# station_cmd.cpp

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    00001 /* $Id: station_cmd.cpp 18921 2010-01-26 23:03:47Z yexo $ */
    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 #include "table/airporttile_ids.h"
    00050
    00051 #include "table/strings.h"
    00052
    00059 bool IsHangar(TileIndex t)
    00060 {
    00061   assert(IsTileType(t, MP_STATION));
    00062
    00063   /* If the tile isn't an airport there's no chance it's a hangar. */
    00064   if (!IsAirport(t)) return false;
    00065
    00066   const Station *st = Station::GetByTile(t);
    00067   const AirportSpec *as = st->GetAirportSpec();
    00068
    00069   for (uint i = 0; i < as->nof_depots; i++) {
    00070     if (st->GetHangarTile(i) == t) return true;
    00071   }
    00072
    00073   return false;
    00074 }
    00075
    00083 template <class T>
    00084 bool GetStationAround(TileArea ta, StationID closest_station, T **st)
    00085 {
    00086   /* check around to see if there's any stations there */
    00087   TILE_LOOP(tile_cur, ta.w + 2, ta.h + 2, ta.tile - TileDiffXY(1, 1)) {
    00088     if (IsTileType(tile_cur, MP_STATION)) {
    00089       StationID t = GetStationIndex(tile_cur);
    00090
    00091       if (closest_station == INVALID_STATION) {
    00092         if (T::IsValidID(t)) closest_station = t;
    00093       } else if (closest_station != t) {
    00094         _error_message = STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING;
    00095         return false;
    00096       }
    00097     }
    00098   }
    00099   *st = (closest_station == INVALID_STATION) ? NULL : T::Get(closest_station);
    00100   return true;
    00101 }
    00102
    00108 typedef bool (*CMSAMatcher)(TileIndex tile);
    00109
    00116 static int CountMapSquareAround(TileIndex tile, CMSAMatcher cmp)
    00117 {
    00118   int num = 0;
    00119
    00120   for (int dx = -3; dx <= 3; dx++) {
    00121     for (int dy = -3; dy <= 3; dy++) {
    00122       TileIndex t = TileAddWrap(tile, dx, dy);
    00123       if (t != INVALID_TILE && cmp(t)) num++;
    00124     }
    00125   }
    00126
    00127   return num;
    00128 }
    00129
    00135 static bool CMSAMine(TileIndex tile)
    00136 {
    00137   /* No industry */
    00138   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00139
    00140   const Industry *ind = Industry::GetByTile(tile);
    00141
    00142   /* No extractive industry */
    00143   if ((GetIndustrySpec(ind->type)->life_type & INDUSTRYLIFE_EXTRACTIVE) == 0) return false;
    00144
    00145   for (uint i = 0; i < lengthof(ind->produced_cargo); i++) {
    00146     /* The industry extracts something non-liquid, i.e. no oil or plastic, so it is a mine.
    00147      * Also the production of passengers and mail is ignored. */
    00148     if (ind->produced_cargo[i] != CT_INVALID &&
    00149         (CargoSpec::Get(ind->produced_cargo[i])->classes & (CC_LIQUID | CC_PASSENGERS | CC_MAIL)) == 0) {
    00150       return true;
    00151     }
    00152   }
    00153
    00154   return false;
    00155 }
    00156
    00162 static bool CMSAWater(TileIndex tile)
    00163 {
    00164   return IsTileType(tile, MP_WATER) && IsWater(tile);
    00165 }
    00166
    00172 static bool CMSATree(TileIndex tile)
    00173 {
    00174   return IsTileType(tile, MP_TREES);
    00175 }
    00176
    00182 static bool CMSAForest(TileIndex tile)
    00183 {
    00184   /* No industry */
    00185   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00186
    00187   const Industry *ind = Industry::GetByTile(tile);
    00188
    00189   /* No extractive industry */
    00190   if ((GetIndustrySpec(ind->type)->life_type & INDUSTRYLIFE_ORGANIC) == 0) return false;
    00191
    00192   for (uint i = 0; i < lengthof(ind->produced_cargo); i++) {
    00193     /* The industry produces wood. */
    00194     if (ind->produced_cargo[i] != CT_INVALID && CargoSpec::Get(ind->produced_cargo[i])->label == 'WOOD') return true;
    00195   }
    00196
    00197   return false;
    00198 }
    00199
    00200 #define M(x) ((x) - STR_SV_STNAME)
    00201
    00202 enum StationNaming {
    00203   STATIONNAMING_RAIL,
    00204   STATIONNAMING_ROAD,
    00205   STATIONNAMING_AIRPORT,
    00206   STATIONNAMING_OILRIG,
    00207   STATIONNAMING_DOCK,
    00208   STATIONNAMING_HELIPORT,
    00209 };
    00210
    00212 struct StationNameInformation {
    00213   uint32 free_names;
    00214   bool *indtypes;
    00215 };
    00216
    00225 static bool FindNearIndustryName(TileIndex tile, void *user_data)
    00226 {
    00227   /* All already found industry types */
    00228   StationNameInformation *sni = (StationNameInformation*)user_data;
    00229   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00230
    00231   /* If the station name is undefined it means that it doesn't name a station */
    00232   IndustryType indtype = GetIndustryType(tile);
    00233   if (GetIndustrySpec(indtype)->station_name == STR_UNDEFINED) return false;
    00234
    00235   /* In all cases if an industry that provides a name is found two of
    00236    * the standard names will be disabled. */
    00237   sni->free_names &= ~(1 << M(STR_SV_STNAME_OILFIELD) | 1 << M(STR_SV_STNAME_MINES));
    00238   return !sni->indtypes[indtype];
    00239 }
    00240
    00241 static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming name_class)
    00242 {
    00243   static const uint32 _gen_station_name_bits[] = {
    00244     0,                                       // STATIONNAMING_RAIL
    00245     0,                                       // STATIONNAMING_ROAD
    00246     1U << M(STR_SV_STNAME_AIRPORT),          // STATIONNAMING_AIRPORT
    00247     1U << M(STR_SV_STNAME_OILFIELD),         // STATIONNAMING_OILRIG
    00248     1U << M(STR_SV_STNAME_DOCKS),            // STATIONNAMING_DOCK
    00249     1U << M(STR_SV_STNAME_HELIPORT),         // STATIONNAMING_HELIPORT
    00250   };
    00251
    00252   const Town *t = st->town;
    00253   uint32 free_names = UINT32_MAX;
    00254
    00255   bool indtypes[NUM_INDUSTRYTYPES];
    00256   memset(indtypes, 0, sizeof(indtypes));
    00257
    00258   const Station *s;
    00259   FOR_ALL_STATIONS(s) {
    00260     if (s != st && s->town == t) {
    00261       if (s->indtype != IT_INVALID) {
    00262         indtypes[s->indtype] = true;
    00263         continue;
    00264       }
    00265       uint str = M(s->string_id);
    00266       if (str <= 0x20) {
    00267         if (str == M(STR_SV_STNAME_FOREST)) {
    00268           str = M(STR_SV_STNAME_WOODS);
    00269         }
    00270         ClrBit(free_names, str);
    00271       }
    00272     }
    00273   }
    00274
    00275   TileIndex indtile = tile;
    00276   StationNameInformation sni = { free_names, indtypes };
    00277   if (CircularTileSearch(&indtile, 7, FindNearIndustryName, &sni)) {
    00278     /* An industry has been found nearby */
    00279     IndustryType indtype = GetIndustryType(indtile);
    00280     const IndustrySpec *indsp = GetIndustrySpec(indtype);
    00281     /* STR_NULL means it only disables oil rig/mines */
    00282     if (indsp->station_name != STR_NULL) {
    00283       st->indtype = indtype;
    00284       return STR_SV_STNAME_FALLBACK;
    00285     }
    00286   }
    00287
    00288   /* Oil rigs/mines name could be marked not free by looking for a near by industry. */
    00289   free_names = sni.free_names;
    00290
    00291   /* check default names */
    00292   uint32 tmp = free_names & _gen_station_name_bits[name_class];
    00293   if (tmp != 0) return STR_SV_STNAME + FindFirstBit(tmp);
    00294
    00295   /* check mine? */
    00296   if (HasBit(free_names, M(STR_SV_STNAME_MINES))) {
    00297     if (CountMapSquareAround(tile, CMSAMine) >= 2) {
    00298       return STR_SV_STNAME_MINES;
    00299     }
    00300   }
    00301
    00302   /* check close enough to town to get central as name? */
    00303   if (DistanceMax(tile, t->xy) < 8) {
    00304     if (HasBit(free_names, M(STR_SV_STNAME))) return STR_SV_STNAME;
    00305
    00306     if (HasBit(free_names, M(STR_SV_STNAME_CENTRAL))) return STR_SV_STNAME_CENTRAL;
    00307   }
    00308
    00309   /* Check lakeside */
    00310   if (HasBit(free_names, M(STR_SV_STNAME_LAKESIDE)) &&
    00311       DistanceFromEdge(tile) < 20 &&
    00312       CountMapSquareAround(tile, CMSAWater) >= 5) {
    00313     return STR_SV_STNAME_LAKESIDE;
    00314   }
    00315
    00316   /* Check woods */
    00317   if (HasBit(free_names, M(STR_SV_STNAME_WOODS)) && (
    00318         CountMapSquareAround(tile, CMSATree) >= 8 ||
    00319         CountMapSquareAround(tile, CMSAForest) >= 2)
    00320       ) {
    00321     return _settings_game.game_creation.landscape == LT_TROPIC ? STR_SV_STNAME_FOREST : STR_SV_STNAME_WOODS;
    00322   }
    00323
    00324   /* check elevation compared to town */
    00325   uint z = GetTileZ(tile);
    00326   uint z2 = GetTileZ(t->xy);
    00327   if (z < z2) {
    00328     if (HasBit(free_names, M(STR_SV_STNAME_VALLEY))) return STR_SV_STNAME_VALLEY;
    00329   } else if (z > z2) {
    00330     if (HasBit(free_names, M(STR_SV_STNAME_HEIGHTS))) return STR_SV_STNAME_HEIGHTS;
    00331   }
    00332
    00333   /* check direction compared to town */
    00334   static const int8 _direction_and_table[] = {
    00335     ~( (1 << M(STR_SV_STNAME_WEST))  | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00336     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00337     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00338     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_EAST)) ),
    00339   };
    00340
    00341   free_names &= _direction_and_table[
    00342     (TileX(tile) < TileX(t->xy)) +
    00343     (TileY(tile) < TileY(t->xy)) * 2];
    00344
    00345   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));
    00346   return (tmp == 0) ? STR_SV_STNAME_FALLBACK : (STR_SV_STNAME + FindFirstBit(tmp));
    00347 }
    00348 #undef M
    00349
    00355 static Station *GetClosestDeletedStation(TileIndex tile)
    00356 {
    00357   uint threshold = 8;
    00358   Station *best_station = NULL;
    00359   Station *st;
    00360
    00361   FOR_ALL_STATIONS(st) {
    00362     if (!st->IsInUse() && st->owner == _current_company) {
    00363       uint cur_dist = DistanceManhattan(tile, st->xy);
    00364
    00365       if (cur_dist < threshold) {
    00366         threshold = cur_dist;
    00367         best_station = st;
    00368       }
    00369     }
    00370   }
    00371
    00372   return best_station;
    00373 }
    00374
    00375
    00376 void Station::GetTileArea(TileArea *ta, StationType type) const
    00377 {
    00378   switch (type) {
    00379     case STATION_RAIL:
    00380       *ta = this->train_station;
    00381       return;
    00382
    00383     case STATION_AIRPORT:
    00384       ta->tile = this->airport_tile;
    00385       ta->w    = this->GetAirportSpec()->size_x;
    00386       ta->h    = this->GetAirportSpec()->size_y;
    00387       return;
    00388
    00389     case STATION_TRUCK:
    00390       *ta = this->truck_station;
    00391       return;
    00392
    00393     case STATION_BUS:
    00394       *ta = this->bus_station;
    00395       return;
    00396
    00397     case STATION_DOCK:
    00398     case STATION_OILRIG:
    00399       ta->tile = this->dock_tile;
    00400       break;
    00401
    00402     default: NOT_REACHED();
    00403   }
    00404
    00405   ta->w = 1;
    00406   ta->h = 1;
    00407 }
    00408
    00412 void Station::UpdateVirtCoord()
    00413 {
    00414   Point pt = RemapCoords2(TileX(this->xy) * TILE_SIZE, TileY(this->xy) * TILE_SIZE);
    00415
    00416   pt.y -= 32;
    00417   if ((this->facilities & FACIL_AIRPORT) && this->airport_type == AT_OILRIG) pt.y -= 16;
    00418
    00419   SetDParam(0, this->index);
    00420   SetDParam(1, this->facilities);
    00421   this->sign.UpdatePosition(pt.x, pt.y, STR_VIEWPORT_STATION);
    00422
    00423   SetWindowDirty(WC_STATION_VIEW, this->index);
    00424 }
    00425
    00427 void UpdateAllStationVirtCoords()
    00428 {
    00429   BaseStation *st;
    00430
    00431   FOR_ALL_BASE_STATIONS(st) {
    00432     st->UpdateVirtCoord();
    00433   }
    00434 }
    00435
    00440 static uint GetAcceptanceMask(const Station *st)
    00441 {
    00442   uint mask = 0;
    00443
    00444   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00445     if (HasBit(st->goods[i].acceptance_pickup, GoodsEntry::ACCEPTANCE)) mask |= 1 << i;
    00446   }
    00447   return mask;
    00448 }
    00449
    00453 static void ShowRejectOrAcceptNews(const Station *st, uint num_items, CargoID *cargo, StringID msg)
    00454 {
    00455   for (uint i = 0; i < num_items; i++) {
    00456     SetDParam(i + 1, CargoSpec::Get(cargo[i])->name);
    00457   }
    00458
    00459   SetDParam(0, st->index);
    00460   AddNewsItem(msg, NS_ACCEPTANCE, NR_STATION, st->index);
    00461 }
    00462
    00470 CargoArray GetProductionAroundTiles(TileIndex tile, int w, int h, int rad)
    00471 {
    00472   CargoArray produced;
    00473
    00474   int x = TileX(tile);
    00475   int y = TileY(tile);
    00476
    00477   /* expand the region by rad tiles on each side
    00478    * while making sure that we remain inside the board. */
    00479   int x2 = min(x + w + rad, MapSizeX());
    00480   int x1 = max(x - rad, 0);
    00481
    00482   int y2 = min(y + h + rad, MapSizeY());
    00483   int y1 = max(y - rad, 0);
    00484
    00485   assert(x1 < x2);
    00486   assert(y1 < y2);
    00487   assert(w > 0);
    00488   assert(h > 0);
    00489
    00490   TileArea ta(TileXY(x1, y1), TileXY(x2 - 1, y2 - 1));
    00491
    00492   /* Loop over all tiles to get the produced cargo of
    00493    * everything except industries */
    00494   TILE_AREA_LOOP(tile, ta) AddProducedCargo(tile, produced);
    00495
    00496   /* Loop over the industries. They produce cargo for
    00497    * anything that is within 'rad' from their bounding
    00498    * box. As such if you have e.g. a oil well the tile
    00499    * area loop might not hit an industry tile while
    00500    * the industry would produce cargo for the station.
