/**** 
* Classes
****/ 
// Complete airship boss class
var AirshipBoss = Container.expand(function () {
	var self = Container.call(this);
	// Create airship body
	var body = self.attachAsset('airshipBody', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Create wings
	var leftWing = self.addChild(LK.getAsset('airshipWing', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: -400,
		y: 0
	}));
	var rightWing = self.addChild(LK.getAsset('airshipWing', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 400,
		y: 0
	}));
	// Create core
	self.core = new AirshipCore();
	self.core.x = 0;
	self.core.y = 0;
	self.addChild(self.core);
	// Create turrets
	self.turrets = [];
	var turretPositions = [{
		x: -200,
		y: -100
	}, {
		x: 200,
		y: -100
	}, {
		x: -300,
		y: 100
	}, {
		x: 300,
		y: 100
	}, {
		x: 0,
		y: 200
	}];
	for (var i = 0; i < turretPositions.length; i++) {
		var turret = new AirshipTurret();
		turret.x = turretPositions[i].x;
		turret.y = turretPositions[i].y;
		self.addChild(turret);
		self.turrets.push(turret);
	}
	// Boss properties
	self.active = true;
	self.phase = 1;
	self.moveDirection = 1;
	self.moveSpeed = 1;
	self.maxMoveX = 300;
	self.startingY = 400;
	self.lastX = 0;
	// Move pattern
	self.update = function () {
		self.lastX = self.x;
		// Move side to side
		self.x += self.moveSpeed * self.moveDirection;
		// Check if we need to change direction
		if (Math.abs(self.x) > self.maxMoveX) {
			self.moveDirection *= -1;
		}
		// Update core state
		self.core.update();
		// Count active turrets
		var activeTurrets = 0;
		for (var i = 0; i < self.turrets.length; i++) {
			if (self.turrets[i].active) {
				activeTurrets++;
				// Update turrets and check if they need to fire
				if (self.turrets[i].update()) {
					// Signal to create a bullet
					return {
						fire: true,
						x: self.x + self.turrets[i].x,
						y: self.y + self.turrets[i].y
					};
				}
			}
		}
		// Check if we need to expose the core
		if (activeTurrets === 0 && !self.core.exposed) {
			self.core.setExposed(true);
			self.phase = 2;
			// Increase movement speed in phase 2
			self.moveSpeed = 2;
		}
		return {
			fire: false
		};
	};
	// Check if a specific part of the airship is hit
	self.checkHit = function (bullet) {
		// Try to hit turrets first
		for (var i = 0; i < self.turrets.length; i++) {
			if (bullet.intersects(self.turrets[i]) && self.turrets[i].active) {
				if (self.turrets[i].takeHit(bullet.damage)) {
					return {
						hit: true,
						destroyed: true,
						type: 'turret'
					};
				}
				return {
					hit: true,
					destroyed: false,
					type: 'turret'
				};
			}
		}
		// Try to hit core if exposed
		if (self.core.exposed && bullet.intersects(self.core)) {
			if (self.core.takeHit(bullet.damage)) {
				self.active = false;
				return {
					hit: true,
					destroyed: true,
					type: 'core'
				};
			}
			return {
				hit: true,
				destroyed: false,
				type: 'core'
			};
		}
		// Hit the body but no damage
		if (bullet.intersects(body)) {
			return {
				hit: true,
				destroyed: false,
				type: 'body'
			};
		}
		return {
			hit: false
		};
	};
	return self;
});
// Set game background
// Airship core class
var AirshipCore = Container.expand(function () {
	var self = Container.call(this);
	// Attach core graphics
	var coreGraphics = self.attachAsset('airshipCore', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Core properties
	self.health = 150; // Reduced health to make boss easier to defeat
	self.maxHealth = 150;
	self.active = true;
	self.exposed = false;
	self.lastWasIntersecting = false;
	// Update core state
	self.update = function () {
		// Pulsate effect when exposed
		if (self.exposed) {
			coreGraphics.alpha = 0.5 + Math.sin(LK.ticks * 0.1) * 0.5;
		}
	};
	// Handle core being hit
	self.takeHit = function (damage) {
		if (!self.active || !self.exposed) {
			return false;
		}
		self.health -= damage;
		LK.effects.flashObject(self, 0xff0000, 300);
		if (self.health <= 0) {
			self.health = 0;
			self.active = false;
			return true; // Core destroyed
		}
		return false; // Core still active
	};
	// Expose the core when all turrets are destroyed
	self.setExposed = function (isExposed) {
		self.exposed = isExposed;
		if (isExposed) {
			coreGraphics.tint = 0xff0000;
		} else {
			coreGraphics.tint = 0xffffff;
		}
	};
	return self;
});
// Airship turret class
