# 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 "moving_average.h"
    00049 #include "table/airporttile_ids.h"
    00050 #include "newgrf_airporttiles.h"
    00051 #include "order_backup.h"
    00052 #include "newgrf_house.h"
    00053 #include "company_gui.h"
    00054 #include "widgets/station_widget.h"
    00055
    00056 #include "table/strings.h"
    00057
    00064 bool IsHangar(TileIndex t)
    00065 {
    00066   assert(IsTileType(t, MP_STATION));
    00067
    00068   /* If the tile isn't an airport there's no chance it's a hangar. */
    00069   if (!IsAirport(t)) return false;
    00070
    00071   const Station *st = Station::GetByTile(t);
    00072   const AirportSpec *as = st->airport.GetSpec();
    00073
    00074   for (uint i = 0; i < as->nof_depots; i++) {
    00075     if (st->airport.GetHangarTile(i) == t) return true;
    00076   }
    00077
    00078   return false;
    00079 }
    00080
    00088 template <class T>
    00089 CommandCost GetStationAround(TileArea ta, StationID closest_station, T **st)
    00090 {
    00091   ta.tile -= TileDiffXY(1, 1);
    00092   ta.w    += 2;
    00093   ta.h    += 2;
    00094
    00095   /* check around to see if there's any stations there */
    00096   TILE_AREA_LOOP(tile_cur, ta) {
    00097     if (IsTileType(tile_cur, MP_STATION)) {
    00098       StationID t = GetStationIndex(tile_cur);
    00099       if (!T::IsValidID(t)) continue;
    00100
    00101       if (closest_station == INVALID_STATION) {
    00102         closest_station = t;
    00103       } else if (closest_station != t) {
    00104         return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00105       }
    00106     }
    00107   }
    00108   *st = (closest_station == INVALID_STATION) ? NULL : T::Get(closest_station);
    00109   return CommandCost();
    00110 }
    00111
    00117 typedef bool (*CMSAMatcher)(TileIndex tile);
    00118
    00125 static int CountMapSquareAround(TileIndex tile, CMSAMatcher cmp)
    00126 {
    00127   int num = 0;
    00128
    00129   for (int dx = -3; dx <= 3; dx++) {
    00130     for (int dy = -3; dy <= 3; dy++) {
    00131       TileIndex t = TileAddWrap(tile, dx, dy);
    00132       if (t != INVALID_TILE && cmp(t)) num++;
    00133     }
    00134   }
    00135
    00136   return num;
    00137 }
    00138
    00144 static bool CMSAMine(TileIndex tile)
    00145 {
    00146   /* No industry */
    00147   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00148
    00149   const Industry *ind = Industry::GetByTile(tile);
    00150
    00151   /* No extractive industry */
    00152   if ((GetIndustrySpec(ind->type)->life_type & INDUSTRYLIFE_EXTRACTIVE) == 0) return false;
    00153
    00154   for (uint i = 0; i < lengthof(ind->produced_cargo); i++) {
    00155     /* The industry extracts something non-liquid, i.e. no oil or plastic, so it is a mine.
    00156      * Also the production of passengers and mail is ignored. */
    00157     if (ind->produced_cargo[i] != CT_INVALID &&
    00158         (CargoSpec::Get(ind->produced_cargo[i])->classes & (CC_LIQUID | CC_PASSENGERS | CC_MAIL)) == 0) {
    00159       return true;
    00160     }
    00161   }
    00162
    00163   return false;
    00164 }
    00165
    00171 static bool CMSAWater(TileIndex tile)
    00172 {
    00173   return IsTileType(tile, MP_WATER) && IsWater(tile);
    00174 }
    00175
    00181 static bool CMSATree(TileIndex tile)
    00182 {
    00183   return IsTileType(tile, MP_TREES);
    00184 }
    00185
    00186 #define M(x) ((x) - STR_SV_STNAME)
    00187
    00188 enum StationNaming {
    00189   STATIONNAMING_RAIL,
    00190   STATIONNAMING_ROAD,
    00191   STATIONNAMING_AIRPORT,
    00192   STATIONNAMING_OILRIG,
    00193   STATIONNAMING_DOCK,
    00194   STATIONNAMING_HELIPORT,
    00195 };
    00196
    00198 struct StationNameInformation {
    00199   uint32 free_names;
    00200   bool *indtypes;
    00201 };
    00202
    00211 static bool FindNearIndustryName(TileIndex tile, void *user_data)
    00212 {
    00213   /* All already found industry types */
    00214   StationNameInformation *sni = (StationNameInformation*)user_data;
    00215   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00216
    00217   /* If the station name is undefined it means that it doesn't name a station */
    00218   IndustryType indtype = GetIndustryType(tile);
    00219   if (GetIndustrySpec(indtype)->station_name == STR_UNDEFINED) return false;
    00220
    00221   /* In all cases if an industry that provides a name is found two of
    00222    * the standard names will be disabled. */
    00223   sni->free_names &= ~(1 << M(STR_SV_STNAME_OILFIELD) | 1 << M(STR_SV_STNAME_MINES));
    00224   return !sni->indtypes[indtype];
    00225 }
    00226
    00227 static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming name_class)
    00228 {
    00229   static const uint32 _gen_station_name_bits[] = {
    00230     0,                                       // STATIONNAMING_RAIL
    00231     0,                                       // STATIONNAMING_ROAD
    00232     1U << M(STR_SV_STNAME_AIRPORT),          // STATIONNAMING_AIRPORT
    00233     1U << M(STR_SV_STNAME_OILFIELD),         // STATIONNAMING_OILRIG
    00234     1U << M(STR_SV_STNAME_DOCKS),            // STATIONNAMING_DOCK
    00235     1U << M(STR_SV_STNAME_HELIPORT),         // STATIONNAMING_HELIPORT
    00236   };
    00237
    00238   const Town *t = st->town;
    00239   uint32 free_names = UINT32_MAX;
    00240
    00241   bool indtypes[NUM_INDUSTRYTYPES];
    00242   memset(indtypes, 0, sizeof(indtypes));
    00243
    00244   const Station *s;
    00245   FOR_ALL_STATIONS(s) {
    00246     if (s != st && s->town == t) {
    00247       if (s->indtype != IT_INVALID) {
    00248         indtypes[s->indtype] = true;
    00249         continue;
    00250       }
    00251       uint str = M(s->string_id);
    00252       if (str <= 0x20) {
    00253         if (str == M(STR_SV_STNAME_FOREST)) {
    00254           str = M(STR_SV_STNAME_WOODS);
    00255         }
    00256         ClrBit(free_names, str);
    00257       }
    00258     }
    00259   }
    00260
    00261   TileIndex indtile = tile;
    00262   StationNameInformation sni = { free_names, indtypes };
    00263   if (CircularTileSearch(&indtile, 7, FindNearIndustryName, &sni)) {
    00264     /* An industry has been found nearby */
    00265     IndustryType indtype = GetIndustryType(indtile);
    00266     const IndustrySpec *indsp = GetIndustrySpec(indtype);
    00267     /* STR_NULL means it only disables oil rig/mines */
    00268     if (indsp->station_name != STR_NULL) {
    00269       st->indtype = indtype;
    00270       return STR_SV_STNAME_FALLBACK;
    00271     }
    00272   }
    00273
    00274   /* Oil rigs/mines name could be marked not free by looking for a near by industry. */
    00275   free_names = sni.free_names;
    00276
    00277   /* check default names */
    00278   uint32 tmp = free_names & _gen_station_name_bits[name_class];
    00279   if (tmp != 0) return STR_SV_STNAME + FindFirstBit(tmp);
    00280
    00281   /* check mine? */
    00282   if (HasBit(free_names, M(STR_SV_STNAME_MINES))) {
    00283     if (CountMapSquareAround(tile, CMSAMine) >= 2) {
    00284       return STR_SV_STNAME_MINES;
    00285     }
    00286   }
    00287
    00288   /* check close enough to town to get central as name? */
    00289   if (DistanceMax(tile, t->xy) < 8) {
    00290     if (HasBit(free_names, M(STR_SV_STNAME))) return STR_SV_STNAME;
    00291
    00292     if (HasBit(free_names, M(STR_SV_STNAME_CENTRAL))) return STR_SV_STNAME_CENTRAL;
    00293   }
    00294
    00295   /* Check lakeside */
    00296   if (HasBit(free_names, M(STR_SV_STNAME_LAKESIDE)) &&
    00297       DistanceFromEdge(tile) < 20 &&
    00298       CountMapSquareAround(tile, CMSAWater) >= 5) {
    00299     return STR_SV_STNAME_LAKESIDE;
    00300   }
    00301
    00302   /* Check woods */
    00303   if (HasBit(free_names, M(STR_SV_STNAME_WOODS)) && (
    00304         CountMapSquareAround(tile, CMSATree) >= 8 ||
    00305         CountMapSquareAround(tile, IsTileForestIndustry) >= 2)
    00306       ) {
    00307     return _settings_game.game_creation.landscape == LT_TROPIC ? STR_SV_STNAME_FOREST : STR_SV_STNAME_WOODS;
    00308   }
    00309
    00310   /* check elevation compared to town */
    00311   int z = GetTileZ(tile);
    00312   int z2 = GetTileZ(t->xy);
    00313   if (z < z2) {
    00314     if (HasBit(free_names, M(STR_SV_STNAME_VALLEY))) return STR_SV_STNAME_VALLEY;
    00315   } else if (z > z2) {
    00316     if (HasBit(free_names, M(STR_SV_STNAME_HEIGHTS))) return STR_SV_STNAME_HEIGHTS;
    00317   }
    00318
    00319   /* check direction compared to town */
    00320   static const int8 _direction_and_table[] = {
    00321     ~( (1 << M(STR_SV_STNAME_WEST))  | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00322     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00323     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00324     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_EAST)) ),
    00325   };
    00326
    00327   free_names &= _direction_and_table[
    00328     (TileX(tile) < TileX(t->xy)) +
    00329     (TileY(tile) < TileY(t->xy)) * 2];
    00330
    00331   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));
    00332   return (tmp == 0) ? STR_SV_STNAME_FALLBACK : (STR_SV_STNAME + FindFirstBit(tmp));
    00333 }
    00334 #undef M
    00335
    00341 static Station *GetClosestDeletedStation(TileIndex tile)
    00342 {
    00343   uint threshold = 8;
    00344   Station *best_station = NULL;
    00345   Station *st;
    00346
    00347   FOR_ALL_STATIONS(st) {
    00348     if (!st->IsInUse() && st->owner == _current_company) {
    00349       uint cur_dist = DistanceManhattan(tile, st->xy);
    00350
    00351       if (cur_dist < threshold) {
    00352         threshold = cur_dist;
    00353         best_station = st;
    00354       }
    00355     }
    00356   }
    00357
    00358   return best_station;
    00359 }
    00360
    00361
    00362 void Station::GetTileArea(TileArea *ta, StationType type) const
    00363 {
    00364   switch (type) {
    00365     case STATION_RAIL:
    00366       *ta = this->train_station;
    00367       return;
    00368
    00369     case STATION_AIRPORT:
    00370       *ta = this->airport;
    00371       return;
    00372
    00373     case STATION_TRUCK:
    00374       *ta = this->truck_station;
    00375       return;
    00376
    00377     case STATION_BUS:
    00378       *ta = this->bus_station;
    00379       return;
    00380
    00381     case STATION_DOCK:
    00382     case STATION_OILRIG:
    00383       ta->tile = this->dock_tile;
    00384       break;
    00385
    00386     default: NOT_REACHED();
    00387   }
    00388
    00389   ta->w = 1;
    00390   ta->h = 1;
    00391 }
    00392
    00396 void Station::UpdateVirtCoord()
    00397 {
    00398   Point pt = RemapCoords2(TileX(this->xy) * TILE_SIZE, TileY(this->xy) * TILE_SIZE);
    00399
    00400   pt.y -= 32 * ZOOM_LVL_BASE;
    00401   if ((this->facilities & FACIL_AIRPORT) && this->airport.type == AT_OILRIG) pt.y -= 16 * ZOOM_LVL_BASE;
    00402
    00403   SetDParam(0, this->index);
    00404   SetDParam(1, this->facilities);
    00405   this->sign.UpdatePosition(pt.x, pt.y, STR_VIEWPORT_STATION);
    00406
    00407   SetWindowDirty(WC_STATION_VIEW, this->index);
    00408 }
    00409
    00411 void UpdateAllStationVirtCoords()
    00412 {
    00413   BaseStation *st;
    00414
    00415   FOR_ALL_BASE_STATIONS(st) {
    00416     st->UpdateVirtCoord();
    00417   }
    00418 }
    00419
    00425 static uint GetAcceptanceMask(const Station *st)
    00426 {
    00427   uint mask = 0;
    00428
    00429   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00430     if (HasBit(st->goods[i].acceptance_pickup, GoodsEntry::GES_ACCEPTANCE)) mask |= 1 << i;
    00431   }
    00432   return mask;
    00433 }
    00434
    00439 static void ShowRejectOrAcceptNews(const Station *st, uint num_items, CargoID *cargo, StringID msg)
    00440 {
    00441   for (uint i = 0; i < num_items; i++) {
    00442     SetDParam(i + 1, CargoSpec::Get(cargo[i])->name);
    00443   }
    00444
    00445   SetDParam(0, st->index);
    00446   AddNewsItem(msg, NS_ACCEPTANCE, NR_STATION, st->index);
    00447 }
    00448
    00456 CargoArray GetProductionAroundTiles(TileIndex tile, int w, int h, int rad)
    00457 {
    00458   CargoArray produced;
    00459
    00460   int x = TileX(tile);
    00461   int y = TileY(tile);
    00462
    00463   /* expand the region by rad tiles on each side
    00464    * while making sure that we remain inside the board. */
    00465   int x2 = min(x + w + rad, MapSizeX());
    00466   int x1 = max(x - rad, 0);
    00467
    00468   int y2 = min(y + h + rad, MapSizeY());
    00469   int y1 = max(y - rad, 0);
    00470
    00471   assert(x1 < x2);
    00472   assert(y1 < y2);
    00473   assert(w > 0);
    00474   assert(h > 0);
    00475
    00476   TileArea ta(TileXY(x1, y1), TileXY(x2 - 1, y2 - 1));
    00477
    00478   /* Loop over all tiles to get the produced cargo of
    00479    * everything except industries */
    00480   TILE_AREA_LOOP(tile, ta) AddProducedCargo(tile, produced);
    00481
    00482   /* Loop over the industries. They produce cargo for
    00483    * anything that is within 'rad' from their bounding
    00484    * box. As such if you have e.g. a oil well the tile
    00485    * area loop might not hit an industry tile while
    00486    * the industry would produce cargo for the station.
    00487    */
    00488   const Industry *i;
    00489   FOR_ALL_INDUSTRIES(i) {
    00490     if (!ta.Intersects(i->location)) continue;
    00491
    00492     for (uint j = 0; j < lengthof(i->produced_cargo); j++) {
    00493       CargoID cargo = i->produced_cargo[j];
    00494       if (cargo != CT_INVALID) produced[cargo]++;
    00495     }
    00496   }
    00497
    00498   return produced;
    00499 }
    00500
    00509 CargoArray GetAcceptanceAroundTiles(TileIndex tile, int w, int h, int rad, uint32 *always_accepted)
    00510 {
    00511   CargoArray acceptance;
    00512   if (always_accepted != NULL) *always_accepted = 0;
    00513
    00514   int x = TileX(tile);
    00515   int y = TileY(tile);
    00516
    00517   /* expand the region by rad tiles on each side
    00518    * while making sure that we remain inside the board. */
    00519   int x2 = min(x + w + rad, MapSizeX());
    00520   int y2 = min(y + h + rad, MapSizeY());
    00521   int x1 = max(x - rad, 0);
    00522   int y1 = max(y - rad, 0);
    00523
    00524   assert(x1 < x2);
    00525   assert(y1 < y2);
    00526   assert(w > 0);
    00527   assert(h > 0);
    00528
    00529   for (int yc = y1; yc != y2; yc++) {
    00530     for (int xc = x1; xc != x2; xc++) {
    00531       TileIndex tile = TileXY(xc, yc);
    00532       AddAcceptedCargo(tile, acceptance, always_accepted);
    00533     }
    00534   }
    00535
    00536   return acceptance;
    00537 }
    00538
    00544 void UpdateStationAcceptance(Station *st, bool show_msg)
    00545 {
    00546   /* old accepted goods types */
    00547   uint old_acc = GetAcceptanceMask(st);
    00548
    00549   /* And retrieve the acceptance. */
    00550   CargoArray acceptance;
    00551   if (!st->rect.IsEmpty()) {
    00552     acceptance = GetAcceptanceAroundTiles(
    00553       TileXY(st->rect.left, st->rect.top),
    00554       st->rect.right  - st->rect.left + 1,
    00555       st->rect.bottom - st->rect.top  + 1,
    00556       st->GetCatchmentRadius(),
    00557       &st->always_accepted
    00558     );
    00559   }
    00560
    00561   /* Adjust in case our station only accepts fewer kinds of goods */
    00562   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00563     uint amt = min(acceptance[i], 15);
    00564
    00565     /* Make sure the station can accept the goods type. */
    00566     bool is_passengers = IsCargoInClass(i, CC_PASSENGERS);
    00567     if ((!is_passengers && !(st->facilities & ~FACIL_BUS_STOP)) ||
    00568         (is_passengers && !(st->facilities & ~FACIL_TRUCK_STOP))) {
    00569       amt = 0;
    00570     }
    00571
    00572     SB(st->goods[i].acceptance_pickup, GoodsEntry::GES_ACCEPTANCE, 1, amt >= 8);
    00573   }
    00574
    00575   /* Only show a message in case the acceptance was actually changed. */
    00576   uint new_acc = GetAcceptanceMask(st);
    00577   if (old_acc == new_acc) return;
    00578
    00579   /* show a message to report that the acceptance was changed? */
    00580   if (show_msg && st->owner == _local_company && st->IsInUse()) {
    00581     /* List of accept and reject strings for different number of
    00582      * cargo types */
    00583     static const StringID accept_msg[] = {
    00584       STR_NEWS_STATION_NOW_ACCEPTS_CARGO,
    00585       STR_NEWS_STATION_NOW_ACCEPTS_CARGO_AND_CARGO,
    00586     };
    00587     static const StringID reject_msg[] = {
    00588       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO,
    00589       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO_OR_CARGO,
    00590     };
    00591
    00592     /* Array of accepted and rejected cargo types */
    00593     CargoID accepts[2] = { CT_INVALID, CT_INVALID };
    00594     CargoID rejects[2] = { CT_INVALID, CT_INVALID };
    00595     uint num_acc = 0;
    00596     uint num_rej = 0;
    00597
    00598     /* Test each cargo type to see if its acceptange has changed */
    00599     for (CargoID i = 0; i < NUM_CARGO; i++) {
    00600       if (HasBit(new_acc, i)) {
    00601         if (!HasBit(old_acc, i) && num_acc < lengthof(accepts)) {
    00602           /* New cargo is accepted */
    00603           accepts[num_acc++] = i;
    00604         }
    00605       } else {
    00606         if (HasBit(old_acc, i) && num_rej < lengthof(rejects)) {
    00607           /* Old cargo is no longer accepted */
    00608           rejects[num_rej++] = i;
    00609         }
    00610       }
    00611     }
    00612
    00613     /* Show news message if there are any changes */
    00614     if (num_acc > 0) ShowRejectOrAcceptNews(st, num_acc, accepts, accept_msg[num_acc - 1]);
    00615     if (num_rej > 0) ShowRejectOrAcceptNews(st, num_rej, rejects, reject_msg[num_rej - 1]);
    00616   }
    00617
    00618   /* redraw the station view since acceptance changed */
    00619   SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ACCEPT_RATING_LIST);
    00620 }
    00621
    00622 static void UpdateStationSignCoord(BaseStation *st)
    00623 {
    00624   const StationRect *r = &st->rect;
    00625
    00626   if (r->IsEmpty()) return; // no tiles belong to this station
    00627
    00628   /* clamp sign coord to be inside the station rect */
    00629   st->xy = TileXY(ClampU(TileX(st->xy), r->left, r->right), ClampU(TileY(st->xy), r->top, r->bottom));
    00630   st->UpdateVirtCoord();
    00631 }
    00632
    00639 static void DeleteStationIfEmpty(BaseStation *st)
    00640 {
    00641   if (!st->IsInUse()) {
    00642     st->delete_ctr = 0;
    00643     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    00644   }
    00645   /* station remains but it probably lost some parts - station sign should stay in the station boundaries */
    00646   UpdateStationSignCoord(st);
    00647 }
    00648
    00649 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags);
    00650
    00660 CommandCost CheckBuildableTile(TileIndex tile, uint invalid_dirs, int &allowed_z, bool allow_steep, bool check_bridge = true)
    00661 {
    00662   if (check_bridge && MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) {
    00663     return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    00664   }
    00665
    00666   CommandCost ret = EnsureNoVehicleOnGround(tile);
    00667   if (ret.Failed()) return ret;
    00668
    00669   int z;
    00670   Slope tileh = GetTileSlope(tile, &z);
    00671
    00672   /* Prohibit building if
    00673    *   1) The tile is "steep" (i.e. stretches two height levels).
