https://www.bloc.io/ruby-warrior/#/warriors/71805/levels/9

gistfile1.rb

class Player
  def play_turn(warrior)
    @max_health ||= warrior.health

    case state(warrior)
    when :lost
      warrior.pivot!
    when :captive
      warrior.rescue!
    when :enemyfar
      warrior.shoot! and @rest = false 
    when :enemyclose
      warrior.attack! and @rest = false
    when :bleeding
      warrior.rest! and @rest = true
    else
      warrior.walk!
    end
    
    @prev_health = warrior.health
  end

  def state(warrior)
    return :lost         if warrior.feel.wall?
    return :captive      if warrior.feel.captive?
    return :enemyclose   if warrior.feel.enemy? 
    return :underattack  if @prev_health && warrior.health < @prev_health
    return :enemyfar     if (space = warrior.look.detect{ |s| s.enemy? || s.captive? }) && space.enemy?
    return :bleeding     if warrior.health < @max_health
  end
end