# station_cmd.cpp

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    00001 /* $Id: station_cmd.cpp 24961 2013-02-03 10:03:38Z rubidium $ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * 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.
    00006  * 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.
    00007  * 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/>.
    00008  */
    00009
    00012 #include "stdafx.h"
    00013 #include "aircraft.h"
    00014 #include "bridge_map.h"
    00015 #include "cmd_helper.h"
    00016 #include "viewport_func.h"
    00017 #include "command_func.h"
    00018 #include "town.h"
    00019 #include "news_func.h"
    00020 #include "train.h"
    00021 #include "ship.h"
    00022 #include "roadveh.h"
    00023 #include "industry.h"
    00024 #include "newgrf_cargo.h"
    00025 #include "newgrf_debug.h"
    00026 #include "newgrf_station.h"
    00027 #include "newgrf_canal.h" /* For the buoy */
    00028 #include "pathfinder/yapf/yapf_cache.h"
    00029 #include "road_internal.h" /* For drawing catenary/checking road removal */
    00030 #include "autoslope.h"
    00031 #include "water.h"
    00032 #include "strings_func.h"
    00033 #include "clear_func.h"
    00034 #include "date_func.h"
    00035 #include "vehicle_func.h"
    00036 #include "string_func.h"
    00037 #include "animated_tile_func.h"
    00038 #include "elrail_func.h"
    00039 #include "station_base.h"
    00040 #include "roadstop_base.h"
    00041 #include "newgrf_railtype.h"
    00042 #include "waypoint_base.h"
    00043 #include "waypoint_func.h"
    00044 #include "pbs.h"
    00045 #include "debug.h"
    00046 #include "core/random_func.hpp"
    00047 #include "company_base.h"
    00048 #include "table/airporttile_ids.h"
    00049 #include "newgrf_airporttiles.h"
    00050 #include "order_backup.h"
    00051 #include "newgrf_house.h"
    00052 #include "company_gui.h"
    00053 #include "widgets/station_widget.h"
    00054
    00055 #include "table/strings.h"
    00056
    00063 bool IsHangar(TileIndex t)
    00064 {
    00065   assert(IsTileType(t, MP_STATION));
    00066
    00067   /* If the tile isn't an airport there's no chance it's a hangar. */
    00068   if (!IsAirport(t)) return false;
    00069
    00070   const Station *st = Station::GetByTile(t);
    00071   const AirportSpec *as = st->airport.GetSpec();
    00072
    00073   for (uint i = 0; i < as->nof_depots; i++) {
    00074     if (st->airport.GetHangarTile(i) == t) return true;
    00075   }
    00076
    00077   return false;
    00078 }
    00079
    00087 template <class T>
    00088 CommandCost GetStationAround(TileArea ta, StationID closest_station, T **st)
    00089 {
    00090   ta.tile -= TileDiffXY(1, 1);
    00091   ta.w    += 2;
    00092   ta.h    += 2;
    00093
    00094   /* check around to see if there's any stations there */
    00095   TILE_AREA_LOOP(tile_cur, ta) {
    00096     if (IsTileType(tile_cur, MP_STATION)) {
    00097       StationID t = GetStationIndex(tile_cur);
    00098       if (!T::IsValidID(t)) continue;
    00099
    00100       if (closest_station == INVALID_STATION) {
    00101         closest_station = t;
    00102       } else if (closest_station != t) {
    00103         return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00104       }
    00105     }
    00106   }
    00107   *st = (closest_station == INVALID_STATION) ? NULL : T::Get(closest_station);
    00108   return CommandCost();
    00109 }
    00110
    00116 typedef bool (*CMSAMatcher)(TileIndex tile);
    00117
    00124 static int CountMapSquareAround(TileIndex tile, CMSAMatcher cmp)
    00125 {
    00126   int num = 0;
    00127
    00128   for (int dx = -3; dx <= 3; dx++) {
    00129     for (int dy = -3; dy <= 3; dy++) {
    00130       TileIndex t = TileAddWrap(tile, dx, dy);
    00131       if (t != INVALID_TILE && cmp(t)) num++;
    00132     }
    00133   }
    00134
    00135   return num;
    00136 }
    00137
    00143 static bool CMSAMine(TileIndex tile)
    00144 {
    00145   /* No industry */
    00146   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00147
    00148   const Industry *ind = Industry::GetByTile(tile);
    00149
    00150   /* No extractive industry */
    00151   if ((GetIndustrySpec(ind->type)->life_type & INDUSTRYLIFE_EXTRACTIVE) == 0) return false;
    00152
    00153   for (uint i = 0; i < lengthof(ind->produced_cargo); i++) {
    00154     /* The industry extracts something non-liquid, i.e. no oil or plastic, so it is a mine.
    00155      * Also the production of passengers and mail is ignored. */
    00156     if (ind->produced_cargo[i] != CT_INVALID &&
    00157         (CargoSpec::Get(ind->produced_cargo[i])->classes & (CC_LIQUID | CC_PASSENGERS | CC_MAIL)) == 0) {
    00158       return true;
    00159     }
    00160   }
    00161
    00162   return false;
    00163 }
    00164
    00170 static bool CMSAWater(TileIndex tile)
    00171 {
    00172   return IsTileType(tile, MP_WATER) && IsWater(tile);
    00173 }
    00174
    00180 static bool CMSATree(TileIndex tile)
    00181 {
    00182   return IsTileType(tile, MP_TREES);
    00183 }
    00184
    00185 #define M(x) ((x) - STR_SV_STNAME)
    00186
    00187 enum StationNaming {
    00188   STATIONNAMING_RAIL,
    00189   STATIONNAMING_ROAD,
    00190   STATIONNAMING_AIRPORT,
    00191   STATIONNAMING_OILRIG,
    00192   STATIONNAMING_DOCK,
    00193   STATIONNAMING_HELIPORT,
    00194 };
    00195
    00197 struct StationNameInformation {
    00198   uint32 free_names;
    00199   bool *indtypes;
    00200 };
    00201
    00210 static bool FindNearIndustryName(TileIndex tile, void *user_data)
    00211 {
    00212   /* All already found industry types */
    00213   StationNameInformation *sni = (StationNameInformation*)user_data;
    00214   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00215
    00216   /* If the station name is undefined it means that it doesn't name a station */
    00217   IndustryType indtype = GetIndustryType(tile);
    00218   if (GetIndustrySpec(indtype)->station_name == STR_UNDEFINED) return false;
    00219
    00220   /* In all cases if an industry that provides a name is found two of
    00221    * the standard names will be disabled. */
    00222   sni->free_names &= ~(1 << M(STR_SV_STNAME_OILFIELD) | 1 << M(STR_SV_STNAME_MINES));
    00223   return !sni->indtypes[indtype];
    00224 }
    00225
    00226 static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming name_class)
    00227 {
    00228   static const uint32 _gen_station_name_bits[] = {
    00229     0,                                       // STATIONNAMING_RAIL
    00230     0,                                       // STATIONNAMING_ROAD
    00231     1U << M(STR_SV_STNAME_AIRPORT),          // STATIONNAMING_AIRPORT
    00232     1U << M(STR_SV_STNAME_OILFIELD),         // STATIONNAMING_OILRIG
    00233     1U << M(STR_SV_STNAME_DOCKS),            // STATIONNAMING_DOCK
    00234     1U << M(STR_SV_STNAME_HELIPORT),         // STATIONNAMING_HELIPORT
    00235   };
    00236
    00237   const Town *t = st->town;
    00238   uint32 free_names = UINT32_MAX;
    00239
    00240   bool indtypes[NUM_INDUSTRYTYPES];
    00241   memset(indtypes, 0, sizeof(indtypes));
    00242
    00243   const Station *s;
    00244   FOR_ALL_STATIONS(s) {
    00245     if (s != st && s->town == t) {
    00246       if (s->indtype != IT_INVALID) {
    00247         indtypes[s->indtype] = true;
    00248         continue;
    00249       }
    00250       uint str = M(s->string_id);
    00251       if (str <= 0x20) {
    00252         if (str == M(STR_SV_STNAME_FOREST)) {
    00253           str = M(STR_SV_STNAME_WOODS);
    00254         }
    00255         ClrBit(free_names, str);
    00256       }
    00257     }
    00258   }
    00259
    00260   TileIndex indtile = tile;
    00261   StationNameInformation sni = { free_names, indtypes };
    00262   if (CircularTileSearch(&indtile, 7, FindNearIndustryName, &sni)) {
    00263     /* An industry has been found nearby */
    00264     IndustryType indtype = GetIndustryType(indtile);
    00265     const IndustrySpec *indsp = GetIndustrySpec(indtype);
    00266     /* STR_NULL means it only disables oil rig/mines */
    00267     if (indsp->station_name != STR_NULL) {
    00268       st->indtype = indtype;
    00269       return STR_SV_STNAME_FALLBACK;
    00270     }
    00271   }
    00272
    00273   /* Oil rigs/mines name could be marked not free by looking for a near by industry. */
    00274   free_names = sni.free_names;
    00275
    00276   /* check default names */
    00277   uint32 tmp = free_names & _gen_station_name_bits[name_class];
    00278   if (tmp != 0) return STR_SV_STNAME + FindFirstBit(tmp);
    00279
    00280   /* check mine? */
    00281   if (HasBit(free_names, M(STR_SV_STNAME_MINES))) {
    00282     if (CountMapSquareAround(tile, CMSAMine) >= 2) {
    00283       return STR_SV_STNAME_MINES;
    00284     }
    00285   }
    00286
    00287   /* check close enough to town to get central as name? */
    00288   if (DistanceMax(tile, t->xy) < 8) {
    00289     if (HasBit(free_names, M(STR_SV_STNAME))) return STR_SV_STNAME;
    00290
    00291     if (HasBit(free_names, M(STR_SV_STNAME_CENTRAL))) return STR_SV_STNAME_CENTRAL;
    00292   }
    00293
    00294   /* Check lakeside */
    00295   if (HasBit(free_names, M(STR_SV_STNAME_LAKESIDE)) &&
    00296       DistanceFromEdge(tile) < 20 &&
    00297       CountMapSquareAround(tile, CMSAWater) >= 5) {
    00298     return STR_SV_STNAME_LAKESIDE;
    00299   }
    00300
    00301   /* Check woods */
    00302   if (HasBit(free_names, M(STR_SV_STNAME_WOODS)) && (
    00303         CountMapSquareAround(tile, CMSATree) >= 8 ||
    00304         CountMapSquareAround(tile, IsTileForestIndustry) >= 2)
    00305       ) {
    00306     return _settings_game.game_creation.landscape == LT_TROPIC ? STR_SV_STNAME_FOREST : STR_SV_STNAME_WOODS;
    00307   }
    00308
    00309   /* check elevation compared to town */
    00310   int z = GetTileZ(tile);
    00311   int z2 = GetTileZ(t->xy);
    00312   if (z < z2) {
    00313     if (HasBit(free_names, M(STR_SV_STNAME_VALLEY))) return STR_SV_STNAME_VALLEY;
    00314   } else if (z > z2) {
    00315     if (HasBit(free_names, M(STR_SV_STNAME_HEIGHTS))) return STR_SV_STNAME_HEIGHTS;
    00316   }
    00317
    00318   /* check direction compared to town */
    00319   static const int8 _direction_and_table[] = {
    00320     ~( (1 << M(STR_SV_STNAME_WEST))  | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00321     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00322     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00323     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_EAST)) ),
    00324   };
    00325
    00326   free_names &= _direction_and_table[
    00327     (TileX(tile) < TileX(t->xy)) +
    00328     (TileY(tile) < TileY(t->xy)) * 2];
    00329
    00330   tmp = free_names & ((1 << 1) | (1 << 2) | (1 << 3) | (1 << 4) | (1 << 6) | (1 << 7) | (1 << 12) | (1 << 26) | (1 << 27) | (1 << 28) | (1 << 29) | (1 << 30));
    00331   return (tmp == 0) ? STR_SV_STNAME_FALLBACK : (STR_SV_STNAME + FindFirstBit(tmp));
    00332 }
    00333 #undef M
    00334
    00340 static Station *GetClosestDeletedStation(TileIndex tile)
    00341 {
    00342   uint threshold = 8;
    00343   Station *best_station = NULL;
    00344   Station *st;
    00345
    00346   FOR_ALL_STATIONS(st) {
    00347     if (!st->IsInUse() && st->owner == _current_company) {
    00348       uint cur_dist = DistanceManhattan(tile, st->xy);
    00349
    00350       if (cur_dist < threshold) {
    00351         threshold = cur_dist;
    00352         best_station = st;
    00353       }
    00354     }
    00355   }
    00356
    00357   return best_station;
    00358 }
    00359
    00360
    00361 void Station::GetTileArea(TileArea *ta, StationType type) const
    00362 {
    00363   switch (type) {
    00364     case STATION_RAIL:
    00365       *ta = this->train_station;
    00366       return;
    00367
    00368     case STATION_AIRPORT:
    00369       *ta = this->airport;
    00370       return;
    00371
    00372     case STATION_TRUCK:
    00373       *ta = this->truck_station;
    00374       return;
    00375
    00376     case STATION_BUS:
    00377       *ta = this->bus_station;
    00378       return;
    00379
    00380     case STATION_DOCK:
    00381     case STATION_OILRIG:
    00382       ta->tile = this->dock_tile;
    00383       break;
    00384
    00385     default: NOT_REACHED();
    00386   }
    00387
    00388   ta->w = 1;
    00389   ta->h = 1;
    00390 }
    00391
    00395 void Station::UpdateVirtCoord()
    00396 {
    00397   Point pt = RemapCoords2(TileX(this->xy) * TILE_SIZE, TileY(this->xy) * TILE_SIZE);
    00398
    00399   pt.y -= 32 * ZOOM_LVL_BASE;
    00400   if ((this->facilities & FACIL_AIRPORT) && this->airport.type == AT_OILRIG) pt.y -= 16 * ZOOM_LVL_BASE;
    00401
    00402   SetDParam(0, this->index);
    00403   SetDParam(1, this->facilities);
    00404   this->sign.UpdatePosition(pt.x, pt.y, STR_VIEWPORT_STATION);
    00405
    00406   SetWindowDirty(WC_STATION_VIEW, this->index);
    00407 }
    00408
    00410 void UpdateAllStationVirtCoords()
    00411 {
    00412   BaseStation *st;
    00413
    00414   FOR_ALL_BASE_STATIONS(st) {
    00415     st->UpdateVirtCoord();
    00416   }
    00417 }
    00418
    00424 static uint GetAcceptanceMask(const Station *st)
    00425 {
    00426   uint mask = 0;
    00427
    00428   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00429     if (HasBit(st->goods[i].acceptance_pickup, GoodsEntry::GES_ACCEPTANCE)) mask |= 1 << i;
    00430   }
    00431   return mask;
    00432 }
    00433
    00438 static void ShowRejectOrAcceptNews(const Station *st, uint num_items, CargoID *cargo, StringID msg)
    00439 {
    00440   for (uint i = 0; i < num_items; i++) {
    00441     SetDParam(i + 1, CargoSpec::Get(cargo[i])->name);
    00442   }
    00443
    00444   SetDParam(0, st->index);
    00445   AddNewsItem(msg, NT_ACCEPTANCE, NF_INCOLOUR | NF_SMALL, NR_STATION, st->index);
    00446 }
    00447
    00455 CargoArray GetProductionAroundTiles(TileIndex tile, int w, int h, int rad)
    00456 {
    00457   CargoArray produced;
    00458
    00459   int x = TileX(tile);
    00460   int y = TileY(tile);
    00461
    00462   /* expand the region by rad tiles on each side
    00463    * while making sure that we remain inside the board. */
    00464   int x2 = min(x + w + rad, MapSizeX());
    00465   int x1 = max(x - rad, 0);
    00466
    00467   int y2 = min(y + h + rad, MapSizeY());
    00468   int y1 = max(y - rad, 0);
    00469
    00470   assert(x1 < x2);
    00471   assert(y1 < y2);
    00472   assert(w > 0);
    00473   assert(h > 0);
    00474
    00475   TileArea ta(TileXY(x1, y1), TileXY(x2 - 1, y2 - 1));
    00476
    00477   /* Loop over all tiles to get the produced cargo of
    00478    * everything except industries */
    00479   TILE_AREA_LOOP(tile, ta) AddProducedCargo(tile, produced);
    00480
    00481   /* Loop over the industries. They produce cargo for
    00482    * anything that is within 'rad' from their bounding
    00483    * box. As such if you have e.g. a oil well the tile
    00484    * area loop might not hit an industry tile while
    00485    * the industry would produce cargo for the station.
