src/saveload/town_sl.cpp

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * OpenTTD 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, version 2.
   6  * OpenTTD 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.
   7  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   8  */
   9
  10 /** @file town_sl.cpp Code handling saving and loading of towns and houses */
  11
  12 #include "../stdafx.h"
  13 #include "../newgrf_house.h"
  14 #include "../town.h"
  15 #include "../landscape.h"
  16 #include "../subsidy_func.h"
  17 #include "../strings_func.h"
  18
  19 #include "saveload.h"
  20 #include "newgrf_sl.h"
  21
  22 #include "../safeguards.h"
  23
  24 /**
  25  * Rebuild all the cached variables of towns.
  26  */
  27 void RebuildTownCaches()
  28 {
  29         Town *town;
  30         InitializeBuildingCounts();
  31
  32         /* Reset town population and num_houses */
  33         FOR_ALL_TOWNS(town) {
  34                 town->cache.population = 0;
  35                 town->cache.num_houses = 0;
  36         }
  37
  38         for (TileIndex t = 0; t < MapSize(); t++) {
  39                 if (!IsTileType(t, MP_HOUSE)) continue;
  40
  41                 HouseID house_id = GetHouseType(t);
  42                 town = Town::GetByTile(t);
  43                 IncreaseBuildingCount(town, house_id);
  44                 if (IsHouseCompleted(t)) town->cache.population += HouseSpec::Get(house_id)->population;
  45
  46                 /* Increase the number of houses for every house, but only once. */
  47                 if (GetHouseNorthPart(house_id) == 0) town->cache.num_houses++;
  48         }
  49
  50         /* Update the population and num_house dependent values */
  51         FOR_ALL_TOWNS(town) {
  52                 UpdateTownRadius(town);
  53                 UpdateTownCargoes(town);
  54         }
  55         UpdateTownCargoBitmap();
  56 }
  57
  58 /**
  59  * Check and update town and house values.
  60  *
  61  * Checked are the HouseIDs. Updated are the
  62  * town population the number of houses per
  63  * town, the town radius and the max passengers
  64  * of the town.
  65  */
  66 void UpdateHousesAndTowns()
  67 {
  68         for (TileIndex t = 0; t < MapSize(); t++) {
  69                 if (!IsTileType(t, MP_HOUSE)) continue;
  70
  71                 HouseID house_id = GetCleanHouseType(t);
  72                 if (!HouseSpec::Get(house_id)->enabled && house_id >= NEW_HOUSE_OFFSET) {
  73                         /* The specs for this type of house are not available any more, so
  74                          * replace it with the substitute original house type. */
  75                         house_id = _house_mngr.GetSubstituteID(house_id);
  76                         SetHouseType(t, house_id);
  77                 }
  78         }
  79
  80         /* Check for cases when a NewGRF has set a wrong house substitute type. */
  81         for (TileIndex t = 0; t < MapSize(); t++) {
  82                 if (!IsTileType(t, MP_HOUSE)) continue;
  83
  84                 HouseID house_type = GetCleanHouseType(t);
  85                 TileIndex north_tile = t + GetHouseNorthPart(house_type); // modifies 'house_type'!
  86                 if (t == north_tile) {
  87                         const HouseSpec *hs = HouseSpec::Get(house_type);
  88                         bool valid_house = true;
  89                         if (hs->building_flags & TILE_SIZE_2x1) {
  90                                 TileIndex tile = t + TileDiffXY(1, 0);
  91                                 if (!IsTileType(tile, MP_HOUSE) || GetCleanHouseType(tile) != house_type + 1) valid_house = false;
  92                         } else if (hs->building_flags & TILE_SIZE_1x2) {
  93                                 TileIndex tile = t + TileDiffXY(0, 1);
  94                                 if (!IsTileType(tile, MP_HOUSE) || GetCleanHouseType(tile) != house_type + 1) valid_house = false;
  95                         } else if (hs->building_flags & TILE_SIZE_2x2) {
  96                                 TileIndex tile = t + TileDiffXY(0, 1);
  97                                 if (!IsTileType(tile, MP_HOUSE) || GetCleanHouseType(tile) != house_type + 1) valid_house = false;
  98                                 tile = t + TileDiffXY(1, 0);
  99                                 if (!IsTileType(tile, MP_HOUSE) || GetCleanHouseType(tile) != house_type + 2) valid_house = false;
 100                                 tile = t + TileDiffXY(1, 1);
 101                                 if (!IsTileType(tile, MP_HOUSE) || GetCleanHouseType(tile) != house_type + 3) valid_house = false;
 102                         }
 103                         /* If not all tiles of this house are present remove the house.