    00674    *   2) The tile is non-flat and the build_on_slopes switch is disabled.
    00675    */
    00676   if ((!allow_steep && IsSteepSlope(tileh)) ||
    00677       ((!_settings_game.construction.build_on_slopes) && tileh != SLOPE_FLAT)) {
    00678     return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00679   }
    00680
    00681   CommandCost cost(EXPENSES_CONSTRUCTION);
    00682   int flat_z = z + GetSlopeMaxZ(tileh);
    00683   if (tileh != SLOPE_FLAT) {
    00684     /* Forbid building if the tile faces a slope in a invalid direction. */
    00685     for (DiagDirection dir = DIAGDIR_BEGIN; dir != DIAGDIR_END; dir++) {
    00686       if (HasBit(invalid_dirs, dir) && !CanBuildDepotByTileh(dir, tileh)) {
    00687         return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00688       }
    00689     }
    00690     cost.AddCost(_price[PR_BUILD_FOUNDATION]);
    00691   }
    00692
    00693   /* The level of this tile must be equal to allowed_z. */
    00694   if (allowed_z < 0) {
    00695     /* First tile. */
    00696     allowed_z = flat_z;
    00697   } else if (allowed_z != flat_z) {
    00698     return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00699   }
    00700
    00701   return cost;
    00702 }
    00703
    00710 CommandCost CheckFlatLand(TileArea tile_area, DoCommandFlag flags)
    00711 {
    00712   CommandCost cost(EXPENSES_CONSTRUCTION);
    00713   int allowed_z = -1;
    00714
    00715   TILE_AREA_LOOP(tile_cur, tile_area) {
    00716     CommandCost ret = CheckBuildableTile(tile_cur, 0, allowed_z, true);
    00717     if (ret.Failed()) return ret;
    00718     cost.AddCost(ret);
    00719
    00720     ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00721     if (ret.Failed()) return ret;
    00722     cost.AddCost(ret);
    00723   }
    00724
    00725   return cost;
    00726 }
    00727
    00742 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)
    00743 {
    00744   CommandCost cost(EXPENSES_CONSTRUCTION);
    00745   int allowed_z = -1;
    00746   uint invalid_dirs = 5 << axis;
    00747
    00748   const StationSpec *statspec = StationClass::Get(spec_class, spec_index);
    00749   bool slope_cb = statspec != NULL && HasBit(statspec->callback_mask, CBM_STATION_SLOPE_CHECK);
    00750
    00751   TILE_AREA_LOOP(tile_cur, tile_area) {
    00752     CommandCost ret = CheckBuildableTile(tile_cur, invalid_dirs, allowed_z, false);
    00753     if (ret.Failed()) return ret;
    00754     cost.AddCost(ret);
    00755
    00756     if (slope_cb) {
    00757       /* Do slope check if requested. */
    00758       ret = PerformStationTileSlopeCheck(tile_area.tile, tile_cur, statspec, axis, plat_len, numtracks);
    00759       if (ret.Failed()) return ret;
    00760     }
    00761
    00762     /* if station is set, then we have special handling to allow building on top of already existing stations.
    00763      * so station points to INVALID_STATION if we can build on any station.
    00764      * Or it points to a station if we're only allowed to build on exactly that station. */
    00765     if (station != NULL && IsTileType(tile_cur, MP_STATION)) {
    00766       if (!IsRailStation(tile_cur)) {
    00767         return ClearTile_Station(tile_cur, DC_AUTO); // get error message
    00768       } else {
    00769         StationID st = GetStationIndex(tile_cur);
    00770         if (*station == INVALID_STATION) {
    00771           *station = st;
    00772         } else if (*station != st) {
    00773           return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00774         }
    00775       }
    00776     } else {
    00777       /* Rail type is only valid when building a railway station; if station to
    00778        * build isn't a rail station it's INVALID_RAILTYPE. */
    00779       if (rt != INVALID_RAILTYPE &&
    00780           IsPlainRailTile(tile_cur) && !HasSignals(tile_cur) &&
    00781           HasPowerOnRail(GetRailType(tile_cur), rt)) {
    00782         /* Allow overbuilding if the tile:
    00783          *  - has rail, but no signals
    00784          *  - it has exactly one track
    00785          *  - the track is in line with the station
    00786          *  - the current rail type has power on the to-be-built type (e.g. convert normal rail to el rail)
    00787          */
    00788         TrackBits tracks = GetTrackBits(tile_cur);
    00789         Track track = RemoveFirstTrack(&tracks);
    00790         Track expected_track = HasBit(invalid_dirs, DIAGDIR_NE) ? TRACK_X : TRACK_Y;
    00791
    00792         if (tracks == TRACK_BIT_NONE && track == expected_track) {
    00793           /* Check for trains having a reservation for this tile. */
    00794           if (HasBit(GetRailReservationTrackBits(tile_cur), track)) {
    00795             Train *v = GetTrainForReservation(tile_cur, track);
    00796             if (v != NULL) {
    00797               *affected_vehicles.Append() = v;
    00798             }
    00799           }
    00800           CommandCost ret = DoCommand(tile_cur, 0, track, flags, CMD_REMOVE_SINGLE_RAIL);
    00801           if (ret.Failed()) return ret;
    00802           cost.AddCost(ret);
    00803           /* With flags & ~DC_EXEC CmdLandscapeClear would fail since the rail still exists */
    00804           continue;
    00805         }
    00806       }
    00807       ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00808       if (ret.Failed()) return ret;
    00809       cost.AddCost(ret);
    00810     }
    00811   }
    00812
    00813   return cost;
    00814 }
    00815
    00828 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)
    00829 {
    00830   CommandCost cost(EXPENSES_CONSTRUCTION);
    00831   int allowed_z = -1;
    00832
    00833   TILE_AREA_LOOP(cur_tile, tile_area) {
    00834     CommandCost ret = CheckBuildableTile(cur_tile, invalid_dirs, allowed_z, !is_drive_through);
    00835     if (ret.Failed()) return ret;
    00836     cost.AddCost(ret);
    00837
    00838     /* If station is set, then we have special handling to allow building on top of already existing stations.
    00839      * Station points to INVALID_STATION if we can build on any station.
    00840      * Or it points to a station if we're only allowed to build on exactly that station. */
    00841     if (station != NULL && IsTileType(cur_tile, MP_STATION)) {
    00842       if (!IsRoadStop(cur_tile)) {
    00843         return ClearTile_Station(cur_tile, DC_AUTO); // Get error message.
    00844       } else {
    00845         if (is_truck_stop != IsTruckStop(cur_tile) ||
    00846             is_drive_through != IsDriveThroughStopTile(cur_tile)) {
    00847           return ClearTile_Station(cur_tile, DC_AUTO); // Get error message.
    00848         }
    00849         /* Drive-through station in the wrong direction. */
    00850         if (is_drive_through && IsDriveThroughStopTile(cur_tile) && DiagDirToAxis(GetRoadStopDir(cur_tile)) != axis){
    00851           return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    00852         }
    00853         StationID st = GetStationIndex(cur_tile);
    00854         if (*station == INVALID_STATION) {
    00855           *station = st;
    00856         } else if (*station != st) {
    00857           return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00858         }
    00859       }
    00860     } else {
    00861       bool build_over_road = is_drive_through && IsNormalRoadTile(cur_tile);
    00862       /* Road bits in the wrong direction. */
    00863       RoadBits rb = IsNormalRoadTile(cur_tile) ? GetAllRoadBits(cur_tile) : ROAD_NONE;
    00864       if (build_over_road && (rb & (axis == AXIS_X ? ROAD_Y : ROAD_X)) != 0) {
    00865         /* Someone was pedantic and *NEEDED* three fracking different error messages. */
    00866         switch (CountBits(rb)) {
    00867           case 1:
    00868             return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    00869
    00870           case 2:
    00871             if (rb == ROAD_X || rb == ROAD_Y) return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    00872             return_cmd_error(STR_ERROR_DRIVE_THROUGH_CORNER);
    00873
    00874           default: // 3 or 4
    00875             return_cmd_error(STR_ERROR_DRIVE_THROUGH_JUNCTION);
    00876         }
    00877       }
    00878
    00879       RoadTypes cur_rts = IsNormalRoadTile(cur_tile) ? GetRoadTypes(cur_tile) : ROADTYPES_NONE;
    00880       uint num_roadbits = 0;
    00881       if (build_over_road) {
    00882         /* There is a road, check if we can build road+tram stop over it. */
    00883         if (HasBit(cur_rts, ROADTYPE_ROAD)) {
    00884           Owner road_owner = GetRoadOwner(cur_tile, ROADTYPE_ROAD);
    00885           if (road_owner == OWNER_TOWN) {
    00886             if (!_settings_game.construction.road_stop_on_town_road) return_cmd_error(STR_ERROR_DRIVE_THROUGH_ON_TOWN_ROAD);
    00887           } else if (!_settings_game.construction.road_stop_on_competitor_road && road_owner != OWNER_NONE) {
    00888             CommandCost ret = CheckOwnership(road_owner);
    00889             if (ret.Failed()) return ret;
    00890           }
    00891           num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_ROAD));
    00892         }
    00893
    00894         /* There is a tram, check if we can build road+tram stop over it. */
    00895         if (HasBit(cur_rts, ROADTYPE_TRAM)) {
    00896           Owner tram_owner = GetRoadOwner(cur_tile, ROADTYPE_TRAM);
    00897           if (!_settings_game.construction.road_stop_on_competitor_road && tram_owner != OWNER_NONE) {
    00898             CommandCost ret = CheckOwnership(tram_owner);
    00899             if (ret.Failed()) return ret;
    00900           }
    00901           num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_TRAM));
    00902         }
    00903
    00904         /* Take into account existing roadbits. */
    00905         rts |= cur_rts;
    00906       } else {
    00907         ret = DoCommand(cur_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00908         if (ret.Failed()) return ret;
    00909         cost.AddCost(ret);
    00910       }
    00911
    00912       uint roadbits_to_build = CountBits(rts) * 2 - num_roadbits;
    00913       cost.AddCost(_price[PR_BUILD_ROAD] * roadbits_to_build);
    00914     }
    00915   }
    00916
    00917   return cost;
    00918 }
    00919
    00927 CommandCost CanExpandRailStation(const BaseStation *st, TileArea &new_ta, Axis axis)
    00928 {
    00929   TileArea cur_ta = st->train_station;
    00930
    00931   /* determine new size of train station region.. */
    00932   int x = min(TileX(cur_ta.tile), TileX(new_ta.tile));
    00933   int y = min(TileY(cur_ta.tile), TileY(new_ta.tile));
    00934   new_ta.w = max(TileX(cur_ta.tile) + cur_ta.w, TileX(new_ta.tile) + new_ta.w) - x;
    00935   new_ta.h = max(TileY(cur_ta.tile) + cur_ta.h, TileY(new_ta.tile) + new_ta.h) - y;
    00936   new_ta.tile = TileXY(x, y);
    00937
    00938   /* make sure the final size is not too big. */
    00939   if (new_ta.w > _settings_game.station.station_spread || new_ta.h > _settings_game.station.station_spread) {
    00940     return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
    00941   }
    00942
    00943   return CommandCost();
    00944 }
    00945
    00946 static inline byte *CreateSingle(byte *layout, int n)
    00947 {
    00948   int i = n;
    00949   do *layout++ = 0; while (--i);
    00950   layout[((n - 1) >> 1) - n] = 2;
    00951   return layout;
    00952 }
    00953
    00954 static inline byte *CreateMulti(byte *layout, int n, byte b)
    00955 {
    00956   int i = n;
    00957   do *layout++ = b; while (--i);
    00958   if (n > 4) {
    00959     layout[0 - n] = 0;
    00960     layout[n - 1 - n] = 0;
    00961   }
    00962   return layout;
    00963 }
    00964
    00972 void GetStationLayout(byte *layout, int numtracks, int plat_len, const StationSpec *statspec)
    00973 {
    00974   if (statspec != NULL && statspec->lengths >= plat_len &&
    00975       statspec->platforms[plat_len - 1] >= numtracks &&
    00976       statspec->layouts[plat_len - 1][numtracks - 1]) {
    00977     /* Custom layout defined, follow it. */
    00978     memcpy(layout, statspec->layouts[plat_len - 1][numtracks - 1],
    00979       plat_len * numtracks);
    00980     return;
    00981   }
    00982
    00983   if (plat_len == 1) {
    00984     CreateSingle(layout, numtracks);
    00985   } else {
    00986     if (numtracks & 1) layout = CreateSingle(layout, plat_len);
    00987     numtracks >>= 1;
    00988
    00989     while (--numtracks >= 0) {
    00990       layout = CreateMulti(layout, plat_len, 4);
    00991       layout = CreateMulti(layout, plat_len, 6);
    00992     }
    00993   }
    00994 }
    00995
    01007 template <class T, StringID error_message>
    01008 CommandCost FindJoiningBaseStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, T **st)
    01009 {
    01010   assert(*st == NULL);
    01011   bool check_surrounding = true;
    01012
    01013   if (_settings_game.station.adjacent_stations) {
    01014     if (existing_station != INVALID_STATION) {
    01015       if (adjacent && existing_station != station_to_join) {
    01016         /* You can't build an adjacent station over the top of one that
    01017          * already exists. */
    01018         return_cmd_error(error_message);
    01019       } else {
    01020         /* Extend the current station, and don't check whether it will
    01021          * be near any other stations. */
    01022         *st = T::GetIfValid(existing_station);
    01023         check_surrounding = (*st == NULL);
    01024       }
    01025     } else {
    01026       /* There's no station here. Don't check the tiles surrounding this
    01027        * one if the company wanted to build an adjacent station. */
    01028       if (adjacent) check_surrounding = false;
    01029     }
    01030   }
    01031
    01032   if (check_surrounding) {
    01033     /* Make sure there are no similar stations around us. */
    01034     CommandCost ret = GetStationAround(ta, existing_station, st);
    01035     if (ret.Failed()) return ret;
    01036   }
    01037
    01038   /* Distant join */
    01039   if (*st == NULL && station_to_join != INVALID_STATION) *st = T::GetIfValid(station_to_join);
    01040
    01041   return CommandCost();
    01042 }
    01043
    01053 static CommandCost FindJoiningStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
    01054 {
    01055   return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_RAILWAY_STATION_FIRST>(existing_station, station_to_join, adjacent, ta, st);
    01056 }
    01057
    01067 CommandCost FindJoiningWaypoint(StationID existing_waypoint, StationID waypoint_to_join, bool adjacent, TileArea ta, Waypoint **wp)
    01068 {
    01069   return FindJoiningBaseStation<Waypoint, STR_ERROR_MUST_REMOVE_RAILWAYPOINT_FIRST>(existing_waypoint, waypoint_to_join, adjacent, ta, wp);
    01070 }
    01071
    01089 CommandCost CmdBuildRailStation(TileIndex tile_org, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01090 {
    01091   /* Unpack parameters */
    01092   RailType rt    = Extract<RailType, 0, 4>(p1);
    01093   Axis axis      = Extract<Axis, 4, 1>(p1);
    01094   byte numtracks = GB(p1,  8, 8);
    01095   byte plat_len  = GB(p1, 16, 8);
    01096   bool adjacent  = HasBit(p1, 24);
    01097
    01098   StationClassID spec_class = Extract<StationClassID, 0, 8>(p2);
    01099   byte spec_index           = GB(p2, 8, 8);
    01100   StationID station_to_join = GB(p2, 16, 16);
    01101
    01102   /* Does the authority allow this? */
    01103   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile_org, flags);
    01104   if (ret.Failed()) return ret;
    01105
    01106   if (!ValParamRailtype(rt)) return CMD_ERROR;
    01107
    01108   /* Check if the given station class is valid */
    01109   if ((uint)spec_class >= StationClass::GetCount() || spec_class == STAT_CLASS_WAYP) return CMD_ERROR;
    01110   if (spec_index >= StationClass::GetCount(spec_class)) return CMD_ERROR;
    01111   if (plat_len == 0 || numtracks == 0) return CMD_ERROR;
    01112
    01113   int w_org, h_org;
    01114   if (axis == AXIS_X) {
    01115     w_org = plat_len;
    01116     h_org = numtracks;
    01117   } else {
    01118     h_org = plat_len;
    01119     w_org = numtracks;
    01120   }
    01121
    01122   bool reuse = (station_to_join != NEW_STATION);
    01123   if (!reuse) station_to_join = INVALID_STATION;
    01124   bool distant_join = (station_to_join != INVALID_STATION);
    01125
    01126   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01127
    01128   if (h_org > _settings_game.station.station_spread || w_org > _settings_game.station.station_spread) return CMD_ERROR;
    01129
    01130   /* these values are those that will be stored in train_tile and station_platforms */
    01131   TileArea new_location(tile_org, w_org, h_org);
    01132
    01133   /* Make sure the area below consists of clear tiles. (OR tiles belonging to a certain rail station) */
    01134   StationID est = INVALID_STATION;
    01135   SmallVector<Train *, 4> affected_vehicles;
    01136   /* Clear the land below the station. */
    01137   CommandCost cost = CheckFlatLandRailStation(TileArea(tile_org, w_org, h_org), flags, axis, &est, rt, affected_vehicles, spec_class, spec_index, plat_len, numtracks);
    01138   if (cost.Failed()) return cost;
    01139   /* Add construction expenses. */
    01140   cost.AddCost((numtracks * _price[PR_BUILD_STATION_RAIL] + _price[PR_BUILD_STATION_RAIL_LENGTH]) * plat_len);
    01141   cost.AddCost(numtracks * plat_len * RailBuildCost(rt));
    01142
    01143   Station *st = NULL;
    01144   ret = FindJoiningStation(est, station_to_join, adjacent, new_location, &st);
    01145   if (ret.Failed()) return ret;
    01146
    01147   /* See if there is a deleted station close to us. */
