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

/**** 
* Classes
****/ 
var Asteroid = Container.expand(function () {
	var self = Container.call(this);
	var asteroidGraphics = self.attachAsset('asteroid', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var size = 0.5 + Math.random() * 1.5; // Random size between 0.5 and 2.0
	asteroidGraphics.scale.set(size, size);
	self.speed = 2 + Math.random() * 4; // Speed between 2 and 6
	self.rotationSpeed = (Math.random() - 0.5) * 0.1; // Random rotation
	self.update = function () {
		self.y += self.speed;
		self.rotation += self.rotationSpeed;
	};
	return self;
});
var Bullet = Container.expand(function (isEnemy) {
	var self = Container.call(this);
	self.isEnemy = isEnemy || false;
	var assetId = self.isEnemy ? 'enemyBullet' : 'bullet';
	var bulletGraphics = self.attachAsset(assetId, {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: self.isEnemy ? 1 : 3,
		scaleY: self.isEnemy ? 1 : 3
	});
	self.speed = self.isEnemy ? 8 : -15;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var EnemyShip = Container.expand(function (type) {
	var self = Container.call(this);
	self.type = type || 'basic';
	var shipGraphics = self.attachAsset('enemyShip', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Configure enemy based on type
	switch (self.type) {
		case 'basic':
			self.health = 1;
			self.speed = 3;
			self.points = 10;
			self.fireRate = 0; // Doesn't shoot
			break;
		case 'shooter':
			self.health = 2;
			self.speed = 2;
			self.points = 20;
			self.fireRate = 120; // Frames between shots
			shipGraphics.tint = 0x9b59b6; // Purple
			break;
		case 'elite':
			self.health = 3;
			self.speed = 4;
			self.points = 30;
			self.fireRate = 90; // Frames between shots
			shipGraphics.tint = 0xf39c12; // Orange
			break;
	}
	self.fireCounter = Math.floor(Math.random() * self.fireRate);
	self.movePattern = Math.floor(Math.random() * 3); // 0: straight, 1: zigzag, 2: sine
	self.patternStep = 0;
	self.initialX = 0;
	self.canFire = function () {
		if (self.fireRate === 0) {
			return false;
		}
		if (self.fireCounter <= 0) {
			self.fireCounter = self.fireRate;
			return true;
		}
		return false;
	};
	self.hit = function () {
		self.health--;
		if (self.health <= 0) {
			return true; // Enemy destroyed
		}
		LK.effects.flashObject(self, 0xffffff, 200);
		return false; // Enemy still alive
	};
	self.update = function () {
		// Move downward
		self.y += self.speed;
		// Apply movement pattern
		if (self.movePattern === 1) {
			// Zigzag
			if (self.patternStep < 60) {
				self.x += 1;
			} else if (self.patternStep < 120) {
				self.x -= 1;
			} else {
				self.patternStep = 0;
			}
			self.patternStep++;
		} else if (self.movePattern === 2) {
			// Sine wave
			if (self.initialX === 0) {
				self.initialX = self.x;
			}
			self.x = self.initialX + Math.sin(self.patternStep * 0.05) * 100;
			self.patternStep++;
		}
		// Update fire counter
		if (self.fireCounter > 0) {
			self.fireCounter--;
		}
	};
	return self;
});
var PlayerShip = Container.expand(function () {
	var self = Container.call(this);
	var shipGraphics = self.attachAsset('playerShip', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.shield = self.attachAsset('shield', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0
	});
	self.speed = 12;
	self.fireRate = 20; // Frames between shots
	self.fireCounter = 0;
	self.hasShield = false;
	self.hasDoubleFire = false;
	self.health = 3;
	self.activateShield = function () {
		self.hasShield = true;
		self.shield.alpha = 0.4;
		// Shield expires after 10 seconds
		LK.setTimeout(function () {
			self.hasShield = false;
			tween(self.shield, {
