hacking at the ruby warrior game.

ruby-warrior.rb

class Player

  def max_health; 20; end;
  def healing_threshold; 10; end

  def initialize
    @healing = false
    @retreating = false
    @last_action = nil
    @last_health = 20
  end

  def should_heal?(warrior)
    warrior.health < healing_threshold
  end

  def taking_damage?(warrior)
    warrior.health < @last_health
  end

  def retreat?(warrior)
    if taking_damage?(warrior) && warrior.feel.empty?
      @retreating = false
    elsif (@retreating || @healing) && taking_damage?(warrior)
      @retreating = true
    elsif should_heal?(warrior) && !warrior.feel.enemy?
      @retreating = true
    else
      @retreating = false
    end
    @retreating
  end

  def rest?(warrior)
    if taking_damage?(warrior) && (warrior.feel.empty? || warrior.feel.enemy?)
      @healing = false
    elsif should_heal?(warrior) ||
        (@last_action == :attack && warrior.feel.empty?)
      @healing = true
    elsif @healing
      @healing = false if warrior.health == max_health
    else
      @healing = false
    end
    @healing
  end

  def free_captive?(warrior)
    warrior.feel.captive?
  end

  def move_or_attack!(warrior)
    if warrior.feel.empty?
      warrior.walk!
      @last_action = :walk
    elsif warrior.feel.enemy?
      warrior.attack!
      @last_action = :attack
    end
  end

  def play_turn(warrior)
    # cool code goes here
    if retreat?(warrior)
      warrior.walk! :backward
      @last_action = :walk
    elsif rest?(warrior)
      warrior.rest!
      @last_action = :rest
    elsif free_captive?(warrior)
      warrior.rescue!
      @last_action = :rescue
    else
      move_or_attack!(warrior)
    end
    @last_health = warrior.health
  end
end