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

/**** 
* Classes
****/ 
// Define the Button class
var Button = Container.expand(function () {
	var self = Container.call(this);
	var buttonGraphics = self.attachAsset('button', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});
// Define the Key class
var Key = Container.expand(function () {
	var self = Container.call(this);
	var keyTypes = ['key1', 'key2', 'key3'];
	var keyType = keyTypes[Math.floor(Math.random() * keyTypes.length)];
	var keyGraphics = self.attachAsset(keyType, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		self.x -= 5; // Move the key to the left
	};
	return self;
});
// Define the Obstacle class
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5; // Initial speed
	// Update method for obstacle movement
	self.update = function () {
		self.x -= self.speed;
	};
	return self;
});
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Define the Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('character', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.layer = 1; // Start on the middle layer
	self.speed = 10; // Initial speed
	// Method to move the player up a layer
	self.moveUp = function () {
		if (self.layer > 0) {
			self.layer--;
			tween(self, {
				y: self.y - 450
			}, {
				duration: 300,
				easing: tween.easeInOut
			});
		}
	};
	// Method to move the player down a layer
	self.moveDown = function () {
		if (self.layer < 2) {
			self.layer++;
			tween(self, {
				y: self.y + 450
			}, {
				duration: 300,
				easing: tween.easeInOut
			});
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x0000FF //Init game with blue background
});

/**** 
* Game Code
****/ 
function spawnKey() {
	var lanes = [-450, 0, 450];
	var lane = lanes[Math.floor(Math.random() * lanes.length)];
	var key = new Key();
	var keyType = key.keyType; // Define keyType within the function scope
	key.x = 2048;
	key.y = 1366 - 450 + lane;
	game.addChild(key);
	// Check for collision with player
	key.update = function () {
		this.x -= 5;
		if (this.intersects(player)) {
			var scoreIncrement = 0;
			var message = "";
			switch (keyType) {
				case 'key1':
					scoreIncrement = 2;
					message = "+2 score";
					break;
				case 'key2':
					scoreIncrement = 5;
					message = "+5 score";
					break;
				case 'key3':
					scoreIncrement = 7;
					message = "+7 score";
					break;
			}
			score += scoreIncrement;
			scoreTxt.setText(score);
			// Display score increment message
			var scoreMessage = new Text2(message, {
				size: 100,
				fill: 0xFFFFFF
			});
			scoreMessage.x = this.x;
			scoreMessage.y = this.y;
			game.addChild(scoreMessage);
			// Fade out and remove the message
			tween(scoreMessage, {
				alpha: 0
			}, {
				duration: 1000,
				onFinish: function onFinish() {
					scoreMessage.destroy();
				}
			});
			this.destroy();
		}
	};
}
var background = game.attachAsset('background', {
	anchorX: 0.0,
	anchorY: 0.0
});
background.x = 0;
background.y = 0;
// Initialize player
var player = new Player();
player.x = 200;
player.y = 1366 - 450; // Start on the middle layer
game.addChild(player);
// Create a variable to keep track of the current character asset
var characterAssets = ['character', 'c2', 'c3', 'c4'];
var currentCharacterAsset = 0;
// Create a timer to change the character asset every 0.2 seconds
LK.setInterval(function () {
	// Remove the current character asset
	player.removeChild(player.children[0]);
	// Update the current character asset index
	currentCharacterAsset = (currentCharacterAsset + 1) % characterAssets.length;
	// Attach the new character asset
	player.attachAsset(characterAssets[currentCharacterAsset], {
		anchorX: 0.5,
		anchorY: 0.5
	});
}, 200);
// Initialize buttons
var buttonUp = new Button();
buttonUp.x = 1024;
buttonUp.y = 2732 - 600; // Position at the bottom of the screen
buttonUp.scale.set(2); // Increase the size of the button
game.addChild(buttonUp);
var buttonDown = new Button();
buttonDown.x = 1024;
buttonDown.y = 2732 - 300; // Position at the bottom of the screen
buttonDown.scale.set(2); // Increase the size of the button
buttonDown.rotation = Math.PI; // Rotate the button by 180 degrees
game.addChild(buttonDown);
// Initialize obstacles array
var obstacles = [];
// Initialize score
var score = 0;
var scoreTxt = new Text2('0', {
	size: 150,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Function to create obstacles
function createObstacle() {
	var lanes = [-450, 0, 450];
	var selectedLanes = [lanes[Math.floor(Math.random() * lanes.length)]];
	// 30% chance to spawn a second obstacle in a different lane
	if (Math.random() < 0.3) {
		var secondLane;
		do {
			secondLane = lanes[Math.floor(Math.random() * lanes.length)];
		} while (selectedLanes.includes(secondLane));
		selectedLanes.push(secondLane);
	}
	selectedLanes.forEach(function (lane) {
		var obstacle = new Obstacle();
		obstacle.x = 2048;
		obstacle.y = 1366 - 450 + lane;
		obstacles.push(obstacle);
		game.addChild(obstacle);
	});
}
// Function to update game speed
function updateSpeed() {
	var speedIncrease = score * 0.01; // Increase speed based on score
	player.speed += speedIncrease;
	obstacles.forEach(function (obstacle) {
		obstacle.speed += speedIncrease;
	});
}
// Handle swipe up and down
game.move = function (x, y, obj) {
	if (obj.event && obj.event.deltaY < 0) {
		player.moveUp();
	} else if (obj.event && obj.event.deltaY > 0) {
		player.moveDown();
	}
};
// Handle button presses
buttonUp.down = function (x, y, obj) {
	if (!buttonUp.cooldown && !buttonDown.cooldown) {
		player.moveUp();
		buttonUp.cooldown = true;
		buttonDown.cooldown = true;
		LK.setTimeout(function () {
			buttonUp.cooldown = false;
			buttonDown.cooldown = false;
		}, 310);
	}
};
buttonDown.down = function (x, y, obj) {
	if (!buttonUp.cooldown && !buttonDown.cooldown) {
		player.moveDown();
		buttonUp.cooldown = true;
		buttonDown.cooldown = true;
		LK.setTimeout(function () {
			buttonUp.cooldown = false;
			buttonDown.cooldown = false;
		}, 310);
	}
};
// Game update loop
game.update = function () {
	// Update obstacles
	for (var i = obstacles.length - 1; i >= 0; i--) {
		obstacles[i].update();
		if (obstacles[i].x < -100) {
			obstacles[i].destroy();
			obstacles.splice(i, 1);
			score++;
			scoreTxt.setText(score);
		}
		if (score > 0 && score % 5 === 0 && !game.keySpawned) {
			spawnKey();
			game.keySpawned = true;
		} else if (score % 5 !== 0) {
			game.keySpawned = false;
		}
		if (obstacles[i] && obstacles[i].intersects(player)) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	}
	// Create new obstacles
	if (LK.ticks % 120 == 0) {
		createObstacle();
	}
	// Update speed
	updateSpeed();
};

===================================================================
--- original.js
+++ change.js