# station_cmd.cpp

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    00001 /* $Id: station_cmd.cpp 18726 2010-01-04 21:10:20Z rubidium $ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
    00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
    00008  */
    00009
    00012 #include "stdafx.h"
    00013 #include "openttd.h"
    00014 #include "aircraft.h"
    00015 #include "bridge_map.h"
    00016 #include "cmd_helper.h"
    00017 #include "landscape.h"
    00018 #include "viewport_func.h"
    00019 #include "command_func.h"
    00020 #include "town.h"
    00021 #include "news_func.h"
    00022 #include "train.h"
    00023 #include "roadveh.h"
    00024 #include "industry.h"
    00025 #include "newgrf_cargo.h"
    00026 #include "newgrf_station.h"
    00027 #include "newgrf_commons.h"
    00028 #include "pathfinder/yapf/yapf_cache.h"
    00029 #include "road_internal.h" /* For drawing catenary/checking road removal */
    00030 #include "variables.h"
    00031 #include "autoslope.h"
    00032 #include "water.h"
    00033 #include "station_gui.h"
    00034 #include "strings_func.h"
    00035 #include "functions.h"
    00036 #include "window_func.h"
    00037 #include "date_func.h"
    00038 #include "vehicle_func.h"
    00039 #include "string_func.h"
    00040 #include "animated_tile_func.h"
    00041 #include "elrail_func.h"
    00042 #include "station_base.h"
    00043 #include "roadstop_base.h"
    00044 #include "waypoint_base.h"
    00045 #include "waypoint_func.h"
    00046 #include "pbs.h"
    00047 #include "debug.h"
    00048
    00049 #include "table/strings.h"
    00050
    00057 bool IsHangar(TileIndex t)
    00058 {
    00059   assert(IsTileType(t, MP_STATION));
    00060
    00061   /* If the tile isn't an airport there's no chance it's a hangar. */
    00062   if (!IsAirport(t)) return false;
    00063
    00064   const Station *st = Station::GetByTile(t);
    00065   const AirportFTAClass *apc = st->Airport();
    00066
    00067   for (uint i = 0; i < apc->nof_depots; i++) {
    00068     if (st->airport_tile + ToTileIndexDiff(apc->airport_depots[i]) == t) return true;
    00069   }
    00070
    00071   return false;
    00072 }
    00073
    00081 template <class T>
    00082 bool GetStationAround(TileArea ta, StationID closest_station, T **st)
    00083 {
    00084   /* check around to see if there's any stations there */
    00085   TILE_LOOP(tile_cur, ta.w + 2, ta.h + 2, ta.tile - TileDiffXY(1, 1)) {
    00086     if (IsTileType(tile_cur, MP_STATION)) {
    00087       StationID t = GetStationIndex(tile_cur);
    00088
    00089       if (closest_station == INVALID_STATION) {
    00090         if (T::IsValidID(t)) closest_station = t;
    00091       } else if (closest_station != t) {
    00092         _error_message = STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING;
    00093         return false;
    00094       }
    00095     }
    00096   }
    00097   *st = (closest_station == INVALID_STATION) ? NULL : T::Get(closest_station);
    00098   return true;
    00099 }
    00100
    00106 typedef bool (*CMSAMatcher)(TileIndex tile);
    00107
    00114 static int CountMapSquareAround(TileIndex tile, CMSAMatcher cmp)
    00115 {
    00116   int num = 0;
    00117
    00118   for (int dx = -3; dx <= 3; dx++) {
    00119     for (int dy = -3; dy <= 3; dy++) {
    00120       TileIndex t = TileAddWrap(tile, dx, dy);
    00121       if (t != INVALID_TILE && cmp(t)) num++;
    00122     }
    00123   }
    00124
    00125   return num;
    00126 }
    00127
    00133 static bool CMSAMine(TileIndex tile)
    00134 {
    00135   /* No industry */
    00136   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00137
    00138   const Industry *ind = Industry::GetByTile(tile);
    00139
    00140   /* No extractive industry */
    00141   if ((GetIndustrySpec(ind->type)->life_type & INDUSTRYLIFE_EXTRACTIVE) == 0) return false;
    00142
    00143   for (uint i = 0; i < lengthof(ind->produced_cargo); i++) {
    00144     /* The industry extracts something non-liquid, i.e. no oil or plastic, so it is a mine.
    00145      * Also the production of passengers and mail is ignored. */
    00146     if (ind->produced_cargo[i] != CT_INVALID &&
    00147         (CargoSpec::Get(ind->produced_cargo[i])->classes & (CC_LIQUID | CC_PASSENGERS | CC_MAIL)) == 0) {
    00148       return true;
    00149     }
    00150   }
    00151
    00152   return false;
    00153 }
    00154
    00160 static bool CMSAWater(TileIndex tile)
    00161 {
    00162   return IsTileType(tile, MP_WATER) && IsWater(tile);
    00163 }
    00164
    00170 static bool CMSATree(TileIndex tile)
    00171 {
    00172   return IsTileType(tile, MP_TREES);
    00173 }
    00174
    00180 static bool CMSAForest(TileIndex tile)
    00181 {
    00182   /* No industry */
    00183   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00184
    00185   const Industry *ind = Industry::GetByTile(tile);
    00186
    00187   /* No extractive industry */
    00188   if ((GetIndustrySpec(ind->type)->life_type & INDUSTRYLIFE_ORGANIC) == 0) return false;
    00189
    00190   for (uint i = 0; i < lengthof(ind->produced_cargo); i++) {
    00191     /* The industry produces wood. */
    00192     if (ind->produced_cargo[i] != CT_INVALID && CargoSpec::Get(ind->produced_cargo[i])->label == 'WOOD') return true;
    00193   }
    00194
    00195   return false;
    00196 }
    00197
    00198 #define M(x) ((x) - STR_SV_STNAME)
    00199
    00200 enum StationNaming {
    00201   STATIONNAMING_RAIL,
    00202   STATIONNAMING_ROAD,
    00203   STATIONNAMING_AIRPORT,
    00204   STATIONNAMING_OILRIG,
    00205   STATIONNAMING_DOCK,
    00206   STATIONNAMING_HELIPORT,
    00207 };
    00208
    00210 struct StationNameInformation {
    00211   uint32 free_names;
    00212   bool *indtypes;
    00213 };
    00214
    00223 static bool FindNearIndustryName(TileIndex tile, void *user_data)
    00224 {
    00225   /* All already found industry types */
    00226   StationNameInformation *sni = (StationNameInformation*)user_data;
    00227   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00228
    00229   /* If the station name is undefined it means that it doesn't name a station */
    00230   IndustryType indtype = GetIndustryType(tile);
    00231   if (GetIndustrySpec(indtype)->station_name == STR_UNDEFINED) return false;
    00232
    00233   /* In all cases if an industry that provides a name is found two of
    00234    * the standard names will be disabled. */
    00235   sni->free_names &= ~(1 << M(STR_SV_STNAME_OILFIELD) | 1 << M(STR_SV_STNAME_MINES));
    00236   return !sni->indtypes[indtype];
    00237 }
    00238
    00239 static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming name_class)
    00240 {
    00241   static const uint32 _gen_station_name_bits[] = {
    00242     0,                                       // STATIONNAMING_RAIL
    00243     0,                                       // STATIONNAMING_ROAD
    00244     1U << M(STR_SV_STNAME_AIRPORT),          // STATIONNAMING_AIRPORT
    00245     1U << M(STR_SV_STNAME_OILFIELD),         // STATIONNAMING_OILRIG
    00246     1U << M(STR_SV_STNAME_DOCKS),            // STATIONNAMING_DOCK
    00247     1U << M(STR_SV_STNAME_HELIPORT),         // STATIONNAMING_HELIPORT
    00248   };
    00249
    00250   const Town *t = st->town;
    00251   uint32 free_names = UINT32_MAX;
    00252
    00253   bool indtypes[NUM_INDUSTRYTYPES];
    00254   memset(indtypes, 0, sizeof(indtypes));
    00255
    00256   const Station *s;
    00257   FOR_ALL_STATIONS(s) {
    00258     if (s != st && s->town == t) {
    00259       if (s->indtype != IT_INVALID) {
    00260         indtypes[s->indtype] = true;
    00261         continue;
    00262       }
    00263       uint str = M(s->string_id);
    00264       if (str <= 0x20) {
    00265         if (str == M(STR_SV_STNAME_FOREST)) {
    00266           str = M(STR_SV_STNAME_WOODS);
    00267         }
    00268         ClrBit(free_names, str);
    00269       }
    00270     }
    00271   }
    00272
    00273   TileIndex indtile = tile;
    00274   StationNameInformation sni = { free_names, indtypes };
    00275   if (CircularTileSearch(&indtile, 7, FindNearIndustryName, &sni)) {
    00276     /* An industry has been found nearby */
    00277     IndustryType indtype = GetIndustryType(indtile);
    00278     const IndustrySpec *indsp = GetIndustrySpec(indtype);
    00279     /* STR_NULL means it only disables oil rig/mines */
    00280     if (indsp->station_name != STR_NULL) {
    00281       st->indtype = indtype;
    00282       return STR_SV_STNAME_FALLBACK;
    00283     }
    00284   }
    00285
    00286   /* Oil rigs/mines name could be marked not free by looking for a near by industry. */
    00287   free_names = sni.free_names;
    00288
    00289   /* check default names */
    00290   uint32 tmp = free_names & _gen_station_name_bits[name_class];
    00291   if (tmp != 0) return STR_SV_STNAME + FindFirstBit(tmp);
    00292
    00293   /* check mine? */
    00294   if (HasBit(free_names, M(STR_SV_STNAME_MINES))) {
    00295     if (CountMapSquareAround(tile, CMSAMine) >= 2) {
    00296       return STR_SV_STNAME_MINES;
    00297     }
    00298   }
    00299
    00300   /* check close enough to town to get central as name? */
    00301   if (DistanceMax(tile, t->xy) < 8) {
    00302     if (HasBit(free_names, M(STR_SV_STNAME))) return STR_SV_STNAME;
    00303
    00304     if (HasBit(free_names, M(STR_SV_STNAME_CENTRAL))) return STR_SV_STNAME_CENTRAL;
    00305   }
    00306
    00307   /* Check lakeside */
    00308   if (HasBit(free_names, M(STR_SV_STNAME_LAKESIDE)) &&
    00309       DistanceFromEdge(tile) < 20 &&
    00310       CountMapSquareAround(tile, CMSAWater) >= 5) {
    00311     return STR_SV_STNAME_LAKESIDE;
    00312   }
    00313
    00314   /* Check woods */
    00315   if (HasBit(free_names, M(STR_SV_STNAME_WOODS)) && (
    00316         CountMapSquareAround(tile, CMSATree) >= 8 ||
    00317         CountMapSquareAround(tile, CMSAForest) >= 2)
    00318       ) {
    00319     return _settings_game.game_creation.landscape == LT_TROPIC ? STR_SV_STNAME_FOREST : STR_SV_STNAME_WOODS;
    00320   }
    00321
    00322   /* check elevation compared to town */
    00323   uint z = GetTileZ(tile);
    00324   uint z2 = GetTileZ(t->xy);
    00325   if (z < z2) {
    00326     if (HasBit(free_names, M(STR_SV_STNAME_VALLEY))) return STR_SV_STNAME_VALLEY;
    00327   } else if (z > z2) {
    00328     if (HasBit(free_names, M(STR_SV_STNAME_HEIGHTS))) return STR_SV_STNAME_HEIGHTS;
    00329   }
    00330
    00331   /* check direction compared to town */
    00332   static const int8 _direction_and_table[] = {
    00333     ~( (1 << M(STR_SV_STNAME_WEST))  | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00334     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00335     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (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_EAST)) ),
    00337   };
    00338
    00339   free_names &= _direction_and_table[
    00340     (TileX(tile) < TileX(t->xy)) +
    00341     (TileY(tile) < TileY(t->xy)) * 2];
    00342
    00343   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));
    00344   return (tmp == 0) ? STR_SV_STNAME_FALLBACK : (STR_SV_STNAME + FindFirstBit(tmp));
    00345 }
    00346 #undef M
    00347
    00353 static Station *GetClosestDeletedStation(TileIndex tile)
    00354 {
    00355   uint threshold = 8;
    00356   Station *best_station = NULL;
    00357   Station *st;
    00358
    00359   FOR_ALL_STATIONS(st) {
    00360     if (!st->IsInUse() && st->owner == _current_company) {
    00361       uint cur_dist = DistanceManhattan(tile, st->xy);
    00362
    00363       if (cur_dist < threshold) {
    00364         threshold = cur_dist;
    00365         best_station = st;
    00366       }
    00367     }
    00368   }
    00369
    00370   return best_station;
    00371 }
    00372
    00373
    00374 void Station::GetTileArea(TileArea *ta, StationType type) const
    00375 {
    00376   switch (type) {
    00377     case STATION_RAIL:
    00378       *ta = this->train_station;
    00379       return;
    00380
    00381     case STATION_AIRPORT:
    00382       ta->tile = this->airport_tile;
    00383       ta->w    = this->Airport()->size_x;
    00384       ta->h    = this->Airport()->size_y;
    00385       return;
    00386
    00387     case STATION_TRUCK:
    00388       *ta = this->truck_station;
    00389       return;
    00390
    00391     case STATION_BUS:
    00392       *ta = this->bus_station;
    00393       return;
    00394
    00395     case STATION_DOCK:
    00396     case STATION_OILRIG:
    00397       ta->tile = this->dock_tile;
    00398       break;
    00399
    00400     default: NOT_REACHED();
    00401   }
    00402
    00403   ta->w = 1;
    00404   ta->h = 1;
    00405 }
    00406
    00410 void Station::UpdateVirtCoord()
    00411 {
    00412   Point pt = RemapCoords2(TileX(this->xy) * TILE_SIZE, TileY(this->xy) * TILE_SIZE);
    00413
    00414   pt.y -= 32;
    00415   if ((this->facilities & FACIL_AIRPORT) && this->airport_type == AT_OILRIG) pt.y -= 16;
    00416
    00417   SetDParam(0, this->index);
    00418   SetDParam(1, this->facilities);
    00419   this->sign.UpdatePosition(pt.x, pt.y, STR_VIEWPORT_STATION);
    00420
    00421   SetWindowDirty(WC_STATION_VIEW, this->index);
    00422 }
    00423
    00425 void UpdateAllStationVirtCoords()
    00426 {
    00427   BaseStation *st;
    00428
    00429   FOR_ALL_BASE_STATIONS(st) {
    00430     st->UpdateVirtCoord();
    00431   }
    00432 }
    00433
    00438 static uint GetAcceptanceMask(const Station *st)
    00439 {
    00440   uint mask = 0;
    00441
    00442   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00443     if (HasBit(st->goods[i].acceptance_pickup, GoodsEntry::ACCEPTANCE)) mask |= 1 << i;
    00444   }
    00445   return mask;
    00446 }
    00447
    00451 static void ShowRejectOrAcceptNews(const Station *st, uint num_items, CargoID *cargo, StringID msg)
    00452 {
    00453   for (uint i = 0; i < num_items; i++) {
    00454     SetDParam(i + 1, CargoSpec::Get(cargo[i])->name);
    00455   }
    00456
    00457   SetDParam(0, st->index);
    00458   AddNewsItem(msg, NS_ACCEPTANCE, NR_STATION, st->index);
    00459 }
    00460
    00468 CargoArray GetProductionAroundTiles(TileIndex tile, int w, int h, int rad)
    00469 {
    00470   CargoArray produced;
    00471
    00472   int x = TileX(tile);
    00473   int y = TileY(tile);
    00474
    00475   /* expand the region by rad tiles on each side
    00476    * while making sure that we remain inside the board. */
    00477   int x2 = min(x + w + rad, MapSizeX());
    00478   int x1 = max(x - rad, 0);
    00479
    00480   int y2 = min(y + h + rad, MapSizeY());
    00481   int y1 = max(y - rad, 0);
    00482
    00483   assert(x1 < x2);
    00484   assert(y1 < y2);
    00485   assert(w > 0);
    00486   assert(h > 0);
    00487
    00488   TileArea ta(TileXY(x1, y1), TileXY(x2 - 1, y2 - 1));
    00489
    00490   /* Loop over all tiles to get the produced cargo of
    00491    * everything except industries */
    00492   TILE_AREA_LOOP(tile, ta) AddProducedCargo(tile, produced);
    00493
    00494   /* Loop over the industries. They produce cargo for
    00495    * anything that is within 'rad' from their bounding
    00496    * box. As such if you have e.g. a oil well the tile
    00497    * area loop might not hit an industry tile while
    00498    * the industry would produce cargo for the station.
