Ruby Racer 2

racer_utils.rb

class Die
  def initialize(sides = 6)
    @sides = sides
  end
  
  # Remember: rand(N) randomly returns one of N consecutive integers, starting at 0
  # So rand(N) returns a random integer in (0..N-1)
  # And 1 + rand(N) returns a random integer in (1..N)
  # See: http://www.ruby-doc.org/core-1.9.3/Kernel.html#method-i-rand
  def roll
    1 + rand(@sides)
  end
end
 
# Use "reputs" to print over a previously printed line,
# assuming the cursor is positioned appropriately.
def reputs(str = '')
  puts "\e[0K" + str
end
 
# Clear the screen
def clear_screen!
  print "\e[2J"
end
 
# Moves cursor to the top left of the terminal
def move_to_home!
  print "\e[H"
end
 
# Flushes the STDOUT buffer.
# By default STDOUT is only flushed when it encounters a newline (\n) character
def flush!
  $stdout.flush
end

ruby_racer_2.rb

require_relative 'racer_utils.rb'
 
class RubyRacer
  attr_reader :players, :length
 
  def initialize(players, length = 30)
    @players = players
    @length = length
    @apos = 0
    @bpos = 0
    @player_one= players[0].chr
    @player_two= players[1].chr
    @aWinner = false
    @bWinner = false
    @counter = 0
    
 
  end
  
 
  def finished?
    if @apos > @length || @bpos > @length
        true
      end
  end
  
   
  def winner
    if @apos >= @length
          @player_one
    elseif @pos >= @length
          @player_two
    else
          nil
    end
  end
 
  

  def advance_player!(player)
     
      move_to_home!
 
      if @counter == 0
      @apos += Die.new.roll
      reputs( " | "  * (@apos-1) + player + " | " * (@length - @apos))
      @counter += 1
          
      elsif @counter == 1
      puts
      @bpos += Die.new.roll
      reputs( " | "  * (@bpos-1) + player + " | " * (@length - @bpos))
      @counter = 0
          
      end
 end
  
  
  def print_board
    move_to_home!
    reputs("#{@player_one}" + " | " * @length)
    reputs("#{@player_two}" + " | " * @length)
    sleep(1)
 
  end
end
 
players = ['a', 'b']
 
game = RubyRacer.new(players)

clear_screen!
game.print_board

sleep(1)
until game.finished?
 players.each do |player|
  game.advance_player!(player)
    break if @aWinner == true
    break if @bWinner == true
    sleep(0.25)
   end
end


 
puts "Player '#{game.winner}' has won!"