Time for action – adding a fire to the scene

We are going to add a campfire to our scene. We will add an image of the campfire base and the fire burning on top of it. To do this, follow these steps:

1. Create a new group in Resources and call it Campfire.

2. Open the book's supporting files at Chapter_07/Assets/Campfire and add the campfire.png and campfire-hd.png images to the Xcode project in the Campfire group.

3. Open the GameScene.m file and add the following method below the onEnter method:

   -(void)startFire
   {
       CGSize viewSize = [CCDirector sharedDirector].viewSize;
       
       //1
       CCSprite *campfire = 
         [CCSprite spriteWithImageNamed:@"campfire.png"];
       campfire.position = ccp(viewSize.width * 0.5,
                               viewSize.height * 0.05f);
       [self addChild:campfire];
       
       //2
       CGPoint campfireTop = 
         ccp(campfire.position.x, 
             campfire.position.y + 
               campfire.boundingBox.size.height * 0.5f);
       
       //3
       CCParticleFire *fire = 
        ...