hero3.rb

class Traxex
  # st above
  
  def attack
    # do st
  end
end

class AttackDecorator
  def initialize(hero_object)
    @hero_object = hero_object
  end
  
  def attack
    raise NotImplementedError.new("implement in subclass")
  end
end

class FrostArrowDecorator < AttackDecorator
  def initialize(hero_object)
    super(hero_object)
    @is_iced_stune_effect = true
  end
  
  def attack
    stun_for(stun_rate)
    @hero_object.attack()
  end
end


class MarksmanShipDecorator < AttackDecorator
  def initialize(hero_object)
    super(hero_object)
    
    @hero_object.damage = marksman_ship_damage
    @marksman_ship_effect = true
  end
  
  def attack
    @hero_object.attack()
    aura_damge
  end
end

# example using
traxex = Traxex.new(strength: 24, agility: 20, speed: 17)

# normal attack
traxex.attack

# frost arrow attack
traxex_frost_arrow = FrostArrowDecorator.new(traxex)
traxex_frost_arrow.attack

# frost arrow attack with marksman ship
MarksmanShipDecorator.new(traxex_frost_arrow).attack

# complex attack
FirstDecorator.new(SecondDecorator.new(ThirdDecorator.new(FourthDecorator))).attack