rubywarrior (Level 6) with Ryan Spore

player.rb

Command = Struct.new(:method, :direction)

class Command
  def initialize(m, *args)
    @method = m
    @direction = args
  end
  
  def perform(warrior)
    warrior.send(@method, *@direction)
  end
end

class Player
  attr_reader :warrior
  attr_accessor :health
  
  def initialize
    @direction = :backward
    @health = 20
  end
  
  def play_turn(warrior)
    @warrior = warrior
  
    tactics = [retreat, rescue_captive, attack, rest, walk].compact
    
    tactics.first.perform(warrior)
        
    change_direction
    
    @health = warrior.health
  end
    
  def retreat
    Command.new("walk!", opposite) if attacked? && sick?
  end
  
  def opposite
    {:forward => :backward, :backward => :forward}[@direction]
  end
  
  def sick?
    warrior.health < 8
  end
  
  def rescue_captive
    Command.new("rescue!", @direction) if warrior.feel(@direction).captive?
  end
  
  def attack
    Command.new("attack!", :forward) if warrior.feel(:forward).enemy?
  end
  
  def walk
    Command.new("walk!", @direction)
  end
  
  def rest
    Command.new("rest!") if warrior.health < 20 && !attacked?
  end
  
  def change_direction
    @direction = :forward if warrior.feel(:backward).wall?
  end
  
  def attacked?    
    @health > warrior.health
  end
end