===================================================================
--- original.js
+++ change.js
@@ -1,118 +1,123 @@
-/****
+/**** 
 * Classes
-****/
+****/ 
 // Enemy class
 var Enemy = Container.expand(function () {
-  var self = Container.call(this);
-  var enemyGraphics = self.attachAsset('enemy', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.speed = 5;
-  self.update = function () {
-    self.y += self.speed;
-    if (self.y > 2732) {
-      self.destroy();
-    }
-  };
+	var self = Container.call(this);
+	var enemyGraphics = self.attachAsset('enemy', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 5;
+	self.update = function () {
+		self.y += self.speed;
+		if (self.y > 2732) {
+			self.destroy();
+		}
+	};
 });
 // EnemyBullet class
 var EnemyBullet = Container.expand(function () {
-  var self = Container.call(this);
-  var bulletGraphics = self.attachAsset('enemyBullet', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.speed = 10;
-  self.update = function () {
-    self.y += self.speed;
-    if (self.y > 2732) {
-      self.destroy();
-    }
-  };
+	var self = Container.call(this);
+	var bulletGraphics = self.attachAsset('enemyBullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 10;
+	self.update = function () {
+		self.y += self.speed;
+		if (self.y > 2732) {
+			self.destroy();
+		}
+	};
 });
 // Hero class
 var Hero = Container.expand(function () {
-  var self = Container.call(this);
-  var heroGraphics = self.attachAsset('hero', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.speed = 10;
-  self.shoot = function () {
-    var bullet = new HeroBullet();
-    bullet.x = self.x;
-    bullet.y = self.y - 50;
-    game.addChild(bullet);
-    heroBullets.push(bullet);
-  };
+	var self = Container.call(this);
+	var heroGraphics = self.attachAsset('hero', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 10;
+	self.shoot = function () {
+		var bullet = new HeroBullet();
+		bullet.x = self.x;
+		bullet.y = self.y - 50;
+		game.addChild(bullet);
+		heroBullets.push(bullet);
+	};
 });
 // HeroBullet class
 var HeroBullet = Container.expand(function () {
-  var self = Container.call(this);
-  var bulletGraphics = self.attachAsset('heroBullet', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.speed = -15;
-  self.update = function () {
-    self.y += self.speed;
-    if (self.y < 0) {
-      self.destroy();
-    }
-  };
+	var self = Container.call(this);
+	var bulletGraphics = self.attachAsset('heroBullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = -15;
+	self.update = function () {
+		self.y += self.speed;
+		if (self.y < 0) {
+			self.destroy();
+		}
+	};
 });
 
-/****
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-  backgroundColor: 0x87CEEB // Sky blue background
+	backgroundColor: 0x87CEEB // Sky blue background
 });
 
-/****
+/**** 
 * Game Code
-****/
-// Assets will be automatically created and loaded by the LK engine based on their usage in the code.
+****/ 
 // Initialize assets used in this game.
+// Assets will be automatically created and loaded by the LK engine based on their usage in the code.
 var hero = new Hero();
 hero.x = 2048 / 2;
 hero.y = 2732 - 150;
 game.addChild(hero);
 var enemies = [];
 var heroBullets = [];
 var enemyBullets = [];
 game.down = function (x, y, obj) {
-  hero.shoot();
+	hero.shoot();
 };
 game.update = function () {
-  // Update hero bullets
-  for (var i = heroBullets.length - 1; i >= 0; i--) {
-    heroBullets[i].update();
-    for (var j = enemies.length - 1; j >= 0; j--) {
-      if (heroBullets[i].intersects(enemies[j])) {
-        enemies[j].destroy();
-        heroBullets[i].destroy();
-        enemies.splice(j, 1);
-        heroBullets.splice(i, 1);
-        break;
-      }
-    }
-  }
-  // Update enemies
-  for (var i = enemies.length - 1; i >= 0; i--) {
-    enemies[i].update();
-    if (enemies[i].intersects(hero)) {
-      LK.effects.flashScreen(0xff0000, 1000);
-      LK.showGameOver();
-    }
-  }
-  // Spawn enemies
-  if (LK.ticks % 60 == 0) {
-    var enemy = new Enemy();
-    enemy.x = Math.random() * 2048;
-    enemy.y = -50;
-    game.addChild(enemy);
-    enemies.push(enemy);
-  }
+	// Update hero bullets
+	for (var i = heroBullets.length - 1; i >= 0; i--) {
+		heroBullets[i].update();
+		for (var j = enemies.length - 1; j >= 0; j--) {
+			if (heroBullets[i].intersects(enemies[j])) {
+				enemies[j].destroy();
+				heroBullets[i].destroy();
+				enemies.splice(j, 1);
+				heroBullets.splice(i, 1);
+				break;
+			}
+		}
+	}
+	// Update enemies
+	for (var i = enemies.length - 1; i >= 0; i--) {
+		enemies[i].update();
+		if (enemies[i].intersects(hero)) {
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+		}
+	}
+	// Spawn enemies
+	if (LK.ticks % 60 == 0) {
+		var enemy = new Enemy();
+		enemy.x = Math.random() * 2048;
+		enemy.y = -50;
+		game.addChild(enemy);
+		enemies.push(enemy);
+	}
+	// Move hero
+	if (dragNode) {
+		hero.x = dragNode.x;
+		hero.y = dragNode.y;
+	}
 };
\ No newline at end of file