    00499    */
    00500   const Industry *i;
    00501   FOR_ALL_INDUSTRIES(i) {
    00502     if (!ta.Intersects(i->location)) continue;
    00503
    00504     for (uint j = 0; j < lengthof(i->produced_cargo); j++) {
    00505       CargoID cargo = i->produced_cargo[j];
    00506       if (cargo != CT_INVALID) produced[cargo]++;
    00507     }
    00508   }
    00509
    00510   return produced;
    00511 }
    00512
    00521 CargoArray GetAcceptanceAroundTiles(TileIndex tile, int w, int h, int rad, uint32 *always_accepted)
    00522 {
    00523   CargoArray acceptance;
    00524   if (always_accepted != NULL) *always_accepted = 0;
    00525
    00526   int x = TileX(tile);
    00527   int y = TileY(tile);
    00528
    00529   /* expand the region by rad tiles on each side
    00530    * while making sure that we remain inside the board. */
    00531   int x2 = min(x + w + rad, MapSizeX());
    00532   int y2 = min(y + h + rad, MapSizeY());
    00533   int x1 = max(x - rad, 0);
    00534   int y1 = max(y - rad, 0);
    00535
    00536   assert(x1 < x2);
    00537   assert(y1 < y2);
    00538   assert(w > 0);
    00539   assert(h > 0);
    00540
    00541   for (int yc = y1; yc != y2; yc++) {
    00542     for (int xc = x1; xc != x2; xc++) {
    00543       TileIndex tile = TileXY(xc, yc);
    00544       AddAcceptedCargo(tile, acceptance, always_accepted);
    00545     }
    00546   }
    00547
    00548   return acceptance;
    00549 }
    00550
    00555 void UpdateStationAcceptance(Station *st, bool show_msg)
    00556 {
    00557   /* old accepted goods types */
    00558   uint old_acc = GetAcceptanceMask(st);
    00559
    00560   /* And retrieve the acceptance. */
    00561   CargoArray acceptance;
    00562   if (!st->rect.IsEmpty()) {
    00563     acceptance = GetAcceptanceAroundTiles(
    00564       TileXY(st->rect.left, st->rect.top),
    00565       st->rect.right  - st->rect.left + 1,
    00566       st->rect.bottom - st->rect.top  + 1,
    00567       st->GetCatchmentRadius(),
    00568       &st->always_accepted
    00569     );
    00570   }
    00571
    00572   /* Adjust in case our station only accepts fewer kinds of goods */
    00573   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00574     uint amt = min(acceptance[i], 15);
    00575
    00576     /* Make sure the station can accept the goods type. */
    00577     bool is_passengers = IsCargoInClass(i, CC_PASSENGERS);
    00578     if ((!is_passengers && !(st->facilities & ~FACIL_BUS_STOP)) ||
    00579         (is_passengers && !(st->facilities & ~FACIL_TRUCK_STOP))) {
    00580       amt = 0;
    00581     }
    00582
    00583     SB(st->goods[i].acceptance_pickup, GoodsEntry::ACCEPTANCE, 1, amt >= 8);
    00584   }
    00585
    00586   /* Only show a message in case the acceptance was actually changed. */
    00587   uint new_acc = GetAcceptanceMask(st);
    00588   if (old_acc == new_acc) return;
    00589
    00590   /* show a message to report that the acceptance was changed? */
    00591   if (show_msg && st->owner == _local_company && st->IsInUse()) {
    00592     /* List of accept and reject strings for different number of
    00593      * cargo types */
    00594     static const StringID accept_msg[] = {
    00595       STR_NEWS_STATION_NOW_ACCEPTS_CARGO,
    00596       STR_NEWS_STATION_NOW_ACCEPTS_CARGO_AND_CARGO,
    00597     };
    00598     static const StringID reject_msg[] = {
    00599       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO,
    00600       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO_OR_CARGO,
    00601     };
    00602
    00603     /* Array of accepted and rejected cargo types */
    00604     CargoID accepts[2] = { CT_INVALID, CT_INVALID };
    00605     CargoID rejects[2] = { CT_INVALID, CT_INVALID };
    00606     uint num_acc = 0;
    00607     uint num_rej = 0;
    00608
    00609     /* Test each cargo type to see if its acceptange has changed */
    00610     for (CargoID i = 0; i < NUM_CARGO; i++) {
    00611       if (HasBit(new_acc, i)) {
    00612         if (!HasBit(old_acc, i) && num_acc < lengthof(accepts)) {
    00613           /* New cargo is accepted */
    00614           accepts[num_acc++] = i;
    00615         }
    00616       } else {
    00617         if (HasBit(old_acc, i) && num_rej < lengthof(rejects)) {
    00618           /* Old cargo is no longer accepted */
    00619           rejects[num_rej++] = i;
    00620         }
    00621       }
    00622     }
    00623
    00624     /* Show news message if there are any changes */
    00625     if (num_acc > 0) ShowRejectOrAcceptNews(st, num_acc, accepts, accept_msg[num_acc - 1]);
    00626     if (num_rej > 0) ShowRejectOrAcceptNews(st, num_rej, rejects, reject_msg[num_rej - 1]);
    00627   }
    00628
    00629   /* redraw the station view since acceptance changed */
    00630   SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_ACCEPTLIST);
    00631 }
    00632
    00633 static void UpdateStationSignCoord(BaseStation *st)
    00634 {
    00635   const StationRect *r = &st->rect;
    00636
    00637   if (r->IsEmpty()) return; // no tiles belong to this station
    00638
    00639   /* clamp sign coord to be inside the station rect */
    00640   st->xy = TileXY(ClampU(TileX(st->xy), r->left, r->right), ClampU(TileY(st->xy), r->top, r->bottom));
    00641   st->UpdateVirtCoord();
    00642 }
    00643
    00649 static void DeleteStationIfEmpty(BaseStation *st)
    00650 {
    00651   if (!st->IsInUse()) {
    00652     st->delete_ctr = 0;
    00653     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    00654   }
    00655   /* station remains but it probably lost some parts - station sign should stay in the station boundaries */
    00656   UpdateStationSignCoord(st);
    00657 }
    00658
    00659 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags);
    00660
    00672 CommandCost CheckFlatLandBelow(TileIndex tile, uint w, uint h, DoCommandFlag flags, uint invalid_dirs, StationID *station, bool check_clear = true, RailType rt = INVALID_RAILTYPE)
    00673 {
    00674   CommandCost cost(EXPENSES_CONSTRUCTION);
    00675   int allowed_z = -1;
    00676
    00677   TILE_LOOP(tile_cur, w, h, tile) {
    00678     if (MayHaveBridgeAbove(tile_cur) && IsBridgeAbove(tile_cur)) {
    00679       return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    00680     }
    00681
    00682     if (!EnsureNoVehicleOnGround(tile_cur)) return CMD_ERROR;
    00683
    00684     uint z;
    00685     Slope tileh = GetTileSlope(tile_cur, &z);
    00686
    00687     /* Prohibit building if
    00688      *   1) The tile is "steep" (i.e. stretches two height levels)
    00689      *   2) The tile is non-flat and the build_on_slopes switch is disabled
    00690      */
    00691     if (IsSteepSlope(tileh) ||
    00692         ((!_settings_game.construction.build_on_slopes) && tileh != SLOPE_FLAT)) {
    00693       return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00694     }
    00695
    00696     int flat_z = z;
    00697     if (tileh != SLOPE_FLAT) {
    00698       /* need to check so the entrance to the station is not pointing at a slope.
    00699        * This must be valid for all station tiles, as the user can remove single station tiles. */
    00700       if ((HasBit(invalid_dirs, DIAGDIR_NE) && !(tileh & SLOPE_NE)) ||
    00701           (HasBit(invalid_dirs, DIAGDIR_SE) && !(tileh & SLOPE_SE)) ||
    00702           (HasBit(invalid_dirs, DIAGDIR_SW) && !(tileh & SLOPE_SW)) ||
    00703           (HasBit(invalid_dirs, DIAGDIR_NW) && !(tileh & SLOPE_NW))) {
    00704         return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00705       }
    00706       cost.AddCost(_price[PR_BUILD_FOUNDATION]);
    00707       flat_z += TILE_HEIGHT;
    00708     }
    00709
    00710     /* get corresponding flat level and make sure that all parts of the station have the same level. */
    00711     if (allowed_z == -1) {
    00712       /* first tile */
    00713       allowed_z = flat_z;
    00714     } else if (allowed_z != flat_z) {
    00715       return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00716     }
    00717
    00718     /* if station is set, then we have special handling to allow building on top of already existing stations.
    00719      * so station points to INVALID_STATION if we can build on any station.
    00720      * Or it points to a station if we're only allowed to build on exactly that station. */
    00721     if (station != NULL && IsTileType(tile_cur, MP_STATION)) {
    00722       if (!IsRailStation(tile_cur)) {
    00723         return ClearTile_Station(tile_cur, DC_AUTO); // get error message
    00724       } else {
    00725         StationID st = GetStationIndex(tile_cur);
    00726         if (*station == INVALID_STATION) {
    00727           *station = st;
    00728         } else if (*station != st) {
    00729           return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00730         }
    00731       }
    00732     } else if (check_clear) {
    00733       /* Rail type is only valid when building a railway station; in station to
    00734        * build isn't a rail station it's INVALID_RAILTYPE. */
    00735       if (rt != INVALID_RAILTYPE &&
    00736           IsPlainRailTile(tile_cur) && !HasSignals(tile_cur) &&
    00737           HasPowerOnRail(GetRailType(tile_cur), rt)) {
    00738         /* Allow overbuilding if the tile:
    00739          *  - has rail, but no signals
    00740          *  - it has exactly one track
    00741          *  - the track is in line with the station
    00742          *  - the current rail type has power on the to-be-built type (e.g. convert normal rail to el rail)
    00743          */
    00744         TrackBits tracks = GetTrackBits(tile_cur);
    00745         Track track = RemoveFirstTrack(&tracks);
    00746         Track expected_track = HasBit(invalid_dirs, DIAGDIR_NE) ? TRACK_X : TRACK_Y;
    00747
    00748         if (tracks == TRACK_BIT_NONE && track == expected_track) {
    00749           CommandCost ret = DoCommand(tile_cur, 0, track, flags, CMD_REMOVE_SINGLE_RAIL);
    00750           if (CmdFailed(ret)) return ret;
    00751           cost.AddCost(ret);
    00752           /* With flags & ~DC_EXEC CmdLandscapeClear would fail since the rail still exists */
    00753           continue;
    00754         }
    00755       }
    00756       CommandCost ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00757       if (CmdFailed(ret)) return ret;
    00758       cost.AddCost(ret);
    00759     }
    00760   }
    00761
    00762   return cost;
    00763 }
    00764
    00772 bool CanExpandRailStation(const BaseStation *st, TileArea &new_ta, Axis axis)
    00773 {
    00774   TileArea cur_ta = st->train_station;
    00775
    00776   if (_settings_game.station.nonuniform_stations) {
    00777     /* determine new size of train station region.. */
    00778     int x = min(TileX(cur_ta.tile), TileX(new_ta.tile));
    00779     int y = min(TileY(cur_ta.tile), TileY(new_ta.tile));
    00780     new_ta.w = max(TileX(cur_ta.tile) + cur_ta.w, TileX(new_ta.tile) + new_ta.w) - x;
    00781     new_ta.h = max(TileY(cur_ta.tile) + cur_ta.h, TileY(new_ta.tile) + new_ta.h) - y;
    00782     new_ta.tile = TileXY(x, y);
    00783   } else {
    00784     /* do not allow modifying non-uniform stations,
    00785      * the uniform-stations code wouldn't handle it well */
    00786     TILE_LOOP(t, cur_ta.w, cur_ta.h, cur_ta.tile) {
    00787       if (!st->TileBelongsToRailStation(t)) { // there may be adjoined station
    00788         _error_message = STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED;
    00789         return false;
    00790       }
    00791     }
    00792
    00793     /* check so the orientation is the same */
    00794     if (GetRailStationAxis(cur_ta.tile) != axis) {
    00795       _error_message = STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED;
    00796       return false;
    00797     }
    00798
    00799     /* check if the new station adjoins the old station in either direction */
    00800     if (cur_ta.w == new_ta.w && cur_ta.tile == new_ta.tile + TileDiffXY(0, new_ta.h)) {
    00801       /* above */
    00802       new_ta.h += cur_ta.h;
    00803     } else if (cur_ta.w == new_ta.w && cur_ta.tile == new_ta.tile - TileDiffXY(0, cur_ta.h)) {
    00804       /* below */
    00805       new_ta.tile = cur_ta.tile;
    00806       new_ta.h += new_ta.h;
    00807     } else if (cur_ta.h == new_ta.h && cur_ta.tile == new_ta.tile + TileDiffXY(new_ta.w, 0)) {
    00808       /* to the left */
    00809       new_ta.w += cur_ta.w;
    00810     } else if (cur_ta.h == new_ta.h && cur_ta.tile == new_ta.tile - TileDiffXY(cur_ta.w, 0)) {
    00811       /* to the right */
    00812       new_ta.tile = cur_ta.tile;
    00813       new_ta.w += cur_ta.w;
    00814     } else {
    00815       _error_message = STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED;
    00816       return false;
    00817     }
    00818   }
    00819   /* make sure the final size is not too big. */
    00820   if (new_ta.w > _settings_game.station.station_spread || new_ta.h > _settings_game.station.station_spread) {
    00821     _error_message = STR_ERROR_STATION_TOO_SPREAD_OUT;
    00822     return false;
    00823   }
    00824
    00825   return true;
    00826 }
    00827
    00828 static inline byte *CreateSingle(byte *layout, int n)
    00829 {
    00830   int i = n;
    00831   do *layout++ = 0; while (--i);
    00832   layout[((n - 1) >> 1) - n] = 2;
    00833   return layout;
    00834 }
    00835
    00836 static inline byte *CreateMulti(byte *layout, int n, byte b)
    00837 {
    00838   int i = n;
    00839   do *layout++ = b; while (--i);
    00840   if (n > 4) {
    00841     layout[0 - n] = 0;
    00842     layout[n - 1 - n] = 0;
    00843   }
    00844   return layout;
    00845 }
    00846
    00847 void GetStationLayout(byte *layout, int numtracks, int plat_len, const StationSpec *statspec)
    00848 {
    00849   if (statspec != NULL && statspec->lengths >= plat_len &&
    00850       statspec->platforms[plat_len - 1] >= numtracks &&
    00851       statspec->layouts[plat_len - 1][numtracks - 1]) {
    00852     /* Custom layout defined, follow it. */
    00853     memcpy(layout, statspec->layouts[plat_len - 1][numtracks - 1],
    00854       plat_len * numtracks);
    00855     return;
    00856   }
    00857
    00858   if (plat_len == 1) {
    00859     CreateSingle(layout, numtracks);
    00860   } else {
    00861     if (numtracks & 1) layout = CreateSingle(layout, plat_len);
    00862     numtracks >>= 1;
    00863
    00864     while (--numtracks >= 0) {
    00865       layout = CreateMulti(layout, plat_len, 4);
    00866       layout = CreateMulti(layout, plat_len, 6);
    00867     }
    00868   }
    00869 }
    00870
    00882 template <class T, StringID error_message>
    00883 CommandCost FindJoiningBaseStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, T **st)
    00884 {
    00885   assert(*st == NULL);
    00886   bool check_surrounding = true;
    00887
    00888   if (_settings_game.station.adjacent_stations) {
    00889     if (existing_station != INVALID_STATION) {
    00890       if (adjacent && existing_station != station_to_join) {
    00891         /* You can't build an adjacent station over the top of one that
    00892          * already exists. */
    00893         return_cmd_error(error_message);
    00894       } else {
    00895         /* Extend the current station, and don't check whether it will
    00896          * be near any other stations. */
    00897         *st = T::GetIfValid(existing_station);
    00898         check_surrounding = (*st == NULL);
    00899       }
    00900     } else {
    00901       /* There's no station here. Don't check the tiles surrounding this
    00902        * one if the company wanted to build an adjacent station. */
    00903       if (adjacent) check_surrounding = false;
    00904     }
    00905   }
    00906
    00907   if (check_surrounding) {
    00908     /* Make sure there are no similar stations around us. */
    00909     if (!GetStationAround(ta, existing_station, st)) return CMD_ERROR;
    00910   }
    00911
    00912   /* Distant join */
    00913   if (*st == NULL && station_to_join != INVALID_STATION) *st = T::GetIfValid(station_to_join);
    00914
    00915   return CommandCost();;
    00916 }