    01148   if (st == NULL && reuse) st = GetClosestDeletedStation(tile_org);
    01149
    01150   if (st != NULL) {
    01151     /* Reuse an existing station. */
    01152     if (st->owner != _current_company) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01153
    01154     if (st->train_station.tile != INVALID_TILE) {
    01155       CommandCost ret = CanExpandRailStation(st, new_location, axis);
    01156       if (ret.Failed()) return ret;
    01157     }
    01158
    01159     /* XXX can't we pack this in the "else" part of the if above? */
    01160     CommandCost ret = st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TEST);
    01161     if (ret.Failed()) return ret;
    01162   } else {
    01163     /* allocate and initialize new station */
    01164     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01165
    01166     if (flags & DC_EXEC) {
    01167       st = new Station(tile_org);
    01168
    01169       st->town = ClosestTownFromTile(tile_org, UINT_MAX);
    01170       st->string_id = GenerateStationName(st, tile_org, STATIONNAMING_RAIL);
    01171
    01172       if (Company::IsValidID(_current_company)) {
    01173         SetBit(st->town->have_ratings, _current_company);
    01174       }
    01175     }
    01176   }
    01177
    01178   /* Check if we can allocate a custom stationspec to this station */
    01179   const StationSpec *statspec = StationClass::Get(spec_class, spec_index);
    01180   int specindex = AllocateSpecToStation(statspec, st, (flags & DC_EXEC) != 0);
    01181   if (specindex == -1) return_cmd_error(STR_ERROR_TOO_MANY_STATION_SPECS);
    01182
    01183   if (statspec != NULL) {
    01184     /* Perform NewStation checks */
    01185
    01186     /* Check if the station size is permitted */
    01187     if (HasBit(statspec->disallowed_platforms, numtracks - 1) || HasBit(statspec->disallowed_lengths, plat_len - 1)) {
    01188       return CMD_ERROR;
    01189     }
    01190
    01191     /* Check if the station is buildable */
    01192     if (HasBit(statspec->callback_mask, CBM_STATION_AVAIL)) {
    01193       uint16 cb_res = GetStationCallback(CBID_STATION_AVAILABILITY, 0, 0, statspec, NULL, INVALID_TILE);
    01194       if (cb_res != CALLBACK_FAILED && !Convert8bitBooleanCallback(statspec->grf_prop.grffile, CBID_STATION_AVAILABILITY, cb_res)) return CMD_ERROR;
    01195     }
    01196   }
    01197
    01198   if (flags & DC_EXEC) {
    01199     TileIndexDiff tile_delta;
    01200     byte *layout_ptr;
    01201     byte numtracks_orig;
    01202     Track track;
    01203
    01204     st->train_station = new_location;
    01205     st->AddFacility(FACIL_TRAIN, new_location.tile);
    01206
    01207     st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TRY);
    01208
    01209     if (statspec != NULL) {
    01210       /* Include this station spec's animation trigger bitmask
    01211        * in the station's cached copy. */
    01212       st->cached_anim_triggers |= statspec->animation.triggers;
    01213     }
    01214
    01215     tile_delta = (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
    01216     track = AxisToTrack(axis);
    01217
    01218     layout_ptr = AllocaM(byte, numtracks * plat_len);
    01219     GetStationLayout(layout_ptr, numtracks, plat_len, statspec);
    01220
    01221     numtracks_orig = numtracks;
    01222
    01223     Company *c = Company::Get(st->owner);
    01224     do {
    01225       TileIndex tile = tile_org;
    01226       int w = plat_len;
    01227       do {
    01228         byte layout = *layout_ptr++;
    01229         if (IsRailStationTile(tile) && HasStationReservation(tile)) {
    01230           /* Check for trains having a reservation for this tile. */
    01231           Train *v = GetTrainForReservation(tile, AxisToTrack(GetRailStationAxis(tile)));
    01232           if (v != NULL) {
    01233             FreeTrainTrackReservation(v);
    01234             *affected_vehicles.Append() = v;
    01235             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01236             for (; v->Next() != NULL; v = v->Next()) { }
    01237             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), false);
    01238           }
    01239         }
    01240
    01241         /* Railtype can change when overbuilding. */
    01242         if (IsRailStationTile(tile)) {
    01243           if (!IsStationTileBlocked(tile)) c->infrastructure.rail[GetRailType(tile)]--;
    01244           c->infrastructure.station--;
    01245         }
    01246
    01247         /* Remove animation if overbuilding */
    01248         DeleteAnimatedTile(tile);
    01249         byte old_specindex = HasStationTileRail(tile) ? GetCustomStationSpecIndex(tile) : 0;
    01250         MakeRailStation(tile, st->owner, st->index, axis, layout & ~1, rt);
    01251         /* Free the spec if we overbuild something */
    01252         DeallocateSpecFromStation(st, old_specindex);
    01253
    01254         SetCustomStationSpecIndex(tile, specindex);
    01255         SetStationTileRandomBits(tile, GB(Random(), 0, 4));
    01256         SetAnimationFrame(tile, 0);
    01257
    01258         if (!IsStationTileBlocked(tile)) c->infrastructure.rail[rt]++;
    01259         c->infrastructure.station++;
    01260
    01261         if (statspec != NULL) {
    01262           /* Use a fixed axis for GetPlatformInfo as our platforms / numtracks are always the right way around */
    01263           uint32 platinfo = GetPlatformInfo(AXIS_X, 0, plat_len, numtracks_orig, plat_len - w, numtracks_orig - numtracks, false);
    01264
    01265           /* As the station is not yet completely finished, the station does not yet exist. */
    01266           uint16 callback = GetStationCallback(CBID_STATION_TILE_LAYOUT, platinfo, 0, statspec, NULL, tile);
    01267           if (callback != CALLBACK_FAILED) {
    01268             if (callback < 8) {
    01269               SetStationGfx(tile, (callback & ~1) + axis);
    01270             } else {
    01271               ErrorUnknownCallbackResult(statspec->grf_prop.grffile->grfid, CBID_STATION_TILE_LAYOUT, callback);
    01272             }
    01273           }
    01274
    01275           /* Trigger station animation -- after building? */
    01276           TriggerStationAnimation(st, tile, SAT_BUILT);
    01277         }
    01278
    01279         tile += tile_delta;
    01280       } while (--w);
    01281       AddTrackToSignalBuffer(tile_org, track, _current_company);
    01282       YapfNotifyTrackLayoutChange(tile_org, track);
    01283       tile_org += tile_delta ^ TileDiffXY(1, 1); // perpendicular to tile_delta
    01284     } while (--numtracks);
    01285
    01286     for (uint i = 0; i < affected_vehicles.Length(); ++i) {
    01287       /* Restore reservations of trains. */
    01288       Train *v = affected_vehicles[i];
    01289       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01290       TryPathReserve(v, true, true);
    01291       for (; v->Next() != NULL; v = v->Next()) { }
    01292       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01293     }
    01294
    01295     st->MarkTilesDirty(false);
    01296     st->UpdateVirtCoord();
    01297     UpdateStationAcceptance(st, false);
    01298     st->RecomputeIndustriesNear();
    01299     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01300     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01301     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01302     DirtyCompanyInfrastructureWindows(st->owner);
    01303   }
    01304
    01305   return cost;
    01306 }
    01307
    01308 static void MakeRailStationAreaSmaller(BaseStation *st)
    01309 {
    01310   TileArea ta = st->train_station;
    01311
    01312 restart:
    01313
    01314   /* too small? */
    01315   if (ta.w != 0 && ta.h != 0) {
    01316     /* check the left side, x = constant, y changes */
    01317     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(0, i));) {
    01318       /* the left side is unused? */
    01319       if (++i == ta.h) {
    01320         ta.tile += TileDiffXY(1, 0);
    01321         ta.w--;
    01322         goto restart;
    01323       }
    01324     }
    01325
    01326     /* check the right side, x = constant, y changes */
    01327     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(ta.w - 1, i));) {
    01328       /* the right side is unused? */
    01329       if (++i == ta.h) {
    01330         ta.w--;
    01331         goto restart;
    01332       }
    01333     }
    01334
    01335     /* check the upper side, y = constant, x changes */
    01336     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, 0));) {
    01337       /* the left side is unused? */
    01338       if (++i == ta.w) {
    01339         ta.tile += TileDiffXY(0, 1);
    01340         ta.h--;
    01341         goto restart;
    01342       }
    01343     }
    01344
    01345     /* check the lower side, y = constant, x changes */
    01346     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, ta.h - 1));) {
    01347       /* the left side is unused? */
    01348       if (++i == ta.w) {
    01349         ta.h--;
    01350         goto restart;
    01351       }
    01352     }
    01353   } else {
    01354     ta.Clear();
    01355   }
    01356
    01357   st->train_station = ta;
    01358 }
    01359
    01370 template <class T>
    01371 CommandCost RemoveFromRailBaseStation(TileArea ta, SmallVector<T *, 4> &affected_stations, DoCommandFlag flags, Money removal_cost, bool keep_rail)
    01372 {
    01373   /* Count of the number of tiles removed */
    01374   int quantity = 0;
    01375   CommandCost total_cost(EXPENSES_CONSTRUCTION);
    01376
    01377   /* Do the action for every tile into the area */
    01378   TILE_AREA_LOOP(tile, ta) {
    01379     /* Make sure the specified tile is a rail station */
    01380     if (!HasStationTileRail(tile)) continue;
    01381
    01382     /* If there is a vehicle on ground, do not allow to remove (flood) the tile */
    01383     CommandCost ret = EnsureNoVehicleOnGround(tile);
    01384     if (ret.Failed()) continue;
    01385
    01386     /* Check ownership of station */
    01387     T *st = T::GetByTile(tile);
    01388     if (st == NULL) continue;
    01389
    01390     if (_current_company != OWNER_WATER) {
    01391       CommandCost ret = CheckOwnership(st->owner);
    01392       if (ret.Failed()) continue;
    01393     }
    01394
    01395     /* If we reached here, the tile is valid so increase the quantity of tiles we will remove */
    01396     quantity++;
    01397
    01398     if (keep_rail || IsStationTileBlocked(tile)) {
    01399       /* Don't refund the 'steel' of the track when we keep the
    01400        *  rail, or when the tile didn't have any rail at all. */
    01401       total_cost.AddCost(-_price[PR_CLEAR_RAIL]);
    01402     }
    01403
    01404     if (flags & DC_EXEC) {
    01405       /* read variables before the station tile is removed */
    01406       uint specindex = GetCustomStationSpecIndex(tile);
    01407       Track track = GetRailStationTrack(tile);
    01408       Owner owner = GetTileOwner(tile);
    01409       RailType rt = GetRailType(tile);
    01410       Train *v = NULL;
    01411
    01412       if (HasStationReservation(tile)) {
    01413         v = GetTrainForReservation(tile, track);
    01414         if (v != NULL) {
    01415           /* Free train reservation. */
    01416           FreeTrainTrackReservation(v);
    01417           if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01418           Vehicle *temp = v;
    01419           for (; temp->Next() != NULL; temp = temp->Next()) { }
    01420           if (IsRailStationTile(temp->tile)) SetRailStationPlatformReservation(temp->tile, TrackdirToExitdir(ReverseTrackdir(temp->GetVehicleTrackdir())), false);
    01421         }
    01422       }
    01423
    01424       bool build_rail = keep_rail && !IsStationTileBlocked(tile);
    01425       if (!build_rail && !IsStationTileBlocked(tile)) Company::Get(owner)->infrastructure.rail[rt]--;
    01426
    01427       DoClearSquare(tile);
    01428       DeleteNewGRFInspectWindow(GSF_STATIONS, tile);
    01429       if (build_rail) MakeRailNormal(tile, owner, TrackToTrackBits(track), rt);
    01430       Company::Get(owner)->infrastructure.station--;
    01431       DirtyCompanyInfrastructureWindows(owner);
    01432
    01433       st->rect.AfterRemoveTile(st, tile);
    01434       AddTrackToSignalBuffer(tile, track, owner);
    01435       YapfNotifyTrackLayoutChange(tile, track);
    01436
    01437       DeallocateSpecFromStation(st, specindex);
    01438
    01439       affected_stations.Include(st);
    01440
    01441       if (v != NULL) {
    01442         /* Restore station reservation. */
    01443         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01444         TryPathReserve(v, true, true);
    01445         for (; v->Next() != NULL; v = v->Next()) { }
    01446         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01447       }
    01448     }
    01449   }
    01450
    01451   if (quantity == 0) return_cmd_error(STR_ERROR_THERE_IS_NO_STATION);
    01452
    01453   for (T **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01454     T *st = *stp;
    01455
    01456     /* now we need to make the "spanned" area of the railway station smaller
    01457      * if we deleted something at the edges.
    01458      * we also need to adjust train_tile. */
    01459     MakeRailStationAreaSmaller(st);
    01460     UpdateStationSignCoord(st);
    01461
    01462     /* if we deleted the whole station, delete the train facility. */
    01463     if (st->train_station.tile == INVALID_TILE) {
    01464       st->facilities &= ~FACIL_TRAIN;
    01465       SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01466       st->UpdateVirtCoord();
    01467       DeleteStationIfEmpty(st);
    01468     }
    01469   }
    01470
    01471   total_cost.AddCost(quantity * removal_cost);
    01472   return total_cost;
    01473 }
    01474
    01486 CommandCost CmdRemoveFromRailStation(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01487 {
    01488   TileIndex end = p1 == 0 ? start : p1;
    01489   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01490
    01491   TileArea ta(start, end);
    01492   SmallVector<Station *, 4> affected_stations;
    01493
    01494   CommandCost ret = RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_STATION_RAIL], HasBit(p2, 0));
    01495   if (ret.Failed()) return ret;
    01496
    01497   /* Do all station specific functions here. */
    01498   for (Station **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01499     Station *st = *stp;
    01500
    01501     if (st->train_station.tile == INVALID_TILE) SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01502     st->MarkTilesDirty(false);
    01503     st->RecomputeIndustriesNear();
    01504   }
    01505
    01506   /* Now apply the rail cost to the number that we deleted */
    01507   return ret;
    01508 }
    01509
    01521 CommandCost CmdRemoveFromRailWaypoint(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01522 {
    01523   TileIndex end = p1 == 0 ? start : p1;
    01524   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01525
    01526   TileArea ta(start, end);
    01527   SmallVector<Waypoint *, 4> affected_stations;
    01528
    01529   return RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_WAYPOINT_RAIL], HasBit(p2, 0));
    01530 }
    01531
    01532
    01540 template <class T>
    01541 CommandCost RemoveRailStation(T *st, DoCommandFlag flags)
    01542 {
    01543   /* Current company owns the station? */
    01544   if (_current_company != OWNER_WATER) {
    01545     CommandCost ret = CheckOwnership(st->owner);
    01546     if (ret.Failed()) return ret;
    01547   }
    01548
    01549   /* determine width and height of platforms */
    01550   TileArea ta = st->train_station;
    01551
    01552   assert(ta.w != 0 && ta.h != 0);
    01553
    01554   CommandCost cost(EXPENSES_CONSTRUCTION);
    01555   /* clear all areas of the station */
    01556   TILE_AREA_LOOP(tile, ta) {
    01557     /* only remove tiles that are actually train station tiles */
    01558     if (!st->TileBelongsToRailStation(tile)) continue;
    01559
    01560     CommandCost ret = EnsureNoVehicleOnGround(tile);
    01561     if (ret.Failed()) return ret;
    01562
    01563     cost.AddCost(_price[PR_CLEAR_STATION_RAIL]);
    01564     if (flags & DC_EXEC) {
    01565       /* read variables before the station tile is removed */
    01566       Track track = GetRailStationTrack(tile);
    01567       Owner owner = GetTileOwner(tile); // _current_company can be OWNER_WATER
    01568       Train *v = NULL;
    01569       if (HasStationReservation(tile)) {
    01570         v = GetTrainForReservation(tile, track);
    01571         if (v != NULL) FreeTrainTrackReservation(v);
    01572       }
    01573       if (!IsStationTileBlocked(tile)) Company::Get(owner)->infrastructure.rail[GetRailType(tile)]--;
    01574       Company::Get(owner)->infrastructure.station--;
    01575       DoClearSquare(tile);
    01576       DeleteNewGRFInspectWindow(GSF_STATIONS, tile);
    01577       AddTrackToSignalBuffer(tile, track, owner);
    01578       YapfNotifyTrackLayoutChange(tile, track);
    01579       if (v != NULL) TryPathReserve(v, true);
    01580     }
    01581   }
    01582
    01583   if (flags & DC_EXEC) {
    01584     st->rect.AfterRemoveRect(st, st->train_station);
    01585
    01586     st->train_station.Clear();
    01587
    01588     st->facilities &= ~FACIL_TRAIN;
    01589
    01590     free(st->speclist);
    01591     st->num_specs = 0;
    01592     st->speclist  = NULL;
    01593     st->cached_anim_triggers = 0;
    01594
    01595     DirtyCompanyInfrastructureWindows(st->owner);
    01596     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01597     st->UpdateVirtCoord();
    01598     DeleteStationIfEmpty(st);
    01599   }
