# station_cmd.cpp

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    00001 /* $Id$ */
    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 acceptange 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     do {
    01240       TileIndex tile = tile_org;
    01241       int w = plat_len;
    01242       do {
    01243         byte layout = *layout_ptr++;
    01244         if (IsRailStationTile(tile) && HasStationReservation(tile)) {
    01245           /* Check for trains having a reservation for this tile. */
    01246           Train *v = GetTrainForReservation(tile, AxisToTrack(GetRailStationAxis(tile)));
    01247           if (v != NULL) {
    01248             FreeTrainTrackReservation(v);
    01249             *affected_vehicles.Append() = v;
    01250             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01251             for (; v->Next() != NULL; v = v->Next()) { }
    01252             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), false);
    01253           }
    01254         }
    01255
    01256         /* Railtype can change when overbuilding. */
    01257         if (IsRailStationTile(tile)) {
    01258           if (!IsStationTileBlocked(tile)) c->infrastructure.rail[GetRailType(tile)]--;
    01259           c->infrastructure.station--;
    01260         }
    01261
    01262         /* Remove animation if overbuilding */
    01263         DeleteAnimatedTile(tile);
    01264         byte old_specindex = HasStationTileRail(tile) ? GetCustomStationSpecIndex(tile) : 0;
    01265         MakeRailStation(tile, st->owner, st->index, axis, layout & ~1, rt);
    01266         /* Free the spec if we overbuild something */
    01267         DeallocateSpecFromStation(st, old_specindex);
    01268
    01269         SetCustomStationSpecIndex(tile, specindex);
    01270         SetStationTileRandomBits(tile, GB(Random(), 0, 4));
    01271         SetAnimationFrame(tile, 0);
    01272
    01273         if (!IsStationTileBlocked(tile)) c->infrastructure.rail[rt]++;
    01274         c->infrastructure.station++;
    01275
    01276         if (statspec != NULL) {
    01277           /* Use a fixed axis for GetPlatformInfo as our platforms / numtracks are always the right way around */
    01278           uint32 platinfo = GetPlatformInfo(AXIS_X, 0, plat_len, numtracks_orig, plat_len - w, numtracks_orig - numtracks, false);
    01279
    01280           /* As the station is not yet completely finished, the station does not yet exist. */
    01281           uint16 callback = GetStationCallback(CBID_STATION_TILE_LAYOUT, platinfo, 0, statspec, NULL, tile);
    01282           if (callback != CALLBACK_FAILED) {
    01283             if (callback < 8) {
    01284               SetStationGfx(tile, (callback & ~1) + axis);
    01285             } else {
    01286               ErrorUnknownCallbackResult(statspec->grf_prop.grffile->grfid, CBID_STATION_TILE_LAYOUT, callback);
    01287             }
    01288           }
    01289
    01290           /* Trigger station animation -- after building? */
    01291           TriggerStationAnimation(st, tile, SAT_BUILT);
    01292         }
    01293
    01294         tile += tile_delta;
    01295       } while (--w);
    01296       AddTrackToSignalBuffer(tile_org, track, _current_company);
    01297       YapfNotifyTrackLayoutChange(tile_org, track);
    01298       tile_org += tile_delta ^ TileDiffXY(1, 1); // perpendicular to tile_delta
    01299     } while (--numtracks);
    01300
    01301     for (uint i = 0; i < affected_vehicles.Length(); ++i) {
    01302       /* Restore reservations of trains. */
    01303       Train *v = affected_vehicles[i];
    01304       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01305       TryPathReserve(v, true, true);
    01306       for (; v->Next() != NULL; v = v->Next()) { }
    01307       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01308     }
    01309
    01310     st->MarkTilesDirty(false);
    01311     st->UpdateVirtCoord();
    01312     UpdateStationAcceptance(st, false);
    01313     st->RecomputeIndustriesNear();
    01314     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01315     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01316     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01317     DirtyCompanyInfrastructureWindows(st->owner);
    01318   }
    01319
    01320   return cost;
    01321 }
    01322
    01323 static void MakeRailStationAreaSmaller(BaseStation *st)
    01324 {
    01325   TileArea ta = st->train_station;
    01326
    01327 restart:
    01328
    01329   /* too small? */
    01330   if (ta.w != 0 && ta.h != 0) {
    01331     /* check the left side, x = constant, y changes */
    01332     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(0, i));) {
    01333       /* the left side is unused? */
    01334       if (++i == ta.h) {
    01335         ta.tile += TileDiffXY(1, 0);
    01336         ta.w--;
    01337         goto restart;
    01338       }
    01339     }
    01340
    01341     /* check the right side, x = constant, y changes */
    01342     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(ta.w - 1, i));) {
    01343       /* the right side is unused? */
    01344       if (++i == ta.h) {
    01345         ta.w--;
    01346         goto restart;
    01347       }
    01348     }
    01349
    01350     /* check the upper side, y = constant, x changes */
    01351     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, 0));) {
    01352       /* the left side is unused? */
    01353       if (++i == ta.w) {
    01354         ta.tile += TileDiffXY(0, 1);
    01355         ta.h--;
    01356         goto restart;
    01357       }
    01358     }
    01359
    01360     /* check the lower side, y = constant, x changes */
    01361     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, ta.h - 1));) {
    01362       /* the left side is unused? */
    01363       if (++i == ta.w) {
    01364         ta.h--;
    01365         goto restart;
    01366       }
    01367     }
    01368   } else {
    01369     ta.Clear();
    01370   }
    01371
    01372   st->train_station = ta;
    01373 }
    01374
    01385 template <class T>
    01386 CommandCost RemoveFromRailBaseStation(TileArea ta, SmallVector<T *, 4> &affected_stations, DoCommandFlag flags, Money removal_cost, bool keep_rail)
    01387 {
    01388   /* Count of the number of tiles removed */
    01389   int quantity = 0;
    01390   CommandCost total_cost(EXPENSES_CONSTRUCTION);
    01391
    01392   /* Do the action for every tile into the area */
    01393   TILE_AREA_LOOP(tile, ta) {
    01394     /* Make sure the specified tile is a rail station */
    01395     if (!HasStationTileRail(tile)) continue;
    01396
    01397     /* If there is a vehicle on ground, do not allow to remove (flood) the tile */
    01398     CommandCost ret = EnsureNoVehicleOnGround(tile);
    01399     if (ret.Failed()) continue;
    01400
    01401     /* Check ownership of station */
    01402     T *st = T::GetByTile(tile);
    01403     if (st == NULL) continue;
    01404
    01405     if (_current_company != OWNER_WATER) {
    01406       CommandCost ret = CheckOwnership(st->owner);
    01407       if (ret.Failed()) continue;
    01408     }
    01409
    01410     /* If we reached here, the tile is valid so increase the quantity of tiles we will remove */
    01411     quantity++;
    01412
    01413     if (keep_rail || IsStationTileBlocked(tile)) {
    01414       /* Don't refund the 'steel' of the track when we keep the
    01415        *  rail, or when the tile didn't have any rail at all. */
    01416       total_cost.AddCost(-_price[PR_CLEAR_RAIL]);
    01417     }
    01418
    01419     if (flags & DC_EXEC) {
    01420       /* read variables before the station tile is removed */
    01421       uint specindex = GetCustomStationSpecIndex(tile);
    01422       Track track = GetRailStationTrack(tile);
    01423       Owner owner = GetTileOwner(tile);
    01424       RailType rt = GetRailType(tile);
    01425       Train *v = NULL;
    01426
    01427       if (HasStationReservation(tile)) {
    01428         v = GetTrainForReservation(tile, track);
    01429         if (v != NULL) {
    01430           /* Free train reservation. */
    01431           FreeTrainTrackReservation(v);
    01432           if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01433           Vehicle *temp = v;
    01434           for (; temp->Next() != NULL; temp = temp->Next()) { }
    01435           if (IsRailStationTile(temp->tile)) SetRailStationPlatformReservation(temp->tile, TrackdirToExitdir(ReverseTrackdir(temp->GetVehicleTrackdir())), false);
    01436         }
    01437       }
    01438
    01439       bool build_rail = keep_rail && !IsStationTileBlocked(tile);
    01440       if (!build_rail && !IsStationTileBlocked(tile)) Company::Get(owner)->infrastructure.rail[rt]--;
    01441
    01442       DoClearSquare(tile);
    01443       DeleteNewGRFInspectWindow(GSF_STATIONS, tile);
    01444       if (build_rail) MakeRailNormal(tile, owner, TrackToTrackBits(track), rt);
    01445       Company::Get(owner)->infrastructure.station--;
    01446       DirtyCompanyInfrastructureWindows(owner);
    01447
    01448       st->rect.AfterRemoveTile(st, tile);
    01449       AddTrackToSignalBuffer(tile, track, owner);
    01450       YapfNotifyTrackLayoutChange(tile, track);
    01451
    01452       DeallocateSpecFromStation(st, specindex);
    01453
    01454       affected_stations.Include(st);
    01455
    01456       if (v != NULL) {
    01457         /* Restore station reservation. */
    01458         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01459         TryPathReserve(v, true, true);
    01460         for (; v->Next() != NULL; v = v->Next()) { }
    01461         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01462       }
    01463     }
    01464   }
    01465
    01466   if (quantity == 0) return_cmd_error(STR_ERROR_THERE_IS_NO_STATION);
    01467
    01468   for (T **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01469     T *st = *stp;
    01470
    01471     /* now we need to make the "spanned" area of the railway station smaller
    01472      * if we deleted something at the edges.
    01473      * we also need to adjust train_tile. */
    01474     MakeRailStationAreaSmaller(st);
    01475     UpdateStationSignCoord(st);
    01476
    01477     /* if we deleted the whole station, delete the train facility. */
    01478     if (st->train_station.tile == INVALID_TILE) {
    01479       st->facilities &= ~FACIL_TRAIN;
    01480       SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01481       st->UpdateVirtCoord();
    01482       DeleteStationIfEmpty(st);
    01483     }
    01484   }
    01485
    01486   total_cost.AddCost(quantity * removal_cost);
    01487   return total_cost;
    01488 }
    01489
    01501 CommandCost CmdRemoveFromRailStation(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01502 {
    01503   TileIndex end = p1 == 0 ? start : p1;
    01504   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01505
    01506   TileArea ta(start, end);
    01507   SmallVector<Station *, 4> affected_stations;
    01508
    01509   CommandCost ret = RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_STATION_RAIL], HasBit(p2, 0));
    01510   if (ret.Failed()) return ret;
    01511
    01512   /* Do all station specific functions here. */
    01513   for (Station **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01514     Station *st = *stp;
    01515
    01516     if (st->train_station.tile == INVALID_TILE) SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01517     st->MarkTilesDirty(false);
    01518     st->RecomputeIndustriesNear();
    01519   }
    01520
    01521   /* Now apply the rail cost to the number that we deleted */
    01522   return ret;
    01523 }
    01524
    01536 CommandCost CmdRemoveFromRailWaypoint(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01537 {
    01538   TileIndex end = p1 == 0 ? start : p1;
    01539   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01540
    01541   TileArea ta(start, end);
    01542   SmallVector<Waypoint *, 4> affected_stations;
    01543
    01544   return RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_WAYPOINT_RAIL], HasBit(p2, 0));
    01545 }
    01546
    01547
    01555 template <class T>
    01556 CommandCost RemoveRailStation(T *st, DoCommandFlag flags)
    01557 {
    01558   /* Current company owns the station? */
    01559   if (_current_company != OWNER_WATER) {
    01560     CommandCost ret = CheckOwnership(st->owner);
    01561     if (ret.Failed()) return ret;
    01562   }
    01563
    01564   /* determine width and height of platforms */
    01565   TileArea ta = st->train_station;
    01566
    01567   assert(ta.w != 0 && ta.h != 0);
    01568
    01569   CommandCost cost(EXPENSES_CONSTRUCTION);
    01570   /* clear all areas of the station */
    01571   TILE_AREA_LOOP(tile, ta) {
    01572     /* only remove tiles that are actually train station tiles */
    01573     if (!st->TileBelongsToRailStation(tile)) continue;
    01574
    01575     CommandCost ret = EnsureNoVehicleOnGround(tile);
    01576     if (ret.Failed()) return ret;
    01577
    01578     cost.AddCost(_price[PR_CLEAR_STATION_RAIL]);
    01579     if (flags & DC_EXEC) {
    01580       /* read variables before the station tile is removed */
    01581       Track track = GetRailStationTrack(tile);
    01582       Owner owner = GetTileOwner(tile); // _current_company can be OWNER_WATER
    01583       Train *v = NULL;
    01584       if (HasStationReservation(tile)) {
    01585         v = GetTrainForReservation(tile, track);
    01586         if (v != NULL) FreeTrainTrackReservation(v);
    01587       }
    01588       if (!IsStationTileBlocked(tile)) Company::Get(owner)->infrastructure.rail[GetRailType(tile)]--;
    01589       Company::Get(owner)->infrastructure.station--;
    01590       DoClearSquare(tile);
    01591       DeleteNewGRFInspectWindow(GSF_STATIONS, tile);
    01592       AddTrackToSignalBuffer(tile, track, owner);
    01593       YapfNotifyTrackLayoutChange(tile, track);
    01594       if (v != NULL) TryPathReserve(v, true);
    01595     }
    01596   }
    01597
    01598   if (flags & DC_EXEC) {
    01599     st->rect.AfterRemoveRect(st, st->train_station);
    01600
    01601     st->train_station.Clear();
    01602
    01603     st->facilities &= ~FACIL_TRAIN;
    01604
    01605     free(st->speclist);
    01606     st->num_specs = 0;
    01607     st->speclist  = NULL;
    01608     st->cached_anim_triggers = 0;
    01609
    01610     DirtyCompanyInfrastructureWindows(st->owner);
    01611     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01612     st->UpdateVirtCoord();
    01613     DeleteStationIfEmpty(st);
    01614   }
    01615
    01616   return cost;
    01617 }
    01618
    01625 static CommandCost RemoveRailStation(TileIndex tile, DoCommandFlag flags)
    01626 {
    01627   /* if there is flooding, remove platforms tile by tile */
    01628   if (_current_company == OWNER_WATER) {
    01629     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_STATION);
    01630   }
    01631
    01632   Station *st = Station::GetByTile(tile);
    01633   CommandCost cost = RemoveRailStation(st, flags);
    01634
    01635   if (flags & DC_EXEC) st->RecomputeIndustriesNear();
    01636
    01637   return cost;
    01638 }
    01639