 104                          * The other tiles will get removed later in this loop because
 105                          * their north tile is not the correct type anymore. */
 106                         if (!valid_house) DoClearSquare(t);
 107                 } else if (!IsTileType(north_tile, MP_HOUSE) || GetCleanHouseType(north_tile) != house_type) {
 108                         /* This tile should be part of a multi-tile building but the
 109                          * north tile of this house isn't on the map. */
 110                         DoClearSquare(t);
 111                 }
 112         }
 113
 114         RebuildTownCaches();
 115 }
 116
 117 /** Save and load of towns. */
 118 static const SaveLoad _town_desc[] = {
 119         SLE_CONDVAR(Town, xy,                    SLE_FILE_U16 | SLE_VAR_U32, 0, 5),
 120         SLE_CONDVAR(Town, xy,                    SLE_UINT32,                 6, SL_MAX_VERSION),
 121
 122         SLE_CONDNULL(2, 0, 2),                   ///< population, no longer in use
 123         SLE_CONDNULL(4, 3, 84),                  ///< population, no longer in use
 124         SLE_CONDNULL(2, 0, 91),                  ///< num_houses, no longer in use
 125
 126         SLE_CONDVAR(Town, townnamegrfid,         SLE_UINT32, 66, SL_MAX_VERSION),
 127             SLE_VAR(Town, townnametype,          SLE_UINT16),
 128             SLE_VAR(Town, townnameparts,         SLE_UINT32),
 129         SLE_CONDSTR(Town, name,                  SLE_STR | SLF_ALLOW_CONTROL, 0, 84, SL_MAX_VERSION),
 130
 131             SLE_VAR(Town, flags,                 SLE_UINT8),
 132         SLE_CONDVAR(Town, statues,               SLE_FILE_U8  | SLE_VAR_U16, 0, 103),
 133         SLE_CONDVAR(Town, statues,               SLE_UINT16,               104, SL_MAX_VERSION),
 134
 135         SLE_CONDNULL(1, 0, 1),                   ///< sort_index, no longer in use
 136
 137         SLE_CONDVAR(Town, have_ratings,          SLE_FILE_U8  | SLE_VAR_U16, 0, 103),
 138         SLE_CONDVAR(Town, have_ratings,          SLE_UINT16,               104, SL_MAX_VERSION),
 139         SLE_CONDARR(Town, ratings,               SLE_INT16, 8,               0, 103),
 140         SLE_CONDARR(Town, ratings,               SLE_INT16, MAX_COMPANIES, 104, SL_MAX_VERSION),
 141         /* failed bribe attempts are stored since savegame format 4 */
 142         SLE_CONDARR(Town, unwanted,              SLE_INT8,  8,               4, 103),
 143         SLE_CONDARR(Town, unwanted,              SLE_INT8,  MAX_COMPANIES, 104, SL_MAX_VERSION),
 144
 145         SLE_CONDVAR(Town, supplied[CT_PASSENGERS].old_max, SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
 146         SLE_CONDVAR(Town, supplied[CT_MAIL].old_max,       SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
 147         SLE_CONDVAR(Town, supplied[CT_PASSENGERS].new_max, SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
 148         SLE_CONDVAR(Town, supplied[CT_MAIL].new_max,       SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
 149         SLE_CONDVAR(Town, supplied[CT_PASSENGERS].old_act, SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
 150         SLE_CONDVAR(Town, supplied[CT_MAIL].old_act,       SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
 151         SLE_CONDVAR(Town, supplied[CT_PASSENGERS].new_act, SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
 152         SLE_CONDVAR(Town, supplied[CT_MAIL].new_act,       SLE_FILE_U16 | SLE_VAR_U32, 0, 8),
 153
 154         SLE_CONDVAR(Town, supplied[CT_PASSENGERS].old_max, SLE_UINT32,                 9, 164),
 155         SLE_CONDVAR(Town, supplied[CT_MAIL].old_max,       SLE_UINT32,                 9, 164),
 156         SLE_CONDVAR(Town, supplied[CT_PASSENGERS].new_max, SLE_UINT32,                 9, 164),
