Rbot Plugin for Blackjack

class RussianBlackjack < Plugin

 def initialize
    super
   @player = 0
   @bot = 0
   end

  def help(plugin, topic="")
        "Russian variant of Blackjack."
  end

  def card_check(card)
    case card
    when 5..10
      card
    when 2
      "Jacket"
    when 3
      "Queen"
    when 4
      "King"
    when 11
      "Ace"
    end
  end

  def game(m, params)
    if params[:stop] == "stop"
      if @player > @bot
        m.reply "You win!"
         @player = @bot = 0
        return
      end
    end
    player = bot = 0
    player = rand(2..11)
    @player += player
    m.reply "You have #{card_check(player)}. Total:#{@player}"
    if @bot == 0
      bot = rand(2..11)
      @bot += bot
      m.reply "I have #{card_check(bot)}. Total:#{@bot}"
    elsif rand(2) == 1
      bot = rand(2..11)
      @bot += bot
      m.reply "I have #{card_check(bot)}. Total:#{@bot}"
    else
      m.reply "Pass"
    end
    if @player > 21 && @bot < @player
      m.reply "You lost!"
      @player = @bot = 0
    end
    if @bot > 21 && @player < @bot || @player == 21
      m.reply "You win!"
      @player = @bot = 0
    end
  end
end

plugin = RussianBlackjack.new
plugin.map "rbj", :action => :game, :thread => "yes"
plugin.map "rbj :stop", :action => :game, :requirements => {:stop => /stop/}, :thread => "yes"