(no commit message)

[gacela.git] / src / gacela_mobs.scm

diff --git a/src/gacela_mobs.scm b/src/gacela_mobs.scm
index 497e827a3fd95287602e54048f953e1cf5e53d9f..dabb9dc2a40102aa5202fb171f510c52bfc1e3e6 100755 (executable)
--- a/src/gacela_mobs.scm
+++ b/src/gacela_mobs.scm
@@ -17,42 +17,79 @@
 
 ;;; 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 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! active-mobs 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! clear-active-mobs
+       (lambda ()
+         (set! changed #t)
+         (hash-clear! active-mobs)))
 
+  (set! mobs-changed?
+       (lambda () changed)))
 
-(define-macro (get-mobs-function)
-  (let ((mobs (get-active-mobs)))
-    `(lambda () ,@(map (lambda (mob) `(,mob)) mobs))))
 
-(define-macro (define-mob mob-head . look)
+(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)
+  (cond ((list? mob)
+        `(let ((m ,mob))
+           (hide-mob-hash (m 'get-mob-id))))
+       (else
+        `(hide-mob-hash (,mob 'get-mob-id)))))
+
+(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)))
-    `(begin
-       (define ,name #f)
-       (let ((attr ,attr))
-        (set! ,name
-              (lambda (option)
-                (case option
-                  ((#:render)
-                   (glPushMatrix)
-                   ,@(map (lambda (x) (if (string? x) `(draw-image ,x) x)) look)
-                   (glPopMatrix)))))))))
+    `(define ,(string->symbol (string-concatenate (list "make-" (symbol->string name))))
+       (lambda* ,(if (null? attr) '() `(#:key ,@attr))
+        (lambda-mob () ,@body)))))
+
+(define-macro (lambda-mob attr . body)
+  (let ((mob-id-symbol (gensym))
+       (type-mob
+    `(let ,(cons `(,mob-id-symbol (gensym)) attr)
+       (lambda* (#:optional (option #f))
+        (define (kill-me)
+          (hide-mob-hash ,mob-id-symbol))
+        (case option
+          ((get-mob-id)
+           ,mob-id-symbol)
+          (else
+           (catch #t
+                  (lambda () ,@body)
+                  (lambda (key . args) #f))))))))