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

/**** 
* Classes
****/ 
var BossShip = Container.expand(function () {
	var self = Container.call(this);
	var bossGraphics = self.attachAsset('bossShip', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 20;
	self.maxHealth = 20;
	self.speed = 2;
	self.shootCooldown = 0;
	self.shootRate = 30;
	self.moveDirection = 1;
	self.moveTimer = 0;
	self.moveInterval = 120;
	self.bossNumber = 1;
	self.update = function () {
		self.moveTimer++;
		if (self.moveTimer > self.moveInterval) {
			self.moveDirection *= -1;
			self.moveTimer = 0;
		}
		self.y += self.speed;
		self.y = Math.max(100, Math.min(2632, self.y));
		self.x += self.moveDirection * 3;
		self.x = Math.max(50, Math.min(1998, self.x));
		self.shootCooldown--;
	};
	return self;
});
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('enemyBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8;
	self.damage = 1;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var EnemyShip = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemyShip', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 1;
	self.maxHealth = 1;
	self.speed = 3;
	self.shootCooldown = 0;
	self.shootRate = 60;
	self.waveNumber = 1;
	self.update = function () {
		self.y += self.speed;
		self.shootCooldown--;
	};
	return self;
});
var PlayerBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('playerBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -15;
	self.damage = 1;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var PlayerShip = Container.expand(function () {
	var self = Container.call(this);
	var shipGraphics = self.attachAsset('playerShip', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 10;
	self.maxHealth = 10;
	self.speed = 6;
	self.shootCooldown = 0;
	self.shootRate = 15;
	self.firepower = 1;
	self.armor = 1;
	self.upgradePoints = 0;
	self.down = function (x, y, obj) {
		//Placeholder for future touch interactions
	};
	self.up = function (x, y, obj) {
		//Placeholder for future touch interactions
	};
	self.move = function (x, y, obj) {
		//Handled by game.move
	};
	self.update = function () {
		self.shootCooldown--;
	};
	return self;
});
var UpgradePickup = Container.expand(function () {
	var self = Container.call(this);
	var pickupGraphics = self.attachAsset('upgradePickup', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.upgradeType = 'firepower';
	self.floatSpeed = 2;
	self.floatDirection = -1;
	self.originalY = 0;
	self.update = function () {
		self.y += self.floatSpeed * self.floatDirection;
		if (self.y < self.originalY - 40 || self.y > self.originalY + 40) {
			self.floatDirection *= -1;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x001a4d
});

/**** 
* Game Code
****/ 
//Game state variables
var playerShip = null;
var enemyBullets = [];
var playerBullets = [];
var enemies = [];
var bosses = [];
var upgradePickups = [];
var waveNumber = 1;
var bossNumber = 1;
var waveEnemyCount = 0;
var waveEnemiesDefeated = 0;
var isBossWave = false;
var gameState = 'playing';
var moveDirection = 0;
var touchX = 1024;
//UI Elements
var healthText = new Text2('Health: 10/10', {
	size: 80,
	fill: '#ffffff'
});
healthText.anchor.set(0, 0);
LK.gui.topRight.addChild(healthText);
var upgradeText = new Text2('Upgrades: 0', {
	size: 80,
	fill: '#ffff00'
});
upgradeText.anchor.set(0, 0);
LK.gui.top.addChild(upgradeText);
