# station_cmd.cpp

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    00001 /* $Id: station_cmd.cpp 26166 2013-12-20 14:57:44Z fonsinchen $ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
    00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
    00008  */
    00009
    00012 #include "stdafx.h"
    00013 #include "aircraft.h"
    00014 #include "bridge_map.h"
    00015 #include "cmd_helper.h"
    00016 #include "viewport_func.h"
    00017 #include "command_func.h"
    00018 #include "town.h"
    00019 #include "news_func.h"
    00020 #include "train.h"
    00021 #include "ship.h"
    00022 #include "roadveh.h"
    00023 #include "industry.h"
    00024 #include "newgrf_cargo.h"
    00025 #include "newgrf_debug.h"
    00026 #include "newgrf_station.h"
    00027 #include "newgrf_canal.h" /* For the buoy */
    00028 #include "pathfinder/yapf/yapf_cache.h"
    00029 #include "road_internal.h" /* For drawing catenary/checking road removal */
    00030 #include "autoslope.h"
    00031 #include "water.h"
    00032 #include "strings_func.h"
    00033 #include "clear_func.h"
    00034 #include "date_func.h"
    00035 #include "vehicle_func.h"
    00036 #include "string_func.h"
    00037 #include "animated_tile_func.h"
    00038 #include "elrail_func.h"
    00039 #include "station_base.h"
    00040 #include "roadstop_base.h"
    00041 #include "newgrf_railtype.h"
    00042 #include "waypoint_base.h"
    00043 #include "waypoint_func.h"
    00044 #include "pbs.h"
    00045 #include "debug.h"
    00046 #include "core/random_func.hpp"
    00047 #include "company_base.h"
    00048 #include "table/airporttile_ids.h"
    00049 #include "newgrf_airporttiles.h"
    00050 #include "order_backup.h"
    00051 #include "newgrf_house.h"
    00052 #include "company_gui.h"
    00053 #include "linkgraph/linkgraph_base.h"
    00054 #include "linkgraph/refresh.h"
    00055 #include "widgets/station_widget.h"
    00056
    00057 #include "table/strings.h"
    00058
    00065 bool IsHangar(TileIndex t)
    00066 {
    00067   assert(IsTileType(t, MP_STATION));
    00068
    00069   /* If the tile isn't an airport there's no chance it's a hangar. */
    00070   if (!IsAirport(t)) return false;
    00071
    00072   const Station *st = Station::GetByTile(t);
    00073   const AirportSpec *as = st->airport.GetSpec();
    00074
    00075   for (uint i = 0; i < as->nof_depots; i++) {
    00076     if (st->airport.GetHangarTile(i) == t) return true;
    00077   }
    00078
    00079   return false;
    00080 }
    00081
    00089 template <class T>
    00090 CommandCost GetStationAround(TileArea ta, StationID closest_station, T **st)
    00091 {
    00092   ta.tile -= TileDiffXY(1, 1);
    00093   ta.w    += 2;
    00094   ta.h    += 2;
    00095
    00096   /* check around to see if there's any stations there */
    00097   TILE_AREA_LOOP(tile_cur, ta) {
    00098     if (IsTileType(tile_cur, MP_STATION)) {
    00099       StationID t = GetStationIndex(tile_cur);
    00100       if (!T::IsValidID(t)) continue;
    00101
    00102       if (closest_station == INVALID_STATION) {
    00103         closest_station = t;
    00104       } else if (closest_station != t) {
    00105         return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00106       }
    00107     }
    00108   }
    00109   *st = (closest_station == INVALID_STATION) ? NULL : T::Get(closest_station);
    00110   return CommandCost();
    00111 }
    00112
    00118 typedef bool (*CMSAMatcher)(TileIndex tile);
    00119
    00126 static int CountMapSquareAround(TileIndex tile, CMSAMatcher cmp)
    00127 {
    00128   int num = 0;
    00129
    00130   for (int dx = -3; dx <= 3; dx++) {
    00131     for (int dy = -3; dy <= 3; dy++) {
    00132       TileIndex t = TileAddWrap(tile, dx, dy);
    00133       if (t != INVALID_TILE && cmp(t)) num++;
    00134     }
    00135   }
    00136
    00137   return num;
    00138 }
    00139
    00145 static bool CMSAMine(TileIndex tile)
    00146 {
    00147   /* No industry */
    00148   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00149
    00150   const Industry *ind = Industry::GetByTile(tile);
    00151
    00152   /* No extractive industry */
    00153   if ((GetIndustrySpec(ind->type)->life_type & INDUSTRYLIFE_EXTRACTIVE) == 0) return false;
    00154
    00155   for (uint i = 0; i < lengthof(ind->produced_cargo); i++) {
    00156     /* The industry extracts something non-liquid, i.e. no oil or plastic, so it is a mine.
    00157      * Also the production of passengers and mail is ignored. */
    00158     if (ind->produced_cargo[i] != CT_INVALID &&
    00159         (CargoSpec::Get(ind->produced_cargo[i])->classes & (CC_LIQUID | CC_PASSENGERS | CC_MAIL)) == 0) {
    00160       return true;
    00161     }
    00162   }
    00163
    00164   return false;
    00165 }
    00166
    00172 static bool CMSAWater(TileIndex tile)
    00173 {
    00174   return IsTileType(tile, MP_WATER) && IsWater(tile);
    00175 }
    00176
    00182 static bool CMSATree(TileIndex tile)
    00183 {
    00184   return IsTileType(tile, MP_TREES);
    00185 }
    00186
    00187 #define M(x) ((x) - STR_SV_STNAME)
    00188
    00189 enum StationNaming {
    00190   STATIONNAMING_RAIL,
    00191   STATIONNAMING_ROAD,
    00192   STATIONNAMING_AIRPORT,
    00193   STATIONNAMING_OILRIG,
    00194   STATIONNAMING_DOCK,
    00195   STATIONNAMING_HELIPORT,
    00196 };
    00197
    00199 struct StationNameInformation {
    00200   uint32 free_names;
    00201   bool *indtypes;
    00202 };
    00203
    00212 static bool FindNearIndustryName(TileIndex tile, void *user_data)
    00213 {
    00214   /* All already found industry types */
    00215   StationNameInformation *sni = (StationNameInformation*)user_data;
    00216   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00217
    00218   /* If the station name is undefined it means that it doesn't name a station */
    00219   IndustryType indtype = GetIndustryType(tile);
    00220   if (GetIndustrySpec(indtype)->station_name == STR_UNDEFINED) return false;
    00221
    00222   /* In all cases if an industry that provides a name is found two of
    00223    * the standard names will be disabled. */
    00224   sni->free_names &= ~(1 << M(STR_SV_STNAME_OILFIELD) | 1 << M(STR_SV_STNAME_MINES));
    00225   return !sni->indtypes[indtype];
    00226 }
    00227
    00228 static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming name_class)
    00229 {
    00230   static const uint32 _gen_station_name_bits[] = {
    00231     0,                                       // STATIONNAMING_RAIL
    00232     0,                                       // STATIONNAMING_ROAD
    00233     1U << M(STR_SV_STNAME_AIRPORT),          // STATIONNAMING_AIRPORT
    00234     1U << M(STR_SV_STNAME_OILFIELD),         // STATIONNAMING_OILRIG
    00235     1U << M(STR_SV_STNAME_DOCKS),            // STATIONNAMING_DOCK
    00236     1U << M(STR_SV_STNAME_HELIPORT),         // STATIONNAMING_HELIPORT
    00237   };
    00238
    00239   const Town *t = st->town;
    00240   uint32 free_names = UINT32_MAX;
    00241
    00242   bool indtypes[NUM_INDUSTRYTYPES];
    00243   memset(indtypes, 0, sizeof(indtypes));
    00244
    00245   const Station *s;
    00246   FOR_ALL_STATIONS(s) {
    00247     if (s != st && s->town == t) {
    00248       if (s->indtype != IT_INVALID) {
    00249         indtypes[s->indtype] = true;
    00250         continue;
    00251       }
    00252       uint str = M(s->string_id);
    00253       if (str <= 0x20) {
    00254         if (str == M(STR_SV_STNAME_FOREST)) {
    00255           str = M(STR_SV_STNAME_WOODS);
    00256         }
    00257         ClrBit(free_names, str);
    00258       }
    00259     }
    00260   }
    00261
    00262   TileIndex indtile = tile;
    00263   StationNameInformation sni = { free_names, indtypes };
    00264   if (CircularTileSearch(&indtile, 7, FindNearIndustryName, &sni)) {
    00265     /* An industry has been found nearby */
    00266     IndustryType indtype = GetIndustryType(indtile);
    00267     const IndustrySpec *indsp = GetIndustrySpec(indtype);
    00268     /* STR_NULL means it only disables oil rig/mines */
    00269     if (indsp->station_name != STR_NULL) {
    00270       st->indtype = indtype;
    00271       return STR_SV_STNAME_FALLBACK;
    00272     }
    00273   }
    00274
    00275   /* Oil rigs/mines name could be marked not free by looking for a near by industry. */
    00276   free_names = sni.free_names;
    00277
    00278   /* check default names */
    00279   uint32 tmp = free_names & _gen_station_name_bits[name_class];
    00280   if (tmp != 0) return STR_SV_STNAME + FindFirstBit(tmp);
    00281
    00282   /* check mine? */
    00283   if (HasBit(free_names, M(STR_SV_STNAME_MINES))) {
    00284     if (CountMapSquareAround(tile, CMSAMine) >= 2) {
    00285       return STR_SV_STNAME_MINES;
    00286     }
    00287   }
    00288
    00289   /* check close enough to town to get central as name? */
    00290   if (DistanceMax(tile, t->xy) < 8) {
    00291     if (HasBit(free_names, M(STR_SV_STNAME))) return STR_SV_STNAME;
    00292
    00293     if (HasBit(free_names, M(STR_SV_STNAME_CENTRAL))) return STR_SV_STNAME_CENTRAL;
    00294   }
    00295
    00296   /* Check lakeside */
    00297   if (HasBit(free_names, M(STR_SV_STNAME_LAKESIDE)) &&
    00298       DistanceFromEdge(tile) < 20 &&
    00299       CountMapSquareAround(tile, CMSAWater) >= 5) {
    00300     return STR_SV_STNAME_LAKESIDE;
    00301   }
    00302
    00303   /* Check woods */
    00304   if (HasBit(free_names, M(STR_SV_STNAME_WOODS)) && (
    00305         CountMapSquareAround(tile, CMSATree) >= 8 ||
    00306         CountMapSquareAround(tile, IsTileForestIndustry) >= 2)
    00307       ) {
    00308     return _settings_game.game_creation.landscape == LT_TROPIC ? STR_SV_STNAME_FOREST : STR_SV_STNAME_WOODS;
    00309   }
    00310
    00311   /* check elevation compared to town */
    00312   int z = GetTileZ(tile);
    00313   int z2 = GetTileZ(t->xy);
    00314   if (z < z2) {
    00315     if (HasBit(free_names, M(STR_SV_STNAME_VALLEY))) return STR_SV_STNAME_VALLEY;
    00316   } else if (z > z2) {
    00317     if (HasBit(free_names, M(STR_SV_STNAME_HEIGHTS))) return STR_SV_STNAME_HEIGHTS;
    00318   }
    00319
    00320   /* check direction compared to town */
    00321   static const int8 _direction_and_table[] = {
    00322     ~( (1 << M(STR_SV_STNAME_WEST))  | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00323     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00324     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00325     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_EAST)) ),
    00326   };
    00327
    00328   free_names &= _direction_and_table[
    00329     (TileX(tile) < TileX(t->xy)) +
    00330     (TileY(tile) < TileY(t->xy)) * 2];
    00331
    00332   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));
    00333   return (tmp == 0) ? STR_SV_STNAME_FALLBACK : (STR_SV_STNAME + FindFirstBit(tmp));
    00334 }
    00335 #undef M
    00336
    00342 static Station *GetClosestDeletedStation(TileIndex tile)
    00343 {
    00344   uint threshold = 8;
    00345   Station *best_station = NULL;
    00346   Station *st;
    00347
    00348   FOR_ALL_STATIONS(st) {
    00349     if (!st->IsInUse() && st->owner == _current_company) {
    00350       uint cur_dist = DistanceManhattan(tile, st->xy);
    00351
    00352       if (cur_dist < threshold) {
    00353         threshold = cur_dist;
    00354         best_station = st;
    00355       }
    00356     }
    00357   }
    00358
    00359   return best_station;
    00360 }
    00361
    00362
    00363 void Station::GetTileArea(TileArea *ta, StationType type) const
    00364 {
    00365   switch (type) {
    00366     case STATION_RAIL:
    00367       *ta = this->train_station;
    00368       return;
    00369
    00370     case STATION_AIRPORT:
    00371       *ta = this->airport;
    00372       return;
    00373
    00374     case STATION_TRUCK:
    00375       *ta = this->truck_station;
    00376       return;
    00377
    00378     case STATION_BUS:
    00379       *ta = this->bus_station;
    00380       return;
    00381
    00382     case STATION_DOCK:
    00383     case STATION_OILRIG:
    00384       ta->tile = this->dock_tile;
    00385       break;
    00386
    00387     default: NOT_REACHED();
    00388   }
    00389
    00390   ta->w = 1;
    00391   ta->h = 1;
    00392 }
    00393
    00397 void Station::UpdateVirtCoord()
    00398 {
    00399   Point pt = RemapCoords2(TileX(this->xy) * TILE_SIZE, TileY(this->xy) * TILE_SIZE);
    00400
    00401   pt.y -= 32 * ZOOM_LVL_BASE;
    00402   if ((this->facilities & FACIL_AIRPORT) && this->airport.type == AT_OILRIG) pt.y -= 16 * ZOOM_LVL_BASE;
    00403
    00404   SetDParam(0, this->index);
    00405   SetDParam(1, this->facilities);
    00406   this->sign.UpdatePosition(pt.x, pt.y, STR_VIEWPORT_STATION);
    00407
    00408   SetWindowDirty(WC_STATION_VIEW, this->index);
    00409 }
    00410
    00412 void UpdateAllStationVirtCoords()
    00413 {
    00414   BaseStation *st;
    00415
    00416   FOR_ALL_BASE_STATIONS(st) {
    00417     st->UpdateVirtCoord();
    00418   }
    00419 }
    00420
    00426 static uint GetAcceptanceMask(const Station *st)
    00427 {
    00428   uint mask = 0;
    00429
    00430   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00431     if (HasBit(st->goods[i].acceptance_pickup, GoodsEntry::GES_ACCEPTANCE)) mask |= 1 << i;
    00432   }
    00433   return mask;
    00434 }
    00435
    00440 static void ShowRejectOrAcceptNews(const Station *st, uint num_items, CargoID *cargo, StringID msg)
    00441 {
    00442   for (uint i = 0; i < num_items; i++) {
    00443     SetDParam(i + 1, CargoSpec::Get(cargo[i])->name);
    00444   }
    00445
    00446   SetDParam(0, st->index);
    00447   AddNewsItem(msg, NT_ACCEPTANCE, NF_INCOLOUR | NF_SMALL, NR_STATION, st->index);
    00448 }
    00449
    00457 CargoArray GetProductionAroundTiles(TileIndex tile, int w, int h, int rad)
    00458 {
    00459   CargoArray produced;
    00460
    00461   int x = TileX(tile);
    00462   int y = TileY(tile);
    00463
    00464   /* expand the region by rad tiles on each side
    00465    * while making sure that we remain inside the board. */
    00466   int x2 = min(x + w + rad, MapSizeX());
    00467   int x1 = max(x - rad, 0);
    00468
    00469   int y2 = min(y + h + rad, MapSizeY());
    00470   int y1 = max(y - rad, 0);
    00471
    00472   assert(x1 < x2);
    00473   assert(y1 < y2);
    00474   assert(w > 0);
    00475   assert(h > 0);
    00476
    00477   TileArea ta(TileXY(x1, y1), TileXY(x2 - 1, y2 - 1));
    00478
    00479   /* Loop over all tiles to get the produced cargo of
    00480    * everything except industries */
    00481   TILE_AREA_LOOP(tile, ta) AddProducedCargo(tile, produced);
    00482
    00483   /* Loop over the industries. They produce cargo for
    00484    * anything that is within 'rad' from their bounding
    00485    * box. As such if you have e.g. a oil well the tile
    00486    * area loop might not hit an industry tile while
    00487    * the industry would produce cargo for the station.
    00488    */
    00489   const Industry *i;
    00490   FOR_ALL_INDUSTRIES(i) {
    00491     if (!ta.Intersects(i->location)) continue;
    00492
    00493     for (uint j = 0; j < lengthof(i->produced_cargo); j++) {
    00494       CargoID cargo = i->produced_cargo[j];
    00495       if (cargo != CT_INVALID) produced[cargo]++;
    00496     }
    00497   }
    00498
    00499   return produced;
    00500 }
    00501
    00510 CargoArray GetAcceptanceAroundTiles(TileIndex tile, int w, int h, int rad, uint32 *always_accepted)
    00511 {
    00512   CargoArray acceptance;
    00513   if (always_accepted != NULL) *always_accepted = 0;
    00514
    00515   int x = TileX(tile);
    00516   int y = TileY(tile);
    00517
    00518   /* expand the region by rad tiles on each side
    00519    * while making sure that we remain inside the board. */
    00520   int x2 = min(x + w + rad, MapSizeX());
    00521   int y2 = min(y + h + rad, MapSizeY());
    00522   int x1 = max(x - rad, 0);
    00523   int y1 = max(y - rad, 0);
    00524
    00525   assert(x1 < x2);
    00526   assert(y1 < y2);
    00527   assert(w > 0);
    00528   assert(h > 0);
    00529
    00530   for (int yc = y1; yc != y2; yc++) {
    00531     for (int xc = x1; xc != x2; xc++) {
    00532       TileIndex tile = TileXY(xc, yc);
    00533       AddAcceptedCargo(tile, acceptance, always_accepted);
    00534     }
    00535   }
    00536
    00537   return acceptance;
    00538 }
    00539
    00545 void UpdateStationAcceptance(Station *st, bool show_msg)
    00546 {
    00547   /* old accepted goods types */
    00548   uint old_acc = GetAcceptanceMask(st);
    00549
    00550   /* And retrieve the acceptance. */
    00551   CargoArray acceptance;
    00552   if (!st->rect.IsEmpty()) {
    00553     acceptance = GetAcceptanceAroundTiles(
    00554       TileXY(st->rect.left, st->rect.top),
    00555       st->rect.right  - st->rect.left + 1,
    00556       st->rect.bottom - st->rect.top  + 1,
    00557       st->GetCatchmentRadius(),
    00558       &st->always_accepted
    00559     );
    00560   }
    00561
    00562   /* Adjust in case our station only accepts fewer kinds of goods */
    00563   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00564     uint amt = acceptance[i];
    00565
    00566     /* Make sure the station can accept the goods type. */
    00567     bool is_passengers = IsCargoInClass(i, CC_PASSENGERS);
    00568     if ((!is_passengers && !(st->facilities & ~FACIL_BUS_STOP)) ||
    00569         (is_passengers && !(st->facilities & ~FACIL_TRUCK_STOP))) {
    00570       amt = 0;
    00571     }
    00572
    00573     GoodsEntry &ge = st->goods[i];
    00574     SB(ge.acceptance_pickup, GoodsEntry::GES_ACCEPTANCE, 1, amt >= 8);
    00575     if (LinkGraph::IsValidID(ge.link_graph)) {
    00576       (*LinkGraph::Get(ge.link_graph))[ge.node].SetDemand(amt / 8);
    00577     }
    00578   }
    00579
    00580   /* Only show a message in case the acceptance was actually changed. */
    00581   uint new_acc = GetAcceptanceMask(st);
    00582   if (old_acc == new_acc) return;
    00583
    00584   /* show a message to report that the acceptance was changed? */
    00585   if (show_msg && st->owner == _local_company && st->IsInUse()) {
    00586     /* List of accept and reject strings for different number of
    00587      * cargo types */
    00588     static const StringID accept_msg[] = {
    00589       STR_NEWS_STATION_NOW_ACCEPTS_CARGO,
    00590       STR_NEWS_STATION_NOW_ACCEPTS_CARGO_AND_CARGO,
    00591     };
    00592     static const StringID reject_msg[] = {
    00593       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO,
    00594       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO_OR_CARGO,
    00595     };
    00596
    00597     /* Array of accepted and rejected cargo types */
    00598     CargoID accepts[2] = { CT_INVALID, CT_INVALID };
    00599     CargoID rejects[2] = { CT_INVALID, CT_INVALID };
    00600     uint num_acc = 0;
    00601     uint num_rej = 0;
    00602
    00603     /* Test each cargo type to see if its acceptance has changed */
    00604     for (CargoID i = 0; i < NUM_CARGO; i++) {
    00605       if (HasBit(new_acc, i)) {
    00606         if (!HasBit(old_acc, i) && num_acc < lengthof(accepts)) {
    00607           /* New cargo is accepted */
    00608           accepts[num_acc++] = i;
    00609         }
    00610       } else {
    00611         if (HasBit(old_acc, i) && num_rej < lengthof(rejects)) {
    00612           /* Old cargo is no longer accepted */
    00613           rejects[num_rej++] = i;
    00614         }
    00615       }
    00616     }
    00617
    00618     /* Show news message if there are any changes */
    00619     if (num_acc > 0) ShowRejectOrAcceptNews(st, num_acc, accepts, accept_msg[num_acc - 1]);
    00620     if (num_rej > 0) ShowRejectOrAcceptNews(st, num_rej, rejects, reject_msg[num_rej - 1]);
    00621   }
    00622
    00623   /* redraw the station view since acceptance changed */
    00624   SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ACCEPT_RATING_LIST);
    00625 }
    00626
    00627 static void UpdateStationSignCoord(BaseStation *st)
    00628 {
    00629   const StationRect *r = &st->rect;
    00630
    00631   if (r->IsEmpty()) return; // no tiles belong to this station
    00632
    00633   /* clamp sign coord to be inside the station rect */
    00634   st->xy = TileXY(ClampU(TileX(st->xy), r->left, r->right), ClampU(TileY(st->xy), r->top, r->bottom));
    00635   st->UpdateVirtCoord();
    00636 }
    00637
    00647 static CommandCost BuildStationPart(Station **st, DoCommandFlag flags, bool reuse, TileArea area, StationNaming name_class)
    00648 {
    00649   /* Find a deleted station close to us */
    00650   if (*st == NULL && reuse) *st = GetClosestDeletedStation(area.tile);
    00651
    00652   if (*st != NULL) {
    00653     if ((*st)->owner != _current_company) {
    00654       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    00655     }
    00656
    00657     CommandCost ret = (*st)->rect.BeforeAddRect(area.tile, area.w, area.h, StationRect::ADD_TEST);
    00658     if (ret.Failed()) return ret;
    00659   } else {
    00660     /* allocate and initialize new station */
    00661     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    00662
    00663     if (flags & DC_EXEC) {
    00664       *st = new Station(area.tile);
    00665
    00666       (*st)->town = ClosestTownFromTile(area.tile, UINT_MAX);
    00667       (*st)->string_id = GenerateStationName(*st, area.tile, name_class);
    00668
    00669       if (Company::IsValidID(_current_company)) {
    00670         SetBit((*st)->town->have_ratings, _current_company);
    00671       }
    00672     }
    00673   }
    00674   return CommandCost();
    00675 }
    00676
    00683 static void DeleteStationIfEmpty(BaseStation *st)
    00684 {
    00685   if (!st->IsInUse()) {
    00686     st->delete_ctr = 0;
    00687     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    00688   }
    00689   /* station remains but it probably lost some parts - station sign should stay in the station boundaries */
    00690   UpdateStationSignCoord(st);
    00691 }
    00692
    00693 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags);
    00694
    00704 CommandCost CheckBuildableTile(TileIndex tile, uint invalid_dirs, int &allowed_z, bool allow_steep, bool check_bridge = true)
    00705 {
    00706   if (check_bridge && MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) {
    00707     return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    00708   }
    00709
    00710   CommandCost ret = EnsureNoVehicleOnGround(tile);
    00711   if (ret.Failed()) return ret;
    00712
    00713   int z;
    00714   Slope tileh = GetTileSlope(tile, &z);
    00715
    00716   /* Prohibit building if
    00717    *   1) The tile is "steep" (i.e. stretches two height levels).
