/**** 
* Classes
****/ 
var Bullet = Container.expand(function (gameInstance) {
	var self = Container.call(this);
	self.game = gameInstance;
	self.game = gameInstance;
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self._move_migrated = function () {
		self.x += 240;
		if (self.x > 2148) {
			self.destroy();
		}
	};
});
var Enemy = Container.expand(function (gameInstance) {
	var self = Container.call(this);
	self.game = gameInstance;
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self._move_migrated = function () {
		self.y += 25.6 * 0.7 * 0.6;
		if (self.y > 2732) {
			self.destroy();
		}
	};
});
var FrameRateCounter = Container.expand(function () {
	var self = Container.call(this);
	self.lastTime = Date.now();
	self.frameCount = 0;
	self.framerate = 0;
	self.display = new Text2('FPS: 0', {
		size: 150,
		fill: '#000000'
	});
	self.display.anchor.set(1, 0);
	self.updateDisplay = function () {
		self.display.setText('FPS: ' + Math.round(self.framerate).toString());
	};
	self._update_migrated = function () {
		var currentTime = Date.now();
		self.frameCount++;
		if (currentTime - self.lastTime >= 1000) {
			self.framerate = self.frameCount;
			self.updateDisplay();
			self.frameCount = 0;
			self.lastTime = currentTime;
		}
	};
});
var Plain = Container.expand(function () {
	var self = Container.call(this);
	var plainGraphics = self.attachAsset('correct_plain_asset_id', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	plainGraphics.scale.x = 2;
	plainGraphics.scale.y = 2;
	plainGraphics.alpha = 0;
	self.shoot = function (enemies, bulletsContainer) {
		if (self.cooldownTimer <= 0 && enemies.length > 0) {
			var bullet = new Bullet(self);
			bullet.x = self.x;
			bullet.y = self.y;
			bulletsContainer.addChild(bullet);
			self.cooldownTimer = self.cooldown;
		}
		self.cooldownTimer--;
	};
});
var Tower = Container.expand(function (gameInstance) {
	var self = Container.call(this);
	self.game = gameInstance;
	self.game = gameInstance;
	var towerGraphics = self.attachAsset('tower', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.cooldown = 0.625 / 0.7 * (1 / 0.6) * 1.3;
	self.cooldownTimer = 0;
	self.shoot = function (enemies, bullets) {
		if (self.cooldownTimer <= 0 && enemies.length > 0) {
			self.fireBullet(bullets);
		}
		self.cooldownTimer--;
	};
	self.fireBullet = function (bullets) {
		var bullet = new Bullet(self.game);
		bullet.x = self.x;
		bullet.y = self.y;
		gameInstance.bulletsContainer.addChild(bullet);
		gameInstance.bullets.push(bullet);
		self.cooldownTimer = self.cooldown;
	};
});

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

/**** 
* Game Code
****/ 
game.spawnEnemies = function () {
	enemiesSpawnedLastRound += 6;
	for (var i = 0; i < enemiesSpawnedLastRound; i++) {
		var newEnemy = new Enemy();
		newEnemy.x = Math.random() * 2048;
		newEnemy.y = -50 * (i + 1);
		game.enemies.push(newEnemy);
		game.addChild(newEnemy);
	}
	if (game.lastEnemyCount !== game.enemies.length) {
		game.enemyCounterTxt.setText('Enemies: ' + game.enemies.length.toString());
		game.lastEnemyCount = game.enemies.length;
	}
};
game.updateEnemyCounter = function () {};
game.score = 0;
game.gold = 100;
game.incrementScore = function () {
	this.score++;
};
game.frameRateCounter = new FrameRateCounter();
LK.gui.topRight.addChild(game.frameRateCounter.display);
var enemiesSpawnedLastRound = 1;
game.scoreTxt = new Text2(game.score.toString(), {
	size: 150,
	fill: 0xFFFFFF
});
game.scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(game.scoreTxt);
game.goldTxt = new Text2(game.gold.toString(), {
	size: 150,
	fill: 0xFFFF00
});
