Class: MCTS::Examples::DoubleStep

Inherits:
Object
  • Object
show all
Defined in:
lib/mcts/examples/double_step.rb

Constant Summary collapse

FINAL_POSITION = 
6
MAX_STEP = 
2

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(positions = init_positions, n = 0) ⇒ DoubleStep

Returns a new instance of DoubleStep.



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# File 'lib/mcts/examples/double_step.rb', line 10

def initialize(positions = init_positions, n = 0)
  @positions = positions
  @move_count = n
end

Instance Attribute Details

#positions ⇒ Object (readonly)

Returns the value of attribute positions.



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# File 'lib/mcts/examples/double_step.rb', line 8

def positions
  @positions
end

Instance Method Details

#all_valid_moves ⇒ Object 



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# File 'lib/mcts/examples/double_step.rb', line 38

def all_valid_moves
  if finished?
    []
  else
    [1, 2]
  end
end

#dup ⇒ Object 



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# File 'lib/mcts/examples/double_step.rb', line 29

def dup
  self.class.new @positions.dup, @move_count
end

#finished? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mcts/examples/double_step.rb', line 15

def finished?
  @positions.any? {|_color, position| position >= FINAL_POSITION }
end

#generate_move ⇒ Object 



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# File 'lib/mcts/examples/double_step.rb', line 19

def generate_move
  rand(MAX_STEP) + 1
end

#last_turn_color ⇒ Object 



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# File 'lib/mcts/examples/double_step.rb', line 46

def last_turn_color
  @move_count.odd? ? :black : :white
end

#set_move(move) ⇒ Object 



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# File 'lib/mcts/examples/double_step.rb', line 23

def set_move(move)
  steps = move
  @positions[next_turn_color] += steps
  @move_count += 1
end

#won?(color) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mcts/examples/double_step.rb', line 33

def won?(color)
  fail "Game not finished" unless finished?
  @positions[color] > @positions[other_color(color)]
end