(define-mob (asteroid
(image (load-texture "Asteroid.png"))
- (x 0) (y 0) (angle 0))
+ (x 0) (y 0) (angle 0)
+ (vx 1) (vy 1))
+ (set! x (+ x vx))
+ (set! y (+ y vy))
+ (set! angle (+ angle 1))
+
+ (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)))
+
(translate x y)
(rotate angle)
(draw-texture image))
-(show-mob (make-asteroid))
+(define-mob (ship
+ (ship1 (load-texture "Ship1.png"))
+ (ship2 (load-texture "Ship2.png"))
+ (x 0) (y 0) (angle 0)
+ (moving #f))
+ (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)))
+ (cond ((key-pressed? 'space)
+ (show-mob (make-shot #:x x #:y y #:angle angle))))
-;; (define draw-asteroid
-;; (let ((asteroid (load-texture "Asteroid.png")))
-;; (lambda (a)
-;; (to-origin)
-;; (translate (assoc-ref a 'x) (assoc-ref a 'y))
-;; (rotate (assoc-ref a 'angle))
-;; (draw-texture asteroid))))
-
-;; (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))
+ (let ((r (degrees-to-radians (- angle))))
+ (set! x (+ x (* 10 (sin r))))
+ (set! y (+ y (* 10 (cos r))))
+ (cond ((or (> x max-x)
+ (< x min-x)
+ (> y max-y)
+ (< y min-y))
+ (kill-me))))
-;; (assoc-multiple-set! s 'x x 'y y 'angle angle 'moving moving)))
+ (translate x y)
+ (rotate angle)
+ (draw-line 10))
-;; (define (ship-shot s)
-;; (cond ((key-pressed? 'space)
-;; `((x . ,(assoc-ref s 'x)) (y . ,(assoc-ref s 'y)) (angle . ,(assoc-ref s 'angle))))
-;; (else
-;; #f)))
-;; (define (draw-shot sh)
-;; (to-origin)
-;; (translate (assoc-ref sh 'x) (assoc-ref sh 'y))
-;; (rotate (assoc-ref sh 'angle))
-;; (draw-line 10))
+(show-mob (make-asteroid))
+(show-mob (make-ship))
-;; (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))))))))
-
;; (define (make-asteroids n)
;; (define (xy n r)
;; (let ((n2 (- (random (* n 2)) n)))