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

/**** 
* Classes
****/ 
var Boss = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('enemyJet', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2.5,
		scaleY: 2.5
	});
	self.maxHealth = 10;
	self.health = 10;
	self.speed = 1;
	self.fireRate = 90;
	self.fireTimer = 0;
	self.missileRate = 180;
	self.missileTimer = 0;
	self.rocketRate = 150;
	self.rocketTimer = 0;
	self.horizontalSpeed = 1;
	self.horizontalDirection = 1;
	self.weaponSystems = {
		bullets: 1,
		missiles: 0,
		rockets: 0
	};
	self.bossType = 1; // 1 for wave 10, 2 for wave 20
	self.update = function () {
		self.y += self.speed;
		// Horizontal movement
		self.x += self.horizontalSpeed * self.horizontalDirection;
		if (self.x < 200 || self.x > 1848) {
			self.horizontalDirection *= -1;
		}
		// Update timers
		if (self.fireTimer > 0) {
			self.fireTimer--;
		}
		if (self.missileTimer > 0) {
			self.missileTimer--;
		}
		if (self.rocketTimer > 0) {
			self.rocketTimer--;
		}
		// Fire bullets
		if (self.fireTimer <= 0 && self.y > 0 && self.y < 2400) {
			for (var i = 0; i < self.weaponSystems.bullets; i++) {
				self.fireBullet(i);
			}
			self.fireTimer = self.fireRate;
		}
		// Fire missiles
		if (self.weaponSystems.missiles > 0 && self.missileTimer <= 0 && self.y > 0 && self.y < 2400) {
			for (var i = 0; i < self.weaponSystems.missiles; i++) {
				self.fireMissile(i);
			}
			self.missileTimer = self.missileRate;
		}
		// Fire rockets
		if (self.weaponSystems.rockets > 0 && self.rocketTimer <= 0 && self.y > 0 && self.y < 2400) {
			for (var i = 0; i < self.weaponSystems.rockets; i++) {
				self.fireRocket(i);
			}
			self.rocketTimer = self.rocketRate;
		}
	};
	self.fireBullet = function (index) {
		var bullet = new EnemyBullet();
		var offset = (index - (self.weaponSystems.bullets - 1) / 2) * 40;
		bullet.x = self.x + offset;
		bullet.y = self.y + 75;
		enemyBullets.push(bullet);
		game.addChild(bullet);
	};
	self.fireMissile = function (index) {
		var missile = new Missile();
		var offset = (index - (self.weaponSystems.missiles - 1) / 2) * 60;
		missile.x = self.x + offset;
		missile.y = self.y + 75;
		// Mark as boss missile for enhanced tracking
		missile.isBossMissile = true;
		missile.trackingSpeed = 1.2; // Faster tracking for boss missiles
		missile.damage = 3; // More damage from boss missiles
		// Add visual effect to indicate guided missile
		tween(missile, {
			scaleX: 1.3,
			scaleY: 1.3
		}, {
			duration: 200
		});
		missiles.push(missile);
		game.addChild(missile);
		LK.getSound('missile').play();
	};
	self.fireRocket = function (index) {
		var missile = new Missile();
		var offset = (index - (self.weaponSystems.rockets - 1) / 2) * 80;
		missile.x = self.x + offset;
		missile.y = self.y + 75;
		// Mark wave 20 boss rockets as guided missiles
		missile.isBossMissile = true;
		missile.trackingSpeed = 1.5; // Even faster tracking for wave 20 boss
		missile.damage = 4; // High damage from wave 20 boss
		// Visual enhancement for wave 20 boss missiles
		tween(missile, {
			scaleX: 1.5,
			scaleY: 1.5,
			tint: 0xFF0000
		}, {
			duration: 300
		});
		missiles.push(missile);
		game.addChild(missile);
		LK.getSound('missile').play();
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		// Flash effect when taking damage
		LK.effects.flashObject(self, 0xFF0000, 200);
		if (self.health <= 0) {
			// Create multiple explosions for boss death - reduced for performance
			for (var i = 0; i < 3; i++) {
				var explosion = LK.getAsset('explosion', {
					anchorX: 0.5,
					anchorY: 0.5,
					x: self.x + (Math.random() - 0.5) * 150,
					y: self.y + (Math.random() - 0.5) * 150
				});
				game.addChild(explosion);
				tween(explosion, {
					alpha: 0
				}, {
					duration: 600,
					delay: i * 100,
					onFinish: function onFinish() {
						explosion.destroy();
					}
				});
			}
			self.destroy();
			LK.getSound('explosion').play();
			return true;
		}
		return false;
	};
	return self;
});
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('enemyBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 6;