    01600
    01601   return cost;
    01602 }
    01603
    01610 static CommandCost RemoveRailStation(TileIndex tile, DoCommandFlag flags)
    01611 {
    01612   /* if there is flooding, remove platforms tile by tile */
    01613   if (_current_company == OWNER_WATER) {
    01614     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_STATION);
    01615   }
    01616
    01617   Station *st = Station::GetByTile(tile);
    01618   CommandCost cost = RemoveRailStation(st, flags);
    01619
    01620   if (flags & DC_EXEC) st->RecomputeIndustriesNear();
    01621
    01622   return cost;
    01623 }
    01624
    01631 static CommandCost RemoveRailWaypoint(TileIndex tile, DoCommandFlag flags)
    01632 {
    01633   /* if there is flooding, remove waypoints tile by tile */
    01634   if (_current_company == OWNER_WATER) {
    01635     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_WAYPOINT);
    01636   }
    01637
    01638   return RemoveRailStation(Waypoint::GetByTile(tile), flags);
    01639 }
    01640
    01641
    01647 static RoadStop **FindRoadStopSpot(bool truck_station, Station *st)
    01648 {
    01649   RoadStop **primary_stop = (truck_station) ? &st->truck_stops : &st->bus_stops;
    01650
    01651   if (*primary_stop == NULL) {
    01652     /* we have no roadstop of the type yet, so write a "primary stop" */
    01653     return primary_stop;
    01654   } else {
    01655     /* there are stops already, so append to the end of the list */
    01656     RoadStop *stop = *primary_stop;
    01657     while (stop->next != NULL) stop = stop->next;
    01658     return &stop->next;
    01659   }
    01660 }
    01661
    01662 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags);
    01663
    01673 static CommandCost FindJoiningRoadStop(StationID existing_stop, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
    01674 {
    01675   return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_ROAD_STOP_FIRST>(existing_stop, station_to_join, adjacent, ta, st);
    01676 }
    01677
    01693 CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01694 {
    01695   bool type = HasBit(p2, 0);
    01696   bool is_drive_through = HasBit(p2, 1);
    01697   RoadTypes rts = Extract<RoadTypes, 2, 2>(p2);
    01698   StationID station_to_join = GB(p2, 16, 16);
    01699   bool reuse = (station_to_join != NEW_STATION);
    01700   if (!reuse) station_to_join = INVALID_STATION;
    01701   bool distant_join = (station_to_join != INVALID_STATION);
    01702
    01703   uint8 width = (uint8)GB(p1, 0, 8);
    01704   uint8 lenght = (uint8)GB(p1, 8, 8);
    01705
    01706   /* Check if the requested road stop is too big */
    01707   if (width > _settings_game.station.station_spread || lenght > _settings_game.station.station_spread) return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
    01708   /* Check for incorrect width / lenght. */
    01709   if (width == 0 || lenght == 0) return CMD_ERROR;
    01710   /* Check if the first tile and the last tile are valid */
    01711   if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, lenght - 1) == INVALID_TILE) return CMD_ERROR;
    01712
    01713   TileArea roadstop_area(tile, width, lenght);
    01714
    01715   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01716
    01717   if (!HasExactlyOneBit(rts) || !HasRoadTypesAvail(_current_company, rts)) return CMD_ERROR;
    01718
    01719   /* Trams only have drive through stops */
    01720   if (!is_drive_through && HasBit(rts, ROADTYPE_TRAM)) return CMD_ERROR;
    01721
    01722   DiagDirection ddir = Extract<DiagDirection, 6, 2>(p2);
    01723
    01724   /* Safeguard the parameters. */
    01725   if (!IsValidDiagDirection(ddir)) return CMD_ERROR;
    01726   /* If it is a drive-through stop, check for valid axis. */
    01727   if (is_drive_through && !IsValidAxis((Axis)ddir)) return CMD_ERROR;
    01728
    01729   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
    01730   if (ret.Failed()) return ret;
    01731
    01732   /* Total road stop cost. */
    01733   CommandCost cost(EXPENSES_CONSTRUCTION, roadstop_area.w * roadstop_area.h * _price[type ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
    01734   StationID est = INVALID_STATION;
    01735   ret = CheckFlatLandRoadStop(roadstop_area, flags, is_drive_through ? 5 << ddir : 1 << ddir, is_drive_through, type, DiagDirToAxis(ddir), &est, rts);
    01736   if (ret.Failed()) return ret;
    01737   cost.AddCost(ret);
    01738
    01739   Station *st = NULL;
    01740   ret = FindJoiningRoadStop(est, station_to_join, HasBit(p2, 5), roadstop_area, &st);
    01741   if (ret.Failed()) return ret;
    01742
    01743   /* Find a deleted station close to us */
    01744   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    01745
    01746   /* Check if this number of road stops can be allocated. */
    01747   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);
    01748
    01749   if (st != NULL) {
    01750     if (st->owner != _current_company) {
    01751       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01752     }
    01753
    01754     CommandCost ret = st->rect.BeforeAddRect(roadstop_area.tile, roadstop_area.w, roadstop_area.h, StationRect::ADD_TEST);
    01755     if (ret.Failed()) return ret;
    01756   } else {
    01757     /* allocate and initialize new station */
    01758     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01759
    01760     if (flags & DC_EXEC) {
    01761       st = new Station(tile);
    01762
    01763       st->town = ClosestTownFromTile(tile, UINT_MAX);
    01764       st->string_id = GenerateStationName(st, tile, STATIONNAMING_ROAD);
    01765
    01766       if (Company::IsValidID(_current_company)) {
    01767         SetBit(st->town->have_ratings, _current_company);
    01768       }
    01769     }
    01770   }
    01771
    01772   if (flags & DC_EXEC) {
    01773     /* Check every tile in the area. */
    01774     TILE_AREA_LOOP(cur_tile, roadstop_area) {
    01775       RoadTypes cur_rts = GetRoadTypes(cur_tile);
    01776       Owner road_owner = HasBit(cur_rts, ROADTYPE_ROAD) ? GetRoadOwner(cur_tile, ROADTYPE_ROAD) : _current_company;
    01777       Owner tram_owner = HasBit(cur_rts, ROADTYPE_TRAM) ? GetRoadOwner(cur_tile, ROADTYPE_TRAM) : _current_company;
    01778
    01779       if (IsTileType(cur_tile, MP_STATION) && IsRoadStop(cur_tile)) {
    01780         RemoveRoadStop(cur_tile, flags);
    01781       }
    01782
    01783       RoadStop *road_stop = new RoadStop(cur_tile);
    01784       /* Insert into linked list of RoadStops. */
    01785       RoadStop **currstop = FindRoadStopSpot(type, st);
    01786       *currstop = road_stop;
    01787
    01788       if (type) {
    01789         st->truck_station.Add(cur_tile);
    01790       } else {
    01791         st->bus_station.Add(cur_tile);
    01792       }
    01793
    01794       /* Initialize an empty station. */
    01795       st->AddFacility((type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, cur_tile);
    01796
    01797       st->rect.BeforeAddTile(cur_tile, StationRect::ADD_TRY);
    01798
    01799       RoadStopType rs_type = type ? ROADSTOP_TRUCK : ROADSTOP_BUS;
    01800       if (is_drive_through) {
    01801         /* Update company infrastructure counts. If the current tile is a normal
    01802          * road tile, count only the new road bits needed to get a full diagonal road. */
    01803         RoadType rt;
    01804         FOR_EACH_SET_ROADTYPE(rt, cur_rts | rts) {
    01805           Company *c = Company::GetIfValid(rt == ROADTYPE_ROAD ? road_owner : tram_owner);
    01806           if (c != NULL) {
    01807             c->infrastructure.road[rt] += 2 - (IsNormalRoadTile(cur_tile) && HasBit(cur_rts, rt) ? CountBits(GetRoadBits(cur_tile, rt)) : 0);
    01808             DirtyCompanyInfrastructureWindows(c->index);
    01809           }
    01810         }
    01811
    01812         MakeDriveThroughRoadStop(cur_tile, st->owner, road_owner, tram_owner, st->index, rs_type, rts | cur_rts, DiagDirToAxis(ddir));
    01813         road_stop->MakeDriveThrough();
    01814       } else {
    01815         /* Non-drive-through stop never overbuild and always count as two road bits. */
    01816         Company::Get(st->owner)->infrastructure.road[FIND_FIRST_BIT(rts)] += 2;
    01817         MakeRoadStop(cur_tile, st->owner, st->index, rs_type, rts, ddir);
    01818       }
    01819       Company::Get(st->owner)->infrastructure.station++;
    01820       DirtyCompanyInfrastructureWindows(st->owner);
    01821
    01822       MarkTileDirtyByTile(cur_tile);
    01823     }
    01824   }
    01825
    01826   if (st != NULL) {
    01827     st->UpdateVirtCoord();
    01828     UpdateStationAcceptance(st, false);
    01829     st->RecomputeIndustriesNear();
    01830     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01831     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01832     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ROADVEHS);
    01833   }
    01834   return cost;
    01835 }
    01836
    01837
    01838 static Vehicle *ClearRoadStopStatusEnum(Vehicle *v, void *)
    01839 {
    01840   if (v->type == VEH_ROAD) {
    01841     /* Okay... we are a road vehicle on a drive through road stop.
    01842      * But that road stop has just been removed, so we need to make
    01843      * sure we are in a valid state... however, vehicles can also
    01844      * turn on road stop tiles, so only clear the 'road stop' state
    01845      * bits and only when the state was 'in road stop', otherwise
    01846      * we'll end up clearing the turn around bits. */
    01847     RoadVehicle *rv = RoadVehicle::From(v);
    01848     if (HasBit(rv->state, RVS_IN_DT_ROAD_STOP)) rv->state &= RVSB_ROAD_STOP_TRACKDIR_MASK;
    01849   }
    01850
    01851   return NULL;
    01852 }
    01853
    01854
    01861 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags)
    01862 {
    01863   Station *st = Station::GetByTile(tile);
    01864
    01865   if (_current_company != OWNER_WATER) {
    01866     CommandCost ret = CheckOwnership(st->owner);
    01867     if (ret.Failed()) return ret;
    01868   }
    01869
    01870   bool is_truck = IsTruckStop(tile);
    01871
    01872   RoadStop **primary_stop;
    01873   RoadStop *cur_stop;
    01874   if (is_truck) { // truck stop
    01875     primary_stop = &st->truck_stops;
    01876     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_TRUCK);
    01877   } else {
    01878     primary_stop = &st->bus_stops;
    01879     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_BUS);
    01880   }
    01881
    01882   assert(cur_stop != NULL);
    01883
    01884   /* don't do the check for drive-through road stops when company bankrupts */
    01885   if (IsDriveThroughStopTile(tile) && (flags & DC_BANKRUPT)) {
    01886     /* remove the 'going through road stop' status from all vehicles on that tile */
    01887     if (flags & DC_EXEC) FindVehicleOnPos(tile, NULL, &ClearRoadStopStatusEnum);
    01888   } else {
    01889     CommandCost ret = EnsureNoVehicleOnGround(tile);
    01890     if (ret.Failed()) return ret;
    01891   }
    01892
    01893   if (flags & DC_EXEC) {
    01894     if (*primary_stop == cur_stop) {
    01895       /* removed the first stop in the list */
    01896       *primary_stop = cur_stop->next;
    01897       /* removed the only stop? */
    01898       if (*primary_stop == NULL) {
    01899         st->facilities &= (is_truck ? ~FACIL_TRUCK_STOP : ~FACIL_BUS_STOP);
    01900       }
    01901     } else {
    01902       /* tell the predecessor in the list to skip this stop */
    01903       RoadStop *pred = *primary_stop;
    01904       while (pred->next != cur_stop) pred = pred->next;
    01905       pred->next = cur_stop->next;
    01906     }
    01907
    01908     /* Update company infrastructure counts. */
    01909     RoadType rt;
    01910     FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(tile)) {
    01911       Company *c = Company::GetIfValid(GetRoadOwner(tile, rt));
    01912       if (c != NULL) {
    01913         c->infrastructure.road[rt] -= 2;
    01914         DirtyCompanyInfrastructureWindows(c->index);
    01915       }
    01916     }
    01917     Company::Get(st->owner)->infrastructure.station--;
    01918
    01919     if (IsDriveThroughStopTile(tile)) {
    01920       /* Clears the tile for us */
    01921       cur_stop->ClearDriveThrough();
    01922     } else {
    01923       DoClearSquare(tile);
    01924     }
    01925
    01926     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ROADVEHS);
    01927     delete cur_stop;
    01928
    01929     /* Make sure no vehicle is going to the old roadstop */
    01930     RoadVehicle *v;
    01931     FOR_ALL_ROADVEHICLES(v) {
    01932       if (v->First() == v && v->current_order.IsType(OT_GOTO_STATION) &&
    01933           v->dest_tile == tile) {
    01934         v->dest_tile = v->GetOrderStationLocation(st->index);
    01935       }
    01936     }
    01937
    01938     st->rect.AfterRemoveTile(st, tile);
    01939
    01940     st->UpdateVirtCoord();
    01941     st->RecomputeIndustriesNear();
    01942     DeleteStationIfEmpty(st);
    01943
    01944     /* Update the tile area of the truck/bus stop */
    01945     if (is_truck) {
    01946       st->truck_station.Clear();
    01947       for (const RoadStop *rs = st->truck_stops; rs != NULL; rs = rs->next) st->truck_station.Add(rs->xy);
    01948     } else {
    01949       st->bus_station.Clear();
    01950       for (const RoadStop *rs = st->bus_stops; rs != NULL; rs = rs->next) st->bus_station.Add(rs->xy);
    01951     }
    01952   }
    01953
    01954   return CommandCost(EXPENSES_CONSTRUCTION, _price[is_truck ? PR_CLEAR_STATION_TRUCK : PR_CLEAR_STATION_BUS]);
    01955 }
    01956
    01967 CommandCost CmdRemoveRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01968 {
    01969   uint8 width = (uint8)GB(p1, 0, 8);
    01970   uint8 height = (uint8)GB(p1, 8, 8);
    01971
    01972   /* Check for incorrect width / height. */
    01973   if (width == 0 || height == 0) return CMD_ERROR;
    01974   /* Check if the first tile and the last tile are valid */
    01975   if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, height - 1) == INVALID_TILE) return CMD_ERROR;
    01976
    01977   TileArea roadstop_area(tile, width, height);
    01978
    01979   int quantity = 0;
    01980   CommandCost cost(EXPENSES_CONSTRUCTION);
    01981   TILE_AREA_LOOP(cur_tile, roadstop_area) {
    01982     /* Make sure the specified tile is a road stop of the correct type */
    01983     if (!IsTileType(cur_tile, MP_STATION) || !IsRoadStop(cur_tile) || (uint32)GetRoadStopType(cur_tile) != GB(p2, 0, 1)) continue;
    01984
    01985     /* Save the stop info before it is removed */
    01986     bool is_drive_through = IsDriveThroughStopTile(cur_tile);
    01987     RoadTypes rts = GetRoadTypes(cur_tile);
    01988     RoadBits road_bits = IsDriveThroughStopTile(cur_tile) ?
    01989         ((GetRoadStopDir(cur_tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y) :
    01990         DiagDirToRoadBits(GetRoadStopDir(cur_tile));
    01991
    01992     Owner road_owner = GetRoadOwner(cur_tile, ROADTYPE_ROAD);
    01993     Owner tram_owner = GetRoadOwner(cur_tile, ROADTYPE_TRAM);
    01994     CommandCost ret = RemoveRoadStop(cur_tile, flags);
    01995     if (ret.Failed()) return ret;
    01996     cost.AddCost(ret);
    01997
    01998     quantity++;
    01999     /* If the stop was a drive-through stop replace the road */
    02000     if ((flags & DC_EXEC) && is_drive_through) {
    02001       MakeRoadNormal(cur_tile, road_bits, rts, ClosestTownFromTile(cur_tile, UINT_MAX)->index,
    02002           road_owner, tram_owner);
    02003
    02004       /* Update company infrastructure counts. */
    02005       RoadType rt;
    02006       FOR_EACH_SET_ROADTYPE(rt, rts) {
    02007         Company *c = Company::GetIfValid(GetRoadOwner(cur_tile, rt));
    02008         if (c != NULL) {
    02009           c->infrastructure.road[rt] += CountBits(road_bits);
    02010           DirtyCompanyInfrastructureWindows(c->index);
    02011         }
    02012       }
    02013     }
    02014   }
    02015
    02016   if (quantity == 0) return_cmd_error(STR_ERROR_THERE_IS_NO_STATION);
    02017
    02018   return cost;
    02019 }
    02020
    02027 static uint GetMinimalAirportDistanceToTile(TileIterator &it, TileIndex town_tile)
    02028 {
    02029   uint mindist = UINT_MAX;
    02030
    02031   for (TileIndex cur_tile = it; cur_tile != INVALID_TILE; cur_tile = ++it) {
    02032     mindist = min(mindist, DistanceManhattan(town_tile, cur_tile));
    02033   }
    02034
    02035   return mindist;
    02036 }
    02037
    02047 uint8 GetAirportNoiseLevelForTown(const AirportSpec *as, TileIterator &it, TileIndex town_tile)
    02048 {
    02049   /* 0 cannot be accounted, and 1 is the lowest that can be reduced from town.
    02050    * So no need to go any further*/
    02051   if (as->noise_level < 2) return as->noise_level;
    02052
    02053   uint distance = GetMinimalAirportDistanceToTile(it, town_tile);
    02054
    02055   /* The steps for measuring noise reduction are based on the "magical" (and arbitrary) 8 base distance
    02056    * adding the town_council_tolerance 4 times, as a way to graduate, depending of the tolerance.
    02057    * Basically, it says that the less tolerant a town is, the bigger the distance before
    02058    * an actual decrease can be granted */
    02059   uint8 town_tolerance_distance = 8 + (_settings_game.difficulty.town_council_tolerance * 4);
    02060
    02061   /* now, we want to have the distance segmented using the distance judged bareable by town
    02062    * This will give us the coefficient of reduction the distance provides. */
    02063   uint noise_reduction = distance / town_tolerance_distance;
    02064
    02065   /* If the noise reduction equals the airport noise itself, don't give it for free.
