Time for action – initializing our Blocks object

Finally, we will discuss the method that initializes the blocks based on our patterns array:

1. So inside the Terrain class, we start the initBlock method as follows:

   void Terrain::initBlock(Block * block) {
   
       int blockWidth;
       int blockHeight;
       
       int type = _blockTypes[_currentTypeIndex];
       _currentTypeIndex++;
   
       if (_currentTypeIndex == _blockTypes.size()) {
           _currentTypeIndex = 0;
       }

   Begin by determining the type of building we are initializing. See how we loop through the _blockTypes array using the index stored in _currentTypeIndex. We'll use a similar logic for the other patterns arrays.

2. Then, let's start building our blocks:

   if (_startTerrain) {
      //...
   } else {
       _lastBlockHeight = 2;
       _lastBlockWidth = rand() % 2 + 2;
       block->setupBlock (_lastBlockWidth, _lastBlockHeight, type);
   }

   The player must tap the screen to begin the game (_startTerrain). Until then, we show buildings with the same height (two tiles...