じゃんけんシミュレーター(作成中)

rsp_simulation.rb

# 定数
HAND = ["p", "r", "s"] # r:グー、s:チョキ、p:パー

class Player
    attr_accessor :id, :hand, :lose_flg, :rank

    def initialize(id)
       @id       = id
       @hand     = ""
       @lose_flg = false
       @rank     = nil
    end
   
   def reset
       set_hand
       @lose_flg = false
   end
   
    def set_hand
       @hand = HAND[rand(3)]
    end

end

def judge(hands)
    case hands.sort
        when ["p","r"] then HAND[0] # パー VS グー
        when ["p","s"] then HAND[2] # パー VS チョキ
        when ["r","s"] then HAND[1] # グー VS チョキ 
    end
end

# じゃんけんメソッド
# input  : players(参加者)
# output : 勝った参加者、負けた参加者
def battle(players)
    
    # 手の初期化
    players.each{ |player| player.reset }
    hands = players.map{ |player| player.hand }
    
    # 出された手が一種類または3種類の場合は、再実行(あいこ)
    if hands.uniq.length == 2
        win_hand = judge(hands.uniq)
        players.each{ |player| player.lose_flg = true unless player.hand == win_hand }
    else
        battle(players)
    end
    
    # 勝ち組と負け組みに分ける
    win_g = players.select{ |player| !player.lose_flg && !player.rank }
    lose_g = players.select{ |player| player.lose_flg && !player.rank }
    
    # return { win_g: win_g, lose_g: lose_g }
    return win_g

end

rank_cnt = 1
continue_flg = true
players = []

hands = []
player_N, simulation_N = gets.to_i, gets.to_i
player_N.times { |i| players << Player.new(i) }
i = 0
while !players.select{ |player| !player.rank }.empty?
    players = players.select{ |player| !player.rank }
    result = battle(players)
    if result.length == 1
        champ = result[0]
        players[champ.id].rank = rank_cnt
        rank_cnt += 1
    end
    
end

p players