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

/**** 
* Classes
****/ 
var Drop = Container.expand(function (dropType) {
	var self = Container.call(this);
	self.dropType = dropType;
	var dropGraphics = self.attachAsset(dropType, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2;
	self.update = function () {
		self.y += self.speed;
	};
	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.shootTimer = 0;
	var waveReduction = (currentWave - 1) * 60; // Reduce by 1 second (60 frames) per wave
	var minInterval = Math.max(60, 360 - waveReduction); // Minimum 1 second interval
	var maxInterval = Math.max(120, 600 - waveReduction); // Minimum 2 second max interval
	self.shootInterval = minInterval + Math.random() * (maxInterval - minInterval); // Dynamic interval based on wave level
	self.moveSpeed = 2;
	self.note = 0; // Musical note value
	self.update = function () {
		self.shootTimer++;
		if (self.shootTimer >= self.shootInterval) {
			self.shoot();
			self.shootTimer = 0;
			var waveReduction = (currentWave - 1) * 60; // Reduce by 1 second (60 frames) per wave
			var minInterval = Math.max(60, 360 - waveReduction); // Minimum 1 second interval
			var maxInterval = Math.max(120, 600 - waveReduction); // Minimum 2 second max interval
			self.shootInterval = minInterval + Math.random() * (maxInterval - minInterval); // Dynamic interval based on wave level
		}
		// Add subtle horizontal sway movement for more fluid feel
		if (LK.ticks % 180 === 0) {
			var sideMovement = (Math.random() - 0.5) * 60;
			var targetX = Math.max(50, Math.min(1998, self.x + sideMovement));
			tween(self, {
				x: targetX
			}, {
				duration: 1500 + Math.random() * 1000,
				easing: tween.easeInOut
			});
		}
	};
	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) {
			// Drop system - chance to drop items
			var dropChance = Math.random() * 100;
			if (dropChance < 2) {
				// 2% chance for powerup1
				var drop = new Drop('powerup1');
				drop.x = self.x;
				drop.y = self.y;
				drops.push(drop);
				game.addChild(drop);
			} else if (dropChance < 3) {
				// 1% chance for powerup2
				var drop = new Drop('powerup2');
				drop.x = self.x;
				drop.y = self.y;
				drops.push(drop);
				game.addChild(drop);
			} else if (dropChance < 4) {
				// 1% chance for lifeup
				var drop = new Drop('lifeup');
				drop.x = self.x;
				drop.y = self.y;
				drops.push(drop);
				game.addChild(drop);
			}
			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;
		// Determine number of bullets based on powerup
		var bulletCount = 1;
		if (currentPowerup === 'powerup1') {
			bulletCount = 3;
		}
		// Create bullets
		for (var i = 0; i < bulletCount; i++) {
			var bullet = new PlayerBullet(currentPowerup);
			if (bulletCount === 1) {
				bullet.x = self.x;
			} else {
				bullet.x = self.x + (i - 1) * 30; // Spread bullets
			}
			bullet.y = self.y - 40;
			playerBullets.push(bullet);
			game.addChild(bullet);
		}
		LK.getSound('shoot').play();
		// 1 in 20 chance to play rhythmBonus sound
		if (Math.random() < 0.05) {
			LK.getSound('rhythmBonus').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);
		} else {
			rhythmMultiplier = Math.max(rhythmMultiplier - 0.05, 1.0);
		}
		return true;
	};
	return self;
});
var PlayerBullet = Container.expand(function (bulletType) {
	var self = Container.call(this);
	self.bulletType = bulletType || 'normal';
	var assetName = 'playerBullet';
	if (self.bulletType === 'powerup1') {
		assetName = 'powebullet1';
	} else if (self.bulletType === 'powerup2') {
		assetName = 'powerbullet2';
	}
	var bulletGraphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -12;
	self.damage = 1;
	self.piercing = self.bulletType === 'powerup2';
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var SuperBoss = Container.expand(function () {
	var self = Container.call(this);
	var bossGraphics = self.attachAsset('superboss', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 3,
		scaleY: 3,
		tint: 0xff0000
	});
	self.health = 100;
	self.maxHealth = 100;
	self.shootTimer = 0;
	var waveReduction = (currentWave - 1) * 60; // Reduce by 1 second (60 frames) per wave
	var minInterval = Math.max(60, 180 - waveReduction); // Minimum 1 second interval
	var maxInterval = Math.max(120, 480 - waveReduction); // Minimum 2 second max interval
