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

/**** 
* Classes
****/ 
var Obstacle = Container.expand(function (type) {
	var self = Container.call(this);
	var obstacleGraphics;
	self.type = type || 'step';
	self.speed = 0;
	if (self.type === 'step') {
		obstacleGraphics = self.attachAsset('obstacle', {
			anchorX: 0.5,
			anchorY: 1.0
		});
	} else if (self.type === 'barrier') {
		obstacleGraphics = self.attachAsset('barrier', {
			anchorX: 0.5,
			anchorY: 1.0
		});
	} else if (self.type === 'firePit') {
		obstacleGraphics = self.attachAsset('firePit', {
			anchorX: 0.5,
			anchorY: 0.5
		});
	} else if (self.type === 'car') {
		obstacleGraphics = self.attachAsset('car', {
			anchorX: 0.5,
			anchorY: 1.0
		});
	} else if (self.type === 'newObstacle1') {
		obstacleGraphics = self.attachAsset('newObstacle1', {
			anchorX: 0.5,
			anchorY: 1.0
		});
	} else if (self.type === 'newObstacle2') {
		obstacleGraphics = self.attachAsset('newObstacle2', {
			anchorX: 0.5,
			anchorY: 1.0
		});
	}
	self.update = function () {
		self.x -= self.speed;
	};
	self.getCollisionBounds = function () {
		return {
			x: self.x - obstacleGraphics.width / 2,
			y: self.y - obstacleGraphics.height,
			width: obstacleGraphics.width,
			height: obstacleGraphics.height
		};
	};
	self.isLowObstacle = function () {
		return self.type === 'step' || self.type === 'firePit';
	};
	self.isHighObstacle = function () {
		return self.type === 'barrier';
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.update = function () {
		if (self.isJumping) {
			self.y -= self.jumpSpeed;
			self.jumpSpeed -= 1; // Gravity effect
			if (self.y >= self.groundY) {
				self.y = self.groundY;
				self.isJumping = false;
			}
		}
	};
	self.getCollisionBounds = function () {
		return {
			x: self.x - playerGraphics.width / 2,
			y: self.y - playerGraphics.height,
			width: playerGraphics.width,
			height: playerGraphics.height
		};
	};
	self.isJumping = false;
	self.jumpSpeed = 0;
	self.jump = function () {
		if (!self.isJumping) {
			self.isJumping = true;
			self.jumpSpeed = 40; // Increased initial jump speed for higher jump
		}
	};
	return self;
});
var RoadLine = Container.expand(function () {
	var self = Container.call(this);
	var lineGraphics = self.attachAsset('roadLine', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0;
	self.update = function () {
		self.x -= self.speed;
		if (self.x < -lineGraphics.width) {
			self.x = 2048 + lineGraphics.width;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000,
	width: 2048,
	height: 2732
});

