# station_cmd.cpp

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    00001 /* $Id: station_cmd.cpp 18866 2010-01-18 22:57:21Z rubidium $ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
    00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
    00008  */
    00009
    00012 #include "stdafx.h"
    00013 #include "aircraft.h"
    00014 #include "bridge_map.h"
    00015 #include "cmd_helper.h"
    00016 #include "landscape.h"
    00017 #include "viewport_func.h"
    00018 #include "command_func.h"
    00019 #include "town.h"
    00020 #include "news_func.h"
    00021 #include "train.h"
    00022 #include "roadveh.h"
    00023 #include "industry.h"
    00024 #include "newgrf_cargo.h"
    00025 #include "newgrf_station.h"
    00026 #include "pathfinder/yapf/yapf_cache.h"
    00027 #include "road_internal.h" /* For drawing catenary/checking road removal */
    00028 #include "variables.h"
    00029 #include "autoslope.h"
    00030 #include "water.h"
    00031 #include "station_gui.h"
    00032 #include "strings_func.h"
    00033 #include "functions.h"
    00034 #include "window_func.h"
    00035 #include "date_func.h"
    00036 #include "vehicle_func.h"
    00037 #include "string_func.h"
    00038 #include "animated_tile_func.h"
    00039 #include "elrail_func.h"
    00040 #include "station_base.h"
    00041 #include "roadstop_base.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 "newgrf.h"
    00049
    00050 #include "table/strings.h"
    00051
    00058 bool IsHangar(TileIndex t)
    00059 {
    00060   assert(IsTileType(t, MP_STATION));
    00061
    00062   /* If the tile isn't an airport there's no chance it's a hangar. */
    00063   if (!IsAirport(t)) return false;
    00064
    00065   const Station *st = Station::GetByTile(t);
    00066   const AirportSpec *as = st->GetAirportSpec();
    00067
    00068   for (uint i = 0; i < as->nof_depots; i++) {
    00069     if (st->GetHangarTile(i) == t) return true;
    00070   }
    00071
    00072   return false;
    00073 }
    00074
    00082 template <class T>
    00083 bool GetStationAround(TileArea ta, StationID closest_station, T **st)
    00084 {
    00085   /* check around to see if there's any stations there */
    00086   TILE_LOOP(tile_cur, ta.w + 2, ta.h + 2, ta.tile - TileDiffXY(1, 1)) {
    00087     if (IsTileType(tile_cur, MP_STATION)) {
    00088       StationID t = GetStationIndex(tile_cur);
    00089
    00090       if (closest_station == INVALID_STATION) {
    00091         if (T::IsValidID(t)) closest_station = t;
    00092       } else if (closest_station != t) {
    00093         _error_message = STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING;
    00094         return false;
    00095       }
    00096     }
    00097   }
    00098   *st = (closest_station == INVALID_STATION) ? NULL : T::Get(closest_station);
    00099   return true;
    00100 }
    00101
    00107 typedef bool (*CMSAMatcher)(TileIndex tile);
    00108
    00115 static int CountMapSquareAround(TileIndex tile, CMSAMatcher cmp)
    00116 {
    00117   int num = 0;
    00118
    00119   for (int dx = -3; dx <= 3; dx++) {
    00120     for (int dy = -3; dy <= 3; dy++) {
    00121       TileIndex t = TileAddWrap(tile, dx, dy);
    00122       if (t != INVALID_TILE && cmp(t)) num++;
    00123     }
    00124   }
    00125
    00126   return num;
    00127 }
    00128
    00134 static bool CMSAMine(TileIndex tile)
    00135 {
    00136   /* No industry */
    00137   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00138
    00139   const Industry *ind = Industry::GetByTile(tile);
    00140
    00141   /* No extractive industry */
    00142   if ((GetIndustrySpec(ind->type)->life_type & INDUSTRYLIFE_EXTRACTIVE) == 0) return false;
    00143
    00144   for (uint i = 0; i < lengthof(ind->produced_cargo); i++) {
    00145     /* The industry extracts something non-liquid, i.e. no oil or plastic, so it is a mine.
    00146      * Also the production of passengers and mail is ignored. */
    00147     if (ind->produced_cargo[i] != CT_INVALID &&
    00148         (CargoSpec::Get(ind->produced_cargo[i])->classes & (CC_LIQUID | CC_PASSENGERS | CC_MAIL)) == 0) {
    00149       return true;
    00150     }
    00151   }
    00152
    00153   return false;
    00154 }
    00155
    00161 static bool CMSAWater(TileIndex tile)
    00162 {
    00163   return IsTileType(tile, MP_WATER) && IsWater(tile);
    00164 }
    00165
    00171 static bool CMSATree(TileIndex tile)
    00172 {
    00173   return IsTileType(tile, MP_TREES);
    00174 }
    00175
    00181 static bool CMSAForest(TileIndex tile)
    00182 {
    00183   /* No industry */
    00184   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00185
    00186   const Industry *ind = Industry::GetByTile(tile);
    00187
    00188   /* No extractive industry */
    00189   if ((GetIndustrySpec(ind->type)->life_type & INDUSTRYLIFE_ORGANIC) == 0) return false;
    00190
    00191   for (uint i = 0; i < lengthof(ind->produced_cargo); i++) {
    00192     /* The industry produces wood. */
    00193     if (ind->produced_cargo[i] != CT_INVALID && CargoSpec::Get(ind->produced_cargo[i])->label == 'WOOD') return true;
    00194   }
    00195
    00196   return false;
    00197 }
    00198
    00199 #define M(x) ((x) - STR_SV_STNAME)
    00200
    00201 enum StationNaming {
    00202   STATIONNAMING_RAIL,
    00203   STATIONNAMING_ROAD,
    00204   STATIONNAMING_AIRPORT,
    00205   STATIONNAMING_OILRIG,
    00206   STATIONNAMING_DOCK,
    00207   STATIONNAMING_HELIPORT,
    00208 };
    00209
    00211 struct StationNameInformation {
    00212   uint32 free_names;
    00213   bool *indtypes;
    00214 };
    00215
    00224 static bool FindNearIndustryName(TileIndex tile, void *user_data)
    00225 {
    00226   /* All already found industry types */
    00227   StationNameInformation *sni = (StationNameInformation*)user_data;
    00228   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00229
    00230   /* If the station name is undefined it means that it doesn't name a station */
    00231   IndustryType indtype = GetIndustryType(tile);
    00232   if (GetIndustrySpec(indtype)->station_name == STR_UNDEFINED) return false;
    00233
    00234   /* In all cases if an industry that provides a name is found two of
    00235    * the standard names will be disabled. */
    00236   sni->free_names &= ~(1 << M(STR_SV_STNAME_OILFIELD) | 1 << M(STR_SV_STNAME_MINES));
    00237   return !sni->indtypes[indtype];
    00238 }
    00239
    00240 static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming name_class)
    00241 {
    00242   static const uint32 _gen_station_name_bits[] = {
    00243     0,                                       // STATIONNAMING_RAIL
    00244     0,                                       // STATIONNAMING_ROAD
    00245     1U << M(STR_SV_STNAME_AIRPORT),          // STATIONNAMING_AIRPORT
    00246     1U << M(STR_SV_STNAME_OILFIELD),         // STATIONNAMING_OILRIG
    00247     1U << M(STR_SV_STNAME_DOCKS),            // STATIONNAMING_DOCK
    00248     1U << M(STR_SV_STNAME_HELIPORT),         // STATIONNAMING_HELIPORT
    00249   };
    00250
    00251   const Town *t = st->town;
    00252   uint32 free_names = UINT32_MAX;
    00253
    00254   bool indtypes[NUM_INDUSTRYTYPES];
    00255   memset(indtypes, 0, sizeof(indtypes));
    00256
    00257   const Station *s;
    00258   FOR_ALL_STATIONS(s) {
    00259     if (s != st && s->town == t) {
    00260       if (s->indtype != IT_INVALID) {
    00261         indtypes[s->indtype] = true;
    00262         continue;
    00263       }
    00264       uint str = M(s->string_id);
    00265       if (str <= 0x20) {
    00266         if (str == M(STR_SV_STNAME_FOREST)) {
    00267           str = M(STR_SV_STNAME_WOODS);
    00268         }
    00269         ClrBit(free_names, str);
    00270       }
    00271     }
    00272   }
    00273
    00274   TileIndex indtile = tile;
    00275   StationNameInformation sni = { free_names, indtypes };
    00276   if (CircularTileSearch(&indtile, 7, FindNearIndustryName, &sni)) {
    00277     /* An industry has been found nearby */
    00278     IndustryType indtype = GetIndustryType(indtile);
    00279     const IndustrySpec *indsp = GetIndustrySpec(indtype);
    00280     /* STR_NULL means it only disables oil rig/mines */
    00281     if (indsp->station_name != STR_NULL) {
    00282       st->indtype = indtype;
    00283       return STR_SV_STNAME_FALLBACK;
    00284     }
    00285   }
    00286
    00287   /* Oil rigs/mines name could be marked not free by looking for a near by industry. */
    00288   free_names = sni.free_names;
    00289
    00290   /* check default names */
    00291   uint32 tmp = free_names & _gen_station_name_bits[name_class];
    00292   if (tmp != 0) return STR_SV_STNAME + FindFirstBit(tmp);
    00293
    00294   /* check mine? */
    00295   if (HasBit(free_names, M(STR_SV_STNAME_MINES))) {
    00296     if (CountMapSquareAround(tile, CMSAMine) >= 2) {
    00297       return STR_SV_STNAME_MINES;
    00298     }
    00299   }
    00300
    00301   /* check close enough to town to get central as name? */
    00302   if (DistanceMax(tile, t->xy) < 8) {
    00303     if (HasBit(free_names, M(STR_SV_STNAME))) return STR_SV_STNAME;
    00304
    00305     if (HasBit(free_names, M(STR_SV_STNAME_CENTRAL))) return STR_SV_STNAME_CENTRAL;
    00306   }
    00307
    00308   /* Check lakeside */
    00309   if (HasBit(free_names, M(STR_SV_STNAME_LAKESIDE)) &&
    00310       DistanceFromEdge(tile) < 20 &&
    00311       CountMapSquareAround(tile, CMSAWater) >= 5) {
    00312     return STR_SV_STNAME_LAKESIDE;
    00313   }
    00314
    00315   /* Check woods */
    00316   if (HasBit(free_names, M(STR_SV_STNAME_WOODS)) && (
    00317         CountMapSquareAround(tile, CMSATree) >= 8 ||
    00318         CountMapSquareAround(tile, CMSAForest) >= 2)
    00319       ) {
    00320     return _settings_game.game_creation.landscape == LT_TROPIC ? STR_SV_STNAME_FOREST : STR_SV_STNAME_WOODS;
    00321   }
    00322
    00323   /* check elevation compared to town */
    00324   uint z = GetTileZ(tile);
    00325   uint z2 = GetTileZ(t->xy);
    00326   if (z < z2) {
    00327     if (HasBit(free_names, M(STR_SV_STNAME_VALLEY))) return STR_SV_STNAME_VALLEY;
    00328   } else if (z > z2) {
    00329     if (HasBit(free_names, M(STR_SV_STNAME_HEIGHTS))) return STR_SV_STNAME_HEIGHTS;
    00330   }
    00331
    00332   /* check direction compared to town */
    00333   static const int8 _direction_and_table[] = {
    00334     ~( (1 << M(STR_SV_STNAME_WEST))  | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00335     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00336     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00337     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_EAST)) ),
    00338   };
    00339
    00340   free_names &= _direction_and_table[
    00341     (TileX(tile) < TileX(t->xy)) +
    00342     (TileY(tile) < TileY(t->xy)) * 2];
    00343
    00344   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));
    00345   return (tmp == 0) ? STR_SV_STNAME_FALLBACK : (STR_SV_STNAME + FindFirstBit(tmp));
    00346 }
    00347 #undef M
    00348
    00354 static Station *GetClosestDeletedStation(TileIndex tile)
    00355 {
    00356   uint threshold = 8;
    00357   Station *best_station = NULL;
    00358   Station *st;
    00359
    00360   FOR_ALL_STATIONS(st) {
    00361     if (!st->IsInUse() && st->owner == _current_company) {
    00362       uint cur_dist = DistanceManhattan(tile, st->xy);
    00363
    00364       if (cur_dist < threshold) {
    00365         threshold = cur_dist;
    00366         best_station = st;
    00367       }
    00368     }
    00369   }
    00370
    00371   return best_station;
    00372 }
    00373
    00374
    00375 void Station::GetTileArea(TileArea *ta, StationType type) const
    00376 {
    00377   switch (type) {
    00378     case STATION_RAIL:
    00379       *ta = this->train_station;
    00380       return;
    00381
    00382     case STATION_AIRPORT:
    00383       ta->tile = this->airport_tile;
    00384       ta->w    = this->GetAirportSpec()->size_x;
    00385       ta->h    = this->GetAirportSpec()->size_y;
    00386       return;
    00387
    00388     case STATION_TRUCK:
    00389       *ta = this->truck_station;
    00390       return;
    00391
    00392     case STATION_BUS:
    00393       *ta = this->bus_station;
    00394       return;
    00395
    00396     case STATION_DOCK:
    00397     case STATION_OILRIG:
    00398       ta->tile = this->dock_tile;
    00399       break;
    00400
    00401     default: NOT_REACHED();
    00402   }
    00403
    00404   ta->w = 1;
    00405   ta->h = 1;
    00406 }
    00407
    00411 void Station::UpdateVirtCoord()
    00412 {
    00413   Point pt = RemapCoords2(TileX(this->xy) * TILE_SIZE, TileY(this->xy) * TILE_SIZE);
    00414
    00415   pt.y -= 32;
    00416   if ((this->facilities & FACIL_AIRPORT) && this->airport_type == AT_OILRIG) pt.y -= 16;
    00417
    00418   SetDParam(0, this->index);
    00419   SetDParam(1, this->facilities);
    00420   this->sign.UpdatePosition(pt.x, pt.y, STR_VIEWPORT_STATION);
    00421
    00422   SetWindowDirty(WC_STATION_VIEW, this->index);
    00423 }
    00424
    00426 void UpdateAllStationVirtCoords()
    00427 {
    00428   BaseStation *st;
    00429
    00430   FOR_ALL_BASE_STATIONS(st) {
    00431     st->UpdateVirtCoord();
    00432   }
    00433 }
    00434
    00439 static uint GetAcceptanceMask(const Station *st)
    00440 {
    00441   uint mask = 0;
    00442
    00443   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00444     if (HasBit(st->goods[i].acceptance_pickup, GoodsEntry::ACCEPTANCE)) mask |= 1 << i;
    00445   }
    00446   return mask;
    00447 }
    00448
    00452 static void ShowRejectOrAcceptNews(const Station *st, uint num_items, CargoID *cargo, StringID msg)
    00453 {
    00454   for (uint i = 0; i < num_items; i++) {
    00455     SetDParam(i + 1, CargoSpec::Get(cargo[i])->name);
    00456   }
    00457
    00458   SetDParam(0, st->index);
    00459   AddNewsItem(msg, NS_ACCEPTANCE, NR_STATION, st->index);
    00460 }
    00461
    00469 CargoArray GetProductionAroundTiles(TileIndex tile, int w, int h, int rad)
    00470 {
    00471   CargoArray produced;
    00472
    00473   int x = TileX(tile);
    00474   int y = TileY(tile);
    00475
    00476   /* expand the region by rad tiles on each side
    00477    * while making sure that we remain inside the board. */
    00478   int x2 = min(x + w + rad, MapSizeX());
    00479   int x1 = max(x - rad, 0);
    00480
    00481   int y2 = min(y + h + rad, MapSizeY());
    00482   int y1 = max(y - rad, 0);
    00483
    00484   assert(x1 < x2);
    00485   assert(y1 < y2);
    00486   assert(w > 0);
    00487   assert(h > 0);
    00488
    00489   TileArea ta(TileXY(x1, y1), TileXY(x2 - 1, y2 - 1));
    00490
    00491   /* Loop over all tiles to get the produced cargo of
    00492    * everything except industries */
    00493   TILE_AREA_LOOP(tile, ta) AddProducedCargo(tile, produced);
    00494
    00495   /* Loop over the industries. They produce cargo for
    00496    * anything that is within 'rad' from their bounding
    00497    * box. As such if you have e.g. a oil well the tile
    00498    * area loop might not hit an industry tile while
    00499    * the industry would produce cargo for the station.