	self.shootInterval = minInterval + Math.random() * (maxInterval - minInterval); // Dynamic interval based on wave level
	self.moveSpeed = 1;
	self.moveDirection = 1;
	self.update = function () {
		// Boss movement - side to side
		self.x += self.moveSpeed * self.moveDirection;
		if (self.x <= 200 || self.x >= 1848) {
			self.moveDirection *= -1;
		}
		// Boss shooting
		self.shootTimer++;
		if (self.shootTimer >= self.shootInterval) {
			self.shoot();
			self.shootTimer = 0;
			var waveReduction = (currentWave - 1) * 60; // Reduce by 1 second (60 frames) per wave
			var minInterval = Math.max(60, 180 - waveReduction); // Minimum 1 second interval
			var maxInterval = Math.max(120, 480 - waveReduction); // Minimum 2 second max interval
			self.shootInterval = minInterval + Math.random() * (maxInterval - minInterval); // Dynamic interval based on wave level
		}
		// Update boss color based on health
		var healthPercent = self.health / self.maxHealth;
		if (healthPercent > 0.6) {
			bossGraphics.tint = 0xff0000; // Red
		} else if (healthPercent > 0.3) {
			bossGraphics.tint = 0xff8800; // Orange
		} else {
			bossGraphics.tint = 0xffff00; // Yellow
		}
	};
	self.shoot = function () {
		// Shoot multiple bullets in different directions
		for (var i = -2; i <= 2; i++) {
			var bullet = new EnemyBullet();
			bullet.x = self.x + i * 50;
			bullet.y = self.y + 50;
			bullet.speed = 3 + Math.abs(i) * 0.5;
			enemyBullets.push(bullet);
			game.addChild(bullet);
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage * rhythmMultiplier;
		LK.effects.flashObject(self, 0xffffff, 100);
		if (self.health <= 0) {
			self.destroy();
			return true;
		}
		return false;
	};
	return self;
});

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

/**** 
* Game Code
****/ 
var gameStarted = false;
var startButton = game.addChild(LK.getAsset('start', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 4,
	scaleY: 4
}));
startButton.x = 1024; // Center horizontally
startButton.y = 1366; // Center vertically
var player = game.addChild(new Player());
player.x = 1024;
player.y = 2600;
player.visible = false; // Hide player until game starts
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;
var superBoss = null;
var bossActive = false;
var bossDefeated = false;
var drops = [];
var currentPowerup = null;
// Sound management for bonus sounds
var currentBonusSoundName = null;
var currentBonusSoundTimeout = null;
var bonusSounds = ['bonusmusic', 'bonusmusic2', 'bonusmusic3', 'bonusmusic4', 'bonusmusic5'];
function playRandomBonusSound() {
	// Only play if no bonus sound is currently playing
	if (currentBonusSoundName === null) {
		var randomSoundName = bonusSounds[Math.floor(Math.random() * bonusSounds.length)];
		var randomSound = LK.getSound(randomSoundName);
		currentBonusSoundName = randomSoundName;
		randomSound.play();
		// Clear any existing timeout
		if (currentBonusSoundTimeout !== null) {
			LK.clearTimeout(currentBonusSoundTimeout);
		}
		// Set a longer timeout to ensure sound finishes before allowing new ones
		// Using 2500ms to be safe that the sound completes
		currentBonusSoundTimeout = LK.setTimeout(function () {
			currentBonusSoundName = null;
			currentBonusSoundTimeout = null;
		}, 2500);
	}
}
// 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 = 4 + Math.floor(currentWave / 2);
	var shouldMove = LK.ticks % Math.max(1, 20 - currentWave * 1.5) === 0;
	if (shouldMove) {
		if (shouldDropEnemies) {
			// Drop enemies down
			for (var i = 0; i < enemies.length; i++) {
				enemies[i].y += enemyDropDistance;
			}
			shouldDropEnemies = false;
		} else {
			// Move all enemies horizontally in synchronized formation using tween
			var hitEdge = false;
			var targetDirection = moveDistance * enemyFormationDirection;
			// Check if any enemy would hit the edge
			for (var i = 0; i < enemies.length; i++) {
				var newX = enemies[i].x + targetDirection;
				if (newX <= 50 || newX >= 1998) {
					hitEdge = true;
					break;
				}
			}
			// Move all enemies together with synchronized tween animation
			for (var i = 0; i < enemies.length; i++) {
				var enemy = enemies[i];
				tween(enemy, {
					x: enemy.x + targetDirection
				}, {
					duration: 300,
					easing: tween.easeInOut
				});
			}
			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();