    00718    *   2) The tile is non-flat and the build_on_slopes switch is disabled.
    00719    */
    00720   if ((!allow_steep && IsSteepSlope(tileh)) ||
    00721       ((!_settings_game.construction.build_on_slopes) && tileh != SLOPE_FLAT)) {
    00722     return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00723   }
    00724
    00725   CommandCost cost(EXPENSES_CONSTRUCTION);
    00726   int flat_z = z + GetSlopeMaxZ(tileh);
    00727   if (tileh != SLOPE_FLAT) {
    00728     /* Forbid building if the tile faces a slope in a invalid direction. */
    00729     for (DiagDirection dir = DIAGDIR_BEGIN; dir != DIAGDIR_END; dir++) {
    00730       if (HasBit(invalid_dirs, dir) && !CanBuildDepotByTileh(dir, tileh)) {
    00731         return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00732       }
    00733     }
    00734     cost.AddCost(_price[PR_BUILD_FOUNDATION]);
    00735   }
    00736
    00737   /* The level of this tile must be equal to allowed_z. */
    00738   if (allowed_z < 0) {
    00739     /* First tile. */
    00740     allowed_z = flat_z;
    00741   } else if (allowed_z != flat_z) {
    00742     return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00743   }
    00744
    00745   return cost;
    00746 }
    00747
    00754 CommandCost CheckFlatLand(TileArea tile_area, DoCommandFlag flags)
    00755 {
    00756   CommandCost cost(EXPENSES_CONSTRUCTION);
    00757   int allowed_z = -1;
    00758
    00759   TILE_AREA_LOOP(tile_cur, tile_area) {
    00760     CommandCost ret = CheckBuildableTile(tile_cur, 0, allowed_z, true);
    00761     if (ret.Failed()) return ret;
    00762     cost.AddCost(ret);
    00763
    00764     ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00765     if (ret.Failed()) return ret;
    00766     cost.AddCost(ret);
    00767   }
    00768
    00769   return cost;
    00770 }
    00771
    00786 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)
    00787 {
    00788   CommandCost cost(EXPENSES_CONSTRUCTION);
    00789   int allowed_z = -1;
    00790   uint invalid_dirs = 5 << axis;
    00791
    00792   const StationSpec *statspec = StationClass::Get(spec_class)->GetSpec(spec_index);
    00793   bool slope_cb = statspec != NULL && HasBit(statspec->callback_mask, CBM_STATION_SLOPE_CHECK);
    00794
    00795   TILE_AREA_LOOP(tile_cur, tile_area) {
    00796     CommandCost ret = CheckBuildableTile(tile_cur, invalid_dirs, allowed_z, false);
    00797     if (ret.Failed()) return ret;
    00798     cost.AddCost(ret);
    00799
    00800     if (slope_cb) {
    00801       /* Do slope check if requested. */
    00802       ret = PerformStationTileSlopeCheck(tile_area.tile, tile_cur, statspec, axis, plat_len, numtracks);
    00803       if (ret.Failed()) return ret;
    00804     }
    00805
    00806     /* if station is set, then we have special handling to allow building on top of already existing stations.
    00807      * so station points to INVALID_STATION if we can build on any station.
    00808      * Or it points to a station if we're only allowed to build on exactly that station. */
    00809     if (station != NULL && IsTileType(tile_cur, MP_STATION)) {
    00810       if (!IsRailStation(tile_cur)) {
    00811         return ClearTile_Station(tile_cur, DC_AUTO); // get error message
    00812       } else {
    00813         StationID st = GetStationIndex(tile_cur);
    00814         if (*station == INVALID_STATION) {
    00815           *station = st;
    00816         } else if (*station != st) {
    00817           return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00818         }
    00819       }
    00820     } else {
    00821       /* Rail type is only valid when building a railway station; if station to
    00822        * build isn't a rail station it's INVALID_RAILTYPE. */
    00823       if (rt != INVALID_RAILTYPE &&
    00824           IsPlainRailTile(tile_cur) && !HasSignals(tile_cur) &&
    00825           HasPowerOnRail(GetRailType(tile_cur), rt)) {
    00826         /* Allow overbuilding if the tile:
    00827          *  - has rail, but no signals
    00828          *  - it has exactly one track
    00829          *  - the track is in line with the station
    00830          *  - the current rail type has power on the to-be-built type (e.g. convert normal rail to el rail)
    00831          */
    00832         TrackBits tracks = GetTrackBits(tile_cur);
    00833         Track track = RemoveFirstTrack(&tracks);
    00834         Track expected_track = HasBit(invalid_dirs, DIAGDIR_NE) ? TRACK_X : TRACK_Y;
    00835
    00836         if (tracks == TRACK_BIT_NONE && track == expected_track) {
    00837           /* Check for trains having a reservation for this tile. */
    00838           if (HasBit(GetRailReservationTrackBits(tile_cur), track)) {
    00839             Train *v = GetTrainForReservation(tile_cur, track);
    00840             if (v != NULL) {
    00841               *affected_vehicles.Append() = v;
    00842             }
    00843           }
    00844           CommandCost ret = DoCommand(tile_cur, 0, track, flags, CMD_REMOVE_SINGLE_RAIL);
    00845           if (ret.Failed()) return ret;
    00846           cost.AddCost(ret);
    00847           /* With flags & ~DC_EXEC CmdLandscapeClear would fail since the rail still exists */
    00848           continue;
    00849         }
    00850       }
    00851       ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00852       if (ret.Failed()) return ret;
    00853       cost.AddCost(ret);
    00854     }
    00855   }
    00856
    00857   return cost;
    00858 }
    00859
    00872 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)
    00873 {
    00874   CommandCost cost(EXPENSES_CONSTRUCTION);
    00875   int allowed_z = -1;
    00876
    00877   TILE_AREA_LOOP(cur_tile, tile_area) {
    00878     CommandCost ret = CheckBuildableTile(cur_tile, invalid_dirs, allowed_z, !is_drive_through);
    00879     if (ret.Failed()) return ret;
    00880     cost.AddCost(ret);
    00881
    00882     /* If station is set, then we have special handling to allow building on top of already existing stations.
    00883      * Station points to INVALID_STATION if we can build on any station.
    00884      * Or it points to a station if we're only allowed to build on exactly that station. */
    00885     if (station != NULL && IsTileType(cur_tile, MP_STATION)) {
    00886       if (!IsRoadStop(cur_tile)) {
    00887         return ClearTile_Station(cur_tile, DC_AUTO); // Get error message.
    00888       } else {
    00889         if (is_truck_stop != IsTruckStop(cur_tile) ||
    00890             is_drive_through != IsDriveThroughStopTile(cur_tile)) {
    00891           return ClearTile_Station(cur_tile, DC_AUTO); // Get error message.
    00892         }
    00893         /* Drive-through station in the wrong direction. */
    00894         if (is_drive_through && IsDriveThroughStopTile(cur_tile) && DiagDirToAxis(GetRoadStopDir(cur_tile)) != axis){
    00895           return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    00896         }
    00897         StationID st = GetStationIndex(cur_tile);
    00898         if (*station == INVALID_STATION) {
    00899           *station = st;
    00900         } else if (*station != st) {
    00901           return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00902         }
    00903       }
    00904     } else {
    00905       bool build_over_road = is_drive_through && IsNormalRoadTile(cur_tile);
    00906       /* Road bits in the wrong direction. */
    00907       RoadBits rb = IsNormalRoadTile(cur_tile) ? GetAllRoadBits(cur_tile) : ROAD_NONE;
    00908       if (build_over_road && (rb & (axis == AXIS_X ? ROAD_Y : ROAD_X)) != 0) {
    00909         /* Someone was pedantic and *NEEDED* three fracking different error messages. */
    00910         switch (CountBits(rb)) {
    00911           case 1:
    00912             return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    00913
    00914           case 2:
    00915             if (rb == ROAD_X || rb == ROAD_Y) return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    00916             return_cmd_error(STR_ERROR_DRIVE_THROUGH_CORNER);
    00917
    00918           default: // 3 or 4
    00919             return_cmd_error(STR_ERROR_DRIVE_THROUGH_JUNCTION);
    00920         }
    00921       }
    00922
    00923       RoadTypes cur_rts = IsNormalRoadTile(cur_tile) ? GetRoadTypes(cur_tile) : ROADTYPES_NONE;
    00924       uint num_roadbits = 0;
    00925       if (build_over_road) {
    00926         /* There is a road, check if we can build road+tram stop over it. */
    00927         if (HasBit(cur_rts, ROADTYPE_ROAD)) {
    00928           Owner road_owner = GetRoadOwner(cur_tile, ROADTYPE_ROAD);
    00929           if (road_owner == OWNER_TOWN) {
    00930             if (!_settings_game.construction.road_stop_on_town_road) return_cmd_error(STR_ERROR_DRIVE_THROUGH_ON_TOWN_ROAD);
    00931           } else if (!_settings_game.construction.road_stop_on_competitor_road && road_owner != OWNER_NONE) {
    00932             CommandCost ret = CheckOwnership(road_owner);
    00933             if (ret.Failed()) return ret;
    00934           }
    00935           num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_ROAD));
    00936         }
    00937
    00938         /* There is a tram, check if we can build road+tram stop over it. */
    00939         if (HasBit(cur_rts, ROADTYPE_TRAM)) {
    00940           Owner tram_owner = GetRoadOwner(cur_tile, ROADTYPE_TRAM);
    00941           if (!_settings_game.construction.road_stop_on_competitor_road && tram_owner != OWNER_NONE) {
    00942             CommandCost ret = CheckOwnership(tram_owner);
    00943             if (ret.Failed()) return ret;
    00944           }
    00945           num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_TRAM));
    00946         }
    00947
    00948         /* Take into account existing roadbits. */
    00949         rts |= cur_rts;
    00950       } else {
    00951         ret = DoCommand(cur_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00952         if (ret.Failed()) return ret;
    00953         cost.AddCost(ret);
    00954       }
    00955
    00956       uint roadbits_to_build = CountBits(rts) * 2 - num_roadbits;
    00957       cost.AddCost(_price[PR_BUILD_ROAD] * roadbits_to_build);
    00958     }
    00959   }
    00960
    00961   return cost;
    00962 }
    00963
    00971 CommandCost CanExpandRailStation(const BaseStation *st, TileArea &new_ta, Axis axis)
    00972 {
    00973   TileArea cur_ta = st->train_station;
    00974
    00975   /* determine new size of train station region.. */
    00976   int x = min(TileX(cur_ta.tile), TileX(new_ta.tile));
    00977   int y = min(TileY(cur_ta.tile), TileY(new_ta.tile));
    00978   new_ta.w = max(TileX(cur_ta.tile) + cur_ta.w, TileX(new_ta.tile) + new_ta.w) - x;
    00979   new_ta.h = max(TileY(cur_ta.tile) + cur_ta.h, TileY(new_ta.tile) + new_ta.h) - y;
    00980   new_ta.tile = TileXY(x, y);
    00981
    00982   /* make sure the final size is not too big. */
    00983   if (new_ta.w > _settings_game.station.station_spread || new_ta.h > _settings_game.station.station_spread) {
    00984     return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
    00985   }
    00986
    00987   return CommandCost();
    00988 }
    00989
    00990 static inline byte *CreateSingle(byte *layout, int n)
    00991 {
    00992   int i = n;
    00993   do *layout++ = 0; while (--i);
    00994   layout[((n - 1) >> 1) - n] = 2;
    00995   return layout;
    00996 }
    00997
    00998 static inline byte *CreateMulti(byte *layout, int n, byte b)
    00999 {
    01000   int i = n;
    01001   do *layout++ = b; while (--i);
    01002   if (n > 4) {
    01003     layout[0 - n] = 0;
    01004     layout[n - 1 - n] = 0;
    01005   }
    01006   return layout;
    01007 }
    01008
    01016 void GetStationLayout(byte *layout, int numtracks, int plat_len, const StationSpec *statspec)
    01017 {
    01018   if (statspec != NULL && statspec->lengths >= plat_len &&
    01019       statspec->platforms[plat_len - 1] >= numtracks &&
    01020       statspec->layouts[plat_len - 1][numtracks - 1]) {
    01021     /* Custom layout defined, follow it. */
    01022     memcpy(layout, statspec->layouts[plat_len - 1][numtracks - 1],
    01023       plat_len * numtracks);
    01024     return;
    01025   }
    01026
    01027   if (plat_len == 1) {
    01028     CreateSingle(layout, numtracks);
    01029   } else {
    01030     if (numtracks & 1) layout = CreateSingle(layout, plat_len);
    01031     numtracks >>= 1;
    01032
    01033     while (--numtracks >= 0) {
    01034       layout = CreateMulti(layout, plat_len, 4);
    01035       layout = CreateMulti(layout, plat_len, 6);
    01036     }
    01037   }
    01038 }
    01039
    01051 template <class T, StringID error_message>
    01052 CommandCost FindJoiningBaseStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, T **st)
    01053 {
    01054   assert(*st == NULL);
    01055   bool check_surrounding = true;
    01056
    01057   if (_settings_game.station.adjacent_stations) {
    01058     if (existing_station != INVALID_STATION) {
    01059       if (adjacent && existing_station != station_to_join) {
    01060         /* You can't build an adjacent station over the top of one that
    01061          * already exists. */
    01062         return_cmd_error(error_message);
    01063       } else {
    01064         /* Extend the current station, and don't check whether it will
    01065          * be near any other stations. */
    01066         *st = T::GetIfValid(existing_station);
    01067         check_surrounding = (*st == NULL);
    01068       }
    01069     } else {
    01070       /* There's no station here. Don't check the tiles surrounding this
    01071        * one if the company wanted to build an adjacent station. */
    01072       if (adjacent) check_surrounding = false;
    01073     }
    01074   }
    01075
    01076   if (check_surrounding) {
    01077     /* Make sure there are no similar stations around us. */
    01078     CommandCost ret = GetStationAround(ta, existing_station, st);
    01079     if (ret.Failed()) return ret;
    01080   }
    01081
    01082   /* Distant join */
    01083   if (*st == NULL && station_to_join != INVALID_STATION) *st = T::GetIfValid(station_to_join);
    01084
    01085   return CommandCost();
    01086 }
    01087
    01097 static CommandCost FindJoiningStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
    01098 {
    01099   return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_RAILWAY_STATION_FIRST>(existing_station, station_to_join, adjacent, ta, st);
    01100 }
    01101
    01111 CommandCost FindJoiningWaypoint(StationID existing_waypoint, StationID waypoint_to_join, bool adjacent, TileArea ta, Waypoint **wp)
    01112 {
    01113   return FindJoiningBaseStation<Waypoint, STR_ERROR_MUST_REMOVE_RAILWAYPOINT_FIRST>(existing_waypoint, waypoint_to_join, adjacent, ta, wp);
    01114 }
    01115
    01133 CommandCost CmdBuildRailStation(TileIndex tile_org, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01134 {
    01135   /* Unpack parameters */
    01136   RailType rt    = Extract<RailType, 0, 4>(p1);
    01137   Axis axis      = Extract<Axis, 4, 1>(p1);
    01138   byte numtracks = GB(p1,  8, 8);
    01139   byte plat_len  = GB(p1, 16, 8);
    01140   bool adjacent  = HasBit(p1, 24);
    01141
    01142   StationClassID spec_class = Extract<StationClassID, 0, 8>(p2);
    01143   byte spec_index           = GB(p2, 8, 8);
    01144   StationID station_to_join = GB(p2, 16, 16);
    01145
    01146   /* Does the authority allow this? */
    01147   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile_org, flags);
    01148   if (ret.Failed()) return ret;
    01149
    01150   if (!ValParamRailtype(rt)) return CMD_ERROR;
    01151
    01152   /* Check if the given station class is valid */
    01153   if ((uint)spec_class >= StationClass::GetClassCount() || spec_class == STAT_CLASS_WAYP) return CMD_ERROR;
    01154   if (spec_index >= StationClass::Get(spec_class)->GetSpecCount()) return CMD_ERROR;
    01155   if (plat_len == 0 || numtracks == 0) return CMD_ERROR;
    01156
    01157   int w_org, h_org;
    01158   if (axis == AXIS_X) {
    01159     w_org = plat_len;
    01160     h_org = numtracks;
    01161   } else {
    01162     h_org = plat_len;
    01163     w_org = numtracks;
    01164   }
    01165
    01166   bool reuse = (station_to_join != NEW_STATION);
    01167   if (!reuse) station_to_join = INVALID_STATION;
    01168   bool distant_join = (station_to_join != INVALID_STATION);
    01169
    01170   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01171
    01172   if (h_org > _settings_game.station.station_spread || w_org > _settings_game.station.station_spread) return CMD_ERROR;
    01173
    01174   /* these values are those that will be stored in train_tile and station_platforms */
    01175   TileArea new_location(tile_org, w_org, h_org);
    01176
    01177   /* Make sure the area below consists of clear tiles. (OR tiles belonging to a certain rail station) */
    01178   StationID est = INVALID_STATION;
    01179   SmallVector<Train *, 4> affected_vehicles;
    01180   /* Clear the land below the station. */
    01181   CommandCost cost = CheckFlatLandRailStation(new_location, flags, axis, &est, rt, affected_vehicles, spec_class, spec_index, plat_len, numtracks);
    01182   if (cost.Failed()) return cost;
    01183   /* Add construction expenses. */
    01184   cost.AddCost((numtracks * _price[PR_BUILD_STATION_RAIL] + _price[PR_BUILD_STATION_RAIL_LENGTH]) * plat_len);
    01185   cost.AddCost(numtracks * plat_len * RailBuildCost(rt));
    01186
    01187   Station *st = NULL;
    01188   ret = FindJoiningStation(est, station_to_join, adjacent, new_location, &st);
    01189   if (ret.Failed()) return ret;
    01190
    01191   ret = BuildStationPart(&st, flags, reuse, new_location, STATIONNAMING_RAIL);
    01192   if (ret.Failed()) return ret;
    01193
    01194   if (st != NULL && st->train_station.tile != INVALID_TILE) {
    01195     CommandCost ret = CanExpandRailStation(st, new_location, axis);
    01196     if (ret.Failed()) return ret;
    01197   }
    01198
    01199   /* Check if we can allocate a custom stationspec to this station */
    01200   const StationSpec *statspec = StationClass::Get(spec_class)->GetSpec(spec_index);
    01201   int specindex = AllocateSpecToStation(statspec, st, (flags & DC_EXEC) != 0);
    01202   if (specindex == -1) return_cmd_error(STR_ERROR_TOO_MANY_STATION_SPECS);
    01203
    01204   if (statspec != NULL) {
    01205     /* Perform NewStation checks */
    01206
    01207     /* Check if the station size is permitted */
    01208     if (HasBit(statspec->disallowed_platforms, numtracks - 1) || HasBit(statspec->disallowed_lengths, plat_len - 1)) {
    01209       return CMD_ERROR;
    01210     }
    01211
    01212     /* Check if the station is buildable */
    01213     if (HasBit(statspec->callback_mask, CBM_STATION_AVAIL)) {
    01214       uint16 cb_res = GetStationCallback(CBID_STATION_AVAILABILITY, 0, 0, statspec, NULL, INVALID_TILE);
    01215       if (cb_res != CALLBACK_FAILED && !Convert8bitBooleanCallback(statspec->grf_prop.grffile, CBID_STATION_AVAILABILITY, cb_res)) return CMD_ERROR;
    01216     }
    01217   }
    01218
    01219   if (flags & DC_EXEC) {
    01220     TileIndexDiff tile_delta;
    01221     byte *layout_ptr;
    01222     byte numtracks_orig;
    01223     Track track;
    01224
    01225     st->train_station = new_location;
    01226     st->AddFacility(FACIL_TRAIN, new_location.tile);
    01227
    01228     st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TRY);
    01229
    01230     if (statspec != NULL) {
    01231       /* Include this station spec's animation trigger bitmask
    01232        * in the station's cached copy. */
    01233       st->cached_anim_triggers |= statspec->animation.triggers;
    01234     }
    01235
    01236     tile_delta = (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
    01237     track = AxisToTrack(axis);
    01238
    01239     layout_ptr = AllocaM(byte, numtracks * plat_len);
    01240     GetStationLayout(layout_ptr, numtracks, plat_len, statspec);
    01241
    01242     numtracks_orig = numtracks;
    01243
    01244     Company *c = Company::Get(st->owner);
    01245     TileIndex tile_track = tile_org;
    01246     do {
    01247       TileIndex tile = tile_track;
    01248       int w = plat_len;
    01249       do {
    01250         byte layout = *layout_ptr++;
    01251         if (IsRailStationTile(tile) && HasStationReservation(tile)) {
    01252           /* Check for trains having a reservation for this tile. */
    01253           Train *v = GetTrainForReservation(tile, AxisToTrack(GetRailStationAxis(tile)));
    01254           if (v != NULL) {
    01255             FreeTrainTrackReservation(v);
    01256             *affected_vehicles.Append() = v;
    01257             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01258             for (; v->Next() != NULL; v = v->Next()) { }
    01259             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), false);
    01260           }
    01261         }
    01262
    01263         /* Railtype can change when overbuilding. */
    01264         if (IsRailStationTile(tile)) {
    01265           if (!IsStationTileBlocked(tile)) c->infrastructure.rail[GetRailType(tile)]--;
    01266           c->infrastructure.station--;
    01267         }
    01268
    01269         /* Remove animation if overbuilding */
    01270         DeleteAnimatedTile(tile);
    01271         byte old_specindex = HasStationTileRail(tile) ? GetCustomStationSpecIndex(tile) : 0;
    01272         MakeRailStation(tile, st->owner, st->index, axis, layout & ~1, rt);
    01273         /* Free the spec if we overbuild something */
    01274         DeallocateSpecFromStation(st, old_specindex);
    01275
    01276         SetCustomStationSpecIndex(tile, specindex);
    01277         SetStationTileRandomBits(tile, GB(Random(), 0, 4));
    01278         SetAnimationFrame(tile, 0);
    01279
    01280         if (!IsStationTileBlocked(tile)) c->infrastructure.rail[rt]++;
    01281         c->infrastructure.station++;
    01282
    01283         if (statspec != NULL) {
    01284           /* Use a fixed axis for GetPlatformInfo as our platforms / numtracks are always the right way around */
    01285           uint32 platinfo = GetPlatformInfo(AXIS_X, GetStationGfx(tile), plat_len, numtracks_orig, plat_len - w, numtracks_orig - numtracks, false);
    01286
    01287           /* As the station is not yet completely finished, the station does not yet exist. */
    01288           uint16 callback = GetStationCallback(CBID_STATION_TILE_LAYOUT, platinfo, 0, statspec, NULL, tile);