    01646 static CommandCost RemoveRailWaypoint(TileIndex tile, DoCommandFlag flags)
    01647 {
    01648   /* if there is flooding, remove waypoints tile by tile */
    01649   if (_current_company == OWNER_WATER) {
    01650     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_WAYPOINT);
    01651   }
    01652
    01653   return RemoveRailStation(Waypoint::GetByTile(tile), flags);
    01654 }
    01655
    01656
    01662 static RoadStop **FindRoadStopSpot(bool truck_station, Station *st)
    01663 {
    01664   RoadStop **primary_stop = (truck_station) ? &st->truck_stops : &st->bus_stops;
    01665
    01666   if (*primary_stop == NULL) {
    01667     /* we have no roadstop of the type yet, so write a "primary stop" */
    01668     return primary_stop;
    01669   } else {
    01670     /* there are stops already, so append to the end of the list */
    01671     RoadStop *stop = *primary_stop;
    01672     while (stop->next != NULL) stop = stop->next;
    01673     return &stop->next;
    01674   }
    01675 }
    01676
    01677 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags);
    01678
    01688 static CommandCost FindJoiningRoadStop(StationID existing_stop, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
    01689 {
    01690   return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_ROAD_STOP_FIRST>(existing_stop, station_to_join, adjacent, ta, st);
    01691 }
    01692
    01708 CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01709 {
    01710   bool type = HasBit(p2, 0);
    01711   bool is_drive_through = HasBit(p2, 1);
    01712   RoadTypes rts = Extract<RoadTypes, 2, 2>(p2);
    01713   StationID station_to_join = GB(p2, 16, 16);
    01714   bool reuse = (station_to_join != NEW_STATION);
    01715   if (!reuse) station_to_join = INVALID_STATION;
    01716   bool distant_join = (station_to_join != INVALID_STATION);
    01717
    01718   uint8 width = (uint8)GB(p1, 0, 8);
    01719   uint8 lenght = (uint8)GB(p1, 8, 8);
    01720
    01721   /* Check if the requested road stop is too big */
    01722   if (width > _settings_game.station.station_spread || lenght > _settings_game.station.station_spread) return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
    01723   /* Check for incorrect width / length. */
    01724   if (width == 0 || lenght == 0) return CMD_ERROR;
    01725   /* Check if the first tile and the last tile are valid */
    01726   if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, lenght - 1) == INVALID_TILE) return CMD_ERROR;
    01727
    01728   TileArea roadstop_area(tile, width, lenght);
    01729
    01730   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01731
    01732   if (!HasExactlyOneBit(rts) || !HasRoadTypesAvail(_current_company, rts)) return CMD_ERROR;
    01733
    01734   /* Trams only have drive through stops */
    01735   if (!is_drive_through && HasBit(rts, ROADTYPE_TRAM)) return CMD_ERROR;
    01736
    01737   DiagDirection ddir = Extract<DiagDirection, 6, 2>(p2);
    01738
    01739   /* Safeguard the parameters. */
    01740   if (!IsValidDiagDirection(ddir)) return CMD_ERROR;
    01741   /* If it is a drive-through stop, check for valid axis. */
    01742   if (is_drive_through && !IsValidAxis((Axis)ddir)) return CMD_ERROR;
    01743
    01744   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
    01745   if (ret.Failed()) return ret;
    01746
    01747   /* Total road stop cost. */
    01748   CommandCost cost(EXPENSES_CONSTRUCTION, roadstop_area.w * roadstop_area.h * _price[type ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
    01749   StationID est = INVALID_STATION;
    01750   ret = CheckFlatLandRoadStop(roadstop_area, flags, is_drive_through ? 5 << ddir : 1 << ddir, is_drive_through, type, DiagDirToAxis(ddir), &est, rts);
    01751   if (ret.Failed()) return ret;
    01752   cost.AddCost(ret);
    01753
    01754   Station *st = NULL;
    01755   ret = FindJoiningRoadStop(est, station_to_join, HasBit(p2, 5), roadstop_area, &st);
    01756   if (ret.Failed()) return ret;
    01757
    01758   /* Check if this number of road stops can be allocated. */
    01759   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);
    01760
    01761   ret = BuildStationPart(&st, flags, reuse, roadstop_area, STATIONNAMING_ROAD);
    01762   if (ret.Failed()) return ret;
    01763
    01764   if (flags & DC_EXEC) {
    01765     /* Check every tile in the area. */
    01766     TILE_AREA_LOOP(cur_tile, roadstop_area) {
    01767       RoadTypes cur_rts = GetRoadTypes(cur_tile);
    01768       Owner road_owner = HasBit(cur_rts, ROADTYPE_ROAD) ? GetRoadOwner(cur_tile, ROADTYPE_ROAD) : _current_company;
    01769       Owner tram_owner = HasBit(cur_rts, ROADTYPE_TRAM) ? GetRoadOwner(cur_tile, ROADTYPE_TRAM) : _current_company;
    01770
    01771       if (IsTileType(cur_tile, MP_STATION) && IsRoadStop(cur_tile)) {
    01772         RemoveRoadStop(cur_tile, flags);
    01773       }
    01774
    01775       RoadStop *road_stop = new RoadStop(cur_tile);
    01776       /* Insert into linked list of RoadStops. */
    01777       RoadStop **currstop = FindRoadStopSpot(type, st);
    01778       *currstop = road_stop;
    01779
    01780       if (type) {
    01781         st->truck_station.Add(cur_tile);
    01782       } else {
    01783         st->bus_station.Add(cur_tile);
    01784       }
    01785
    01786       /* Initialize an empty station. */
    01787       st->AddFacility((type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, cur_tile);
    01788
    01789       st->rect.BeforeAddTile(cur_tile, StationRect::ADD_TRY);
    01790
    01791       RoadStopType rs_type = type ? ROADSTOP_TRUCK : ROADSTOP_BUS;
    01792       if (is_drive_through) {
    01793         /* Update company infrastructure counts. If the current tile is a normal
    01794          * road tile, count only the new road bits needed to get a full diagonal road. */
    01795         RoadType rt;
    01796         FOR_EACH_SET_ROADTYPE(rt, cur_rts | rts) {
    01797           Company *c = Company::GetIfValid(rt == ROADTYPE_ROAD ? road_owner : tram_owner);
    01798           if (c != NULL) {
    01799             c->infrastructure.road[rt] += 2 - (IsNormalRoadTile(cur_tile) && HasBit(cur_rts, rt) ? CountBits(GetRoadBits(cur_tile, rt)) : 0);
    01800             DirtyCompanyInfrastructureWindows(c->index);
    01801           }
    01802         }
    01803
    01804         MakeDriveThroughRoadStop(cur_tile, st->owner, road_owner, tram_owner, st->index, rs_type, rts | cur_rts, DiagDirToAxis(ddir));
    01805         road_stop->MakeDriveThrough();
    01806       } else {
    01807         /* Non-drive-through stop never overbuild and always count as two road bits. */
    01808         Company::Get(st->owner)->infrastructure.road[FIND_FIRST_BIT(rts)] += 2;
    01809         MakeRoadStop(cur_tile, st->owner, st->index, rs_type, rts, ddir);
    01810       }
    01811       Company::Get(st->owner)->infrastructure.station++;
    01812       DirtyCompanyInfrastructureWindows(st->owner);
    01813
    01814       MarkTileDirtyByTile(cur_tile);
    01815     }
    01816   }
    01817
    01818   if (st != NULL) {
    01819     st->UpdateVirtCoord();
    01820     UpdateStationAcceptance(st, false);
    01821     st->RecomputeIndustriesNear();
    01822     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01823     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01824     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ROADVEHS);
    01825   }
    01826   return cost;
    01827 }
    01828
    01829
    01830 static Vehicle *ClearRoadStopStatusEnum(Vehicle *v, void *)
    01831 {
    01832   if (v->type == VEH_ROAD) {
    01833     /* Okay... we are a road vehicle on a drive through road stop.
    01834      * But that road stop has just been removed, so we need to make
    01835      * sure we are in a valid state... however, vehicles can also
    01836      * turn on road stop tiles, so only clear the 'road stop' state
    01837      * bits and only when the state was 'in road stop', otherwise
    01838      * we'll end up clearing the turn around bits. */
    01839     RoadVehicle *rv = RoadVehicle::From(v);
    01840     if (HasBit(rv->state, RVS_IN_DT_ROAD_STOP)) rv->state &= RVSB_ROAD_STOP_TRACKDIR_MASK;
    01841   }
    01842
    01843   return NULL;
    01844 }
    01845
    01846
    01853 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags)
    01854 {
    01855   Station *st = Station::GetByTile(tile);
    01856
    01857   if (_current_company != OWNER_WATER) {
    01858     CommandCost ret = CheckOwnership(st->owner);
    01859     if (ret.Failed()) return ret;
    01860   }
    01861
    01862   bool is_truck = IsTruckStop(tile);
    01863
    01864   RoadStop **primary_stop;
    01865   RoadStop *cur_stop;
    01866   if (is_truck) { // truck stop
    01867     primary_stop = &st->truck_stops;
    01868     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_TRUCK);
    01869   } else {
    01870     primary_stop = &st->bus_stops;
    01871     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_BUS);
    01872   }
    01873
    01874   assert(cur_stop != NULL);
    01875
    01876   /* don't do the check for drive-through road stops when company bankrupts */
    01877   if (IsDriveThroughStopTile(tile) && (flags & DC_BANKRUPT)) {
    01878     /* remove the 'going through road stop' status from all vehicles on that tile */
    01879     if (flags & DC_EXEC) FindVehicleOnPos(tile, NULL, &ClearRoadStopStatusEnum);
    01880   } else {
    01881     CommandCost ret = EnsureNoVehicleOnGround(tile);
    01882     if (ret.Failed()) return ret;
    01883   }
    01884
    01885   if (flags & DC_EXEC) {
    01886     if (*primary_stop == cur_stop) {
    01887       /* removed the first stop in the list */
    01888       *primary_stop = cur_stop->next;
    01889       /* removed the only stop? */
    01890       if (*primary_stop == NULL) {
    01891         st->facilities &= (is_truck ? ~FACIL_TRUCK_STOP : ~FACIL_BUS_STOP);
    01892       }
    01893     } else {
    01894       /* tell the predecessor in the list to skip this stop */
    01895       RoadStop *pred = *primary_stop;
    01896       while (pred->next != cur_stop) pred = pred->next;
    01897       pred->next = cur_stop->next;
    01898     }
    01899
    01900     /* Update company infrastructure counts. */
    01901     RoadType rt;
    01902     FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(tile)) {
    01903       Company *c = Company::GetIfValid(GetRoadOwner(tile, rt));
    01904       if (c != NULL) {
    01905         c->infrastructure.road[rt] -= 2;
    01906         DirtyCompanyInfrastructureWindows(c->index);
    01907       }
    01908     }
    01909     Company::Get(st->owner)->infrastructure.station--;
    01910
    01911     if (IsDriveThroughStopTile(tile)) {
    01912       /* Clears the tile for us */
    01913       cur_stop->ClearDriveThrough();
    01914     } else {
    01915       DoClearSquare(tile);
    01916     }
    01917
    01918     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ROADVEHS);
    01919     delete cur_stop;
    01920
    01921     /* Make sure no vehicle is going to the old roadstop */
    01922     RoadVehicle *v;
    01923     FOR_ALL_ROADVEHICLES(v) {
    01924       if (v->First() == v && v->current_order.IsType(OT_GOTO_STATION) &&
    01925           v->dest_tile == tile) {
    01926         v->dest_tile = v->GetOrderStationLocation(st->index);
    01927       }
    01928     }
    01929
    01930     st->rect.AfterRemoveTile(st, tile);
    01931
    01932     st->UpdateVirtCoord();
    01933     st->RecomputeIndustriesNear();
    01934     DeleteStationIfEmpty(st);
    01935
    01936     /* Update the tile area of the truck/bus stop */
    01937     if (is_truck) {
    01938       st->truck_station.Clear();
    01939       for (const RoadStop *rs = st->truck_stops; rs != NULL; rs = rs->next) st->truck_station.Add(rs->xy);
    01940     } else {
    01941       st->bus_station.Clear();
    01942       for (const RoadStop *rs = st->bus_stops; rs != NULL; rs = rs->next) st->bus_station.Add(rs->xy);
    01943     }
    01944   }
    01945
    01946   return CommandCost(EXPENSES_CONSTRUCTION, _price[is_truck ? PR_CLEAR_STATION_TRUCK : PR_CLEAR_STATION_BUS]);
    01947 }
    01948
    01959 CommandCost CmdRemoveRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01960 {
    01961   uint8 width = (uint8)GB(p1, 0, 8);
    01962   uint8 height = (uint8)GB(p1, 8, 8);
    01963
    01964   /* Check for incorrect width / height. */
    01965   if (width == 0 || height == 0) return CMD_ERROR;
    01966   /* Check if the first tile and the last tile are valid */
    01967   if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, height - 1) == INVALID_TILE) return CMD_ERROR;
    01968
    01969   TileArea roadstop_area(tile, width, height);
    01970
    01971   int quantity = 0;
    01972   CommandCost cost(EXPENSES_CONSTRUCTION);
    01973   TILE_AREA_LOOP(cur_tile, roadstop_area) {
    01974     /* Make sure the specified tile is a road stop of the correct type */
    01975     if (!IsTileType(cur_tile, MP_STATION) || !IsRoadStop(cur_tile) || (uint32)GetRoadStopType(cur_tile) != GB(p2, 0, 1)) continue;
    01976
    01977     /* Save the stop info before it is removed */
    01978     bool is_drive_through = IsDriveThroughStopTile(cur_tile);
    01979     RoadTypes rts = GetRoadTypes(cur_tile);
    01980     RoadBits road_bits = IsDriveThroughStopTile(cur_tile) ?
    01981         ((GetRoadStopDir(cur_tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y) :
    01982         DiagDirToRoadBits(GetRoadStopDir(cur_tile));
    01983
    01984     Owner road_owner = GetRoadOwner(cur_tile, ROADTYPE_ROAD);
    01985     Owner tram_owner = GetRoadOwner(cur_tile, ROADTYPE_TRAM);
    01986     CommandCost ret = RemoveRoadStop(cur_tile, flags);
    01987     if (ret.Failed()) return ret;
    01988     cost.AddCost(ret);
    01989
    01990     quantity++;
    01991     /* If the stop was a drive-through stop replace the road */
    01992     if ((flags & DC_EXEC) && is_drive_through) {
    01993       MakeRoadNormal(cur_tile, road_bits, rts, ClosestTownFromTile(cur_tile, UINT_MAX)->index,
    01994           road_owner, tram_owner);
    01995
    01996       /* Update company infrastructure counts. */
    01997       RoadType rt;
    01998       FOR_EACH_SET_ROADTYPE(rt, rts) {
    01999         Company *c = Company::GetIfValid(GetRoadOwner(cur_tile, rt));
    02000         if (c != NULL) {
    02001           c->infrastructure.road[rt] += CountBits(road_bits);
    02002           DirtyCompanyInfrastructureWindows(c->index);
    02003         }
    02004       }
    02005     }
    02006   }
    02007
    02008   if (quantity == 0) return_cmd_error(STR_ERROR_THERE_IS_NO_STATION);
    02009
    02010   return cost;
    02011 }
    02012
    02019 static uint GetMinimalAirportDistanceToTile(TileIterator &it, TileIndex town_tile)
    02020 {
    02021   uint mindist = UINT_MAX;
    02022
    02023   for (TileIndex cur_tile = it; cur_tile != INVALID_TILE; cur_tile = ++it) {
    02024     mindist = min(mindist, DistanceManhattan(town_tile, cur_tile));
    02025   }
    02026
    02027   return mindist;
    02028 }
    02029
    02039 uint8 GetAirportNoiseLevelForTown(const AirportSpec *as, TileIterator &it, TileIndex town_tile)
    02040 {
    02041   /* 0 cannot be accounted, and 1 is the lowest that can be reduced from town.