				alpha: 0
			}, {
				duration: 500
			});
		}, 10000);
	};
	self.hit = function () {
		if (self.hasShield) {
			self.hasShield = false;
			tween(self.shield, {
				alpha: 0
			}, {
				duration: 500
			});
			return false; // No damage taken
		} else {
			self.health--;
			LK.getSound('playerHit').play();
			LK.effects.flashObject(self, 0xff0000, 500);
			return true; // Damage taken
		}
	};
	self.activateDoubleFire = function () {
		self.hasDoubleFire = true;
		// Double fire expires after 8 seconds
		LK.setTimeout(function () {
			self.hasDoubleFire = false;
		}, 8000);
	};
	self.canFire = function () {
		if (self.fireCounter <= 0) {
			self.fireCounter = self.fireRate;
			return true;
		}
		return false;
	};
	self.update = function () {
		if (self.fireCounter > 0) {
			self.fireCounter--;
		}
	};
	return self;
});
var PowerUp = Container.expand(function (type) {
	var self = Container.call(this);
	self.type = type || Math.random() < 0.5 ? 'shield' : 'doubleFire';
	var powerUpGraphics = self.attachAsset('powerUp', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set color based on type
	if (self.type === 'shield') {
		powerUpGraphics.tint = 0x3498db; // Blue
	} else if (self.type === 'doubleFire') {
		powerUpGraphics.tint = 0xf1c40f; // Yellow
	}
	self.speed = 3;
	self.pulseDirection = 1;
	self.pulseStep = 0;
	self.update = function () {
		self.y += self.speed;
		// Pulse animation
		self.pulseStep += 0.05 * self.pulseDirection;
		if (self.pulseStep >= 1) {
			self.pulseDirection = -1;
		} else if (self.pulseStep <= 0) {
			self.pulseDirection = 1;
		}
		powerUpGraphics.alpha = 0.7 + self.pulseStep * 0.3;
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Game state
var gameActive = true;
var score = 0;
var wave = 1;
var enemiesDefeated = 0;
var enemiesRequired = 10; // Enemies to defeat to advance to next wave
// Game elements
var player;
var bullets = [];
var enemyBullets = [];
var enemies = [];
var asteroids = [];
var powerUps = [];
// Background stars
var stars = [];
var starCount = 50;
// Game dimensions
var gameWidth = 2048;
var gameHeight = 2732;
var playerBoundaryLeft = 50;
var playerBoundaryRight = gameWidth - 50;
var playerBoundaryTop = 100;
var playerBoundaryBottom = gameHeight - 200;
// UI elements
var scoreTxt;
var waveTxt;
var healthTxt;
// Spawn timers
var enemySpawnTimer;
var asteroidSpawnTimer;
var powerUpSpawnTimer;
// Initialize player
function initPlayer() {
	player = new PlayerShip();
	player.x = gameWidth / 2;
	player.y = gameHeight - 300;
	game.addChild(player);
}
// Initialize UI
function initUI() {
	// Wave text
	waveTxt = new Text2('Wave: 1', {
		size: 60,
		fill: 0xFFFFFF
	});
	waveTxt.anchor.set(0.5, 0);
	LK.gui.top.addChild(waveTxt);
	// Score text
	scoreTxt = new Text2('Score: 0', {
		size: 60,
		fill: 0xFFFFFF
	});
	scoreTxt.anchor.set(0.5, 0);
	scoreTxt.y = 70; // Position below the wave text
	LK.gui.top.addChild(scoreTxt);
	// Health text
	healthTxt = new Text2('❤️❤️❤️', {
		size: 60,
		fill: 0xFFFFFF
	});
	healthTxt.anchor.set(0.5, 0);
	healthTxt.y = 140; // Position below the score text
	LK.gui.top.addChild(healthTxt);
}
// Initialize stars background
function initStars() {
	for (var i = 0; i < starCount; i++) {
		var star = LK.getAsset('asteroid', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 0.1 + Math.random() * 0.1,
			scaleY: 0.1 + Math.random() * 0.1,
			alpha: 0.3 + Math.random() * 0.5
		});
		star.x = Math.random() * gameWidth;
		star.y = Math.random() * gameHeight;
		star.speed = 0.5 + Math.random() * 1.5;
		game.addChild(star);
		stars.push(star);
	}
}
// Spawn timers
function initSpawnTimers() {
	// Enemy spawn timer (adjusted by wave)
