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

/**** 
* Classes
****/ 
// Crossfader: Controls mix between decks
var Crossfader = Container.expand(function () {
	var self = Container.call(this);
	// State
	self.value = 0.5; // 0 = left, 1 = right
	self.dragging = false;
	// Visuals
	var track = self.attachAsset('crossfaderTrack', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var knob = self.attachAsset('crossfaderKnob', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	knob.y = 0;
	// Methods
	self.setValue = function (val) {
		self.value = Math.max(0, Math.min(1, val));
		knob.x = (self.value - 0.5) * (track.width - knob.width);
	};
	// Touch events
	self.down = function (x, y, obj) {
		self.dragging = true;
		self.setValue(x / track.width);
	};
	self.up = function (x, y, obj) {
		self.dragging = false;
	};
	self.move = function (x, y, obj) {
		if (self.dragging) {
			self.setValue(x / track.width);
		}
	};
	return self;
});
// DeckPlatter: Represents a turntable platter
var DeckPlatter = Container.expand(function () {
	var self = Container.call(this);
	// State
	self.isActive = false;
	self.isScratching = false;
	self.lastAngle = 0;
	self.rotationOffset = 0;
	self.currentRotation = 0;
	self.track = 'A'; // 'A' or 'B'
	self.playing = true;
	self.scratchSpeed = 0;
	self.lastTouchAngle = null;
	// Visuals
	var platter = self.attachAsset('deckPlatter', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var highlight = self.attachAsset('deckPlatterHighlight', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	highlight.alpha = 0;
	var label = self.attachAsset('deckLabel', {
		anchorX: 0.5,
		anchorY: 0.5,
		y: 140
	});
	// Label text
	var labelTxt = new Text2(self.track, {
		size: 40,
		fill: "#222"
	});
	labelTxt.anchor.set(0.5, 0.5);
	label.addChild(labelTxt);
	// Beat light
	var beatLight = self.attachAsset('beatLight', {
		anchorX: 0.5,
		anchorY: 0.5,
		y: -140
	});
	beatLight.alpha = 0.2;
	// Methods
	self.setActive = function (active) {
		self.isActive = active;
		highlight.alpha = active ? 0.4 : 0;
	};
	self.setTrack = function (track) {
		self.track = track;
		labelTxt.setText(track);
	};
	self.flashBeat = function () {
		beatLight.alpha = 1;
		tween(beatLight, {
			alpha: 0.2
		}, {
			duration: 200,
			easing: tween.easeOut
		});
	};
	// Touch events
	self.down = function (x, y, obj) {
		self.isScratching = true;
		self.setActive(true);
		// Calculate angle from center
		var dx = x - self.width / 2;
		var dy = y - self.height / 2;
		self.lastTouchAngle = Math.atan2(dy, dx);
		self.scratchSpeed = 0;
		LK.getSound('scratch').play();
	};
	self.up = function (x, y, obj) {
		self.isScratching = false;
		self.setActive(false);
		self.scratchSpeed = 0;
		self.lastTouchAngle = null;
	};
	self.move = function (x, y, obj) {
		if (!self.isScratching) return;
		// Calculate angle from center
		var dx = x - self.width / 2;
		var dy = y - self.height / 2;
		var angle = Math.atan2(dy, dx);
		if (self.lastTouchAngle !== null) {
			var delta = angle - self.lastTouchAngle;
			// Normalize delta
			if (delta > Math.PI) delta -= 2 * Math.PI;
			if (delta < -Math.PI) delta += 2 * Math.PI;
			self.rotationOffset += delta;
			self.scratchSpeed = delta;
		}
		self.lastTouchAngle = angle;
	};
	// Called every tick
	self.update = function () {
		// If not scratching, platter rotates at normal speed
		if (!self.isScratching && self.playing) {
			self.rotationOffset += 0.02; // Normal play speed
			self.scratchSpeed = 0.02;
		}
		// Apply rotation
		self.currentRotation = self.rotationOffset;