game.goldTxt.anchor.set(0, 0);
LK.gui.topLeft.addChild(game.goldTxt);
game.enemies = [];
// Removed duplicate initialization of game.enemies to prevent memory leaks and unnecessary allocations
game.enemyCounterTxt = new Text2('Enemies: ' + game.enemies.length.toString(), {
	size: 150,
	fill: 0xFF0000
});
game.lastGold = game.gold;
game.lastScore = game.score;
game.lastEnemyCount = game.enemies.length;
game.enemyCounterTxt.anchor.set(0, 1);
LK.gui.bottomLeft.addChild(game.enemyCounterTxt);
game.setBackgroundColor(0xFFFFFF);
var towers = [];
game.bullets = [];
game.bulletsContainer = game.addChild(new Container());
var initialTower = new Tower(game);
initialTower.x = 0 + initialTower.width / 2 - 260;
initialTower.y = 500 + initialTower.height / 2 + 300 + 800 + 500;
towers.push(initialTower);
game.addChild(initialTower);
var plain = game.addChild(new Plain());
plain.x = 2048 / 2;
plain.y = 2732 / 2;
game.addChild(plain);
var enemy = new Enemy();
enemy.x = 2048 / 2;
enemy.y = -enemy.height / 2;
game.enemies.push(enemy);
game.addChild(enemy);
game.on('down', function (x, y, obj) {
	var event = obj;
	var pos = game.toLocal(event.global);
	if (game.gold >= 50) {
		var newTower = new Tower(game);
		newTower.x = pos.x;
		newTower.y = pos.y;
		game.addChild(newTower);
		towers.push(newTower);
		game.gold -= 50;
		if (game.lastGold !== game.gold) {
			game.goldTxt.setText(game.gold.toString());
			game.lastGold = game.gold;
		}
	}
});
LK.on('tick', function () {
	game.frameRateCounter._update_migrated();
	if (game.enemies.length === 0) {
		game.spawnEnemies();
	} else {
		towers.forEach(function (tower) {
			tower.shoot(game.enemies, game.bullets);
		});
	}
	// Combined update loop for both enemies and bullets to minimize per-frame iteration and batch remove destroyed objects
	var enemiesToRemove = [];
	var bulletsToRemove = [];
	// Update enemies and mark for removal if out of bounds
	for (var ei = 0; ei < game.enemies.length; ei++) {
		var enemy = game.enemies[ei];
		enemy._move_migrated();
		if (enemy.y > 2732) {
			enemy.destroy();
			enemiesToRemove.push(ei);
		}
	}
	// Update bullets, check for collisions, and mark for removal if destroyed or out of bounds
	for (var bi = 0; bi < game.bullets.length; bi++) {
		var bullet = game.bullets[bi];
		bullet._move_migrated();
		var destroyed = false;
		for (var j = game.enemies.length - 1; j >= 0; j--) {
			if (bullet.intersects(game.enemies[j])) {
				game.enemies[j].destroy();
				game.enemies.splice(j, 1);
				enemiesToRemove = []; // Reset, as indices have changed
				game.incrementScore();
				if (game.lastScore !== game.score) {
					game.scoreTxt.setText(game.score.toString());
					game.lastScore = game.score;
				}
				game.gold += 50;
				bullet.destroy();
				if (game.lastEnemyCount !== game.enemies.length) {
					game.enemyCounterTxt.setText('Enemies: ' + game.enemies.length.toString());
					game.lastEnemyCount = game.enemies.length;
				}
				destroyed = true;
				break;
			}
		}
		if (destroyed || bullet.x > 2048) {
			bullet.destroy();
			bulletsToRemove.push(bi);
		}
	}
	// Remove destroyed enemies in reverse order to avoid index shifting
	for (var i = enemiesToRemove.length - 1; i >= 0; i--) {
		game.enemies.splice(enemiesToRemove[i], 1);
	}
	// Remove destroyed bullets in reverse order to avoid index shifting
	for (var i = bulletsToRemove.length - 1; i >= 0; i--) {
		game.bullets.splice(bulletsToRemove[i], 1);
	}
});

===================================================================
--- original.js
+++ change.js
@@ -118,10 +118,11 @@
 		newEnemy.y = -50 * (i + 1);
 		game.enemies.push(newEnemy);