    00500    */
    00501   const Industry *i;
    00502   FOR_ALL_INDUSTRIES(i) {
    00503     if (!ta.Intersects(i->location)) continue;
    00504
    00505     for (uint j = 0; j < lengthof(i->produced_cargo); j++) {
    00506       CargoID cargo = i->produced_cargo[j];
    00507       if (cargo != CT_INVALID) produced[cargo]++;
    00508     }
    00509   }
    00510
    00511   return produced;
    00512 }
    00513
    00522 CargoArray GetAcceptanceAroundTiles(TileIndex tile, int w, int h, int rad, uint32 *always_accepted)
    00523 {
    00524   CargoArray acceptance;
    00525   if (always_accepted != NULL) *always_accepted = 0;
    00526
    00527   int x = TileX(tile);
    00528   int y = TileY(tile);
    00529
    00530   /* expand the region by rad tiles on each side
    00531    * while making sure that we remain inside the board. */
    00532   int x2 = min(x + w + rad, MapSizeX());
    00533   int y2 = min(y + h + rad, MapSizeY());
    00534   int x1 = max(x - rad, 0);
    00535   int y1 = max(y - rad, 0);
    00536
    00537   assert(x1 < x2);
    00538   assert(y1 < y2);
    00539   assert(w > 0);
    00540   assert(h > 0);
    00541
    00542   for (int yc = y1; yc != y2; yc++) {
    00543     for (int xc = x1; xc != x2; xc++) {
    00544       TileIndex tile = TileXY(xc, yc);
    00545       AddAcceptedCargo(tile, acceptance, always_accepted);
    00546     }
    00547   }
    00548
    00549   return acceptance;
    00550 }
    00551
    00556 void UpdateStationAcceptance(Station *st, bool show_msg)
    00557 {
    00558   /* old accepted goods types */
    00559   uint old_acc = GetAcceptanceMask(st);
    00560
    00561   /* And retrieve the acceptance. */
    00562   CargoArray acceptance;
    00563   if (!st->rect.IsEmpty()) {
    00564     acceptance = GetAcceptanceAroundTiles(
    00565       TileXY(st->rect.left, st->rect.top),
    00566       st->rect.right  - st->rect.left + 1,
    00567       st->rect.bottom - st->rect.top  + 1,
    00568       st->GetCatchmentRadius(),
    00569       &st->always_accepted
    00570     );
    00571   }
    00572
    00573   /* Adjust in case our station only accepts fewer kinds of goods */
    00574   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00575     uint amt = min(acceptance[i], 15);
    00576
    00577     /* Make sure the station can accept the goods type. */
    00578     bool is_passengers = IsCargoInClass(i, CC_PASSENGERS);
    00579     if ((!is_passengers && !(st->facilities & ~FACIL_BUS_STOP)) ||
    00580         (is_passengers && !(st->facilities & ~FACIL_TRUCK_STOP))) {
    00581       amt = 0;
    00582     }
    00583
    00584     SB(st->goods[i].acceptance_pickup, GoodsEntry::ACCEPTANCE, 1, amt >= 8);
    00585   }
    00586
    00587   /* Only show a message in case the acceptance was actually changed. */
    00588   uint new_acc = GetAcceptanceMask(st);
    00589   if (old_acc == new_acc) return;
    00590
    00591   /* show a message to report that the acceptance was changed? */
    00592   if (show_msg && st->owner == _local_company && st->IsInUse()) {
    00593     /* List of accept and reject strings for different number of
    00594      * cargo types */
    00595     static const StringID accept_msg[] = {
    00596       STR_NEWS_STATION_NOW_ACCEPTS_CARGO,
    00597       STR_NEWS_STATION_NOW_ACCEPTS_CARGO_AND_CARGO,
    00598     };
    00599     static const StringID reject_msg[] = {
    00600       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO,
    00601       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO_OR_CARGO,
    00602     };
    00603
    00604     /* Array of accepted and rejected cargo types */
    00605     CargoID accepts[2] = { CT_INVALID, CT_INVALID };
    00606     CargoID rejects[2] = { CT_INVALID, CT_INVALID };
    00607     uint num_acc = 0;
    00608     uint num_rej = 0;
    00609
    00610     /* Test each cargo type to see if its acceptange has changed */
    00611     for (CargoID i = 0; i < NUM_CARGO; i++) {
    00612       if (HasBit(new_acc, i)) {
    00613         if (!HasBit(old_acc, i) && num_acc < lengthof(accepts)) {
    00614           /* New cargo is accepted */
    00615           accepts[num_acc++] = i;
    00616         }
    00617       } else {
    00618         if (HasBit(old_acc, i) && num_rej < lengthof(rejects)) {
    00619           /* Old cargo is no longer accepted */
    00620           rejects[num_rej++] = i;
    00621         }
    00622       }
    00623     }
    00624
    00625     /* Show news message if there are any changes */
    00626     if (num_acc > 0) ShowRejectOrAcceptNews(st, num_acc, accepts, accept_msg[num_acc - 1]);
    00627     if (num_rej > 0) ShowRejectOrAcceptNews(st, num_rej, rejects, reject_msg[num_rej - 1]);
    00628   }
    00629
    00630   /* redraw the station view since acceptance changed */
    00631   SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_ACCEPTLIST);
    00632 }
    00633
    00634 static void UpdateStationSignCoord(BaseStation *st)
    00635 {
    00636   const StationRect *r = &st->rect;
    00637
    00638   if (r->IsEmpty()) return; // no tiles belong to this station
    00639
    00640   /* clamp sign coord to be inside the station rect */
    00641   st->xy = TileXY(ClampU(TileX(st->xy), r->left, r->right), ClampU(TileY(st->xy), r->top, r->bottom));
    00642   st->UpdateVirtCoord();
    00643 }
    00644
    00650 static void DeleteStationIfEmpty(BaseStation *st)
    00651 {
    00652   if (!st->IsInUse()) {
    00653     st->delete_ctr = 0;
    00654     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    00655   }
    00656   /* station remains but it probably lost some parts - station sign should stay in the station boundaries */
    00657   UpdateStationSignCoord(st);
    00658 }
    00659
    00660 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags);
    00661
    00673 CommandCost CheckFlatLandBelow(TileIndex tile, uint w, uint h, DoCommandFlag flags, uint invalid_dirs, StationID *station, bool check_clear = true, RailType rt = INVALID_RAILTYPE)
    00674 {
    00675   CommandCost cost(EXPENSES_CONSTRUCTION);
    00676   int allowed_z = -1;
    00677
    00678   TILE_LOOP(tile_cur, w, h, tile) {
    00679     if (MayHaveBridgeAbove(tile_cur) && IsBridgeAbove(tile_cur)) {
    00680       return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    00681     }
    00682
    00683     if (!EnsureNoVehicleOnGround(tile_cur)) return CMD_ERROR;
    00684
    00685     uint z;
    00686     Slope tileh = GetTileSlope(tile_cur, &z);
    00687
    00688     /* Prohibit building if
    00689      *   1) The tile is "steep" (i.e. stretches two height levels)
    00690      *   2) The tile is non-flat and the build_on_slopes switch is disabled
    00691      */
    00692     if (IsSteepSlope(tileh) ||
    00693         ((!_settings_game.construction.build_on_slopes) && tileh != SLOPE_FLAT)) {
    00694       return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00695     }
    00696
    00697     int flat_z = z;
    00698     if (tileh != SLOPE_FLAT) {
    00699       /* need to check so the entrance to the station is not pointing at a slope.
    00700        * This must be valid for all station tiles, as the user can remove single station tiles. */
    00701       if ((HasBit(invalid_dirs, DIAGDIR_NE) && !(tileh & SLOPE_NE)) ||
    00702           (HasBit(invalid_dirs, DIAGDIR_SE) && !(tileh & SLOPE_SE)) ||
    00703           (HasBit(invalid_dirs, DIAGDIR_SW) && !(tileh & SLOPE_SW)) ||
    00704           (HasBit(invalid_dirs, DIAGDIR_NW) && !(tileh & SLOPE_NW))) {
    00705         return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00706       }
    00707       cost.AddCost(_price[PR_BUILD_FOUNDATION]);
    00708       flat_z += TILE_HEIGHT;
    00709     }
    00710
    00711     /* get corresponding flat level and make sure that all parts of the station have the same level. */
    00712     if (allowed_z == -1) {
    00713       /* first tile */
    00714       allowed_z = flat_z;
    00715     } else if (allowed_z != flat_z) {
    00716       return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00717     }
    00718
    00719     /* if station is set, then we have special handling to allow building on top of already existing stations.
    00720      * so station points to INVALID_STATION if we can build on any station.
    00721      * Or it points to a station if we're only allowed to build on exactly that station. */
    00722     if (station != NULL && IsTileType(tile_cur, MP_STATION)) {
    00723       if (!IsRailStation(tile_cur)) {
    00724         return ClearTile_Station(tile_cur, DC_AUTO); // get error message
    00725       } else {
    00726         StationID st = GetStationIndex(tile_cur);
    00727         if (*station == INVALID_STATION) {
    00728           *station = st;
    00729         } else if (*station != st) {
    00730           return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00731         }
    00732       }
    00733     } else if (check_clear) {
    00734       /* Rail type is only valid when building a railway station; in station to
    00735        * build isn't a rail station it's INVALID_RAILTYPE. */
    00736       if (rt != INVALID_RAILTYPE &&
    00737           IsPlainRailTile(tile_cur) && !HasSignals(tile_cur) &&
    00738           HasPowerOnRail(GetRailType(tile_cur), rt)) {
    00739         /* Allow overbuilding if the tile:
    00740          *  - has rail, but no signals
    00741          *  - it has exactly one track
    00742          *  - the track is in line with the station
    00743          *  - the current rail type has power on the to-be-built type (e.g. convert normal rail to el rail)
    00744          */
    00745         TrackBits tracks = GetTrackBits(tile_cur);
    00746         Track track = RemoveFirstTrack(&tracks);
    00747         Track expected_track = HasBit(invalid_dirs, DIAGDIR_NE) ? TRACK_X : TRACK_Y;
    00748
    00749         if (tracks == TRACK_BIT_NONE && track == expected_track) {
    00750           CommandCost ret = DoCommand(tile_cur, 0, track, flags, CMD_REMOVE_SINGLE_RAIL);
    00751           if (ret.Failed()) return ret;
    00752           cost.AddCost(ret);
    00753           /* With flags & ~DC_EXEC CmdLandscapeClear would fail since the rail still exists */
    00754           continue;
    00755         }
    00756       }
    00757       CommandCost ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00758       if (ret.Failed()) return ret;
    00759       cost.AddCost(ret);
    00760     }
    00761   }
    00762
    00763   return cost;
    00764 }
    00765
    00773 bool CanExpandRailStation(const BaseStation *st, TileArea &new_ta, Axis axis)
    00774 {
    00775   TileArea cur_ta = st->train_station;
    00776
    00777   if (_settings_game.station.nonuniform_stations) {
    00778     /* determine new size of train station region.. */
    00779     int x = min(TileX(cur_ta.tile), TileX(new_ta.tile));
    00780     int y = min(TileY(cur_ta.tile), TileY(new_ta.tile));
    00781     new_ta.w = max(TileX(cur_ta.tile) + cur_ta.w, TileX(new_ta.tile) + new_ta.w) - x;
    00782     new_ta.h = max(TileY(cur_ta.tile) + cur_ta.h, TileY(new_ta.tile) + new_ta.h) - y;
    00783     new_ta.tile = TileXY(x, y);
    00784   } else {
    00785     /* do not allow modifying non-uniform stations,
    00786      * the uniform-stations code wouldn't handle it well */
    00787     TILE_LOOP(t, cur_ta.w, cur_ta.h, cur_ta.tile) {
    00788       if (!st->TileBelongsToRailStation(t)) { // there may be adjoined station
    00789         _error_message = STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED;
    00790         return false;
    00791       }
    00792     }
    00793
    00794     /* check so the orientation is the same */
    00795     if (GetRailStationAxis(cur_ta.tile) != axis) {
    00796       _error_message = STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED;
    00797       return false;
    00798     }
    00799
    00800     /* check if the new station adjoins the old station in either direction */
    00801     if (cur_ta.w == new_ta.w && cur_ta.tile == new_ta.tile + TileDiffXY(0, new_ta.h)) {
    00802       /* above */
    00803       new_ta.h += cur_ta.h;
    00804     } else if (cur_ta.w == new_ta.w && cur_ta.tile == new_ta.tile - TileDiffXY(0, cur_ta.h)) {
    00805       /* below */
    00806       new_ta.tile = cur_ta.tile;
    00807       new_ta.h += new_ta.h;
    00808     } else if (cur_ta.h == new_ta.h && cur_ta.tile == new_ta.tile + TileDiffXY(new_ta.w, 0)) {
    00809       /* to the left */
    00810       new_ta.w += cur_ta.w;
    00811     } else if (cur_ta.h == new_ta.h && cur_ta.tile == new_ta.tile - TileDiffXY(cur_ta.w, 0)) {
    00812       /* to the right */
    00813       new_ta.tile = cur_ta.tile;
    00814       new_ta.w += cur_ta.w;
    00815     } else {
    00816       _error_message = STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED;
    00817       return false;
    00818     }
    00819   }
    00820   /* make sure the final size is not too big. */
    00821   if (new_ta.w > _settings_game.station.station_spread || new_ta.h > _settings_game.station.station_spread) {
    00822     _error_message = STR_ERROR_STATION_TOO_SPREAD_OUT;
    00823     return false;
    00824   }
    00825
    00826   return true;
    00827 }
    00828
    00829 static inline byte *CreateSingle(byte *layout, int n)
    00830 {
    00831   int i = n;
    00832   do *layout++ = 0; while (--i);
    00833   layout[((n - 1) >> 1) - n] = 2;
    00834   return layout;
    00835 }
    00836
    00837 static inline byte *CreateMulti(byte *layout, int n, byte b)
    00838 {
    00839   int i = n;
    00840   do *layout++ = b; while (--i);
    00841   if (n > 4) {
    00842     layout[0 - n] = 0;
    00843     layout[n - 1 - n] = 0;
    00844   }
    00845   return layout;
    00846 }
    00847
    00848 void GetStationLayout(byte *layout, int numtracks, int plat_len, const StationSpec *statspec)
    00849 {
    00850   if (statspec != NULL && statspec->lengths >= plat_len &&
    00851       statspec->platforms[plat_len - 1] >= numtracks &&
    00852       statspec->layouts[plat_len - 1][numtracks - 1]) {
    00853     /* Custom layout defined, follow it. */
    00854     memcpy(layout, statspec->layouts[plat_len - 1][numtracks - 1],
    00855       plat_len * numtracks);
    00856     return;
    00857   }
    00858
    00859   if (plat_len == 1) {
    00860     CreateSingle(layout, numtracks);
    00861   } else {
    00862     if (numtracks & 1) layout = CreateSingle(layout, plat_len);
    00863     numtracks >>= 1;
    00864
    00865     while (--numtracks >= 0) {
    00866       layout = CreateMulti(layout, plat_len, 4);
    00867       layout = CreateMulti(layout, plat_len, 6);
    00868     }
    00869   }
    00870 }
    00871
    00883 template <class T, StringID error_message>
    00884 CommandCost FindJoiningBaseStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, T **st)
    00885 {
    00886   assert(*st == NULL);
    00887   bool check_surrounding = true;
    00888
    00889   if (_settings_game.station.adjacent_stations) {
    00890     if (existing_station != INVALID_STATION) {
    00891       if (adjacent && existing_station != station_to_join) {
    00892         /* You can't build an adjacent station over the top of one that
    00893          * already exists. */
    00894         return_cmd_error(error_message);
    00895       } else {
    00896         /* Extend the current station, and don't check whether it will
    00897          * be near any other stations. */
    00898         *st = T::GetIfValid(existing_station);
    00899         check_surrounding = (*st == NULL);
    00900       }
    00901     } else {
    00902       /* There's no station here. Don't check the tiles surrounding this
    00903        * one if the company wanted to build an adjacent station. */
    00904       if (adjacent) check_surrounding = false;
    00905     }
    00906   }
    00907
    00908   if (check_surrounding) {
    00909     /* Make sure there are no similar stations around us. */
    00910     if (!GetStationAround(ta, existing_station, st)) return CMD_ERROR;
    00911   }
    00912
    00913   /* Distant join */
    00914   if (*st == NULL && station_to_join != INVALID_STATION) *st = T::GetIfValid(station_to_join);
    00915
    00916   return CommandCost();;
    00917 }