    02042    * So no need to go any further*/
    02043   if (as->noise_level < 2) return as->noise_level;
    02044
    02045   uint distance = GetMinimalAirportDistanceToTile(it, town_tile);
    02046
    02047   /* The steps for measuring noise reduction are based on the "magical" (and arbitrary) 8 base distance
    02048    * adding the town_council_tolerance 4 times, as a way to graduate, depending of the tolerance.
    02049    * Basically, it says that the less tolerant a town is, the bigger the distance before
    02050    * an actual decrease can be granted */
    02051   uint8 town_tolerance_distance = 8 + (_settings_game.difficulty.town_council_tolerance * 4);
    02052
    02053   /* now, we want to have the distance segmented using the distance judged bareable by town
    02054    * This will give us the coefficient of reduction the distance provides. */
    02055   uint noise_reduction = distance / town_tolerance_distance;
    02056
    02057   /* If the noise reduction equals the airport noise itself, don't give it for free.
    02058    * Otherwise, simply reduce the airport's level. */
    02059   return noise_reduction >= as->noise_level ? 1 : as->noise_level - noise_reduction;
    02060 }
    02061
    02069 Town *AirportGetNearestTown(const AirportSpec *as, const TileIterator &it)
    02070 {
    02071   Town *t, *nearest = NULL;
    02072   uint add = as->size_x + as->size_y - 2; // GetMinimalAirportDistanceToTile can differ from DistanceManhattan by this much
    02073   uint mindist = UINT_MAX - add; // prevent overflow
    02074   FOR_ALL_TOWNS(t) {
    02075     if (DistanceManhattan(t->xy, it) < mindist + add) { // avoid calling GetMinimalAirportDistanceToTile too often
    02076       TileIterator *copy = it.Clone();
    02077       uint dist = GetMinimalAirportDistanceToTile(*copy, t->xy);
    02078       delete copy;
    02079       if (dist < mindist) {
    02080         nearest = t;
    02081         mindist = dist;
    02082       }
    02083     }
    02084   }
    02085
    02086   return nearest;
    02087 }
    02088
    02089
    02091 void UpdateAirportsNoise()
    02092 {
    02093   Town *t;
    02094   const Station *st;
    02095
    02096   FOR_ALL_TOWNS(t) t->noise_reached = 0;
    02097
    02098   FOR_ALL_STATIONS(st) {
    02099     if (st->airport.tile != INVALID_TILE && st->airport.type != AT_OILRIG) {
    02100       const AirportSpec *as = st->airport.GetSpec();
    02101       AirportTileIterator it(st);
    02102       Town *nearest = AirportGetNearestTown(as, it);
    02103       nearest->noise_reached += GetAirportNoiseLevelForTown(as, it, nearest->xy);
    02104     }
    02105   }
    02106 }
    02107
    02121 CommandCost CmdBuildAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02122 {
    02123   StationID station_to_join = GB(p2, 16, 16);
    02124   bool reuse = (station_to_join != NEW_STATION);
    02125   if (!reuse) station_to_join = INVALID_STATION;
    02126   bool distant_join = (station_to_join != INVALID_STATION);
    02127   byte airport_type = GB(p1, 0, 8);
    02128   byte layout = GB(p1, 8, 8);
    02129
    02130   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    02131
    02132   if (airport_type >= NUM_AIRPORTS) return CMD_ERROR;
    02133
    02134   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
    02135   if (ret.Failed()) return ret;
    02136
    02137   /* Check if a valid, buildable airport was chosen for construction */
    02138   const AirportSpec *as = AirportSpec::Get(airport_type);
    02139   if (!as->IsAvailable() || layout >= as->num_table) return CMD_ERROR;
    02140
    02141   Direction rotation = as->rotation[layout];
    02142   int w = as->size_x;
    02143   int h = as->size_y;
    02144   if (rotation == DIR_E || rotation == DIR_W) Swap(w, h);
    02145   TileArea airport_area = TileArea(tile, w, h);
    02146
    02147   if (w > _settings_game.station.station_spread || h > _settings_game.station.station_spread) {
    02148     return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
    02149   }
    02150
    02151   CommandCost cost = CheckFlatLand(airport_area, flags);
    02152   if (cost.Failed()) return cost;
    02153
    02154   /* The noise level is the noise from the airport and reduce it to account for the distance to the town center. */
    02155   AirportTileTableIterator iter(as->table[layout], tile);
    02156   Town *nearest = AirportGetNearestTown(as, iter);
    02157   uint newnoise_level = GetAirportNoiseLevelForTown(as, iter, nearest->xy);
    02158
    02159   /* Check if local auth would allow a new airport */
    02160   StringID authority_refuse_message = STR_NULL;
    02161   Town *authority_refuse_town = NULL;
    02162
    02163   if (_settings_game.economy.station_noise_level) {
    02164     /* do not allow to build a new airport if this raise the town noise over the maximum allowed by town */
    02165     if ((nearest->noise_reached + newnoise_level) > nearest->MaxTownNoise()) {
    02166       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_NOISE;
    02167       authority_refuse_town = nearest;
    02168     }
    02169   } else {
    02170     Town *t = ClosestTownFromTile(tile, UINT_MAX);
    02171     uint num = 0;
    02172     const Station *st;
    02173     FOR_ALL_STATIONS(st) {
    02174       if (st->town == t && (st->facilities & FACIL_AIRPORT) && st->airport.type != AT_OILRIG) num++;
    02175     }
    02176     if (num >= 2) {
    02177       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_AIRPORT;
    02178       authority_refuse_town = t;
    02179     }
    02180   }
    02181
    02182   if (authority_refuse_message != STR_NULL) {
    02183     SetDParam(0, authority_refuse_town->index);
    02184     return_cmd_error(authority_refuse_message);
    02185   }
    02186
    02187   Station *st = NULL;
    02188   ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 0), airport_area, &st);
    02189   if (ret.Failed()) return ret;
    02190
    02191   /* Distant join */
    02192   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    02193
    02194   ret = BuildStationPart(&st, flags, reuse, airport_area, (GetAirport(airport_type)->flags & AirportFTAClass::AIRPLANES) ? STATIONNAMING_AIRPORT : STATIONNAMING_HELIPORT);
    02195   if (ret.Failed()) return ret;
    02196
    02197   if (st != NULL && st->airport.tile != INVALID_TILE) {
    02198     return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_AIRPORT);
    02199   }
    02200
    02201   for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
    02202     cost.AddCost(_price[PR_BUILD_STATION_AIRPORT]);
    02203   }
    02204
    02205   if (flags & DC_EXEC) {
    02206     /* Always add the noise, so there will be no need to recalculate when option toggles */
    02207     nearest->noise_reached += newnoise_level;
    02208
    02209     st->AddFacility(FACIL_AIRPORT, tile);
    02210     st->airport.type = airport_type;
    02211     st->airport.layout = layout;
    02212     st->airport.flags = 0;
    02213     st->airport.rotation = rotation;
    02214
    02215     st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TRY);
    02216
    02217     for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
    02218       MakeAirport(iter, st->owner, st->index, iter.GetStationGfx(), WATER_CLASS_INVALID);
    02219       SetStationTileRandomBits(iter, GB(Random(), 0, 4));
    02220       st->airport.Add(iter);
    02221
    02222       if (AirportTileSpec::Get(GetTranslatedAirportTileID(iter.GetStationGfx()))->animation.status != ANIM_STATUS_NO_ANIMATION) AddAnimatedTile(iter);
    02223     }
    02224
    02225     /* Only call the animation trigger after all tiles have been built */
    02226     for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
    02227       AirportTileAnimationTrigger(st, iter, AAT_BUILT);
    02228     }
    02229
    02230     UpdateAirplanesOnNewStation(st);
    02231
    02232     Company::Get(st->owner)->infrastructure.airport++;
    02233     DirtyCompanyInfrastructureWindows(st->owner);
    02234
    02235     st->UpdateVirtCoord();
    02236     UpdateStationAcceptance(st, false);
    02237     st->RecomputeIndustriesNear();
    02238     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02239     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02240     InvalidateWindowData(WC_STATION_VIEW, st->index, -1);
    02241
    02242     if (_settings_game.economy.station_noise_level) {
    02243       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02244     }
    02245   }
    02246
    02247   return cost;
    02248 }
    02249
    02256 static CommandCost RemoveAirport(TileIndex tile, DoCommandFlag flags)
    02257 {
    02258   Station *st = Station::GetByTile(tile);
    02259
    02260   if (_current_company != OWNER_WATER) {
    02261     CommandCost ret = CheckOwnership(st->owner);
    02262     if (ret.Failed()) return ret;
    02263   }
    02264
    02265   tile = st->airport.tile;
    02266
    02267   CommandCost cost(EXPENSES_CONSTRUCTION);
    02268
    02269   const Aircraft *a;
    02270   FOR_ALL_AIRCRAFT(a) {
    02271     if (!a->IsNormalAircraft()) continue;
    02272     if (a->targetairport == st->index && a->state != FLYING) return CMD_ERROR;
    02273   }
    02274
    02275   if (flags & DC_EXEC) {
    02276     const AirportSpec *as = st->airport.GetSpec();
    02277     /* The noise level is the noise from the airport and reduce it to account for the distance to the town center.
