dunde 说:
(try_for_range, ":item_no", all_items_begin, all_items_end),
(scene_spawned_item_get_num_instances, ":num_spawned_inst", ":item_no"),
(scene_item_get_num_instances, ":num_inst", ":item_no"),
(this_or_next|gt, ":num_inst", 0),
(gt, ":num_spawned_inst", 0),
(display_message,"@found item with num_inst > 0"),
(try_end),