    00918
    00928 static CommandCost FindJoiningStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
    00929 {
    00930   return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_RAILWAY_STATION_FIRST>(existing_station, station_to_join, adjacent, ta, st);
    00931 }
    00932
    00942 CommandCost FindJoiningWaypoint(StationID existing_waypoint, StationID waypoint_to_join, bool adjacent, TileArea ta, Waypoint **wp)
    00943 {
    00944   return FindJoiningBaseStation<Waypoint, STR_ERROR_MUST_REMOVE_RAILWAYPOINT_FIRST>(existing_waypoint, waypoint_to_join, adjacent, ta, wp);
    00945 }
    00946
    00964 CommandCost CmdBuildRailStation(TileIndex tile_org, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    00965 {
    00966   /* Unpack parameters */
    00967   RailType rt    = (RailType)GB(p1, 0, 4);
    00968   Axis axis      = Extract<Axis, 4>(p1);
    00969   byte numtracks = GB(p1,  8, 8);
    00970   byte plat_len  = GB(p1, 16, 8);
    00971   bool adjacent  = HasBit(p1, 24);
    00972
    00973   StationClassID spec_class = (StationClassID)GB(p2, 0, 8);
    00974   byte spec_index           = GB(p2, 8, 8);
    00975   StationID station_to_join = GB(p2, 16, 16);
    00976
    00977   /* Does the authority allow this? */
    00978   if (!CheckIfAuthorityAllowsNewStation(tile_org, flags)) return CMD_ERROR;
    00979   if (!ValParamRailtype(rt)) return CMD_ERROR;
    00980
    00981   /* Check if the given station class is valid */
    00982   if ((uint)spec_class >= GetNumStationClasses()) return CMD_ERROR;
    00983   if (spec_index >= GetNumCustomStations(spec_class)) return CMD_ERROR;
    00984   if (plat_len == 0 || numtracks == 0) return CMD_ERROR;
    00985
    00986   int w_org, h_org;
    00987   if (axis == AXIS_X) {
    00988     w_org = plat_len;
    00989     h_org = numtracks;
    00990   } else {
    00991     h_org = plat_len;
    00992     w_org = numtracks;
    00993   }
    00994
    00995   bool reuse = (station_to_join != NEW_STATION);
    00996   if (!reuse) station_to_join = INVALID_STATION;
    00997   bool distant_join = (station_to_join != INVALID_STATION);
    00998
    00999   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01000
    01001   if (h_org > _settings_game.station.station_spread || w_org > _settings_game.station.station_spread) return CMD_ERROR;
    01002
    01003   /* these values are those that will be stored in train_tile and station_platforms */
    01004   TileArea new_location(tile_org, w_org, h_org);
    01005
    01006   /* Make sure the area below consists of clear tiles. (OR tiles belonging to a certain rail station) */
    01007   StationID est = INVALID_STATION;
    01008   /* If DC_EXEC is in flag, do not want to pass it to CheckFlatLandBelow, because of a nice bug
    01009    * for detail info, see:
    01010    * https://sourceforge.net/tracker/index.php?func=detail&aid=1029064&group_id=103924&atid=636365 */
    01011   CommandCost ret = CheckFlatLandBelow(tile_org, w_org, h_org, flags & ~DC_EXEC, 5 << axis, _settings_game.station.nonuniform_stations ? &est : NULL, true, rt);
    01012   if (ret.Failed()) return ret;
    01013   CommandCost cost(EXPENSES_CONSTRUCTION, ret.GetCost() + (numtracks * _price[PR_BUILD_STATION_RAIL] + _price[PR_BUILD_STATION_RAIL_LENGTH]) * plat_len);
    01014
    01015   Station *st = NULL;
    01016   ret = FindJoiningStation(est, station_to_join, adjacent, new_location, &st);
    01017   if (ret.Failed()) return ret;
    01018
    01019   /* See if there is a deleted station close to us. */
    01020   if (st == NULL && reuse) st = GetClosestDeletedStation(tile_org);
    01021
    01022   if (st != NULL) {
    01023     /* Reuse an existing station. */
    01024     if (st->owner != _current_company)
    01025       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01026
    01027     if (st->train_station.tile != INVALID_TILE) {
    01028       /* check if we want to expanding an already existing station? */
    01029       if (!_settings_game.station.join_stations)
    01030         return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_RAILROAD);
    01031       if (!CanExpandRailStation(st, new_location, axis))
    01032         return CMD_ERROR;
    01033     }
    01034
    01035     /* XXX can't we pack this in the "else" part of the if above? */
    01036     if (!st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TEST)) return CMD_ERROR;
    01037   } else {
    01038     /* allocate and initialize new station */
    01039     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01040
    01041     if (flags & DC_EXEC) {
    01042       st = new Station(tile_org);
    01043
    01044       st->town = ClosestTownFromTile(tile_org, UINT_MAX);
    01045       st->string_id = GenerateStationName(st, tile_org, STATIONNAMING_RAIL);
    01046
    01047       if (Company::IsValidID(_current_company)) {
    01048         SetBit(st->town->have_ratings, _current_company);
    01049       }
    01050     }
    01051   }
    01052
    01053   /* Check if we can allocate a custom stationspec to this station */
    01054   const StationSpec *statspec = GetCustomStationSpec(spec_class, spec_index);
    01055   int specindex = AllocateSpecToStation(statspec, st, (flags & DC_EXEC) != 0);
    01056   if (specindex == -1) return_cmd_error(STR_ERROR_TOO_MANY_STATION_SPECS);
    01057
    01058   if (statspec != NULL) {
    01059     /* Perform NewStation checks */
    01060
    01061     /* Check if the station size is permitted */
    01062     if (HasBit(statspec->disallowed_platforms, numtracks - 1) || HasBit(statspec->disallowed_lengths, plat_len - 1)) {
    01063       return CMD_ERROR;
    01064     }
    01065
    01066     /* Check if the station is buildable */
    01067     if (HasBit(statspec->callback_mask, CBM_STATION_AVAIL) && GB(GetStationCallback(CBID_STATION_AVAILABILITY, 0, 0, statspec, NULL, INVALID_TILE), 0, 8) == 0) {
    01068       return CMD_ERROR;
    01069     }
    01070   }
    01071
    01072   if (flags & DC_EXEC) {
    01073     TileIndexDiff tile_delta;
    01074     byte *layout_ptr;
    01075     byte numtracks_orig;
    01076     Track track;
    01077
    01078     /* Now really clear the land below the station
    01079      * It should never return CMD_ERROR.. but you never know ;)
    01080      * (a bit strange function name for it, but it really does clear the land, when DC_EXEC is in flags) */
    01081     ret = CheckFlatLandBelow(tile_org, w_org, h_org, flags, 5 << axis, _settings_game.station.nonuniform_stations ? &est : NULL, true, rt);
    01082     if (ret.Failed()) return ret;
    01083
    01084     st->train_station = new_location;
    01085     st->AddFacility(FACIL_TRAIN, new_location.tile);
    01086
    01087     st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TRY);
    01088
    01089     if (statspec != NULL) {
    01090       /* Include this station spec's animation trigger bitmask
    01091        * in the station's cached copy. */
    01092       st->cached_anim_triggers |= statspec->anim_triggers;
    01093     }
    01094
    01095     tile_delta = (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
    01096     track = AxisToTrack(axis);
    01097
    01098     layout_ptr = AllocaM(byte, numtracks * plat_len);
    01099     GetStationLayout(layout_ptr, numtracks, plat_len, statspec);
    01100
    01101     numtracks_orig = numtracks;
    01102
    01103     SmallVector<Train*, 4> affected_vehicles;
    01104     do {
    01105       TileIndex tile = tile_org;
    01106       int w = plat_len;
    01107       do {
    01108         byte layout = *layout_ptr++;
    01109         if (IsRailStationTile(tile) && HasStationReservation(tile)) {
    01110           /* Check for trains having a reservation for this tile. */
    01111           Train *v = GetTrainForReservation(tile, AxisToTrack(GetRailStationAxis(tile)));
    01112           if (v != NULL) {
    01113             FreeTrainTrackReservation(v);
    01114             *affected_vehicles.Append() = v;
    01115             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01116             for (; v->Next() != NULL; v = v->Next()) { }
    01117             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), false);
    01118           }
    01119         }
    01120
    01121         /* Remove animation if overbuilding */
    01122         DeleteAnimatedTile(tile);
    01123         byte old_specindex = IsTileType(tile, MP_STATION) ? GetCustomStationSpecIndex(tile) : 0;
    01124         MakeRailStation(tile, st->owner, st->index, axis, layout & ~1, rt);
    01125         /* Free the spec if we overbuild something */
    01126         DeallocateSpecFromStation(st, old_specindex);
    01127
    01128         SetCustomStationSpecIndex(tile, specindex);
    01129         SetStationTileRandomBits(tile, GB(Random(), 0, 4));
    01130         SetStationAnimationFrame(tile, 0);
    01131
    01132         if (statspec != NULL) {
    01133           /* Use a fixed axis for GetPlatformInfo as our platforms / numtracks are always the right way around */
    01134           uint32 platinfo = GetPlatformInfo(AXIS_X, 0, plat_len, numtracks_orig, plat_len - w, numtracks_orig - numtracks, false);
    01135
    01136           /* As the station is not yet completely finished, the station does not yet exist. */
    01137           uint16 callback = GetStationCallback(CBID_STATION_TILE_LAYOUT, platinfo, 0, statspec, NULL, tile);
    01138           if (callback != CALLBACK_FAILED && callback < 8) SetStationGfx(tile, (callback & ~1) + axis);
    01139
    01140           /* Trigger station animation -- after building? */
    01141           StationAnimationTrigger(st, tile, STAT_ANIM_BUILT);
    01142         }
    01143
    01144         tile += tile_delta;
    01145       } while (--w);
    01146       AddTrackToSignalBuffer(tile_org, track, _current_company);
    01147       YapfNotifyTrackLayoutChange(tile_org, track);
    01148       tile_org += tile_delta ^ TileDiffXY(1, 1); // perpendicular to tile_delta
    01149     } while (--numtracks);
    01150
    01151     for (uint i = 0; i < affected_vehicles.Length(); ++i) {
    01152       /* Restore reservations of trains. */
    01153       Train *v = affected_vehicles[i];
    01154       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01155       TryPathReserve(v, true, true);
    01156       for (; v->Next() != NULL; v = v->Next()) { }
    01157       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01158     }
    01159
    01160     st->MarkTilesDirty(false);
    01161     st->UpdateVirtCoord();
    01162     UpdateStationAcceptance(st, false);
    01163     st->RecomputeIndustriesNear();
    01164     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01165     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01166     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01167   }
    01168
    01169   return cost;
    01170 }
    01171
    01172 static void MakeRailStationAreaSmaller(BaseStation *st)
    01173 {
    01174   TileArea ta = st->train_station;
    01175
    01176 restart:
    01177
    01178   /* too small? */
    01179   if (ta.w != 0 && ta.h != 0) {
    01180     /* check the left side, x = constant, y changes */
    01181     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(0, i));) {
    01182       /* the left side is unused? */
    01183       if (++i == ta.h) {
    01184         ta.tile += TileDiffXY(1, 0);
    01185         ta.w--;
    01186         goto restart;
    01187       }
    01188     }
    01189
    01190     /* check the right side, x = constant, y changes */
    01191     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(ta.w - 1, i));) {
    01192       /* the right side is unused? */
    01193       if (++i == ta.h) {
    01194         ta.w--;
    01195         goto restart;
    01196       }
    01197     }
    01198
    01199     /* check the upper side, y = constant, x changes */
    01200     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, 0));) {
    01201       /* the left side is unused? */
    01202       if (++i == ta.w) {
    01203         ta.tile += TileDiffXY(0, 1);
    01204         ta.h--;
    01205         goto restart;
    01206       }
    01207     }
    01208
    01209     /* check the lower side, y = constant, x changes */
    01210     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, ta.h - 1));) {
    01211       /* the left side is unused? */
    01212       if (++i == ta.w) {
    01213         ta.h--;
    01214         goto restart;
    01215       }
    01216     }
    01217   } else {
    01218     ta.Clear();
    01219   }
    01220
    01221   st->train_station = ta;
    01222 }
    01223
    01234 template <class T>
    01235 CommandCost RemoveFromRailBaseStation(TileArea ta, SmallVector<T *, 4> &affected_stations, DoCommandFlag flags, Money removal_cost, bool keep_rail)
    01236 {
    01237   /* Count of the number of tiles removed */
    01238   int quantity = 0;
    01239   CommandCost total_cost(EXPENSES_CONSTRUCTION);
    01240
    01241   /* Do the action for every tile into the area */
    01242   TILE_AREA_LOOP(tile, ta) {
    01243     /* Make sure the specified tile is a rail station */
    01244     if (!HasStationTileRail(tile)) continue;
    01245
    01246     /* If there is a vehicle on ground, do not allow to remove (flood) the tile */
    01247     if (!EnsureNoVehicleOnGround(tile)) continue;
    01248
    01249     /* Check ownership of station */
    01250     T *st = T::GetByTile(tile);
    01251     if (st == NULL) continue;
    01252     if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) continue;
    01253
    01254     /* Do not allow removing from stations if non-uniform stations are not enabled
    01255      * The check must be here to give correct error message
    01256      */
    01257     if (!_settings_game.station.nonuniform_stations) return_cmd_error(STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED);
    01258
    01259     /* If we reached here, the tile is valid so increase the quantity of tiles we will remove */
    01260     quantity++;
    01261
    01262     if (flags & DC_EXEC) {
    01263       /* read variables before the station tile is removed */
    01264       uint specindex = GetCustomStationSpecIndex(tile);
    01265       Track track = GetRailStationTrack(tile);
    01266       Owner owner = GetTileOwner(tile);
    01267       RailType rt = GetRailType(tile);
    01268       Train *v = NULL;
    01269
    01270       if (HasStationReservation(tile)) {
    01271         v = GetTrainForReservation(tile, track);
    01272         if (v != NULL) {
    01273           /* Free train reservation. */
    01274           FreeTrainTrackReservation(v);
    01275           if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01276           Vehicle *temp = v;
    01277           for (; temp->Next() != NULL; temp = temp->Next()) { }
    01278           if (IsRailStationTile(temp->tile)) SetRailStationPlatformReservation(temp->tile, TrackdirToExitdir(ReverseTrackdir(temp->GetVehicleTrackdir())), false);
    01279         }
    01280       }
    01281
    01282       DoClearSquare(tile);
    01283       if (keep_rail) MakeRailNormal(tile, owner, TrackToTrackBits(track), rt);
    01284
    01285       st->rect.AfterRemoveTile(st, tile);
    01286       AddTrackToSignalBuffer(tile, track, owner);
    01287       YapfNotifyTrackLayoutChange(tile, track);
    01288
    01289       DeallocateSpecFromStation(st, specindex);
    01290
    01291       affected_stations.Include(st);
    01292
    01293       if (v != NULL) {
    01294         /* Restore station reservation. */
    01295         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01296         TryPathReserve(v, true, true);
    01297         for (; v->Next() != NULL; v = v->Next()) { }
    01298         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01299       }
    01300     }
    01301     if (keep_rail) {
    01302       /* Don't refund the 'steel' of the track! */
    01303       total_cost.AddCost(-_price[PR_CLEAR_RAIL]);
    01304     }
    01305   }
    01306
    01307   if (quantity == 0) return CMD_ERROR;
    01308
    01309   for (T **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01310     T *st = *stp;
    01311
    01312     /* now we need to make the "spanned" area of the railway station smaller
    01313      * if we deleted something at the edges.
