X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fobjectinstance.h;h=e7f85e3fbc4c3bc17bf3dbe12aa499cd5c6834b3;hb=bbfb79181f716736df413f463b55825866400ed8;hp=d665851fbb5d40fb0201d17c255ea8667572a04c;hpb=25c81b4953dd38993250321b9407ce8b0139cbeb;p=libs%2Fgl.git

diff --git a/source/objectinstance.h b/source/objectinstance.h
index d665851f..e7f85e3f 100644
--- a/source/objectinstance.h
+++ b/source/objectinstance.h
@@ -31,6 +31,7 @@ public:
 	ObjectInstance(const Object &);
 
 	const Object &get_object() const { return object; }
+	virtual long get_instance_key() const { return reinterpret_cast<long>(&object); }
 
 	virtual void render(const Tag &tag = Tag()) const;
 	virtual void render(Renderer &, const Tag & = Tag()) const;