    00486    */
    00487   const Industry *i;
    00488   FOR_ALL_INDUSTRIES(i) {
    00489     if (!ta.Intersects(i->location)) continue;
    00490
    00491     for (uint j = 0; j < lengthof(i->produced_cargo); j++) {
    00492       CargoID cargo = i->produced_cargo[j];
    00493       if (cargo != CT_INVALID) produced[cargo]++;
    00494     }
    00495   }
    00496
    00497   return produced;
    00498 }
    00499
    00508 CargoArray GetAcceptanceAroundTiles(TileIndex tile, int w, int h, int rad, uint32 *always_accepted)
    00509 {
    00510   CargoArray acceptance;
    00511   if (always_accepted != NULL) *always_accepted = 0;
    00512
    00513   int x = TileX(tile);
    00514   int y = TileY(tile);
    00515
    00516   /* expand the region by rad tiles on each side
    00517    * while making sure that we remain inside the board. */
    00518   int x2 = min(x + w + rad, MapSizeX());
    00519   int y2 = min(y + h + rad, MapSizeY());
    00520   int x1 = max(x - rad, 0);
    00521   int y1 = max(y - rad, 0);
    00522
    00523   assert(x1 < x2);
    00524   assert(y1 < y2);
    00525   assert(w > 0);
    00526   assert(h > 0);
    00527
    00528   for (int yc = y1; yc != y2; yc++) {
    00529     for (int xc = x1; xc != x2; xc++) {
    00530       TileIndex tile = TileXY(xc, yc);
    00531       AddAcceptedCargo(tile, acceptance, always_accepted);
    00532     }
    00533   }
    00534
    00535   return acceptance;
    00536 }
    00537
    00543 void UpdateStationAcceptance(Station *st, bool show_msg)
    00544 {
    00545   /* old accepted goods types */
    00546   uint old_acc = GetAcceptanceMask(st);
    00547
    00548   /* And retrieve the acceptance. */
    00549   CargoArray acceptance;
    00550   if (!st->rect.IsEmpty()) {
    00551     acceptance = GetAcceptanceAroundTiles(
    00552       TileXY(st->rect.left, st->rect.top),
    00553       st->rect.right  - st->rect.left + 1,
    00554       st->rect.bottom - st->rect.top  + 1,
    00555       st->GetCatchmentRadius(),
    00556       &st->always_accepted
    00557     );
    00558   }
    00559
    00560   /* Adjust in case our station only accepts fewer kinds of goods */
    00561   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00562     uint amt = min(acceptance[i], 15);
    00563
    00564     /* Make sure the station can accept the goods type. */
    00565     bool is_passengers = IsCargoInClass(i, CC_PASSENGERS);
    00566     if ((!is_passengers && !(st->facilities & ~FACIL_BUS_STOP)) ||
    00567         (is_passengers && !(st->facilities & ~FACIL_TRUCK_STOP))) {
    00568       amt = 0;
    00569     }
    00570
    00571     SB(st->goods[i].acceptance_pickup, GoodsEntry::GES_ACCEPTANCE, 1, amt >= 8);
    00572   }
    00573
    00574   /* Only show a message in case the acceptance was actually changed. */
    00575   uint new_acc = GetAcceptanceMask(st);
    00576   if (old_acc == new_acc) return;
    00577
    00578   /* show a message to report that the acceptance was changed? */
    00579   if (show_msg && st->owner == _local_company && st->IsInUse()) {
    00580     /* List of accept and reject strings for different number of
    00581      * cargo types */
    00582     static const StringID accept_msg[] = {
    00583       STR_NEWS_STATION_NOW_ACCEPTS_CARGO,
    00584       STR_NEWS_STATION_NOW_ACCEPTS_CARGO_AND_CARGO,
    00585     };
    00586     static const StringID reject_msg[] = {
    00587       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO,
    00588       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO_OR_CARGO,
    00589     };
    00590
    00591     /* Array of accepted and rejected cargo types */
    00592     CargoID accepts[2] = { CT_INVALID, CT_INVALID };
    00593     CargoID rejects[2] = { CT_INVALID, CT_INVALID };
    00594     uint num_acc = 0;
    00595     uint num_rej = 0;
    00596
    00597     /* Test each cargo type to see if its acceptance has changed */
    00598     for (CargoID i = 0; i < NUM_CARGO; i++) {
    00599       if (HasBit(new_acc, i)) {
    00600         if (!HasBit(old_acc, i) && num_acc < lengthof(accepts)) {
    00601           /* New cargo is accepted */
    00602           accepts[num_acc++] = i;
    00603         }
    00604       } else {
    00605         if (HasBit(old_acc, i) && num_rej < lengthof(rejects)) {
    00606           /* Old cargo is no longer accepted */
    00607           rejects[num_rej++] = i;
    00608         }
    00609       }
    00610     }
    00611
    00612     /* Show news message if there are any changes */
    00613     if (num_acc > 0) ShowRejectOrAcceptNews(st, num_acc, accepts, accept_msg[num_acc - 1]);
    00614     if (num_rej > 0) ShowRejectOrAcceptNews(st, num_rej, rejects, reject_msg[num_rej - 1]);
    00615   }
    00616
    00617   /* redraw the station view since acceptance changed */
    00618   SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ACCEPT_RATING_LIST);
    00619 }
    00620
    00621 static void UpdateStationSignCoord(BaseStation *st)
    00622 {
    00623   const StationRect *r = &st->rect;
    00624
    00625   if (r->IsEmpty()) return; // no tiles belong to this station
    00626
    00627   /* clamp sign coord to be inside the station rect */
    00628   st->xy = TileXY(ClampU(TileX(st->xy), r->left, r->right), ClampU(TileY(st->xy), r->top, r->bottom));
    00629   st->UpdateVirtCoord();
    00630 }
    00631
    00641 static CommandCost BuildStationPart(Station **st, DoCommandFlag flags, bool reuse, TileArea area, StationNaming name_class)
    00642 {
    00643   /* Find a deleted station close to us */
    00644   if (*st == NULL && reuse) *st = GetClosestDeletedStation(area.tile);
    00645
    00646   if (*st != NULL) {
    00647     if ((*st)->owner != _current_company) {
    00648       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    00649     }
    00650
    00651     CommandCost ret = (*st)->rect.BeforeAddRect(area.tile, area.w, area.h, StationRect::ADD_TEST);
    00652     if (ret.Failed()) return ret;
    00653   } else {
    00654     /* allocate and initialize new station */
    00655     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    00656
    00657     if (flags & DC_EXEC) {
    00658       *st = new Station(area.tile);
    00659
    00660       (*st)->town = ClosestTownFromTile(area.tile, UINT_MAX);
    00661       (*st)->string_id = GenerateStationName(*st, area.tile, name_class);
    00662
    00663       if (Company::IsValidID(_current_company)) {
    00664         SetBit((*st)->town->have_ratings, _current_company);
    00665       }
    00666     }
    00667   }
    00668   return CommandCost();
    00669 }
    00670
    00677 static void DeleteStationIfEmpty(BaseStation *st)
    00678 {
    00679   if (!st->IsInUse()) {
    00680     st->delete_ctr = 0;
    00681     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    00682   }
    00683   /* station remains but it probably lost some parts - station sign should stay in the station boundaries */
    00684   UpdateStationSignCoord(st);
    00685 }
    00686
    00687 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags);
    00688
    00698 CommandCost CheckBuildableTile(TileIndex tile, uint invalid_dirs, int &allowed_z, bool allow_steep, bool check_bridge = true)
    00699 {
    00700   if (check_bridge && MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) {
    00701     return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    00702   }
    00703
    00704   CommandCost ret = EnsureNoVehicleOnGround(tile);
    00705   if (ret.Failed()) return ret;
    00706
    00707   int z;
    00708   Slope tileh = GetTileSlope(tile, &z);
    00709
    00710   /* Prohibit building if
    00711    *   1) The tile is "steep" (i.e. stretches two height levels).
    00712    *   2) The tile is non-flat and the build_on_slopes switch is disabled.
    00713    */
    00714   if ((!allow_steep && IsSteepSlope(tileh)) ||
    00715       ((!_settings_game.construction.build_on_slopes) && tileh != SLOPE_FLAT)) {
    00716     return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00717   }
    00718
    00719   CommandCost cost(EXPENSES_CONSTRUCTION);
    00720   int flat_z = z + GetSlopeMaxZ(tileh);
    00721   if (tileh != SLOPE_FLAT) {
    00722     /* Forbid building if the tile faces a slope in a invalid direction. */
    00723     for (DiagDirection dir = DIAGDIR_BEGIN; dir != DIAGDIR_END; dir++) {
    00724       if (HasBit(invalid_dirs, dir) && !CanBuildDepotByTileh(dir, tileh)) {
    00725         return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00726       }
    00727     }
    00728     cost.AddCost(_price[PR_BUILD_FOUNDATION]);
    00729   }
    00730
    00731   /* The level of this tile must be equal to allowed_z. */
    00732   if (allowed_z < 0) {
    00733     /* First tile. */
    00734     allowed_z = flat_z;
    00735   } else if (allowed_z != flat_z) {
    00736     return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00737   }
    00738
    00739   return cost;
    00740 }
    00741
    00748 CommandCost CheckFlatLand(TileArea tile_area, DoCommandFlag flags)
    00749 {
    00750   CommandCost cost(EXPENSES_CONSTRUCTION);
    00751   int allowed_z = -1;
    00752
    00753   TILE_AREA_LOOP(tile_cur, tile_area) {
    00754     CommandCost ret = CheckBuildableTile(tile_cur, 0, allowed_z, true);
    00755     if (ret.Failed()) return ret;
    00756     cost.AddCost(ret);
    00757
    00758     ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00759     if (ret.Failed()) return ret;
    00760     cost.AddCost(ret);
    00761   }
    00762
    00763   return cost;
    00764 }
    00765
    00780 static CommandCost CheckFlatLandRailStation(TileArea tile_area, DoCommandFlag flags, Axis axis, StationID *station, RailType rt, SmallVector<Train *, 4> &affected_vehicles, StationClassID spec_class, byte spec_index, byte plat_len, byte numtracks)
    00781 {
    00782   CommandCost cost(EXPENSES_CONSTRUCTION);
    00783   int allowed_z = -1;
    00784   uint invalid_dirs = 5 << axis;
    00785
    00786   const StationSpec *statspec = StationClass::Get(spec_class)->GetSpec(spec_index);
    00787   bool slope_cb = statspec != NULL && HasBit(statspec->callback_mask, CBM_STATION_SLOPE_CHECK);
    00788
    00789   TILE_AREA_LOOP(tile_cur, tile_area) {
    00790     CommandCost ret = CheckBuildableTile(tile_cur, invalid_dirs, allowed_z, false);
    00791     if (ret.Failed()) return ret;
    00792     cost.AddCost(ret);
    00793
    00794     if (slope_cb) {
    00795       /* Do slope check if requested. */
    00796       ret = PerformStationTileSlopeCheck(tile_area.tile, tile_cur, statspec, axis, plat_len, numtracks);
    00797       if (ret.Failed()) return ret;
    00798     }
    00799
    00800     /* if station is set, then we have special handling to allow building on top of already existing stations.
    00801      * so station points to INVALID_STATION if we can build on any station.
    00802      * Or it points to a station if we're only allowed to build on exactly that station. */
    00803     if (station != NULL && IsTileType(tile_cur, MP_STATION)) {
    00804       if (!IsRailStation(tile_cur)) {
    00805         return ClearTile_Station(tile_cur, DC_AUTO); // get error message
    00806       } else {
    00807         StationID st = GetStationIndex(tile_cur);
    00808         if (*station == INVALID_STATION) {
    00809           *station = st;
    00810         } else if (*station != st) {
    00811           return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00812         }
    00813       }
    00814     } else {
    00815       /* Rail type is only valid when building a railway station; if station to
    00816        * build isn't a rail station it's INVALID_RAILTYPE. */
    00817       if (rt != INVALID_RAILTYPE &&
    00818           IsPlainRailTile(tile_cur) && !HasSignals(tile_cur) &&
    00819           HasPowerOnRail(GetRailType(tile_cur), rt)) {
    00820         /* Allow overbuilding if the tile:
    00821          *  - has rail, but no signals
    00822          *  - it has exactly one track
    00823          *  - the track is in line with the station
    00824          *  - the current rail type has power on the to-be-built type (e.g. convert normal rail to el rail)
    00825          */
    00826         TrackBits tracks = GetTrackBits(tile_cur);
    00827         Track track = RemoveFirstTrack(&tracks);
    00828         Track expected_track = HasBit(invalid_dirs, DIAGDIR_NE) ? TRACK_X : TRACK_Y;
    00829
    00830         if (tracks == TRACK_BIT_NONE && track == expected_track) {
    00831           /* Check for trains having a reservation for this tile. */
    00832           if (HasBit(GetRailReservationTrackBits(tile_cur), track)) {
    00833             Train *v = GetTrainForReservation(tile_cur, track);
    00834             if (v != NULL) {
    00835               *affected_vehicles.Append() = v;
    00836             }
    00837           }
    00838           CommandCost ret = DoCommand(tile_cur, 0, track, flags, CMD_REMOVE_SINGLE_RAIL);
    00839           if (ret.Failed()) return ret;
    00840           cost.AddCost(ret);
    00841           /* With flags & ~DC_EXEC CmdLandscapeClear would fail since the rail still exists */
    00842           continue;
    00843         }
    00844       }
    00845       ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00846       if (ret.Failed()) return ret;
    00847       cost.AddCost(ret);
    00848     }
    00849   }
    00850
    00851   return cost;
    00852 }
    00853
    00866 static CommandCost CheckFlatLandRoadStop(TileArea tile_area, DoCommandFlag flags, uint invalid_dirs, bool is_drive_through, bool is_truck_stop, Axis axis, StationID *station, RoadTypes rts)
    00867 {
    00868   CommandCost cost(EXPENSES_CONSTRUCTION);
    00869   int allowed_z = -1;
    00870
    00871   TILE_AREA_LOOP(cur_tile, tile_area) {
    00872     CommandCost ret = CheckBuildableTile(cur_tile, invalid_dirs, allowed_z, !is_drive_through);
    00873     if (ret.Failed()) return ret;
    00874     cost.AddCost(ret);
    00875
    00876     /* If station is set, then we have special handling to allow building on top of already existing stations.
    00877      * Station points to INVALID_STATION if we can build on any station.
    00878      * Or it points to a station if we're only allowed to build on exactly that station. */
    00879     if (station != NULL && IsTileType(cur_tile, MP_STATION)) {
    00880       if (!IsRoadStop(cur_tile)) {
    00881         return ClearTile_Station(cur_tile, DC_AUTO); // Get error message.
    00882       } else {
    00883         if (is_truck_stop != IsTruckStop(cur_tile) ||
    00884             is_drive_through != IsDriveThroughStopTile(cur_tile)) {
    00885           return ClearTile_Station(cur_tile, DC_AUTO); // Get error message.
    00886         }
    00887         /* Drive-through station in the wrong direction. */
    00888         if (is_drive_through && IsDriveThroughStopTile(cur_tile) && DiagDirToAxis(GetRoadStopDir(cur_tile)) != axis){
    00889           return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    00890         }
    00891         StationID st = GetStationIndex(cur_tile);
    00892         if (*station == INVALID_STATION) {
    00893           *station = st;
    00894         } else if (*station != st) {
    00895           return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00896         }
    00897       }
    00898     } else {
    00899       bool build_over_road = is_drive_through && IsNormalRoadTile(cur_tile);
    00900       /* Road bits in the wrong direction. */
    00901       RoadBits rb = IsNormalRoadTile(cur_tile) ? GetAllRoadBits(cur_tile) : ROAD_NONE;
    00902       if (build_over_road && (rb & (axis == AXIS_X ? ROAD_Y : ROAD_X)) != 0) {
    00903         /* Someone was pedantic and *NEEDED* three fracking different error messages. */
    00904         switch (CountBits(rb)) {
    00905           case 1:
    00906             return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    00907
    00908           case 2:
    00909             if (rb == ROAD_X || rb == ROAD_Y) return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    00910             return_cmd_error(STR_ERROR_DRIVE_THROUGH_CORNER);
    00911
    00912           default: // 3 or 4
    00913             return_cmd_error(STR_ERROR_DRIVE_THROUGH_JUNCTION);
    00914         }
    00915       }
    00916
    00917       RoadTypes cur_rts = IsNormalRoadTile(cur_tile) ? GetRoadTypes(cur_tile) : ROADTYPES_NONE;
    00918       uint num_roadbits = 0;
    00919       if (build_over_road) {
    00920         /* There is a road, check if we can build road+tram stop over it. */
    00921         if (HasBit(cur_rts, ROADTYPE_ROAD)) {
    00922           Owner road_owner = GetRoadOwner(cur_tile, ROADTYPE_ROAD);
    00923           if (road_owner == OWNER_TOWN) {
    00924             if (!_settings_game.construction.road_stop_on_town_road) return_cmd_error(STR_ERROR_DRIVE_THROUGH_ON_TOWN_ROAD);
    00925           } else if (!_settings_game.construction.road_stop_on_competitor_road && road_owner != OWNER_NONE) {
    00926             CommandCost ret = CheckOwnership(road_owner);
    00927             if (ret.Failed()) return ret;
    00928           }
    00929           num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_ROAD));
    00930         }
    00931
    00932         /* There is a tram, check if we can build road+tram stop over it. */
    00933         if (HasBit(cur_rts, ROADTYPE_TRAM)) {
    00934           Owner tram_owner = GetRoadOwner(cur_tile, ROADTYPE_TRAM);
    00935           if (!_settings_game.construction.road_stop_on_competitor_road && tram_owner != OWNER_NONE) {
    00936             CommandCost ret = CheckOwnership(tram_owner);
    00937             if (ret.Failed()) return ret;
    00938           }
    00939           num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_TRAM));
    00940         }
    00941
    00942         /* Take into account existing roadbits. */
    00943         rts |= cur_rts;
    00944       } else {
    00945         ret = DoCommand(cur_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00946         if (ret.Failed()) return ret;
    00947         cost.AddCost(ret);
    00948       }
    00949
    00950       uint roadbits_to_build = CountBits(rts) * 2 - num_roadbits;
    00951       cost.AddCost(_price[PR_BUILD_ROAD] * roadbits_to_build);
    00952     }
    00953   }
    00954
    00955   return cost;
    00956 }
    00957
    00965 CommandCost CanExpandRailStation(const BaseStation *st, TileArea &new_ta, Axis axis)
    00966 {
    00967   TileArea cur_ta = st->train_station;
    00968
    00969   /* determine new size of train station region.. */
    00970   int x = min(TileX(cur_ta.tile), TileX(new_ta.tile));
    00971   int y = min(TileY(cur_ta.tile), TileY(new_ta.tile));
    00972   new_ta.w = max(TileX(cur_ta.tile) + cur_ta.w, TileX(new_ta.tile) + new_ta.w) - x;
    00973   new_ta.h = max(TileY(cur_ta.tile) + cur_ta.h, TileY(new_ta.tile) + new_ta.h) - y;
    00974   new_ta.tile = TileXY(x, y);
    00975
    00976   /* make sure the final size is not too big. */
    00977   if (new_ta.w > _settings_game.station.station_spread || new_ta.h > _settings_game.station.station_spread) {
    00978     return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
    00979   }
    00980
    00981   return CommandCost();
    00982 }
    00983
    00984 static inline byte *CreateSingle(byte *layout, int n)
    00985 {
    00986   int i = n;
    00987   do *layout++ = 0; while (--i);
    00988   layout[((n - 1) >> 1) - n] = 2;
    00989   return layout;
    00990 }
    00991
    00992 static inline byte *CreateMulti(byte *layout, int n, byte b)
    00993 {
    00994   int i = n;
    00995   do *layout++ = b; while (--i);
    00996   if (n > 4) {
    00997     layout[0 - n] = 0;
    00998     layout[n - 1 - n] = 0;
    00999   }
    01000   return layout;