    01314      * we also need to adjust train_tile. */
    01315     MakeRailStationAreaSmaller(st);
    01316     UpdateStationSignCoord(st);
    01317
    01318     /* if we deleted the whole station, delete the train facility. */
    01319     if (st->train_station.tile == INVALID_TILE) {
    01320       st->facilities &= ~FACIL_TRAIN;
    01321       SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01322       st->UpdateVirtCoord();
    01323       DeleteStationIfEmpty(st);
    01324     }
    01325   }
    01326
    01327   total_cost.AddCost(quantity * removal_cost);
    01328   return total_cost;
    01329 }
    01330
    01341 CommandCost CmdRemoveFromRailStation(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01342 {
    01343   TileIndex end = p1 == 0 ? start : p1;
    01344   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01345
    01346   TileArea ta(start, end);
    01347   SmallVector<Station *, 4> affected_stations;
    01348
    01349   CommandCost ret = RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_STATION_RAIL], HasBit(p2, 0));
    01350   if (ret.Failed()) return ret;
    01351
    01352   /* Do all station specific functions here. */
    01353   for (Station **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01354     Station *st = *stp;
    01355
    01356     if (st->train_station.tile == INVALID_TILE) SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01357     st->MarkTilesDirty(false);
    01358     st->RecomputeIndustriesNear();
    01359   }
    01360
    01361   /* Now apply the rail cost to the number that we deleted */
    01362   return ret;
    01363 }
    01364
    01375 CommandCost CmdRemoveFromRailWaypoint(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01376 {
    01377   TileIndex end = p1 == 0 ? start : p1;
    01378   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01379
    01380   TileArea ta(start, end);
    01381   SmallVector<Waypoint *, 4> affected_stations;
    01382
    01383   return RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_WAYPOINT_RAIL], HasBit(p2, 0));
    01384 }
    01385
    01386
    01394 template <class T>
    01395 CommandCost RemoveRailStation(T *st, DoCommandFlag flags)
    01396 {
    01397   /* Current company owns the station? */
    01398   if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) return CMD_ERROR;
    01399
    01400   /* determine width and height of platforms */
    01401   TileArea ta = st->train_station;
    01402
    01403   assert(ta.w != 0 && ta.h != 0);
    01404
    01405   CommandCost cost(EXPENSES_CONSTRUCTION);
    01406   /* clear all areas of the station */
    01407   TILE_AREA_LOOP(tile, ta) {
    01408     /* for nonuniform stations, only remove tiles that are actually train station tiles */
    01409     if (!st->TileBelongsToRailStation(tile)) continue;
    01410
    01411     if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
    01412
    01413     cost.AddCost(_price[PR_CLEAR_STATION_RAIL]);
    01414     if (flags & DC_EXEC) {
    01415       /* read variables before the station tile is removed */
    01416       Track track = GetRailStationTrack(tile);
    01417       Owner owner = GetTileOwner(tile); // _current_company can be OWNER_WATER
    01418       Train *v = NULL;
    01419       if (HasStationReservation(tile)) {
    01420         v = GetTrainForReservation(tile, track);
    01421         if (v != NULL) FreeTrainTrackReservation(v);
    01422       }
    01423       DoClearSquare(tile);
    01424       AddTrackToSignalBuffer(tile, track, owner);
    01425       YapfNotifyTrackLayoutChange(tile, track);
    01426       if (v != NULL) TryPathReserve(v, true);
    01427     }
    01428   }
    01429
    01430   if (flags & DC_EXEC) {
    01431     st->rect.AfterRemoveRect(st, st->train_station.tile, st->train_station.w, st->train_station.h);
    01432
    01433     st->train_station.Clear();
    01434
    01435     st->facilities &= ~FACIL_TRAIN;
    01436
    01437     free(st->speclist);
    01438     st->num_specs = 0;
    01439     st->speclist  = NULL;
    01440     st->cached_anim_triggers = 0;
    01441
    01442     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01443     st->UpdateVirtCoord();
    01444     DeleteStationIfEmpty(st);
    01445   }
    01446
    01447   return cost;
    01448 }
    01449
    01456 static CommandCost RemoveRailStation(TileIndex tile, DoCommandFlag flags)
    01457 {
    01458   /* if there is flooding and non-uniform stations are enabled, remove platforms tile by tile */
    01459   if (_current_company == OWNER_WATER && _settings_game.station.nonuniform_stations) {
    01460     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_STATION);
    01461   }
    01462
    01463   Station *st = Station::GetByTile(tile);
    01464   CommandCost cost = RemoveRailStation(st, flags);
    01465
    01466   if (flags & DC_EXEC) st->RecomputeIndustriesNear();
    01467
    01468   return cost;
    01469 }
    01470
    01477 static CommandCost RemoveRailWaypoint(TileIndex tile, DoCommandFlag flags)
    01478 {
    01479   /* if there is flooding and non-uniform stations are enabled, remove waypoints tile by tile */
    01480   if (_current_company == OWNER_WATER && _settings_game.station.nonuniform_stations) {
    01481     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_WAYPOINT);
    01482   }
    01483
    01484   return RemoveRailStation(Waypoint::GetByTile(tile), flags);
    01485 }
    01486
    01487
    01493 static RoadStop **FindRoadStopSpot(bool truck_station, Station *st)
    01494 {
    01495   RoadStop **primary_stop = (truck_station) ? &st->truck_stops : &st->bus_stops;
    01496
    01497   if (*primary_stop == NULL) {
    01498     /* we have no roadstop of the type yet, so write a "primary stop" */
    01499     return primary_stop;
    01500   } else {
    01501     /* there are stops already, so append to the end of the list */
    01502     RoadStop *stop = *primary_stop;
    01503     while (stop->next != NULL) stop = stop->next;
    01504     return &stop->next;
    01505   }
    01506 }
    01507
    01520 CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01521 {
    01522   bool type = HasBit(p2, 0);
    01523   bool is_drive_through = HasBit(p2, 1);
    01524   bool build_over_road  = is_drive_through && IsNormalRoadTile(tile);
    01525   RoadTypes rts = (RoadTypes)GB(p2, 2, 2);
    01526   StationID station_to_join = GB(p2, 16, 16);
    01527   bool reuse = (station_to_join != NEW_STATION);
    01528   if (!reuse) station_to_join = INVALID_STATION;
    01529   bool distant_join = (station_to_join != INVALID_STATION);
    01530   Owner tram_owner = _current_company;
    01531   Owner road_owner = _current_company;
    01532
    01533   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01534
    01535   if (!AreValidRoadTypes(rts) || !HasRoadTypesAvail(_current_company, rts)) return CMD_ERROR;
    01536
    01537   /* Trams only have drive through stops */
    01538   if (!is_drive_through && HasBit(rts, ROADTYPE_TRAM)) return CMD_ERROR;
    01539
    01540   /* Saveguard the parameters */
    01541   if (!IsValidDiagDirection((DiagDirection)p1)) return CMD_ERROR;
    01542   /* If it is a drive-through stop check for valid axis */
    01543   if (is_drive_through && !IsValidAxis((Axis)p1)) return CMD_ERROR;
    01544   /* Road bits in the wrong direction */
    01545   if (build_over_road && (GetAllRoadBits(tile) & ((Axis)p1 == AXIS_X ? ROAD_Y : ROAD_X)) != 0) return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    01546
    01547   if (!CheckIfAuthorityAllowsNewStation(tile, flags)) return CMD_ERROR;
    01548
    01549   RoadTypes cur_rts = IsNormalRoadTile(tile) ? GetRoadTypes(tile) : ROADTYPES_NONE;
    01550   uint num_roadbits = 0;
    01551   /* Not allowed to build over this road */
    01552   if (build_over_road) {
    01553     /* there is a road, check if we can build road+tram stop over it */
    01554     if (HasBit(cur_rts, ROADTYPE_ROAD)) {
    01555       road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    01556       if (road_owner == OWNER_TOWN) {
    01557         if (!_settings_game.construction.road_stop_on_town_road) return_cmd_error(STR_ERROR_DRIVE_THROUGH_ON_TOWN_ROAD);
    01558       } else if (!_settings_game.construction.road_stop_on_competitor_road && road_owner != OWNER_NONE && !CheckOwnership(road_owner)) {
    01559         return CMD_ERROR;
    01560       }
    01561       num_roadbits += CountBits(GetRoadBits(tile, ROADTYPE_ROAD));
    01562     }
    01563
    01564     /* there is a tram, check if we can build road+tram stop over it */
    01565     if (HasBit(cur_rts, ROADTYPE_TRAM)) {
    01566       tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    01567       if (!_settings_game.construction.road_stop_on_competitor_road && tram_owner != OWNER_NONE && !CheckOwnership(tram_owner)) {
    01568         return CMD_ERROR;
    01569       }
    01570       num_roadbits += CountBits(GetRoadBits(tile, ROADTYPE_TRAM));
    01571     }
    01572
    01573     /* Don't allow building the roadstop when vehicles are already driving on it */
    01574     if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
    01575
    01576     /* Do not remove roadtypes! */
    01577     rts |= cur_rts;
    01578   }
    01579
    01580   CommandCost cost = CheckFlatLandBelow(tile, 1, 1, flags, is_drive_through ? 5 << p1 : 1 << p1, NULL, !build_over_road);
    01581   if (cost.Failed()) return cost;
    01582   uint roadbits_to_build = CountBits(rts) * 2 - num_roadbits;
    01583   cost.AddCost(_price[PR_BUILD_ROAD] * roadbits_to_build);
    01584
    01585   Station *st = NULL;
    01586   CommandCost ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 5), TileArea(tile, 1, 1), &st);
    01587   if (ret.Failed()) return ret;
    01588
    01589   /* Find a deleted station close to us */
    01590   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    01591
    01592   /* give us a road stop in the list, and check if something went wrong */
    01593   if (!RoadStop::CanAllocateItem()) return_cmd_error(type ? STR_ERROR_TOO_MANY_TRUCK_STOPS : STR_ERROR_TOO_MANY_BUS_STOPS);
    01594
    01595   if (st != NULL) {
    01596     if (st->owner != _current_company) {
    01597       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01598     }
    01599
    01600     if (!st->rect.BeforeAddTile(tile, StationRect::ADD_TEST)) return CMD_ERROR;
    01601   } else {
    01602     /* allocate and initialize new station */
    01603     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01604
    01605     if (flags & DC_EXEC) {
    01606       st = new Station(tile);
    01607
    01608       st->town = ClosestTownFromTile(tile, UINT_MAX);
    01609       st->string_id = GenerateStationName(st, tile, STATIONNAMING_ROAD);
    01610
    01611       if (Company::IsValidID(_current_company)) {
    01612         SetBit(st->town->have_ratings, _current_company);
    01613       }
    01614     }
    01615   }
    01616
    01617   cost.AddCost(_price[type ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
    01618
    01619   if (flags & DC_EXEC) {
    01620     RoadStop *road_stop = new RoadStop(tile);
    01621     /* Insert into linked list of RoadStops */
    01622     RoadStop **currstop = FindRoadStopSpot(type, st);
    01623     *currstop = road_stop;
    01624
    01625     if (type) {
    01626       st->truck_station.Add(tile);
    01627     } else {
    01628       st->bus_station.Add(tile);
    01629     }
    01630
    01631     /* initialize an empty station */
    01632     st->AddFacility((type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, tile);
    01633
    01634     st->rect.BeforeAddTile(tile, StationRect::ADD_TRY);
    01635
    01636     RoadStopType rs_type = type ? ROADSTOP_TRUCK : ROADSTOP_BUS;
    01637     if (is_drive_through) {
    01638       MakeDriveThroughRoadStop(tile, st->owner, road_owner, tram_owner, st->index, rs_type, rts, (Axis)p1);
    01639       road_stop->MakeDriveThrough();
    01640     } else {
    01641       MakeRoadStop(tile, st->owner, st->index, rs_type, rts, (DiagDirection)p1);
    01642     }
    01643
    01644     st->UpdateVirtCoord();
    01645     UpdateStationAcceptance(st, false);
    01646     st->RecomputeIndustriesNear();
    01647     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01648     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01649     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_ROADVEHS);
    01650   }
    01651   return cost;
    01652 }
    01653
    01654
    01655 static Vehicle *ClearRoadStopStatusEnum(Vehicle *v, void *)
    01656 {
    01657   if (v->type == VEH_ROAD) {
    01658     /* Okay... we are a road vehicle on a drive through road stop.
    01659      * But that road stop has just been removed, so we need to make
    01660      * sure we are in a valid state... however, vehicles can also
    01661      * turn on road stop tiles, so only clear the 'road stop' state
    01662      * bits and only when the state was 'in road stop', otherwise
    01663      * we'll end up clearing the turn around bits. */
    01664     RoadVehicle *rv = RoadVehicle::From(v);
    01665     if (HasBit(rv->state, RVS_IN_DT_ROAD_STOP)) rv->state &= RVSB_ROAD_STOP_TRACKDIR_MASK;
    01666   }
    01667
    01668   return NULL;
    01669 }
    01670
    01671
    01678 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags)
    01679 {
    01680   Station *st = Station::GetByTile(tile);
    01681
    01682   if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) {
    01683     return CMD_ERROR;
    01684   }
    01685
    01686   bool is_truck = IsTruckStop(tile);
    01687
    01688   RoadStop **primary_stop;
    01689   RoadStop *cur_stop;
    01690   if (is_truck) { // truck stop
    01691     primary_stop = &st->truck_stops;
    01692     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_TRUCK);
    01693   } else {
    01694     primary_stop = &st->bus_stops;
    01695     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_BUS);
    01696   }
    01697
    01698   assert(cur_stop != NULL);
    01699
    01700   /* don't do the check for drive-through road stops when company bankrupts */
    01701   if (IsDriveThroughStopTile(tile) && (flags & DC_BANKRUPT)) {
    01702     /* remove the 'going through road stop' status from all vehicles on that tile */
    01703     if (flags & DC_EXEC) FindVehicleOnPos(tile, NULL, &ClearRoadStopStatusEnum);
    01704   } else {
    01705     if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
    01706   }
    01707
    01708   if (flags & DC_EXEC) {
    01709     if (*primary_stop == cur_stop) {
    01710       /* removed the first stop in the list */
    01711       *primary_stop = cur_stop->next;
    01712       /* removed the only stop? */
    01713       if (*primary_stop == NULL) {
    01714         st->facilities &= (is_truck ? ~FACIL_TRUCK_STOP : ~FACIL_BUS_STOP);
    01715       }
    01716     } else {
    01717       /* tell the predecessor in the list to skip this stop */
    01718       RoadStop *pred = *primary_stop;
    01719       while (pred->next != cur_stop) pred = pred->next;
    01720       pred->next = cur_stop->next;
    01721     }
    01722
    01723     if (IsDriveThroughStopTile(tile)) {
    01724       /* Clears the tile for us */
    01725       cur_stop->ClearDriveThrough();
    01726     } else {
    01727       DoClearSquare(tile);
    01728     }
    01729
    01730     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_ROADVEHS);
    01731     delete cur_stop;
    01732
    01733     /* Make sure no vehicle is going to the old roadstop */
    01734     RoadVehicle *v;
    01735     FOR_ALL_ROADVEHICLES(v) {
    01736       if (v->First() == v && v->current_order.IsType(OT_GOTO_STATION) &&
    01737           v->dest_tile == tile) {
    01738         v->dest_tile = v->GetOrderStationLocation(st->index);
    01739       }
    01740     }
    01741
    01742     st->rect.AfterRemoveTile(st, tile);
    01743
    01744     st->UpdateVirtCoord();
    01745     st->RecomputeIndustriesNear();
    01746     DeleteStationIfEmpty(st);
    01747
    01748     /* Update the tile area of the truck/bus stop */
    01749     if (is_truck) {
    01750       st->truck_station.Clear();
    01751       for (const RoadStop *rs = st->truck_stops; rs != NULL; rs = rs->next) st->truck_station.Add(rs->xy);
    01752     } else {
    01753       st->bus_station.Clear();
    01754       for (const RoadStop *rs = st->bus_stops; rs != NULL; rs = rs->next) st->bus_station.Add(rs->xy);
    01755     }
    01756   }
    01757
    01758   return CommandCost(EXPENSES_CONSTRUCTION, _price[is_truck ? PR_CLEAR_STATION_TRUCK : PR_CLEAR_STATION_BUS]);
    01759 }
    01760
    01769 CommandCost CmdRemoveRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01770 {
    01771   /* Make sure the specified tile is a road stop of the correct type */
    01772   if (!IsTileType(tile, MP_STATION) || !IsRoadStop(tile) || (uint32)GetRoadStopType(tile) != GB(p2, 0, 1)) return CMD_ERROR;
    01773
    01774   /* Save the stop info before it is removed */
    01775   bool is_drive_through = IsDriveThroughStopTile(tile);