    00917
    00927 static CommandCost FindJoiningStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
    00928 {
    00929   return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_RAILWAY_STATION_FIRST>(existing_station, station_to_join, adjacent, ta, st);
    00930 }
    00931
    00941 CommandCost FindJoiningWaypoint(StationID existing_waypoint, StationID waypoint_to_join, bool adjacent, TileArea ta, Waypoint **wp)
    00942 {
    00943   return FindJoiningBaseStation<Waypoint, STR_ERROR_MUST_REMOVE_RAILWAYPOINT_FIRST>(existing_waypoint, waypoint_to_join, adjacent, ta, wp);
    00944 }
    00945
    00963 CommandCost CmdBuildRailStation(TileIndex tile_org, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    00964 {
    00965   /* Unpack parameters */
    00966   RailType rt    = (RailType)GB(p1, 0, 4);
    00967   Axis axis      = Extract<Axis, 4>(p1);
    00968   byte numtracks = GB(p1,  8, 8);
    00969   byte plat_len  = GB(p1, 16, 8);
    00970   bool adjacent  = HasBit(p1, 24);
    00971
    00972   StationClassID spec_class = (StationClassID)GB(p2, 0, 8);
    00973   byte spec_index           = GB(p2, 8, 8);
    00974   StationID station_to_join = GB(p2, 16, 16);
    00975
    00976   /* Does the authority allow this? */
    00977   if (!CheckIfAuthorityAllowsNewStation(tile_org, flags)) return CMD_ERROR;
    00978   if (!ValParamRailtype(rt)) return CMD_ERROR;
    00979
    00980   /* Check if the given station class is valid */
    00981   if ((uint)spec_class >= GetNumStationClasses()) return CMD_ERROR;
    00982   if (spec_index >= GetNumCustomStations(spec_class)) return CMD_ERROR;
    00983   if (plat_len == 0 || numtracks == 0) return CMD_ERROR;
    00984
    00985   int w_org, h_org;
    00986   if (axis == AXIS_X) {
    00987     w_org = plat_len;
    00988     h_org = numtracks;
    00989   } else {
    00990     h_org = plat_len;
    00991     w_org = numtracks;
    00992   }
    00993
    00994   bool reuse = (station_to_join != NEW_STATION);
    00995   if (!reuse) station_to_join = INVALID_STATION;
    00996   bool distant_join = (station_to_join != INVALID_STATION);
    00997
    00998   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    00999
    01000   if (h_org > _settings_game.station.station_spread || w_org > _settings_game.station.station_spread) return CMD_ERROR;
    01001
    01002   /* these values are those that will be stored in train_tile and station_platforms */
    01003   TileArea new_location(tile_org, w_org, h_org);
    01004
    01005   /* Make sure the area below consists of clear tiles. (OR tiles belonging to a certain rail station) */
    01006   StationID est = INVALID_STATION;
    01007   /* If DC_EXEC is in flag, do not want to pass it to CheckFlatLandBelow, because of a nice bug
    01008    * for detail info, see:
    01009    * https://sourceforge.net/tracker/index.php?func=detail&aid=1029064&group_id=103924&atid=636365 */
    01010   CommandCost ret = CheckFlatLandBelow(tile_org, w_org, h_org, flags & ~DC_EXEC, 5 << axis, _settings_game.station.nonuniform_stations ? &est : NULL, true, rt);
    01011   if (CmdFailed(ret)) return ret;
    01012   CommandCost cost(EXPENSES_CONSTRUCTION, ret.GetCost() + (numtracks * _price[PR_BUILD_STATION_RAIL] + _price[PR_BUILD_STATION_RAIL_LENGTH]) * plat_len);
    01013
    01014   Station *st = NULL;
    01015   ret = FindJoiningStation(est, station_to_join, adjacent, new_location, &st);
    01016   if (CmdFailed(ret)) return ret;
    01017
    01018   /* See if there is a deleted station close to us. */
    01019   if (st == NULL && reuse) st = GetClosestDeletedStation(tile_org);
    01020
    01021   if (st != NULL) {
    01022     /* Reuse an existing station. */
    01023     if (st->owner != _current_company)
    01024       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01025
    01026     if (st->train_station.tile != INVALID_TILE) {
    01027       /* check if we want to expanding an already existing station? */
    01028       if (!_settings_game.station.join_stations)
    01029         return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_RAILROAD);
    01030       if (!CanExpandRailStation(st, new_location, axis))
    01031         return CMD_ERROR;
    01032     }
    01033
    01034     /* XXX can't we pack this in the "else" part of the if above? */
    01035     if (!st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TEST)) return CMD_ERROR;
    01036   } else {
    01037     /* allocate and initialize new station */
    01038     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01039
    01040     if (flags & DC_EXEC) {
    01041       st = new Station(tile_org);
    01042
    01043       st->town = ClosestTownFromTile(tile_org, UINT_MAX);
    01044       st->string_id = GenerateStationName(st, tile_org, STATIONNAMING_RAIL);
    01045
    01046       if (Company::IsValidID(_current_company)) {
    01047         SetBit(st->town->have_ratings, _current_company);
    01048       }
    01049     }
    01050   }
    01051
    01052   /* Check if we can allocate a custom stationspec to this station */
    01053   const StationSpec *statspec = GetCustomStationSpec(spec_class, spec_index);
    01054   int specindex = AllocateSpecToStation(statspec, st, (flags & DC_EXEC) != 0);
    01055   if (specindex == -1) return_cmd_error(STR_ERROR_TOO_MANY_STATION_SPECS);
    01056
    01057   if (statspec != NULL) {
    01058     /* Perform NewStation checks */
    01059
    01060     /* Check if the station size is permitted */
    01061     if (HasBit(statspec->disallowed_platforms, numtracks - 1) || HasBit(statspec->disallowed_lengths, plat_len - 1)) {
    01062       return CMD_ERROR;
    01063     }
    01064
    01065     /* Check if the station is buildable */
    01066     if (HasBit(statspec->callback_mask, CBM_STATION_AVAIL) && GB(GetStationCallback(CBID_STATION_AVAILABILITY, 0, 0, statspec, NULL, INVALID_TILE), 0, 8) == 0) {
    01067       return CMD_ERROR;
    01068     }
    01069   }
    01070
    01071   if (flags & DC_EXEC) {
    01072     TileIndexDiff tile_delta;
    01073     byte *layout_ptr;
    01074     byte numtracks_orig;
    01075     Track track;
    01076
    01077     /* Now really clear the land below the station
    01078      * It should never return CMD_ERROR.. but you never know ;)
    01079      * (a bit strange function name for it, but it really does clear the land, when DC_EXEC is in flags) */
    01080     ret = CheckFlatLandBelow(tile_org, w_org, h_org, flags, 5 << axis, _settings_game.station.nonuniform_stations ? &est : NULL, true, rt);
    01081     if (CmdFailed(ret)) return ret;
    01082
    01083     st->train_station = new_location;
    01084     st->AddFacility(FACIL_TRAIN, new_location.tile);
    01085
    01086     st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TRY);
    01087
    01088     if (statspec != NULL) {
    01089       /* Include this station spec's animation trigger bitmask
    01090        * in the station's cached copy. */
    01091       st->cached_anim_triggers |= statspec->anim_triggers;
    01092     }
    01093
    01094     tile_delta = (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
    01095     track = AxisToTrack(axis);
    01096
    01097     layout_ptr = AllocaM(byte, numtracks * plat_len);
    01098     GetStationLayout(layout_ptr, numtracks, plat_len, statspec);
    01099
    01100     numtracks_orig = numtracks;
    01101
    01102     SmallVector<Train*, 4> affected_vehicles;
    01103     do {
    01104       TileIndex tile = tile_org;
    01105       int w = plat_len;
    01106       do {
    01107         byte layout = *layout_ptr++;
    01108         if (IsRailStationTile(tile) && HasStationReservation(tile)) {
    01109           /* Check for trains having a reservation for this tile. */
    01110           Train *v = GetTrainForReservation(tile, AxisToTrack(GetRailStationAxis(tile)));
    01111           if (v != NULL) {
    01112             FreeTrainTrackReservation(v);
    01113             *affected_vehicles.Append() = v;
    01114             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01115             for (; v->Next() != NULL; v = v->Next()) { }
    01116             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), false);
    01117           }
    01118         }
    01119
    01120         /* Remove animation if overbuilding */
    01121         DeleteAnimatedTile(tile);
    01122         byte old_specindex = IsTileType(tile, MP_STATION) ? GetCustomStationSpecIndex(tile) : 0;
    01123         MakeRailStation(tile, st->owner, st->index, axis, layout & ~1, rt);
    01124         /* Free the spec if we overbuild something */
    01125         DeallocateSpecFromStation(st, old_specindex);
    01126
    01127         SetCustomStationSpecIndex(tile, specindex);
    01128         SetStationTileRandomBits(tile, GB(Random(), 0, 4));
    01129         SetStationAnimationFrame(tile, 0);
    01130
    01131         if (statspec != NULL) {
    01132           /* Use a fixed axis for GetPlatformInfo as our platforms / numtracks are always the right way around */
    01133           uint32 platinfo = GetPlatformInfo(AXIS_X, 0, plat_len, numtracks_orig, plat_len - w, numtracks_orig - numtracks, false);
    01134
    01135           /* As the station is not yet completely finished, the station does not yet exist. */
    01136           uint16 callback = GetStationCallback(CBID_STATION_TILE_LAYOUT, platinfo, 0, statspec, NULL, tile);
    01137           if (callback != CALLBACK_FAILED && callback < 8) SetStationGfx(tile, (callback & ~1) + axis);
    01138
    01139           /* Trigger station animation -- after building? */
    01140           StationAnimationTrigger(st, tile, STAT_ANIM_BUILT);
    01141         }
    01142
    01143         tile += tile_delta;
    01144       } while (--w);
    01145       AddTrackToSignalBuffer(tile_org, track, _current_company);
    01146       YapfNotifyTrackLayoutChange(tile_org, track);
    01147       tile_org += tile_delta ^ TileDiffXY(1, 1); // perpendicular to tile_delta
    01148     } while (--numtracks);
    01149
    01150     for (uint i = 0; i < affected_vehicles.Length(); ++i) {
    01151       /* Restore reservations of trains. */
    01152       Train *v = affected_vehicles[i];
    01153       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01154       TryPathReserve(v, true, true);
    01155       for (; v->Next() != NULL; v = v->Next()) { }
    01156       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01157     }
    01158
    01159     st->MarkTilesDirty(false);
    01160     st->UpdateVirtCoord();
    01161     UpdateStationAcceptance(st, false);
    01162     st->RecomputeIndustriesNear();
    01163     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01164     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01165     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01166   }
    01167
    01168   return cost;
    01169 }
    01170
    01171 static void MakeRailStationAreaSmaller(BaseStation *st)
    01172 {
    01173   TileArea ta = st->train_station;
    01174
    01175 restart:
    01176
    01177   /* too small? */
    01178   if (ta.w != 0 && ta.h != 0) {
    01179     /* check the left side, x = constant, y changes */
    01180     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(0, i));) {
    01181       /* the left side is unused? */
    01182       if (++i == ta.h) {
    01183         ta.tile += TileDiffXY(1, 0);
    01184         ta.w--;
    01185         goto restart;
    01186       }
    01187     }
    01188
    01189     /* check the right side, x = constant, y changes */
    01190     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(ta.w - 1, i));) {
    01191       /* the right side is unused? */
    01192       if (++i == ta.h) {
    01193         ta.w--;
    01194         goto restart;
    01195       }
    01196     }
    01197
    01198     /* check the upper side, y = constant, x changes */
    01199     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, 0));) {
    01200       /* the left side is unused? */
    01201       if (++i == ta.w) {
    01202         ta.tile += TileDiffXY(0, 1);
    01203         ta.h--;
    01204         goto restart;
    01205       }
    01206     }
    01207
    01208     /* check the lower side, y = constant, x changes */
    01209     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, ta.h - 1));) {
    01210       /* the left side is unused? */
    01211       if (++i == ta.w) {
    01212         ta.h--;
    01213         goto restart;
    01214       }
    01215     }
    01216   } else {
    01217     ta.Clear();
    01218   }
    01219
    01220   st->train_station = ta;
    01221 }
    01222
    01233 template <class T>
    01234 CommandCost RemoveFromRailBaseStation(TileArea ta, SmallVector<T *, 4> &affected_stations, DoCommandFlag flags, Money removal_cost, bool keep_rail)
    01235 {
    01236   /* Count of the number of tiles removed */
    01237   int quantity = 0;
    01238   CommandCost total_cost(EXPENSES_CONSTRUCTION);
    01239
    01240   /* Do the action for every tile into the area */
    01241   TILE_AREA_LOOP(tile, ta) {
    01242     /* Make sure the specified tile is a rail station */
    01243     if (!HasStationTileRail(tile)) continue;
    01244
    01245     /* If there is a vehicle on ground, do not allow to remove (flood) the tile */
    01246     if (!EnsureNoVehicleOnGround(tile)) continue;
    01247
    01248     /* Check ownership of station */
    01249     T *st = T::GetByTile(tile);
    01250     if (st == NULL) continue;
    01251     if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) continue;
    01252
    01253     /* Do not allow removing from stations if non-uniform stations are not enabled
    01254      * The check must be here to give correct error message
    01255      */
    01256     if (!_settings_game.station.nonuniform_stations) return_cmd_error(STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED);
    01257
    01258     /* If we reached here, the tile is valid so increase the quantity of tiles we will remove */
    01259     quantity++;
    01260
    01261     if (flags & DC_EXEC) {
    01262       /* read variables before the station tile is removed */
    01263       uint specindex = GetCustomStationSpecIndex(tile);
    01264       Track track = GetRailStationTrack(tile);
    01265       Owner owner = GetTileOwner(tile);
    01266       RailType rt = GetRailType(tile);
    01267       Train *v = NULL;
    01268
    01269       if (HasStationReservation(tile)) {
    01270         v = GetTrainForReservation(tile, track);
    01271         if (v != NULL) {
    01272           /* Free train reservation. */
    01273           FreeTrainTrackReservation(v);
    01274           if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01275           Vehicle *temp = v;
    01276           for (; temp->Next() != NULL; temp = temp->Next()) { }
    01277           if (IsRailStationTile(temp->tile)) SetRailStationPlatformReservation(temp->tile, TrackdirToExitdir(ReverseTrackdir(temp->GetVehicleTrackdir())), false);
    01278         }
    01279       }
    01280
    01281       DoClearSquare(tile);
    01282       if (keep_rail) MakeRailNormal(tile, owner, TrackToTrackBits(track), rt);
    01283
    01284       st->rect.AfterRemoveTile(st, tile);
    01285       AddTrackToSignalBuffer(tile, track, owner);
    01286       YapfNotifyTrackLayoutChange(tile, track);
    01287
    01288       DeallocateSpecFromStation(st, specindex);
    01289
    01290       affected_stations.Include(st);
    01291
    01292       if (v != NULL) {
    01293         /* Restore station reservation. */
    01294         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01295         TryPathReserve(v, true, true);
    01296         for (; v->Next() != NULL; v = v->Next()) { }
    01297         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01298       }
    01299     }
    01300     if (keep_rail) {
    01301       /* Don't refund the 'steel' of the track! */
    01302       total_cost.AddCost(-_price[PR_CLEAR_RAIL]);
    01303     }
    01304   }
    01305
    01306   if (quantity == 0) return CMD_ERROR;
    01307
    01308   for (T **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01309     T *st = *stp;
    01310
    01311     /* now we need to make the "spanned" area of the railway station smaller
    01312      * if we deleted something at the edges.