    01001 }
    01002
    01010 void GetStationLayout(byte *layout, int numtracks, int plat_len, const StationSpec *statspec)
    01011 {
    01012   if (statspec != NULL && statspec->lengths >= plat_len &&
    01013       statspec->platforms[plat_len - 1] >= numtracks &&
    01014       statspec->layouts[plat_len - 1][numtracks - 1]) {
    01015     /* Custom layout defined, follow it. */
    01016     memcpy(layout, statspec->layouts[plat_len - 1][numtracks - 1],
    01017       plat_len * numtracks);
    01018     return;
    01019   }
    01020
    01021   if (plat_len == 1) {
    01022     CreateSingle(layout, numtracks);
    01023   } else {
    01024     if (numtracks & 1) layout = CreateSingle(layout, plat_len);
    01025     numtracks >>= 1;
    01026
    01027     while (--numtracks >= 0) {
    01028       layout = CreateMulti(layout, plat_len, 4);
    01029       layout = CreateMulti(layout, plat_len, 6);
    01030     }
    01031   }
    01032 }
    01033
    01045 template <class T, StringID error_message>
    01046 CommandCost FindJoiningBaseStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, T **st)
    01047 {
    01048   assert(*st == NULL);
    01049   bool check_surrounding = true;
    01050
    01051   if (_settings_game.station.adjacent_stations) {
    01052     if (existing_station != INVALID_STATION) {
    01053       if (adjacent && existing_station != station_to_join) {
    01054         /* You can't build an adjacent station over the top of one that
    01055          * already exists. */
    01056         return_cmd_error(error_message);
    01057       } else {
    01058         /* Extend the current station, and don't check whether it will
    01059          * be near any other stations. */
    01060         *st = T::GetIfValid(existing_station);
    01061         check_surrounding = (*st == NULL);
    01062       }
    01063     } else {
    01064       /* There's no station here. Don't check the tiles surrounding this
    01065        * one if the company wanted to build an adjacent station. */
    01066       if (adjacent) check_surrounding = false;
    01067     }
    01068   }
    01069
    01070   if (check_surrounding) {
    01071     /* Make sure there are no similar stations around us. */
    01072     CommandCost ret = GetStationAround(ta, existing_station, st);
    01073     if (ret.Failed()) return ret;
    01074   }
    01075
    01076   /* Distant join */
    01077   if (*st == NULL && station_to_join != INVALID_STATION) *st = T::GetIfValid(station_to_join);
    01078
    01079   return CommandCost();
    01080 }
    01081
    01091 static CommandCost FindJoiningStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
    01092 {
    01093   return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_RAILWAY_STATION_FIRST>(existing_station, station_to_join, adjacent, ta, st);
    01094 }
    01095
    01105 CommandCost FindJoiningWaypoint(StationID existing_waypoint, StationID waypoint_to_join, bool adjacent, TileArea ta, Waypoint **wp)
    01106 {
    01107   return FindJoiningBaseStation<Waypoint, STR_ERROR_MUST_REMOVE_RAILWAYPOINT_FIRST>(existing_waypoint, waypoint_to_join, adjacent, ta, wp);
    01108 }
    01109
    01127 CommandCost CmdBuildRailStation(TileIndex tile_org, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01128 {
    01129   /* Unpack parameters */
    01130   RailType rt    = Extract<RailType, 0, 4>(p1);
    01131   Axis axis      = Extract<Axis, 4, 1>(p1);
    01132   byte numtracks = GB(p1,  8, 8);
    01133   byte plat_len  = GB(p1, 16, 8);
    01134   bool adjacent  = HasBit(p1, 24);
    01135
    01136   StationClassID spec_class = Extract<StationClassID, 0, 8>(p2);
    01137   byte spec_index           = GB(p2, 8, 8);
    01138   StationID station_to_join = GB(p2, 16, 16);
    01139
    01140   /* Does the authority allow this? */
    01141   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile_org, flags);
    01142   if (ret.Failed()) return ret;
    01143
    01144   if (!ValParamRailtype(rt)) return CMD_ERROR;
    01145
    01146   /* Check if the given station class is valid */
    01147   if ((uint)spec_class >= StationClass::GetClassCount() || spec_class == STAT_CLASS_WAYP) return CMD_ERROR;
    01148   if (spec_index >= StationClass::Get(spec_class)->GetSpecCount()) return CMD_ERROR;
    01149   if (plat_len == 0 || numtracks == 0) return CMD_ERROR;
    01150
    01151   int w_org, h_org;
    01152   if (axis == AXIS_X) {
    01153     w_org = plat_len;
    01154     h_org = numtracks;
    01155   } else {
    01156     h_org = plat_len;
    01157     w_org = numtracks;
    01158   }
    01159
    01160   bool reuse = (station_to_join != NEW_STATION);
    01161   if (!reuse) station_to_join = INVALID_STATION;
    01162   bool distant_join = (station_to_join != INVALID_STATION);
    01163
    01164   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01165
    01166   if (h_org > _settings_game.station.station_spread || w_org > _settings_game.station.station_spread) return CMD_ERROR;
    01167
    01168   /* these values are those that will be stored in train_tile and station_platforms */
    01169   TileArea new_location(tile_org, w_org, h_org);
    01170
    01171   /* Make sure the area below consists of clear tiles. (OR tiles belonging to a certain rail station) */
    01172   StationID est = INVALID_STATION;
    01173   SmallVector<Train *, 4> affected_vehicles;
    01174   /* Clear the land below the station. */
    01175   CommandCost cost = CheckFlatLandRailStation(new_location, flags, axis, &est, rt, affected_vehicles, spec_class, spec_index, plat_len, numtracks);
    01176   if (cost.Failed()) return cost;
    01177   /* Add construction expenses. */
    01178   cost.AddCost((numtracks * _price[PR_BUILD_STATION_RAIL] + _price[PR_BUILD_STATION_RAIL_LENGTH]) * plat_len);
    01179   cost.AddCost(numtracks * plat_len * RailBuildCost(rt));
    01180
    01181   Station *st = NULL;
    01182   ret = FindJoiningStation(est, station_to_join, adjacent, new_location, &st);
    01183   if (ret.Failed()) return ret;
    01184
    01185   ret = BuildStationPart(&st, flags, reuse, new_location, STATIONNAMING_RAIL);
    01186   if (ret.Failed()) return ret;
    01187
    01188   if (st != NULL && st->train_station.tile != INVALID_TILE) {
    01189     CommandCost ret = CanExpandRailStation(st, new_location, axis);
    01190     if (ret.Failed()) return ret;
    01191   }
    01192
    01193   /* Check if we can allocate a custom stationspec to this station */
    01194   const StationSpec *statspec = StationClass::Get(spec_class)->GetSpec(spec_index);
    01195   int specindex = AllocateSpecToStation(statspec, st, (flags & DC_EXEC) != 0);
    01196   if (specindex == -1) return_cmd_error(STR_ERROR_TOO_MANY_STATION_SPECS);
    01197
    01198   if (statspec != NULL) {
    01199     /* Perform NewStation checks */
    01200
    01201     /* Check if the station size is permitted */
    01202     if (HasBit(statspec->disallowed_platforms, numtracks - 1) || HasBit(statspec->disallowed_lengths, plat_len - 1)) {
    01203       return CMD_ERROR;
    01204     }
    01205
    01206     /* Check if the station is buildable */
    01207     if (HasBit(statspec->callback_mask, CBM_STATION_AVAIL)) {
    01208       uint16 cb_res = GetStationCallback(CBID_STATION_AVAILABILITY, 0, 0, statspec, NULL, INVALID_TILE);
    01209       if (cb_res != CALLBACK_FAILED && !Convert8bitBooleanCallback(statspec->grf_prop.grffile, CBID_STATION_AVAILABILITY, cb_res)) return CMD_ERROR;
    01210     }
    01211   }
    01212
    01213   if (flags & DC_EXEC) {
    01214     TileIndexDiff tile_delta;
    01215     byte *layout_ptr;
    01216     byte numtracks_orig;
    01217     Track track;
    01218
    01219     st->train_station = new_location;
    01220     st->AddFacility(FACIL_TRAIN, new_location.tile);
    01221
    01222     st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TRY);
    01223
    01224     if (statspec != NULL) {
    01225       /* Include this station spec's animation trigger bitmask
    01226        * in the station's cached copy. */
    01227       st->cached_anim_triggers |= statspec->animation.triggers;
    01228     }
    01229
    01230     tile_delta = (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
    01231     track = AxisToTrack(axis);
    01232
    01233     layout_ptr = AllocaM(byte, numtracks * plat_len);
    01234     GetStationLayout(layout_ptr, numtracks, plat_len, statspec);
    01235
    01236     numtracks_orig = numtracks;
    01237
    01238     Company *c = Company::Get(st->owner);
    01239     TileIndex tile_track = tile_org;
    01240     do {
    01241       TileIndex tile = tile_track;
    01242       int w = plat_len;
    01243       do {
    01244         byte layout = *layout_ptr++;
    01245         if (IsRailStationTile(tile) && HasStationReservation(tile)) {
    01246           /* Check for trains having a reservation for this tile. */
    01247           Train *v = GetTrainForReservation(tile, AxisToTrack(GetRailStationAxis(tile)));
    01248           if (v != NULL) {
    01249             FreeTrainTrackReservation(v);
    01250             *affected_vehicles.Append() = v;
    01251             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01252             for (; v->Next() != NULL; v = v->Next()) { }
    01253             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), false);
    01254           }
    01255         }
    01256
    01257         /* Railtype can change when overbuilding. */
    01258         if (IsRailStationTile(tile)) {
    01259           if (!IsStationTileBlocked(tile)) c->infrastructure.rail[GetRailType(tile)]--;
    01260           c->infrastructure.station--;
    01261         }
    01262
    01263         /* Remove animation if overbuilding */
    01264         DeleteAnimatedTile(tile);
    01265         byte old_specindex = HasStationTileRail(tile) ? GetCustomStationSpecIndex(tile) : 0;
    01266         MakeRailStation(tile, st->owner, st->index, axis, layout & ~1, rt);
    01267         /* Free the spec if we overbuild something */
    01268         DeallocateSpecFromStation(st, old_specindex);
    01269
    01270         SetCustomStationSpecIndex(tile, specindex);
    01271         SetStationTileRandomBits(tile, GB(Random(), 0, 4));
    01272         SetAnimationFrame(tile, 0);
    01273
    01274         if (!IsStationTileBlocked(tile)) c->infrastructure.rail[rt]++;
    01275         c->infrastructure.station++;
    01276
    01277         if (statspec != NULL) {
    01278           /* Use a fixed axis for GetPlatformInfo as our platforms / numtracks are always the right way around */
    01279           uint32 platinfo = GetPlatformInfo(AXIS_X, GetStationGfx(tile), plat_len, numtracks_orig, plat_len - w, numtracks_orig - numtracks, false);
    01280
    01281           /* As the station is not yet completely finished, the station does not yet exist. */
    01282           uint16 callback = GetStationCallback(CBID_STATION_TILE_LAYOUT, platinfo, 0, statspec, NULL, tile);
    01283           if (callback != CALLBACK_FAILED) {
    01284             if (callback < 8) {
    01285               SetStationGfx(tile, (callback & ~1) + axis);
    01286             } else {
    01287               ErrorUnknownCallbackResult(statspec->grf_prop.grffile->grfid, CBID_STATION_TILE_LAYOUT, callback);
    01288             }
    01289           }
    01290
    01291           /* Trigger station animation -- after building? */
    01292           TriggerStationAnimation(st, tile, SAT_BUILT);
    01293         }
    01294
    01295         tile += tile_delta;
    01296       } while (--w);
    01297       AddTrackToSignalBuffer(tile_track, track, _current_company);
    01298       YapfNotifyTrackLayoutChange(tile_track, track);
    01299       tile_track += tile_delta ^ TileDiffXY(1, 1); // perpendicular to tile_delta
    01300     } while (--numtracks);
    01301
    01302     for (uint i = 0; i < affected_vehicles.Length(); ++i) {
    01303       /* Restore reservations of trains. */
    01304       Train *v = affected_vehicles[i];
    01305       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01306       TryPathReserve(v, true, true);
    01307       for (; v->Next() != NULL; v = v->Next()) { }
    01308       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01309     }
    01310
    01311     /* Check whether we need to expand the reservation of trains already on the station. */
    01312     TileArea update_reservation_area;
    01313     if (axis == AXIS_X) {
    01314       update_reservation_area = TileArea(tile_org, 1, numtracks_orig);
    01315     } else {
    01316       update_reservation_area = TileArea(tile_org, numtracks_orig, 1);
    01317     }
    01318
    01319     TILE_AREA_LOOP(tile, update_reservation_area) {
    01320       DiagDirection dir = AxisToDiagDir(axis);
    01321       TileIndexDiff tile_offset = TileOffsByDiagDir(dir);
    01322       TileIndex platform_begin = tile - tile_offset * (st->GetPlatformLength(tile, ReverseDiagDir(dir)) - 1);
    01323       TileIndex platform_end   = tile + tile_offset * (st->GetPlatformLength(tile, dir) - 1);
    01324
    01325       /* If there is at least on reservation on the platform, we reserve the whole platform. */
    01326       bool reservation = false;
    01327       for (TileIndex t = platform_begin; !reservation && t <= platform_end; t += tile_offset) {
    01328         reservation = HasStationReservation(t);
    01329       }
    01330
    01331       if (reservation) {
    01332         SetRailStationPlatformReservation(platform_begin, dir, true);
    01333       }
    01334     }
    01335
    01336     st->MarkTilesDirty(false);
    01337     st->UpdateVirtCoord();
    01338     UpdateStationAcceptance(st, false);
    01339     st->RecomputeIndustriesNear();
    01340     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01341     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01342     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01343     DirtyCompanyInfrastructureWindows(st->owner);
    01344   }
    01345
    01346   return cost;
    01347 }
    01348
    01349 static void MakeRailStationAreaSmaller(BaseStation *st)
    01350 {
    01351   TileArea ta = st->train_station;
    01352
    01353 restart:
    01354
    01355   /* too small? */
    01356   if (ta.w != 0 && ta.h != 0) {
    01357     /* check the left side, x = constant, y changes */
    01358     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(0, i));) {
    01359       /* the left side is unused? */
    01360       if (++i == ta.h) {
    01361         ta.tile += TileDiffXY(1, 0);
    01362         ta.w--;
    01363         goto restart;
    01364       }
    01365     }
    01366
    01367     /* check the right side, x = constant, y changes */
    01368     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(ta.w - 1, i));) {
    01369       /* the right side is unused? */
    01370       if (++i == ta.h) {
    01371         ta.w--;
    01372         goto restart;
    01373       }
    01374     }
    01375
    01376     /* check the upper side, y = constant, x changes */
    01377     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, 0));) {
    01378       /* the left side is unused? */
    01379       if (++i == ta.w) {
    01380         ta.tile += TileDiffXY(0, 1);
    01381         ta.h--;
    01382         goto restart;
    01383       }
    01384     }
    01385
    01386     /* check the lower side, y = constant, x changes */
    01387     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, ta.h - 1));) {
    01388       /* the left side is unused? */
    01389       if (++i == ta.w) {
    01390         ta.h--;
    01391         goto restart;
    01392       }
    01393     }
    01394   } else {
    01395     ta.Clear();
    01396   }
    01397
    01398   st->train_station = ta;
    01399 }
    01400
    01411 template <class T>
    01412 CommandCost RemoveFromRailBaseStation(TileArea ta, SmallVector<T *, 4> &affected_stations, DoCommandFlag flags, Money removal_cost, bool keep_rail)
    01413 {
    01414   /* Count of the number of tiles removed */
    01415   int quantity = 0;
    01416   CommandCost total_cost(EXPENSES_CONSTRUCTION);
    01417
    01418   /* Do the action for every tile into the area */
    01419   TILE_AREA_LOOP(tile, ta) {
    01420     /* Make sure the specified tile is a rail station */
    01421     if (!HasStationTileRail(tile)) continue;
    01422
    01423     /* If there is a vehicle on ground, do not allow to remove (flood) the tile */
    01424     CommandCost ret = EnsureNoVehicleOnGround(tile);
    01425     if (ret.Failed()) continue;
    01426
    01427     /* Check ownership of station */
    01428     T *st = T::GetByTile(tile);
    01429     if (st == NULL) continue;
    01430
    01431     if (_current_company != OWNER_WATER) {
    01432       CommandCost ret = CheckOwnership(st->owner);
    01433       if (ret.Failed()) continue;
    01434     }
    01435
    01436     /* If we reached here, the tile is valid so increase the quantity of tiles we will remove */
    01437     quantity++;
    01438
    01439     if (keep_rail || IsStationTileBlocked(tile)) {
    01440       /* Don't refund the 'steel' of the track when we keep the
    01441        *  rail, or when the tile didn't have any rail at all. */
    01442       total_cost.AddCost(-_price[PR_CLEAR_RAIL]);
    01443     }
    01444
    01445     if (flags & DC_EXEC) {
    01446       /* read variables before the station tile is removed */
    01447       uint specindex = GetCustomStationSpecIndex(tile);
    01448       Track track = GetRailStationTrack(tile);
    01449       Owner owner = GetTileOwner(tile);
    01450       RailType rt = GetRailType(tile);
    01451       Train *v = NULL;
    01452
    01453       if (HasStationReservation(tile)) {
    01454         v = GetTrainForReservation(tile, track);
    01455         if (v != NULL) {
    01456           /* Free train reservation. */
    01457           FreeTrainTrackReservation(v);
    01458           if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01459           Vehicle *temp = v;
    01460           for (; temp->Next() != NULL; temp = temp->Next()) { }
    01461           if (IsRailStationTile(temp->tile)) SetRailStationPlatformReservation(temp->tile, TrackdirToExitdir(ReverseTrackdir(temp->GetVehicleTrackdir())), false);
    01462         }
    01463       }
    01464
    01465       bool build_rail = keep_rail && !IsStationTileBlocked(tile);
    01466       if (!build_rail && !IsStationTileBlocked(tile)) Company::Get(owner)->infrastructure.rail[rt]--;
    01467
    01468       DoClearSquare(tile);
    01469       DeleteNewGRFInspectWindow(GSF_STATIONS, tile);
    01470       if (build_rail) MakeRailNormal(tile, owner, TrackToTrackBits(track), rt);
    01471       Company::Get(owner)->infrastructure.station--;
    01472       DirtyCompanyInfrastructureWindows(owner);
    01473
    01474       st->rect.AfterRemoveTile(st, tile);
    01475       AddTrackToSignalBuffer(tile, track, owner);
    01476       YapfNotifyTrackLayoutChange(tile, track);
    01477
    01478       DeallocateSpecFromStation(st, specindex);
    01479
    01480       affected_stations.Include(st);
    01481
    01482       if (v != NULL) {
    01483         /* Restore station reservation. */
    01484         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01485         TryPathReserve(v, true, true);
    01486         for (; v->Next() != NULL; v = v->Next()) { }
    01487         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01488       }
    01489     }
    01490   }
    01491
    01492   if (quantity == 0) return_cmd_error(STR_ERROR_THERE_IS_NO_STATION);
    01493
    01494   for (T **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01495     T *st = *stp;
    01496
    01497     /* now we need to make the "spanned" area of the railway station smaller
    01498      * if we deleted something at the edges.