		self.rotation = self.currentRotation;
	};
	return self;
});
// Discoball: True 3D disco ball illusion with spinning mirrored tiles and shining white light particles
var Discoball = Container.expand(function () {
	var self = Container.call(this);
	// Config
	var ballRadius = 150;
	var ballDiameter = ballRadius * 2;
	var numLat = 13; // latitude tiles (vertical)
	var numLon = 24; // longitude tiles (horizontal)
	var tileSize = ballDiameter / numLat * 0.95;
	var tileGap = tileSize * 0.12;
	var tiles = [];
	var shineParticles = [];
	var numShine = 18;
	var shineRadius = ballRadius * 1.08;
	var shineMinAlpha = 0.18;
	var shineMaxAlpha = 0.85;
	var shineMinSize = tileSize * 0.7;
	var shineMaxSize = tileSize * 1.7;
	var spinY = 0; // radians, for y-axis rotation
	var spinSpeed = 0.012;
	var spinDir = 1;
	// --- Mirrored Tiles Grid ---
	for (var lat = 0; lat < numLat; lat++) {
		var theta = Math.PI * (lat + 0.5) / numLat; // 0 (top) to PI (bottom)
		var y = Math.cos(theta) * ballRadius;
		var r = Math.sin(theta) * ballRadius;
		for (var lon = 0; lon < numLon; lon++) {
			var phi = 2 * Math.PI * lon / numLon;
			// 3D to 2D projection with y-axis spin
			var x3d = Math.cos(phi) * r;
			var z3d = Math.sin(phi) * r;
			// Y-axis spin
			var x2d = x3d * Math.cos(spinY) - z3d * Math.sin(spinY);
			var z2d = x3d * Math.sin(spinY) + z3d * Math.cos(spinY);
			// Only draw front-facing tiles (z2d > 0)
			if (z2d > 0) {
				var tile = LK.getAsset('centerCircle', {
					anchorX: 0.5,
					anchorY: 0.5,
					width: tileSize,
					height: tileSize
				});
				// Mirror color: light gray, with some random sparkle
				var base = 0xbb + Math.floor(Math.random() * 0x22);
				var color = base << 16 | base << 8 | base;
				tile.tint = color;
				tile.alpha = 0.92 - 0.18 * (lat / numLat) + Math.random() * 0.08;
				// Position
				tile.x = x2d;
				tile.y = y;
				// Simulate 3D: scaleX based on z2d
				tile.scaleX = 1 + 0.18 * (z2d / ballRadius);
				tile.scaleY = 1;
				self.addChild(tile);
				tiles.push({
					tile: tile,
					lat: lat,
					lon: lon,
					theta: theta,
					phi: phi
				});
			}
		}
	}
	// --- Specular highlight (white spot) ---
	var highlight = LK.getAsset('centerCircle', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: ballRadius * 0.7,
		height: ballRadius * 0.36
	});
	highlight.tint = 0xffffff;
	highlight.alpha = 0.7;
	highlight.x = -ballRadius * 0.32;
	highlight.y = -ballRadius * 0.38;
	self.addChild(highlight);
	// --- Shining white light particles ---
	for (var i = 0; i < numShine; i++) {
		var angle = 2 * Math.PI * i / numShine + Math.random() * 0.2;
		var dist = shineRadius * (0.92 + Math.random() * 0.12);
		var particle = LK.getAsset('centerCircle', {
			anchorX: 0.5,
			anchorY: 0.5,
			width: shineMinSize + Math.random() * (shineMaxSize - shineMinSize),
			height: shineMinSize + Math.random() * (shineMaxSize - shineMinSize)
		});
		particle.tint = 0xffffff;
		particle.alpha = shineMinAlpha + Math.random() * (shineMaxAlpha - shineMinAlpha);
		particle.x = Math.cos(angle) * dist;
		particle.y = Math.sin(angle) * dist;
		self.addChild(particle);
		shineParticles.push({
			particle: particle,
			baseAngle: angle,
			baseDist: dist,
			phase: Math.random() * Math.PI * 2
		});
	}
	// --- Light beams (background) ---
	var numBeams = 32;
	var beams = [];
	var lightBeamLength = 800;
	for (var i = 0; i < numBeams; i++) {
		var beam = LK.getAsset('crossfaderTrack', {
			anchorX: 0.5,
			anchorY: 0,
			width: 8,
			height: lightBeamLength
		});