	enemySpawnTimer = LK.setInterval(function () {
		spawnEnemy();
	}, 2000 - (wave * 100 > 1500 ? 1500 : wave * 100));
	// Asteroid spawn timer
	asteroidSpawnTimer = LK.setInterval(function () {
		spawnAsteroid();
	}, 3000);
	// Power-up spawn timer
	powerUpSpawnTimer = LK.setInterval(function () {
		if (Math.random() < 0.3) {
			// 30% chance to spawn power-up
			spawnPowerUp();
		}
	}, 10000);
}
// Spawn an enemy
function spawnEnemy() {
	if (!gameActive) {
		return;
	}
	var enemyType = 'basic';
	var rand = Math.random();
	// Adjust enemy type probability based on wave
	if (wave >= 3) {
		if (rand < 0.3) {
			enemyType = 'shooter';
		} else if (wave >= 5 && rand < 0.5) {
			enemyType = 'elite';
		}
	}
	var enemy = new EnemyShip(enemyType);
	enemy.x = 100 + Math.random() * (gameWidth - 200);
	enemy.y = -100;
	game.addChild(enemy);
	enemies.push(enemy);
}
// Spawn an asteroid
function spawnAsteroid() {
	if (!gameActive) {
		return;
	}
	var asteroid = new Asteroid();
	asteroid.x = Math.random() * gameWidth;
	asteroid.y = -100;
	game.addChild(asteroid);
	asteroids.push(asteroid);
}
// Spawn a power-up
function spawnPowerUp() {
	if (!gameActive) {
		return;
	}
	var powerUp = new PowerUp();
	powerUp.x = 100 + Math.random() * (gameWidth - 200);
	powerUp.y = -100;
	game.addChild(powerUp);
	powerUps.push(powerUp);
}
// Fire player bullets
function firePlayerBullet() {
	if (!player.canFire() || !gameActive) {
		return;
	}
	LK.getSound('playerShoot').play();
	if (player.hasDoubleFire) {
		// Double fire - two bullets side by side
		var bullet1 = new Bullet();
		bullet1.x = player.x - 20;
		bullet1.y = player.y - 30;
		game.addChild(bullet1);
		bullets.push(bullet1);
		var bullet2 = new Bullet();
		bullet2.x = player.x + 20;
		bullet2.y = player.y - 30;
		game.addChild(bullet2);
		bullets.push(bullet2);
	} else {
		// Normal fire - single bullet
		var bullet = new Bullet();
		bullet.x = player.x;
		bullet.y = player.y - 30;
		game.addChild(bullet);
		bullets.push(bullet);
	}
}
// Fire enemy bullet
function fireEnemyBullet(enemy) {
	if (!gameActive) {
		return;
	}
	var bullet = new Bullet(true);
	bullet.x = enemy.x;
	bullet.y = enemy.y + 40;
	game.addChild(bullet);
	enemyBullets.push(bullet);
	LK.getSound('enemyShoot').play();
}
// Handle collision between two game objects
function checkCollision(obj1, obj2) {
	return obj1.intersects(obj2);
}
// Handle player movement
function movePlayer(x, y) {
	if (!gameActive || !player) {
		return;
	}
	// Keep player within boundaries
	if (x < playerBoundaryLeft) {
		x = playerBoundaryLeft;
	}
	if (x > playerBoundaryRight) {
		x = playerBoundaryRight;
	}
	// Only change x position, keep y position fixed
	player.x = x;
	// Do not change y position anymore
}
// Update UI
function updateUI() {
	scoreTxt.setText('Score: ' + score);
	waveTxt.setText('Wave: ' + wave);
	// Display health as heart emojis
	var hearts = '';
	for (var i = 0; i < player.health; i++) {
		hearts += '❤️';
	}
	healthTxt.setText(hearts);
}
// Check if wave is complete
function checkWaveProgress() {
	if (enemiesDefeated >= enemiesRequired) {
		wave++;
		enemiesDefeated = 0;
		enemiesRequired = Math.min(10 + wave * 5, 50); // Increase required enemies, max 50
		waveTxt.setText('Wave: ' + wave);
		// Reset spawn timers with new rates
		LK.clearInterval(enemySpawnTimer);
		enemySpawnTimer = LK.setInterval(function () {
			spawnEnemy();
		}, Math.max(2000 - wave * 100, 500)); // Minimum 500ms
	}
}
// Game over check
function checkGameOver() {
	if (player.health <= 0) {
		gameActive = false;
		// Check for high score
		if (score > storage.highScore) {
			storage.highScore = score;
		}
