Class: Mjai::ShantenPlayer

Inherits:
Player
  • Object
show all
Defined in:
lib/mjai/shanten_player.rb

Instance Attribute Summary

Attributes inherited from Player

#attributes, #extra_anpais, #furos, #game, #ho, #id, #name, #reach_ho_index, #reach_state, #score, #sutehais, #tehais

Instance Method Summary collapse

Methods inherited from Player

#anpais, #can_hora?, #can_reach?, #can_ryukyoku?, #context, #create_action, #delete_tehai, #double_reach?, #furiten?, #get_pais_combinations, #inspect, #ippatsu_chance?, #jikaze, #kuikae_dahais, #possible_actions, #possible_dahais, #possible_dahais_after_furo, #possible_furo_actions, #rank, #reach?, #rinshan?, #tenpai?, #update_state

Constructor Details

#initialize(params) ⇒ ShantenPlayer

Returns a new instance of ShantenPlayer.



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# File 'lib/mjai/shanten_player.rb', line 10

def initialize(params)
  super()
  @use_furo = params[:use_furo]
end

Instance Method Details

#respond_to_action(action) ⇒ Object 



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# File 'lib/mjai/shanten_player.rb', line 15

def respond_to_action(action)
  
  if action.actor == self
    
    case action.type
      
      when :tsumo, :chi, :pon, :reach
        
        current_shanten_analysis = ShantenAnalysis.new(self.tehais, nil, [:normal])
        current_shanten = current_shanten_analysis.shanten
        if can_hora?(current_shanten_analysis)
          if @use_furo
            return create_action({:type => :dahai, :pai => action.pai, :tsumogiri => true})
          else
            return create_action({
                :type => :hora,
                :target => action.actor,
                :pai => action.pai,
            })
          end
        elsif can_reach?(current_shanten_analysis)
          return create_action({:type => :reach})
        elsif self.reach?
          return create_action({:type => :dahai, :pai => action.pai, :tsumogiri => true})
        end
        
        # Ankan, kakan
        furo_actions = self.possible_furo_actions
        if !furo_actions.empty?
          return furo_actions[0]
        end
        
        sutehai_cands = []
        for pai in self.possible_dahais
          remains = self.tehais.dup()
          remains.delete_at(self.tehais.index(pai))
          if ShantenAnalysis.new(remains, current_shanten, [:normal]).shanten ==
              current_shanten
            sutehai_cands.push(pai)
          end
        end
        if sutehai_cands.empty?
          sutehai_cands = self.possible_dahais
        end
        #log("sutehai_cands = %p" % [sutehai_cands])
        sutehai = sutehai_cands[rand(sutehai_cands.size)]
        tsumogiri = [:tsumo, :reach].include?(action.type) && sutehai == self.tehais[-1]
        return create_action({:type => :dahai, :pai => sutehai, :tsumogiri => tsumogiri})
        
    end
    
  else  # action.actor != self
    
    case action.type
      when :dahai
        if self.can_hora?
          if @use_furo
            return nil
          else
            return create_action({
                :type => :hora,
                :target => action.actor,
                :pai => action.pai,
            })
          end
        elsif @use_furo
          furo_actions = self.possible_furo_actions
          if !furo_actions.empty?
            return furo_actions[0]
          end
        end
    end
    
  end
  
  return nil
end