    00501    */
    00502   const Industry *i;
    00503   FOR_ALL_INDUSTRIES(i) {
    00504     if (!ta.Intersects(i->location)) continue;
    00505
    00506     for (uint j = 0; j < lengthof(i->produced_cargo); j++) {
    00507       CargoID cargo = i->produced_cargo[j];
    00508       if (cargo != CT_INVALID) produced[cargo]++;
    00509     }
    00510   }
    00511
    00512   return produced;
    00513 }
    00514
    00523 CargoArray GetAcceptanceAroundTiles(TileIndex tile, int w, int h, int rad, uint32 *always_accepted)
    00524 {
    00525   CargoArray acceptance;
    00526   if (always_accepted != NULL) *always_accepted = 0;
    00527
    00528   int x = TileX(tile);
    00529   int y = TileY(tile);
    00530
    00531   /* expand the region by rad tiles on each side
    00532    * while making sure that we remain inside the board. */
    00533   int x2 = min(x + w + rad, MapSizeX());
    00534   int y2 = min(y + h + rad, MapSizeY());
    00535   int x1 = max(x - rad, 0);
    00536   int y1 = max(y - rad, 0);
    00537
    00538   assert(x1 < x2);
    00539   assert(y1 < y2);
    00540   assert(w > 0);
    00541   assert(h > 0);
    00542
    00543   for (int yc = y1; yc != y2; yc++) {
    00544     for (int xc = x1; xc != x2; xc++) {
    00545       TileIndex tile = TileXY(xc, yc);
    00546       AddAcceptedCargo(tile, acceptance, always_accepted);
    00547     }
    00548   }
    00549
    00550   return acceptance;
    00551 }
    00552
    00557 void UpdateStationAcceptance(Station *st, bool show_msg)
    00558 {
    00559   /* old accepted goods types */
    00560   uint old_acc = GetAcceptanceMask(st);
    00561
    00562   /* And retrieve the acceptance. */
    00563   CargoArray acceptance;
    00564   if (!st->rect.IsEmpty()) {
    00565     acceptance = GetAcceptanceAroundTiles(
    00566       TileXY(st->rect.left, st->rect.top),
    00567       st->rect.right  - st->rect.left + 1,
    00568       st->rect.bottom - st->rect.top  + 1,
    00569       st->GetCatchmentRadius(),
    00570       &st->always_accepted
    00571     );
    00572   }
    00573
    00574   /* Adjust in case our station only accepts fewer kinds of goods */
    00575   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00576     uint amt = min(acceptance[i], 15);
    00577
    00578     /* Make sure the station can accept the goods type. */
    00579     bool is_passengers = IsCargoInClass(i, CC_PASSENGERS);
    00580     if ((!is_passengers && !(st->facilities & ~FACIL_BUS_STOP)) ||
    00581         (is_passengers && !(st->facilities & ~FACIL_TRUCK_STOP))) {
    00582       amt = 0;
    00583     }
    00584
    00585     SB(st->goods[i].acceptance_pickup, GoodsEntry::ACCEPTANCE, 1, amt >= 8);
    00586   }
    00587
    00588   /* Only show a message in case the acceptance was actually changed. */
    00589   uint new_acc = GetAcceptanceMask(st);
    00590   if (old_acc == new_acc) return;
    00591
    00592   /* show a message to report that the acceptance was changed? */
    00593   if (show_msg && st->owner == _local_company && st->IsInUse()) {
    00594     /* List of accept and reject strings for different number of
    00595      * cargo types */
    00596     static const StringID accept_msg[] = {
    00597       STR_NEWS_STATION_NOW_ACCEPTS_CARGO,
    00598       STR_NEWS_STATION_NOW_ACCEPTS_CARGO_AND_CARGO,
    00599     };
    00600     static const StringID reject_msg[] = {
    00601       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO,
    00602       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO_OR_CARGO,
    00603     };
    00604
    00605     /* Array of accepted and rejected cargo types */
    00606     CargoID accepts[2] = { CT_INVALID, CT_INVALID };
    00607     CargoID rejects[2] = { CT_INVALID, CT_INVALID };
    00608     uint num_acc = 0;
    00609     uint num_rej = 0;
    00610
    00611     /* Test each cargo type to see if its acceptange has changed */
    00612     for (CargoID i = 0; i < NUM_CARGO; i++) {
    00613       if (HasBit(new_acc, i)) {
    00614         if (!HasBit(old_acc, i) && num_acc < lengthof(accepts)) {
    00615           /* New cargo is accepted */
    00616           accepts[num_acc++] = i;
    00617         }
    00618       } else {
    00619         if (HasBit(old_acc, i) && num_rej < lengthof(rejects)) {
    00620           /* Old cargo is no longer accepted */
    00621           rejects[num_rej++] = i;
    00622         }
    00623       }
    00624     }
    00625
    00626     /* Show news message if there are any changes */
    00627     if (num_acc > 0) ShowRejectOrAcceptNews(st, num_acc, accepts, accept_msg[num_acc - 1]);
    00628     if (num_rej > 0) ShowRejectOrAcceptNews(st, num_rej, rejects, reject_msg[num_rej - 1]);
    00629   }
    00630
    00631   /* redraw the station view since acceptance changed */
    00632   SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_ACCEPTLIST);
    00633 }
    00634
    00635 static void UpdateStationSignCoord(BaseStation *st)
    00636 {
    00637   const StationRect *r = &st->rect;
    00638
    00639   if (r->IsEmpty()) return; // no tiles belong to this station
    00640
    00641   /* clamp sign coord to be inside the station rect */
    00642   st->xy = TileXY(ClampU(TileX(st->xy), r->left, r->right), ClampU(TileY(st->xy), r->top, r->bottom));
    00643   st->UpdateVirtCoord();
    00644 }
    00645
    00651 static void DeleteStationIfEmpty(BaseStation *st)
    00652 {
    00653   if (!st->IsInUse()) {
    00654     st->delete_ctr = 0;
    00655     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    00656   }
    00657   /* station remains but it probably lost some parts - station sign should stay in the station boundaries */
    00658   UpdateStationSignCoord(st);
    00659 }
    00660
    00661 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags);
    00662
    00674 CommandCost CheckFlatLandBelow(TileIndex tile, uint w, uint h, DoCommandFlag flags, uint invalid_dirs, StationID *station, bool check_clear = true, RailType rt = INVALID_RAILTYPE)
    00675 {
    00676   CommandCost cost(EXPENSES_CONSTRUCTION);
    00677   int allowed_z = -1;
    00678
    00679   TILE_LOOP(tile_cur, w, h, tile) {
    00680     if (MayHaveBridgeAbove(tile_cur) && IsBridgeAbove(tile_cur)) {
    00681       return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    00682     }
    00683
    00684     if (!EnsureNoVehicleOnGround(tile_cur)) return CMD_ERROR;
    00685
    00686     uint z;
    00687     Slope tileh = GetTileSlope(tile_cur, &z);
    00688
    00689     /* Prohibit building if
    00690      *   1) The tile is "steep" (i.e. stretches two height levels)
    00691      *   2) The tile is non-flat and the build_on_slopes switch is disabled
    00692      */
    00693     if (IsSteepSlope(tileh) ||
    00694         ((!_settings_game.construction.build_on_slopes) && tileh != SLOPE_FLAT)) {
    00695       return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00696     }
    00697
    00698     int flat_z = z;
    00699     if (tileh != SLOPE_FLAT) {
    00700       /* need to check so the entrance to the station is not pointing at a slope.
    00701        * This must be valid for all station tiles, as the user can remove single station tiles. */
    00702       if ((HasBit(invalid_dirs, DIAGDIR_NE) && !(tileh & SLOPE_NE)) ||
    00703           (HasBit(invalid_dirs, DIAGDIR_SE) && !(tileh & SLOPE_SE)) ||
    00704           (HasBit(invalid_dirs, DIAGDIR_SW) && !(tileh & SLOPE_SW)) ||
    00705           (HasBit(invalid_dirs, DIAGDIR_NW) && !(tileh & SLOPE_NW))) {
    00706         return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00707       }
    00708       cost.AddCost(_price[PR_BUILD_FOUNDATION]);
    00709       flat_z += TILE_HEIGHT;
    00710     }
    00711
    00712     /* get corresponding flat level and make sure that all parts of the station have the same level. */
    00713     if (allowed_z == -1) {
    00714       /* first tile */
    00715       allowed_z = flat_z;
    00716     } else if (allowed_z != flat_z) {
    00717       return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00718     }
    00719
    00720     /* if station is set, then we have special handling to allow building on top of already existing stations.
    00721      * so station points to INVALID_STATION if we can build on any station.
    00722      * Or it points to a station if we're only allowed to build on exactly that station. */
    00723     if (station != NULL && IsTileType(tile_cur, MP_STATION)) {
    00724       if (!IsRailStation(tile_cur)) {
    00725         return ClearTile_Station(tile_cur, DC_AUTO); // get error message
    00726       } else {
    00727         StationID st = GetStationIndex(tile_cur);
    00728         if (*station == INVALID_STATION) {
    00729           *station = st;
    00730         } else if (*station != st) {
    00731           return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00732         }
    00733       }
    00734     } else if (check_clear) {
    00735       /* Rail type is only valid when building a railway station; in station to
    00736        * build isn't a rail station it's INVALID_RAILTYPE. */
    00737       if (rt != INVALID_RAILTYPE &&
    00738           IsPlainRailTile(tile_cur) && !HasSignals(tile_cur) &&
    00739           HasPowerOnRail(GetRailType(tile_cur), rt)) {
    00740         /* Allow overbuilding if the tile:
    00741          *  - has rail, but no signals
    00742          *  - it has exactly one track
    00743          *  - the track is in line with the station
    00744          *  - the current rail type has power on the to-be-built type (e.g. convert normal rail to el rail)
    00745          */
    00746         TrackBits tracks = GetTrackBits(tile_cur);
    00747         Track track = RemoveFirstTrack(&tracks);
    00748         Track expected_track = HasBit(invalid_dirs, DIAGDIR_NE) ? TRACK_X : TRACK_Y;
    00749
    00750         if (tracks == TRACK_BIT_NONE && track == expected_track) {
    00751           CommandCost ret = DoCommand(tile_cur, 0, track, flags, CMD_REMOVE_SINGLE_RAIL);
    00752           if (ret.Failed()) return ret;
    00753           cost.AddCost(ret);
    00754           /* With flags & ~DC_EXEC CmdLandscapeClear would fail since the rail still exists */
    00755           continue;
    00756         }
    00757       }
    00758       CommandCost ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00759       if (ret.Failed()) return ret;
    00760       cost.AddCost(ret);
    00761     }
    00762   }
    00763
    00764   return cost;
    00765 }
    00766
    00774 bool CanExpandRailStation(const BaseStation *st, TileArea &new_ta, Axis axis)
    00775 {
    00776   TileArea cur_ta = st->train_station;
    00777
    00778   if (_settings_game.station.nonuniform_stations) {
    00779     /* determine new size of train station region.. */
    00780     int x = min(TileX(cur_ta.tile), TileX(new_ta.tile));
    00781     int y = min(TileY(cur_ta.tile), TileY(new_ta.tile));
    00782     new_ta.w = max(TileX(cur_ta.tile) + cur_ta.w, TileX(new_ta.tile) + new_ta.w) - x;
    00783     new_ta.h = max(TileY(cur_ta.tile) + cur_ta.h, TileY(new_ta.tile) + new_ta.h) - y;
    00784     new_ta.tile = TileXY(x, y);
    00785   } else {
    00786     /* do not allow modifying non-uniform stations,
    00787      * the uniform-stations code wouldn't handle it well */
    00788     TILE_LOOP(t, cur_ta.w, cur_ta.h, cur_ta.tile) {
    00789       if (!st->TileBelongsToRailStation(t)) { // there may be adjoined station
    00790         _error_message = STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED;
    00791         return false;
    00792       }
    00793     }
    00794
    00795     /* check so the orientation is the same */
    00796     if (GetRailStationAxis(cur_ta.tile) != axis) {
    00797       _error_message = STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED;
    00798       return false;
    00799     }
    00800
    00801     /* check if the new station adjoins the old station in either direction */
    00802     if (cur_ta.w == new_ta.w && cur_ta.tile == new_ta.tile + TileDiffXY(0, new_ta.h)) {
    00803       /* above */
    00804       new_ta.h += cur_ta.h;
    00805     } else if (cur_ta.w == new_ta.w && cur_ta.tile == new_ta.tile - TileDiffXY(0, cur_ta.h)) {
    00806       /* below */
    00807       new_ta.tile = cur_ta.tile;
    00808       new_ta.h += new_ta.h;
    00809     } else if (cur_ta.h == new_ta.h && cur_ta.tile == new_ta.tile + TileDiffXY(new_ta.w, 0)) {
    00810       /* to the left */
    00811       new_ta.w += cur_ta.w;
    00812     } else if (cur_ta.h == new_ta.h && cur_ta.tile == new_ta.tile - TileDiffXY(cur_ta.w, 0)) {
    00813       /* to the right */
    00814       new_ta.tile = cur_ta.tile;
    00815       new_ta.w += cur_ta.w;
    00816     } else {
    00817       _error_message = STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED;
    00818       return false;
    00819     }
    00820   }
    00821   /* make sure the final size is not too big. */
    00822   if (new_ta.w > _settings_game.station.station_spread || new_ta.h > _settings_game.station.station_spread) {
    00823     _error_message = STR_ERROR_STATION_TOO_SPREAD_OUT;
    00824     return false;
    00825   }
    00826
    00827   return true;
    00828 }
    00829
    00830 static inline byte *CreateSingle(byte *layout, int n)
    00831 {
    00832   int i = n;
    00833   do *layout++ = 0; while (--i);
    00834   layout[((n - 1) >> 1) - n] = 2;
    00835   return layout;
    00836 }
    00837
    00838 static inline byte *CreateMulti(byte *layout, int n, byte b)
    00839 {
    00840   int i = n;
    00841   do *layout++ = b; while (--i);
    00842   if (n > 4) {
    00843     layout[0 - n] = 0;
    00844     layout[n - 1 - n] = 0;
    00845   }
    00846   return layout;
    00847 }
    00848
    00849 void GetStationLayout(byte *layout, int numtracks, int plat_len, const StationSpec *statspec)
    00850 {
    00851   if (statspec != NULL && statspec->lengths >= plat_len &&
    00852       statspec->platforms[plat_len - 1] >= numtracks &&
    00853       statspec->layouts[plat_len - 1][numtracks - 1]) {
    00854     /* Custom layout defined, follow it. */
    00855     memcpy(layout, statspec->layouts[plat_len - 1][numtracks - 1],
    00856       plat_len * numtracks);
    00857     return;
    00858   }
    00859
    00860   if (plat_len == 1) {
    00861     CreateSingle(layout, numtracks);
    00862   } else {
    00863     if (numtracks & 1) layout = CreateSingle(layout, plat_len);
    00864     numtracks >>= 1;
    00865
    00866     while (--numtracks >= 0) {
    00867       layout = CreateMulti(layout, plat_len, 4);
    00868       layout = CreateMulti(layout, plat_len, 6);
    00869     }
    00870   }
    00871 }
    00872
    00884 template <class T, StringID error_message>
    00885 CommandCost FindJoiningBaseStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, T **st)
    00886 {
    00887   assert(*st == NULL);
    00888   bool check_surrounding = true;
    00889
    00890   if (_settings_game.station.adjacent_stations) {
    00891     if (existing_station != INVALID_STATION) {
    00892       if (adjacent && existing_station != station_to_join) {
    00893         /* You can't build an adjacent station over the top of one that
    00894          * already exists. */
    00895         return_cmd_error(error_message);
    00896       } else {
    00897         /* Extend the current station, and don't check whether it will
    00898          * be near any other stations. */
    00899         *st = T::GetIfValid(existing_station);
    00900         check_surrounding = (*st == NULL);
    00901       }
    00902     } else {
    00903       /* There's no station here. Don't check the tiles surrounding this
    00904        * one if the company wanted to build an adjacent station. */
    00905       if (adjacent) check_surrounding = false;
    00906     }
    00907   }
    00908
    00909   if (check_surrounding) {
    00910     /* Make sure there are no similar stations around us. */
    00911     if (!GetStationAround(ta, existing_station, st)) return CMD_ERROR;
    00912   }
    00913
    00914   /* Distant join */
    00915   if (*st == NULL && station_to_join != INVALID_STATION) *st = T::GetIfValid(station_to_join);
    00916
    00917   return CommandCost();;
    00918 }
