Class: Board

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(player_one, player_two) ⇒ Board

Returns a new instance of Board.



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

def initialize(player_one, player_two)
  @cells = [empty_spot]*9
  @player_one = player_one
  @player_two = player_two
end

Instance Attribute Details

#cells ⇒ Object

Returns the value of attribute cells.



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

def cells
  @cells
end

#player_one ⇒ Object

Returns the value of attribute player_one.



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

def player_one
  @player_one
end

#player_two ⇒ Object

Returns the value of attribute player_two.



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

def player_two
  @player_two
end

Instance Method Details

#blocking_group_for(team) ⇒ Object 



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# File 'lib/nick_tac_toe/board.rb', line 70

def blocking_group_for(team)
  3.times do |i| # rows
    return [3*i, 3*i + 1, 3*i + 2] if rows[i].sort == [empty_spot, opponent_for(team), opponent_for(team)]
  end

  3.times do |i| # columns
    return [i, i + 3, i + 6] if columns[i].sort == [empty_spot, opponent_for(team), opponent_for(team)]
  end
  
  return [0, 4, 8] if diagonals[0].sort == [empty_spot, opponent_for(team), opponent_for(team)]
  return [2, 4, 6] if diagonals[1].sort == [empty_spot, opponent_for(team), opponent_for(team)]

  return nil
end

#center ⇒ Object 



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# File 'lib/nick_tac_toe/board.rb', line 96

def center
  4
end

#columns ⇒ Object 



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# File 'lib/nick_tac_toe/board.rb', line 45

def columns
  [
    [@cells[0], @cells[3], @cells[6]],
    [@cells[1], @cells[4], @cells[7]],
    [@cells[2], @cells[5], @cells[8]]
  ]
end

#copy ⇒ Object 



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# File 'lib/nick_tac_toe/board.rb', line 126

def copy
  new_board = self.dup
  new_board.cells = @cells.dup
#   new_board.player_one = @player_one.dup
#   new_board.player_one = @player_two.dup
  return new_board
end

#diagonals ⇒ Object 



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# File 'lib/nick_tac_toe/board.rb', line 53

def diagonals
  [
    [@cells[0], @cells[4], @cells[8]],
    [@cells[2], @cells[4], @cells[6]],
  ]
end

#empty_at_center? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/nick_tac_toe/board.rb', line 100

def empty_at_center?
  get_cell(4) == empty_spot
end

#empty_spot_in_group(group) ⇒ Object 



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# File 'lib/nick_tac_toe/board.rb', line 85

def empty_spot_in_group(group)
  empty_spots = group.select do |position|
    get_cell(position) == empty_spot
  end
  return empty_spots.first
end

#first_empty_cell ⇒ Object 



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# File 'lib/nick_tac_toe/board.rb', line 104

def first_empty_cell
  @cells.each_with_index do |cell, index|
    return index if cell == empty_spot
  end
end

#get_cell(position) ⇒ Object 



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

def get_cell position
  @cells[position]
end

#opponent_for(team) ⇒ Object 



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# File 'lib/nick_tac_toe/board.rb', line 110

def opponent_for(team)
  if team == @player_one
    return @player_two
  else
    return @player_one
  end
end

#print ⇒ Object 



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# File 'lib/nick_tac_toe/board.rb', line 11

def print
  list = []
  cells.each_with_index do |marker, index|
    if marker == empty_spot
      list << index+1
    else
      list << marker
    end
  end
  list.map! do |m|
    case m
    when 'x'
      "\e[1;36mx\e[0m"
    when 'o'
      "\e[1;33mo\e[0m"
    else
      "\e[1;30m#{m}\e[0m"
    end
  end
  puts "\n#{list[0]} | #{list[1]} | #{list[2]}\n----------\n#{list[3]} | #{list[4]} | #{list[5]}\n----------\n#{list[6]} | #{list[7]} | #{list[8]}\n "
end

#remaining_moves ⇒ Object 



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# File 'lib/nick_tac_toe/board.rb', line 118

def remaining_moves
  count = []
  9.times do |index|
    count << index if @cells[index] == empty_spot
  end
  return count
end

#rows ⇒ Object 



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# File 'lib/nick_tac_toe/board.rb', line 41

def rows
  [@cells[0..2], @cells[3..5], @cells[6..8]]
end

#set_cell(position, team) ⇒ Object 



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# File 'lib/nick_tac_toe/board.rb', line 37

def set_cell position, team
  @cells[position] = team
end

#valid_move?(position) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/nick_tac_toe/board.rb', line 60

def valid_move?(position)
  if [0,1,2,3,4,5,6,7,8].include?(position.to_i-1)
    if get_cell(position-1) == empty_spot
      return true
    end
  else
    return false
  end
end

#winning_group_for(team) ⇒ Object 



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# File 'lib/nick_tac_toe/board.rb', line 92

def winning_group_for(team)
  blocking_group_for(opponent_for(team))
end