var AirshipTurret = Container.expand(function () {
	var self = Container.call(this);
	// Attach turret graphics
	var turretGraphics = self.attachAsset('airshipTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Turret properties
	self.health = 50;
	self.maxHealth = 50;
	self.fireRate = 120;
	self.fireCounter = Math.floor(Math.random() * 60); // Randomize initial fire time
	self.active = true;
	self.lastWasIntersecting = false;
	// Update turret state
	self.update = function () {
		if (!self.active) {
			return;
		}
		self.fireCounter--;
		// Ready to fire
		if (self.fireCounter <= 0) {
			self.fireCounter = self.fireRate;
			return true; // Signal to create a bullet
		}
		return false;
	};
	// Handle turret being hit
	self.takeHit = function (damage) {
		if (!self.active) {
			return false;
		}
		self.health -= damage;
		LK.effects.flashObject(self, 0xff0000, 300);
		if (self.health <= 0) {
			self.health = 0;
			self.active = false;
			turretGraphics.alpha = 0.3;
			return true; // Turret destroyed
		}
		return false; // Turret still active
	};
	return self;
});
// Enemy bullet class
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	// Attach bullet graphics
	var bulletGraphics = self.attachAsset('enemyBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Bullet properties
	self.speed = 8; // Moving downward
	self.damage = 10;
	self.active = true;
	self.lastY = 0;
	self.lastWasIntersecting = false;
	// Update bullet position
	self.update = function () {
		self.lastY = self.y;
		self.y += self.speed;
		// Check if bullet is off-screen
		if (self.y > 2732 + 50) {
			self.active = false;
		}
	};
	return self;
});
// Explosion effect class
var Explosion = Container.expand(function () {
	var self = Container.call(this);
	// Attach explosion graphics
	var explosionGraphics = self.attachAsset('explosion', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.5,
		scaleY: 0.5
	});
	// Explosion properties
	self.lifetime = 30; // frames
	self.active = true;
	// Update explosion state
	self.update = function () {
		self.lifetime--;
		// Scale and fade explosion
		explosionGraphics.scaleX += 0.05;
		explosionGraphics.scaleY += 0.05;
		explosionGraphics.alpha = self.lifetime / 30;
		if (self.lifetime <= 0) {
			self.active = false;
		}
	};
	return self;
});
// Player class for the fighter plane
var Player = Container.expand(function () {
	var self = Container.call(this);
	// Attach player graphics
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Player properties
	self.speed = 10;
	self.health = 100;
	self.maxHealth = 100;
	self.fireRate = 15;
	self.lastShot = 0;
	self.isDragging = false;
	self.lastX = 0;
	self.lastY = 0;
	// Player movement bounds
	self.minX = 100;
	self.maxX = 2048 - 100;
	self.minY = 2732 / 2;
	self.maxY = 2732 - 100;
	// Update player position and state
	self.update = function () {
		self.lastX = self.x;
		self.lastY = self.y;
		// Keep player within bounds
		if (self.x < self.minX) {
			self.x = self.minX;
		}
		if (self.x > self.maxX) {
			self.x = self.maxX;
		}
		if (self.y < self.minY) {
			self.y = self.minY;
		}
		if (self.y > self.maxY) {
			self.y = self.maxY;
		}
	};
	// Handle player being hit
	self.takeHit = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.health = 0;
			return true; // Player died
		}
		LK.effects.flashObject(self, 0xff0000, 300);
		return false; // Player still alive
	};
	// Event handling for touch/click
	self.down = function (x, y, obj) {
		self.isDragging = true;
	};
	self.up = function (x, y, obj) {
		self.isDragging = false;
	};
	return self;
});
// Player bullet class
var PlayerBullet = Container.expand(function () {
	var self = Container.call(this);
	// Attach bullet graphics
	var bulletGraphics = self.attachAsset('playerBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Bullet properties
	self.speed = -15; // Moving upward
	self.damage = 25; // Increased damage to destroy turrets faster
	self.active = true;
	self.lastY = 0;
	self.lastWasIntersecting = false;
	// Update bullet position
	self.update = function () {
		self.lastY = self.y;
		self.y += self.speed;
		// Check if bullet is off-screen
		if (self.y < -50) {
			self.active = false;
		}
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Set game background
// Initialize game assets
game.setBackgroundColor(0x1a1a2e);
// Game state variables
var player;
var airshipBoss;
var playerBullets = [];
