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

/**** 
* Classes
****/ 
// Define the Alien class
var Alien = Container.expand(function () {
	var self = Container.call(this);
	var alienGraphics = self.attachAsset('alien', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 4;
	self.update = function () {
		// Alien moves in a straight line until it hits a wall
		if (self.direction === undefined) {
			self.direction = Math.floor(Math.random() * 4);
		}
		switch (self.direction) {
			case 0:
				// Move up
				if (self.y - self.speed < 0) {
					self.direction = 1; // Change direction to down
				} else {
					self.y -= self.speed;
				}
				break;
			case 1:
				// Move down
				if (self.y + self.speed > 2732) {
					self.direction = 0; // Change direction to up
				} else {
					self.y += self.speed;
				}
				break;
			case 2:
				// Move left
				if (self.x - self.speed < 0) {
					self.direction = 3; // Change direction to right
				} else {
					self.x -= self.speed;
				}
				break;
			case 3:
				// Move right
				if (self.x + self.speed > 2048) {
					self.direction = 2; // Change direction to left
				} else {
					self.x += self.speed;
				}
				break;
		}
	};
});
var BombShard = Container.expand(function () {
	var self = Container.call(this);
	var bombShardGraphics = self.attachAsset('bombShard', {
		anchorX: 0.5,
		anchorY: 0.5
	});
});
// Define the Obstacle class
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
});
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Define the Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		// Player update logic
	};
});
// Define the PowerUp class
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	var powerupGraphics = self.attachAsset('powerup', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.type = 'speed'; // Default powerup type
	self.duration = 5000; // 5 seconds duration
	// Add pulsing animation
	tween(self, {
		scaleX: 1.2,
		scaleY: 1.2
	}, {
		duration: 1000,
		easing: tween.easeInOut,
		onFinish: function onFinish() {
			tween(self, {
				scaleX: 1.0,
				scaleY: 1.0
			}, {
				duration: 1000,
				easing: tween.easeInOut,
				onFinish: function onFinish() {
					// Restart the pulsing animation
					tween(self, {
						scaleX: 1.2,
						scaleY: 1.2
					}, {
						duration: 1000,
						easing: tween.easeInOut,
						onFinish: arguments.callee
					});
				}
			});
		}
	});
	return self;
});

