# station_cmd.cpp

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    00001 /* $Id$ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
    00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
    00008  */
    00009
    00012 #include "stdafx.h"
    00013 #include "aircraft.h"
    00014 #include "bridge_map.h"
    00015 #include "cmd_helper.h"
    00016 #include "viewport_func.h"
    00017 #include "command_func.h"
    00018 #include "town.h"
    00019 #include "news_func.h"
    00020 #include "train.h"
    00021 #include "roadveh.h"
    00022 #include "industry.h"
    00023 #include "newgrf_cargo.h"
    00024 #include "newgrf_debug.h"
    00025 #include "newgrf_station.h"
    00026 #include "pathfinder/yapf/yapf_cache.h"
    00027 #include "road_internal.h" /* For drawing catenary/checking road removal */
    00028 #include "autoslope.h"
    00029 #include "water.h"
    00030 #include "station_gui.h"
    00031 #include "strings_func.h"
    00032 #include "clear_func.h"
    00033 #include "window_func.h"
    00034 #include "date_func.h"
    00035 #include "vehicle_func.h"
    00036 #include "string_func.h"
    00037 #include "animated_tile_func.h"
    00038 #include "elrail_func.h"
    00039 #include "station_base.h"
    00040 #include "roadstop_base.h"
    00041 #include "newgrf_railtype.h"
    00042 #include "waypoint_base.h"
    00043 #include "waypoint_func.h"
    00044 #include "pbs.h"
    00045 #include "debug.h"
    00046 #include "core/random_func.hpp"
    00047 #include "company_base.h"
    00048 #include "moving_average.h"
    00049 #include "table/airporttile_ids.h"
    00050 #include "newgrf_airporttiles.h"
    00051 #include "order_backup.h"
    00052 #include "company_gui.h"
    00053
    00054 #include "table/strings.h"
    00055
    00062 bool IsHangar(TileIndex t)
    00063 {
    00064   assert(IsTileType(t, MP_STATION));
    00065
    00066   /* If the tile isn't an airport there's no chance it's a hangar. */
    00067   if (!IsAirport(t)) return false;
    00068
    00069   const Station *st = Station::GetByTile(t);
    00070   const AirportSpec *as = st->airport.GetSpec();
    00071
    00072   for (uint i = 0; i < as->nof_depots; i++) {
    00073     if (st->airport.GetHangarTile(i) == t) return true;
    00074   }
    00075
    00076   return false;
    00077 }
    00078
    00086 template <class T>
    00087 CommandCost GetStationAround(TileArea ta, StationID closest_station, T **st)
    00088 {
    00089   ta.tile -= TileDiffXY(1, 1);
    00090   ta.w    += 2;
    00091   ta.h    += 2;
    00092
    00093   /* check around to see if there's any stations there */
    00094   TILE_AREA_LOOP(tile_cur, ta) {
    00095     if (IsTileType(tile_cur, MP_STATION)) {
    00096       StationID t = GetStationIndex(tile_cur);
    00097       if (!T::IsValidID(t)) continue;
    00098
    00099       if (closest_station == INVALID_STATION) {
    00100         closest_station = t;
    00101       } else if (closest_station != t) {
    00102         return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00103       }
    00104     }
    00105   }
    00106   *st = (closest_station == INVALID_STATION) ? NULL : T::Get(closest_station);
    00107   return CommandCost();
    00108 }
    00109
    00115 typedef bool (*CMSAMatcher)(TileIndex tile);
    00116
    00123 static int CountMapSquareAround(TileIndex tile, CMSAMatcher cmp)
    00124 {
    00125   int num = 0;
    00126
    00127   for (int dx = -3; dx <= 3; dx++) {
    00128     for (int dy = -3; dy <= 3; dy++) {
    00129       TileIndex t = TileAddWrap(tile, dx, dy);
    00130       if (t != INVALID_TILE && cmp(t)) num++;
    00131     }
    00132   }
    00133
    00134   return num;
    00135 }
    00136
    00142 static bool CMSAMine(TileIndex tile)
    00143 {
    00144   /* No industry */
    00145   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00146
    00147   const Industry *ind = Industry::GetByTile(tile);
    00148
    00149   /* No extractive industry */
    00150   if ((GetIndustrySpec(ind->type)->life_type & INDUSTRYLIFE_EXTRACTIVE) == 0) return false;
    00151
    00152   for (uint i = 0; i < lengthof(ind->produced_cargo); i++) {
    00153     /* The industry extracts something non-liquid, i.e. no oil or plastic, so it is a mine.
    00154      * Also the production of passengers and mail is ignored. */
    00155     if (ind->produced_cargo[i] != CT_INVALID &&
    00156         (CargoSpec::Get(ind->produced_cargo[i])->classes & (CC_LIQUID | CC_PASSENGERS | CC_MAIL)) == 0) {
    00157       return true;
    00158     }
    00159   }
    00160
    00161   return false;
    00162 }
    00163
    00169 static bool CMSAWater(TileIndex tile)
    00170 {
    00171   return IsTileType(tile, MP_WATER) && IsWater(tile);
    00172 }
    00173
    00179 static bool CMSATree(TileIndex tile)
    00180 {
    00181   return IsTileType(tile, MP_TREES);
    00182 }
    00183
    00189 static bool CMSAForest(TileIndex tile)
    00190 {
    00191   /* No industry */
    00192   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00193
    00194   const Industry *ind = Industry::GetByTile(tile);
    00195
    00196   /* No extractive industry */
    00197   if ((GetIndustrySpec(ind->type)->life_type & INDUSTRYLIFE_ORGANIC) == 0) return false;
    00198
    00199   for (uint i = 0; i < lengthof(ind->produced_cargo); i++) {
    00200     /* The industry produces wood. */
    00201     if (ind->produced_cargo[i] != CT_INVALID && CargoSpec::Get(ind->produced_cargo[i])->label == 'WOOD') return true;
    00202   }
    00203
    00204   return false;
    00205 }
    00206
    00207 #define M(x) ((x) - STR_SV_STNAME)
    00208
    00209 enum StationNaming {
    00210   STATIONNAMING_RAIL,
    00211   STATIONNAMING_ROAD,
    00212   STATIONNAMING_AIRPORT,
    00213   STATIONNAMING_OILRIG,
    00214   STATIONNAMING_DOCK,
    00215   STATIONNAMING_HELIPORT,
    00216 };
    00217
    00219 struct StationNameInformation {
    00220   uint32 free_names;
    00221   bool *indtypes;
    00222 };
    00223
    00232 static bool FindNearIndustryName(TileIndex tile, void *user_data)
    00233 {
    00234   /* All already found industry types */
    00235   StationNameInformation *sni = (StationNameInformation*)user_data;
    00236   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00237
    00238   /* If the station name is undefined it means that it doesn't name a station */
    00239   IndustryType indtype = GetIndustryType(tile);
    00240   if (GetIndustrySpec(indtype)->station_name == STR_UNDEFINED) return false;
    00241
    00242   /* In all cases if an industry that provides a name is found two of
    00243    * the standard names will be disabled. */
    00244   sni->free_names &= ~(1 << M(STR_SV_STNAME_OILFIELD) | 1 << M(STR_SV_STNAME_MINES));
    00245   return !sni->indtypes[indtype];
    00246 }
    00247
    00248 static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming name_class)
    00249 {
    00250   static const uint32 _gen_station_name_bits[] = {
    00251     0,                                       // STATIONNAMING_RAIL
    00252     0,                                       // STATIONNAMING_ROAD
    00253     1U << M(STR_SV_STNAME_AIRPORT),          // STATIONNAMING_AIRPORT
    00254     1U << M(STR_SV_STNAME_OILFIELD),         // STATIONNAMING_OILRIG
    00255     1U << M(STR_SV_STNAME_DOCKS),            // STATIONNAMING_DOCK
    00256     1U << M(STR_SV_STNAME_HELIPORT),         // STATIONNAMING_HELIPORT
    00257   };
    00258
    00259   const Town *t = st->town;
    00260   uint32 free_names = UINT32_MAX;
    00261
    00262   bool indtypes[NUM_INDUSTRYTYPES];
    00263   memset(indtypes, 0, sizeof(indtypes));
    00264
    00265   const Station *s;
    00266   FOR_ALL_STATIONS(s) {
    00267     if (s != st && s->town == t) {
    00268       if (s->indtype != IT_INVALID) {
    00269         indtypes[s->indtype] = true;
    00270         continue;
    00271       }
    00272       uint str = M(s->string_id);
    00273       if (str <= 0x20) {
    00274         if (str == M(STR_SV_STNAME_FOREST)) {
    00275           str = M(STR_SV_STNAME_WOODS);
    00276         }
    00277         ClrBit(free_names, str);
    00278       }
    00279     }
    00280   }
    00281
    00282   TileIndex indtile = tile;
    00283   StationNameInformation sni = { free_names, indtypes };
    00284   if (CircularTileSearch(&indtile, 7, FindNearIndustryName, &sni)) {
    00285     /* An industry has been found nearby */
    00286     IndustryType indtype = GetIndustryType(indtile);
    00287     const IndustrySpec *indsp = GetIndustrySpec(indtype);
    00288     /* STR_NULL means it only disables oil rig/mines */
    00289     if (indsp->station_name != STR_NULL) {
    00290       st->indtype = indtype;
    00291       return STR_SV_STNAME_FALLBACK;
    00292     }
    00293   }
    00294
    00295   /* Oil rigs/mines name could be marked not free by looking for a near by industry. */
    00296   free_names = sni.free_names;
    00297
    00298   /* check default names */
    00299   uint32 tmp = free_names & _gen_station_name_bits[name_class];
    00300   if (tmp != 0) return STR_SV_STNAME + FindFirstBit(tmp);
    00301
    00302   /* check mine? */
    00303   if (HasBit(free_names, M(STR_SV_STNAME_MINES))) {
    00304     if (CountMapSquareAround(tile, CMSAMine) >= 2) {
    00305       return STR_SV_STNAME_MINES;
    00306     }
    00307   }
    00308
    00309   /* check close enough to town to get central as name? */
    00310   if (DistanceMax(tile, t->xy) < 8) {
    00311     if (HasBit(free_names, M(STR_SV_STNAME))) return STR_SV_STNAME;
    00312
    00313     if (HasBit(free_names, M(STR_SV_STNAME_CENTRAL))) return STR_SV_STNAME_CENTRAL;
    00314   }
    00315
    00316   /* Check lakeside */
    00317   if (HasBit(free_names, M(STR_SV_STNAME_LAKESIDE)) &&
    00318       DistanceFromEdge(tile) < 20 &&
    00319       CountMapSquareAround(tile, CMSAWater) >= 5) {
    00320     return STR_SV_STNAME_LAKESIDE;
    00321   }
    00322
    00323   /* Check woods */
    00324   if (HasBit(free_names, M(STR_SV_STNAME_WOODS)) && (
    00325         CountMapSquareAround(tile, CMSATree) >= 8 ||
    00326         CountMapSquareAround(tile, CMSAForest) >= 2)
    00327       ) {
    00328     return _settings_game.game_creation.landscape == LT_TROPIC ? STR_SV_STNAME_FOREST : STR_SV_STNAME_WOODS;
    00329   }
    00330
    00331   /* check elevation compared to town */
    00332   uint z = GetTileZ(tile);
    00333   uint z2 = GetTileZ(t->xy);
    00334   if (z < z2) {
    00335     if (HasBit(free_names, M(STR_SV_STNAME_VALLEY))) return STR_SV_STNAME_VALLEY;
    00336   } else if (z > z2) {
    00337     if (HasBit(free_names, M(STR_SV_STNAME_HEIGHTS))) return STR_SV_STNAME_HEIGHTS;
    00338   }
    00339
    00340   /* check direction compared to town */
    00341   static const int8 _direction_and_table[] = {
    00342     ~( (1 << M(STR_SV_STNAME_WEST))  | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00343     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00344     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00345     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_EAST)) ),