    02278      * And as for construction, always remove it, even if the setting is not set, in order to avoid the
    02279      * need of recalculation */
    02280     AirportTileIterator it(st);
    02281     Town *nearest = AirportGetNearestTown(as, it);
    02282     nearest->noise_reached -= GetAirportNoiseLevelForTown(as, it, nearest->xy);
    02283   }
    02284
    02285   TILE_AREA_LOOP(tile_cur, st->airport) {
    02286     if (!st->TileBelongsToAirport(tile_cur)) continue;
    02287
    02288     CommandCost ret = EnsureNoVehicleOnGround(tile_cur);
    02289     if (ret.Failed()) return ret;
    02290
    02291     cost.AddCost(_price[PR_CLEAR_STATION_AIRPORT]);
    02292
    02293     if (flags & DC_EXEC) {
    02294       if (IsHangarTile(tile_cur)) OrderBackup::Reset(tile_cur, false);
    02295       DeleteAnimatedTile(tile_cur);
    02296       DoClearSquare(tile_cur);
    02297       DeleteNewGRFInspectWindow(GSF_AIRPORTTILES, tile_cur);
    02298     }
    02299   }
    02300
    02301   if (flags & DC_EXEC) {
    02302     /* Clear the persistent storage. */
    02303     delete st->airport.psa;
    02304
    02305     for (uint i = 0; i < st->airport.GetNumHangars(); ++i) {
    02306       DeleteWindowById(
    02307         WC_VEHICLE_DEPOT, st->airport.GetHangarTile(i)
    02308       );
    02309     }
    02310
    02311     st->rect.AfterRemoveRect(st, st->airport);
    02312
    02313     st->airport.Clear();
    02314     st->facilities &= ~FACIL_AIRPORT;
    02315
    02316     InvalidateWindowData(WC_STATION_VIEW, st->index, -1);
    02317
    02318     if (_settings_game.economy.station_noise_level) {
    02319       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02320     }
    02321
    02322     Company::Get(st->owner)->infrastructure.airport--;
    02323     DirtyCompanyInfrastructureWindows(st->owner);
    02324
    02325     st->UpdateVirtCoord();
    02326     st->RecomputeIndustriesNear();
    02327     DeleteStationIfEmpty(st);
    02328     DeleteNewGRFInspectWindow(GSF_AIRPORTS, st->index);
    02329   }
    02330
    02331   return cost;
    02332 }
    02333
    02343 CommandCost CmdOpenCloseAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02344 {
    02345   if (!Station::IsValidID(p1)) return CMD_ERROR;
    02346   Station *st = Station::Get(p1);
    02347
    02348   if (!(st->facilities & FACIL_AIRPORT) || st->owner == OWNER_NONE) return CMD_ERROR;
    02349
    02350   CommandCost ret = CheckOwnership(st->owner);
    02351   if (ret.Failed()) return ret;
    02352
    02353   if (flags & DC_EXEC) {
    02354     st->airport.flags ^= AIRPORT_CLOSED_block;
    02355     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_CLOSE_AIRPORT);
    02356   }
    02357   return CommandCost();
    02358 }
    02359
    02366 bool HasStationInUse(StationID station, bool include_company, CompanyID company)
    02367 {
    02368   const Vehicle *v;
    02369   FOR_ALL_VEHICLES(v) {
    02370     if ((v->owner == company) == include_company) {
    02371       const Order *order;
    02372       FOR_VEHICLE_ORDERS(v, order) {
    02373         if ((order->IsType(OT_GOTO_STATION) || order->IsType(OT_GOTO_WAYPOINT)) && order->GetDestination() == station) {
    02374           return true;
    02375         }
    02376       }
    02377     }
    02378   }
    02379   return false;
    02380 }
    02381
    02382 static const TileIndexDiffC _dock_tileoffs_chkaround[] = {
    02383   {-1,  0},
    02384   { 0,  0},
    02385   { 0,  0},
    02386   { 0, -1}
    02387 };
    02388 static const byte _dock_w_chk[4] = { 2, 1, 2, 1 };
    02389 static const byte _dock_h_chk[4] = { 1, 2, 1, 2 };
    02390
    02400 CommandCost CmdBuildDock(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02401 {
    02402   StationID station_to_join = GB(p2, 16, 16);
    02403   bool reuse = (station_to_join != NEW_STATION);
    02404   if (!reuse) station_to_join = INVALID_STATION;
    02405   bool distant_join = (station_to_join != INVALID_STATION);
    02406
    02407   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    02408
    02409   DiagDirection direction = GetInclinedSlopeDirection(GetTileSlope(tile));
    02410   if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02411   direction = ReverseDiagDir(direction);
    02412
    02413   /* Docks cannot be placed on rapids */
    02414   if (HasTileWaterGround(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02415
    02416   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
    02417   if (ret.Failed()) return ret;
    02418
    02419   if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02420
    02421   ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    02422   if (ret.Failed()) return ret;
    02423
    02424   TileIndex tile_cur = tile + TileOffsByDiagDir(direction);
    02425
    02426   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur) != SLOPE_FLAT) {
    02427     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02428   }
    02429
    02430   if (MayHaveBridgeAbove(tile_cur) && IsBridgeAbove(tile_cur)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02431
    02432   /* Get the water class of the water tile before it is cleared.*/
    02433   WaterClass wc = GetWaterClass(tile_cur);
    02434
    02435   ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    02436   if (ret.Failed()) return ret;
    02437
    02438   tile_cur += TileOffsByDiagDir(direction);
    02439   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur) != SLOPE_FLAT) {
    02440     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02441   }
    02442
    02443   TileArea dock_area = TileArea(tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02444       _dock_w_chk[direction], _dock_h_chk[direction]);
    02445
    02446   /* middle */
    02447   Station *st = NULL;
    02448   ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p1, 0), dock_area, &st);
    02449   if (ret.Failed()) return ret;
    02450
    02451   /* Distant join */
    02452   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    02453
    02454   ret = BuildStationPart(&st, flags, reuse, dock_area, STATIONNAMING_DOCK);
    02455   if (ret.Failed()) return ret;
    02456
    02457   if (st != NULL && st->dock_tile != INVALID_TILE) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_DOCK);
    02458
    02459   if (flags & DC_EXEC) {
    02460     st->dock_tile = tile;
    02461     st->AddFacility(FACIL_DOCK, tile);
    02462
    02463     st->rect.BeforeAddRect(dock_area.tile, dock_area.w, dock_area.h, StationRect::ADD_TRY);
    02464
    02465     /* If the water part of the dock is on a canal, update infrastructure counts.
    02466      * This is needed as we've unconditionally cleared that tile before. */
    02467     if (wc == WATER_CLASS_CANAL) {
    02468       Company::Get(st->owner)->infrastructure.water++;
    02469     }
    02470     Company::Get(st->owner)->infrastructure.station += 2;
    02471     DirtyCompanyInfrastructureWindows(st->owner);
    02472
    02473     MakeDock(tile, st->owner, st->index, direction, wc);
    02474
    02475     st->UpdateVirtCoord();
    02476     UpdateStationAcceptance(st, false);
    02477     st->RecomputeIndustriesNear();
    02478     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02479     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02480     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_SHIPS);
    02481   }
    02482
    02483   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_STATION_DOCK]);
    02484 }
    02485
    02492 static CommandCost RemoveDock(TileIndex tile, DoCommandFlag flags)
    02493 {
    02494   Station *st = Station::GetByTile(tile);
    02495   CommandCost ret = CheckOwnership(st->owner);
    02496   if (ret.Failed()) return ret;
    02497
    02498   TileIndex docking_location = TILE_ADD(st->dock_tile, ToTileIndexDiff(GetDockOffset(st->dock_tile)));
    02499
    02500   TileIndex tile1 = st->dock_tile;
    02501   TileIndex tile2 = tile1 + TileOffsByDiagDir(GetDockDirection(tile1));
    02502
    02503   ret = EnsureNoVehicleOnGround(tile1);
    02504   if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile2);
    02505   if (ret.Failed()) return ret;
    02506
    02507   if (flags & DC_EXEC) {
    02508     DoClearSquare(tile1);
    02509     MarkTileDirtyByTile(tile1);
    02510     MakeWaterKeepingClass(tile2, st->owner);
    02511
    02512     st->rect.AfterRemoveTile(st, tile1);
    02513     st->rect.AfterRemoveTile(st, tile2);
    02514
    02515     st->dock_tile = INVALID_TILE;
    02516     st->facilities &= ~FACIL_DOCK;
    02517
    02518     Company::Get(st->owner)->infrastructure.station -= 2;
    02519     DirtyCompanyInfrastructureWindows(st->owner);
    02520
    02521     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_SHIPS);
    02522     st->UpdateVirtCoord();
    02523     st->RecomputeIndustriesNear();
    02524     DeleteStationIfEmpty(st);
    02525
    02526     /* All ships that were going to our station, can't go to it anymore.
    02527      * Just clear the order, then automatically the next appropriate order
    02528      * will be selected and in case of no appropriate order it will just
    02529      * wander around the world. */
    02530     Ship *s;
    02531     FOR_ALL_SHIPS(s) {
    02532       if (s->current_order.IsType(OT_LOADING) && s->tile == docking_location) {
    02533         s->LeaveStation();
    02534       }
    02535
    02536       if (s->dest_tile == docking_location) {
    02537         s->dest_tile = 0;
    02538         s->current_order.Free();
    02539       }
    02540     }
    02541   }
    02542
    02543   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_STATION_DOCK]);
    02544 }
    02545
    02546 #include "table/station_land.h"
    02547
    02548 const DrawTileSprites *GetStationTileLayout(StationType st, byte gfx)
    02549 {
    02550   return &_station_display_datas[st][gfx];
    02551 }
    02552
    02562 static bool SplitGroundSpriteForOverlay(const TileInfo *ti, SpriteID *ground, RailTrackOffset *overlay_offset)
    02563 {
    02564   bool snow_desert;
    02565   switch (*ground) {
    02566     case SPR_RAIL_TRACK_X:
    02567       snow_desert = false;
    02568       *overlay_offset = RTO_X;
    02569       break;
    02570
    02571     case SPR_RAIL_TRACK_Y:
    02572       snow_desert = false;
    02573       *overlay_offset = RTO_Y;
    02574       break;
    02575
    02576     case SPR_RAIL_TRACK_X_SNOW:
    02577       snow_desert = true;
    02578       *overlay_offset = RTO_X;
    02579       break;
    02580
    02581     case SPR_RAIL_TRACK_Y_SNOW:
    02582       snow_desert = true;
    02583       *overlay_offset = RTO_Y;
    02584       break;
    02585
    02586     default:
    02587       return false;
    02588   }
    02589
    02590   if (ti != NULL) {
    02591     /* Decide snow/desert from tile */
    02592     switch (_settings_game.game_creation.landscape) {
    02593       case LT_ARCTIC:
    02594         snow_desert = (uint)ti->z > GetSnowLine() * TILE_HEIGHT;
    02595         break;
    02596
    02597       case LT_TROPIC:
    02598         snow_desert = GetTropicZone(ti->tile) == TROPICZONE_DESERT;
    02599         break;
    02600
    02601       default:
    02602         break;
    02603     }
    02604   }
    02605
    02606   *ground = snow_desert ? SPR_FLAT_SNOW_DESERT_TILE : SPR_FLAT_GRASS_TILE;
    02607   return true;
    02608 }
    02609
    02610 static void DrawTile_Station(TileInfo *ti)
    02611 {
    02612   const NewGRFSpriteLayout *layout = NULL;
    02613   DrawTileSprites tmp_rail_layout;
    02614   const DrawTileSprites *t = NULL;
    02615   RoadTypes roadtypes;
    02616   int32 total_offset;
    02617   const RailtypeInfo *rti = NULL;
    02618   uint32 relocation = 0;
    02619   uint32 ground_relocation = 0;
    02620   BaseStation *st = NULL;
    02621   const StationSpec *statspec = NULL;
    02622   uint tile_layout = 0;
    02623
    02624   if (HasStationRail(ti->tile)) {
    02625     rti = GetRailTypeInfo(GetRailType(ti->tile));
    02626     roadtypes = ROADTYPES_NONE;
    02627     total_offset = rti->GetRailtypeSpriteOffset();
    02628
    02629     if (IsCustomStationSpecIndex(ti->tile)) {
    02630       /* look for customization */
    02631       st = BaseStation::GetByTile(ti->tile);
    02632       statspec = st->speclist[GetCustomStationSpecIndex(ti->tile)].spec;
    02633
    02634       if (statspec != NULL) {
    02635         tile_layout = GetStationGfx(ti->tile);
    02636
    02637         if (HasBit(statspec->callback_mask, CBM_STATION_SPRITE_LAYOUT)) {
    02638           uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0, 0, statspec, st, ti->tile);
    02639           if (callback != CALLBACK_FAILED) tile_layout = (callback & ~1) + GetRailStationAxis(ti->tile);
    02640         }
    02641
    02642         /* Ensure the chosen tile layout is valid for this custom station */
    02643         if (statspec->renderdata != NULL) {
    02644           layout = &statspec->renderdata[tile_layout < statspec->tiles ? tile_layout : (uint)GetRailStationAxis(ti->tile)];
    02645           if (!layout->NeedsPreprocessing()) {
    02646             t = layout;
    02647             layout = NULL;
    02648           }
    02649         }
    02650       }
    02651     }
    02652   } else {
    02653     roadtypes = IsRoadStop(ti->tile) ? GetRoadTypes(ti->tile) : ROADTYPES_NONE;
    02654     total_offset = 0;
    02655   }
    02656
    02657   StationGfx gfx = GetStationGfx(ti->tile);
    02658   if (IsAirport(ti->tile)) {
    02659     gfx = GetAirportGfx(ti->tile);
    02660     if (gfx >= NEW_AIRPORTTILE_OFFSET) {
    02661       const AirportTileSpec *ats = AirportTileSpec::Get(gfx);
    02662       if (ats->grf_prop.spritegroup[0] != NULL && DrawNewAirportTile(ti, Station::GetByTile(ti->tile), gfx, ats)) {
    02663         return;
    02664       }
    02665       /* No sprite group (or no valid one) found, meaning no graphics associated.
    02666        * Use the substitute one instead */
    02667       assert(ats->grf_prop.subst_id != INVALID_AIRPORTTILE);
    02668       gfx = ats->grf_prop.subst_id;
    02669     }
    02670     switch (gfx) {
    02671       case APT_RADAR_GRASS_FENCE_SW:
    02672         t = &_station_display_datas_airport_radar_grass_fence_sw[GetAnimationFrame(ti->tile)];
    02673         break;
    02674       case APT_GRASS_FENCE_NE_FLAG:
    02675         t = &_station_display_datas_airport_flag_grass_fence_ne[GetAnimationFrame(ti->tile)];
    02676         break;
    02677       case APT_RADAR_FENCE_SW:
    02678         t = &_station_display_datas_airport_radar_fence_sw[GetAnimationFrame(ti->tile)];
    02679         break;
    02680       case APT_RADAR_FENCE_NE:
    02681         t = &_station_display_datas_airport_radar_fence_ne[GetAnimationFrame(ti->tile)];
    02682         break;
    02683       case APT_GRASS_FENCE_NE_FLAG_2:
    02684         t = &_station_display_datas_airport_flag_grass_fence_ne_2[GetAnimationFrame(ti->tile)];
    02685         break;
    02686     }
    02687   }
    02688
    02689   Owner owner = GetTileOwner(ti->tile);
    02690
    02691   PaletteID palette;
    02692   if (Company::IsValidID(owner)) {
    02693     palette = COMPANY_SPRITE_COLOUR(owner);
    02694   } else {
    02695     /* Some stations are not owner by a company, namely oil rigs */
    02696     palette = PALETTE_TO_GREY;
    02697   }
    02698
    02699   if (layout == NULL && (t == NULL || t->seq == NULL)) t = GetStationTileLayout(GetStationType(ti->tile), gfx);
    02700
    02701   /* don't show foundation for docks */
    02702   if (ti->tileh != SLOPE_FLAT && !IsDock(ti->tile)) {
    02703     if (statspec != NULL && HasBit(statspec->flags, SSF_CUSTOM_FOUNDATIONS)) {
    02704       /* Station has custom foundations.
    02705        * Check whether the foundation continues beyond the tile's upper sides. */
    02706       uint edge_info = 0;
    02707       int z;
    02708       Slope slope = GetFoundationPixelSlope(ti->tile, &z);
    02709       if (!HasFoundationNW(ti->tile, slope, z)) SetBit(edge_info, 0);
    02710       if (!HasFoundationNE(ti->tile, slope, z)) SetBit(edge_info, 1);
    02711       SpriteID image = GetCustomStationFoundationRelocation(statspec, st, ti->tile, tile_layout, edge_info);
    02712       if (image == 0) goto draw_default_foundation;
    02713
    02714       if (HasBit(statspec->flags, SSF_EXTENDED_FOUNDATIONS)) {
    02715         /* Station provides extended foundations. */
    02716
    02717         static const uint8 foundation_parts[] = {
    02718           0, 0, 0, 0, // Invalid,  Invalid,   Invalid,   SLOPE_SW
    02719           0, 1, 2, 3, // Invalid,  SLOPE_EW,  SLOPE_SE,  SLOPE_WSE
    02720           0, 4, 5, 6, // Invalid,  SLOPE_NW,  SLOPE_NS,  SLOPE_NWS
    02721           7, 8, 9     // SLOPE_NE, SLOPE_ENW, SLOPE_SEN
    02722         };
    02723
    02724         AddSortableSpriteToDraw(image + foundation_parts[ti->tileh], PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02725       } else {
    02726         /* Draw simple foundations, built up from 8 possible foundation sprites. */
    02727
    02728         /* Each set bit represents one of the eight composite sprites to be drawn.
