if (ds_exists(this_frame_objects, ds_type_list))
    ds_list_destroy(this_frame_objects);
if (ds_exists(cachelist, ds_type_list))
    ds_list_destroy(cachelist);
if (ds_exists(sprite_offsets, ds_type_map))
    ds_map_destroy(sprite_offsets);
if (ds_exists(sprite_subs, ds_type_map))
    ds_map_destroy(sprite_subs);
if (ds_exists(castlereflects, ds_type_list))
    ds_list_destroy(castlereflects);
ds_priority_destroy(render_queue);
if (surface_exists(surf))
    surface_free(surf);
if (surface_exists(precreate_surf))
    surface_free(precreate_surf);
if (surface_exists(masking_surf))
    surface_free(masking_surf);