    00346   };
    00347
    00348   free_names &= _direction_and_table[
    00349     (TileX(tile) < TileX(t->xy)) +
    00350     (TileY(tile) < TileY(t->xy)) * 2];
    00351
    00352   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));
    00353   return (tmp == 0) ? STR_SV_STNAME_FALLBACK : (STR_SV_STNAME + FindFirstBit(tmp));
    00354 }
    00355 #undef M
    00356
    00362 static Station *GetClosestDeletedStation(TileIndex tile)
    00363 {
    00364   uint threshold = 8;
    00365   Station *best_station = NULL;
    00366   Station *st;
    00367
    00368   FOR_ALL_STATIONS(st) {
    00369     if (!st->IsInUse() && st->owner == _current_company) {
    00370       uint cur_dist = DistanceManhattan(tile, st->xy);
    00371
    00372       if (cur_dist < threshold) {
    00373         threshold = cur_dist;
    00374         best_station = st;
    00375       }
    00376     }
    00377   }
    00378
    00379   return best_station;
    00380 }
    00381
    00382
    00383 void Station::GetTileArea(TileArea *ta, StationType type) const
    00384 {
    00385   switch (type) {
    00386     case STATION_RAIL:
    00387       *ta = this->train_station;
    00388       return;
    00389
    00390     case STATION_AIRPORT:
    00391       *ta = this->airport;
    00392       return;
    00393
    00394     case STATION_TRUCK:
    00395       *ta = this->truck_station;
    00396       return;
    00397
    00398     case STATION_BUS:
    00399       *ta = this->bus_station;
    00400       return;
    00401
    00402     case STATION_DOCK:
    00403     case STATION_OILRIG:
    00404       ta->tile = this->dock_tile;
    00405       break;
    00406
    00407     default: NOT_REACHED();
    00408   }
    00409
    00410   ta->w = 1;
    00411   ta->h = 1;
    00412 }
    00413
    00417 void Station::UpdateVirtCoord()
    00418 {
    00419   Point pt = RemapCoords2(TileX(this->xy) * TILE_SIZE, TileY(this->xy) * TILE_SIZE);
    00420
    00421   pt.y -= 32;
    00422   if ((this->facilities & FACIL_AIRPORT) && this->airport.type == AT_OILRIG) pt.y -= 16;
    00423
    00424   SetDParam(0, this->index);
    00425   SetDParam(1, this->facilities);
    00426   this->sign.UpdatePosition(pt.x, pt.y, STR_VIEWPORT_STATION);
    00427
    00428   SetWindowDirty(WC_STATION_VIEW, this->index);
    00429 }
    00430
    00432 void UpdateAllStationVirtCoords()
    00433 {
    00434   BaseStation *st;
    00435
    00436   FOR_ALL_BASE_STATIONS(st) {
    00437     st->UpdateVirtCoord();
    00438   }
    00439 }
    00440
    00446 static uint GetAcceptanceMask(const Station *st)
    00447 {
    00448   uint mask = 0;
    00449
    00450   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00451     if (HasBit(st->goods[i].acceptance_pickup, GoodsEntry::GES_ACCEPTANCE)) mask |= 1 << i;
    00452   }
    00453   return mask;
    00454 }
    00455
    00460 static void ShowRejectOrAcceptNews(const Station *st, uint num_items, CargoID *cargo, StringID msg)
    00461 {
    00462   for (uint i = 0; i < num_items; i++) {
    00463     SetDParam(i + 1, CargoSpec::Get(cargo[i])->name);
    00464   }
    00465
    00466   SetDParam(0, st->index);
    00467   AddNewsItem(msg, NS_ACCEPTANCE, NR_STATION, st->index);
    00468 }
    00469
    00477 CargoArray GetProductionAroundTiles(TileIndex tile, int w, int h, int rad)
    00478 {
    00479   CargoArray produced;
    00480
    00481   int x = TileX(tile);
    00482   int y = TileY(tile);
    00483
    00484   /* expand the region by rad tiles on each side
    00485    * while making sure that we remain inside the board. */
    00486   int x2 = min(x + w + rad, MapSizeX());
    00487   int x1 = max(x - rad, 0);
    00488
    00489   int y2 = min(y + h + rad, MapSizeY());
    00490   int y1 = max(y - rad, 0);
    00491
    00492   assert(x1 < x2);
    00493   assert(y1 < y2);
    00494   assert(w > 0);
    00495   assert(h > 0);
    00496
    00497   TileArea ta(TileXY(x1, y1), TileXY(x2 - 1, y2 - 1));
    00498
    00499   /* Loop over all tiles to get the produced cargo of
    00500    * everything except industries */
    00501   TILE_AREA_LOOP(tile, ta) AddProducedCargo(tile, produced);
    00502
    00503   /* Loop over the industries. They produce cargo for
    00504    * anything that is within 'rad' from their bounding
    00505    * box. As such if you have e.g. a oil well the tile
    00506    * area loop might not hit an industry tile while
    00507    * the industry would produce cargo for the station.
    00508    */
    00509   const Industry *i;
    00510   FOR_ALL_INDUSTRIES(i) {
    00511     if (!ta.Intersects(i->location)) continue;
    00512
    00513     for (uint j = 0; j < lengthof(i->produced_cargo); j++) {
    00514       CargoID cargo = i->produced_cargo[j];
    00515       if (cargo != CT_INVALID) produced[cargo]++;
    00516     }
    00517   }
    00518
    00519   return produced;
    00520 }
    00521
    00530 CargoArray GetAcceptanceAroundTiles(TileIndex tile, int w, int h, int rad, uint32 *always_accepted)
    00531 {
    00532   CargoArray acceptance;
    00533   if (always_accepted != NULL) *always_accepted = 0;
    00534
    00535   int x = TileX(tile);
    00536   int y = TileY(tile);
    00537
    00538   /* expand the region by rad tiles on each side
    00539    * while making sure that we remain inside the board. */
    00540   int x2 = min(x + w + rad, MapSizeX());
    00541   int y2 = min(y + h + rad, MapSizeY());
    00542   int x1 = max(x - rad, 0);
    00543   int y1 = max(y - rad, 0);
    00544
    00545   assert(x1 < x2);
    00546   assert(y1 < y2);
    00547   assert(w > 0);
    00548   assert(h > 0);
    00549
    00550   for (int yc = y1; yc != y2; yc++) {
    00551     for (int xc = x1; xc != x2; xc++) {
    00552       TileIndex tile = TileXY(xc, yc);
    00553       AddAcceptedCargo(tile, acceptance, always_accepted);
    00554     }
    00555   }
    00556
    00557   return acceptance;
    00558 }
    00559
    00565 void UpdateStationAcceptance(Station *st, bool show_msg)
    00566 {
    00567   /* old accepted goods types */
    00568   uint old_acc = GetAcceptanceMask(st);
    00569
    00570   /* And retrieve the acceptance. */
    00571   CargoArray acceptance;
    00572   if (!st->rect.IsEmpty()) {
    00573     acceptance = GetAcceptanceAroundTiles(
    00574       TileXY(st->rect.left, st->rect.top),
    00575       st->rect.right  - st->rect.left + 1,
    00576       st->rect.bottom - st->rect.top  + 1,
    00577       st->GetCatchmentRadius(),
    00578       &st->always_accepted
    00579     );
    00580   }
    00581
    00582   /* Adjust in case our station only accepts fewer kinds of goods */
    00583   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00584     uint amt = min(acceptance[i], 15);
    00585
    00586     /* Make sure the station can accept the goods type. */
    00587     bool is_passengers = IsCargoInClass(i, CC_PASSENGERS);
    00588     if ((!is_passengers && !(st->facilities & ~FACIL_BUS_STOP)) ||
    00589         (is_passengers && !(st->facilities & ~FACIL_TRUCK_STOP))) {
    00590       amt = 0;
    00591     }
    00592
    00593     SB(st->goods[i].acceptance_pickup, GoodsEntry::GES_ACCEPTANCE, 1, amt >= 8);
    00594   }
    00595
    00596   /* Only show a message in case the acceptance was actually changed. */
    00597   uint new_acc = GetAcceptanceMask(st);
    00598   if (old_acc == new_acc) return;
    00599
    00600   /* show a message to report that the acceptance was changed? */
    00601   if (show_msg && st->owner == _local_company && st->IsInUse()) {
    00602     /* List of accept and reject strings for different number of
    00603      * cargo types */
    00604     static const StringID accept_msg[] = {
    00605       STR_NEWS_STATION_NOW_ACCEPTS_CARGO,
    00606       STR_NEWS_STATION_NOW_ACCEPTS_CARGO_AND_CARGO,
    00607     };
    00608     static const StringID reject_msg[] = {
    00609       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO,
    00610       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO_OR_CARGO,
    00611     };
    00612
    00613     /* Array of accepted and rejected cargo types */
    00614     CargoID accepts[2] = { CT_INVALID, CT_INVALID };
    00615     CargoID rejects[2] = { CT_INVALID, CT_INVALID };
    00616     uint num_acc = 0;
    00617     uint num_rej = 0;
    00618
    00619     /* Test each cargo type to see if its acceptange has changed */
    00620     for (CargoID i = 0; i < NUM_CARGO; i++) {
    00621       if (HasBit(new_acc, i)) {
    00622         if (!HasBit(old_acc, i) && num_acc < lengthof(accepts)) {
    00623           /* New cargo is accepted */
    00624           accepts[num_acc++] = i;
    00625         }
    00626       } else {
    00627         if (HasBit(old_acc, i) && num_rej < lengthof(rejects)) {
    00628           /* Old cargo is no longer accepted */
    00629           rejects[num_rej++] = i;
    00630         }
    00631       }
    00632     }
    00633
    00634     /* Show news message if there are any changes */
    00635     if (num_acc > 0) ShowRejectOrAcceptNews(st, num_acc, accepts, accept_msg[num_acc - 1]);
    00636     if (num_rej > 0) ShowRejectOrAcceptNews(st, num_rej, rejects, reject_msg[num_rej - 1]);
    00637   }
    00638
    00639   /* redraw the station view since acceptance changed */
    00640   SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_ACCEPTLIST);
    00641 }
    00642
    00643 static void UpdateStationSignCoord(BaseStation *st)
    00644 {
    00645   const StationRect *r = &st->rect;
    00646
    00647   if (r->IsEmpty()) return; // no tiles belong to this station
    00648
    00649   /* clamp sign coord to be inside the station rect */
    00650   st->xy = TileXY(ClampU(TileX(st->xy), r->left, r->right), ClampU(TileY(st->xy), r->top, r->bottom));
    00651   st->UpdateVirtCoord();
    00652 }
    00653
    00660 static void DeleteStationIfEmpty(BaseStation *st)
    00661 {
    00662   if (!st->IsInUse()) {
    00663     st->delete_ctr = 0;
    00664     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    00665   }
    00666   /* station remains but it probably lost some parts - station sign should stay in the station boundaries */
    00667   UpdateStationSignCoord(st);
    00668 }
    00669
    00670 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags);
    00671
    00680 CommandCost CheckBuildableTile(TileIndex tile, uint invalid_dirs, int &allowed_z, bool check_bridge = true)
    00681 {
    00682   if (check_bridge && MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) {
    00683     return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    00684   }
    00685
    00686   CommandCost ret = EnsureNoVehicleOnGround(tile);
    00687   if (ret.Failed()) return ret;
    00688
    00689   uint z;
    00690   Slope tileh = GetTileSlope(tile, &z);
    00691
    00692   /* Prohibit building if
    00693    *   1) The tile is "steep" (i.e. stretches two height levels).