    01499      * we also need to adjust train_tile. */
    01500     MakeRailStationAreaSmaller(st);
    01501     UpdateStationSignCoord(st);
    01502
    01503     /* if we deleted the whole station, delete the train facility. */
    01504     if (st->train_station.tile == INVALID_TILE) {
    01505       st->facilities &= ~FACIL_TRAIN;
    01506       SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01507       st->UpdateVirtCoord();
    01508       DeleteStationIfEmpty(st);
    01509     }
    01510   }
    01511
    01512   total_cost.AddCost(quantity * removal_cost);
    01513   return total_cost;
    01514 }
    01515
    01527 CommandCost CmdRemoveFromRailStation(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01528 {
    01529   TileIndex end = p1 == 0 ? start : p1;
    01530   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01531
    01532   TileArea ta(start, end);
    01533   SmallVector<Station *, 4> affected_stations;
    01534
    01535   CommandCost ret = RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_STATION_RAIL], HasBit(p2, 0));
    01536   if (ret.Failed()) return ret;
    01537
    01538   /* Do all station specific functions here. */
    01539   for (Station **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01540     Station *st = *stp;
    01541
    01542     if (st->train_station.tile == INVALID_TILE) SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01543     st->MarkTilesDirty(false);
    01544     st->RecomputeIndustriesNear();
    01545   }
    01546
    01547   /* Now apply the rail cost to the number that we deleted */
    01548   return ret;
    01549 }
    01550
    01562 CommandCost CmdRemoveFromRailWaypoint(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01563 {
    01564   TileIndex end = p1 == 0 ? start : p1;
    01565   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01566
    01567   TileArea ta(start, end);
    01568   SmallVector<Waypoint *, 4> affected_stations;
    01569
    01570   return RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_WAYPOINT_RAIL], HasBit(p2, 0));
    01571 }
    01572
    01573
    01581 template <class T>
    01582 CommandCost RemoveRailStation(T *st, DoCommandFlag flags)
    01583 {
    01584   /* Current company owns the station? */
    01585   if (_current_company != OWNER_WATER) {
    01586     CommandCost ret = CheckOwnership(st->owner);
    01587     if (ret.Failed()) return ret;
    01588   }
    01589
    01590   /* determine width and height of platforms */
    01591   TileArea ta = st->train_station;
    01592
    01593   assert(ta.w != 0 && ta.h != 0);
    01594
    01595   CommandCost cost(EXPENSES_CONSTRUCTION);
    01596   /* clear all areas of the station */
    01597   TILE_AREA_LOOP(tile, ta) {
    01598     /* only remove tiles that are actually train station tiles */
    01599     if (!st->TileBelongsToRailStation(tile)) continue;
    01600
    01601     CommandCost ret = EnsureNoVehicleOnGround(tile);
    01602     if (ret.Failed()) return ret;
    01603
    01604     cost.AddCost(_price[PR_CLEAR_STATION_RAIL]);
    01605     if (flags & DC_EXEC) {
    01606       /* read variables before the station tile is removed */
    01607       Track track = GetRailStationTrack(tile);
    01608       Owner owner = GetTileOwner(tile); // _current_company can be OWNER_WATER
    01609       Train *v = NULL;
    01610       if (HasStationReservation(tile)) {
    01611         v = GetTrainForReservation(tile, track);
    01612         if (v != NULL) FreeTrainTrackReservation(v);
    01613       }
    01614       if (!IsStationTileBlocked(tile)) Company::Get(owner)->infrastructure.rail[GetRailType(tile)]--;
    01615       Company::Get(owner)->infrastructure.station--;
    01616       DoClearSquare(tile);
    01617       DeleteNewGRFInspectWindow(GSF_STATIONS, tile);
    01618       AddTrackToSignalBuffer(tile, track, owner);
    01619       YapfNotifyTrackLayoutChange(tile, track);
    01620       if (v != NULL) TryPathReserve(v, true);
    01621     }
    01622   }
    01623
    01624   if (flags & DC_EXEC) {
    01625     st->rect.AfterRemoveRect(st, st->train_station);
    01626
    01627     st->train_station.Clear();
    01628
    01629     st->facilities &= ~FACIL_TRAIN;
    01630
    01631     free(st->speclist);
    01632     st->num_specs = 0;
    01633     st->speclist  = NULL;
    01634     st->cached_anim_triggers = 0;
    01635
    01636     DirtyCompanyInfrastructureWindows(st->owner);
    01637     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01638     st->UpdateVirtCoord();
    01639     DeleteStationIfEmpty(st);
    01640   }
    01641
    01642   return cost;
    01643 }
    01644
    01651 static CommandCost RemoveRailStation(TileIndex tile, DoCommandFlag flags)
    01652 {
    01653   /* if there is flooding, remove platforms tile by tile */
    01654   if (_current_company == OWNER_WATER) {
    01655     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_STATION);
    01656   }
    01657
    01658   Station *st = Station::GetByTile(tile);
    01659   CommandCost cost = RemoveRailStation(st, flags);
    01660
    01661   if (flags & DC_EXEC) st->RecomputeIndustriesNear();
    01662
    01663   return cost;
    01664 }
    01665
    01672 static CommandCost RemoveRailWaypoint(TileIndex tile, DoCommandFlag flags)
    01673 {
    01674   /* if there is flooding, remove waypoints tile by tile */
    01675   if (_current_company == OWNER_WATER) {
    01676     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_WAYPOINT);
    01677   }
    01678
    01679   return RemoveRailStation(Waypoint::GetByTile(tile), flags);
    01680 }
    01681
    01682
    01688 static RoadStop **FindRoadStopSpot(bool truck_station, Station *st)
    01689 {
    01690   RoadStop **primary_stop = (truck_station) ? &st->truck_stops : &st->bus_stops;
    01691
    01692   if (*primary_stop == NULL) {
    01693     /* we have no roadstop of the type yet, so write a "primary stop" */
    01694     return primary_stop;
    01695   } else {
    01696     /* there are stops already, so append to the end of the list */
    01697     RoadStop *stop = *primary_stop;
    01698     while (stop->next != NULL) stop = stop->next;
    01699     return &stop->next;
    01700   }
    01701 }
    01702
    01703 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags);
    01704
    01714 static CommandCost FindJoiningRoadStop(StationID existing_stop, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
    01715 {
    01716   return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_ROAD_STOP_FIRST>(existing_stop, station_to_join, adjacent, ta, st);
    01717 }
    01718
    01734 CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01735 {
    01736   bool type = HasBit(p2, 0);
    01737   bool is_drive_through = HasBit(p2, 1);
    01738   RoadTypes rts = Extract<RoadTypes, 2, 2>(p2);
    01739   StationID station_to_join = GB(p2, 16, 16);
    01740   bool reuse = (station_to_join != NEW_STATION);
    01741   if (!reuse) station_to_join = INVALID_STATION;
    01742   bool distant_join = (station_to_join != INVALID_STATION);
    01743
    01744   uint8 width = (uint8)GB(p1, 0, 8);
    01745   uint8 lenght = (uint8)GB(p1, 8, 8);
    01746
    01747   /* Check if the requested road stop is too big */
    01748   if (width > _settings_game.station.station_spread || lenght > _settings_game.station.station_spread) return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
    01749   /* Check for incorrect width / length. */
    01750   if (width == 0 || lenght == 0) return CMD_ERROR;
    01751   /* Check if the first tile and the last tile are valid */
    01752   if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, lenght - 1) == INVALID_TILE) return CMD_ERROR;
    01753
    01754   TileArea roadstop_area(tile, width, lenght);
    01755
    01756   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01757
    01758   if (!HasExactlyOneBit(rts) || !HasRoadTypesAvail(_current_company, rts)) return CMD_ERROR;
    01759
    01760   /* Trams only have drive through stops */
    01761   if (!is_drive_through && HasBit(rts, ROADTYPE_TRAM)) return CMD_ERROR;
    01762
    01763   DiagDirection ddir = Extract<DiagDirection, 6, 2>(p2);
    01764
    01765   /* Safeguard the parameters. */
    01766   if (!IsValidDiagDirection(ddir)) return CMD_ERROR;
    01767   /* If it is a drive-through stop, check for valid axis. */
    01768   if (is_drive_through && !IsValidAxis((Axis)ddir)) return CMD_ERROR;
    01769
    01770   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
    01771   if (ret.Failed()) return ret;
    01772
    01773   /* Total road stop cost. */
    01774   CommandCost cost(EXPENSES_CONSTRUCTION, roadstop_area.w * roadstop_area.h * _price[type ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
    01775   StationID est = INVALID_STATION;
    01776   ret = CheckFlatLandRoadStop(roadstop_area, flags, is_drive_through ? 5 << ddir : 1 << ddir, is_drive_through, type, DiagDirToAxis(ddir), &est, rts);
    01777   if (ret.Failed()) return ret;
    01778   cost.AddCost(ret);
    01779
    01780   Station *st = NULL;
    01781   ret = FindJoiningRoadStop(est, station_to_join, HasBit(p2, 5), roadstop_area, &st);
    01782   if (ret.Failed()) return ret;
    01783
    01784   /* Check if this number of road stops can be allocated. */
    01785   if (!RoadStop::CanAllocateItem(roadstop_area.w * roadstop_area.h)) return_cmd_error(type ? STR_ERROR_TOO_MANY_TRUCK_STOPS : STR_ERROR_TOO_MANY_BUS_STOPS);
    01786
    01787   ret = BuildStationPart(&st, flags, reuse, roadstop_area, STATIONNAMING_ROAD);
    01788   if (ret.Failed()) return ret;
    01789
    01790   if (flags & DC_EXEC) {
    01791     /* Check every tile in the area. */
    01792     TILE_AREA_LOOP(cur_tile, roadstop_area) {
    01793       RoadTypes cur_rts = GetRoadTypes(cur_tile);
    01794       Owner road_owner = HasBit(cur_rts, ROADTYPE_ROAD) ? GetRoadOwner(cur_tile, ROADTYPE_ROAD) : _current_company;
    01795       Owner tram_owner = HasBit(cur_rts, ROADTYPE_TRAM) ? GetRoadOwner(cur_tile, ROADTYPE_TRAM) : _current_company;
    01796
    01797       if (IsTileType(cur_tile, MP_STATION) && IsRoadStop(cur_tile)) {
    01798         RemoveRoadStop(cur_tile, flags);
    01799       }
    01800
    01801       RoadStop *road_stop = new RoadStop(cur_tile);
    01802       /* Insert into linked list of RoadStops. */
    01803       RoadStop **currstop = FindRoadStopSpot(type, st);
    01804       *currstop = road_stop;
    01805
    01806       if (type) {
    01807         st->truck_station.Add(cur_tile);
    01808       } else {
    01809         st->bus_station.Add(cur_tile);
    01810       }
    01811
    01812       /* Initialize an empty station. */
    01813       st->AddFacility((type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, cur_tile);
    01814
    01815       st->rect.BeforeAddTile(cur_tile, StationRect::ADD_TRY);
    01816
    01817       RoadStopType rs_type = type ? ROADSTOP_TRUCK : ROADSTOP_BUS;
    01818       if (is_drive_through) {
    01819         /* Update company infrastructure counts. If the current tile is a normal
    01820          * road tile, count only the new road bits needed to get a full diagonal road. */
    01821         RoadType rt;
    01822         FOR_EACH_SET_ROADTYPE(rt, cur_rts | rts) {
    01823           Company *c = Company::GetIfValid(rt == ROADTYPE_ROAD ? road_owner : tram_owner);
    01824           if (c != NULL) {
    01825             c->infrastructure.road[rt] += 2 - (IsNormalRoadTile(cur_tile) && HasBit(cur_rts, rt) ? CountBits(GetRoadBits(cur_tile, rt)) : 0);
    01826             DirtyCompanyInfrastructureWindows(c->index);
    01827           }
    01828         }
    01829
    01830         MakeDriveThroughRoadStop(cur_tile, st->owner, road_owner, tram_owner, st->index, rs_type, rts | cur_rts, DiagDirToAxis(ddir));
    01831         road_stop->MakeDriveThrough();
    01832       } else {
    01833         /* Non-drive-through stop never overbuild and always count as two road bits. */
    01834         Company::Get(st->owner)->infrastructure.road[FIND_FIRST_BIT(rts)] += 2;
    01835         MakeRoadStop(cur_tile, st->owner, st->index, rs_type, rts, ddir);
    01836       }
    01837       Company::Get(st->owner)->infrastructure.station++;
    01838       DirtyCompanyInfrastructureWindows(st->owner);
    01839
    01840       MarkTileDirtyByTile(cur_tile);
    01841     }
    01842   }
    01843
    01844   if (st != NULL) {
    01845     st->UpdateVirtCoord();
    01846     UpdateStationAcceptance(st, false);
    01847     st->RecomputeIndustriesNear();
    01848     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01849     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01850     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ROADVEHS);
    01851   }
    01852   return cost;
    01853 }
    01854
    01855
    01856 static Vehicle *ClearRoadStopStatusEnum(Vehicle *v, void *)
    01857 {
    01858   if (v->type == VEH_ROAD) {
    01859     /* Okay... we are a road vehicle on a drive through road stop.
    01860      * But that road stop has just been removed, so we need to make
    01861      * sure we are in a valid state... however, vehicles can also
    01862      * turn on road stop tiles, so only clear the 'road stop' state
    01863      * bits and only when the state was 'in road stop', otherwise
    01864      * we'll end up clearing the turn around bits. */
    01865     RoadVehicle *rv = RoadVehicle::From(v);
    01866     if (HasBit(rv->state, RVS_IN_DT_ROAD_STOP)) rv->state &= RVSB_ROAD_STOP_TRACKDIR_MASK;
    01867   }
    01868
    01869   return NULL;
    01870 }
    01871
    01872
    01879 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags)
    01880 {
    01881   Station *st = Station::GetByTile(tile);
    01882
    01883   if (_current_company != OWNER_WATER) {
    01884     CommandCost ret = CheckOwnership(st->owner);
    01885     if (ret.Failed()) return ret;
    01886   }
    01887
    01888   bool is_truck = IsTruckStop(tile);
    01889
    01890   RoadStop **primary_stop;
    01891   RoadStop *cur_stop;
    01892   if (is_truck) { // truck stop
    01893     primary_stop = &st->truck_stops;
    01894     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_TRUCK);
    01895   } else {
    01896     primary_stop = &st->bus_stops;
    01897     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_BUS);
    01898   }
    01899
    01900   assert(cur_stop != NULL);
    01901
    01902   /* don't do the check for drive-through road stops when company bankrupts */
    01903   if (IsDriveThroughStopTile(tile) && (flags & DC_BANKRUPT)) {
    01904     /* remove the 'going through road stop' status from all vehicles on that tile */
    01905     if (flags & DC_EXEC) FindVehicleOnPos(tile, NULL, &ClearRoadStopStatusEnum);
    01906   } else {
    01907     CommandCost ret = EnsureNoVehicleOnGround(tile);
    01908     if (ret.Failed()) return ret;
    01909   }
    01910
    01911   if (flags & DC_EXEC) {
    01912     if (*primary_stop == cur_stop) {
    01913       /* removed the first stop in the list */
    01914       *primary_stop = cur_stop->next;
    01915       /* removed the only stop? */
    01916       if (*primary_stop == NULL) {
    01917         st->facilities &= (is_truck ? ~FACIL_TRUCK_STOP : ~FACIL_BUS_STOP);
    01918       }
    01919     } else {
    01920       /* tell the predecessor in the list to skip this stop */
    01921       RoadStop *pred = *primary_stop;
    01922       while (pred->next != cur_stop) pred = pred->next;
    01923       pred->next = cur_stop->next;
    01924     }
    01925
    01926     /* Update company infrastructure counts. */
    01927     RoadType rt;
    01928     FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(tile)) {
    01929       Company *c = Company::GetIfValid(GetRoadOwner(tile, rt));
    01930       if (c != NULL) {
    01931         c->infrastructure.road[rt] -= 2;
    01932         DirtyCompanyInfrastructureWindows(c->index);
    01933       }
    01934     }
    01935     Company::Get(st->owner)->infrastructure.station--;
    01936
    01937     if (IsDriveThroughStopTile(tile)) {
    01938       /* Clears the tile for us */
    01939       cur_stop->ClearDriveThrough();
    01940     } else {
    01941       DoClearSquare(tile);
    01942     }
    01943
    01944     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ROADVEHS);
    01945     delete cur_stop;
    01946
    01947     /* Make sure no vehicle is going to the old roadstop */
    01948     RoadVehicle *v;
    01949     FOR_ALL_ROADVEHICLES(v) {
    01950       if (v->First() == v && v->current_order.IsType(OT_GOTO_STATION) &&
    01951           v->dest_tile == tile) {
    01952         v->dest_tile = v->GetOrderStationLocation(st->index);
    01953       }
    01954     }
    01955
    01956     st->rect.AfterRemoveTile(st, tile);
    01957
    01958     st->UpdateVirtCoord();
    01959     st->RecomputeIndustriesNear();
    01960     DeleteStationIfEmpty(st);
    01961
    01962     /* Update the tile area of the truck/bus stop */
    01963     if (is_truck) {
    01964       st->truck_station.Clear();
    01965       for (const RoadStop *rs = st->truck_stops; rs != NULL; rs = rs->next) st->truck_station.Add(rs->xy);
    01966     } else {
    01967       st->bus_station.Clear();
    01968       for (const RoadStop *rs = st->bus_stops; rs != NULL; rs = rs->next) st->bus_station.Add(rs->xy);
    01969     }
    01970   }
    01971
    01972   return CommandCost(EXPENSES_CONSTRUCTION, _price[is_truck ? PR_CLEAR_STATION_TRUCK : PR_CLEAR_STATION_BUS]);
    01973 }
    01974
    01985 CommandCost CmdRemoveRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01986 {
    01987   uint8 width = (uint8)GB(p1, 0, 8);
    01988   uint8 height = (uint8)GB(p1, 8, 8);
    01989
    01990   /* Check for incorrect width / height. */
    01991   if (width == 0 || height == 0) return CMD_ERROR;
    01992   /* Check if the first tile and the last tile are valid */
    01993   if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, height - 1) == INVALID_TILE) return CMD_ERROR;
    01994
    01995   TileArea roadstop_area(tile, width, height);
    01996
    01997   int quantity = 0;
    01998   CommandCost cost(EXPENSES_CONSTRUCTION);
    01999   TILE_AREA_LOOP(cur_tile, roadstop_area) {
    02000     /* Make sure the specified tile is a road stop of the correct type */
    02001     if (!IsTileType(cur_tile, MP_STATION) || !IsRoadStop(cur_tile) || (uint32)GetRoadStopType(cur_tile) != GB(p2, 0, 1)) continue;
    02002
    02003     /* Save the stop info before it is removed */
    02004     bool is_drive_through = IsDriveThroughStopTile(cur_tile);
    02005     RoadTypes rts = GetRoadTypes(cur_tile);
    02006     RoadBits road_bits = IsDriveThroughStopTile(cur_tile) ?
    02007         ((GetRoadStopDir(cur_tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y) :
    02008         DiagDirToRoadBits(GetRoadStopDir(cur_tile));
    02009
    02010     Owner road_owner = GetRoadOwner(cur_tile, ROADTYPE_ROAD);
    02011     Owner tram_owner = GetRoadOwner(cur_tile, ROADTYPE_TRAM);
    02012     CommandCost ret = RemoveRoadStop(cur_tile, flags);
    02013     if (ret.Failed()) return ret;
    02014     cost.AddCost(ret);
    02015
    02016     quantity++;
    02017     /* If the stop was a drive-through stop replace the road */
    02018     if ((flags & DC_EXEC) && is_drive_through) {
    02019       MakeRoadNormal(cur_tile, road_bits, rts, ClosestTownFromTile(cur_tile, UINT_MAX)->index,
    02020           road_owner, tram_owner);
    02021
    02022       /* Update company infrastructure counts. */
    02023       RoadType rt;
    02024       FOR_EACH_SET_ROADTYPE(rt, rts) {
    02025         Company *c = Company::GetIfValid(GetRoadOwner(cur_tile, rt));
    02026         if (c != NULL) {
    02027           c->infrastructure.road[rt] += CountBits(road_bits);
    02028           DirtyCompanyInfrastructureWindows(c->index);
    02029         }
    02030       }
    02031     }
    02032   }
    02033
    02034   if (quantity == 0) return_cmd_error(STR_ERROR_THERE_IS_NO_STATION);
    02035
    02036   return cost;
    02037 }
    02038
    02045 static uint GetMinimalAirportDistanceToTile(TileIterator &it, TileIndex town_tile)
    02046 {
    02047   uint mindist = UINT_MAX;
    02048
    02049   for (TileIndex cur_tile = it; cur_tile != INVALID_TILE; cur_tile = ++it) {
    02050     mindist = min(mindist, DistanceManhattan(town_tile, cur_tile));
    02051   }
    02052
    02053   return mindist;
    02054 }
    02055
    02065 uint8 GetAirportNoiseLevelForTown(const AirportSpec *as, TileIterator &it, TileIndex town_tile)
    02066 {
    02067   /* 0 cannot be accounted, and 1 is the lowest that can be reduced from town.
