Ruby Warrior Level.4

ruby_warrior4.rb

class Player
  def play_turn(warrior)
    # cool code goes here
    if @health.nil? then
      @health = warrior.health
    end
    if @health > warrior.health then
      if warrior.feel.empty? then
        warrior.walk!
      else
        warrior.attack!
      end
    elsif warrior.feel.enemy? then
      warrior.attack!
    else
      if warrior.health < 20 then
        warrior.rest!
      else
        warrior.walk!
      end
    end
    @health = warrior.health
  end
end