X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=irrlicht%2Fforeign.scm;h=96cec83bd0dd04c9dfca6a5c5c5757cf07992337;hb=7611ebfeeae5ed59751f108214ee7a00aea20b7b;hp=94aab7c8fe7c7c979c68877b00c24cef922d7e64;hpb=384a8fb56d8500dc3551085191a39c9da70e221c;p=guile-irrlicht.git

diff --git a/irrlicht/foreign.scm b/irrlicht/foreign.scm
index 94aab7c..96cec83 100644
--- a/irrlicht/foreign.scm
+++ b/irrlicht/foreign.scm
@@ -22,7 +22,9 @@
   #:use-module (system foreign)
   #:use-module (irrlicht base)
   #:export (get-irrlicht-proc
-            null-pointer?))
+            null-object?
+            remember-wrapped
+            mem-wrapped))
 
 ;; We use a hash table to store foreign irrlicht methods related with their
 ;; classes
@@ -43,5 +45,21 @@
           (else
            proc))))
 
-(define (null-pointer? pointer)
-  (eq? pointer %null-pointer))
+(define (null-object? object)
+  (null-pointer? (irr-pointer object)))
+
+;; Table for storing foreign irrlicht wrapped objects by its pointer address
+;; We can recover them later, when we have an address without knowing its type, like in
+;; events case
+(define wrapped-obj-table (make-hash-table))
+
+(define (remember-wrapped object)
+  (or (hash-ref wrapped-obj-table
+                (pointer-address (irr-pointer object)))
+      object))
+
+(define (mem-wrapped object)
+  (hash-set! wrapped-obj-table
+             (pointer-address (irr-pointer object))
+             object)
+  object)