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

/**** 
* Classes
****/ 
// Define a class for scrolling backgrounds
var Background = Container.expand(function () {
	var self = Container.call(this);
	self.speed = 3;
	self.asset = null;
	self.init = function (assetName, startX) {
		self.asset = self.attachAsset(assetName, {
			anchorX: 0,
			anchorY: 0
		});
		self.x = startX;
		self.y = 0;
	};
	self.update = function () {
		self.x -= gameSpeed;
		// If background has moved completely off screen to the left, reposition it to the right
		if (self.x <= -1366) {
			self.x = 1366 * 2;
		}
	};
	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,
		scaleX: 1.5,
		scaleY: 1.5
	});
	// Create a smaller hitbox for collision detection
	self.hitbox = new Container();
	self.hitbox.width = enemyGraphics.width * 0.6; // 60% of the enemy width
	self.hitbox.height = enemyGraphics.height * 0.6; // 60% of the enemy height
	self.addChild(self.hitbox);
	self.speed = 5;
	self.update = function () {
		self.x -= gameSpeed;
		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,
		scaleX: 1.5,
		scaleY: 1.5
	});
	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 * 0.55 + 400) {
				// Ground level at 55% of screen height (45% from bottom) + 400px down
				self.y = 2732 * 0.55 + 400;
				self.isJumping = false;
				self.velocityY = 0;
			}
		}
	};
	self.jump = function () {
		if (!self.isJumping) {
			self.isJumping = true;
			self.velocityY = -self.jumpHeight;
		}
	};
});
// Define a class for street backgrounds (bottom part)
var StreetBackground = Container.expand(function () {
	var self = Container.call(this);
	self.speed = 3;
	self.asset = null;
	self.init = function (assetName, startX) {
		self.asset = self.attachAsset(assetName, {
			anchorX: 0,
			anchorY: 0,
			scaleY: 0.5 // Make the background half height
		});
		self.x = startX;
		self.y = 2732 * 0.5; // Position in the bottom half of the screen
	};
	self.update = function () {
		self.x -= gameSpeed;
		// If background has moved completely off screen to the left, reposition it to the right
		if (self.x <= -2048) {
			self.x = 2048 * 2 - gameSpeed;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1A0933 // Dark purple background
});

/**** 
* Game Code
****/ 
// Game speed control variable
var gameSpeed = 5;
// Create three scrolling backgrounds for the top part
var backgrounds = [];
// Create three scrolling backgrounds for the bottom part (street)
var streetBackgrounds = [];
// Create each background and position them
for (var i = 0; i < 3; i++) {
	var bg = new Background();
	bg.init('background' + (i + 1), i * 1366);
	backgrounds.push(bg);
	game.addChild(bg);
	// Create street backgrounds using different assets
	var streetBg = new StreetBackground();
	streetBg.init('street' + (i + 1), i * 2048);
	streetBackgrounds.push(streetBg);
	game.addChild(streetBg);
}
// Initialize player
var player = game.addChild(new Player());
player.x = 2048 / 2 - 500; // Move player back 500 pixels
player.y = 2732 * 0.55 + 400; // Position player at 45% from bottom of screen + 400px down
// 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 () {
	// Increase game speed as score increases for difficulty progression
	gameSpeed = 5 + Math.min(LK.getScore() / 10, 5); // Cap at max 10 speed
	// Update scrolling backgrounds
	for (var i = 0; i < backgrounds.length; i++) {
		backgrounds[i].update();
	}
	// Update street backgrounds
	for (var i = 0; i < streetBackgrounds.length; i++) {
		streetBackgrounds[i].update();
	}
	player.update();
	// Spawn enemies
	enemySpawnCounter++;
	if (enemySpawnCounter >= enemySpawnInterval) {
		var enemy = new Enemy();
		enemy.x = 2048;
		enemy.y = 2732 * 0.55 + 400; // Spawn enemies at 45% from bottom of screen + 400px down
		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].hitbox)) {
			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 library for animations

===================================================================
--- original.js
+++ change.js
@@ -110,9 +110,9 @@
 /**** 
 * Initialize Game
 ****/ 
 var game = new LK.Game({
-	backgroundColor: 0x87CEEB // Sky blue background
+	backgroundColor: 0x1A0933 // Dark purple background
 });
 
 /**** 
 * Game Code