anchor.diff:     (health :initform 100)
      (veloc-scale :initform 0.5d0)
      (ignore-objects :initform t)
  -   (fire-rate :initform 2)))
  +   (fire-rate :initform 2)
  +   (missiles :initform 2)))
   
   (defclass enemy-bullet (sprite mobile collidable alarm)
     ((timer :initform 60)
  
positive.code:   (with-slots (parent offset size depth veloc) missile
      (when (and parent (or (and (typep missile 'missile)
  			       (typep (event-hit event) 'enemy))
                            (typep (event-hit event) 'explosion)
  			  (and (typep missile 'enemy-missile)
  			       (typep (event-hit event) 'thopter))))
        (let ((explosion (make-instance 'anim :name :explosion)))
          (make-instance 'explosion :parent parent
                         :offset (+ offset (/ size 2) (/ (size explosion) -2))
  
negative.code:                        :offset (complex (/ (x size) 2) (* (y size) 3/4))
                         :image (make-instance 'anim :name :thopter)
                         :health 4 :firepower 3 :missiles 2)))
  		       ;:health 200 :firepower 10 :missiles 5)))
           (subscribe (game-keys game) thopter)))
        ((:server :client)
          (let ((thopter1 (make-instance
  