    00919
    00929 static CommandCost FindJoiningStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
    00930 {
    00931   return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_RAILWAY_STATION_FIRST>(existing_station, station_to_join, adjacent, ta, st);
    00932 }
    00933
    00943 CommandCost FindJoiningWaypoint(StationID existing_waypoint, StationID waypoint_to_join, bool adjacent, TileArea ta, Waypoint **wp)
    00944 {
    00945   return FindJoiningBaseStation<Waypoint, STR_ERROR_MUST_REMOVE_RAILWAYPOINT_FIRST>(existing_waypoint, waypoint_to_join, adjacent, ta, wp);
    00946 }
    00947
    00965 CommandCost CmdBuildRailStation(TileIndex tile_org, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    00966 {
    00967   /* Unpack parameters */
    00968   RailType rt    = (RailType)GB(p1, 0, 4);
    00969   Axis axis      = Extract<Axis, 4>(p1);
    00970   byte numtracks = GB(p1,  8, 8);
    00971   byte plat_len  = GB(p1, 16, 8);
    00972   bool adjacent  = HasBit(p1, 24);
    00973
    00974   StationClassID spec_class = (StationClassID)GB(p2, 0, 8);
    00975   byte spec_index           = GB(p2, 8, 8);
    00976   StationID station_to_join = GB(p2, 16, 16);
    00977
    00978   /* Does the authority allow this? */
    00979   if (!CheckIfAuthorityAllowsNewStation(tile_org, flags)) return CMD_ERROR;
    00980   if (!ValParamRailtype(rt)) return CMD_ERROR;
    00981
    00982   /* Check if the given station class is valid */
    00983   if ((uint)spec_class >= GetNumStationClasses()) return CMD_ERROR;
    00984   if (spec_index >= GetNumCustomStations(spec_class)) return CMD_ERROR;
    00985   if (plat_len == 0 || numtracks == 0) return CMD_ERROR;
    00986
    00987   int w_org, h_org;
    00988   if (axis == AXIS_X) {
    00989     w_org = plat_len;
    00990     h_org = numtracks;
    00991   } else {
    00992     h_org = plat_len;
    00993     w_org = numtracks;
    00994   }
    00995
    00996   bool reuse = (station_to_join != NEW_STATION);
    00997   if (!reuse) station_to_join = INVALID_STATION;
    00998   bool distant_join = (station_to_join != INVALID_STATION);
    00999
    01000   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01001
    01002   if (h_org > _settings_game.station.station_spread || w_org > _settings_game.station.station_spread) return CMD_ERROR;
    01003
    01004   /* these values are those that will be stored in train_tile and station_platforms */
    01005   TileArea new_location(tile_org, w_org, h_org);
    01006
    01007   /* Make sure the area below consists of clear tiles. (OR tiles belonging to a certain rail station) */
    01008   StationID est = INVALID_STATION;
    01009   /* If DC_EXEC is in flag, do not want to pass it to CheckFlatLandBelow, because of a nice bug
    01010    * for detail info, see:
    01011    * https://sourceforge.net/tracker/index.php?func=detail&aid=1029064&group_id=103924&atid=636365 */
    01012   CommandCost ret = CheckFlatLandBelow(tile_org, w_org, h_org, flags & ~DC_EXEC, 5 << axis, _settings_game.station.nonuniform_stations ? &est : NULL, true, rt);
    01013   if (ret.Failed()) return ret;
    01014   CommandCost cost(EXPENSES_CONSTRUCTION, ret.GetCost() + (numtracks * _price[PR_BUILD_STATION_RAIL] + _price[PR_BUILD_STATION_RAIL_LENGTH]) * plat_len);
    01015
    01016   Station *st = NULL;
    01017   ret = FindJoiningStation(est, station_to_join, adjacent, new_location, &st);
    01018   if (ret.Failed()) return ret;
    01019
    01020   /* See if there is a deleted station close to us. */
    01021   if (st == NULL && reuse) st = GetClosestDeletedStation(tile_org);
    01022
    01023   if (st != NULL) {
    01024     /* Reuse an existing station. */
    01025     if (st->owner != _current_company)
    01026       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01027
    01028     if (st->train_station.tile != INVALID_TILE) {
    01029       /* check if we want to expanding an already existing station? */
    01030       if (!_settings_game.station.join_stations)
    01031         return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_RAILROAD);
    01032       if (!CanExpandRailStation(st, new_location, axis))
    01033         return CMD_ERROR;
    01034     }
    01035
    01036     /* XXX can't we pack this in the "else" part of the if above? */
    01037     if (!st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TEST)) return CMD_ERROR;
    01038   } else {
    01039     /* allocate and initialize new station */
    01040     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01041
    01042     if (flags & DC_EXEC) {
    01043       st = new Station(tile_org);
    01044
    01045       st->town = ClosestTownFromTile(tile_org, UINT_MAX);
    01046       st->string_id = GenerateStationName(st, tile_org, STATIONNAMING_RAIL);
    01047
    01048       if (Company::IsValidID(_current_company)) {
    01049         SetBit(st->town->have_ratings, _current_company);
    01050       }
    01051     }
    01052   }
    01053
    01054   /* Check if we can allocate a custom stationspec to this station */
    01055   const StationSpec *statspec = GetCustomStationSpec(spec_class, spec_index);
    01056   int specindex = AllocateSpecToStation(statspec, st, (flags & DC_EXEC) != 0);
    01057   if (specindex == -1) return_cmd_error(STR_ERROR_TOO_MANY_STATION_SPECS);
    01058
    01059   if (statspec != NULL) {
    01060     /* Perform NewStation checks */
    01061
    01062     /* Check if the station size is permitted */
    01063     if (HasBit(statspec->disallowed_platforms, numtracks - 1) || HasBit(statspec->disallowed_lengths, plat_len - 1)) {
    01064       return CMD_ERROR;
    01065     }
    01066
    01067     /* Check if the station is buildable */
    01068     if (HasBit(statspec->callback_mask, CBM_STATION_AVAIL) && GB(GetStationCallback(CBID_STATION_AVAILABILITY, 0, 0, statspec, NULL, INVALID_TILE), 0, 8) == 0) {
    01069       return CMD_ERROR;
    01070     }
    01071   }
    01072
    01073   if (flags & DC_EXEC) {
    01074     TileIndexDiff tile_delta;
    01075     byte *layout_ptr;
    01076     byte numtracks_orig;
    01077     Track track;
    01078
    01079     /* Now really clear the land below the station
    01080      * It should never return CMD_ERROR.. but you never know ;)
    01081      * (a bit strange function name for it, but it really does clear the land, when DC_EXEC is in flags) */
    01082     ret = CheckFlatLandBelow(tile_org, w_org, h_org, flags, 5 << axis, _settings_game.station.nonuniform_stations ? &est : NULL, true, rt);
    01083     if (ret.Failed()) return ret;
    01084
    01085     st->train_station = new_location;
    01086     st->AddFacility(FACIL_TRAIN, new_location.tile);
    01087
    01088     st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TRY);
    01089
    01090     if (statspec != NULL) {
    01091       /* Include this station spec's animation trigger bitmask
    01092        * in the station's cached copy. */
    01093       st->cached_anim_triggers |= statspec->anim_triggers;
    01094     }
    01095
    01096     tile_delta = (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
    01097     track = AxisToTrack(axis);
    01098
    01099     layout_ptr = AllocaM(byte, numtracks * plat_len);
    01100     GetStationLayout(layout_ptr, numtracks, plat_len, statspec);
    01101
    01102     numtracks_orig = numtracks;
    01103
    01104     SmallVector<Train*, 4> affected_vehicles;
    01105     do {
    01106       TileIndex tile = tile_org;
    01107       int w = plat_len;
    01108       do {
    01109         byte layout = *layout_ptr++;
    01110         if (IsRailStationTile(tile) && HasStationReservation(tile)) {
    01111           /* Check for trains having a reservation for this tile. */
    01112           Train *v = GetTrainForReservation(tile, AxisToTrack(GetRailStationAxis(tile)));
    01113           if (v != NULL) {
    01114             FreeTrainTrackReservation(v);
    01115             *affected_vehicles.Append() = v;
    01116             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01117             for (; v->Next() != NULL; v = v->Next()) { }
    01118             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), false);
    01119           }
    01120         }
    01121
    01122         /* Remove animation if overbuilding */
    01123         DeleteAnimatedTile(tile);
    01124         byte old_specindex = HasStationTileRail(tile) ? GetCustomStationSpecIndex(tile) : 0;
    01125         MakeRailStation(tile, st->owner, st->index, axis, layout & ~1, rt);
    01126         /* Free the spec if we overbuild something */
    01127         DeallocateSpecFromStation(st, old_specindex);
    01128
    01129         SetCustomStationSpecIndex(tile, specindex);
    01130         SetStationTileRandomBits(tile, GB(Random(), 0, 4));
    01131         SetStationAnimationFrame(tile, 0);
    01132
    01133         if (statspec != NULL) {
    01134           /* Use a fixed axis for GetPlatformInfo as our platforms / numtracks are always the right way around */
    01135           uint32 platinfo = GetPlatformInfo(AXIS_X, 0, plat_len, numtracks_orig, plat_len - w, numtracks_orig - numtracks, false);
    01136
    01137           /* As the station is not yet completely finished, the station does not yet exist. */
    01138           uint16 callback = GetStationCallback(CBID_STATION_TILE_LAYOUT, platinfo, 0, statspec, NULL, tile);
    01139           if (callback != CALLBACK_FAILED && callback < 8) SetStationGfx(tile, (callback & ~1) + axis);
    01140
    01141           /* Trigger station animation -- after building? */
    01142           StationAnimationTrigger(st, tile, STAT_ANIM_BUILT);
    01143         }
    01144
    01145         tile += tile_delta;
    01146       } while (--w);
    01147       AddTrackToSignalBuffer(tile_org, track, _current_company);
    01148       YapfNotifyTrackLayoutChange(tile_org, track);
    01149       tile_org += tile_delta ^ TileDiffXY(1, 1); // perpendicular to tile_delta
    01150     } while (--numtracks);
    01151
    01152     for (uint i = 0; i < affected_vehicles.Length(); ++i) {
    01153       /* Restore reservations of trains. */
    01154       Train *v = affected_vehicles[i];
    01155       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01156       TryPathReserve(v, true, true);
    01157       for (; v->Next() != NULL; v = v->Next()) { }
    01158       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01159     }
    01160
    01161     st->MarkTilesDirty(false);
    01162     st->UpdateVirtCoord();
    01163     UpdateStationAcceptance(st, false);
    01164     st->RecomputeIndustriesNear();
    01165     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01166     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01167     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01168   }
    01169
    01170   return cost;
    01171 }
    01172
    01173 static void MakeRailStationAreaSmaller(BaseStation *st)
    01174 {
    01175   TileArea ta = st->train_station;
    01176
    01177 restart:
    01178
    01179   /* too small? */
    01180   if (ta.w != 0 && ta.h != 0) {
    01181     /* check the left side, x = constant, y changes */
    01182     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(0, i));) {
    01183       /* the left side is unused? */
    01184       if (++i == ta.h) {
    01185         ta.tile += TileDiffXY(1, 0);
    01186         ta.w--;
    01187         goto restart;
    01188       }
    01189     }
    01190
    01191     /* check the right side, x = constant, y changes */
    01192     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(ta.w - 1, i));) {
    01193       /* the right side is unused? */
    01194       if (++i == ta.h) {
    01195         ta.w--;
    01196         goto restart;
    01197       }
    01198     }
    01199
    01200     /* check the upper side, y = constant, x changes */
    01201     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, 0));) {
    01202       /* the left side is unused? */
    01203       if (++i == ta.w) {
    01204         ta.tile += TileDiffXY(0, 1);
    01205         ta.h--;
    01206         goto restart;
    01207       }
    01208     }
    01209
    01210     /* check the lower side, y = constant, x changes */
    01211     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, ta.h - 1));) {
    01212       /* the left side is unused? */
    01213       if (++i == ta.w) {
    01214         ta.h--;
    01215         goto restart;
    01216       }
    01217     }
    01218   } else {
    01219     ta.Clear();
    01220   }
    01221
    01222   st->train_station = ta;
    01223 }
    01224
    01235 template <class T>
    01236 CommandCost RemoveFromRailBaseStation(TileArea ta, SmallVector<T *, 4> &affected_stations, DoCommandFlag flags, Money removal_cost, bool keep_rail)
    01237 {
    01238   /* Count of the number of tiles removed */
    01239   int quantity = 0;
    01240   CommandCost total_cost(EXPENSES_CONSTRUCTION);
    01241
    01242   /* Do the action for every tile into the area */
    01243   TILE_AREA_LOOP(tile, ta) {
    01244     /* Make sure the specified tile is a rail station */
    01245     if (!HasStationTileRail(tile)) continue;
    01246
    01247     /* If there is a vehicle on ground, do not allow to remove (flood) the tile */
    01248     if (!EnsureNoVehicleOnGround(tile)) continue;
    01249
    01250     /* Check ownership of station */
    01251     T *st = T::GetByTile(tile);
    01252     if (st == NULL) continue;
    01253     if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) continue;
    01254
    01255     /* Do not allow removing from stations if non-uniform stations are not enabled
    01256      * The check must be here to give correct error message
    01257      */
    01258     if (!_settings_game.station.nonuniform_stations) return_cmd_error(STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED);
    01259
    01260     /* If we reached here, the tile is valid so increase the quantity of tiles we will remove */
    01261     quantity++;
    01262
    01263     if (flags & DC_EXEC) {
    01264       /* read variables before the station tile is removed */
    01265       uint specindex = GetCustomStationSpecIndex(tile);
    01266       Track track = GetRailStationTrack(tile);
    01267       Owner owner = GetTileOwner(tile);
    01268       RailType rt = GetRailType(tile);
    01269       Train *v = NULL;
    01270
    01271       if (HasStationReservation(tile)) {
    01272         v = GetTrainForReservation(tile, track);
    01273         if (v != NULL) {
    01274           /* Free train reservation. */
    01275           FreeTrainTrackReservation(v);
    01276           if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01277           Vehicle *temp = v;
    01278           for (; temp->Next() != NULL; temp = temp->Next()) { }
    01279           if (IsRailStationTile(temp->tile)) SetRailStationPlatformReservation(temp->tile, TrackdirToExitdir(ReverseTrackdir(temp->GetVehicleTrackdir())), false);
    01280         }
    01281       }
    01282
    01283       DoClearSquare(tile);
    01284       if (keep_rail) MakeRailNormal(tile, owner, TrackToTrackBits(track), rt);
    01285
    01286       st->rect.AfterRemoveTile(st, tile);
    01287       AddTrackToSignalBuffer(tile, track, owner);
    01288       YapfNotifyTrackLayoutChange(tile, track);
    01289
    01290       DeallocateSpecFromStation(st, specindex);
    01291
    01292       affected_stations.Include(st);
    01293
    01294       if (v != NULL) {
    01295         /* Restore station reservation. */
    01296         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01297         TryPathReserve(v, true, true);
    01298         for (; v->Next() != NULL; v = v->Next()) { }
    01299         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01300       }
    01301     }
    01302     if (keep_rail) {
    01303       /* Don't refund the 'steel' of the track! */
    01304       total_cost.AddCost(-_price[PR_CLEAR_RAIL]);
    01305     }
    01306   }
    01307
    01308   if (quantity == 0) return CMD_ERROR;
    01309
    01310   for (T **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01311     T *st = *stp;
    01312
    01313     /* now we need to make the "spanned" area of the railway station smaller
    01314      * if we deleted something at the edges.