    00694    *   2) The tile is non-flat and the build_on_slopes switch is disabled.
    00695    */
    00696   if (IsSteepSlope(tileh) ||
    00697       ((!_settings_game.construction.build_on_slopes) && tileh != SLOPE_FLAT)) {
    00698     return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00699   }
    00700
    00701   CommandCost cost(EXPENSES_CONSTRUCTION);
    00702   int flat_z = z;
    00703   if (tileh != SLOPE_FLAT) {
    00704     /* Forbid building if the tile faces a slope in a invalid direction. */
    00705     if ((HasBit(invalid_dirs, DIAGDIR_NE) && !(tileh & SLOPE_NE)) ||
    00706         (HasBit(invalid_dirs, DIAGDIR_SE) && !(tileh & SLOPE_SE)) ||
    00707         (HasBit(invalid_dirs, DIAGDIR_SW) && !(tileh & SLOPE_SW)) ||
    00708         (HasBit(invalid_dirs, DIAGDIR_NW) && !(tileh & SLOPE_NW))) {
    00709       return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00710     }
    00711     cost.AddCost(_price[PR_BUILD_FOUNDATION]);
    00712     flat_z += TILE_HEIGHT;
    00713   }
    00714
    00715   /* The level of this tile must be equal to allowed_z. */
    00716   if (allowed_z < 0) {
    00717     /* First tile. */
    00718     allowed_z = flat_z;
    00719   } else if (allowed_z != flat_z) {
    00720     return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00721   }
    00722
    00723   return cost;
    00724 }
    00725
    00732 CommandCost CheckFlatLand(TileArea tile_area, DoCommandFlag flags)
    00733 {
    00734   CommandCost cost(EXPENSES_CONSTRUCTION);
    00735   int allowed_z = -1;
    00736
    00737   TILE_AREA_LOOP(tile_cur, tile_area) {
    00738     CommandCost ret = CheckBuildableTile(tile_cur, 0, allowed_z);
    00739     if (ret.Failed()) return ret;
    00740     cost.AddCost(ret);
    00741
    00742     ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00743     if (ret.Failed()) return ret;
    00744     cost.AddCost(ret);
    00745   }
    00746
    00747   return cost;
    00748 }
    00749
    00760 static CommandCost CheckFlatLandRailStation(TileArea tile_area, DoCommandFlag flags, uint invalid_dirs, StationID *station, RailType rt, SmallVector<Train *, 4> &affected_vehicles)
    00761 {
    00762   CommandCost cost(EXPENSES_CONSTRUCTION);
    00763   int allowed_z = -1;
    00764
    00765   TILE_AREA_LOOP(tile_cur, tile_area) {
    00766     CommandCost ret = CheckBuildableTile(tile_cur, invalid_dirs, allowed_z);
    00767     if (ret.Failed()) return ret;
    00768     cost.AddCost(ret);
    00769
    00770     /* if station is set, then we have special handling to allow building on top of already existing stations.
    00771      * so station points to INVALID_STATION if we can build on any station.
    00772      * Or it points to a station if we're only allowed to build on exactly that station. */
    00773     if (station != NULL && IsTileType(tile_cur, MP_STATION)) {
    00774       if (!IsRailStation(tile_cur)) {
    00775         return ClearTile_Station(tile_cur, DC_AUTO); // get error message
    00776       } else {
    00777         StationID st = GetStationIndex(tile_cur);
    00778         if (*station == INVALID_STATION) {
    00779           *station = st;
    00780         } else if (*station != st) {
    00781           return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00782         }
    00783       }
    00784     } else {
    00785       /* Rail type is only valid when building a railway station; if station to
    00786        * build isn't a rail station it's INVALID_RAILTYPE. */
    00787       if (rt != INVALID_RAILTYPE &&
    00788           IsPlainRailTile(tile_cur) && !HasSignals(tile_cur) &&
    00789           HasPowerOnRail(GetRailType(tile_cur), rt)) {
    00790         /* Allow overbuilding if the tile:
    00791          *  - has rail, but no signals
    00792          *  - it has exactly one track
    00793          *  - the track is in line with the station
    00794          *  - the current rail type has power on the to-be-built type (e.g. convert normal rail to el rail)
    00795          */
    00796         TrackBits tracks = GetTrackBits(tile_cur);
    00797         Track track = RemoveFirstTrack(&tracks);
    00798         Track expected_track = HasBit(invalid_dirs, DIAGDIR_NE) ? TRACK_X : TRACK_Y;
    00799
    00800         if (tracks == TRACK_BIT_NONE && track == expected_track) {
    00801           /* Check for trains having a reservation for this tile. */
    00802           if (HasBit(GetRailReservationTrackBits(tile_cur), track)) {
    00803             Train *v = GetTrainForReservation(tile_cur, track);
    00804             if (v != NULL) {
    00805               *affected_vehicles.Append() = v;
    00806             }
    00807           }
    00808           CommandCost ret = DoCommand(tile_cur, 0, track, flags, CMD_REMOVE_SINGLE_RAIL);
    00809           if (ret.Failed()) return ret;
    00810           cost.AddCost(ret);
    00811           /* With flags & ~DC_EXEC CmdLandscapeClear would fail since the rail still exists */
    00812           continue;
    00813         }
    00814       }
    00815       ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00816       if (ret.Failed()) return ret;
    00817       cost.AddCost(ret);
    00818     }
    00819   }
    00820
    00821   return cost;
    00822 }
    00823
    00836 static CommandCost CheckFlatLandRoadStop(TileArea tile_area, DoCommandFlag flags, uint invalid_dirs, bool is_drive_through, bool is_truck_stop, Axis axis, StationID *station, RoadTypes rts)
    00837 {
    00838   CommandCost cost(EXPENSES_CONSTRUCTION);
    00839   int allowed_z = -1;
    00840
    00841   TILE_AREA_LOOP(cur_tile, tile_area) {
    00842     CommandCost ret = CheckBuildableTile(cur_tile, invalid_dirs, allowed_z);
    00843     if (ret.Failed()) return ret;
    00844     cost.AddCost(ret);
    00845
    00846     /* If station is set, then we have special handling to allow building on top of already existing stations.
    00847      * Station points to INVALID_STATION if we can build on any station.
    00848      * Or it points to a station if we're only allowed to build on exactly that station. */
    00849     if (station != NULL && IsTileType(cur_tile, MP_STATION)) {
    00850       if (!IsRoadStop(cur_tile)) {
    00851         return ClearTile_Station(cur_tile, DC_AUTO); // Get error message.
    00852       } else {
    00853         if (is_truck_stop != IsTruckStop(cur_tile) ||
    00854             is_drive_through != IsDriveThroughStopTile(cur_tile)) {
    00855           return ClearTile_Station(cur_tile, DC_AUTO); // Get error message.
