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

/**** 
* Classes
****/ 
var DebugPoints = Container.expand(function () {
	var self = Container.call(this);
	// Create points for face tracking debugging
	self.points = {
		leftEye: self.attachAsset('debugFacePoints', {
			anchorX: 0.5,
			anchorY: 0.5
		}),
		rightEye: self.attachAsset('debugFacePoints', {
			anchorX: 0.5,
			anchorY: 0.5
		}),
		noseTip: self.attachAsset('debugFacePoints', {
			anchorX: 0.5,
			anchorY: 0.5
		}),
		mouthCenter: self.attachAsset('debugFacePoints', {
			anchorX: 0.5,
			anchorY: 0.5
		}),
		upperLip: self.attachAsset('debugFacePoints', {
			anchorX: 0.5,
			anchorY: 0.5
		}),
		lowerLip: self.attachAsset('debugFacePoints', {
			anchorX: 0.5,
			anchorY: 0.5
		}),
		chin: self.attachAsset('debugFacePoints', {
			anchorX: 0.5,
			anchorY: 0.5
		})
	};
	// Update debug points to match face points
	self.update = function () {
		if (!facekit) {
			return;
		}
		if (facekit.leftEye) {
			self.points.leftEye.x = facekit.leftEye.x;
			self.points.leftEye.y = facekit.leftEye.y;
		}
		if (facekit.rightEye) {
			self.points.rightEye.x = facekit.rightEye.x;
			self.points.rightEye.y = facekit.rightEye.y;
		}
		if (facekit.noseTip) {
			self.points.noseTip.x = facekit.noseTip.x;
			self.points.noseTip.y = facekit.noseTip.y;
		}
		if (facekit.mouthCenter) {
			self.points.mouthCenter.x = facekit.mouthCenter.x;
			self.points.mouthCenter.y = facekit.mouthCenter.y;
		}
		if (facekit.upperLip) {
			self.points.upperLip.x = facekit.upperLip.x;
			self.points.upperLip.y = facekit.upperLip.y;
		}
		if (facekit.lowerLip) {
			self.points.lowerLip.x = facekit.lowerLip.x;
			self.points.lowerLip.y = facekit.lowerLip.y;
		}
		if (facekit.chin) {
			self.points.chin.x = facekit.chin.x;
			self.points.chin.y = facekit.chin.y;
		}
	};
	return self;
});
var SwitchButton = Container.expand(function () {
	var self = Container.call(this);
	// Create button
	var buttonBackground = self.attachAsset('trollFaceButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Add text
	var buttonText = new Text2('Switch', {
		size: 50,
		fill: 0xFFFFFF
	});
	buttonText.anchor.set(0.5, 0.5);
	self.addChild(buttonText);
	// Handle press event
	self.down = function (x, y, obj) {
		// Scale down for press effect
		tween(buttonBackground, {
			scaleX: 0.9,
			scaleY: 0.9
		}, {
			duration: 100
		});
	};
	// Handle release event
	self.up = function (x, y, obj) {
		// Scale back up on release
		tween(buttonBackground, {
			scaleX: 1,
			scaleY: 1
		}, {
			duration: 100,
			onFinish: function onFinish() {
				// Trigger switch event
				if (self.onSwitch) {
					self.onSwitch();
				}
			}
		});
	};
	return self;
});
var TrollFace = Container.expand(function () {
	var self = Container.call(this);
	// Properties
	self.currentStyle = 1;
	self.elements = {};
	// Initialize the troll face elements
	self.initialize = function (style) {
		// Clear previous elements
		self.removeAllElements();
		// Create new elements for the selected style
		self.createFaceElements(style || self.currentStyle);
	};
	// Create face elements for a specific style
	self.createFaceElements = function (style) {
		// Create head
		self.elements.head = self.attachAsset('trollHead' + style, {
			anchorX: 0.5,
			anchorY: 0.5,
			scale: 1
		});
		// Create eyes
		self.elements.leftEye = self.attachAsset('trollLeftEye' + style, {
			anchorX: 0.5,
			anchorY: 0.5,
			scale: 1
		});
		self.elements.rightEye = self.attachAsset('trollRightEye' + style, {
			anchorX: 0.5,
			anchorY: 0.5,
			scale: 1
		});
		// Create mouth
		self.elements.mouth = self.attachAsset('trollMouth' + style, {
			anchorX: 0.5,
			anchorY: 0.5,
			scale: 1
		});
	};
	// Remove all face elements
	self.removeAllElements = function () {
		if (self.elements.head) {
			self.removeChild(self.elements.head);
		}
		if (self.elements.leftEye) {
			self.removeChild(self.elements.leftEye);
		}
		if (self.elements.rightEye) {
			self.removeChild(self.elements.rightEye);
		}
		if (self.elements.mouth) {
			self.removeChild(self.elements.mouth);
		}
	};
	// Change to the next troll face style
	self.nextStyle = function () {
		self.currentStyle = self.currentStyle % 3 + 1;
		self.initialize();
		return self.currentStyle;
	};
	// Update face elements to match real face
	self.updateFacePosition = function () {
		if (!facekit) {
			return;
		}
		// Position the head at the center of the face
		if (self.elements.head) {
			// Head follows overall face position
			self.elements.head.x = 0;
			self.elements.head.y = 0;
