rightEye) {
			var headTilt = (facekit.rightEye.y - facekit.leftEye.y) / Math.abs(facekit.rightEye.x - facekit.leftEye.x);
			musicSequencer.updatePanning(headTilt);
		}
		// Update music sequencer
		musicSequencer.update();
		// Update expression detection
		expressionDetector.update(musicSequencer);
		// Update music visualization
		updateMusicVisualization();
		// Update UI
		bpmText.setText('BPM: ' + musicSequencer.bpm);
		// Re-analyze face every 5 seconds to keep music fresh
		if (gameTime % 300 === 0) {
			facialAnalyzer.analyzeFace();
			musicSequencer.generateSequence(facialAnalyzer);
		}
	}
	// Update score based on active music creation
	if (gameInitialized && musicSequencer.isPlaying) {
		if (gameTime % 60 === 0) {
			LK.setScore(LK.getScore() + 2);
			scoreText.setText('Score: ' + LK.getScore());
		}
	}
	// Update instruction text based on game state and score
	if (!gameInitialized) {
		if (facekit.mouthCenter) {
			instructionText.setText('Analyzing your face...');
		} else {
			instructionText.setText('Position your face in view of camera');
		}
	} else {
		if (LK.getScore() > 150) {
			instructionText.setText('Musical master! Your face creates beautiful compositions!');
		} else if (LK.getScore() > 75) {
			instructionText.setText('Excellent! Try different expressions for variety!');
		} else {
			instructionText.setText('Smile, frown, blink - each expression adds to your music!');
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -453,9 +453,9 @@
 		}
 		// Random effect triggers
 		if (Math.random() < 0.1) {
 			var randomEffect = self.effectSequence[Math.floor(Math.random() * self.effectSequence.length)];
-			if (randomEffect) {
+			if (randomEffect && randomEffect.effect) {
 				LK.getSound(randomEffect.effect).play();
 			}
 		}
 		self.currentBeat++;
@@ -525,22 +525,22 @@
 
 /**** 
 * Game Code
 ****/ 
-// Expression triggers
-// Sound effects - mapped to dots/lines
-// Rhythm sounds - mapped to squares
-// Bass notes (synth bass) - mapped to ellipses
-// Melody notes (piano) - mapped to arcs
-// Beat visualization
-// Face wireframe
-// Scanning wireframe
-// Dots for effects
-// Squares for rhythm
-// Ellipses for bass
-// Arcs for melody
-// Face analysis shapes mapped to musical roles
 // Face-to-Music System Variables
+// Face analysis shapes mapped to musical roles
+// Arcs for melody
+// Ellipses for bass
+// Squares for rhythm
+// Dots for effects
+// Scanning wireframe
+// Face wireframe
+// Beat visualization
+// Melody notes (piano) - mapped to arcs
+// Bass notes (synth bass) - mapped to ellipses
+// Rhythm sounds - mapped to squares
+// Sound effects - mapped to dots/lines
+// Expression triggers
 var facialAnalyzer;
 var musicSequencer;
 var expressionDetector;
 var scanEffectTimer = 0;