    00856         }
    00857         /* Drive-through station in the wrong direction. */
    00858         if (is_drive_through && IsDriveThroughStopTile(cur_tile) && DiagDirToAxis(GetRoadStopDir(cur_tile)) != axis){
    00859           return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    00860         }
    00861         StationID st = GetStationIndex(cur_tile);
    00862         if (*station == INVALID_STATION) {
    00863           *station = st;
    00864         } else if (*station != st) {
    00865           return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00866         }
    00867       }
    00868     } else {
    00869       bool build_over_road = is_drive_through && IsNormalRoadTile(cur_tile);
    00870       /* Road bits in the wrong direction. */
    00871       RoadBits rb = IsNormalRoadTile(cur_tile) ? GetAllRoadBits(cur_tile) : ROAD_NONE;
    00872       if (build_over_road && (rb & (axis == AXIS_X ? ROAD_Y : ROAD_X)) != 0) {
    00873         /* Someone was pedantic and *NEEDED* three fracking different error messages. */
    00874         switch (CountBits(rb)) {
    00875           case 1:
    00876             return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    00877
    00878           case 2:
    00879             if (rb == ROAD_X || rb == ROAD_Y) return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    00880             return_cmd_error(STR_ERROR_DRIVE_THROUGH_CORNER);
    00881
    00882           default: // 3 or 4
    00883             return_cmd_error(STR_ERROR_DRIVE_THROUGH_JUNCTION);
    00884         }
    00885       }
    00886
    00887       RoadTypes cur_rts = IsNormalRoadTile(cur_tile) ? GetRoadTypes(cur_tile) : ROADTYPES_NONE;
    00888       uint num_roadbits = 0;
    00889       if (build_over_road) {
    00890         /* There is a road, check if we can build road+tram stop over it. */
    00891         if (HasBit(cur_rts, ROADTYPE_ROAD)) {
    00892           Owner road_owner = GetRoadOwner(cur_tile, ROADTYPE_ROAD);
    00893           if (road_owner == OWNER_TOWN) {
    00894             if (!_settings_game.construction.road_stop_on_town_road) return_cmd_error(STR_ERROR_DRIVE_THROUGH_ON_TOWN_ROAD);
    00895           } else if (!_settings_game.construction.road_stop_on_competitor_road && road_owner != OWNER_NONE) {
    00896             CommandCost ret = CheckOwnership(road_owner);
    00897             if (ret.Failed()) return ret;
    00898           }
    00899           num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_ROAD));
    00900         }
    00901
    00902         /* There is a tram, check if we can build road+tram stop over it. */
    00903         if (HasBit(cur_rts, ROADTYPE_TRAM)) {
    00904           Owner tram_owner = GetRoadOwner(cur_tile, ROADTYPE_TRAM);
    00905           if (!_settings_game.construction.road_stop_on_competitor_road && tram_owner != OWNER_NONE) {
    00906             CommandCost ret = CheckOwnership(tram_owner);
    00907             if (ret.Failed()) return ret;
    00908           }
    00909           num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_TRAM));
    00910         }
    00911
    00912         /* Take into account existing roadbits. */
    00913         rts |= cur_rts;
    00914       } else {
    00915         ret = DoCommand(cur_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00916         if (ret.Failed()) return ret;
    00917         cost.AddCost(ret);
    00918       }
    00919
    00920       uint roadbits_to_build = CountBits(rts) * 2 - num_roadbits;
    00921       cost.AddCost(_price[PR_BUILD_ROAD] * roadbits_to_build);
    00922     }
    00923   }
    00924
    00925   return cost;
    00926 }
    00927
    00935 CommandCost CanExpandRailStation(const BaseStation *st, TileArea &new_ta, Axis axis)
    00936 {
    00937   TileArea cur_ta = st->train_station;
    00938
    00939   /* determine new size of train station region.. */
    00940   int x = min(TileX(cur_ta.tile), TileX(new_ta.tile));
    00941   int y = min(TileY(cur_ta.tile), TileY(new_ta.tile));
    00942   new_ta.w = max(TileX(cur_ta.tile) + cur_ta.w, TileX(new_ta.tile) + new_ta.w) - x;
    00943   new_ta.h = max(TileY(cur_ta.tile) + cur_ta.h, TileY(new_ta.tile) + new_ta.h) - y;
    00944   new_ta.tile = TileXY(x, y);
    00945
    00946   /* make sure the final size is not too big. */
    00947   if (new_ta.w > _settings_game.station.station_spread || new_ta.h > _settings_game.station.station_spread) {
    00948     return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
    00949   }
    00950
    00951   return CommandCost();
    00952 }
    00953
    00954 static inline byte *CreateSingle(byte *layout, int n)
    00955 {
    00956   int i = n;
    00957   do *layout++ = 0; while (--i);
    00958   layout[((n - 1) >> 1) - n] = 2;
    00959   return layout;
    00960 }
    00961
    00962 static inline byte *CreateMulti(byte *layout, int n, byte b)
    00963 {
    00964   int i = n;
    00965   do *layout++ = b; while (--i);
    00966   if (n > 4) {
    00967     layout[0 - n] = 0;
    00968     layout[n - 1 - n] = 0;
    00969   }
    00970   return layout;
    00971 }
    00972
    00980 void GetStationLayout(byte *layout, int numtracks, int plat_len, const StationSpec *statspec)
    00981 {
    00982   if (statspec != NULL && statspec->lengths >= plat_len &&
    00983       statspec->platforms[plat_len - 1] >= numtracks &&
    00984       statspec->layouts[plat_len - 1][numtracks - 1]) {
    00985     /* Custom layout defined, follow it. */
    00986     memcpy(layout, statspec->layouts[plat_len - 1][numtracks - 1],
    00987       plat_len * numtracks);
    00988     return;
    00989   }
    00990
    00991   if (plat_len == 1) {
    00992     CreateSingle(layout, numtracks);
    00993   } else {
    00994     if (numtracks & 1) layout = CreateSingle(layout, plat_len);
    00995     numtracks >>= 1;
    00996
    00997     while (--numtracks >= 0) {
    00998       layout = CreateMulti(layout, plat_len, 4);
    00999       layout = CreateMulti(layout, plat_len, 6);
    01000     }
    01001   }
    01002 }
    01003
    01015 template <class T, StringID error_message>
    01016 CommandCost FindJoiningBaseStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, T **st)
    01017 {
    01018   assert(*st == NULL);
    01019   bool check_surrounding = true;
    01020
    01021   if (_settings_game.station.adjacent_stations) {
    01022     if (existing_station != INVALID_STATION) {
    01023       if (adjacent && existing_station != station_to_join) {
    01024         /* You can't build an adjacent station over the top of one that
    01025          * already exists. */
    01026         return_cmd_error(error_message);
    01027       } else {
    01028         /* Extend the current station, and don't check whether it will
    01029          * be near any other stations. */
    01030         *st = T::GetIfValid(existing_station);
    01031         check_surrounding = (*st == NULL);
    01032       }
    01033     } else {
    01034       /* There's no station here. Don't check the tiles surrounding this
    01035        * one if the company wanted to build an adjacent station. */
    01036       if (adjacent) check_surrounding = false;
    01037     }
    01038   }
    01039
    01040   if (check_surrounding) {
    01041     /* Make sure there are no similar stations around us. */
    01042     CommandCost ret = GetStationAround(ta, existing_station, st);
    01043     if (ret.Failed()) return ret;
    01044   }
    01045
    01046   /* Distant join */
    01047   if (*st == NULL && station_to_join != INVALID_STATION) *st = T::GetIfValid(station_to_join);
    01048
    01049   return CommandCost();
    01050 }
    01051
    01061 static CommandCost FindJoiningStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
    01062 {
    01063   return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_RAILWAY_STATION_FIRST>(existing_station, station_to_join, adjacent, ta, st);
    01064 }
    01065
    01075 CommandCost FindJoiningWaypoint(StationID existing_waypoint, StationID waypoint_to_join, bool adjacent, TileArea ta, Waypoint **wp)
    01076 {
    01077   return FindJoiningBaseStation<Waypoint, STR_ERROR_MUST_REMOVE_RAILWAYPOINT_FIRST>(existing_waypoint, waypoint_to_join, adjacent, ta, wp);
    01078 }
    01079
    01097 CommandCost CmdBuildRailStation(TileIndex tile_org, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01098 {
    01099   /* Unpack parameters */
    01100   RailType rt    = Extract<RailType, 0, 4>(p1);
    01101   Axis axis      = Extract<Axis, 4, 1>(p1);
    01102   byte numtracks = GB(p1,  8, 8);
    01103   byte plat_len  = GB(p1, 16, 8);
    01104   bool adjacent  = HasBit(p1, 24);
    01105
    01106   StationClassID spec_class = Extract<StationClassID, 0, 8>(p2);
    01107   byte spec_index           = GB(p2, 8, 8);
    01108   StationID station_to_join = GB(p2, 16, 16);
    01109
    01110   /* Does the authority allow this? */
    01111   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile_org, flags);
    01112   if (ret.Failed()) return ret;
    01113
    01114   if (!ValParamRailtype(rt)) return CMD_ERROR;
    01115
    01116   /* Check if the given station class is valid */
    01117   if ((uint)spec_class >= StationClass::GetCount() || spec_class == STAT_CLASS_WAYP) return CMD_ERROR;
    01118   if (spec_index >= StationClass::GetCount(spec_class)) return CMD_ERROR;
    01119   if (plat_len == 0 || numtracks == 0) return CMD_ERROR;
    01120
    01121   int w_org, h_org;
    01122   if (axis == AXIS_X) {
    01123     w_org = plat_len;
    01124     h_org = numtracks;
    01125   } else {
    01126     h_org = plat_len;
    01127     w_org = numtracks;
    01128   }
    01129
    01130   bool reuse = (station_to_join != NEW_STATION);
    01131   if (!reuse) station_to_join = INVALID_STATION;
    01132   bool distant_join = (station_to_join != INVALID_STATION);
    01133
    01134   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01135
    01136   if (h_org > _settings_game.station.station_spread || w_org > _settings_game.station.station_spread) return CMD_ERROR;
    01137
    01138   /* these values are those that will be stored in train_tile and station_platforms */
    01139   TileArea new_location(tile_org, w_org, h_org);
    01140
    01141   /* Make sure the area below consists of clear tiles. (OR tiles belonging to a certain rail station) */
    01142   StationID est = INVALID_STATION;
    01143   SmallVector<Train *, 4> affected_vehicles;
    01144   /* Clear the land below the station. */
    01145   CommandCost cost = CheckFlatLandRailStation(TileArea(tile_org, w_org, h_org), flags, 5 << axis, &est, rt, affected_vehicles);
    01146   if (cost.Failed()) return cost;
    01147   /* Add construction expenses. */
    01148   cost.AddCost((numtracks * _price[PR_BUILD_STATION_RAIL] + _price[PR_BUILD_STATION_RAIL_LENGTH]) * plat_len);
    01149   cost.AddCost(numtracks * plat_len * RailBuildCost(rt));
    01150
    01151   Station *st = NULL;
    01152   ret = FindJoiningStation(est, station_to_join, adjacent, new_location, &st);
    01153   if (ret.Failed()) return ret;
    01154
    01155   /* See if there is a deleted station close to us. */
    01156   if (st == NULL && reuse) st = GetClosestDeletedStation(tile_org);
    01157
    01158   if (st != NULL) {
    01159     /* Reuse an existing station. */
    01160     if (st->owner != _current_company) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01161
    01162     if (st->train_station.tile != INVALID_TILE) {
    01163       CommandCost ret = CanExpandRailStation(st, new_location, axis);
    01164       if (ret.Failed()) return ret;
    01165     }
    01166
    01167     /* XXX can't we pack this in the "else" part of the if above? */
    01168     CommandCost ret = st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TEST);
    01169     if (ret.Failed()) return ret;
    01170   } else {
    01171     /* allocate and initialize new station */
    01172     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01173
    01174     if (flags & DC_EXEC) {
    01175       st = new Station(tile_org);
