/**** 
* 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.y += self.speed;
		self.moveTimer++;
		if (self.moveTimer > self.moveInterval) {
			self.moveDirection *= -1;
			self.moveTimer = 0;
		}
		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);
//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 3 + 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(40, 60 - 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 = 15 + bossNumber * 5;
	boss.maxHealth = boss.health;
	boss.shootRate = Math.max(20, 40 - 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
		if (!enemy.lastBulletIntersecting) enemy.lastBulletIntersecting = false;
		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 < 3; 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
		if (!boss.lastBulletIntersecting) boss.lastBulletIntersecting = false;
		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++;
					//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.lastPlayerIntersecting) bullet.lastPlayerIntersecting = false;
		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.lastPlayerIntersecting) pickup.lastPlayerIntersecting = false;
		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) {
		LK.setTimeout(function () {
			if (enemies.length === 0 && bosses.length === 0) {
				waveNumber++;
				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
@@ -193,8 +193,9 @@
 		enemy.y = -100 - Math.floor(i / 3) * 150;
 		enemy.speed = 2 + waveNumber * 0.3;
 		enemy.shootRate = Math.max(40, 60 - waveNumber * 5);
 		enemy.waveNumber = waveNumber;
+		enemy.lastBulletIntersecting = false;
 		enemies.push(enemy);
 	}
 }
 //Function to spawn boss wave
@@ -207,8 +208,9 @@
 	boss.health = 15 + bossNumber * 5;
 	boss.maxHealth = boss.health;
 	boss.shootRate = Math.max(20, 40 - bossNumber * 3);
 	boss.bossNumber = bossNumber;
+	boss.lastBulletIntersecting = false;
 	bosses.push(boss);
 }
 //Initialize first wave
 spawnEnemyWave();
@@ -267,12 +269,14 @@
 			enemies.splice(i, 1);
 			continue;
 		}
 		//Check bullet collisions with enemies
+		if (!enemy.lastBulletIntersecting) enemy.lastBulletIntersecting = false;
 		for (var j = playerBullets.length - 1; j >= 0; j--) {
 			var bullet = playerBullets[j];
-			if (bullet && enemy && bullet.intersects(enemy)) {
+			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();
@@ -312,12 +316,14 @@
 			LK.getSound('enemyShoot').play();
 			boss.shootCooldown = boss.shootRate;
 		}
 		//Check bullet collisions with boss
+		if (!boss.lastBulletIntersecting) boss.lastBulletIntersecting = false;
 		for (var j = playerBullets.length - 1; j >= 0; j--) {
 			var bullet = playerBullets[j];
-			if (bullet && boss && bullet.intersects(boss)) {
+			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) {
@@ -349,9 +355,11 @@
 			enemyBullets.splice(i, 1);
 			continue;
 		}
 		//Check collision with player
-		if (bullet.intersects(playerShip)) {
+		if (!bullet.lastPlayerIntersecting) bullet.lastPlayerIntersecting = false;
+		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);
@@ -366,9 +374,11 @@
 	for (var i = upgradePickups.length - 1; i >= 0; i--) {
 		var pickup = upgradePickups[i];
 		pickup.update();
 		//Check collision with player
-		if (pickup.intersects(playerShip)) {
+		if (!pickup.lastPlayerIntersecting) pickup.lastPlayerIntersecting = false;
+		if (pickup.intersects(playerShip) && !pickup.lastPlayerIntersecting) {
+			pickup.lastPlayerIntersecting = true;
 			LK.getSound('upgrade').play();
 			if (pickup.upgradeType === 'firepower') {
 				playerShip.firepower++;
 			} else if (pickup.upgradeType === 'armor') {
@@ -389,11 +399,12 @@
 			upgradePickups.splice(i, 1);
 		}
 	}
 	//Check if wave is complete and spawn boss
-	if (enemies.length === 0 && !isBossWave && bosses.length === 0 && waveEnemiesDefeated > 0) {
+	if (enemies.length === 0 && !isBossWave && bosses.length === 0 && waveEnemiesDefeated === waveEnemyCount && waveEnemyCount > 0) {
 		LK.setTimeout(function () {
-			if (enemies.length === 0) {
+			if (enemies.length === 0 && bosses.length === 0) {
+				waveNumber++;
 				spawnBoss();
 			}
 		}, 1500);
 	}