    02068    * So no need to go any further*/
    02069   if (as->noise_level < 2) return as->noise_level;
    02070
    02071   uint distance = GetMinimalAirportDistanceToTile(it, town_tile);
    02072
    02073   /* The steps for measuring noise reduction are based on the "magical" (and arbitrary) 8 base distance
    02074    * adding the town_council_tolerance 4 times, as a way to graduate, depending of the tolerance.
    02075    * Basically, it says that the less tolerant a town is, the bigger the distance before
    02076    * an actual decrease can be granted */
    02077   uint8 town_tolerance_distance = 8 + (_settings_game.difficulty.town_council_tolerance * 4);
    02078
    02079   /* now, we want to have the distance segmented using the distance judged bareable by town
    02080    * This will give us the coefficient of reduction the distance provides. */
    02081   uint noise_reduction = distance / town_tolerance_distance;
    02082
    02083   /* If the noise reduction equals the airport noise itself, don't give it for free.
    02084    * Otherwise, simply reduce the airport's level. */
    02085   return noise_reduction >= as->noise_level ? 1 : as->noise_level - noise_reduction;
    02086 }
    02087
    02095 Town *AirportGetNearestTown(const AirportSpec *as, const TileIterator &it)
    02096 {
    02097   Town *t, *nearest = NULL;
    02098   uint add = as->size_x + as->size_y - 2; // GetMinimalAirportDistanceToTile can differ from DistanceManhattan by this much
    02099   uint mindist = UINT_MAX - add; // prevent overflow
    02100   FOR_ALL_TOWNS(t) {
    02101     if (DistanceManhattan(t->xy, it) < mindist + add) { // avoid calling GetMinimalAirportDistanceToTile too often
    02102       TileIterator *copy = it.Clone();
    02103       uint dist = GetMinimalAirportDistanceToTile(*copy, t->xy);
    02104       delete copy;
    02105       if (dist < mindist) {
    02106         nearest = t;
    02107         mindist = dist;
    02108       }
    02109     }
    02110   }
    02111
    02112   return nearest;
    02113 }
    02114
    02115
    02117 void UpdateAirportsNoise()
    02118 {
    02119   Town *t;
    02120   const Station *st;
    02121
    02122   FOR_ALL_TOWNS(t) t->noise_reached = 0;
    02123
    02124   FOR_ALL_STATIONS(st) {
    02125     if (st->airport.tile != INVALID_TILE && st->airport.type != AT_OILRIG) {
    02126       const AirportSpec *as = st->airport.GetSpec();
    02127       AirportTileIterator it(st);
    02128       Town *nearest = AirportGetNearestTown(as, it);
    02129       nearest->noise_reached += GetAirportNoiseLevelForTown(as, it, nearest->xy);
    02130     }
    02131   }
    02132 }
    02133
    02147 CommandCost CmdBuildAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02148 {
    02149   StationID station_to_join = GB(p2, 16, 16);
    02150   bool reuse = (station_to_join != NEW_STATION);
    02151   if (!reuse) station_to_join = INVALID_STATION;
    02152   bool distant_join = (station_to_join != INVALID_STATION);
    02153   byte airport_type = GB(p1, 0, 8);
    02154   byte layout = GB(p1, 8, 8);
    02155
    02156   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    02157
    02158   if (airport_type >= NUM_AIRPORTS) return CMD_ERROR;
    02159
    02160   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
    02161   if (ret.Failed()) return ret;
    02162
    02163   /* Check if a valid, buildable airport was chosen for construction */
    02164   const AirportSpec *as = AirportSpec::Get(airport_type);
    02165   if (!as->IsAvailable() || layout >= as->num_table) return CMD_ERROR;
    02166
    02167   Direction rotation = as->rotation[layout];
    02168   int w = as->size_x;
    02169   int h = as->size_y;
    02170   if (rotation == DIR_E || rotation == DIR_W) Swap(w, h);
    02171   TileArea airport_area = TileArea(tile, w, h);
    02172
    02173   if (w > _settings_game.station.station_spread || h > _settings_game.station.station_spread) {
    02174     return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
    02175   }
    02176
    02177   CommandCost cost = CheckFlatLand(airport_area, flags);
    02178   if (cost.Failed()) return cost;
    02179
    02180   /* The noise level is the noise from the airport and reduce it to account for the distance to the town center. */
    02181   AirportTileTableIterator iter(as->table[layout], tile);
    02182   Town *nearest = AirportGetNearestTown(as, iter);
    02183   uint newnoise_level = GetAirportNoiseLevelForTown(as, iter, nearest->xy);
    02184
    02185   /* Check if local auth would allow a new airport */
    02186   StringID authority_refuse_message = STR_NULL;
    02187   Town *authority_refuse_town = NULL;
    02188
    02189   if (_settings_game.economy.station_noise_level) {
    02190     /* do not allow to build a new airport if this raise the town noise over the maximum allowed by town */
    02191     if ((nearest->noise_reached + newnoise_level) > nearest->MaxTownNoise()) {
    02192       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_NOISE;
    02193       authority_refuse_town = nearest;
    02194     }
    02195   } else {
    02196     Town *t = ClosestTownFromTile(tile, UINT_MAX);
    02197     uint num = 0;
    02198     const Station *st;
    02199     FOR_ALL_STATIONS(st) {
    02200       if (st->town == t && (st->facilities & FACIL_AIRPORT) && st->airport.type != AT_OILRIG) num++;
    02201     }
    02202     if (num >= 2) {
    02203       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_AIRPORT;
    02204       authority_refuse_town = t;
    02205     }
    02206   }
    02207
    02208   if (authority_refuse_message != STR_NULL) {
    02209     SetDParam(0, authority_refuse_town->index);
    02210     return_cmd_error(authority_refuse_message);
    02211   }
    02212
    02213   Station *st = NULL;
    02214   ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 0), airport_area, &st);
    02215   if (ret.Failed()) return ret;
    02216
    02217   /* Distant join */
    02218   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    02219
    02220   ret = BuildStationPart(&st, flags, reuse, airport_area, (GetAirport(airport_type)->flags & AirportFTAClass::AIRPLANES) ? STATIONNAMING_AIRPORT : STATIONNAMING_HELIPORT);
    02221   if (ret.Failed()) return ret;
    02222
    02223   if (st != NULL && st->airport.tile != INVALID_TILE) {
    02224     return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_AIRPORT);
    02225   }
    02226
    02227   for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
    02228     cost.AddCost(_price[PR_BUILD_STATION_AIRPORT]);
    02229   }
    02230
    02231   if (flags & DC_EXEC) {
    02232     /* Always add the noise, so there will be no need to recalculate when option toggles */
    02233     nearest->noise_reached += newnoise_level;
    02234
    02235     st->AddFacility(FACIL_AIRPORT, tile);
    02236     st->airport.type = airport_type;
    02237     st->airport.layout = layout;
    02238     st->airport.flags = 0;
    02239     st->airport.rotation = rotation;
    02240
    02241     st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TRY);
    02242
    02243     for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
    02244       MakeAirport(iter, st->owner, st->index, iter.GetStationGfx(), WATER_CLASS_INVALID);
    02245       SetStationTileRandomBits(iter, GB(Random(), 0, 4));
    02246       st->airport.Add(iter);
    02247
    02248       if (AirportTileSpec::Get(GetTranslatedAirportTileID(iter.GetStationGfx()))->animation.status != ANIM_STATUS_NO_ANIMATION) AddAnimatedTile(iter);
    02249     }
    02250
    02251     /* Only call the animation trigger after all tiles have been built */
    02252     for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
    02253       AirportTileAnimationTrigger(st, iter, AAT_BUILT);
    02254     }
    02255
    02256     UpdateAirplanesOnNewStation(st);
    02257
    02258     Company::Get(st->owner)->infrastructure.airport++;
    02259     DirtyCompanyInfrastructureWindows(st->owner);
    02260
    02261     st->UpdateVirtCoord();
    02262     UpdateStationAcceptance(st, false);
    02263     st->RecomputeIndustriesNear();
    02264     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02265     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02266     InvalidateWindowData(WC_STATION_VIEW, st->index);
    02267
    02268     if (_settings_game.economy.station_noise_level) {
    02269       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02270     }
    02271   }
    02272
    02273   return cost;
    02274 }
    02275
    02282 static CommandCost RemoveAirport(TileIndex tile, DoCommandFlag flags)
    02283 {
    02284   Station *st = Station::GetByTile(tile);
    02285
    02286   if (_current_company != OWNER_WATER) {
    02287     CommandCost ret = CheckOwnership(st->owner);
    02288     if (ret.Failed()) return ret;
    02289   }
    02290
    02291   tile = st->airport.tile;
    02292
    02293   CommandCost cost(EXPENSES_CONSTRUCTION);
    02294
    02295   const Aircraft *a;
    02296   FOR_ALL_AIRCRAFT(a) {
    02297     if (!a->IsNormalAircraft()) continue;
    02298     if (a->targetairport == st->index && a->state != FLYING) return CMD_ERROR;
    02299   }
    02300
    02301   if (flags & DC_EXEC) {
    02302     const AirportSpec *as = st->airport.GetSpec();
    02303     /* The noise level is the noise from the airport and reduce it to account for the distance to the town center.
    02304      * And as for construction, always remove it, even if the setting is not set, in order to avoid the
    02305      * need of recalculation */
    02306     AirportTileIterator it(st);
    02307     Town *nearest = AirportGetNearestTown(as, it);
    02308     nearest->noise_reached -= GetAirportNoiseLevelForTown(as, it, nearest->xy);
    02309   }
    02310
    02311   TILE_AREA_LOOP(tile_cur, st->airport) {
    02312     if (!st->TileBelongsToAirport(tile_cur)) continue;
    02313
    02314     CommandCost ret = EnsureNoVehicleOnGround(tile_cur);
    02315     if (ret.Failed()) return ret;
    02316
    02317     cost.AddCost(_price[PR_CLEAR_STATION_AIRPORT]);
    02318
    02319     if (flags & DC_EXEC) {
    02320       if (IsHangarTile(tile_cur)) OrderBackup::Reset(tile_cur, false);
    02321       DeleteAnimatedTile(tile_cur);
    02322       DoClearSquare(tile_cur);
    02323       DeleteNewGRFInspectWindow(GSF_AIRPORTTILES, tile_cur);
    02324     }
    02325   }
    02326
    02327   if (flags & DC_EXEC) {
    02328     /* Clear the persistent storage. */
    02329     delete st->airport.psa;
    02330
    02331     for (uint i = 0; i < st->airport.GetNumHangars(); ++i) {
    02332       DeleteWindowById(
    02333         WC_VEHICLE_DEPOT, st->airport.GetHangarTile(i)
    02334       );
    02335     }
    02336
    02337     st->rect.AfterRemoveRect(st, st->airport);
    02338
    02339     st->airport.Clear();
    02340     st->facilities &= ~FACIL_AIRPORT;
    02341
    02342     InvalidateWindowData(WC_STATION_VIEW, st->index);
    02343
    02344     if (_settings_game.economy.station_noise_level) {
    02345       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02346     }
    02347
    02348     Company::Get(st->owner)->infrastructure.airport--;
    02349     DirtyCompanyInfrastructureWindows(st->owner);
    02350
    02351     st->UpdateVirtCoord();
    02352     st->RecomputeIndustriesNear();
    02353     DeleteStationIfEmpty(st);
    02354     DeleteNewGRFInspectWindow(GSF_AIRPORTS, st->index);
    02355   }
    02356
    02357   return cost;
    02358 }
    02359
    02369 CommandCost CmdOpenCloseAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02370 {
    02371   if (!Station::IsValidID(p1)) return CMD_ERROR;
    02372   Station *st = Station::Get(p1);
    02373
    02374   if (!(st->facilities & FACIL_AIRPORT) || st->owner == OWNER_NONE) return CMD_ERROR;
    02375
    02376   CommandCost ret = CheckOwnership(st->owner);
    02377   if (ret.Failed()) return ret;
    02378
    02379   if (flags & DC_EXEC) {
    02380     st->airport.flags ^= AIRPORT_CLOSED_block;
    02381     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_CLOSE_AIRPORT);
    02382   }
    02383   return CommandCost();
    02384 }
    02385
    02392 bool HasStationInUse(StationID station, bool include_company, CompanyID company)
    02393 {
    02394   const Vehicle *v;
    02395   FOR_ALL_VEHICLES(v) {
    02396     if ((v->owner == company) == include_company) {
    02397       const Order *order;
    02398       FOR_VEHICLE_ORDERS(v, order) {
    02399         if ((order->IsType(OT_GOTO_STATION) || order->IsType(OT_GOTO_WAYPOINT)) && order->GetDestination() == station) {
    02400           return true;
    02401         }
    02402       }
    02403     }
    02404   }
    02405   return false;
    02406 }
    02407
    02408 static const TileIndexDiffC _dock_tileoffs_chkaround[] = {
    02409   {-1,  0},
    02410   { 0,  0},
    02411   { 0,  0},
    02412   { 0, -1}
    02413 };
    02414 static const byte _dock_w_chk[4] = { 2, 1, 2, 1 };
    02415 static const byte _dock_h_chk[4] = { 1, 2, 1, 2 };
    02416
    02426 CommandCost CmdBuildDock(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02427 {
    02428   StationID station_to_join = GB(p2, 16, 16);
    02429   bool reuse = (station_to_join != NEW_STATION);
    02430   if (!reuse) station_to_join = INVALID_STATION;
    02431   bool distant_join = (station_to_join != INVALID_STATION);
    02432
    02433   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    02434
    02435   DiagDirection direction = GetInclinedSlopeDirection(GetTileSlope(tile));
    02436   if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02437   direction = ReverseDiagDir(direction);
    02438
    02439   /* Docks cannot be placed on rapids */
    02440   if (HasTileWaterGround(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02441
    02442   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
    02443   if (ret.Failed()) return ret;
    02444
    02445   if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02446
    02447   ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    02448   if (ret.Failed()) return ret;
    02449
    02450   TileIndex tile_cur = tile + TileOffsByDiagDir(direction);
    02451
    02452   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur) != SLOPE_FLAT) {
    02453     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02454   }
    02455
    02456   if (MayHaveBridgeAbove(tile_cur) && IsBridgeAbove(tile_cur)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02457
    02458   /* Get the water class of the water tile before it is cleared.*/
    02459   WaterClass wc = GetWaterClass(tile_cur);
    02460
    02461   ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    02462   if (ret.Failed()) return ret;
    02463
    02464   tile_cur += TileOffsByDiagDir(direction);
    02465   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur) != SLOPE_FLAT) {
    02466     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02467   }
    02468
    02469   TileArea dock_area = TileArea(tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02470       _dock_w_chk[direction], _dock_h_chk[direction]);
    02471
    02472   /* middle */
    02473   Station *st = NULL;
    02474   ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p1, 0), dock_area, &st);
    02475   if (ret.Failed()) return ret;
    02476
    02477   /* Distant join */
    02478   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    02479
    02480   ret = BuildStationPart(&st, flags, reuse, dock_area, STATIONNAMING_DOCK);
    02481   if (ret.Failed()) return ret;
    02482
    02483   if (st != NULL && st->dock_tile != INVALID_TILE) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_DOCK);
    02484
    02485   if (flags & DC_EXEC) {
    02486     st->dock_tile = tile;
    02487     st->AddFacility(FACIL_DOCK, tile);
    02488
    02489     st->rect.BeforeAddRect(dock_area.tile, dock_area.w, dock_area.h, StationRect::ADD_TRY);
    02490
    02491     /* If the water part of the dock is on a canal, update infrastructure counts.
    02492      * This is needed as we've unconditionally cleared that tile before. */
    02493     if (wc == WATER_CLASS_CANAL) {
    02494       Company::Get(st->owner)->infrastructure.water++;
    02495     }
    02496     Company::Get(st->owner)->infrastructure.station += 2;
    02497     DirtyCompanyInfrastructureWindows(st->owner);
    02498
    02499     MakeDock(tile, st->owner, st->index, direction, wc);
    02500
    02501     st->UpdateVirtCoord();
    02502     UpdateStationAcceptance(st, false);
    02503     st->RecomputeIndustriesNear();
    02504     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02505     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02506     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_SHIPS);
    02507   }
    02508
    02509   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_STATION_DOCK]);
    02510 }
    02511
    02518 static CommandCost RemoveDock(TileIndex tile, DoCommandFlag flags)
    02519 {
    02520   Station *st = Station::GetByTile(tile);
    02521   CommandCost ret = CheckOwnership(st->owner);
    02522   if (ret.Failed()) return ret;
    02523
    02524   TileIndex docking_location = TILE_ADD(st->dock_tile, ToTileIndexDiff(GetDockOffset(st->dock_tile)));
    02525
    02526   TileIndex tile1 = st->dock_tile;
    02527   TileIndex tile2 = tile1 + TileOffsByDiagDir(GetDockDirection(tile1));
    02528
    02529   ret = EnsureNoVehicleOnGround(tile1);
    02530   if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile2);
    02531   if (ret.Failed()) return ret;
    02532
    02533   if (flags & DC_EXEC) {
    02534     DoClearSquare(tile1);
    02535     MarkTileDirtyByTile(tile1);
    02536     MakeWaterKeepingClass(tile2, st->owner);
    02537
    02538     st->rect.AfterRemoveTile(st, tile1);
    02539     st->rect.AfterRemoveTile(st, tile2);
    02540
    02541     st->dock_tile = INVALID_TILE;
    02542     st->facilities &= ~FACIL_DOCK;
    02543
    02544     Company::Get(st->owner)->infrastructure.station -= 2;
    02545     DirtyCompanyInfrastructureWindows(st->owner);
    02546
    02547     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_SHIPS);
    02548     st->UpdateVirtCoord();
    02549     st->RecomputeIndustriesNear();
    02550     DeleteStationIfEmpty(st);
    02551
    02552     /* All ships that were going to our station, can't go to it anymore.