    01176
    01177       st->town = ClosestTownFromTile(tile_org, UINT_MAX);
    01178       st->string_id = GenerateStationName(st, tile_org, STATIONNAMING_RAIL);
    01179
    01180       if (Company::IsValidID(_current_company)) {
    01181         SetBit(st->town->have_ratings, _current_company);
    01182       }
    01183     }
    01184   }
    01185
    01186   /* Check if we can allocate a custom stationspec to this station */
    01187   const StationSpec *statspec = StationClass::Get(spec_class, spec_index);
    01188   int specindex = AllocateSpecToStation(statspec, st, (flags & DC_EXEC) != 0);
    01189   if (specindex == -1) return_cmd_error(STR_ERROR_TOO_MANY_STATION_SPECS);
    01190
    01191   if (statspec != NULL) {
    01192     /* Perform NewStation checks */
    01193
    01194     /* Check if the station size is permitted */
    01195     if (HasBit(statspec->disallowed_platforms, numtracks - 1) || HasBit(statspec->disallowed_lengths, plat_len - 1)) {
    01196       return CMD_ERROR;
    01197     }
    01198
    01199     /* Check if the station is buildable */
    01200     if (HasBit(statspec->callback_mask, CBM_STATION_AVAIL) && GB(GetStationCallback(CBID_STATION_AVAILABILITY, 0, 0, statspec, NULL, INVALID_TILE), 0, 8) == 0) {
    01201       return CMD_ERROR;
    01202     }
    01203   }
    01204
    01205   if (flags & DC_EXEC) {
    01206     TileIndexDiff tile_delta;
    01207     byte *layout_ptr;
    01208     byte numtracks_orig;
    01209     Track track;
    01210
    01211     st->train_station = new_location;
    01212     st->AddFacility(FACIL_TRAIN, new_location.tile);
    01213
    01214     st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TRY);
    01215
    01216     if (statspec != NULL) {
    01217       /* Include this station spec's animation trigger bitmask
    01218        * in the station's cached copy. */
    01219       st->cached_anim_triggers |= statspec->animation.triggers;
    01220     }
    01221
    01222     tile_delta = (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
    01223     track = AxisToTrack(axis);
    01224
    01225     layout_ptr = AllocaM(byte, numtracks * plat_len);
    01226     GetStationLayout(layout_ptr, numtracks, plat_len, statspec);
    01227
    01228     numtracks_orig = numtracks;
    01229
    01230     Company *c = Company::Get(st->owner);
    01231
    01232     do {
    01233       TileIndex tile = tile_org;
    01234       int w = plat_len;
    01235       do {
    01236         byte layout = *layout_ptr++;
    01237         if (IsRailStationTile(tile) && HasStationReservation(tile)) {
    01238           /* Check for trains having a reservation for this tile. */
    01239           Train *v = GetTrainForReservation(tile, AxisToTrack(GetRailStationAxis(tile)));
    01240           if (v != NULL) {
    01241             FreeTrainTrackReservation(v);
    01242             *affected_vehicles.Append() = v;
    01243             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01244             for (; v->Next() != NULL; v = v->Next()) { }
    01245             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), false);
    01246           }
    01247         }
    01248
    01249         /* Railtype can change when overbuilding. */
    01250         if (IsRailStationTile(tile)) {
    01251           if (!IsStationTileBlocked(tile)) c->rail_infrastructure[GetRailType(tile)]--;
    01252           c->station_infrastructure--;
    01253         }
    01254
    01255         /* Remove animation if overbuilding */
    01256         DeleteAnimatedTile(tile);
    01257         byte old_specindex = HasStationTileRail(tile) ? GetCustomStationSpecIndex(tile) : 0;
    01258         MakeRailStation(tile, st->owner, st->index, axis, layout & ~1, rt);
    01259         /* Free the spec if we overbuild something */
    01260         DeallocateSpecFromStation(st, old_specindex);
    01261
    01262         SetCustomStationSpecIndex(tile, specindex);
    01263         SetStationTileRandomBits(tile, GB(Random(), 0, 4));
    01264         SetAnimationFrame(tile, 0);
    01265
    01266         if (!IsStationTileBlocked(tile)) c->rail_infrastructure[rt]++;
    01267         c->station_infrastructure++;
    01268
    01269         if (statspec != NULL) {
    01270           /* Use a fixed axis for GetPlatformInfo as our platforms / numtracks are always the right way around */
    01271           uint32 platinfo = GetPlatformInfo(AXIS_X, 0, plat_len, numtracks_orig, plat_len - w, numtracks_orig - numtracks, false);
    01272
    01273           /* As the station is not yet completely finished, the station does not yet exist. */
    01274           uint16 callback = GetStationCallback(CBID_STATION_TILE_LAYOUT, platinfo, 0, statspec, NULL, tile);
    01275           if (callback != CALLBACK_FAILED && callback < 8) SetStationGfx(tile, (callback & ~1) + axis);
    01276
    01277           /* Trigger station animation -- after building? */
    01278           TriggerStationAnimation(st, tile, SAT_BUILT);
    01279         }
    01280
    01281         tile += tile_delta;
    01282       } while (--w);
    01283       AddTrackToSignalBuffer(tile_org, track, _current_company);
    01284       YapfNotifyTrackLayoutChange(tile_org, track);
    01285       tile_org += tile_delta ^ TileDiffXY(1, 1); // perpendicular to tile_delta
    01286     } while (--numtracks);
    01287
    01288     for (uint i = 0; i < affected_vehicles.Length(); ++i) {
    01289       /* Restore reservations of trains. */
    01290       Train *v = affected_vehicles[i];
    01291       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01292       TryPathReserve(v, true, true);
    01293       for (; v->Next() != NULL; v = v->Next()) { }
    01294       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01295     }
    01296
    01297     st->MarkTilesDirty(false);
    01298     st->UpdateVirtCoord();
    01299     UpdateStationAcceptance(st, false);
    01300     st->RecomputeIndustriesNear();
    01301     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01302     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01303     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01304     DirtyCompanyInfrastructureWindows(st->owner);
    01305   }
    01306
    01307   return cost;
    01308 }
    01309
    01310 static void MakeRailStationAreaSmaller(BaseStation *st)
    01311 {
    01312   TileArea ta = st->train_station;
    01313
    01314 restart:
    01315
    01316   /* too small? */
    01317   if (ta.w != 0 && ta.h != 0) {
    01318     /* check the left side, x = constant, y changes */
    01319     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(0, i));) {
    01320       /* the left side is unused? */
    01321       if (++i == ta.h) {
    01322         ta.tile += TileDiffXY(1, 0);
    01323         ta.w--;
    01324         goto restart;
    01325       }
    01326     }
    01327
    01328     /* check the right side, x = constant, y changes */
    01329     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(ta.w - 1, i));) {
    01330       /* the right side is unused? */
    01331       if (++i == ta.h) {
    01332         ta.w--;
    01333         goto restart;
    01334       }
    01335     }
    01336
    01337     /* check the upper side, y = constant, x changes */
    01338     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, 0));) {
    01339       /* the left side is unused? */
    01340       if (++i == ta.w) {
    01341         ta.tile += TileDiffXY(0, 1);
    01342         ta.h--;
    01343         goto restart;
    01344       }
    01345     }
    01346
    01347     /* check the lower side, y = constant, x changes */
    01348     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, ta.h - 1));) {
    01349       /* the left side is unused? */
    01350       if (++i == ta.w) {
    01351         ta.h--;
    01352         goto restart;
    01353       }
    01354     }
    01355   } else {
    01356     ta.Clear();
    01357   }
    01358
    01359   st->train_station = ta;
    01360 }
    01361
    01372 template <class T>
    01373 CommandCost RemoveFromRailBaseStation(TileArea ta, SmallVector<T *, 4> &affected_stations, DoCommandFlag flags, Money removal_cost, bool keep_rail)
    01374 {
    01375   /* Count of the number of tiles removed */
    01376   int quantity = 0;
    01377   CommandCost total_cost(EXPENSES_CONSTRUCTION);
    01378
    01379   /* Do the action for every tile into the area */
    01380   TILE_AREA_LOOP(tile, ta) {
    01381     /* Make sure the specified tile is a rail station */
    01382     if (!HasStationTileRail(tile)) continue;
    01383
    01384     /* If there is a vehicle on ground, do not allow to remove (flood) the tile */
    01385     CommandCost ret = EnsureNoVehicleOnGround(tile);
    01386     if (ret.Failed()) continue;
    01387
    01388     /* Check ownership of station */
    01389     T *st = T::GetByTile(tile);
    01390     if (st == NULL) continue;
    01391
    01392     if (_current_company != OWNER_WATER) {
    01393       CommandCost ret = CheckOwnership(st->owner);
    01394       if (ret.Failed()) continue;
    01395     }
    01396
    01397     /* If we reached here, the tile is valid so increase the quantity of tiles we will remove */
    01398     quantity++;
    01399
    01400     if (keep_rail || IsStationTileBlocked(tile)) {
    01401       /* Don't refund the 'steel' of the track when we keep the
    01402        *  rail, or when the tile didn't have any rail at all. */
    01403       total_cost.AddCost(-_price[PR_CLEAR_RAIL]);
    01404     }
    01405
    01406     if (flags & DC_EXEC) {
    01407       /* read variables before the station tile is removed */
    01408       uint specindex = GetCustomStationSpecIndex(tile);
    01409       Track track = GetRailStationTrack(tile);
    01410       Owner owner = GetTileOwner(tile);
    01411       RailType rt = GetRailType(tile);
    01412       Train *v = NULL;
    01413
    01414       if (HasStationReservation(tile)) {
    01415         v = GetTrainForReservation(tile, track);
    01416         if (v != NULL) {
    01417           /* Free train reservation. */
    01418           FreeTrainTrackReservation(v);
    01419           if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01420           Vehicle *temp = v;
    01421           for (; temp->Next() != NULL; temp = temp->Next()) { }
    01422           if (IsRailStationTile(temp->tile)) SetRailStationPlatformReservation(temp->tile, TrackdirToExitdir(ReverseTrackdir(temp->GetVehicleTrackdir())), false);
    01423         }
    01424       }
    01425
    01426       bool build_rail = keep_rail && !IsStationTileBlocked(tile);
    01427       if (!build_rail && !IsStationTileBlocked(tile)) Company::Get(owner)->rail_infrastructure[rt]--;
    01428
    01429       DoClearSquare(tile);
    01430       DeleteNewGRFInspectWindow(GSF_STATIONS, tile);
    01431       if (build_rail) MakeRailNormal(tile, owner, TrackToTrackBits(track), rt);
    01432       Company::Get(owner)->station_infrastructure--;
    01433       DirtyCompanyInfrastructureWindows(owner);
    01434
    01435       st->rect.AfterRemoveTile(st, tile);
    01436       AddTrackToSignalBuffer(tile, track, owner);
    01437       YapfNotifyTrackLayoutChange(tile, track);
    01438
    01439       DeallocateSpecFromStation(st, specindex);
    01440
    01441       affected_stations.Include(st);
    01442
    01443       if (v != NULL) {
    01444         /* Restore station reservation. */
    01445         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01446         TryPathReserve(v, true, true);
    01447         for (; v->Next() != NULL; v = v->Next()) { }
    01448         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01449       }
    01450     }
    01451   }
    01452
    01453   if (quantity == 0) return_cmd_error(STR_ERROR_THERE_IS_NO_STATION);
    01454
    01455   for (T **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01456     T *st = *stp;
    01457
    01458     /* now we need to make the "spanned" area of the railway station smaller
    01459      * if we deleted something at the edges.