    01289           if (callback != CALLBACK_FAILED) {
    01290             if (callback < 8) {
    01291               SetStationGfx(tile, (callback & ~1) + axis);
    01292             } else {
    01293               ErrorUnknownCallbackResult(statspec->grf_prop.grffile->grfid, CBID_STATION_TILE_LAYOUT, callback);
    01294             }
    01295           }
    01296
    01297           /* Trigger station animation -- after building? */
    01298           TriggerStationAnimation(st, tile, SAT_BUILT);
    01299         }
    01300
    01301         tile += tile_delta;
    01302       } while (--w);
    01303       AddTrackToSignalBuffer(tile_track, track, _current_company);
    01304       YapfNotifyTrackLayoutChange(tile_track, track);
    01305       tile_track += tile_delta ^ TileDiffXY(1, 1); // perpendicular to tile_delta
    01306     } while (--numtracks);
    01307
    01308     for (uint i = 0; i < affected_vehicles.Length(); ++i) {
    01309       /* Restore reservations of trains. */
    01310       Train *v = affected_vehicles[i];
    01311       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01312       TryPathReserve(v, true, true);
    01313       for (; v->Next() != NULL; v = v->Next()) { }
    01314       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01315     }
    01316
    01317     /* Check whether we need to expand the reservation of trains already on the station. */
    01318     TileArea update_reservation_area;
    01319     if (axis == AXIS_X) {
    01320       update_reservation_area = TileArea(tile_org, 1, numtracks_orig);
    01321     } else {
    01322       update_reservation_area = TileArea(tile_org, numtracks_orig, 1);
    01323     }
    01324
    01325     TILE_AREA_LOOP(tile, update_reservation_area) {
    01326       /* Don't even try to make eye candy parts reserved. */
    01327       if (IsStationTileBlocked(tile)) continue;
    01328
    01329       DiagDirection dir = AxisToDiagDir(axis);
    01330       TileIndexDiff tile_offset = TileOffsByDiagDir(dir);
    01331       TileIndex platform_begin = tile;
    01332       TileIndex platform_end = tile;
    01333
    01334       /* We can only account for tiles that are reachable from this tile, so ignore primarily blocked tiles while finding the platform begin and end. */
    01335       for (TileIndex next_tile = platform_begin - tile_offset; IsCompatibleTrainStationTile(next_tile, platform_begin); next_tile -= tile_offset) {
    01336         platform_begin = next_tile;
    01337       }
    01338       for (TileIndex next_tile = platform_end + tile_offset; IsCompatibleTrainStationTile(next_tile, platform_end); next_tile += tile_offset) {
    01339         platform_end = next_tile;
    01340       }
    01341
    01342       /* If there is at least on reservation on the platform, we reserve the whole platform. */
    01343       bool reservation = false;
    01344       for (TileIndex t = platform_begin; !reservation && t <= platform_end; t += tile_offset) {
    01345         reservation = HasStationReservation(t);
    01346       }
    01347
    01348       if (reservation) {
    01349         SetRailStationPlatformReservation(platform_begin, dir, true);
    01350       }
    01351     }
    01352
    01353     st->MarkTilesDirty(false);
    01354     st->UpdateVirtCoord();
    01355     UpdateStationAcceptance(st, false);
    01356     st->RecomputeIndustriesNear();
    01357     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01358     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01359     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01360     DirtyCompanyInfrastructureWindows(st->owner);
    01361   }
    01362
    01363   return cost;
    01364 }
    01365
    01366 static void MakeRailStationAreaSmaller(BaseStation *st)
    01367 {
    01368   TileArea ta = st->train_station;
    01369
    01370 restart:
    01371
    01372   /* too small? */
    01373   if (ta.w != 0 && ta.h != 0) {
    01374     /* check the left side, x = constant, y changes */
    01375     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(0, i));) {
    01376       /* the left side is unused? */
    01377       if (++i == ta.h) {
    01378         ta.tile += TileDiffXY(1, 0);
    01379         ta.w--;
    01380         goto restart;
    01381       }
    01382     }
    01383
    01384     /* check the right side, x = constant, y changes */
    01385     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(ta.w - 1, i));) {
    01386       /* the right side is unused? */
    01387       if (++i == ta.h) {
    01388         ta.w--;
    01389         goto restart;
    01390       }
    01391     }
    01392
    01393     /* check the upper side, y = constant, x changes */
    01394     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, 0));) {
    01395       /* the left side is unused? */
    01396       if (++i == ta.w) {
    01397         ta.tile += TileDiffXY(0, 1);
    01398         ta.h--;
    01399         goto restart;
    01400       }
    01401     }
    01402
    01403     /* check the lower side, y = constant, x changes */
    01404     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, ta.h - 1));) {
    01405       /* the left side is unused? */
    01406       if (++i == ta.w) {
    01407         ta.h--;
    01408         goto restart;
    01409       }
    01410     }
    01411   } else {
    01412     ta.Clear();
    01413   }
    01414
    01415   st->train_station = ta;
    01416 }
    01417
    01428 template <class T>
    01429 CommandCost RemoveFromRailBaseStation(TileArea ta, SmallVector<T *, 4> &affected_stations, DoCommandFlag flags, Money removal_cost, bool keep_rail)
    01430 {
    01431   /* Count of the number of tiles removed */
    01432   int quantity = 0;
    01433   CommandCost total_cost(EXPENSES_CONSTRUCTION);
    01434   /* Accumulator for the errors seen during clearing. If no errors happen,
    01435    * and the quantity is 0 there is no station. Otherwise it will be one
    01436    * of the other error that got accumulated. */
    01437   CommandCost error;
    01438
    01439   /* Do the action for every tile into the area */
    01440   TILE_AREA_LOOP(tile, ta) {
    01441     /* Make sure the specified tile is a rail station */
    01442     if (!HasStationTileRail(tile)) continue;
    01443
    01444     /* If there is a vehicle on ground, do not allow to remove (flood) the tile */
    01445     CommandCost ret = EnsureNoVehicleOnGround(tile);
    01446     error.AddCost(ret);
    01447     if (ret.Failed()) continue;
    01448
    01449     /* Check ownership of station */
    01450     T *st = T::GetByTile(tile);
    01451     if (st == NULL) continue;
    01452
    01453     if (_current_company != OWNER_WATER) {
    01454       CommandCost ret = CheckOwnership(st->owner);
    01455       error.AddCost(ret);
    01456       if (ret.Failed()) continue;
    01457     }
    01458
    01459     /* If we reached here, the tile is valid so increase the quantity of tiles we will remove */
    01460     quantity++;
    01461
    01462     if (keep_rail || IsStationTileBlocked(tile)) {
    01463       /* Don't refund the 'steel' of the track when we keep the
    01464        *  rail, or when the tile didn't have any rail at all. */
    01465       total_cost.AddCost(-_price[PR_CLEAR_RAIL]);
    01466     }
    01467
    01468     if (flags & DC_EXEC) {
    01469       /* read variables before the station tile is removed */
    01470       uint specindex = GetCustomStationSpecIndex(tile);
    01471       Track track = GetRailStationTrack(tile);
    01472       Owner owner = GetTileOwner(tile);
    01473       RailType rt = GetRailType(tile);
    01474       Train *v = NULL;
    01475
    01476       if (HasStationReservation(tile)) {
    01477         v = GetTrainForReservation(tile, track);
    01478         if (v != NULL) {
    01479           /* Free train reservation. */
    01480           FreeTrainTrackReservation(v);
    01481           if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01482           Vehicle *temp = v;
    01483           for (; temp->Next() != NULL; temp = temp->Next()) { }
    01484           if (IsRailStationTile(temp->tile)) SetRailStationPlatformReservation(temp->tile, TrackdirToExitdir(ReverseTrackdir(temp->GetVehicleTrackdir())), false);
    01485         }
    01486       }
    01487
    01488       bool build_rail = keep_rail && !IsStationTileBlocked(tile);
    01489       if (!build_rail && !IsStationTileBlocked(tile)) Company::Get(owner)->infrastructure.rail[rt]--;
    01490
    01491       DoClearSquare(tile);
    01492       DeleteNewGRFInspectWindow(GSF_STATIONS, tile);
    01493       if (build_rail) MakeRailNormal(tile, owner, TrackToTrackBits(track), rt);
    01494       Company::Get(owner)->infrastructure.station--;
    01495       DirtyCompanyInfrastructureWindows(owner);
    01496
    01497       st->rect.AfterRemoveTile(st, tile);
    01498       AddTrackToSignalBuffer(tile, track, owner);
    01499       YapfNotifyTrackLayoutChange(tile, track);
    01500
    01501       DeallocateSpecFromStation(st, specindex);
    01502
    01503       affected_stations.Include(st);
    01504
    01505       if (v != NULL) {
    01506         /* Restore station reservation. */
    01507         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01508         TryPathReserve(v, true, true);
    01509         for (; v->Next() != NULL; v = v->Next()) { }
    01510         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01511       }
    01512     }
    01513   }
    01514
    01515   if (quantity == 0) return error.Failed() ? error : CommandCost(STR_ERROR_THERE_IS_NO_STATION);
    01516
    01517   for (T **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01518     T *st = *stp;
    01519
    01520     /* now we need to make the "spanned" area of the railway station smaller
    01521      * if we deleted something at the edges.
    01522      * we also need to adjust train_tile. */
    01523     MakeRailStationAreaSmaller(st);
    01524     UpdateStationSignCoord(st);
    01525
    01526     /* if we deleted the whole station, delete the train facility. */
    01527     if (st->train_station.tile == INVALID_TILE) {
    01528       st->facilities &= ~FACIL_TRAIN;
    01529       SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01530       st->UpdateVirtCoord();
    01531       DeleteStationIfEmpty(st);
    01532     }
    01533   }
    01534
    01535   total_cost.AddCost(quantity * removal_cost);
    01536   return total_cost;
    01537 }
    01538
    01550 CommandCost CmdRemoveFromRailStation(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01551 {
    01552   TileIndex end = p1 == 0 ? start : p1;
    01553   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01554
    01555   TileArea ta(start, end);
    01556   SmallVector<Station *, 4> affected_stations;
    01557
    01558   CommandCost ret = RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_STATION_RAIL], HasBit(p2, 0));
    01559   if (ret.Failed()) return ret;
    01560
    01561   /* Do all station specific functions here. */
    01562   for (Station **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01563     Station *st = *stp;
    01564
    01565     if (st->train_station.tile == INVALID_TILE) SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01566     st->MarkTilesDirty(false);
    01567     st->RecomputeIndustriesNear();
    01568   }
    01569
    01570   /* Now apply the rail cost to the number that we deleted */
    01571   return ret;
    01572 }
    01573
    01585 CommandCost CmdRemoveFromRailWaypoint(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01586 {
    01587   TileIndex end = p1 == 0 ? start : p1;
    01588   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01589
    01590   TileArea ta(start, end);
    01591   SmallVector<Waypoint *, 4> affected_stations;
    01592
    01593   return RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_WAYPOINT_RAIL], HasBit(p2, 0));
    01594 }
    01595
    01596
    01604 template <class T>
    01605 CommandCost RemoveRailStation(T *st, DoCommandFlag flags)
    01606 {
    01607   /* Current company owns the station? */
    01608   if (_current_company != OWNER_WATER) {
    01609     CommandCost ret = CheckOwnership(st->owner);
    01610     if (ret.Failed()) return ret;
    01611   }
    01612
    01613   /* determine width and height of platforms */
    01614   TileArea ta = st->train_station;
    01615
    01616   assert(ta.w != 0 && ta.h != 0);
    01617
    01618   CommandCost cost(EXPENSES_CONSTRUCTION);
    01619   /* clear all areas of the station */
    01620   TILE_AREA_LOOP(tile, ta) {
    01621     /* only remove tiles that are actually train station tiles */
    01622     if (!st->TileBelongsToRailStation(tile)) continue;
    01623
    01624     CommandCost ret = EnsureNoVehicleOnGround(tile);
    01625     if (ret.Failed()) return ret;
    01626
    01627     cost.AddCost(_price[PR_CLEAR_STATION_RAIL]);
    01628     if (flags & DC_EXEC) {
    01629       /* read variables before the station tile is removed */
    01630       Track track = GetRailStationTrack(tile);
    01631       Owner owner = GetTileOwner(tile); // _current_company can be OWNER_WATER
    01632       Train *v = NULL;
    01633       if (HasStationReservation(tile)) {
    01634         v = GetTrainForReservation(tile, track);
    01635         if (v != NULL) FreeTrainTrackReservation(v);
    01636       }
    01637       if (!IsStationTileBlocked(tile)) Company::Get(owner)->infrastructure.rail[GetRailType(tile)]--;
    01638       Company::Get(owner)->infrastructure.station--;
    01639       DoClearSquare(tile);
    01640       DeleteNewGRFInspectWindow(GSF_STATIONS, tile);
    01641       AddTrackToSignalBuffer(tile, track, owner);
    01642       YapfNotifyTrackLayoutChange(tile, track);
    01643       if (v != NULL) TryPathReserve(v, true);
    01644     }
    01645   }
    01646
    01647   if (flags & DC_EXEC) {
    01648     st->rect.AfterRemoveRect(st, st->train_station);
    01649
    01650     st->train_station.Clear();
    01651
    01652     st->facilities &= ~FACIL_TRAIN;
    01653
    01654     free(st->speclist);
    01655     st->num_specs = 0;
    01656     st->speclist  = NULL;
    01657     st->cached_anim_triggers = 0;
    01658
    01659     DirtyCompanyInfrastructureWindows(st->owner);
    01660     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
    01661     st->UpdateVirtCoord();
    01662     DeleteStationIfEmpty(st);
    01663   }
    01664
    01665   return cost;
    01666 }
    01667
    01674 static CommandCost RemoveRailStation(TileIndex tile, DoCommandFlag flags)
    01675 {
    01676   /* if there is flooding, remove platforms tile by tile */
    01677   if (_current_company == OWNER_WATER) {
    01678     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_STATION);
    01679   }
    01680
    01681   Station *st = Station::GetByTile(tile);
    01682   CommandCost cost = RemoveRailStation(st, flags);
    01683
    01684   if (flags & DC_EXEC) st->RecomputeIndustriesNear();
    01685
    01686   return cost;
    01687 }
    01688
    01695 static CommandCost RemoveRailWaypoint(TileIndex tile, DoCommandFlag flags)
    01696 {
    01697   /* if there is flooding, remove waypoints tile by tile */
    01698   if (_current_company == OWNER_WATER) {
    01699     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_WAYPOINT);
    01700   }
    01701
    01702   return RemoveRailStation(Waypoint::GetByTile(tile), flags);
    01703 }
    01704
    01705
    01711 static RoadStop **FindRoadStopSpot(bool truck_station, Station *st)
    01712 {
    01713   RoadStop **primary_stop = (truck_station) ? &st->truck_stops : &st->bus_stops;
    01714
    01715   if (*primary_stop == NULL) {
    01716     /* we have no roadstop of the type yet, so write a "primary stop" */
    01717     return primary_stop;
    01718   } else {
    01719     /* there are stops already, so append to the end of the list */
    01720     RoadStop *stop = *primary_stop;
    01721     while (stop->next != NULL) stop = stop->next;
    01722     return &stop->next;
    01723   }
    01724 }
    01725
    01726 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags);
    01727
    01737 static CommandCost FindJoiningRoadStop(StationID existing_stop, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
    01738 {
    01739   return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_ROAD_STOP_FIRST>(existing_stop, station_to_join, adjacent, ta, st);
    01740 }
    01741
    01757 CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01758 {
    01759   bool type = HasBit(p2, 0);
    01760   bool is_drive_through = HasBit(p2, 1);
    01761   RoadTypes rts = Extract<RoadTypes, 2, 2>(p2);
    01762   StationID station_to_join = GB(p2, 16, 16);
    01763   bool reuse = (station_to_join != NEW_STATION);
    01764   if (!reuse) station_to_join = INVALID_STATION;
    01765   bool distant_join = (station_to_join != INVALID_STATION);
    01766
    01767   uint8 width = (uint8)GB(p1, 0, 8);
    01768   uint8 lenght = (uint8)GB(p1, 8, 8);
    01769
    01770   /* Check if the requested road stop is too big */
    01771   if (width > _settings_game.station.station_spread || lenght > _settings_game.station.station_spread) return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
    01772   /* Check for incorrect width / length. */
    01773   if (width == 0 || lenght == 0) return CMD_ERROR;
    01774   /* Check if the first tile and the last tile are valid */
    01775   if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, lenght - 1) == INVALID_TILE) return CMD_ERROR;
    01776
    01777   TileArea roadstop_area(tile, width, lenght);
    01778
    01779   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01780
    01781   if (!HasExactlyOneBit(rts) || !HasRoadTypesAvail(_current_company, rts)) return CMD_ERROR;
    01782
    01783   /* Trams only have drive through stops */
    01784   if (!is_drive_through && HasBit(rts, ROADTYPE_TRAM)) return CMD_ERROR;
    01785
    01786   DiagDirection ddir = Extract<DiagDirection, 6, 2>(p2);
    01787
    01788   /* Safeguard the parameters. */
    01789   if (!IsValidDiagDirection(ddir)) return CMD_ERROR;
    01790   /* If it is a drive-through stop, check for valid axis. */
    01791   if (is_drive_through && !IsValidAxis((Axis)ddir)) return CMD_ERROR;
    01792
    01793   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
    01794   if (ret.Failed()) return ret;
    01795
    01796   /* Total road stop cost. */
    01797   CommandCost cost(EXPENSES_CONSTRUCTION, roadstop_area.w * roadstop_area.h * _price[type ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
    01798   StationID est = INVALID_STATION;
    01799   ret = CheckFlatLandRoadStop(roadstop_area, flags, is_drive_through ? 5 << ddir : 1 << ddir, is_drive_through, type, DiagDirToAxis(ddir), &est, rts);
    01800   if (ret.Failed()) return ret;
    01801   cost.AddCost(ret);
    01802
    01803   Station *st = NULL;
    01804   ret = FindJoiningRoadStop(est, station_to_join, HasBit(p2, 5), roadstop_area, &st);
    01805   if (ret.Failed()) return ret;
    01806
    01807   /* Check if this number of road stops can be allocated. */
    01808   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);
    01809
    01810   ret = BuildStationPart(&st, flags, reuse, roadstop_area, STATIONNAMING_ROAD);
    01811   if (ret.Failed()) return ret;
    01812
    01813   if (flags & DC_EXEC) {
    01814     /* Check every tile in the area. */
    01815     TILE_AREA_LOOP(cur_tile, roadstop_area) {
    01816       RoadTypes cur_rts = GetRoadTypes(cur_tile);
    01817       Owner road_owner = HasBit(cur_rts, ROADTYPE_ROAD) ? GetRoadOwner(cur_tile, ROADTYPE_ROAD) : _current_company;
    01818       Owner tram_owner = HasBit(cur_rts, ROADTYPE_TRAM) ? GetRoadOwner(cur_tile, ROADTYPE_TRAM) : _current_company;
    01819
    01820       if (IsTileType(cur_tile, MP_STATION) && IsRoadStop(cur_tile)) {
    01821         RemoveRoadStop(cur_tile, flags);
    01822       }
    01823
    01824       RoadStop *road_stop = new RoadStop(cur_tile);
    01825       /* Insert into linked list of RoadStops. */
    01826       RoadStop **currstop = FindRoadStopSpot(type, st);
    01827       *currstop = road_stop;
    01828
    01829       if (type) {
    01830         st->truck_station.Add(cur_tile);
    01831       } else {
    01832         st->bus_station.Add(cur_tile);
    01833       }
    01834
    01835       /* Initialize an empty station. */
    01836       st->AddFacility((type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, cur_tile);
    01837
    01838       st->rect.BeforeAddTile(cur_tile, StationRect::ADD_TRY);
    01839
    01840       RoadStopType rs_type = type ? ROADSTOP_TRUCK : ROADSTOP_BUS;
    01841       if (is_drive_through) {
    01842         /* Update company infrastructure counts. If the current tile is a normal
    01843          * road tile, count only the new road bits needed to get a full diagonal road. */
    01844         RoadType rt;
    01845         FOR_EACH_SET_ROADTYPE(rt, cur_rts | rts) {
    01846           Company *c = Company::GetIfValid(rt == ROADTYPE_ROAD ? road_owner : tram_owner);
    01847           if (c != NULL) {
    01848             c->infrastructure.road[rt] += 2 - (IsNormalRoadTile(cur_tile) && HasBit(cur_rts, rt) ? CountBits(GetRoadBits(cur_tile, rt)) : 0);
    01849             DirtyCompanyInfrastructureWindows(c->index);
    01850           }
    01851         }
    01852
    01853         MakeDriveThroughRoadStop(cur_tile, st->owner, road_owner, tram_owner, st->index, rs_type, rts | cur_rts, DiagDirToAxis(ddir));
    01854         road_stop->MakeDriveThrough();
    01855       } else {
    01856         /* Non-drive-through stop never overbuild and always count as two road bits. */
    01857         Company::Get(st->owner)->infrastructure.road[FIND_FIRST_BIT(rts)] += 2;
    01858         MakeRoadStop(cur_tile, st->owner, st->index, rs_type, rts, ddir);
    01859       }
    01860       Company::Get(st->owner)->infrastructure.station++;
    01861       DirtyCompanyInfrastructureWindows(st->owner);
    01862
    01863       MarkTileDirtyByTile(cur_tile);
    01864     }
    01865   }
    01866
    01867   if (st != NULL) {
    01868     st->UpdateVirtCoord();
    01869     UpdateStationAcceptance(st, false);
    01870     st->RecomputeIndustriesNear();
    01871     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01872     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01873     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ROADVEHS);
    01874   }
    01875   return cost;
    01876 }
    01877
    01878
    01879 static Vehicle *ClearRoadStopStatusEnum(Vehicle *v, void *)
    01880 {
    01881   if (v->type == VEH_ROAD) {
    01882     /* Okay... we are a road vehicle on a drive through road stop.
