class RoundGame
  ROUND_NUMBER_START = 1

  def initialize(round_count, game)
    @round_count = round_count
    @game        = game
  end

  def each_round(&round)
    @round = round
  end

  def rounds
    @round_count.times
  end

  def start
    @results = rounds.map do
      @round.call(@game) if @round
      @game.result
    end
  end

  def result_with_index
    @results.map.with_index(ROUND_NUMBER_START) do |result, n|
      "#{n}回戦の結果は・・・#{result}"
    end.join("\n")
  end

  def decoration_line
    "******************************************"
  end

  def describe_result
    <<RESULT
#{decoration_line}
対戦結果は・・・
#{result_with_index}
RESULT
  end
end