    01315      * we also need to adjust train_tile. */
    01316     MakeRailStationAreaSmaller(st);
    01317     UpdateStationSignCoord(st);
    01318
    01319     /* if we deleted the whole station, delete the train facility. */
    01320     if (st->train_station.tile == INVALID_TILE) {
    01321       st->facilities &= ~FACIL_TRAIN;
    01322       SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01323       st->UpdateVirtCoord();
    01324       DeleteStationIfEmpty(st);
    01325     }
    01326   }
    01327
    01328   total_cost.AddCost(quantity * removal_cost);
    01329   return total_cost;
    01330 }
    01331
    01342 CommandCost CmdRemoveFromRailStation(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01343 {
    01344   TileIndex end = p1 == 0 ? start : p1;
    01345   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01346
    01347   TileArea ta(start, end);
    01348   SmallVector<Station *, 4> affected_stations;
    01349
    01350   CommandCost ret = RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_STATION_RAIL], HasBit(p2, 0));
    01351   if (ret.Failed()) return ret;
    01352
    01353   /* Do all station specific functions here. */
    01354   for (Station **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01355     Station *st = *stp;
    01356
    01357     if (st->train_station.tile == INVALID_TILE) SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01358     st->MarkTilesDirty(false);
    01359     st->RecomputeIndustriesNear();
    01360   }
    01361
    01362   /* Now apply the rail cost to the number that we deleted */
    01363   return ret;
    01364 }
    01365
    01376 CommandCost CmdRemoveFromRailWaypoint(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01377 {
    01378   TileIndex end = p1 == 0 ? start : p1;
    01379   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01380
    01381   TileArea ta(start, end);
    01382   SmallVector<Waypoint *, 4> affected_stations;
    01383
    01384   return RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_WAYPOINT_RAIL], HasBit(p2, 0));
    01385 }
    01386
    01387
    01395 template <class T>
    01396 CommandCost RemoveRailStation(T *st, DoCommandFlag flags)
    01397 {
    01398   /* Current company owns the station? */
    01399   if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) return CMD_ERROR;
    01400
    01401   /* determine width and height of platforms */
    01402   TileArea ta = st->train_station;
    01403
    01404   assert(ta.w != 0 && ta.h != 0);
    01405
    01406   CommandCost cost(EXPENSES_CONSTRUCTION);
    01407   /* clear all areas of the station */
    01408   TILE_AREA_LOOP(tile, ta) {
    01409     /* for nonuniform stations, only remove tiles that are actually train station tiles */
    01410     if (!st->TileBelongsToRailStation(tile)) continue;
    01411
    01412     if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
    01413
    01414     cost.AddCost(_price[PR_CLEAR_STATION_RAIL]);
    01415     if (flags & DC_EXEC) {
    01416       /* read variables before the station tile is removed */
    01417       Track track = GetRailStationTrack(tile);
    01418       Owner owner = GetTileOwner(tile); // _current_company can be OWNER_WATER
    01419       Train *v = NULL;
    01420       if (HasStationReservation(tile)) {
    01421         v = GetTrainForReservation(tile, track);
    01422         if (v != NULL) FreeTrainTrackReservation(v);
    01423       }
    01424       DoClearSquare(tile);
    01425       AddTrackToSignalBuffer(tile, track, owner);
    01426       YapfNotifyTrackLayoutChange(tile, track);
    01427       if (v != NULL) TryPathReserve(v, true);
    01428     }
    01429   }
    01430
    01431   if (flags & DC_EXEC) {
    01432     st->rect.AfterRemoveRect(st, st->train_station.tile, st->train_station.w, st->train_station.h);
    01433
    01434     st->train_station.Clear();
    01435
    01436     st->facilities &= ~FACIL_TRAIN;
    01437
    01438     free(st->speclist);
    01439     st->num_specs = 0;
    01440     st->speclist  = NULL;
    01441     st->cached_anim_triggers = 0;
    01442
    01443     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01444     st->UpdateVirtCoord();
    01445     DeleteStationIfEmpty(st);
    01446   }
    01447
    01448   return cost;
    01449 }
    01450
    01457 static CommandCost RemoveRailStation(TileIndex tile, DoCommandFlag flags)
    01458 {
    01459   /* if there is flooding and non-uniform stations are enabled, remove platforms tile by tile */
    01460   if (_current_company == OWNER_WATER && _settings_game.station.nonuniform_stations) {
    01461     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_STATION);
    01462   }
    01463
    01464   Station *st = Station::GetByTile(tile);
    01465   CommandCost cost = RemoveRailStation(st, flags);
    01466
    01467   if (flags & DC_EXEC) st->RecomputeIndustriesNear();
    01468
    01469   return cost;
    01470 }
    01471
    01478 static CommandCost RemoveRailWaypoint(TileIndex tile, DoCommandFlag flags)
    01479 {
    01480   /* if there is flooding and non-uniform stations are enabled, remove waypoints tile by tile */
    01481   if (_current_company == OWNER_WATER && _settings_game.station.nonuniform_stations) {
    01482     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_WAYPOINT);
    01483   }
    01484
    01485   return RemoveRailStation(Waypoint::GetByTile(tile), flags);
    01486 }
    01487
    01488
    01494 static RoadStop **FindRoadStopSpot(bool truck_station, Station *st)
    01495 {
    01496   RoadStop **primary_stop = (truck_station) ? &st->truck_stops : &st->bus_stops;
    01497
    01498   if (*primary_stop == NULL) {
    01499     /* we have no roadstop of the type yet, so write a "primary stop" */
    01500     return primary_stop;
    01501   } else {
    01502     /* there are stops already, so append to the end of the list */
    01503     RoadStop *stop = *primary_stop;
    01504     while (stop->next != NULL) stop = stop->next;
    01505     return &stop->next;
    01506   }
    01507 }
    01508
    01521 CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01522 {
    01523   bool type = HasBit(p2, 0);
    01524   bool is_drive_through = HasBit(p2, 1);
    01525   bool build_over_road  = is_drive_through && IsNormalRoadTile(tile);
    01526   RoadTypes rts = (RoadTypes)GB(p2, 2, 2);
    01527   StationID station_to_join = GB(p2, 16, 16);
    01528   bool reuse = (station_to_join != NEW_STATION);
    01529   if (!reuse) station_to_join = INVALID_STATION;
    01530   bool distant_join = (station_to_join != INVALID_STATION);
    01531   Owner tram_owner = _current_company;
    01532   Owner road_owner = _current_company;
    01533
    01534   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01535
    01536   if (!AreValidRoadTypes(rts) || !HasRoadTypesAvail(_current_company, rts)) return CMD_ERROR;
    01537
    01538   /* Trams only have drive through stops */
    01539   if (!is_drive_through && HasBit(rts, ROADTYPE_TRAM)) return CMD_ERROR;
    01540
    01541   /* Saveguard the parameters */
    01542   if (!IsValidDiagDirection((DiagDirection)p1)) return CMD_ERROR;
    01543   /* If it is a drive-through stop check for valid axis */
    01544   if (is_drive_through && !IsValidAxis((Axis)p1)) return CMD_ERROR;
    01545   /* Road bits in the wrong direction */
    01546   if (build_over_road && (GetAllRoadBits(tile) & ((Axis)p1 == AXIS_X ? ROAD_Y : ROAD_X)) != 0) return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    01547
    01548   if (!CheckIfAuthorityAllowsNewStation(tile, flags)) return CMD_ERROR;
    01549
    01550   RoadTypes cur_rts = IsNormalRoadTile(tile) ? GetRoadTypes(tile) : ROADTYPES_NONE;
    01551   uint num_roadbits = 0;
    01552   /* Not allowed to build over this road */
    01553   if (build_over_road) {
    01554     /* there is a road, check if we can build road+tram stop over it */
    01555     if (HasBit(cur_rts, ROADTYPE_ROAD)) {
    01556       road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    01557       if (road_owner == OWNER_TOWN) {
    01558         if (!_settings_game.construction.road_stop_on_town_road) return_cmd_error(STR_ERROR_DRIVE_THROUGH_ON_TOWN_ROAD);
    01559       } else if (!_settings_game.construction.road_stop_on_competitor_road && road_owner != OWNER_NONE && !CheckOwnership(road_owner)) {
    01560         return CMD_ERROR;
    01561       }
    01562       num_roadbits += CountBits(GetRoadBits(tile, ROADTYPE_ROAD));
    01563     }
    01564
    01565     /* there is a tram, check if we can build road+tram stop over it */
    01566     if (HasBit(cur_rts, ROADTYPE_TRAM)) {
    01567       tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    01568       if (!_settings_game.construction.road_stop_on_competitor_road && tram_owner != OWNER_NONE && !CheckOwnership(tram_owner)) {
    01569         return CMD_ERROR;
    01570       }
    01571       num_roadbits += CountBits(GetRoadBits(tile, ROADTYPE_TRAM));
    01572     }
    01573
    01574     /* Don't allow building the roadstop when vehicles are already driving on it */
    01575     if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
    01576
    01577     /* Do not remove roadtypes! */
    01578     rts |= cur_rts;
    01579   }
    01580
    01581   CommandCost cost = CheckFlatLandBelow(tile, 1, 1, flags, is_drive_through ? 5 << p1 : 1 << p1, NULL, !build_over_road);
    01582   if (cost.Failed()) return cost;
    01583   uint roadbits_to_build = CountBits(rts) * 2 - num_roadbits;
    01584   cost.AddCost(_price[PR_BUILD_ROAD] * roadbits_to_build);
    01585
    01586   Station *st = NULL;
    01587   CommandCost ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 5), TileArea(tile, 1, 1), &st);
    01588   if (ret.Failed()) return ret;
    01589
    01590   /* Find a deleted station close to us */
    01591   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    01592
    01593   /* give us a road stop in the list, and check if something went wrong */
    01594   if (!RoadStop::CanAllocateItem()) return_cmd_error(type ? STR_ERROR_TOO_MANY_TRUCK_STOPS : STR_ERROR_TOO_MANY_BUS_STOPS);
    01595
    01596   if (st != NULL) {
    01597     if (st->owner != _current_company) {
    01598       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01599     }
    01600
    01601     if (!st->rect.BeforeAddTile(tile, StationRect::ADD_TEST)) return CMD_ERROR;
    01602   } else {
    01603     /* allocate and initialize new station */
    01604     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01605
    01606     if (flags & DC_EXEC) {
    01607       st = new Station(tile);
    01608
    01609       st->town = ClosestTownFromTile(tile, UINT_MAX);
    01610       st->string_id = GenerateStationName(st, tile, STATIONNAMING_ROAD);
    01611
    01612       if (Company::IsValidID(_current_company)) {
    01613         SetBit(st->town->have_ratings, _current_company);
    01614       }
    01615     }
    01616   }
    01617
    01618   cost.AddCost(_price[type ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
    01619
    01620   if (flags & DC_EXEC) {
    01621     RoadStop *road_stop = new RoadStop(tile);
    01622     /* Insert into linked list of RoadStops */
    01623     RoadStop **currstop = FindRoadStopSpot(type, st);
    01624     *currstop = road_stop;
    01625
    01626     if (type) {
    01627       st->truck_station.Add(tile);
    01628     } else {
    01629       st->bus_station.Add(tile);
    01630     }
    01631
    01632     /* initialize an empty station */
    01633     st->AddFacility((type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, tile);
    01634
    01635     st->rect.BeforeAddTile(tile, StationRect::ADD_TRY);
    01636
    01637     RoadStopType rs_type = type ? ROADSTOP_TRUCK : ROADSTOP_BUS;
    01638     if (is_drive_through) {
    01639       MakeDriveThroughRoadStop(tile, st->owner, road_owner, tram_owner, st->index, rs_type, rts, (Axis)p1);
    01640       road_stop->MakeDriveThrough();
    01641     } else {
    01642       MakeRoadStop(tile, st->owner, st->index, rs_type, rts, (DiagDirection)p1);
    01643     }
    01644
    01645     st->UpdateVirtCoord();
    01646     UpdateStationAcceptance(st, false);
    01647     st->RecomputeIndustriesNear();
    01648     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01649     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01650     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_ROADVEHS);
    01651   }
    01652   return cost;
    01653 }
    01654
    01655
    01656 static Vehicle *ClearRoadStopStatusEnum(Vehicle *v, void *)
    01657 {
    01658   if (v->type == VEH_ROAD) {
    01659     /* Okay... we are a road vehicle on a drive through road stop.
    01660      * But that road stop has just been removed, so we need to make
    01661      * sure we are in a valid state... however, vehicles can also
    01662      * turn on road stop tiles, so only clear the 'road stop' state
    01663      * bits and only when the state was 'in road stop', otherwise
    01664      * we'll end up clearing the turn around bits. */
    01665     RoadVehicle *rv = RoadVehicle::From(v);
    01666     if (HasBit(rv->state, RVS_IN_DT_ROAD_STOP)) rv->state &= RVSB_ROAD_STOP_TRACKDIR_MASK;
    01667   }
    01668
    01669   return NULL;
    01670 }
    01671
    01672
    01679 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags)
    01680 {
    01681   Station *st = Station::GetByTile(tile);
    01682
    01683   if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) {
    01684     return CMD_ERROR;
    01685   }
    01686
    01687   bool is_truck = IsTruckStop(tile);
    01688
    01689   RoadStop **primary_stop;
    01690   RoadStop *cur_stop;
    01691   if (is_truck) { // truck stop
    01692     primary_stop = &st->truck_stops;
    01693     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_TRUCK);
    01694   } else {
    01695     primary_stop = &st->bus_stops;
    01696     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_BUS);
    01697   }
    01698
    01699   assert(cur_stop != NULL);
    01700
    01701   /* don't do the check for drive-through road stops when company bankrupts */
    01702   if (IsDriveThroughStopTile(tile) && (flags & DC_BANKRUPT)) {
    01703     /* remove the 'going through road stop' status from all vehicles on that tile */
    01704     if (flags & DC_EXEC) FindVehicleOnPos(tile, NULL, &ClearRoadStopStatusEnum);
    01705   } else {
    01706     if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
    01707   }
    01708
    01709   if (flags & DC_EXEC) {
    01710     if (*primary_stop == cur_stop) {
    01711       /* removed the first stop in the list */
    01712       *primary_stop = cur_stop->next;
    01713       /* removed the only stop? */
    01714       if (*primary_stop == NULL) {
    01715         st->facilities &= (is_truck ? ~FACIL_TRUCK_STOP : ~FACIL_BUS_STOP);
    01716       }
    01717     } else {
    01718       /* tell the predecessor in the list to skip this stop */
    01719       RoadStop *pred = *primary_stop;
    01720       while (pred->next != cur_stop) pred = pred->next;
    01721       pred->next = cur_stop->next;
    01722     }
    01723
    01724     if (IsDriveThroughStopTile(tile)) {
    01725       /* Clears the tile for us */
    01726       cur_stop->ClearDriveThrough();
    01727     } else {
    01728       DoClearSquare(tile);
    01729     }
    01730
    01731     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_ROADVEHS);
    01732     delete cur_stop;
    01733
    01734     /* Make sure no vehicle is going to the old roadstop */
    01735     RoadVehicle *v;
    01736     FOR_ALL_ROADVEHICLES(v) {
    01737       if (v->First() == v && v->current_order.IsType(OT_GOTO_STATION) &&
    01738           v->dest_tile == tile) {
    01739         v->dest_tile = v->GetOrderStationLocation(st->index);
    01740       }
    01741     }
    01742
    01743     st->rect.AfterRemoveTile(st, tile);
    01744
    01745     st->UpdateVirtCoord();
    01746     st->RecomputeIndustriesNear();
    01747     DeleteStationIfEmpty(st);
    01748
    01749     /* Update the tile area of the truck/bus stop */
    01750     if (is_truck) {
    01751       st->truck_station.Clear();
    01752       for (const RoadStop *rs = st->truck_stops; rs != NULL; rs = rs->next) st->truck_station.Add(rs->xy);
    01753     } else {
    01754       st->bus_station.Clear();
    01755       for (const RoadStop *rs = st->bus_stops; rs != NULL; rs = rs->next) st->bus_station.Add(rs->xy);
    01756     }
    01757   }
    01758
    01759   return CommandCost(EXPENSES_CONSTRUCTION, _price[is_truck ? PR_CLEAR_STATION_TRUCK : PR_CLEAR_STATION_BUS]);
    01760 }
    01761
    01770 CommandCost CmdRemoveRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01771 {
    01772   /* Make sure the specified tile is a road stop of the correct type */
    01773   if (!IsTileType(tile, MP_STATION) || !IsRoadStop(tile) || (uint32)GetRoadStopType(tile) != GB(p2, 0, 1)) return CMD_ERROR;
    01774
    01775   /* Save the stop info before it is removed */
    01776   bool is_drive_through = IsDriveThroughStopTile(tile);