		// Show game over screen
		LK.setScore(score);
		LK.showGameOver();
	}
}
// Initialize game
function initGame() {
	// Set background color
	game.setBackgroundColor(0x0a0a2a); // Dark blue space color
	// Reset game state
	gameActive = true;
	score = 0;
	wave = 1;
	enemiesDefeated = 0;
	enemiesRequired = 10;
	LK.setScore(0);
	// Initialize game elements
	initPlayer();
	initUI();
	initStars();
	initSpawnTimers();
	// Play background music
	LK.playMusic('gameMusic', {
		fade: {
			start: 0,
			end: 0.7,
			duration: 1000
		}
	});
}
// Start the game
initGame();
// Game touch controls
var isDragging = false;
game.down = function (x, y) {
	isDragging = true;
	movePlayer(x, y);
	// Fire a bullet when player touches the screen
	firePlayerBullet();
};
game.up = function () {
	isDragging = false;
};
game.move = function (x, y) {
	if (isDragging) {
		movePlayer(x, y);
	}
};
// Game update loop
game.update = function () {
	if (!gameActive) {
		return;
	}
	// Update player
	if (player) {
		player.update();
	}
	// Update stars
	for (var i = 0; i < stars.length; i++) {
		stars[i].y += stars[i].speed;
		// Reset star when it goes off-screen
		if (stars[i].y > gameHeight) {
			stars[i].y = -10;
			stars[i].x = Math.random() * gameWidth;
		}
	}
	// Update player bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		bullet.update();
		// Remove bullets that go off-screen
		if (bullet.y < -50) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Check bullet collisions with enemies
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (checkCollision(bullet, enemy)) {
				// Enemy hit
				if (enemy.hit()) {
					// Enemy destroyed
					score += enemy.points;
					LK.setScore(score);
					enemiesDefeated++;
					LK.getSound('explosion').play();
					LK.effects.flashObject(enemy, 0xffffff, 100);
					enemy.destroy();
					enemies.splice(j, 1);
				}
				// Remove bullet
				bullet.destroy();
				bullets.splice(i, 1);
				break;
			}
		}
		// Check bullet collisions with asteroids
		if (bullets[i]) {
			// Make sure bullet wasn't removed in enemy collision check
			for (var j = asteroids.length - 1; j >= 0; j--) {
				var asteroid = asteroids[j];
				if (checkCollision(bullet, asteroid)) {
					// Asteroid destroyed
					score += 5;
					LK.setScore(score);
					LK.getSound('explosion').play();
					LK.effects.flashObject(asteroid, 0xffffff, 100);
					asteroid.destroy();
					asteroids.splice(j, 1);
					// Remove bullet
					bullet.destroy();
					bullets.splice(i, 1);
					break;
				}
			}
		}
	}
	// Update enemy bullets
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		var bullet = enemyBullets[i];
		bullet.update();
		// Remove bullets that go off-screen
		if (bullet.y > gameHeight + 50) {
			bullet.destroy();
			enemyBullets.splice(i, 1);
			continue;
		}
		// Check bullet collisions with player
		if (player && checkCollision(bullet, player)) {
			if (player.hit()) {
				// Player damaged, check game over
				checkGameOver();
			}
			// Remove bullet
			bullet.destroy();
			enemyBullets.splice(i, 1);
		}
	}
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		var enemy = enemies[i];
		enemy.update();
		// Reduce health if enemies reach the bottom
		if (enemy.y > gameHeight - 50) {
			player.health--;
			updateUI();
			checkGameOver();
			LK.getSound('playerHit').play();
			LK.effects.flashObject(player, 0xff0000, 500);
			enemy.destroy();
			enemies.splice(i, 1);
			continue;
		}
		// Remove enemies that go off-screen
		if (enemy.y > gameHeight + 100) {
			enemy.destroy();
			enemies.splice(i, 1);
			continue;
		}
		// Fire enemy bullets
		if (enemy.canFire()) {
			fireEnemyBullet(enemy);
		}
