/**** 
* 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
	});
	// Randomize asteroid appearance
	asteroidGraphics.rotation = Math.random() * Math.PI * 2;
	var scale = 0.6 + Math.random() * 0.8;
	asteroidGraphics.scale.set(scale, scale);
	self.speed = 2 + Math.random() * 3;
	self.rotationSpeed = (Math.random() - 0.5) * 0.05;
	self.width = asteroidGraphics.width * scale;
	self.height = asteroidGraphics.height * scale;
	self.update = function () {
		self.y += self.speed;
		asteroidGraphics.rotation += self.rotationSpeed;
	};
	return self;
});
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -8;
	self.width = bulletGraphics.width;
	self.height = bulletGraphics.height;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	var powerupGraphics = self.attachAsset('powerup', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.type = Math.floor(Math.random() * 3); // 0: shield, 1: slow motion, 2: blaster
	// Set color based on powerup type
	if (self.type === 0) {
		powerupGraphics.tint = 0x3498db; // Blue for shield
	} else if (self.type === 1) {
		powerupGraphics.tint = 0xf1c40f; // Yellow for slow motion
	} else {
		powerupGraphics.tint = 0xe74c3c; // Red for blaster
	}
	self.speed = 1.5 + Math.random() * 1.5;
	self.width = powerupGraphics.width;
	self.height = powerupGraphics.height;
	self.update = function () {
		self.y += self.speed;
		powerupGraphics.rotation += 0.02;
	};
	return self;
});
var Spaceship = Container.expand(function () {
	var self = Container.call(this);
	var shipGraphics = self.attachAsset('spaceship', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.shield = self.attachAsset('shield', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0
	});
	self.hasShield = false;
	self.canShoot = false;
	self.width = shipGraphics.width;
	self.height = shipGraphics.height;
	self.activateShield = function (duration) {
		self.hasShield = true;
		self.shield.alpha = 0.5;
		// Deactivate shield after duration
		LK.setTimeout(function () {
			self.deactivateShield();
		}, duration);
	};
	self.deactivateShield = function () {
		self.hasShield = false;
		self.shield.alpha = 0;
	};
	self.activateBlaster = function (duration) {
		self.canShoot = true;
		// Disable blaster after duration
		LK.setTimeout(function () {
			self.canShoot = false;
		}, duration);
	};
	return self;
});