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

/**** 
* Game Code
****/ 
//<Write imports for supported plugins here>
//<Assets used in the game will automatically appear here>
var cityBackground = game.attachAsset('city', {
	anchorX: 0,
	anchorY: 0
});
// Initialize player, aliens, obstacles and bomb shards
var player = game.addChild(new Player());
player.x = 1024;
player.y = 1366;
var aliens = [];
for (var i = 0; i < 7; i++) {
	var alien = new Alien();
	do {
		alien.x = Math.random() * 2048;
		alien.y = Math.random() * 2732;
	} while (Math.hypot(player.x - alien.x, player.y - alien.y) < 500);
	aliens.push(alien);
	game.addChild(alien);
}
var obstacles = [];
for (var j = 0; j < 10; j++) {
	var obstacle = new Obstacle();
	obstacle.x = Math.random() * 2048;
	obstacle.y = Math.random() * 2732;
	obstacles.push(obstacle);
	game.addChild(obstacle);
}
var bombShards = [];
var bombShardsCollected = 0; // Initialize bombShardsCollected to 0
for (var k = 0; k < 20; k++) {
	var bombShard = new BombShard();
	bombShard.x = Math.random() * 2048;
	bombShard.y = Math.random() * 2732;
	bombShards.push(bombShard);
	game.addChild(bombShard);
}
// Joystick variables
var joystickBase = null;
var joystickKnob = null;
var joystickActive = false;
var joystickCenter = {
	x: 0,
	y: 0
};
var joystickRadius = 100;
// Create joystick base
joystickBase = LK.getAsset('city', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 0.15,
	scaleY: 0.15,
	alpha: 0.3
});
joystickBase.x = 200;
joystickBase.y = 2400;
LK.gui.bottomLeft.addChild(joystickBase);
// Create joystick knob
joystickKnob = LK.getAsset('bombShard', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 1.5,
	scaleY: 1.5,
	alpha: 0.7
});
joystickKnob.x = 0;
joystickKnob.y = 0;
joystickBase.addChild(joystickKnob);
// Handle touch input for joystick
game.down = function (x, y, obj) {
	var localPos = LK.gui.bottomLeft.toLocal({
		x: x,
		y: y
	});
	var distance = Math.hypot(localPos.x - joystickBase.x, localPos.y - joystickBase.y);
	if (distance <= joystickRadius) {
		joystickActive = true;
		joystickCenter.x = joystickBase.x;
		joystickCenter.y = joystickBase.y;
	}
};
game.move = function (x, y, obj) {
	if (joystickActive) {
		var localPos = LK.gui.bottomLeft.toLocal({
			x: x,
			y: y
		});
		var dx = localPos.x - joystickCenter.x;
		var dy = localPos.y - joystickCenter.y;
		var distance = Math.hypot(dx, dy);
		if (distance > joystickRadius) {
			dx = dx / distance * joystickRadius;
			dy = dy / distance * joystickRadius;
		}
		joystickKnob.x = dx;
		joystickKnob.y = dy;
		// Move player based on joystick input
		var moveSpeed = player.speed;
		var normalizedX = dx / joystickRadius;
		var normalizedY = dy / joystickRadius;
		var newX = player.x + normalizedX * moveSpeed;
		var newY = player.y + normalizedY * moveSpeed;
		// Keep player within bounds
		if (newX >= 0 && newX <= 2048) {
			player.x = newX;
		}
		if (newY >= 0 && newY <= 2732) {
			player.y = newY;
		}
	}
};
game.up = function (x, y, obj) {
	if (joystickActive) {
		joystickActive = false;
		joystickKnob.x = 0;
		joystickKnob.y = 0;
	}
};
var powerups = [];
var lastPowerupSpawn = 0;
var playerSpeedBoost = 0;
var playerSpeedBoostEndTime = 0;
// Play background music
LK.playMusic('tttttt');
// Update game logic
game.update = function () {
	// Spawn powerup every 30 seconds (1800 ticks at 60fps)
	if (LK.ticks - lastPowerupSpawn >= 1800) {
		var powerup = new PowerUp();
		powerup.x = Math.random() * 1848 + 100; // Keep away from edges
		powerup.y = Math.random() * 2532 + 100; // Keep away from edges
		powerups.push(powerup);
		game.addChild(powerup);
		lastPowerupSpawn = LK.ticks;
	}
	// Check for powerup collection
	for (var p = 0; p < powerups.length; p++) {
		if (player.intersects(powerups[p])) {
			// Apply speed boost
			playerSpeedBoost = 3;
			playerSpeedBoostEndTime = LK.ticks + 300; // 5 seconds at 60fps
			player.speed = 8; // Increase speed
			powerups[p].destroy();
			powerups.splice(p, 1);
			p--;
		}
	}
	// Check if speed boost expired
	if (LK.ticks >= playerSpeedBoostEndTime && playerSpeedBoost > 0) {
		playerSpeedBoost = 0;
		player.speed = 5; // Reset to normal speed
	}
	// Update player
	player.update();
	// Update aliens
	for (var i = 0; i < aliens.length; i++) {
		// Check if player is hiding behind an obstacle
		var isHiding = false;
		for (var j = 0; j < obstacles.length; j++) {
			if (player.intersects(obstacles[j])) {
				isHiding = true;
				break;
			}
		}
		// If player is not hiding and 3 seconds have passed, make the closest alien chase the player
		if (!isHiding && LK.ticks > 180) {
			var closestAlien = aliens.reduce(function (prev, curr) {
				var d1 = Math.hypot(player.x - prev.x, player.y - prev.y);
				var d2 = Math.hypot(player.x - curr.x, player.y - curr.y);
				return d1 < d2 ? prev : curr;
			});
			var dx = player.x - closestAlien.x;
			var dy = player.y - closestAlien.y;
			var angle = Math.atan2(dy, dx);
			closestAlien.x += Math.cos(angle) * (closestAlien.speed / 4);
			closestAlien.y += Math.sin(angle) * (closestAlien.speed / 4);
		}
		// Check for collision with player
		if (player.intersects(aliens[i])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	}
	// Check for player intersecting with bomb shards
	for (var k = 0; k < bombShards.length; k++) {
		if (player.intersects(bombShards[k])) {
			// Player has collected a bomb shard
			bombShardsCollected++;
			bombShards[k].destroy(); // Destroy the collected bomb shard
			bombShards.splice(k, 1); // Remove the collected bomb shard from the array
			k--; // Decrement k to account for the removed bomb shard
		}
	}
	// If all bomb shards are collected, destroy all aliens and end game
	if (bombShardsCollected === 20) {
		for (var i = 0; i < aliens.length; i++) {
			aliens[i].destroy();
		}
		aliens = []; // Clear the aliens array
		LK.showYouWin(); // End game once all aliens are destroyed
	}
};

