/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	highScore: 0
});

/**** 
* Classes
****/ 
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 15;
	self.damage = 1;
	self.update = function () {
		// Auto-move player left and right
		self.y -= self.speed;
		// Auto-destroy bullets that go off screen
		if (self.y < -50) {
			self.destroy();
		}
		// Auto-destroy bullets that go off screen
		if (self.y < -50) {
			self.destroy();
		}
	};
	return self;
});
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 1;
	self.speed = 1 + Math.random(); // Slow down enemy movement speed
	self.value = 100; // score value
	self.canShoot = Math.random() < 0.5; // 50% of enemies can shoot
	self.lastShot = 0;
	self.fireRate = 2000 + Math.random() * 2000; // Random fire rate between 2-4 seconds
	// Create health bar
	self.healthBarBg = self.attachAsset('healthBarBg', {
		anchorX: 0.5,
		anchorY: 0.5,
		y: -70
	});
	self.healthBar = self.attachAsset('healthBar', {
		anchorX: 0.5,
		anchorY: 0.5,
		y: -70
	});
	self.updateHealthBar = function () {
		var healthPercentage = self.health / 2; // 2 is max health
		self.healthBar.scaleX = healthPercentage;
	};
	self.damage = function (amount) {
		self.health -= amount;
		self.updateHealthBar();
		// Flash enemy when hit
		LK.effects.flashObject(self, 0xffffff, 200);
		if (self.health <= 0) {
			// Create explosion
			var explosion = new Explosion();
			explosion.x = self.x;
			explosion.y = self.y;
			game.addChild(explosion);
			// Chance to drop power-up
			if (Math.random() < 0.15) {
				// 15% chance
				var powerUp = new PowerUp();
				powerUp.x = self.x;
				powerUp.y = self.y;
				game.addChild(powerUp);
				powerUps.push(powerUp);
			}
			// Add score
			LK.setScore(LK.getScore() + self.value);
			// Remove from array and destroy
			self.destroy();
		}
	};
	self.shoot = function () {
		var bullet = new EnemyBullet();
		bullet.x = self.x;
		bullet.y = self.y + 50;
		game.addChild(bullet);
		// Add to game's enemyBullets array
		enemyBullets.push(bullet);
		LK.getSound('enemyShoot').play();
	};
	self.update = function () {
		self.y += self.speed;
		// Move slightly left or right
		if (LK.ticks % 60 === 0) {
			self.x += (Math.random() - 0.5) * 100;
			// Keep within bounds
			if (self.x < 100) {
				self.x = 100;
			}
			if (self.x > 2048 - 100) {
				self.x = 2048 - 100;
			}
		}
		// Shooting logic
		if (self.canShoot) {
			var now = Date.now();
			if (now - self.lastShot > self.fireRate) {
				self.lastShot = now;
				self.shoot();
			}
		}
		// Destroy if off screen
		if (self.y > 2732 + 100) {
			self.destroy();
		}
	};
	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;
		// Auto-destroy bullets that go off screen
		if (self.y > 2732 + 50) {
			self.destroy();
		}
	};
	return self;
});
var Explosion = Container.expand(function () {
	var self = Container.call(this);
	var explosionGraphics = self.attachAsset('explosion', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.5,
		scaleY: 0.5
	});
	// Play explosion sound
	LK.getSound('explosion').play();
	// Animate explosion
	tween(explosionGraphics, {
		scaleX: 2,
		scaleY: 2,
		alpha: 0
	}, {
		duration: 500,
		easing: tween.easeOut,
		onFinish: function onFinish() {
			self.destroy();
		}
	});
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.maxHealth = 3;
	self.health = self.maxHealth;
	self.fireRate = 400; // ms between shots
	self.lastShot = 0;
	self.speed = 20;
	self.invulnerable = false;
	// Create health bar
	self.healthBarBg = self.attachAsset('healthBarBg', {
		anchorX: 0.5,
		anchorY: 0.5,
		y: -80
	});
	self.healthBar = self.attachAsset('healthBar', {
		anchorX: 0.5,
		anchorY: 0.5,
		y: -80
	});
	self.updateHealthBar = function () {
		var healthPercentage = self.health / self.maxHealth;
		self.healthBar.scaleX = healthPercentage;
	};
	self.damage = function (amount) {
		if (self.invulnerable) {
			return;
		}
		self.health -= amount;
		self.updateHealthBar();
		LK.getSound('playerHit').play();
		// Flash player when hit
		self.invulnerable = true;
		LK.effects.flashObject(self, 0xff0000, 1000);
		LK.setTimeout(function () {
			self.invulnerable = false;
		}, 1000);
		if (self.health <= 0) {
			// Create explosion
			var explosion = new Explosion();
			explosion.x = self.x;
			explosion.y = self.y;
			game.addChild(explosion);
