Ruby warrior

Level 5.rb

class Player

  def play_turn(warrior)
    @state ||= :init
    @health ||= 0
    @init ||= true
    
    @got_hit = (warrior.health < @health)
    
    if @state == :init
      warrior.pivot!()
      @state = :kill
    elsif @state == :rescue
      rescue_captive_on_left(warrior)
    elsif @state == :heal
      heal(warrior)
    elsif @state == :kill
      kill(warrior)
    end
    
    @health = warrior.health
  end
  
  def rescue_captive_on_left(warrior)
    unless warrior.feel(:backward).captive?
      warrior.walk!(:backward)
    else
      warrior.rescue!(:backward)
      @state = :kill
    end
  end
  
  def heal(warrior)
    if @got_hit
      warrior.walk!(:backward)
    else
      if (warrior.health < 20)
        warrior.rest!
      else 
        @state = :kill
      end  
    end
  end
  
  def kill(warrior)
    if warrior.feel.empty?
      if @was_attacking
        @state = :heal
        @was_attacking = false
        heal(warrior)
      else
        warrior.walk!
      end
    else 
      warrior.attack!
      @was_attacking = true
    end
  end
  
  def opposite(direction)
    if direction == :forward
      :backward
    else
      :forward
    end
  end
end
  

Level 8 draft

class Player

  def play_turn(warrior)
    @state ||= :init
    @health ||= 0
    @init ||= true
    @warrior ||= warrior
    
    @got_hit = (warrior.health < @health)
    
    if @state == :init
      #warrior.pivot!()
      @state = :rescue
    elsif @state == :shoot
      shoot()
    elsif @state == :rescue
      rescue_captive(warrior)
    elsif @state == :heal
      heal(warrior)
    elsif @state == :kill
      kill(warrior)
    end
    
    @health = warrior.health
  end
  
  def rescue_captive(warrior)
    unless warrior.feel.captive?
      warrior.walk!
    else
      warrior.rescue!
      @state = :shoot
    end
  end
  
  def heal(warrior)
    if @got_hit
      warrior.walk!(:backward)
    else
      if (warrior.health < 20)
        warrior.rest!
      else 
        @state = :kill
      end  
    end
  end
  
  def kill(warrior)
    if warrior.feel.empty?
      if @was_attacking
        @state = :heal
        @was_attacking = false
        heal(warrior)
      else
        warrior.walk!
      end
    else 
      warrior.attack!
      @was_attacking = true
    end
  end
  
  def opposite(direction)
    if direction == :forward
      :backward
    else
      :forward
    end
  end
  
  def shoot
    if @warrior.look.any? { |f| f.enemy? }
      @warrior.shoot!
    else
      @state = :kill
      play_turn(@warrior)
    end
  end
end
  

Ruby Warrior level 4.rb

class Player
  def play_turn(warrior)
    @state ||= :rescue
    @health ||= 0
    
    @got_hit = (warrior.health < @health)
    
    if @state == :rescue
      rescue_captive_on_left(warrior)
    elsif @state == :heal
      heal(warrior)
    elsif @state == :kill
      make_war(warrior)
    end
    
    @health = warrior.health
  end
  
  def rescue_captive_on_left(warrior)
    unless warrior.feel(:backward).captive?
      warrior.walk!(:backward)
    else
      warrior.rescue!(:backward)
      @state = :kill
    end
  end
  
  def heal(warrior)
    if @got_hit
      warrior.walk!(:backward)
    else
      if (warrior.health < 20)
        warrior.rest!
      else 
        @state = :kill
      end  
    end
  end
  
  def make_war(warrior)
    if warrior.feel.empty?
      if @was_attacking
        @state = :heal
        @was_attacking = false
        heal(warrior)
      else
        warrior.walk!
      end
    else 
      warrior.attack!
      @was_attacking = true
    end
  end
end