		beam.tint = 0xffffff;
		beam.alpha = 0.08 + Math.random() * 0.13;
		beam.rotation = Math.PI * 2 / numBeams * i + Math.random() * 0.1;
		beams.push(beam);
		self.addChild(beam);
	}
	// --- Animation ---
	function animateSpinY() {
		// Animate spinY between -PI/2 and PI/2 for y-axis illusion
		var target = spinDir > 0 ? Math.PI / 2 : -Math.PI / 2;
		tween(self, {
			_spinY: target
		}, {
			duration: 1600,
			easing: tween.linear,
			onUpdate: function onUpdate() {
				// nothing, handled in update
			},
			onFinish: function onFinish() {
				spinDir *= -1;
				animateSpinY();
			}
		});
	}
	self._spinY = 0;
	animateSpinY();
	self.update = function () {
		// Animate y-axis spin
		spinY += spinSpeed * spinDir;
		if (spinY > Math.PI / 2) spinY = -Math.PI / 2;
		if (spinY < -Math.PI / 2) spinY = Math.PI / 2;
		self._spinY += (spinY - self._spinY) * 0.18; // smooth
		// Update mirrored tiles positions for y-axis spin
		for (var i = 0; i < tiles.length; i++) {
			var t = tiles[i];
			// 3D to 2D projection with y-axis spin
			var x3d = Math.cos(t.phi) * Math.sin(t.theta) * ballRadius;
			var y3d = Math.cos(t.theta) * ballRadius;
			var z3d = Math.sin(t.phi) * Math.sin(t.theta) * ballRadius;
			// Y-axis spin
			var x2d = x3d * Math.cos(self._spinY) - z3d * Math.sin(self._spinY);
			var z2d = x3d * Math.sin(self._spinY) + z3d * Math.cos(self._spinY);
			// Only show front-facing tiles
			if (z2d > 0) {
				t.tile.visible = true;
				t.tile.x = x2d;
				t.tile.y = y3d;
				t.tile.scaleX = 1 + 0.18 * (z2d / ballRadius);
				t.tile.scaleY = 1;
				// Flicker for disco effect
				t.tile.alpha = 0.88 - 0.18 * (t.lat / numLat) + Math.random() * 0.09;
			} else {
				t.tile.visible = false;
			}
		}
		// Animate highlight to move in a small circle for extra 3D effect
		var t = Date.now() * 0.001;
		highlight.x = -ballRadius * 0.32 + Math.cos(t * 1.2) * ballRadius * 0.13;
		highlight.y = -ballRadius * 0.38 + Math.sin(t * 1.2) * ballRadius * 0.09;
		// Animate shine particles
		for (var i = 0; i < shineParticles.length; i++) {
			var s = shineParticles[i];
			var phase = t * 1.2 + s.phase;
			var r = s.baseDist + Math.sin(phase) * 12;
			s.particle.x = Math.cos(s.baseAngle + Math.sin(phase) * 0.12) * r;
			s.particle.y = Math.sin(s.baseAngle + Math.cos(phase) * 0.12) * r;
			s.particle.alpha = shineMinAlpha + (shineMaxAlpha - shineMinAlpha) * (0.5 + 0.5 * Math.sin(phase * 2 + i));
			var size = shineMinSize + (shineMaxSize - shineMinSize) * (0.5 + 0.5 * Math.cos(phase * 1.5 + i));
			s.particle.width = size;
			s.particle.height = size;
		}
		// Animate beams (spin and flicker)
		for (var i = 0; i < beams.length; i++) {
			var beam = beams[i];
			beam.rotation += 0.015;
			beam.alpha = 0.08 + Math.random() * 0.13;
		}
	};
	return self;
});
// EqualizerWaves: Animated equalizer bars/waves for visual feedback
var EqualizerWaves = Container.expand(function () {
	var self = Container.call(this);
	// Config
	var numBars = 32;
	var barWidth = 40;
	var barSpacing = 16;
	var barMaxHeight = 220;
	var barMinHeight = 40;
	var bars = [];
	// Create bars
	for (var i = 0; i < numBars; i++) {
		var bar = LK.getAsset('crossfaderTrack', {
			anchorX: 0.5,
			anchorY: 1.0,
			width: barWidth,
			height: barMinHeight,
			x: i * (barWidth + barSpacing),
			y: 0
		});
		// Rainbow gradient: hue from 0 to 360 across bars
		var hue = Math.floor(i / numBars * 360);
		var rgb = hsvToRgb(hue / 360, 1, 1);
		bar.tint = rgb[0] << 16 | rgb[1] << 8 | rgb[2];
		// No dark overlay or background is added to the equalizer.