    01883      * But that road stop has just been removed, so we need to make
    01884      * sure we are in a valid state... however, vehicles can also
    01885      * turn on road stop tiles, so only clear the 'road stop' state
    01886      * bits and only when the state was 'in road stop', otherwise
    01887      * we'll end up clearing the turn around bits. */
    01888     RoadVehicle *rv = RoadVehicle::From(v);
    01889     if (HasBit(rv->state, RVS_IN_DT_ROAD_STOP)) rv->state &= RVSB_ROAD_STOP_TRACKDIR_MASK;
    01890   }
    01891
    01892   return NULL;
    01893 }
    01894
    01895
    01902 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags)
    01903 {
    01904   Station *st = Station::GetByTile(tile);
    01905
    01906   if (_current_company != OWNER_WATER) {
    01907     CommandCost ret = CheckOwnership(st->owner);
    01908     if (ret.Failed()) return ret;
    01909   }
    01910
    01911   bool is_truck = IsTruckStop(tile);
    01912
    01913   RoadStop **primary_stop;
    01914   RoadStop *cur_stop;
    01915   if (is_truck) { // truck stop
    01916     primary_stop = &st->truck_stops;
    01917     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_TRUCK);
    01918   } else {
    01919     primary_stop = &st->bus_stops;
    01920     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_BUS);
    01921   }
    01922
    01923   assert(cur_stop != NULL);
    01924
    01925   /* don't do the check for drive-through road stops when company bankrupts */
    01926   if (IsDriveThroughStopTile(tile) && (flags & DC_BANKRUPT)) {
    01927     /* remove the 'going through road stop' status from all vehicles on that tile */
    01928     if (flags & DC_EXEC) FindVehicleOnPos(tile, NULL, &ClearRoadStopStatusEnum);
    01929   } else {
    01930     CommandCost ret = EnsureNoVehicleOnGround(tile);
    01931     if (ret.Failed()) return ret;
    01932   }
    01933
    01934   if (flags & DC_EXEC) {
    01935     if (*primary_stop == cur_stop) {
    01936       /* removed the first stop in the list */
    01937       *primary_stop = cur_stop->next;
    01938       /* removed the only stop? */
    01939       if (*primary_stop == NULL) {
    01940         st->facilities &= (is_truck ? ~FACIL_TRUCK_STOP : ~FACIL_BUS_STOP);
    01941       }
    01942     } else {
    01943       /* tell the predecessor in the list to skip this stop */
    01944       RoadStop *pred = *primary_stop;
    01945       while (pred->next != cur_stop) pred = pred->next;
    01946       pred->next = cur_stop->next;
    01947     }
    01948
    01949     /* Update company infrastructure counts. */
    01950     RoadType rt;
    01951     FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(tile)) {
    01952       Company *c = Company::GetIfValid(GetRoadOwner(tile, rt));
    01953       if (c != NULL) {
    01954         c->infrastructure.road[rt] -= 2;
    01955         DirtyCompanyInfrastructureWindows(c->index);
    01956       }
    01957     }
    01958     Company::Get(st->owner)->infrastructure.station--;
    01959
    01960     if (IsDriveThroughStopTile(tile)) {
    01961       /* Clears the tile for us */
    01962       cur_stop->ClearDriveThrough();
    01963     } else {
    01964       DoClearSquare(tile);
    01965     }
    01966
    01967     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ROADVEHS);
    01968     delete cur_stop;
    01969
    01970     /* Make sure no vehicle is going to the old roadstop */
    01971     RoadVehicle *v;
    01972     FOR_ALL_ROADVEHICLES(v) {
    01973       if (v->First() == v && v->current_order.IsType(OT_GOTO_STATION) &&
    01974           v->dest_tile == tile) {
    01975         v->dest_tile = v->GetOrderStationLocation(st->index);
    01976       }
    01977     }
    01978
    01979     st->rect.AfterRemoveTile(st, tile);
    01980
    01981     st->UpdateVirtCoord();
    01982     st->RecomputeIndustriesNear();
    01983     DeleteStationIfEmpty(st);
    01984
    01985     /* Update the tile area of the truck/bus stop */
    01986     if (is_truck) {
    01987       st->truck_station.Clear();
    01988       for (const RoadStop *rs = st->truck_stops; rs != NULL; rs = rs->next) st->truck_station.Add(rs->xy);
    01989     } else {
    01990       st->bus_station.Clear();
    01991       for (const RoadStop *rs = st->bus_stops; rs != NULL; rs = rs->next) st->bus_station.Add(rs->xy);
    01992     }
    01993   }
    01994
    01995   return CommandCost(EXPENSES_CONSTRUCTION, _price[is_truck ? PR_CLEAR_STATION_TRUCK : PR_CLEAR_STATION_BUS]);
    01996 }
    01997
    02008 CommandCost CmdRemoveRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02009 {
    02010   uint8 width = (uint8)GB(p1, 0, 8);
    02011   uint8 height = (uint8)GB(p1, 8, 8);
    02012
    02013   /* Check for incorrect width / height. */
    02014   if (width == 0 || height == 0) return CMD_ERROR;
    02015   /* Check if the first tile and the last tile are valid */
    02016   if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, height - 1) == INVALID_TILE) return CMD_ERROR;
    02017
    02018   TileArea roadstop_area(tile, width, height);
    02019
    02020   int quantity = 0;
    02021   CommandCost cost(EXPENSES_CONSTRUCTION);
    02022   TILE_AREA_LOOP(cur_tile, roadstop_area) {
    02023     /* Make sure the specified tile is a road stop of the correct type */
    02024     if (!IsTileType(cur_tile, MP_STATION) || !IsRoadStop(cur_tile) || (uint32)GetRoadStopType(cur_tile) != GB(p2, 0, 1)) continue;
    02025
    02026     /* Save the stop info before it is removed */
    02027     bool is_drive_through = IsDriveThroughStopTile(cur_tile);
    02028     RoadTypes rts = GetRoadTypes(cur_tile);
    02029     RoadBits road_bits = IsDriveThroughStopTile(cur_tile) ?
    02030         ((GetRoadStopDir(cur_tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y) :
    02031         DiagDirToRoadBits(GetRoadStopDir(cur_tile));
    02032
    02033     Owner road_owner = GetRoadOwner(cur_tile, ROADTYPE_ROAD);
    02034     Owner tram_owner = GetRoadOwner(cur_tile, ROADTYPE_TRAM);
    02035     CommandCost ret = RemoveRoadStop(cur_tile, flags);
    02036     if (ret.Failed()) return ret;
    02037     cost.AddCost(ret);
    02038
    02039     quantity++;
    02040     /* If the stop was a drive-through stop replace the road */
    02041     if ((flags & DC_EXEC) && is_drive_through) {
    02042       MakeRoadNormal(cur_tile, road_bits, rts, ClosestTownFromTile(cur_tile, UINT_MAX)->index,
    02043           road_owner, tram_owner);
    02044
    02045       /* Update company infrastructure counts. */
    02046       RoadType rt;
    02047       FOR_EACH_SET_ROADTYPE(rt, rts) {
    02048         Company *c = Company::GetIfValid(GetRoadOwner(cur_tile, rt));
    02049         if (c != NULL) {
    02050           c->infrastructure.road[rt] += CountBits(road_bits);
    02051           DirtyCompanyInfrastructureWindows(c->index);
    02052         }
    02053       }
    02054     }
    02055   }
    02056
    02057   if (quantity == 0) return_cmd_error(STR_ERROR_THERE_IS_NO_STATION);
    02058
    02059   return cost;
    02060 }
    02061
    02068 static uint GetMinimalAirportDistanceToTile(TileIterator &it, TileIndex town_tile)
    02069 {
    02070   uint mindist = UINT_MAX;
    02071
    02072   for (TileIndex cur_tile = it; cur_tile != INVALID_TILE; cur_tile = ++it) {
    02073     mindist = min(mindist, DistanceManhattan(town_tile, cur_tile));
    02074   }
    02075
    02076   return mindist;
    02077 }
    02078
    02088 uint8 GetAirportNoiseLevelForTown(const AirportSpec *as, TileIterator &it, TileIndex town_tile)
    02089 {
    02090   /* 0 cannot be accounted, and 1 is the lowest that can be reduced from town.
    02091    * So no need to go any further*/
    02092   if (as->noise_level < 2) return as->noise_level;
    02093
    02094   uint distance = GetMinimalAirportDistanceToTile(it, town_tile);
    02095
    02096   /* The steps for measuring noise reduction are based on the "magical" (and arbitrary) 8 base distance
    02097    * adding the town_council_tolerance 4 times, as a way to graduate, depending of the tolerance.
    02098    * Basically, it says that the less tolerant a town is, the bigger the distance before
    02099    * an actual decrease can be granted */
    02100   uint8 town_tolerance_distance = 8 + (_settings_game.difficulty.town_council_tolerance * 4);
    02101
    02102   /* now, we want to have the distance segmented using the distance judged bareable by town
    02103    * This will give us the coefficient of reduction the distance provides. */
    02104   uint noise_reduction = distance / town_tolerance_distance;
    02105
    02106   /* If the noise reduction equals the airport noise itself, don't give it for free.
    02107    * Otherwise, simply reduce the airport's level. */
    02108   return noise_reduction >= as->noise_level ? 1 : as->noise_level - noise_reduction;
    02109 }
    02110
    02118 Town *AirportGetNearestTown(const AirportSpec *as, const TileIterator &it)
    02119 {
    02120   Town *t, *nearest = NULL;
    02121   uint add = as->size_x + as->size_y - 2; // GetMinimalAirportDistanceToTile can differ from DistanceManhattan by this much
    02122   uint mindist = UINT_MAX - add; // prevent overflow
    02123   FOR_ALL_TOWNS(t) {
    02124     if (DistanceManhattan(t->xy, it) < mindist + add) { // avoid calling GetMinimalAirportDistanceToTile too often
    02125       TileIterator *copy = it.Clone();
    02126       uint dist = GetMinimalAirportDistanceToTile(*copy, t->xy);
    02127       delete copy;
    02128       if (dist < mindist) {
    02129         nearest = t;
    02130         mindist = dist;
    02131       }
    02132     }
    02133   }
    02134
    02135   return nearest;
    02136 }
    02137
    02138
    02140 void UpdateAirportsNoise()
    02141 {
    02142   Town *t;
    02143   const Station *st;
    02144
    02145   FOR_ALL_TOWNS(t) t->noise_reached = 0;
    02146
    02147   FOR_ALL_STATIONS(st) {
    02148     if (st->airport.tile != INVALID_TILE && st->airport.type != AT_OILRIG) {
    02149       const AirportSpec *as = st->airport.GetSpec();
    02150       AirportTileIterator it(st);
    02151       Town *nearest = AirportGetNearestTown(as, it);
    02152       nearest->noise_reached += GetAirportNoiseLevelForTown(as, it, nearest->xy);
    02153     }
    02154   }
    02155 }
    02156
    02170 CommandCost CmdBuildAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02171 {
    02172   StationID station_to_join = GB(p2, 16, 16);
    02173   bool reuse = (station_to_join != NEW_STATION);
    02174   if (!reuse) station_to_join = INVALID_STATION;
    02175   bool distant_join = (station_to_join != INVALID_STATION);
    02176   byte airport_type = GB(p1, 0, 8);
    02177   byte layout = GB(p1, 8, 8);
    02178
    02179   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    02180
    02181   if (airport_type >= NUM_AIRPORTS) return CMD_ERROR;
    02182
    02183   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
    02184   if (ret.Failed()) return ret;
    02185
    02186   /* Check if a valid, buildable airport was chosen for construction */
    02187   const AirportSpec *as = AirportSpec::Get(airport_type);
    02188   if (!as->IsAvailable() || layout >= as->num_table) return CMD_ERROR;
    02189
    02190   Direction rotation = as->rotation[layout];
    02191   int w = as->size_x;
    02192   int h = as->size_y;
    02193   if (rotation == DIR_E || rotation == DIR_W) Swap(w, h);
    02194   TileArea airport_area = TileArea(tile, w, h);
    02195
    02196   if (w > _settings_game.station.station_spread || h > _settings_game.station.station_spread) {
    02197     return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
    02198   }
    02199
    02200   CommandCost cost = CheckFlatLand(airport_area, flags);
    02201   if (cost.Failed()) return cost;
    02202
    02203   /* The noise level is the noise from the airport and reduce it to account for the distance to the town center. */
    02204   AirportTileTableIterator iter(as->table[layout], tile);
    02205   Town *nearest = AirportGetNearestTown(as, iter);
    02206   uint newnoise_level = GetAirportNoiseLevelForTown(as, iter, nearest->xy);
    02207
    02208   /* Check if local auth would allow a new airport */
    02209   StringID authority_refuse_message = STR_NULL;
    02210   Town *authority_refuse_town = NULL;
    02211
    02212   if (_settings_game.economy.station_noise_level) {
    02213     /* do not allow to build a new airport if this raise the town noise over the maximum allowed by town */
    02214     if ((nearest->noise_reached + newnoise_level) > nearest->MaxTownNoise()) {
    02215       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_NOISE;
    02216       authority_refuse_town = nearest;
    02217     }
    02218   } else {
    02219     Town *t = ClosestTownFromTile(tile, UINT_MAX);
    02220     uint num = 0;
    02221     const Station *st;
    02222     FOR_ALL_STATIONS(st) {
    02223       if (st->town == t && (st->facilities & FACIL_AIRPORT) && st->airport.type != AT_OILRIG) num++;
    02224     }
    02225     if (num >= 2) {
    02226       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_AIRPORT;
    02227       authority_refuse_town = t;
    02228     }
    02229   }
    02230
    02231   if (authority_refuse_message != STR_NULL) {
    02232     SetDParam(0, authority_refuse_town->index);
    02233     return_cmd_error(authority_refuse_message);
    02234   }
    02235
    02236   Station *st = NULL;
    02237   ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 0), airport_area, &st);
    02238   if (ret.Failed()) return ret;
    02239
    02240   /* Distant join */
    02241   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    02242
    02243   ret = BuildStationPart(&st, flags, reuse, airport_area, (GetAirport(airport_type)->flags & AirportFTAClass::AIRPLANES) ? STATIONNAMING_AIRPORT : STATIONNAMING_HELIPORT);
    02244   if (ret.Failed()) return ret;
    02245
    02246   if (st != NULL && st->airport.tile != INVALID_TILE) {
    02247     return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_AIRPORT);
    02248   }
    02249
    02250   for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
    02251     cost.AddCost(_price[PR_BUILD_STATION_AIRPORT]);
    02252   }
    02253
    02254   if (flags & DC_EXEC) {
    02255     /* Always add the noise, so there will be no need to recalculate when option toggles */
    02256     nearest->noise_reached += newnoise_level;
    02257
    02258     st->AddFacility(FACIL_AIRPORT, tile);
    02259     st->airport.type = airport_type;
    02260     st->airport.layout = layout;
    02261     st->airport.flags = 0;
    02262     st->airport.rotation = rotation;
    02263
    02264     st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TRY);
    02265
    02266     for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
    02267       MakeAirport(iter, st->owner, st->index, iter.GetStationGfx(), WATER_CLASS_INVALID);
    02268       SetStationTileRandomBits(iter, GB(Random(), 0, 4));
    02269       st->airport.Add(iter);
    02270
    02271       if (AirportTileSpec::Get(GetTranslatedAirportTileID(iter.GetStationGfx()))->animation.status != ANIM_STATUS_NO_ANIMATION) AddAnimatedTile(iter);
    02272     }
    02273
    02274     /* Only call the animation trigger after all tiles have been built */
    02275     for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
    02276       AirportTileAnimationTrigger(st, iter, AAT_BUILT);
    02277     }
    02278
    02279     UpdateAirplanesOnNewStation(st);
    02280
    02281     Company::Get(st->owner)->infrastructure.airport++;
    02282     DirtyCompanyInfrastructureWindows(st->owner);
    02283
    02284     st->UpdateVirtCoord();
    02285     UpdateStationAcceptance(st, false);
    02286     st->RecomputeIndustriesNear();
    02287     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02288     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02289     InvalidateWindowData(WC_STATION_VIEW, st->index, -1);
    02290
    02291     if (_settings_game.economy.station_noise_level) {
    02292       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02293     }
    02294   }
    02295
    02296   return cost;
    02297 }
    02298
    02305 static CommandCost RemoveAirport(TileIndex tile, DoCommandFlag flags)
    02306 {
    02307   Station *st = Station::GetByTile(tile);
    02308
    02309   if (_current_company != OWNER_WATER) {
    02310     CommandCost ret = CheckOwnership(st->owner);
    02311     if (ret.Failed()) return ret;
    02312   }
    02313
    02314   tile = st->airport.tile;
    02315
    02316   CommandCost cost(EXPENSES_CONSTRUCTION);
    02317
    02318   const Aircraft *a;
    02319   FOR_ALL_AIRCRAFT(a) {
    02320     if (!a->IsNormalAircraft()) continue;
    02321     if (a->targetairport == st->index && a->state != FLYING) return CMD_ERROR;
    02322   }
    02323
    02324   if (flags & DC_EXEC) {
    02325     const AirportSpec *as = st->airport.GetSpec();
    02326     /* The noise level is the noise from the airport and reduce it to account for the distance to the town center.
