Index: Makefile
===================================================================
--- Makefile	(revision 25581)
+++ Makefile	(revision 25582)
@@ -8,7 +8,7 @@
 
 
 
-main: main.o gui_act.o draw.o crosshair.o $(TRUNK)/src/hidlib.a
+main: main.o gui_act.o draw.o crosshair.o rtree.o $(TRUNK)/src/hidlib.a
 	$(CC) -o main $^ $(LDFLAGS)
 
 $(TRUNK)/src/hidlib.a: FORCE
Index: rtree.c
===================================================================
--- rtree.c	(nonexistent)
+++ rtree.c	(revision 25582)
@@ -0,0 +1,38 @@
+/*
+ *                            COPYRIGHT
+ *
+ *  pcb-rnd hidlib example
+ *  Copyright (C) 2019 Tibor 'Igor2' Palinkas
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *  Contact:
+ *    Project page: http://repo.hu/projects/pcb-rnd
+ *    lead developer: http://repo.hu/projects/pcb-rnd/contact.html
+ *    mailing list: pcb-rnd (at) list.repo.hu (send "subscribe")
+ */
+
+#include "config.h"
+
+#include <assert.h>
+#include <string.h>
+
+#include "rtree.h"
+
+#include <genrtree/genrtree_impl.h>
+#include <genrtree/genrtree_search.h>
+#include <genrtree/genrtree_delete.h>
+#include <genrtree/genrtree_debug.h>
+
Index: rtree.h
===================================================================
--- rtree.h	(nonexistent)
+++ rtree.h	(revision 25582)
@@ -0,0 +1,44 @@
+/*
+ *                            COPYRIGHT
+ *
+ *  pcb-rnd hidlib example
+ *  Copyright (C) 2019 Tibor 'Igor2' Palinkas
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *  Contact:
+ *    Project page: http://repo.hu/projects/pcb-rnd
+ *    lead developer: http://repo.hu/projects/pcb-rnd/contact.html
+ *    mailing list: pcb-rnd (at) list.repo.hu (send "subscribe")
+ */
+
+#ifndef HLE_RTREE_H
+#define HLE_RTREE_H
+
+#include "global_typedefs.h"
+
+typedef long int hle_rtree_cardinal_t;
+typedef pcb_coord_t hle_rtree_coord_t;
+
+/* Instantiate an rtree */
+#define RTR(n)  hle_rtree_ ## n
+#define RTRU(n) hle_RTREE_ ## n
+#define hle_rtree_privfunc static
+#define hle_rtree_size 6
+#define hle_rtree_stack_max 1024
+
+#include <genrtree/genrtree_api.h>
+
+#endif /* HLE_RTREE_H */