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

/**** 
* Classes
****/ 
var Asteroid = Container.expand(function () {
	var self = Container.call(this);
	var size = 1 + Math.random() * 2; // Size between 1 and 3
	var asteroid = self.attachAsset('asteroid', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: size,
		scaleY: size
	});
	self.size = size;
	self.speedX = (Math.random() - 0.5) * 6;
	self.speedY = 3 + Math.random() * 5;
	self.rotationSpeed = (Math.random() - 0.5) * 0.05;
	self.update = function () {
		self.x += self.speedX;
		self.y += self.speedY;
		self.rotation += self.rotationSpeed;
		// Check if asteroid is outside the screen bounds
		if (self.y > 2732 + asteroid.height) {
			self.markForRemoval = true;
		}
		// Bounce off the sides
		if (self.x < 0 || self.x > 2048) {
			self.speedX = -self.speedX;
		}
	};
	return self;
});
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bullet = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -15; // Negative because bullets move upward
	self.update = function () {
		self.y += self.speed;
		// Check if bullet is outside the screen bounds
		if (self.y < -bullet.height) {
			self.markForRemoval = true;
		}
	};
	return self;
});
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	self.type = Math.random() < 0.5 ? 'shield' : 'multiShot';
	var powerUp = self.attachAsset('powerUp', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: self.type === 'shield' ? 0x2ecc71 : 0xf1c40f
	});
	self.speed = 3 + Math.random() * 2;
	self.update = function () {
		self.y += self.speed;
		self.rotation += 0.02;
		// Check if power-up is outside the screen bounds
		if (self.y > 2732 + powerUp.height) {
			self.markForRemoval = true;
		}
	};
	return self;
});
var Spaceship = Container.expand(function () {
	var self = Container.call(this);
	var ship = self.attachAsset('spaceship', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.shield = false;
	self.shieldTime = 0;
	self.shieldGraphics = null;
	self.multiShot = false;
	self.multiShotTime = 0;
	self.activateShield = function (duration) {
		self.shield = true;
		self.shieldTime = duration;
		if (!self.shieldGraphics) {
			self.shieldGraphics = self.attachAsset('shield', {
				anchorX: 0.5,
				anchorY: 0.5,
				alpha: 0.5
			});
		} else {
			self.shieldGraphics.alpha = 0.5;
		}
	};
	self.activateMultiShot = function (duration) {
		self.multiShot = true;
		self.multiShotTime = duration;
	};
	self.update = function () {
		if (self.shield) {
			self.shieldTime--;
			if (self.shieldTime <= 0) {
				self.shield = false;
				if (self.shieldGraphics) {
					self.shieldGraphics.alpha = 0;
				}
			}
		}
		if (self.multiShot) {
			self.multiShotTime--;
			if (self.multiShotTime <= 0) {
				self.multiShot = false;
			}
		}
	};
	return self;
});
var StartScreen = Container.expand(function () {
	var self = Container.call(this);
	// Game title
	var titleText = new Text2('SPACE DEFENDER', {
		size: 120,
		fill: 0x4fc3f7
	});
	titleText.anchor.set(0.5, 0.5);
	titleText.x = 2048 / 2;
	titleText.y = 2732 / 3;
	self.addChild(titleText);
	// Subtitle
	var subtitleText = new Text2('ASTEROID RUSH', {
		size: 80,
		fill: 0xb3e5fc
	});
	subtitleText.anchor.set(0.5, 0.5);
	subtitleText.x = 2048 / 2;
	subtitleText.y = titleText.y + 120;
	self.addChild(subtitleText);
	// Instructions
	var instructionsText = new Text2('DRAG TO MOVE • TAP TO SHOOT', {
		size: 50,
		fill: 0xFFFFFF
	});
	instructionsText.anchor.set(0.5, 0.5);
	instructionsText.x = 2048 / 2;
	instructionsText.y = 2732 / 2 + 200;
	self.addChild(instructionsText);
	// Animated star field background
	var stars = [];