    02327      * And as for construction, always remove it, even if the setting is not set, in order to avoid the
    02328      * need of recalculation */
    02329     AirportTileIterator it(st);
    02330     Town *nearest = AirportGetNearestTown(as, it);
    02331     nearest->noise_reached -= GetAirportNoiseLevelForTown(as, it, nearest->xy);
    02332   }
    02333
    02334   TILE_AREA_LOOP(tile_cur, st->airport) {
    02335     if (!st->TileBelongsToAirport(tile_cur)) continue;
    02336
    02337     CommandCost ret = EnsureNoVehicleOnGround(tile_cur);
    02338     if (ret.Failed()) return ret;
    02339
    02340     cost.AddCost(_price[PR_CLEAR_STATION_AIRPORT]);
    02341
    02342     if (flags & DC_EXEC) {
    02343       if (IsHangarTile(tile_cur)) OrderBackup::Reset(tile_cur, false);
    02344       DeleteAnimatedTile(tile_cur);
    02345       DoClearSquare(tile_cur);
    02346       DeleteNewGRFInspectWindow(GSF_AIRPORTTILES, tile_cur);
    02347     }
    02348   }
    02349
    02350   if (flags & DC_EXEC) {
    02351     /* Clear the persistent storage. */
    02352     delete st->airport.psa;
    02353
    02354     for (uint i = 0; i < st->airport.GetNumHangars(); ++i) {
    02355       DeleteWindowById(
    02356         WC_VEHICLE_DEPOT, st->airport.GetHangarTile(i)
    02357       );
    02358     }
    02359
    02360     st->rect.AfterRemoveRect(st, st->airport);
    02361
    02362     st->airport.Clear();
    02363     st->facilities &= ~FACIL_AIRPORT;
    02364
    02365     InvalidateWindowData(WC_STATION_VIEW, st->index, -1);
    02366
    02367     if (_settings_game.economy.station_noise_level) {
    02368       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02369     }
    02370
    02371     Company::Get(st->owner)->infrastructure.airport--;
    02372     DirtyCompanyInfrastructureWindows(st->owner);
    02373
    02374     st->UpdateVirtCoord();
    02375     st->RecomputeIndustriesNear();
    02376     DeleteStationIfEmpty(st);
    02377     DeleteNewGRFInspectWindow(GSF_AIRPORTS, st->index);
    02378   }
    02379
    02380   return cost;
    02381 }
    02382
    02392 CommandCost CmdOpenCloseAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02393 {
    02394   if (!Station::IsValidID(p1)) return CMD_ERROR;
    02395   Station *st = Station::Get(p1);
    02396
    02397   if (!(st->facilities & FACIL_AIRPORT) || st->owner == OWNER_NONE) return CMD_ERROR;
    02398
    02399   CommandCost ret = CheckOwnership(st->owner);
    02400   if (ret.Failed()) return ret;
    02401
    02402   if (flags & DC_EXEC) {
    02403     st->airport.flags ^= AIRPORT_CLOSED_block;
    02404     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_CLOSE_AIRPORT);
    02405   }
    02406   return CommandCost();
    02407 }
    02408
    02415 bool HasStationInUse(StationID station, bool include_company, CompanyID company)
    02416 {
    02417   const Vehicle *v;
    02418   FOR_ALL_VEHICLES(v) {
    02419     if ((v->owner == company) == include_company) {
    02420       const Order *order;
    02421       FOR_VEHICLE_ORDERS(v, order) {
    02422         if ((order->IsType(OT_GOTO_STATION) || order->IsType(OT_GOTO_WAYPOINT)) && order->GetDestination() == station) {
    02423           return true;
    02424         }
    02425       }
    02426     }
    02427   }
    02428   return false;
    02429 }
    02430
    02431 static const TileIndexDiffC _dock_tileoffs_chkaround[] = {
    02432   {-1,  0},
    02433   { 0,  0},
    02434   { 0,  0},
    02435   { 0, -1}
    02436 };
    02437 static const byte _dock_w_chk[4] = { 2, 1, 2, 1 };
    02438 static const byte _dock_h_chk[4] = { 1, 2, 1, 2 };
    02439
    02449 CommandCost CmdBuildDock(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02450 {
    02451   StationID station_to_join = GB(p2, 16, 16);
    02452   bool reuse = (station_to_join != NEW_STATION);
    02453   if (!reuse) station_to_join = INVALID_STATION;
    02454   bool distant_join = (station_to_join != INVALID_STATION);
    02455
    02456   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    02457
    02458   DiagDirection direction = GetInclinedSlopeDirection(GetTileSlope(tile));
    02459   if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02460   direction = ReverseDiagDir(direction);
    02461
    02462   /* Docks cannot be placed on rapids */
    02463   if (HasTileWaterGround(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02464
    02465   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
    02466   if (ret.Failed()) return ret;
    02467
    02468   if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02469
    02470   ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    02471   if (ret.Failed()) return ret;
    02472
    02473   TileIndex tile_cur = tile + TileOffsByDiagDir(direction);
    02474
    02475   if (!IsTileType(tile_cur, MP_WATER) || !IsTileFlat(tile_cur)) {
    02476     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02477   }
    02478
    02479   if (MayHaveBridgeAbove(tile_cur) && IsBridgeAbove(tile_cur)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02480
    02481   /* Get the water class of the water tile before it is cleared.*/
    02482   WaterClass wc = GetWaterClass(tile_cur);
    02483
    02484   ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    02485   if (ret.Failed()) return ret;
    02486
    02487   tile_cur += TileOffsByDiagDir(direction);
    02488   if (!IsTileType(tile_cur, MP_WATER) || !IsTileFlat(tile_cur)) {
    02489     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02490   }
    02491
    02492   TileArea dock_area = TileArea(tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02493       _dock_w_chk[direction], _dock_h_chk[direction]);
    02494
    02495   /* middle */
    02496   Station *st = NULL;
    02497   ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p1, 0), dock_area, &st);
    02498   if (ret.Failed()) return ret;
    02499
    02500   /* Distant join */
    02501   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    02502
    02503   ret = BuildStationPart(&st, flags, reuse, dock_area, STATIONNAMING_DOCK);
    02504   if (ret.Failed()) return ret;
    02505
    02506   if (st != NULL && st->dock_tile != INVALID_TILE) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_DOCK);
    02507
    02508   if (flags & DC_EXEC) {
    02509     st->dock_tile = tile;
    02510     st->AddFacility(FACIL_DOCK, tile);
    02511
    02512     st->rect.BeforeAddRect(dock_area.tile, dock_area.w, dock_area.h, StationRect::ADD_TRY);
    02513
    02514     /* If the water part of the dock is on a canal, update infrastructure counts.
    02515      * This is needed as we've unconditionally cleared that tile before. */
    02516     if (wc == WATER_CLASS_CANAL) {
    02517       Company::Get(st->owner)->infrastructure.water++;
    02518     }
    02519     Company::Get(st->owner)->infrastructure.station += 2;
    02520     DirtyCompanyInfrastructureWindows(st->owner);
    02521
    02522     MakeDock(tile, st->owner, st->index, direction, wc);
    02523
    02524     st->UpdateVirtCoord();
    02525     UpdateStationAcceptance(st, false);
    02526     st->RecomputeIndustriesNear();
    02527     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02528     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02529     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_SHIPS);
    02530   }
    02531
    02532   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_STATION_DOCK]);
    02533 }
    02534
    02541 static CommandCost RemoveDock(TileIndex tile, DoCommandFlag flags)
    02542 {
    02543   Station *st = Station::GetByTile(tile);
    02544   CommandCost ret = CheckOwnership(st->owner);
    02545   if (ret.Failed()) return ret;
    02546
    02547   TileIndex docking_location = TILE_ADD(st->dock_tile, ToTileIndexDiff(GetDockOffset(st->dock_tile)));
    02548
    02549   TileIndex tile1 = st->dock_tile;
    02550   TileIndex tile2 = tile1 + TileOffsByDiagDir(GetDockDirection(tile1));
    02551
    02552   ret = EnsureNoVehicleOnGround(tile1);
    02553   if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile2);
    02554   if (ret.Failed()) return ret;
    02555
    02556   if (flags & DC_EXEC) {
    02557     DoClearSquare(tile1);
    02558     MarkTileDirtyByTile(tile1);
    02559     MakeWaterKeepingClass(tile2, st->owner);
    02560
    02561     st->rect.AfterRemoveTile(st, tile1);
    02562     st->rect.AfterRemoveTile(st, tile2);
    02563
    02564     st->dock_tile = INVALID_TILE;
    02565     st->facilities &= ~FACIL_DOCK;
    02566
    02567     Company::Get(st->owner)->infrastructure.station -= 2;
    02568     DirtyCompanyInfrastructureWindows(st->owner);
    02569
    02570     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_SHIPS);
    02571     st->UpdateVirtCoord();
    02572     st->RecomputeIndustriesNear();
    02573     DeleteStationIfEmpty(st);
    02574
    02575     /* All ships that were going to our station, can't go to it anymore.
    02576      * Just clear the order, then automatically the next appropriate order
    02577      * will be selected and in case of no appropriate order it will just
    02578      * wander around the world. */
    02579     Ship *s;
    02580     FOR_ALL_SHIPS(s) {
    02581       if (s->current_order.IsType(OT_LOADING) && s->tile == docking_location) {
    02582         s->LeaveStation();
    02583       }
    02584
    02585       if (s->dest_tile == docking_location) {
    02586         s->dest_tile = 0;
    02587         s->current_order.Free();
    02588       }
    02589     }
    02590   }
    02591
    02592   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_STATION_DOCK]);
    02593 }
    02594
    02595 #include "table/station_land.h"
    02596
    02597 const DrawTileSprites *GetStationTileLayout(StationType st, byte gfx)
    02598 {
    02599   return &_station_display_datas[st][gfx];
    02600 }
    02601
    02611 bool SplitGroundSpriteForOverlay(const TileInfo *ti, SpriteID *ground, RailTrackOffset *overlay_offset)
    02612 {
    02613   bool snow_desert;
    02614   switch (*ground) {
    02615     case SPR_RAIL_TRACK_X:
    02616       snow_desert = false;
    02617       *overlay_offset = RTO_X;
    02618       break;
    02619
    02620     case SPR_RAIL_TRACK_Y:
    02621       snow_desert = false;
    02622       *overlay_offset = RTO_Y;
    02623       break;
    02624
    02625     case SPR_RAIL_TRACK_X_SNOW:
    02626       snow_desert = true;
    02627       *overlay_offset = RTO_X;
    02628       break;
    02629
    02630     case SPR_RAIL_TRACK_Y_SNOW:
    02631       snow_desert = true;
    02632       *overlay_offset = RTO_Y;
    02633       break;
    02634
    02635     default:
    02636       return false;
    02637   }
    02638
    02639   if (ti != NULL) {
    02640     /* Decide snow/desert from tile */
    02641     switch (_settings_game.game_creation.landscape) {
    02642       case LT_ARCTIC:
    02643         snow_desert = (uint)ti->z > GetSnowLine() * TILE_HEIGHT;
    02644         break;
    02645
    02646       case LT_TROPIC:
    02647         snow_desert = GetTropicZone(ti->tile) == TROPICZONE_DESERT;
    02648         break;
    02649
    02650       default:
    02651         break;
    02652     }
    02653   }
    02654
    02655   *ground = snow_desert ? SPR_FLAT_SNOW_DESERT_TILE : SPR_FLAT_GRASS_TILE;
    02656   return true;
    02657 }
    02658
    02659 static void DrawTile_Station(TileInfo *ti)
    02660 {
    02661   const NewGRFSpriteLayout *layout = NULL;
    02662   DrawTileSprites tmp_rail_layout;
    02663   const DrawTileSprites *t = NULL;
    02664   RoadTypes roadtypes;
    02665   int32 total_offset;
    02666   const RailtypeInfo *rti = NULL;
    02667   uint32 relocation = 0;
    02668   uint32 ground_relocation = 0;
    02669   BaseStation *st = NULL;
    02670   const StationSpec *statspec = NULL;
    02671   uint tile_layout = 0;
    02672
    02673   if (HasStationRail(ti->tile)) {
    02674     rti = GetRailTypeInfo(GetRailType(ti->tile));
    02675     roadtypes = ROADTYPES_NONE;
    02676     total_offset = rti->GetRailtypeSpriteOffset();
    02677
    02678     if (IsCustomStationSpecIndex(ti->tile)) {
    02679       /* look for customization */
    02680       st = BaseStation::GetByTile(ti->tile);
    02681       statspec = st->speclist[GetCustomStationSpecIndex(ti->tile)].spec;
    02682
    02683       if (statspec != NULL) {
    02684         tile_layout = GetStationGfx(ti->tile);
    02685
    02686         if (HasBit(statspec->callback_mask, CBM_STATION_SPRITE_LAYOUT)) {
    02687           uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0, 0, statspec, st, ti->tile);
    02688           if (callback != CALLBACK_FAILED) tile_layout = (callback & ~1) + GetRailStationAxis(ti->tile);
    02689         }
    02690
    02691         /* Ensure the chosen tile layout is valid for this custom station */
    02692         if (statspec->renderdata != NULL) {
    02693           layout = &statspec->renderdata[tile_layout < statspec->tiles ? tile_layout : (uint)GetRailStationAxis(ti->tile)];
    02694           if (!layout->NeedsPreprocessing()) {
    02695             t = layout;
    02696             layout = NULL;
    02697           }
    02698         }
    02699       }
    02700     }
    02701   } else {
    02702     roadtypes = IsRoadStop(ti->tile) ? GetRoadTypes(ti->tile) : ROADTYPES_NONE;
    02703     total_offset = 0;
    02704   }
    02705
    02706   StationGfx gfx = GetStationGfx(ti->tile);
    02707   if (IsAirport(ti->tile)) {
    02708     gfx = GetAirportGfx(ti->tile);
    02709     if (gfx >= NEW_AIRPORTTILE_OFFSET) {
    02710       const AirportTileSpec *ats = AirportTileSpec::Get(gfx);
    02711       if (ats->grf_prop.spritegroup[0] != NULL && DrawNewAirportTile(ti, Station::GetByTile(ti->tile), gfx, ats)) {
    02712         return;
    02713       }
    02714       /* No sprite group (or no valid one) found, meaning no graphics associated.
    02715        * Use the substitute one instead */
    02716       assert(ats->grf_prop.subst_id != INVALID_AIRPORTTILE);
    02717       gfx = ats->grf_prop.subst_id;
    02718     }
    02719     switch (gfx) {
    02720       case APT_RADAR_GRASS_FENCE_SW:
    02721         t = &_station_display_datas_airport_radar_grass_fence_sw[GetAnimationFrame(ti->tile)];
    02722         break;
    02723       case APT_GRASS_FENCE_NE_FLAG:
    02724         t = &_station_display_datas_airport_flag_grass_fence_ne[GetAnimationFrame(ti->tile)];
    02725         break;
    02726       case APT_RADAR_FENCE_SW:
    02727         t = &_station_display_datas_airport_radar_fence_sw[GetAnimationFrame(ti->tile)];
    02728         break;
    02729       case APT_RADAR_FENCE_NE:
    02730         t = &_station_display_datas_airport_radar_fence_ne[GetAnimationFrame(ti->tile)];
    02731         break;
    02732       case APT_GRASS_FENCE_NE_FLAG_2:
    02733         t = &_station_display_datas_airport_flag_grass_fence_ne_2[GetAnimationFrame(ti->tile)];
    02734         break;
    02735     }
    02736   }
    02737
    02738   Owner owner = GetTileOwner(ti->tile);
    02739
    02740   PaletteID palette;
    02741   if (Company::IsValidID(owner)) {
    02742     palette = COMPANY_SPRITE_COLOUR(owner);
    02743   } else {
    02744     /* Some stations are not owner by a company, namely oil rigs */
    02745     palette = PALETTE_TO_GREY;
    02746   }
    02747
    02748   if (layout == NULL && (t == NULL || t->seq == NULL)) t = GetStationTileLayout(GetStationType(ti->tile), gfx);
    02749
    02750   /* don't show foundation for docks */
    02751   if (ti->tileh != SLOPE_FLAT && !IsDock(ti->tile)) {
    02752     if (statspec != NULL && HasBit(statspec->flags, SSF_CUSTOM_FOUNDATIONS)) {
    02753       /* Station has custom foundations.
    02754        * Check whether the foundation continues beyond the tile's upper sides. */
    02755       uint edge_info = 0;
    02756       int z;
    02757       Slope slope = GetFoundationPixelSlope(ti->tile, &z);
    02758       if (!HasFoundationNW(ti->tile, slope, z)) SetBit(edge_info, 0);
    02759       if (!HasFoundationNE(ti->tile, slope, z)) SetBit(edge_info, 1);
    02760       SpriteID image = GetCustomStationFoundationRelocation(statspec, st, ti->tile, tile_layout, edge_info);
    02761       if (image == 0) goto draw_default_foundation;
    02762
    02763       if (HasBit(statspec->flags, SSF_EXTENDED_FOUNDATIONS)) {
    02764         /* Station provides extended foundations. */
    02765
    02766         static const uint8 foundation_parts[] = {
    02767           0, 0, 0, 0, // Invalid,  Invalid,   Invalid,   SLOPE_SW
    02768           0, 1, 2, 3, // Invalid,  SLOPE_EW,  SLOPE_SE,  SLOPE_WSE
    02769           0, 4, 5, 6, // Invalid,  SLOPE_NW,  SLOPE_NS,  SLOPE_NWS
    02770           7, 8, 9     // SLOPE_NE, SLOPE_ENW, SLOPE_SEN
    02771         };
    02772
    02773         AddSortableSpriteToDraw(image + foundation_parts[ti->tileh], PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02774       } else {
    02775         /* Draw simple foundations, built up from 8 possible foundation sprites. */
    02776
    02777         /* Each set bit represents one of the eight composite sprites to be drawn.
    02778          * 'Invalid' entries will not drawn but are included for completeness. */
    02779         static const uint8 composite_foundation_parts[] = {
    02780           /* Invalid  (00000000), Invalid   (11010001), Invalid   (11100100), SLOPE_SW  (11100000) */
    02781              0x00,                0xD1,                 0xE4,                 0xE0,
    02782           /* Invalid  (11001010), SLOPE_EW  (11001001), SLOPE_SE  (11000100), SLOPE_WSE (11000000) */
    02783              0xCA,                0xC9,                 0xC4,                 0xC0,
    02784           /* Invalid  (11010010), SLOPE_NW  (10010001), SLOPE_NS  (11100100), SLOPE_NWS (10100000) */
    02785              0xD2,                0x91,                 0xE4,                 0xA0,
    02786           /* SLOPE_NE (01001010), SLOPE_ENW (00001001), SLOPE_SEN (01000100) */
    02787              0x4A,                0x09,                 0x44
    02788         };
    02789
    02790         uint8 parts = composite_foundation_parts[ti->tileh];
    02791
    02792         /* If foundations continue beyond the tile's upper sides then
    02793          * mask out the last two pieces. */
    02794         if (HasBit(edge_info, 0)) ClrBit(parts, 6);
    02795         if (HasBit(edge_info, 1)) ClrBit(parts, 7);
    02796
    02797         if (parts == 0) {
    02798           /* We always have to draw at least one sprite to make sure there is a boundingbox and a sprite with the
    02799            * correct offset for the childsprites.
