box selection

source/engine/gameobject.h

@@ -49,6 +49,7 @@ void toggleprefab(struct gameobject *go);
 struct gameobject *get_gameobject_from_id(int id);
 struct gameobject *id2go(int id);
 int id_from_gameobject(struct gameobject *go);
+int body2id(cpBody *body);
 
 void go_shape_apply(cpBody *body, cpShape *shape, struct gameobject *go);