	for (var i = 0; i < 100; i++) {
		var star = LK.getAsset('powerUp', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 0.1 + Math.random() * 0.3,
			scaleY: 0.1 + Math.random() * 0.3,
			alpha: 0.2 + Math.random() * 0.8,
			tint: 0xFFFFFF
		});
		star.x = Math.random() * 2048;
		star.y = Math.random() * 2732;
		star.speed = 0.5 + Math.random() * 2;
		stars.push(star);
		self.addChild(star);
	}
	// Small spaceship preview
	var shipPreview = LK.getAsset('spaceship', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2,
		scaleY: 2
	});
	shipPreview.x = 2048 / 2;
	shipPreview.y = 2732 / 2 + 400;
	self.addChild(shipPreview);
	// Animate title with pulsing effect
	tween(titleText, {
		scaleX: 1.1,
		scaleY: 1.1
	}, {
		duration: 1500,
		easing: tween.easeInOut,
		onFinish: function onFinish() {
			tween(titleText, {
				scaleX: 1.0,
				scaleY: 1.0
			}, {
				duration: 1500,
				easing: tween.easeInOut,
				onFinish: function onFinish() {
					// Restart the animation
					tween(titleText, {
						scaleX: 1.1,
						scaleY: 1.1
					}, {
						duration: 1500,
						easing: tween.easeInOut
					});
				}
			});
		}
	});
	// Rotate ship preview
	tween(shipPreview, {
		rotation: Math.PI * 2
	}, {
		duration: 8000,
		easing: tween.linear,
		onFinish: function onFinish() {
			shipPreview.rotation = 0;
			// Restart the rotation
			tween(shipPreview, {
				rotation: Math.PI * 2
			}, {
				duration: 8000,
				easing: tween.linear
			});
		}
	});
	self.update = function () {
		// Animate stars
		for (var i = 0; i < stars.length; i++) {
			stars[i].y += stars[i].speed;
			if (stars[i].y > 2732) {
				stars[i].y = 0;
				stars[i].x = Math.random() * 2048;
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000022
});

/**** 
* Game Code
****/ 
// Game variables
var spaceship;
var asteroids = [];
var bullets = [];
var powerUps = [];
var lastShot = 0;
var shotCooldown = 15; // Frames between shots
var score = 0;
var level = 1;
var gameStarted = false;
var dragMode = false;
var highScore = storage.highScore || 0;
var startScreen = new StartScreen();
game.addChild(startScreen);
// Set a space background
game.setBackgroundColor(0x000022);
// Initialize UI elements
var scoreTxt = new Text2('SCORE: 0', {
	size: 50,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0, 0);
LK.gui.topRight.addChild(scoreTxt);
scoreTxt.x = -200;
scoreTxt.y = 20;
var levelTxt = new Text2('LEVEL: 1', {
	size: 50,
	fill: 0xFFFFFF
});
levelTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(levelTxt);
levelTxt.y = 20;
var highScoreTxt = new Text2('HIGH SCORE: ' + highScore, {
	size: 50,
	fill: 0xFFFFFF
});
highScoreTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(highScoreTxt);
highScoreTxt.x = -10;
highScoreTxt.y = 80;
// Create start message text
var startTxt = new Text2('TAP ANYWHERE TO START', {
	size: 80,
	fill: 0xFFFF00
});
startTxt.anchor.set(0.5, 0.5);
startTxt.y = 150;
LK.gui.center.addChild(startTxt);
// Animate the start text
function pulseStartText() {
	tween(startTxt, {
		alpha: 0.3
	}, {
		duration: 800,
		easing: tween.easeInOut,
		onFinish: function onFinish() {
			tween(startTxt, {
				alpha: 1.0
			}, {
				duration: 800,
				easing: tween.easeInOut,
				onFinish: pulseStartText
			});
		}
	});
}
pulseStartText();
// Initialize spaceship
function initializeGame() {
	// Play background music
	LK.playMusic('gameMusic');
	// Create spaceship
	spaceship = new Spaceship();
	spaceship.x = 2048 / 2;
	spaceship.y = 2732 - 200;
	game.addChild(spaceship);
	// Reset game state
	asteroids = [];
	bullets = [];
	powerUps = [];
	lastShot = 0;
	score = 0;
	level = 1;