    02800            * So, draw the (completely empty) sprite of the default foundations. */
    02801           goto draw_default_foundation;
    02802         }
    02803
    02804         StartSpriteCombine();
    02805         for (int i = 0; i < 8; i++) {
    02806           if (HasBit(parts, i)) {
    02807             AddSortableSpriteToDraw(image + i, PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02808           }
    02809         }
    02810         EndSpriteCombine();
    02811       }
    02812
    02813       OffsetGroundSprite(31, 1);
    02814       ti->z += ApplyPixelFoundationToSlope(FOUNDATION_LEVELED, &ti->tileh);
    02815     } else {
    02816 draw_default_foundation:
    02817       DrawFoundation(ti, FOUNDATION_LEVELED);
    02818     }
    02819   }
    02820
    02821   if (IsBuoy(ti->tile)) {
    02822     DrawWaterClassGround(ti);
    02823     SpriteID sprite = GetCanalSprite(CF_BUOY, ti->tile);
    02824     if (sprite != 0) total_offset = sprite - SPR_IMG_BUOY;
    02825   } else if (IsDock(ti->tile) || (IsOilRig(ti->tile) && IsTileOnWater(ti->tile))) {
    02826     if (ti->tileh == SLOPE_FLAT) {
    02827       DrawWaterClassGround(ti);
    02828     } else {
    02829       assert(IsDock(ti->tile));
    02830       TileIndex water_tile = ti->tile + TileOffsByDiagDir(GetDockDirection(ti->tile));
    02831       WaterClass wc = GetWaterClass(water_tile);
    02832       if (wc == WATER_CLASS_SEA) {
    02833         DrawShoreTile(ti->tileh);
    02834       } else {
    02835         DrawClearLandTile(ti, 3);
    02836       }
    02837     }
    02838   } else {
    02839     if (layout != NULL) {
    02840       /* Sprite layout which needs preprocessing */
    02841       bool separate_ground = HasBit(statspec->flags, SSF_SEPARATE_GROUND);
    02842       uint32 var10_values = layout->PrepareLayout(total_offset, rti->fallback_railtype, 0, 0, separate_ground);
    02843       uint8 var10;
    02844       FOR_EACH_SET_BIT(var10, var10_values) {
    02845         uint32 var10_relocation = GetCustomStationRelocation(statspec, st, ti->tile, var10);
    02846         layout->ProcessRegisters(var10, var10_relocation, separate_ground);
    02847       }
    02848       tmp_rail_layout.seq = layout->GetLayout(&tmp_rail_layout.ground);
    02849       t = &tmp_rail_layout;
    02850       total_offset = 0;
    02851     } else if (statspec != NULL) {
    02852       /* Simple sprite layout */
    02853       ground_relocation = relocation = GetCustomStationRelocation(statspec, st, ti->tile, 0);
    02854       if (HasBit(statspec->flags, SSF_SEPARATE_GROUND)) {
    02855         ground_relocation = GetCustomStationRelocation(statspec, st, ti->tile, 1);
    02856       }
    02857       ground_relocation += rti->fallback_railtype;
    02858     }
    02859
    02860     SpriteID image = t->ground.sprite;
    02861     PaletteID pal  = t->ground.pal;
    02862     RailTrackOffset overlay_offset;
    02863     if (rti != NULL && rti->UsesOverlay() && SplitGroundSpriteForOverlay(ti, &image, &overlay_offset)) {
    02864       SpriteID ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND);
    02865       DrawGroundSprite(image, PAL_NONE);
    02866       DrawGroundSprite(ground + overlay_offset, PAL_NONE);
    02867
    02868       if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationReservation(ti->tile)) {
    02869         SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
    02870         DrawGroundSprite(overlay + overlay_offset, PALETTE_CRASH);
    02871       }
    02872     } else {
    02873       image += HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? ground_relocation : total_offset;
    02874       if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += ground_relocation;
    02875       DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, palette));
    02876
    02877       /* PBS debugging, draw reserved tracks darker */
    02878       if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationRail(ti->tile) && HasStationReservation(ti->tile)) {
    02879         const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
    02880         DrawGroundSprite(GetRailStationAxis(ti->tile) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
    02881       }
    02882     }
    02883   }
    02884
    02885   if (HasStationRail(ti->tile) && HasCatenaryDrawn(GetRailType(ti->tile))) DrawCatenary(ti);
    02886
    02887   if (HasBit(roadtypes, ROADTYPE_TRAM)) {
    02888     Axis axis = GetRoadStopDir(ti->tile) == DIAGDIR_NE ? AXIS_X : AXIS_Y;
    02889     DrawGroundSprite((HasBit(roadtypes, ROADTYPE_ROAD) ? SPR_TRAMWAY_OVERLAY : SPR_TRAMWAY_TRAM) + (axis ^ 1), PAL_NONE);
    02890     DrawTramCatenary(ti, axis == AXIS_X ? ROAD_X : ROAD_Y);
    02891   }
    02892
    02893   if (IsRailWaypoint(ti->tile)) {
    02894     /* Don't offset the waypoint graphics; they're always the same. */
    02895     total_offset = 0;
    02896   }
    02897
    02898   DrawRailTileSeq(ti, t, TO_BUILDINGS, total_offset, relocation, palette);
    02899 }
    02900
    02901 void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, RoadType roadtype, int image)
    02902 {
    02903   int32 total_offset = 0;
    02904   PaletteID pal = COMPANY_SPRITE_COLOUR(_local_company);
    02905   const DrawTileSprites *t = GetStationTileLayout(st, image);
    02906   const RailtypeInfo *rti = NULL;
    02907
    02908   if (railtype != INVALID_RAILTYPE) {
    02909     rti = GetRailTypeInfo(railtype);
    02910     total_offset = rti->GetRailtypeSpriteOffset();
    02911   }
    02912
    02913   SpriteID img = t->ground.sprite;
    02914   RailTrackOffset overlay_offset;
    02915   if (rti != NULL && rti->UsesOverlay() && SplitGroundSpriteForOverlay(NULL, &img, &overlay_offset)) {
    02916     SpriteID ground = GetCustomRailSprite(rti, INVALID_TILE, RTSG_GROUND);
    02917     DrawSprite(img, PAL_NONE, x, y);
    02918     DrawSprite(ground + overlay_offset, PAL_NONE, x, y);
    02919   } else {
    02920     DrawSprite(img + total_offset, HasBit(img, PALETTE_MODIFIER_COLOUR) ? pal : PAL_NONE, x, y);
    02921   }
    02922
    02923   if (roadtype == ROADTYPE_TRAM) {
    02924     DrawSprite(SPR_TRAMWAY_TRAM + (t->ground.sprite == SPR_ROAD_PAVED_STRAIGHT_X ? 1 : 0), PAL_NONE, x, y);
    02925   }
    02926
    02927   /* Default waypoint has no railtype specific sprites */
    02928   DrawRailTileSeqInGUI(x, y, t, st == STATION_WAYPOINT ? 0 : total_offset, 0, pal);
    02929 }
    02930
    02931 static int GetSlopePixelZ_Station(TileIndex tile, uint x, uint y)
    02932 {
    02933   return GetTileMaxPixelZ(tile);
    02934 }
    02935
    02936 static Foundation GetFoundation_Station(TileIndex tile, Slope tileh)
    02937 {
    02938   return FlatteningFoundation(tileh);
    02939 }
    02940
    02941 static void GetTileDesc_Station(TileIndex tile, TileDesc *td)
    02942 {
    02943   td->owner[0] = GetTileOwner(tile);
    02944   if (IsDriveThroughStopTile(tile)) {
    02945     Owner road_owner = INVALID_OWNER;
    02946     Owner tram_owner = INVALID_OWNER;
    02947     RoadTypes rts = GetRoadTypes(tile);
    02948     if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    02949     if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    02950
    02951     /* Is there a mix of owners? */
    02952     if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
    02953         (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
    02954       uint i = 1;
    02955       if (road_owner != INVALID_OWNER) {
    02956         td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
    02957         td->owner[i] = road_owner;
    02958         i++;
    02959       }
    02960       if (tram_owner != INVALID_OWNER) {
    02961         td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
    02962         td->owner[i] = tram_owner;
    02963       }
    02964     }
    02965   }
    02966   td->build_date = BaseStation::GetByTile(tile)->build_date;
    02967
    02968   if (HasStationTileRail(tile)) {
    02969     const StationSpec *spec = GetStationSpec(tile);
    02970
    02971     if (spec != NULL) {
    02972       td->station_class = StationClass::Get(spec->cls_id)->name;
    02973       td->station_name  = spec->name;
    02974
    02975       if (spec->grf_prop.grffile != NULL) {
    02976         const GRFConfig *gc = GetGRFConfig(spec->grf_prop.grffile->grfid);
    02977         td->grf = gc->GetName();
    02978       }
    02979     }
    02980
    02981     const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
    02982     td->rail_speed = rti->max_speed;
    02983   }
    02984
    02985   if (IsAirport(tile)) {
    02986     const AirportSpec *as = Station::GetByTile(tile)->airport.GetSpec();
    02987     td->airport_class = AirportClass::Get(as->cls_id)->name;
    02988     td->airport_name = as->name;
    02989
    02990     const AirportTileSpec *ats = AirportTileSpec::GetByTile(tile);
    02991     td->airport_tile_name = ats->name;
    02992
    02993     if (as->grf_prop.grffile != NULL) {
    02994       const GRFConfig *gc = GetGRFConfig(as->grf_prop.grffile->grfid);
    02995       td->grf = gc->GetName();
    02996     } else if (ats->grf_prop.grffile != NULL) {
    02997       const GRFConfig *gc = GetGRFConfig(ats->grf_prop.grffile->grfid);
    02998       td->grf = gc->GetName();
    02999     }
    03000   }
    03001
    03002   StringID str;
    03003   switch (GetStationType(tile)) {
    03004     default: NOT_REACHED();
    03005     case STATION_RAIL:     str = STR_LAI_STATION_DESCRIPTION_RAILROAD_STATION; break;
    03006     case STATION_AIRPORT:
    03007       str = (IsHangar(tile) ? STR_LAI_STATION_DESCRIPTION_AIRCRAFT_HANGAR : STR_LAI_STATION_DESCRIPTION_AIRPORT);
    03008       break;
    03009     case STATION_TRUCK:    str = STR_LAI_STATION_DESCRIPTION_TRUCK_LOADING_AREA; break;
    03010     case STATION_BUS:      str = STR_LAI_STATION_DESCRIPTION_BUS_STATION; break;
    03011     case STATION_OILRIG:   str = STR_INDUSTRY_NAME_OIL_RIG; break;
    03012     case STATION_DOCK:     str = STR_LAI_STATION_DESCRIPTION_SHIP_DOCK; break;
    03013     case STATION_BUOY:     str = STR_LAI_STATION_DESCRIPTION_BUOY; break;
    03014     case STATION_WAYPOINT: str = STR_LAI_STATION_DESCRIPTION_WAYPOINT; break;
    03015   }
    03016   td->str = str;
    03017 }
    03018
    03019
    03020 static TrackStatus GetTileTrackStatus_Station(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
    03021 {
    03022   TrackBits trackbits = TRACK_BIT_NONE;
    03023
    03024   switch (mode) {
    03025     case TRANSPORT_RAIL:
    03026       if (HasStationRail(tile) && !IsStationTileBlocked(tile)) {
    03027         trackbits = TrackToTrackBits(GetRailStationTrack(tile));
    03028       }
    03029       break;
    03030
    03031     case TRANSPORT_WATER:
    03032       /* buoy is coded as a station, it is always on open water */
    03033       if (IsBuoy(tile)) {
    03034         trackbits = TRACK_BIT_ALL;
    03035         /* remove tracks that connect NE map edge */
    03036         if (TileX(tile) == 0) trackbits &= ~(TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_RIGHT);
    03037         /* remove tracks that connect NW map edge */
    03038         if (TileY(tile) == 0) trackbits &= ~(TRACK_BIT_Y | TRACK_BIT_LEFT | TRACK_BIT_UPPER);
    03039       }
    03040       break;
    03041
    03042     case TRANSPORT_ROAD:
    03043       if ((GetRoadTypes(tile) & sub_mode) != 0 && IsRoadStop(tile)) {
    03044         DiagDirection dir = GetRoadStopDir(tile);
    03045         Axis axis = DiagDirToAxis(dir);
    03046
    03047         if (side != INVALID_DIAGDIR) {
    03048           if (axis != DiagDirToAxis(side) || (IsStandardRoadStopTile(tile) && dir != side)) break;
    03049         }
    03050
    03051         trackbits = AxisToTrackBits(axis);
    03052       }
    03053       break;
    03054
    03055     default:
    03056       break;
    03057   }
    03058
    03059   return CombineTrackStatus(TrackBitsToTrackdirBits(trackbits), TRACKDIR_BIT_NONE);
    03060 }
    03061
    03062
    03063 static void TileLoop_Station(TileIndex tile)
    03064 {
    03065   /* FIXME -- GetTileTrackStatus_Station -> animated stationtiles
    03066    * hardcoded.....not good */
    03067   switch (GetStationType(tile)) {
    03068     case STATION_AIRPORT:
    03069       AirportTileAnimationTrigger(Station::GetByTile(tile), tile, AAT_TILELOOP);
    03070       break;
    03071
    03072     case STATION_DOCK:
    03073       if (!IsTileFlat(tile)) break; // only handle water part
    03074       /* FALL THROUGH */
    03075     case STATION_OILRIG: //(station part)
    03076     case STATION_BUOY:
    03077       TileLoop_Water(tile);
    03078       break;
    03079
    03080     default: break;
    03081   }
    03082 }
    03083
    03084
    03085 static void AnimateTile_Station(TileIndex tile)
    03086 {
    03087   if (HasStationRail(tile)) {
    03088     AnimateStationTile(tile);
    03089     return;
    03090   }
    03091
    03092   if (IsAirport(tile)) {
    03093     AnimateAirportTile(tile);
    03094   }
    03095 }
    03096
    03097
    03098 static bool ClickTile_Station(TileIndex tile)
    03099 {
    03100   const BaseStation *bst = BaseStation::GetByTile(tile);
    03101
    03102   if (bst->facilities & FACIL_WAYPOINT) {
    03103     ShowWaypointWindow(Waypoint::From(bst));
    03104   } else if (IsHangar(tile)) {
    03105     const Station *st = Station::From(bst);
    03106     ShowDepotWindow(st->airport.GetHangarTile(st->airport.GetHangarNum(tile)), VEH_AIRCRAFT);
    03107   } else {
    03108     ShowStationViewWindow(bst->index);
    03109   }
    03110   return true;
    03111 }
    03112
    03113 static VehicleEnterTileStatus VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
    03114 {
    03115   if (v->type == VEH_TRAIN) {
    03116     StationID station_id = GetStationIndex(tile);
    03117     if (!v->current_order.ShouldStopAtStation(v, station_id)) return VETSB_CONTINUE;
    03118     if (!IsRailStation(tile) || !v->IsFrontEngine()) return VETSB_CONTINUE;
    03119
    03120     int station_ahead;
    03121     int station_length;
    03122     int stop = GetTrainStopLocation(station_id, tile, Train::From(v), &station_ahead, &station_length);
    03123
    03124     /* Stop whenever that amount of station ahead + the distance from the
    03125      * begin of the platform to the stop location is longer than the length
    03126      * of the platform. Station ahead 'includes' the current tile where the
    03127      * vehicle is on, so we need to subtract that. */
    03128     if (stop + station_ahead - (int)TILE_SIZE >= station_length) return VETSB_CONTINUE;
    03129
    03130     DiagDirection dir = DirToDiagDir(v->direction);
    03131
    03132     x &= 0xF;
    03133     y &= 0xF;
    03134
    03135     if (DiagDirToAxis(dir) != AXIS_X) Swap(x, y);
    03136     if (y == TILE_SIZE / 2) {
    03137       if (dir != DIAGDIR_SE && dir != DIAGDIR_SW) x = TILE_SIZE - 1 - x;
    03138       stop &= TILE_SIZE - 1;
    03139
    03140       if (x == stop) {
    03141         return VETSB_ENTERED_STATION | (VehicleEnterTileStatus)(station_id << VETS_STATION_ID_OFFSET); // enter station
    03142       } else if (x < stop) {
    03143         v->vehstatus |= VS_TRAIN_SLOWING;
    03144         uint16 spd = max(0, (stop - x) * 20 - 15);
    03145         if (spd < v->cur_speed) v->cur_speed = spd;
    03146       }
    03147     }
    03148   } else if (v->type == VEH_ROAD) {
    03149     RoadVehicle *rv = RoadVehicle::From(v);
    03150     if (rv->state < RVSB_IN_ROAD_STOP && !IsReversingRoadTrackdir((Trackdir)rv->state) && rv->frame == 0) {
    03151       if (IsRoadStop(tile) && rv->IsFrontEngine()) {
    03152         /* Attempt to allocate a parking bay in a road stop */
    03153         return RoadStop::GetByTile(tile, GetRoadStopType(tile))->Enter(rv) ? VETSB_CONTINUE : VETSB_CANNOT_ENTER;
    03154       }
    03155     }
    03156   }
    03157
    03158   return VETSB_CONTINUE;
    03159 }
    03160
    03165 void TriggerWatchedCargoCallbacks(Station *st)
    03166 {
    03167   /* Collect cargoes accepted since the last big tick. */
    03168   uint cargoes = 0;
    03169   for (CargoID cid = 0; cid < NUM_CARGO; cid++) {
    03170     if (HasBit(st->goods[cid].acceptance_pickup, GoodsEntry::GES_ACCEPTED_BIGTICK)) SetBit(cargoes, cid);
    03171   }
    03172
    03173   /* Anything to do? */
    03174   if (cargoes == 0) return;
    03175
    03176   /* Loop over all houses in the catchment. */
    03177   Rect r = st->GetCatchmentRect();
    03178   TileArea ta(TileXY(r.left, r.top), TileXY(r.right, r.bottom));
    03179   TILE_AREA_LOOP(tile, ta) {
    03180     if (IsTileType(tile, MP_HOUSE)) {
    03181       WatchedCargoCallback(tile, cargoes);
    03182     }
    03183   }
    03184 }
    03185
    03192 static bool StationHandleBigTick(BaseStation *st)
    03193 {
    03194   if (!st->IsInUse()) {
    03195     if (++st->delete_ctr >= 8) delete st;
    03196     return false;
    03197   }
    03198
    03199   if (Station::IsExpected(st)) {
    03200     TriggerWatchedCargoCallbacks(Station::From(st));
    03201
    03202     for (CargoID i = 0; i < NUM_CARGO; i++) {
    03203       ClrBit(Station::From(st)->goods[i].acceptance_pickup, GoodsEntry::GES_ACCEPTED_BIGTICK);
    03204     }
    03205   }
    03206
    03207
    03208   if ((st->facilities & FACIL_WAYPOINT) == 0) UpdateStationAcceptance(Station::From(st), true);
    03209
    03210   return true;
    03211 }
    03212
    03213 static inline void byte_inc_sat(byte *p)
    03214 {
    03215   byte b = *p + 1;
    03216   if (b != 0) *p = b;
    03217 }
    03218
    03219 static void UpdateStationRating(Station *st)
    03220 {
    03221   bool waiting_changed = false;
    03222
    03223   byte_inc_sat(&st->time_since_load);
    03224   byte_inc_sat(&st->time_since_unload);
    03225
    03226   const CargoSpec *cs;
    03227   FOR_ALL_CARGOSPECS(cs) {
    03228     GoodsEntry *ge = &st->goods[cs->Index()];
    03229     /* Slowly increase the rating back to his original level in the case we
    03230      *  didn't deliver cargo yet to this station. This happens when a bribe
    03231      *  failed while you didn't moved that cargo yet to a station. */
    03232     if (!ge->HasRating() && ge->rating < INITIAL_STATION_RATING) {
    03233       ge->rating++;
    03234     }
    03235
    03236     /* Only change the rating if we are moving this cargo */
    03237     if (ge->HasRating()) {
    03238       byte_inc_sat(&ge->time_since_pickup);
    03239
    03240       bool skip = false;
    03241       int rating = 0;
    03242       uint waiting = ge->cargo.TotalCount();
    03243
    03244       /* num_dests is at least 1 if there is any cargo as
    03245        * INVALID_STATION is also a destination.
    03246        */
    03247       uint num_dests = (uint)ge->cargo.Packets()->MapSize();
    03248
    03249       /* Average amount of cargo per next hop, but prefer solitary stations
    03250        * with only one or two next hops. They are allowed to have more
    03251        * cargo waiting per next hop.
    03252        * With manual cargo distribution waiting_avg = waiting / 2 as then
    03253        * INVALID_STATION is the only destination.
    03254        */
    03255       uint waiting_avg = waiting / (num_dests + 1);
    03256
    03257       if (HasBit(cs->callback_mask, CBM_CARGO_STATION_RATING_CALC)) {
    03258         /* Perform custom station rating. If it succeeds the speed, days in transit and
    03259          * waiting cargo ratings must not be executed. */
    03260
    03261         /* NewGRFs expect last speed to be 0xFF when no vehicle has arrived yet. */
    03262         uint last_speed = ge->HasVehicleEverTriedLoading() ? ge->last_speed : 0xFF;
    03263
    03264         uint32 var18 = min(ge->time_since_pickup, 0xFF) | (min(ge->max_waiting_cargo, 0xFFFF) << 8) | (min(last_speed, 0xFF) << 24);
    03265         /* Convert to the 'old' vehicle types */
    03266         uint32 var10 = (st->last_vehicle_type == VEH_INVALID) ? 0x0 : (st->last_vehicle_type + 0x10);
    03267         uint16 callback = GetCargoCallback(CBID_CARGO_STATION_RATING_CALC, var10, var18, cs);
    03268         if (callback != CALLBACK_FAILED) {
    03269           skip = true;
    03270           rating = GB(callback, 0, 14);
    03271
    03272           /* Simulate a 15 bit signed value */
    03273           if (HasBit(callback, 14)) rating -= 0x4000;
    03274         }
    03275       }
    03276
    03277       if (!skip) {
    03278         int b = ge->last_speed - 85;
    03279         if (b >= 0) rating += b >> 2;
    03280
    03281         byte waittime = ge->time_since_pickup;
    03282         if (st->last_vehicle_type == VEH_SHIP) waittime >>= 2;
    03283         (waittime > 21) ||
    03284         (rating += 25, waittime > 12) ||
    03285         (rating += 25, waittime > 6) ||
    03286         (rating += 45, waittime > 3) ||
    03287         (rating += 35, true);
    03288
    03289         (rating -= 90, ge->max_waiting_cargo > 1500) ||
    03290         (rating += 55, ge->max_waiting_cargo > 1000) ||
    03291         (rating += 35, ge->max_waiting_cargo > 600) ||
    03292         (rating += 10, ge->max_waiting_cargo > 300) ||
    03293         (rating += 20, ge->max_waiting_cargo > 100) ||
    03294         (rating += 10, true);
    03295       }
    03296
    03297       if (Company::IsValidID(st->owner) && HasBit(st->town->statues, st->owner)) rating += 26;
    03298
    03299       byte age = ge->last_age;
    03300       (age >= 3) ||
    03301       (rating += 10, age >= 2) ||
    03302       (rating += 10, age >= 1) ||
    03303       (rating += 13, true);
    03304
    03305       {
    03306         int or_ = ge->rating; // old rating
    03307
    03308         /* only modify rating in steps of -2, -1, 0, 1 or 2 */
    03309         ge->rating = rating = or_ + Clamp(Clamp(rating, 0, 255) - or_, -2, 2);
    03310
    03311         /* if rating is <= 64 and more than 100 items waiting on average per destination,
    03312          * remove some random amount of goods from the station */
    03313         if (rating <= 64 && waiting_avg >= 100) {
    03314           int dec = Random() & 0x1F;
    03315           if (waiting_avg < 200) dec &= 7;
    03316           waiting -= (dec + 1) * num_dests;
    03317           waiting_changed = true;
    03318         }
    03319
    03320         /* if rating is <= 127 and there are any items waiting, maybe remove some goods. */
    03321         if (rating <= 127 && waiting != 0) {
    03322           uint32 r = Random();
    03323           if (rating <= (int)GB(r, 0, 7)) {
    03324             /* Need to have int, otherwise it will just overflow etc. */
    03325             waiting = max((int)waiting - (int)((GB(r, 8, 2) - 1) * num_dests), 0);
    03326             waiting_changed = true;
    03327           }
    03328         }
    03329
    03330         /* At some point we really must cap the cargo. Previously this
    03331          * was a strict 4095, but now we'll have a less strict, but
    03332          * increasingly aggressive truncation of the amount of cargo. */
    03333         static const uint WAITING_CARGO_THRESHOLD  = 1 << 12;
    03334         static const uint WAITING_CARGO_CUT_FACTOR = 1 <<  6;
    03335         static const uint MAX_WAITING_CARGO        = 1 << 15;
    03336
    03337         if (waiting > WAITING_CARGO_THRESHOLD) {
    03338           uint difference = waiting - WAITING_CARGO_THRESHOLD;
    03339           waiting -= (difference / WAITING_CARGO_CUT_FACTOR);
    03340
    03341           waiting = min(waiting, MAX_WAITING_CARGO);
    03342           waiting_changed = true;
    03343         }
    03344
    03345         /* We can't truncate cargo that's already reserved for loading.
