mim ajuda

mim_ajuda.rb

require 'matrix'
class Matrix
  def []=(i, j, x)
    @rows[i][j] = x
  end
end

class String # Only works for single letters; could be extended to uppercase letters too
  def step(c, delta=1)
    if c.ord + delta > 122 then
      return [c.ord + delta - 26].pack 'U'
    elsif c.ord + delta < 97 then
      return [c.ord + delta + 26].pack 'U'
    else
      return [c.ord + delta].pack 'U'
    end
  end

  def increment(c)
    return nil if self.size > 1
    c %= 26
    step self, c
  end

  def decrement(c)
    return nil if self.size > 1
    c %= 26
    step self, -c
  end
end

class Board
  attr_reader :cell_pairs
  MOVES = {
    'nw' => [-1, 0],
    'ne' => [-1, +1],
    'sw' => [+1, -1],
    'se' => [+1, 0]
  }
  CELL_CODES = Matrix[
    [0,0,0,0,0,1,3,3,3,2],
     [0,0,0,0,5,7,7,7,7,2],
      [0,0,0,5,7,7,7,7,7,2],
       [0,0,5,7,7,7,7,7,7,2],
        [0,5,7,7,7,7,7,7,7,2],
         [4,7,7,7,7,7,7,7,7,0],
          [4,7,7,7,7,7,7,7,0,0],
           [4,7,7,7,7,7,7,0,0,0],
            [4,7,7,7,7,7,0,0,0,0],
             [4,7,7,7,7,0,0,0,0,0],
              [0,0,0,0,0,0,0,0,0,0]
  ]

  CELL_PAIRS = module Cell_pairs # "Function" to prepare the cell_pairs
    cell_pairs = Hash.new
    start_letter = 'a'
    increment = 0
    checker = 0
    CELL_CODES.each_with_index do |element, row, col|
      if row <= 5
        if checker != row then # I get here everytime it goes to another row
          increment = -row + 5
          checker = row
        end
        if(element == 7) then
          cell_pairs["#{row} #{col}"] = "#{row.to_s}#{start_letter.increment(increment)}"
          increment += 2
        end
      else
        if checker != row then # I get here everytime it goes to another row
          increment = row - 5
          checker = row
        end
        if(element == 7) then
          cell_pairs["#{row} #{col}"] = "#{row.to_s}#{start_letter.increment(increment)}"
          increment += 2
        end
      end
    end
    cell_pairs
  end



  def self.prepare_board positions
    seq = [' ',1,2,3,4,5,6,7,8,9,' ']
    counter = 0
    indentation = 0
    ret = ''

    CELL_CODES.to_a.map.with_index do |m, i|
      if i != 10 then
        ret += seq[counter].to_s + ' ' * indentation 
        m.each_with_index do |n, j| 
          n == 7 ? ret += ("#{positions[i,j]} ") : ret += ('  ')  # piece occupying the cell
          [4,5,6,7].include?(n) ? ret += ('| ') : ret += ('  ') 
        end
        ret += "\n" + ' ' * indentation unless i == CELL_CODES.to_a.map.size-1
        m.each_with_index do |n|
          [2,3,6,7].include?(n) ? ret += ('\\ ') : ret += ('  ') 
          [1,3,5,7].include?(n) ? ret += ('/ ') : ret += ('  ') 
        end
        ret += "\n" 
        counter+=1 
        indentation+=2
      end
    end
    ret += ' ' * 15 + 'a b c d e f g h i j k l m n o' + "\n"
    ret
  end
end

print Board::CELL_PAIRS