    01776   RoadTypes rts = GetRoadTypes(tile);
    01777   RoadBits road_bits = IsDriveThroughStopTile(tile) ?
    01778       ((GetRoadStopDir(tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y) :
    01779       DiagDirToRoadBits(GetRoadStopDir(tile));
    01780
    01781   Owner road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    01782   Owner tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    01783   CommandCost ret = RemoveRoadStop(tile, flags);
    01784
    01785   /* If the stop was a drive-through stop replace the road */
    01786   if ((flags & DC_EXEC) && ret.Succeeded() && is_drive_through) {
    01787     /* Rebuild the drive throuhg road stop. As a road stop can only be
    01788      * removed by the owner of the roadstop, _current_company is the
    01789      * owner of the road stop. */
    01790     MakeRoadNormal(tile, road_bits, rts, ClosestTownFromTile(tile, UINT_MAX)->index,
    01791         road_owner, tram_owner);
    01792   }
    01793
    01794   return ret;
    01795 }
    01796
    01804 static uint GetMinimalAirportDistanceToTile(const AirportSpec *as, TileIndex town_tile, TileIndex airport_tile)
    01805 {
    01806   uint ttx = TileX(town_tile); // X, Y of town
    01807   uint tty = TileY(town_tile);
    01808
    01809   uint atx = TileX(airport_tile); // X, Y of northern airport corner
    01810   uint aty = TileY(airport_tile);
    01811
    01812   uint btx = TileX(airport_tile) + as->size_x - 1; // X, Y of southern corner
    01813   uint bty = TileY(airport_tile) + as->size_y - 1;
    01814
    01815   /* if ttx < atx, dx = atx - ttx
    01816    * if atx <= ttx <= btx, dx = 0
    01817    * else, dx = ttx - btx (similiar for dy) */
    01818   uint dx = ttx < atx ? atx - ttx : (ttx <= btx ? 0 : ttx - btx);
    01819   uint dy = tty < aty ? aty - tty : (tty <= bty ? 0 : tty - bty);
    01820
    01821   return dx + dy;
    01822 }
    01823
    01832 uint8 GetAirportNoiseLevelForTown(const AirportSpec *as, TileIndex town_tile, TileIndex tile)
    01833 {
    01834   /* 0 cannot be accounted, and 1 is the lowest that can be reduced from town.
    01835    * So no need to go any further*/
    01836   if (as->noise_level < 2) return as->noise_level;
    01837
    01838   uint distance = GetMinimalAirportDistanceToTile(as, town_tile, tile);
    01839
    01840   /* The steps for measuring noise reduction are based on the "magical" (and arbitrary) 8 base distance
    01841    * adding the town_council_tolerance 4 times, as a way to graduate, depending of the tolerance.
    01842    * Basically, it says that the less tolerant a town is, the bigger the distance before
    01843    * an actual decrease can be granted */
    01844   uint8 town_tolerance_distance = 8 + (_settings_game.difficulty.town_council_tolerance * 4);
    01845
    01846   /* now, we want to have the distance segmented using the distance judged bareable by town
    01847    * This will give us the coefficient of reduction the distance provides. */
    01848   uint noise_reduction = distance / town_tolerance_distance;
    01849
    01850   /* If the noise reduction equals the airport noise itself, don't give it for free.
    01851    * Otherwise, simply reduce the airport's level. */
    01852   return noise_reduction >= as->noise_level ? 1 : as->noise_level - noise_reduction;
    01853 }
    01854
    01862 Town *AirportGetNearestTown(const AirportSpec *as, TileIndex airport_tile)
    01863 {
    01864   Town *t, *nearest = NULL;
    01865   uint add = as->size_x + as->size_y - 2; // GetMinimalAirportDistanceToTile can differ from DistanceManhattan by this much
    01866   uint mindist = UINT_MAX - add; // prevent overflow
    01867   FOR_ALL_TOWNS(t) {
    01868     if (DistanceManhattan(t->xy, airport_tile) < mindist + add) { // avoid calling GetMinimalAirportDistanceToTile too often
    01869       uint dist = GetMinimalAirportDistanceToTile(as, t->xy, airport_tile);
    01870       if (dist < mindist) {
    01871         nearest = t;
    01872         mindist = dist;
    01873       }
    01874     }
    01875   }
    01876
    01877   return nearest;
    01878 }
    01879
    01880
    01882 void UpdateAirportsNoise()
    01883 {
    01884   Town *t;
    01885   const Station *st;
    01886
    01887   FOR_ALL_TOWNS(t) t->noise_reached = 0;
    01888
    01889   FOR_ALL_STATIONS(st) {
    01890     if (st->airport_tile != INVALID_TILE) {
    01891       const AirportSpec *as = st->GetAirportSpec();
    01892       Town *nearest = AirportGetNearestTown(as, st->airport_tile);
    01893       nearest->noise_reached += GetAirportNoiseLevelForTown(as, nearest->xy, st->airport_tile);
    01894     }
    01895   }
    01896 }
    01897
    01908 CommandCost CmdBuildAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01909 {
    01910   bool airport_upgrade = true;
    01911   StationID station_to_join = GB(p2, 16, 16);
    01912   bool reuse = (station_to_join != NEW_STATION);
    01913   if (!reuse) station_to_join = INVALID_STATION;
    01914   bool distant_join = (station_to_join != INVALID_STATION);
    01915
    01916   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01917
    01918   if (p1 >= NUM_AIRPORTS) return CMD_ERROR;
    01919
    01920   if (!CheckIfAuthorityAllowsNewStation(tile, flags)) {
    01921     return CMD_ERROR;
    01922   }
    01923
    01924   /* Check if a valid, buildable airport was chosen for construction */
    01925   const AirportSpec *as = AirportSpec::Get(p1);
    01926   if (!as->IsAvailable()) return CMD_ERROR;
    01927
    01928   Town *t = ClosestTownFromTile(tile, UINT_MAX);
    01929   int w = as->size_x;
    01930   int h = as->size_y;
    01931
    01932   if (w > _settings_game.station.station_spread || h > _settings_game.station.station_spread) {
    01933     _error_message = STR_ERROR_STATION_TOO_SPREAD_OUT;
    01934     return CMD_ERROR;
    01935   }
    01936
    01937   CommandCost cost = CheckFlatLandBelow(tile, w, h, flags, 0, NULL);
    01938   if (cost.Failed()) return cost;
    01939
    01940   /* Go get the final noise level, that is base noise minus factor from distance to town center */
    01941   Town *nearest = AirportGetNearestTown(as, tile);
    01942   uint newnoise_level = GetAirportNoiseLevelForTown(as, nearest->xy, tile);
    01943
    01944   /* Check if local auth would allow a new airport */
    01945   StringID authority_refuse_message = STR_NULL;
    01946
    01947   if (_settings_game.economy.station_noise_level) {
    01948     /* do not allow to build a new airport if this raise the town noise over the maximum allowed by town */
    01949     if ((nearest->noise_reached + newnoise_level) > nearest->MaxTownNoise()) {
    01950       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_NOISE;
    01951     }
    01952   } else {
    01953     uint num = 0;
    01954     const Station *st;
    01955     FOR_ALL_STATIONS(st) {
    01956       if (st->town == t && (st->facilities & FACIL_AIRPORT) && st->airport_type != AT_OILRIG) num++;
    01957     }
    01958     if (num >= 2) {
    01959       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_AIRPORT;
    01960     }
    01961   }
    01962
    01963   if (authority_refuse_message != STR_NULL) {
    01964     SetDParam(0, t->index);
    01965     return_cmd_error(authority_refuse_message);
    01966   }
    01967
    01968   Station *st = NULL;
    01969   CommandCost ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 0), TileArea(tile, w, h), &st);
    01970   if (ret.Failed()) return ret;
    01971
    01972   /* Distant join */
    01973   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    01974
    01975   /* Find a deleted station close to us */
    01976   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    01977
    01978   if (st != NULL) {
    01979     if (st->owner != _current_company) {
    01980       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01981     }
    01982
    01983     if (!st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TEST)) return CMD_ERROR;
    01984
    01985     if (st->airport_tile != INVALID_TILE) {
    01986       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_AIRPORT);
    01987     }
    01988   } else {
    01989     airport_upgrade = false;
    01990
    01991     /* allocate and initialize new station */
    01992     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01993
    01994     if (flags & DC_EXEC) {
    01995       st = new Station(tile);
    01996
    01997       st->town = t;
    01998       st->string_id = GenerateStationName(st, tile, !(GetAirport(p1)->flags & AirportFTAClass::AIRPLANES) ? STATIONNAMING_HELIPORT : STATIONNAMING_AIRPORT);
    01999
    02000       if (Company::IsValidID(_current_company)) {
    02001         SetBit(st->town->have_ratings, _current_company);
    02002       }
    02003     }
    02004   }
    02005
    02006   cost.AddCost(_price[PR_BUILD_STATION_AIRPORT] * w * h);
    02007
    02008   if (flags & DC_EXEC) {
    02009     /* Always add the noise, so there will be no need to recalculate when option toggles */
    02010     nearest->noise_reached += newnoise_level;
    02011
    02012     st->airport_tile = tile;
    02013     st->AddFacility(FACIL_AIRPORT, tile);
    02014     st->airport_type = (byte)p1;
    02015     st->airport_flags = 0;
    02016
    02017     st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TRY);
    02018
    02019     /* if airport was demolished while planes were en-route to it, the
    02020      * positions can no longer be the same (v->u.air.pos), since different
    02021      * airports have different indexes. So update all planes en-route to this
    02022      * airport. Only update if
    02023      * 1. airport is upgraded
    02024      * 2. airport is added to existing station (unfortunately unavoideable)
    02025      */
    02026     if (airport_upgrade) UpdateAirplanesOnNewStation(st);
    02027
    02028     const AirportTileTable *it = as->table[0];
    02029     do {
    02030       TileIndex cur_tile = tile + ToTileIndexDiff(it->ti);
    02031       MakeAirport(cur_tile, st->owner, st->index, it->gfx);
    02032     } while ((++it)->ti.x != -0x80);
    02033
    02034     st->UpdateVirtCoord();
    02035     UpdateStationAcceptance(st, false);
    02036     st->RecomputeIndustriesNear();
    02037     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02038     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02039     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_PLANES);
    02040
    02041     if (_settings_game.economy.station_noise_level) {
    02042       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02043     }
    02044   }
    02045
    02046   return cost;
    02047 }
    02048
    02055 static CommandCost RemoveAirport(TileIndex tile, DoCommandFlag flags)
    02056 {
    02057   Station *st = Station::GetByTile(tile);
    02058
    02059   if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) {
    02060     return CMD_ERROR;
    02061   }
    02062
    02063   tile = st->airport_tile;
    02064
    02065   const AirportSpec *as = st->GetAirportSpec();
    02066   int w = as->size_x;
    02067   int h = as->size_y;
    02068
    02069   CommandCost cost(EXPENSES_CONSTRUCTION);
    02070
    02071   const Aircraft *a;
    02072   FOR_ALL_AIRCRAFT(a) {
    02073     if (!a->IsNormalAircraft()) continue;
    02074     if (a->targetairport == st->index && a->state != FLYING) return CMD_ERROR;
    02075   }
    02076
    02077   TILE_LOOP(tile_cur, w, h, tile) {
    02078     if (!EnsureNoVehicleOnGround(tile_cur)) return CMD_ERROR;
    02079
    02080     if (!st->TileBelongsToAirport(tile_cur)) continue;
    02081
    02082     cost.AddCost(_price[PR_CLEAR_STATION_AIRPORT]);
    02083
    02084     if (flags & DC_EXEC) {
    02085       DeleteAnimatedTile(tile_cur);
    02086       DoClearSquare(tile_cur);
    02087     }
    02088   }
    02089
    02090   if (flags & DC_EXEC) {
    02091     for (uint i = 0; i < as->nof_depots; ++i) {
    02092       DeleteWindowById(
    02093         WC_VEHICLE_DEPOT, st->GetHangarTile(i)
    02094       );
    02095     }
    02096
    02097     /* Go get the final noise level, that is base noise minus factor from distance to town center.