    01460      * we also need to adjust train_tile. */
    01461     MakeRailStationAreaSmaller(st);
    01462     UpdateStationSignCoord(st);
    01463
    01464     /* if we deleted the whole station, delete the train facility. */
    01465     if (st->train_station.tile == INVALID_TILE) {
    01466       st->facilities &= ~FACIL_TRAIN;
    01467       SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01468       st->UpdateVirtCoord();
    01469       DeleteStationIfEmpty(st);
    01470     }
    01471   }
    01472
    01473   total_cost.AddCost(quantity * removal_cost);
    01474   return total_cost;
    01475 }
    01476
    01488 CommandCost CmdRemoveFromRailStation(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01489 {
    01490   TileIndex end = p1 == 0 ? start : p1;
    01491   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01492
    01493   TileArea ta(start, end);
    01494   SmallVector<Station *, 4> affected_stations;
    01495
    01496   CommandCost ret = RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_STATION_RAIL], HasBit(p2, 0));
    01497   if (ret.Failed()) return ret;
    01498
    01499   /* Do all station specific functions here. */
    01500   for (Station **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01501     Station *st = *stp;
    01502
    01503     if (st->train_station.tile == INVALID_TILE) SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01504     st->MarkTilesDirty(false);
    01505     st->RecomputeIndustriesNear();
    01506   }
    01507
    01508   /* Now apply the rail cost to the number that we deleted */
    01509   return ret;
    01510 }
    01511
    01523 CommandCost CmdRemoveFromRailWaypoint(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01524 {
    01525   TileIndex end = p1 == 0 ? start : p1;
    01526   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01527
    01528   TileArea ta(start, end);
    01529   SmallVector<Waypoint *, 4> affected_stations;
    01530
    01531   return RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_WAYPOINT_RAIL], HasBit(p2, 0));
    01532 }
    01533
    01534
    01542 template <class T>
    01543 CommandCost RemoveRailStation(T *st, DoCommandFlag flags)
    01544 {
    01545   /* Current company owns the station? */
    01546   if (_current_company != OWNER_WATER) {
    01547     CommandCost ret = CheckOwnership(st->owner);
    01548     if (ret.Failed()) return ret;
    01549   }
    01550
    01551   /* determine width and height of platforms */
    01552   TileArea ta = st->train_station;
    01553
    01554   assert(ta.w != 0 && ta.h != 0);
    01555
    01556   CommandCost cost(EXPENSES_CONSTRUCTION);
    01557   /* clear all areas of the station */
    01558   TILE_AREA_LOOP(tile, ta) {
    01559     /* only remove tiles that are actually train station tiles */
    01560     if (!st->TileBelongsToRailStation(tile)) continue;
    01561
    01562     CommandCost ret = EnsureNoVehicleOnGround(tile);
    01563     if (ret.Failed()) return ret;
    01564
    01565     cost.AddCost(_price[PR_CLEAR_STATION_RAIL]);
    01566     if (flags & DC_EXEC) {
    01567       /* read variables before the station tile is removed */
    01568       Track track = GetRailStationTrack(tile);
    01569       Owner owner = GetTileOwner(tile); // _current_company can be OWNER_WATER
    01570       Train *v = NULL;
    01571       if (HasStationReservation(tile)) {
    01572         v = GetTrainForReservation(tile, track);
    01573         if (v != NULL) FreeTrainTrackReservation(v);
    01574       }
    01575       if (!IsStationTileBlocked(tile)) Company::Get(owner)->rail_infrastructure[GetRailType(tile)]--;
    01576       Company::Get(owner)->station_infrastructure--;
    01577       DoClearSquare(tile);
    01578       DeleteNewGRFInspectWindow(GSF_STATIONS, tile);
    01579       AddTrackToSignalBuffer(tile, track, owner);
    01580       YapfNotifyTrackLayoutChange(tile, track);
    01581       if (v != NULL) TryPathReserve(v, true);
    01582     }
    01583   }
    01584
    01585   if (flags & DC_EXEC) {
    01586     st->rect.AfterRemoveRect(st, st->train_station);
    01587
    01588     st->train_station.Clear();
    01589
    01590     st->facilities &= ~FACIL_TRAIN;
    01591
    01592     free(st->speclist);
    01593     st->num_specs = 0;
    01594     st->speclist  = NULL;
    01595     st->cached_anim_triggers = 0;
    01596
    01597     DirtyCompanyInfrastructureWindows(st->owner);
    01598     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01599     st->UpdateVirtCoord();
    01600     DeleteStationIfEmpty(st);
    01601   }
    01602
    01603   return cost;
    01604 }
    01605
    01612 static CommandCost RemoveRailStation(TileIndex tile, DoCommandFlag flags)
    01613 {
    01614   /* if there is flooding, remove platforms tile by tile */
    01615   if (_current_company == OWNER_WATER) {
    01616     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_STATION);
    01617   }
    01618
    01619   Station *st = Station::GetByTile(tile);
    01620   CommandCost cost = RemoveRailStation(st, flags);
    01621
    01622   if (flags & DC_EXEC) st->RecomputeIndustriesNear();
    01623
    01624   return cost;
    01625 }
    01626
    01633 static CommandCost RemoveRailWaypoint(TileIndex tile, DoCommandFlag flags)
    01634 {
    01635   /* if there is flooding, remove waypoints tile by tile */
    01636   if (_current_company == OWNER_WATER) {
    01637     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_WAYPOINT);
    01638   }
    01639
    01640   return RemoveRailStation(Waypoint::GetByTile(tile), flags);
    01641 }
    01642
    01643
    01649 static RoadStop **FindRoadStopSpot(bool truck_station, Station *st)
    01650 {
    01651   RoadStop **primary_stop = (truck_station) ? &st->truck_stops : &st->bus_stops;
    01652
    01653   if (*primary_stop == NULL) {
    01654     /* we have no roadstop of the type yet, so write a "primary stop" */
    01655     return primary_stop;
    01656   } else {
    01657     /* there are stops already, so append to the end of the list */
    01658     RoadStop *stop = *primary_stop;
    01659     while (stop->next != NULL) stop = stop->next;
    01660     return &stop->next;
    01661   }
    01662 }
    01663
    01664 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags);
    01665
    01675 static CommandCost FindJoiningRoadStop(StationID existing_stop, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
    01676 {
    01677   return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_ROAD_STOP_FIRST>(existing_stop, station_to_join, adjacent, ta, st);
    01678 }
    01679
    01695 CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01696 {
    01697   bool type = HasBit(p2, 0);
    01698   bool is_drive_through = HasBit(p2, 1);
    01699   RoadTypes rts = Extract<RoadTypes, 2, 2>(p2);
    01700   StationID station_to_join = GB(p2, 16, 16);
    01701   bool reuse = (station_to_join != NEW_STATION);
    01702   if (!reuse) station_to_join = INVALID_STATION;
    01703   bool distant_join = (station_to_join != INVALID_STATION);
    01704
    01705   uint8 width = (uint8)GB(p1, 0, 8);
    01706   uint8 lenght = (uint8)GB(p1, 8, 8);
    01707
    01708   /* Check if the requested road stop is too big */
    01709   if (width > _settings_game.station.station_spread || lenght > _settings_game.station.station_spread) return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
    01710   /* Check for incorrect width / lenght. */
    01711   if (width == 0 || lenght == 0) return CMD_ERROR;
    01712   /* Check if the first tile and the last tile are valid */
    01713   if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, lenght - 1) == INVALID_TILE) return CMD_ERROR;
    01714
    01715   TileArea roadstop_area(tile, width, lenght);
    01716
    01717   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01718
    01719   if (!HasExactlyOneBit(rts) || !HasRoadTypesAvail(_current_company, rts)) return CMD_ERROR;
    01720
    01721   /* Trams only have drive through stops */
    01722   if (!is_drive_through && HasBit(rts, ROADTYPE_TRAM)) return CMD_ERROR;
    01723
    01724   DiagDirection ddir = Extract<DiagDirection, 6, 2>(p2);
    01725
    01726   /* Safeguard the parameters. */
    01727   if (!IsValidDiagDirection(ddir)) return CMD_ERROR;
    01728   /* If it is a drive-through stop, check for valid axis. */
    01729   if (is_drive_through && !IsValidAxis((Axis)ddir)) return CMD_ERROR;
    01730
    01731   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
    01732   if (ret.Failed()) return ret;
    01733
    01734   /* Total road stop cost. */
    01735   CommandCost cost(EXPENSES_CONSTRUCTION, roadstop_area.w * roadstop_area.h * _price[type ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
    01736   StationID est = INVALID_STATION;
    01737   ret = CheckFlatLandRoadStop(roadstop_area, flags, is_drive_through ? 5 << ddir : 1 << ddir, is_drive_through, type, DiagDirToAxis(ddir), &est, rts);
    01738   if (ret.Failed()) return ret;
    01739   cost.AddCost(ret);
    01740
    01741   Station *st = NULL;
    01742   ret = FindJoiningRoadStop(est, station_to_join, HasBit(p2, 5), roadstop_area, &st);
    01743   if (ret.Failed()) return ret;
    01744
    01745   /* Find a deleted station close to us */
    01746   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    01747
    01748   /* Check if this number of road stops can be allocated. */
    01749   if (!RoadStop::CanAllocateItem(roadstop_area.w * roadstop_area.h)) return_cmd_error(type ? STR_ERROR_TOO_MANY_TRUCK_STOPS : STR_ERROR_TOO_MANY_BUS_STOPS);
    01750
    01751   if (st != NULL) {
    01752     if (st->owner != _current_company) {
    01753       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01754     }
    01755
    01756     CommandCost ret = st->rect.BeforeAddRect(roadstop_area.tile, roadstop_area.w, roadstop_area.h, StationRect::ADD_TEST);
    01757     if (ret.Failed()) return ret;
    01758   } else {
    01759     /* allocate and initialize new station */
    01760     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01761
    01762     if (flags & DC_EXEC) {
    01763       st = new Station(tile);
    01764
    01765       st->town = ClosestTownFromTile(tile, UINT_MAX);
    01766       st->string_id = GenerateStationName(st, tile, STATIONNAMING_ROAD);
    01767
    01768       if (Company::IsValidID(_current_company)) {
    01769         SetBit(st->town->have_ratings, _current_company);
    01770       }
    01771     }
    01772   }
    01773
    01774   if (flags & DC_EXEC) {
    01775     /* Check every tile in the area. */
    01776     TILE_AREA_LOOP(cur_tile, roadstop_area) {
    01777       RoadTypes cur_rts = GetRoadTypes(cur_tile);
    01778       Owner road_owner = HasBit(cur_rts, ROADTYPE_ROAD) ? GetRoadOwner(cur_tile, ROADTYPE_ROAD) : _current_company;
    01779       Owner tram_owner = HasBit(cur_rts, ROADTYPE_TRAM) ? GetRoadOwner(cur_tile, ROADTYPE_TRAM) : _current_company;
    01780
    01781       if (IsTileType(cur_tile, MP_STATION) && IsRoadStop(cur_tile)) {
    01782         RemoveRoadStop(cur_tile, flags);
    01783       }
    01784
    01785       RoadStop *road_stop = new RoadStop(cur_tile);
    01786       /* Insert into linked list of RoadStops. */
    01787       RoadStop **currstop = FindRoadStopSpot(type, st);
    01788       *currstop = road_stop;
    01789
    01790       if (type) {
    01791         st->truck_station.Add(cur_tile);
    01792       } else {
    01793         st->bus_station.Add(cur_tile);
    01794       }
    01795
    01796       /* Initialize an empty station. */
    01797       st->AddFacility((type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, cur_tile);
    01798
    01799       st->rect.BeforeAddTile(cur_tile, StationRect::ADD_TRY);
    01800
    01801       RoadStopType rs_type = type ? ROADSTOP_TRUCK : ROADSTOP_BUS;
    01802       if (is_drive_through) {
    01803         /* Update company infrastructure counts. If the current tile is a normal
    01804          * road tile, count only the new road bits needed to get a full diagonal road. */
    01805         RoadType rt;
    01806         FOR_EACH_SET_ROADTYPE(rt, cur_rts | rts) {
    01807           Company *c = Company::GetIfValid(rt == ROADTYPE_ROAD ? road_owner : tram_owner);
    01808           if (c != NULL) {
    01809             c->road_infrastructure[rt] += 2 - (IsNormalRoadTile(cur_tile) && HasBit(cur_rts, rt) ? CountBits(GetRoadBits(cur_tile, rt)) : 0);
    01810             DirtyCompanyInfrastructureWindows(c->index);
    01811           }
    01812         }
    01813
    01814         MakeDriveThroughRoadStop(cur_tile, st->owner, road_owner, tram_owner, st->index, rs_type, rts | cur_rts, DiagDirToAxis(ddir));
    01815         road_stop->MakeDriveThrough();
    01816       } else {
    01817         /* Non-drive-through stop never overbuild and always count as two road bits. */
    01818         Company::Get(st->owner)->road_infrastructure[FIND_FIRST_BIT(rts)] += 2;
    01819         MakeRoadStop(cur_tile, st->owner, st->index, rs_type, rts, ddir);
    01820       }
    01821       Company::Get(st->owner)->station_infrastructure++;
    01822       DirtyCompanyInfrastructureWindows(st->owner);
    01823
    01824       MarkTileDirtyByTile(cur_tile);
    01825     }
    01826   }
    01827
    01828   if (st != NULL) {
    01829     st->UpdateVirtCoord();
    01830     UpdateStationAcceptance(st, false);
    01831     st->RecomputeIndustriesNear();
    01832     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01833     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01834     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_ROADVEHS);
    01835   }
    01836   return cost;
    01837 }
    01838
    01839
    01840 static Vehicle *ClearRoadStopStatusEnum(Vehicle *v, void *)
    01841 {
    01842   if (v->type == VEH_ROAD) {
    01843     /* Okay... we are a road vehicle on a drive through road stop.