	self.damage = 1;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var EnemyJet = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('enemyJet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 1;
	self.speed = 2;
	self.fireRate = 120;
	self.fireTimer = Math.random() * 60;
	self.canFireMissiles = false;
	self.missileRate = 300;
	self.missileTimer = Math.random() * 150;
	self.horizontalSpeed = (Math.random() - 0.5) * 3;
	self.horizontalDirection = Math.random() > 0.5 ? 1 : -1;
	self.update = function () {
		self.y += self.speed;
		// Add horizontal movement
		self.x += self.horizontalSpeed * self.horizontalDirection;
		// Bounce off screen edges
		if (self.x < 100 || self.x > 1948) {
			self.horizontalDirection *= -1;
		}
		if (self.fireTimer > 0) {
			self.fireTimer--;
		}
		if (self.missileTimer > 0) {
			self.missileTimer--;
		}
		// Fire bullets
		if (self.fireTimer <= 0 && self.y > 0 && self.y < 2400) {
			self.fireBullet();
			self.fireTimer = self.fireRate + Math.random() * 60;
		}
		// Fire missiles (if capable)
		if (self.canFireMissiles && self.missileTimer <= 0 && self.y > 0 && self.y < 2400) {
			self.fireMissile();
			self.missileTimer = self.missileRate + Math.random() * 120;
		}
	};
	self.fireBullet = function () {
		var bullet = new EnemyBullet();
		bullet.x = self.x;
		bullet.y = self.y + 50;
		enemyBullets.push(bullet);
		game.addChild(bullet);
	};
	self.fireMissile = function () {
		var missile = new Missile();
		missile.x = self.x;
		missile.y = self.y + 50;
		missiles.push(missile);
		game.addChild(missile);
		LK.getSound('missile').play();
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			// Create explosion effect
			var explosion = LK.getAsset('explosion', {
				anchorX: 0.5,
				anchorY: 0.5,
				x: self.x,
				y: self.y
			});
			game.addChild(explosion);
			// Enhanced explosion animation
			explosion.scaleX = 0.1;
			explosion.scaleY = 0.1;
			tween(explosion, {
				scaleX: 1.5,
				scaleY: 1.5,
				alpha: 0
			}, {
				duration: 600,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					explosion.destroy();
				}
			});
			// Create sparkle particles - limit to prevent performance issues
			if (particles.length < 50) {
				for (var p = 0; p < 4; p++) {
					var sparkle = new Particle();
					sparkle.attachAsset('sparkle', {
						anchorX: 0.5,
						anchorY: 0.5
					});
					sparkle.x = self.x + (Math.random() - 0.5) * 100;
					sparkle.y = self.y + (Math.random() - 0.5) * 100;
					sparkle.velocityX = (Math.random() - 0.5) * 8;
					sparkle.velocityY = (Math.random() - 0.5) * 8;
					sparkle.life = 20;
					sparkle.maxLife = 20;
					particles.push(sparkle);
					game.addChild(sparkle);
				}
			}
			self.destroy();
			LK.getSound('explosion').play();
			return true;
		}
		return false;
	};
	return self;
});
var GuidedMissile = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('guidedMissile', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8;
	self.damage = 3;
	self.trackingSpeed = 2.0;
	self.upgradeLevel = 1;
	self.baseSpeed = 8;
	self.rotation = 0;
	self.update = function () {
		// Enhanced guided missile behavior
		if (enemies.length > 0) {
			// Find nearest enemy
			var nearestEnemy = null;
			var nearestDistance = Infinity;
			for (var i = 0; i < enemies.length; i++) {
				var enemy = enemies[i];
				var dx = enemy.x - self.x;
				var dy = enemy.y - self.y;
				var distance = Math.sqrt(dx * dx + dy * dy);
				if (distance < nearestDistance) {
					nearestDistance = distance;
					nearestEnemy = enemy;
				}
			}
			// Track nearest enemy
			if (nearestEnemy) {
				var dx = nearestEnemy.x - self.x;
				var dy = nearestEnemy.y - self.y;
				var distance = Math.sqrt(dx * dx + dy * dy);
				if (distance > 0) {
					// Calculate angle to target
					var angle = Math.atan2(dy, dx);
					// Apply guided movement with upgrade-based speed
					var currentTrackingSpeed = self.trackingSpeed * self.upgradeLevel;
					self.x += Math.cos(angle) * currentTrackingSpeed;