    02098      * And as for construction, always remove it, even if the setting is not set, in order to avoid the
    02099      * need of recalculation */
    02100     Town *nearest = AirportGetNearestTown(as, tile);
    02101     nearest->noise_reached -= GetAirportNoiseLevelForTown(as, nearest->xy, tile);
    02102
    02103     st->rect.AfterRemoveRect(st, tile, w, h);
    02104
    02105     st->airport_tile = INVALID_TILE;
    02106     st->facilities &= ~FACIL_AIRPORT;
    02107
    02108     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_PLANES);
    02109
    02110     if (_settings_game.economy.station_noise_level) {
    02111       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02112     }
    02113
    02114     st->UpdateVirtCoord();
    02115     st->RecomputeIndustriesNear();
    02116     DeleteStationIfEmpty(st);
    02117   }
    02118
    02119   return cost;
    02120 }
    02121
    02128 bool HasStationInUse(StationID station, CompanyID company)
    02129 {
    02130   const Vehicle *v;
    02131   FOR_ALL_VEHICLES(v) {
    02132     if (company == INVALID_COMPANY || v->owner == company) {
    02133       const Order *order;
    02134       FOR_VEHICLE_ORDERS(v, order) {
    02135         if ((order->IsType(OT_GOTO_STATION) || order->IsType(OT_GOTO_WAYPOINT)) && order->GetDestination() == station) {
    02136           return true;
    02137         }
    02138       }
    02139     }
    02140   }
    02141   return false;
    02142 }
    02143
    02144 static const TileIndexDiffC _dock_tileoffs_chkaround[] = {
    02145   {-1,  0},
    02146   { 0,  0},
    02147   { 0,  0},
    02148   { 0, -1}
    02149 };
    02150 static const byte _dock_w_chk[4] = { 2, 1, 2, 1 };
    02151 static const byte _dock_h_chk[4] = { 1, 2, 1, 2 };
    02152
    02161 CommandCost CmdBuildDock(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02162 {
    02163   StationID station_to_join = GB(p2, 16, 16);
    02164   bool reuse = (station_to_join != NEW_STATION);
    02165   if (!reuse) station_to_join = INVALID_STATION;
    02166   bool distant_join = (station_to_join != INVALID_STATION);
    02167
    02168   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    02169
    02170   DiagDirection direction = GetInclinedSlopeDirection(GetTileSlope(tile, NULL));
    02171   if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02172   direction = ReverseDiagDir(direction);
    02173
    02174   /* Docks cannot be placed on rapids */
    02175   if (IsWaterTile(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02176
    02177   if (!CheckIfAuthorityAllowsNewStation(tile, flags)) return CMD_ERROR;
    02178
    02179   if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02180
    02181   if (DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR).Failed()) return CMD_ERROR;
    02182
    02183   TileIndex tile_cur = tile + TileOffsByDiagDir(direction);
    02184
    02185   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur, NULL) != SLOPE_FLAT) {
    02186     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02187   }
    02188
    02189   if (MayHaveBridgeAbove(tile_cur) && IsBridgeAbove(tile_cur)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02190
    02191   /* Get the water class of the water tile before it is cleared.*/
    02192   WaterClass wc = GetWaterClass(tile_cur);
    02193
    02194   if (DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR).Failed()) return CMD_ERROR;
    02195
    02196   tile_cur += TileOffsByDiagDir(direction);
    02197   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur, NULL) != SLOPE_FLAT) {
    02198     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02199   }
    02200
    02201   /* middle */
    02202   Station *st = NULL;
    02203   CommandCost ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p1, 0),
    02204       TileArea(tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02205           _dock_w_chk[direction], _dock_h_chk[direction]), &st);
    02206   if (ret.Failed()) return ret;
    02207
    02208   /* Distant join */
    02209   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    02210
    02211   /* Find a deleted station close to us */
    02212   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    02213
    02214   if (st != NULL) {
    02215     if (st->owner != _current_company) {
    02216       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    02217     }
    02218
    02219     if (!st->rect.BeforeAddRect(
    02220         tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02221         _dock_w_chk[direction], _dock_h_chk[direction], StationRect::ADD_TEST)) return CMD_ERROR;
    02222
    02223     if (st->dock_tile != INVALID_TILE) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_DOCK);
    02224   } else {
    02225     /* allocate and initialize new station */
    02226     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    02227
    02228     if (flags & DC_EXEC) {
    02229       st = new Station(tile);
    02230
    02231       st->town = ClosestTownFromTile(tile, UINT_MAX);
    02232       st->string_id = GenerateStationName(st, tile, STATIONNAMING_DOCK);
    02233
    02234       if (Company::IsValidID(_current_company)) {
    02235         SetBit(st->town->have_ratings, _current_company);
    02236       }
    02237     }
    02238   }
    02239
    02240   if (flags & DC_EXEC) {
    02241     st->dock_tile = tile;
    02242     st->AddFacility(FACIL_DOCK, tile);
    02243
    02244     st->rect.BeforeAddRect(
    02245         tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02246         _dock_w_chk[direction], _dock_h_chk[direction], StationRect::ADD_TRY);
    02247
    02248     MakeDock(tile, st->owner, st->index, direction, wc);
    02249
    02250     st->UpdateVirtCoord();
    02251     UpdateStationAcceptance(st, false);
    02252     st->RecomputeIndustriesNear();
    02253     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02254     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02255     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_SHIPS);
    02256   }
    02257
    02258   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_STATION_DOCK]);
    02259 }
    02260
    02267 static CommandCost RemoveDock(TileIndex tile, DoCommandFlag flags)
    02268 {
    02269   Station *st = Station::GetByTile(tile);
    02270   if (!CheckOwnership(st->owner)) return CMD_ERROR;
    02271
    02272   TileIndex tile1 = st->dock_tile;
    02273   TileIndex tile2 = tile1 + TileOffsByDiagDir(GetDockDirection(tile1));
    02274
    02275   if (!EnsureNoVehicleOnGround(tile1)) return CMD_ERROR;
    02276   if (!EnsureNoVehicleOnGround(tile2)) return CMD_ERROR;
    02277
    02278   if (flags & DC_EXEC) {
    02279     DoClearSquare(tile1);
    02280     MakeWaterKeepingClass(tile2, st->owner);
    02281
    02282     st->rect.AfterRemoveTile(st, tile1);
    02283     st->rect.AfterRemoveTile(st, tile2);
    02284
    02285     MarkTileDirtyByTile(tile2);
    02286
    02287     st->dock_tile = INVALID_TILE;
    02288     st->facilities &= ~FACIL_DOCK;
    02289
    02290     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_SHIPS);
    02291     st->UpdateVirtCoord();
    02292     st->RecomputeIndustriesNear();
    02293     DeleteStationIfEmpty(st);
    02294   }
    02295
    02296   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_STATION_DOCK]);
    02297 }
    02298
    02299 #include "table/station_land.h"
    02300
    02301 const DrawTileSprites *GetStationTileLayout(StationType st, byte gfx)
    02302 {
    02303   return &_station_display_datas[st][gfx];
    02304 }
    02305
    02306 static void DrawTile_Station(TileInfo *ti)
    02307 {
    02308   const DrawTileSprites *t = NULL;
    02309   RoadTypes roadtypes;
    02310   int32 total_offset;
    02311   int32 custom_ground_offset;
    02312
    02313   if (HasStationRail(ti->tile)) {
    02314     const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
    02315     roadtypes = ROADTYPES_NONE;
    02316     total_offset = rti->total_offset;
    02317     custom_ground_offset = rti->custom_ground_offset;
    02318   } else {
    02319     roadtypes = IsRoadStop(ti->tile) ? GetRoadTypes(ti->tile) : ROADTYPES_NONE;
    02320     total_offset = 0;
    02321     custom_ground_offset = 0;
    02322   }
    02323   uint32 relocation = 0;
    02324   const BaseStation *st = NULL;
    02325   const StationSpec *statspec = NULL;
    02326   Owner owner = GetTileOwner(ti->tile);
    02327
    02328   SpriteID palette;
    02329   if (Company::IsValidID(owner)) {
    02330     palette = COMPANY_SPRITE_COLOUR(owner);
    02331   } else {
    02332     /* Some stations are not owner by a company, namely oil rigs */
    02333     palette = PALETTE_TO_GREY;
    02334   }
    02335
    02336   if (IsCustomStationSpecIndex(ti->tile)) {
    02337     /* look for customization */
    02338     st = BaseStation::GetByTile(ti->tile);
    02339     statspec = st->speclist[GetCustomStationSpecIndex(ti->tile)].spec;
    02340
    02341     if (statspec != NULL) {
    02342       uint tile = GetStationGfx(ti->tile);
    02343
    02344       relocation = GetCustomStationRelocation(statspec, st, ti->tile);
    02345
    02346       if (HasBit(statspec->callback_mask, CBM_STATION_SPRITE_LAYOUT)) {
    02347         uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0, 0, statspec, st, ti->tile);
    02348         if (callback != CALLBACK_FAILED) tile = (callback & ~1) + GetRailStationAxis(ti->tile);
    02349       }
    02350
    02351       /* Ensure the chosen tile layout is valid for this custom station */
    02352       if (statspec->renderdata != NULL) {
    02353         t = &statspec->renderdata[tile < statspec->tiles ? tile : (uint)GetRailStationAxis(ti->tile)];
    02354       }
    02355     }
    02356   }
    02357
    02358   if (t == NULL || t->seq == NULL) t = &_station_display_datas[GetStationType(ti->tile)][GetStationGfx(ti->tile)];
    02359
    02360   /* don't show foundation for docks */
    02361   if (ti->tileh != SLOPE_FLAT && !IsDock(ti->tile)) {
    02362     if (statspec != NULL && HasBit(statspec->flags, SSF_CUSTOM_FOUNDATIONS)) {
    02363       /* Station has custom foundations. */
    02364       SpriteID image = GetCustomStationFoundationRelocation(statspec, st, ti->tile);
    02365
    02366       if (HasBit(statspec->flags, SSF_EXTENDED_FOUNDATIONS)) {
    02367         /* Station provides extended foundations. */
    02368
    02369         static const uint8 foundation_parts[] = {
    02370           0, 0, 0, 0, // Invalid,  Invalid,   Invalid,   SLOPE_SW
    02371           0, 1, 2, 3, // Invalid,  SLOPE_EW,  SLOPE_SE,  SLOPE_WSE
    02372           0, 4, 5, 6, // Invalid,  SLOPE_NW,  SLOPE_NS,  SLOPE_NWS
    02373           7, 8, 9     // SLOPE_NE, SLOPE_ENW, SLOPE_SEN
    02374         };
    02375
    02376         AddSortableSpriteToDraw(image + foundation_parts[ti->tileh], PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02377       } else {
    02378         /* Draw simple foundations, built up from 8 possible foundation sprites. */
    02379
    02380         /* Each set bit represents one of the eight composite sprites to be drawn.
    02381          * 'Invalid' entries will not drawn but are included for completeness. */
    02382         static const uint8 composite_foundation_parts[] = {
    02383           /* Invalid  (00000000), Invalid   (11010001), Invalid   (11100100), SLOPE_SW  (11100000) */
    02384              0x00,                0xD1,                 0xE4,                 0xE0,
    02385           /* Invalid  (11001010), SLOPE_EW  (11001001), SLOPE_SE  (11000100), SLOPE_WSE (11000000) */
    02386              0xCA,                0xC9,                 0xC4,                 0xC0,
    02387           /* Invalid  (11010010), SLOPE_NW  (10010001), SLOPE_NS  (11100100), SLOPE_NWS (10100000) */
    02388              0xD2,                0x91,                 0xE4,                 0xA0,
    02389           /* SLOPE_NE (01001010), SLOPE_ENW (00001001), SLOPE_SEN (01000100) */
    02390              0x4A,                0x09,                 0x44
    02391         };
    02392
    02393         uint8 parts = composite_foundation_parts[ti->tileh];
    02394
    02395         /* If foundations continue beyond the tile's upper sides then
    02396          * mask out the last two pieces. */
    02397         uint z;
    02398         Slope slope = GetFoundationSlope(ti->tile, &z);
    02399         if (!HasFoundationNW(ti->tile, slope, z)) ClrBit(parts, 6);
    02400         if (!HasFoundationNE(ti->tile, slope, z)) ClrBit(parts, 7);
    02401
    02402         StartSpriteCombine();
    02403         for (int i = 0; i < 8; i++) {
    02404           if (HasBit(parts, i)) {
    02405             AddSortableSpriteToDraw(image + i, PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02406           }
    02407         }
    02408         EndSpriteCombine();
    02409       }
    02410
    02411       OffsetGroundSprite(31, 1);
    02412       ti->z += ApplyFoundationToSlope(FOUNDATION_LEVELED, &ti->tileh);
    02413     } else {
    02414       DrawFoundation(ti, FOUNDATION_LEVELED);
    02415     }
    02416   }
    02417
    02418   if (IsBuoy(ti->tile) || IsDock(ti->tile) || (IsOilRig(ti->tile) && GetWaterClass(ti->tile) != WATER_CLASS_INVALID)) {
    02419     if (ti->tileh == SLOPE_FLAT) {
    02420       DrawWaterClassGround(ti);
    02421     } else {
    02422       assert(IsDock(ti->tile));
    02423       TileIndex water_tile = ti->tile + TileOffsByDiagDir(GetDockDirection(ti->tile));
    02424       WaterClass wc = GetWaterClass(water_tile);
    02425       if (wc == WATER_CLASS_SEA) {
    02426         DrawShoreTile(ti->tileh);
    02427       } else {
    02428         DrawClearLandTile(ti, 3);
    02429       }
    02430     }
    02431   } else {
    02432     SpriteID image = t->ground.sprite;
    02433     SpriteID pal   = t->ground.pal;
    02434     if (HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE)) {
    02435       image += GetCustomStationGroundRelocation(statspec, st, ti->tile);
    02436       image += custom_ground_offset;
    02437     } else {
    02438       image += total_offset;
    02439     }
    02440     DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, palette));
    02441
    02442     /* PBS debugging, draw reserved tracks darker */
    02443     if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationRail(ti->tile) && HasStationReservation(ti->tile)) {
    02444       const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
    02445       DrawGroundSprite(GetRailStationAxis(ti->tile) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
    02446     }
    02447   }
    02448
    02449   if (HasStationRail(ti->tile) && HasCatenaryDrawn(GetRailType(ti->tile)) && IsStationTileElectrifiable(ti->tile)) DrawCatenary(ti);
    02450
    02451   if (HasBit(roadtypes, ROADTYPE_TRAM)) {
    02452     Axis axis = GetRoadStopDir(ti->tile) == DIAGDIR_NE ? AXIS_X : AXIS_Y;
    02453     DrawGroundSprite((HasBit(roadtypes, ROADTYPE_ROAD) ? SPR_TRAMWAY_OVERLAY : SPR_TRAMWAY_TRAM) + (axis ^ 1), PAL_NONE);
    02454     DrawTramCatenary(ti, axis == AXIS_X ? ROAD_X : ROAD_Y);
    02455   }
    02456
    02457   if (IsRailWaypoint(ti->tile)) {
    02458     /* Don't offset the waypoint graphics; they're always the same. */
    02459     total_offset = 0;
    02460   }
    02461
    02462   DrawRailTileSeq(ti, t, TO_BUILDINGS, total_offset, relocation, palette);
    02463 }
    02464
    02465 void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, RoadType roadtype, int image)
    02466 {
    02467   int32 total_offset = 0;
    02468   SpriteID pal = COMPANY_SPRITE_COLOUR(_local_company);
    02469   const DrawTileSprites *t = &_station_display_datas[st][image];
    02470
    02471   if (railtype != INVALID_RAILTYPE) {
    02472     const RailtypeInfo *rti = GetRailTypeInfo(railtype);
    02473     total_offset = rti->total_offset;
    02474   }
    02475
    02476   SpriteID img = t->ground.sprite;
    02477   DrawSprite(img + total_offset, HasBit(img, PALETTE_MODIFIER_COLOUR) ? pal : PAL_NONE, x, y);
    02478
    02479   if (roadtype == ROADTYPE_TRAM) {
