ECARD from KAIJI

ecard.rb

require 'pry'

module ECard

  class Game
    attr_reader :players
    def initialize
      @players = [ Player.new(:emperor), Player.new(:slave) ]
    end

    def fight
      compare(@players.first.select, @players.last.select)
    end

    def compare(a,b)
      if a.role_point * b.role_point == -1
        return -1
      else
        a.role_point <=> b.role_point
      end
    end
  end

  class Player
    attr_reader :cards
    def initialize(role)
      @cards = [ Card.new(role)]
      4.times{ @cards << Card.new(:citizen) }
    end

    def select
      @cards.shuffle!.pop
    end

  end

  class Card
    attr_reader :role
    def initialize(role)
      @role = role
    end

    def role_point
      {
        :emperor => 1,
        :citizen => 0,
        :slave => -1
      }.fetch(@role)
    end

  end
end

binding.pry