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require_relative './racer_utils'
#assume 'racer_utils' works 

class RubyRacer
  attr_reader :players, :length
 
  def initialize(players, length = 30)
    @players = players
    @length = length
    @die = Die.new
    @player_a_location = 0
    @player_b_location = 0
  end
  
  # Returns +true+ if one of the players has reached 
  # the finish line, +false+ otherwise
  def finished?
    if @player_a_location == 29 || @player_b_location == 29
      return true
    end
  end
  
  # Returns the winner if there is one, +nil+ otherwise
  def winner
      if @player_a_location > @player_b_location
        "Player A"
      elsif @player_a_location < @player_b_location
        "Player B"
      else
        nil
      end
  end
  
  # Rolls the dice and advances +player+ accordingly
  def advance_player!(player)
    if player == 'a'
      @player_a_location += @die.roll
    else
      @player_b_location += @die.roll
    end
  end
  
  # Prints the current game board
  # The board should have the same dimensions each time
  # and you should use the "reputs" helper to print over
  # the previous board
  def print_board
    reputs
    #board = Array.new(2, Array.new(30, ' '))
    #   board[0] << "  "
    #   board[1] << "  "
    # end
    @board = []
    @board[0] = Array.new(30, ' ')
    @board[1] = Array.new(30, ' ')
    @board[0][@player_a_location] = 'a'
    @board[1][@player_b_location] = 'b'
    puts @board[0].join('|')
    puts @board[1].join('|')
  end
end
 
players = ['a', 'b']

game = RubyRacer.new(players)
 
# This clears the screen, so the fun can begin
clear_screen!
 
until game.finished?
  players.each do |player|
    # This moves the cursor back to the upper-left of the screen
    move_to_home!
  
    # We print the board first so we see the initial, starting board
    game.print_board
    game.advance_player!(player)
    
    # We need to sleep a little, otherwise the game will blow right past us.
    # See http://www.ruby-doc.org/core-1.9.3/Kernel.html#method-i-sleep
    sleep(0.5)
  end
end

 
# The game is over, so we need to print the "winning" board
game.print_board
puts "Player '#{game.winner}' has won!"