/**** 
* Game Code
****/ 
// Initialize background image asset
var player;
var obstacles = [];
var roadLines = [];
var gameSpeed = 10;
var spawnTimer = 0;
var minSpawnTime = 60;
var maxSpawnTime = 120;
var nextSpawnTime = 100;
var distance = 0;
var isGameOver = false;
var shouldSpawnObstacle = true;
// Add background theme
var background = game.addChild(LK.getAsset('backgroundTheme', {
	anchorX: 0.5,
	anchorY: 0.5
}));
background.x = 2048 / 2;
background.y = 2732 / 2;
// Create road
var road = game.addChild(LK.getAsset('road', {
	anchorX: 0.5,
	anchorY: 0
}));
road.x = 2048 / 2;
road.y = 2732 - 600;
// Create player
player = game.addChild(new Player());
player.x = 300;
player.y = 2732 - 600;
player.groundY = player.y;
// Create road lines
for (var i = 0; i < 20; i++) {
	var roadLine = new RoadLine();
	roadLine.x = i * 200;
	roadLine.y = 2732 - 600 + 300;
	roadLine.speed = gameSpeed;
	roadLines.push(roadLine);
	game.addChild(roadLine);
}
// Score display
var scoreTxt = new Text2('0m', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Input Handling
function handleDown(x, y, obj) {
	if (y < player.y - 100) {
		// Detect swipe up
		player.jump();
	}
}
// Keyboard controls for testing
game.keyDown = function (key) {};
game.down = handleDown;
// Collision detection
function checkCollision(playerBounds, obstacleBounds) {
	return !(playerBounds.x + playerBounds.width < obstacleBounds.x || playerBounds.x > obstacleBounds.x + obstacleBounds.width || playerBounds.y + playerBounds.height < obstacleBounds.y || playerBounds.y > obstacleBounds.y + obstacleBounds.height);
}
// Spawn obstacles
function spawnObstacle() {
	if (!shouldSpawnObstacle) {
		return;
	}
	var types = ['step', 'barrier', 'firePit', 'car', 'newObstacle1', 'newObstacle2'];
	var type = types[Math.floor(Math.random() * types.length)];
	var obstacle = new Obstacle(type);
	obstacle.x = 2048 + 100;
	obstacle.y = 2732 - 600;
	obstacle.speed = gameSpeed;
	if (type === 'firePit') {
		obstacle.y += 50;
	}
	if (type === 'car') {
		obstacle.x += Math.random() * 500;
	}
	obstacles.push(obstacle);
	game.addChild(obstacle);
	nextSpawnTime = minSpawnTime + Math.floor(Math.random() * (maxSpawnTime - minSpawnTime));
	spawnTimer = 0;
}
// Game over handling
function gameOver() {
	if (!isGameOver) {
		isGameOver = true;
		shouldSpawnObstacle = false;
		LK.getSound('crash').play();
		var highScore = storage.highScore || 0;
		if (distance > highScore) {
			storage.highScore = distance;
		}
		LK.effects.flashScreen(0xff0000, 500);
		LK.setTimeout(function () {
			LK.showGameOver();
		}, 1000);
	}
}
// Main game loop
game.update = function () {
	if (isGameOver) {
		return;
	}
	// Update score
	distance += 1;
	scoreTxt.setText(Math.floor(distance / 10) + "m");
	// Increase difficulty
	if (distance % 500 === 0 && gameSpeed < 25) {
		gameSpeed += 0.5;
		roadLines.forEach(function (line) {
			return line.speed = gameSpeed;
		});
		obstacles.forEach(function (obs) {
			return obs.speed = gameSpeed;
		});
		if (minSpawnTime > 30) {
			minSpawnTime -= 2;
		}
		if (maxSpawnTime > 60) {
			maxSpawnTime -= 5;
		}
	}
	// Update road lines
	roadLines.forEach(function (line) {
		return line.update();
	});
	// Spawn obstacles
	spawnTimer++;
	if (spawnTimer >= nextSpawnTime) {
		spawnObstacle();
	}
	// Update player
	player.update();
	// Check collisions
	for (var j = obstacles.length - 1; j >= 0; j--) {
		var obstacle = obstacles[j];
		obstacle.update();
		if (obstacle.x < -200) {
			obstacle.destroy();
			obstacles.splice(j, 1);
			continue;
		}
		var playerBounds = player.getCollisionBounds();
		var obstacleBounds = obstacle.getCollisionBounds();
		var collisionDetected = false;
		if (obstacle.isLowObstacle() || obstacle.isHighObstacle() || obstacle.type === 'car' || obstacle.type === 'newObstacle1' || obstacle.type === 'newObstacle2') {
			collisionDetected = checkCollision(playerBounds, obstacleBounds);
		}
		if (collisionDetected) {
			gameOver();
			break;
		}
	}
};
// Start music
LK.playMusic('bgmusic', {
	fade: {
		start: 0,
		end: 0.5,
		duration: 1000
	}
});
// Debug controls

===================================================================
--- original.js
+++ change.js
@@ -122,8 +122,9 @@
 
 /**** 
 * Game Code
 ****/ 
+// Initialize background image asset
 var player;
 var obstacles = [];
 var roadLines = [];
 var gameSpeed = 10;
@@ -133,8 +134,15 @@
 var nextSpawnTime = 100;
 var distance = 0;
 var isGameOver = false;
 var shouldSpawnObstacle = true;
+// Add background theme
+var background = game.addChild(LK.getAsset('backgroundTheme', {
+	anchorX: 0.5,
+	anchorY: 0.5
+}));
+background.x = 2048 / 2;
+background.y = 2732 / 2;
 // Create road
 var road = game.addChild(LK.getAsset('road', {
 	anchorX: 0.5,
 	anchorY: 0