-;;; Resources Manager
-(defstruct resource address free-function object)
-
-(let ((resources-table (make-hash-table :test 'equal)))
-
- (defun set-resource (type object &rest key)
- (let ((res
- (cond ((surface-p object)
- (make-resource :address (surface-address object)
- :free-function #'SDL_FreeSurface
- :object object))
- ((font-p object)
- (make-resource :address (font-address object)
- :free-function #'TTF_CloseFont
- :object object))
- ((cp-space-p object)
- (make-resource :address (cp-space-address object)
- :free-function #'cpSpaceFree
- :object object))
- ((cp-body-p object)
- (make-resource :address (cp-body-address object)
- :free-function #'cpBodyFree
- :object object))
- ((cp-shape-p object)
- (make-resource :address (cp-shape-address object)
- :free-function #'cpShapeFree
- :object object))
- (t nil))))
- (cond (res (setf (gethash `(,type ,@key) resources-table) res)))))
-
- (defun get-resource (type &rest key)
- (let ((resource (gethash `(,type ,@key) resources-table)))
- (cond ((null resource) nil)
- (t (resource-object resource)))))
+ (defun free-resource (key)
+ (funcall (get-rdestructor key))
+ (setf (get-rtime key) nil))
+
+ (defun expire-resource (key &optional (now (SDL_GetTicks)))
+ (let ((time (get-rtime key)))
+ (cond ((and (numberp time) (> (- now time) expiration-time)) (free-resource key)))))
+
+ (defun expire-resources ()
+ (maphash (lambda (key res) (expire-resource key)) resources-table))