    01777   RoadTypes rts = GetRoadTypes(tile);
    01778   RoadBits road_bits = IsDriveThroughStopTile(tile) ?
    01779       ((GetRoadStopDir(tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y) :
    01780       DiagDirToRoadBits(GetRoadStopDir(tile));
    01781
    01782   Owner road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    01783   Owner tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    01784   CommandCost ret = RemoveRoadStop(tile, flags);
    01785
    01786   /* If the stop was a drive-through stop replace the road */
    01787   if ((flags & DC_EXEC) && ret.Succeeded() && is_drive_through) {
    01788     /* Rebuild the drive throuhg road stop. As a road stop can only be
    01789      * removed by the owner of the roadstop, _current_company is the
    01790      * owner of the road stop. */
    01791     MakeRoadNormal(tile, road_bits, rts, ClosestTownFromTile(tile, UINT_MAX)->index,
    01792         road_owner, tram_owner);
    01793   }
    01794
    01795   return ret;
    01796 }
    01797
    01805 static uint GetMinimalAirportDistanceToTile(const AirportSpec *as, TileIndex town_tile, TileIndex airport_tile)
    01806 {
    01807   uint ttx = TileX(town_tile); // X, Y of town
    01808   uint tty = TileY(town_tile);
    01809
    01810   uint atx = TileX(airport_tile); // X, Y of northern airport corner
    01811   uint aty = TileY(airport_tile);
    01812
    01813   uint btx = TileX(airport_tile) + as->size_x - 1; // X, Y of southern corner
    01814   uint bty = TileY(airport_tile) + as->size_y - 1;
    01815
    01816   /* if ttx < atx, dx = atx - ttx
    01817    * if atx <= ttx <= btx, dx = 0
    01818    * else, dx = ttx - btx (similiar for dy) */
    01819   uint dx = ttx < atx ? atx - ttx : (ttx <= btx ? 0 : ttx - btx);
    01820   uint dy = tty < aty ? aty - tty : (tty <= bty ? 0 : tty - bty);
    01821
    01822   return dx + dy;
    01823 }
    01824
    01833 uint8 GetAirportNoiseLevelForTown(const AirportSpec *as, TileIndex town_tile, TileIndex tile)
    01834 {
    01835   /* 0 cannot be accounted, and 1 is the lowest that can be reduced from town.
    01836    * So no need to go any further*/
    01837   if (as->noise_level < 2) return as->noise_level;
    01838
    01839   uint distance = GetMinimalAirportDistanceToTile(as, town_tile, tile);
    01840
    01841   /* The steps for measuring noise reduction are based on the "magical" (and arbitrary) 8 base distance
    01842    * adding the town_council_tolerance 4 times, as a way to graduate, depending of the tolerance.
    01843    * Basically, it says that the less tolerant a town is, the bigger the distance before
    01844    * an actual decrease can be granted */
    01845   uint8 town_tolerance_distance = 8 + (_settings_game.difficulty.town_council_tolerance * 4);
    01846
    01847   /* now, we want to have the distance segmented using the distance judged bareable by town
    01848    * This will give us the coefficient of reduction the distance provides. */
    01849   uint noise_reduction = distance / town_tolerance_distance;
    01850
    01851   /* If the noise reduction equals the airport noise itself, don't give it for free.
    01852    * Otherwise, simply reduce the airport's level. */
    01853   return noise_reduction >= as->noise_level ? 1 : as->noise_level - noise_reduction;
    01854 }
    01855
    01863 Town *AirportGetNearestTown(const AirportSpec *as, TileIndex airport_tile)
    01864 {
    01865   Town *t, *nearest = NULL;
    01866   uint add = as->size_x + as->size_y - 2; // GetMinimalAirportDistanceToTile can differ from DistanceManhattan by this much
    01867   uint mindist = UINT_MAX - add; // prevent overflow
    01868   FOR_ALL_TOWNS(t) {
    01869     if (DistanceManhattan(t->xy, airport_tile) < mindist + add) { // avoid calling GetMinimalAirportDistanceToTile too often
    01870       uint dist = GetMinimalAirportDistanceToTile(as, t->xy, airport_tile);
    01871       if (dist < mindist) {
    01872         nearest = t;
    01873         mindist = dist;
    01874       }
    01875     }
    01876   }
    01877
    01878   return nearest;
    01879 }
    01880
    01881
    01883 void UpdateAirportsNoise()
    01884 {
    01885   Town *t;
    01886   const Station *st;
    01887
    01888   FOR_ALL_TOWNS(t) t->noise_reached = 0;
    01889
    01890   FOR_ALL_STATIONS(st) {
    01891     if (st->airport_tile != INVALID_TILE) {
    01892       const AirportSpec *as = st->GetAirportSpec();
    01893       Town *nearest = AirportGetNearestTown(as, st->airport_tile);
    01894       nearest->noise_reached += GetAirportNoiseLevelForTown(as, nearest->xy, st->airport_tile);
    01895     }
    01896   }
    01897 }
    01898
    01909 CommandCost CmdBuildAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01910 {
    01911   bool airport_upgrade = true;
    01912   StationID station_to_join = GB(p2, 16, 16);
    01913   bool reuse = (station_to_join != NEW_STATION);
    01914   if (!reuse) station_to_join = INVALID_STATION;
    01915   bool distant_join = (station_to_join != INVALID_STATION);
    01916
    01917   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01918
    01919   if (p1 >= NUM_AIRPORTS) return CMD_ERROR;
    01920
    01921   if (!CheckIfAuthorityAllowsNewStation(tile, flags)) {
    01922     return CMD_ERROR;
    01923   }
    01924
    01925   /* Check if a valid, buildable airport was chosen for construction */
    01926   const AirportSpec *as = AirportSpec::Get(p1);
    01927   if (!as->IsAvailable()) return CMD_ERROR;
    01928
    01929   Town *t = ClosestTownFromTile(tile, UINT_MAX);
    01930   int w = as->size_x;
    01931   int h = as->size_y;
    01932
    01933   if (w > _settings_game.station.station_spread || h > _settings_game.station.station_spread) {
    01934     _error_message = STR_ERROR_STATION_TOO_SPREAD_OUT;
    01935     return CMD_ERROR;
    01936   }
    01937
    01938   CommandCost cost = CheckFlatLandBelow(tile, w, h, flags, 0, NULL);
    01939   if (cost.Failed()) return cost;
    01940
    01941   /* Go get the final noise level, that is base noise minus factor from distance to town center */
    01942   Town *nearest = AirportGetNearestTown(as, tile);
    01943   uint newnoise_level = GetAirportNoiseLevelForTown(as, nearest->xy, tile);
    01944
    01945   /* Check if local auth would allow a new airport */
    01946   StringID authority_refuse_message = STR_NULL;
    01947
    01948   if (_settings_game.economy.station_noise_level) {
    01949     /* do not allow to build a new airport if this raise the town noise over the maximum allowed by town */
    01950     if ((nearest->noise_reached + newnoise_level) > nearest->MaxTownNoise()) {
    01951       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_NOISE;
    01952     }
    01953   } else {
    01954     uint num = 0;
    01955     const Station *st;
    01956     FOR_ALL_STATIONS(st) {
    01957       if (st->town == t && (st->facilities & FACIL_AIRPORT) && st->airport_type != AT_OILRIG) num++;
    01958     }
    01959     if (num >= 2) {
    01960       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_AIRPORT;
    01961     }
    01962   }
    01963
    01964   if (authority_refuse_message != STR_NULL) {
    01965     SetDParam(0, t->index);
    01966     return_cmd_error(authority_refuse_message);
    01967   }
    01968
    01969   Station *st = NULL;
    01970   CommandCost ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 0), TileArea(tile, w, h), &st);
    01971   if (ret.Failed()) return ret;
    01972
    01973   /* Distant join */
    01974   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    01975
    01976   /* Find a deleted station close to us */
    01977   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    01978
    01979   if (st != NULL) {
    01980     if (st->owner != _current_company) {
    01981       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01982     }
    01983
    01984     if (!st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TEST)) return CMD_ERROR;
    01985
    01986     if (st->airport_tile != INVALID_TILE) {
    01987       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_AIRPORT);
    01988     }
    01989   } else {
    01990     airport_upgrade = false;
    01991
    01992     /* allocate and initialize new station */
    01993     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01994
    01995     if (flags & DC_EXEC) {
    01996       st = new Station(tile);
    01997
    01998       st->town = t;
    01999       st->string_id = GenerateStationName(st, tile, !(GetAirport(p1)->flags & AirportFTAClass::AIRPLANES) ? STATIONNAMING_HELIPORT : STATIONNAMING_AIRPORT);
    02000
    02001       if (Company::IsValidID(_current_company)) {
    02002         SetBit(st->town->have_ratings, _current_company);
    02003       }
    02004     }
    02005   }
    02006
    02007   cost.AddCost(_price[PR_BUILD_STATION_AIRPORT] * w * h);
    02008
    02009   if (flags & DC_EXEC) {
    02010     /* Always add the noise, so there will be no need to recalculate when option toggles */
    02011     nearest->noise_reached += newnoise_level;
    02012
    02013     st->airport_tile = tile;
    02014     st->AddFacility(FACIL_AIRPORT, tile);
    02015     st->airport_type = (byte)p1;
    02016     st->airport_flags = 0;
    02017
    02018     st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TRY);
    02019
    02020     /* if airport was demolished while planes were en-route to it, the
    02021      * positions can no longer be the same (v->u.air.pos), since different
    02022      * airports have different indexes. So update all planes en-route to this
    02023      * airport. Only update if
    02024      * 1. airport is upgraded
    02025      * 2. airport is added to existing station (unfortunately unavoideable)
    02026      */
    02027     if (airport_upgrade) UpdateAirplanesOnNewStation(st);
    02028
    02029     const AirportTileTable *it = as->table[0];
    02030     do {
    02031       TileIndex cur_tile = tile + ToTileIndexDiff(it->ti);
    02032       MakeAirport(cur_tile, st->owner, st->index, it->gfx);
    02033     } while ((++it)->ti.x != -0x80);
    02034
    02035     st->UpdateVirtCoord();
    02036     UpdateStationAcceptance(st, false);
    02037     st->RecomputeIndustriesNear();
    02038     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02039     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02040     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_PLANES);
    02041
    02042     if (_settings_game.economy.station_noise_level) {
    02043       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02044     }
    02045   }
    02046
    02047   return cost;
    02048 }
    02049
    02056 static CommandCost RemoveAirport(TileIndex tile, DoCommandFlag flags)
    02057 {
    02058   Station *st = Station::GetByTile(tile);
    02059
    02060   if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) {
    02061     return CMD_ERROR;
    02062   }
    02063
    02064   tile = st->airport_tile;
    02065
    02066   const AirportSpec *as = st->GetAirportSpec();
    02067   int w = as->size_x;
    02068   int h = as->size_y;
    02069
    02070   CommandCost cost(EXPENSES_CONSTRUCTION);
    02071
    02072   const Aircraft *a;
    02073   FOR_ALL_AIRCRAFT(a) {
    02074     if (!a->IsNormalAircraft()) continue;
    02075     if (a->targetairport == st->index && a->state != FLYING) return CMD_ERROR;
    02076   }
    02077
    02078   TILE_LOOP(tile_cur, w, h, tile) {
    02079     if (!EnsureNoVehicleOnGround(tile_cur)) return CMD_ERROR;
    02080
    02081     if (!st->TileBelongsToAirport(tile_cur)) continue;
    02082
    02083     cost.AddCost(_price[PR_CLEAR_STATION_AIRPORT]);
    02084
    02085     if (flags & DC_EXEC) {
    02086       DeleteAnimatedTile(tile_cur);
    02087       DoClearSquare(tile_cur);
    02088     }
    02089   }
    02090
    02091   if (flags & DC_EXEC) {
    02092     for (uint i = 0; i < as->nof_depots; ++i) {
    02093       DeleteWindowById(
    02094         WC_VEHICLE_DEPOT, st->GetHangarTile(i)
    02095       );
    02096     }
    02097
    02098     /* Go get the final noise level, that is base noise minus factor from distance to town center.
