Class: Mjai::Manue::Player

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

Defined Under Namespace

Classes: DahaiEval, Scene

Instance Method Summary collapse

Constructor Details

#initialize(params) ⇒ Player

Returns a new instance of Player.



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# File 'lib/mjai/manue/player.rb', line 103

def initialize(params)
  super()
  @score_type = params[:score_type]
  data_dir = File.dirname(__FILE__) + "/../../../share"
  @danger_tree = DangerEstimator::DecisionTree.new("#{data_dir}/danger.all.tree")
  @hora_prob_estimator = HoraProbabilityEstimator.new("#{data_dir}/hora_prob.marshal")
end

Instance Method Details

#can_be_hora?(pais) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mjai/manue/player.rb', line 313

def can_be_hora?(pais)
  pai_set = to_pai_set(pais)
  kotsus = pai_set.select(){ |pai, c| c >= 3 }
  toitsus = pai_set.select(){ |pai, c| c >= 2 }
  num_cont = 1
  # TODO 重複を考慮
  num_shuntsus = 0
  pais.map(){ |pai| pai.remove_red() }.sort().uniq().each_cons(2) do |prev_pai, pai|
    if pai.type != "t" && pai.type == prev_pai.type && pai.number == prev_pai.number + 1
      num_cont += 1
      if num_cont >= 3
        num_shuntsus += 1
        num_cont = 0
      end
    else
      num_cont = 1
    end
  end
  return kotsus.size + num_shuntsus >= 4 && toitsus.size >= 1
end

#get_hora_prob_with_monte_carlo(tehais, visible_set, num_visible) ⇒ Object

This is too slow but left here as most precise baseline.



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# File 'lib/mjai/manue/player.rb', line 285

def get_hora_prob_with_monte_carlo(tehais, visible_set, num_visible)
  invisibles = []
  for pai in self.game.all_pais.uniq
    next if pai.red?
    (4 - visible_set[pai]).times() do
      invisibles.push(pai)
    end
  end
  num_tsumos = game.num_pipais / 4
  hora_freq = 0
  num_tries = 1000
  num_tries.times() do
    tsumos = invisibles.sample(num_tsumos)
    pais = tehais + tsumos
    #p [:pais, pais.sort().join(" ")]
    can_be = can_be_hora?(pais)
    #p [:can_be, can_be]
    next if !can_be
    shanten = ShantenAnalysis.new(pais, -1, [:normal], 14, false)
    #pp [:shanten, tehais, tsumos, shanten.shanten]
    #if shanten.shanten == -1
    #  pp [:comb, shanten.combinations[0]]
    #end
    hora_freq += 1 if shanten.shanten == -1
  end
  return hora_freq.to_f() / num_tries
end

#get_scene(params) ⇒ Object 



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# File 'lib/mjai/manue/player.rb', line 262

def get_scene(params)
  visible = []
  visible += self.game.dora_markers
  visible += self.tehais
  for player in self.game.players
    visible += player.ho + player.furos.map(){ |f| f.pais }.flatten()
  end
  visible_set = to_pai_set(visible)
  default_params = {
    :visible_set => visible_set,
    :context => self.context,
    :hora_prob_estimator => @hora_prob_estimator,
    :num_remain_turns => self.game.num_pipais / 4,
    :furos => self.furos,
    :score_type => @score_type,
    :player => self,
  }
  params = default_params.merge(params)
  # pp params.reject(){ |k, v| [:visible_set, :hora_prob_estimator, :context].include?(k) }
  return Scene.new(params)
end

#random_test ⇒ Object 



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# File 'lib/mjai/manue/player.rb', line 342

def random_test()
  all_pais = (["m", "p", "s"].map(){ |t| (1..9).map(){ |n| Pai.new(t, n) } }.flatten() +
      (1..7).map(){ |n| Pai.new("t", n) }) * 4
  while true
    pais = all_pais.sample(13).sort()
    puts(pais.join(" "))
    (nj, nm, jimp, mimp) = get_improvers(pais)
    p [nj, nm]
    for name, imp in [["jimp", jimp], ["mimp", mimp]]
      for pais in imp.to_a().sort()
        puts("%s: %s" % [name, pais.join(" ")])
      end
    end
    gets()
  end
end

