Class: Mjai::Player

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#attributes ⇒ Object (readonly)

Returns the value of attribute attributes.



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# File 'lib/mjai/player.rb', line 19

def attributes
  @attributes
end

#extra_anpais ⇒ Object (readonly)

sutehais以外のこのプレーヤに対する安牌



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# File 'lib/mjai/player.rb', line 16

def extra_anpais
  @extra_anpais
end

#furos ⇒ Object (readonly)

副露



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# File 'lib/mjai/player.rb', line 13

def furos
  @furos
end

#game ⇒ Object

Returns the value of attribute game.



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# File 'lib/mjai/player.rb', line 21

def game
  @game
end

#ho ⇒ Object (readonly)

河 (鳴かれた牌を含まない)



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# File 'lib/mjai/player.rb', line 14

def ho
  @ho
end

#id ⇒ Object (readonly)

Returns the value of attribute id.



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# File 'lib/mjai/player.rb', line 11

def id
  @id
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/mjai/player.rb', line 20

def name
  @name
end

#reach_ho_index ⇒ Object (readonly)

Returns the value of attribute reach_ho_index.



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# File 'lib/mjai/player.rb', line 18

def reach_ho_index
  @reach_ho_index
end

#reach_state ⇒ Object (readonly)

Returns the value of attribute reach_state.



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# File 'lib/mjai/player.rb', line 17

def reach_state
  @reach_state
end

#score ⇒ Object

Returns the value of attribute score.



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# File 'lib/mjai/player.rb', line 22

def score
  @score
end

#sutehais ⇒ Object (readonly)

捨牌 (鳴かれた牌を含む)



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

def sutehais
  @sutehais
end

#tehais ⇒ Object (readonly)

手牌



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# File 'lib/mjai/player.rb', line 12

def tehais
  @tehais
end

Instance Method Details

#anpais ⇒ Object 



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# File 'lib/mjai/player.rb', line 24

def anpais
  return @sutehais + @extra_anpais
end

#can_hora?(shanten_analysis = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mjai/player.rb', line 177

def can_hora?(shanten_analysis = nil)
  action = @game.current_action
  if action.type == :tsumo && action.actor == self
    hora_type = :tsumo
    pais = @tehais
  elsif [:dahai, :kakan].include?(action.type) && action.actor != self
    hora_type = :ron
    pais = @tehais + [action.pai]
  else
    return false
  end
  shanten_analysis ||= ShantenAnalysis.new(pais, -1)
  hora_action =
      create_action({:type => :hora, :target => action.actor, :pai => pais[-1]})
  return shanten_analysis.shanten == -1 &&
      @game.get_hora(hora_action, {:previous_action => action}).valid? &&
      (hora_type == :tsumo || !self.furiten?)
end

#can_reach?(shanten_analysis = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mjai/player.rb', line 166

def can_reach?(shanten_analysis = nil)
  shanten_analysis ||= ShantenAnalysis.new(@tehais, 0)
  return @game.current_action.type == :tsumo &&
      @game.current_action.actor == self &&
      shanten_analysis.shanten <= 0 &&
      @furos.empty? &&
      !self.reach? &&
      self.game.num_pipais >= 4 &&
      @score >= 1000
end

#can_ryukyoku? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mjai/player.rb', line 196

def can_ryukyoku?
  return @game.current_action.type == :tsumo &&
      @game.current_action.actor == self &&
      @game.first_turn? &&
      @tehais.select(){ |pai| pai.yaochu? }.uniq().size >= 9
end

#context ⇒ Object 



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# File 'lib/mjai/player.rb', line 379

def context
  return Context.new({
    :oya => self == self.game.oya,
    :bakaze => self.game.bakaze,
    :jikaze => self.jikaze,
    :doras => self.game.doras,
    :uradoras => [],  # TODO
    :reach => self.reach?,
    :double_reach => false,  # TODO
    :ippatsu => false,  # TODO
    :rinshan => false,  # TODO
    :haitei => self.game.num_pipais == 0,
    :first_turn => false,  # TODO
    :chankan => false,  # TODO
  })
end

#create_action(params = {}) ⇒ Object 



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# File 'lib/mjai/player.rb', line 402

def create_action(params = {})
  return Action.new({:actor => self}.merge(params))
end

#delete_tehai(pai) ⇒ Object 



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# File 'lib/mjai/player.rb', line 396

def delete_tehai(pai)
  pai_index = @tehais.index(pai) || @tehais.index(Pai::UNKNOWN)
  raise("trying to delete %p which is not in tehais: %p" % [pai, @tehais]) if !pai_index
  @tehais.delete_at(pai_index)
end

#double_reach? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mjai/player.rb', line 32

def double_reach?
  return @double_reach
end

#furiten? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mjai/player.rb', line 157

def furiten?
  return false if @tehais.size % 3 != 1
  return false if @tehais.include?(Pai::UNKNOWN)
  tenpai_info = TenpaiAnalysis.new(@tehais)
  return false if !tenpai_info.tenpai?
  anpais = self.anpais
  return tenpai_info.waited_pais.any?(){ |pai| anpais.include?(pai) }
end

