===================================================================
--- original.js
+++ change.js
@@ -1,45 +1,53 @@
-/****
+/**** 
 * Classes
 ****/
 // Hero class
 var Hero = Container.expand(function () {
-  var self = Container.call(this);
-  var heroGraphics = self.createAsset('hero', 'Hero character', 0.5, 0.5);
-  self.update = function () {
-    // Hero update logic
-  };
-  self.shoot = function () {
-    // Hero shoot logic
-  };
+	var self = Container.call(this);
+	var heroGraphics = self.createAsset('hero', 'Hero character', 0.5, 0.5);
+	self.bulletLimit = 5; // Initialize bullet limit
+	self.update = function () {
+		// Hero update logic
+	};
+	self.shoot = function () {
+		if (this.bulletLimit > 0) {
+			var bullet = new Bullet();
+			bullet.x = this.x;
+			bullet.y = this.y - this.height / 2;
+			heroBullets.push(bullet);
+			game.addChild(bullet);
+			this.bulletLimit--;
+		} // Shoot only if bullets are available and decrement bullet limit
+	};
 });
 // Bullet class
 var Bullet = Container.expand(function () {
-  var self = Container.call(this);
-  var bulletGraphics = self.createAsset('bullet', 'Hero Bullet', 0.5, 0.5);
-  self.speed = -10;
-  self.move = function () {
-    self.y += self.speed;
-  };
+	var self = Container.call(this);
+	var bulletGraphics = self.createAsset('bullet', 'Hero Bullet', 0.5, 0.5);
+	self.speed = -10;
+	self.move = function () {
+		self.y += self.speed;
+	};
 });
 // Enemy class
 var Enemy = Container.expand(function () {
-  var self = Container.call(this);
-  var enemyGraphics = self.createAsset('enemy', 'Enemy character', 0.5, 0.5);
-  self.speed = 2;
-  self.move = function () {
-    self.y += self.speed;
-  };
+	var self = Container.call(this);
+	var enemyGraphics = self.createAsset('enemy', 'Enemy character', 0.5, 0.5);
+	self.speed = 2;
+	self.move = function () {
+		self.y += self.speed;
+	};
 });
 
-/****
+/**** 
 * Initialize Game
 ****/
 var game = new LK.Game({
-  backgroundColor: 0x000000 // Init game with black background
+	backgroundColor: 0x000000 // Init game with black background
 });
 
-/****
+/**** 
 * Game Code
 ****/
 // Initialize important asset arrays
 var heroBullets = [];
@@ -49,78 +57,80 @@
 hero.x = game.width / 2;
 hero.y = game.height - 100;
 // Create score display
 var scoreTxt = new Text2('0', {
-  size: 150,
-  fill: "#ffffff"
+	size: 150,
+	fill: "#ffffff"
 });
 scoreTxt.anchor.set(0.5, 0);
 LK.gui.top.addChild(scoreTxt);
 // Handle hero dragging
 var dragNode = null;
 game.on('down', function (obj) {
-  dragNode = hero;
+	dragNode = hero;
 });
 game.on('move', function (obj) {
-  if (dragNode) {
-    var pos = obj.event.getLocalPosition(game);
-    dragNode.x = pos.x;
-  }
+	if (dragNode) {
+		var pos = obj.event.getLocalPosition(game);
+		dragNode.x = pos.x;
+	}
 });
 game.on('up', function (obj) {
-  dragNode = null;
+	dragNode = null;
 });
 // Game tick event
 LK.on('tick', function () {
-  // Update hero
-  hero.update();
-  // Move and check bullets
-  for (var i = heroBullets.length - 1; i >= 0; i--) {
-    var bullet = heroBullets[i];
-    bullet.move();
-    // Check for bullet collision with enemies
-    for (var j = enemies.length - 1; j >= 0; j--) {
-      if (bullet.intersects(enemies[j])) {
-        // Update score
-        LK.setScore(LK.getScore() + 1);
-        scoreTxt.setText(LK.getScore());
-        // Destroy enemy and bullet
-        enemies[j].destroy();
-        enemies.splice(j, 1);
-        bullet.destroy();
-        heroBullets.splice(i, 1);
-        break;
-      }
-    }
-    // Remove off-screen bullets
-    if (bullet.y < -50) {
-      bullet.destroy();
-      heroBullets.splice(i, 1);
-    }
-  }
-  // Move enemies
-  for (var k = enemies.length - 1; k >= 0; k--) {
-    enemies[k].move();
-    // Check for enemy collision with hero
-    if (enemies[k].intersects(hero)) {
-      LK.effects.flashScreen(0xff0000, 1000);
-      LK.showGameOver();
-      return;
-    }
-  }
-  // Spawn enemies
-  if (LK.ticks % 120 == 0) {
-    var enemy = new Enemy();
-    enemy.x = Math.random() * (game.width - enemy.width) + enemy.width / 2;
-    enemy.y = -enemy.height;
-    enemies.push(enemy);
-    game.addChild(enemy);
-  }
-  // Hero shoots bullets
-  if (LK.ticks % 30 == 0) {
-    var bullet = new Bullet();
-    bullet.x = hero.x;
-    bullet.y = hero.y - hero.height / 2;
-    heroBullets.push(bullet);
-    game.addChild(bullet);
-  }
+	// Update hero
+	hero.update();
+	// Move and check bullets
+	for (var i = heroBullets.length - 1; i >= 0; i--) {
+		var bullet = heroBullets[i];
+		bullet.move();
+		// Check for bullet collision with enemies
+		for (var j = enemies.length - 1; j >= 0; j--) {
+			if (bullet.intersects(enemies[j])) {
+				// Update score
+				LK.setScore(LK.getScore() + 1);
+				scoreTxt.setText(LK.getScore());
+				// Increment hero's bullet limit
+				hero.bulletLimit++;
+				// Destroy enemy and bullet
+				enemies[j].destroy();
+				enemies.splice(j, 1);
+				bullet.destroy();
+				heroBullets.splice(i, 1);
+				break;
+			}
+		}
+		// Remove off-screen bullets
+		if (bullet.y < -50) {
+			bullet.destroy();
+			heroBullets.splice(i, 1);
+		}
+	}
+	// Move enemies
+	for (var k = enemies.length - 1; k >= 0; k--) {
+		enemies[k].move();
+		// Check for enemy collision with hero
+		if (enemies[k].intersects(hero)) {
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+			return;
+		}
+	}
+	// Spawn enemies
+	if (LK.ticks % 120 == 0) {
+		var enemy = new Enemy();
+		enemy.x = Math.random() * (game.width - enemy.width) + enemy.width / 2;
+		enemy.y = -enemy.height;
+		enemies.push(enemy);
+		game.addChild(enemy);
+	}
+	// Hero shoots bullets
+	if (LK.ticks % 30 == 0) {
+		var bullet = new Bullet();
+		bullet.x = hero.x;
+		bullet.y = hero.y - hero.height / 2;
+		heroBullets.push(bullet);
+		game.addChild(bullet);
+	}
 });
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