    02099      * And as for construction, always remove it, even if the setting is not set, in order to avoid the
    02100      * need of recalculation */
    02101     Town *nearest = AirportGetNearestTown(as, tile);
    02102     nearest->noise_reached -= GetAirportNoiseLevelForTown(as, nearest->xy, tile);
    02103
    02104     st->rect.AfterRemoveRect(st, tile, w, h);
    02105
    02106     st->airport_tile = INVALID_TILE;
    02107     st->facilities &= ~FACIL_AIRPORT;
    02108
    02109     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_PLANES);
    02110
    02111     if (_settings_game.economy.station_noise_level) {
    02112       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02113     }
    02114
    02115     st->UpdateVirtCoord();
    02116     st->RecomputeIndustriesNear();
    02117     DeleteStationIfEmpty(st);
    02118   }
    02119
    02120   return cost;
    02121 }
    02122
    02129 bool HasStationInUse(StationID station, CompanyID company)
    02130 {
    02131   const Vehicle *v;
    02132   FOR_ALL_VEHICLES(v) {
    02133     if (company == INVALID_COMPANY || v->owner == company) {
    02134       const Order *order;
    02135       FOR_VEHICLE_ORDERS(v, order) {
    02136         if ((order->IsType(OT_GOTO_STATION) || order->IsType(OT_GOTO_WAYPOINT)) && order->GetDestination() == station) {
    02137           return true;
    02138         }
    02139       }
    02140     }
    02141   }
    02142   return false;
    02143 }
    02144
    02145 static const TileIndexDiffC _dock_tileoffs_chkaround[] = {
    02146   {-1,  0},
    02147   { 0,  0},
    02148   { 0,  0},
    02149   { 0, -1}
    02150 };
    02151 static const byte _dock_w_chk[4] = { 2, 1, 2, 1 };
    02152 static const byte _dock_h_chk[4] = { 1, 2, 1, 2 };
    02153
    02162 CommandCost CmdBuildDock(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02163 {
    02164   StationID station_to_join = GB(p2, 16, 16);
    02165   bool reuse = (station_to_join != NEW_STATION);
    02166   if (!reuse) station_to_join = INVALID_STATION;
    02167   bool distant_join = (station_to_join != INVALID_STATION);
    02168
    02169   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    02170
    02171   DiagDirection direction = GetInclinedSlopeDirection(GetTileSlope(tile, NULL));
    02172   if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02173   direction = ReverseDiagDir(direction);
    02174
    02175   /* Docks cannot be placed on rapids */
    02176   if (IsWaterTile(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02177
    02178   if (!CheckIfAuthorityAllowsNewStation(tile, flags)) return CMD_ERROR;
    02179
    02180   if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02181
    02182   if (DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR).Failed()) return CMD_ERROR;
    02183
    02184   TileIndex tile_cur = tile + TileOffsByDiagDir(direction);
    02185
    02186   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur, NULL) != SLOPE_FLAT) {
    02187     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02188   }
    02189
    02190   if (MayHaveBridgeAbove(tile_cur) && IsBridgeAbove(tile_cur)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02191
    02192   /* Get the water class of the water tile before it is cleared.*/
    02193   WaterClass wc = GetWaterClass(tile_cur);
    02194
    02195   if (DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR).Failed()) return CMD_ERROR;
    02196
    02197   tile_cur += TileOffsByDiagDir(direction);
    02198   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur, NULL) != SLOPE_FLAT) {
    02199     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02200   }
    02201
    02202   /* middle */
    02203   Station *st = NULL;
    02204   CommandCost ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p1, 0),
    02205       TileArea(tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02206           _dock_w_chk[direction], _dock_h_chk[direction]), &st);
    02207   if (ret.Failed()) return ret;
    02208
    02209   /* Distant join */
    02210   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    02211
    02212   /* Find a deleted station close to us */
    02213   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    02214
    02215   if (st != NULL) {
    02216     if (st->owner != _current_company) {
    02217       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    02218     }
    02219
    02220     if (!st->rect.BeforeAddRect(
    02221         tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02222         _dock_w_chk[direction], _dock_h_chk[direction], StationRect::ADD_TEST)) return CMD_ERROR;
    02223
    02224     if (st->dock_tile != INVALID_TILE) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_DOCK);
    02225   } else {
    02226     /* allocate and initialize new station */
    02227     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    02228
    02229     if (flags & DC_EXEC) {
    02230       st = new Station(tile);
    02231
    02232       st->town = ClosestTownFromTile(tile, UINT_MAX);
    02233       st->string_id = GenerateStationName(st, tile, STATIONNAMING_DOCK);
    02234
    02235       if (Company::IsValidID(_current_company)) {
    02236         SetBit(st->town->have_ratings, _current_company);
    02237       }
    02238     }
    02239   }
    02240
    02241   if (flags & DC_EXEC) {
    02242     st->dock_tile = tile;
    02243     st->AddFacility(FACIL_DOCK, tile);
    02244
    02245     st->rect.BeforeAddRect(
    02246         tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02247         _dock_w_chk[direction], _dock_h_chk[direction], StationRect::ADD_TRY);
    02248
    02249     MakeDock(tile, st->owner, st->index, direction, wc);
    02250
    02251     st->UpdateVirtCoord();
    02252     UpdateStationAcceptance(st, false);
    02253     st->RecomputeIndustriesNear();
    02254     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02255     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02256     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_SHIPS);
    02257   }
    02258
    02259   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_STATION_DOCK]);
    02260 }
    02261
    02268 static CommandCost RemoveDock(TileIndex tile, DoCommandFlag flags)
    02269 {
    02270   Station *st = Station::GetByTile(tile);
    02271   if (!CheckOwnership(st->owner)) return CMD_ERROR;
    02272
    02273   TileIndex tile1 = st->dock_tile;
    02274   TileIndex tile2 = tile1 + TileOffsByDiagDir(GetDockDirection(tile1));
    02275
    02276   if (!EnsureNoVehicleOnGround(tile1)) return CMD_ERROR;
    02277   if (!EnsureNoVehicleOnGround(tile2)) return CMD_ERROR;
    02278
    02279   if (flags & DC_EXEC) {
    02280     DoClearSquare(tile1);
    02281     MakeWaterKeepingClass(tile2, st->owner);
    02282
    02283     st->rect.AfterRemoveTile(st, tile1);
    02284     st->rect.AfterRemoveTile(st, tile2);
    02285
    02286     MarkTileDirtyByTile(tile2);
    02287
    02288     st->dock_tile = INVALID_TILE;
    02289     st->facilities &= ~FACIL_DOCK;
    02290
    02291     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_SHIPS);
    02292     st->UpdateVirtCoord();
    02293     st->RecomputeIndustriesNear();
    02294     DeleteStationIfEmpty(st);
    02295   }
    02296
    02297   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_STATION_DOCK]);
    02298 }
    02299
    02300 #include "table/station_land.h"
    02301
    02302 const DrawTileSprites *GetStationTileLayout(StationType st, byte gfx)
    02303 {
    02304   return &_station_display_datas[st][gfx];
    02305 }
    02306
    02307 static void DrawTile_Station(TileInfo *ti)
    02308 {
    02309   const DrawTileSprites *t = NULL;
    02310   RoadTypes roadtypes;
    02311   int32 total_offset;
    02312   int32 custom_ground_offset;
    02313   uint32 relocation = 0;
    02314   const BaseStation *st = NULL;
    02315   const StationSpec *statspec = NULL;
    02316
    02317   if (HasStationRail(ti->tile)) {
    02318     const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
    02319     roadtypes = ROADTYPES_NONE;
    02320     total_offset = rti->total_offset;
    02321     custom_ground_offset = rti->custom_ground_offset;
    02322
    02323     if (IsCustomStationSpecIndex(ti->tile)) {
    02324       /* look for customization */
    02325       st = BaseStation::GetByTile(ti->tile);
    02326       statspec = st->speclist[GetCustomStationSpecIndex(ti->tile)].spec;
    02327
    02328       if (statspec != NULL) {
    02329         uint tile = GetStationGfx(ti->tile);
    02330
    02331         relocation = GetCustomStationRelocation(statspec, st, ti->tile);
    02332
    02333         if (HasBit(statspec->callback_mask, CBM_STATION_SPRITE_LAYOUT)) {
    02334           uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0, 0, statspec, st, ti->tile);
    02335           if (callback != CALLBACK_FAILED) tile = (callback & ~1) + GetRailStationAxis(ti->tile);
    02336         }
    02337
    02338         /* Ensure the chosen tile layout is valid for this custom station */
    02339         if (statspec->renderdata != NULL) {
    02340           t = &statspec->renderdata[tile < statspec->tiles ? tile : (uint)GetRailStationAxis(ti->tile)];
    02341         }
    02342       }
    02343     }
    02344   } else {
    02345     roadtypes = IsRoadStop(ti->tile) ? GetRoadTypes(ti->tile) : ROADTYPES_NONE;
    02346     total_offset = 0;
    02347     custom_ground_offset = 0;
    02348   }
    02349
    02350   if (IsAirport(ti->tile)) {
    02351     switch (GetStationGfx(ti->tile)) {
    02352       case APT_RADAR_GRASS_FENCE_SW:
    02353         t = &_station_display_datas_airport_radar_grass_fence_sw[GetStationAnimationFrame(ti->tile)];
    02354         break;
    02355       case APT_GRASS_FENCE_NE_FLAG:
    02356         t = &_station_display_datas_airport_flag_grass_fence_ne[GetStationAnimationFrame(ti->tile)];
    02357         break;
    02358       case APT_RADAR_FENCE_SW:
    02359         t = &_station_display_datas_airport_radar_fence_sw[GetStationAnimationFrame(ti->tile)];
    02360         break;
    02361       case APT_RADAR_FENCE_NE:
    02362         t = &_station_display_datas_airport_radar_fence_ne[GetStationAnimationFrame(ti->tile)];
    02363         break;
    02364       case APT_GRASS_FENCE_NE_FLAG_2:
    02365         t = &_station_display_datas_airport_flag_grass_fence_ne_2[GetStationAnimationFrame(ti->tile)];
    02366         break;
    02367     }
    02368   }
    02369
    02370   Owner owner = GetTileOwner(ti->tile);
    02371
    02372   PaletteID palette;
    02373   if (Company::IsValidID(owner)) {
    02374     palette = COMPANY_SPRITE_COLOUR(owner);
    02375   } else {
    02376     /* Some stations are not owner by a company, namely oil rigs */
    02377     palette = PALETTE_TO_GREY;
    02378   }
    02379
    02380   if (t == NULL || t->seq == NULL) t = &_station_display_datas[GetStationType(ti->tile)][GetStationGfx(ti->tile)];
    02381
    02382   /* don't show foundation for docks */
    02383   if (ti->tileh != SLOPE_FLAT && !IsDock(ti->tile)) {
    02384     if (statspec != NULL && HasBit(statspec->flags, SSF_CUSTOM_FOUNDATIONS)) {
    02385       /* Station has custom foundations. */
    02386       SpriteID image = GetCustomStationFoundationRelocation(statspec, st, ti->tile);
    02387
    02388       if (HasBit(statspec->flags, SSF_EXTENDED_FOUNDATIONS)) {
    02389         /* Station provides extended foundations. */
    02390
    02391         static const uint8 foundation_parts[] = {
    02392           0, 0, 0, 0, // Invalid,  Invalid,   Invalid,   SLOPE_SW
    02393           0, 1, 2, 3, // Invalid,  SLOPE_EW,  SLOPE_SE,  SLOPE_WSE
    02394           0, 4, 5, 6, // Invalid,  SLOPE_NW,  SLOPE_NS,  SLOPE_NWS
    02395           7, 8, 9     // SLOPE_NE, SLOPE_ENW, SLOPE_SEN
    02396         };
    02397
    02398         AddSortableSpriteToDraw(image + foundation_parts[ti->tileh], PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02399       } else {
    02400         /* Draw simple foundations, built up from 8 possible foundation sprites. */
    02401
    02402         /* Each set bit represents one of the eight composite sprites to be drawn.
    02403          * 'Invalid' entries will not drawn but are included for completeness. */
    02404         static const uint8 composite_foundation_parts[] = {
    02405           /* Invalid  (00000000), Invalid   (11010001), Invalid   (11100100), SLOPE_SW  (11100000) */
    02406              0x00,                0xD1,                 0xE4,                 0xE0,
    02407           /* Invalid  (11001010), SLOPE_EW  (11001001), SLOPE_SE  (11000100), SLOPE_WSE (11000000) */
    02408              0xCA,                0xC9,                 0xC4,                 0xC0,
    02409           /* Invalid  (11010010), SLOPE_NW  (10010001), SLOPE_NS  (11100100), SLOPE_NWS (10100000) */
    02410              0xD2,                0x91,                 0xE4,                 0xA0,
    02411           /* SLOPE_NE (01001010), SLOPE_ENW (00001001), SLOPE_SEN (01000100) */
    02412              0x4A,                0x09,                 0x44
    02413         };
    02414
    02415         uint8 parts = composite_foundation_parts[ti->tileh];
    02416
    02417         /* If foundations continue beyond the tile's upper sides then
    02418          * mask out the last two pieces. */
    02419         uint z;
    02420         Slope slope = GetFoundationSlope(ti->tile, &z);
    02421         if (!HasFoundationNW(ti->tile, slope, z)) ClrBit(parts, 6);
    02422         if (!HasFoundationNE(ti->tile, slope, z)) ClrBit(parts, 7);
    02423
    02424         StartSpriteCombine();
    02425         for (int i = 0; i < 8; i++) {
    02426           if (HasBit(parts, i)) {
    02427             AddSortableSpriteToDraw(image + i, PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02428           }
    02429         }
    02430         EndSpriteCombine();
    02431       }
    02432
    02433       OffsetGroundSprite(31, 1);
    02434       ti->z += ApplyFoundationToSlope(FOUNDATION_LEVELED, &ti->tileh);
    02435     } else {
    02436       DrawFoundation(ti, FOUNDATION_LEVELED);
    02437     }
    02438   }
    02439
    02440   if (IsBuoy(ti->tile) || IsDock(ti->tile) || (IsOilRig(ti->tile) && GetWaterClass(ti->tile) != WATER_CLASS_INVALID)) {
    02441     if (ti->tileh == SLOPE_FLAT) {
    02442       DrawWaterClassGround(ti);
    02443     } else {
    02444       assert(IsDock(ti->tile));
    02445       TileIndex water_tile = ti->tile + TileOffsByDiagDir(GetDockDirection(ti->tile));
    02446       WaterClass wc = GetWaterClass(water_tile);
    02447       if (wc == WATER_CLASS_SEA) {
    02448         DrawShoreTile(ti->tileh);
    02449       } else {
    02450         DrawClearLandTile(ti, 3);
    02451       }
    02452     }
    02453   } else {
    02454     SpriteID image = t->ground.sprite;
    02455     PaletteID pal  = t->ground.pal;
    02456     if (HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE)) {
    02457       image += GetCustomStationGroundRelocation(statspec, st, ti->tile);
    02458       image += custom_ground_offset;
    02459     } else {
    02460       image += total_offset;
    02461     }
    02462     DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, palette));
    02463
    02464     /* PBS debugging, draw reserved tracks darker */
    02465     if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationRail(ti->tile) && HasStationReservation(ti->tile)) {
    02466       const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
    02467       DrawGroundSprite(GetRailStationAxis(ti->tile) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
    02468     }
    02469   }
    02470
    02471   if (HasStationRail(ti->tile) && HasCatenaryDrawn(GetRailType(ti->tile)) && IsStationTileElectrifiable(ti->tile)) DrawCatenary(ti);
    02472
    02473   if (HasBit(roadtypes, ROADTYPE_TRAM)) {
    02474     Axis axis = GetRoadStopDir(ti->tile) == DIAGDIR_NE ? AXIS_X : AXIS_Y;
    02475     DrawGroundSprite((HasBit(roadtypes, ROADTYPE_ROAD) ? SPR_TRAMWAY_OVERLAY : SPR_TRAMWAY_TRAM) + (axis ^ 1), PAL_NONE);
    02476     DrawTramCatenary(ti, axis == AXIS_X ? ROAD_X : ROAD_Y);
    02477   }
    02478
    02479   if (IsRailWaypoint(ti->tile)) {
    02480     /* Don't offset the waypoint graphics; they're always the same. */
    02481     total_offset = 0;
    02482   }
    02483
    02484   DrawRailTileSeq(ti, t, TO_BUILDINGS, total_offset, relocation, palette);
    02485 }
    02486
    02487 void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, RoadType roadtype, int image)
    02488 {
    02489   int32 total_offset = 0;
    02490   PaletteID pal = COMPANY_SPRITE_COLOUR(_local_company);
    02491   const DrawTileSprites *t = &_station_display_datas[st][image];