    01313      * we also need to adjust train_tile. */
    01314     MakeRailStationAreaSmaller(st);
    01315     UpdateStationSignCoord(st);
    01316
    01317     /* if we deleted the whole station, delete the train facility. */
    01318     if (st->train_station.tile == INVALID_TILE) {
    01319       st->facilities &= ~FACIL_TRAIN;
    01320       SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01321       st->UpdateVirtCoord();
    01322       DeleteStationIfEmpty(st);
    01323     }
    01324   }
    01325
    01326   total_cost.AddCost(quantity * removal_cost);
    01327   return total_cost;
    01328 }
    01329
    01340 CommandCost CmdRemoveFromRailStation(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01341 {
    01342   TileIndex end = p1 == 0 ? start : p1;
    01343   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01344
    01345   TileArea ta(start, end);
    01346   SmallVector<Station *, 4> affected_stations;
    01347
    01348   CommandCost ret = RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_STATION_RAIL], HasBit(p2, 0));
    01349   if (ret.Failed()) return ret;
    01350
    01351   /* Do all station specific functions here. */
    01352   for (Station **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01353     Station *st = *stp;
    01354
    01355     if (st->train_station.tile == INVALID_TILE) SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01356     st->MarkTilesDirty(false);
    01357     st->RecomputeIndustriesNear();
    01358   }
    01359
    01360   /* Now apply the rail cost to the number that we deleted */
    01361   return ret;
    01362 }
    01363
    01374 CommandCost CmdRemoveFromRailWaypoint(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01375 {
    01376   TileIndex end = p1 == 0 ? start : p1;
    01377   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01378
    01379   TileArea ta(start, end);
    01380   SmallVector<Waypoint *, 4> affected_stations;
    01381
    01382   return RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_WAYPOINT_RAIL], HasBit(p2, 0));
    01383 }
    01384
    01385
    01393 template <class T>
    01394 CommandCost RemoveRailStation(T *st, DoCommandFlag flags)
    01395 {
    01396   /* Current company owns the station? */
    01397   if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) return CMD_ERROR;
    01398
    01399   /* determine width and height of platforms */
    01400   TileArea ta = st->train_station;
    01401
    01402   assert(ta.w != 0 && ta.h != 0);
    01403
    01404   CommandCost cost(EXPENSES_CONSTRUCTION);
    01405   /* clear all areas of the station */
    01406   TILE_AREA_LOOP(tile, ta) {
    01407     /* for nonuniform stations, only remove tiles that are actually train station tiles */
    01408     if (!st->TileBelongsToRailStation(tile)) continue;
    01409
    01410     if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
    01411
    01412     cost.AddCost(_price[PR_CLEAR_STATION_RAIL]);
    01413     if (flags & DC_EXEC) {
    01414       /* read variables before the station tile is removed */
    01415       Track track = GetRailStationTrack(tile);
    01416       Owner owner = GetTileOwner(tile); // _current_company can be OWNER_WATER
    01417       Train *v = NULL;
    01418       if (HasStationReservation(tile)) {
    01419         v = GetTrainForReservation(tile, track);
    01420         if (v != NULL) FreeTrainTrackReservation(v);
    01421       }
    01422       DoClearSquare(tile);
    01423       AddTrackToSignalBuffer(tile, track, owner);
    01424       YapfNotifyTrackLayoutChange(tile, track);
    01425       if (v != NULL) TryPathReserve(v, true);
    01426     }
    01427   }
    01428
    01429   if (flags & DC_EXEC) {
    01430     st->rect.AfterRemoveRect(st, st->train_station.tile, st->train_station.w, st->train_station.h);
    01431
    01432     st->train_station.Clear();
    01433
    01434     st->facilities &= ~FACIL_TRAIN;
    01435
    01436     free(st->speclist);
    01437     st->num_specs = 0;
    01438     st->speclist  = NULL;
    01439     st->cached_anim_triggers = 0;
    01440
    01441     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01442     st->UpdateVirtCoord();
    01443     DeleteStationIfEmpty(st);
    01444   }
    01445
    01446   return cost;
    01447 }
    01448
    01455 static CommandCost RemoveRailStation(TileIndex tile, DoCommandFlag flags)
    01456 {
    01457   /* if there is flooding and non-uniform stations are enabled, remove platforms tile by tile */
    01458   if (_current_company == OWNER_WATER && _settings_game.station.nonuniform_stations) {
    01459     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_STATION);
    01460   }
    01461
    01462   Station *st = Station::GetByTile(tile);
    01463   CommandCost cost = RemoveRailStation(st, flags);
    01464
    01465   if (flags & DC_EXEC) st->RecomputeIndustriesNear();
    01466
    01467   return cost;
    01468 }
    01469
    01476 static CommandCost RemoveRailWaypoint(TileIndex tile, DoCommandFlag flags)
    01477 {
    01478   /* if there is flooding and non-uniform stations are enabled, remove waypoints tile by tile */
    01479   if (_current_company == OWNER_WATER && _settings_game.station.nonuniform_stations) {
    01480     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_WAYPOINT);
    01481   }
    01482
    01483   return RemoveRailStation(Waypoint::GetByTile(tile), flags);
    01484 }
    01485
    01486
    01492 static RoadStop **FindRoadStopSpot(bool truck_station, Station *st)
    01493 {
    01494   RoadStop **primary_stop = (truck_station) ? &st->truck_stops : &st->bus_stops;
    01495
    01496   if (*primary_stop == NULL) {
    01497     /* we have no roadstop of the type yet, so write a "primary stop" */
    01498     return primary_stop;
    01499   } else {
    01500     /* there are stops already, so append to the end of the list */
    01501     RoadStop *stop = *primary_stop;
    01502     while (stop->next != NULL) stop = stop->next;
    01503     return &stop->next;
    01504   }
    01505 }
    01506
    01519 CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01520 {
    01521   bool type = HasBit(p2, 0);
    01522   bool is_drive_through = HasBit(p2, 1);
    01523   bool build_over_road  = is_drive_through && IsNormalRoadTile(tile);
    01524   RoadTypes rts = (RoadTypes)GB(p2, 2, 2);
    01525   StationID station_to_join = GB(p2, 16, 16);
    01526   bool reuse = (station_to_join != NEW_STATION);
    01527   if (!reuse) station_to_join = INVALID_STATION;
    01528   bool distant_join = (station_to_join != INVALID_STATION);
    01529   Owner tram_owner = _current_company;
    01530   Owner road_owner = _current_company;
    01531
    01532   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01533
    01534   if (!AreValidRoadTypes(rts) || !HasRoadTypesAvail(_current_company, rts)) return CMD_ERROR;
    01535
    01536   /* Trams only have drive through stops */
    01537   if (!is_drive_through && HasBit(rts, ROADTYPE_TRAM)) return CMD_ERROR;
    01538
    01539   /* Saveguard the parameters */
    01540   if (!IsValidDiagDirection((DiagDirection)p1)) return CMD_ERROR;
    01541   /* If it is a drive-through stop check for valid axis */
    01542   if (is_drive_through && !IsValidAxis((Axis)p1)) return CMD_ERROR;
    01543   /* Road bits in the wrong direction */
    01544   if (build_over_road && (GetAllRoadBits(tile) & ((Axis)p1 == AXIS_X ? ROAD_Y : ROAD_X)) != 0) return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    01545
    01546   if (!CheckIfAuthorityAllowsNewStation(tile, flags)) return CMD_ERROR;
    01547
    01548   RoadTypes cur_rts = IsNormalRoadTile(tile) ? GetRoadTypes(tile) : ROADTYPES_NONE;
    01549   uint num_roadbits = 0;
    01550   /* Not allowed to build over this road */
    01551   if (build_over_road) {
    01552     /* there is a road, check if we can build road+tram stop over it */
    01553     if (HasBit(cur_rts, ROADTYPE_ROAD)) {
    01554       road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    01555       if (road_owner == OWNER_TOWN) {
    01556         if (!_settings_game.construction.road_stop_on_town_road) return_cmd_error(STR_ERROR_DRIVE_THROUGH_ON_TOWN_ROAD);
    01557       } else if (!_settings_game.construction.road_stop_on_competitor_road && road_owner != OWNER_NONE && !CheckOwnership(road_owner)) {
    01558         return CMD_ERROR;
    01559       }
    01560       num_roadbits += CountBits(GetRoadBits(tile, ROADTYPE_ROAD));
    01561     }
    01562
    01563     /* there is a tram, check if we can build road+tram stop over it */
    01564     if (HasBit(cur_rts, ROADTYPE_TRAM)) {
    01565       tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    01566       if (!_settings_game.construction.road_stop_on_competitor_road && tram_owner != OWNER_NONE && !CheckOwnership(tram_owner)) {
    01567         return CMD_ERROR;
    01568       }
    01569       num_roadbits += CountBits(GetRoadBits(tile, ROADTYPE_TRAM));
    01570     }
    01571
    01572     /* Don't allow building the roadstop when vehicles are already driving on it */
    01573     if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
    01574
    01575     /* Do not remove roadtypes! */
    01576     rts |= cur_rts;
    01577   }
    01578
    01579   CommandCost cost = CheckFlatLandBelow(tile, 1, 1, flags, is_drive_through ? 5 << p1 : 1 << p1, NULL, !build_over_road);
    01580   if (CmdFailed(cost)) return cost;
    01581   uint roadbits_to_build = CountBits(rts) * 2 - num_roadbits;
    01582   cost.AddCost(_price[PR_BUILD_ROAD] * roadbits_to_build);
    01583
    01584   Station *st = NULL;
    01585   CommandCost ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 5), TileArea(tile, 1, 1), &st);
    01586   if (CmdFailed(ret)) return ret;
    01587
    01588   /* Find a deleted station close to us */
    01589   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    01590
    01591   /* give us a road stop in the list, and check if something went wrong */
    01592   if (!RoadStop::CanAllocateItem()) return_cmd_error(type ? STR_ERROR_TOO_MANY_TRUCK_STOPS : STR_ERROR_TOO_MANY_BUS_STOPS);
    01593
    01594   if (st != NULL) {
    01595     if (st->owner != _current_company) {
    01596       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01597     }
    01598
    01599     if (!st->rect.BeforeAddTile(tile, StationRect::ADD_TEST)) return CMD_ERROR;
    01600   } else {
    01601     /* allocate and initialize new station */
    01602     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01603
    01604     if (flags & DC_EXEC) {
    01605       st = new Station(tile);
    01606
    01607       st->town = ClosestTownFromTile(tile, UINT_MAX);
    01608       st->string_id = GenerateStationName(st, tile, STATIONNAMING_ROAD);
    01609
    01610       if (Company::IsValidID(_current_company)) {
    01611         SetBit(st->town->have_ratings, _current_company);
    01612       }
    01613     }
    01614   }
    01615
    01616   cost.AddCost(_price[type ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
    01617
    01618   if (flags & DC_EXEC) {
    01619     RoadStop *road_stop = new RoadStop(tile);
    01620     /* Insert into linked list of RoadStops */
    01621     RoadStop **currstop = FindRoadStopSpot(type, st);
    01622     *currstop = road_stop;
    01623
    01624     if (type) {
    01625       st->truck_station.Add(tile);
    01626     } else {
    01627       st->bus_station.Add(tile);
    01628     }
    01629
    01630     /* initialize an empty station */
    01631     st->AddFacility((type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, tile);
    01632
    01633     st->rect.BeforeAddTile(tile, StationRect::ADD_TRY);
    01634
    01635     RoadStopType rs_type = type ? ROADSTOP_TRUCK : ROADSTOP_BUS;
    01636     if (is_drive_through) {
    01637       MakeDriveThroughRoadStop(tile, st->owner, road_owner, tram_owner, st->index, rs_type, rts, (Axis)p1);
    01638       road_stop->MakeDriveThrough();
    01639     } else {
    01640       MakeRoadStop(tile, st->owner, st->index, rs_type, rts, (DiagDirection)p1);
    01641     }
    01642
    01643     st->UpdateVirtCoord();
    01644     UpdateStationAcceptance(st, false);
    01645     st->RecomputeIndustriesNear();
    01646     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01647     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01648     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_ROADVEHS);
    01649   }
    01650   return cost;
    01651 }
    01652
    01653
    01654 static Vehicle *ClearRoadStopStatusEnum(Vehicle *v, void *)
    01655 {
    01656   if (v->type == VEH_ROAD) {
    01657     /* Okay... we are a road vehicle on a drive through road stop.
    01658      * But that road stop has just been removed, so we need to make
    01659      * sure we are in a valid state... however, vehicles can also
    01660      * turn on road stop tiles, so only clear the 'road stop' state
    01661      * bits and only when the state was 'in road stop', otherwise
    01662      * we'll end up clearing the turn around bits. */
    01663     RoadVehicle *rv = RoadVehicle::From(v);
    01664     if (HasBit(rv->state, RVS_IN_DT_ROAD_STOP)) rv->state &= RVSB_ROAD_STOP_TRACKDIR_MASK;
    01665   }
    01666
    01667   return NULL;
    01668 }
    01669
    01670
    01677 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags)
    01678 {
    01679   Station *st = Station::GetByTile(tile);
    01680
    01681   if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) {
    01682     return CMD_ERROR;
    01683   }
    01684
    01685   bool is_truck = IsTruckStop(tile);
    01686
    01687   RoadStop **primary_stop;
    01688   RoadStop *cur_stop;
    01689   if (is_truck) { // truck stop
    01690     primary_stop = &st->truck_stops;
    01691     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_TRUCK);
    01692   } else {
    01693     primary_stop = &st->bus_stops;
    01694     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_BUS);
    01695   }
    01696
    01697   assert(cur_stop != NULL);
    01698
    01699   /* don't do the check for drive-through road stops when company bankrupts */
    01700   if (IsDriveThroughStopTile(tile) && (flags & DC_BANKRUPT)) {
    01701     /* remove the 'going through road stop' status from all vehicles on that tile */
    01702     if (flags & DC_EXEC) FindVehicleOnPos(tile, NULL, &ClearRoadStopStatusEnum);
    01703   } else {
    01704     if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
    01705   }
    01706
    01707   if (flags & DC_EXEC) {
    01708     if (*primary_stop == cur_stop) {
    01709       /* removed the first stop in the list */
    01710       *primary_stop = cur_stop->next;
    01711       /* removed the only stop? */
    01712       if (*primary_stop == NULL) {
    01713         st->facilities &= (is_truck ? ~FACIL_TRUCK_STOP : ~FACIL_BUS_STOP);
    01714       }
    01715     } else {
    01716       /* tell the predecessor in the list to skip this stop */
    01717       RoadStop *pred = *primary_stop;
    01718       while (pred->next != cur_stop) pred = pred->next;
    01719       pred->next = cur_stop->next;
    01720     }
    01721
    01722     if (IsDriveThroughStopTile(tile)) {
    01723       /* Clears the tile for us */
    01724       cur_stop->ClearDriveThrough();
    01725     } else {
    01726       DoClearSquare(tile);
    01727     }
    01728
    01729     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_ROADVEHS);
    01730     delete cur_stop;
    01731
    01732     /* Make sure no vehicle is going to the old roadstop */
    01733     RoadVehicle *v;
    01734     FOR_ALL_ROADVEHICLES(v) {
    01735       if (v->First() == v && v->current_order.IsType(OT_GOTO_STATION) &&
    01736           v->dest_tile == tile) {
    01737         v->dest_tile = v->GetOrderStationLocation(st->index);
    01738       }
    01739     }
    01740
    01741     st->rect.AfterRemoveTile(st, tile);
    01742
    01743     st->UpdateVirtCoord();
    01744     st->RecomputeIndustriesNear();
    01745     DeleteStationIfEmpty(st);
    01746
    01747     /* Update the tile area of the truck/bus stop */
    01748     if (is_truck) {
    01749       st->truck_station.Clear();
    01750       for (const RoadStop *rs = st->truck_stops; rs != NULL; rs = rs->next) st->truck_station.Add(rs->xy);
    01751     } else {
    01752       st->bus_station.Clear();
    01753       for (const RoadStop *rs = st->bus_stops; rs != NULL; rs = rs->next) st->bus_station.Add(rs->xy);
    01754     }
    01755   }
    01756
    01757   return CommandCost(EXPENSES_CONSTRUCTION, _price[is_truck ? PR_CLEAR_STATION_TRUCK : PR_CLEAR_STATION_BUS]);
    01758 }
    01759
    01768 CommandCost CmdRemoveRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01769 {
    01770   /* Make sure the specified tile is a road stop of the correct type */
    01771   if (!IsTileType(tile, MP_STATION) || !IsRoadStop(tile) || (uint32)GetRoadStopType(tile) != GB(p2, 0, 1)) return CMD_ERROR;
    01772
    01773   /* Save the stop info before it is removed */
    01774   bool is_drive_through = IsDriveThroughStopTile(tile);