#get_pais_combinations(target_pais, source_pais) ⇒ Object 



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# File 'lib/mjai/player.rb', line 305

def get_pais_combinations(target_pais, source_pais)
  return Set.new([[]]) if target_pais.empty?
  result = Set.new()
  for pai in source_pais.select(){ |pai| target_pais[0].same_symbol?(pai) }.uniq
    new_source_pais = source_pais.dup()
    new_source_pais.delete_at(new_source_pais.index(pai))
    for cdr_pais in get_pais_combinations(target_pais[1..-1], new_source_pais)
      result.add(([pai] + cdr_pais).sort())
    end
  end
  return result
end

#inspect ⇒ Object 



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# File 'lib/mjai/player.rb', line 410

def inspect
  return "\#<%p:%p>" % [self.class, self.id]
end

#ippatsu_chance? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mjai/player.rb', line 36

def ippatsu_chance?
  return @ippatsu_chance
end

#jikaze ⇒ Object 



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# File 'lib/mjai/player.rb', line 145

def jikaze
  if @game.oya
    return Pai.new("t", 1 + (4 + @id - @game.oya.id) % 4)
  else
    return nil
  end
end

#kuikae_dahais(action = @game.current_action, tehais = @tehais) ⇒ Object 



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# File 'lib/mjai/player.rb', line 347

def kuikae_dahais(action = @game.current_action, tehais = @tehais)
  consumed = action.consumed ? action.consumed.sort() : nil
  if action.type == :chi && action.actor == self
    if consumed[1].number == consumed[0].number + 1
      forbidden_rnums = [-1, 2]
    else
      forbidden_rnums = [1]
    end
  elsif action.type == :pon && action.actor == self
    forbidden_rnums = [0]
  else
    forbidden_rnums = []
  end
  if forbidden_rnums.empty?
    return []
  else
    key_pai = consumed[0]
    return tehais.uniq().select() do |pai|
      pai.type == key_pai.type &&
          forbidden_rnums.any?(){ |rn| key_pai.number + rn == pai.number }
    end
  end
end

#possible_actions ⇒ Object

Possible actions except for dahai.



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# File 'lib/mjai/player.rb', line 204

def possible_actions
  action = @game.current_action
  result = []
  if (action.type == :tsumo && action.actor == self) ||
      ([:dahai, :kakan].include?(action.type) && action.actor != self)
    if can_hora?
      result.push(create_action({
          :type => :hora,
          :target => action.actor,
          :pai => action.pai,
      }))
    end
    if can_reach?
      result.push(create_action({:type => :reach}))
    end
    if can_ryukyoku?
      result.push(create_action({:type => :ryukyoku, :reason => :kyushukyuhai}))
    end
  end
  result += self.possible_furo_actions
  return result
end

#possible_dahais(action = @game.current_action, tehais = @tehais) ⇒ Object 



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# File 'lib/mjai/player.rb', line 318

def possible_dahais(action = @game.current_action, tehais = @tehais)

  if self.reach? && action.type == :tsumo && action.actor == self

    # Only tsumogiri is allowed after reach.
    return [action.pai]

  elsif action.type == :reach

    # Tehais after the dahai must be tenpai just after reach.
    result = []
    for pai in tehais.uniq()
      pais = tehais.dup()
      pais.delete_at(pais.index(pai))
      if ShantenAnalysis.new(pais, 0).shanten <= 0
        result.push(pai)
      end
    end
    return result

  else

    # Excludes kuikae.
    return tehais.uniq() - kuikae_dahais(action, tehais)

  end

end

#possible_dahais_after_furo(action) ⇒ Object 



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# File 'lib/mjai/player.rb', line 371

def possible_dahais_after_furo(action)
  remains = @tehais.dup()
  for pai in action.consumed
    remains.delete_at(remains.index(pai))
  end
  return possible_dahais(action, remains)
end

#possible_furo_actions ⇒ Object 



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# File 'lib/mjai/player.rb', line 227

def possible_furo_actions
  
  action = @game.current_action
  result = []
  
  if action.type == :dahai &&
      action.actor != self &&
      !self.reach? &&
      @game.num_pipais > 0
    
