Creating and spawning the fish

We already know the different kinds of fish that will be available to the player within a specific level. We have extracted the value set into the ListOfFish custom property of the world and stored it in the fish_list_ variable of the GameWorld class. We now use this variable to create the various fishes in the CreateFish function of GameWorld.cpp:

void GameWorld::CreateFish()
{
  Fish* fish = NULL;
  // get integer list from comma separated string
  vector<int> fish_type_vec = GameGlobals::GetIntListFromString(fish_list_);
  // this list consists of throwable fish
  num_throwable_fish_ = fish_type_vec.size();
  // initially, we will only have throwable fish
  num_total_fish_ = num_throwable_fish_;

  for(int i = 0; i < num_throwable_fish_; ++i)
  {
    // create each type of fish
    EFishType fish_type = (EFishType)fish_type_vec[i];
    switch(fish_type)
    {
    case E_FISH_SIMPLE:
      fish = Fish::create(this);
      break;
    case E_FISH_SHOOTING...