    02066    * Otherwise, simply reduce the airport's level. */
    02067   return noise_reduction >= as->noise_level ? 1 : as->noise_level - noise_reduction;
    02068 }
    02069
    02077 Town *AirportGetNearestTown(const AirportSpec *as, const TileIterator &it)
    02078 {
    02079   Town *t, *nearest = NULL;
    02080   uint add = as->size_x + as->size_y - 2; // GetMinimalAirportDistanceToTile can differ from DistanceManhattan by this much
    02081   uint mindist = UINT_MAX - add; // prevent overflow
    02082   FOR_ALL_TOWNS(t) {
    02083     if (DistanceManhattan(t->xy, it) < mindist + add) { // avoid calling GetMinimalAirportDistanceToTile too often
    02084       TileIterator *copy = it.Clone();
    02085       uint dist = GetMinimalAirportDistanceToTile(*copy, t->xy);
    02086       delete copy;
    02087       if (dist < mindist) {
    02088         nearest = t;
    02089         mindist = dist;
    02090       }
    02091     }
    02092   }
    02093
    02094   return nearest;
    02095 }
    02096
    02097
    02099 void UpdateAirportsNoise()
    02100 {
    02101   Town *t;
    02102   const Station *st;
    02103
    02104   FOR_ALL_TOWNS(t) t->noise_reached = 0;
    02105
    02106   FOR_ALL_STATIONS(st) {
    02107     if (st->airport.tile != INVALID_TILE && st->airport.type != AT_OILRIG) {
    02108       const AirportSpec *as = st->airport.GetSpec();
    02109       AirportTileIterator it(st);
    02110       Town *nearest = AirportGetNearestTown(as, it);
    02111       nearest->noise_reached += GetAirportNoiseLevelForTown(as, it, nearest->xy);
    02112     }
    02113   }
    02114 }
    02115
    02129 CommandCost CmdBuildAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02130 {
    02131   StationID station_to_join = GB(p2, 16, 16);
    02132   bool reuse = (station_to_join != NEW_STATION);
    02133   if (!reuse) station_to_join = INVALID_STATION;
    02134   bool distant_join = (station_to_join != INVALID_STATION);
    02135   byte airport_type = GB(p1, 0, 8);
    02136   byte layout = GB(p1, 8, 8);
    02137
    02138   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    02139
    02140   if (airport_type >= NUM_AIRPORTS) return CMD_ERROR;
    02141
    02142   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
    02143   if (ret.Failed()) return ret;
    02144
    02145   /* Check if a valid, buildable airport was chosen for construction */
    02146   const AirportSpec *as = AirportSpec::Get(airport_type);
    02147   if (!as->IsAvailable() || layout >= as->num_table) return CMD_ERROR;
    02148
    02149   Direction rotation = as->rotation[layout];
    02150   Town *t = ClosestTownFromTile(tile, UINT_MAX);
    02151   int w = as->size_x;
    02152   int h = as->size_y;
    02153   if (rotation == DIR_E || rotation == DIR_W) Swap(w, h);
    02154
    02155   if (w > _settings_game.station.station_spread || h > _settings_game.station.station_spread) {
    02156     return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
    02157   }
    02158
    02159   CommandCost cost = CheckFlatLand(TileArea(tile, w, h), flags);
    02160   if (cost.Failed()) return cost;
    02161
    02162   /* The noise level is the noise from the airport and reduce it to account for the distance to the town center. */
    02163   AirportTileTableIterator iter(as->table[layout], tile);
    02164   Town *nearest = AirportGetNearestTown(as, iter);
    02165   uint newnoise_level = GetAirportNoiseLevelForTown(as, iter, nearest->xy);
    02166
    02167   /* Check if local auth would allow a new airport */
    02168   StringID authority_refuse_message = STR_NULL;
    02169
    02170   if (_settings_game.economy.station_noise_level) {
    02171     /* do not allow to build a new airport if this raise the town noise over the maximum allowed by town */
    02172     if ((nearest->noise_reached + newnoise_level) > nearest->MaxTownNoise()) {
    02173       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_NOISE;
    02174     }
    02175   } else {
    02176     uint num = 0;
    02177     const Station *st;
    02178     FOR_ALL_STATIONS(st) {
    02179       if (st->town == t && (st->facilities & FACIL_AIRPORT) && st->airport.type != AT_OILRIG) num++;
    02180     }
    02181     if (num >= 2) {
    02182       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_AIRPORT;
    02183     }
    02184   }
    02185
    02186   if (authority_refuse_message != STR_NULL) {
    02187     SetDParam(0, t->index);
    02188     return_cmd_error(authority_refuse_message);
    02189   }
    02190
    02191   Station *st = NULL;
    02192   ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 0), TileArea(tile, w, h), &st);
    02193   if (ret.Failed()) return ret;
    02194
    02195   /* Distant join */
    02196   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    02197
    02198   /* Find a deleted station close to us */
    02199   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    02200
    02201   if (st != NULL) {
    02202     if (st->owner != _current_company) {
    02203       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    02204     }
    02205
    02206     CommandCost ret = st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TEST);
    02207     if (ret.Failed()) return ret;
    02208
    02209     if (st->airport.tile != INVALID_TILE) {
    02210       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_AIRPORT);
    02211     }
    02212   } else {
    02213     /* allocate and initialize new station */
    02214     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    02215
    02216     if (flags & DC_EXEC) {
    02217       st = new Station(tile);
    02218
    02219       st->town = t;
    02220       st->string_id = GenerateStationName(st, tile, !(GetAirport(airport_type)->flags & AirportFTAClass::AIRPLANES) ? STATIONNAMING_HELIPORT : STATIONNAMING_AIRPORT);
    02221
    02222       if (Company::IsValidID(_current_company)) {
    02223         SetBit(st->town->have_ratings, _current_company);
    02224       }
    02225     }
    02226   }
    02227
    02228   for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
    02229     cost.AddCost(_price[PR_BUILD_STATION_AIRPORT]);
    02230   }
    02231
    02232   if (flags & DC_EXEC) {
    02233     /* Always add the noise, so there will be no need to recalculate when option toggles */
    02234     nearest->noise_reached += newnoise_level;
    02235
    02236     st->AddFacility(FACIL_AIRPORT, tile);
    02237     st->airport.type = airport_type;
    02238     st->airport.layout = layout;
    02239     st->airport.flags = 0;
    02240     st->airport.rotation = rotation;
    02241
    02242     st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TRY);
    02243
    02244     for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
    02245       MakeAirport(iter, st->owner, st->index, iter.GetStationGfx(), WATER_CLASS_INVALID);
    02246       SetStationTileRandomBits(iter, GB(Random(), 0, 4));
    02247       st->airport.Add(iter);
    02248
    02249       if (AirportTileSpec::Get(GetTranslatedAirportTileID(iter.GetStationGfx()))->animation.status != ANIM_STATUS_NO_ANIMATION) AddAnimatedTile(iter);
    02250     }
    02251
    02252     /* Only call the animation trigger after all tiles have been built */
    02253     for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
    02254       AirportTileAnimationTrigger(st, iter, AAT_BUILT);
    02255     }
    02256
    02257     UpdateAirplanesOnNewStation(st);
    02258
    02259     Company::Get(st->owner)->infrastructure.airport++;
    02260     DirtyCompanyInfrastructureWindows(st->owner);
    02261
    02262     st->UpdateVirtCoord();
    02263     UpdateStationAcceptance(st, false);
    02264     st->RecomputeIndustriesNear();
    02265     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02266     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02267     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_PLANES);
    02268
    02269     if (_settings_game.economy.station_noise_level) {
    02270       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02271     }
    02272   }
    02273
    02274   return cost;
    02275 }
    02276
    02283 static CommandCost RemoveAirport(TileIndex tile, DoCommandFlag flags)
    02284 {
    02285   Station *st = Station::GetByTile(tile);
    02286
    02287   if (_current_company != OWNER_WATER) {
    02288     CommandCost ret = CheckOwnership(st->owner);
    02289     if (ret.Failed()) return ret;
    02290   }
    02291
    02292   tile = st->airport.tile;
    02293
    02294   CommandCost cost(EXPENSES_CONSTRUCTION);
    02295
    02296   const Aircraft *a;
    02297   FOR_ALL_AIRCRAFT(a) {
    02298     if (!a->IsNormalAircraft()) continue;
    02299     if (a->targetairport == st->index && a->state != FLYING) return CMD_ERROR;
    02300   }
    02301
    02302   if (flags & DC_EXEC) {
    02303     const AirportSpec *as = st->airport.GetSpec();
    02304     /* The noise level is the noise from the airport and reduce it to account for the distance to the town center.
    02305      * And as for construction, always remove it, even if the setting is not set, in order to avoid the
    02306      * need of recalculation */
    02307     AirportTileIterator it(st);
    02308     Town *nearest = AirportGetNearestTown(as, it);
    02309     nearest->noise_reached -= GetAirportNoiseLevelForTown(as, it, nearest->xy);
    02310   }
    02311
    02312   TILE_AREA_LOOP(tile_cur, st->airport) {
    02313     if (!st->TileBelongsToAirport(tile_cur)) continue;
    02314
    02315     CommandCost ret = EnsureNoVehicleOnGround(tile_cur);
    02316     if (ret.Failed()) return ret;
    02317
    02318     cost.AddCost(_price[PR_CLEAR_STATION_AIRPORT]);
    02319
    02320     if (flags & DC_EXEC) {
    02321       if (IsHangarTile(tile_cur)) OrderBackup::Reset(tile_cur, false);
    02322       DeleteAnimatedTile(tile_cur);
    02323       DoClearSquare(tile_cur);
    02324       DeleteNewGRFInspectWindow(GSF_AIRPORTTILES, tile_cur);
    02325     }
    02326   }
    02327
    02328   if (flags & DC_EXEC) {
    02329     /* Clear the persistent storage. */
    02330     delete st->airport.psa;
    02331
    02332     for (uint i = 0; i < st->airport.GetNumHangars(); ++i) {
    02333       DeleteWindowById(
    02334         WC_VEHICLE_DEPOT, st->airport.GetHangarTile(i)
    02335       );
    02336     }
    02337
    02338     st->rect.AfterRemoveRect(st, st->airport);
    02339
    02340     st->airport.Clear();
    02341     st->facilities &= ~FACIL_AIRPORT;
    02342
    02343     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_PLANES);
    02344
    02345     if (_settings_game.economy.station_noise_level) {
    02346       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02347     }
    02348
    02349     Company::Get(st->owner)->infrastructure.airport--;
    02350     DirtyCompanyInfrastructureWindows(st->owner);
    02351
    02352     st->UpdateVirtCoord();
    02353     st->RecomputeIndustriesNear();
    02354     DeleteStationIfEmpty(st);
    02355     DeleteNewGRFInspectWindow(GSF_AIRPORTS, st->index);
    02356   }
    02357
    02358   return cost;
    02359 }
    02360
    02367 bool HasStationInUse(StationID station, bool include_company, CompanyID company)
    02368 {
    02369   const Vehicle *v;
    02370   FOR_ALL_VEHICLES(v) {
    02371     if ((v->owner == company) == include_company) {
    02372       const Order *order;
    02373       FOR_VEHICLE_ORDERS(v, order) {
    02374         if ((order->IsType(OT_GOTO_STATION) || order->IsType(OT_GOTO_WAYPOINT)) && order->GetDestination() == station) {
    02375           return true;
    02376         }
    02377       }
    02378     }
    02379   }
    02380   return false;
    02381 }
    02382
    02383 static const TileIndexDiffC _dock_tileoffs_chkaround[] = {
    02384   {-1,  0},
    02385   { 0,  0},
    02386   { 0,  0},
    02387   { 0, -1}
    02388 };
    02389 static const byte _dock_w_chk[4] = { 2, 1, 2, 1 };
    02390 static const byte _dock_h_chk[4] = { 1, 2, 1, 2 };
    02391
    02401 CommandCost CmdBuildDock(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02402 {
    02403   StationID station_to_join = GB(p2, 16, 16);
    02404   bool reuse = (station_to_join != NEW_STATION);
    02405   if (!reuse) station_to_join = INVALID_STATION;
    02406   bool distant_join = (station_to_join != INVALID_STATION);
    02407
    02408   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    02409
    02410   DiagDirection direction = GetInclinedSlopeDirection(GetTileSlope(tile));
    02411   if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02412   direction = ReverseDiagDir(direction);
    02413
    02414   /* Docks cannot be placed on rapids */
    02415   if (HasTileWaterGround(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02416
    02417   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
    02418   if (ret.Failed()) return ret;
    02419
    02420   if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02421
    02422   ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    02423   if (ret.Failed()) return ret;
    02424
    02425   TileIndex tile_cur = tile + TileOffsByDiagDir(direction);
    02426
    02427   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur) != SLOPE_FLAT) {
    02428     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02429   }
    02430
    02431   if (MayHaveBridgeAbove(tile_cur) && IsBridgeAbove(tile_cur)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02432
    02433   /* Get the water class of the water tile before it is cleared.*/
    02434   WaterClass wc = GetWaterClass(tile_cur);
    02435
    02436   ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    02437   if (ret.Failed()) return ret;
    02438
    02439   tile_cur += TileOffsByDiagDir(direction);
    02440   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur) != SLOPE_FLAT) {
    02441     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02442   }
    02443
    02444   /* middle */
    02445   Station *st = NULL;
    02446   ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p1, 0),
    02447       TileArea(tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02448           _dock_w_chk[direction], _dock_h_chk[direction]), &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   /* Find a deleted station close to us */
    02455   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    02456
    02457   if (st != NULL) {
    02458     if (st->owner != _current_company) {
    02459       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    02460     }
    02461
    02462     CommandCost ret = st->rect.BeforeAddRect(
    02463         tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02464         _dock_w_chk[direction], _dock_h_chk[direction], StationRect::ADD_TEST);
    02465     if (ret.Failed()) return ret;
    02466
    02467     if (st->dock_tile != INVALID_TILE) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_DOCK);
    02468   } else {
    02469     /* allocate and initialize new station */
    02470     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    02471
    02472     if (flags & DC_EXEC) {
    02473       st = new Station(tile);
    02474
    02475       st->town = ClosestTownFromTile(tile, UINT_MAX);
    02476       st->string_id = GenerateStationName(st, tile, STATIONNAMING_DOCK);
    02477
    02478       if (Company::IsValidID(_current_company)) {
    02479         SetBit(st->town->have_ratings, _current_company);
    02480       }
    02481     }
    02482   }
    02483
    02484   if (flags & DC_EXEC) {
    02485     st->dock_tile = tile;
    02486     st->AddFacility(FACIL_DOCK, tile);
    02487
    02488     st->rect.BeforeAddRect(
    02489         tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02490         _dock_w_chk[direction], _dock_h_chk[direction], StationRect::ADD_TRY);
    02491
    02492     /* If the water part of the dock is on a canal, update infrastructure counts.
    02493      * This is needed as we've unconditionally cleared that tile before. */
    02494     if (wc == WATER_CLASS_CANAL) {
    02495       Company::Get(st->owner)->infrastructure.water++;
    02496     }
    02497     Company::Get(st->owner)->infrastructure.station += 2;
    02498     DirtyCompanyInfrastructureWindows(st->owner);
    02499
    02500     MakeDock(tile, st->owner, st->index, direction, wc);
    02501
    02502     st->UpdateVirtCoord();
    02503     UpdateStationAcceptance(st, false);
    02504     st->RecomputeIndustriesNear();
    02505     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02506     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02507     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_SHIPS);
    02508   }
    02509
    02510   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_STATION_DOCK]);
    02511 }
    02512
    02519 static CommandCost RemoveDock(TileIndex tile, DoCommandFlag flags)
    02520 {
    02521   Station *st = Station::GetByTile(tile);
    02522   CommandCost ret = CheckOwnership(st->owner);
    02523   if (ret.Failed()) return ret;
    02524
    02525   TileIndex docking_location = TILE_ADD(st->dock_tile, ToTileIndexDiff(GetDockOffset(st->dock_tile)));
    02526
    02527   TileIndex tile1 = st->dock_tile;
    02528   TileIndex tile2 = tile1 + TileOffsByDiagDir(GetDockDirection(tile1));
    02529
    02530   ret = EnsureNoVehicleOnGround(tile1);
    02531   if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile2);
    02532   if (ret.Failed()) return ret;
    02533
    02534   if (flags & DC_EXEC) {
    02535     DoClearSquare(tile1);
    02536     MarkTileDirtyByTile(tile1);
    02537     MakeWaterKeepingClass(tile2, st->owner);
    02538
    02539     st->rect.AfterRemoveTile(st, tile1);
    02540     st->rect.AfterRemoveTile(st, tile2);
    02541
    02542     st->dock_tile = INVALID_TILE;
    02543     st->facilities &= ~FACIL_DOCK;
    02544
    02545     Company::Get(st->owner)->infrastructure.station -= 2;
    02546     DirtyCompanyInfrastructureWindows(st->owner);
    02547
    02548     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_SHIPS);
    02549     st->UpdateVirtCoord();
    02550     st->RecomputeIndustriesNear();
    02551     DeleteStationIfEmpty(st);
    02552
    02553     /* All ships that were going to our station, can't go to it anymore.
    02554      * Just clear the order, then automatically the next appropriate order
    02555      * will be selected and in case of no appropriate order it will just
    02556      * wander around the world. */
    02557     Ship *s;
    02558     FOR_ALL_SHIPS(s) {
    02559       if (s->current_order.IsType(OT_LOADING) && s->tile == docking_location) {
    02560         s->LeaveStation();
    02561       }
    02562
    02563       if (s->dest_tile == docking_location) {
    02564         s->dest_tile = 0;
    02565         s->current_order.Free();
    02566       }
    02567     }
    02568   }
    02569
    02570   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_STATION_DOCK]);
    02571 }
    02572
    02573 #include "table/station_land.h"
    02574
    02575 const DrawTileSprites *GetStationTileLayout(StationType st, byte gfx)
    02576 {
    02577   return &_station_display_datas[st][gfx];
    02578 }
    02579
    02580 static void DrawTile_Station(TileInfo *ti)
    02581 {
    02582   const NewGRFSpriteLayout *layout = NULL;
    02583   DrawTileSprites tmp_rail_layout;
    02584   const DrawTileSprites *t = NULL;
    02585   RoadTypes roadtypes;
    02586   int32 total_offset;
    02587   const RailtypeInfo *rti = NULL;
    02588   uint32 relocation = 0;
    02589   uint32 ground_relocation = 0;
    02590   BaseStation *st = NULL;
    02591   const StationSpec *statspec = NULL;
    02592   uint tile_layout = 0;
    02593
    02594   if (HasStationRail(ti->tile)) {
    02595     rti = GetRailTypeInfo(GetRailType(ti->tile));
    02596     roadtypes = ROADTYPES_NONE;
    02597     total_offset = rti->GetRailtypeSpriteOffset();
    02598
    02599     if (IsCustomStationSpecIndex(ti->tile)) {
    02600       /* look for customization */
    02601       st = BaseStation::GetByTile(ti->tile);
    02602       statspec = st->speclist[GetCustomStationSpecIndex(ti->tile)].spec;
    02603
    02604       if (statspec != NULL) {
    02605         tile_layout = GetStationGfx(ti->tile);
    02606
    02607         if (HasBit(statspec->callback_mask, CBM_STATION_SPRITE_LAYOUT)) {
    02608           uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0, 0, statspec, st, ti->tile);
    02609           if (callback != CALLBACK_FAILED) tile_layout = (callback & ~1) + GetRailStationAxis(ti->tile);
    02610         }
    02611
    02612         /* Ensure the chosen tile layout is valid for this custom station */
    02613         if (statspec->renderdata != NULL) {
    02614           layout = &statspec->renderdata[tile_layout < statspec->tiles ? tile_layout : (uint)GetRailStationAxis(ti->tile)];
    02615           if (!layout->NeedsPreprocessing()) {
    02616             t = layout;
    02617             layout = NULL;
    02618           }
    02619         }
    02620       }
    02621     }
    02622   } else {
    02623     roadtypes = IsRoadStop(ti->tile) ? GetRoadTypes(ti->tile) : ROADTYPES_NONE;
    02624     total_offset = 0;
    02625   }
    02626
    02627   StationGfx gfx = GetStationGfx(ti->tile);
    02628   if (IsAirport(ti->tile)) {
    02629     gfx = GetAirportGfx(ti->tile);
    02630     if (gfx >= NEW_AIRPORTTILE_OFFSET) {
    02631       const AirportTileSpec *ats = AirportTileSpec::Get(gfx);
    02632       if (ats->grf_prop.spritegroup[0] != NULL && DrawNewAirportTile(ti, Station::GetByTile(ti->tile), gfx, ats)) {
    02633         return;
    02634       }
    02635       /* No sprite group (or no valid one) found, meaning no graphics associated.
    02636        * Use the substitute one instead */
    02637       assert(ats->grf_prop.subst_id != INVALID_AIRPORTTILE);
    02638       gfx = ats->grf_prop.subst_id;
    02639     }
    02640     switch (gfx) {
    02641       case APT_RADAR_GRASS_FENCE_SW:
    02642         t = &_station_display_datas_airport_radar_grass_fence_sw[GetAnimationFrame(ti->tile)];
    02643         break;
    02644       case APT_GRASS_FENCE_NE_FLAG:
    02645         t = &_station_display_datas_airport_flag_grass_fence_ne[GetAnimationFrame(ti->tile)];
    02646         break;
    02647       case APT_RADAR_FENCE_SW:
    02648         t = &_station_display_datas_airport_radar_fence_sw[GetAnimationFrame(ti->tile)];
    02649         break;
    02650       case APT_RADAR_FENCE_NE:
    02651         t = &_station_display_datas_airport_radar_fence_ne[GetAnimationFrame(ti->tile)];
    02652         break;
    02653       case APT_GRASS_FENCE_NE_FLAG_2:
    02654         t = &_station_display_datas_airport_flag_grass_fence_ne_2[GetAnimationFrame(ti->tile)];
    02655         break;
    02656     }
    02657   }
    02658
    02659   Owner owner = GetTileOwner(ti->tile);
    02660
    02661   PaletteID palette;
    02662   if (Company::IsValidID(owner)) {
    02663     palette = COMPANY_SPRITE_COLOUR(owner);
    02664   } else {
    02665     /* Some stations are not owner by a company, namely oil rigs */
    02666     palette = PALETTE_TO_GREY;
    02667   }
    02668
    02669   if (layout == NULL && (t == NULL || t->seq == NULL)) t = GetStationTileLayout(GetStationType(ti->tile), gfx);
    02670
    02671   /* don't show foundation for docks */
    02672   if (ti->tileh != SLOPE_FLAT && !IsDock(ti->tile)) {
    02673     if (statspec != NULL && HasBit(statspec->flags, SSF_CUSTOM_FOUNDATIONS)) {
    02674       /* Station has custom foundations.
