===================================================================
--- original.js
+++ change.js
@@ -1,123 +1,145 @@
-/****
+/**** 
 * Classes
-****/
+****/ 
 // Bullet class
 var Bullet = Container.expand(function () {
-  var self = Container.call(this);
-  var bulletGraphics = self.attachAsset('bullet', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.speed = -10;
-  self.update = function () {
-    self.y += self.speed;
-    // Check if the bullet is off-screen and needs to be removed
-    if (self.y < -self.height) {
-      self.destroy();
-    }
-  };
+	var self = Container.call(this);
+	var bulletGraphics = self.attachAsset('bullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = -10;
+	self.update = function () {
+		self.y += self.speed;
+		// Check if the bullet is off-screen and needs to be removed
+		if (self.y < -self.height) {
+			self.destroy();
+		}
+	};
 });
+// Explosion class
+var Explosion = Container.expand(function () {
+	var self = Container.call(this);
+	var explosionGraphics = self.attachAsset('explosion', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.update = function () {
+		// Reduce the size of the explosion over time
+		self.scale.x -= 0.05;
+		self.scale.y -= 0.05;
+		// Once the explosion has disappeared, remove it
+		if (self.scale.x <= 0 || self.scale.y <= 0) {
+			self.destroy();
+		}
+	};
+});
 // Assets will be automatically created and loaded by the LK engine based on usage in the game code.
 // Hero class
 var Hero = Container.expand(function () {
-  var self = Container.call(this);
-  var heroGraphics = self.attachAsset('hero', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.update = function () {
-    // Hero update logic, such as movement, can be added here.
-  };
+	var self = Container.call(this);
+	var heroGraphics = self.attachAsset('hero', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.update = function () {
+		// Hero update logic, such as movement, can be added here.
+	};
 });
 // Obstacle class
 var Obstacle = Container.expand(function () {
-  var self = Container.call(this);
-  var obstacleGraphics = self.attachAsset('obstacle', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.speed = 5;
-  self.update = function () {
-    self.y += self.speed;
-    // Check if the obstacle is off-screen and needs to be removed
-    if (self.y > 2732 + self.height) {
-      self.destroy();
-    }
-  };
+	var self = Container.call(this);
+	var obstacleGraphics = self.attachAsset('obstacle', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 5;
+	self.update = function () {
+		self.y += self.speed;
+		// Check if the obstacle is off-screen and needs to be removed
+		if (self.y > 2732 + self.height) {
+			self.destroy();
+		}
+	};
 });
 
-/****
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-  backgroundColor: 0x000000 // Initialize game with a black background
+	backgroundColor: 0x000000 // Initialize game with a black background
 });
 
-/****
+/**** 
 * Game Code
-****/
+****/ 
 var hero;
 var obstacles = [];
 var bullets = [];
 var score = 0;
 var scoreTxt;
 function spawnObstacle() {
-  var obstacle = new Obstacle();
-  obstacle.x = Math.random() * (2048 - obstacle.width) + obstacle.width / 2;
-  obstacle.y = -obstacle.height / 2;
-  obstacles.push(obstacle);
-  game.addChild(obstacle);
+	var obstacle = new Obstacle();
+	obstacle.x = Math.random() * (2048 - obstacle.width) + obstacle.width / 2;
+	obstacle.y = -obstacle.height / 2;
+	obstacles.push(obstacle);
+	game.addChild(obstacle);
 }
 function fireBullet() {
-  var bullet = new Bullet();
-  bullet.x = hero.x;
-  bullet.y = hero.y - hero.height / 2 - bullet.height / 2;
-  bullets.push(bullet);
-  game.addChild(bullet);
+	var bullet = new Bullet();
+	bullet.x = hero.x;
+	bullet.y = hero.y - hero.height / 2 - bullet.height / 2;
+	bullets.push(bullet);
+	game.addChild(bullet);
 }
 function checkCollisions() {
-  bullets.forEach(function (bullet, bulletIndex) {
-    obstacles.forEach(function (obstacle, obstacleIndex) {
-      if (bullet.intersects(obstacle)) {
-        bullet.destroy();
-        obstacle.destroy();
-        bullets.splice(bulletIndex, 1);
-        obstacles.splice(obstacleIndex, 1);
-        score += 10;
-        scoreTxt.setText("Score: " + score);
-      }
-    });
-  });
+	bullets.forEach(function (bullet, bulletIndex) {
+		obstacles.forEach(function (obstacle, obstacleIndex) {
+			if (bullet.intersects(obstacle)) {
+				bullet.destroy();
+				obstacle.destroy();
+				// Create an explosion at the location of the destroyed obstacle
+				var explosion = new Explosion();
+				explosion.x = obstacle.x;
+				explosion.y = obstacle.y;
+				game.addChild(explosion);
+				bullets.splice(bulletIndex, 1);
+				obstacles.splice(obstacleIndex, 1);
+				score += 10;
+				scoreTxt.setText("Score: " + score);
+			}
+		});
+	});
 }
 // Initialize hero
 hero = new Hero();
 hero.x = 1024; // Center horizontally
 hero.y = 2732 - 200; // Position from the bottom
 game.addChild(hero);
 // Initialize score display
 scoreTxt = new Text2("Score: 0", {
-  size: 100,
-  fill: "#ffffff"
+	size: 100,
+	fill: "#ffffff"
 });
 LK.gui.top.addChild(scoreTxt);
 // Game update function
 game.update = function () {
-  if (LK.ticks % 120 == 0) {
-    // Spawn an obstacle every 2 seconds
-    spawnObstacle();
-  }
-  if (LK.ticks % 30 == 0) {
-    // Fire a bullet every 0.5 seconds
-    fireBullet();
-  }
-  checkCollisions();
+	if (LK.ticks % 120 == 0) {
+		// Spawn an obstacle every 2 seconds
+		spawnObstacle();
+	}
+	if (LK.ticks % 30 == 0) {
+		// Fire a bullet every 0.5 seconds
+		fireBullet();
+	}
+	checkCollisions();
 };
 // Touch event to move the hero
 game.down = function (x, y, obj) {
-  var gamePos = game.toLocal(obj.global);
-  hero.x = gamePos.x;
+	var gamePos = game.toLocal(obj.global);
+	hero.x = gamePos.x;
 };
 game.move = function (x, y, obj) {
-  var gamePos = game.toLocal(obj.global);
-  hero.x = gamePos.x;
+	var gamePos = game.toLocal(obj.global);
+	hero.x = gamePos.x;
 };
\ No newline at end of file