    02492
    02493   if (railtype != INVALID_RAILTYPE) {
    02494     const RailtypeInfo *rti = GetRailTypeInfo(railtype);
    02495     total_offset = rti->total_offset;
    02496   }
    02497
    02498   SpriteID img = t->ground.sprite;
    02499   DrawSprite(img + total_offset, HasBit(img, PALETTE_MODIFIER_COLOUR) ? pal : PAL_NONE, x, y);
    02500
    02501   if (roadtype == ROADTYPE_TRAM) {
    02502     DrawSprite(SPR_TRAMWAY_TRAM + (t->ground.sprite == SPR_ROAD_PAVED_STRAIGHT_X ? 1 : 0), PAL_NONE, x, y);
    02503   }
    02504
    02505   /* Default waypoint has no railtype specific sprites */
    02506   DrawRailTileSeqInGUI(x, y, t, st == STATION_WAYPOINT ? 0 : total_offset, 0, pal);
    02507 }
    02508
    02509 static uint GetSlopeZ_Station(TileIndex tile, uint x, uint y)
    02510 {
    02511   return GetTileMaxZ(tile);
    02512 }
    02513
    02514 static Foundation GetFoundation_Station(TileIndex tile, Slope tileh)
    02515 {
    02516   return FlatteningFoundation(tileh);
    02517 }
    02518
    02519 static void GetTileDesc_Station(TileIndex tile, TileDesc *td)
    02520 {
    02521   td->owner[0] = GetTileOwner(tile);
    02522   if (IsDriveThroughStopTile(tile)) {
    02523     Owner road_owner = INVALID_OWNER;
    02524     Owner tram_owner = INVALID_OWNER;
    02525     RoadTypes rts = GetRoadTypes(tile);
    02526     if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    02527     if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    02528
    02529     /* Is there a mix of owners? */
    02530     if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
    02531         (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
    02532       uint i = 1;
    02533       if (road_owner != INVALID_OWNER) {
    02534         td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
    02535         td->owner[i] = road_owner;
    02536         i++;
    02537       }
    02538       if (tram_owner != INVALID_OWNER) {
    02539         td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
    02540         td->owner[i] = tram_owner;
    02541       }
    02542     }
    02543   }
    02544   td->build_date = BaseStation::GetByTile(tile)->build_date;
    02545
    02546   if (HasStationTileRail(tile)) {
    02547     const StationSpec *spec = GetStationSpec(tile);
    02548
    02549     if (spec != NULL) {
    02550       td->station_class = GetStationClassName(spec->sclass);
    02551       td->station_name  = spec->name;
    02552
    02553       if (spec->grffile != NULL) {
    02554         const GRFConfig *gc = GetGRFConfig(spec->grffile->grfid);
    02555         td->grf = gc->name;
    02556       }
    02557     }
    02558   }
    02559
    02560   StringID str;
    02561   switch (GetStationType(tile)) {
    02562     default: NOT_REACHED();
    02563     case STATION_RAIL:     str = STR_LAI_STATION_DESCRIPTION_RAILROAD_STATION; break;
    02564     case STATION_AIRPORT:
    02565       str = (IsHangar(tile) ? STR_LAI_STATION_DESCRIPTION_AIRCRAFT_HANGAR : STR_LAI_STATION_DESCRIPTION_AIRPORT);
    02566       break;
    02567     case STATION_TRUCK:    str = STR_LAI_STATION_DESCRIPTION_TRUCK_LOADING_AREA; break;
    02568     case STATION_BUS:      str = STR_LAI_STATION_DESCRIPTION_BUS_STATION; break;
    02569     case STATION_OILRIG:   str = STR_INDUSTRY_NAME_OIL_RIG; break;
    02570     case STATION_DOCK:     str = STR_LAI_STATION_DESCRIPTION_SHIP_DOCK; break;
    02571     case STATION_BUOY:     str = STR_LAI_STATION_DESCRIPTION_BUOY; break;
    02572     case STATION_WAYPOINT: str = STR_LAI_STATION_DESCRIPTION_WAYPOINT; break;
    02573   }
    02574   td->str = str;
    02575 }
    02576
    02577
    02578 static TrackStatus GetTileTrackStatus_Station(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
    02579 {
    02580   TrackBits trackbits = TRACK_BIT_NONE;
    02581
    02582   switch (mode) {
    02583     case TRANSPORT_RAIL:
    02584       if (HasStationRail(tile) && !IsStationTileBlocked(tile)) {
    02585         trackbits = TrackToTrackBits(GetRailStationTrack(tile));
    02586       }
    02587       break;
    02588
    02589     case TRANSPORT_WATER:
    02590       /* buoy is coded as a station, it is always on open water */
    02591       if (IsBuoy(tile)) {
    02592         trackbits = TRACK_BIT_ALL;
    02593         /* remove tracks that connect NE map edge */
    02594         if (TileX(tile) == 0) trackbits &= ~(TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_RIGHT);
    02595         /* remove tracks that connect NW map edge */
    02596         if (TileY(tile) == 0) trackbits &= ~(TRACK_BIT_Y | TRACK_BIT_LEFT | TRACK_BIT_UPPER);
    02597       }
    02598       break;
    02599
    02600     case TRANSPORT_ROAD:
    02601       if ((GetRoadTypes(tile) & sub_mode) != 0 && IsRoadStop(tile)) {
    02602         DiagDirection dir = GetRoadStopDir(tile);
    02603         Axis axis = DiagDirToAxis(dir);
    02604
    02605         if (side != INVALID_DIAGDIR) {
    02606           if (axis != DiagDirToAxis(side) || (IsStandardRoadStopTile(tile) && dir != side)) break;
    02607         }
    02608
    02609         trackbits = AxisToTrackBits(axis);
    02610       }
    02611       break;
    02612
    02613     default:
    02614       break;
    02615   }
    02616
    02617   return CombineTrackStatus(TrackBitsToTrackdirBits(trackbits), TRACKDIR_BIT_NONE);
    02618 }
    02619
    02620
    02621 static void TileLoop_Station(TileIndex tile)
    02622 {
    02623   /* FIXME -- GetTileTrackStatus_Station -> animated stationtiles
    02624    * hardcoded.....not good */
    02625   switch (GetStationType(tile)) {
    02626     case STATION_AIRPORT:
    02627       if (AirportTileSpec::Get(GetStationGfx(tile))->animation_info != 0xFFFF) {
    02628         AddAnimatedTile(tile);
    02629       }
    02630       break;
    02631
    02632     case STATION_DOCK:
    02633       if (GetTileSlope(tile, NULL) != SLOPE_FLAT) break; // only handle water part
    02634     /* FALL THROUGH */
    02635     case STATION_OILRIG: //(station part)
    02636     case STATION_BUOY:
    02637       TileLoop_Water(tile);
    02638       break;
    02639
    02640     default: break;
    02641   }
    02642 }
    02643
    02644
    02645 static void AnimateTile_Station(TileIndex tile)
    02646 {
    02647   if (HasStationRail(tile)) {
    02648     AnimateStationTile(tile);
    02649     return;
    02650   }
    02651
    02652   if (IsAirport(tile)) {
    02653     const AirportTileSpec *ats = AirportTileSpec::Get(GetStationGfx(tile));
    02654     uint16 mask = (1 << ats->animation_speed) - 1;
    02655     if (ats->animation_info != 0xFFFF && (_tick_counter & mask) == 0) {
    02656       uint8 next_frame = GetStationAnimationFrame(tile) + 1;
    02657       if (next_frame >= GB(ats->animation_info, 0, 8)) next_frame = 0;
    02658       SetStationAnimationFrame(tile, next_frame);
    02659       MarkTileDirtyByTile(tile);
    02660     }
    02661   }
    02662 }
    02663
    02664
    02665 static bool ClickTile_Station(TileIndex tile)
    02666 {
    02667   const BaseStation *st = BaseStation::GetByTile(tile);
    02668
    02669   if (st->facilities & FACIL_WAYPOINT) {
    02670     ShowWaypointWindow(Waypoint::From(st));
    02671   } else if (IsHangar(tile)) {
    02672     ShowDepotWindow(tile, VEH_AIRCRAFT);
    02673   } else {
    02674     ShowStationViewWindow(st->index);
    02675   }
    02676   return true;
    02677 }
    02678
    02679 static VehicleEnterTileStatus VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
    02680 {
    02681   if (v->type == VEH_TRAIN) {
    02682     StationID station_id = GetStationIndex(tile);
    02683     if (!v->current_order.ShouldStopAtStation(v, station_id)) return VETSB_CONTINUE;
    02684     if (!IsRailStation(tile) || !Train::From(v)->IsFrontEngine()) return VETSB_CONTINUE;
    02685
    02686     int station_ahead;
    02687     int station_length;
    02688     int stop = GetTrainStopLocation(station_id, tile, Train::From(v), &station_ahead, &station_length);
    02689
    02690     /* Stop whenever that amount of station ahead + the distance from the
    02691      * begin of the platform to the stop location is longer than the length
    02692      * of the platform. Station ahead 'includes' the current tile where the
    02693      * vehicle is on, so we need to substract that. */
    02694     if (!IsInsideBS(stop + station_ahead, station_length, TILE_SIZE)) return VETSB_CONTINUE;
    02695
    02696     DiagDirection dir = DirToDiagDir(v->direction);
    02697
    02698     x &= 0xF;
    02699     y &= 0xF;
    02700
    02701     if (DiagDirToAxis(dir) != AXIS_X) Swap(x, y);
    02702     if (y == TILE_SIZE / 2) {
    02703       if (dir != DIAGDIR_SE && dir != DIAGDIR_SW) x = TILE_SIZE - 1 - x;
    02704       stop &= TILE_SIZE - 1;
    02705
    02706       if (x == stop) return VETSB_ENTERED_STATION | (VehicleEnterTileStatus)(station_id << VETS_STATION_ID_OFFSET); // enter station
    02707       if (x < stop) {
    02708         uint16 spd;
    02709
    02710         v->vehstatus |= VS_TRAIN_SLOWING;
    02711         spd = max(0, (stop - x) * 20 - 15);
    02712         if (spd < v->cur_speed) v->cur_speed = spd;
    02713       }
    02714     }
    02715   } else if (v->type == VEH_ROAD) {
    02716     RoadVehicle *rv = RoadVehicle::From(v);
    02717     if (rv->state < RVSB_IN_ROAD_STOP && !IsReversingRoadTrackdir((Trackdir)rv->state) && rv->frame == 0) {
    02718       if (IsRoadStop(tile) && rv->IsRoadVehFront()) {
    02719         /* Attempt to allocate a parking bay in a road stop */
    02720         return RoadStop::GetByTile(tile, GetRoadStopType(tile))->Enter(rv) ? VETSB_CONTINUE : VETSB_CANNOT_ENTER;
    02721       }
    02722     }
    02723   }
    02724
    02725   return VETSB_CONTINUE;
    02726 }
    02727
    02734 static bool StationHandleBigTick(BaseStation *st)
    02735 {
    02736   if (!st->IsInUse() && ++st->delete_ctr >= 8) {
    02737     delete st;
    02738     return false;
    02739   }
    02740
    02741   if ((st->facilities & FACIL_WAYPOINT) == 0) UpdateStationAcceptance(Station::From(st), true);
    02742
    02743   return true;
    02744 }
    02745
    02746 static inline void byte_inc_sat(byte *p)
    02747 {
    02748   byte b = *p + 1;
    02749   if (b != 0) *p = b;
    02750 }
    02751
    02752 static void UpdateStationRating(Station *st)
    02753 {
    02754   bool waiting_changed = false;
    02755
    02756   byte_inc_sat(&st->time_since_load);
    02757   byte_inc_sat(&st->time_since_unload);
    02758
    02759   const CargoSpec *cs;
    02760   FOR_ALL_CARGOSPECS(cs) {
    02761     GoodsEntry *ge = &st->goods[cs->Index()];
    02762     /* Slowly increase the rating back to his original level in the case we
    02763      *  didn't deliver cargo yet to this station. This happens when a bribe
    02764      *  failed while you didn't moved that cargo yet to a station. */
    02765     if (!HasBit(ge->acceptance_pickup, GoodsEntry::PICKUP) && ge->rating < INITIAL_STATION_RATING) {
    02766       ge->rating++;
    02767     }
    02768
    02769     /* Only change the rating if we are moving this cargo */
    02770     if (HasBit(ge->acceptance_pickup, GoodsEntry::PICKUP)) {
    02771       byte_inc_sat(&ge->days_since_pickup);
    02772
    02773       bool skip = false;
    02774       int rating = 0;
    02775       uint waiting = ge->cargo.Count();
    02776
    02777       if (HasBit(cs->callback_mask, CBM_CARGO_STATION_RATING_CALC)) {
    02778         /* Perform custom station rating. If it succeeds the speed, days in transit and
    02779          * waiting cargo ratings must not be executed. */
    02780
    02781         /* NewGRFs expect last speed to be 0xFF when no vehicle has arrived yet. */
    02782         uint last_speed = ge->last_speed;
    02783         if (last_speed == 0) last_speed = 0xFF;
    02784
    02785         uint32 var18 = min(ge->days_since_pickup, 0xFF) | (min(waiting, 0xFFFF) << 8) | (min(last_speed, 0xFF) << 24);
    02786         /* Convert to the 'old' vehicle types */
    02787         uint32 var10 = (st->last_vehicle_type == VEH_INVALID) ? 0x0 : (st->last_vehicle_type + 0x10);
    02788         uint16 callback = GetCargoCallback(CBID_CARGO_STATION_RATING_CALC, var10, var18, cs);
    02789         if (callback != CALLBACK_FAILED) {
    02790           skip = true;
    02791           rating = GB(callback, 0, 14);
    02792
    02793           /* Simulate a 15 bit signed value */
    02794           if (HasBit(callback, 14)) rating -= 0x4000;
    02795         }
    02796       }
    02797
    02798       if (!skip) {
    02799         int b = ge->last_speed - 85;
    02800         if (b >= 0) rating += b >> 2;
    02801
    02802         byte days = ge->days_since_pickup;
    02803         if (st->last_vehicle_type == VEH_SHIP) days >>= 2;
    02804         (days > 21) ||
    02805         (rating += 25, days > 12) ||
    02806         (rating += 25, days > 6) ||
    02807         (rating += 45, days > 3) ||
    02808         (rating += 35, true);
    02809
    02810         (rating -= 90, waiting > 1500) ||
    02811         (rating += 55, waiting > 1000) ||
    02812         (rating += 35, waiting > 600) ||
    02813         (rating += 10, waiting > 300) ||
    02814         (rating += 20, waiting > 100) ||
    02815         (rating += 10, true);
    02816       }
    02817
    02818       if (Company::IsValidID(st->owner) && HasBit(st->town->statues, st->owner)) rating += 26;
    02819
    02820       byte age = ge->last_age;
    02821       (age >= 3) ||
    02822       (rating += 10, age >= 2) ||
    02823       (rating += 10, age >= 1) ||
    02824       (rating += 13, true);
    02825
    02826       {
    02827         int or_ = ge->rating; // old rating
    02828
    02829         /* only modify rating in steps of -2, -1, 0, 1 or 2 */
    02830         ge->rating = rating = or_ + Clamp(Clamp(rating, 0, 255) - or_, -2, 2);
    02831
    02832         /* if rating is <= 64 and more than 200 items waiting,
    02833          * remove some random amount of goods from the station */
    02834         if (rating <= 64 && waiting >= 200) {
    02835           int dec = Random() & 0x1F;
    02836           if (waiting < 400) dec &= 7;
    02837           waiting -= dec + 1;
    02838           waiting_changed = true;
    02839         }
    02840
    02841         /* if rating is <= 127 and there are any items waiting, maybe remove some goods. */
    02842         if (rating <= 127 && waiting != 0) {
    02843           uint32 r = Random();
    02844           if (rating <= (int)GB(r, 0, 7)) {
    02845             /* Need to have int, otherwise it will just overflow etc. */
    02846             waiting = max((int)waiting - (int)GB(r, 8, 2) - 1, 0);
    02847             waiting_changed = true;
    02848           }
    02849         }
    02850
    02851         /* At some point we really must cap the cargo. Previously this
    02852          * was a strict 4095, but now we'll have a less strict, but
    02853          * increasingly agressive truncation of the amount of cargo. */
    02854         static const uint WAITING_CARGO_THRESHOLD  = 1 << 12;
    02855         static const uint WAITING_CARGO_CUT_FACTOR = 1 <<  6;
    02856         static const uint MAX_WAITING_CARGO        = 1 << 15;
    02857
    02858         if (waiting > WAITING_CARGO_THRESHOLD) {
    02859           uint difference = waiting - WAITING_CARGO_THRESHOLD;
    02860           waiting -= (difference / WAITING_CARGO_CUT_FACTOR);
    02861
    02862           waiting = min(waiting, MAX_WAITING_CARGO);
    02863           waiting_changed = true;
    02864         }
    02865
    02866         if (waiting_changed) ge->cargo.Truncate(waiting);
    02867       }
    02868     }
    02869   }
    02870
    02871   StationID index = st->index;
    02872   if (waiting_changed) {
    02873     SetWindowDirty(WC_STATION_VIEW, index); // update whole window
    02874   } else {
    02875     SetWindowWidgetDirty(WC_STATION_VIEW, index, SVW_RATINGLIST); // update only ratings list
    02876   }
    02877 }
    02878
    02879 /* called for every station each tick */
    02880 static void StationHandleSmallTick(BaseStation *st)
    02881 {
    02882   if ((st->facilities & FACIL_WAYPOINT) != 0 || !st->IsInUse()) return;
    02883
    02884   byte b = st->delete_ctr + 1;
    02885   if (b >= 185) b = 0;
    02886   st->delete_ctr = b;
    02887
    02888   if (b == 0) UpdateStationRating(Station::From(st));
    02889 }
    02890
    02891 void OnTick_Station()
    02892 {
    02893   if (_game_mode == GM_EDITOR) return;
    02894
    02895   BaseStation *st;
    02896   FOR_ALL_BASE_STATIONS(st) {
    02897     StationHandleSmallTick(st);
    02898
    02899     /* Run 250 tick interval trigger for station animation.