					self.y += Math.sin(angle) * currentTrackingSpeed;
					// Rotate missile to face direction of movement
					self.rotation = angle + Math.PI / 2;
				}
			}
		}
		// Base forward movement with upgrade-based speed
		var forwardSpeed = self.speed + (self.upgradeLevel - 1) * 2;
		self.y -= forwardSpeed;
	};
	return self;
});
var KamikazeJet = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('enemyJet', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.2,
		scaleY: 1.2
	});
	graphics.tint = 0xFF4444; // Red tint to distinguish kamikaze planes
	self.health = 1;
	self.speed = 4;
	self.trackingSpeed = 1.5;
	self.isKamikaze = true;
	self.update = function () {
		// Kamikaze behavior - chase the player
		if (player) {
			var dx = player.x - self.x;
			var dy = player.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance > 0) {
				// Calculate normalized direction to player
				var dirX = dx / distance;
				var dirY = dy / distance;
				// Move towards player
				self.x += dirX * self.trackingSpeed;
				self.y += dirY * self.trackingSpeed;
				// Rotate to face direction of movement
				var angle = Math.atan2(dy, dx);
				self.rotation = angle + Math.PI / 2;
			}
		}
		// Also move forward
		self.y += self.speed;
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			// Create explosion effect
			var explosion = LK.getAsset('explosion', {
				anchorX: 0.5,
				anchorY: 0.5,
				x: self.x,
				y: self.y
			});
			game.addChild(explosion);
			// Fade out explosion with tween effect
			tween(explosion, {
				alpha: 0
			}, {
				duration: 500,
				onFinish: function onFinish() {
					explosion.destroy();
				}
			});
			self.destroy();
			LK.getSound('explosion').play();
			return true;
		}
		return false;
	};
	return self;
});
var Missile = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('missile', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 4;
	self.damage = 2;
	self.trackingSpeed = 0.5;
	self.isBossMissile = false;
	self.baseSpeed = 4;
	self.rotation = 0;
	self.update = function () {
		// Enhanced homing behavior
		if (player) {
			var dx = player.x - self.x;
			var dy = player.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance > 0) {
				// Stronger and faster tracking for boss missiles
				var currentTrackingSpeed = self.isBossMissile ? self.trackingSpeed * 3 : self.trackingSpeed;
				// Calculate angle to player
				var angle = Math.atan2(dy, dx);
				// Apply guided movement
				self.x += Math.cos(angle) * currentTrackingSpeed;
				self.y += Math.sin(angle) * currentTrackingSpeed;
				// Rotate missile to face direction of movement for visual feedback
				self.rotation = angle + Math.PI / 2;
			}
		}
		// Base forward movement (faster for boss missiles)
		var forwardSpeed = self.isBossMissile ? self.speed * 1.5 : self.speed;
		self.y += forwardSpeed;
	};
	return self;
});
var Particle = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('particle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityX = 0;
	self.velocityY = 0;
	self.life = 60;
	self.maxLife = 60;
	self.fadeOut = true;
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
		self.life--;
		if (self.fadeOut) {
			var lifeRatio = self.life / self.maxLife;
			graphics.alpha = lifeRatio;
			// Smooth scaling effect
			graphics.scaleX = lifeRatio;
			graphics.scaleY = lifeRatio;
		}
		if (self.life <= 0) {
			self.destroy();
		}
	};
	return self;
});
var PlayerBullet = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('playerBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -12;
	self.damage = 1;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var PlayerJet = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('playerJet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.maxHealth = 3;
	self.health = 3;
	self.speed = 8;
	self.fireRate = 15;
	self.fireTimer = 0;
	self.invulnerable = false;
	self.invulnerableTimer = 0;
	self.guidedMissileLevel = 0;
	self.guidedMissileRate = 90;
	self.guidedMissileTimer = 0;
	self.update = function () {
		if (self.fireTimer > 0) {
			self.fireTimer--;