    03346          * Thus StoredCount() here. */
    03347         if (waiting_changed && waiting < ge->cargo.AvailableCount()) {
    03348           /* Feed back the exact own waiting cargo at this station for the
    03349            * next rating calculation. */
    03350           ge->max_waiting_cargo = 0;
    03351
    03352           /* If truncating also punish the source stations' ratings to
    03353            * decrease the flow of incoming cargo. */
    03354
    03355           StationCargoAmountMap waiting_per_source;
    03356           ge->cargo.Truncate(ge->cargo.AvailableCount() - waiting, &waiting_per_source);
    03357           for (StationCargoAmountMap::iterator i(waiting_per_source.begin()); i != waiting_per_source.end(); ++i) {
    03358             Station *source_station = Station::GetIfValid(i->first);
    03359             if (source_station == NULL) continue;
    03360
    03361             GoodsEntry &source_ge = source_station->goods[cs->Index()];
    03362             source_ge.max_waiting_cargo = max(source_ge.max_waiting_cargo, i->second);
    03363           }
    03364         } else {
    03365           /* If the average number per next hop is low, be more forgiving. */
    03366           ge->max_waiting_cargo = waiting_avg;
    03367         }
    03368       }
    03369     }
    03370   }
    03371
    03372   StationID index = st->index;
    03373   if (waiting_changed) {
    03374     SetWindowDirty(WC_STATION_VIEW, index); // update whole window
    03375   } else {
    03376     SetWindowWidgetDirty(WC_STATION_VIEW, index, WID_SV_ACCEPT_RATING_LIST); // update only ratings list
    03377   }
    03378 }
    03379
    03388 void RerouteCargo(Station *st, CargoID c, StationID avoid, StationID avoid2)
    03389 {
    03390   GoodsEntry &ge = st->goods[c];
    03391
    03392   /* Reroute cargo in station. */
    03393   ge.cargo.Reroute(UINT_MAX, &ge.cargo, avoid, avoid2, &ge);
    03394
    03395   /* Reroute cargo staged to be transfered. */
    03396   for (std::list<Vehicle *>::iterator it(st->loading_vehicles.begin()); it != st->loading_vehicles.end(); ++it) {
    03397     for (Vehicle *v = *it; v != NULL; v = v->Next()) {
    03398       if (v->cargo_type != c) continue;
    03399       v->cargo.Reroute(UINT_MAX, &v->cargo, avoid, avoid2, &ge);
    03400     }
    03401   }
    03402 }
    03403
    03412 void DeleteStaleLinks(Station *from)
    03413 {
    03414   for (CargoID c = 0; c < NUM_CARGO; ++c) {
    03415     GoodsEntry &ge = from->goods[c];
    03416     LinkGraph *lg = LinkGraph::GetIfValid(ge.link_graph);
    03417     if (lg == NULL) continue;
    03418     Node node = (*lg)[ge.node];
    03419     for (EdgeIterator it(node.Begin()); it != node.End();) {
    03420       Edge edge = it->second;
    03421       Station *to = Station::Get((*lg)[it->first].Station());
    03422       assert(to->goods[c].node == it->first);
    03423       ++it; // Do that before removing the edge. Anything else may crash.
    03424       assert(_date >= edge.LastUpdate());
    03425       uint timeout = LinkGraph::MIN_TIMEOUT_DISTANCE + (DistanceManhattan(from->xy, to->xy) >> 3);
    03426       if ((uint)(_date - edge.LastUpdate()) > timeout) {
    03427         /* Have all vehicles refresh their next hops before deciding to
    03428          * remove the node. */
    03429         bool updated = false;
    03430         OrderList *l;
    03431         FOR_ALL_ORDER_LISTS(l) {
    03432           bool found_from = false;
    03433           bool found_to = false;
    03434           for (Order *order = l->GetFirstOrder(); order != NULL; order = order->next) {
    03435             if (!order->IsType(OT_GOTO_STATION) && !order->IsType(OT_IMPLICIT)) continue;
    03436             if (order->GetDestination() == from->index) {
    03437               found_from = true;
    03438               if (found_to) break;
    03439             } else if (order->GetDestination() == to->index) {
    03440               found_to = true;
    03441               if (found_from) break;
    03442             }
    03443           }
    03444           if (!found_to || !found_from) continue;
    03445           for (Vehicle *v = l->GetFirstSharedVehicle(); !updated && v != NULL; v = v->NextShared()) {
    03446             /* There is potential for optimization here:
    03447              * - Usually consists of the same order list are the same. It's probably better to
    03448              *   first check the first of each list, then the second of each list and so on.
    03449              * - We could try to figure out if we've seen a consist with the same cargo on the
    03450              *   same list already and if the consist can actually carry the cargo we're looking
    03451              *   for. With conditional and refit orders this is not quite trivial, though. */
    03452             LinkRefresher::Run(v, false); // Don't allow merging. Otherwise lg might get deleted.
    03453             if (edge.LastUpdate() == _date) updated = true;
    03454           }
    03455           if (updated) break;
    03456         }
    03457         if (!updated) {
    03458           /* If it's still considered dead remove it. */
    03459           node.RemoveEdge(to->goods[c].node);
    03460           ge.flows.DeleteFlows(to->index);
    03461           RerouteCargo(from, c, to->index, from->index);
    03462         }
    03463       } else if (edge.LastUnrestrictedUpdate() != INVALID_DATE && (uint)(_date - edge.LastUnrestrictedUpdate()) > timeout) {
    03464         edge.Restrict();
    03465         ge.flows.RestrictFlows(to->index);
    03466         RerouteCargo(from, c, to->index, from->index);
    03467       } else if (edge.LastRestrictedUpdate() != INVALID_DATE && (uint)(_date - edge.LastRestrictedUpdate()) > timeout) {
    03468         edge.Release();
    03469       }
    03470     }
    03471     assert(_date >= lg->LastCompression());
    03472     if ((uint)(_date - lg->LastCompression()) > LinkGraph::COMPRESSION_INTERVAL) {
    03473       lg->Compress();
    03474     }
    03475   }
    03476 }
    03477
    03486 void IncreaseStats(Station *st, CargoID cargo, StationID next_station_id, uint capacity, uint usage)
    03487 {
    03488   GoodsEntry &ge1 = st->goods[cargo];
    03489   Station *st2 = Station::Get(next_station_id);
    03490   GoodsEntry &ge2 = st2->goods[cargo];
    03491   LinkGraph *lg = NULL;
    03492   if (ge1.link_graph == INVALID_LINK_GRAPH) {
    03493     if (ge2.link_graph == INVALID_LINK_GRAPH) {
    03494       if (LinkGraph::CanAllocateItem()) {
    03495         lg = new LinkGraph(cargo);
    03496         LinkGraphSchedule::Instance()->Queue(lg);
    03497         ge2.link_graph = lg->index;
    03498         ge2.node = lg->AddNode(st2);
    03499       } else {
    03500         DEBUG(misc, 0, "Can't allocate link graph");
    03501       }
    03502     } else {
    03503       lg = LinkGraph::Get(ge2.link_graph);
    03504     }
    03505     if (lg) {
    03506       ge1.link_graph = lg->index;
    03507       ge1.node = lg->AddNode(st);
    03508     }
    03509   } else if (ge2.link_graph == INVALID_LINK_GRAPH) {
    03510     lg = LinkGraph::Get(ge1.link_graph);
    03511     ge2.link_graph = lg->index;
    03512     ge2.node = lg->AddNode(st2);
    03513   } else {
    03514     lg = LinkGraph::Get(ge1.link_graph);
    03515     if (ge1.link_graph != ge2.link_graph) {
    03516       LinkGraph *lg2 = LinkGraph::Get(ge2.link_graph);
    03517       if (lg->Size() < lg2->Size()) {
    03518         LinkGraphSchedule::Instance()->Unqueue(lg);
    03519         lg2->Merge(lg); // Updates GoodsEntries of lg
    03520         lg = lg2;
    03521       } else {
    03522         LinkGraphSchedule::Instance()->Unqueue(lg2);
    03523         lg->Merge(lg2); // Updates GoodsEntries of lg2
    03524       }
    03525     }
    03526   }
    03527   if (lg != NULL) {
    03528     (*lg)[ge1.node].UpdateEdge(ge2.node, capacity, usage);
    03529   }
    03530 }
    03531
    03538 void IncreaseStats(Station *st, const Vehicle *front, StationID next_station_id)
    03539 {
    03540   for (const Vehicle *v = front; v != NULL; v = v->Next()) {
    03541     if (v->refit_cap > 0) {
    03542       /* The cargo count can indeed be higher than the refit_cap if
    03543        * wagons have been auto-replaced and subsequently auto-
    03544        * refitted to a higher capacity. The cargo gets redistributed
    03545        * among the wagons in that case.
    03546        * As usage is not such an important figure anyway we just
    03547        * ignore the additional cargo then.*/
    03548       IncreaseStats(st, v->cargo_type, next_station_id, v->refit_cap,
    03549         min(v->refit_cap, v->cargo.StoredCount()));
    03550     }
    03551   }
    03552 }
    03553
    03554 /* called for every station each tick */
    03555 static void StationHandleSmallTick(BaseStation *st)
    03556 {
    03557   if ((st->facilities & FACIL_WAYPOINT) != 0 || !st->IsInUse()) return;
    03558
    03559   byte b = st->delete_ctr + 1;
    03560   if (b >= STATION_RATING_TICKS) b = 0;
    03561   st->delete_ctr = b;
    03562
    03563   if (b == 0) UpdateStationRating(Station::From(st));
    03564 }
    03565
    03566 void OnTick_Station()
    03567 {
    03568   if (_game_mode == GM_EDITOR) return;
    03569
    03570   BaseStation *st;
    03571   FOR_ALL_BASE_STATIONS(st) {
    03572     StationHandleSmallTick(st);
    03573
    03574     /* Clean up the link graph about once a week. */
    03575     if (Station::IsExpected(st) && (_tick_counter + st->index) % STATION_LINKGRAPH_TICKS == 0) {
    03576       DeleteStaleLinks(Station::From(st));
    03577     };
    03578
    03579     /* Run STATION_ACCEPTANCE_TICKS = 250 tick interval trigger for station animation.
    03580      * Station index is included so that triggers are not all done
    03581      * at the same time. */
    03582     if ((_tick_counter + st->index) % STATION_ACCEPTANCE_TICKS == 0) {
    03583       /* Stop processing this station if it was deleted */
    03584       if (!StationHandleBigTick(st)) continue;
    03585       TriggerStationAnimation(st, st->xy, SAT_250_TICKS);
    03586       if (Station::IsExpected(st)) AirportAnimationTrigger(Station::From(st), AAT_STATION_250_TICKS);
    03587     }
    03588   }
    03589 }
    03590
    03592 void StationMonthlyLoop()
    03593 {
    03594   Station *st;
    03595
    03596   FOR_ALL_STATIONS(st) {
    03597     for (CargoID i = 0; i < NUM_CARGO; i++) {
    03598       GoodsEntry *ge = &st->goods[i];
    03599       SB(ge->acceptance_pickup, GoodsEntry::GES_LAST_MONTH, 1, GB(ge->acceptance_pickup, GoodsEntry::GES_CURRENT_MONTH, 1));
    03600       ClrBit(ge->acceptance_pickup, GoodsEntry::GES_CURRENT_MONTH);
    03601     }
    03602   }
    03603 }
    03604
    03605
    03606 void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint radius)
    03607 {
    03608   Station *st;
    03609
    03610   FOR_ALL_STATIONS(st) {
    03611     if (st->owner == owner &&
    03612         DistanceManhattan(tile, st->xy) <= radius) {
    03613       for (CargoID i = 0; i < NUM_CARGO; i++) {
    03614         GoodsEntry *ge = &st->goods[i];
    03615
    03616         if (ge->acceptance_pickup != 0) {
    03617           ge->rating = Clamp(ge->rating + amount, 0, 255);
    03618         }
    03619       }
    03620     }
    03621   }
    03622 }
    03623
    03624 static uint UpdateStationWaiting(Station *st, CargoID type, uint amount, SourceType source_type, SourceID source_id)
    03625 {
    03626   /* We can't allocate a CargoPacket? Then don't do anything
    03627    * at all; i.e. just discard the incoming cargo. */
    03628   if (!CargoPacket::CanAllocateItem()) return 0;
    03629
    03630   GoodsEntry &ge = st->goods[type];
    03631   amount += ge.amount_fract;
    03632   ge.amount_fract = GB(amount, 0, 8);
    03633
    03634   amount >>= 8;
    03635   /* No new "real" cargo item yet. */
    03636   if (amount == 0) return 0;
    03637
    03638   StationID next = ge.GetVia(st->index);
    03639   ge.cargo.Append(new CargoPacket(st->index, st->xy, amount, source_type, source_id), next);
    03640   LinkGraph *lg = NULL;
    03641   if (ge.link_graph == INVALID_LINK_GRAPH) {
    03642     if (LinkGraph::CanAllocateItem()) {
    03643       lg = new LinkGraph(type);
    03644       LinkGraphSchedule::Instance()->Queue(lg);
    03645       ge.link_graph = lg->index;
    03646       ge.node = lg->AddNode(st);
    03647     } else {
    03648       DEBUG(misc, 0, "Can't allocate link graph");
    03649     }
    03650   } else {
    03651     lg = LinkGraph::Get(ge.link_graph);
    03652   }
    03653   if (lg != NULL) (*lg)[ge.node].UpdateSupply(amount);
    03654
    03655   if (!ge.HasRating()) {
    03656     InvalidateWindowData(WC_STATION_LIST, st->index);
    03657     SetBit(ge.acceptance_pickup, GoodsEntry::GES_PICKUP);
    03658   }
    03659
    03660   TriggerStationRandomisation(st, st->xy, SRT_NEW_CARGO, type);
    03661   TriggerStationAnimation(st, st->xy, SAT_NEW_CARGO, type);
    03662   AirportAnimationTrigger(st, AAT_STATION_NEW_CARGO, type);
    03663
    03664   SetWindowDirty(WC_STATION_VIEW, st->index);
    03665   st->MarkTilesDirty(true);
    03666   return amount;
    03667 }
    03668
    03669 static bool IsUniqueStationName(const char *name)
    03670 {
    03671   const Station *st;
    03672
    03673   FOR_ALL_STATIONS(st) {
    03674     if (st->name != NULL && strcmp(st->name, name) == 0) return false;
    03675   }
    03676
    03677   return true;
    03678 }
    03679
    03689 CommandCost CmdRenameStation(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    03690 {
    03691   Station *st = Station::GetIfValid(p1);
    03692   if (st == NULL) return CMD_ERROR;
    03693
    03694   CommandCost ret = CheckOwnership(st->owner);
    03695   if (ret.Failed()) return ret;
    03696
    03697   bool reset = StrEmpty(text);
    03698
    03699   if (!reset) {
    03700     if (Utf8StringLength(text) >= MAX_LENGTH_STATION_NAME_CHARS) return CMD_ERROR;
    03701     if (!IsUniqueStationName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
    03702   }
    03703
    03704   if (flags & DC_EXEC) {
    03705     free(st->name);
    03706     st->name = reset ? NULL : strdup(text);
    03707
    03708     st->UpdateVirtCoord();
    03709     InvalidateWindowData(WC_STATION_LIST, st->owner, 1);
    03710   }
    03711
    03712   return CommandCost();
    03713 }
    03714
    03721 void FindStationsAroundTiles(const TileArea &location, StationList *stations)
    03722 {
    03723   /* area to search = producer plus station catchment radius */
    03724   uint max_rad = (_settings_game.station.modified_catchment ? MAX_CATCHMENT : CA_UNMODIFIED);
    03725
    03726   uint x = TileX(location.tile);
    03727   uint y = TileY(location.tile);
    03728
    03729   uint min_x = (x > max_rad) ? x - max_rad : 0;
    03730   uint max_x = x + location.w + max_rad;
    03731   uint min_y = (y > max_rad) ? y - max_rad : 0;
    03732   uint max_y = y + location.h + max_rad;
    03733
    03734   if (min_x == 0 && _settings_game.construction.freeform_edges) min_x = 1;
    03735   if (min_y == 0 && _settings_game.construction.freeform_edges) min_y = 1;
    03736   if (max_x >= MapSizeX()) max_x = MapSizeX() - 1;
    03737   if (max_y >= MapSizeY()) max_y = MapSizeY() - 1;
    03738
    03739   for (uint cy = min_y; cy < max_y; cy++) {
    03740     for (uint cx = min_x; cx < max_x; cx++) {
    03741       TileIndex cur_tile = TileXY(cx, cy);
    03742       if (!IsTileType(cur_tile, MP_STATION)) continue;
    03743
    03744       Station *st = Station::GetByTile(cur_tile);
    03745       /* st can be NULL in case of waypoints */
    03746       if (st == NULL) continue;
    03747
    03748       if (_settings_game.station.modified_catchment) {
    03749         int rad = st->GetCatchmentRadius();
    03750         int rad_x = cx - x;
    03751         int rad_y = cy - y;
    03752
    03753         if (rad_x < -rad || rad_x >= rad + location.w) continue;
    03754         if (rad_y < -rad || rad_y >= rad + location.h) continue;
    03755       }
    03756
    03757       /* Insert the station in the set. This will fail if it has
    03758        * already been added.
    03759        */
    03760       stations->Include(st);
    03761     }
    03762   }
    03763 }
    03764
    03769 const StationList *StationFinder::GetStations()
    03770 {
    03771   if (this->tile != INVALID_TILE) {
    03772     FindStationsAroundTiles(*this, &this->stations);
    03773     this->tile = INVALID_TILE;
    03774   }
    03775   return &this->stations;
    03776 }
    03777
    03778 uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations)
    03779 {
    03780   /* Return if nothing to do. Also the rounding below fails for 0. */
    03781   if (amount == 0) return 0;
    03782
    03783   Station *st1 = NULL;   // Station with best rating
    03784   Station *st2 = NULL;   // Second best station
    03785   uint best_rating1 = 0; // rating of st1
    03786   uint best_rating2 = 0; // rating of st2
    03787
    03788   for (Station * const *st_iter = all_stations->Begin(); st_iter != all_stations->End(); ++st_iter) {
    03789     Station *st = *st_iter;
    03790
    03791     /* Is the station reserved exclusively for somebody else? */
    03792     if (st->town->exclusive_counter > 0 && st->town->exclusivity != st->owner) continue;
    03793
    03794     if (st->goods[type].rating == 0) continue; // Lowest possible rating, better not to give cargo anymore
    03795
    03796     if (_settings_game.order.selectgoods && !st->goods[type].HasVehicleEverTriedLoading()) continue; // Selectively servicing stations, and not this one
    03797
    03798     if (IsCargoInClass(type, CC_PASSENGERS)) {
    03799       if (st->facilities == FACIL_TRUCK_STOP) continue; // passengers are never served by just a truck stop
    03800     } else {
    03801       if (st->facilities == FACIL_BUS_STOP) continue; // non-passengers are never served by just a bus stop
    03802     }
    03803
    03804     /* This station can be used, add it to st1/st2 */
    03805     if (st1 == NULL || st->goods[type].rating >= best_rating1) {
    03806       st2 = st1; best_rating2 = best_rating1; st1 = st; best_rating1 = st->goods[type].rating;
    03807     } else if (st2 == NULL || st->goods[type].rating >= best_rating2) {
    03808       st2 = st; best_rating2 = st->goods[type].rating;
    03809     }
    03810   }
    03811
    03812   /* no stations around at all? */
    03813   if (st1 == NULL) return 0;
    03814
    03815   /* From now we'll calculate with fractal cargo amounts.
    03816    * First determine how much cargo we really have. */
    03817   amount *= best_rating1 + 1;
    03818
    03819   if (st2 == NULL) {
    03820     /* only one station around */
    03821     return UpdateStationWaiting(st1, type, amount, source_type, source_id);
    03822   }
    03823
    03824   /* several stations around, the best two (highest rating) are in st1 and st2 */
    03825   assert(st1 != NULL);
    03826   assert(st2 != NULL);
    03827   assert(best_rating1 != 0 || best_rating2 != 0);
    03828
    03829   /* Then determine the amount the worst station gets. We do it this way as the
    03830    * best should get a bonus, which in this case is the rounding difference from
    03831    * this calculation. In reality that will mean the bonus will be pretty low.