===================================================================
--- original.js
+++ change.js
@@ -1,5 +1,10 @@
 /**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
 * Classes
 ****/ 
 // Define the Alien class
 var Alien = Container.expand(function () {
@@ -78,8 +83,47 @@
 	self.update = function () {
 		// Player update logic
 	};
 });
+// Define the PowerUp class
+var PowerUp = Container.expand(function () {
+	var self = Container.call(this);
+	var powerupGraphics = self.attachAsset('powerup', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.type = 'speed'; // Default powerup type
+	self.duration = 5000; // 5 seconds duration
+	// Add pulsing animation
+	tween(self, {
+		scaleX: 1.2,
+		scaleY: 1.2
+	}, {
+		duration: 1000,
+		easing: tween.easeInOut,
+		onFinish: function onFinish() {
+			tween(self, {
+				scaleX: 1.0,
+				scaleY: 1.0
+			}, {
+				duration: 1000,
+				easing: tween.easeInOut,
+				onFinish: function onFinish() {
+					// Restart the pulsing animation
+					tween(self, {
+						scaleX: 1.2,
+						scaleY: 1.2
+					}, {
+						duration: 1000,
+						easing: tween.easeInOut,
+						onFinish: arguments.callee
+					});
+				}
+			});
+		}
+	});
+	return self;
+});
 
 /**** 
 * Initialize Game
 ****/ 
@@ -89,8 +133,10 @@
 
 /**** 
 * Game Code
 ****/ 
+//<Write imports for supported plugins here>
+//<Assets used in the game will automatically appear here>
 var cityBackground = game.attachAsset('city', {
 	anchorX: 0,
 	anchorY: 0
 });
@@ -205,12 +251,42 @@
 		joystickKnob.x = 0;
 		joystickKnob.y = 0;
 	}
 };
+var powerups = [];
+var lastPowerupSpawn = 0;
+var playerSpeedBoost = 0;
+var playerSpeedBoostEndTime = 0;
 // Play background music
 LK.playMusic('tttttt');
 // Update game logic
 game.update = function () {
+	// Spawn powerup every 30 seconds (1800 ticks at 60fps)
+	if (LK.ticks - lastPowerupSpawn >= 1800) {
+		var powerup = new PowerUp();
+		powerup.x = Math.random() * 1848 + 100; // Keep away from edges
+		powerup.y = Math.random() * 2532 + 100; // Keep away from edges
+		powerups.push(powerup);
+		game.addChild(powerup);
+		lastPowerupSpawn = LK.ticks;
+	}
+	// Check for powerup collection
+	for (var p = 0; p < powerups.length; p++) {
+		if (player.intersects(powerups[p])) {
+			// Apply speed boost
+			playerSpeedBoost = 3;
+			playerSpeedBoostEndTime = LK.ticks + 300; // 5 seconds at 60fps
+			player.speed = 8; // Increase speed
+			powerups[p].destroy();
+			powerups.splice(p, 1);
+			p--;
+		}
+	}
+	// Check if speed boost expired
+	if (LK.ticks >= playerSpeedBoostEndTime && playerSpeedBoost > 0) {
+		playerSpeedBoost = 0;
+		player.speed = 5; // Reset to normal speed
+	}
 	// Update player
 	player.update();
 	// Update aliens
 	for (var i = 0; i < aliens.length; i++) {