		}
		if (self.guidedMissileTimer > 0) {
			self.guidedMissileTimer--;
		}
		if (self.invulnerable) {
			self.invulnerableTimer--;
			if (self.invulnerableTimer <= 0) {
				self.invulnerable = false;
				graphics.alpha = 1;
			} else {
				graphics.alpha = 0.5;
			}
		}
		// Auto-fire
		if (self.fireTimer <= 0) {
			self.fire();
			self.fireTimer = self.fireRate;
		}
		// Auto-fire guided missiles if upgraded
		if (self.guidedMissileLevel > 0 && self.guidedMissileTimer <= 0) {
			self.fireGuidedMissile();
			self.guidedMissileTimer = self.guidedMissileRate;
		}
	};
	self.fire = function () {
		var bullet = new PlayerBullet();
		bullet.x = self.x;
		bullet.y = self.y - 50;
		playerBullets.push(bullet);
		game.addChild(bullet);
		LK.getSound('shoot').play();
	};
	self.fireGuidedMissile = function () {
		var guidedMissile = new GuidedMissile();
		guidedMissile.x = self.x;
		guidedMissile.y = self.y - 50;
		guidedMissile.upgradeLevel = self.guidedMissileLevel;
		// Visual effect based on upgrade level
		var tintColor = 0x00FF00 + self.guidedMissileLevel * 0x001100;
		tween(guidedMissile, {
			tint: tintColor,
			scaleX: 1.2,
			scaleY: 1.2
		}, {
			duration: 100
		});
		guidedMissiles.push(guidedMissile);
		game.addChild(guidedMissile);
		LK.getSound('missile').play();
	};
	self.takeDamage = function (damage) {
		if (self.invulnerable) return;
		self.health -= damage;
		self.invulnerable = true;
		self.invulnerableTimer = 60;
		LK.effects.flashObject(self, 0xFF0000, 500);
		if (self.health <= 0) {
			gameOver();
		}
		updateHealthDisplay();
	};
	return self;
});
var Rocket = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('missile', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 1.5
	});
	graphics.tint = 0xFF4444;
	self.speed = 5;
	self.damage = 3;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var StarField = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('star', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = Math.random() * 2 + 1;
	self.twinklePhase = Math.random() * Math.PI * 2;
	self.baseAlpha = Math.random() * 0.8 + 0.2;
	self.update = function () {
		self.y += self.speed;
		// Twinkling effect
		self.twinklePhase += 0.1;
		graphics.alpha = self.baseAlpha + Math.sin(self.twinklePhase) * 0.3;
	};
	return self;
});
var Trail = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('trail', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.life = 30;
	self.maxLife = 30;
	self.update = function () {
		self.life--;
		graphics.alpha = self.life / self.maxLife;
		graphics.scaleY = self.life / self.maxLife;
		if (self.life <= 0) {
			self.destroy();
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x001122,
	fullscreen: true
});

/**** 
* Game Code
****/ 
// Background setup
var background1 = LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0
});
var background2 = LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: -2732
});
game.addChild(background1);
game.addChild(background2);
// Game state variables
var currentWave = 1;
var maxWaves = 20;
var waveEnemies = [];
var enemiesSpawned = 0;
var enemiesToSpawn = 5;
var spawnTimer = 0;
var spawnRate = 60;
var waveComplete = false;
var gameState = 'playing'; // 'playing', 'upgrading', 'gameover'
// Game objects
var player = null;
var playerBullets = [];
var enemyBullets = [];
var missiles = [];
var rockets = [];
var guidedMissiles = [];
var enemies = [];
var currentBoss = null;
var particles = [];
var trails = [];
var maxTrails = 20;
var stars = [];
// UI elements
var waveText = null;
var healthText = null;
var upgradeContainer = null;
// Initialize player
player = new PlayerJet();
player.x = 1024;
player.y = 2800;
game.addChild(player);
// Smooth entrance animation
tween(player, {
	y: 2300
}, {
	duration: 1000,
	easing: tween.easeOut
});
// Initialize UI
waveText = new Text2('Wave: 1', {
	size: 60,
	fill: 0xFFFFFF
});
waveText.anchor.set(0.5, 0);
LK.gui.top.addChild(waveText);
waveText.y = 50;
healthText = new Text2('Health: 3', {
	size: 80,
	fill: 0x00FF00
});
healthText.anchor.set(1, 0);