    01844      * But that road stop has just been removed, so we need to make
    01845      * sure we are in a valid state... however, vehicles can also
    01846      * turn on road stop tiles, so only clear the 'road stop' state
    01847      * bits and only when the state was 'in road stop', otherwise
    01848      * we'll end up clearing the turn around bits. */
    01849     RoadVehicle *rv = RoadVehicle::From(v);
    01850     if (HasBit(rv->state, RVS_IN_DT_ROAD_STOP)) rv->state &= RVSB_ROAD_STOP_TRACKDIR_MASK;
    01851   }
    01852
    01853   return NULL;
    01854 }
    01855
    01856
    01863 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags)
    01864 {
    01865   Station *st = Station::GetByTile(tile);
    01866
    01867   if (_current_company != OWNER_WATER) {
    01868     CommandCost ret = CheckOwnership(st->owner);
    01869     if (ret.Failed()) return ret;
    01870   }
    01871
    01872   bool is_truck = IsTruckStop(tile);
    01873
    01874   RoadStop **primary_stop;
    01875   RoadStop *cur_stop;
    01876   if (is_truck) { // truck stop
    01877     primary_stop = &st->truck_stops;
    01878     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_TRUCK);
    01879   } else {
    01880     primary_stop = &st->bus_stops;
    01881     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_BUS);
    01882   }
    01883
    01884   assert(cur_stop != NULL);
    01885
    01886   /* don't do the check for drive-through road stops when company bankrupts */
    01887   if (IsDriveThroughStopTile(tile) && (flags & DC_BANKRUPT)) {
    01888     /* remove the 'going through road stop' status from all vehicles on that tile */
    01889     if (flags & DC_EXEC) FindVehicleOnPos(tile, NULL, &ClearRoadStopStatusEnum);
    01890   } else {
    01891     CommandCost ret = EnsureNoVehicleOnGround(tile);
    01892     if (ret.Failed()) return ret;
    01893   }
    01894
    01895   if (flags & DC_EXEC) {
    01896     if (*primary_stop == cur_stop) {
    01897       /* removed the first stop in the list */
    01898       *primary_stop = cur_stop->next;
    01899       /* removed the only stop? */
    01900       if (*primary_stop == NULL) {
    01901         st->facilities &= (is_truck ? ~FACIL_TRUCK_STOP : ~FACIL_BUS_STOP);
    01902       }
    01903     } else {
    01904       /* tell the predecessor in the list to skip this stop */
    01905       RoadStop *pred = *primary_stop;
    01906       while (pred->next != cur_stop) pred = pred->next;
    01907       pred->next = cur_stop->next;
    01908     }
    01909
    01910     /* Update company infrastructure counts. */
    01911     RoadType rt;
    01912     FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(tile)) {
    01913       Company *c = Company::GetIfValid(GetRoadOwner(tile, rt));
    01914       if (c != NULL) {
    01915         c->road_infrastructure[rt] -= 2;
    01916         DirtyCompanyInfrastructureWindows(c->index);
    01917       }
    01918     }
    01919     Company::Get(st->owner)->station_infrastructure--;
    01920
    01921     if (IsDriveThroughStopTile(tile)) {
    01922       /* Clears the tile for us */
    01923       cur_stop->ClearDriveThrough();
    01924     } else {
    01925       DoClearSquare(tile);
    01926     }
    01927
    01928     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_ROADVEHS);
    01929     delete cur_stop;
    01930
    01931     /* Make sure no vehicle is going to the old roadstop */
    01932     RoadVehicle *v;
    01933     FOR_ALL_ROADVEHICLES(v) {
    01934       if (v->First() == v && v->current_order.IsType(OT_GOTO_STATION) &&
    01935           v->dest_tile == tile) {
    01936         v->dest_tile = v->GetOrderStationLocation(st->index);
    01937       }
    01938     }
    01939
    01940     st->rect.AfterRemoveTile(st, tile);
    01941
    01942     st->UpdateVirtCoord();
    01943     st->RecomputeIndustriesNear();
    01944     DeleteStationIfEmpty(st);
    01945
    01946     /* Update the tile area of the truck/bus stop */
    01947     if (is_truck) {
    01948       st->truck_station.Clear();
    01949       for (const RoadStop *rs = st->truck_stops; rs != NULL; rs = rs->next) st->truck_station.Add(rs->xy);
    01950     } else {
    01951       st->bus_station.Clear();
    01952       for (const RoadStop *rs = st->bus_stops; rs != NULL; rs = rs->next) st->bus_station.Add(rs->xy);
    01953     }
    01954   }
    01955
    01956   return CommandCost(EXPENSES_CONSTRUCTION, _price[is_truck ? PR_CLEAR_STATION_TRUCK : PR_CLEAR_STATION_BUS]);
    01957 }
    01958
    01969 CommandCost CmdRemoveRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01970 {
    01971   uint8 width = (uint8)GB(p1, 0, 8);
    01972   uint8 height = (uint8)GB(p1, 8, 8);
    01973
    01974   /* Check for incorrect width / height. */
    01975   if (width == 0 || height == 0) return CMD_ERROR;
    01976   /* Check if the first tile and the last tile are valid */
    01977   if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, height - 1) == INVALID_TILE) return CMD_ERROR;
    01978
    01979   TileArea roadstop_area(tile, width, height);
    01980
    01981   int quantity = 0;
    01982   CommandCost cost(EXPENSES_CONSTRUCTION);
    01983   TILE_AREA_LOOP(cur_tile, roadstop_area) {
    01984     /* Make sure the specified tile is a road stop of the correct type */
    01985     if (!IsTileType(cur_tile, MP_STATION) || !IsRoadStop(cur_tile) || (uint32)GetRoadStopType(cur_tile) != GB(p2, 0, 1)) continue;
    01986
    01987     /* Save the stop info before it is removed */
    01988     bool is_drive_through = IsDriveThroughStopTile(cur_tile);
    01989     RoadTypes rts = GetRoadTypes(cur_tile);
    01990     RoadBits road_bits = IsDriveThroughStopTile(cur_tile) ?
    01991         ((GetRoadStopDir(cur_tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y) :
    01992         DiagDirToRoadBits(GetRoadStopDir(cur_tile));
    01993
    01994     Owner road_owner = GetRoadOwner(cur_tile, ROADTYPE_ROAD);
    01995     Owner tram_owner = GetRoadOwner(cur_tile, ROADTYPE_TRAM);
    01996     CommandCost ret = RemoveRoadStop(cur_tile, flags);
    01997     if (ret.Failed()) return ret;
    01998     cost.AddCost(ret);
    01999
    02000     quantity++;
    02001     /* If the stop was a drive-through stop replace the road */
    02002     if ((flags & DC_EXEC) && is_drive_through) {
    02003       MakeRoadNormal(cur_tile, road_bits, rts, ClosestTownFromTile(cur_tile, UINT_MAX)->index,
    02004           road_owner, tram_owner);
    02005
    02006       /* Update company infrastructure counts. */
    02007       RoadType rt;
    02008       FOR_EACH_SET_ROADTYPE(rt, rts) {
    02009         Company *c = Company::GetIfValid(GetRoadOwner(cur_tile, rt));
    02010         if (c != NULL) {
    02011           c->road_infrastructure[rt] += CountBits(road_bits);
    02012           DirtyCompanyInfrastructureWindows(c->index);
    02013         }
    02014       }
    02015     }
    02016   }
    02017
    02018   if (quantity == 0) return_cmd_error(STR_ERROR_THERE_IS_NO_STATION);
    02019
    02020   return cost;
    02021 }
    02022
    02030 static uint GetMinimalAirportDistanceToTile(const AirportSpec *as, TileIndex town_tile, TileIndex airport_tile)
    02031 {
    02032   uint ttx = TileX(town_tile); // X, Y of town
    02033   uint tty = TileY(town_tile);
    02034
    02035   uint atx = TileX(airport_tile); // X, Y of northern airport corner
    02036   uint aty = TileY(airport_tile);
    02037
    02038   uint btx = TileX(airport_tile) + as->size_x - 1; // X, Y of southern corner
    02039   uint bty = TileY(airport_tile) + as->size_y - 1;
    02040
    02041   /* if ttx < atx, dx = atx - ttx
    02042    * if atx <= ttx <= btx, dx = 0
    02043    * else, dx = ttx - btx (similiar for dy) */
    02044   uint dx = ttx < atx ? atx - ttx : (ttx <= btx ? 0 : ttx - btx);
    02045   uint dy = tty < aty ? aty - tty : (tty <= bty ? 0 : tty - bty);
    02046
    02047   return dx + dy;
    02048 }
    02049
    02059 uint8 GetAirportNoiseLevelForTown(const AirportSpec *as, TileIndex town_tile, TileIndex tile)
    02060 {
    02061   /* 0 cannot be accounted, and 1 is the lowest that can be reduced from town.