    02729          * 'Invalid' entries will not drawn but are included for completeness. */
    02730         static const uint8 composite_foundation_parts[] = {
    02731           /* Invalid  (00000000), Invalid   (11010001), Invalid   (11100100), SLOPE_SW  (11100000) */
    02732              0x00,                0xD1,                 0xE4,                 0xE0,
    02733           /* Invalid  (11001010), SLOPE_EW  (11001001), SLOPE_SE  (11000100), SLOPE_WSE (11000000) */
    02734              0xCA,                0xC9,                 0xC4,                 0xC0,
    02735           /* Invalid  (11010010), SLOPE_NW  (10010001), SLOPE_NS  (11100100), SLOPE_NWS (10100000) */
    02736              0xD2,                0x91,                 0xE4,                 0xA0,
    02737           /* SLOPE_NE (01001010), SLOPE_ENW (00001001), SLOPE_SEN (01000100) */
    02738              0x4A,                0x09,                 0x44
    02739         };
    02740
    02741         uint8 parts = composite_foundation_parts[ti->tileh];
    02742
    02743         /* If foundations continue beyond the tile's upper sides then
    02744          * mask out the last two pieces. */
    02745         if (HasBit(edge_info, 0)) ClrBit(parts, 6);
    02746         if (HasBit(edge_info, 1)) ClrBit(parts, 7);
    02747
    02748         if (parts == 0) {
    02749           /* We always have to draw at least one sprite to make sure there is a boundingbox and a sprite with the
    02750            * correct offset for the childsprites.
    02751            * So, draw the (completely empty) sprite of the default foundations. */
    02752           goto draw_default_foundation;
    02753         }
    02754
    02755         StartSpriteCombine();
    02756         for (int i = 0; i < 8; i++) {
    02757           if (HasBit(parts, i)) {
    02758             AddSortableSpriteToDraw(image + i, PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02759           }
    02760         }
    02761         EndSpriteCombine();
    02762       }
    02763
    02764       OffsetGroundSprite(31, 1);
    02765       ti->z += ApplyPixelFoundationToSlope(FOUNDATION_LEVELED, &ti->tileh);
    02766     } else {
    02767 draw_default_foundation:
    02768       DrawFoundation(ti, FOUNDATION_LEVELED);
    02769     }
    02770   }
    02771
    02772   if (IsBuoy(ti->tile)) {
    02773     DrawWaterClassGround(ti);
    02774     SpriteID sprite = GetCanalSprite(CF_BUOY, ti->tile);
    02775     if (sprite != 0) total_offset = sprite - SPR_IMG_BUOY;
    02776   } else if (IsDock(ti->tile) || (IsOilRig(ti->tile) && IsTileOnWater(ti->tile))) {
    02777     if (ti->tileh == SLOPE_FLAT) {
    02778       DrawWaterClassGround(ti);
    02779     } else {
    02780       assert(IsDock(ti->tile));
    02781       TileIndex water_tile = ti->tile + TileOffsByDiagDir(GetDockDirection(ti->tile));
    02782       WaterClass wc = GetWaterClass(water_tile);
    02783       if (wc == WATER_CLASS_SEA) {
    02784         DrawShoreTile(ti->tileh);
    02785       } else {
    02786         DrawClearLandTile(ti, 3);
    02787       }
    02788     }
    02789   } else {
    02790     if (layout != NULL) {
    02791       /* Sprite layout which needs preprocessing */
    02792       bool separate_ground = HasBit(statspec->flags, SSF_SEPARATE_GROUND);
    02793       uint32 var10_values = layout->PrepareLayout(total_offset, rti->fallback_railtype, 0, 0, separate_ground);
    02794       uint8 var10;
    02795       FOR_EACH_SET_BIT(var10, var10_values) {
    02796         uint32 var10_relocation = GetCustomStationRelocation(statspec, st, ti->tile, var10);
    02797         layout->ProcessRegisters(var10, var10_relocation, separate_ground);
    02798       }
    02799       tmp_rail_layout.seq = layout->GetLayout(&tmp_rail_layout.ground);
    02800       t = &tmp_rail_layout;
    02801       total_offset = 0;
    02802     } else if (statspec != NULL) {
    02803       /* Simple sprite layout */
    02804       ground_relocation = relocation = GetCustomStationRelocation(statspec, st, ti->tile, 0);
    02805       if (HasBit(statspec->flags, SSF_SEPARATE_GROUND)) {
    02806         ground_relocation = GetCustomStationRelocation(statspec, st, ti->tile, 1);
    02807       }
    02808       ground_relocation += rti->fallback_railtype;
    02809     }
    02810
    02811     SpriteID image = t->ground.sprite;
    02812     PaletteID pal  = t->ground.pal;
    02813     RailTrackOffset overlay_offset;
    02814     if (rti != NULL && rti->UsesOverlay() && SplitGroundSpriteForOverlay(ti, &image, &overlay_offset)) {
    02815       SpriteID ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND);
    02816       DrawGroundSprite(image, PAL_NONE);
    02817       DrawGroundSprite(ground + overlay_offset, PAL_NONE);
    02818
    02819       if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationReservation(ti->tile)) {
    02820         SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
    02821         DrawGroundSprite(overlay + overlay_offset, PALETTE_CRASH);
    02822       }
    02823     } else {
    02824       image += HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? ground_relocation : total_offset;
    02825       if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += ground_relocation;
    02826       DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, palette));
    02827
    02828       /* PBS debugging, draw reserved tracks darker */
    02829       if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationRail(ti->tile) && HasStationReservation(ti->tile)) {
    02830         const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
    02831         DrawGroundSprite(GetRailStationAxis(ti->tile) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
    02832       }
    02833     }
    02834   }
    02835
    02836   if (HasStationRail(ti->tile) && HasCatenaryDrawn(GetRailType(ti->tile))) DrawCatenary(ti);
    02837
    02838   if (HasBit(roadtypes, ROADTYPE_TRAM)) {
    02839     Axis axis = GetRoadStopDir(ti->tile) == DIAGDIR_NE ? AXIS_X : AXIS_Y;
    02840     DrawGroundSprite((HasBit(roadtypes, ROADTYPE_ROAD) ? SPR_TRAMWAY_OVERLAY : SPR_TRAMWAY_TRAM) + (axis ^ 1), PAL_NONE);
    02841     DrawTramCatenary(ti, axis == AXIS_X ? ROAD_X : ROAD_Y);
    02842   }
    02843
    02844   if (IsRailWaypoint(ti->tile)) {
    02845     /* Don't offset the waypoint graphics; they're always the same. */
    02846     total_offset = 0;
    02847   }
    02848
    02849   DrawRailTileSeq(ti, t, TO_BUILDINGS, total_offset, relocation, palette);
    02850 }
    02851
    02852 void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, RoadType roadtype, int image)
    02853 {
    02854   int32 total_offset = 0;
    02855   PaletteID pal = COMPANY_SPRITE_COLOUR(_local_company);
    02856   const DrawTileSprites *t = GetStationTileLayout(st, image);
    02857   const RailtypeInfo *rti = NULL;
    02858
    02859   if (railtype != INVALID_RAILTYPE) {
    02860     rti = GetRailTypeInfo(railtype);
    02861     total_offset = rti->GetRailtypeSpriteOffset();
    02862   }
    02863
    02864   SpriteID img = t->ground.sprite;
    02865   RailTrackOffset overlay_offset;
    02866   if (rti != NULL && rti->UsesOverlay() && SplitGroundSpriteForOverlay(NULL, &img, &overlay_offset)) {
    02867     SpriteID ground = GetCustomRailSprite(rti, INVALID_TILE, RTSG_GROUND);
    02868     DrawSprite(img, PAL_NONE, x, y);
    02869     DrawSprite(ground + overlay_offset, PAL_NONE, x, y);
    02870   } else {
    02871     DrawSprite(img + total_offset, HasBit(img, PALETTE_MODIFIER_COLOUR) ? pal : PAL_NONE, x, y);
    02872   }
    02873
    02874   if (roadtype == ROADTYPE_TRAM) {
    02875     DrawSprite(SPR_TRAMWAY_TRAM + (t->ground.sprite == SPR_ROAD_PAVED_STRAIGHT_X ? 1 : 0), PAL_NONE, x, y);
    02876   }
    02877
    02878   /* Default waypoint has no railtype specific sprites */
    02879   DrawRailTileSeqInGUI(x, y, t, st == STATION_WAYPOINT ? 0 : total_offset, 0, pal);
    02880 }
    02881
    02882 static int GetSlopePixelZ_Station(TileIndex tile, uint x, uint y)
    02883 {
    02884   return GetTileMaxPixelZ(tile);
    02885 }
    02886
    02887 static Foundation GetFoundation_Station(TileIndex tile, Slope tileh)
    02888 {
    02889   return FlatteningFoundation(tileh);
    02890 }
    02891
    02892 static void GetTileDesc_Station(TileIndex tile, TileDesc *td)
    02893 {
    02894   td->owner[0] = GetTileOwner(tile);
    02895   if (IsDriveThroughStopTile(tile)) {
    02896     Owner road_owner = INVALID_OWNER;
    02897     Owner tram_owner = INVALID_OWNER;
    02898     RoadTypes rts = GetRoadTypes(tile);
    02899     if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    02900     if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    02901
    02902     /* Is there a mix of owners? */
    02903     if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
    02904         (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
    02905       uint i = 1;
    02906       if (road_owner != INVALID_OWNER) {
    02907         td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
    02908         td->owner[i] = road_owner;
    02909         i++;
    02910       }
    02911       if (tram_owner != INVALID_OWNER) {
    02912         td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
    02913         td->owner[i] = tram_owner;
    02914       }
    02915     }
    02916   }
    02917   td->build_date = BaseStation::GetByTile(tile)->build_date;
    02918
    02919   if (HasStationTileRail(tile)) {
    02920     const StationSpec *spec = GetStationSpec(tile);
    02921
    02922     if (spec != NULL) {
    02923       td->station_class = StationClass::Get(spec->cls_id)->name;
    02924       td->station_name  = spec->name;
    02925
    02926       if (spec->grf_prop.grffile != NULL) {
    02927         const GRFConfig *gc = GetGRFConfig(spec->grf_prop.grffile->grfid);
    02928         td->grf = gc->GetName();
    02929       }
    02930     }
    02931
    02932     const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
    02933     td->rail_speed = rti->max_speed;
    02934   }
    02935
    02936   if (IsAirport(tile)) {
    02937     const AirportSpec *as = Station::GetByTile(tile)->airport.GetSpec();
    02938     td->airport_class = AirportClass::Get(as->cls_id)->name;
    02939     td->airport_name = as->name;
    02940
    02941     const AirportTileSpec *ats = AirportTileSpec::GetByTile(tile);
    02942     td->airport_tile_name = ats->name;
    02943
    02944     if (as->grf_prop.grffile != NULL) {
    02945       const GRFConfig *gc = GetGRFConfig(as->grf_prop.grffile->grfid);
    02946       td->grf = gc->GetName();
    02947     } else if (ats->grf_prop.grffile != NULL) {
    02948       const GRFConfig *gc = GetGRFConfig(ats->grf_prop.grffile->grfid);
    02949       td->grf = gc->GetName();
    02950     }
    02951   }
    02952
    02953   StringID str;
    02954   switch (GetStationType(tile)) {
    02955     default: NOT_REACHED();
    02956     case STATION_RAIL:     str = STR_LAI_STATION_DESCRIPTION_RAILROAD_STATION; break;
    02957     case STATION_AIRPORT:
    02958       str = (IsHangar(tile) ? STR_LAI_STATION_DESCRIPTION_AIRCRAFT_HANGAR : STR_LAI_STATION_DESCRIPTION_AIRPORT);
    02959       break;
    02960     case STATION_TRUCK:    str = STR_LAI_STATION_DESCRIPTION_TRUCK_LOADING_AREA; break;
    02961     case STATION_BUS:      str = STR_LAI_STATION_DESCRIPTION_BUS_STATION; break;
    02962     case STATION_OILRIG:   str = STR_INDUSTRY_NAME_OIL_RIG; break;
    02963     case STATION_DOCK:     str = STR_LAI_STATION_DESCRIPTION_SHIP_DOCK; break;
    02964     case STATION_BUOY:     str = STR_LAI_STATION_DESCRIPTION_BUOY; break;
    02965     case STATION_WAYPOINT: str = STR_LAI_STATION_DESCRIPTION_WAYPOINT; break;
    02966   }
    02967   td->str = str;
    02968 }
    02969
    02970
    02971 static TrackStatus GetTileTrackStatus_Station(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
    02972 {
    02973   TrackBits trackbits = TRACK_BIT_NONE;
    02974
    02975   switch (mode) {
    02976     case TRANSPORT_RAIL:
    02977       if (HasStationRail(tile) && !IsStationTileBlocked(tile)) {
    02978         trackbits = TrackToTrackBits(GetRailStationTrack(tile));
    02979       }
    02980       break;
    02981
    02982     case TRANSPORT_WATER:
    02983       /* buoy is coded as a station, it is always on open water */
    02984       if (IsBuoy(tile)) {
    02985         trackbits = TRACK_BIT_ALL;
    02986         /* remove tracks that connect NE map edge */
    02987         if (TileX(tile) == 0) trackbits &= ~(TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_RIGHT);
    02988         /* remove tracks that connect NW map edge */
    02989         if (TileY(tile) == 0) trackbits &= ~(TRACK_BIT_Y | TRACK_BIT_LEFT | TRACK_BIT_UPPER);
