C4Board.rb

class C4Board
  attr_attribute :board
  attr_attribute :mover
 
  BLACK = :black
  RED = :red
  EMPTY = nil

  def initialize(state = C4Board.starting_board)
    mover = :black
    board = state
  end
 
  # returns an array of all the columns a piece can be dropped in currently
  def moves
    board.map {|c| c.index nil }

  end
 
  # returns a new board with the to_move's piece dropped in the provided column
  def move(position)

    mover = mover.eq?(:red) ? :black : :red
  end
 
  # returns :red or :black, depending on whose turn it is.
  def player_to_move
    mover
  end
 
  # truthy if won, false otherwise
  def won?

  end
 
  # should return 2d array suitable for displaying
  def cells
  end
 
  # returns a board initialized to be empty, with :black set as the current player.
  def self.starting_board
     Array.new(6) { Array.new(7) }
  end
 
end