			// Scale head based on distance between eyes
			if (facekit.leftEye && facekit.rightEye) {
				var eyeDistance = Math.sqrt(Math.pow(facekit.leftEye.x - facekit.rightEye.x, 2) + Math.pow(facekit.leftEye.y - facekit.rightEye.y, 2));
				var scale = eyeDistance / 200;
				self.elements.head.scale = {
					x: scale * 1.5,
					y: scale * 1.8
				}; // Ensure scale is an object with x and y properties
			}
		}
		// Position the eyes to match real eyes
		if (self.elements.leftEye && facekit.leftEye) {
			self.elements.leftEye.x = facekit.leftEye.x - self.x;
			self.elements.leftEye.y = facekit.leftEye.y - self.y;
			// Scale eyes based on face scale
			if (self.elements.head && self.elements.head.scale) {
				self.elements.leftEye.scale = {
					x: self.elements.head.scale.x * 0.5,
					y: self.elements.head.scale.y * 0.5
				}; // Ensure scale is an object with x and y properties 
			}
		}
		if (self.elements.rightEye && facekit.rightEye) {
			self.elements.rightEye.x = facekit.rightEye.x - self.x;
			self.elements.rightEye.y = facekit.rightEye.y - self.y;
			// Scale eyes based on face scale
			if (self.elements.head && self.elements.head.scale) {
				self.elements.rightEye.scale = {
					x: self.elements.head.scale.x * 0.5,
					y: self.elements.head.scale.y * 0.5
				}; // Ensure scale is an object with x and y properties 
			}
		}
		// Position the mouth to match real mouth
		if (self.elements.mouth && facekit.mouthCenter) {
			self.elements.mouth.x = facekit.mouthCenter.x - self.x;
			self.elements.mouth.y = facekit.mouthCenter.y - self.y;
			// Scale mouth based on face scale
			if (self.elements.head && self.elements.head.scale) {
				self.elements.mouth.scale = {
					x: self.elements.head.scale.x * 0.7,
					y: self.elements.head.scale.y * 0.7
				}; // Ensure scale is an object with x and y properties
			}
			// Adjust mouth height based on whether mouth is open
			if (facekit.mouthOpen) {
				self.elements.mouth.scale.y = self.elements.mouth.scale.y * 1.5;
			}
		}
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Add background asset
var background = LK.getAsset('whiteBackground', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 2732 / 2
});
game.addChild(background);
var instructionText = new Text2('Tap anywhere to change troll face', {
	size: 60,
	fill: 0xFFFFFF
});
instructionText.anchor.set(0.5, 0);
LK.gui.top.addChild(instructionText);
instructionText.y = 50;
// Add style text
var styleText = new Text2('Style: 1/3', {
	size: 50,
	fill: 0xFFFFFF
});
styleText.anchor.set(0.5, 0);
LK.gui.top.addChild(styleText);
styleText.y = 120;
// Load the last used style from storage
var lastStyle = storage.lastTrollStyle || 1;
// Create the troll face
var trollFace = new TrollFace();
trollFace.currentStyle = lastStyle;
trollFace.initialize();
game.addChild(trollFace);
// Set the troll face position to the center of the screen
trollFace.x = 2048 / 2;
trollFace.y = 2732 / 2;
// Debug mode (turn on for development, off for production)
var debugMode = false;
var debugPoints = null;
if (debugMode) {
	debugPoints = new DebugButton();
	game.addChild(debugPoints);
}
// Handle tap anywhere on the screen to change face
game.down = function (x, y, obj) {
	// Switch to the next troll face style
	var newStyle = trollFace.nextStyle();
	// Save the current style to storage
	storage.lastTrollStyle = newStyle;
	// Update the style text
	styleText.setText('Style: ' + newStyle + '/3');
	// Play switch sound
	LK.getSound('switchTroll').play();
};
// Update function called every frame
game.update = function () {
	// Update troll face position to match real face
	if (facekit && facekit.leftEye && facekit.rightEye) {
		// Calculate the center position between the eyes
		var centerX = (facekit.leftEye.x + facekit.rightEye.x) / 2;
		var centerY = (facekit.leftEye.y + facekit.rightEye.y) / 2;
		// Set the troll face position to the center of the face
		trollFace.x = centerX;
		trollFace.y = centerY;
		// Update face elements to match real face features
		trollFace.updateFacePosition();
	}
	// Update debug points if in debug mode
	if (debugMode && debugPoints) {
		debugPoints.update();
	}
};

===================================================================
--- original.js
+++ change.js
@@ -250,9 +250,16 @@
 
 /**** 
 * Game Code
 ****/ 
-// Add instruction text
+// Add background asset
+var background = LK.getAsset('whiteBackground', {
+	anchorX: 0.5,
+	anchorY: 0.5,
+	x: 2048 / 2,
+	y: 2732 / 2
+});
+game.addChild(background);
 var instructionText = new Text2('Tap anywhere to change troll face', {
 	size: 60,
 	fill: 0xFFFFFF
 });