OOP DBZ - Inheritance

main.dart

class Saiyan {
  Saiyan({this.name, this.power});

  Saiyan.superForm(this.name) : power = 10000;

  final String name;
  final int power;

  Saiyan operator +(Saiyan otherSaiyan) {
    return Saiyan(
      name: '$name${otherSaiyan.name}',
      power: power + otherSaiyan.power,
    );
  }

  Saiyan fight(Saiyan otherSaiyan) {
    final Saiyan winner = (power > otherSaiyan.power) ? this : otherSaiyan;
    return winner;
  }

  @override
  String toString() => 'Saiyan $name Power Level : $power';
}

class SupaSaiyan extends Saiyan {
  SupaSaiyan({name, power, this.level})
      : super(name: name, power: power * level);

  final int level;

  @override
  String toString() => 'Super Saiyan $level $name Power: $power';
}

void main() {
  final Saiyan goku = Saiyan(name: 'Goku', power: 8000);
  print(goku);

  final Saiyan broly = Saiyan.superForm('Broly');
  print(broly);

  final SupaSaiyan ssjgoku = SupaSaiyan(name: 'Goku', power: 8000, level: 2);

  final Saiyan newWinner = ssjgoku.fight(broly);
  print('Winner is ${newWinner.name}');
  print(newWinner);
}