    02553      * Just clear the order, then automatically the next appropriate order
    02554      * will be selected and in case of no appropriate order it will just
    02555      * wander around the world. */
    02556     Ship *s;
    02557     FOR_ALL_SHIPS(s) {
    02558       if (s->current_order.IsType(OT_LOADING) && s->tile == docking_location) {
    02559         s->LeaveStation();
    02560       }
    02561
    02562       if (s->dest_tile == docking_location) {
    02563         s->dest_tile = 0;
    02564         s->current_order.Free();
    02565       }
    02566     }
    02567   }
    02568
    02569   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_STATION_DOCK]);
    02570 }
    02571
    02572 #include "table/station_land.h"
    02573
    02574 const DrawTileSprites *GetStationTileLayout(StationType st, byte gfx)
    02575 {
    02576   return &_station_display_datas[st][gfx];
    02577 }
    02578
    02588 bool SplitGroundSpriteForOverlay(const TileInfo *ti, SpriteID *ground, RailTrackOffset *overlay_offset)
    02589 {
    02590   bool snow_desert;
    02591   switch (*ground) {
    02592     case SPR_RAIL_TRACK_X:
    02593       snow_desert = false;
    02594       *overlay_offset = RTO_X;
    02595       break;
    02596
    02597     case SPR_RAIL_TRACK_Y:
    02598       snow_desert = false;
    02599       *overlay_offset = RTO_Y;
    02600       break;
    02601
    02602     case SPR_RAIL_TRACK_X_SNOW:
    02603       snow_desert = true;
    02604       *overlay_offset = RTO_X;
    02605       break;
    02606
    02607     case SPR_RAIL_TRACK_Y_SNOW:
    02608       snow_desert = true;
    02609       *overlay_offset = RTO_Y;
    02610       break;
    02611
    02612     default:
    02613       return false;
    02614   }
    02615
    02616   if (ti != NULL) {
    02617     /* Decide snow/desert from tile */
    02618     switch (_settings_game.game_creation.landscape) {
    02619       case LT_ARCTIC:
    02620         snow_desert = (uint)ti->z > GetSnowLine() * TILE_HEIGHT;
    02621         break;
    02622
    02623       case LT_TROPIC:
    02624         snow_desert = GetTropicZone(ti->tile) == TROPICZONE_DESERT;
    02625         break;
    02626
    02627       default:
    02628         break;
    02629     }
    02630   }
    02631
    02632   *ground = snow_desert ? SPR_FLAT_SNOW_DESERT_TILE : SPR_FLAT_GRASS_TILE;
    02633   return true;
    02634 }
    02635
    02636 static void DrawTile_Station(TileInfo *ti)
    02637 {
    02638   const NewGRFSpriteLayout *layout = NULL;
    02639   DrawTileSprites tmp_rail_layout;
    02640   const DrawTileSprites *t = NULL;
    02641   RoadTypes roadtypes;
    02642   int32 total_offset;
    02643   const RailtypeInfo *rti = NULL;
    02644   uint32 relocation = 0;
    02645   uint32 ground_relocation = 0;
    02646   BaseStation *st = NULL;
    02647   const StationSpec *statspec = NULL;
    02648   uint tile_layout = 0;
    02649
    02650   if (HasStationRail(ti->tile)) {
    02651     rti = GetRailTypeInfo(GetRailType(ti->tile));
    02652     roadtypes = ROADTYPES_NONE;
    02653     total_offset = rti->GetRailtypeSpriteOffset();
    02654
    02655     if (IsCustomStationSpecIndex(ti->tile)) {
    02656       /* look for customization */
    02657       st = BaseStation::GetByTile(ti->tile);
    02658       statspec = st->speclist[GetCustomStationSpecIndex(ti->tile)].spec;
    02659
    02660       if (statspec != NULL) {
    02661         tile_layout = GetStationGfx(ti->tile);
    02662
    02663         if (HasBit(statspec->callback_mask, CBM_STATION_SPRITE_LAYOUT)) {
    02664           uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0, 0, statspec, st, ti->tile);
    02665           if (callback != CALLBACK_FAILED) tile_layout = (callback & ~1) + GetRailStationAxis(ti->tile);
    02666         }
    02667
    02668         /* Ensure the chosen tile layout is valid for this custom station */
    02669         if (statspec->renderdata != NULL) {
    02670           layout = &statspec->renderdata[tile_layout < statspec->tiles ? tile_layout : (uint)GetRailStationAxis(ti->tile)];
    02671           if (!layout->NeedsPreprocessing()) {
    02672             t = layout;
    02673             layout = NULL;
    02674           }
    02675         }
    02676       }
    02677     }
    02678   } else {
    02679     roadtypes = IsRoadStop(ti->tile) ? GetRoadTypes(ti->tile) : ROADTYPES_NONE;
    02680     total_offset = 0;
    02681   }
    02682
    02683   StationGfx gfx = GetStationGfx(ti->tile);
    02684   if (IsAirport(ti->tile)) {
    02685     gfx = GetAirportGfx(ti->tile);
    02686     if (gfx >= NEW_AIRPORTTILE_OFFSET) {
    02687       const AirportTileSpec *ats = AirportTileSpec::Get(gfx);
    02688       if (ats->grf_prop.spritegroup[0] != NULL && DrawNewAirportTile(ti, Station::GetByTile(ti->tile), gfx, ats)) {
    02689         return;
    02690       }
    02691       /* No sprite group (or no valid one) found, meaning no graphics associated.
    02692        * Use the substitute one instead */
    02693       assert(ats->grf_prop.subst_id != INVALID_AIRPORTTILE);
    02694       gfx = ats->grf_prop.subst_id;
    02695     }
    02696     switch (gfx) {
    02697       case APT_RADAR_GRASS_FENCE_SW:
    02698         t = &_station_display_datas_airport_radar_grass_fence_sw[GetAnimationFrame(ti->tile)];
    02699         break;
    02700       case APT_GRASS_FENCE_NE_FLAG:
    02701         t = &_station_display_datas_airport_flag_grass_fence_ne[GetAnimationFrame(ti->tile)];
    02702         break;
    02703       case APT_RADAR_FENCE_SW:
    02704         t = &_station_display_datas_airport_radar_fence_sw[GetAnimationFrame(ti->tile)];
    02705         break;
    02706       case APT_RADAR_FENCE_NE:
    02707         t = &_station_display_datas_airport_radar_fence_ne[GetAnimationFrame(ti->tile)];
    02708         break;
    02709       case APT_GRASS_FENCE_NE_FLAG_2:
    02710         t = &_station_display_datas_airport_flag_grass_fence_ne_2[GetAnimationFrame(ti->tile)];
    02711         break;
    02712     }
    02713   }
    02714
    02715   Owner owner = GetTileOwner(ti->tile);
    02716
    02717   PaletteID palette;
    02718   if (Company::IsValidID(owner)) {
    02719     palette = COMPANY_SPRITE_COLOUR(owner);
    02720   } else {
    02721     /* Some stations are not owner by a company, namely oil rigs */
    02722     palette = PALETTE_TO_GREY;
    02723   }
    02724
    02725   if (layout == NULL && (t == NULL || t->seq == NULL)) t = GetStationTileLayout(GetStationType(ti->tile), gfx);
    02726
    02727   /* don't show foundation for docks */
    02728   if (ti->tileh != SLOPE_FLAT && !IsDock(ti->tile)) {
    02729     if (statspec != NULL && HasBit(statspec->flags, SSF_CUSTOM_FOUNDATIONS)) {
    02730       /* Station has custom foundations.
    02731        * Check whether the foundation continues beyond the tile's upper sides. */
    02732       uint edge_info = 0;
    02733       int z;
    02734       Slope slope = GetFoundationPixelSlope(ti->tile, &z);
    02735       if (!HasFoundationNW(ti->tile, slope, z)) SetBit(edge_info, 0);
    02736       if (!HasFoundationNE(ti->tile, slope, z)) SetBit(edge_info, 1);
    02737       SpriteID image = GetCustomStationFoundationRelocation(statspec, st, ti->tile, tile_layout, edge_info);
    02738       if (image == 0) goto draw_default_foundation;
    02739
    02740       if (HasBit(statspec->flags, SSF_EXTENDED_FOUNDATIONS)) {
    02741         /* Station provides extended foundations. */
    02742
    02743         static const uint8 foundation_parts[] = {
    02744           0, 0, 0, 0, // Invalid,  Invalid,   Invalid,   SLOPE_SW
    02745           0, 1, 2, 3, // Invalid,  SLOPE_EW,  SLOPE_SE,  SLOPE_WSE
    02746           0, 4, 5, 6, // Invalid,  SLOPE_NW,  SLOPE_NS,  SLOPE_NWS
    02747           7, 8, 9     // SLOPE_NE, SLOPE_ENW, SLOPE_SEN
    02748         };
    02749
    02750         AddSortableSpriteToDraw(image + foundation_parts[ti->tileh], PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02751       } else {
    02752         /* Draw simple foundations, built up from 8 possible foundation sprites. */
    02753
    02754         /* Each set bit represents one of the eight composite sprites to be drawn.
    02755          * 'Invalid' entries will not drawn but are included for completeness. */
    02756         static const uint8 composite_foundation_parts[] = {
    02757           /* Invalid  (00000000), Invalid   (11010001), Invalid   (11100100), SLOPE_SW  (11100000) */
    02758              0x00,                0xD1,                 0xE4,                 0xE0,
    02759           /* Invalid  (11001010), SLOPE_EW  (11001001), SLOPE_SE  (11000100), SLOPE_WSE (11000000) */
    02760              0xCA,                0xC9,                 0xC4,                 0xC0,
    02761           /* Invalid  (11010010), SLOPE_NW  (10010001), SLOPE_NS  (11100100), SLOPE_NWS (10100000) */
    02762              0xD2,                0x91,                 0xE4,                 0xA0,
    02763           /* SLOPE_NE (01001010), SLOPE_ENW (00001001), SLOPE_SEN (01000100) */
    02764              0x4A,                0x09,                 0x44
    02765         };
    02766
    02767         uint8 parts = composite_foundation_parts[ti->tileh];
    02768
    02769         /* If foundations continue beyond the tile's upper sides then
    02770          * mask out the last two pieces. */
    02771         if (HasBit(edge_info, 0)) ClrBit(parts, 6);
    02772         if (HasBit(edge_info, 1)) ClrBit(parts, 7);
    02773
    02774         if (parts == 0) {
    02775           /* We always have to draw at least one sprite to make sure there is a boundingbox and a sprite with the
    02776            * correct offset for the childsprites.
    02777            * So, draw the (completely empty) sprite of the default foundations. */
    02778           goto draw_default_foundation;
    02779         }
    02780
    02781         StartSpriteCombine();
    02782         for (int i = 0; i < 8; i++) {
    02783           if (HasBit(parts, i)) {
    02784             AddSortableSpriteToDraw(image + i, PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02785           }
    02786         }
    02787         EndSpriteCombine();
    02788       }
    02789
    02790       OffsetGroundSprite(31, 1);
    02791       ti->z += ApplyPixelFoundationToSlope(FOUNDATION_LEVELED, &ti->tileh);
    02792     } else {
    02793 draw_default_foundation:
    02794       DrawFoundation(ti, FOUNDATION_LEVELED);
    02795     }
    02796   }
    02797
    02798   if (IsBuoy(ti->tile)) {
    02799     DrawWaterClassGround(ti);
    02800     SpriteID sprite = GetCanalSprite(CF_BUOY, ti->tile);
    02801     if (sprite != 0) total_offset = sprite - SPR_IMG_BUOY;
    02802   } else if (IsDock(ti->tile) || (IsOilRig(ti->tile) && IsTileOnWater(ti->tile))) {
    02803     if (ti->tileh == SLOPE_FLAT) {
    02804       DrawWaterClassGround(ti);
    02805     } else {
    02806       assert(IsDock(ti->tile));
    02807       TileIndex water_tile = ti->tile + TileOffsByDiagDir(GetDockDirection(ti->tile));
    02808       WaterClass wc = GetWaterClass(water_tile);
    02809       if (wc == WATER_CLASS_SEA) {
    02810         DrawShoreTile(ti->tileh);
    02811       } else {
    02812         DrawClearLandTile(ti, 3);
    02813       }
    02814     }
    02815   } else {
    02816     if (layout != NULL) {
    02817       /* Sprite layout which needs preprocessing */
    02818       bool separate_ground = HasBit(statspec->flags, SSF_SEPARATE_GROUND);
    02819       uint32 var10_values = layout->PrepareLayout(total_offset, rti->fallback_railtype, 0, 0, separate_ground);
    02820       uint8 var10;
    02821       FOR_EACH_SET_BIT(var10, var10_values) {
    02822         uint32 var10_relocation = GetCustomStationRelocation(statspec, st, ti->tile, var10);
    02823         layout->ProcessRegisters(var10, var10_relocation, separate_ground);
    02824       }
    02825       tmp_rail_layout.seq = layout->GetLayout(&tmp_rail_layout.ground);
    02826       t = &tmp_rail_layout;
    02827       total_offset = 0;
    02828     } else if (statspec != NULL) {
    02829       /* Simple sprite layout */
    02830       ground_relocation = relocation = GetCustomStationRelocation(statspec, st, ti->tile, 0);
    02831       if (HasBit(statspec->flags, SSF_SEPARATE_GROUND)) {
    02832         ground_relocation = GetCustomStationRelocation(statspec, st, ti->tile, 1);
    02833       }
    02834       ground_relocation += rti->fallback_railtype;
    02835     }
    02836
    02837     SpriteID image = t->ground.sprite;
    02838     PaletteID pal  = t->ground.pal;
    02839     RailTrackOffset overlay_offset;
    02840     if (rti != NULL && rti->UsesOverlay() && SplitGroundSpriteForOverlay(ti, &image, &overlay_offset)) {
    02841       SpriteID ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND);
    02842       DrawGroundSprite(image, PAL_NONE);
    02843       DrawGroundSprite(ground + overlay_offset, PAL_NONE);
    02844
    02845       if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationReservation(ti->tile)) {
    02846         SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
    02847         DrawGroundSprite(overlay + overlay_offset, PALETTE_CRASH);
    02848       }
    02849     } else {
    02850       image += HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? ground_relocation : total_offset;
    02851       if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += ground_relocation;
    02852       DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, palette));
    02853
    02854       /* PBS debugging, draw reserved tracks darker */
    02855       if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationRail(ti->tile) && HasStationReservation(ti->tile)) {
    02856         const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
    02857         DrawGroundSprite(GetRailStationAxis(ti->tile) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
    02858       }
    02859     }
    02860   }
    02861
    02862   if (HasStationRail(ti->tile) && HasCatenaryDrawn(GetRailType(ti->tile))) DrawCatenary(ti);
    02863
    02864   if (HasBit(roadtypes, ROADTYPE_TRAM)) {
    02865     Axis axis = GetRoadStopDir(ti->tile) == DIAGDIR_NE ? AXIS_X : AXIS_Y;
    02866     DrawGroundSprite((HasBit(roadtypes, ROADTYPE_ROAD) ? SPR_TRAMWAY_OVERLAY : SPR_TRAMWAY_TRAM) + (axis ^ 1), PAL_NONE);
    02867     DrawTramCatenary(ti, axis == AXIS_X ? ROAD_X : ROAD_Y);
    02868   }
    02869
    02870   if (IsRailWaypoint(ti->tile)) {
    02871     /* Don't offset the waypoint graphics; they're always the same. */
    02872     total_offset = 0;
    02873   }
    02874
    02875   DrawRailTileSeq(ti, t, TO_BUILDINGS, total_offset, relocation, palette);
    02876 }
    02877
    02878 void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, RoadType roadtype, int image)
    02879 {
    02880   int32 total_offset = 0;
    02881   PaletteID pal = COMPANY_SPRITE_COLOUR(_local_company);
    02882   const DrawTileSprites *t = GetStationTileLayout(st, image);
    02883   const RailtypeInfo *rti = NULL;
    02884
    02885   if (railtype != INVALID_RAILTYPE) {
    02886     rti = GetRailTypeInfo(railtype);
    02887     total_offset = rti->GetRailtypeSpriteOffset();
    02888   }
    02889
    02890   SpriteID img = t->ground.sprite;
    02891   RailTrackOffset overlay_offset;
    02892   if (rti != NULL && rti->UsesOverlay() && SplitGroundSpriteForOverlay(NULL, &img, &overlay_offset)) {
    02893     SpriteID ground = GetCustomRailSprite(rti, INVALID_TILE, RTSG_GROUND);
    02894     DrawSprite(img, PAL_NONE, x, y);
    02895     DrawSprite(ground + overlay_offset, PAL_NONE, x, y);
    02896   } else {
    02897     DrawSprite(img + total_offset, HasBit(img, PALETTE_MODIFIER_COLOUR) ? pal : PAL_NONE, x, y);
    02898   }
    02899
    02900   if (roadtype == ROADTYPE_TRAM) {
    02901     DrawSprite(SPR_TRAMWAY_TRAM + (t->ground.sprite == SPR_ROAD_PAVED_STRAIGHT_X ? 1 : 0), PAL_NONE, x, y);
    02902   }
    02903
    02904   /* Default waypoint has no railtype specific sprites */
    02905   DrawRailTileSeqInGUI(x, y, t, st == STATION_WAYPOINT ? 0 : total_offset, 0, pal);
    02906 }
    02907
    02908 static int GetSlopePixelZ_Station(TileIndex tile, uint x, uint y)
    02909 {
    02910   return GetTileMaxPixelZ(tile);
    02911 }
    02912
    02913 static Foundation GetFoundation_Station(TileIndex tile, Slope tileh)
    02914 {
    02915   return FlatteningFoundation(tileh);
    02916 }
    02917
    02918 static void GetTileDesc_Station(TileIndex tile, TileDesc *td)
    02919 {
    02920   td->owner[0] = GetTileOwner(tile);
    02921   if (IsDriveThroughStopTile(tile)) {
    02922     Owner road_owner = INVALID_OWNER;
    02923     Owner tram_owner = INVALID_OWNER;
    02924     RoadTypes rts = GetRoadTypes(tile);
    02925     if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    02926     if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    02927
