Time for action – creating animations

Animations are a specialized type of action that require a few extra steps:

1. Inside the same createActions method, add the lines for the two animations we have in the game. First, we start with the animation that shows an explosion when a meteor reaches the city. We begin by loading the frames into an Animation object:

   auto animation = Animation::create();
   int i;
   for(i = 1; i <= 10; i++) {
     auto name = String::createWithFormat("boom%i.png", i);
     auto frame = SpriteFrameCache::getInstance()->getSpriteFrameByName(name->getCString());
     animation->addSpriteFrame(frame);
   }

2. Then we use the Animation object inside a Animate action:

   animation->setDelayPerUnit(1 / 10.0f);
   animation->setRestoreOriginalFrame(true);
   _groundHit = 
     Sequence::create(
       MoveBy::create(0, Vec2(0,_screenSize.height * 0.12f)),
       Animate::create(animation),
      CallFuncN::create(CC_CALLBACK_1(GameLayer::animationDone, this)), nullptr);
   _groundHit->retain();

3. The same...