var enemyBullets = [];
var explosions = [];
var score = 0;
var gameActive = true;
var bossDefeated = false;
// Create UI elements
var scoreText = new Text2('SCORE: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0, 0);
LK.gui.topLeft.addChild(scoreText);
scoreText.x = 120; // Keep away from top-left 100x100 area
scoreText.y = 50;
// Create player health bar
var healthBarBg = game.addChild(LK.getAsset('healthBarBg', {
	anchorX: 0,
	anchorY: 0.5,
	x: 120,
	y: 120
}));
var healthBar = game.addChild(LK.getAsset('healthBar', {
	anchorX: 0,
	anchorY: 0.5,
	x: 120,
	y: 120
}));
var healthText = new Text2('HEALTH', {
	size: 40,
	fill: 0xFFFFFF
});
healthText.anchor.set(0, 0.5);
healthText.x = 250;
healthText.y = 120;
game.addChild(healthText);
// Create boss health bar (initially hidden)
var bossHealthBarBg = game.addChild(LK.getAsset('healthBarBg', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 200
}));
var bossHealthBar = game.addChild(LK.getAsset('healthBar', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 200,
	tint: 0xff0000
}));
var bossText = new Text2('BOSS', {
	size: 40,
	fill: 0xFFFFFF
});
bossText.anchor.set(0.5, 0.5);
bossText.x = 2048 / 2;
bossText.y = 200;
game.addChild(bossText);
// Initially hide boss health
bossHealthBarBg.alpha = 0;
bossHealthBar.alpha = 0;
bossText.alpha = 0;
// Initialize player
function initPlayer() {
	player = new Player();
	player.x = 2048 / 2;
	player.y = 2732 - 300;
	game.addChild(player);
}
// Initialize airship boss
function initBoss() {
	airshipBoss = new AirshipBoss();
	airshipBoss.x = 2048 / 2;
	airshipBoss.y = airshipBoss.startingY;
	airshipBoss.lastX = airshipBoss.x;
	game.addChild(airshipBoss);
	// Show boss health
	bossHealthBarBg.alpha = 1;
	bossHealthBar.alpha = 1;
	bossText.alpha = 1;
}
// Create player bullet
function createPlayerBullet() {
	var bullet = new PlayerBullet();
	bullet.x = player.x;
	bullet.y = player.y - 60;
	bullet.lastY = bullet.y;
	bullet.lastWasIntersecting = false;
	playerBullets.push(bullet);
	game.addChild(bullet);
	LK.getSound('playerShoot').play();
}
// Create enemy bullet
function createEnemyBullet(x, y) {
	var bullet = new EnemyBullet();
	bullet.x = x;
	bullet.y = y;
	bullet.lastY = bullet.y;
	bullet.lastWasIntersecting = false;
	enemyBullets.push(bullet);
	game.addChild(bullet);
	LK.getSound('enemyShoot').play();
}
// Create explosion
function createExplosion(x, y, scale) {
	var explosion = new Explosion();
	explosion.x = x;
	explosion.y = y;
	if (scale) {
		explosion.children[0].scaleX = scale;
		explosion.children[0].scaleY = scale;
	}
	explosions.push(explosion);
	game.addChild(explosion);
	LK.getSound('explosion').play();
}
// Update score
function updateScore(points) {
	score += points;
	scoreText.setText('SCORE: ' + score);
}
// Initialize game
initPlayer();
initBoss();
LK.playMusic('battleMusic');
// Game input handlers
game.down = function (x, y, obj) {
	if (!gameActive) {
		return;
	}
	// Auto-firing is handled in update
	player.isDragging = true;
	player.targetX = x;
	player.targetY = y;
};
game.up = function (x, y, obj) {
	player.isDragging = false;
};
game.move = function (x, y, obj) {
	if (!gameActive || !player.isDragging) {
		return;
	}
	player.x = x;
	player.y = y;
};
// Main game update loop
game.update = function () {
	if (!gameActive) {
		return;
	}
	// Update player
	player.update();
	// Auto-fire player bullets
	if (LK.ticks % player.fireRate === 0) {
		createPlayerBullet();
	}
	// Update boss
	if (airshipBoss && airshipBoss.active) {
		var bossUpdate = airshipBoss.update();
		if (bossUpdate.fire) {
			createEnemyBullet(bossUpdate.x, bossUpdate.y);
		}
		// Update boss health bar
		var bossHealthPercent = airshipBoss.core.health / airshipBoss.core.maxHealth;
		bossHealthBar.scale.x = bossHealthPercent;
	}
	// Update player bullets
	for (var i = playerBullets.length - 1; i >= 0; i--) {
		var bullet = playerBullets[i];
		bullet.update();
		// Check for collision with boss
		if (airshipBoss && airshipBoss.active) {
			var hitResult = airshipBoss.checkHit(bullet);
			if (hitResult.hit && bullet.active) {
				bullet.active = false;
				// Create explosion effect
				createExplosion(bullet.x, bullet.y, 0.5);
				// Update score
				if (hitResult.type === 'turret') {
					updateScore(10);
					if (hitResult.destroyed) {
						updateScore(50);
						createExplosion(bullet.x, bullet.y, 1);
					}