    02990       }
    02991       break;
    02992
    02993     case TRANSPORT_ROAD:
    02994       if ((GetRoadTypes(tile) & sub_mode) != 0 && IsRoadStop(tile)) {
    02995         DiagDirection dir = GetRoadStopDir(tile);
    02996         Axis axis = DiagDirToAxis(dir);
    02997
    02998         if (side != INVALID_DIAGDIR) {
    02999           if (axis != DiagDirToAxis(side) || (IsStandardRoadStopTile(tile) && dir != side)) break;
    03000         }
    03001
    03002         trackbits = AxisToTrackBits(axis);
    03003       }
    03004       break;
    03005
    03006     default:
    03007       break;
    03008   }
    03009
    03010   return CombineTrackStatus(TrackBitsToTrackdirBits(trackbits), TRACKDIR_BIT_NONE);
    03011 }
    03012
    03013
    03014 static void TileLoop_Station(TileIndex tile)
    03015 {
    03016   /* FIXME -- GetTileTrackStatus_Station -> animated stationtiles
    03017    * hardcoded.....not good */
    03018   switch (GetStationType(tile)) {
    03019     case STATION_AIRPORT:
    03020       AirportTileAnimationTrigger(Station::GetByTile(tile), tile, AAT_TILELOOP);
    03021       break;
    03022
    03023     case STATION_DOCK:
    03024       if (GetTileSlope(tile) != SLOPE_FLAT) break; // only handle water part
    03025       /* FALL THROUGH */
    03026     case STATION_OILRIG: //(station part)
    03027     case STATION_BUOY:
    03028       TileLoop_Water(tile);
    03029       break;
    03030
    03031     default: break;
    03032   }
    03033 }
    03034
    03035
    03036 static void AnimateTile_Station(TileIndex tile)
    03037 {
    03038   if (HasStationRail(tile)) {
    03039     AnimateStationTile(tile);
    03040     return;
    03041   }
    03042
    03043   if (IsAirport(tile)) {
    03044     AnimateAirportTile(tile);
    03045   }
    03046 }
    03047
    03048
    03049 static bool ClickTile_Station(TileIndex tile)
    03050 {
    03051   const BaseStation *bst = BaseStation::GetByTile(tile);
    03052
    03053   if (bst->facilities & FACIL_WAYPOINT) {
    03054     ShowWaypointWindow(Waypoint::From(bst));
    03055   } else if (IsHangar(tile)) {
    03056     const Station *st = Station::From(bst);
    03057     ShowDepotWindow(st->airport.GetHangarTile(st->airport.GetHangarNum(tile)), VEH_AIRCRAFT);
    03058   } else {
    03059     ShowStationViewWindow(bst->index);
    03060   }
    03061   return true;
    03062 }
    03063
    03064 static VehicleEnterTileStatus VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
    03065 {
    03066   if (v->type == VEH_TRAIN) {
    03067     StationID station_id = GetStationIndex(tile);
    03068     if (!v->current_order.ShouldStopAtStation(v, station_id)) return VETSB_CONTINUE;
    03069     if (!IsRailStation(tile) || !v->IsFrontEngine()) return VETSB_CONTINUE;
    03070
    03071     int station_ahead;
    03072     int station_length;
    03073     int stop = GetTrainStopLocation(station_id, tile, Train::From(v), &station_ahead, &station_length);
    03074
    03075     /* Stop whenever that amount of station ahead + the distance from the
    03076      * begin of the platform to the stop location is longer than the length
    03077      * of the platform. Station ahead 'includes' the current tile where the
    03078      * vehicle is on, so we need to substract that. */
    03079     if (!IsInsideBS(stop + station_ahead, station_length, TILE_SIZE)) return VETSB_CONTINUE;
    03080
    03081     DiagDirection dir = DirToDiagDir(v->direction);
    03082
    03083     x &= 0xF;
    03084     y &= 0xF;
    03085
    03086     if (DiagDirToAxis(dir) != AXIS_X) Swap(x, y);
    03087     if (y == TILE_SIZE / 2) {
    03088       if (dir != DIAGDIR_SE && dir != DIAGDIR_SW) x = TILE_SIZE - 1 - x;
    03089       stop &= TILE_SIZE - 1;
    03090
    03091       if (x == stop) return VETSB_ENTERED_STATION | (VehicleEnterTileStatus)(station_id << VETS_STATION_ID_OFFSET); // enter station
    03092       if (x < stop) {
    03093         uint16 spd;
    03094
    03095         v->vehstatus |= VS_TRAIN_SLOWING;
    03096         spd = max(0, (stop - x) * 20 - 15);
    03097         if (spd < v->cur_speed) v->cur_speed = spd;
    03098       }
    03099     }
    03100   } else if (v->type == VEH_ROAD) {
    03101     RoadVehicle *rv = RoadVehicle::From(v);
    03102     if (rv->state < RVSB_IN_ROAD_STOP && !IsReversingRoadTrackdir((Trackdir)rv->state) && rv->frame == 0) {
    03103       if (IsRoadStop(tile) && rv->IsFrontEngine()) {
    03104         /* Attempt to allocate a parking bay in a road stop */
    03105         return RoadStop::GetByTile(tile, GetRoadStopType(tile))->Enter(rv) ? VETSB_CONTINUE : VETSB_CANNOT_ENTER;
    03106       }
    03107     }
    03108   }
    03109
    03110   return VETSB_CONTINUE;
    03111 }
    03112
    03117 void TriggerWatchedCargoCallbacks(Station *st)
    03118 {
    03119   /* Collect cargoes accepted since the last big tick. */
    03120   uint cargoes = 0;
    03121   for (CargoID cid = 0; cid < NUM_CARGO; cid++) {
    03122     if (HasBit(st->goods[cid].acceptance_pickup, GoodsEntry::GES_ACCEPTED_BIGTICK)) SetBit(cargoes, cid);
    03123   }
    03124
    03125   /* Anything to do? */
    03126   if (cargoes == 0) return;
    03127
    03128   /* Loop over all houses in the catchment. */
    03129   Rect r = st->GetCatchmentRect();
    03130   TileArea ta(TileXY(r.left, r.top), TileXY(r.right, r.bottom));
    03131   TILE_AREA_LOOP(tile, ta) {
    03132     if (IsTileType(tile, MP_HOUSE)) {
    03133       WatchedCargoCallback(tile, cargoes);
    03134     }
    03135   }
    03136 }
    03137
    03144 static bool StationHandleBigTick(BaseStation *st)
    03145 {
    03146   if (!st->IsInUse()) {
    03147     if (++st->delete_ctr >= 8) delete st;
    03148     return false;
    03149   }
    03150
    03151   if (Station::IsExpected(st)) {
    03152     TriggerWatchedCargoCallbacks(Station::From(st));
    03153
    03154     for (CargoID i = 0; i < NUM_CARGO; i++) {
    03155       ClrBit(Station::From(st)->goods[i].acceptance_pickup, GoodsEntry::GES_ACCEPTED_BIGTICK);
    03156     }
    03157   }
    03158
    03159
    03160   if ((st->facilities & FACIL_WAYPOINT) == 0) UpdateStationAcceptance(Station::From(st), true);
    03161
    03162   return true;
    03163 }
    03164
    03165 static inline void byte_inc_sat(byte *p)
    03166 {
    03167   byte b = *p + 1;
    03168   if (b != 0) *p = b;
    03169 }
    03170
    03171 static void UpdateStationRating(Station *st)
    03172 {
    03173   bool waiting_changed = false;
    03174
    03175   byte_inc_sat(&st->time_since_load);
    03176   byte_inc_sat(&st->time_since_unload);
    03177
    03178   const CargoSpec *cs;
    03179   FOR_ALL_CARGOSPECS(cs) {
    03180     GoodsEntry *ge = &st->goods[cs->Index()];
    03181     /* Slowly increase the rating back to his original level in the case we
    03182      *  didn't deliver cargo yet to this station. This happens when a bribe
    03183      *  failed while you didn't moved that cargo yet to a station. */
    03184     if (!HasBit(ge->acceptance_pickup, GoodsEntry::GES_PICKUP) && ge->rating < INITIAL_STATION_RATING) {
    03185       ge->rating++;
    03186     }
    03187
    03188     /* Only change the rating if we are moving this cargo */
    03189     if (HasBit(ge->acceptance_pickup, GoodsEntry::GES_PICKUP)) {
    03190       byte_inc_sat(&ge->time_since_pickup);
    03191
    03192       bool skip = false;
    03193       int rating = 0;
    03194       uint waiting = ge->cargo.Count();
    03195
    03196       /* num_dests is at least 1 if there is any cargo as
    03197        * INVALID_STATION is also a destination.
    03198        */
    03199       uint num_dests = (uint)ge->cargo.Packets()->MapSize();
    03200
    03201       /* Average amount of cargo per next hop, but prefer solitary stations
    03202        * with only one or two next hops. They are allowed to have more
    03203        * cargo waiting per next hop.
    03204        * With manual cargo distribution waiting_avg = waiting / 2 as then
    03205        * INVALID_STATION is the only destination.
    03206        */
    03207       uint waiting_avg = waiting / (num_dests + 1);
    03208
    03209       if (HasBit(cs->callback_mask, CBM_CARGO_STATION_RATING_CALC)) {
    03210         /* Perform custom station rating. If it succeeds the speed, days in transit and
    03211          * waiting cargo ratings must not be executed. */
    03212
    03213         /* NewGRFs expect last speed to be 0xFF when no vehicle has arrived yet. */
    03214         uint last_speed = ge->HasVehicleEverTriedLoading() ? ge->last_speed : 0xFF;
    03215
    03216         uint32 var18 = min(ge->time_since_pickup, 0xFF) | (min(ge->max_waiting_cargo, 0xFFFF) << 8) | (min(last_speed, 0xFF) << 24);
    03217         /* Convert to the 'old' vehicle types */
    03218         uint32 var10 = (st->last_vehicle_type == VEH_INVALID) ? 0x0 : (st->last_vehicle_type + 0x10);
    03219         uint16 callback = GetCargoCallback(CBID_CARGO_STATION_RATING_CALC, var10, var18, cs);
    03220         if (callback != CALLBACK_FAILED) {
    03221           skip = true;
    03222           rating = GB(callback, 0, 14);
    03223
    03224           /* Simulate a 15 bit signed value */
    03225           if (HasBit(callback, 14)) rating -= 0x4000;
    03226         }
    03227       }
    03228
    03229       if (!skip) {
    03230         int b = ge->last_speed - 85;
    03231         if (b >= 0) rating += b >> 2;
    03232
    03233         byte waittime = ge->time_since_pickup;
    03234         if (st->last_vehicle_type == VEH_SHIP) waittime >>= 2;
    03235         (waittime > 21) ||
    03236         (rating += 25, waittime > 12) ||
    03237         (rating += 25, waittime > 6) ||
    03238         (rating += 45, waittime > 3) ||
    03239         (rating += 35, true);
    03240
    03241         (rating -= 90, ge->max_waiting_cargo > 1500) ||
    03242         (rating += 55, ge->max_waiting_cargo > 1000) ||
    03243         (rating += 35, ge->max_waiting_cargo > 600) ||
    03244         (rating += 10, ge->max_waiting_cargo > 300) ||
    03245         (rating += 20, ge->max_waiting_cargo > 100) ||
    03246         (rating += 10, true);
    03247       }
    03248
    03249       if (Company::IsValidID(st->owner) && HasBit(st->town->statues, st->owner)) rating += 26;
    03250
    03251       byte age = ge->last_age;
    03252       (age >= 3) ||
    03253       (rating += 10, age >= 2) ||
    03254       (rating += 10, age >= 1) ||
    03255       (rating += 13, true);
    03256
    03257       {
    03258         int or_ = ge->rating; // old rating
    03259
    03260         /* only modify rating in steps of -2, -1, 0, 1 or 2 */
    03261         ge->rating = rating = or_ + Clamp(Clamp(rating, 0, 255) - or_, -2, 2);
    03262
    03263         /* if rating is <= 64 and more than 100 items waiting on average per destination,
    03264          * remove some random amount of goods from the station */
    03265         if (rating <= 64 && waiting_avg >= 100) {
    03266           int dec = Random() & 0x1F;
    03267           if (waiting_avg < 200) dec &= 7;
    03268           waiting -= (dec + 1) * num_dests;
    03269           waiting_changed = true;
    03270         }
    03271
    03272         /* if rating is <= 127 and there are any items waiting, maybe remove some goods. */
    03273         if (rating <= 127 && waiting != 0) {
    03274           uint32 r = Random();
    03275           if (rating <= (int)GB(r, 0, 7)) {
    03276             /* Need to have int, otherwise it will just overflow etc. */
    03277             waiting = max((int)waiting - (int)((GB(r, 8, 2) - 1) * num_dests), 0);
    03278             waiting_changed = true;
    03279           }
    03280         }
    03281
    03282         /* At some point we really must cap the cargo. Previously this
    03283          * was a strict 4095, but now we'll have a less strict, but
    03284          * increasingly agressive truncation of the amount of cargo. */
    03285         static const uint WAITING_CARGO_THRESHOLD  = 1 << 12;
    03286         static const uint WAITING_CARGO_CUT_FACTOR = 1 <<  6;
    03287         static const uint MAX_WAITING_CARGO        = 1 << 15;
    03288
    03289         if (waiting > WAITING_CARGO_THRESHOLD) {
    03290           uint difference = waiting - WAITING_CARGO_THRESHOLD;
    03291           waiting -= (difference / WAITING_CARGO_CUT_FACTOR);
    03292
    03293           waiting = min(waiting, MAX_WAITING_CARGO);
    03294           waiting_changed = true;
    03295         }
    03296
    03297         if (waiting_changed) {
    03298           /* feed back the exact own waiting cargo at this station for the
    03299            * next rating calculation.