	LK.setScore(0);
	// Update UI
	scoreTxt.setText('SCORE: 0');
	levelTxt.setText('LEVEL: 1');
	highScoreTxt.setText('HIGH SCORE: ' + highScore);
}
// Create a new asteroid
function createAsteroid() {
	var asteroid = new Asteroid();
	asteroid.x = Math.random() * 2048;
	asteroid.y = -100;
	asteroids.push(asteroid);
	game.addChild(asteroid);
}
// Create a new power-up
function createPowerUp() {
	var powerUp = new PowerUp();
	powerUp.x = 100 + Math.random() * (2048 - 200);
	powerUp.y = -50;
	powerUps.push(powerUp);
	game.addChild(powerUp);
}
// Fire bullets from the spaceship
function fireBullet() {
	if (LK.ticks - lastShot < shotCooldown) {
		return;
	}
	lastShot = LK.ticks;
	if (spaceship.multiShot) {
		// Create 3 bullets when multi-shot is active
		for (var i = -1; i <= 1; i++) {
			var bullet = new Bullet();
			bullet.x = spaceship.x + i * 30;
			bullet.y = spaceship.y - 30;
			bullets.push(bullet);
			game.addChild(bullet);
		}
	} else {
		// Create a single bullet
		var bullet = new Bullet();
		bullet.x = spaceship.x;
		bullet.y = spaceship.y - 30;
		bullets.push(bullet);
		game.addChild(bullet);
	}
	// Play shoot sound
	LK.getSound('shoot').play();
}
// Handle collisions between game objects
function handleCollisions() {
	// Check bullet-asteroid collisions
	for (var i = bullets.length - 1; i >= 0; i--) {
		for (var j = asteroids.length - 1; j >= 0; j--) {
			if (bullets[i] && asteroids[j] && bullets[i].intersects(asteroids[j])) {
				// Increase score based on asteroid size (smaller = harder to hit = more points)
				var pointsGained = Math.floor(10 / asteroids[j].size);
				score += pointsGained;
				LK.setScore(score);
				scoreTxt.setText('SCORE: ' + score);
				// Play explosion sound
				LK.getSound('explosion').play();
				// Flash effect on hit
				LK.effects.flashObject(asteroids[j], 0xff0000, 200);
				// Remove bullet and asteroid
				bullets[i].markForRemoval = true;
				asteroids[j].markForRemoval = true;
				// Break big asteroids into smaller ones
				if (asteroids[j].size > 1.5) {
					for (var k = 0; k < 2; k++) {
						var newAsteroid = new Asteroid();
						newAsteroid.size = asteroids[j].size * 0.6;
						newAsteroid.x = asteroids[j].x + (Math.random() - 0.5) * 40;
						newAsteroid.y = asteroids[j].y + (Math.random() - 0.5) * 40;
						asteroids.push(newAsteroid);
						game.addChild(newAsteroid);
					}
				}
				// Randomly spawn power-up (5% chance)
				if (Math.random() < 0.05) {
					var powerUp = new PowerUp();
					powerUp.x = asteroids[j].x;
					powerUp.y = asteroids[j].y;
					powerUps.push(powerUp);
					game.addChild(powerUp);
				}
				break;
			}
		}
	}
	// Check spaceship-asteroid collisions
	if (spaceship) {
		for (var i = asteroids.length - 1; i >= 0; i--) {
			if (spaceship.intersects(asteroids[i])) {
				if (spaceship.shield) {
					// If the spaceship has a shield, destroy the asteroid but don't end the game
					asteroids[i].markForRemoval = true;
					LK.effects.flashObject(spaceship.shieldGraphics, 0xffffff, 300);
					LK.getSound('explosion').play();
				} else {
					// Game over
					LK.effects.flashScreen(0xff0000, 800);
					// Update high score if needed
					if (score > highScore) {
						highScore = score;
						storage.highScore = highScore;
					}
					// Show game over
					LK.showGameOver();
					return true;
				}
			}
		}
	}
	// Check spaceship-powerup collisions
	if (spaceship) {
		for (var i = powerUps.length - 1; i >= 0; i--) {
			if (spaceship.intersects(powerUps[i])) {
				// Activate power-up effect
				if (powerUps[i].type === 'shield') {
					spaceship.activateShield(600); // 10 seconds at 60 FPS