		// Check collisions with player
		if (player && checkCollision(enemy, player)) {
			if (player.hit()) {
				// Player damaged, check game over
				checkGameOver();
			}
			// Remove enemy
			enemy.destroy();
			enemies.splice(i, 1);
			// Add to score and enemy count
			score += enemy.points;
			LK.setScore(score);
			enemiesDefeated++;
			LK.getSound('explosion').play();
			continue;
		}
	}
	// Update asteroids
	for (var i = asteroids.length - 1; i >= 0; i--) {
		var asteroid = asteroids[i];
		asteroid.update();
		// Reduce health if asteroids reach the bottom
		if (asteroid.y > gameHeight - 50) {
			player.health--;
			updateUI();
			checkGameOver();
			LK.getSound('playerHit').play();
			LK.effects.flashObject(player, 0xff0000, 500);
			asteroid.destroy();
			asteroids.splice(i, 1);
			continue;
		}
		// Remove asteroids that go off-screen
		if (asteroid.y > gameHeight + 100) {
			asteroid.destroy();
			asteroids.splice(i, 1);
			continue;
		}
		// Check collisions with player
		if (player && checkCollision(asteroid, player)) {
			if (player.hit()) {
				// Player damaged, check game over
				checkGameOver();
			}
			// Remove asteroid
			asteroid.destroy();
			asteroids.splice(i, 1);
			continue;
		}
	}
	// Update power-ups
	for (var i = powerUps.length - 1; i >= 0; i--) {
		var powerUp = powerUps[i];
		powerUp.update();
		// Remove power-ups that go off-screen
		if (powerUp.y > gameHeight + 100) {
			powerUp.destroy();
			powerUps.splice(i, 1);
			continue;
		}
		// Check collisions with player
		if (player && checkCollision(powerUp, player)) {
			// Apply power-up effect
			if (powerUp.type === 'shield') {
				player.activateShield();
			} else if (powerUp.type === 'doubleFire') {
				player.activateDoubleFire();
			}
			LK.getSound('powerUpCollect').play();
			// Remove power-up
			powerUp.destroy();
			powerUps.splice(i, 1);
		}
	}
	// Auto-fire if player is dragging (every 0.3 seconds)
	if (isDragging && LK.ticks % 18 === 0) {
		firePlayerBullet();
	}
	// Update UI
	updateUI();
	// Check wave progress
	checkWaveProgress();
};

===================================================================
--- original.js
+++ change.js
@@ -605,17 +605,18 @@
 	// Update enemies
 	for (var i = enemies.length - 1; i >= 0; i--) {
 		var enemy = enemies[i];
 		enemy.update();
-		// End game if enemies reach the bottom
+		// Reduce health if enemies reach the bottom
 		if (enemy.y > gameHeight - 50) {
-			gameActive = false;
-			if (score > storage.highScore) {
-				storage.highScore = score;
-			}
-			LK.setScore(score);
-			LK.showGameOver();
-			return;
+			player.health--;
+			updateUI();
+			checkGameOver();
+			LK.getSound('playerHit').play();
+			LK.effects.flashObject(player, 0xff0000, 500);
+			enemy.destroy();
+			enemies.splice(i, 1);
+			continue;
 		}
 		// Remove enemies that go off-screen
 		if (enemy.y > gameHeight + 100) {
 			enemy.destroy();
@@ -646,17 +647,18 @@
 	// Update asteroids
 	for (var i = asteroids.length - 1; i >= 0; i--) {
 		var asteroid = asteroids[i];
 		asteroid.update();
-		// End game if asteroids reach the bottom
+		// Reduce health if asteroids reach the bottom
 		if (asteroid.y > gameHeight - 50) {
-			gameActive = false;
-			if (score > storage.highScore) {
-				storage.highScore = score;
-			}
-			LK.setScore(score);
-			LK.showGameOver();
-			return;
+			player.health--;
+			updateUI();
+			checkGameOver();
+			LK.getSound('playerHit').play();
+			LK.effects.flashObject(player, 0xff0000, 500);
+			asteroid.destroy();
+			asteroids.splice(i, 1);
+			continue;
 		}
 		// Remove asteroids that go off-screen
 		if (asteroid.y > gameHeight + 100) {
 			asteroid.destroy();