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

/**** 
* Classes
****/ 
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.shootTimer = 0;
	self.shootInterval = (180 + Math.random() * 120) * 0.5;
	self.moveSpeed = 2;
	self.note = 0; // Musical note value
	self.update = function () {
		self.shootTimer++;
		if (self.shootTimer >= self.shootInterval) {
			self.shoot();
			self.shootTimer = 0;
			self.shootInterval = (180 + Math.random() * 120) * 0.5;
		}
	};
	self.shoot = function () {
		var bullet = new EnemyBullet();
		bullet.x = self.x;
		bullet.y = self.y + 20;
		enemyBullets.push(bullet);
		game.addChild(bullet);
	};
	self.takeDamage = function (damage) {
		self.health -= damage * rhythmMultiplier;
		if (self.health <= 0) {
			self.destroy();
			return true;
		}
		return false;
	};
	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 = 4;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.speed = 8;
	self.lives = 3;
	self.canShoot = true;
	self.shootCooldown = 0;
	self.update = function () {
		if (self.shootCooldown > 0) {
			self.shootCooldown--;
			if (self.shootCooldown <= 0) {
				self.canShoot = true;
			}
		}
		// Keep player within screen bounds
		if (self.x < 60) self.x = 60;
		if (self.x > 2048 - 60) self.x = 2048 - 60;
	};
	self.shoot = function () {
		if (!self.canShoot) return false;
		self.canShoot = false;
		self.shootCooldown = 15;
		var bullet = new PlayerBullet();
		bullet.x = self.x;
		bullet.y = self.y - 40;
		playerBullets.push(bullet);
		game.addChild(bullet);
		LK.getSound('shoot').play();
		// Check if shooting in rhythm
		var timeSinceLastBeat = LK.ticks * 16.67 % beatInterval;
		var rhythmWindow = beatInterval * 0.15;
		if (timeSinceLastBeat < rhythmWindow || timeSinceLastBeat > beatInterval - rhythmWindow) {
			rhythmMultiplier = Math.min(rhythmMultiplier + 0.1, 2.0);
			LK.getSound('rhythmBonus').play();
		} else {
			rhythmMultiplier = Math.max(rhythmMultiplier - 0.05, 1.0);
		}
		return true;
	};
	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 = -12;
	self.damage = 1;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000011
});

/**** 
* Game Code
****/ 
var player = game.addChild(new Player());
player.x = 1024;
player.y = 2600;
var playerBullets = [];
var enemyBullets = [];
var enemies = [];
var currentWave = 1;
var enemiesKilled = 0;
var totalEnemiesInWave = 0;
var waveStarted = false;
var waveDelay = 0;
var rhythmMultiplier = 1.0;
var beatInterval = 500; // milliseconds
var lastBeatTime = 0;
var enemyFormationX = 0;
var enemyFormationDirection = 1;
var enemyDropDistance = 60;
var shouldDropEnemies = false;
// UI Elements
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0, 0);
scoreTxt.x = 20;
scoreTxt.y = 20;
LK.gui.topLeft.addChild(scoreTxt);
var livesTxt = new Text2('Lives: 3', {
	size: 60,
	fill: 0xFFFFFF
});
livesTxt.anchor.set(1, 0);
livesTxt.x = -20;
livesTxt.y = 20;
LK.gui.topRight.addChild(livesTxt);
var waveTxt = new Text2('Wave: 1', {
	size: 60,
	fill: 0xFFFFFF
});
waveTxt.anchor.set(0.5, 0);
waveTxt.x = 0;
waveTxt.y = 20;
LK.gui.top.addChild(waveTxt);
var rhythmTxt = new Text2('Rhythm: 1.0x', {
	size: 50,
	fill: 0xFFFF00
});
rhythmTxt.anchor.set(0.5, 0);
rhythmTxt.x = 0;
rhythmTxt.y = 100;
LK.gui.top.addChild(rhythmTxt);
function createWave(waveNumber) {
	enemies = [];
	enemiesKilled = 0;
	var rows = 3 + Math.floor(waveNumber / 3);
	var cols = 8 + Math.floor(waveNumber / 2);
	totalEnemiesInWave = rows * cols;
	var startX = (2048 - cols * 100) / 2;
	var startY = 200;
	for (var row = 0; row < rows; row++) {
		for (var col = 0; col < cols; col++) {
			var enemy = new Enemy();
			enemy.x = startX + col * 100;
			enemy.y = startY + row * 80;
			enemy.note = (row * cols + col) % 12; // Assign musical notes
			enemies.push(enemy);
			game.addChild(enemy);
		}
	}
	enemyFormationX = 0;
	enemyFormationDirection = 1;
	waveStarted = true;
	// Increase tempo with each wave
	beatInterval = Math.max(300, 500 - waveNumber * 20);
}
function updateEnemyFormation() {
	if (enemies.length === 0) return;
	var moveDistance = 2 + Math.floor(currentWave / 3);