    if @game.can_kan?
      for consumed in get_pais_combinations([action.pai] * 3, @tehais)
        result.push(create_action({
          :type => :daiminkan,
          :pai => action.pai,
          :consumed => consumed,
          :target => action.actor
        }))
      end
    end
    for consumed in get_pais_combinations([action.pai] * 2, @tehais)
      result.push(create_action({
        :type => :pon,
        :pai => action.pai,
        :consumed => consumed,
        :target => action.actor
      }))
    end
    if (action.actor.id + 1) % 4 == self.id && action.pai.type != "t"
      for i in 0...3
        target_pais = (((-i)...(-i + 3)).to_a() - [0]).map() do |j|
          Pai.new(action.pai.type, action.pai.number + j)
        end
        for consumed in get_pais_combinations(target_pais, @tehais)
          result.push(create_action({
            :type => :chi,
            :pai => action.pai,
            :consumed => consumed,
            :target => action.actor,
          }))
        end
      end
    end
    # Excludes furos which forces kuikae afterwards.
    result = result.select() do |a|
      a.type == :daiminkan || !possible_dahais_after_furo(a).empty?
    end
    
  elsif action.type == :tsumo &&
      action.actor == self &&
      @game.num_pipais > 0 &&
      @game.can_kan?
    
    for pai in self.tehais.uniq
      same_pais = self.tehais.select(){ |tp| tp.same_symbol?(pai) }
      if same_pais.size >= 4
        if self.reach?
          orig_tenpai = TenpaiAnalysis.new(self.tehais[0...-1])
          new_tenpai = TenpaiAnalysis.new(
              self.tehais.select(){ |tp| !tp.same_symbol?(pai) })
          ok = new_tenpai.tenpai? && new_tenpai.waited_pais == orig_tenpai.waited_pais
        else
          ok = true
        end
        result.push(create_action({:type => :ankan, :consumed => same_pais})) if ok
      end
      pon = self.furos.find(){ |f| f.type == :pon && f.taken.same_symbol?(pai) }
      if pon
        result.push(create_action({:type => :kakan, :pai => pai, :consumed => pon.pais}))
      end
    end
    
  end
  
  return result
  
end

#rank ⇒ Object 



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# File 'lib/mjai/player.rb', line 406

def rank
  return @game.ranked_players.index(self) + 1
end

#reach? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mjai/player.rb', line 28

def reach?
  return @reach_state == :accepted
end

#rinshan? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mjai/player.rb', line 40

def rinshan?
  return @rinshan
end

#tenpai? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mjai/player.rb', line 153

def tenpai?
  return ShantenAnalysis.new(@tehais, 0).shanten <= 0
end

#update_state(action) ⇒ Object 



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# File 'lib/mjai/player.rb', line 44

def update_state(action)
  
  if @game.previous_action &&
      @game.previous_action.type == :dahai &&
      @game.previous_action.actor != self &&
      action.type != :hora
    @extra_anpais.push(@game.previous_action.pai)
  end
  
  case action.type
    when :start_game
      @id = action.id
      @name = action.names[@id] if action.names
      @score = 25000
      @attributes = OpenStruct.new()
      @tehais = nil
      @furos = nil
      @ho = nil
      @sutehais = nil
      @extra_anpais = nil
      @reach_state = nil
      @reach_ho_index = nil
      @double_reach = false
      @ippatsu_chance = false
      @rinshan = false
    when :start_kyoku
      @tehais = action.tehais[self.id]
      @furos = []
      @ho = []
      @sutehais = []
      @extra_anpais = []
      @reach_state = :none
      @reach_ho_index = nil
      @double_reach = false
      @ippatsu_chance = false
      @rinshan = false
    when :chi, :pon, :daiminkan, :kakan, :ankan
      @ippatsu_chance = false
  end
  
  if action.actor == self
    case action.type
      when :tsumo
        @tehais.push(action.pai)
      when :dahai
        delete_tehai(action.pai)
        @tehais.sort!()
        @ho.push(action.pai)
        @sutehais.push(action.pai)
        @ippatsu_chance = false
        @rinshan = false
        @extra_anpais.clear() if !self.reach?
      when :chi, :pon, :daiminkan, :ankan
        for pai in action.consumed
          delete_tehai(pai)
        end
        @furos.push(Furo.new({
          :type => action.type,
          :taken => action.pai,
          :consumed => action.consumed,
          :target => action.target,
        }))
        if [:daiminkan, :ankan].include?(action.type)
          @rinshan = true
        end
      when :kakan
        delete_tehai(action.pai)
        pon_index =
            @furos.index(){ |f| f.type == :pon && f.taken.same_symbol?(action.pai) }
        raise("should not happen") if !pon_index
        @furos[pon_index] = Furo.new({
          :type => :kakan,
          :taken => @furos[pon_index].taken,
          :consumed => @furos[pon_index].consumed + [action.pai],
          :target => @furos[pon_index].target,
        })
        @rinshan = true
      when :reach
        @reach_state = :declared
        @double_reach = true if @game.first_turn?
      when :reach_accepted
        @reach_state = :accepted
        @reach_ho_index = @ho.size - 1
        @ippatsu_chance = true
    end
  end
  
  if action.target == self
    case action.type
      when :chi, :pon, :daiminkan
        pai = @ho.pop()
        raise("should not happen") if pai != action.pai
    end
  end
  
  if action.scores
    @score = action.scores[self.id]
  end
  
end