LK.gui.topRight.addChild(healthText);
healthText.x = -20;
healthText.y = 50;
function updateHealthDisplay() {
	healthText.setText('Health: ' + player.health);
}
function updateWaveDisplay() {
	waveText.setText('Wave: ' + currentWave);
}
function spawnEnemy() {
	// Spawn boss on waves 10 and 20
	if ((currentWave === 10 || currentWave === 20) && enemiesSpawned === 0) {
		var boss = new Boss();
		boss.x = 1024;
		boss.y = -150;
		if (currentWave === 10) {
			// Wave 10 boss: 2 missiles, 1 bullet
			boss.maxHealth = 30;
			boss.health = 30;
			boss.weaponSystems.bullets = 1;
			boss.weaponSystems.missiles = 2;
			boss.weaponSystems.rockets = 0;
			boss.bossType = 1;
		} else if (currentWave === 20) {
			// Wave 20 boss: 2 rockets, 2 bullets, more health
			boss.maxHealth = 50;
			boss.health = 50;
			boss.weaponSystems.bullets = 2;
			boss.weaponSystems.missiles = 0;
			boss.weaponSystems.rockets = 2;
			boss.bossType = 2;
		}
		enemies.push(boss);
		game.addChild(boss);
		currentBoss = boss;
		// Boss entrance animation
		boss.alpha = 0;
		boss.scaleX = 0.5;
		boss.scaleY = 0.5;
		tween(boss, {
			alpha: 1,
			scaleX: 1,
			scaleY: 1
		}, {
			duration: 1500,
			easing: tween.easeOut
		});
		enemiesSpawned++;
		return;
	}
	var enemy;
	// Spawn kamikaze planes starting from wave 15
	if (currentWave >= 15 && Math.random() < 0.3) {
		enemy = new KamikazeJet();
		enemy.x = Math.random() * 1700 + 174;
		enemy.y = -90;
		// Scale kamikaze difficulty
		enemy.health = Math.floor(currentWave / 8) + 1;
		enemy.speed = 3 + currentWave * 0.3;
		enemy.trackingSpeed = 1.5 + currentWave * 0.1;
	} else {
		enemy = new EnemyJet();
		enemy.x = Math.random() * 1700 + 174;
		enemy.y = -90;
		// Scale difficulty based on wave
		enemy.health = Math.floor(currentWave / 5) + 1;
		enemy.speed = 2 + currentWave * 0.2;
		enemy.fireRate = Math.max(60 - currentWave * 2, 30);
		// Enable missiles for later waves
		if (currentWave >= 5) {
			enemy.canFireMissiles = true;
		}
	}
	enemies.push(enemy);
	game.addChild(enemy);
	// Enemy entrance animation
	enemy.alpha = 0;
	enemy.y -= 100;
	tween(enemy, {
		alpha: 1,
		y: enemy.y + 100
	}, {
		duration: 800,
		easing: tween.easeOut
	});
	enemiesSpawned++;
}
function startWave() {
	currentWave++;
	if (currentWave > maxWaves) {
		showYouWinScreen();
		return;
	}
	// Boss waves spawn only 1 enemy (the boss)
	if (currentWave === 10 || currentWave === 20) {
		enemiesToSpawn = 1;
	} else {
		// Standard enemy count progression
		enemiesToSpawn = 5 + Math.floor(currentWave * 1.5);
	}
	enemiesSpawned = 0;
	spawnTimer = 0;
	waveComplete = false;
	gameState = 'playing';
	updateWaveDisplay();
	// Wave transition animation
	waveText.alpha = 0;
	waveText.scaleX = 2;
	waveText.scaleY = 2;
	tween(waveText, {
		alpha: 1,
		scaleX: 1,
		scaleY: 1
	}, {
		duration: 1000,
		easing: tween.bounceOut
	});
	// Hide upgrade menu if visible
	if (upgradeContainer) {
		upgradeContainer.destroy();
		upgradeContainer = null;
	}
}
function completeWave() {
	if (currentWave >= maxWaves) {
		showYouWinScreen();
		return;
	}
	waveComplete = true;
	gameState = 'upgrading';
	// Fade out all bullets and missiles smoothly
	for (var i = 0; i < playerBullets.length; i++) {
		var bullet = playerBullets[i];
		tween(bullet, {
			alpha: 0
		}, {
			duration: 800,
			onFinish: function onFinish() {
				if (this.target && this.target.destroy) {
					this.target.destroy();
				}
			}
		});
	}
	playerBullets = [];
	for (var i = 0; i < enemyBullets.length; i++) {
		var bullet = enemyBullets[i];
		tween(bullet, {
			alpha: 0
		}, {
			duration: 800,
			onFinish: function onFinish() {
				if (this.target && this.target.destroy) {
					this.target.destroy();
				}
			}
		});
	}
	enemyBullets = [];
	for (var i = 0; i < missiles.length; i++) {
		var missile = missiles[i];
		tween(missile, {
			alpha: 0,
			scaleX: 0.5,
			scaleY: 0.5
		}, {
			duration: 1000,
			onFinish: function onFinish() {
				if (this.target && this.target.destroy) {
					this.target.destroy();
				}
			}
		});
	}
	missiles = [];
	for (var i = 0; i < rockets.length; i++) {