    01775   RoadTypes rts = GetRoadTypes(tile);
    01776   RoadBits road_bits = IsDriveThroughStopTile(tile) ?
    01777       ((GetRoadStopDir(tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y) :
    01778       DiagDirToRoadBits(GetRoadStopDir(tile));
    01779
    01780   Owner road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    01781   Owner tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    01782   CommandCost ret = RemoveRoadStop(tile, flags);
    01783
    01784   /* If the stop was a drive-through stop replace the road */
    01785   if ((flags & DC_EXEC) && CmdSucceeded(ret) && is_drive_through) {
    01786     /* Rebuild the drive throuhg road stop. As a road stop can only be
    01787      * removed by the owner of the roadstop, _current_company is the
    01788      * owner of the road stop. */
    01789     MakeRoadNormal(tile, road_bits, rts, ClosestTownFromTile(tile, UINT_MAX)->index,
    01790         road_owner, tram_owner);
    01791   }
    01792
    01793   return ret;
    01794 }
    01795
    01803 static uint GetMinimalAirportDistanceToTile(const AirportFTAClass *afc, TileIndex town_tile, TileIndex airport_tile)
    01804 {
    01805   uint ttx = TileX(town_tile); // X, Y of town
    01806   uint tty = TileY(town_tile);
    01807
    01808   uint atx = TileX(airport_tile); // X, Y of northern airport corner
    01809   uint aty = TileY(airport_tile);
    01810
    01811   uint btx = TileX(airport_tile) + afc->size_x - 1; // X, Y of southern corner
    01812   uint bty = TileY(airport_tile) + afc->size_y - 1;
    01813
    01814   /* if ttx < atx, dx = atx - ttx
    01815    * if atx <= ttx <= btx, dx = 0
    01816    * else, dx = ttx - btx (similiar for dy) */
    01817   uint dx = ttx < atx ? atx - ttx : (ttx <= btx ? 0 : ttx - btx);
    01818   uint dy = tty < aty ? aty - tty : (tty <= bty ? 0 : tty - bty);
    01819
    01820   return dx + dy;
    01821 }
    01822
    01831 uint8 GetAirportNoiseLevelForTown(const AirportFTAClass *afc, TileIndex town_tile, TileIndex tile)
    01832 {
    01833   /* 0 cannot be accounted, and 1 is the lowest that can be reduced from town.
    01834    * So no need to go any further*/
    01835   if (afc->noise_level < 2) return afc->noise_level;
    01836
    01837   uint distance = GetMinimalAirportDistanceToTile(afc, town_tile, tile);
    01838
    01839   /* The steps for measuring noise reduction are based on the "magical" (and arbitrary) 8 base distance
    01840    * adding the town_council_tolerance 4 times, as a way to graduate, depending of the tolerance.
    01841    * Basically, it says that the less tolerant a town is, the bigger the distance before
    01842    * an actual decrease can be granted */
    01843   uint8 town_tolerance_distance = 8 + (_settings_game.difficulty.town_council_tolerance * 4);
    01844
    01845   /* now, we want to have the distance segmented using the distance judged bareable by town
    01846    * This will give us the coefficient of reduction the distance provides. */
    01847   uint noise_reduction = distance / town_tolerance_distance;
    01848
    01849   /* If the noise reduction equals the airport noise itself, don't give it for free.
    01850    * Otherwise, simply reduce the airport's level. */
    01851   return noise_reduction >= afc->noise_level ? 1 : afc->noise_level - noise_reduction;
    01852 }
    01853
    01861 Town *AirportGetNearestTown(const AirportFTAClass *afc, TileIndex airport_tile)
    01862 {
    01863   Town *t, *nearest = NULL;
    01864   uint add = afc->size_x + afc->size_y - 2; // GetMinimalAirportDistanceToTile can differ from DistanceManhattan by this much
    01865   uint mindist = UINT_MAX - add; // prevent overflow
    01866   FOR_ALL_TOWNS(t) {
    01867     if (DistanceManhattan(t->xy, airport_tile) < mindist + add) { // avoid calling GetMinimalAirportDistanceToTile too often
    01868       uint dist = GetMinimalAirportDistanceToTile(afc, t->xy, airport_tile);
    01869       if (dist < mindist) {
    01870         nearest = t;
    01871         mindist = dist;
    01872       }
    01873     }
    01874   }
    01875
    01876   return nearest;
    01877 }
    01878
    01879
    01881 void UpdateAirportsNoise()
    01882 {
    01883   Town *t;
    01884   const Station *st;
    01885
    01886   FOR_ALL_TOWNS(t) t->noise_reached = 0;
    01887
    01888   FOR_ALL_STATIONS(st) {
    01889     if (st->airport_tile != INVALID_TILE) {
    01890       const AirportFTAClass *afc = GetAirport(st->airport_type);
    01891       Town *nearest = AirportGetNearestTown(afc, st->airport_tile);
    01892       nearest->noise_reached += GetAirportNoiseLevelForTown(afc, nearest->xy, st->airport_tile);
    01893     }
    01894   }
    01895 }
    01896
    01907 CommandCost CmdBuildAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01908 {
    01909   bool airport_upgrade = true;
    01910   StationID station_to_join = GB(p2, 16, 16);
    01911   bool reuse = (station_to_join != NEW_STATION);
    01912   if (!reuse) station_to_join = INVALID_STATION;
    01913   bool distant_join = (station_to_join != INVALID_STATION);
    01914
    01915   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01916
    01917   if (p1 >= NUM_AIRPORTS) return CMD_ERROR;
    01918
    01919   if (!CheckIfAuthorityAllowsNewStation(tile, flags)) {
    01920     return CMD_ERROR;
    01921   }
    01922
    01923   /* Check if a valid, buildable airport was chosen for construction */
    01924   const AirportFTAClass *afc = GetAirport(p1);
    01925   if (!afc->IsAvailable()) return CMD_ERROR;
    01926
    01927   Town *t = ClosestTownFromTile(tile, UINT_MAX);
    01928   int w = afc->size_x;
    01929   int h = afc->size_y;
    01930
    01931   if (w > _settings_game.station.station_spread || h > _settings_game.station.station_spread) {
    01932     _error_message = STR_ERROR_STATION_TOO_SPREAD_OUT;
    01933     return CMD_ERROR;
    01934   }
    01935
    01936   CommandCost cost = CheckFlatLandBelow(tile, w, h, flags, 0, NULL);
    01937   if (CmdFailed(cost)) return cost;
    01938
    01939   /* Go get the final noise level, that is base noise minus factor from distance to town center */
    01940   Town *nearest = AirportGetNearestTown(afc, tile);
    01941   uint newnoise_level = GetAirportNoiseLevelForTown(afc, nearest->xy, tile);
    01942
    01943   /* Check if local auth would allow a new airport */
    01944   StringID authority_refuse_message = STR_NULL;
    01945
    01946   if (_settings_game.economy.station_noise_level) {
    01947     /* do not allow to build a new airport if this raise the town noise over the maximum allowed by town */
    01948     if ((nearest->noise_reached + newnoise_level) > nearest->MaxTownNoise()) {
    01949       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_NOISE;
    01950     }
    01951   } else {
    01952     uint num = 0;
    01953     const Station *st;
    01954     FOR_ALL_STATIONS(st) {
    01955       if (st->town == t && (st->facilities & FACIL_AIRPORT) && st->airport_type != AT_OILRIG) num++;
    01956     }
    01957     if (num >= 2) {
    01958       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_AIRPORT;
    01959     }
    01960   }
    01961
    01962   if (authority_refuse_message != STR_NULL) {
    01963     SetDParam(0, t->index);
    01964     return_cmd_error(authority_refuse_message);
    01965   }
    01966
    01967   Station *st = NULL;
    01968   CommandCost ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 0), TileArea(tile, w, h), &st);
    01969   if (CmdFailed(ret)) return ret;
    01970
    01971   /* Distant join */
    01972   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    01973
    01974   /* Find a deleted station close to us */
    01975   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    01976
    01977   if (st != NULL) {
    01978     if (st->owner != _current_company) {
    01979       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01980     }
    01981
    01982     if (!st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TEST)) return CMD_ERROR;
    01983
    01984     if (st->airport_tile != INVALID_TILE) {
    01985       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_AIRPORT);
    01986     }
    01987   } else {
    01988     airport_upgrade = false;
    01989
    01990     /* allocate and initialize new station */
    01991     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01992
    01993     if (flags & DC_EXEC) {
    01994       st = new Station(tile);
    01995
    01996       st->town = t;
    01997       st->string_id = GenerateStationName(st, tile, !(afc->flags & AirportFTAClass::AIRPLANES) ? STATIONNAMING_HELIPORT : STATIONNAMING_AIRPORT);
    01998
    01999       if (Company::IsValidID(_current_company)) {
    02000         SetBit(st->town->have_ratings, _current_company);
    02001       }
    02002     }
    02003   }
    02004
    02005   cost.AddCost(_price[PR_BUILD_STATION_AIRPORT] * w * h);
    02006
    02007   if (flags & DC_EXEC) {
    02008     /* Always add the noise, so there will be no need to recalculate when option toggles */
    02009     nearest->noise_reached += newnoise_level;
    02010
    02011     st->airport_tile = tile;
    02012     st->AddFacility(FACIL_AIRPORT, tile);
    02013     st->airport_type = (byte)p1;
    02014     st->airport_flags = 0;
    02015
    02016     st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TRY);
    02017
    02018     /* if airport was demolished while planes were en-route to it, the
    02019      * positions can no longer be the same (v->u.air.pos), since different
    02020      * airports have different indexes. So update all planes en-route to this
    02021      * airport. Only update if
    02022      * 1. airport is upgraded
    02023      * 2. airport is added to existing station (unfortunately unavoideable)
    02024      */
    02025     if (airport_upgrade) UpdateAirplanesOnNewStation(st);
    02026
    02027     {
    02028       const byte *b = _airport_sections[p1];
    02029
    02030       TILE_LOOP(tile_cur, w, h, tile) {
    02031         MakeAirport(tile_cur, st->owner, st->index, *b);
    02032         b++;
    02033       }
    02034     }
    02035
    02036     st->UpdateVirtCoord();
    02037     UpdateStationAcceptance(st, false);
    02038     st->RecomputeIndustriesNear();
    02039     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02040     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02041     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_PLANES);
    02042
    02043     if (_settings_game.economy.station_noise_level) {
    02044       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02045     }
    02046   }
    02047
    02048   return cost;
    02049 }
    02050
    02057 static CommandCost RemoveAirport(TileIndex tile, DoCommandFlag flags)
    02058 {
    02059   Station *st = Station::GetByTile(tile);
    02060
    02061   if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) {
    02062     return CMD_ERROR;
    02063   }
    02064
    02065   tile = st->airport_tile;
    02066
    02067   const AirportFTAClass *afc = st->Airport();
    02068   int w = afc->size_x;
    02069   int h = afc->size_y;
    02070
    02071   CommandCost cost(EXPENSES_CONSTRUCTION, w * h * _price[PR_CLEAR_STATION_AIRPORT]);
    02072
    02073   const Aircraft *a;
    02074   FOR_ALL_AIRCRAFT(a) {
    02075     if (!a->IsNormalAircraft()) continue;
    02076     if (a->targetairport == st->index && a->state != FLYING) return CMD_ERROR;
    02077   }
    02078
    02079   TILE_LOOP(tile_cur, w, h, tile) {
    02080     if (!EnsureNoVehicleOnGround(tile_cur)) return CMD_ERROR;
    02081
    02082     if (flags & DC_EXEC) {
    02083       DeleteAnimatedTile(tile_cur);
    02084       DoClearSquare(tile_cur);
    02085     }
    02086   }
    02087
    02088   if (flags & DC_EXEC) {
    02089     for (uint i = 0; i < afc->nof_depots; ++i) {
    02090       DeleteWindowById(
    02091         WC_VEHICLE_DEPOT, tile + ToTileIndexDiff(afc->airport_depots[i])
    02092       );
    02093     }
    02094
    02095     /* Go get the final noise level, that is base noise minus factor from distance to town center.