    02900      * Station index is included so that triggers are not all done
    02901      * at the same time. */
    02902     if ((_tick_counter + st->index) % 250 == 0) {
    02903       /* Stop processing this station if it was deleted */
    02904       if (!StationHandleBigTick(st)) continue;
    02905       StationAnimationTrigger(st, st->xy, STAT_ANIM_250_TICKS);
    02906     }
    02907   }
    02908 }
    02909
    02910 void StationMonthlyLoop()
    02911 {
    02912   /* not used */
    02913 }
    02914
    02915
    02916 void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint radius)
    02917 {
    02918   Station *st;
    02919
    02920   FOR_ALL_STATIONS(st) {
    02921     if (st->owner == owner &&
    02922         DistanceManhattan(tile, st->xy) <= radius) {
    02923       for (CargoID i = 0; i < NUM_CARGO; i++) {
    02924         GoodsEntry *ge = &st->goods[i];
    02925
    02926         if (ge->acceptance_pickup != 0) {
    02927           ge->rating = Clamp(ge->rating + amount, 0, 255);
    02928         }
    02929       }
    02930     }
    02931   }
    02932 }
    02933
    02934 static void UpdateStationWaiting(Station *st, CargoID type, uint amount, SourceType source_type, SourceID source_id)
    02935 {
    02936   st->goods[type].cargo.Append(new CargoPacket(st->index, st->xy, amount, source_type, source_id));
    02937   SetBit(st->goods[type].acceptance_pickup, GoodsEntry::PICKUP);
    02938
    02939   StationAnimationTrigger(st, st->xy, STAT_ANIM_NEW_CARGO, type);
    02940
    02941   SetWindowDirty(WC_STATION_VIEW, st->index);
    02942   st->MarkTilesDirty(true);
    02943 }
    02944
    02945 static bool IsUniqueStationName(const char *name)
    02946 {
    02947   const Station *st;
    02948
    02949   FOR_ALL_STATIONS(st) {
    02950     if (st->name != NULL && strcmp(st->name, name) == 0) return false;
    02951   }
    02952
    02953   return true;
    02954 }
    02955
    02964 CommandCost CmdRenameStation(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02965 {
    02966   Station *st = Station::GetIfValid(p1);
    02967   if (st == NULL || !CheckOwnership(st->owner)) return CMD_ERROR;
    02968
    02969   bool reset = StrEmpty(text);
    02970
    02971   if (!reset) {
    02972     if (strlen(text) >= MAX_LENGTH_STATION_NAME_BYTES) return CMD_ERROR;
    02973     if (!IsUniqueStationName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
    02974   }
    02975
    02976   if (flags & DC_EXEC) {
    02977     free(st->name);
    02978     st->name = reset ? NULL : strdup(text);
    02979
    02980     st->UpdateVirtCoord();
    02981     InvalidateWindowData(WC_STATION_LIST, st->owner, 1);
    02982   }
    02983
    02984   return CommandCost();
    02985 }
    02986
    02993 void FindStationsAroundTiles(const TileArea &location, StationList *stations)
    02994 {
    02995   /* area to search = producer plus station catchment radius */
    02996   int max_rad = (_settings_game.station.modified_catchment ? MAX_CATCHMENT : CA_UNMODIFIED);
    02997
    02998   for (int dy = -max_rad; dy < location.h + max_rad; dy++) {
    02999     for (int dx = -max_rad; dx < location.w + max_rad; dx++) {
    03000       TileIndex cur_tile = TileAddWrap(location.tile, dx, dy);
    03001       if (cur_tile == INVALID_TILE || !IsTileType(cur_tile, MP_STATION)) continue;
    03002
    03003       Station *st = Station::GetByTile(cur_tile);
    03004       if (st == NULL) continue;
    03005
    03006       if (_settings_game.station.modified_catchment) {
    03007         int rad = st->GetCatchmentRadius();
    03008         if (dx < -rad || dx >= rad + location.w || dy < -rad || dy >= rad + location.h) continue;
    03009       }
    03010
    03011       /* Insert the station in the set. This will fail if it has
    03012        * already been added.
    03013        */
    03014       stations->Include(st);
    03015     }
    03016   }
    03017 }
    03018
    03023 const StationList *StationFinder::GetStations()
    03024 {
    03025   if (this->tile != INVALID_TILE) {
    03026     FindStationsAroundTiles(*this, &this->stations);
    03027     this->tile = INVALID_TILE;
    03028   }
    03029   return &this->stations;
    03030 }
    03031
    03032 uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations)
    03033 {
    03034   /* Return if nothing to do. Also the rounding below fails for 0. */
    03035   if (amount == 0) return 0;
    03036
    03037   Station *st1 = NULL;   // Station with best rating
    03038   Station *st2 = NULL;   // Second best station
    03039   uint best_rating1 = 0; // rating of st1
    03040   uint best_rating2 = 0; // rating of st2
    03041
    03042   for (Station * const *st_iter = all_stations->Begin(); st_iter != all_stations->End(); ++st_iter) {
    03043     Station *st = *st_iter;
    03044
    03045     /* Is the station reserved exclusively for somebody else? */
    03046     if (st->town->exclusive_counter > 0 && st->town->exclusivity != st->owner) continue;
    03047
    03048     if (st->goods[type].rating == 0) continue; // Lowest possible rating, better not to give cargo anymore
    03049
    03050     if (_settings_game.order.selectgoods && st->goods[type].last_speed == 0) continue; // Selectively servicing stations, and not this one
    03051
    03052     if (IsCargoInClass(type, CC_PASSENGERS)) {
    03053       if (st->facilities == FACIL_TRUCK_STOP) continue; // passengers are never served by just a truck stop
    03054     } else {
    03055       if (st->facilities == FACIL_BUS_STOP) continue; // non-passengers are never served by just a bus stop
    03056     }
    03057
    03058     /* This station can be used, add it to st1/st2 */
    03059     if (st1 == NULL || st->goods[type].rating >= best_rating1) {
    03060       st2 = st1; best_rating2 = best_rating1; st1 = st; best_rating1 = st->goods[type].rating;
    03061     } else if (st2 == NULL || st->goods[type].rating >= best_rating2) {
    03062       st2 = st; best_rating2 = st->goods[type].rating;
    03063     }
    03064   }
    03065
    03066   /* no stations around at all? */
    03067   if (st1 == NULL) return 0;
    03068
    03069   if (st2 == NULL) {
    03070     /* only one station around */
    03071     uint moved = amount * best_rating1 / 256 + 1;
    03072     UpdateStationWaiting(st1, type, moved, source_type, source_id);
    03073     return moved;
    03074   }
    03075
    03076   /* several stations around, the best two (highest rating) are in st1 and st2 */
    03077   assert(st1 != NULL);
    03078   assert(st2 != NULL);
    03079   assert(best_rating1 != 0 || best_rating2 != 0);
    03080
    03081   /* the 2nd highest one gets a penalty */
    03082   best_rating2 >>= 1;
    03083
    03084   /* amount given to station 1 */
    03085   uint t = (best_rating1 * (amount + 1)) / (best_rating1 + best_rating2);
    03086
    03087   uint moved = 0;
    03088   if (t != 0) {
    03089     moved = t * best_rating1 / 256 + 1;
    03090     amount -= t;
    03091     UpdateStationWaiting(st1, type, moved, source_type, source_id);
    03092   }
    03093
    03094   if (amount != 0) {
    03095     amount = amount * best_rating2 / 256 + 1;
    03096     moved += amount;
    03097     UpdateStationWaiting(st2, type, amount, source_type, source_id);
    03098   }
    03099
    03100   return moved;
    03101 }
    03102
    03103 void BuildOilRig(TileIndex tile)
    03104 {
    03105   if (!Station::CanAllocateItem()) {
    03106     DEBUG(misc, 0, "Can't allocate station for oilrig at 0x%X, reverting to oilrig only", tile);
    03107     return;
    03108   }
    03109
    03110   Station *st = new Station(tile);
    03111   st->town = ClosestTownFromTile(tile, UINT_MAX);
    03112
    03113   st->string_id = GenerateStationName(st, tile, STATIONNAMING_OILRIG);
    03114
    03115   assert(IsTileType(tile, MP_INDUSTRY));
    03116   DeleteAnimatedTile(tile);
    03117   MakeOilrig(tile, st->index, GetWaterClass(tile));
    03118
    03119   st->owner = OWNER_NONE;
    03120   st->airport_type = AT_OILRIG;
    03121   st->airport_tile = tile;
    03122   st->dock_tile = tile;
    03123   st->facilities = FACIL_AIRPORT | FACIL_DOCK;
    03124   st->build_date = _date;
    03125
    03126   st->rect.BeforeAddTile(tile, StationRect::ADD_FORCE);
    03127
    03128   for (CargoID j = 0; j < NUM_CARGO; j++) {
    03129     st->goods[j].acceptance_pickup = 0;
    03130     st->goods[j].days_since_pickup = 255;
    03131     st->goods[j].rating = INITIAL_STATION_RATING;
    03132     st->goods[j].last_speed = 0;
    03133     st->goods[j].last_age = 255;
    03134   }
    03135
    03136   st->UpdateVirtCoord();
    03137   UpdateStationAcceptance(st, false);
    03138   st->RecomputeIndustriesNear();
    03139 }
    03140
    03141 void DeleteOilRig(TileIndex tile)
    03142 {
    03143   Station *st = Station::GetByTile(tile);
    03144
    03145   MakeWaterKeepingClass(tile, OWNER_NONE);
    03146   MarkTileDirtyByTile(tile);
    03147
    03148   st->dock_tile = INVALID_TILE;
    03149   st->airport_tile = INVALID_TILE;
    03150   st->facilities &= ~(FACIL_AIRPORT | FACIL_DOCK);
    03151   st->airport_flags = 0;
    03152
    03153   st->rect.AfterRemoveTile(st, tile);
    03154
    03155   st->UpdateVirtCoord();
    03156   st->RecomputeIndustriesNear();
    03157   if (!st->IsInUse()) delete st;
    03158 }
    03159
    03160 static void ChangeTileOwner_Station(TileIndex tile, Owner old_owner, Owner new_owner)
    03161 {
    03162   if (IsDriveThroughStopTile(tile)) {
    03163     for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
    03164       /* Update all roadtypes, no matter if they are present */
    03165       if (GetRoadOwner(tile, rt) == old_owner) {
    03166         SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
    03167       }
    03168     }
    03169   }
    03170
    03171   if (!IsTileOwner(tile, old_owner)) return;
    03172
    03173   if (new_owner != INVALID_OWNER) {
    03174     /* for buoys, owner of tile is owner of water, st->owner == OWNER_NONE */
    03175     SetTileOwner(tile, new_owner);
    03176     InvalidateWindowClassesData(WC_STATION_LIST, 0);
    03177   } else {
    03178     if (IsDriveThroughStopTile(tile)) {
    03179       /* Remove the drive-through road stop */
    03180       DoCommand(tile, 0, (GetStationType(tile) == STATION_TRUCK) ? ROADSTOP_TRUCK : ROADSTOP_BUS, DC_EXEC | DC_BANKRUPT, CMD_REMOVE_ROAD_STOP);
    03181       assert(IsTileType(tile, MP_ROAD));
    03182       /* Change owner of tile and all roadtypes */
    03183       ChangeTileOwner(tile, old_owner, new_owner);
    03184     } else {
    03185       DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
    03186       /* Set tile owner of water under (now removed) buoy and dock to OWNER_NONE.
    03187        * Update owner of buoy if it was not removed (was in orders).
    03188        * Do not update when owned by OWNER_WATER (sea and rivers). */
    03189       if ((IsTileType(tile, MP_WATER) || IsBuoyTile(tile)) && IsTileOwner(tile, old_owner)) SetTileOwner(tile, OWNER_NONE);
    03190     }
    03191   }
    03192 }
    03193
    03202 static bool CanRemoveRoadWithStop(TileIndex tile, DoCommandFlag flags)
    03203 {
    03204   /* Yeah... water can always remove stops, right? */
    03205   if (_current_company == OWNER_WATER) return true;
    03206
    03207   Owner road_owner = _current_company;
    03208   Owner tram_owner = _current_company;
    03209
    03210   RoadTypes rts = GetRoadTypes(tile);
    03211   if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    03212   if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    03213
    03214   if ((road_owner != OWNER_TOWN && !CheckOwnership(road_owner)) || !CheckOwnership(tram_owner)) return false;
    03215
    03216   return road_owner != OWNER_TOWN || CheckAllowRemoveRoad(tile, GetAnyRoadBits(tile, ROADTYPE_ROAD), OWNER_TOWN, ROADTYPE_ROAD, flags);
    03217 }
    03218
    03219 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags)
    03220 {
    03221   if (flags & DC_AUTO) {
    03222     switch (GetStationType(tile)) {
    03223       default: break;
    03224       case STATION_RAIL:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_RAILROAD);
    03225       case STATION_WAYPOINT: return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
    03226       case STATION_AIRPORT:  return_cmd_error(STR_ERROR_MUST_DEMOLISH_AIRPORT_FIRST);
    03227       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);
    03228       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);
    03229       case STATION_BUOY:     return_cmd_error(STR_ERROR_BUOY_IN_THE_WAY);
    03230       case STATION_DOCK:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_DOCK_FIRST);
    03231       case STATION_OILRIG:
    03232         SetDParam(0, STR_INDUSTRY_NAME_OIL_RIG);
    03233         return_cmd_error(STR_ERROR_UNMOVABLE_OBJECT_IN_THE_WAY);
    03234     }
    03235   }
    03236
    03237   switch (GetStationType(tile)) {
    03238     case STATION_RAIL:     return RemoveRailStation(tile, flags);
    03239     case STATION_WAYPOINT: return RemoveRailWaypoint(tile, flags);
    03240     case STATION_AIRPORT:  return RemoveAirport(tile, flags);
    03241     case STATION_TRUCK:
    03242       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags))
    03243         return_cmd_error(STR_ERROR_MUST_DEMOLISH_TRUCK_STATION_FIRST);
    03244       return RemoveRoadStop(tile, flags);
    03245     case STATION_BUS:
    03246       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags))
    03247         return_cmd_error(STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST);
    03248       return RemoveRoadStop(tile, flags);
    03249     case STATION_BUOY:     return RemoveBuoy(tile, flags);
    03250     case STATION_DOCK:     return RemoveDock(tile, flags);
    03251     default: break;
    03252   }
    03253
    03254   return CMD_ERROR;
    03255 }
    03256
    03257 static CommandCost TerraformTile_Station(TileIndex tile, DoCommandFlag flags, uint z_new, Slope tileh_new)
    03258 {
    03259   if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
    03260     /* TODO: If you implement newgrf callback 149 'land slope check', you have to decide what to do with it here.
    03261      *       TTDP does not call it.
    03262      */
    03263     if (!IsSteepSlope(tileh_new) && (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new))) {
    03264       switch (GetStationType(tile)) {
    03265         case STATION_WAYPOINT:
    03266         case STATION_RAIL: {
    03267           DiagDirection direction = AxisToDiagDir(GetRailStationAxis(tile));
    03268           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03269           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03270           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03271         }
    03272
    03273         case STATION_AIRPORT:
    03274           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03275
    03276         case STATION_TRUCK:
    03277         case STATION_BUS: {
    03278           DiagDirection direction = GetRoadStopDir(tile);
    03279           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03280           if (IsDriveThroughStopTile(tile)) {
    03281             if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03282           }
    03283           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03284         }
    03285
    03286         default: break;
    03287       }
    03288     }
    03289   }
    03290   return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    03291 }
    03292
    03293
    03294 extern const TileTypeProcs _tile_type_station_procs = {
    03295   DrawTile_Station,           // draw_tile_proc
    03296   GetSlopeZ_Station,          // get_slope_z_proc
    03297   ClearTile_Station,          // clear_tile_proc
    03298   NULL,                       // add_accepted_cargo_proc
    03299   GetTileDesc_Station,        // get_tile_desc_proc
    03300   GetTileTrackStatus_Station, // get_tile_track_status_proc
    03301   ClickTile_Station,          // click_tile_proc
    03302   AnimateTile_Station,        // animate_tile_proc
    03303   TileLoop_Station,           // tile_loop_clear
    03304   ChangeTileOwner_Station,    // change_tile_owner_clear
    03305   NULL,                       // add_produced_cargo_proc
    03306   VehicleEnter_Station,       // vehicle_enter_tile_proc
    03307   GetFoundation_Station,      // get_foundation_proc
    03308   TerraformTile_Station,      // terraform_tile_proc
    03309 };