			// Game over
			LK.setTimeout(function () {
				LK.showGameOver();
			}, 1000);
			self.visible = false;
		}
	};
	self.shoot = function () {
		var now = Date.now();
		if (now - self.lastShot < self.fireRate) {
			return;
		}
		self.lastShot = now;
		var bullet = new Bullet();
		bullet.x = self.x;
		bullet.y = self.y - 50;
		game.addChild(bullet);
		// Add to game's bullets array
		bullets.push(bullet);
		LK.getSound('playerShoot').play();
	};
	self.down = function (x, y, obj) {
		self.shoot();
	};
	self.update = function () {
		// Auto-move player left and right
		if (gameActive) {
			self.x += self.speed;
			if (self.x >= 2048 - 60 || self.x <= 60) {
				self.speed *= -1; // Reverse direction when hitting screen edges
			}
		}
	};
	return self;
});
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	var powerUpGraphics = self.attachAsset('powerUp', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3;
	self.type = Math.floor(Math.random() * 2); // 0: health, 1: faster shooting
	// Modify appearance based on type
	if (self.type === 0) {
		powerUpGraphics.tint = 0x32cd32; // green for health
	} else {
		powerUpGraphics.tint = 0x4169e1; // blue for fire rate
	}
	self.update = function () {
		self.y += self.speed;
		// Remove if off screen
		if (self.y > 2732 + 50) {
			self.destroy();
		}
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Game variables
var player;
var bullets = [];
var enemyBullets = [];
var enemies = [];
var powerUps = [];
var waveNumber = 1;
var enemiesInWave = 5 + waveNumber * 2;
var lastEnemySpawn = 0;
var enemySpawnRate = 1500; // 1.5 seconds between spawns
var waveDelay = 5000; // 5 seconds between waves
var gameActive = true;
var dragActive = false;
// Setup GUI
var scoreTxt = new Text2('0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(1, 0); // Right-aligned
LK.gui.topRight.addChild(scoreTxt);
scoreTxt.x = -50; // Add some padding from the right
scoreTxt.y = 50; // Add some padding from the top
var waveTxt = new Text2('WAVE 1', {
	size: 80,
	fill: 0xFFFFFF
});
waveTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(waveTxt);
waveTxt.y = 50;
// Initialize player
player = new Player();
player.x = 2048 / 2;
player.y = 2732 - 300;
player.updateHealthBar();
game.addChild(player);
// Start background music
LK.playMusic('bgMusic', {
	fade: {
		start: 0,
		end: 0.6,
		duration: 1000
	}
});
// Touch/mouse handling
var lastTapTime = 0;
game.down = function (x, y, obj) {
	if (!gameActive) {
		return;
	}
	var currentTime = Date.now();
	if (currentTime - lastTapTime < 300) {
		// Double-tap detected within 300ms
		player.speed = 20; // Resume player movement
	}
	lastTapTime = currentTime;
	player.shoot(); // Shoot when tapping
};
game.move = function (x, y, obj) {
	if (!gameActive || !dragActive || !player.visible) {
		return;
	}
	// Constrain player to game area
	if (x > 100 && x < 2048 - 100) {
		player.x = x;
	}
};
game.up = function (x, y, obj) {
	dragActive = false;
};
// Spawn enemies for current wave
function spawnWave() {
	if (waveNumber > 100) {
		gameActive = false;
		updateHighScore();
		LK.showYouWin();
		return;
	}
	enemiesInWave = 5 + waveNumber * 2; // More enemies per wave
	waveTxt.setText('WAVE ' + waveNumber);
	// Show wave notification
	waveTxt.alpha = 1;
	tween(waveTxt, {
		alpha: 0
	}, {
		duration: 2000,
		easing: tween.easeOut
	});
	// Slightly increase enemy spawn rate with each wave
	enemySpawnRate = Math.max(1000, 1500 - waveNumber * 50);
}
// Spawn a single enemy
function spawnEnemy() {
	var enemy = new Enemy();
	enemy.x = Math.random() * (2048 - 200) + 100; // Random position between 100 and (2048-100)
	enemy.y = -100; // Start above the screen
	enemy.updateHealthBar();
	// Increase enemy health every few waves
	if (waveNumber > 3) {
		enemy.health += Math.floor(waveNumber / 3);
		enemy.updateHealthBar();
	}
	// Increase enemy speed slightly with each wave
	enemy.speed += waveNumber * 0.1;
	game.addChild(enemy);
	enemies.push(enemy);
}
// Save the high score if needed
function updateHighScore() {
	var currentScore = LK.getScore();
	if (currentScore > storage.highScore) {
		storage.highScore = currentScore;
	}
}
// Main game update loop
game.update = function () {
	if (!gameActive) {
		return;
	}
	// Update score display
	scoreTxt.setText(LK.getScore());
