Class: TicTacToe::Board

Inherits:
Object
  • Object
show all
Defined in:
lib/ttt/board.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Board

Returns a new instance of Board.



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# File 'lib/ttt/board.rb', line 5

def initialize
  @spaces = %w[1 2 3 4 5 6 7 8 9]
  winning_solutions
end

Instance Attribute Details

#solutions ⇒ Object

Returns the value of attribute solutions.



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# File 'lib/ttt/board.rb', line 3

def solutions
  @solutions
end

#spaces ⇒ Object

Returns the value of attribute spaces.



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# File 'lib/ttt/board.rb', line 3

def spaces
  @spaces
end

Class Method Details

.parse(board) ⇒ Object 



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# File 'lib/ttt/board.rb', line 10

def self.parse(board)
  new_board_for_translation = self.new
  translated_board_spaces = []
  new_spaces_for_translation = board.split('')
  new_spaces_for_translation.each_index do |index|
    if new_spaces_for_translation[index] == '_' || new_spaces_for_translation[index].to_i != 0
      translated_board_spaces << (index + 1).to_s
    else
      translated_board_spaces << new_spaces_for_translation[index]
    end
  end
  new_board_for_translation.spaces = translated_board_spaces
  new_board_for_translation
end

Instance Method Details

#empty_spaces ⇒ Object 



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# File 'lib/ttt/board.rb', line 77

def empty_spaces
  @spaces.select { |x| x.to_i != 0}
end

#full_board? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ttt/board.rb', line 51

def full_board?
  (@spaces.count { |x| x == 'X' } + @spaces.count { |x| x == 'O' }) == 9
end

#get(space) ⇒ Object 



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# File 'lib/ttt/board.rb', line 29

def get(space)
  @spaces[(space.to_i)-1]
end

#has_winner? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ttt/board.rb', line 59

def has_winner?
  @solutions.find { |sol| is_solution_found?(sol)}
end

#is_board_empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ttt/board.rb', line 55

def is_board_empty?
  !@spaces.include?("X") && !@spaces.include?("O")
end

#is_solution_found?(spaces) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ttt/board.rb', line 63

def is_solution_found?(spaces)
  spaces.map { |s| @spaces[s-1]}.uniq.length == 1 
end

#is_space_taken?(space) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ttt/board.rb', line 43

def is_space_taken?(space)
  @spaces[(space.to_i) - 1].to_i == 0
end

#place_move(piece, *indices) ⇒ Object 



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# File 'lib/ttt/board.rb', line 33

def place_move(piece, *indices)
  indices.each do |space|
    @spaces[(space.to_i)-1] = piece
  end
end

#tied_game? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ttt/board.rb', line 47

def tied_game?
  full_board? && !has_winner?
end

#to_s ⇒ Object 



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# File 'lib/ttt/board.rb', line 25

def to_s
  @spaces.join
end

#translate_board_to_string ⇒ Object 



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# File 'lib/ttt/board.rb', line 67

def translate_board_to_string 
  @spaces.reduce("") do |blank_spaces, spaces|
    if !spaces.to_i.zero?
      blank_spaces << '_'
    else
      blank_spaces << spaces
    end
  end
end

#undo_move(space) ⇒ Object 



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# File 'lib/ttt/board.rb', line 39

def undo_move(space)
  @spaces[(space.to_i)-1] = space.to_s
end

#winner ⇒ Object 



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# File 'lib/ttt/board.rb', line 87

def winner
  winner = ""
  @solutions.each { |sol| winner = @spaces[sol[0]-1] if is_solution_found?(sol)}
  winner
end

#winning_solutions ⇒ Object 



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# File 'lib/ttt/board.rb', line 81

def winning_solutions
  @solutions = [[1,2,3], [4,5,6], [7,8,9],
                [1,4,7], [2,5,8], [3,6,9],
                [1,5,9], [3,5,7]]
end