var waveText = new Text2('Wave: 1', {
	size: 80,
	fill: '#00ff00'
});
waveText.anchor.set(1, 0);
LK.gui.topRight.addChild(waveText);
var pauseMenuBg = LK.getAsset('starfield', {
	width: 1024,
	height: 800,
	color: 0x000000,
	shape: 'box'
});
pauseMenuBg.alpha = 0.9;
pauseMenuBg.visible = false;
LK.gui.center.addChild(pauseMenuBg);
var pauseTitle = new Text2('PAUSED', {
	size: 150,
	fill: '#ffff00'
});
pauseTitle.anchor.set(0.5, 0.5);
pauseTitle.visible = false;
LK.gui.center.addChild(pauseTitle);
var pauseInfo = new Text2('Tap to Resume', {
	size: 100,
	fill: '#ffffff'
});
pauseInfo.anchor.set(0.5, 0.5);
pauseInfo.visible = false;
LK.gui.center.addChild(pauseInfo);
//Add starfield background
var starfield = game.addChild(LK.getAsset('starfield', {
	anchorX: 0,
	anchorY: 0
}));
starfield.x = 0;
starfield.y = 0;
//Add stars to background
for (var s = 0; s < 100; s++) {
	var star = game.addChild(LK.getAsset('starfield', {
		width: 2,
		height: 2,
		color: 0xffffff,
		shape: 'ellipse'
	}));
	star.x = Math.random() * 2048;
	star.y = Math.random() * 2732;
}
//Initialize player ship
playerShip = game.addChild(new PlayerShip());
playerShip.x = 1024;
playerShip.y = 2400;
//Start music
LK.playMusic('spaceMusic', {
	loop: true
});
//Function to calculate enemy wave count
function calculateWaveSize() {
	return 8 + Math.floor(waveNumber / 2);
}
//Function to spawn enemy wave
function spawnEnemyWave() {
	waveEnemyCount = calculateWaveSize();
	waveEnemiesDefeated = 0;
	isBossWave = false;
	for (var i = 0; i < waveEnemyCount; i++) {
		var enemy = game.addChild(new EnemyShip());
		enemy.x = 200 + i % 3 * 400;
		enemy.y = -100 - Math.floor(i / 3) * 150;
		enemy.speed = 2 + waveNumber * 0.3;
		enemy.shootRate = Math.max(60, 90 - waveNumber * 5);
		enemy.waveNumber = waveNumber;
		enemy.lastBulletIntersecting = false;
		enemies.push(enemy);
	}
}
//Function to spawn boss wave
function spawnBoss() {
	isBossWave = true;
	waveEnemiesDefeated = 0;
	var boss = game.addChild(new BossShip());
	boss.x = 1024;
	boss.y = -100;
	boss.health = 10 + bossNumber * 3;
	boss.maxHealth = boss.health;
	boss.shootRate = Math.max(35, 60 - bossNumber * 3);
	boss.bossNumber = bossNumber;
	boss.lastBulletIntersecting = false;
	bosses.push(boss);
}
//Initialize first wave
spawnEnemyWave();
//Handle game movement
game.move = function (x, y, obj) {
	touchX = x;
	playerShip.x = Math.max(30, Math.min(2018, x));
};
//Main game update loop
game.update = function () {
	if (gameState !== 'playing') return;
	//Update player ship
	playerShip.update();
	playerShip.shootCooldown--;
	//Player shooting
	if (playerShip.shootCooldown <= 0) {
		for (var i = 0; i < playerShip.firepower; i++) {
			var offset = (playerShip.firepower - 1) * -15 + i * 30;
			var bullet = game.addChild(new PlayerBullet());
			bullet.x = playerShip.x + offset;
			bullet.y = playerShip.y - 40;
			bullet.damage = playerShip.firepower;
			playerBullets.push(bullet);
			LK.getSound('playerShoot').play();
		}
		playerShip.shootCooldown = playerShip.shootRate;
	}
	//Update player bullets
	for (var i = playerBullets.length - 1; i >= 0; i--) {
		var bullet = playerBullets[i];
		bullet.update();
		if (bullet.y < -50) {
			bullet.destroy();
			playerBullets.splice(i, 1);
			continue;
		}
	}
	//Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		var enemy = enemies[i];
		if (!enemy) continue;
		enemy.update();
		//Enemy shooting
