blah.rb

class Player
 @last_known_health = nil
 RETREAT= 20 * 0.40
 ONWARD= 20 * 0.75
 
 def play_turn(warrior)
   @last_known_health = warrior.health unless @last_known_health
 
   if warrior.feel.empty?
     # The next block is empty
     if warrior.health <= RETREAT
       # If my health is less than or equal to RETREAT, I should walk backward
       warrior.walk! :backward
     else
       # My health is good, proceed!
       warrior.walk! :forward
     end
   else
     # The next block is not empty
     if warrior.health < ONWARD
       # My health is not optimal, let's rest
       warrior.rest!
     else
       # My health is good, let's proceed
       warrior.walk! :forward
     end
   end
   
   # The following block needs to go somewhere above, maybe in an else if block?
   if warrior.feel.captive?
     warrior.rescue!
   else
     warrior.attack!
   end
end

   
 
 @last_known_health = warrior.health
 
 end
end