ability to run 2D physics in a thread

also, 2D physics is now thread safe too.
see physics_2d/thread_model

1 files changed, 3 insertions, 3 deletions

diff --git a/tools/pck/pck_packer.h b/tools/pck/pck_packer.h
index 76752a6170..2bb51128e9 100644
--- a/tools/pck/pck_packer.h
+++ b/tools/pck/pck_packer.h
@@ -1,10 +1,10 @@
-#include "core/object.h"
+#include "core/reference.h"
 
 class FileAccess;
 
-class PCKPacker : public Object {
+class PCKPacker : public Reference {
 
-	OBJ_TYPE(PCKPacker, Object);
+	OBJ_TYPE(PCKPacker, Reference);
 
 	FileAccess* file;
 	int alignment;