 157         SLE_CONDVAR(Town, supplied[CT_MAIL].new_max,       SLE_UINT32,                 9, 164),
 158         SLE_CONDVAR(Town, supplied[CT_PASSENGERS].old_act, SLE_UINT32,                 9, 164),
 159         SLE_CONDVAR(Town, supplied[CT_MAIL].old_act,       SLE_UINT32,                 9, 164),
 160         SLE_CONDVAR(Town, supplied[CT_PASSENGERS].new_act, SLE_UINT32,                 9, 164),
 161         SLE_CONDVAR(Town, supplied[CT_MAIL].new_act,       SLE_UINT32,                 9, 164),
 162
 163         SLE_CONDNULL(2, 0, 163),                 ///< pct_pass_transported / pct_mail_transported, now computed on the fly
 164
 165         SLE_CONDVAR(Town, received[TE_FOOD].old_act,       SLE_UINT16,                 0, 164),
 166         SLE_CONDVAR(Town, received[TE_WATER].old_act,      SLE_UINT16,                 0, 164),
 167         SLE_CONDVAR(Town, received[TE_FOOD].new_act,       SLE_UINT16,                 0, 164),
 168         SLE_CONDVAR(Town, received[TE_WATER].new_act,      SLE_UINT16,                 0, 164),
 169
 170         SLE_CONDARR(Town, goal, SLE_UINT32, NUM_TE, 165, SL_MAX_VERSION),
 171
 172         SLE_CONDSTR(Town, text,                  SLE_STR | SLF_ALLOW_CONTROL, 0, 168, SL_MAX_VERSION),
 173
 174         SLE_CONDVAR(Town, time_until_rebuild,    SLE_FILE_U8 | SLE_VAR_I32,  0, 53),
 175         SLE_CONDVAR(Town, grow_counter,          SLE_FILE_U8 | SLE_VAR_U16,  0, 53),
 176         SLE_CONDVAR(Town, growth_rate,           SLE_FILE_U8 | SLE_VAR_I16,  0, 53),
 177
 178         SLE_CONDVAR(Town, time_until_rebuild,    SLE_FILE_U16 | SLE_VAR_I32,          54, SL_PATCH_PACK_TOWN_BUILDINGS-1),
 179         SLE_CONDVAR(Town, time_until_rebuild,    SLE_INT32, SL_PATCH_PACK_TOWN_BUILDINGS, SL_MAX_VERSION),
 180         SLE_CONDVAR(Town, grow_counter,          SLE_UINT16,                 54, SL_MAX_VERSION),
 181
 182         SLE_CONDVAR(Town, growth_rate,           SLE_FILE_I16 | SLE_VAR_U16, 54, 164),
 183         SLE_CONDVAR(Town, growth_rate,           SLE_UINT16,                 165, SL_MAX_VERSION),
 184
 185             SLE_VAR(Town, fund_buildings_months, SLE_UINT8),
 186             SLE_VAR(Town, road_build_months,     SLE_UINT8),
 187
 188         SLE_CONDVAR(Town, exclusivity,           SLE_UINT8,                  2, SL_MAX_VERSION),
 189         SLE_CONDVAR(Town, exclusive_counter,     SLE_UINT8,                  2, SL_MAX_VERSION),
 190
 191         SLE_CONDVAR(Town, larger_town,           SLE_BOOL,                  56, SL_MAX_VERSION),
 192         SLE_CONDVAR(Town, layout,                SLE_UINT8,                113, SL_MAX_VERSION),
 193
 194         SLE_CONDLST(Town, psa_list,            REF_STORAGE,                161, SL_MAX_VERSION),
 195
 196         SLE_CONDVAR(Town, cargo_produced,       SLE_UINT32,                166, SL_MAX_VERSION),
 197
 198         /* reserve extra space in savegame here. (currently 30 bytes) */
 199         SLE_CONDNULL(30, 2, SL_MAX_VERSION),
 200
 201         SLE_END()
 202 };
 203
 204 static const SaveLoad _town_supplied_desc[] = {
 205         SLE_CONDVAR(TransportedCargoStat<uint32>, old_max, SLE_UINT32, 165, SL_MAX_VERSION),
 206         SLE_CONDVAR(TransportedCargoStat<uint32>, new_max, SLE_UINT32, 165, SL_MAX_VERSION),
 207         SLE_CONDVAR(TransportedCargoStat<uint32>, old_act, SLE_UINT32, 165, SL_MAX_VERSION),
 208         SLE_CONDVAR(TransportedCargoStat<uint32>, new_act, SLE_UINT32, 165, SL_MAX_VERSION),
 209
 210         SLE_END()
 211 };
 212
 213 static const SaveLoad _town_received_desc[] = {
 214         SLE_CONDVAR(TransportedCargoStat<uint16>, old_max, SLE_UINT16, 165, SL_MAX_VERSION),
 215         SLE_CONDVAR(TransportedCargoStat<uint16>, new_max, SLE_UINT16, 165, SL_MAX_VERSION),
 216         SLE_CONDVAR(TransportedCargoStat<uint16>, old_act, SLE_UINT16, 165, SL_MAX_VERSION),
 217         SLE_CONDVAR(TransportedCargoStat<uint16>, new_act, SLE_UINT16, 165, SL_MAX_VERSION),
