Warcraft 3

barracks.rb

class Barracks
  attr_reader :gold, :food

  def initialize
    @gold = 1000
    @food = 80
  end


  def train_footman
    if can_train_footman?
    @gold -= 135
    @food -= 2
    Footman.new
    end
  end

  def can_train_footman?
    gold >= 135 && food >= 2
  end

  def train_peasant
    if can_train_peasant?
      @gold -= 90
      @food -= 5
      Peasant.new
    end
  end

  def can_train_peasant?
    gold >= 90 && food >= 5
  end
end

footman.rb

class Footman < Unit
  attr_reader :health_points, :attack_power

  def initialize(hp = 60, ap = 10)
    # Need to default the 2 instance variables here
    # Also also give code outside this class access to these variables (via attr_reader, attr_writer or attr_accessor

    # @health_points = hp
    # @attack_power = ap
    super(hp, ap)
  end

end

peasant.rb

class Peasant < Unit
  attr_reader :health_points, :attack_power

  def initialize(hp = 35, ap = 0)
    super(hp, ap)
  end

end

unit.rb

class Unit
  attr_reader :health_points, :attack_power

  def initialize(hp, ap)
    # Need to default the 2 instance variables here
    # Also also give code outside this class access to these variables (via attr_reader, attr_writer or attr_accessor

    @health_points = hp
    @attack_power = ap

  end

  
  def attack!(enemy)
    enemy.damage(@attack_power)

  end

  def damage(damage_point)
    @health_points -= damage_point
  end

end