				} else if (powerUps[i].type === 'multiShot') {
					spaceship.activateMultiShot(600); // 10 seconds at 60 FPS
				}
				// Play power-up sound
				LK.getSound('powerup').play();
				// Flash effect
				LK.effects.flashObject(spaceship, 0xffffff, 300);
				// Remove power-up
				powerUps[i].markForRemoval = true;
			}
		}
	}
	return false;
}
// Clean up game objects marked for removal
function cleanupObjects() {
	for (var i = bullets.length - 1; i >= 0; i--) {
		if (bullets[i].markForRemoval) {
			bullets[i].destroy();
			bullets.splice(i, 1);
		}
	}
	for (var i = asteroids.length - 1; i >= 0; i--) {
		if (asteroids[i].markForRemoval) {
			asteroids[i].destroy();
			asteroids.splice(i, 1);
		}
	}
	for (var i = powerUps.length - 1; i >= 0; i--) {
		if (powerUps[i].markForRemoval) {
			powerUps[i].destroy();
			powerUps.splice(i, 1);
		}
	}
}
// Main game loop
game.update = function () {
	if (!gameStarted) {
		startScreen.update();
		return;
	}
	// Update spaceship
	if (spaceship) {
		spaceship.update();
	}
	// Update bullets
	for (var i = 0; i < bullets.length; i++) {
		bullets[i].update();
	}
	// Update asteroids
	for (var i = 0; i < asteroids.length; i++) {
		asteroids[i].update();
	}
	// Update power-ups
	for (var i = 0; i < powerUps.length; i++) {
		powerUps[i].update();
	}
	// Create asteroids based on level and time
	if (LK.ticks % Math.max(60 - level * 5, 15) === 0) {
		createAsteroid();
	}
	// Create power-ups rarely
	if (LK.ticks % 600 === 0) {
		createPowerUp();
	}
	// Handle collisions
	var gameOver = handleCollisions();
	if (gameOver) {
		return;
	}
	// Clean up objects
	cleanupObjects();
	// Level up based on score
	var newLevel = Math.floor(score / 100) + 1;
	if (newLevel > level) {
		level = newLevel;
		levelTxt.setText('LEVEL: ' + level);
	}
	// Auto-fire if in drag mode
	if (dragMode && LK.ticks % 10 === 0) {
		fireBullet();
	}
};
// Game input handlers
function handleMove(x, y, obj) {
	if (!gameStarted) {
		return;
	}
	if (dragMode && spaceship) {
		spaceship.x = x;
		spaceship.y = y;
	}
}
game.down = function (x, y, obj) {
	if (!gameStarted) {
		// Start the game on first tap
		gameStarted = true;
		initializeGame();
		// Remove the start screen and text
		game.removeChild(startScreen);
		LK.gui.center.removeChild(startTxt);
		// Play a transition effect
		LK.effects.flashScreen(0xFFFFFF, 500);
		return;
	}
	// Start dragging the spaceship
	dragMode = true;
	// Update spaceship position immediately
	if (spaceship) {
		spaceship.x = x;
		spaceship.y = y;
	}
	// Fire a bullet
	fireBullet();
};
game.up = function (x, y, obj) {
	dragMode = false;
};
game.move = handleMove;

===================================================================
--- original.js
+++ change.js
@@ -116,8 +116,120 @@
 		}
 	};
 	return self;
 });
+var StartScreen = Container.expand(function () {
+	var self = Container.call(this);
+	// Game title
+	var titleText = new Text2('SPACE DEFENDER', {
+		size: 120,
+		fill: 0x4fc3f7
+	});
+	titleText.anchor.set(0.5, 0.5);
+	titleText.x = 2048 / 2;
+	titleText.y = 2732 / 3;
+	self.addChild(titleText);
+	// Subtitle
+	var subtitleText = new Text2('ASTEROID RUSH', {
+		size: 80,
+		fill: 0xb3e5fc
+	});
+	subtitleText.anchor.set(0.5, 0.5);
+	subtitleText.x = 2048 / 2;
+	subtitleText.y = titleText.y + 120;
+	self.addChild(subtitleText);
+	// Instructions
+	var instructionsText = new Text2('DRAG TO MOVE • TAP TO SHOOT', {
+		size: 50,
+		fill: 0xFFFFFF
+	});
+	instructionsText.anchor.set(0.5, 0.5);
+	instructionsText.x = 2048 / 2;
+	instructionsText.y = 2732 / 2 + 200;
+	self.addChild(instructionsText);