    03832    * Nevertheless, the best station should always get the most cargo regardless
    03833    * of rounding issues. */
    03834   uint worst_cargo = amount * best_rating2 / (best_rating1 + best_rating2);
    03835   assert(worst_cargo <= (amount - worst_cargo));
    03836
    03837   /* And then send the cargo to the stations! */
    03838   uint moved = UpdateStationWaiting(st1, type, amount - worst_cargo, source_type, source_id);
    03839   /* These two UpdateStationWaiting's can't be in the statement as then the order
    03840    * of execution would be undefined and that could cause desyncs with callbacks. */
    03841   return moved + UpdateStationWaiting(st2, type, worst_cargo, source_type, source_id);
    03842 }
    03843
    03844 void BuildOilRig(TileIndex tile)
    03845 {
    03846   if (!Station::CanAllocateItem()) {
    03847     DEBUG(misc, 0, "Can't allocate station for oilrig at 0x%X, reverting to oilrig only", tile);
    03848     return;
    03849   }
    03850
    03851   Station *st = new Station(tile);
    03852   st->town = ClosestTownFromTile(tile, UINT_MAX);
    03853
    03854   st->string_id = GenerateStationName(st, tile, STATIONNAMING_OILRIG);
    03855
    03856   assert(IsTileType(tile, MP_INDUSTRY));
    03857   DeleteAnimatedTile(tile);
    03858   MakeOilrig(tile, st->index, GetWaterClass(tile));
    03859
    03860   st->owner = OWNER_NONE;
    03861   st->airport.type = AT_OILRIG;
    03862   st->airport.Add(tile);
    03863   st->dock_tile = tile;
    03864   st->facilities = FACIL_AIRPORT | FACIL_DOCK;
    03865   st->build_date = _date;
    03866
    03867   st->rect.BeforeAddTile(tile, StationRect::ADD_FORCE);
    03868
    03869   st->UpdateVirtCoord();
    03870   UpdateStationAcceptance(st, false);
    03871   st->RecomputeIndustriesNear();
    03872 }
    03873
    03874 void DeleteOilRig(TileIndex tile)
    03875 {
    03876   Station *st = Station::GetByTile(tile);
    03877
    03878   MakeWaterKeepingClass(tile, OWNER_NONE);
    03879
    03880   st->dock_tile = INVALID_TILE;
    03881   st->airport.Clear();
    03882   st->facilities &= ~(FACIL_AIRPORT | FACIL_DOCK);
    03883   st->airport.flags = 0;
    03884
    03885   st->rect.AfterRemoveTile(st, tile);
    03886
    03887   st->UpdateVirtCoord();
    03888   st->RecomputeIndustriesNear();
    03889   if (!st->IsInUse()) delete st;
    03890 }
    03891
    03892 static void ChangeTileOwner_Station(TileIndex tile, Owner old_owner, Owner new_owner)
    03893 {
    03894   if (IsRoadStopTile(tile)) {
    03895     for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
    03896       /* Update all roadtypes, no matter if they are present */
    03897       if (GetRoadOwner(tile, rt) == old_owner) {
    03898         if (HasTileRoadType(tile, rt)) {
    03899           /* A drive-through road-stop has always two road bits. No need to dirty windows here, we'll redraw the whole screen anyway. */
    03900           Company::Get(old_owner)->infrastructure.road[rt] -= 2;
    03901           if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.road[rt] += 2;
    03902         }
    03903         SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
    03904       }
    03905     }
    03906   }
    03907
    03908   if (!IsTileOwner(tile, old_owner)) return;
    03909
    03910   if (new_owner != INVALID_OWNER) {
    03911     /* Update company infrastructure counts. Only do it here
    03912      * if the new owner is valid as otherwise the clear
    03913      * command will do it for us. No need to dirty windows
    03914      * here, we'll redraw the whole screen anyway.*/
    03915     Company *old_company = Company::Get(old_owner);
    03916     Company *new_company = Company::Get(new_owner);
    03917
    03918     /* Update counts for underlying infrastructure. */
    03919     switch (GetStationType(tile)) {
    03920       case STATION_RAIL:
    03921       case STATION_WAYPOINT:
    03922         if (!IsStationTileBlocked(tile)) {
    03923           old_company->infrastructure.rail[GetRailType(tile)]--;
    03924           new_company->infrastructure.rail[GetRailType(tile)]++;
    03925         }
    03926         break;
    03927
    03928       case STATION_BUS:
    03929       case STATION_TRUCK:
    03930         /* Road stops were already handled above. */
    03931         break;
    03932
    03933       case STATION_BUOY:
    03934       case STATION_DOCK:
    03935         if (GetWaterClass(tile) == WATER_CLASS_CANAL) {
    03936           old_company->infrastructure.water--;
    03937           new_company->infrastructure.water++;
    03938         }
    03939         break;
    03940
    03941       default:
    03942         break;
    03943     }
    03944
    03945     /* Update station tile count. */
    03946     if (!IsBuoy(tile) && !IsAirport(tile)) {
    03947       old_company->infrastructure.station--;
    03948       new_company->infrastructure.station++;
    03949     }
    03950
    03951     /* for buoys, owner of tile is owner of water, st->owner == OWNER_NONE */
    03952     SetTileOwner(tile, new_owner);
    03953     InvalidateWindowClassesData(WC_STATION_LIST, 0);
    03954   } else {
    03955     if (IsDriveThroughStopTile(tile)) {
    03956       /* Remove the drive-through road stop */
    03957       DoCommand(tile, 1 | 1 << 8, (GetStationType(tile) == STATION_TRUCK) ? ROADSTOP_TRUCK : ROADSTOP_BUS, DC_EXEC | DC_BANKRUPT, CMD_REMOVE_ROAD_STOP);
    03958       assert(IsTileType(tile, MP_ROAD));
    03959       /* Change owner of tile and all roadtypes */
    03960       ChangeTileOwner(tile, old_owner, new_owner);
    03961     } else {
    03962       DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
    03963       /* Set tile owner of water under (now removed) buoy and dock to OWNER_NONE.
    03964        * Update owner of buoy if it was not removed (was in orders).
    03965        * Do not update when owned by OWNER_WATER (sea and rivers). */
    03966       if ((IsTileType(tile, MP_WATER) || IsBuoyTile(tile)) && IsTileOwner(tile, old_owner)) SetTileOwner(tile, OWNER_NONE);
    03967     }
    03968   }
    03969 }
    03970
    03979 static bool CanRemoveRoadWithStop(TileIndex tile, DoCommandFlag flags)
    03980 {
    03981   /* Yeah... water can always remove stops, right? */
    03982   if (_current_company == OWNER_WATER) return true;
    03983
    03984   RoadTypes rts = GetRoadTypes(tile);
    03985   if (HasBit(rts, ROADTYPE_TRAM)) {
    03986     Owner tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    03987     if (tram_owner != OWNER_NONE && CheckOwnership(tram_owner).Failed()) return false;
    03988   }
    03989   if (HasBit(rts, ROADTYPE_ROAD)) {
    03990     Owner road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    03991     if (road_owner != OWNER_TOWN) {
    03992       if (road_owner != OWNER_NONE && CheckOwnership(road_owner).Failed()) return false;
    03993     } else {
    03994       if (CheckAllowRemoveRoad(tile, GetAnyRoadBits(tile, ROADTYPE_ROAD), OWNER_TOWN, ROADTYPE_ROAD, flags).Failed()) return false;
    03995     }
    03996   }
    03997
    03998   return true;
    03999 }
    04000
    04007 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags)
    04008 {
    04009   if (flags & DC_AUTO) {
    04010     switch (GetStationType(tile)) {
    04011       default: break;
    04012       case STATION_RAIL:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_RAILROAD);
    04013       case STATION_WAYPOINT: return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
    04014       case STATION_AIRPORT:  return_cmd_error(STR_ERROR_MUST_DEMOLISH_AIRPORT_FIRST);
    04015       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);
    04016       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);
    04017       case STATION_BUOY:     return_cmd_error(STR_ERROR_BUOY_IN_THE_WAY);
    04018       case STATION_DOCK:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_DOCK_FIRST);
    04019       case STATION_OILRIG:
    04020         SetDParam(1, STR_INDUSTRY_NAME_OIL_RIG);
    04021         return_cmd_error(STR_ERROR_GENERIC_OBJECT_IN_THE_WAY);
    04022     }
    04023   }
    04024
    04025   switch (GetStationType(tile)) {
    04026     case STATION_RAIL:     return RemoveRailStation(tile, flags);
    04027     case STATION_WAYPOINT: return RemoveRailWaypoint(tile, flags);
    04028     case STATION_AIRPORT:  return RemoveAirport(tile, flags);
    04029     case STATION_TRUCK:
    04030       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
    04031         return_cmd_error(STR_ERROR_MUST_DEMOLISH_TRUCK_STATION_FIRST);
    04032       }
    04033       return RemoveRoadStop(tile, flags);
    04034     case STATION_BUS:
    04035       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
    04036         return_cmd_error(STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST);
    04037       }
    04038       return RemoveRoadStop(tile, flags);
    04039     case STATION_BUOY:     return RemoveBuoy(tile, flags);
    04040     case STATION_DOCK:     return RemoveDock(tile, flags);
    04041     default: break;
    04042   }
    04043
    04044   return CMD_ERROR;
    04045 }
    04046
    04047 static CommandCost TerraformTile_Station(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
    04048 {
    04049   if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
    04050     /* TODO: If you implement newgrf callback 149 'land slope check', you have to decide what to do with it here.
    04051      *       TTDP does not call it.
    04052      */
    04053     if (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new)) {
    04054       switch (GetStationType(tile)) {
    04055         case STATION_WAYPOINT:
    04056         case STATION_RAIL: {
    04057           DiagDirection direction = AxisToDiagDir(GetRailStationAxis(tile));
    04058           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    04059           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    04060           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    04061         }
    04062
    04063         case STATION_AIRPORT:
    04064           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    04065
    04066         case STATION_TRUCK:
    04067         case STATION_BUS: {
    04068           DiagDirection direction = GetRoadStopDir(tile);
    04069           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    04070           if (IsDriveThroughStopTile(tile)) {
    04071             if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    04072           }
    04073           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    04074         }
    04075
    04076         default: break;
    04077       }
    04078     }
    04079   }
    04080   return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    04081 }
    04082
    04088 uint FlowStat::GetShare(StationID st) const
    04089 {
    04090   uint32 prev = 0;
    04091   for (SharesMap::const_iterator it = this->shares.begin(); it != this->shares.end(); ++it) {
    04092     if (it->second == st) {
    04093       return it->first - prev;
    04094     } else {
    04095       prev = it->first;
    04096     }
    04097   }
    04098   return 0;
    04099 }
    04100
    04107 StationID FlowStat::GetVia(StationID excluded, StationID excluded2) const
    04108 {
    04109   if (this->unrestricted == 0) return INVALID_STATION;
    04110   assert(!this->shares.empty());
    04111   SharesMap::const_iterator it = this->shares.upper_bound(RandomRange(this->unrestricted));
    04112   assert(it != this->shares.end() && it->first <= this->unrestricted);
    04113   if (it->second != excluded && it->second != excluded2) return it->second;
    04114
    04115   /* We've hit one of the excluded stations.
    04116    * Draw another share, from outside its range. */
    04117
    04118   uint end = it->first;
    04119   uint begin = (it == this->shares.begin() ? 0 : (--it)->first);
    04120   uint interval = end - begin;
    04121   if (interval >= this->unrestricted) return INVALID_STATION; // Only one station in the map.
    04122   uint new_max = this->unrestricted - interval;
    04123   uint rand = RandomRange(new_max);
    04124   SharesMap::const_iterator it2 = (rand < begin) ? this->shares.upper_bound(rand) :
    04125       this->shares.upper_bound(rand + interval);
    04126   assert(it2 != this->shares.end() && it2->first <= this->unrestricted);
    04127   if (it2->second != excluded && it2->second != excluded2) return it2->second;
    04128
    04129   /* We've hit the second excluded station.
    04130    * Same as before, only a bit more complicated. */
    04131
    04132   uint end2 = it2->first;
    04133   uint begin2 = (it2 == this->shares.begin() ? 0 : (--it2)->first);
    04134   uint interval2 = end2 - begin2;
    04135   if (interval2 >= new_max) return INVALID_STATION; // Only the two excluded stations in the map.
    04136   new_max -= interval2;
    04137   if (begin > begin2) {
    04138     Swap(begin, begin2);
    04139     Swap(end, end2);
    04140     Swap(interval, interval2);
    04141   }
    04142   rand = RandomRange(new_max);
    04143   SharesMap::const_iterator it3 = this->shares.upper_bound(this->unrestricted);
    04144   if (rand < begin) {
    04145     it3 = this->shares.upper_bound(rand);
    04146   } else if (rand < begin2 - interval) {
    04147     it3 = this->shares.upper_bound(rand + interval);
    04148   } else {
    04149     it3 = this->shares.upper_bound(rand + interval + interval2);
    04150   }
    04151   assert(it3 != this->shares.end() && it3->first <= this->unrestricted);
    04152   return it3->second;
    04153 }
    04154
    04160 void FlowStat::Invalidate()
    04161 {
    04162   assert(!this->shares.empty());
    04163   SharesMap new_shares;
    04164   uint i = 0;
    04165   for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
    04166     new_shares[++i] = it->second;
    04167     if (it->first == this->unrestricted) this->unrestricted = i;
    04168   }
    04169   this->shares.swap(new_shares);
    04170   assert(!this->shares.empty() && this->unrestricted <= (--this->shares.end())->first);
    04171 }
    04172
    04179 void FlowStat::ChangeShare(StationID st, int flow)
    04180 {
    04181   /* We assert only before changing as afterwards the shares can actually
    04182    * be empty. In that case the whole flow stat must be deleted then. */
    04183   assert(!this->shares.empty());
    04184
    04185   uint removed_shares = 0;
    04186   uint added_shares = 0;
    04187   uint last_share = 0;
    04188   SharesMap new_shares;
    04189   for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
    04190     if (it->second == st) {
    04191       if (flow < 0) {
    04192         uint share = it->first - last_share;
    04193         if (flow == INT_MIN || (uint)(-flow) >= share) {
    04194           removed_shares += share;
    04195           if (it->first <= this->unrestricted) this->unrestricted -= share;
    04196           if (flow != INT_MIN) flow += share;
    04197           last_share = it->first;
    04198           continue; // remove the whole share
    04199         }
    04200         removed_shares += (uint)(-flow);
    04201       } else {
    04202         added_shares += (uint)(flow);
    04203       }
    04204       if (it->first <= this->unrestricted) this->unrestricted += flow;
    04205
    04206       /* If we don't continue above the whole flow has been added or
    04207        * removed. */
    04208       flow = 0;
    04209     }
    04210     new_shares[it->first + added_shares - removed_shares] = it->second;
    04211     last_share = it->first;
    04212   }
    04213   if (flow > 0) {
    04214     new_shares[last_share + (uint)flow] = st;
    04215     if (this->unrestricted < last_share) {
    04216       this->ReleaseShare(st);
    04217     } else {
    04218       this->unrestricted += flow;
    04219     }
    04220   }
    04221   this->shares.swap(new_shares);
    04222 }
    04223
    04229 void FlowStat::RestrictShare(StationID st)
    04230 {
    04231   assert(!this->shares.empty());
    04232   uint flow = 0;
    04233   uint last_share = 0;
    04234   SharesMap new_shares;
    04235   for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
    04236     if (flow == 0) {
    04237       if (it->first > this->unrestricted) return; // Not present or already restricted.
    04238       if (it->second == st) {
    04239         flow = it->first - last_share;
    04240         this->unrestricted -= flow;
    04241       } else {
    04242         new_shares[it->first] = it->second;
    04243       }
    04244     } else {
    04245       new_shares[it->first - flow] = it->second;
    04246     }
    04247     last_share = it->first;
    04248   }
    04249   if (flow == 0) return;
    04250   new_shares[last_share + flow] = st;
    04251   this->shares.swap(new_shares);
    04252   assert(!this->shares.empty());
    04253 }
    04254
    04260 void FlowStat::ReleaseShare(StationID st)
    04261 {
    04262   assert(!this->shares.empty());
    04263   uint flow = 0;
    04264   uint next_share = 0;
    04265   bool found = false;
    04266   for (SharesMap::reverse_iterator it(this->shares.rbegin()); it != this->shares.rend(); ++it) {
    04267     if (it->first < this->unrestricted) return; // Note: not <= as the share may hit the limit.
    04268     if (found) {
    04269       flow = next_share - it->first;
    04270       this->unrestricted += flow;
    04271       break;
    04272     } else {
    04273       if (it->first == this->unrestricted) return; // !found -> Limit not hit.
    04274       if (it->second == st) found = true;
    04275     }
    04276     next_share = it->first;
    04277   }
    04278   if (flow == 0) return;
    04279   SharesMap new_shares;
    04280   new_shares[flow] = st;
    04281   for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
    04282     if (it->second != st) {
    04283       new_shares[flow + it->first] = it->second;
    04284     } else {
    04285       flow = 0;
    04286     }
    04287   }
    04288   this->shares.swap(new_shares);
    04289   assert(!this->shares.empty());
    04290 }
    04291
    04296 void FlowStat::ScaleToMonthly(uint runtime)
    04297 {
    04298   SharesMap new_shares;
    04299   uint share = 0;
    04300   for (SharesMap::iterator i = this->shares.begin(); i != this->shares.end(); ++i) {
    04301     share = max(share + 1, i->first * 30 / runtime);
    04302     new_shares[share] = i->second;
    04303     if (this->unrestricted == i->first) this->unrestricted = share;
    04304   }
    04305   this->shares.swap(new_shares);
    04306 }
    04307
    04314 void FlowStatMap::AddFlow(StationID origin, StationID via, uint flow)
    04315 {
    04316   FlowStatMap::iterator origin_it = this->find(origin);
    04317   if (origin_it == this->end()) {
    04318     this->insert(std::make_pair(origin, FlowStat(via, flow)));
    04319   } else {
    04320     origin_it->second.ChangeShare(via, flow);
    04321     assert(!origin_it->second.GetShares()->empty());
    04322   }
    04323 }
    04324
    04333 void FlowStatMap::PassOnFlow(StationID origin, StationID via, uint flow)
    04334 {
    04335   FlowStatMap::iterator prev_it = this->find(origin);
    04336   if (prev_it == this->end()) {
    04337     FlowStat fs(via, flow);
    04338     fs.AppendShare(INVALID_STATION, flow);
    04339     this->insert(std::make_pair(origin, fs));
    04340   } else {
    04341     prev_it->second.ChangeShare(via, flow);
    04342     prev_it->second.ChangeShare(INVALID_STATION, flow);
    04343     assert(!prev_it->second.GetShares()->empty());
    04344   }
    04345 }
    04346
    04351 void FlowStatMap::FinalizeLocalConsumption(StationID self)
    04352 {
    04353   for (FlowStatMap::iterator i = this->begin(); i != this->end(); ++i) {
    04354     FlowStat &fs = i->second;
    04355     uint local = fs.GetShare(INVALID_STATION);
    04356     if (local > INT_MAX) { // make sure it fits in an int
    04357       fs.ChangeShare(self, -INT_MAX);
    04358       fs.ChangeShare(INVALID_STATION, -INT_MAX);
    04359       local -= INT_MAX;
    04360     }
    04361     fs.ChangeShare(self, -(int)local);
    04362     fs.ChangeShare(INVALID_STATION, -(int)local);
    04363
    04364     /* If the local share is used up there must be a share for some
    04365      * remote station. */
    04366     assert(!fs.GetShares()->empty());
    04367   }
    04368 }
    04369
    04376 StationIDStack FlowStatMap::DeleteFlows(StationID via)
    04377 {
    04378   StationIDStack ret;
    04379   for (FlowStatMap::iterator f_it = this->begin(); f_it != this->end();) {
    04380     FlowStat &s_flows = f_it->second;
    04381     s_flows.ChangeShare(via, INT_MIN);
    04382     if (s_flows.GetShares()->empty()) {
    04383       ret.Push(f_it->first);
    04384       this->erase(f_it++);
    04385     } else {
    04386       ++f_it;
    04387     }
    04388   }
    04389   return ret;
    04390 }
    04391
    04396 void FlowStatMap::RestrictFlows(StationID via)
    04397 {
    04398   for (FlowStatMap::iterator it = this->begin(); it != this->end(); ++it) {
    04399     it->second.RestrictShare(via);
    04400   }
    04401 }
    04402
    04407 void FlowStatMap::ReleaseFlows(StationID via)
    04408 {
    04409   for (FlowStatMap::iterator it = this->begin(); it != this->end(); ++it) {
    04410     it->second.ReleaseShare(via);
    04411   }
    04412 }
    04413
    04419 uint GoodsEntry::GetSumFlowVia(StationID via) const
    04420 {
    04421   uint ret = 0;
    04422   for (FlowStatMap::const_iterator i = this->flows.begin(); i != this->flows.end(); ++i) {
    04423     ret += i->second.GetShare(via);
    04424   }
    04425   return ret;
    04426 }
    04427
    04428 extern const TileTypeProcs _tile_type_station_procs = {
    04429   DrawTile_Station,           // draw_tile_proc
    04430   GetSlopePixelZ_Station,     // get_slope_z_proc
    04431   ClearTile_Station,          // clear_tile_proc
    04432   NULL,                       // add_accepted_cargo_proc
    04433   GetTileDesc_Station,        // get_tile_desc_proc
    04434   GetTileTrackStatus_Station, // get_tile_track_status_proc
    04435   ClickTile_Station,          // click_tile_proc
    04436   AnimateTile_Station,        // animate_tile_proc
    04437   TileLoop_Station,           // tile_loop_proc
    04438   ChangeTileOwner_Station,    // change_tile_owner_proc
    04439   NULL,                       // add_produced_cargo_proc
    04440   VehicleEnter_Station,       // vehicle_enter_tile_proc
    04441   GetFoundation_Station,      // get_foundation_proc
    04442   TerraformTile_Station,      // terraform_tile_proc
    04443 };