Warcraft3: Create classes and methods for the specs to pass.

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 >= 80
  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

# http://classic.battle.net/war3/human/units/footman.shtml

class Footman < Unit
  def initialize
   super(60,80)
  end

  def attack!(enemy)
  	enemy.damage(10)
  end

  def damage(attack_power)
  	@health_points -= attack_power
  end
end

peasant.rb

class Peasant < Unit

	def initialize
		super(35,0)
	end

end

unit.rb

class Unit

	attr_reader :health_points, :attack_power
	  def initialize(health_points, attack_power)
	    @health_points = health_points 
	    @attack_power = attack_power
	  end

	  def damage(attack_power)
	  	@health_points -= attack_power
	  end

	  def attack!(enemy_unit)
	  	enemy_unit.damage(3)
	  end

end