switch (feature) {

				case GSF_TRAINS:

				case GSF_ROADVEHICLES:

				case GSF_SHIPS:

				case GSF_AIRCRAFT:

				case GSF_STATIONS:

				case GSF_CANALS:

				case GSF_CARGOES:

				case GSF_AIRPORTS:

				case GSF_RAILTYPES:

				case GSF_ROADTYPES:

				case GSF_TRAMTYPES:

				{

					byte num_loaded  = type;

					byte num_loading = buf->ReadByte();

					if (!_cur.HasValidSpriteSets(feature)) {

						grfmsg(0, "NewSpriteGroup: No sprite set to work on! Skipping");

						return;

					}

					grfmsg(6, "NewSpriteGroup: New SpriteGroup 0x%02X, %u loaded, %u loading",

							setid, num_loaded, num_loading);

					if (num_loaded + num_loading == 1) {

						/* Avoid creating 'Real' sprite group if only one option. */

						uint16 spriteid = buf->ReadWord();

						act_group = CreateGroupFromGroupID(feature, setid, type, spriteid);

						grfmsg(8, "NewSpriteGroup: one result, skipping RealSpriteGroup = subset %u", spriteid);

						break;

					}

					std::vector<uint16> loaded;

					std::vector<uint16> loading;

					for (uint i = 0; i < num_loaded; i++) {

						loaded.push_back(buf->ReadWord());

						grfmsg(8, "NewSpriteGroup: + rg->loaded[%i]  = subset %u", i, loaded[i]);

					}

					for (uint i = 0; i < num_loading; i++) {

						loading.push_back(buf->ReadWord());

						grfmsg(8, "NewSpriteGroup: + rg->loading[%i] = subset %u", i, loading[i]);

					}

					if (std::adjacent_find(loaded.begin(),  loaded.end(),  std::not_equal_to<>()) == loaded.end() &&

						std::adjacent_find(loading.begin(), loading.end(), std::not_equal_to<>()) == loading.end() &&

						loaded[0] == loading[0])