;;; Mobs Factory
-(define add-mob #f)
-(define kill-mob #f)
+(define show-mob-hash #f)
+(define hide-mob-hash #f)
(define get-active-mobs #f)
-(define reload-mobs? #f)
-(define reload-mobs #f)
+(define clear-active-mobs #f)
+(define mobs-changed? #f)
-(let ((active-mobs '(m1 m2)) (reload #f))
- (set! add-mob
- (lambda (mob)
- (pushnew (procedure-name mob) active-mobs)
- (set! reload #t)))
+(let ((active-mobs (make-hash-table)) (changed #f))
+ (set! show-mob-hash
+ (lambda (key mob)
+ (hash-set! active-mobs key mob)
+ (set! changed #t)))
- (set! kill-mob
- (lambda (mob)
- (set! active-mobs (lset-difference eq? active-mobs (list (procedure-name mob))))
- (set! reload #t)))
+ (set! hide-mob-hash
+ (lambda (key)
+ (hash-remove! key)
+ (set! changed #t)))
(set! get-active-mobs
- (lambda () active-mobs))
+ (lambda* (#:optional (refreshed #t))
+ (set! changed (not refreshed))
+ (hash-map->list (lambda (k v) v) active-mobs)))
- (set! reload-mobs?
- (lambda () reload))
-
- (set! reload-mobs
+ (set! clear-active-mobs
(lambda ()
- #f)))
+ (set! changed #t)
+ (hash-clear! active-mobs)))
+
+ (set! mobs-changed?
+ (lambda () changed)))
+
+
+(define-macro (show-mob mob)
+ (cond ((list? mob)
+ `(let ((m ,mob))
+ (show-mob-hash (m 'get-mob-id) m)))
+ (else
+ `(show-mob-hash (,mob 'get-mob-id) (lambda () (,mob))))))
+
+(define-macro (hide-mob mob)
+ `(hide-mob-hash ',mob))
+
+(define (run-mobs mobs)
+ (for-each
+ (lambda (m)
+ (glPushMatrix)
+ (m)
+ (glPopMatrix))
+ mobs))
+
+
+;;; Making mobs
+
+(define-macro (define-mob mob-head . body)
+ (let ((name (car mob-head)) (attr (cdr mob-head)))
+ `(define ,(string->symbol (string-concatenate (list "make-" (symbol->string name))))
+ (lambda ()
+ (lambda-mob ,attr ,@body)))))
-(define-macro (get-mobs-function)
- (let ((mobs (get-active-mobs)))
- `(lambda () ,@(map (lambda (mob) `(,mob)) ,mobs))))
+(define-macro (lambda-mob attr . body)
+ `(let ,(cons '(mob-id (gensym)) attr)
+ (lambda* (#:optional (option #f))
+ (case option
+ ((get-mob-id)
+ mob-id)
+ (else
+ (catch #t
+ (lambda () ,@body)
+ (lambda (key . args) #f)))))))