Using Map to describe stories flow in Dart Lang. Awesome

main.dart

main() {
  void nextStory(int userChoice) {
    int _storyNumber = 4;

    _storyNumber = {
      0: {1: 2, 2: 1},
      1: {1: 2, 2: 3},
      2: {1: 5, 2: 4},
      3: {1: 0, 2: 0},
      4: {1: 0, 2: 0},
      5: {1: 0, 2: 0},
    }[_storyNumber][userChoice];

    print(_storyNumber);
  }

  nextStory(2);
}