    02480     DrawSprite(SPR_TRAMWAY_TRAM + (t->ground.sprite == SPR_ROAD_PAVED_STRAIGHT_X ? 1 : 0), PAL_NONE, x, y);
    02481   }
    02482
    02483   /* Default waypoint has no railtype specific sprites */
    02484   DrawRailTileSeqInGUI(x, y, t, st == STATION_WAYPOINT ? 0 : total_offset, 0, pal);
    02485 }
    02486
    02487 static uint GetSlopeZ_Station(TileIndex tile, uint x, uint y)
    02488 {
    02489   return GetTileMaxZ(tile);
    02490 }
    02491
    02492 static Foundation GetFoundation_Station(TileIndex tile, Slope tileh)
    02493 {
    02494   return FlatteningFoundation(tileh);
    02495 }
    02496
    02497 static void GetTileDesc_Station(TileIndex tile, TileDesc *td)
    02498 {
    02499   td->owner[0] = GetTileOwner(tile);
    02500   if (IsDriveThroughStopTile(tile)) {
    02501     Owner road_owner = INVALID_OWNER;
    02502     Owner tram_owner = INVALID_OWNER;
    02503     RoadTypes rts = GetRoadTypes(tile);
    02504     if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    02505     if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    02506
    02507     /* Is there a mix of owners? */
    02508     if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
    02509         (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
    02510       uint i = 1;
    02511       if (road_owner != INVALID_OWNER) {
    02512         td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
    02513         td->owner[i] = road_owner;
    02514         i++;
    02515       }
    02516       if (tram_owner != INVALID_OWNER) {
    02517         td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
    02518         td->owner[i] = tram_owner;
    02519       }
    02520     }
    02521   }
    02522   td->build_date = BaseStation::GetByTile(tile)->build_date;
    02523
    02524   const StationSpec *spec = GetStationSpec(tile);
    02525
    02526   if (spec != NULL) {
    02527     td->station_class = GetStationClassName(spec->sclass);
    02528     td->station_name = spec->name;
    02529
    02530     if (spec->grffile != NULL) {
    02531       const GRFConfig *gc = GetGRFConfig(spec->grffile->grfid);
    02532       td->grf = gc->name;
    02533     }
    02534   }
    02535
    02536   StringID str;
    02537   switch (GetStationType(tile)) {
    02538     default: NOT_REACHED();
    02539     case STATION_RAIL:     str = STR_LAI_STATION_DESCRIPTION_RAILROAD_STATION; break;
    02540     case STATION_AIRPORT:
    02541       str = (IsHangar(tile) ? STR_LAI_STATION_DESCRIPTION_AIRCRAFT_HANGAR : STR_LAI_STATION_DESCRIPTION_AIRPORT);
    02542       break;
    02543     case STATION_TRUCK:    str = STR_LAI_STATION_DESCRIPTION_TRUCK_LOADING_AREA; break;
    02544     case STATION_BUS:      str = STR_LAI_STATION_DESCRIPTION_BUS_STATION; break;
    02545     case STATION_OILRIG:   str = STR_INDUSTRY_NAME_OIL_RIG; break;
    02546     case STATION_DOCK:     str = STR_LAI_STATION_DESCRIPTION_SHIP_DOCK; break;
    02547     case STATION_BUOY:     str = STR_LAI_STATION_DESCRIPTION_BUOY; break;
    02548     case STATION_WAYPOINT: str = STR_LAI_STATION_DESCRIPTION_WAYPOINT; break;
    02549   }
    02550   td->str = str;
    02551 }
    02552
    02553
    02554 static TrackStatus GetTileTrackStatus_Station(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
    02555 {
    02556   TrackBits trackbits = TRACK_BIT_NONE;
    02557
    02558   switch (mode) {
    02559     case TRANSPORT_RAIL:
    02560       if (HasStationRail(tile) && !IsStationTileBlocked(tile)) {
    02561         trackbits = TrackToTrackBits(GetRailStationTrack(tile));
    02562       }
    02563       break;
    02564
    02565     case TRANSPORT_WATER:
    02566       /* buoy is coded as a station, it is always on open water */
    02567       if (IsBuoy(tile)) {
    02568         trackbits = TRACK_BIT_ALL;
    02569         /* remove tracks that connect NE map edge */
    02570         if (TileX(tile) == 0) trackbits &= ~(TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_RIGHT);
    02571         /* remove tracks that connect NW map edge */
    02572         if (TileY(tile) == 0) trackbits &= ~(TRACK_BIT_Y | TRACK_BIT_LEFT | TRACK_BIT_UPPER);
    02573       }
    02574       break;
    02575
    02576     case TRANSPORT_ROAD:
    02577       if ((GetRoadTypes(tile) & sub_mode) != 0 && IsRoadStop(tile)) {
    02578         DiagDirection dir = GetRoadStopDir(tile);
    02579         Axis axis = DiagDirToAxis(dir);
    02580
    02581         if (side != INVALID_DIAGDIR) {
    02582           if (axis != DiagDirToAxis(side) || (IsStandardRoadStopTile(tile) && dir != side)) break;
    02583         }
    02584
    02585         trackbits = AxisToTrackBits(axis);
    02586       }
    02587       break;
    02588
    02589     default:
    02590       break;
    02591   }
    02592
    02593   return CombineTrackStatus(TrackBitsToTrackdirBits(trackbits), TRACKDIR_BIT_NONE);
    02594 }
    02595
    02596
    02597 static void TileLoop_Station(TileIndex tile)
    02598 {
    02599   /* FIXME -- GetTileTrackStatus_Station -> animated stationtiles
    02600    * hardcoded.....not good */
    02601   switch (GetStationType(tile)) {
    02602     case STATION_AIRPORT:
    02603       if (AirportTileSpec::Get(GetStationGfx(tile))->anim_next != AIRPORTTILE_NOANIM) {
    02604         AddAnimatedTile(tile);
    02605       }
    02606       break;
    02607
    02608     case STATION_DOCK:
    02609       if (GetTileSlope(tile, NULL) != SLOPE_FLAT) break; // only handle water part
    02610     /* FALL THROUGH */
    02611     case STATION_OILRIG: //(station part)
    02612     case STATION_BUOY:
    02613       TileLoop_Water(tile);
    02614       break;
    02615
    02616     default: break;
    02617   }
    02618 }
    02619
    02620
    02621 static void AnimateTile_Station(TileIndex tile)
    02622 {
    02623   if (HasStationRail(tile)) {
    02624     AnimateStationTile(tile);
    02625     return;
    02626   }
    02627
    02628   if (IsAirport(tile)) {
    02629     const AirportTileSpec *ats = AirportTileSpec::Get(GetStationGfx(tile));
    02630     uint16 mask = (1 << ats->animation_speed) - 1;
    02631     if (ats->anim_next != AIRPORTTILE_NOANIM && (_tick_counter & mask) == 0) {
    02632       SetStationGfx(tile, ats->anim_next);
    02633       MarkTileDirtyByTile(tile);
    02634     }
    02635   }
    02636 }
    02637
    02638
    02639 static bool ClickTile_Station(TileIndex tile)
    02640 {
    02641   const BaseStation *st = BaseStation::GetByTile(tile);
    02642
    02643   if (st->facilities & FACIL_WAYPOINT) {
    02644     ShowWaypointWindow(Waypoint::From(st));
    02645   } else if (IsHangar(tile)) {
    02646     ShowDepotWindow(tile, VEH_AIRCRAFT);
    02647   } else {
    02648     ShowStationViewWindow(st->index);
    02649   }
    02650   return true;
    02651 }
    02652
    02653 static VehicleEnterTileStatus VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
    02654 {
    02655   if (v->type == VEH_TRAIN) {
    02656     StationID station_id = GetStationIndex(tile);
    02657     if (!v->current_order.ShouldStopAtStation(v, station_id)) return VETSB_CONTINUE;
    02658     if (!IsRailStation(tile) || !Train::From(v)->IsFrontEngine()) return VETSB_CONTINUE;
    02659
    02660     int station_ahead;
    02661     int station_length;
    02662     int stop = GetTrainStopLocation(station_id, tile, Train::From(v), &station_ahead, &station_length);
    02663
    02664     /* Stop whenever that amount of station ahead + the distance from the
    02665      * begin of the platform to the stop location is longer than the length
    02666      * of the platform. Station ahead 'includes' the current tile where the
    02667      * vehicle is on, so we need to substract that. */
    02668     if (!IsInsideBS(stop + station_ahead, station_length, TILE_SIZE)) return VETSB_CONTINUE;
    02669
    02670     DiagDirection dir = DirToDiagDir(v->direction);
    02671
    02672     x &= 0xF;
    02673     y &= 0xF;
    02674
    02675     if (DiagDirToAxis(dir) != AXIS_X) Swap(x, y);
    02676     if (y == TILE_SIZE / 2) {
    02677       if (dir != DIAGDIR_SE && dir != DIAGDIR_SW) x = TILE_SIZE - 1 - x;
    02678       stop &= TILE_SIZE - 1;
    02679
    02680       if (x == stop) return VETSB_ENTERED_STATION | (VehicleEnterTileStatus)(station_id << VETS_STATION_ID_OFFSET); // enter station
    02681       if (x < stop) {
    02682         uint16 spd;
    02683
    02684         v->vehstatus |= VS_TRAIN_SLOWING;
    02685         spd = max(0, (stop - x) * 20 - 15);
    02686         if (spd < v->cur_speed) v->cur_speed = spd;
    02687       }
    02688     }
    02689   } else if (v->type == VEH_ROAD) {
    02690     RoadVehicle *rv = RoadVehicle::From(v);
    02691     if (rv->state < RVSB_IN_ROAD_STOP && !IsReversingRoadTrackdir((Trackdir)rv->state) && rv->frame == 0) {
    02692       if (IsRoadStop(tile) && rv->IsRoadVehFront()) {
    02693         /* Attempt to allocate a parking bay in a road stop */
    02694         return RoadStop::GetByTile(tile, GetRoadStopType(tile))->Enter(rv) ? VETSB_CONTINUE : VETSB_CANNOT_ENTER;
    02695       }
    02696     }
    02697   }
    02698
    02699   return VETSB_CONTINUE;
    02700 }
    02701
    02708 static bool StationHandleBigTick(BaseStation *st)
    02709 {
    02710   if (!st->IsInUse() && ++st->delete_ctr >= 8) {
    02711     delete st;
    02712     return false;
    02713   }
    02714
    02715   if ((st->facilities & FACIL_WAYPOINT) == 0) UpdateStationAcceptance(Station::From(st), true);
    02716
    02717   return true;
    02718 }
    02719
    02720 static inline void byte_inc_sat(byte *p)
    02721 {
    02722   byte b = *p + 1;
    02723   if (b != 0) *p = b;
    02724 }
    02725
    02726 static void UpdateStationRating(Station *st)
    02727 {
    02728   bool waiting_changed = false;
    02729
    02730   byte_inc_sat(&st->time_since_load);
    02731   byte_inc_sat(&st->time_since_unload);
    02732
    02733   const CargoSpec *cs;
    02734   FOR_ALL_CARGOSPECS(cs) {
    02735     GoodsEntry *ge = &st->goods[cs->Index()];
    02736     /* Slowly increase the rating back to his original level in the case we
    02737      *  didn't deliver cargo yet to this station. This happens when a bribe
    02738      *  failed while you didn't moved that cargo yet to a station. */
    02739     if (!HasBit(ge->acceptance_pickup, GoodsEntry::PICKUP) && ge->rating < INITIAL_STATION_RATING) {
    02740       ge->rating++;
    02741     }
    02742
    02743     /* Only change the rating if we are moving this cargo */
    02744     if (HasBit(ge->acceptance_pickup, GoodsEntry::PICKUP)) {
    02745       byte_inc_sat(&ge->days_since_pickup);
    02746
    02747       bool skip = false;
    02748       int rating = 0;
    02749       uint waiting = ge->cargo.Count();
    02750
    02751       if (HasBit(cs->callback_mask, CBM_CARGO_STATION_RATING_CALC)) {
    02752         /* Perform custom station rating. If it succeeds the speed, days in transit and
    02753          * waiting cargo ratings must not be executed. */
    02754
    02755         /* NewGRFs expect last speed to be 0xFF when no vehicle has arrived yet. */
    02756         uint last_speed = ge->last_speed;
    02757         if (last_speed == 0) last_speed = 0xFF;
    02758
    02759         uint32 var18 = min(ge->days_since_pickup, 0xFF) | (min(waiting, 0xFFFF) << 8) | (min(last_speed, 0xFF) << 24);
    02760         /* Convert to the 'old' vehicle types */
    02761         uint32 var10 = (st->last_vehicle_type == VEH_INVALID) ? 0x0 : (st->last_vehicle_type + 0x10);
    02762         uint16 callback = GetCargoCallback(CBID_CARGO_STATION_RATING_CALC, var10, var18, cs);
    02763         if (callback != CALLBACK_FAILED) {
    02764           skip = true;
    02765           rating = GB(callback, 0, 14);
    02766
    02767           /* Simulate a 15 bit signed value */
    02768           if (HasBit(callback, 14)) rating -= 0x4000;
    02769         }
    02770       }
    02771
    02772       if (!skip) {
    02773         int b = ge->last_speed - 85;
    02774         if (b >= 0) rating += b >> 2;
    02775
    02776         byte days = ge->days_since_pickup;
    02777         if (st->last_vehicle_type == VEH_SHIP) days >>= 2;
    02778         (days > 21) ||
    02779         (rating += 25, days > 12) ||
    02780         (rating += 25, days > 6) ||
    02781         (rating += 45, days > 3) ||
    02782         (rating += 35, true);
    02783
    02784         (rating -= 90, waiting > 1500) ||
    02785         (rating += 55, waiting > 1000) ||
    02786         (rating += 35, waiting > 600) ||
    02787         (rating += 10, waiting > 300) ||
    02788         (rating += 20, waiting > 100) ||
    02789         (rating += 10, true);
    02790       }
    02791
    02792       if (Company::IsValidID(st->owner) && HasBit(st->town->statues, st->owner)) rating += 26;
    02793
    02794       byte age = ge->last_age;
    02795       (age >= 3) ||
    02796       (rating += 10, age >= 2) ||
    02797       (rating += 10, age >= 1) ||
    02798       (rating += 13, true);
    02799
    02800       {
    02801         int or_ = ge->rating; // old rating
    02802
    02803         /* only modify rating in steps of -2, -1, 0, 1 or 2 */
    02804         ge->rating = rating = or_ + Clamp(Clamp(rating, 0, 255) - or_, -2, 2);
    02805
    02806         /* if rating is <= 64 and more than 200 items waiting,
    02807          * remove some random amount of goods from the station */
    02808         if (rating <= 64 && waiting >= 200) {
    02809           int dec = Random() & 0x1F;
    02810           if (waiting < 400) dec &= 7;
    02811           waiting -= dec + 1;
    02812           waiting_changed = true;
    02813         }
    02814
    02815         /* if rating is <= 127 and there are any items waiting, maybe remove some goods. */
    02816         if (rating <= 127 && waiting != 0) {
    02817           uint32 r = Random();
    02818           if (rating <= (int)GB(r, 0, 7)) {
    02819             /* Need to have int, otherwise it will just overflow etc. */
    02820             waiting = max((int)waiting - (int)GB(r, 8, 2) - 1, 0);
    02821             waiting_changed = true;
    02822           }
    02823         }
    02824
    02825         /* At some point we really must cap the cargo. Previously this
    02826          * was a strict 4095, but now we'll have a less strict, but
    02827          * increasingly agressive truncation of the amount of cargo. */
    02828         static const uint WAITING_CARGO_THRESHOLD  = 1 << 12;
    02829         static const uint WAITING_CARGO_CUT_FACTOR = 1 <<  6;
    02830         static const uint MAX_WAITING_CARGO        = 1 << 15;
    02831
    02832         if (waiting > WAITING_CARGO_THRESHOLD) {
    02833           uint difference = waiting - WAITING_CARGO_THRESHOLD;
    02834           waiting -= (difference / WAITING_CARGO_CUT_FACTOR);
    02835
    02836           waiting = min(waiting, MAX_WAITING_CARGO);
    02837           waiting_changed = true;
    02838         }
    02839
    02840         if (waiting_changed) ge->cargo.Truncate(waiting);
    02841       }
    02842     }
    02843   }
    02844
    02845   StationID index = st->index;
    02846   if (waiting_changed) {
    02847     SetWindowDirty(WC_STATION_VIEW, index); // update whole window
    02848   } else {
    02849     SetWindowWidgetDirty(WC_STATION_VIEW, index, SVW_RATINGLIST); // update only ratings list
    02850   }
    02851 }
    02852
    02853 /* called for every station each tick */
    02854 static void StationHandleSmallTick(BaseStation *st)
    02855 {
    02856   if ((st->facilities & FACIL_WAYPOINT) != 0 || !st->IsInUse()) return;
    02857
    02858   byte b = st->delete_ctr + 1;
    02859   if (b >= 185) b = 0;
    02860   st->delete_ctr = b;
    02861
    02862   if (b == 0) UpdateStationRating(Station::From(st));
    02863 }
    02864
    02865 void OnTick_Station()
    02866 {
    02867   if (_game_mode == GM_EDITOR) return;
    02868
    02869   BaseStation *st;
    02870   FOR_ALL_BASE_STATIONS(st) {
    02871     StationHandleSmallTick(st);
    02872
    02873     /* Run 250 tick interval trigger for station animation.
