-;; (define (move-asteroid a)
-;; (let ((x (assoc-ref a 'x)) (y (assoc-ref a 'y))
-;; (angle (assoc-ref a 'angle))
-;; (vx (assoc-ref a 'vx)) (vy (assoc-ref a 'vy)))
-;; (set! x (+ x vx))
-;; (set! y (+ y vy))
-;; (cond ((> x max-x) (set! vx -1))
-;; ((< x min-x) (set! vx 1)))
-;; (cond ((> y max-y) (set! vy -1))
-;; ((< y min-y) (set! vy 1)))
-
-;; (assoc-multiple-set! a 'x x 'y y 'angle (+ angle 1) 'vx vx 'vy vy)))
-
-;; (define draw-ship
-;; (let ((ship1 (load-texture "Ship1.png"))
-;; (ship2 (load-texture "Ship2.png")))
-;; (lambda (s)
-;; (to-origin)
-;; (translate (assoc-ref s 'x) (assoc-ref s 'y))
-;; (rotate (assoc-ref s 'angle))
-;; (let ((ship (if (assoc-ref s 'moving) ship2 ship1)))
-;; (draw-texture ship)))))
-
-;; (define (move-ship ship)
-;; (let* ((s ship)
-;; (x (assoc-ref s 'x)) (y (assoc-ref s 'y))
-;; (angle (assoc-ref s 'angle))
-;; (moving (assoc-ref s 'moving)))
-;; (cond ((key? 'left) (set! angle (+ angle 5)))
-;; ((key? 'right) (set! angle (- angle 5))))
-;; (cond ((key? 'up)
-;; (let ((r (degrees-to-radians (- angle))))
-;; (set! x (+ x (* 4 (sin r))))
-;; (set! y (+ y (* 4 (cos r)))))
-;; (cond ((> x max-x) (set! x min-x))
-;; ((< x min-x) (set! x max-x)))
-;; (cond ((> y max-y) (set! y min-y))
-;; ((< y min-y) (set! y max-y)))
-;; (set! moving #t))
-;; (else
-;; (set! moving #f)))
+ (translate x y)
+ (rotate angle)
+ (draw-texture (if moving ship2 ship1)))
+
+(define-mob (shot (x 0) (y 0) (angle 0))
+ (translate x y)
+ (rotate angle)
+ (draw-line 10))
+
+;; (define (move-shots shots)
+;; (cond ((null? shots) '())
+;; (else
+;; (let* ((sh (car shots))
+;; (x (assoc-ref sh 'x)) (y (assoc-ref sh 'y))
+;; (angle (assoc-ref sh 'angle))
+;; (r (degrees-to-radians (- angle))))
+;; (set! x (+ x (* 10 (sin r))))
+;; (set! y (+ y (* 10 (cos r))))
+;; (cond ((and (<= x max-x)
+;; (>= x min-x)
+;; (<= y max-y)
+;; (>= y min-y))
+;; (cons `((x . ,x) (y . ,y) (angle . ,angle))
+;; (move-shots (cdr shots))))
+;; (else
+;; (move-shots (cdr shots))))))))