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

/**** 
* Game Code
****/ 
game.setBackgroundColor(0x000022); // Deep space blue
// Game variables
var spaceship;
var asteroids = [];
var powerups = [];
var bullets = [];
var score = 0;
var gameSpeed = 1; // Used for slow-motion effect
var lastAsteroidTime = 0;
var lastPowerupTime = 0;
var isSlowMotion = false;
var gameStartTime = Date.now();
var dragNode = null;
// Load high score
var highScore = storage.highScore || 0;
// Create score text
var scoreTxt = new Text2('Score: 0', {
	size: 50,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0, 0);
LK.gui.topRight.addChild(scoreTxt);
scoreTxt.x = -250;
scoreTxt.y = 50;
// Create high score text
var highScoreTxt = new Text2('High Score: ' + highScore, {
	size: 40,
	fill: 0xAAAAAA
});
highScoreTxt.anchor.set(0, 0);
LK.gui.topRight.addChild(highScoreTxt);
highScoreTxt.x = -250;
highScoreTxt.y = 110;
// Initialize game elements
function initGame() {
	// Start game music
	LK.playMusic('space_music', {
		fade: {
			start: 0,
			end: 0.7,
			duration: 1000
		}
	});
	// Reset score
	score = 0;
	LK.setScore(0);
	updateScoreDisplay();
	// Reset game speed
	gameSpeed = 1;
	// Record start time
	gameStartTime = Date.now();
	// Create spaceship
	spaceship = new Spaceship();
	spaceship.x = 2048 / 2;
	spaceship.y = 2732 - 300;
	game.addChild(spaceship);
	// Clear existing arrays
	clearGameElements();
	// Reset timers
	lastAsteroidTime = 0;
	lastPowerupTime = 0;
}
function clearGameElements() {
	// Clear all asteroids
	for (var i = asteroids.length - 1; i >= 0; i--) {
		asteroids[i].destroy();
	}
	asteroids = [];
	// Clear all powerups
	for (var i = powerups.length - 1; i >= 0; i--) {
		powerups[i].destroy();
	}
	powerups = [];
	// Clear all bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		bullets[i].destroy();
	}
	bullets = [];
}
function updateScoreDisplay() {
	scoreTxt.setText('Score: ' + score);
	highScoreTxt.setText('High Score: ' + highScore);
}
function createAsteroid() {
	var asteroid = new Asteroid();
	asteroid.x = Math.random() * 2048;
	asteroid.y = -100;
	asteroids.push(asteroid);
	game.addChild(asteroid);
}
function createPowerup() {
	var powerup = new PowerUp();
	powerup.x = 100 + Math.random() * (2048 - 200);
	powerup.y = -100;
	powerups.push(powerup);
	game.addChild(powerup);
}
function createBullet() {
	var bullet = new Bullet();
	bullet.x = spaceship.x;
	bullet.y = spaceship.y - 60;
	bullets.push(bullet);
	game.addChild(bullet);
	LK.getSound('shoot').play();
}
function activateSlowMotion(duration) {
	isSlowMotion = true;
	gameSpeed = 0.5;
	// Return to normal speed after duration
	LK.setTimeout(function () {
		isSlowMotion = false;
		gameSpeed = 1;
	}, duration);
}
function handleCollision() {
	// Flash the screen red
	LK.effects.flashScreen(0xff0000, 500);
	// Play explosion sound
	LK.getSound('explosion').play();
	// Flash the ship
	LK.effects.flashObject(spaceship, 0xff0000, 500);
	// Store high score
	if (score > highScore) {
		highScore = score;
		storage.highScore = highScore;
		updateScoreDisplay();
	}
	// Show game over
	LK.setTimeout(function () {
		LK.showGameOver();
	}, 500);
}
// Event handlers
function handleMove(x, y, obj) {
	if (dragNode) {
		// Keep spaceship within game bounds
		dragNode.x = Math.max(dragNode.width / 2, Math.min(2048 - dragNode.width / 2, x));
		dragNode.y = Math.max(dragNode.height / 2, Math.min(2732 - dragNode.height / 2, y));
	}
}
game.move = handleMove;
game.down = function (x, y, obj) {
	dragNode = spaceship;
	handleMove(x, y, obj);
};
game.up = function (x, y, obj) {
	dragNode = null;
};
// Game update function
game.update = function () {
	// Increment score based on survival time (10 points per second)
	var currentTime = Date.now();
	var elapsedSeconds = Math.floor((currentTime - gameStartTime) / 1000);
	score = elapsedSeconds * 10;
	LK.setScore(score);
	updateScoreDisplay();
	// Spawn asteroids with increasing frequency
	var difficulty = Math.min(10, 1 + Math.floor(elapsedSeconds / 10));
	var asteroidInterval = Math.max(30, 60 - difficulty * 5);
	if (LK.ticks - lastAsteroidTime > asteroidInterval / gameSpeed) {
		createAsteroid();
		lastAsteroidTime = LK.ticks;
	}
	// Occasionally spawn power-ups
	if (LK.ticks - lastPowerupTime > 300 / gameSpeed && Math.random() < 0.01) {
		createPowerup();
		lastPowerupTime = LK.ticks;
	}
	// Update asteroids
	for (var i = asteroids.length - 1; i >= 0; i--) {
		var asteroid = asteroids[i];
		// Increase asteroid speed every 100 points
		if (score % 100 === 0 && score !== 0) {
			asteroid.speed += 0.5;
		}
		// Apply game speed to movement
		asteroid.speed = asteroid.speed * gameSpeed;
		asteroid.update();
		asteroid.speed = asteroid.speed / gameSpeed;
		// Check if asteroid is off screen
		if (asteroid.y > 2732 + 100) {
			asteroid.destroy();
			asteroids.splice(i, 1);
			continue;
		}
		// Check for collision with spaceship
		if (spaceship && asteroid.intersects(spaceship)) {
			if (spaceship.hasShield) {
				// Shield protects the spaceship
				spaceship.deactivateShield();
				asteroid.destroy();
				asteroids.splice(i, 1);
				score += 25; // Bonus for destroying asteroid with shield
				continue;
			} else {
				// Game over on collision
				handleCollision();
				return;
			}
		}
		// Check for collision with bullets
		for (var j = bullets.length - 1; j >= 0; j--) {
			if (asteroid.intersects(bullets[j])) {
				asteroid.destroy();
				asteroids.splice(i, 1);
				bullets[j].destroy();
				bullets.splice(j, 1);
				score += 50; // Bonus for destroying asteroid with bullet
				break;
			}
		}
	}
	// Update powerups
	for (var i = powerups.length - 1; i >= 0; i--) {
		var powerup = powerups[i];
		// Apply game speed to movement
		powerup.speed = powerup.speed * gameSpeed;
		powerup.update();
		powerup.speed = powerup.speed / gameSpeed;
		// Check if powerup is off screen
		if (powerup.y > 2732 + 100) {
			powerup.destroy();
			powerups.splice(i, 1);
			continue;
		}
		// Check for collision with spaceship
		if (spaceship && powerup.intersects(spaceship)) {
			// Play powerup sound
			LK.getSound('powerup_collect').play();
			// Apply powerup effect
			if (powerup.type === 0) {
				// Shield
				spaceship.activateShield(10000);
			} else if (powerup.type === 1) {
				// Slow motion
				activateSlowMotion(8000);
			} else {
				// Blaster
				spaceship.activateBlaster(12000);
			}
			// Remove powerup
			powerup.destroy();
			powerups.splice(i, 1);
		}
	}
	// Update 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 < -100) {
			bullet.destroy();
			bullets.splice(i, 1);
		}
	}
	// Fire bullet if spaceship has blaster and space is pressed
	if (spaceship && spaceship.canShoot && LK.ticks % 15 === 0) {
		createBullet();
	}
};
// Initialize the game
initGame();

===================================================================
--- original.js
+++ change.js
@@ -284,8 +284,12 @@
 	}
 	// Update asteroids
 	for (var i = asteroids.length - 1; i >= 0; i--) {
 		var asteroid = asteroids[i];
+		// Increase asteroid speed every 100 points
+		if (score % 100 === 0 && score !== 0) {
+			asteroid.speed += 0.5;
+		}
 		// Apply game speed to movement
 		asteroid.speed = asteroid.speed * gameSpeed;
 		asteroid.update();
 		asteroid.speed = asteroid.speed / gameSpeed;