    02096      * And as for construction, always remove it, even if the setting is not set, in order to avoid the
    02097      * need of recalculation */
    02098     Town *nearest = AirportGetNearestTown(afc, tile);
    02099     nearest->noise_reached -= GetAirportNoiseLevelForTown(afc, nearest->xy, tile);
    02100
    02101     st->rect.AfterRemoveRect(st, tile, w, h);
    02102
    02103     st->airport_tile = INVALID_TILE;
    02104     st->facilities &= ~FACIL_AIRPORT;
    02105
    02106     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_PLANES);
    02107
    02108     if (_settings_game.economy.station_noise_level) {
    02109       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02110     }
    02111
    02112     st->UpdateVirtCoord();
    02113     st->RecomputeIndustriesNear();
    02114     DeleteStationIfEmpty(st);
    02115   }
    02116
    02117   return cost;
    02118 }
    02119
    02126 bool HasStationInUse(StationID station, CompanyID company)
    02127 {
    02128   const Vehicle *v;
    02129   FOR_ALL_VEHICLES(v) {
    02130     if (company == INVALID_COMPANY || v->owner == company) {
    02131       const Order *order;
    02132       FOR_VEHICLE_ORDERS(v, order) {
    02133         if ((order->IsType(OT_GOTO_STATION) || order->IsType(OT_GOTO_WAYPOINT)) && order->GetDestination() == station) {
    02134           return true;
    02135         }
    02136       }
    02137     }
    02138   }
    02139   return false;
    02140 }
    02141
    02142 static const TileIndexDiffC _dock_tileoffs_chkaround[] = {
    02143   {-1,  0},
    02144   { 0,  0},
    02145   { 0,  0},
    02146   { 0, -1}
    02147 };
    02148 static const byte _dock_w_chk[4] = { 2, 1, 2, 1 };
    02149 static const byte _dock_h_chk[4] = { 1, 2, 1, 2 };
    02150
    02159 CommandCost CmdBuildDock(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02160 {
    02161   StationID station_to_join = GB(p2, 16, 16);
    02162   bool reuse = (station_to_join != NEW_STATION);
    02163   if (!reuse) station_to_join = INVALID_STATION;
    02164   bool distant_join = (station_to_join != INVALID_STATION);
    02165
    02166   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    02167
    02168   DiagDirection direction = GetInclinedSlopeDirection(GetTileSlope(tile, NULL));
    02169   if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02170   direction = ReverseDiagDir(direction);
    02171
    02172   /* Docks cannot be placed on rapids */
    02173   if (IsWaterTile(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02174
    02175   if (!CheckIfAuthorityAllowsNewStation(tile, flags)) return CMD_ERROR;
    02176
    02177   if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02178
    02179   if (CmdFailed(DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR))) return CMD_ERROR;
    02180
    02181   TileIndex tile_cur = tile + TileOffsByDiagDir(direction);
    02182
    02183   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur, NULL) != SLOPE_FLAT) {
    02184     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02185   }
    02186
    02187   if (MayHaveBridgeAbove(tile_cur) && IsBridgeAbove(tile_cur)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02188
    02189   /* Get the water class of the water tile before it is cleared.*/
    02190   WaterClass wc = GetWaterClass(tile_cur);
    02191
    02192   if (CmdFailed(DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR))) return CMD_ERROR;
    02193
    02194   tile_cur += TileOffsByDiagDir(direction);
    02195   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur, NULL) != SLOPE_FLAT) {
    02196     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02197   }
    02198
    02199   /* middle */
    02200   Station *st = NULL;
    02201   CommandCost ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p1, 0),
    02202       TileArea(tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02203           _dock_w_chk[direction], _dock_h_chk[direction]), &st);
    02204   if (CmdFailed(ret)) return ret;
    02205
    02206   /* Distant join */
    02207   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    02208
    02209   /* Find a deleted station close to us */
    02210   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    02211
    02212   if (st != NULL) {
    02213     if (st->owner != _current_company) {
    02214       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    02215     }
    02216
    02217     if (!st->rect.BeforeAddRect(
    02218         tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02219         _dock_w_chk[direction], _dock_h_chk[direction], StationRect::ADD_TEST)) return CMD_ERROR;
    02220
    02221     if (st->dock_tile != INVALID_TILE) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_DOCK);
    02222   } else {
    02223     /* allocate and initialize new station */
    02224     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    02225
    02226     if (flags & DC_EXEC) {
    02227       st = new Station(tile);
    02228
    02229       st->town = ClosestTownFromTile(tile, UINT_MAX);
    02230       st->string_id = GenerateStationName(st, tile, STATIONNAMING_DOCK);
    02231
    02232       if (Company::IsValidID(_current_company)) {
    02233         SetBit(st->town->have_ratings, _current_company);
    02234       }
    02235     }
    02236   }
    02237
    02238   if (flags & DC_EXEC) {
    02239     st->dock_tile = tile;
    02240     st->AddFacility(FACIL_DOCK, tile);
    02241
    02242     st->rect.BeforeAddRect(
    02243         tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02244         _dock_w_chk[direction], _dock_h_chk[direction], StationRect::ADD_TRY);
    02245
    02246     MakeDock(tile, st->owner, st->index, direction, wc);
    02247
    02248     st->UpdateVirtCoord();
    02249     UpdateStationAcceptance(st, false);
    02250     st->RecomputeIndustriesNear();
    02251     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02252     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02253     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_SHIPS);
    02254   }
    02255
    02256   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_STATION_DOCK]);
    02257 }
    02258
    02265 static CommandCost RemoveDock(TileIndex tile, DoCommandFlag flags)
    02266 {
    02267   Station *st = Station::GetByTile(tile);
    02268   if (!CheckOwnership(st->owner)) return CMD_ERROR;
    02269
    02270   TileIndex tile1 = st->dock_tile;
    02271   TileIndex tile2 = tile1 + TileOffsByDiagDir(GetDockDirection(tile1));
    02272
    02273   if (!EnsureNoVehicleOnGround(tile1)) return CMD_ERROR;
    02274   if (!EnsureNoVehicleOnGround(tile2)) return CMD_ERROR;
    02275
    02276   if (flags & DC_EXEC) {
    02277     DoClearSquare(tile1);
    02278     MakeWaterKeepingClass(tile2, st->owner);
    02279
    02280     st->rect.AfterRemoveTile(st, tile1);
    02281     st->rect.AfterRemoveTile(st, tile2);
    02282
    02283     MarkTileDirtyByTile(tile2);
    02284
    02285     st->dock_tile = INVALID_TILE;
    02286     st->facilities &= ~FACIL_DOCK;
    02287
    02288     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_SHIPS);
    02289     st->UpdateVirtCoord();
    02290     st->RecomputeIndustriesNear();
    02291     DeleteStationIfEmpty(st);
    02292   }
    02293
    02294   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_STATION_DOCK]);
    02295 }
    02296
    02297 #include "table/station_land.h"
    02298
    02299 const DrawTileSprites *GetStationTileLayout(StationType st, byte gfx)
    02300 {
    02301   return &_station_display_datas[st][gfx];
    02302 }
    02303
    02304 static void DrawTile_Station(TileInfo *ti)
    02305 {
    02306   const DrawTileSprites *t = NULL;
    02307   RoadTypes roadtypes;
    02308   int32 total_offset;
    02309   int32 custom_ground_offset;
    02310
    02311   if (HasStationRail(ti->tile)) {
    02312     const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
    02313     roadtypes = ROADTYPES_NONE;
    02314     total_offset = rti->total_offset;
    02315     custom_ground_offset = rti->custom_ground_offset;
    02316   } else {
    02317     roadtypes = IsRoadStop(ti->tile) ? GetRoadTypes(ti->tile) : ROADTYPES_NONE;
    02318     total_offset = 0;
    02319     custom_ground_offset = 0;
    02320   }
    02321   uint32 relocation = 0;
    02322   const BaseStation *st = NULL;
    02323   const StationSpec *statspec = NULL;
    02324   Owner owner = GetTileOwner(ti->tile);
    02325
    02326   SpriteID palette;
    02327   if (Company::IsValidID(owner)) {
    02328     palette = COMPANY_SPRITE_COLOUR(owner);
    02329   } else {
    02330     /* Some stations are not owner by a company, namely oil rigs */
    02331     palette = PALETTE_TO_GREY;
    02332   }
    02333
    02334   if (IsCustomStationSpecIndex(ti->tile)) {
    02335     /* look for customization */
    02336     st = BaseStation::GetByTile(ti->tile);
    02337     statspec = st->speclist[GetCustomStationSpecIndex(ti->tile)].spec;
    02338
    02339     if (statspec != NULL) {
    02340       uint tile = GetStationGfx(ti->tile);
    02341
    02342       relocation = GetCustomStationRelocation(statspec, st, ti->tile);
    02343
    02344       if (HasBit(statspec->callback_mask, CBM_STATION_SPRITE_LAYOUT)) {
    02345         uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0, 0, statspec, st, ti->tile);
    02346         if (callback != CALLBACK_FAILED) tile = (callback & ~1) + GetRailStationAxis(ti->tile);
    02347       }
    02348
    02349       /* Ensure the chosen tile layout is valid for this custom station */
    02350       if (statspec->renderdata != NULL) {
    02351         t = &statspec->renderdata[tile < statspec->tiles ? tile : (uint)GetRailStationAxis(ti->tile)];
    02352       }
    02353     }
    02354   }
    02355
    02356   if (t == NULL || t->seq == NULL) t = &_station_display_datas[GetStationType(ti->tile)][GetStationGfx(ti->tile)];
    02357
    02358   /* don't show foundation for docks */
    02359   if (ti->tileh != SLOPE_FLAT && !IsDock(ti->tile)) {
    02360     if (statspec != NULL && HasBit(statspec->flags, SSF_CUSTOM_FOUNDATIONS)) {
    02361       /* Station has custom foundations. */
    02362       SpriteID image = GetCustomStationFoundationRelocation(statspec, st, ti->tile);
    02363
    02364       if (HasBit(statspec->flags, SSF_EXTENDED_FOUNDATIONS)) {
    02365         /* Station provides extended foundations. */
    02366
    02367         static const uint8 foundation_parts[] = {
    02368           0, 0, 0, 0, // Invalid,  Invalid,   Invalid,   SLOPE_SW
    02369           0, 1, 2, 3, // Invalid,  SLOPE_EW,  SLOPE_SE,  SLOPE_WSE
    02370           0, 4, 5, 6, // Invalid,  SLOPE_NW,  SLOPE_NS,  SLOPE_NWS
    02371           7, 8, 9     // SLOPE_NE, SLOPE_ENW, SLOPE_SEN
    02372         };
    02373
    02374         AddSortableSpriteToDraw(image + foundation_parts[ti->tileh], PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02375       } else {
    02376         /* Draw simple foundations, built up from 8 possible foundation sprites. */
    02377
    02378         /* Each set bit represents one of the eight composite sprites to be drawn.
    02379          * 'Invalid' entries will not drawn but are included for completeness. */
    02380         static const uint8 composite_foundation_parts[] = {
    02381           /* Invalid  (00000000), Invalid   (11010001), Invalid   (11100100), SLOPE_SW  (11100000) */
    02382              0x00,                0xD1,                 0xE4,                 0xE0,
    02383           /* Invalid  (11001010), SLOPE_EW  (11001001), SLOPE_SE  (11000100), SLOPE_WSE (11000000) */
    02384              0xCA,                0xC9,                 0xC4,                 0xC0,
    02385           /* Invalid  (11010010), SLOPE_NW  (10010001), SLOPE_NS  (11100100), SLOPE_NWS (10100000) */
    02386              0xD2,                0x91,                 0xE4,                 0xA0,
    02387           /* SLOPE_NE (01001010), SLOPE_ENW (00001001), SLOPE_SEN (01000100) */
    02388              0x4A,                0x09,                 0x44
    02389         };
    02390
    02391         uint8 parts = composite_foundation_parts[ti->tileh];
    02392
    02393         /* If foundations continue beyond the tile's upper sides then
    02394          * mask out the last two pieces. */
    02395         uint z;
    02396         Slope slope = GetFoundationSlope(ti->tile, &z);
    02397         if (!HasFoundationNW(ti->tile, slope, z)) ClrBit(parts, 6);
    02398         if (!HasFoundationNE(ti->tile, slope, z)) ClrBit(parts, 7);
    02399
    02400         for (int i = 0; i < 8; i++) {
    02401           if (HasBit(parts, i)) {
    02402             AddSortableSpriteToDraw(image + i, PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02403           }
    02404         }
    02405       }
    02406
    02407       OffsetGroundSprite(31, 1);
    02408       ti->z += ApplyFoundationToSlope(FOUNDATION_LEVELED, &ti->tileh);
    02409     } else {
    02410       DrawFoundation(ti, FOUNDATION_LEVELED);
    02411     }
    02412   }
    02413
    02414   if (IsBuoy(ti->tile) || IsDock(ti->tile) || (IsOilRig(ti->tile) && GetWaterClass(ti->tile) != WATER_CLASS_INVALID)) {
    02415     if (ti->tileh == SLOPE_FLAT) {
    02416       DrawWaterClassGround(ti);
    02417     } else {
    02418       assert(IsDock(ti->tile));
    02419       TileIndex water_tile = ti->tile + TileOffsByDiagDir(GetDockDirection(ti->tile));
    02420       WaterClass wc = GetWaterClass(water_tile);
    02421       if (wc == WATER_CLASS_SEA) {
    02422         DrawShoreTile(ti->tileh);
    02423       } else {
    02424         DrawClearLandTile(ti, 3);
    02425       }
    02426     }
    02427   } else {
    02428     SpriteID image = t->ground.sprite;
    02429     SpriteID pal   = t->ground.pal;
    02430     if (HasBit(image, SPRITE_MODIFIER_USE_OFFSET)) {
    02431       image += GetCustomStationGroundRelocation(statspec, st, ti->tile);
    02432       image += custom_ground_offset;
    02433     } else {
    02434       image += total_offset;
    02435     }
    02436     DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, palette));
    02437
    02438     /* PBS debugging, draw reserved tracks darker */
    02439     if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationRail(ti->tile) && HasStationReservation(ti->tile)) {
    02440       const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
    02441       DrawGroundSprite(GetRailStationAxis(ti->tile) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
    02442     }
    02443   }
    02444
    02445   if (HasStationRail(ti->tile) && HasCatenaryDrawn(GetRailType(ti->tile)) && IsStationTileElectrifiable(ti->tile)) DrawCatenary(ti);
    02446
    02447   if (HasBit(roadtypes, ROADTYPE_TRAM)) {
    02448     Axis axis = GetRoadStopDir(ti->tile) == DIAGDIR_NE ? AXIS_X : AXIS_Y;
    02449     DrawGroundSprite((HasBit(roadtypes, ROADTYPE_ROAD) ? SPR_TRAMWAY_OVERLAY : SPR_TRAMWAY_TRAM) + (axis ^ 1), PAL_NONE);
    02450     DrawTramCatenary(ti, axis == AXIS_X ? ROAD_X : ROAD_Y);
    02451   }
    02452
    02453   if (IsRailWaypoint(ti->tile)) {
    02454     /* Don't offset the waypoint graphics; they're always the same. */
    02455     total_offset = 0;
    02456   }
    02457
    02458   const DrawTileSeqStruct *dtss;
    02459   foreach_draw_tile_seq(dtss, t->seq) {
    02460     SpriteID image = dtss->image.sprite;
    02461
    02462     /* Stop drawing sprite sequence once we meet a sprite that doesn't have to be opaque */
    02463     if (IsInvisibilitySet(TO_BUILDINGS) && !HasBit(image, SPRITE_MODIFIER_OPAQUE)) return;
    02464
    02465     if (relocation == 0 || HasBit(image, SPRITE_MODIFIER_USE_OFFSET)) {
    02466       image += total_offset;
    02467     } else {
    02468       image += relocation;
    02469     }
    02470
    02471     SpriteID pal = SpriteLayoutPaletteTransform(image, dtss->image.pal, palette);
    02472
    02473     if ((byte)dtss->delta_z != 0x80) {
    02474       AddSortableSpriteToDraw(
    02475         image, pal,
    02476         ti->x + dtss->delta_x, ti->y + dtss->delta_y,
    02477         dtss->size_x, dtss->size_y,
    02478         dtss->size_z, ti->z + dtss->delta_z,
    02479         !HasBit(image, SPRITE_MODIFIER_OPAQUE) && IsTransparencySet(TO_BUILDINGS)
    02480       );
    02481     } else {
    02482       /* For stations and original spritelayouts delta_x and delta_y are signed */
    02483       AddChildSpriteScreen(image, pal, dtss->delta_x, dtss->delta_y, !HasBit(image, SPRITE_MODIFIER_OPAQUE) && IsTransparencySet(TO_BUILDINGS));
    02484     }
    02485   }
    02486 }
    02487
    02488 void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, RoadType roadtype, int image)
    02489 {
    02490   int32 total_offset = 0;
    02491   SpriteID pal = COMPANY_SPRITE_COLOUR(_local_company);
    02492   const DrawTileSprites *t = &_station_display_datas[st][image];
    02493
    02494   if (railtype != INVALID_RAILTYPE) {
    02495     const RailtypeInfo *rti = GetRailTypeInfo(railtype);
    02496     total_offset = rti->total_offset;
    02497   }
    02498
    02499   SpriteID img = t->ground.sprite;
    02500   DrawSprite(img + total_offset, HasBit(img, PALETTE_MODIFIER_COLOUR) ? pal : PAL_NONE, x, y);
    02501
    02502   if (roadtype == ROADTYPE_TRAM) {
