Events Engine running and returning data.

[gacela.git] / src / gacela_mobs.scm

diff --git a/src/gacela_mobs.scm b/src/gacela_mobs.scm
index 497e827a3fd95287602e54048f953e1cf5e53d9f..fc99b89d39c7f5690ff02bde86129772b3a9b52d 100755 (executable)
--- a/src/gacela_mobs.scm
+++ b/src/gacela_mobs.scm
@@ -17,42 +17,166 @@
 
 ;;; 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)
+  (clear-mob-data)
+  (for-each (lambda (m) (m 'publish-data)) mobs)
+  (run-mobs-events)
+  (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))
+        (the-mob ',name () ,attr ,@body)))))
+
+(define-macro (the-mob type attr publish . body)
+  (let ((mob-id-symbol (gensym))
+       (type-symbol (gensym)))
+    `(let ((,mob-id-symbol (gensym))
+          (,type-symbol ,type)
+          ,@attr)
+       (lambda* (#:optional (option #f))
+        (define (kill-me)
+          (hide-mob-hash ,mob-id-symbol))
+        (case option
+          ((get-mob-id)
+           ,mob-id-symbol)
+          ((get-type)
+           ,type-symbol)
+          ((publish-data)
+           (cond ((not (null? ',publish))
+                  (publish-mob-data ,mob-id-symbol ,type-symbol ,(cons 'list (map (lambda (x) `(cons ',(car x) ,(car x))) publish))))))
+          (else
+           (catch #t
+                  (lambda () ,@body)
+                  (lambda (key . args) #f))))))))
+
+(define-macro (lambda-mob attr . body)
+  `(the-mob 'undefined ,attr '() ,@body))
+
+
+;;; Events Engine
+
+(define publish-mob-data #f)
+(define clear-mob-data #f)
+(define def-mobs-event #f)
+(define run-mobs-events #f)
+(define return-data #f)
+
+(define published-data (make-hash-table))
+(define mobs-events (make-hash-table))
+(define returned-data (make-hash-table))
+
+(let ((nop #f))
+  (set! publish-mob-data
+       (lambda (mob-id mob-type data)
+         (let ((t (hash-ref published-data mob-type))
+               (i (cons mob-id data)))
+           (hash-set! published-data mob-type
+                      (cond (t (cons i t))
+                            (else (list i)))))))
+
+  (set! clear-mob-data
+       (lambda ()
+         (hash-clear! published-data)
+         (hash-clear! returned-data)))
+
+  (set! def-mobs-event
+       (lambda (pair fun)
+         (cond ((not fun)
+                (hash-remove! mobs-events pair))
+               (else
+                (hash-set! mobs-events pair fun)))))
+
+  (set! run-mobs-events
+       (lambda ()
+         (hash-for-each
+          (lambda (types fun)
+            (let ((t1 (hash-ref published-data (car types)))
+                  (t2 (hash-ref published-data (cadr types))))
+              (cond ((and t1 t2)
+                     (for-each
+                      (lambda (m1)
+                        (for-each
+                         (lambda (m2)
+                           (let ((res (catch #t
+                                             (lambda () (fun (cdr m1) (cdr m2)))
+                                             (lambda (key . args) #f))))
+                             (cond ((and (list? res) (>= (length res) 2))
+                                    (let ((id1 (car m1)) (id2 (car m2))
+                                          (r1 (car res)) (r2 (cadr res)))
+                                      (return-data id1 (cadr types) r1)
+                                      (return-data id2 (car types) r2)
+)))))
+                         t2))
+                      t1)))))
+          mobs-events)))
+
+  (set! return-data
+       (lambda (mob-id mob-type data)
+         (let* ((key (list mob-id mob-type))
+                (res (hash-ref returned-data key)))
+           (hash-set! returned-data key
+                      (cond (res (cons data res))
+                            (else (list data))))
+)))
+)
+
+(define-macro (define-mobs-event types-pair . body)
+  `(def-mobs-event
+     ',types-pair
+     ,(cond ((null? body) #f)
+           (else `(lambda (,(car types-pair) ,(cadr types-pair)) ,@body)))))