    03300            */
    03301           ge->max_waiting_cargo = 0;
    03302
    03303           /* If truncating also punish the source stations' ratings to
    03304            * decrease the flow of incoming cargo. */
    03305
    03306           StationCargoAmountMap waiting_per_source;
    03307           ge->cargo.CountAndTruncate(waiting, waiting_per_source);
    03308           for (StationCargoAmountMap::iterator i(waiting_per_source.begin()); i != waiting_per_source.end(); ++i) {
    03309             Station *source_station = Station::GetIfValid(i->first);
    03310             if (source_station == NULL) continue;
    03311
    03312             GoodsEntry &source_ge = source_station->goods[cs->Index()];
    03313             source_ge.max_waiting_cargo = max(source_ge.max_waiting_cargo, i->second);
    03314           }
    03315         } else {
    03316           /* if the average number per next hop is low, be more forgiving. */
    03317           ge->max_waiting_cargo = waiting_avg;
    03318         }
    03319       }
    03320     }
    03321   }
    03322
    03323   StationID index = st->index;
    03324   if (waiting_changed) {
    03325     SetWindowDirty(WC_STATION_VIEW, index); // update whole window
    03326   } else {
    03327     SetWindowWidgetDirty(WC_STATION_VIEW, index, WID_SV_ACCEPT_RATING_LIST); // update only ratings list
    03328   }
    03329 }
    03330
    03337 void DeleteStaleFlows(StationID at, CargoID c_id, StationID to)
    03338 {
    03339   FlowStatMap &flows = Station::Get(at)->goods[c_id].flows;
    03340   for (FlowStatMap::iterator f_it = flows.begin(); f_it != flows.end();) {
    03341     FlowStat &s_flows = f_it->second;
    03342     s_flows.EraseShare(to);
    03343     if (s_flows.GetShares()->empty()) {
    03344       flows.erase(f_it++);
    03345     } else {
    03346       ++f_it;
    03347     }
    03348   }
    03349 }
    03350
    03357 uint GetMovingAverageLength(const Station *from, const Station *to)
    03358 {
    03359   return LinkStat::MIN_DISTANCE + (DistanceManhattan(from->xy, to->xy) >> 2);
    03360 }
    03361
    03365 void Station::RunAverages()
    03366 {
    03367   for (int goods_index = 0; goods_index < NUM_CARGO; ++goods_index) {
    03368     LinkStatMap &links = this->goods[goods_index].link_stats;
    03369     for (LinkStatMap::iterator i = links.begin(); i != links.end();) {
    03370       StationID id = i->first;
    03371       if (Station::IsValidID(id)) {
    03372         i->second.Decrease();
    03373         if (i->second.IsValid()) {
    03374           ++i;
    03375         } else {
    03376           DeleteStaleFlows(this->index, goods_index, id);
    03377           this->goods[goods_index].cargo.RerouteStalePackets(id);
    03378           links.erase(i++);
    03379         }
    03380       } else {
    03381         this->goods[goods_index].cargo.RerouteStalePackets(id);
    03382         links.erase(i++);
    03383       }
    03384     }
    03385
    03386     if (_settings_game.linkgraph.GetDistributionType(goods_index) == DT_MANUAL) {
    03387       this->goods[goods_index].flows.clear();
    03388     }
    03389   }
    03390 }
    03391
    03400 void IncreaseStats(Station *st, CargoID cargo, StationID next_station_id, uint capacity, uint usage)
    03401 {
    03402   LinkStatMap &stats = st->goods[cargo].link_stats;
    03403   LinkStatMap::iterator i = stats.find(next_station_id);
    03404   if (i == stats.end()) {
    03405     assert(st->index != next_station_id);
    03406     stats.insert(std::make_pair(next_station_id, LinkStat(
    03407         GetMovingAverageLength(st,
    03408         Station::Get(next_station_id)), capacity,
    03409         usage == UINT_MAX ? 0 : usage)));
    03410   } else {
    03411     if (usage == UINT_MAX) {
    03412       i->second.Refresh(capacity);
    03413     } else {
    03414       assert(capacity >= usage);
    03415       i->second.Increase(capacity, usage);
    03416     }
    03417     assert(i->second.IsValid());
    03418   }
    03419 }
    03420
    03427 void IncreaseStats(Station *st, const Vehicle *front, StationID next_station_id)
    03428 {
    03429   for (const Vehicle *v = front; v != NULL; v = v->Next()) {
    03430     if (v->refit_cap > 0) {
    03431       IncreaseStats(st, v->cargo_type, next_station_id, v->refit_cap, v->cargo.Count());
    03432     }
    03433   }
    03434 }
    03435
    03436 /* called for every station each tick */
    03437 static void StationHandleSmallTick(BaseStation *st)
    03438 {
    03439   if ((st->facilities & FACIL_WAYPOINT) != 0 || !st->IsInUse()) return;
    03440
    03441   byte b = st->delete_ctr + 1;
    03442   if (b >= STATION_RATING_TICKS) b = 0;
    03443   st->delete_ctr = b;
    03444
    03445   if (b == 0) UpdateStationRating(Station::From(st));
    03446 }
    03447
    03448 void OnTick_Station()
    03449 {
    03450   if (_game_mode == GM_EDITOR) return;
    03451
    03452   for (uint id = _tick_counter % DAY_TICKS; id < Station::GetPoolSize(); id += DAY_TICKS) {
    03453     Station *item = Station::GetIfValid(id);
    03454     if (item != NULL) item->RunAverages();
    03455   }
    03456
    03457   BaseStation *st;
    03458   FOR_ALL_BASE_STATIONS(st) {
    03459     StationHandleSmallTick(st);
    03460
    03461     /* Run STATION_ACCEPTANCE_TICKS = 250 tick interval trigger for station animation.
    03462      * Station index is included so that triggers are not all done
    03463      * at the same time. */
    03464     if ((_tick_counter + st->index) % STATION_ACCEPTANCE_TICKS == 0) {
    03465       /* Stop processing this station if it was deleted */
    03466       if (!StationHandleBigTick(st)) continue;
    03467       TriggerStationAnimation(st, st->xy, SAT_250_TICKS);
    03468       if (Station::IsExpected(st)) AirportAnimationTrigger(Station::From(st), AAT_STATION_250_TICKS);
    03469     }
    03470   }
    03471 }
    03472
    03474 void StationMonthlyLoop()
    03475 {
    03476   Station *st;
    03477
    03478   FOR_ALL_STATIONS(st) {
    03479     for (CargoID i = 0; i < NUM_CARGO; i++) {
    03480       GoodsEntry *ge = &st->goods[i];
    03481       SB(ge->acceptance_pickup, GoodsEntry::GES_LAST_MONTH, 1, GB(ge->acceptance_pickup, GoodsEntry::GES_CURRENT_MONTH, 1));
    03482       ClrBit(ge->acceptance_pickup, GoodsEntry::GES_CURRENT_MONTH);
    03483       ge->supply = ge->supply_new;
    03484       ge->supply_new = 0;
    03485     }
    03486   }
    03487 }
    03488
    03489
    03490 void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint radius)
    03491 {
    03492   Station *st;
    03493
    03494   FOR_ALL_STATIONS(st) {
    03495     if (st->owner == owner &&
    03496         DistanceManhattan(tile, st->xy) <= radius) {
    03497       for (CargoID i = 0; i < NUM_CARGO; i++) {
    03498         GoodsEntry *ge = &st->goods[i];
    03499
    03500         if (ge->acceptance_pickup != 0) {
    03501           ge->rating = Clamp(ge->rating + amount, 0, 255);
    03502         }
    03503       }
    03504     }
    03505   }
    03506 }
    03507
    03508 static uint UpdateStationWaiting(Station *st, CargoID type, uint amount, SourceType source_type, SourceID source_id)
    03509 {
    03510   /* We can't allocate a CargoPacket? Then don't do anything
    03511    * at all; i.e. just discard the incoming cargo. */
    03512   if (!CargoPacket::CanAllocateItem()) return 0;
    03513
    03514   GoodsEntry &ge = st->goods[type];
    03515   amount += ge.amount_fract;
    03516   ge.amount_fract = GB(amount, 0, 8);
    03517
    03518   amount >>= 8;
    03519   /* No new "real" cargo item yet. */
    03520   if (amount == 0) return 0;
    03521
    03522   StationID next = ge.GetVia(st->index);
    03523
    03524   ge.cargo.Append(next, new CargoPacket(st->index, st->xy, amount, source_type, source_id));
    03525   ge.supply_new += amount;
    03526
    03527   if (!HasBit(ge.acceptance_pickup, GoodsEntry::GES_PICKUP)) {
    03528     InvalidateWindowData(WC_STATION_LIST, st->index);
    03529     SetBit(ge.acceptance_pickup, GoodsEntry::GES_PICKUP);
    03530   }
    03531
    03532   TriggerStationAnimation(st, st->xy, SAT_NEW_CARGO, type);
    03533   AirportAnimationTrigger(st, AAT_STATION_NEW_CARGO, type);
    03534
    03535   SetWindowDirty(WC_STATION_VIEW, st->index);
    03536   st->MarkTilesDirty(true);
    03537   return amount;
    03538 }
    03539
    03540 static bool IsUniqueStationName(const char *name)
    03541 {
    03542   const Station *st;
    03543
    03544   FOR_ALL_STATIONS(st) {
    03545     if (st->name != NULL && strcmp(st->name, name) == 0) return false;
    03546   }
    03547
    03548   return true;
    03549 }
    03550
    03560 CommandCost CmdRenameStation(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    03561 {
    03562   Station *st = Station::GetIfValid(p1);
    03563   if (st == NULL) return CMD_ERROR;
    03564
    03565   CommandCost ret = CheckOwnership(st->owner);
    03566   if (ret.Failed()) return ret;
    03567
    03568   bool reset = StrEmpty(text);
    03569
    03570   if (!reset) {
    03571     if (Utf8StringLength(text) >= MAX_LENGTH_STATION_NAME_CHARS) return CMD_ERROR;
    03572     if (!IsUniqueStationName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
    03573   }
    03574
    03575   if (flags & DC_EXEC) {
    03576     free(st->name);
    03577     st->name = reset ? NULL : strdup(text);
    03578
    03579     st->UpdateVirtCoord();
    03580     InvalidateWindowData(WC_STATION_LIST, st->owner, 1);
    03581   }
    03582
    03583   return CommandCost();
    03584 }
    03585
    03592 void FindStationsAroundTiles(const TileArea &location, StationList *stations)
    03593 {
    03594   /* area to search = producer plus station catchment radius */
    03595   uint max_rad = (_settings_game.station.modified_catchment ? MAX_CATCHMENT : CA_UNMODIFIED);
    03596
    03597   uint x = TileX(location.tile);
    03598   uint y = TileY(location.tile);
    03599
    03600   uint min_x = (x > max_rad) ? x - max_rad : 0;
    03601   uint max_x = x + location.w + max_rad;
    03602   uint min_y = (y > max_rad) ? y - max_rad : 0;
    03603   uint max_y = y + location.h + max_rad;
    03604
    03605   if (min_x == 0 && _settings_game.construction.freeform_edges) min_x = 1;
    03606   if (min_y == 0 && _settings_game.construction.freeform_edges) min_y = 1;
    03607   if (max_x >= MapSizeX()) max_x = MapSizeX() - 1;
    03608   if (max_y >= MapSizeY()) max_y = MapSizeY() - 1;
    03609
    03610   for (uint cy = min_y; cy < max_y; cy++) {
    03611     for (uint cx = min_x; cx < max_x; cx++) {
    03612       TileIndex cur_tile = TileXY(cx, cy);
    03613       if (!IsTileType(cur_tile, MP_STATION)) continue;
    03614
    03615       Station *st = Station::GetByTile(cur_tile);
    03616       /* st can be NULL in case of waypoints */
    03617       if (st == NULL) continue;
    03618
    03619       if (_settings_game.station.modified_catchment) {
    03620         int rad = st->GetCatchmentRadius();
    03621         int rad_x = cx - x;
    03622         int rad_y = cy - y;
    03623
    03624         if (rad_x < -rad || rad_x >= rad + location.w) continue;
    03625         if (rad_y < -rad || rad_y >= rad + location.h) continue;
    03626       }
    03627
    03628       /* Insert the station in the set. This will fail if it has
    03629        * already been added.
    03630        */
    03631       stations->Include(st);
    03632     }
    03633   }
    03634 }
    03635
    03640 const StationList *StationFinder::GetStations()
    03641 {
    03642   if (this->tile != INVALID_TILE) {
    03643     FindStationsAroundTiles(*this, &this->stations);
    03644     this->tile = INVALID_TILE;
    03645   }
    03646   return &this->stations;
    03647 }
    03648
    03649 uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations)
    03650 {
    03651   /* Return if nothing to do. Also the rounding below fails for 0. */
    03652   if (amount == 0) return 0;
    03653
    03654   Station *st1 = NULL;   // Station with best rating
    03655   Station *st2 = NULL;   // Second best station
    03656   uint best_rating1 = 0; // rating of st1
    03657   uint best_rating2 = 0; // rating of st2
    03658
    03659   for (Station * const *st_iter = all_stations->Begin(); st_iter != all_stations->End(); ++st_iter) {
    03660     Station *st = *st_iter;
    03661
    03662     /* Is the station reserved exclusively for somebody else? */
    03663     if (st->town->exclusive_counter > 0 && st->town->exclusivity != st->owner) continue;
    03664
    03665     if (st->goods[type].rating == 0) continue; // Lowest possible rating, better not to give cargo anymore
    03666
    03667     if (_settings_game.order.selectgoods && !st->goods[type].HasVehicleEverTriedLoading()) continue; // Selectively servicing stations, and not this one
    03668
    03669     if (IsCargoInClass(type, CC_PASSENGERS)) {
    03670       if (st->facilities == FACIL_TRUCK_STOP) continue; // passengers are never served by just a truck stop
    03671     } else {
    03672       if (st->facilities == FACIL_BUS_STOP) continue; // non-passengers are never served by just a bus stop
    03673     }
    03674
    03675     /* This station can be used, add it to st1/st2 */
    03676     if (st1 == NULL || st->goods[type].rating >= best_rating1) {
    03677       st2 = st1; best_rating2 = best_rating1; st1 = st; best_rating1 = st->goods[type].rating;
    03678     } else if (st2 == NULL || st->goods[type].rating >= best_rating2) {
    03679       st2 = st; best_rating2 = st->goods[type].rating;
    03680     }
    03681   }
    03682
    03683   /* no stations around at all? */
    03684   if (st1 == NULL) return 0;
    03685
    03686   /* From now we'll calculate with fractal cargo amounts.