#respond_to_action(action) ⇒ Object 



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# File 'lib/mjai/manue/player.rb', line 111

def respond_to_action(action)
  
  if !action.actor
    
    case action.type
      when :start_kyoku
        @prereach_sutehais_map = {}
    end
    
  elsif 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)
          return create_action({
              :type => :hora,
              :target => action.actor,
              :pai => action.pai,
          })
        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
        #p [:shanten, current_shanten]
        
        if current_shanten == 0
          sutehai_cands = self.possible_dahais
        else
          safe_probs = {}
          for pai in self.possible_dahais
            safe_probs[pai] = 1.0
          end
          has_reacher = false
          for player in self.game.players
            if player != self && player.reach?
              #p [:reacher, player, @prereach_sutehais_map[player]]
              has_reacher = true
              scene = DangerEstimator::Scene.new({
                  :game => self.game,
                  :me => self, 
                  :dapai => nil,
                  :reacher => player,
                  :prereach_sutehais => @prereach_sutehais_map[player],
              })
              for pai in safe_probs.keys
                if scene.anpai?(pai)
                  safe_prob = 1.0
                else
                  safe_prob = 1.0 - @danger_tree.estimate_prob(scene, pai)
                end
                safe_probs[pai] *= safe_prob
              end
            end
          end
          if has_reacher
            for pai, safe_prob in safe_probs
              #log("%s: safe_prob=%.3f\n" % [pai, safe_prob])
            end
          end
          max_safe_prob = safe_probs.values.max
          sutehai_cands = safe_probs.keys.select(){ |pai| safe_probs[pai] == max_safe_prob }
        end
        #p [:sutehai_cands, sutehai_cands]
        
        scene = get_scene({
            :current_shanten_analysis => current_shanten_analysis,
            :sutehai_cands => sutehai_cands,
        })
        
        #p [:dahai, scene.best_dahai]
        
        tsumogiri = [:tsumo, :reach].include?(action.type) &&
            scene.best_dahai == self.tehais[-1]
        return create_action({
            :type => :dahai,
            :pai => scene.best_dahai,
            :tsumogiri => tsumogiri,
        })
        
    end
    
  else  # action.actor != self
    
    case action.type
      when :dahai
        if self.can_hora?
          return create_action({
              :type => :hora,
              :target => action.actor,
              :pai => action.pai,
          })
        else
          furo_actions = self.possible_furo_actions
          if !furo_actions.empty? &&
              !self.game.players.any?(){ |pl| pl != self && pl.reach_state != :none }
            current_shanten_analysis = ShantenAnalysis.new(self.tehais, nil, [:normal])
            current_scene = get_scene({
                :current_shanten_analysis => current_shanten_analysis,
                :sutehai_cands => [nil],
            })
            current_expected_points = current_scene.evals[nil].expected_points
            for action in furo_actions
              next if action.type == :daiminkan  # TODO Implement later
              remains = self.tehais.dup()
              for pai in action.consumed
                remains.delete_at(remains.index(pai))
              end
              furo = Furo.new({
                  :type => action.type,
                  :taken => action.pai,
                  :consumed => action.consumed,
                  :target => action.target,
              })
              shanten_analysis_with_furo = ShantenAnalysis.new(remains, nil, [:normal])
              scene_with_furo = get_scene({
                  :current_shanten_analysis => shanten_analysis_with_furo,
                  :furos => self.furos + [furo],
                  :sutehai_cands => remains.uniq(),
              })
              best_eval =
                  scene_with_furo.best_dahais.
                  map(){ |pai| scene_with_furo.evals[pai] }.
                  max_by(){ |e| e.expected_points }
              expected_points_with_furo = best_eval.expected_points
              puts("furo_cand: %s" % action)
              puts("  shanten: %d -> %d" % [
                  current_shanten_analysis.shanten,
                  shanten_analysis_with_furo.shanten,
              ])
              puts("  ept: %d -> %d" % [current_expected_points, expected_points_with_furo])
              if expected_points_with_furo > current_expected_points
                #gets()  # kari
                return action
              end
            end
          end
        end
      when :reach_accepted
        @prereach_sutehais_map[action.actor] = action.actor.sutehais.dup()
    end
    
  end
  
  return nil
end

#to_pai_set(pais) ⇒ Object 



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# File 'lib/mjai/manue/player.rb', line 334

def to_pai_set(pais)
  pai_set = Hash.new(0)
  for pai in pais
    pai_set[pai.remove_red()] += 1
  end
  return pai_set
end