 218
 219         SLE_END()
 220 };
 221
 222 static void Save_HIDS()
 223 {
 224         Save_NewGRFMapping(_house_mngr);
 225 }
 226
 227 static void Load_HIDS()
 228 {
 229         Load_NewGRFMapping(_house_mngr);
 230 }
 231
 232 const SaveLoad *GetTileMatrixDesc()
 233 {
 234         /* Here due to private member vars. */
 235         static const SaveLoad _tilematrix_desc[] = {
 236                 SLE_VAR(AcceptanceMatrix, area.tile, SLE_UINT32),
 237                 SLE_VAR(AcceptanceMatrix, area.w,    SLE_UINT16),
 238                 SLE_VAR(AcceptanceMatrix, area.h,    SLE_UINT16),
 239                 SLE_END()
 240         };
 241
 242         return _tilematrix_desc;
 243 }
 244
 245 static void RealSave_Town(Town *t)
 246 {
 247         SlObject(t, _town_desc);
 248
 249         for (CargoID i = 0; i < NUM_CARGO; i++) {
 250                 SlObject(&t->supplied[i], _town_supplied_desc);
 251         }
 252         for (int i = TE_BEGIN; i < NUM_TE; i++) {
 253                 SlObject(&t->received[i], _town_received_desc);
 254         }
 255
 256         SlObject(&t->cargo_accepted, GetTileMatrixDesc());
 257         if (t->cargo_accepted.area.w != 0) {
 258                 uint arr_len = t->cargo_accepted.area.w / AcceptanceMatrix::GRID * t->cargo_accepted.area.h / AcceptanceMatrix::GRID;
 259                 SlArray(t->cargo_accepted.data, arr_len, SLE_UINT32);
 260         }
 261 }
 262
 263 static void Save_TOWN()
 264 {
 265         Town *t;
 266
 267         FOR_ALL_TOWNS(t) {
 268                 SlSetArrayIndex(t->index);
 269                 SlAutolength((AutolengthProc*)RealSave_Town, t);
 270         }
 271 }
 272
 273 static void Load_TOWN()
 274 {
 275         int index;
 276
 277         while ((index = SlIterateArray()) != -1) {
 278                 Town *t = new (index) Town();
 279                 SlObject(t, _town_desc);
 280
 281                 for (CargoID i = 0; i < NUM_CARGO; i++) {
 282                         SlObject(&t->supplied[i], _town_supplied_desc);
 283                 }
 284                 for (int i = TE_BEGIN; i < TE_END; i++) {
 285                         SlObject(&t->received[i], _town_received_desc);
 286                 }
 287
 288                 if (t->townnamegrfid == 0 && !IsInsideMM(t->townnametype, SPECSTR_TOWNNAME_START, SPECSTR_TOWNNAME_LAST + 1) && GetStringTab(t->townnametype) != TEXT_TAB_OLD_CUSTOM) {
 289                         SlErrorCorrupt("Invalid town name generator");
 290                 }
 291
 292                 if (IsSavegameVersionBefore(166)) continue;
 293
 294                 SlObject(&t->cargo_accepted, GetTileMatrixDesc());
 295                 if (t->cargo_accepted.area.w != 0) {
 296                         uint arr_len = t->cargo_accepted.area.w / AcceptanceMatrix::GRID * t->cargo_accepted.area.h / AcceptanceMatrix::GRID;
 297                         t->cargo_accepted.data = MallocT<uint32>(arr_len);
 298                         SlArray(t->cargo_accepted.data, arr_len, SLE_UINT32);
 299
 300                         /* Rebuild total cargo acceptance. */
 301                         UpdateTownCargoTotal(t);
 302                 }
 303         }
 304 }
 305
 306 /** Fix pointers when loading town data. */
 307 static void Ptrs_TOWN()
 308 {
 309         /* Don't run when savegame version lower than 161. */
 310         if (IsSavegameVersionBefore(161)) return;
 311
 312         Town *t;
 313         FOR_ALL_TOWNS(t) {
 314                 SlObject(t, _town_desc);
 315         }
 316 }
 317
 318 /** Chunk handler for towns. */
 319 extern const ChunkHandler _town_chunk_handlers[] = {
 320         { 'HIDS', Save_HIDS, Load_HIDS,      NULL, NULL, CH_ARRAY },
 321         { 'CITY', Save_TOWN, Load_TOWN, Ptrs_TOWN, NULL, CH_ARRAY | CH_LAST},
 322 };