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

/**** 
* Classes
****/ 
// Define a class for scrolling background
var Background = Container.expand(function () {
	var self = Container.call(this);
	// Create two background images for continuous scrolling
	var bg1 = self.attachAsset('background', {
		anchorX: 0,
		anchorY: 0
	});
	var bg2 = self.attachAsset('background', {
		anchorX: 0,
		anchorY: 0
	});
	// Position the second background right after the first one
	bg2.x = bg1.width;
	self.speed = 2; // Scrolling speed
	// Track positions for animation
	self.update = function () {
		// Move both backgrounds to the left
		bg1.x -= self.speed;
		bg2.x -= self.speed;
		// When the first background moves completely off-screen to the left
		if (bg1.x <= -bg1.width) {
			bg1.x = bg2.x + bg2.width;
		}
		// When the second background moves completely off-screen to the left
		if (bg2.x <= -bg2.width) {
			bg2.x = bg1.x + bg1.width;
		}
	};
	return self;
});
// Define a class for enemies
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.x -= self.speed;
		if (self.x < -50) {
			self.destroy();
		}
	};
});
//<Assets used in the game will automatically appear here>
// Define a class for the player character
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.jumpHeight = 40;
	self.isJumping = false;
	self.velocityY = 0;
	self.update = function () {
		if (self.isJumping) {
			self.y += self.velocityY;
			self.velocityY += 0.7; // Decreased gravity effect by 30%
			if (self.y >= 2732 / 2) {
				// Ground level
				self.y = 2732 / 2;
				self.isJumping = false;
				self.velocityY = 0;
			}
		}
	};
	self.jump = function () {
		if (!self.isJumping) {
			self.isJumping = true;
			self.velocityY = -self.jumpHeight;
			LK.getSound('jump').play();
		}
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB // Sky blue background
});

/**** 
* Game Code
****/ 
// Create scrolling background
var background = game.addChild(new Background());
background.x = 0;
background.y = 0;
// Initialize player
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 / 2;
// Initialize enemies
var enemies = [];
var enemySpawnInterval = 100;
var enemySpawnCounter = 0;
// Create a new Text2 object to display the score
var scoreText = new Text2('0', {
	size: 100,
	fill: 0xFFFFFF
});
// Add the score text to the game GUI at the top center of the screen
LK.gui.top.addChild(scoreText);
scoreText.x = 2048 / 2;
scoreText.y = 0;
// Handle game updates
game.update = function () {
	// Update background scrolling
	background.update();
	player.update();
	// Spawn enemies
	enemySpawnCounter++;
	if (enemySpawnCounter >= enemySpawnInterval) {
		var enemy = new Enemy();
		enemy.x = 2048;
		enemy.y = 2732 / 2;
		enemies.push(enemy);
		game.addChild(enemy);
		// Randomize the spawn interval for the next enemy
		enemySpawnInterval = Math.floor(Math.random() * 150) + 50;
		enemySpawnCounter = 0;
	}
	// Update enemies
	for (var j = enemies.length - 1; j >= 0; j--) {
		enemies[j].update();
		if (player.intersects(enemies[j])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		} else if (player.x > enemies[j].x && !enemies[j].passed) {
			enemies[j].passed = true;
			LK.setScore(LK.getScore() + 1);
			scoreText.setText(LK.getScore());
		}
	}
};
// Handle player jump
game.down = function (x, y, obj) {
	player.jump();
};
// Import tween plugin for animations

===================================================================
--- original.js
+++ change.js
@@ -1,7 +1,43 @@
 /**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
 * Classes
 ****/ 
+// Define a class for scrolling background
+var Background = Container.expand(function () {
+	var self = Container.call(this);
+	// Create two background images for continuous scrolling
+	var bg1 = self.attachAsset('background', {
+		anchorX: 0,
+		anchorY: 0
+	});
+	var bg2 = self.attachAsset('background', {
+		anchorX: 0,
+		anchorY: 0
+	});
+	// Position the second background right after the first one
+	bg2.x = bg1.width;
+	self.speed = 2; // Scrolling speed
+	// Track positions for animation
+	self.update = function () {
+		// Move both backgrounds to the left
+		bg1.x -= self.speed;
+		bg2.x -= self.speed;
+		// When the first background moves completely off-screen to the left
+		if (bg1.x <= -bg1.width) {
+			bg1.x = bg2.x + bg2.width;
+		}
+		// When the second background moves completely off-screen to the left
+		if (bg2.x <= -bg2.width) {
+			bg2.x = bg1.x + bg1.width;
+		}
+	};
+	return self;
+});
 // Define a class for enemies
 var Enemy = Container.expand(function () {
 	var self = Container.call(this);
 	var enemyGraphics = self.attachAsset('enemy', {
@@ -58,12 +94,10 @@
 
 /**** 
 * Game Code
 ****/ 
-var background = game.addChild(LK.getAsset('background', {
-	anchorX: 0,
-	anchorY: 0
-}));
+// Create scrolling background
+var background = game.addChild(new Background());
 background.x = 0;
 background.y = 0;
 // Initialize player
 var player = game.addChild(new Player());
@@ -83,8 +117,10 @@
 scoreText.x = 2048 / 2;
 scoreText.y = 0;
 // Handle game updates
 game.update = function () {
+	// Update background scrolling
+	background.update();
 	player.update();
 	// Spawn enemies
 	enemySpawnCounter++;
 	if (enemySpawnCounter >= enemySpawnInterval) {
@@ -112,5 +148,6 @@
 };
 // Handle player jump
 game.down = function (x, y, obj) {
 	player.jump();
-};
\ No newline at end of file
+};
+// Import tween plugin for animations
\ No newline at end of file