		var rocket = rockets[i];
		tween(rocket, {
			alpha: 0,
			scaleX: 0.5,
			scaleY: 0.5
		}, {
			duration: 1000,
			onFinish: function onFinish() {
				if (this.target && this.target.destroy) {
					this.target.destroy();
				}
			}
		});
	}
	rockets = [];
	for (var i = 0; i < guidedMissiles.length; i++) {
		var guidedMissile = guidedMissiles[i];
		tween(guidedMissile, {
			alpha: 0,
			scaleX: 0.5,
			scaleY: 0.5
		}, {
			duration: 1000,
			onFinish: function onFinish() {
				if (this.target && this.target.destroy) {
					this.target.destroy();
				}
			}
		});
	}
	guidedMissiles = [];
	showUpgradeMenu();
}
function showUpgradeMenu() {
	upgradeContainer = new Container();
	game.addChild(upgradeContainer);
	var titleText = new Text2('Choose Upgrade', {
		size: 80,
		fill: 0xFFFF00
	});
	titleText.anchor.set(0.5, 0.5);
	titleText.x = 1024;
	titleText.y = 800;
	upgradeContainer.addChild(titleText);
	var upgrades = [{
		text: 'Faster Firing',
		action: function action() {
			player.fireRate = Math.max(player.fireRate - 3, 5);
		}
	}, {
		text: 'More Health',
		action: function action() {
			player.maxHealth++;
			player.health = player.maxHealth;
		}
	}, {
		text: 'Faster Movement',
		action: function action() {
			player.speed += 2;
		}
	}];
	// Add guided missiles upgrade only from wave 10 onwards
	if (currentWave >= 10) {
		upgrades.push({
			text: 'Guided Missiles',
			action: function action() {
				player.guidedMissileLevel++;
				// Faster firing rate with each upgrade (but starting from slower base rate)
				player.guidedMissileRate = Math.max(90 - player.guidedMissileLevel * 10, 30);
			}
		});
	}
	for (var i = 0; i < Math.min(upgrades.length, 4); i++) {
		var upgrade = upgrades[i];
		var button = new Container();
		var buttonBg = LK.getAsset('upgradeButton', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		button.addChild(buttonBg);
		var buttonText = new Text2(upgrade.text, {
			size: 40,
			fill: 0xFFFFFF
		});
		buttonText.anchor.set(0.5, 0.5);
		button.addChild(buttonText);
		button.x = 1024;
		button.y = 1200 + i * 200;
		button.upgrade = upgrade;
		button.down = function (x, y, obj) {
			this.upgrade.action();
			updateHealthDisplay();
			startWave();
		};
		upgradeContainer.addChild(button);
	}
}
function gameOver() {
	gameState = 'gameover';
	showGameOverScreen();
}
function showGameOverScreen() {
	var gameOverContainer = new Container();
	game.addChild(gameOverContainer);
	gameOverContainer.zIndex = 1000;
	// Semi-transparent background
	var overlay = LK.getAsset('background', {
		anchorX: 0,
		anchorY: 0,
		x: 0,
		y: 0
	});
	overlay.alpha = 0.7;
	overlay.tint = 0x000000;
	gameOverContainer.addChild(overlay);
	// Game Over title
	var gameOverText = new Text2('GAME OVER', {
		size: 120,
		fill: 0xFF0000
	});
	gameOverText.anchor.set(0.5, 0.5);
	gameOverText.x = 1024;
	gameOverText.y = 1200;
	gameOverContainer.addChild(gameOverText);
	// Final score/wave text
	var finalScoreText = new Text2('Final Wave: ' + currentWave, {
		size: 60,
		fill: 0xFFFFFF
	});
	finalScoreText.anchor.set(0.5, 0.5);
	finalScoreText.x = 1024;
	finalScoreText.y = 1350;
	gameOverContainer.addChild(finalScoreText);
	// Restart button
	var restartButton = new Container();
	var buttonBg = LK.getAsset('upgradeButton', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.2,
		scaleY: 1.5
	});
	buttonBg.tint = 0x00AA00;
	restartButton.addChild(buttonBg);
	var buttonText = new Text2('PLAY AGAIN', {
		size: 50,
		fill: 0xFFFFFF
	});
	buttonText.anchor.set(0.5, 0.5);
	restartButton.addChild(buttonText);
	restartButton.x = 1024;
	restartButton.y = 1600;
	restartButton.down = function (x, y, obj) {
		restartGame();
	};
	gameOverContainer.addChild(restartButton);
}
function showYouWinScreen() {
	var youWinContainer = new Container();
	game.addChild(youWinContainer);
	youWinContainer.zIndex = 1000;
	// Semi-transparent background
	var overlay = LK.getAsset('background', {
		anchorX: 0,
		anchorY: 0,
		x: 0,
		y: 0
	});
	overlay.alpha = 0.7;
	overlay.tint = 0x000000;