		enemy.shootCooldown--;
		if (enemy.shootCooldown <= 0) {
			var eBullet = game.addChild(new EnemyBullet());
			eBullet.x = enemy.x;
			eBullet.y = enemy.y + 30;
			enemyBullets.push(eBullet);
			LK.getSound('enemyShoot').play();
			enemy.shootCooldown = enemy.shootRate;
		}
		//Check enemy off-screen
		if (enemy.y > 2800) {
			enemy.destroy();
			enemies.splice(i, 1);
			continue;
		}
		//Check bullet collisions with enemies
		for (var j = playerBullets.length - 1; j >= 0; j--) {
			var bullet = playerBullets[j];
			if (bullet && enemy && bullet.intersects(enemy) && !enemy.lastBulletIntersecting) {
				enemy.health -= bullet.damage;
				enemy.lastBulletIntersecting = true;
				bullet.destroy();
				playerBullets.splice(j, 1);
				if (enemy.health <= 0) {
					LK.getSound('explosion').play();
					LK.effects.flashObject(enemy, 0xff0000, 200);
					LK.setScore(LK.getScore() + 100);
					waveEnemiesDefeated++;
					//Drop upgrade pickup chance
					if (Math.random() < 0.3) {
						var pickup = game.addChild(new UpgradePickup());
						pickup.x = enemy.x;
						pickup.y = enemy.y;
						pickup.originalY = enemy.y;
						pickup.upgradeType = ['firepower', 'armor', 'speed'][Math.floor(Math.random() * 3)];
						upgradePickups.push(pickup);
					}
					enemy.destroy();
					enemies.splice(i, 1);
				}
				break;
			}
		}
	}
	//Update bosses
	for (var i = bosses.length - 1; i >= 0; i--) {
		var boss = bosses[i];
		if (!boss) continue;
		boss.update();
		//Boss shooting (multiple bullets)
		boss.shootCooldown--;
		if (boss.shootCooldown <= 0) {
			for (var b = 0; b < 2; b++) {
				var eBullet = game.addChild(new EnemyBullet());
				eBullet.x = boss.x + (b - 1) * 30;
				eBullet.y = boss.y + 60;
				enemyBullets.push(eBullet);
			}
			LK.getSound('enemyShoot').play();
			boss.shootCooldown = boss.shootRate;
		}
		//Check bullet collisions with boss
		for (var j = playerBullets.length - 1; j >= 0; j--) {
			var bullet = playerBullets[j];
			if (bullet && boss && bullet.intersects(boss) && !boss.lastBulletIntersecting) {
				boss.health -= bullet.damage;
				boss.lastBulletIntersecting = true;
				bullet.destroy();
				playerBullets.splice(j, 1);
				LK.effects.flashObject(boss, 0xff00ff, 150);
				if (boss.health <= 0) {
					LK.getSound('explosion').play();
					LK.effects.flashScreen(0xffff00, 500);
					LK.setScore(LK.getScore() + 1000);
					//Grant boss defeat upgrade
					playerShip.upgradePoints += 3;
					playerShip.firepower += 1;
					playerShip.armor += 1;
					boss.destroy();
					bosses.splice(i, 1);
					bossNumber++;
					waveNumber++;
					//Spawn next wave after delay
					LK.setTimeout(function () {
						spawnEnemyWave();
					}, 1000);
				}
				break;
			}
		}
	}
	//Update enemy bullets
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		var bullet = enemyBullets[i];
		bullet.update();
		if (bullet.y > 2800) {
			bullet.destroy();
			enemyBullets.splice(i, 1);
			continue;
		}
		//Check collision with player
		if (bullet.intersects(playerShip) && !bullet.lastPlayerIntersecting) {
			bullet.lastPlayerIntersecting = true;
			playerShip.health -= Math.max(1, bullet.damage - (playerShip.armor - 1));
			bullet.destroy();
			enemyBullets.splice(i, 1);
			LK.effects.flashObject(playerShip, 0xff0000, 200);
			if (playerShip.health <= 0) {
				gameState = 'gameover';
				LK.showGameOver();
			}
			continue;
		}
	}
	//Update upgrade pickups