    02928     /* Is there a mix of owners? */
    02929     if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
    02930         (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
    02931       uint i = 1;
    02932       if (road_owner != INVALID_OWNER) {
    02933         td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
    02934         td->owner[i] = road_owner;
    02935         i++;
    02936       }
    02937       if (tram_owner != INVALID_OWNER) {
    02938         td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
    02939         td->owner[i] = tram_owner;
    02940       }
    02941     }
    02942   }
    02943   td->build_date = BaseStation::GetByTile(tile)->build_date;
    02944
    02945   if (HasStationTileRail(tile)) {
    02946     const StationSpec *spec = GetStationSpec(tile);
    02947
    02948     if (spec != NULL) {
    02949       td->station_class = StationClass::Get(spec->cls_id)->name;
    02950       td->station_name  = spec->name;
    02951
    02952       if (spec->grf_prop.grffile != NULL) {
    02953         const GRFConfig *gc = GetGRFConfig(spec->grf_prop.grffile->grfid);
    02954         td->grf = gc->GetName();
    02955       }
    02956     }
    02957
    02958     const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
    02959     td->rail_speed = rti->max_speed;
    02960   }
    02961
    02962   if (IsAirport(tile)) {
    02963     const AirportSpec *as = Station::GetByTile(tile)->airport.GetSpec();
    02964     td->airport_class = AirportClass::Get(as->cls_id)->name;
    02965     td->airport_name = as->name;
    02966
    02967     const AirportTileSpec *ats = AirportTileSpec::GetByTile(tile);
    02968     td->airport_tile_name = ats->name;
    02969
    02970     if (as->grf_prop.grffile != NULL) {
    02971       const GRFConfig *gc = GetGRFConfig(as->grf_prop.grffile->grfid);
    02972       td->grf = gc->GetName();
    02973     } else if (ats->grf_prop.grffile != NULL) {
    02974       const GRFConfig *gc = GetGRFConfig(ats->grf_prop.grffile->grfid);
    02975       td->grf = gc->GetName();
    02976     }
    02977   }
    02978
    02979   StringID str;
    02980   switch (GetStationType(tile)) {
    02981     default: NOT_REACHED();
    02982     case STATION_RAIL:     str = STR_LAI_STATION_DESCRIPTION_RAILROAD_STATION; break;
    02983     case STATION_AIRPORT:
    02984       str = (IsHangar(tile) ? STR_LAI_STATION_DESCRIPTION_AIRCRAFT_HANGAR : STR_LAI_STATION_DESCRIPTION_AIRPORT);
    02985       break;
    02986     case STATION_TRUCK:    str = STR_LAI_STATION_DESCRIPTION_TRUCK_LOADING_AREA; break;
    02987     case STATION_BUS:      str = STR_LAI_STATION_DESCRIPTION_BUS_STATION; break;
    02988     case STATION_OILRIG:   str = STR_INDUSTRY_NAME_OIL_RIG; break;
    02989     case STATION_DOCK:     str = STR_LAI_STATION_DESCRIPTION_SHIP_DOCK; break;
    02990     case STATION_BUOY:     str = STR_LAI_STATION_DESCRIPTION_BUOY; break;
    02991     case STATION_WAYPOINT: str = STR_LAI_STATION_DESCRIPTION_WAYPOINT; break;
    02992   }
    02993   td->str = str;
    02994 }
    02995
    02996
    02997 static TrackStatus GetTileTrackStatus_Station(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
    02998 {
    02999   TrackBits trackbits = TRACK_BIT_NONE;
    03000
    03001   switch (mode) {
    03002     case TRANSPORT_RAIL:
    03003       if (HasStationRail(tile) && !IsStationTileBlocked(tile)) {
    03004         trackbits = TrackToTrackBits(GetRailStationTrack(tile));
    03005       }
    03006       break;
    03007
    03008     case TRANSPORT_WATER:
    03009       /* buoy is coded as a station, it is always on open water */
    03010       if (IsBuoy(tile)) {
    03011         trackbits = TRACK_BIT_ALL;
    03012         /* remove tracks that connect NE map edge */
    03013         if (TileX(tile) == 0) trackbits &= ~(TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_RIGHT);
    03014         /* remove tracks that connect NW map edge */
    03015         if (TileY(tile) == 0) trackbits &= ~(TRACK_BIT_Y | TRACK_BIT_LEFT | TRACK_BIT_UPPER);
    03016       }
    03017       break;
    03018
    03019     case TRANSPORT_ROAD:
    03020       if ((GetRoadTypes(tile) & sub_mode) != 0 && IsRoadStop(tile)) {
    03021         DiagDirection dir = GetRoadStopDir(tile);
    03022         Axis axis = DiagDirToAxis(dir);
    03023
    03024         if (side != INVALID_DIAGDIR) {
    03025           if (axis != DiagDirToAxis(side) || (IsStandardRoadStopTile(tile) && dir != side)) break;
    03026         }
    03027
    03028         trackbits = AxisToTrackBits(axis);
    03029       }
    03030       break;
    03031
    03032     default:
    03033       break;
    03034   }
    03035
    03036   return CombineTrackStatus(TrackBitsToTrackdirBits(trackbits), TRACKDIR_BIT_NONE);
    03037 }
    03038
    03039
    03040 static void TileLoop_Station(TileIndex tile)
    03041 {
    03042   /* FIXME -- GetTileTrackStatus_Station -> animated stationtiles
    03043    * hardcoded.....not good */
    03044   switch (GetStationType(tile)) {
    03045     case STATION_AIRPORT:
    03046       AirportTileAnimationTrigger(Station::GetByTile(tile), tile, AAT_TILELOOP);
    03047       break;
    03048
    03049     case STATION_DOCK:
    03050       if (GetTileSlope(tile) != SLOPE_FLAT) break; // only handle water part
    03051       /* FALL THROUGH */
    03052     case STATION_OILRIG: //(station part)
    03053     case STATION_BUOY:
    03054       TileLoop_Water(tile);
    03055       break;
    03056
    03057     default: break;
    03058   }
    03059 }
    03060
    03061
    03062 static void AnimateTile_Station(TileIndex tile)
    03063 {
    03064   if (HasStationRail(tile)) {
    03065     AnimateStationTile(tile);
    03066     return;
    03067   }
    03068
    03069   if (IsAirport(tile)) {
    03070     AnimateAirportTile(tile);
    03071   }
    03072 }
    03073
    03074
    03075 static bool ClickTile_Station(TileIndex tile)
    03076 {
    03077   const BaseStation *bst = BaseStation::GetByTile(tile);
    03078
    03079   if (bst->facilities & FACIL_WAYPOINT) {
    03080     ShowWaypointWindow(Waypoint::From(bst));
    03081   } else if (IsHangar(tile)) {
    03082     const Station *st = Station::From(bst);
    03083     ShowDepotWindow(st->airport.GetHangarTile(st->airport.GetHangarNum(tile)), VEH_AIRCRAFT);
    03084   } else {
    03085     ShowStationViewWindow(bst->index);
    03086   }
    03087   return true;
    03088 }
    03089
    03090 static VehicleEnterTileStatus VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
    03091 {
    03092   if (v->type == VEH_TRAIN) {
    03093     StationID station_id = GetStationIndex(tile);
    03094     if (!v->current_order.ShouldStopAtStation(v, station_id)) return VETSB_CONTINUE;
    03095     if (!IsRailStation(tile) || !v->IsFrontEngine()) return VETSB_CONTINUE;
    03096
    03097     int station_ahead;
    03098     int station_length;
    03099     int stop = GetTrainStopLocation(station_id, tile, Train::From(v), &station_ahead, &station_length);
    03100
    03101     /* Stop whenever that amount of station ahead + the distance from the
    03102      * begin of the platform to the stop location is longer than the length
    03103      * of the platform. Station ahead 'includes' the current tile where the
    03104      * vehicle is on, so we need to subtract that. */
    03105     if (!IsInsideBS(stop + station_ahead, station_length, TILE_SIZE)) return VETSB_CONTINUE;
    03106
    03107     DiagDirection dir = DirToDiagDir(v->direction);
    03108
    03109     x &= 0xF;
    03110     y &= 0xF;
    03111
    03112     if (DiagDirToAxis(dir) != AXIS_X) Swap(x, y);
    03113     if (y == TILE_SIZE / 2) {
    03114       if (dir != DIAGDIR_SE && dir != DIAGDIR_SW) x = TILE_SIZE - 1 - x;
    03115       stop &= TILE_SIZE - 1;
    03116
    03117       if (x == stop) return VETSB_ENTERED_STATION | (VehicleEnterTileStatus)(station_id << VETS_STATION_ID_OFFSET); // enter station
    03118       if (x < stop) {
    03119         uint16 spd;
    03120
    03121         v->vehstatus |= VS_TRAIN_SLOWING;
    03122         spd = max(0, (stop - x) * 20 - 15);
    03123         if (spd < v->cur_speed) v->cur_speed = spd;
    03124       }
    03125     }
    03126   } else if (v->type == VEH_ROAD) {
    03127     RoadVehicle *rv = RoadVehicle::From(v);
    03128     if (rv->state < RVSB_IN_ROAD_STOP && !IsReversingRoadTrackdir((Trackdir)rv->state) && rv->frame == 0) {
    03129       if (IsRoadStop(tile) && rv->IsFrontEngine()) {
    03130         /* Attempt to allocate a parking bay in a road stop */
    03131         return RoadStop::GetByTile(tile, GetRoadStopType(tile))->Enter(rv) ? VETSB_CONTINUE : VETSB_CANNOT_ENTER;
    03132       }
    03133     }
    03134   }
    03135
    03136   return VETSB_CONTINUE;
    03137 }
    03138
    03143 void TriggerWatchedCargoCallbacks(Station *st)
    03144 {
    03145   /* Collect cargoes accepted since the last big tick. */
    03146   uint cargoes = 0;
    03147   for (CargoID cid = 0; cid < NUM_CARGO; cid++) {
    03148     if (HasBit(st->goods[cid].acceptance_pickup, GoodsEntry::GES_ACCEPTED_BIGTICK)) SetBit(cargoes, cid);
    03149   }
    03150
    03151   /* Anything to do? */
    03152   if (cargoes == 0) return;
    03153
    03154   /* Loop over all houses in the catchment. */
    03155   Rect r = st->GetCatchmentRect();
    03156   TileArea ta(TileXY(r.left, r.top), TileXY(r.right, r.bottom));
    03157   TILE_AREA_LOOP(tile, ta) {
    03158     if (IsTileType(tile, MP_HOUSE)) {
    03159       WatchedCargoCallback(tile, cargoes);
    03160     }
    03161   }
    03162 }
    03163
    03170 static bool StationHandleBigTick(BaseStation *st)
    03171 {
    03172   if (!st->IsInUse()) {
    03173     if (++st->delete_ctr >= 8) delete st;
    03174     return false;
    03175   }
    03176
    03177   if (Station::IsExpected(st)) {
    03178     TriggerWatchedCargoCallbacks(Station::From(st));
    03179
    03180     for (CargoID i = 0; i < NUM_CARGO; i++) {
    03181       ClrBit(Station::From(st)->goods[i].acceptance_pickup, GoodsEntry::GES_ACCEPTED_BIGTICK);
    03182     }
    03183   }
    03184
    03185
    03186   if ((st->facilities & FACIL_WAYPOINT) == 0) UpdateStationAcceptance(Station::From(st), true);
    03187
    03188   return true;
    03189 }
    03190
    03191 static inline void byte_inc_sat(byte *p)
    03192 {
    03193   byte b = *p + 1;
    03194   if (b != 0) *p = b;
    03195 }
    03196
    03197 static void UpdateStationRating(Station *st)
    03198 {
    03199   bool waiting_changed = false;
    03200
    03201   byte_inc_sat(&st->time_since_load);
    03202   byte_inc_sat(&st->time_since_unload);
    03203
    03204   const CargoSpec *cs;
    03205   FOR_ALL_CARGOSPECS(cs) {
    03206     GoodsEntry *ge = &st->goods[cs->Index()];
    03207     /* Slowly increase the rating back to his original level in the case we
    03208      *  didn't deliver cargo yet to this station. This happens when a bribe
    03209      *  failed while you didn't moved that cargo yet to a station. */
    03210     if (!HasBit(ge->acceptance_pickup, GoodsEntry::GES_PICKUP) && ge->rating < INITIAL_STATION_RATING) {
    03211       ge->rating++;
    03212     }
    03213
    03214     /* Only change the rating if we are moving this cargo */
    03215     if (HasBit(ge->acceptance_pickup, GoodsEntry::GES_PICKUP)) {
    03216       byte_inc_sat(&ge->time_since_pickup);
    03217
    03218       bool skip = false;
    03219       int rating = 0;
    03220       uint waiting = ge->cargo.Count();
    03221
    03222       if (HasBit(cs->callback_mask, CBM_CARGO_STATION_RATING_CALC)) {
    03223         /* Perform custom station rating. If it succeeds the speed, days in transit and
    03224          * waiting cargo ratings must not be executed. */
    03225
    03226         /* NewGRFs expect last speed to be 0xFF when no vehicle has arrived yet. */
    03227         uint last_speed = ge->HasVehicleEverTriedLoading() ? ge->last_speed : 0xFF;
    03228
    03229         uint32 var18 = min(ge->time_since_pickup, 0xFF) | (min(waiting, 0xFFFF) << 8) | (min(last_speed, 0xFF) << 24);
    03230         /* Convert to the 'old' vehicle types */
    03231         uint32 var10 = (st->last_vehicle_type == VEH_INVALID) ? 0x0 : (st->last_vehicle_type + 0x10);
    03232         uint16 callback = GetCargoCallback(CBID_CARGO_STATION_RATING_CALC, var10, var18, cs);
    03233         if (callback != CALLBACK_FAILED) {
    03234           skip = true;
    03235           rating = GB(callback, 0, 14);
    03236
    03237           /* Simulate a 15 bit signed value */
    03238           if (HasBit(callback, 14)) rating -= 0x4000;
    03239         }
    03240       }
    03241
    03242       if (!skip) {
    03243         int b = ge->last_speed - 85;
    03244         if (b >= 0) rating += b >> 2;
    03245
    03246         byte waittime = ge->time_since_pickup;
    03247         if (st->last_vehicle_type == VEH_SHIP) waittime >>= 2;
    03248         (waittime > 21) ||
    03249         (rating += 25, waittime > 12) ||
    03250         (rating += 25, waittime > 6) ||
    03251         (rating += 45, waittime > 3) ||
    03252         (rating += 35, true);
    03253
    03254         (rating -= 90, waiting > 1500) ||
    03255         (rating += 55, waiting > 1000) ||
    03256         (rating += 35, waiting > 600) ||
    03257         (rating += 10, waiting > 300) ||
    03258         (rating += 20, waiting > 100) ||
    03259         (rating += 10, true);
    03260       }
    03261
    03262       if (Company::IsValidID(st->owner) && HasBit(st->town->statues, st->owner)) rating += 26;
    03263
    03264       byte age = ge->last_age;
    03265       (age >= 3) ||
    03266       (rating += 10, age >= 2) ||
    03267       (rating += 10, age >= 1) ||
    03268       (rating += 13, true);
    03269
    03270       {
    03271         int or_ = ge->rating; // old rating
    03272
    03273         /* only modify rating in steps of -2, -1, 0, 1 or 2 */
    03274         ge->rating = rating = or_ + Clamp(Clamp(rating, 0, 255) - or_, -2, 2);
    03275
    03276         /* if rating is <= 64 and more than 200 items waiting,
    03277          * remove some random amount of goods from the station */
    03278         if (rating <= 64 && waiting >= 200) {
    03279           int dec = Random() & 0x1F;
    03280           if (waiting < 400) dec &= 7;
    03281           waiting -= dec + 1;
    03282           waiting_changed = true;
    03283         }
    03284
    03285         /* if rating is <= 127 and there are any items waiting, maybe remove some goods. */
    03286         if (rating <= 127 && waiting != 0) {
    03287           uint32 r = Random();
    03288           if (rating <= (int)GB(r, 0, 7)) {
    03289             /* Need to have int, otherwise it will just overflow etc. */
    03290             waiting = max((int)waiting - (int)GB(r, 8, 2) - 1, 0);
    03291             waiting_changed = true;
    03292           }
    03293         }
    03294
    03295         /* At some point we really must cap the cargo. Previously this
    03296          * was a strict 4095, but now we'll have a less strict, but
    03297          * increasingly aggressive truncation of the amount of cargo. */
    03298         static const uint WAITING_CARGO_THRESHOLD  = 1 << 12;
    03299         static const uint WAITING_CARGO_CUT_FACTOR = 1 <<  6;
    03300         static const uint MAX_WAITING_CARGO        = 1 << 15;
    03301
    03302         if (waiting > WAITING_CARGO_THRESHOLD) {
    03303           uint difference = waiting - WAITING_CARGO_THRESHOLD;
    03304           waiting -= (difference / WAITING_CARGO_CUT_FACTOR);
    03305
    03306           waiting = min(waiting, MAX_WAITING_CARGO);
    03307           waiting_changed = true;
    03308         }
    03309
    03310         if (waiting_changed) ge->cargo.Truncate(waiting);
    03311       }
    03312     }
    03313   }
    03314
    03315   StationID index = st->index;
    03316   if (waiting_changed) {
    03317     SetWindowDirty(WC_STATION_VIEW, index); // update whole window
    03318   } else {
    03319     SetWindowWidgetDirty(WC_STATION_VIEW, index, WID_SV_ACCEPT_RATING_LIST); // update only ratings list
    03320   }
    03321 }
    03322
    03323 /* called for every station each tick */
    03324 static void StationHandleSmallTick(BaseStation *st)
    03325 {
    03326   if ((st->facilities & FACIL_WAYPOINT) != 0 || !st->IsInUse()) return;
    03327
    03328   byte b = st->delete_ctr + 1;
    03329   if (b >= STATION_RATING_TICKS) b = 0;
    03330   st->delete_ctr = b;
    03331
    03332   if (b == 0) UpdateStationRating(Station::From(st));
    03333 }
    03334
    03335 void OnTick_Station()
    03336 {
    03337   if (_game_mode == GM_EDITOR) return;
    03338
    03339   BaseStation *st;
    03340   FOR_ALL_BASE_STATIONS(st) {
    03341     StationHandleSmallTick(st);
    03342
    03343     /* Run STATION_ACCEPTANCE_TICKS = 250 tick interval trigger for station animation.