	youWinContainer.addChild(overlay);
	// You Win title
	var youWinText = new Text2('YOU WIN!', {
		size: 120,
		fill: 0x00FF00
	});
	youWinText.anchor.set(0.5, 0.5);
	youWinText.x = 1024;
	youWinText.y = 1200;
	youWinContainer.addChild(youWinText);
	// Congratulations text
	var congratsText = new Text2('You defeated all waves!', {
		size: 60,
		fill: 0xFFFFFF
	});
	congratsText.anchor.set(0.5, 0.5);
	congratsText.x = 1024;
	congratsText.y = 1350;
	youWinContainer.addChild(congratsText);
	// Play again button
	var playAgainButton = new Container();
	var buttonBg = LK.getAsset('upgradeButton', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.2,
		scaleY: 1.5
	});
	buttonBg.tint = 0x00AA00;
	playAgainButton.addChild(buttonBg);
	var buttonText = new Text2('PLAY AGAIN', {
		size: 50,
		fill: 0xFFFFFF
	});
	buttonText.anchor.set(0.5, 0.5);
	playAgainButton.addChild(buttonText);
	playAgainButton.x = 1024;
	playAgainButton.y = 1600;
	playAgainButton.down = function (x, y, obj) {
		restartGame();
	};
	youWinContainer.addChild(playAgainButton);
}
function restartGame() {
	// Reset game state
	gameState = 'playing';
	currentWave = 1;
	waveComplete = false;
	enemiesSpawned = 0;
	enemiesToSpawn = 5;
	spawnTimer = 0;
	// Clear all game objects
	for (var i = playerBullets.length - 1; i >= 0; i--) {
		playerBullets[i].destroy();
	}
	playerBullets = [];
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		enemyBullets[i].destroy();
	}
	enemyBullets = [];
	for (var i = missiles.length - 1; i >= 0; i--) {
		missiles[i].destroy();
	}
	missiles = [];
	for (var i = rockets.length - 1; i >= 0; i--) {
		rockets[i].destroy();
	}
	rockets = [];
	for (var i = guidedMissiles.length - 1; i >= 0; i--) {
		guidedMissiles[i].destroy();
	}
	guidedMissiles = [];
	for (var i = enemies.length - 1; i >= 0; i--) {
		enemies[i].destroy();
	}
	enemies = [];
	currentBoss = null;
	// Clear particles and trails
	for (var i = particles.length - 1; i >= 0; i--) {
		particles[i].destroy();
	}
	particles = [];
	for (var i = trails.length - 1; i >= 0; i--) {
		trails[i].destroy();
	}
	trails = [];
	for (var i = stars.length - 1; i >= 0; i--) {
		stars[i].destroy();
	}
	stars = [];
	// Reset player
	if (player) {
		player.destroy();
	}
	player = new PlayerJet();
	player.x = 1024;
	player.y = 2300;
	player.health = player.maxHealth;
	player.fireRate = 15;
	player.speed = 8;
	player.guidedMissileLevel = 0;
	player.guidedMissileTimer = 0;
	game.addChild(player);
	// Clear any existing containers
	if (upgradeContainer) {
		upgradeContainer.destroy();
		upgradeContainer = null;
	}
	// Find and remove all game over or win screen containers
	for (var i = game.children.length - 1; i >= 0; i--) {
		var child = game.children[i];
		if (child instanceof Container && child.zIndex === 1000) {
			child.destroy();
		}
	}
	// Update UI
	updateWaveDisplay();
	updateHealthDisplay();
}
// Input handling
var dragActive = false;
game.down = function (x, y, obj) {
	if (gameState === 'playing') {
		dragActive = true;
		player.x = x;
		player.y = y;
	}
};
game.move = function (x, y, obj) {
	if (gameState === 'playing' && dragActive) {
		var targetX = Math.max(70, Math.min(1978, x));
		var targetY = Math.max(150, Math.min(2582, y));
		// Direct position update for responsive movement
		player.x = targetX;
		player.y = targetY;
	}
};
game.up = function (x, y, obj) {
	dragActive = false;
};
// Main game loop
game.update = function () {
	if (gameState !== 'playing') return;
	// Background is now static - no movement or scaling
	// Spawn enemies
	if (enemiesSpawned < enemiesToSpawn) {
		spawnTimer++;
		if (spawnTimer >= spawnRate) {
			spawnEnemy();
			spawnTimer = 0;
		}
	}
	// Update player bullets
	for (var i = playerBullets.length - 1; i >= 0; i--) {
		var bullet = playerBullets[i];
		if (bullet.y < -50) {
			bullet.destroy();
			playerBullets.splice(i, 1);
			continue;
		}
		// Check collision with enemies
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (bullet.intersects(enemy)) {
				if (enemy.takeDamage(bullet.damage)) {
					enemies.splice(j, 1);