	for (var i = upgradePickups.length - 1; i >= 0; i--) {
		var pickup = upgradePickups[i];
		pickup.update();
		//Check collision with player
		if (pickup.intersects(playerShip) && !pickup.lastPlayerIntersecting) {
			pickup.lastPlayerIntersecting = true;
			LK.getSound('upgrade').play();
			if (pickup.upgradeType === 'firepower') {
				playerShip.firepower++;
			} else if (pickup.upgradeType === 'armor') {
				playerShip.armor++;
				playerShip.health = playerShip.maxHealth;
			} else if (pickup.upgradeType === 'speed') {
				playerShip.shootRate = Math.max(5, playerShip.shootRate - 2);
			}
			playerShip.upgradePoints++;
			LK.effects.flashObject(playerShip, 0x00ff00, 300);
			pickup.destroy();
			upgradePickups.splice(i, 1);
			continue;
		}
		//Remove off-screen pickups
		if (pickup.y > 2800) {
			pickup.destroy();
			upgradePickups.splice(i, 1);
		}
	}
	//Check if wave is complete and spawn boss
	if (enemies.length === 0 && !isBossWave && bosses.length === 0 && waveEnemiesDefeated === waveEnemyCount && waveEnemyCount > 0) {
		waveEnemyCount = 0;
		LK.setTimeout(function () {
			if (enemies.length === 0 && bosses.length === 0) {
				spawnBoss();
			}
		}, 1500);
	}
	//Update UI
	healthText.setText('Health: ' + Math.max(0, playerShip.health) + '/' + playerShip.maxHealth);
	upgradeText.setText('Upgrades: ' + playerShip.upgradePoints);
	waveText.setText('Wave: ' + waveNumber + ' | Boss: ' + bossNumber);
};

===================================================================
--- original.js
+++ change.js
@@ -170,8 +170,49 @@
 	fill: '#00ff00'
 });
 waveText.anchor.set(1, 0);
 LK.gui.topRight.addChild(waveText);
+var pauseMenuBg = LK.getAsset('starfield', {
+	width: 1024,
+	height: 800,
+	color: 0x000000,
+	shape: 'box'
+});
+pauseMenuBg.alpha = 0.9;
+pauseMenuBg.visible = false;
+LK.gui.center.addChild(pauseMenuBg);
+var pauseTitle = new Text2('PAUSED', {
+	size: 150,
+	fill: '#ffff00'
+});
+pauseTitle.anchor.set(0.5, 0.5);
+pauseTitle.visible = false;
+LK.gui.center.addChild(pauseTitle);
+var pauseInfo = new Text2('Tap to Resume', {
+	size: 100,
+	fill: '#ffffff'
+});
+pauseInfo.anchor.set(0.5, 0.5);
+pauseInfo.visible = false;
+LK.gui.center.addChild(pauseInfo);
+//Add starfield background
+var starfield = game.addChild(LK.getAsset('starfield', {
+	anchorX: 0,
+	anchorY: 0
+}));
+starfield.x = 0;
+starfield.y = 0;
+//Add stars to background
+for (var s = 0; s < 100; s++) {
+	var star = game.addChild(LK.getAsset('starfield', {
+		width: 2,
+		height: 2,
+		color: 0xffffff,
+		shape: 'ellipse'
+	}));
+	star.x = Math.random() * 2048;
+	star.y = Math.random() * 2732;
+}
 //Initialize player ship
 playerShip = game.addChild(new PlayerShip());
 playerShip.x = 1024;
 playerShip.y = 2400;
@@ -180,9 +221,9 @@
 	loop: true
 });
 //Function to calculate enemy wave count
 function calculateWaveSize() {
-	return 3 + Math.floor(waveNumber / 2);
+	return 8 + Math.floor(waveNumber / 2);
 }
 //Function to spawn enemy wave
 function spawnEnemyWave() {
 	waveEnemyCount = calculateWaveSize();
@@ -205,9 +246,9 @@
 	waveEnemiesDefeated = 0;
 	var boss = game.addChild(new BossShip());
 	boss.x = 1024;
 	boss.y = -100;
-	boss.health = 15 + bossNumber * 5;
+	boss.health = 10 + bossNumber * 3;
 	boss.maxHealth = boss.health;
 	boss.shootRate = Math.max(35, 60 - bossNumber * 3);
 	boss.bossNumber = bossNumber;
 	boss.lastBulletIntersecting = false;