    02503     DrawSprite(SPR_TRAMWAY_TRAM + (t->ground.sprite == SPR_ROAD_PAVED_STRAIGHT_X ? 1 : 0), PAL_NONE, x, y);
    02504   }
    02505
    02506   const DrawTileSeqStruct *dtss;
    02507   foreach_draw_tile_seq(dtss, t->seq) {
    02508     Point pt = RemapCoords(dtss->delta_x, dtss->delta_y, dtss->delta_z);
    02509     DrawSprite(dtss->image.sprite + total_offset, pal, x + pt.x, y + pt.y);
    02510   }
    02511 }
    02512
    02513 static uint GetSlopeZ_Station(TileIndex tile, uint x, uint y)
    02514 {
    02515   return GetTileMaxZ(tile);
    02516 }
    02517
    02518 static Foundation GetFoundation_Station(TileIndex tile, Slope tileh)
    02519 {
    02520   return FlatteningFoundation(tileh);
    02521 }
    02522
    02523 static void GetTileDesc_Station(TileIndex tile, TileDesc *td)
    02524 {
    02525   td->owner[0] = GetTileOwner(tile);
    02526   if (IsDriveThroughStopTile(tile)) {
    02527     Owner road_owner = INVALID_OWNER;
    02528     Owner tram_owner = INVALID_OWNER;
    02529     RoadTypes rts = GetRoadTypes(tile);
    02530     if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    02531     if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    02532
    02533     /* Is there a mix of owners? */
    02534     if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
    02535         (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
    02536       uint i = 1;
    02537       if (road_owner != INVALID_OWNER) {
    02538         td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
    02539         td->owner[i] = road_owner;
    02540         i++;
    02541       }
    02542       if (tram_owner != INVALID_OWNER) {
    02543         td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
    02544         td->owner[i] = tram_owner;
    02545       }
    02546     }
    02547   }
    02548   td->build_date = BaseStation::GetByTile(tile)->build_date;
    02549
    02550   const StationSpec *spec = GetStationSpec(tile);
    02551
    02552   if (spec != NULL) {
    02553     td->station_class = GetStationClassName(spec->sclass);
    02554     td->station_name = spec->name;
    02555
    02556     if (spec->grffile != NULL) {
    02557       const GRFConfig *gc = GetGRFConfig(spec->grffile->grfid);
    02558       td->grf = gc->name;
    02559     }
    02560   }
    02561
    02562   StringID str;
    02563   switch (GetStationType(tile)) {
    02564     default: NOT_REACHED();
    02565     case STATION_RAIL:     str = STR_LAI_STATION_DESCRIPTION_RAILROAD_STATION; break;
    02566     case STATION_AIRPORT:
    02567       str = (IsHangar(tile) ? STR_LAI_STATION_DESCRIPTION_AIRCRAFT_HANGAR : STR_LAI_STATION_DESCRIPTION_AIRPORT);
    02568       break;
    02569     case STATION_TRUCK:    str = STR_LAI_STATION_DESCRIPTION_TRUCK_LOADING_AREA; break;
    02570     case STATION_BUS:      str = STR_LAI_STATION_DESCRIPTION_BUS_STATION; break;
    02571     case STATION_OILRIG:   str = STR_INDUSTRY_NAME_OIL_RIG; break;
    02572     case STATION_DOCK:     str = STR_LAI_STATION_DESCRIPTION_SHIP_DOCK; break;
    02573     case STATION_BUOY:     str = STR_LAI_STATION_DESCRIPTION_BUOY; break;
    02574     case STATION_WAYPOINT: str = STR_LAI_STATION_DESCRIPTION_WAYPOINT; break;
    02575   }
    02576   td->str = str;
    02577 }
    02578
    02579
    02580 static TrackStatus GetTileTrackStatus_Station(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
    02581 {
    02582   TrackBits trackbits = TRACK_BIT_NONE;
    02583
    02584   switch (mode) {
    02585     case TRANSPORT_RAIL:
    02586       if (HasStationRail(tile) && !IsStationTileBlocked(tile)) {
    02587         trackbits = TrackToTrackBits(GetRailStationTrack(tile));
    02588       }
    02589       break;
    02590
    02591     case TRANSPORT_WATER:
    02592       /* buoy is coded as a station, it is always on open water */
    02593       if (IsBuoy(tile)) {
    02594         trackbits = TRACK_BIT_ALL;
    02595         /* remove tracks that connect NE map edge */
    02596         if (TileX(tile) == 0) trackbits &= ~(TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_RIGHT);
    02597         /* remove tracks that connect NW map edge */
    02598         if (TileY(tile) == 0) trackbits &= ~(TRACK_BIT_Y | TRACK_BIT_LEFT | TRACK_BIT_UPPER);
    02599       }
    02600       break;
    02601
    02602     case TRANSPORT_ROAD:
    02603       if ((GetRoadTypes(tile) & sub_mode) != 0 && IsRoadStop(tile)) {
    02604         DiagDirection dir = GetRoadStopDir(tile);
    02605         Axis axis = DiagDirToAxis(dir);
    02606
    02607         if (side != INVALID_DIAGDIR) {
    02608           if (axis != DiagDirToAxis(side) || (IsStandardRoadStopTile(tile) && dir != side)) break;
    02609         }
    02610
    02611         trackbits = AxisToTrackBits(axis);
    02612       }
    02613       break;
    02614
    02615     default:
    02616       break;
    02617   }
    02618
    02619   return CombineTrackStatus(TrackBitsToTrackdirBits(trackbits), TRACKDIR_BIT_NONE);
    02620 }
    02621
    02622
    02623 static void TileLoop_Station(TileIndex tile)
    02624 {
    02625   /* FIXME -- GetTileTrackStatus_Station -> animated stationtiles
    02626    * hardcoded.....not good */
    02627   switch (GetStationType(tile)) {
    02628     case STATION_AIRPORT:
    02629       switch (GetStationGfx(tile)) {
    02630         case GFX_RADAR_LARGE_FIRST:
    02631         case GFX_WINDSACK_FIRST : // for small airport
    02632         case GFX_RADAR_INTERNATIONAL_FIRST:
    02633         case GFX_RADAR_METROPOLITAN_FIRST:
    02634         case GFX_RADAR_DISTRICTWE_FIRST: // radar district W-E airport
    02635         case GFX_WINDSACK_INTERCON_FIRST : // for intercontinental airport
    02636           AddAnimatedTile(tile);
    02637           break;
    02638       }
    02639       break;
    02640
    02641     case STATION_DOCK:
    02642       if (GetTileSlope(tile, NULL) != SLOPE_FLAT) break; // only handle water part
    02643     /* FALL THROUGH */
    02644     case STATION_OILRIG: //(station part)
    02645     case STATION_BUOY:
    02646       TileLoop_Water(tile);
    02647       break;
    02648
    02649     default: break;
    02650   }
    02651 }
    02652
    02653
    02654 static void AnimateTile_Station(TileIndex tile)
    02655 {
    02656   struct AnimData {
    02657     StationGfx from; // first sprite
    02658     StationGfx to;   // last sprite
    02659     byte delay;
    02660   };
    02661
    02662   static const AnimData data[] = {
    02663     { GFX_RADAR_LARGE_FIRST,         GFX_RADAR_LARGE_LAST,         3 },
    02664     { GFX_WINDSACK_FIRST,            GFX_WINDSACK_LAST,            1 },
    02665     { GFX_RADAR_INTERNATIONAL_FIRST, GFX_RADAR_INTERNATIONAL_LAST, 3 },
    02666     { GFX_RADAR_METROPOLITAN_FIRST,  GFX_RADAR_METROPOLITAN_LAST,  3 },
    02667     { GFX_RADAR_DISTRICTWE_FIRST,    GFX_RADAR_DISTRICTWE_LAST,    3 },
    02668     { GFX_WINDSACK_INTERCON_FIRST,   GFX_WINDSACK_INTERCON_LAST,   1 }
    02669   };
    02670
    02671   if (HasStationRail(tile)) {
    02672     AnimateStationTile(tile);
    02673     return;
    02674   }
    02675
    02676   StationGfx gfx = GetStationGfx(tile);
    02677
    02678   for (const AnimData *i = data; i != endof(data); i++) {
    02679     if (i->from <= gfx && gfx <= i->to) {
    02680       if ((_tick_counter & i->delay) == 0) {
    02681         SetStationGfx(tile, gfx < i->to ? gfx + 1 : i->from);
    02682         MarkTileDirtyByTile(tile);
    02683       }
    02684       break;
    02685     }
    02686   }
    02687 }
    02688
    02689
    02690 static bool ClickTile_Station(TileIndex tile)
    02691 {
    02692   const BaseStation *st = BaseStation::GetByTile(tile);
    02693
    02694   if (st->facilities & FACIL_WAYPOINT) {
    02695     ShowWaypointWindow(Waypoint::From(st));
    02696   } else if (IsHangar(tile)) {
    02697     ShowDepotWindow(tile, VEH_AIRCRAFT);
    02698   } else {
    02699     ShowStationViewWindow(st->index);
    02700   }
    02701   return true;
    02702 }
    02703
    02704 static VehicleEnterTileStatus VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
    02705 {
    02706   if (v->type == VEH_TRAIN) {
    02707     StationID station_id = GetStationIndex(tile);
    02708     if (!v->current_order.ShouldStopAtStation(v, station_id)) return VETSB_CONTINUE;
    02709     if (!IsRailStation(tile) || !Train::From(v)->IsFrontEngine()) return VETSB_CONTINUE;
    02710
    02711     int station_ahead;
    02712     int station_length;
    02713     int stop = GetTrainStopLocation(station_id, tile, Train::From(v), &station_ahead, &station_length);
    02714
    02715     /* Stop whenever that amount of station ahead + the distance from the
    02716      * begin of the platform to the stop location is longer than the length
    02717      * of the platform. Station ahead 'includes' the current tile where the
    02718      * vehicle is on, so we need to substract that. */
    02719     if (!IsInsideBS(stop + station_ahead, station_length, TILE_SIZE)) return VETSB_CONTINUE;
    02720
    02721     DiagDirection dir = DirToDiagDir(v->direction);
    02722
    02723     x &= 0xF;
    02724     y &= 0xF;
    02725
    02726     if (DiagDirToAxis(dir) != AXIS_X) Swap(x, y);
    02727     if (y == TILE_SIZE / 2) {
    02728       if (dir != DIAGDIR_SE && dir != DIAGDIR_SW) x = TILE_SIZE - 1 - x;
    02729       stop &= TILE_SIZE - 1;
    02730
    02731       if (x == stop) return VETSB_ENTERED_STATION | (VehicleEnterTileStatus)(station_id << VETS_STATION_ID_OFFSET); // enter station
    02732       if (x < stop) {
    02733         uint16 spd;
    02734
    02735         v->vehstatus |= VS_TRAIN_SLOWING;
    02736         spd = max(0, (stop - x) * 20 - 15);
    02737         if (spd < v->cur_speed) v->cur_speed = spd;
    02738       }
    02739     }
    02740   } else if (v->type == VEH_ROAD) {
    02741     RoadVehicle *rv = RoadVehicle::From(v);
    02742     if (rv->state < RVSB_IN_ROAD_STOP && !IsReversingRoadTrackdir((Trackdir)rv->state) && rv->frame == 0) {
    02743       if (IsRoadStop(tile) && rv->IsRoadVehFront()) {
    02744         /* Attempt to allocate a parking bay in a road stop */
    02745         return RoadStop::GetByTile(tile, GetRoadStopType(tile))->Enter(rv) ? VETSB_CONTINUE : VETSB_CANNOT_ENTER;
    02746       }
    02747     }
    02748   }
    02749
    02750   return VETSB_CONTINUE;
    02751 }
    02752
    02759 static bool StationHandleBigTick(BaseStation *st)
    02760 {
    02761   if (!st->IsInUse() && ++st->delete_ctr >= 8) {
    02762     delete st;
    02763     return false;
    02764   }
    02765
    02766   if ((st->facilities & FACIL_WAYPOINT) == 0) UpdateStationAcceptance(Station::From(st), true);
    02767
    02768   return true;
    02769 }
    02770
    02771 static inline void byte_inc_sat(byte *p)
    02772 {
    02773   byte b = *p + 1;
    02774   if (b != 0) *p = b;
    02775 }
    02776
    02777 static void UpdateStationRating(Station *st)
    02778 {
    02779   bool waiting_changed = false;
    02780
    02781   byte_inc_sat(&st->time_since_load);
    02782   byte_inc_sat(&st->time_since_unload);
    02783
    02784   const CargoSpec *cs;
    02785   FOR_ALL_CARGOSPECS(cs) {
    02786     GoodsEntry *ge = &st->goods[cs->Index()];
    02787     /* Slowly increase the rating back to his original level in the case we
    02788      *  didn't deliver cargo yet to this station. This happens when a bribe
    02789      *  failed while you didn't moved that cargo yet to a station. */
    02790     if (!HasBit(ge->acceptance_pickup, GoodsEntry::PICKUP) && ge->rating < INITIAL_STATION_RATING) {
    02791       ge->rating++;
    02792     }
    02793
    02794     /* Only change the rating if we are moving this cargo */
    02795     if (HasBit(ge->acceptance_pickup, GoodsEntry::PICKUP)) {
    02796       byte_inc_sat(&ge->days_since_pickup);
    02797
    02798       bool skip = false;
    02799       int rating = 0;
    02800       uint waiting = ge->cargo.Count();
    02801
    02802       if (HasBit(cs->callback_mask, CBM_CARGO_STATION_RATING_CALC)) {
    02803         /* Perform custom station rating. If it succeeds the speed, days in transit and
    02804          * waiting cargo ratings must not be executed. */
    02805
    02806         /* NewGRFs expect last speed to be 0xFF when no vehicle has arrived yet. */
    02807         uint last_speed = ge->last_speed;
    02808         if (last_speed == 0) last_speed = 0xFF;
    02809
    02810         uint32 var18 = min(ge->days_since_pickup, 0xFF) | (min(waiting, 0xFFFF) << 8) | (min(last_speed, 0xFF) << 24);
    02811         /* Convert to the 'old' vehicle types */
    02812         uint32 var10 = (st->last_vehicle_type == VEH_INVALID) ? 0x0 : (st->last_vehicle_type + 0x10);
    02813         uint16 callback = GetCargoCallback(CBID_CARGO_STATION_RATING_CALC, var10, var18, cs);
    02814         if (callback != CALLBACK_FAILED) {
    02815           skip = true;
    02816           rating = GB(callback, 0, 14);
    02817
    02818           /* Simulate a 15 bit signed value */
    02819           if (HasBit(callback, 14)) rating -= 0x4000;
    02820         }
    02821       }
    02822
    02823       if (!skip) {
    02824         int b = ge->last_speed - 85;
    02825         if (b >= 0) rating += b >> 2;
    02826
    02827         byte days = ge->days_since_pickup;
    02828         if (st->last_vehicle_type == VEH_SHIP) days >>= 2;
    02829         (days > 21) ||
    02830         (rating += 25, days > 12) ||
    02831         (rating += 25, days > 6) ||
    02832         (rating += 45, days > 3) ||
    02833         (rating += 35, true);
    02834
    02835         (rating -= 90, waiting > 1500) ||
    02836         (rating += 55, waiting > 1000) ||
    02837         (rating += 35, waiting > 600) ||
    02838         (rating += 10, waiting > 300) ||
    02839         (rating += 20, waiting > 100) ||
    02840         (rating += 10, true);
    02841       }
    02842
    02843       if (Company::IsValidID(st->owner) && HasBit(st->town->statues, st->owner)) rating += 26;
    02844
    02845       byte age = ge->last_age;
    02846       (age >= 3) ||
    02847       (rating += 10, age >= 2) ||
    02848       (rating += 10, age >= 1) ||
    02849       (rating += 13, true);
    02850
    02851       {
    02852         int or_ = ge->rating; // old rating
    02853
    02854         /* only modify rating in steps of -2, -1, 0, 1 or 2 */
    02855         ge->rating = rating = or_ + Clamp(Clamp(rating, 0, 255) - or_, -2, 2);
    02856
    02857         /* if rating is <= 64 and more than 200 items waiting,
    02858          * remove some random amount of goods from the station */
    02859         if (rating <= 64 && waiting >= 200) {
    02860           int dec = Random() & 0x1F;
    02861           if (waiting < 400) dec &= 7;
    02862           waiting -= dec + 1;
    02863           waiting_changed = true;
    02864         }
    02865
    02866         /* if rating is <= 127 and there are any items waiting, maybe remove some goods. */
    02867         if (rating <= 127 && waiting != 0) {
    02868           uint32 r = Random();
    02869           if (rating <= (int)GB(r, 0, 7)) {
    02870             /* Need to have int, otherwise it will just overflow etc. */
    02871             waiting = max((int)waiting - (int)GB(r, 8, 2) - 1, 0);
    02872             waiting_changed = true;
    02873           }
    02874         }
    02875
    02876         /* At some point we really must cap the cargo. Previously this
    02877          * was a strict 4095, but now we'll have a less strict, but
    02878          * increasingly agressive truncation of the amount of cargo. */
    02879         static const uint WAITING_CARGO_THRESHOLD  = 1 << 12;
    02880         static const uint WAITING_CARGO_CUT_FACTOR = 1 <<  6;
    02881         static const uint MAX_WAITING_CARGO        = 1 << 15;
    02882
    02883         if (waiting > WAITING_CARGO_THRESHOLD) {
    02884           uint difference = waiting - WAITING_CARGO_THRESHOLD;
    02885           waiting -= (difference / WAITING_CARGO_CUT_FACTOR);
    02886
    02887           waiting = min(waiting, MAX_WAITING_CARGO);
    02888           waiting_changed = true;
    02889         }
    02890
    02891         if (waiting_changed) ge->cargo.Truncate(waiting);
    02892       }
    02893     }
    02894   }
    02895
    02896   StationID index = st->index;
    02897   if (waiting_changed) {
    02898     SetWindowDirty(WC_STATION_VIEW, index); // update whole window
    02899   } else {
    02900     SetWindowWidgetDirty(WC_STATION_VIEW, index, SVW_RATINGLIST); // update only ratings list
    02901   }
    02902 }
    02903
    02904 /* called for every station each tick */
    02905 static void StationHandleSmallTick(BaseStation *st)
    02906 {
    02907   if ((st->facilities & FACIL_WAYPOINT) != 0 || !st->IsInUse()) return;
    02908
    02909   byte b = st->delete_ctr + 1;
    02910   if (b >= 185) b = 0;
    02911   st->delete_ctr = b;
    02912
    02913   if (b == 0) UpdateStationRating(Station::From(st));
    02914 }
    02915
    02916 void OnTick_Station()
    02917 {
    02918   if (_game_mode == GM_EDITOR) return;
    02919
    02920   BaseStation *st;
    02921   FOR_ALL_BASE_STATIONS(st) {
    02922     StationHandleSmallTick(st);
    02923
    02924     /* Run 250 tick interval trigger for station animation.