		self.addChild(bar);
		bars.push(bar);
	}
	// HSV to RGB helper
	function hsvToRgb(h, s, v) {
		var r, g, b;
		var i = Math.floor(h * 6);
		var f = h * 6 - i;
		var p = v * (1 - s);
		var q = v * (1 - f * s);
		var t = v * (1 - (1 - f) * s);
		switch (i % 6) {
			case 0:
				r = v, g = t, b = p;
				break;
			case 1:
				r = q, g = v, b = p;
				break;
			case 2:
				r = p, g = v, b = t;
				break;
			case 3:
				r = p, g = q, b = v;
				break;
			case 4:
				r = t, g = p, b = v;
				break;
			case 5:
				r = v, g = p, b = q;
				break;
		}
		return [Math.round(r * 255), Math.round(g * 255), Math.round(b * 255)];
	}
	// Center and scale down the whole equalizer to half size
	self.width = numBars * (barWidth + barSpacing) * 0.5;
	self.height = barMaxHeight * 0.5;
	self.scaleX = 0.5;
	self.scaleY = 0.5;
	self.x = 2048 / 2 - self.width / 2;
	self.y = 600; // Upper half of screen, below GUI
	// Animation state
	self.phase = [];
	for (var j = 0; j < numBars; j++) {
		self.phase[j] = Math.random() * Math.PI * 2;
	}
	// Animate bars
	self.update = function () {
		var t = Date.now() * 0.002;
		for (var i = 0; i < numBars; i++) {
			// Simulate music: combine sine waves and random
			var wave = Math.sin(t + self.phase[i]) * 0.5 + 0.5;
			var beatPulse = (Math.sin(t * 2 + i * 0.2) * 0.5 + 0.5) * 0.5;
			var randomPulse = Math.random() * 0.15;
			var h = barMinHeight + (barMaxHeight - barMinHeight) * (wave * 0.6 + beatPulse * 0.3 + randomPulse);
			bars[i].height = h;
		}
	};
	return self;
});
// FXButton: Triggers a sound effect
var FXButton = Container.expand(function () {
	var self = Container.call(this);
	// Visuals
	var btn = self.attachAsset('fxButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var txt = new Text2('FX', {
		size: 48,
		fill: "#fff"
	});
	txt.anchor.set(0.5, 0.5);
	btn.addChild(txt);
	// State
	self.cooldown = false;
	// Touch
	self.down = function (x, y, obj) {
		if (self.cooldown) return;
		self.cooldown = true;
		LK.getSound('fx').play();
		tween(btn, {
			scaleX: 1.2,
			scaleY: 1.2
		}, {
			duration: 80,
			onFinish: function onFinish() {
				tween(btn, {
					scaleX: 1,
					scaleY: 1
				}, {
					duration: 120
				});
			}
		});
		LK.setTimeout(function () {
			self.cooldown = false;
		}, 400);
	};
	return self;
});
// LaserShow: Realistic party laser show with moving heads and multi-color animated beams
var LaserShow = Container.expand(function () {
	var self = Container.call(this);
	// Config
	var numHeads = 6;
	var beamsPerHead = 3;
	var headRadius = 800;
	var centerX = 2048 / 2;
	var centerY = 400;
	var beamLength = 1200;
	var beamWidth = 18;
	var beamAlpha = 0.45;
	var headAlpha = 0.7;
	var heads = [];
	var beams = [];
	// Predefined rainbow colors for beams
	var beamColors = [0xff0000,
	// red
	0xff8000,
	// orange
	0xffff00,
	// yellow
	0x00ff00,
	// green
	0x00ffff,
	// cyan
	0x0000ff,
	// blue
	0x8000ff,
	// violet
	0xff00ff // magenta
	];
	// Create moving heads and beams
	for (var h = 0; h < numHeads; h++) {
		// Head position in a semi-circle
		var angle = Math.PI * (h + 1) / (numHeads + 1);
		var hx = centerX + Math.cos(angle) * headRadius;
		var hy = centerY + Math.sin(angle) * 200;
		// Head (visual: ellipse, colored)
		// Use rainbowEllipse for gradient rainbow look
		var head = LK.getAsset('rainbowEllipse', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: hx,
			y: hy,
			width: 20,
			height: 20
		});
		head.alpha = headAlpha;
		// Animate color: store initial hue offset for each head
		head._rainbowHueOffset = h * (360 / numHeads);
		self.addChild(head);
		heads.push(head);