 		game.addChild(newEnemy);
 	}
-	if (game.enemyCounterTxt.text !== 'Enemies: ' + game.enemies.length.toString()) {
+	if (game.lastEnemyCount !== game.enemies.length) {
 		game.enemyCounterTxt.setText('Enemies: ' + game.enemies.length.toString());
+		game.lastEnemyCount = game.enemies.length;
 	}
 };
 game.updateEnemyCounter = function () {};
 game.score = 0;
@@ -149,8 +150,11 @@
 game.enemyCounterTxt = new Text2('Enemies: ' + game.enemies.length.toString(), {
 	size: 150,
 	fill: 0xFF0000
 });
+game.lastGold = game.gold;
+game.lastScore = game.score;
+game.lastEnemyCount = game.enemies.length;
 game.enemyCounterTxt.anchor.set(0, 1);
 LK.gui.bottomLeft.addChild(game.enemyCounterTxt);
 game.setBackgroundColor(0xFFFFFF);
 var towers = [];
@@ -179,10 +183,11 @@
 		newTower.y = pos.y;
 		game.addChild(newTower);
 		towers.push(newTower);
 		game.gold -= 50;
-		if (game.goldTxt.text !== game.gold.toString()) {
+		if (game.lastGold !== game.gold) {
 			game.goldTxt.setText(game.gold.toString());
+			game.lastGold = game.gold;
 		}
 	}
 });
 LK.on('tick', function () {
@@ -193,47 +198,54 @@
 		towers.forEach(function (tower) {
 			tower.shoot(game.enemies, game.bullets);
 		});
 	}
-	// Optimized enemy update: remove destroyed enemies in a single pass after processing
+	// Combined update loop for both enemies and bullets to minimize per-frame iteration and batch remove destroyed objects
 	var enemiesToRemove = [];
-	game.enemies.forEach(function (enemy, index) {
+	var bulletsToRemove = [];
+	// Update enemies and mark for removal if out of bounds
+	for (var ei = 0; ei < game.enemies.length; ei++) {
+		var enemy = game.enemies[ei];
 		enemy._move_migrated();
 		if (enemy.y > 2732) {
 			enemy.destroy();
-			enemiesToRemove.push(index);
+			enemiesToRemove.push(ei);
 		}
-	});
-	for (var i = enemiesToRemove.length - 1; i >= 0; i--) {
-		game.enemies.splice(enemiesToRemove[i], 1);
 	}
-	// Optimized bullet update: remove destroyed bullets in a single pass after processing
-	var bulletsToRemove = [];
-	game.bullets.forEach(function (bullet, index) {
+	// Update bullets, check for collisions, and mark for removal if destroyed or out of bounds
+	for (var bi = 0; bi < game.bullets.length; bi++) {
+		var bullet = game.bullets[bi];
 		bullet._move_migrated();
 		var destroyed = false;
 		for (var j = game.enemies.length - 1; j >= 0; j--) {
 			if (bullet.intersects(game.enemies[j])) {
 				game.enemies[j].destroy();
 				game.enemies.splice(j, 1);
+				enemiesToRemove = []; // Reset, as indices have changed
 				game.incrementScore();
-				if (game.scoreTxt.text !== game.score.toString()) {
+				if (game.lastScore !== game.score) {
 					game.scoreTxt.setText(game.score.toString());
+					game.lastScore = game.score;
 				}
 				game.gold += 50;
 				bullet.destroy();
-				if (game.enemyCounterTxt.text !== 'Enemies: ' + game.enemies.length.toString()) {
+				if (game.lastEnemyCount !== game.enemies.length) {
 					game.enemyCounterTxt.setText('Enemies: ' + game.enemies.length.toString());
+					game.lastEnemyCount = game.enemies.length;
 				}
 				destroyed = true;
 				break;
 			}
 		}
 		if (destroyed || bullet.x > 2048) {
 			bullet.destroy();
-			bulletsToRemove.push(index);
+			bulletsToRemove.push(bi);
 		}
-	});
+	}
+	// Remove destroyed enemies in reverse order to avoid index shifting
+	for (var i = enemiesToRemove.length - 1; i >= 0; i--) {
+		game.enemies.splice(enemiesToRemove[i], 1);
+	}
 	// Remove destroyed bullets in reverse order to avoid index shifting
 	for (var i = bulletsToRemove.length - 1; i >= 0; i--) {
 		game.bullets.splice(bulletsToRemove[i], 1);
 	}