	// Enemy spawning logic
	var now = Date.now();
	if (enemies.length < enemiesInWave && now - lastEnemySpawn > enemySpawnRate) {
		lastEnemySpawn = now;
		spawnEnemy();
	}
	// Wave transition logic
	if (enemies.length === 0 && enemiesInWave <= 0) {
		waveNumber++;
		if (waveNumber <= 100) {
			// Start next wave after delay
			LK.setTimeout(function () {
				spawnWave();
			}, waveDelay);
			enemiesInWave = 5 + waveNumber * 2; // Reset for next wave
		} else {
			gameActive = false;
			updateHighScore();
			LK.showYouWin();
		}
	}
	// Bullet collision detection
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		// Check collision with each enemy
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (bullet.intersects(enemy)) {
				// Damage enemy
				enemy.damage(bullet.damage);
				// Remove bullet
				bullet.destroy();
				bullets.splice(i, 1);
				// If enemy is destroyed, remove from array
				if (enemy.health <= 0) {
					enemies.splice(j, 1);
					enemiesInWave--;
				}
				break; // This bullet hit something, stop checking
			}
		}
	}
	// Enemy bullet collision with player
	if (player.visible) {
		for (var i = enemyBullets.length - 1; i >= 0; i--) {
			var bullet = enemyBullets[i];
			if (bullet.intersects(player)) {
				// Damage player
				player.damage(bullet.damage);
				// Remove bullet
				bullet.destroy();
				enemyBullets.splice(i, 1);
				// Check if game over
				if (player.health <= 0) {
					gameActive = false;
					updateHighScore();
				}
			}
			// Check collision with player bullets
			for (var j = bullets.length - 1; j >= 0; j--) {
				var playerBullet = bullets[j];
				if (bullet.intersects(playerBullet)) {
					// Destroy both bullets
					bullet.destroy();
					enemyBullets.splice(i, 1);
					playerBullet.destroy();
					bullets.splice(j, 1);
					break; // Stop checking this bullet
				}
			}
		}
		// Enemy collision with player
		for (var i = enemies.length - 1; i >= 0; i--) {
			var enemy = enemies[i];
			if (enemy.intersects(player)) {
				// Damage player
				player.damage(1);
				// Damage enemy
				enemy.damage(1);
				// If enemy is destroyed, remove from array
				if (enemy.health <= 0) {
					enemies.splice(i, 1);
					enemiesInWave--;
				}
				// Check if game over
				if (player.health <= 0) {
					gameActive = false;
					updateHighScore();
				}
			}
		}
		// Power-up collision with player
		for (var i = powerUps.length - 1; i >= 0; i--) {
			var powerUp = powerUps[i];
			if (powerUp.intersects(player)) {
				// Apply power-up effect
				if (powerUp.type === 0) {
					// Health power-up
					player.health = Math.min(player.maxHealth, player.health + 1);
					player.updateHealthBar();
				} else {
					// Fire rate power-up
					player.fireRate = Math.max(200, player.fireRate - 50);
					// Temporarily change player color to show power-up
					player.tint = 0x4169e1;
					LK.setTimeout(function () {
						player.tint = 0xffffff;
					}, 2000);
				}
				// Play power-up sound
				LK.getSound('powerUp').play();
				// Remove power-up
				powerUp.destroy();
				powerUps.splice(i, 1);
			}
		}
	}
	// Clean up arrays (remove destroyed objects)
	bullets = bullets.filter(function (bullet) {
		return bullet.parent !== null;
	});
	enemyBullets = enemyBullets.filter(function (bullet) {
		return bullet.parent !== null;
	});
	enemies = enemies.filter(function (enemy) {
		return enemy.parent !== null;
	});
	powerUps = powerUps.filter(function (powerUp) {
		return powerUp.parent !== null;
	});
	// Automatic fire if holding
	if (dragActive && player.visible && LK.ticks % 15 === 0) {
		player.shoot();
	}
};
// Start the first wave
spawnWave();

===================================================================
--- original.js
+++ change.js
@@ -454,8 +454,20 @@
 					gameActive = false;
 					updateHighScore();
 				}
 			}
+			// Check collision with player bullets
+			for (var j = bullets.length - 1; j >= 0; j--) {
+				var playerBullet = bullets[j];
+				if (bullet.intersects(playerBullet)) {
+					// Destroy both bullets
+					bullet.destroy();
+					enemyBullets.splice(i, 1);
+					playerBullet.destroy();
+					bullets.splice(j, 1);
+					break; // Stop checking this bullet
+				}
+			}
 		}
 		// Enemy collision with player
 		for (var i = enemies.length - 1; i >= 0; i--) {
 			var enemy = enemies[i];