    02675        * Check whether the foundation continues beyond the tile's upper sides. */
    02676       uint edge_info = 0;
    02677       int z;
    02678       Slope slope = GetFoundationPixelSlope(ti->tile, &z);
    02679       if (!HasFoundationNW(ti->tile, slope, z)) SetBit(edge_info, 0);
    02680       if (!HasFoundationNE(ti->tile, slope, z)) SetBit(edge_info, 1);
    02681       SpriteID image = GetCustomStationFoundationRelocation(statspec, st, ti->tile, tile_layout, edge_info);
    02682
    02683       if (HasBit(statspec->flags, SSF_EXTENDED_FOUNDATIONS)) {
    02684         /* Station provides extended foundations. */
    02685
    02686         static const uint8 foundation_parts[] = {
    02687           0, 0, 0, 0, // Invalid,  Invalid,   Invalid,   SLOPE_SW
    02688           0, 1, 2, 3, // Invalid,  SLOPE_EW,  SLOPE_SE,  SLOPE_WSE
    02689           0, 4, 5, 6, // Invalid,  SLOPE_NW,  SLOPE_NS,  SLOPE_NWS
    02690           7, 8, 9     // SLOPE_NE, SLOPE_ENW, SLOPE_SEN
    02691         };
    02692
    02693         AddSortableSpriteToDraw(image + foundation_parts[ti->tileh], PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02694       } else {
    02695         /* Draw simple foundations, built up from 8 possible foundation sprites. */
    02696
    02697         /* Each set bit represents one of the eight composite sprites to be drawn.
    02698          * 'Invalid' entries will not drawn but are included for completeness. */
    02699         static const uint8 composite_foundation_parts[] = {
    02700           /* Invalid  (00000000), Invalid   (11010001), Invalid   (11100100), SLOPE_SW  (11100000) */
    02701              0x00,                0xD1,                 0xE4,                 0xE0,
    02702           /* Invalid  (11001010), SLOPE_EW  (11001001), SLOPE_SE  (11000100), SLOPE_WSE (11000000) */
    02703              0xCA,                0xC9,                 0xC4,                 0xC0,
    02704           /* Invalid  (11010010), SLOPE_NW  (10010001), SLOPE_NS  (11100100), SLOPE_NWS (10100000) */
    02705              0xD2,                0x91,                 0xE4,                 0xA0,
    02706           /* SLOPE_NE (01001010), SLOPE_ENW (00001001), SLOPE_SEN (01000100) */
    02707              0x4A,                0x09,                 0x44
    02708         };
    02709
    02710         uint8 parts = composite_foundation_parts[ti->tileh];
    02711
    02712         /* If foundations continue beyond the tile's upper sides then
    02713          * mask out the last two pieces. */
    02714         if (HasBit(edge_info, 0)) ClrBit(parts, 6);
    02715         if (HasBit(edge_info, 1)) ClrBit(parts, 7);
    02716
    02717         if (parts == 0) {
    02718           /* We always have to draw at least one sprite to make sure there is a boundingbox and a sprite with the
    02719            * correct offset for the childsprites.
    02720            * So, draw the (completely empty) sprite of the default foundations. */
    02721           goto draw_default_foundation;
    02722         }
    02723
    02724         StartSpriteCombine();
    02725         for (int i = 0; i < 8; i++) {
    02726           if (HasBit(parts, i)) {
    02727             AddSortableSpriteToDraw(image + i, PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02728           }
    02729         }
    02730         EndSpriteCombine();
    02731       }
    02732
    02733       OffsetGroundSprite(31, 1);
    02734       ti->z += ApplyPixelFoundationToSlope(FOUNDATION_LEVELED, &ti->tileh);
    02735     } else {
    02736 draw_default_foundation:
    02737       DrawFoundation(ti, FOUNDATION_LEVELED);
    02738     }
    02739   }
    02740
    02741   if (IsBuoy(ti->tile)) {
    02742     DrawWaterClassGround(ti);
    02743     SpriteID sprite = GetCanalSprite(CF_BUOY, ti->tile);
    02744     if (sprite != 0) total_offset = sprite - SPR_IMG_BUOY;
    02745   } else if (IsDock(ti->tile) || (IsOilRig(ti->tile) && IsTileOnWater(ti->tile))) {
    02746     if (ti->tileh == SLOPE_FLAT) {
    02747       DrawWaterClassGround(ti);
    02748     } else {
    02749       assert(IsDock(ti->tile));
    02750       TileIndex water_tile = ti->tile + TileOffsByDiagDir(GetDockDirection(ti->tile));
    02751       WaterClass wc = GetWaterClass(water_tile);
    02752       if (wc == WATER_CLASS_SEA) {
    02753         DrawShoreTile(ti->tileh);
    02754       } else {
    02755         DrawClearLandTile(ti, 3);
    02756       }
    02757     }
    02758   } else {
    02759     if (layout != NULL) {
    02760       /* Sprite layout which needs preprocessing */
    02761       bool separate_ground = HasBit(statspec->flags, SSF_SEPARATE_GROUND);
    02762       uint32 var10_values = layout->PrepareLayout(total_offset, rti->fallback_railtype, 0, 0, separate_ground);
    02763       uint8 var10;
    02764       FOR_EACH_SET_BIT(var10, var10_values) {
    02765         uint32 var10_relocation = GetCustomStationRelocation(statspec, st, ti->tile, var10);
    02766         layout->ProcessRegisters(var10, var10_relocation, separate_ground);
    02767       }
    02768       tmp_rail_layout.seq = layout->GetLayout(&tmp_rail_layout.ground);
    02769       t = &tmp_rail_layout;
    02770       total_offset = 0;
    02771     } else if (statspec != NULL) {
    02772       /* Simple sprite layout */
    02773       ground_relocation = relocation = GetCustomStationRelocation(statspec, st, ti->tile, 0);
    02774       if (HasBit(statspec->flags, SSF_SEPARATE_GROUND)) {
    02775         ground_relocation = GetCustomStationRelocation(statspec, st, ti->tile, 1);
    02776       }
    02777       ground_relocation += rti->fallback_railtype;
    02778     }
    02779
    02780     SpriteID image = t->ground.sprite;
    02781     PaletteID pal  = t->ground.pal;
    02782     if (rti != NULL && rti->UsesOverlay() && (image == SPR_RAIL_TRACK_X || image == SPR_RAIL_TRACK_Y)) {
    02783       SpriteID ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND);
    02784       DrawGroundSprite(SPR_FLAT_GRASS_TILE, PAL_NONE);
    02785       DrawGroundSprite(ground + (image == SPR_RAIL_TRACK_X ? RTO_X : RTO_Y), PAL_NONE);
    02786
    02787       if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationReservation(ti->tile)) {
    02788         SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
    02789         DrawGroundSprite(overlay + (image == SPR_RAIL_TRACK_X ? RTO_X : RTO_Y), PALETTE_CRASH);
    02790       }
    02791     } else {
    02792       image += HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? ground_relocation : total_offset;
    02793       if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += ground_relocation;
    02794       DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, palette));
    02795
    02796       /* PBS debugging, draw reserved tracks darker */
    02797       if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationRail(ti->tile) && HasStationReservation(ti->tile)) {
    02798         const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
    02799         DrawGroundSprite(GetRailStationAxis(ti->tile) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
    02800       }
    02801     }
    02802   }
    02803
    02804   if (HasStationRail(ti->tile) && HasCatenaryDrawn(GetRailType(ti->tile)) && IsStationTileElectrifiable(ti->tile)) DrawCatenary(ti);
    02805
    02806   if (HasBit(roadtypes, ROADTYPE_TRAM)) {
    02807     Axis axis = GetRoadStopDir(ti->tile) == DIAGDIR_NE ? AXIS_X : AXIS_Y;
    02808     DrawGroundSprite((HasBit(roadtypes, ROADTYPE_ROAD) ? SPR_TRAMWAY_OVERLAY : SPR_TRAMWAY_TRAM) + (axis ^ 1), PAL_NONE);
    02809     DrawTramCatenary(ti, axis == AXIS_X ? ROAD_X : ROAD_Y);
    02810   }
    02811
    02812   if (IsRailWaypoint(ti->tile)) {
    02813     /* Don't offset the waypoint graphics; they're always the same. */
    02814     total_offset = 0;
    02815   }
    02816
    02817   DrawRailTileSeq(ti, t, TO_BUILDINGS, total_offset, relocation, palette);
    02818 }
    02819
    02820 void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, RoadType roadtype, int image)
    02821 {
    02822   int32 total_offset = 0;
    02823   PaletteID pal = COMPANY_SPRITE_COLOUR(_local_company);
    02824   const DrawTileSprites *t = GetStationTileLayout(st, image);
    02825   const RailtypeInfo *rti = NULL;
    02826
    02827   if (railtype != INVALID_RAILTYPE) {
    02828     rti = GetRailTypeInfo(railtype);
    02829     total_offset = rti->GetRailtypeSpriteOffset();
    02830   }
    02831
    02832   SpriteID img = t->ground.sprite;
    02833   if ((img == SPR_RAIL_TRACK_X || img == SPR_RAIL_TRACK_Y) && rti->UsesOverlay()) {
    02834     SpriteID ground = GetCustomRailSprite(rti, INVALID_TILE, RTSG_GROUND);
    02835     DrawSprite(SPR_FLAT_GRASS_TILE, PAL_NONE, x, y);
    02836     DrawSprite(ground + (img == SPR_RAIL_TRACK_X ? RTO_X : RTO_Y), PAL_NONE, x, y);
    02837   } else {
    02838     DrawSprite(img + total_offset, HasBit(img, PALETTE_MODIFIER_COLOUR) ? pal : PAL_NONE, x, y);
    02839   }
    02840
    02841   if (roadtype == ROADTYPE_TRAM) {
    02842     DrawSprite(SPR_TRAMWAY_TRAM + (t->ground.sprite == SPR_ROAD_PAVED_STRAIGHT_X ? 1 : 0), PAL_NONE, x, y);
    02843   }
    02844
    02845   /* Default waypoint has no railtype specific sprites */
    02846   DrawRailTileSeqInGUI(x, y, t, st == STATION_WAYPOINT ? 0 : total_offset, 0, pal);
    02847 }
    02848
    02849 static int GetSlopePixelZ_Station(TileIndex tile, uint x, uint y)
    02850 {
    02851   return GetTileMaxPixelZ(tile);
    02852 }
    02853
    02854 static Foundation GetFoundation_Station(TileIndex tile, Slope tileh)
    02855 {
    02856   return FlatteningFoundation(tileh);
    02857 }
    02858
    02859 static void GetTileDesc_Station(TileIndex tile, TileDesc *td)
    02860 {
    02861   td->owner[0] = GetTileOwner(tile);
    02862   if (IsDriveThroughStopTile(tile)) {
    02863     Owner road_owner = INVALID_OWNER;
    02864     Owner tram_owner = INVALID_OWNER;
    02865     RoadTypes rts = GetRoadTypes(tile);
    02866     if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    02867     if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    02868
    02869     /* Is there a mix of owners? */
    02870     if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
    02871         (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
    02872       uint i = 1;
    02873       if (road_owner != INVALID_OWNER) {
    02874         td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
    02875         td->owner[i] = road_owner;
    02876         i++;
    02877       }
    02878       if (tram_owner != INVALID_OWNER) {
    02879         td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
    02880         td->owner[i] = tram_owner;
    02881       }
    02882     }
    02883   }
    02884   td->build_date = BaseStation::GetByTile(tile)->build_date;
    02885
    02886   if (HasStationTileRail(tile)) {
    02887     const StationSpec *spec = GetStationSpec(tile);
    02888
    02889     if (spec != NULL) {
    02890       td->station_class = StationClass::GetName(spec->cls_id);
    02891       td->station_name  = spec->name;
    02892
    02893       if (spec->grf_prop.grffile != NULL) {
    02894         const GRFConfig *gc = GetGRFConfig(spec->grf_prop.grffile->grfid);
    02895         td->grf = gc->GetName();
    02896       }
    02897     }
    02898
    02899     const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
    02900     td->rail_speed = rti->max_speed;
    02901   }
    02902
    02903   if (IsAirport(tile)) {
    02904     const AirportSpec *as = Station::GetByTile(tile)->airport.GetSpec();
    02905     td->airport_class = AirportClass::GetName(as->cls_id);
    02906     td->airport_name = as->name;
    02907
    02908     const AirportTileSpec *ats = AirportTileSpec::GetByTile(tile);
    02909     td->airport_tile_name = ats->name;
    02910
    02911     if (as->grf_prop.grffile != NULL) {
    02912       const GRFConfig *gc = GetGRFConfig(as->grf_prop.grffile->grfid);
    02913       td->grf = gc->GetName();
    02914     } else if (ats->grf_prop.grffile != NULL) {
    02915       const GRFConfig *gc = GetGRFConfig(ats->grf_prop.grffile->grfid);
    02916       td->grf = gc->GetName();
    02917     }
    02918   }
    02919
    02920   StringID str;
    02921   switch (GetStationType(tile)) {
    02922     default: NOT_REACHED();
    02923     case STATION_RAIL:     str = STR_LAI_STATION_DESCRIPTION_RAILROAD_STATION; break;
    02924     case STATION_AIRPORT:
    02925       str = (IsHangar(tile) ? STR_LAI_STATION_DESCRIPTION_AIRCRAFT_HANGAR : STR_LAI_STATION_DESCRIPTION_AIRPORT);
    02926       break;
    02927     case STATION_TRUCK:    str = STR_LAI_STATION_DESCRIPTION_TRUCK_LOADING_AREA; break;
    02928     case STATION_BUS:      str = STR_LAI_STATION_DESCRIPTION_BUS_STATION; break;
    02929     case STATION_OILRIG:   str = STR_INDUSTRY_NAME_OIL_RIG; break;
    02930     case STATION_DOCK:     str = STR_LAI_STATION_DESCRIPTION_SHIP_DOCK; break;
    02931     case STATION_BUOY:     str = STR_LAI_STATION_DESCRIPTION_BUOY; break;
    02932     case STATION_WAYPOINT: str = STR_LAI_STATION_DESCRIPTION_WAYPOINT; break;
    02933   }
    02934   td->str = str;
    02935 }
    02936
    02937
    02938 static TrackStatus GetTileTrackStatus_Station(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
    02939 {
    02940   TrackBits trackbits = TRACK_BIT_NONE;
    02941
    02942   switch (mode) {
    02943     case TRANSPORT_RAIL:
    02944       if (HasStationRail(tile) && !IsStationTileBlocked(tile)) {
    02945         trackbits = TrackToTrackBits(GetRailStationTrack(tile));
    02946       }
    02947       break;
    02948
    02949     case TRANSPORT_WATER:
    02950       /* buoy is coded as a station, it is always on open water */
    02951       if (IsBuoy(tile)) {
    02952         trackbits = TRACK_BIT_ALL;
    02953         /* remove tracks that connect NE map edge */
    02954         if (TileX(tile) == 0) trackbits &= ~(TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_RIGHT);
    02955         /* remove tracks that connect NW map edge */
    02956         if (TileY(tile) == 0) trackbits &= ~(TRACK_BIT_Y | TRACK_BIT_LEFT | TRACK_BIT_UPPER);
    02957       }
    02958       break;
    02959
    02960     case TRANSPORT_ROAD:
    02961       if ((GetRoadTypes(tile) & sub_mode) != 0 && IsRoadStop(tile)) {
    02962         DiagDirection dir = GetRoadStopDir(tile);
    02963         Axis axis = DiagDirToAxis(dir);
    02964
    02965         if (side != INVALID_DIAGDIR) {
    02966           if (axis != DiagDirToAxis(side) || (IsStandardRoadStopTile(tile) && dir != side)) break;
    02967         }
    02968
    02969         trackbits = AxisToTrackBits(axis);
    02970       }
    02971       break;
    02972
    02973     default:
    02974       break;
    02975   }
    02976
    02977   return CombineTrackStatus(TrackBitsToTrackdirBits(trackbits), TRACKDIR_BIT_NONE);
    02978 }
    02979
    02980
    02981 static void TileLoop_Station(TileIndex tile)
    02982 {
    02983   /* FIXME -- GetTileTrackStatus_Station -> animated stationtiles
    02984    * hardcoded.....not good */
    02985   switch (GetStationType(tile)) {
    02986     case STATION_AIRPORT:
    02987       AirportTileAnimationTrigger(Station::GetByTile(tile), tile, AAT_TILELOOP);
    02988       break;
    02989
    02990     case STATION_DOCK:
    02991       if (GetTileSlope(tile) != SLOPE_FLAT) break; // only handle water part
    02992       /* FALL THROUGH */
    02993     case STATION_OILRIG: //(station part)
    02994     case STATION_BUOY:
    02995       TileLoop_Water(tile);
    02996       break;
    02997
    02998     default: break;
    02999   }
    03000 }
    03001
    03002
    03003 static void AnimateTile_Station(TileIndex tile)
    03004 {
    03005   if (HasStationRail(tile)) {
    03006     AnimateStationTile(tile);
    03007     return;
    03008   }
    03009
    03010   if (IsAirport(tile)) {
    03011     AnimateAirportTile(tile);
    03012   }
    03013 }
    03014
    03015
    03016 static bool ClickTile_Station(TileIndex tile)
    03017 {
    03018   const BaseStation *bst = BaseStation::GetByTile(tile);
    03019
    03020   if (bst->facilities & FACIL_WAYPOINT) {
    03021     ShowWaypointWindow(Waypoint::From(bst));
    03022   } else if (IsHangar(tile)) {
    03023     const Station *st = Station::From(bst);
    03024     ShowDepotWindow(st->airport.GetHangarTile(st->airport.GetHangarNum(tile)), VEH_AIRCRAFT);
    03025   } else {
    03026     ShowStationViewWindow(bst->index);
    03027   }
    03028   return true;
    03029 }
    03030
    03031 static VehicleEnterTileStatus VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
    03032 {
    03033   if (v->type == VEH_TRAIN) {
    03034     StationID station_id = GetStationIndex(tile);
    03035     if (!v->current_order.ShouldStopAtStation(v, station_id)) return VETSB_CONTINUE;
    03036     if (!IsRailStation(tile) || !v->IsFrontEngine()) return VETSB_CONTINUE;
    03037
    03038     int station_ahead;
    03039     int station_length;
    03040     int stop = GetTrainStopLocation(station_id, tile, Train::From(v), &station_ahead, &station_length);
    03041
    03042     /* Stop whenever that amount of station ahead + the distance from the
    03043      * begin of the platform to the stop location is longer than the length
    03044      * of the platform. Station ahead 'includes' the current tile where the
    03045      * vehicle is on, so we need to substract that. */
    03046     if (!IsInsideBS(stop + station_ahead, station_length, TILE_SIZE)) return VETSB_CONTINUE;
    03047
    03048     DiagDirection dir = DirToDiagDir(v->direction);
    03049
    03050     x &= 0xF;
    03051     y &= 0xF;
    03052
    03053     if (DiagDirToAxis(dir) != AXIS_X) Swap(x, y);
    03054     if (y == TILE_SIZE / 2) {
    03055       if (dir != DIAGDIR_SE && dir != DIAGDIR_SW) x = TILE_SIZE - 1 - x;
    03056       stop &= TILE_SIZE - 1;
    03057
    03058       if (x == stop) return VETSB_ENTERED_STATION | (VehicleEnterTileStatus)(station_id << VETS_STATION_ID_OFFSET); // enter station
    03059       if (x < stop) {
    03060         uint16 spd;
    03061
    03062         v->vehstatus |= VS_TRAIN_SLOWING;
    03063         spd = max(0, (stop - x) * 20 - 15);
    03064         if (spd < v->cur_speed) v->cur_speed = spd;
    03065       }
    03066     }
    03067   } else if (v->type == VEH_ROAD) {
    03068     RoadVehicle *rv = RoadVehicle::From(v);
    03069     if (rv->state < RVSB_IN_ROAD_STOP && !IsReversingRoadTrackdir((Trackdir)rv->state) && rv->frame == 0) {
    03070       if (IsRoadStop(tile) && rv->IsFrontEngine()) {
    03071         /* Attempt to allocate a parking bay in a road stop */
    03072         return RoadStop::GetByTile(tile, GetRoadStopType(tile))->Enter(rv) ? VETSB_CONTINUE : VETSB_CANNOT_ENTER;
    03073       }
    03074     }
    03075   }
    03076
    03077   return VETSB_CONTINUE;
    03078 }
    03079
    03084 void TriggerWatchedCargoCallbacks(Station *st)
    03085 {
    03086   /* Collect cargoes accepted since the last big tick. */
    03087   uint cargoes = 0;
    03088   for (CargoID cid = 0; cid < NUM_CARGO; cid++) {
    03089     if (HasBit(st->goods[cid].acceptance_pickup, GoodsEntry::GES_ACCEPTED_BIGTICK)) SetBit(cargoes, cid);
    03090   }
    03091
    03092   /* Anything to do? */
    03093   if (cargoes == 0) return;
    03094
    03095   /* Loop over all houses in the catchment. */
    03096   Rect r = st->GetCatchmentRect();
    03097   TileArea ta(TileXY(r.left, r.top), TileXY(r.right, r.bottom));
    03098   TILE_AREA_LOOP(tile, ta) {
    03099     if (IsTileType(tile, MP_HOUSE)) {
    03100       WatchedCargoCallback(tile, cargoes);
    03101     }
    03102   }
    03103 }
    03104
    03111 static bool StationHandleBigTick(BaseStation *st)
    03112 {
    03113   if (!st->IsInUse()) {
    03114     if (++st->delete_ctr >= 8) delete st;
    03115     return false;
    03116   }
    03117
    03118   if (Station::IsExpected(st)) {
    03119     TriggerWatchedCargoCallbacks(Station::From(st));
    03120
    03121     for (CargoID i = 0; i < NUM_CARGO; i++) {
    03122       ClrBit(Station::From(st)->goods[i].acceptance_pickup, GoodsEntry::GES_ACCEPTED_BIGTICK);
    03123     }
    03124   }
    03125
    03126
    03127   if ((st->facilities & FACIL_WAYPOINT) == 0) UpdateStationAcceptance(Station::From(st), true);
    03128
    03129   return true;
    03130 }
    03131
    03132 static inline void byte_inc_sat(byte *p)
    03133 {
    03134   byte b = *p + 1;
    03135   if (b != 0) *p = b;
    03136 }
    03137
    03138 static void UpdateStationRating(Station *st)
    03139 {
    03140   bool waiting_changed = false;
    03141
    03142   byte_inc_sat(&st->time_since_load);
    03143   byte_inc_sat(&st->time_since_unload);
    03144
    03145   const CargoSpec *cs;
    03146   FOR_ALL_CARGOSPECS(cs) {
    03147     GoodsEntry *ge = &st->goods[cs->Index()];
    03148     /* Slowly increase the rating back to his original level in the case we
    03149      *  didn't deliver cargo yet to this station. This happens when a bribe
    03150      *  failed while you didn't moved that cargo yet to a station. */
    03151     if (!HasBit(ge->acceptance_pickup, GoodsEntry::GES_PICKUP) && ge->rating < INITIAL_STATION_RATING) {
    03152       ge->rating++;
    03153     }
    03154
    03155     /* Only change the rating if we are moving this cargo */
    03156     if (HasBit(ge->acceptance_pickup, GoodsEntry::GES_PICKUP)) {
    03157       byte_inc_sat(&ge->days_since_pickup);
    03158
    03159       bool skip = false;
    03160       int rating = 0;
    03161       uint waiting = ge->cargo.Count();
    03162
    03163       /* num_dests is at least 1 if there is any cargo as
    03164        * INVALID_STATION is also a destination.