+	// Animated star field background
+	var stars = [];
+	for (var i = 0; i < 100; i++) {
+		var star = LK.getAsset('powerUp', {
+			anchorX: 0.5,
+			anchorY: 0.5,
+			scaleX: 0.1 + Math.random() * 0.3,
+			scaleY: 0.1 + Math.random() * 0.3,
+			alpha: 0.2 + Math.random() * 0.8,
+			tint: 0xFFFFFF
+		});
+		star.x = Math.random() * 2048;
+		star.y = Math.random() * 2732;
+		star.speed = 0.5 + Math.random() * 2;
+		stars.push(star);
+		self.addChild(star);
+	}
+	// Small spaceship preview
+	var shipPreview = LK.getAsset('spaceship', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		scaleX: 2,
+		scaleY: 2
+	});
+	shipPreview.x = 2048 / 2;
+	shipPreview.y = 2732 / 2 + 400;
+	self.addChild(shipPreview);
+	// Animate title with pulsing effect
+	tween(titleText, {
+		scaleX: 1.1,
+		scaleY: 1.1
+	}, {
+		duration: 1500,
+		easing: tween.easeInOut,
+		onFinish: function onFinish() {
+			tween(titleText, {
+				scaleX: 1.0,
+				scaleY: 1.0
+			}, {
+				duration: 1500,
+				easing: tween.easeInOut,
+				onFinish: function onFinish() {
+					// Restart the animation
+					tween(titleText, {
+						scaleX: 1.1,
+						scaleY: 1.1
+					}, {
+						duration: 1500,
+						easing: tween.easeInOut
+					});
+				}
+			});
+		}
+	});
+	// Rotate ship preview
+	tween(shipPreview, {
+		rotation: Math.PI * 2
+	}, {
+		duration: 8000,
+		easing: tween.linear,
+		onFinish: function onFinish() {
+			shipPreview.rotation = 0;
+			// Restart the rotation
+			tween(shipPreview, {
+				rotation: Math.PI * 2
+			}, {
+				duration: 8000,
+				easing: tween.linear
+			});
+		}
+	});
+	self.update = function () {
+		// Animate stars
+		for (var i = 0; i < stars.length; i++) {
+			stars[i].y += stars[i].speed;
+			if (stars[i].y > 2732) {
+				stars[i].y = 0;
+				stars[i].x = Math.random() * 2048;
+			}
+		}
+	};
+	return self;
+});
 
 /**** 
 * Initialize Game
 ****/ 
@@ -139,8 +251,12 @@
 var level = 1;
 var gameStarted = false;
 var dragMode = false;
 var highScore = storage.highScore || 0;
+var startScreen = new StartScreen();
+game.addChild(startScreen);
+// Set a space background
+game.setBackgroundColor(0x000022);
 // Initialize UI elements
 var scoreTxt = new Text2('SCORE: 0', {
 	size: 50,
 	fill: 0xFFFFFF
@@ -164,14 +280,34 @@
 LK.gui.topRight.addChild(highScoreTxt);
 highScoreTxt.x = -10;
 highScoreTxt.y = 80;
 // Create start message text
-var startTxt = new Text2('TAP TO START', {
+var startTxt = new Text2('TAP ANYWHERE TO START', {
 	size: 80,
-	fill: 0xFFFFFF
+	fill: 0xFFFF00
 });
 startTxt.anchor.set(0.5, 0.5);
+startTxt.y = 150;
 LK.gui.center.addChild(startTxt);
+// Animate the start text
+function pulseStartText() {
+	tween(startTxt, {
+		alpha: 0.3
+	}, {
+		duration: 800,
+		easing: tween.easeInOut,
+		onFinish: function onFinish() {
+			tween(startTxt, {
+				alpha: 1.0
+			}, {
+				duration: 800,
+				easing: tween.easeInOut,
+				onFinish: pulseStartText
+			});
+		}
+	});
+}
+pulseStartText();
 // Initialize spaceship
 function initializeGame() {
 	// Play background music
 	LK.playMusic('gameMusic');
@@ -344,8 +480,9 @@
 }
 // Main game loop
 game.update = function () {
 	if (!gameStarted) {
+		startScreen.update();
 		return;
 	}
 	// Update spaceship
 	if (spaceship) {
@@ -403,9 +540,13 @@
 	if (!gameStarted) {
 		// Start the game on first tap
 		gameStarted = true;
 		initializeGame();
+		// Remove the start screen and text
+		game.removeChild(startScreen);
 		LK.gui.center.removeChild(startTxt);
+		// Play a transition effect
+		LK.effects.flashScreen(0xFFFFFF, 500);
 		return;
 	}
 	// Start dragging the spaceship
 	dragMode = true;