Return #f if device creation fails

[guile-irrlicht.git] / irrlicht.scm

diff --git a/irrlicht.scm b/irrlicht.scm
index 7cbb8860f72f19aa870ca18526b9c2fb17b0b4da..0ff6e3a6083358af344f25911a9f21b2be555abb 100644 (file)
--- a/irrlicht.scm
+++ b/irrlicht.scm
@@ -26,7 +26,10 @@
   #:use-module ((irrlicht bindings video) #:prefix ffi-video:)
   #:export (create-device
             get-video-driver
-            get-scene-manager))
+            get-scene-manager
+            set-window-caption!
+            device-run?
+            device-drop!))
 
 (define* (create-device #:optional
                         (device-type 'software)
@@ -44,13 +47,23 @@
                        ('opengl ffi-video:EDT_OPENGL)
                        ('count ffi-video:EDT_COUNT)))
         (wsize (make-c-struct ffi-core:dimension2d window-size)))
-    (ffi:create-device driver wsize bits
-                       (if fullscreen 1 0)
-                       (if stencilbuffer 1 0)
-                       (if vsync 1 0))))
+    (let ((device (ffi:create-device driver wsize bits
+                                     (if fullscreen 1 0)
+                                     (if stencilbuffer 1 0)
+                                     (if vsync 1 0))))
+      (if (null-pointer? device) #f device))))
 
 (define (get-video-driver device)
   (ffi:get-video-driver device))
 
 (define (get-scene-manager device)
   (ffi:get-scene-manager device))
+
+(define (set-window-caption! device text)
+  (ffi:set-window-caption device (string->pointer text)))
+
+(define (device-run? device)
+  (if (> (ffi:run device) 0) #t #f))
+
+(define (device-drop! device)
+  (if (> (ffi:drop device) 0) #t #f))