		// Beams for this head
		for (var b = 0; b < beamsPerHead; b++) {
			var beam = LK.getAsset('crossfaderTrack', {
				anchorX: 0.5,
				anchorY: 0,
				x: hx,
				y: hy,
				width: beamWidth,
				height: beamLength
			});
			// Assign color in a rainbow pattern, offset by head and beam
			beam.tint = beamColors[(h * beamsPerHead + b) % beamColors.length];
			beam.alpha = beamAlpha;
			// Initial rotation
			beam.rotation = 0;
			self.addChild(beam);
			beams.push({
				obj: beam,
				headIdx: h,
				beamIdx: b,
				baseAngle: angle
			});
		}
	}
	// Animate heads and beams
	self.update = function () {
		var t = Date.now() * 0.001;
		// Animate heads in a subtle up/down and color pulse
		for (var h = 0; h < heads.length; h++) {
			var head = heads[h];
			// Sway up/down
			head.y = centerY + Math.sin(Math.PI * (h + 1) / (numHeads + 1)) * 200 + Math.sin(t * 1.2 + h) * 18;
			// Pulse alpha
			head.alpha = headAlpha + 0.15 * Math.sin(t * 2 + h);
			// Animate rainbow color: cycle hue every second
			// Full cycle every 1 second (t mod 1.0)
			var hue = (head._rainbowHueOffset + t * 360) % 360 / 360;
			// HSV to RGB conversion
			var i = Math.floor(hue * 6);
			var f = hue * 6 - i;
			var q = 1 - f;
			var tcol = 1 - (1 - f);
			var r, g, b;
			switch (i % 6) {
				case 0:
					r = 1, g = tcol, b = 0;
					break;
				case 1:
					r = q, g = 1, b = 0;
					break;
				case 2:
					r = 0, g = 1, b = tcol;
					break;
				case 3:
					r = 0, g = q, b = 1;
					break;
				case 4:
					r = tcol, g = 0, b = 1;
					break;
				case 5:
					r = 1, g = 0, b = q;
					break;
			}
			var tint = Math.round(r * 255) << 16 | Math.round(g * 255) << 8 | Math.round(b * 255);
			// Tween the head tint for smooth color change
			tween(head, {
				tint: tint
			}, {
				duration: 120,
				easing: tween.linear
			});
		}
		// Animate beams: sweep, flicker, and color pulse
		for (var i = 0; i < beams.length; i++) {
			var beamData = beams[i];
			var beam = beamData.obj;
			var h = beamData.headIdx;
			var b = beamData.beamIdx;
			var baseAngle = beamData.baseAngle;
			// Beam origin follows head
			var head = heads[h];
			beam.x = head.x;
			beam.y = head.y;
			// Animate beam angle: base + sweeping + per-beam offset
			var sweep = Math.sin(t * 1.1 + h + b * 0.7) * 0.25 + Math.sin(t * 0.7 + b) * 0.12;
			var beatPulse = Math.sin(t * 2.5 + h + b) * 0.08;
			beam.rotation = baseAngle - Math.PI / 2 + sweep + beatPulse;
			// Animate beam length for flicker
			var flicker = 1 + 0.12 * Math.sin(t * 3 + h * 2 + b * 1.5 + Math.sin(t * 1.5 + b));
			beam.height = beamLength * flicker;
			// Animate color pulse (simulate RGB laser color mixing)
			var colorIdx = (h * beamsPerHead + b + Math.floor(t * 2 + h + b)) % beamColors.length;
			beam.tint = beamColors[colorIdx];
			// Animate alpha for strobe effect
			beam.alpha = beamAlpha + 0.15 * Math.abs(Math.sin(t * 4 + h + b));
		}
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// --- Discoball (top of screen) ---
var discoball = new Discoball();
game.addChild(discoball);
discoball.x = 2048 / 2;
discoball.y = 200; // Position at the top of the screen
discoball.scaleX = 0.8;
discoball.scaleY = 0.8;
// --- Laser Show (upper half) ---
var laserShow = new LaserShow();
game.addChild(laserShow);
laserShow.y = -333; // Move laser effect up by 333 units
// --- DJ Deck Asset ---
var djDeck = LK.getAsset('djDeck', {
	anchorX: 0.5,
	anchorY: 0.5
});
game.addChild(djDeck);
djDeck.x = 2048 / 2;
djDeck.y = 2732 / 2 + 333; // Move the DJ deck down by 333 units
// No dark overlay is present, so nothing to remove.