				} else if (hitResult.type === 'core') {
					updateScore(20);
					if (hitResult.destroyed) {
						// Boss defeated
						bossDefeated = true;
						updateScore(500);
						createExplosion(airshipBoss.x, airshipBoss.y, 3);
						// Create multiple explosions
						for (var e = 0; e < 10; e++) {
							var randomX = airshipBoss.x + (Math.random() * 600 - 300);
							var randomY = airshipBoss.y + (Math.random() * 400 - 200);
							var randomDelay = Math.floor(Math.random() * 30);
							LK.setTimeout(function (posX, posY) {
								return function () {
									createExplosion(posX, posY, 1 + Math.random());
								};
							}(randomX, randomY), randomDelay * 100);
						}
						// Show you win
						LK.setTimeout(function () {
							LK.showYouWin();
						}, 2000);
					}
				}
			}
		}
		// Remove inactive bullets
		if (!bullet.active) {
			game.removeChild(bullet);
			playerBullets.splice(i, 1);
		}
	}
	// Update enemy bullets
	for (var j = enemyBullets.length - 1; j >= 0; j--) {
		var enemyBullet = enemyBullets[j];
		enemyBullet.update();
		// Check for collision with player bullets
		var hitPlayerBullet = false;
		for (var pb = playerBullets.length - 1; pb >= 0; pb--) {
			if (playerBullets[pb].active && enemyBullet.active && enemyBullet.intersects(playerBullets[pb])) {
				// Enemy bullet and player bullet destroy each other
				enemyBullet.active = false;
				playerBullets[pb].active = false;
				hitPlayerBullet = true;
				// Create small explosion at collision point
				createExplosion((enemyBullet.x + playerBullets[pb].x) / 2, (enemyBullet.y + playerBullets[pb].y) / 2, 0.3);
				// Remove player bullet
				game.removeChild(playerBullets[pb]);
				playerBullets.splice(pb, 1);
				break;
			}
		}
		// If enemy bullet hit a player bullet, continue to next bullet
		if (hitPlayerBullet) {
			game.removeChild(enemyBullet);
			enemyBullets.splice(j, 1);
			continue;
		}
		// Check for collision with player
		if (!enemyBullet.lastWasIntersecting && enemyBullet.intersects(player) && enemyBullet.active) {
			enemyBullet.active = false;
			enemyBullet.lastWasIntersecting = true;
			// Player takes hit
			if (player.takeHit(enemyBullet.damage)) {
				// Player died
				gameActive = false;
				createExplosion(player.x, player.y, 2);
				player.visible = false;
				// Show game over
				LK.setTimeout(function () {
					LK.showGameOver();
				}, 1500);
			} else {
				// Player hit but still alive
				createExplosion(player.x, player.y, 0.7);
				LK.getSound('hit').play();
			}
		}
		// Mark intersecting state
		enemyBullet.lastWasIntersecting = enemyBullet.intersects(player);
		// Remove inactive bullets
		if (!enemyBullet.active) {
			game.removeChild(enemyBullet);
			enemyBullets.splice(j, 1);
		}
	}
	// Update explosions
	for (var k = explosions.length - 1; k >= 0; k--) {
		explosions[k].update();
		if (!explosions[k].active) {
			game.removeChild(explosions[k]);
			explosions.splice(k, 1);
		}
	}
	// Update health bar
	healthBar.scale.x = player.health / player.maxHealth;
};

===================================================================
--- original.js
+++ change.js
@@ -611,21 +611,29 @@
 	for (var j = enemyBullets.length - 1; j >= 0; j--) {
 		var enemyBullet = enemyBullets[j];
 		enemyBullet.update();
 		// Check for collision with player bullets
+		var hitPlayerBullet = false;
 		for (var pb = playerBullets.length - 1; pb >= 0; pb--) {
 			if (playerBullets[pb].active && enemyBullet.active && enemyBullet.intersects(playerBullets[pb])) {
-				// Enemy bullet destroys player bullet
+				// Enemy bullet and player bullet destroy each other
 				enemyBullet.active = false;
 				playerBullets[pb].active = false;
+				hitPlayerBullet = true;
 				// Create small explosion at collision point
 				createExplosion((enemyBullet.x + playerBullets[pb].x) / 2, (enemyBullet.y + playerBullets[pb].y) / 2, 0.3);
 				// Remove player bullet
 				game.removeChild(playerBullets[pb]);
 				playerBullets.splice(pb, 1);
 				break;
 			}
 		}
+		// If enemy bullet hit a player bullet, continue to next bullet
+		if (hitPlayerBullet) {
+			game.removeChild(enemyBullet);
+			enemyBullets.splice(j, 1);
+			continue;
+		}
 		// Check for collision with player
 		if (!enemyBullet.lastWasIntersecting && enemyBullet.intersects(player) && enemyBullet.active) {
 			enemyBullet.active = false;
 			enemyBullet.lastWasIntersecting = true;