    03687    * First determine how much cargo we really have. */
    03688   amount *= best_rating1 + 1;
    03689
    03690   if (st2 == NULL) {
    03691     /* only one station around */
    03692     return UpdateStationWaiting(st1, type, amount, source_type, source_id);
    03693   }
    03694
    03695   /* several stations around, the best two (highest rating) are in st1 and st2 */
    03696   assert(st1 != NULL);
    03697   assert(st2 != NULL);
    03698   assert(best_rating1 != 0 || best_rating2 != 0);
    03699
    03700   /* Then determine the amount the worst station gets. We do it this way as the
    03701    * best should get a bonus, which in this case is the rounding difference from
    03702    * this calculation. In reality that will mean the bonus will be pretty low.
    03703    * Nevertheless, the best station should always get the most cargo regardless
    03704    * of rounding issues. */
    03705   uint worst_cargo = amount * best_rating2 / (best_rating1 + best_rating2);
    03706   assert(worst_cargo <= (amount - worst_cargo));
    03707
    03708   /* And then send the cargo to the stations! */
    03709   uint moved = UpdateStationWaiting(st1, type, amount - worst_cargo, source_type, source_id);
    03710   /* These two UpdateStationWaiting's can't be in the statement as then the order
    03711    * of execution would be undefined and that could cause desyncs with callbacks. */
    03712   return moved + UpdateStationWaiting(st2, type, worst_cargo, source_type, source_id);
    03713 }
    03714
    03715 void BuildOilRig(TileIndex tile)
    03716 {
    03717   if (!Station::CanAllocateItem()) {
    03718     DEBUG(misc, 0, "Can't allocate station for oilrig at 0x%X, reverting to oilrig only", tile);
    03719     return;
    03720   }
    03721
    03722   Station *st = new Station(tile);
    03723   st->town = ClosestTownFromTile(tile, UINT_MAX);
    03724
    03725   st->string_id = GenerateStationName(st, tile, STATIONNAMING_OILRIG);
    03726
    03727   assert(IsTileType(tile, MP_INDUSTRY));
    03728   DeleteAnimatedTile(tile);
    03729   MakeOilrig(tile, st->index, GetWaterClass(tile));
    03730
    03731   st->owner = OWNER_NONE;
    03732   st->airport.type = AT_OILRIG;
    03733   st->airport.Add(tile);
    03734   st->dock_tile = tile;
    03735   st->facilities = FACIL_AIRPORT | FACIL_DOCK;
    03736   st->build_date = _date;
    03737
    03738   st->rect.BeforeAddTile(tile, StationRect::ADD_FORCE);
    03739
    03740   st->UpdateVirtCoord();
    03741   UpdateStationAcceptance(st, false);
    03742   st->RecomputeIndustriesNear();
    03743 }
    03744
    03745 void DeleteOilRig(TileIndex tile)
    03746 {
    03747   Station *st = Station::GetByTile(tile);
    03748
    03749   MakeWaterKeepingClass(tile, OWNER_NONE);
    03750
    03751   st->dock_tile = INVALID_TILE;
    03752   st->airport.Clear();
    03753   st->facilities &= ~(FACIL_AIRPORT | FACIL_DOCK);
    03754   st->airport.flags = 0;
    03755
    03756   st->rect.AfterRemoveTile(st, tile);
    03757
    03758   st->UpdateVirtCoord();
    03759   st->RecomputeIndustriesNear();
    03760   if (!st->IsInUse()) delete st;
    03761 }
    03762
    03763 static void ChangeTileOwner_Station(TileIndex tile, Owner old_owner, Owner new_owner)
    03764 {
    03765   if (IsRoadStopTile(tile)) {
    03766     for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
    03767       /* Update all roadtypes, no matter if they are present */
    03768       if (GetRoadOwner(tile, rt) == old_owner) {
    03769         if (HasTileRoadType(tile, rt)) {
    03770           /* A drive-through road-stop has always two road bits. No need to dirty windows here, we'll redraw the whole screen anyway. */
    03771           Company::Get(old_owner)->infrastructure.road[rt] -= 2;
    03772           if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.road[rt] += 2;
    03773         }
    03774         SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
    03775       }
    03776     }
    03777   }
    03778
    03779   if (!IsTileOwner(tile, old_owner)) return;
    03780
    03781   if (new_owner != INVALID_OWNER) {
    03782     /* Update company infrastructure counts. Only do it here
    03783      * if the new owner is valid as otherwise the clear
    03784      * command will do it for us. No need to dirty windows
    03785      * here, we'll redraw the whole screen anyway.*/
    03786     Company *old_company = Company::Get(old_owner);
    03787     Company *new_company = Company::Get(new_owner);
    03788
    03789     /* Update counts for underlying infrastructure. */
    03790     switch (GetStationType(tile)) {
    03791       case STATION_RAIL:
    03792       case STATION_WAYPOINT:
    03793         if (!IsStationTileBlocked(tile)) {
    03794           old_company->infrastructure.rail[GetRailType(tile)]--;
    03795           new_company->infrastructure.rail[GetRailType(tile)]++;
    03796         }
    03797         break;
    03798
    03799       case STATION_BUS:
    03800       case STATION_TRUCK:
    03801         /* Road stops were already handled above. */
    03802         break;
    03803
    03804       case STATION_BUOY:
    03805       case STATION_DOCK:
    03806         if (GetWaterClass(tile) == WATER_CLASS_CANAL) {
    03807           old_company->infrastructure.water--;
    03808           new_company->infrastructure.water++;
    03809         }
    03810         break;
    03811
    03812       default:
    03813         break;
    03814     }
    03815
    03816     /* Update station tile count. */
    03817     if (!IsBuoy(tile) && !IsAirport(tile)) {
    03818       old_company->infrastructure.station--;
    03819       new_company->infrastructure.station++;
    03820     }
    03821
    03822     /* for buoys, owner of tile is owner of water, st->owner == OWNER_NONE */
    03823     SetTileOwner(tile, new_owner);
    03824     InvalidateWindowClassesData(WC_STATION_LIST, 0);
    03825   } else {
    03826     if (IsDriveThroughStopTile(tile)) {
    03827       /* Remove the drive-through road stop */
    03828       DoCommand(tile, 1 | 1 << 8, (GetStationType(tile) == STATION_TRUCK) ? ROADSTOP_TRUCK : ROADSTOP_BUS, DC_EXEC | DC_BANKRUPT, CMD_REMOVE_ROAD_STOP);
    03829       assert(IsTileType(tile, MP_ROAD));
    03830       /* Change owner of tile and all roadtypes */
    03831       ChangeTileOwner(tile, old_owner, new_owner);
    03832     } else {
    03833       DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
    03834       /* Set tile owner of water under (now removed) buoy and dock to OWNER_NONE.
    03835        * Update owner of buoy if it was not removed (was in orders).
    03836        * Do not update when owned by OWNER_WATER (sea and rivers). */
    03837       if ((IsTileType(tile, MP_WATER) || IsBuoyTile(tile)) && IsTileOwner(tile, old_owner)) SetTileOwner(tile, OWNER_NONE);
    03838     }
    03839   }
    03840 }
    03841
    03850 static bool CanRemoveRoadWithStop(TileIndex tile, DoCommandFlag flags)
    03851 {
    03852   /* Yeah... water can always remove stops, right? */
    03853   if (_current_company == OWNER_WATER) return true;
    03854
    03855   RoadTypes rts = GetRoadTypes(tile);
    03856   if (HasBit(rts, ROADTYPE_TRAM)) {
    03857     Owner tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    03858     if (tram_owner != OWNER_NONE && CheckOwnership(tram_owner).Failed()) return false;
    03859   }
    03860   if (HasBit(rts, ROADTYPE_ROAD)) {
    03861     Owner road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    03862     if (road_owner != OWNER_TOWN) {
    03863       if (road_owner != OWNER_NONE && CheckOwnership(road_owner).Failed()) return false;
    03864     } else {
    03865       if (CheckAllowRemoveRoad(tile, GetAnyRoadBits(tile, ROADTYPE_ROAD), OWNER_TOWN, ROADTYPE_ROAD, flags).Failed()) return false;
    03866     }
    03867   }
    03868
    03869   return true;
    03870 }
    03871
    03878 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags)
    03879 {
    03880   if (flags & DC_AUTO) {
    03881     switch (GetStationType(tile)) {
    03882       default: break;
    03883       case STATION_RAIL:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_RAILROAD);
    03884       case STATION_WAYPOINT: return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
    03885       case STATION_AIRPORT:  return_cmd_error(STR_ERROR_MUST_DEMOLISH_AIRPORT_FIRST);
    03886       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);
    03887       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);
    03888       case STATION_BUOY:     return_cmd_error(STR_ERROR_BUOY_IN_THE_WAY);
    03889       case STATION_DOCK:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_DOCK_FIRST);
    03890       case STATION_OILRIG:
    03891         SetDParam(1, STR_INDUSTRY_NAME_OIL_RIG);
    03892         return_cmd_error(STR_ERROR_GENERIC_OBJECT_IN_THE_WAY);
    03893     }
    03894   }
    03895
    03896   switch (GetStationType(tile)) {
    03897     case STATION_RAIL:     return RemoveRailStation(tile, flags);
    03898     case STATION_WAYPOINT: return RemoveRailWaypoint(tile, flags);
    03899     case STATION_AIRPORT:  return RemoveAirport(tile, flags);
    03900     case STATION_TRUCK:
    03901       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
    03902         return_cmd_error(STR_ERROR_MUST_DEMOLISH_TRUCK_STATION_FIRST);
    03903       }
    03904       return RemoveRoadStop(tile, flags);
    03905     case STATION_BUS:
    03906       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
    03907         return_cmd_error(STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST);
    03908       }
    03909       return RemoveRoadStop(tile, flags);
    03910     case STATION_BUOY:     return RemoveBuoy(tile, flags);
    03911     case STATION_DOCK:     return RemoveDock(tile, flags);
    03912     default: break;
    03913   }
    03914
    03915   return CMD_ERROR;
    03916 }
    03917
    03918 static CommandCost TerraformTile_Station(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
    03919 {
    03920   if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
    03921     /* TODO: If you implement newgrf callback 149 'land slope check', you have to decide what to do with it here.
    03922      *       TTDP does not call it.
    03923      */
    03924     if (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new)) {
    03925       switch (GetStationType(tile)) {
    03926         case STATION_WAYPOINT:
    03927         case STATION_RAIL: {
    03928           DiagDirection direction = AxisToDiagDir(GetRailStationAxis(tile));
    03929           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03930           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03931           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03932         }
    03933
    03934         case STATION_AIRPORT:
    03935           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03936
    03937         case STATION_TRUCK:
    03938         case STATION_BUS: {
    03939           DiagDirection direction = GetRoadStopDir(tile);
    03940           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03941           if (IsDriveThroughStopTile(tile)) {
    03942             if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03943           }
    03944           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03945         }
    03946
    03947         default: break;
    03948       }
    03949     }
    03950   }
    03951   return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    03952 }
    03953
    03959 uint FlowStat::GetShare(StationID st) const
    03960 {
    03961   uint32 prev = 0;
    03962   for (SharesMap::const_iterator it = this->shares.begin(); it != this->shares.end(); ++it) {
    03963     if (it->second == st) {
    03964       return it->first - prev;
    03965     } else {
    03966       prev = it->first;
    03967     }
    03968   }
    03969   return 0;
    03970 }
    03971
    03977 StationID FlowStat::GetVia(StationID excluded) const
    03978 {
    03979   assert(!this->shares.empty());
    03980   uint max = (--this->shares.end())->first - 1;
    03981   SharesMap::const_iterator it = this->shares.upper_bound(RandomRange(max));
    03982   assert(it != this->shares.end());
    03983   if (it->second != excluded) {
    03984     return it->second;
    03985   } else {
    03986     uint end = it->first;
    03987     if (end - 1 == max) return INVALID_STATION; // only one station in the map
    03988     uint begin = (it == this->shares.begin() ? 0 : (--it)->first);
    03989     uint rand = RandomRange(max - (end - begin));
    03990     if (rand < begin) {
    03991       return this->shares.upper_bound(rand)->second;
    03992     } else {
    03993       return this->shares.upper_bound(rand + (end - begin))->second;
    03994     }
    03995   }
    03996 }
    03997
    04002 void FlowStat::EraseShare(StationID st)
    04003 {
    04004   uint32 removed_shares = 0;
    04005   uint32 last_share = 0;
    04006   SharesMap new_shares;
    04007   for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
    04008     if (it->second == st) {
    04009       removed_shares += it->first - last_share;
    04010     } else {
    04011       new_shares[it->first - removed_shares] = it->second;
    04012     }
    04013     last_share = it->first;
    04014   }
    04015   this->shares.swap(new_shares);
    04016   for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
    04017     assert(it->second != st);
    04018   }
    04019 }
    04020
    04026 uint GoodsEntry::GetSumFlowVia(StationID via) const
    04027 {
    04028   uint ret = 0;
    04029   for (FlowStatMap::const_iterator i = this->flows.begin(); i != this->flows.end(); ++i) {
    04030     ret += i->second.GetShare(via);
    04031   }
    04032   return ret;
    04033 }
    04034
    04035 extern const TileTypeProcs _tile_type_station_procs = {
    04036   DrawTile_Station,           // draw_tile_proc
    04037   GetSlopePixelZ_Station,     // get_slope_z_proc
    04038   ClearTile_Station,          // clear_tile_proc
    04039   NULL,                       // add_accepted_cargo_proc
    04040   GetTileDesc_Station,        // get_tile_desc_proc
    04041   GetTileTrackStatus_Station, // get_tile_track_status_proc
    04042   ClickTile_Station,          // click_tile_proc
    04043   AnimateTile_Station,        // animate_tile_proc
    04044   TileLoop_Station,           // tile_loop_proc
    04045   ChangeTileOwner_Station,    // change_tile_owner_proc
    04046   NULL,                       // add_produced_cargo_proc
    04047   VehicleEnter_Station,       // vehicle_enter_tile_proc
    04048   GetFoundation_Station,      // get_foundation_proc
    04049   TerraformTile_Station,      // terraform_tile_proc
    04050 };