// --- Decks --- 
// Sound effects (dummy, as actual music is handled by LK)
// Beat lights
// FX Button
// Crossfader
// Deck platters (turntables)
// --- Layout constants ---
var deckY = 1366; // Move decks to vertical center of 2732px screen
var deckSpacing = 1000;
var crossfaderY = 1800;
var fxButtonY = 2200;
// --- Equalizer Waves (upper half) ---
var equalizer = new EqualizerWaves();
game.addChild(equalizer);
// --- Decks ---
var leftDeck = new DeckPlatter();
leftDeck.setTrack('A');
game.addChild(leftDeck);
leftDeck.x = 2048 / 2 - deckSpacing / 2;
leftDeck.y = deckY;
var rightDeck = new DeckPlatter();
rightDeck.setTrack('B');
game.addChild(rightDeck);
rightDeck.x = 2048 / 2 + deckSpacing / 2;
rightDeck.y = deckY;
// --- Crossfader ---
var crossfader = new Crossfader();
game.addChild(crossfader);
crossfader.x = 2048 / 2;
crossfader.y = crossfaderY;
crossfader.setValue(0.5);
// --- FX Button ---
var fxButton = new FXButton();
game.addChild(fxButton);
fxButton.x = 2048 / 2;
fxButton.y = fxButtonY;
// --- Score / Combo / Energy ---
var energy = 50; // 0-100
var combo = 0;
var score = 0;
// Energy bar
var energyBarBg = LK.getAsset('crossfaderTrack', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 600,
	height: 40
});
energyBarBg.tint = 0x222222;
energyBarBg.y = 0;
var energyBar = LK.getAsset('crossfaderTrack', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 600,
	height: 40
});
energyBar.tint = 0x00ff00;
energyBar.y = 0;
var energyBarContainer = new Container();
energyBarContainer.addChild(energyBarBg);
energyBarContainer.addChild(energyBar);
energyBarContainer.x = 2048 / 2;
energyBarContainer.y = 200;
LK.gui.top.addChild(energyBarContainer);
// Score text
var scoreTxt = new Text2('Score: 0', {
	size: 80,
	fill: "#fff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
scoreTxt.x = 2048 / 2;
scoreTxt.y = 300;
// Combo text
var comboTxt = new Text2('', {
	size: 60,
	fill: "#ff0"
});
comboTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(comboTxt);
comboTxt.x = 2048 / 2;
comboTxt.y = 400;
// --- State ---
var dragging = null; // Which control is being dragged
var lastTouchObj = null;
// --- Beat simulation ---
var beatInterval = 600; // ms per beat
var beatTimer = 0;
var lastTickTime = Date.now();
// --- Music ---
LK.playMusic('trackA', {
	loop: true
});
LK.playMusic('trackB', {
	loop: true
});
var trackAVol = 1;
var trackBVol = 1;
// --- Touch handling ---
function getTouchedControl(x, y) {
	// Check decks
	var lx = leftDeck.toLocal(game.toGlobal({
		x: x,
		y: y
	})).x;
	var ly = leftDeck.toLocal(game.toGlobal({
		x: x,
		y: y
	})).y;
	if (Math.pow(lx - leftDeck.width / 2, 2) + Math.pow(ly - leftDeck.height / 2, 2) < 200 * 200) return leftDeck;
	var rx = rightDeck.toLocal(game.toGlobal({
		x: x,
		y: y
	})).x;
	var ry = rightDeck.toLocal(game.toGlobal({
		x: x,
		y: y
	})).y;
	if (Math.pow(rx - rightDeck.width / 2, 2) + Math.pow(ry - rightDeck.height / 2, 2) < 200 * 200) return rightDeck;
	// Crossfader
	var cf = crossfader.toLocal(game.toGlobal({
		x: x,
		y: y
	}));
