/**** 
* Classes
****/ 
// Bot class
var Bot = Container.expand(function () {
	var self = Container.call(this);
	var botGraphics = self.attachAsset('bot', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3;
	self.update = function () {
		self.y += self.speed;
		// Check if the bot has crossed the line and remove it
		if (self.y > 2732) {
			self.destroy();
			var index = bots.indexOf(self);
			if (index > -1) {
				bots.splice(index, 1);
			}
		}
		// Bot firing logic
		if (LK.ticks % 120 == 0) {
			// Adjust the firing rate by changing the modulus value
			var botBullet = new BotBullet();
			botBullet.x = self.x;
			botBullet.y = self.y;
			game.addChild(botBullet);
			botBullets.push(botBullet);
		}
	};
});
// BotBullet class
var BotBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.y += self.speed;
	};
});
// Bullet class
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.update = function () {
		self.y -= self.speed;
	};
});
// The assets will be automatically created and loaded by the LK engine
// Player class
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.update = function () {
		// Player movement logic goes here
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000 //Init game with black background 
});

/**** 
* Game Code
****/ 
// Initialize player
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 - 100;
// Initialize player lives
var playerLives = 4;
// Initialize level
var level = 1;
// Initialize score display
var score = 0;
var scoreTxt = new Text2('Score: 0', {
	size: 100,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Initialize level display
var levelTxt = new Text2('Level: 1', {
	size: 100,
	fill: "#ffffff"
});
levelTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(levelTxt);
// Initialize lives display
var livesTxt = new Text2('Lives: 4', {
	size: 100,
	fill: "#ffffff"
});
livesTxt.anchor.set(1, 0); // Set anchor to the right edge
LK.gui.topRight.addChild(livesTxt); // Position lives display at the top-right corner
// Initialize bots and bullets
var bots = [];
var bullets = [];
var botBullets = [];
// Game update function
game.update = function () {
	// Update player
	player.update();
	// Update all game objects and handle collisions
	for (var i = bots.length - 1; i >= 0; i--) {
		bots[i].update();
		if (bots[i].intersects(player)) {
			playerLives--;
			if (playerLives <= 0) {
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver();
			} else {
				livesTxt.setText('Lives: ' + playerLives);
			}
		}
		// Update bot bullets within the same loop
		for (var j = botBullets.length - 1; j >= 0; j--) {
			botBullets[j].update();
			if (botBullets[j].intersects(player)) {
				botBullets[j].destroy();
				botBullets.splice(j, 1);
				for (var i = bullets.length - 1; i >= 0; i--) {
					bullets[i].update();
					for (var j = bots.length - 1; j >= 0; j--) {
						if (bullets[i].intersects(bots[j])) {
							bullets[i].destroy();
							bullets.splice(i, 1);
							bots[j].destroy();
							bots.splice(j, 1);
							score += 10;
							scoreTxt.setText('Score: ' + score);
							break;
						}
					}
				}
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver();
			}
		}
	}
	// Autofire bullets
	if (LK.ticks % 90 == 0) {
		// Reduced firing frequency
		var bullet = new Bullet();
		bullet.x = player.x;
		bullet.y = player.y - player.height / 2;
		bullets.push(bullet);
		game.addChild(bullet);
		// Set a timeout to destroy the bullet after 4 seconds
		LK.setTimeout(function () {
			if (bullets.includes(bullet)) {
				bullet.destroy();
				bullets.splice(bullets.indexOf(bullet), 1);
			}
		}, 4000);
	}
	// Collision detection
	for (var i = bots.length - 1; i >= 0; i--) {
		for (var j = bullets.length - 1; j >= 0; j--) {
			if (bots[i].intersects(bullets[j])) {
				bullets[j].destroy();
				bullets.splice(j, 1);
				bots[i].destroy();
				bots.splice(i, 1);
				// Update score
				score += 10;
				scoreTxt.setText('Score: ' + score);
				// Increase level and difficulty
				if (score % 100 === 0) {
					level++;
					levelTxt.setText('Level: ' + level);
					// Increase bot speed
					for (var i = 0; i < bots.length; i++) {
						bots[i].speed += 0.5;
					}
					// Increase bot spawn rate
					if (LK.ticks % (240 - level * 10) == 0) {
						var bot = new Bot();
						bot.x = Math.random() * 2048;
						bot.y = 0;
						bots.push(bot);
						game.addChild(bot);
					}
				}
				break;
			}
		}
	}
	// Spawn bots
	if (LK.ticks % 240 == 0) {
		// Reduced spawning frequency
		var bot = new Bot();
		bot.x = Math.random() * 2048;
		bot.y = 0;
		bots.push(bot);
		game.addChild(bot);
	}
};
// Player control
game.down = function (x, y, obj) {
	player.x = x;
	player.y = y;
};
game.move = function (x, y, obj) {
	player.x = x;
	player.y = y;
};
game.up = function (x, y, obj) {
	var bullet = new Bullet();
	bullet.x = player.x;
	bullet.y = player.y;
	bullets.push(bullet);
	game.addChild(bullet);
};

===================================================================
--- original.js
+++ change.js
@@ -83,16 +83,25 @@
 player.x = 2048 / 2;
 player.y = 2732 - 100;
 // Initialize player lives
 var playerLives = 4;
+// Initialize level
+var level = 1;
 // Initialize score display
 var score = 0;
 var scoreTxt = new Text2('Score: 0', {
 	size: 100,
 	fill: "#ffffff"
 });
 scoreTxt.anchor.set(0.5, 0);
 LK.gui.top.addChild(scoreTxt);
+// Initialize level display
+var levelTxt = new Text2('Level: 1', {
+	size: 100,
+	fill: "#ffffff"
+});
+levelTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(levelTxt);
 // Initialize lives display
 var livesTxt = new Text2('Lives: 4', {
 	size: 100,
 	fill: "#ffffff"
@@ -170,8 +179,25 @@
 				bots.splice(i, 1);
 				// Update score
 				score += 10;
 				scoreTxt.setText('Score: ' + score);
+				// Increase level and difficulty
+				if (score % 100 === 0) {
+					level++;
+					levelTxt.setText('Level: ' + level);
+					// Increase bot speed
+					for (var i = 0; i < bots.length; i++) {
+						bots[i].speed += 0.5;
+					}
+					// Increase bot spawn rate
+					if (LK.ticks % (240 - level * 10) == 0) {
+						var bot = new Bot();
+						bot.x = Math.random() * 2048;
+						bot.y = 0;
+						bots.push(bot);
+						game.addChild(bot);
+					}
+				}
 				break;
 			}
 		}
 	}