Unwrap Irrlicht objects in C++ instead of Guile

[guile-irrlicht.git] / src / wrapped.cpp

diff --git a/src/wrapped.cpp b/src/wrapped.cpp
new file mode 100644 (file)
index 0000000..81d4130
--- /dev/null
+++ b/src/wrapped.cpp
@@ -0,0 +1,31 @@
+/* guile-irrlicht --- GNU Guile bindings for Irrlicht Engine
+
+   Copyright (C) 2020 Javier Sancho <jsf@jsancho.org>
+
+   This file is part of guile-irrlicht.
+
+   guile-irrlicht is free software; you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 3 of the
+   License, or (at your option) any later version.
+
+   guile-irrlicht is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with guile-irrlicht. If not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <libguile.h>
+#include "wrapped.h"
+
+/* Extract C++ irrlicht object pointer from Guile object */
+void*
+scm_to_irr_pointer (SCM obj)
+{
+  SCM slot = scm_slot_ref (obj, scm_from_utf8_symbol ("irr-pointer"));
+  return scm_to_pointer (slot);
+}