Tic Tac Toe Ruby

ttt.rb

ran_num = rand(0..1)
if ran_num == 0
  PLAYER = "X"
  COMPUTER = "O"
  @turn = :player
else
  PLAYER = "O"
  COMPUTER = "X"
  @turn = :computer
end

puts "Tic Tac Toe, 3 in a Row!"
AVAILABLE_SQUARES =* (1..9)

ROW_A = { 1 => nil, 2 => nil, 3 => nil }
ROW_B = { 1 => nil, 2 => nil, 3 => nil }
ROW_C = { 1 => nil, 2 => nil, 3 => nil }
ROWS = [ROW_A, ROW_B, ROW_C]

def print_board
  puts "Board       Available"
  puts " _ _ _       _ _ _"
  count = 0
  ROWS.each do |row|
    count += 1
    row.each do |column, value|
      if value == nil
        print "|_"
      elsif value == "O"
        print "|O"
      else
        print "|X"
      end
    end
    print "|     "
    (1..3).each do |i|
      if count == 1
        if ROW_A[i] == nil
          print "|#{i+6}"
        else
          print "|_"
        end
      elsif count == 2
        if ROW_B[i] == nil
          print "|#{i+3}"
        else
          print "|_"
        end
      elsif count == 3
        if ROW_C[i] == nil
          print "|#{i}"
        else
          print "|_"
        end
      end
    end
  puts "|\r\n"
  end
end

def spot_valid?(location)
  if location == nil
    true
  else
    false
  end
end

def spot_taken?(spot)
  if AVAILABLE_SQUARES.include?(spot) == false
    true
  else
    AVAILABLE_SQUARES.delete(spot)
    false
  end
end

def place_choice(spot)
  if spot_taken?(spot) == true
    puts "That square can not be used."
  elsif spot.between?(1,9)
    puts "#{@turn.capitalize} chose square: #{spot}"
    if spot > 3 && spot < 7
      loc = ROW_B
      spot -= 3
    elsif spot >= 7
      loc = ROW_A
      spot -= 6
    else
      loc = ROW_C
    end
    if @turn == :player
      loc[spot] = PLAYER
      @turn = :computer
    else
      loc[spot] = COMPUTER
      @turn = :player
    end
  end
end

def win_horizontal?
  cur_row = 0
  ROWS.compact.each do |row|
    cur_row += 1
    if row.values.compact.length == 3 && row.values.uniq.length == 1
      if PLAYER == row.values[0]
        puts "Player playing as #{row.values[0]}'s won horizontally on row: #{cur_row}"
      else
        puts "Computer playing as #{row.values[0]}'s won horizontally on row: #{cur_row}"
      end
      return true
    end
  end
end

def win_vertical?
  (0..2).each do |i|
    if ROW_A.values[i] != nil && ROW_A.values[i] == ROW_B.values[i]
      if ROW_B.values[i] == ROW_C.values[i]
        if PLAYER == ROW_C.values[i]
          puts "Player playing as #{ROW_A.values[i]}'s won vertically on column #{i+1}"
        else
          puts "Computer playing as #{ROW_A.values[i]}'s won vertically on column #{i+1}"
        end
        return true
      end
    end
  end
end

def win_diagonal?

  if ROW_A.values[0] != nil
    if ROW_A.values[0] == ROW_B.values[1] && ROW_B.values[1] == ROW_C.values[2]
      if PLAYER == ROW_A.values[0]
        puts "Player playing as #{ROW_A.values[0]}'s won diagonally with squares 1, 5, and 9"
      else
        puts "Computer playing as #{ROW_A.values[0]}'s won diagonally with squares 1, 5, and 9"
      end
      return true
    end
  end

  if ROW_C.values[0] != nil
    if ROW_C.values[0] == ROW_B.values[1] && ROW_B.values[1] == ROW_A.values[2]
      if PLAYER == ROW_C.values[0]
        puts "Player playing as #{ROW_C.values[0]}'s won diagonally with squares 3, 5, and 7"
      else
        puts "Computer playing as #{ROW_A.values[0]}'s won diagonally with squares 1, 5, and 9"
      end
      return true
    end
  end
end

def game_status
  wins = [win_horizontal?, win_diagonal?, win_vertical?]
  if wins.include?(true) || AVAILABLE_SQUARES.length == 0
    return :over
  end
  puts "Available Squares: #{AVAILABLE_SQUARES}"
end

puts "You are #{PLAYER}'s"
print_board
until game_status == :over
  if @turn == :player
    print "Square Choice: "
    spot = gets.chomp
  else
    spot = AVAILABLE_SQUARES[rand(0..AVAILABLE_SQUARES.size-1)]
  end
  place_choice(spot.to_i)
  print_board
end