;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
-(use-modules (srfi srfi-1))
+;;; Mobs Factory
-;;; Actions for mobs
+(define show-mob-hash #f)
+(define hide-mob-hash #f)
+(define get-active-mobs #f)
+(define mobs-changed? #f)
-(define-macro (define-action name attr . code)
- `(define (,name mob-attr)
- (let ,attr
+(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! hide-mob-hash
+ (lambda (key)
+ (hash-remove! key)
+ (set! changed #t)))
+
+ (set! get-active-mobs
+ (lambda* (#:optional (refreshed #t))
+ (set! changed (not refreshed))
+ (hash-map->list (lambda (k v) v) active-mobs)))
+
+ (set! mobs-changed?
+ (lambda () changed)))
+
+
+(define-macro (show-mob mob)
+ `(show-mob-hash ',mob (lambda (option) (,mob option))))
+
+(define-macro (hide-mob mob)
+ `(hide-mob-hash ',mob))
+
+(define (process-mobs mobs)
+ (for-each (lambda (m) (m #:render)) mobs))
+
+
+;;; Actions and looks for mobs
+
+(defmacro make-behaviour (name attr &rest code)
+ `(defun ,(get-behaviour-fun-name name) (object-attr)
+ (let ,(mapcar #'attribute-definition attr)
,@code
- ,(cons 'begin (map #'attribute-save (reverse attr)))
- mob-attr)))
+ ,(cons 'progn (mapcar #'attribute-save (reverse attr)))
+ object-attr)))
+
+(defun get-behaviour-fun-name (name)
+ (intern (concatenate 'string "BEHAVIOUR-" (string-upcase (string name))) 'gacela))
+
+(defun attribute-name (attribute)
+ (intern (string attribute) 'keyword))
+
+(define (attribute-definition attribute)
+ (let* ((name (cond ((list? attribute) (car attribute))
+ (else attribute)))
+ (pname (attribute-name name))
+ (value (cond ((listp attribute) (cadr attribute)))))
+ `(,name (getf object-attr ,pname ,value))))
(defun attribute-save (attribute)
(let* ((name (cond ((listp attribute) (car attribute))
(pname (attribute-name name)))
`(setf (getf object-attr ,pname) ,name)))
-
-
-;;; Mob Factory
-
-(define-macro (makemob name . methods)
- `(define* (,name . args)
- (let ((option (car args)))
- ,(lset-union eq?
- `(case option
- (:on (mob-on ',name))
- (:off (mob-off ',name)))
- (define (options m)
- (let ((option (car m)) (body (cadr m)))
- (cond ((null? m) '())
- (else (cons (list option `(apply ,body (cdr args))) (options (cddr m)))))))
- (options methods)))))
-
-(define-macro (makemob name . methods)
- (define (options m)
- (cond ((null? m) '((else #f)))
+(define-macro (lambda-look . look)
+ (define (process-look look)
+ (cond ((null? look) (values '() '()))
(else
- (let ((option (caar m)) (body (cadar m)))
- (cons `((,option) (apply ,body (cdr args))) (options (cdr m)))))))
- (let ((m (options methods)))
- `(define (,name . args)
- (let ((option (car args)))
- (case option
- ((#:on) (mob-on ',name))
- ((#:off) (mob-off ',name))
- ,@m)))))
-
-
-(define mob-on #f)
-(define run-mobs #f)
-(define mob-off #f)
-(define refresh-running-mobs #f)
-(define quit-all-mobs #f)
-
-(let ((running-mobs '()) (mobs-to-add '()) (mobs-to-quit '()))
- (set! mob-on
- (lambda (mob)
- (push mob mobs-to-add)))
-
- (set! run-mobs
- (lambda* (option #:key args function)
- (define (run-mobs-rec mobs)
- (cond ((null? mobs) #f)
- (else
- (cond (function (function)))
- (catch #t (lambda () (apply (car mobs) (cons option args))) (lambda (key . args) #f))
- (or #t (run-mobs-rec (cdr mobs))))))
- (run-mobs-rec running-mobs)))
-
- (set! mob-off
- (lambda (mob)
- (push mob mobs-to-quit)))
-
- (set! refresh-running-mobs
- (lambda ()
- (do ((mob (pop mobs-to-add) (pop mobs-to-add))) ((null? mob))
- (push mob running-mobs)
- (catch #t (lambda () (mob #:init)) (lambda (key . args) #f)))
- (set! running-mobs (reverse (lset-difference eq? running-mobs mobs-to-quit)))
- (set! mobs-to-quit '())))
-
- (set! quit-all-mobs
- (lambda ()
- (set! running-mobs '())
- (set! mobs-to-add '())
- (set! mobs-to-quit '()))))
-
-
-(define (logic-mobs)
- (run-mobs #:logic))
-
-(define (render-mobs)
- (run-mobs #:render #:function (lambda () (glLoadIdentity))))
+ (let ((line (car look)))
+ (receive (lines images) (process-look (cdr look))
+ (cond ((string? line)
+ (let ((var (gensym)))
+ (values (cons `(draw-texture ,var) lines)
+ (cons `(,var (load-texture ,line)) images))))
+ (else
+ (values (cons line lines)
+ images))))))))
+
+ (receive (look-lines look-images) (process-look look)
+ `(let ,look-images
+ (lambda ()
+ (glPushMatrix)
+ ,@look-lines
+ (glPopMatrix)))))
+
+
+;;; Making mobs
+
+(define-macro (define-mob mob-head . look)
+ (let ((name (car mob-head)) (attr (cdr mob-head)))
+ `(define ,name
+ (lambda-mob ,attr ,@look))))
+
+(define-macro (lambda-mob attr . look)
+ `(let ((mob #f))
+ (set! mob
+ (let ((attr ',attr) (actions '()) (renders '()))
+ (lambda (option . params)
+ (case option
+ ((get-attr)
+ attr)
+ ((set-attr)
+ (if (not (null? params)) (set! attr (car params))))
+ ((get-actions)
+ actions)
+ ((set-actions)
+ (if (not (null? params)) (set! actions (car params))))
+ ((get-renders)
+ renders)
+ ((set-renders)
+ (if (not (null? params)) (set! renders (car params))))))))
+ (cond ((not (null? ',look))
+ (display ',look)
+ (newline)))
+ mob))