					// Play random bonus sound effect with 15% chance
					if (Math.random() < 0.15) {
						playRandomBonusSound();
					}
					LK.effects.flashObject(enemy, 0xffffff, 200);
				}
				if (!bullet.piercing) {
					bullet.destroy();
					playerBullets.splice(i, 1);
					bulletHit = true;
					break;
				} else {
					bulletHit = false; // Allow piercing bullets to continue
				}
			}
		}
		// Player bullets vs super boss
		if (!bulletHit && superBoss && bullet.intersects(superBoss)) {
			if (superBoss.takeDamage(bullet.damage)) {
				superBoss = null;
				bossActive = false;
				bossDefeated = true;
				var bossScore = 5000 * Math.floor(rhythmMultiplier);
				LK.setScore(LK.getScore() + bossScore);
				LK.getSound('enemyHit').play();
				// Play random bonus sound effect with 15% chance
				if (Math.random() < 0.15) {
					playRandomBonusSound();
				}
			}
			if (!bullet.piercing) {
				bullet.destroy();
				playerBullets.splice(i, 1);
				bulletHit = true;
			}
		}
		if (!bulletHit && bullet.y < -20) {
			bullet.destroy();
			playerBullets.splice(i, 1);
		}
	}
	// Player vs drops
	for (var i = drops.length - 1; i >= 0; i--) {
		var drop = drops[i];
		if (drop.intersects(player)) {
			if (drop.dropType === 'lifeup') {
				player.lives = Math.min(player.lives + 1, 5);
			} else {
				currentPowerup = drop.dropType;
			}
			drop.destroy();
			drops.splice(i, 1);
		} else if (drop.y > 2732) {
			drop.destroy();
			drops.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--;
			currentPowerup = null; // Reset powerup when player loses a life
			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;
		}
	}
	// Check if super boss reached player
	if (superBoss && superBoss.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) {
	if (!gameStarted) {
		gameStarted = true;
		startButton.visible = false; // Hide start button
		player.visible = true; // Show player when game starts
		// Start background music
		LK.playMusic('bgmusic');
		// Initialize first wave
		createWave(currentWave);
		return;
	}
	isDragging = true;
	// Stop any existing tween for immediate response
	tween.stop(player, {
		x: true
	});
	// Quick tween to clicked position for responsive feel
	tween(player, {
		x: x
	}, {
		duration: 100,
		easing: tween.easeOut
	});
	var currentTime = Date.now();
	if (currentTime - lastTouchTime < 300) {
		// Double tap to shoot
		player.shoot();
	}
	lastTouchTime = currentTime;
};
game.move = function (x, y, obj) {
	if (!gameStarted) return;
	// Stop any existing tween to prevent conflicts
	tween.stop(player, {
		x: true
	});
	// Calculate distance for dynamic duration
	var distance = Math.abs(x - player.x);
	// Dynamic duration based on distance - closer targets move faster
	var duration = Math.min(Math.max(distance * 0.8, 50), 200);
	// Use smooth easing for natural movement
	tween(player, {
		x: x
	}, {
		duration: duration,
		easing: tween.easeOut
	});
};
game.up = function (x, y, obj) {
	if (!gameStarted) return;
	isDragging = false;
	// Shoot on mouse up for better control
	player.shoot();
};
game.update = function () {
	if (!gameStarted) return;
	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 && !bossActive) {
		waveStarted = false;
		bossActive = true;
		bossDefeated = false;
		// Spawn super boss
		superBoss = new SuperBoss();
		superBoss.x = 1024;
		superBoss.y = 300;
		game.addChild(superBoss);
	}
	// Check if boss is defeated
	if (bossDefeated && !waveStarted) {
		waveDelay = 120; // 2 second delay
		currentWave++;
		bossDefeated = false;
		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
@@ -265,8 +265,16 @@
 /**** 
 * Game Code
 ****/ 
 var gameStarted = false;
+var startButton = game.addChild(LK.getAsset('start', {
+	anchorX: 0.5,
+	anchorY: 0.5,
+	scaleX: 4,
+	scaleY: 4
+}));
+startButton.x = 1024; // Center horizontally
+startButton.y = 1366; // Center vertically
 var player = game.addChild(new Player());
 player.x = 1024;
 player.y = 2600;
 player.visible = false; // Hide player until game starts
@@ -533,8 +541,9 @@
 var lastTouchTime = 0;
 game.down = function (x, y, obj) {
 	if (!gameStarted) {
 		gameStarted = true;
+		startButton.visible = false; // Hide start button
 		player.visible = true; // Show player when game starts
 		// Start background music
 		LK.playMusic('bgmusic');
 		// Initialize first wave