    02874      * Station index is included so that triggers are not all done
    02875      * at the same time. */
    02876     if ((_tick_counter + st->index) % 250 == 0) {
    02877       /* Stop processing this station if it was deleted */
    02878       if (!StationHandleBigTick(st)) continue;
    02879       StationAnimationTrigger(st, st->xy, STAT_ANIM_250_TICKS);
    02880     }
    02881   }
    02882 }
    02883
    02884 void StationMonthlyLoop()
    02885 {
    02886   /* not used */
    02887 }
    02888
    02889
    02890 void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint radius)
    02891 {
    02892   Station *st;
    02893
    02894   FOR_ALL_STATIONS(st) {
    02895     if (st->owner == owner &&
    02896         DistanceManhattan(tile, st->xy) <= radius) {
    02897       for (CargoID i = 0; i < NUM_CARGO; i++) {
    02898         GoodsEntry *ge = &st->goods[i];
    02899
    02900         if (ge->acceptance_pickup != 0) {
    02901           ge->rating = Clamp(ge->rating + amount, 0, 255);
    02902         }
    02903       }
    02904     }
    02905   }
    02906 }
    02907
    02908 static void UpdateStationWaiting(Station *st, CargoID type, uint amount, SourceType source_type, SourceID source_id)
    02909 {
    02910   st->goods[type].cargo.Append(new CargoPacket(st->index, st->xy, amount, source_type, source_id));
    02911   SetBit(st->goods[type].acceptance_pickup, GoodsEntry::PICKUP);
    02912
    02913   StationAnimationTrigger(st, st->xy, STAT_ANIM_NEW_CARGO, type);
    02914
    02915   SetWindowDirty(WC_STATION_VIEW, st->index);
    02916   st->MarkTilesDirty(true);
    02917 }
    02918
    02919 static bool IsUniqueStationName(const char *name)
    02920 {
    02921   const Station *st;
    02922
    02923   FOR_ALL_STATIONS(st) {
    02924     if (st->name != NULL && strcmp(st->name, name) == 0) return false;
    02925   }
    02926
    02927   return true;
    02928 }
    02929
    02938 CommandCost CmdRenameStation(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02939 {
    02940   Station *st = Station::GetIfValid(p1);
    02941   if (st == NULL || !CheckOwnership(st->owner)) return CMD_ERROR;
    02942
    02943   bool reset = StrEmpty(text);
    02944
    02945   if (!reset) {
    02946     if (strlen(text) >= MAX_LENGTH_STATION_NAME_BYTES) return CMD_ERROR;
    02947     if (!IsUniqueStationName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
    02948   }
    02949
    02950   if (flags & DC_EXEC) {
    02951     free(st->name);
    02952     st->name = reset ? NULL : strdup(text);
    02953
    02954     st->UpdateVirtCoord();
    02955     InvalidateWindowData(WC_STATION_LIST, st->owner, 1);
    02956   }
    02957
    02958   return CommandCost();
    02959 }
    02960
    02967 void FindStationsAroundTiles(const TileArea &location, StationList *stations)
    02968 {
    02969   /* area to search = producer plus station catchment radius */
    02970   int max_rad = (_settings_game.station.modified_catchment ? MAX_CATCHMENT : CA_UNMODIFIED);
    02971
    02972   for (int dy = -max_rad; dy < location.h + max_rad; dy++) {
    02973     for (int dx = -max_rad; dx < location.w + max_rad; dx++) {
    02974       TileIndex cur_tile = TileAddWrap(location.tile, dx, dy);
    02975       if (cur_tile == INVALID_TILE || !IsTileType(cur_tile, MP_STATION)) continue;
    02976
    02977       Station *st = Station::GetByTile(cur_tile);
    02978       if (st == NULL) continue;
    02979
    02980       if (_settings_game.station.modified_catchment) {
    02981         int rad = st->GetCatchmentRadius();
    02982         if (dx < -rad || dx >= rad + location.w || dy < -rad || dy >= rad + location.h) continue;
    02983       }
    02984
    02985       /* Insert the station in the set. This will fail if it has
    02986        * already been added.
    02987        */
    02988       stations->Include(st);
    02989     }
    02990   }
    02991 }
    02992
    02997 const StationList *StationFinder::GetStations()
    02998 {
    02999   if (this->tile != INVALID_TILE) {
    03000     FindStationsAroundTiles(*this, &this->stations);
    03001     this->tile = INVALID_TILE;
    03002   }
    03003   return &this->stations;
    03004 }
    03005
    03006 uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations)
    03007 {
    03008   /* Return if nothing to do. Also the rounding below fails for 0. */
    03009   if (amount == 0) return 0;
    03010
    03011   Station *st1 = NULL;   // Station with best rating
    03012   Station *st2 = NULL;   // Second best station
    03013   uint best_rating1 = 0; // rating of st1
    03014   uint best_rating2 = 0; // rating of st2
    03015
    03016   for (Station * const *st_iter = all_stations->Begin(); st_iter != all_stations->End(); ++st_iter) {
    03017     Station *st = *st_iter;
    03018
    03019     /* Is the station reserved exclusively for somebody else? */
    03020     if (st->town->exclusive_counter > 0 && st->town->exclusivity != st->owner) continue;
    03021
    03022     if (st->goods[type].rating == 0) continue; // Lowest possible rating, better not to give cargo anymore
    03023
    03024     if (_settings_game.order.selectgoods && st->goods[type].last_speed == 0) continue; // Selectively servicing stations, and not this one
    03025
    03026     if (IsCargoInClass(type, CC_PASSENGERS)) {
    03027       if (st->facilities == FACIL_TRUCK_STOP) continue; // passengers are never served by just a truck stop
    03028     } else {
    03029       if (st->facilities == FACIL_BUS_STOP) continue; // non-passengers are never served by just a bus stop
    03030     }
    03031
    03032     /* This station can be used, add it to st1/st2 */
    03033     if (st1 == NULL || st->goods[type].rating >= best_rating1) {
    03034       st2 = st1; best_rating2 = best_rating1; st1 = st; best_rating1 = st->goods[type].rating;
    03035     } else if (st2 == NULL || st->goods[type].rating >= best_rating2) {
    03036       st2 = st; best_rating2 = st->goods[type].rating;
    03037     }
    03038   }
    03039
    03040   /* no stations around at all? */
    03041   if (st1 == NULL) return 0;
    03042
    03043   if (st2 == NULL) {
    03044     /* only one station around */
    03045     uint moved = amount * best_rating1 / 256 + 1;
    03046     UpdateStationWaiting(st1, type, moved, source_type, source_id);
    03047     return moved;
    03048   }
    03049
    03050   /* several stations around, the best two (highest rating) are in st1 and st2 */
    03051   assert(st1 != NULL);
    03052   assert(st2 != NULL);
    03053   assert(best_rating1 != 0 || best_rating2 != 0);
    03054
    03055   /* the 2nd highest one gets a penalty */
    03056   best_rating2 >>= 1;
    03057
    03058   /* amount given to station 1 */
    03059   uint t = (best_rating1 * (amount + 1)) / (best_rating1 + best_rating2);
    03060
    03061   uint moved = 0;
    03062   if (t != 0) {
    03063     moved = t * best_rating1 / 256 + 1;
    03064     amount -= t;
    03065     UpdateStationWaiting(st1, type, moved, source_type, source_id);
    03066   }
    03067
    03068   if (amount != 0) {
    03069     amount = amount * best_rating2 / 256 + 1;
    03070     moved += amount;
    03071     UpdateStationWaiting(st2, type, amount, source_type, source_id);
    03072   }
    03073
    03074   return moved;
    03075 }
    03076
    03077 void BuildOilRig(TileIndex tile)
    03078 {
    03079   if (!Station::CanAllocateItem()) {
    03080     DEBUG(misc, 0, "Can't allocate station for oilrig at 0x%X, reverting to oilrig only", tile);
    03081     return;
    03082   }
    03083
    03084   Station *st = new Station(tile);
    03085   st->town = ClosestTownFromTile(tile, UINT_MAX);
    03086
    03087   st->string_id = GenerateStationName(st, tile, STATIONNAMING_OILRIG);
    03088
    03089   assert(IsTileType(tile, MP_INDUSTRY));
    03090   DeleteAnimatedTile(tile);
    03091   MakeOilrig(tile, st->index, GetWaterClass(tile));
    03092
    03093   st->owner = OWNER_NONE;
    03094   st->airport_type = AT_OILRIG;
    03095   st->airport_tile = tile;
    03096   st->dock_tile = tile;
    03097   st->facilities = FACIL_AIRPORT | FACIL_DOCK;
    03098   st->build_date = _date;
    03099
    03100   st->rect.BeforeAddTile(tile, StationRect::ADD_FORCE);
    03101
    03102   for (CargoID j = 0; j < NUM_CARGO; j++) {
    03103     st->goods[j].acceptance_pickup = 0;
    03104     st->goods[j].days_since_pickup = 255;
    03105     st->goods[j].rating = INITIAL_STATION_RATING;
    03106     st->goods[j].last_speed = 0;
    03107     st->goods[j].last_age = 255;
    03108   }
    03109
    03110   st->UpdateVirtCoord();
    03111   UpdateStationAcceptance(st, false);
    03112   st->RecomputeIndustriesNear();
    03113 }
    03114
    03115 void DeleteOilRig(TileIndex tile)
    03116 {
    03117   Station *st = Station::GetByTile(tile);
    03118
    03119   MakeWaterKeepingClass(tile, OWNER_NONE);
    03120   MarkTileDirtyByTile(tile);
    03121
    03122   st->dock_tile = INVALID_TILE;
    03123   st->airport_tile = INVALID_TILE;
    03124   st->facilities &= ~(FACIL_AIRPORT | FACIL_DOCK);
    03125   st->airport_flags = 0;
    03126
    03127   st->rect.AfterRemoveTile(st, tile);
    03128
    03129   st->UpdateVirtCoord();
    03130   st->RecomputeIndustriesNear();
    03131   if (!st->IsInUse()) delete st;
    03132 }
    03133
    03134 static void ChangeTileOwner_Station(TileIndex tile, Owner old_owner, Owner new_owner)
    03135 {
    03136   if (IsDriveThroughStopTile(tile)) {
    03137     for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
    03138       /* Update all roadtypes, no matter if they are present */
    03139       if (GetRoadOwner(tile, rt) == old_owner) {
    03140         SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
    03141       }
    03142     }
    03143   }
    03144
    03145   if (!IsTileOwner(tile, old_owner)) return;
    03146
    03147   if (new_owner != INVALID_OWNER) {
    03148     /* for buoys, owner of tile is owner of water, st->owner == OWNER_NONE */
    03149     SetTileOwner(tile, new_owner);
    03150     InvalidateWindowClassesData(WC_STATION_LIST, 0);
    03151   } else {
    03152     if (IsDriveThroughStopTile(tile)) {
    03153       /* Remove the drive-through road stop */
    03154       DoCommand(tile, 0, (GetStationType(tile) == STATION_TRUCK) ? ROADSTOP_TRUCK : ROADSTOP_BUS, DC_EXEC | DC_BANKRUPT, CMD_REMOVE_ROAD_STOP);
    03155       assert(IsTileType(tile, MP_ROAD));
    03156       /* Change owner of tile and all roadtypes */
    03157       ChangeTileOwner(tile, old_owner, new_owner);
    03158     } else {
    03159       DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
    03160       /* Set tile owner of water under (now removed) buoy and dock to OWNER_NONE.
    03161        * Update owner of buoy if it was not removed (was in orders).
    03162        * Do not update when owned by OWNER_WATER (sea and rivers). */
    03163       if ((IsTileType(tile, MP_WATER) || IsBuoyTile(tile)) && IsTileOwner(tile, old_owner)) SetTileOwner(tile, OWNER_NONE);
    03164     }
    03165   }
    03166 }
    03167
    03176 static bool CanRemoveRoadWithStop(TileIndex tile, DoCommandFlag flags)
    03177 {
    03178   /* Yeah... water can always remove stops, right? */
    03179   if (_current_company == OWNER_WATER) return true;
    03180
    03181   Owner road_owner = _current_company;
    03182   Owner tram_owner = _current_company;
    03183
    03184   RoadTypes rts = GetRoadTypes(tile);
    03185   if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    03186   if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    03187
    03188   if ((road_owner != OWNER_TOWN && !CheckOwnership(road_owner)) || !CheckOwnership(tram_owner)) return false;
    03189
    03190   return road_owner != OWNER_TOWN || CheckAllowRemoveRoad(tile, GetAnyRoadBits(tile, ROADTYPE_ROAD), OWNER_TOWN, ROADTYPE_ROAD, flags);
    03191 }
    03192
    03193 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags)
    03194 {
    03195   if (flags & DC_AUTO) {
    03196     switch (GetStationType(tile)) {
    03197       default: break;
    03198       case STATION_RAIL:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_RAILROAD);
    03199       case STATION_WAYPOINT: return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
    03200       case STATION_AIRPORT:  return_cmd_error(STR_ERROR_MUST_DEMOLISH_AIRPORT_FIRST);
    03201       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);
    03202       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);
    03203       case STATION_BUOY:     return_cmd_error(STR_ERROR_BUOY_IN_THE_WAY);
    03204       case STATION_DOCK:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_DOCK_FIRST);
    03205       case STATION_OILRIG:
    03206         SetDParam(0, STR_INDUSTRY_NAME_OIL_RIG);
    03207         return_cmd_error(STR_ERROR_UNMOVABLE_OBJECT_IN_THE_WAY);
    03208     }
    03209   }
    03210
    03211   switch (GetStationType(tile)) {
    03212     case STATION_RAIL:     return RemoveRailStation(tile, flags);
    03213     case STATION_WAYPOINT: return RemoveRailWaypoint(tile, flags);
    03214     case STATION_AIRPORT:  return RemoveAirport(tile, flags);
    03215     case STATION_TRUCK:
    03216       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags))
    03217         return_cmd_error(STR_ERROR_MUST_DEMOLISH_TRUCK_STATION_FIRST);
    03218       return RemoveRoadStop(tile, flags);
    03219     case STATION_BUS:
    03220       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags))
    03221         return_cmd_error(STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST);
    03222       return RemoveRoadStop(tile, flags);
    03223     case STATION_BUOY:     return RemoveBuoy(tile, flags);
    03224     case STATION_DOCK:     return RemoveDock(tile, flags);
    03225     default: break;
    03226   }
    03227
    03228   return CMD_ERROR;
    03229 }
    03230
    03231 static CommandCost TerraformTile_Station(TileIndex tile, DoCommandFlag flags, uint z_new, Slope tileh_new)
    03232 {
    03233   if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
    03234     /* TODO: If you implement newgrf callback 149 'land slope check', you have to decide what to do with it here.
    03235      *       TTDP does not call it.
    03236      */
    03237     if (!IsSteepSlope(tileh_new) && (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new))) {
    03238       switch (GetStationType(tile)) {
    03239         case STATION_WAYPOINT:
    03240         case STATION_RAIL: {
    03241           DiagDirection direction = AxisToDiagDir(GetRailStationAxis(tile));
    03242           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03243           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03244           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03245         }
    03246
    03247         case STATION_AIRPORT:
    03248           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03249
    03250         case STATION_TRUCK:
    03251         case STATION_BUS: {
    03252           DiagDirection direction = GetRoadStopDir(tile);
    03253           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03254           if (IsDriveThroughStopTile(tile)) {
    03255             if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03256           }
    03257           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03258         }
    03259
    03260         default: break;
    03261       }
    03262     }
    03263   }
    03264   return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    03265 }
    03266
    03267
    03268 extern const TileTypeProcs _tile_type_station_procs = {
    03269   DrawTile_Station,           // draw_tile_proc
    03270   GetSlopeZ_Station,          // get_slope_z_proc
    03271   ClearTile_Station,          // clear_tile_proc
    03272   NULL,                       // add_accepted_cargo_proc
    03273   GetTileDesc_Station,        // get_tile_desc_proc
    03274   GetTileTrackStatus_Station, // get_tile_track_status_proc
    03275   ClickTile_Station,          // click_tile_proc
    03276   AnimateTile_Station,        // animate_tile_proc
    03277   TileLoop_Station,           // tile_loop_clear
    03278   ChangeTileOwner_Station,    // change_tile_owner_clear
    03279   NULL,                       // add_produced_cargo_proc
    03280   VehicleEnter_Station,       // vehicle_enter_tile_proc
    03281   GetFoundation_Station,      // get_foundation_proc
    03282   TerraformTile_Station,      // terraform_tile_proc
    03283 };