					// Reset boss reference if boss was destroyed
					if (enemy === currentBoss) {
						currentBoss = null;
					}
				}
				bullet.destroy();
				playerBullets.splice(i, 1);
				break;
			}
		}
	}
	// Update enemy bullets
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		var bullet = enemyBullets[i];
		if (bullet.y > 2782) {
			bullet.destroy();
			enemyBullets.splice(i, 1);
			continue;
		}
		// Check collision with player
		if (bullet.intersects(player)) {
			player.takeDamage(bullet.damage);
			bullet.destroy();
			enemyBullets.splice(i, 1);
		}
	}
	// Update missiles
	for (var i = missiles.length - 1; i >= 0; i--) {
		var missile = missiles[i];
		if (missile.y > 2782 || missile.y < -50 || missile.x < -50 || missile.x > 2098) {
			missile.destroy();
			missiles.splice(i, 1);
			continue;
		}
		// Check collision with player
		if (missile.intersects(player)) {
			player.takeDamage(missile.damage);
			missile.destroy();
			missiles.splice(i, 1);
		}
	}
	// Update rockets
	for (var i = rockets.length - 1; i >= 0; i--) {
		var rocket = rockets[i];
		if (rocket.y > 2782 || rocket.y < -50 || rocket.x < -50 || rocket.x > 2098) {
			rocket.destroy();
			rockets.splice(i, 1);
			continue;
		}
		// Check collision with player
		if (rocket.intersects(player)) {
			player.takeDamage(rocket.damage);
			rocket.destroy();
			rockets.splice(i, 1);
		}
	}
	// Update guided missiles
	for (var i = guidedMissiles.length - 1; i >= 0; i--) {
		var guidedMissile = guidedMissiles[i];
		if (guidedMissile.y < -50 || guidedMissile.x < -50 || guidedMissile.x > 2098) {
			guidedMissile.destroy();
			guidedMissiles.splice(i, 1);
			continue;
		}
		// Check collision with enemies
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (guidedMissile.intersects(enemy)) {
				if (enemy.takeDamage(guidedMissile.damage)) {
					enemies.splice(j, 1);
					// Reset boss reference if boss was destroyed
					if (enemy === currentBoss) {
						currentBoss = null;
					}
				}
				guidedMissile.destroy();
				guidedMissiles.splice(i, 1);
				break;
			}
		}
	}
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		var enemy = enemies[i];
		if (enemy.y > 2782) {
			enemy.destroy();
			enemies.splice(i, 1);
			continue;
		}
		// Check kamikaze collision with player
		if (enemy.isKamikaze && enemy.intersects(player)) {
			// Kamikaze plane crashes into player
			player.takeDamage(2); // Kamikaze does more damage
			enemy.destroy();
			enemies.splice(i, 1);
			// Create explosion at crash site
			var explosion = LK.getAsset('explosion', {
				anchorX: 0.5,
				anchorY: 0.5,
				x: enemy.x,
				y: enemy.y
			});
			game.addChild(explosion);
			tween(explosion, {
				alpha: 0
			}, {
				duration: 500,
				onFinish: function onFinish() {
					explosion.destroy();
				}
			});
			LK.getSound('explosion').play();
		}
	}
	// Update particles
	for (var i = particles.length - 1; i >= 0; i--) {
		var particle = particles[i];
		if (particle.life <= 0) {
			particle.destroy();
			particles.splice(i, 1);
		}
	}
	// Update trails
	for (var i = trails.length - 1; i >= 0; i--) {
		var trail = trails[i];
		if (trail.life <= 0 || trail.y > 2832) {
			trail.destroy();
			trails.splice(i, 1);
		}
	}
	// Create engine trail for player - reduced frequency
	if (LK.ticks % 5 === 0 && trails.length < maxTrails) {
		var trail = new Trail();
		trail.x = player.x;
		trail.y = player.y + 60;
		trails.push(trail);
		game.addChild(trail);
	}
	// Update starfield
	for (var i = stars.length - 1; i >= 0; i--) {
		var star = stars[i];
		if (star.y > 2782) {
			star.destroy();
			stars.splice(i, 1);
		}
	}
	// Generate new stars - limit to prevent performance issues
	if (LK.ticks % 30 === 0 && stars.length < 30) {
		var star = new StarField();
		star.x = Math.random() * 2048;
		star.y = -10;
		stars.push(star);
		game.addChild(star);
	}
	// Check wave completion
	if (enemiesSpawned >= enemiesToSpawn && enemies.length === 0 && !waveComplete) {
		completeWave();
	}
};
// Start first wave
updateWaveDisplay();
updateHealthDisplay();
LK.playMusic('bgmusic');