	var shouldMove = LK.ticks % Math.max(1, 30 - currentWave * 2) === 0;
	if (shouldMove) {
		if (shouldDropEnemies) {
			// Drop enemies down
			for (var i = 0; i < enemies.length; i++) {
				enemies[i].y += enemyDropDistance;
			}
			shouldDropEnemies = false;
		} else {
			// Move enemies horizontally
			var hitEdge = false;
			for (var i = 0; i < enemies.length; i++) {
				enemies[i].x += moveDistance * enemyFormationDirection;
				if (enemies[i].x <= 50 || enemies[i].x >= 1998) {
					hitEdge = true;
				}
			}
			if (hitEdge) {
				enemyFormationDirection *= -1;
				shouldDropEnemies = true;
			}
		}
	}
}
function checkCollisions() {
	// Player bullets vs enemies
	for (var i = playerBullets.length - 1; i >= 0; i--) {
		var bullet = playerBullets[i];
		var bulletHit = false;
		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);
					enemiesKilled++;
					var baseScore = 100 * Math.floor(rhythmMultiplier);
					LK.setScore(LK.getScore() + baseScore);
					LK.getSound('enemyHit').play();
					LK.effects.flashObject(enemy, 0xffffff, 200);
				}
				bullet.destroy();
				playerBullets.splice(i, 1);
				bulletHit = true;
				break;
			}
		}
		if (!bulletHit && bullet.y < -20) {
			bullet.destroy();
			playerBullets.splice(i, 1);
		}
	}
	// Enemy bullets vs player
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		var bullet = enemyBullets[i];
		if (bullet.intersects(player)) {
			player.lives--;
			bullet.destroy();
			enemyBullets.splice(i, 1);
			LK.getSound('playerHit').play();
			LK.effects.flashObject(player, 0xff0000, 500);
			if (player.lives <= 0) {
				LK.showGameOver();
				return;
			}
		} else if (bullet.y > 2732) {
			bullet.destroy();
			enemyBullets.splice(i, 1);
		}
	}
	// Check if enemies reached player
	for (var i = 0; i < enemies.length; i++) {
		if (enemies[i].y > 2500) {
			LK.showGameOver();
			return;
		}
	}
}
function updateUI() {
	scoreTxt.setText('Score: ' + LK.getScore());
	livesTxt.setText('Lives: ' + player.lives);
	waveTxt.setText('Wave: ' + currentWave);
	rhythmTxt.setText('Rhythm: ' + rhythmMultiplier.toFixed(1) + 'x');
	// Color rhythm multiplier text based on value
	if (rhythmMultiplier > 1.5) {
		rhythmTxt.tint = 0x00ff00;
	} else if (rhythmMultiplier > 1.2) {
		rhythmTxt.tint = 0xffff00;
	} else {
		rhythmTxt.tint = 0xffffff;
	}
}
// Touch controls
var dragStartX = 0;
var isDragging = false;
var lastTouchTime = 0;
game.down = function (x, y, obj) {
	dragStartX = x;
	isDragging = true;
	var currentTime = Date.now();
	if (currentTime - lastTouchTime < 300) {
		// Double tap to shoot
		player.shoot();
	}
	lastTouchTime = currentTime;
};
game.move = function (x, y, obj) {
	if (isDragging) {
		var deltaX = x - dragStartX;
		player.x += deltaX * 0.5;
		dragStartX = x;
	}
};
game.up = function (x, y, obj) {
	isDragging = false;
	player.shoot();
};
// Start background music
LK.playMusic('bgmusic');
// Initialize first wave
createWave(currentWave);
game.update = function () {
	updateEnemyFormation();
	checkCollisions();
	updateUI();
	// Gradually decay rhythm multiplier
	rhythmMultiplier = Math.max(rhythmMultiplier - 0.001, 1.0);
	// Check if wave is complete
	if (enemies.length === 0 && waveStarted) {
		waveStarted = false;
		waveDelay = 120; // 2 second delay
		currentWave++;
		if (currentWave > 10) {
			LK.showYouWin();
			return;
		}
	}
	// Start next wave after delay
	if (!waveStarted && waveDelay > 0) {
		waveDelay--;
		if (waveDelay <= 0) {
			createWave(currentWave);
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -13,17 +13,17 @@
 		anchorY: 0.5
 	});
 	self.health = 1;
 	self.shootTimer = 0;
-	self.shootInterval = (180 + Math.random() * 120) * 0.25;
+	self.shootInterval = (180 + Math.random() * 120) * 0.5;
 	self.moveSpeed = 2;
 	self.note = 0; // Musical note value
 	self.update = function () {
 		self.shootTimer++;
 		if (self.shootTimer >= self.shootInterval) {
 			self.shoot();
 			self.shootTimer = 0;
-			self.shootInterval = (180 + Math.random() * 120) * 0.25;
+			self.shootInterval = (180 + Math.random() * 120) * 0.5;
 		}
 	};
 	self.shoot = function () {
 		var bullet = new EnemyBullet();