    03344      * Station index is included so that triggers are not all done
    03345      * at the same time. */
    03346     if ((_tick_counter + st->index) % STATION_ACCEPTANCE_TICKS == 0) {
    03347       /* Stop processing this station if it was deleted */
    03348       if (!StationHandleBigTick(st)) continue;
    03349       TriggerStationAnimation(st, st->xy, SAT_250_TICKS);
    03350       if (Station::IsExpected(st)) AirportAnimationTrigger(Station::From(st), AAT_STATION_250_TICKS);
    03351     }
    03352   }
    03353 }
    03354
    03356 void StationMonthlyLoop()
    03357 {
    03358   Station *st;
    03359
    03360   FOR_ALL_STATIONS(st) {
    03361     for (CargoID i = 0; i < NUM_CARGO; i++) {
    03362       GoodsEntry *ge = &st->goods[i];
    03363       SB(ge->acceptance_pickup, GoodsEntry::GES_LAST_MONTH, 1, GB(ge->acceptance_pickup, GoodsEntry::GES_CURRENT_MONTH, 1));
    03364       ClrBit(ge->acceptance_pickup, GoodsEntry::GES_CURRENT_MONTH);
    03365     }
    03366   }
    03367 }
    03368
    03369
    03370 void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint radius)
    03371 {
    03372   Station *st;
    03373
    03374   FOR_ALL_STATIONS(st) {
    03375     if (st->owner == owner &&
    03376         DistanceManhattan(tile, st->xy) <= radius) {
    03377       for (CargoID i = 0; i < NUM_CARGO; i++) {
    03378         GoodsEntry *ge = &st->goods[i];
    03379
    03380         if (ge->acceptance_pickup != 0) {
    03381           ge->rating = Clamp(ge->rating + amount, 0, 255);
    03382         }
    03383       }
    03384     }
    03385   }
    03386 }
    03387
    03388 static uint UpdateStationWaiting(Station *st, CargoID type, uint amount, SourceType source_type, SourceID source_id)
    03389 {
    03390   /* We can't allocate a CargoPacket? Then don't do anything
    03391    * at all; i.e. just discard the incoming cargo. */
    03392   if (!CargoPacket::CanAllocateItem()) return 0;
    03393
    03394   GoodsEntry &ge = st->goods[type];
    03395   amount += ge.amount_fract;
    03396   ge.amount_fract = GB(amount, 0, 8);
    03397
    03398   amount >>= 8;
    03399   /* No new "real" cargo item yet. */
    03400   if (amount == 0) return 0;
    03401
    03402   ge.cargo.Append(new CargoPacket(st->index, st->xy, amount, source_type, source_id));
    03403
    03404   if (!HasBit(ge.acceptance_pickup, GoodsEntry::GES_PICKUP)) {
    03405     InvalidateWindowData(WC_STATION_LIST, st->index);
    03406     SetBit(ge.acceptance_pickup, GoodsEntry::GES_PICKUP);
    03407   }
    03408
    03409   TriggerStationRandomisation(st, st->xy, SRT_NEW_CARGO, type);
    03410   TriggerStationAnimation(st, st->xy, SAT_NEW_CARGO, type);
    03411   AirportAnimationTrigger(st, AAT_STATION_NEW_CARGO, type);
    03412
    03413   SetWindowDirty(WC_STATION_VIEW, st->index);
    03414   st->MarkTilesDirty(true);
    03415   return amount;
    03416 }
    03417
    03418 static bool IsUniqueStationName(const char *name)
    03419 {
    03420   const Station *st;
    03421
    03422   FOR_ALL_STATIONS(st) {
    03423     if (st->name != NULL && strcmp(st->name, name) == 0) return false;
    03424   }
    03425
    03426   return true;
    03427 }
    03428
    03438 CommandCost CmdRenameStation(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    03439 {
    03440   Station *st = Station::GetIfValid(p1);
    03441   if (st == NULL) return CMD_ERROR;
    03442
    03443   CommandCost ret = CheckOwnership(st->owner);
    03444   if (ret.Failed()) return ret;
    03445
    03446   bool reset = StrEmpty(text);
    03447
    03448   if (!reset) {
    03449     if (Utf8StringLength(text) >= MAX_LENGTH_STATION_NAME_CHARS) return CMD_ERROR;
    03450     if (!IsUniqueStationName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
    03451   }
    03452
    03453   if (flags & DC_EXEC) {
    03454     free(st->name);
    03455     st->name = reset ? NULL : strdup(text);
    03456
    03457     st->UpdateVirtCoord();
    03458     InvalidateWindowData(WC_STATION_LIST, st->owner, 1);
    03459   }
    03460
    03461   return CommandCost();
    03462 }
    03463
    03470 void FindStationsAroundTiles(const TileArea &location, StationList *stations)
    03471 {
    03472   /* area to search = producer plus station catchment radius */
    03473   uint max_rad = (_settings_game.station.modified_catchment ? MAX_CATCHMENT : CA_UNMODIFIED);
    03474
    03475   uint x = TileX(location.tile);
    03476   uint y = TileY(location.tile);
    03477
    03478   uint min_x = (x > max_rad) ? x - max_rad : 0;
    03479   uint max_x = x + location.w + max_rad;
    03480   uint min_y = (y > max_rad) ? y - max_rad : 0;
    03481   uint max_y = y + location.h + max_rad;
    03482
    03483   if (min_x == 0 && _settings_game.construction.freeform_edges) min_x = 1;
    03484   if (min_y == 0 && _settings_game.construction.freeform_edges) min_y = 1;
    03485   if (max_x >= MapSizeX()) max_x = MapSizeX() - 1;
    03486   if (max_y >= MapSizeY()) max_y = MapSizeY() - 1;
    03487
    03488   for (uint cy = min_y; cy < max_y; cy++) {
    03489     for (uint cx = min_x; cx < max_x; cx++) {
    03490       TileIndex cur_tile = TileXY(cx, cy);
    03491       if (!IsTileType(cur_tile, MP_STATION)) continue;
    03492
    03493       Station *st = Station::GetByTile(cur_tile);
    03494       /* st can be NULL in case of waypoints */
    03495       if (st == NULL) continue;
    03496
    03497       if (_settings_game.station.modified_catchment) {
    03498         int rad = st->GetCatchmentRadius();
    03499         int rad_x = cx - x;
    03500         int rad_y = cy - y;
    03501
    03502         if (rad_x < -rad || rad_x >= rad + location.w) continue;
    03503         if (rad_y < -rad || rad_y >= rad + location.h) continue;
    03504       }
    03505
    03506       /* Insert the station in the set. This will fail if it has
    03507        * already been added.
    03508        */
    03509       stations->Include(st);
    03510     }
    03511   }
    03512 }
    03513
    03518 const StationList *StationFinder::GetStations()
    03519 {
    03520   if (this->tile != INVALID_TILE) {
    03521     FindStationsAroundTiles(*this, &this->stations);
    03522     this->tile = INVALID_TILE;
    03523   }
    03524   return &this->stations;
    03525 }
    03526
    03527 uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations)
    03528 {
    03529   /* Return if nothing to do. Also the rounding below fails for 0. */
    03530   if (amount == 0) return 0;
    03531
    03532   Station *st1 = NULL;   // Station with best rating
    03533   Station *st2 = NULL;   // Second best station
    03534   uint best_rating1 = 0; // rating of st1
    03535   uint best_rating2 = 0; // rating of st2
    03536
    03537   for (Station * const *st_iter = all_stations->Begin(); st_iter != all_stations->End(); ++st_iter) {
    03538     Station *st = *st_iter;
    03539
    03540     /* Is the station reserved exclusively for somebody else? */
    03541     if (st->town->exclusive_counter > 0 && st->town->exclusivity != st->owner) continue;
    03542
    03543     if (st->goods[type].rating == 0) continue; // Lowest possible rating, better not to give cargo anymore
    03544
    03545     if (_settings_game.order.selectgoods && !st->goods[type].HasVehicleEverTriedLoading()) continue; // Selectively servicing stations, and not this one
    03546
    03547     if (IsCargoInClass(type, CC_PASSENGERS)) {
    03548       if (st->facilities == FACIL_TRUCK_STOP) continue; // passengers are never served by just a truck stop
    03549     } else {
    03550       if (st->facilities == FACIL_BUS_STOP) continue; // non-passengers are never served by just a bus stop
    03551     }
    03552
    03553     /* This station can be used, add it to st1/st2 */
    03554     if (st1 == NULL || st->goods[type].rating >= best_rating1) {
    03555       st2 = st1; best_rating2 = best_rating1; st1 = st; best_rating1 = st->goods[type].rating;
    03556     } else if (st2 == NULL || st->goods[type].rating >= best_rating2) {
    03557       st2 = st; best_rating2 = st->goods[type].rating;
    03558     }
    03559   }
    03560
    03561   /* no stations around at all? */
    03562   if (st1 == NULL) return 0;
    03563
    03564   /* From now we'll calculate with fractal cargo amounts.
    03565    * First determine how much cargo we really have. */
    03566   amount *= best_rating1 + 1;
    03567
    03568   if (st2 == NULL) {
    03569     /* only one station around */
    03570     return UpdateStationWaiting(st1, type, amount, source_type, source_id);
    03571   }
    03572
    03573   /* several stations around, the best two (highest rating) are in st1 and st2 */
    03574   assert(st1 != NULL);
    03575   assert(st2 != NULL);
    03576   assert(best_rating1 != 0 || best_rating2 != 0);
    03577
    03578   /* Then determine the amount the worst station gets. We do it this way as the
    03579    * best should get a bonus, which in this case is the rounding difference from
    03580    * this calculation. In reality that will mean the bonus will be pretty low.
    03581    * Nevertheless, the best station should always get the most cargo regardless
    03582    * of rounding issues. */
    03583   uint worst_cargo = amount * best_rating2 / (best_rating1 + best_rating2);
    03584   assert(worst_cargo <= (amount - worst_cargo));
    03585
    03586   /* And then send the cargo to the stations! */
    03587   uint moved = UpdateStationWaiting(st1, type, amount - worst_cargo, source_type, source_id);
    03588   /* These two UpdateStationWaiting's can't be in the statement as then the order
    03589    * of execution would be undefined and that could cause desyncs with callbacks. */
    03590   return moved + UpdateStationWaiting(st2, type, worst_cargo, source_type, source_id);
    03591 }
    03592
    03593 void BuildOilRig(TileIndex tile)
    03594 {
    03595   if (!Station::CanAllocateItem()) {
    03596     DEBUG(misc, 0, "Can't allocate station for oilrig at 0x%X, reverting to oilrig only", tile);
    03597     return;
    03598   }
    03599
    03600   Station *st = new Station(tile);
    03601   st->town = ClosestTownFromTile(tile, UINT_MAX);
    03602
    03603   st->string_id = GenerateStationName(st, tile, STATIONNAMING_OILRIG);
    03604
    03605   assert(IsTileType(tile, MP_INDUSTRY));
    03606   DeleteAnimatedTile(tile);
    03607   MakeOilrig(tile, st->index, GetWaterClass(tile));
    03608
    03609   st->owner = OWNER_NONE;
    03610   st->airport.type = AT_OILRIG;
    03611   st->airport.Add(tile);
    03612   st->dock_tile = tile;
    03613   st->facilities = FACIL_AIRPORT | FACIL_DOCK;
    03614   st->build_date = _date;
    03615
    03616   st->rect.BeforeAddTile(tile, StationRect::ADD_FORCE);
    03617
    03618   st->UpdateVirtCoord();
    03619   UpdateStationAcceptance(st, false);
    03620   st->RecomputeIndustriesNear();
    03621 }
    03622
    03623 void DeleteOilRig(TileIndex tile)
    03624 {
    03625   Station *st = Station::GetByTile(tile);
    03626
    03627   MakeWaterKeepingClass(tile, OWNER_NONE);
    03628
    03629   st->dock_tile = INVALID_TILE;
    03630   st->airport.Clear();
    03631   st->facilities &= ~(FACIL_AIRPORT | FACIL_DOCK);
    03632   st->airport.flags = 0;
    03633
    03634   st->rect.AfterRemoveTile(st, tile);
    03635
    03636   st->UpdateVirtCoord();
    03637   st->RecomputeIndustriesNear();
    03638   if (!st->IsInUse()) delete st;
    03639 }
    03640
    03641 static void ChangeTileOwner_Station(TileIndex tile, Owner old_owner, Owner new_owner)
    03642 {
    03643   if (IsRoadStopTile(tile)) {
    03644     for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
    03645       /* Update all roadtypes, no matter if they are present */
    03646       if (GetRoadOwner(tile, rt) == old_owner) {
    03647         if (HasTileRoadType(tile, rt)) {
    03648           /* A drive-through road-stop has always two road bits. No need to dirty windows here, we'll redraw the whole screen anyway. */
    03649           Company::Get(old_owner)->infrastructure.road[rt] -= 2;
    03650           if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.road[rt] += 2;
    03651         }
    03652         SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
    03653       }
    03654     }
    03655   }
    03656
    03657   if (!IsTileOwner(tile, old_owner)) return;
    03658
    03659   if (new_owner != INVALID_OWNER) {
    03660     /* Update company infrastructure counts. Only do it here
    03661      * if the new owner is valid as otherwise the clear
    03662      * command will do it for us. No need to dirty windows
    03663      * here, we'll redraw the whole screen anyway.*/
    03664     Company *old_company = Company::Get(old_owner);
    03665     Company *new_company = Company::Get(new_owner);
    03666
    03667     /* Update counts for underlying infrastructure. */
    03668     switch (GetStationType(tile)) {
    03669       case STATION_RAIL:
    03670       case STATION_WAYPOINT:
    03671         if (!IsStationTileBlocked(tile)) {
    03672           old_company->infrastructure.rail[GetRailType(tile)]--;
    03673           new_company->infrastructure.rail[GetRailType(tile)]++;
    03674         }
    03675         break;
    03676
    03677       case STATION_BUS:
    03678       case STATION_TRUCK:
    03679         /* Road stops were already handled above. */
    03680         break;
    03681
    03682       case STATION_BUOY:
    03683       case STATION_DOCK:
    03684         if (GetWaterClass(tile) == WATER_CLASS_CANAL) {
    03685           old_company->infrastructure.water--;
    03686           new_company->infrastructure.water++;
    03687         }
    03688         break;
    03689
    03690       default:
    03691         break;
    03692     }
    03693
    03694     /* Update station tile count. */
    03695     if (!IsBuoy(tile) && !IsAirport(tile)) {
    03696       old_company->infrastructure.station--;
    03697       new_company->infrastructure.station++;
    03698     }
    03699
    03700     /* for buoys, owner of tile is owner of water, st->owner == OWNER_NONE */
    03701     SetTileOwner(tile, new_owner);
    03702     InvalidateWindowClassesData(WC_STATION_LIST, 0);
    03703   } else {
    03704     if (IsDriveThroughStopTile(tile)) {
    03705       /* Remove the drive-through road stop */
    03706       DoCommand(tile, 1 | 1 << 8, (GetStationType(tile) == STATION_TRUCK) ? ROADSTOP_TRUCK : ROADSTOP_BUS, DC_EXEC | DC_BANKRUPT, CMD_REMOVE_ROAD_STOP);
    03707       assert(IsTileType(tile, MP_ROAD));
    03708       /* Change owner of tile and all roadtypes */
    03709       ChangeTileOwner(tile, old_owner, new_owner);
    03710     } else {
    03711       DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
    03712       /* Set tile owner of water under (now removed) buoy and dock to OWNER_NONE.
    03713        * Update owner of buoy if it was not removed (was in orders).
    03714        * Do not update when owned by OWNER_WATER (sea and rivers). */
    03715       if ((IsTileType(tile, MP_WATER) || IsBuoyTile(tile)) && IsTileOwner(tile, old_owner)) SetTileOwner(tile, OWNER_NONE);
    03716     }
    03717   }
    03718 }
    03719
    03728 static bool CanRemoveRoadWithStop(TileIndex tile, DoCommandFlag flags)
    03729 {
    03730   /* Yeah... water can always remove stops, right? */
    03731   if (_current_company == OWNER_WATER) return true;
    03732
    03733   RoadTypes rts = GetRoadTypes(tile);
    03734   if (HasBit(rts, ROADTYPE_TRAM)) {
    03735     Owner tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    03736     if (tram_owner != OWNER_NONE && CheckOwnership(tram_owner).Failed()) return false;
    03737   }
    03738   if (HasBit(rts, ROADTYPE_ROAD)) {
    03739     Owner road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    03740     if (road_owner != OWNER_TOWN) {
    03741       if (road_owner != OWNER_NONE && CheckOwnership(road_owner).Failed()) return false;
    03742     } else {
    03743       if (CheckAllowRemoveRoad(tile, GetAnyRoadBits(tile, ROADTYPE_ROAD), OWNER_TOWN, ROADTYPE_ROAD, flags).Failed()) return false;
    03744     }
    03745   }
    03746
    03747   return true;
    03748 }
    03749
    03756 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags)
    03757 {
    03758   if (flags & DC_AUTO) {
    03759     switch (GetStationType(tile)) {
    03760       default: break;
    03761       case STATION_RAIL:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_RAILROAD);
    03762       case STATION_WAYPOINT: return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
    03763       case STATION_AIRPORT:  return_cmd_error(STR_ERROR_MUST_DEMOLISH_AIRPORT_FIRST);
    03764       case STATION_TRUCK:    return_cmd_error(HasTileRoadType(tile, ROADTYPE_TRAM) ? STR_ERROR_MUST_DEMOLISH_CARGO_TRAM_STATION_FIRST : STR_ERROR_MUST_DEMOLISH_TRUCK_STATION_FIRST);
    03765       case STATION_BUS:      return_cmd_error(HasTileRoadType(tile, ROADTYPE_TRAM) ? STR_ERROR_MUST_DEMOLISH_PASSENGER_TRAM_STATION_FIRST : STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST);
    03766       case STATION_BUOY:     return_cmd_error(STR_ERROR_BUOY_IN_THE_WAY);
    03767       case STATION_DOCK:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_DOCK_FIRST);
    03768       case STATION_OILRIG:
    03769         SetDParam(1, STR_INDUSTRY_NAME_OIL_RIG);
    03770         return_cmd_error(STR_ERROR_GENERIC_OBJECT_IN_THE_WAY);
    03771     }
    03772   }
    03773
    03774   switch (GetStationType(tile)) {
    03775     case STATION_RAIL:     return RemoveRailStation(tile, flags);
    03776     case STATION_WAYPOINT: return RemoveRailWaypoint(tile, flags);
    03777     case STATION_AIRPORT:  return RemoveAirport(tile, flags);
    03778     case STATION_TRUCK:
    03779       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
    03780         return_cmd_error(STR_ERROR_MUST_DEMOLISH_TRUCK_STATION_FIRST);
    03781       }
    03782       return RemoveRoadStop(tile, flags);
    03783     case STATION_BUS:
    03784       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
    03785         return_cmd_error(STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST);
    03786       }
    03787       return RemoveRoadStop(tile, flags);
    03788     case STATION_BUOY:     return RemoveBuoy(tile, flags);
    03789     case STATION_DOCK:     return RemoveDock(tile, flags);
    03790     default: break;
    03791   }
    03792
    03793   return CMD_ERROR;
    03794 }
    03795
    03796 static CommandCost TerraformTile_Station(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
    03797 {
    03798   if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
    03799     /* TODO: If you implement newgrf callback 149 'land slope check', you have to decide what to do with it here.
    03800      *       TTDP does not call it.
    03801      */
    03802     if (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new)) {
    03803       switch (GetStationType(tile)) {
    03804         case STATION_WAYPOINT:
    03805         case STATION_RAIL: {
    03806           DiagDirection direction = AxisToDiagDir(GetRailStationAxis(tile));
    03807           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03808           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03809           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03810         }
    03811
    03812         case STATION_AIRPORT:
    03813           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03814
    03815         case STATION_TRUCK:
    03816         case STATION_BUS: {
    03817           DiagDirection direction = GetRoadStopDir(tile);
    03818           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03819           if (IsDriveThroughStopTile(tile)) {
    03820             if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03821           }
    03822           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03823         }
    03824
    03825         default: break;
    03826       }
    03827     }
    03828   }
    03829   return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    03830 }
    03831
    03832
    03833 extern const TileTypeProcs _tile_type_station_procs = {
    03834   DrawTile_Station,           // draw_tile_proc
    03835   GetSlopePixelZ_Station,     // get_slope_z_proc
    03836   ClearTile_Station,          // clear_tile_proc
    03837   NULL,                       // add_accepted_cargo_proc
    03838   GetTileDesc_Station,        // get_tile_desc_proc
    03839   GetTileTrackStatus_Station, // get_tile_track_status_proc
    03840   ClickTile_Station,          // click_tile_proc
    03841   AnimateTile_Station,        // animate_tile_proc
    03842   TileLoop_Station,           // tile_loop_proc
    03843   ChangeTileOwner_Station,    // change_tile_owner_proc
    03844   NULL,                       // add_produced_cargo_proc
    03845   VehicleEnter_Station,       // vehicle_enter_tile_proc
    03846   GetFoundation_Station,      // get_foundation_proc
    03847   TerraformTile_Station,      // terraform_tile_proc
    03848 };