    02925      * Station index is included so that triggers are not all done
    02926      * at the same time. */
    02927     if ((_tick_counter + st->index) % 250 == 0) {
    02928       /* Stop processing this station if it was deleted */
    02929       if (!StationHandleBigTick(st)) continue;
    02930       StationAnimationTrigger(st, st->xy, STAT_ANIM_250_TICKS);
    02931     }
    02932   }
    02933 }
    02934
    02935 void StationMonthlyLoop()
    02936 {
    02937   /* not used */
    02938 }
    02939
    02940
    02941 void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint radius)
    02942 {
    02943   Station *st;
    02944
    02945   FOR_ALL_STATIONS(st) {
    02946     if (st->owner == owner &&
    02947         DistanceManhattan(tile, st->xy) <= radius) {
    02948       for (CargoID i = 0; i < NUM_CARGO; i++) {
    02949         GoodsEntry *ge = &st->goods[i];
    02950
    02951         if (ge->acceptance_pickup != 0) {
    02952           ge->rating = Clamp(ge->rating + amount, 0, 255);
    02953         }
    02954       }
    02955     }
    02956   }
    02957 }
    02958
    02959 static void UpdateStationWaiting(Station *st, CargoID type, uint amount, SourceType source_type, SourceID source_id)
    02960 {
    02961   st->goods[type].cargo.Append(new CargoPacket(st->index, st->xy, amount, source_type, source_id));
    02962   SetBit(st->goods[type].acceptance_pickup, GoodsEntry::PICKUP);
    02963
    02964   StationAnimationTrigger(st, st->xy, STAT_ANIM_NEW_CARGO, type);
    02965
    02966   SetWindowDirty(WC_STATION_VIEW, st->index);
    02967   st->MarkTilesDirty(true);
    02968 }
    02969
    02970 static bool IsUniqueStationName(const char *name)
    02971 {
    02972   const Station *st;
    02973
    02974   FOR_ALL_STATIONS(st) {
    02975     if (st->name != NULL && strcmp(st->name, name) == 0) return false;
    02976   }
    02977
    02978   return true;
    02979 }
    02980
    02989 CommandCost CmdRenameStation(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02990 {
    02991   Station *st = Station::GetIfValid(p1);
    02992   if (st == NULL || !CheckOwnership(st->owner)) return CMD_ERROR;
    02993
    02994   bool reset = StrEmpty(text);
    02995
    02996   if (!reset) {
    02997     if (strlen(text) >= MAX_LENGTH_STATION_NAME_BYTES) return CMD_ERROR;
    02998     if (!IsUniqueStationName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
    02999   }
    03000
    03001   if (flags & DC_EXEC) {
    03002     free(st->name);
    03003     st->name = reset ? NULL : strdup(text);
    03004
    03005     st->UpdateVirtCoord();
    03006     InvalidateWindowData(WC_STATION_LIST, st->owner, 1);
    03007   }
    03008
    03009   return CommandCost();
    03010 }
    03011
    03018 void FindStationsAroundTiles(const TileArea &location, StationList *stations)
    03019 {
    03020   /* area to search = producer plus station catchment radius */
    03021   int max_rad = (_settings_game.station.modified_catchment ? MAX_CATCHMENT : CA_UNMODIFIED);
    03022
    03023   for (int dy = -max_rad; dy < location.h + max_rad; dy++) {
    03024     for (int dx = -max_rad; dx < location.w + max_rad; dx++) {
    03025       TileIndex cur_tile = TileAddWrap(location.tile, dx, dy);
    03026       if (cur_tile == INVALID_TILE || !IsTileType(cur_tile, MP_STATION)) continue;
    03027
    03028       Station *st = Station::GetByTile(cur_tile);
    03029       if (st == NULL) continue;
    03030
    03031       if (_settings_game.station.modified_catchment) {
    03032         int rad = st->GetCatchmentRadius();
    03033         if (dx < -rad || dx >= rad + location.w || dy < -rad || dy >= rad + location.h) continue;
    03034       }
    03035
    03036       /* Insert the station in the set. This will fail if it has
    03037        * already been added.
    03038        */
    03039       stations->Include(st);
    03040     }
    03041   }
    03042 }
    03043
    03048 const StationList *StationFinder::GetStations()
    03049 {
    03050   if (this->tile != INVALID_TILE) {
    03051     FindStationsAroundTiles(*this, &this->stations);
    03052     this->tile = INVALID_TILE;
    03053   }
    03054   return &this->stations;
    03055 }
    03056
    03057 uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations)
    03058 {
    03059   /* Return if nothing to do. Also the rounding below fails for 0. */
    03060   if (amount == 0) return 0;
    03061
    03062   Station *st1 = NULL;   // Station with best rating
    03063   Station *st2 = NULL;   // Second best station
    03064   uint best_rating1 = 0; // rating of st1
    03065   uint best_rating2 = 0; // rating of st2
    03066
    03067   for (Station * const *st_iter = all_stations->Begin(); st_iter != all_stations->End(); ++st_iter) {
    03068     Station *st = *st_iter;
    03069
    03070     /* Is the station reserved exclusively for somebody else? */
    03071     if (st->town->exclusive_counter > 0 && st->town->exclusivity != st->owner) continue;
    03072
    03073     if (st->goods[type].rating == 0) continue; // Lowest possible rating, better not to give cargo anymore
    03074
    03075     if (_settings_game.order.selectgoods && st->goods[type].last_speed == 0) continue; // Selectively servicing stations, and not this one
    03076
    03077     if (IsCargoInClass(type, CC_PASSENGERS)) {
    03078       if (st->facilities == FACIL_TRUCK_STOP) continue; // passengers are never served by just a truck stop
    03079     } else {
    03080       if (st->facilities == FACIL_BUS_STOP) continue; // non-passengers are never served by just a bus stop
    03081     }
    03082
    03083     /* This station can be used, add it to st1/st2 */
    03084     if (st1 == NULL || st->goods[type].rating >= best_rating1) {
    03085       st2 = st1; best_rating2 = best_rating1; st1 = st; best_rating1 = st->goods[type].rating;
    03086     } else if (st2 == NULL || st->goods[type].rating >= best_rating2) {
    03087       st2 = st; best_rating2 = st->goods[type].rating;
    03088     }
    03089   }
    03090
    03091   /* no stations around at all? */
    03092   if (st1 == NULL) return 0;
    03093
    03094   if (st2 == NULL) {
    03095     /* only one station around */
    03096     uint moved = amount * best_rating1 / 256 + 1;
    03097     UpdateStationWaiting(st1, type, moved, source_type, source_id);
    03098     return moved;
    03099   }
    03100
    03101   /* several stations around, the best two (highest rating) are in st1 and st2 */
    03102   assert(st1 != NULL);
    03103   assert(st2 != NULL);
    03104   assert(best_rating1 != 0 || best_rating2 != 0);
    03105
    03106   /* the 2nd highest one gets a penalty */
    03107   best_rating2 >>= 1;
    03108
    03109   /* amount given to station 1 */
    03110   uint t = (best_rating1 * (amount + 1)) / (best_rating1 + best_rating2);
    03111
    03112   uint moved = 0;
    03113   if (t != 0) {
    03114     moved = t * best_rating1 / 256 + 1;
    03115     amount -= t;
    03116     UpdateStationWaiting(st1, type, moved, source_type, source_id);
    03117   }
    03118
    03119   if (amount != 0) {
    03120     amount = amount * best_rating2 / 256 + 1;
    03121     moved += amount;
    03122     UpdateStationWaiting(st2, type, amount, source_type, source_id);
    03123   }
    03124
    03125   return moved;
    03126 }
    03127
    03128 void BuildOilRig(TileIndex tile)
    03129 {
    03130   if (!Station::CanAllocateItem()) {
    03131     DEBUG(misc, 0, "Can't allocate station for oilrig at 0x%X, reverting to oilrig only", tile);
    03132     return;
    03133   }
    03134
    03135   Station *st = new Station(tile);
    03136   st->town = ClosestTownFromTile(tile, UINT_MAX);
    03137
    03138   st->string_id = GenerateStationName(st, tile, STATIONNAMING_OILRIG);
    03139
    03140   assert(IsTileType(tile, MP_INDUSTRY));
    03141   DeleteAnimatedTile(tile);
    03142   MakeOilrig(tile, st->index, GetWaterClass(tile));
    03143
    03144   st->owner = OWNER_NONE;
    03145   st->airport_type = AT_OILRIG;
    03146   st->airport_tile = tile;
    03147   st->dock_tile = tile;
    03148   st->facilities = FACIL_AIRPORT | FACIL_DOCK;
    03149   st->build_date = _date;
    03150
    03151   st->rect.BeforeAddTile(tile, StationRect::ADD_FORCE);
    03152
    03153   for (CargoID j = 0; j < NUM_CARGO; j++) {
    03154     st->goods[j].acceptance_pickup = 0;
    03155     st->goods[j].days_since_pickup = 255;
    03156     st->goods[j].rating = INITIAL_STATION_RATING;
    03157     st->goods[j].last_speed = 0;
    03158     st->goods[j].last_age = 255;
    03159   }
    03160
    03161   st->UpdateVirtCoord();
    03162   UpdateStationAcceptance(st, false);
    03163   st->RecomputeIndustriesNear();
    03164 }
    03165
    03166 void DeleteOilRig(TileIndex tile)
    03167 {
    03168   Station *st = Station::GetByTile(tile);
    03169
    03170   MakeWaterKeepingClass(tile, OWNER_NONE);
    03171   MarkTileDirtyByTile(tile);
    03172
    03173   st->dock_tile = INVALID_TILE;
    03174   st->airport_tile = INVALID_TILE;
    03175   st->facilities &= ~(FACIL_AIRPORT | FACIL_DOCK);
    03176   st->airport_flags = 0;
    03177
    03178   st->rect.AfterRemoveTile(st, tile);
    03179
    03180   st->UpdateVirtCoord();
    03181   st->RecomputeIndustriesNear();
    03182   if (!st->IsInUse()) delete st;
    03183 }
    03184
    03185 static void ChangeTileOwner_Station(TileIndex tile, Owner old_owner, Owner new_owner)
    03186 {
    03187   if (IsDriveThroughStopTile(tile)) {
    03188     for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
    03189       /* Update all roadtypes, no matter if they are present */
    03190       if (GetRoadOwner(tile, rt) == old_owner) {
    03191         SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
    03192       }
    03193     }
    03194   }
    03195
    03196   if (!IsTileOwner(tile, old_owner)) return;
    03197
    03198   if (new_owner != INVALID_OWNER) {
    03199     /* for buoys, owner of tile is owner of water, st->owner == OWNER_NONE */
    03200     SetTileOwner(tile, new_owner);
    03201     InvalidateWindowClassesData(WC_STATION_LIST, 0);
    03202   } else {
    03203     if (IsDriveThroughStopTile(tile)) {
    03204       /* Remove the drive-through road stop */
    03205       DoCommand(tile, 0, (GetStationType(tile) == STATION_TRUCK) ? ROADSTOP_TRUCK : ROADSTOP_BUS, DC_EXEC | DC_BANKRUPT, CMD_REMOVE_ROAD_STOP);
    03206       assert(IsTileType(tile, MP_ROAD));
    03207       /* Change owner of tile and all roadtypes */
    03208       ChangeTileOwner(tile, old_owner, new_owner);
    03209     } else {
    03210       DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
    03211       /* Set tile owner of water under (now removed) buoy and dock to OWNER_NONE.
    03212        * Update owner of buoy if it was not removed (was in orders).
    03213        * Do not update when owned by OWNER_WATER (sea and rivers). */
    03214       if ((IsTileType(tile, MP_WATER) || IsBuoyTile(tile)) && IsTileOwner(tile, old_owner)) SetTileOwner(tile, OWNER_NONE);
    03215     }
    03216   }
    03217 }
    03218
    03227 static bool CanRemoveRoadWithStop(TileIndex tile, DoCommandFlag flags)
    03228 {
    03229   /* Yeah... water can always remove stops, right? */
    03230   if (_current_company == OWNER_WATER) return true;
    03231
    03232   Owner road_owner = _current_company;
    03233   Owner tram_owner = _current_company;
    03234
    03235   RoadTypes rts = GetRoadTypes(tile);
    03236   if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    03237   if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    03238
    03239   if ((road_owner != OWNER_TOWN && !CheckOwnership(road_owner)) || !CheckOwnership(tram_owner)) return false;
    03240
    03241   return road_owner != OWNER_TOWN || CheckAllowRemoveRoad(tile, GetAnyRoadBits(tile, ROADTYPE_ROAD), OWNER_TOWN, ROADTYPE_ROAD, flags);
    03242 }
    03243
    03244 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags)
    03245 {
    03246   if (flags & DC_AUTO) {
    03247     switch (GetStationType(tile)) {
    03248       default: break;
    03249       case STATION_RAIL:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_RAILROAD);
    03250       case STATION_WAYPOINT: return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
    03251       case STATION_AIRPORT:  return_cmd_error(STR_ERROR_MUST_DEMOLISH_AIRPORT_FIRST);
    03252       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);
    03253       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);
    03254       case STATION_BUOY:     return_cmd_error(STR_ERROR_BUOY_IN_THE_WAY);
    03255       case STATION_DOCK:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_DOCK_FIRST);
    03256       case STATION_OILRIG:
    03257         SetDParam(0, STR_INDUSTRY_NAME_OIL_RIG);
    03258         return_cmd_error(STR_ERROR_UNMOVABLE_OBJECT_IN_THE_WAY);
    03259     }
    03260   }
    03261
    03262   switch (GetStationType(tile)) {
    03263     case STATION_RAIL:     return RemoveRailStation(tile, flags);
    03264     case STATION_WAYPOINT: return RemoveRailWaypoint(tile, flags);
    03265     case STATION_AIRPORT:  return RemoveAirport(tile, flags);
    03266     case STATION_TRUCK:
    03267       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags))
    03268         return_cmd_error(STR_ERROR_MUST_DEMOLISH_TRUCK_STATION_FIRST);
    03269       return RemoveRoadStop(tile, flags);
    03270     case STATION_BUS:
    03271       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags))
    03272         return_cmd_error(STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST);
    03273       return RemoveRoadStop(tile, flags);
    03274     case STATION_BUOY:     return RemoveBuoy(tile, flags);
    03275     case STATION_DOCK:     return RemoveDock(tile, flags);
    03276     default: break;
    03277   }
    03278
    03279   return CMD_ERROR;
    03280 }
    03281
    03282 static CommandCost TerraformTile_Station(TileIndex tile, DoCommandFlag flags, uint z_new, Slope tileh_new)
    03283 {
    03284   if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
    03285     /* TODO: If you implement newgrf callback 149 'land slope check', you have to decide what to do with it here.
    03286      *       TTDP does not call it.
    03287      */
    03288     if (!IsSteepSlope(tileh_new) && (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new))) {
    03289       switch (GetStationType(tile)) {
    03290         case STATION_WAYPOINT:
    03291         case STATION_RAIL: {
    03292           DiagDirection direction = AxisToDiagDir(GetRailStationAxis(tile));
    03293           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03294           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03295           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03296         }
    03297
    03298         case STATION_AIRPORT:
    03299           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03300
    03301         case STATION_TRUCK:
    03302         case STATION_BUS: {
    03303           DiagDirection direction = GetRoadStopDir(tile);
    03304           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03305           if (IsDriveThroughStopTile(tile)) {
    03306             if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03307           }
    03308           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03309         }
    03310
    03311         default: break;
    03312       }
    03313     }
    03314   }
    03315   return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    03316 }
    03317
    03318
    03319 extern const TileTypeProcs _tile_type_station_procs = {
    03320   DrawTile_Station,           // draw_tile_proc
    03321   GetSlopeZ_Station,          // get_slope_z_proc
    03322   ClearTile_Station,          // clear_tile_proc
    03323   NULL,                       // add_accepted_cargo_proc
    03324   GetTileDesc_Station,        // get_tile_desc_proc
    03325   GetTileTrackStatus_Station, // get_tile_track_status_proc
    03326   ClickTile_Station,          // click_tile_proc
    03327   AnimateTile_Station,        // animate_tile_proc
    03328   TileLoop_Station,           // tile_loop_clear
    03329   ChangeTileOwner_Station,    // change_tile_owner_clear
    03330   NULL,                       // add_produced_cargo_proc
    03331   VehicleEnter_Station,       // vehicle_enter_tile_proc
    03332   GetFoundation_Station,      // get_foundation_proc
    03333   TerraformTile_Station,      // terraform_tile_proc
    03334 };