MarsRoverOld.rb

class Plateau
  private
    @_maxX = 0
    @_maxY = 0

  public
  def initialize (x ,y)
    @_maxX = x
    @_maxY = y
  end
end



class MarsRover


  private
    @_direction = 0
    @_x = 0
    @_y = 0
    @_plateau = 0

    def ChangeDirection (rotate)
      case rotate
        when 'R': @_direction =  @_direction == 0 ? @_direction = 3: @_direction - 1
        when 'L': @_direction =  @_direction == 3 ? @_direction = 0: @_direction + 1
      end
    end
    def Action (action)
      if action == 'M'
        MoveTo (@_direction)
      else
        ChangeDirection(action)
      end

    end

    def MoveTo (moveDirection)
      case moveDirection
        when 0: @_y += 1
        when 2: @_y -= 1
        when 1: @_x -= 1
        when 3: @_x += 1
      end
    end



  public
    def initialize (x, y, direction, plateau)
      @_x = x
      @_y = y
      case direction
        when 'N':  @_direction = 0
        when 'W':  @_direction = 1
        when 'S':  @_direction = 2
        when 'E':  @_direction = 3
      end
      @_plateau = plateau
    end

    def Move (movement)
      movement.upcase.split('').each do |symbol|
        Action(symbol)
      end
    end

    def ShowPosition ()
      @position = @_x.to_s + ", " + @_y.to_s + " "
      case @_direction
        when 0: @position+= 'N'
        when 1: @position+= 'W'
        when 2: @position+= 'S'
        when 3: @position+= 'E'
      end
      puts @position
    end

end

pl = Plateau.new(5,5)
rover1 = MarsRover.new(1,2,'N',pl)
rover1.Move("LMLMLMLMM")
rover1.ShowPosition

rover2 = MarsRover.new(3,3,'E',pl)
rover2.Move("MMRMMRMRRM")
rover2.ShowPosition