	if (cf.x > 0 && cf.x < crossfader.width && cf.y > 0 && cf.y < crossfader.height) return crossfader;
	// FX Button
	var fx = fxButton.toLocal(game.toGlobal({
		x: x,
		y: y
	}));
	if (Math.pow(fx.x - fxButton.width / 2, 2) + Math.pow(fx.y - fxButton.height / 2, 2) < 60 * 60) return fxButton;
	return null;
}
game.down = function (x, y, obj) {
	var control = getTouchedControl(x, y);
	dragging = control;
	lastTouchObj = obj;
	if (control && control.down) {
		// Convert to local
		var local = control.toLocal(game.toGlobal({
			x: x,
			y: y
		}));
		control.down(local.x, local.y, obj);
	}
};
game.up = function (x, y, obj) {
	if (dragging && dragging.up) {
		var local = dragging.toLocal(game.toGlobal({
			x: x,
			y: y
		}));
		dragging.up(local.x, local.y, obj);
	}
	dragging = null;
	lastTouchObj = null;
};
game.move = function (x, y, obj) {
	if (dragging && dragging.move) {
		var local = dragging.toLocal(game.toGlobal({
			x: x,
			y: y
		}));
		dragging.move(local.x, local.y, obj);
	}
};
// --- Game update ---
game.update = function () {
	// Update discoball animation
	discoball.update();
	// Update equalizer animation
	equalizer.update();
	// Update laser show animation
	laserShow.update();
	// Update decks
	leftDeck.update();
	rightDeck.update();
	// Simulate beat
	var now = Date.now();
	beatTimer += now - lastTickTime;
	lastTickTime = now;
	if (beatTimer >= beatInterval) {
		beatTimer -= beatInterval;
		leftDeck.flashBeat();
		rightDeck.flashBeat();
		LK.getSound('beat').play();
		// Energy drops if not scratching or mixing
		if (!leftDeck.isScratching && !rightDeck.isScratching && crossfader.value > 0.2 && crossfader.value < 0.8) {
			energy -= 2;
			combo = 0;
		} else {
			// Combo up if scratching or crossfading
			combo += 1;
			score += 10 * combo;
			energy += 2;
			if (energy > 100) energy = 100;
		}
		if (energy < 0) energy = 0;
		// Update visuals
		scoreTxt.setText('Score: ' + score);
		if (combo > 1) {
			comboTxt.setText('Combo x' + combo);
		} else {
			comboTxt.setText('');
		}
	}
	// Update energy bar
	energyBar.width = 600 * (energy / 100);
	// Crossfader logic: adjust music volumes
	trackAVol = 1 - crossfader.value;
	trackBVol = crossfader.value;
	// (In a real game, would set music volumes here, but LK handles music globally.)
	// End game if energy is 0
	if (energy <= 0) {
		LK.effects.flashScreen(0xff0000, 1000);
		LK.showGameOver();
	}
	// Win if score is high
	if (score >= 5000) {
		LK.effects.flashScreen(0x00ff00, 1000);
		LK.showYouWin();
	}
};

===================================================================
--- original.js
+++ change.js
@@ -578,9 +578,15 @@
 					r = 1, g = 0, b = q;
 					break;
 			}
 			var tint = Math.round(r * 255) << 16 | Math.round(g * 255) << 8 | Math.round(b * 255);
-			head.tint = tint;
+			// Tween the head tint for smooth color change
+			tween(head, {
+				tint: tint
+			}, {
+				duration: 120,
+				easing: tween.linear
+			});
 		}
 		// Animate beams: sweep, flicker, and color pulse
 		for (var i = 0; i < beams.length; i++) {
 			var beamData = beams[i];