    03165        */
    03166       uint num_dests = (uint)ge->cargo.Packets()->MapSize();
    03167
    03168       /* Average amount of cargo per next hop, but prefer solitary stations
    03169        * with only one or two next hops. They are allowed to have more
    03170        * cargo waiting per next hop.
    03171        * With manual cargo distribution waiting_avg = waiting / 2 as then
    03172        * INVALID_STATION is the only destination.
    03173        */
    03174       uint waiting_avg = waiting / (num_dests + 1);
    03175
    03176       if (HasBit(cs->callback_mask, CBM_CARGO_STATION_RATING_CALC)) {
    03177         /* Perform custom station rating. If it succeeds the speed, days in transit and
    03178          * waiting cargo ratings must not be executed. */
    03179
    03180         /* NewGRFs expect last speed to be 0xFF when no vehicle has arrived yet. */
    03181         uint last_speed = ge->last_speed;
    03182         if (last_speed == 0) last_speed = 0xFF;
    03183
    03184         uint32 var18 = min(ge->days_since_pickup, 0xFF) | (min(ge->max_waiting_cargo, 0xFFFF) << 8) | (min(last_speed, 0xFF) << 24);
    03185         /* Convert to the 'old' vehicle types */
    03186         uint32 var10 = (st->last_vehicle_type == VEH_INVALID) ? 0x0 : (st->last_vehicle_type + 0x10);
    03187         uint16 callback = GetCargoCallback(CBID_CARGO_STATION_RATING_CALC, var10, var18, cs);
    03188         if (callback != CALLBACK_FAILED) {
    03189           skip = true;
    03190           rating = GB(callback, 0, 14);
    03191
    03192           /* Simulate a 15 bit signed value */
    03193           if (HasBit(callback, 14)) rating -= 0x4000;
    03194         }
    03195       }
    03196
    03197       if (!skip) {
    03198         int b = ge->last_speed - 85;
    03199         if (b >= 0) rating += b >> 2;
    03200
    03201         byte days = ge->days_since_pickup;
    03202         if (st->last_vehicle_type == VEH_SHIP) days >>= 2;
    03203         (days > 21) ||
    03204         (rating += 25, days > 12) ||
    03205         (rating += 25, days > 6) ||
    03206         (rating += 45, days > 3) ||
    03207         (rating += 35, true);
    03208
    03209         (rating -= 90, ge->max_waiting_cargo > 1500) ||
    03210         (rating += 55, ge->max_waiting_cargo > 1000) ||
    03211         (rating += 35, ge->max_waiting_cargo > 600) ||
    03212         (rating += 10, ge->max_waiting_cargo > 300) ||
    03213         (rating += 20, ge->max_waiting_cargo > 100) ||
    03214         (rating += 10, true);
    03215       }
    03216
    03217       if (Company::IsValidID(st->owner) && HasBit(st->town->statues, st->owner)) rating += 26;
    03218
    03219       byte age = ge->last_age;
    03220       (age >= 3) ||
    03221       (rating += 10, age >= 2) ||
    03222       (rating += 10, age >= 1) ||
    03223       (rating += 13, true);
    03224
    03225       {
    03226         int or_ = ge->rating; // old rating
    03227
    03228         /* only modify rating in steps of -2, -1, 0, 1 or 2 */
    03229         ge->rating = rating = or_ + Clamp(Clamp(rating, 0, 255) - or_, -2, 2);
    03230
    03231         /* if rating is <= 64 and more than 100 items waiting on average per destination,
    03232          * remove some random amount of goods from the station */
    03233         if (rating <= 64 && waiting_avg >= 100) {
    03234           int dec = Random() & 0x1F;
    03235           if (waiting_avg < 200) dec &= 7;
    03236           waiting -= (dec + 1) * num_dests;
    03237           waiting_changed = true;
    03238         }
    03239
    03240         /* if rating is <= 127 and there are any items waiting, maybe remove some goods. */
    03241         if (rating <= 127 && waiting != 0) {
    03242           uint32 r = Random();
    03243           if (rating <= (int)GB(r, 0, 7)) {
    03244             /* Need to have int, otherwise it will just overflow etc. */
    03245             waiting = max((int)waiting - (int)((GB(r, 8, 2) - 1) * num_dests), 0);
    03246             waiting_changed = true;
    03247           }
    03248         }
    03249
    03250         /* At some point we really must cap the cargo. Previously this
    03251          * was a strict 4095, but now we'll have a less strict, but
    03252          * increasingly agressive truncation of the amount of cargo. */
    03253         static const uint WAITING_CARGO_THRESHOLD  = 1 << 12;
    03254         static const uint WAITING_CARGO_CUT_FACTOR = 1 <<  6;
    03255         static const uint MAX_WAITING_CARGO        = 1 << 15;
    03256
    03257         if (waiting > WAITING_CARGO_THRESHOLD) {
    03258           uint difference = waiting - WAITING_CARGO_THRESHOLD;
    03259           waiting -= (difference / WAITING_CARGO_CUT_FACTOR);
    03260
    03261           waiting = min(waiting, MAX_WAITING_CARGO);
    03262           waiting_changed = true;
    03263         }
    03264
    03265         if (waiting_changed) {
    03266           /* feed back the exact own waiting cargo at this station for the
    03267            * next rating calculation.
    03268            */
    03269           ge->max_waiting_cargo = 0;
    03270
    03271           /* If truncating also punish the source stations' ratings to
    03272            * decrease the flow of incoming cargo. */
    03273
    03274           StationCargoAmountMap waiting_per_source;
    03275           ge->cargo.CountAndTruncate(waiting, waiting_per_source);
    03276           for (StationCargoAmountMap::iterator i(waiting_per_source.begin()); i != waiting_per_source.end(); ++i) {
    03277             Station *source_station = Station::GetIfValid(i->first);
    03278             if (source_station == NULL) continue;
    03279
    03280             GoodsEntry &source_ge = source_station->goods[cs->Index()];
    03281             source_ge.max_waiting_cargo = max(source_ge.max_waiting_cargo, i->second);
    03282           }
    03283         } else {
    03284           /* if the average number per next hop is low, be more forgiving. */
    03285           ge->max_waiting_cargo = waiting_avg;
    03286         }
    03287       }
    03288     }
    03289   }
    03290
    03291   StationID index = st->index;
    03292   if (waiting_changed) {
    03293     SetWindowDirty(WC_STATION_VIEW, index); // update whole window
    03294   } else {
    03295     SetWindowWidgetDirty(WC_STATION_VIEW, index, WID_SV_ACCEPT_RATING_LIST); // update only ratings list
    03296   }
    03297 }
    03298
    03305 void DeleteStaleFlows(StationID at, CargoID c_id, StationID to)
    03306 {
    03307   FlowStatMap &flows = Station::Get(at)->goods[c_id].flows;
    03308   for (FlowStatMap::iterator f_it = flows.begin(); f_it != flows.end();) {
    03309     FlowStat &s_flows = f_it->second;
    03310     s_flows.EraseShare(to);
    03311     if (s_flows.GetShares()->empty()) {
    03312       flows.erase(f_it++);
    03313     } else {
    03314       ++f_it;
    03315     }
    03316   }
    03317 }
    03318
    03325 uint GetMovingAverageLength(const Station *from, const Station *to)
    03326 {
    03327   return LinkStat::MIN_AVERAGE_LENGTH + (DistanceManhattan(from->xy, to->xy) >> 2);
    03328 }
    03329
    03333 void Station::RunAverages()
    03334 {
    03335   for (int goods_index = 0; goods_index < NUM_CARGO; ++goods_index) {
    03336     LinkStatMap &links = this->goods[goods_index].link_stats;
    03337     for (LinkStatMap::iterator i = links.begin(); i != links.end();) {
    03338       StationID id = i->first;
    03339       if (Station::IsValidID(id)) {
    03340         i->second.Decrease();
    03341         if (i->second.IsValid()) {
    03342           ++i;
    03343         } else {
    03344           DeleteStaleFlows(this->index, goods_index, id);
    03345           this->goods[goods_index].cargo.RerouteStalePackets(id);
    03346           links.erase(i++);
    03347         }
    03348       } else {
    03349         this->goods[goods_index].cargo.RerouteStalePackets(id);
    03350         links.erase(i++);
    03351       }
    03352     }
    03353
    03354     if (_settings_game.linkgraph.GetDistributionType(goods_index) == DT_MANUAL) {
    03355       this->goods[goods_index].flows.clear();
    03356     }
    03357   }
    03358 }
    03359
    03368 void IncreaseStats(Station *st, CargoID cargo, StationID next_station_id, uint capacity, uint usage)
    03369 {
    03370   LinkStatMap &stats = st->goods[cargo].link_stats;
    03371   LinkStatMap::iterator i = stats.find(next_station_id);
    03372   if (i == stats.end()) {
    03373     assert(st->index != next_station_id);
    03374     stats.insert(std::make_pair(next_station_id, LinkStat(
    03375         GetMovingAverageLength(st,
    03376         Station::Get(next_station_id)), capacity,
    03377         usage == UINT_MAX ? 0 : usage)));
    03378   } else {
    03379     if (usage == UINT_MAX) {
    03380       i->second.Refresh(capacity);
    03381     } else {
    03382       assert(capacity >= usage);
    03383       i->second.Increase(capacity, usage);
    03384     }
    03385     assert(i->second.IsValid());
    03386   }
    03387 }
    03388
    03395 void IncreaseStats(Station *st, const Vehicle *front, StationID next_station_id)
    03396 {
    03397   for (const Vehicle *v = front; v != NULL; v = v->Next()) {
    03398     if (v->refit_cap > 0) {
    03399       IncreaseStats(st, v->cargo_type, next_station_id, v->refit_cap, v->cargo.Count());
    03400     }
    03401   }
    03402 }
    03403
    03404 /* called for every station each tick */
    03405 static void StationHandleSmallTick(BaseStation *st)
    03406 {
    03407   if ((st->facilities & FACIL_WAYPOINT) != 0 || !st->IsInUse()) return;
    03408
    03409   byte b = st->delete_ctr + 1;
    03410   if (b >= STATION_RATING_TICKS) b = 0;
    03411   st->delete_ctr = b;
    03412
    03413   if (b == 0) UpdateStationRating(Station::From(st));
    03414 }
    03415
    03416 void OnTick_Station()
    03417 {
    03418   if (_game_mode == GM_EDITOR) return;
    03419
    03420   RunAverages<Station>();
    03421
    03422   BaseStation *st;
    03423   FOR_ALL_BASE_STATIONS(st) {
    03424     StationHandleSmallTick(st);
    03425
    03426     /* Run STATION_ACCEPTANCE_TICKS = 250 tick interval trigger for station animation.
    03427      * Station index is included so that triggers are not all done
    03428      * at the same time. */
    03429     if ((_tick_counter + st->index) % STATION_ACCEPTANCE_TICKS == 0) {
    03430       /* Stop processing this station if it was deleted */
    03431       if (!StationHandleBigTick(st)) continue;
    03432       TriggerStationAnimation(st, st->xy, SAT_250_TICKS);
    03433       if (Station::IsExpected(st)) AirportAnimationTrigger(Station::From(st), AAT_STATION_250_TICKS);
    03434     }
    03435   }
    03436 }
    03437
    03439 void StationMonthlyLoop()
    03440 {
    03441   Station *st;
    03442
    03443   FOR_ALL_STATIONS(st) {
    03444     for (CargoID i = 0; i < NUM_CARGO; i++) {
    03445       GoodsEntry *ge = &st->goods[i];
    03446       SB(ge->acceptance_pickup, GoodsEntry::GES_LAST_MONTH, 1, GB(ge->acceptance_pickup, GoodsEntry::GES_CURRENT_MONTH, 1));
    03447       ClrBit(ge->acceptance_pickup, GoodsEntry::GES_CURRENT_MONTH);
    03448       ge->supply = ge->supply_new;
    03449       ge->supply_new = 0;
    03450     }
    03451   }
    03452 }
    03453
    03454
    03455 void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint radius)
    03456 {
    03457   Station *st;
    03458
    03459   FOR_ALL_STATIONS(st) {
    03460     if (st->owner == owner &&
    03461         DistanceManhattan(tile, st->xy) <= radius) {
    03462       for (CargoID i = 0; i < NUM_CARGO; i++) {
    03463         GoodsEntry *ge = &st->goods[i];
    03464
    03465         if (ge->acceptance_pickup != 0) {
    03466           ge->rating = Clamp(ge->rating + amount, 0, 255);
    03467         }
    03468       }
    03469     }
    03470   }
    03471 }
    03472
    03473 static uint UpdateStationWaiting(Station *st, CargoID type, uint amount, SourceType source_type, SourceID source_id)
    03474 {
    03475   /* We can't allocate a CargoPacket? Then don't do anything
    03476    * at all; i.e. just discard the incoming cargo. */
    03477   if (!CargoPacket::CanAllocateItem()) return 0;
    03478
    03479   GoodsEntry &ge = st->goods[type];
    03480   amount += ge.amount_fract;
    03481   ge.amount_fract = GB(amount, 0, 8);
    03482
    03483   amount >>= 8;
    03484   /* No new "real" cargo item yet. */
    03485   if (amount == 0) return 0;
    03486
    03487   StationID next = ge.GetVia(st->index);
    03488
    03489   ge.cargo.Append(next, new CargoPacket(st->index, st->xy, amount, source_type, source_id));
    03490   ge.supply_new += amount;
    03491
    03492   if (!HasBit(ge.acceptance_pickup, GoodsEntry::GES_PICKUP)) {
    03493     InvalidateWindowData(WC_STATION_LIST, st->index);
    03494     SetBit(ge.acceptance_pickup, GoodsEntry::GES_PICKUP);
    03495   }
    03496
    03497   TriggerStationAnimation(st, st->xy, SAT_NEW_CARGO, type);
    03498   AirportAnimationTrigger(st, AAT_STATION_NEW_CARGO, type);
    03499
    03500   SetWindowDirty(WC_STATION_VIEW, st->index);
    03501   st->MarkTilesDirty(true);
    03502   return amount;
    03503 }
    03504
    03505 static bool IsUniqueStationName(const char *name)
    03506 {
    03507   const Station *st;
    03508
    03509   FOR_ALL_STATIONS(st) {
    03510     if (st->name != NULL && strcmp(st->name, name) == 0) return false;
    03511   }
    03512
    03513   return true;
    03514 }
    03515
    03525 CommandCost CmdRenameStation(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    03526 {
    03527   Station *st = Station::GetIfValid(p1);
    03528   if (st == NULL) return CMD_ERROR;
    03529
    03530   CommandCost ret = CheckOwnership(st->owner);
    03531   if (ret.Failed()) return ret;
    03532
    03533   bool reset = StrEmpty(text);
    03534
    03535   if (!reset) {
    03536     if (Utf8StringLength(text) >= MAX_LENGTH_STATION_NAME_CHARS) return CMD_ERROR;
    03537     if (!IsUniqueStationName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
    03538   }
    03539
    03540   if (flags & DC_EXEC) {
    03541     free(st->name);
    03542     st->name = reset ? NULL : strdup(text);
    03543
    03544     st->UpdateVirtCoord();
    03545     InvalidateWindowData(WC_STATION_LIST, st->owner, 1);
    03546   }
    03547
    03548   return CommandCost();
    03549 }
    03550
    03557 void FindStationsAroundTiles(const TileArea &location, StationList *stations)
    03558 {
    03559   /* area to search = producer plus station catchment radius */
    03560   uint max_rad = (_settings_game.station.modified_catchment ? MAX_CATCHMENT : CA_UNMODIFIED);
    03561
    03562   uint x = TileX(location.tile);
    03563   uint y = TileY(location.tile);
    03564
    03565   uint min_x = (x > max_rad) ? x - max_rad : 0;
    03566   uint max_x = x + location.w + max_rad;
    03567   uint min_y = (y > max_rad) ? y - max_rad : 0;
    03568   uint max_y = y + location.h + max_rad;
    03569
    03570   if (min_x == 0 && _settings_game.construction.freeform_edges) min_x = 1;
    03571   if (min_y == 0 && _settings_game.construction.freeform_edges) min_y = 1;
    03572   if (max_x >= MapSizeX()) max_x = MapSizeX() - 1;
    03573   if (max_y >= MapSizeY()) max_y = MapSizeY() - 1;
    03574
    03575   for (uint cy = min_y; cy < max_y; cy++) {
    03576     for (uint cx = min_x; cx < max_x; cx++) {
    03577       TileIndex cur_tile = TileXY(cx, cy);
    03578       if (!IsTileType(cur_tile, MP_STATION)) continue;
    03579
    03580       Station *st = Station::GetByTile(cur_tile);
    03581       /* st can be NULL in case of waypoints */
    03582       if (st == NULL) continue;
    03583
    03584       if (_settings_game.station.modified_catchment) {
    03585         int rad = st->GetCatchmentRadius();
    03586         int rad_x = cx - x;
    03587         int rad_y = cy - y;
    03588
    03589         if (rad_x < -rad || rad_x >= rad + location.w) continue;
    03590         if (rad_y < -rad || rad_y >= rad + location.h) continue;
    03591       }
    03592
    03593       /* Insert the station in the set. This will fail if it has
    03594        * already been added.
