(no commit message)

[gacela.git] / gacela.lisp

diff --git a/gacela.lisp b/gacela.lisp
index 6597f784cd0955e4ce38427859885fd4e1bde20f..b9b415a0b711121da8cb8dcea11faf2a75194669 100644 (file)
--- a/gacela.lisp
+++ b/gacela.lisp
@@ -156,9 +156,26 @@
 (defun make-resource-font (&key filename encoding)
   `(:type font :filename ,filename :enconding ,encoding))
 
-(let ((resources-table (make-hash-table :test 'equal)))
+(defmacro get-rtime (key)
+  `(resource-time (gethash ,key resources-table)))
+
+(defmacro get-rplist (key)
+  `(resource-plist (gethash ,key resources-table)))
+
+(defmacro get-rconstructor (key)
+  `(resource-constructor (gethash ,key resources-table)))
+
+(defmacro get-rdestructor (key)
+  `(resource-destructor (gethash ,key resources-table)))
+
+(let ((resources-table (make-hash-table :test 'equal))
+      (expiration-time 50000))
+
+  (defun set-expiration-time (new-time)
+    (setq expiration-time new-time))
 
   (defun set-resource (key plist constructor destructor &key static)
+    (expire-resources)
     (setf (gethash key resources-table)
          (make-resource :plist plist
                         :constructor constructor
@@ -166,16 +183,22 @@
                         :time (if static t (SDL_GetTicks)))))
 
   (defun get-resource (key)
-    (let ((resource (gethash key resources-table)))
-      (cond ((null resource) nil)
-           (t (cond ((/= (resource-time resource) -1)
-                     (setf (resource-time resource) (SDL_GetTicks))
-                     (setf (gethash key resources-table) resource)))
-              (resource-plist resource)))))
+    (cond ((null (gethash key resources-table)) nil)
+         (t (let ((time (get-rtime key)))
+              (cond ((null time) (funcall (get-rconstructor key)))
+                    ((numberp time) (setf (get-rtime key) (SDL_GetTicks))))
+              (get-rplist key)))))
 
   (defun free-resource (key)
-    (funcall (resource-destructor (gethash key resources-table)))
-    (setf (resource-time (gethash key resources-table)) nil))
+    (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))
 
   (defun free-all-resources ()
     (maphash (lambda (key res) (free-resource key)) resources-table)))
@@ -235,9 +258,8 @@
         (setq running nil))))
 
 (defun quit-game ()
-;  (free-all-resources)
+  (free-all-resources)
 ;  (quit-audio)
-;  (quit-ttf)
   (quit-video-mode)
 ;  (quit-all-procs)
 ;  (clear-events)