    03595        */
    03596       stations->Include(st);
    03597     }
    03598   }
    03599 }
    03600
    03605 const StationList *StationFinder::GetStations()
    03606 {
    03607   if (this->tile != INVALID_TILE) {
    03608     FindStationsAroundTiles(*this, &this->stations);
    03609     this->tile = INVALID_TILE;
    03610   }
    03611   return &this->stations;
    03612 }
    03613
    03614 uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations)
    03615 {
    03616   /* Return if nothing to do. Also the rounding below fails for 0. */
    03617   if (amount == 0) return 0;
    03618
    03619   Station *st1 = NULL;   // Station with best rating
    03620   Station *st2 = NULL;   // Second best station
    03621   uint best_rating1 = 0; // rating of st1
    03622   uint best_rating2 = 0; // rating of st2
    03623
    03624   for (Station * const *st_iter = all_stations->Begin(); st_iter != all_stations->End(); ++st_iter) {
    03625     Station *st = *st_iter;
    03626
    03627     /* Is the station reserved exclusively for somebody else? */
    03628     if (st->town->exclusive_counter > 0 && st->town->exclusivity != st->owner) continue;
    03629
    03630     if (st->goods[type].rating == 0) continue; // Lowest possible rating, better not to give cargo anymore
    03631
    03632     if (_settings_game.order.selectgoods && st->goods[type].last_speed == 0) continue; // Selectively servicing stations, and not this one
    03633
    03634     if (IsCargoInClass(type, CC_PASSENGERS)) {
    03635       if (st->facilities == FACIL_TRUCK_STOP) continue; // passengers are never served by just a truck stop
    03636     } else {
    03637       if (st->facilities == FACIL_BUS_STOP) continue; // non-passengers are never served by just a bus stop
    03638     }
    03639
    03640     /* This station can be used, add it to st1/st2 */
    03641     if (st1 == NULL || st->goods[type].rating >= best_rating1) {
    03642       st2 = st1; best_rating2 = best_rating1; st1 = st; best_rating1 = st->goods[type].rating;
    03643     } else if (st2 == NULL || st->goods[type].rating >= best_rating2) {
    03644       st2 = st; best_rating2 = st->goods[type].rating;
    03645     }
    03646   }
    03647
    03648   /* no stations around at all? */
    03649   if (st1 == NULL) return 0;
    03650
    03651   /* From now we'll calculate with fractal cargo amounts.
    03652    * First determine how much cargo we really have. */
    03653   amount *= best_rating1 + 1;
    03654
    03655   if (st2 == NULL) {
    03656     /* only one station around */
    03657     return UpdateStationWaiting(st1, type, amount, source_type, source_id);
    03658   }
    03659
    03660   /* several stations around, the best two (highest rating) are in st1 and st2 */
    03661   assert(st1 != NULL);
    03662   assert(st2 != NULL);
    03663   assert(best_rating1 != 0 || best_rating2 != 0);
    03664
    03665   /* Then determine the amount the worst station gets. We do it this way as the
    03666    * best should get a bonus, which in this case is the rounding difference from
    03667    * this calculation. In reality that will mean the bonus will be pretty low.
    03668    * Nevertheless, the best station should always get the most cargo regardless
    03669    * of rounding issues. */
    03670   uint worst_cargo = amount * best_rating2 / (best_rating1 + best_rating2);
    03671   assert(worst_cargo <= (amount - worst_cargo));
    03672
    03673   /* And then send the cargo to the stations! */
    03674   uint moved = UpdateStationWaiting(st1, type, amount - worst_cargo, source_type, source_id);
    03675   /* These two UpdateStationWaiting's can't be in the statement as then the order
    03676    * of execution would be undefined and that could cause desyncs with callbacks. */
    03677   return moved + UpdateStationWaiting(st2, type, worst_cargo, source_type, source_id);
    03678 }
    03679
    03680 void BuildOilRig(TileIndex tile)
    03681 {
    03682   if (!Station::CanAllocateItem()) {
    03683     DEBUG(misc, 0, "Can't allocate station for oilrig at 0x%X, reverting to oilrig only", tile);
    03684     return;
    03685   }
    03686
    03687   Station *st = new Station(tile);
    03688   st->town = ClosestTownFromTile(tile, UINT_MAX);
    03689
    03690   st->string_id = GenerateStationName(st, tile, STATIONNAMING_OILRIG);
    03691
    03692   assert(IsTileType(tile, MP_INDUSTRY));
    03693   DeleteAnimatedTile(tile);
    03694   MakeOilrig(tile, st->index, GetWaterClass(tile));
    03695
    03696   st->owner = OWNER_NONE;
    03697   st->airport.type = AT_OILRIG;
    03698   st->airport.Add(tile);
    03699   st->dock_tile = tile;
    03700   st->facilities = FACIL_AIRPORT | FACIL_DOCK;
    03701   st->build_date = _date;
    03702
    03703   st->rect.BeforeAddTile(tile, StationRect::ADD_FORCE);
    03704
    03705   for (CargoID j = 0; j < NUM_CARGO; j++) {
    03706     st->goods[j].acceptance_pickup = 0;
    03707     st->goods[j].days_since_pickup = 255;
    03708     st->goods[j].rating = INITIAL_STATION_RATING;
    03709     st->goods[j].last_speed = 0;
    03710     st->goods[j].last_age = 255;
    03711   }
    03712
    03713   st->UpdateVirtCoord();
    03714   UpdateStationAcceptance(st, false);
    03715   st->RecomputeIndustriesNear();
    03716 }
    03717
    03718 void DeleteOilRig(TileIndex tile)
    03719 {
    03720   Station *st = Station::GetByTile(tile);
    03721
    03722   MakeWaterKeepingClass(tile, OWNER_NONE);
    03723
    03724   st->dock_tile = INVALID_TILE;
    03725   st->airport.Clear();
    03726   st->facilities &= ~(FACIL_AIRPORT | FACIL_DOCK);
    03727   st->airport.flags = 0;
    03728
    03729   st->rect.AfterRemoveTile(st, tile);
    03730
    03731   st->UpdateVirtCoord();
    03732   st->RecomputeIndustriesNear();
    03733   if (!st->IsInUse()) delete st;
    03734 }
    03735
    03736 static void ChangeTileOwner_Station(TileIndex tile, Owner old_owner, Owner new_owner)
    03737 {
    03738   if (IsRoadStopTile(tile)) {
    03739     for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
    03740       /* Update all roadtypes, no matter if they are present */
    03741       if (GetRoadOwner(tile, rt) == old_owner) {
    03742         if (HasTileRoadType(tile, rt)) {
    03743           /* A drive-through road-stop has always two road bits. No need to dirty windows here, we'll redraw the whole screen anyway. */
    03744           Company::Get(old_owner)->infrastructure.road[rt] -= 2;
    03745           if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.road[rt] += 2;
    03746         }
    03747         SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
    03748       }
    03749     }
    03750   }
    03751
    03752   if (!IsTileOwner(tile, old_owner)) return;
    03753
    03754   if (new_owner != INVALID_OWNER) {
    03755     /* Update company infrastructure counts. Only do it here
    03756      * if the new owner is valid as otherwise the clear
    03757      * command will do it for us. No need to dirty windows
    03758      * here, we'll redraw the whole screen anyway.*/
    03759     Company *old_company = Company::Get(old_owner);
    03760     Company *new_company = Company::Get(new_owner);
    03761
    03762     /* Update counts for underlying infrastructure. */
    03763     switch (GetStationType(tile)) {
    03764       case STATION_RAIL:
    03765       case STATION_WAYPOINT:
    03766         if (!IsStationTileBlocked(tile)) {
    03767           old_company->infrastructure.rail[GetRailType(tile)]--;
    03768           new_company->infrastructure.rail[GetRailType(tile)]++;
    03769         }
    03770         break;
    03771
    03772       case STATION_BUS:
    03773       case STATION_TRUCK:
    03774         /* Road stops were already handled above. */
    03775         break;
    03776
    03777       case STATION_BUOY:
    03778       case STATION_DOCK:
    03779         if (GetWaterClass(tile) == WATER_CLASS_CANAL) {
    03780           old_company->infrastructure.water--;
    03781           new_company->infrastructure.water++;
    03782         }
    03783         break;
    03784
    03785       default:
    03786         break;
    03787     }
    03788
    03789     /* Update station tile count. */
    03790     if (!IsBuoy(tile) && !IsAirport(tile)) {
    03791       old_company->infrastructure.station--;
    03792       new_company->infrastructure.station++;
    03793     }
    03794
    03795     /* for buoys, owner of tile is owner of water, st->owner == OWNER_NONE */
    03796     SetTileOwner(tile, new_owner);
    03797     InvalidateWindowClassesData(WC_STATION_LIST, 0);
    03798   } else {
    03799     if (IsDriveThroughStopTile(tile)) {
    03800       /* Remove the drive-through road stop */
    03801       DoCommand(tile, 1 | 1 << 8, (GetStationType(tile) == STATION_TRUCK) ? ROADSTOP_TRUCK : ROADSTOP_BUS, DC_EXEC | DC_BANKRUPT, CMD_REMOVE_ROAD_STOP);
    03802       assert(IsTileType(tile, MP_ROAD));
    03803       /* Change owner of tile and all roadtypes */
    03804       ChangeTileOwner(tile, old_owner, new_owner);
    03805     } else {
    03806       DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
    03807       /* Set tile owner of water under (now removed) buoy and dock to OWNER_NONE.
    03808        * Update owner of buoy if it was not removed (was in orders).
    03809        * Do not update when owned by OWNER_WATER (sea and rivers). */
    03810       if ((IsTileType(tile, MP_WATER) || IsBuoyTile(tile)) && IsTileOwner(tile, old_owner)) SetTileOwner(tile, OWNER_NONE);
    03811     }
    03812   }
    03813 }
    03814
    03823 static bool CanRemoveRoadWithStop(TileIndex tile, DoCommandFlag flags)
    03824 {
    03825   /* Yeah... water can always remove stops, right? */
    03826   if (_current_company == OWNER_WATER) return true;
    03827
    03828   RoadTypes rts = GetRoadTypes(tile);
    03829   if (HasBit(rts, ROADTYPE_TRAM)) {
    03830     Owner tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    03831     if (tram_owner != OWNER_NONE && CheckOwnership(tram_owner).Failed()) return false;
    03832   }
    03833   if (HasBit(rts, ROADTYPE_ROAD)) {
    03834     Owner road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    03835     if (road_owner != OWNER_TOWN) {
    03836       if (road_owner != OWNER_NONE && CheckOwnership(road_owner).Failed()) return false;
    03837     } else {
    03838       if (CheckAllowRemoveRoad(tile, GetAnyRoadBits(tile, ROADTYPE_ROAD), OWNER_TOWN, ROADTYPE_ROAD, flags).Failed()) return false;
    03839     }
    03840   }
    03841
    03842   return true;
    03843 }
    03844
    03851 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags)
    03852 {
    03853   if (flags & DC_AUTO) {
    03854     switch (GetStationType(tile)) {
    03855       default: break;
    03856       case STATION_RAIL:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_RAILROAD);
    03857       case STATION_WAYPOINT: return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
    03858       case STATION_AIRPORT:  return_cmd_error(STR_ERROR_MUST_DEMOLISH_AIRPORT_FIRST);
    03859       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);
    03860       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);
    03861       case STATION_BUOY:     return_cmd_error(STR_ERROR_BUOY_IN_THE_WAY);
    03862       case STATION_DOCK:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_DOCK_FIRST);
    03863       case STATION_OILRIG:
    03864         SetDParam(1, STR_INDUSTRY_NAME_OIL_RIG);
    03865         return_cmd_error(STR_ERROR_GENERIC_OBJECT_IN_THE_WAY);
    03866     }
    03867   }
    03868
    03869   switch (GetStationType(tile)) {
    03870     case STATION_RAIL:     return RemoveRailStation(tile, flags);
    03871     case STATION_WAYPOINT: return RemoveRailWaypoint(tile, flags);
    03872     case STATION_AIRPORT:  return RemoveAirport(tile, flags);
    03873     case STATION_TRUCK:
    03874       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
    03875         return_cmd_error(STR_ERROR_MUST_DEMOLISH_TRUCK_STATION_FIRST);
    03876       }
    03877       return RemoveRoadStop(tile, flags);
    03878     case STATION_BUS:
    03879       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
    03880         return_cmd_error(STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST);
    03881       }
    03882       return RemoveRoadStop(tile, flags);
    03883     case STATION_BUOY:     return RemoveBuoy(tile, flags);
    03884     case STATION_DOCK:     return RemoveDock(tile, flags);
    03885     default: break;
    03886   }
    03887
    03888   return CMD_ERROR;
    03889 }
    03890
    03891 static CommandCost TerraformTile_Station(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
    03892 {
    03893   if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
    03894     /* TODO: If you implement newgrf callback 149 'land slope check', you have to decide what to do with it here.
    03895      *       TTDP does not call it.
    03896      */
    03897     if (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new)) {
    03898       switch (GetStationType(tile)) {
    03899         case STATION_WAYPOINT:
    03900         case STATION_RAIL: {
    03901           DiagDirection direction = AxisToDiagDir(GetRailStationAxis(tile));
    03902           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03903           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03904           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03905         }
    03906
    03907         case STATION_AIRPORT:
    03908           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03909
    03910         case STATION_TRUCK:
    03911         case STATION_BUS: {
    03912           DiagDirection direction = GetRoadStopDir(tile);
    03913           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03914           if (IsDriveThroughStopTile(tile)) {
    03915             if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03916           }
    03917           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03918         }
    03919
    03920         default: break;
    03921       }
    03922     }
    03923   }
    03924   return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    03925 }
    03926
    03932 uint FlowStat::GetShare(StationID st) const
    03933 {
    03934   uint32 prev = 0;
    03935   for (SharesMap::const_iterator it = this->shares.begin(); it != this->shares.end(); ++it) {
    03936     if (it->second == st) {
    03937       return it->first - prev;
    03938     } else {
    03939       prev = it->first;
    03940     }
    03941   }
    03942   return 0;
    03943 }
    03944
    03950 StationID FlowStat::GetVia(StationID excluded) const
    03951 {
    03952   assert(!this->shares.empty());
    03953   uint max = (--this->shares.end())->first - 1;
    03954   SharesMap::const_iterator it = this->shares.upper_bound(RandomRange(max));
    03955   assert(it != this->shares.end());
    03956   if (it->second != excluded) {
    03957     return it->second;
    03958   } else {
    03959     uint end = it->first;
    03960     if (end - 1 == max) return INVALID_STATION; // only one station in the map
    03961     uint begin = (it == this->shares.begin() ? 0 : (--it)->first);
    03962     uint rand = RandomRange(max - (end - begin));
    03963     if (rand < begin) {
    03964       return this->shares.upper_bound(rand)->second;
    03965     } else {
    03966       return this->shares.upper_bound(rand + (end - begin))->second;
    03967     }
    03968   }
    03969 }
    03970
    03975 void FlowStat::EraseShare(StationID st)
    03976 {
    03977   uint32 removed_shares = 0;
    03978   uint32 last_share = 0;
    03979   SharesMap new_shares;
    03980   for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
    03981     if (it->second == st) {
    03982       removed_shares += it->first - last_share;
    03983     } else {
    03984       new_shares[it->first - removed_shares] = it->second;
    03985     }
    03986     last_share = it->first;
    03987   }
    03988   this->shares.swap(new_shares);
    03989   for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
    03990     assert(it->second != st);
    03991   }
    03992 }
    03993
    03999 uint GoodsEntry::GetSumFlowVia(StationID via) const
    04000 {
    04001   uint ret = 0;
    04002   for (FlowStatMap::const_iterator i = this->flows.begin(); i != this->flows.end(); ++i) {
    04003     ret += i->second.GetShare(via);
    04004   }
    04005   return ret;
    04006 }
    04007
    04008 extern const TileTypeProcs _tile_type_station_procs = {
    04009   DrawTile_Station,           // draw_tile_proc
    04010   GetSlopePixelZ_Station,     // get_slope_z_proc
    04011   ClearTile_Station,          // clear_tile_proc
    04012   NULL,                       // add_accepted_cargo_proc
    04013   GetTileDesc_Station,        // get_tile_desc_proc
    04014   GetTileTrackStatus_Station, // get_tile_track_status_proc
    04015   ClickTile_Station,          // click_tile_proc
    04016   AnimateTile_Station,        // animate_tile_proc
    04017   TileLoop_Station,           // tile_loop_proc
    04018   ChangeTileOwner_Station,    // change_tile_owner_proc
    04019   NULL,                       // add_produced_cargo_proc
    04020   VehicleEnter_Station,       // vehicle_enter_tile_proc
    04021   GetFoundation_Station,      // get_foundation_proc
    04022   TerraformTile_Station,      // terraform_tile_proc
    04023 };