    02062    * So no need to go any further*/
    02063   if (as->noise_level < 2) return as->noise_level;
    02064
    02065   uint distance = GetMinimalAirportDistanceToTile(as, town_tile, tile);
    02066
    02067   /* The steps for measuring noise reduction are based on the "magical" (and arbitrary) 8 base distance
    02068    * adding the town_council_tolerance 4 times, as a way to graduate, depending of the tolerance.
    02069    * Basically, it says that the less tolerant a town is, the bigger the distance before
    02070    * an actual decrease can be granted */
    02071   uint8 town_tolerance_distance = 8 + (_settings_game.difficulty.town_council_tolerance * 4);
    02072
    02073   /* now, we want to have the distance segmented using the distance judged bareable by town
    02074    * This will give us the coefficient of reduction the distance provides. */
    02075   uint noise_reduction = distance / town_tolerance_distance;
    02076
    02077   /* If the noise reduction equals the airport noise itself, don't give it for free.
    02078    * Otherwise, simply reduce the airport's level. */
    02079   return noise_reduction >= as->noise_level ? 1 : as->noise_level - noise_reduction;
    02080 }
    02081
    02089 Town *AirportGetNearestTown(const AirportSpec *as, TileIndex airport_tile)
    02090 {
    02091   Town *t, *nearest = NULL;
    02092   uint add = as->size_x + as->size_y - 2; // GetMinimalAirportDistanceToTile can differ from DistanceManhattan by this much
    02093   uint mindist = UINT_MAX - add; // prevent overflow
    02094   FOR_ALL_TOWNS(t) {
    02095     if (DistanceManhattan(t->xy, airport_tile) < mindist + add) { // avoid calling GetMinimalAirportDistanceToTile too often
    02096       uint dist = GetMinimalAirportDistanceToTile(as, t->xy, airport_tile);
    02097       if (dist < mindist) {
    02098         nearest = t;
    02099         mindist = dist;
    02100       }
    02101     }
    02102   }
    02103
    02104   return nearest;
    02105 }
    02106
    02107
    02109 void UpdateAirportsNoise()
    02110 {
    02111   Town *t;
    02112   const Station *st;
    02113
    02114   FOR_ALL_TOWNS(t) t->noise_reached = 0;
    02115
    02116   FOR_ALL_STATIONS(st) {
    02117     if (st->airport.tile != INVALID_TILE) {
    02118       const AirportSpec *as = st->airport.GetSpec();
    02119       Town *nearest = AirportGetNearestTown(as, st->airport.tile);
    02120       nearest->noise_reached += GetAirportNoiseLevelForTown(as, nearest->xy, st->airport.tile);
    02121     }
    02122   }
    02123 }
    02124
    02138 CommandCost CmdBuildAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02139 {
    02140   StationID station_to_join = GB(p2, 16, 16);
    02141   bool reuse = (station_to_join != NEW_STATION);
    02142   if (!reuse) station_to_join = INVALID_STATION;
    02143   bool distant_join = (station_to_join != INVALID_STATION);
    02144   byte airport_type = GB(p1, 0, 8);
    02145   byte layout = GB(p1, 8, 8);
    02146
    02147   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    02148
    02149   if (airport_type >= NUM_AIRPORTS) return CMD_ERROR;
    02150
    02151   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
    02152   if (ret.Failed()) return ret;
    02153
    02154   /* Check if a valid, buildable airport was chosen for construction */
    02155   const AirportSpec *as = AirportSpec::Get(airport_type);
    02156   if (!as->IsAvailable() || layout >= as->num_table) return CMD_ERROR;
    02157
    02158   Direction rotation = as->rotation[layout];
    02159   Town *t = ClosestTownFromTile(tile, UINT_MAX);
    02160   int w = as->size_x;
    02161   int h = as->size_y;
    02162   if (rotation == DIR_E || rotation == DIR_W) Swap(w, h);
    02163
    02164   if (w > _settings_game.station.station_spread || h > _settings_game.station.station_spread) {
    02165     return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
    02166   }
    02167
    02168   CommandCost cost = CheckFlatLand(TileArea(tile, w, h), flags);
    02169   if (cost.Failed()) return cost;
    02170
    02171   /* The noise level is the noise from the airport and reduce it to account for the distance to the town center. */
    02172   Town *nearest = AirportGetNearestTown(as, tile);
    02173   uint newnoise_level = GetAirportNoiseLevelForTown(as, nearest->xy, tile);
    02174
    02175   /* Check if local auth would allow a new airport */
    02176   StringID authority_refuse_message = STR_NULL;
    02177
    02178   if (_settings_game.economy.station_noise_level) {
    02179     /* do not allow to build a new airport if this raise the town noise over the maximum allowed by town */
    02180     if ((nearest->noise_reached + newnoise_level) > nearest->MaxTownNoise()) {
    02181       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_NOISE;
    02182     }
    02183   } else {
    02184     uint num = 0;
    02185     const Station *st;
    02186     FOR_ALL_STATIONS(st) {
    02187       if (st->town == t && (st->facilities & FACIL_AIRPORT) && st->airport.type != AT_OILRIG) num++;
    02188     }
    02189     if (num >= 2) {
    02190       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_AIRPORT;
    02191     }
    02192   }
    02193
    02194   if (authority_refuse_message != STR_NULL) {
    02195     SetDParam(0, t->index);
    02196     return_cmd_error(authority_refuse_message);
    02197   }
    02198
    02199   Station *st = NULL;
    02200   ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 0), TileArea(tile, w, h), &st);
    02201   if (ret.Failed()) return ret;
    02202
    02203   /* Distant join */
    02204   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    02205
    02206   /* Find a deleted station close to us */
    02207   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    02208
    02209   if (st != NULL) {
    02210     if (st->owner != _current_company) {
    02211       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    02212     }
    02213
    02214     CommandCost ret = st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TEST);
    02215     if (ret.Failed()) return ret;
    02216
    02217     if (st->airport.tile != INVALID_TILE) {
    02218       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_AIRPORT);
    02219     }
    02220   } else {
    02221     /* allocate and initialize new station */
    02222     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    02223
    02224     if (flags & DC_EXEC) {
    02225       st = new Station(tile);
    02226
    02227       st->town = t;
    02228       st->string_id = GenerateStationName(st, tile, !(GetAirport(airport_type)->flags & AirportFTAClass::AIRPLANES) ? STATIONNAMING_HELIPORT : STATIONNAMING_AIRPORT);
    02229
    02230       if (Company::IsValidID(_current_company)) {
    02231         SetBit(st->town->have_ratings, _current_company);
    02232       }
    02233     }
    02234   }
    02235
    02236   const AirportTileTable *it = as->table[layout];
    02237   do {
    02238     cost.AddCost(_price[PR_BUILD_STATION_AIRPORT]);
    02239   } while ((++it)->ti.x != -0x80);
    02240
    02241   if (flags & DC_EXEC) {
    02242     /* Always add the noise, so there will be no need to recalculate when option toggles */
    02243     nearest->noise_reached += newnoise_level;
    02244
    02245     st->AddFacility(FACIL_AIRPORT, tile);
    02246     st->airport.type = airport_type;
    02247     st->airport.layout = layout;
    02248     st->airport.flags = 0;
    02249     st->airport.rotation = rotation;
    02250     st->airport.psa.ResetToZero();
    02251
    02252     st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TRY);
    02253
    02254     it = as->table[layout];
    02255     do {
    02256       TileIndex cur_tile = tile + ToTileIndexDiff(it->ti);
    02257       MakeAirport(cur_tile, st->owner, st->index, it->gfx, WATER_CLASS_INVALID);
    02258       SetStationTileRandomBits(cur_tile, GB(Random(), 0, 4));
    02259       st->airport.Add(cur_tile);
    02260
    02261       if (AirportTileSpec::Get(GetTranslatedAirportTileID(it->gfx))->animation.status != ANIM_STATUS_NO_ANIMATION) AddAnimatedTile(cur_tile);
    02262     } while ((++it)->ti.x != -0x80);
    02263
    02264     /* Only call the animation trigger after all tiles have been built */
    02265     it = as->table[layout];
    02266     do {
    02267       TileIndex cur_tile = tile + ToTileIndexDiff(it->ti);
    02268       AirportTileAnimationTrigger(st, cur_tile, AAT_BUILT);
    02269     } while ((++it)->ti.x != -0x80);
    02270
    02271     UpdateAirplanesOnNewStation(st);
    02272
    02273     Company::Get(st->owner)->airport_infrastructure++;
    02274     DirtyCompanyInfrastructureWindows(st->owner);
    02275
    02276     st->UpdateVirtCoord();
    02277     UpdateStationAcceptance(st, false);
    02278     st->RecomputeIndustriesNear();
    02279     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02280     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02281     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_PLANES);
    02282
    02283     if (_settings_game.economy.station_noise_level) {
    02284       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02285     }
    02286   }
    02287
    02288   return cost;
    02289 }
    02290
    02297 static CommandCost RemoveAirport(TileIndex tile, DoCommandFlag flags)
    02298 {
    02299   Station *st = Station::GetByTile(tile);
    02300
    02301   if (_current_company != OWNER_WATER) {
    02302     CommandCost ret = CheckOwnership(st->owner);
    02303     if (ret.Failed()) return ret;
    02304   }
    02305
    02306   tile = st->airport.tile;
    02307
    02308   CommandCost cost(EXPENSES_CONSTRUCTION);
    02309
    02310   const Aircraft *a;
    02311   FOR_ALL_AIRCRAFT(a) {
    02312     if (!a->IsNormalAircraft()) continue;
    02313     if (a->targetairport == st->index && a->state != FLYING) return CMD_ERROR;
    02314   }
    02315
    02316   TILE_AREA_LOOP(tile_cur, st->airport) {
    02317     if (!st->TileBelongsToAirport(tile_cur)) continue;
    02318
    02319     CommandCost ret = EnsureNoVehicleOnGround(tile_cur);
    02320     if (ret.Failed()) return ret;
    02321
    02322     cost.AddCost(_price[PR_CLEAR_STATION_AIRPORT]);
    02323
    02324     if (flags & DC_EXEC) {
    02325       if (IsHangarTile(tile_cur)) OrderBackup::Reset(tile_cur, false);
    02326       DeleteAnimatedTile(tile_cur);
    02327       DoClearSquare(tile_cur);
    02328       DeleteNewGRFInspectWindow(GSF_AIRPORTTILES, tile_cur);
    02329     }
    02330   }
    02331
    02332   if (flags & DC_EXEC) {
    02333     const AirportSpec *as = st->airport.GetSpec();
    02334     for (uint i = 0; i < st->airport.GetNumHangars(); ++i) {
    02335       DeleteWindowById(
    02336         WC_VEHICLE_DEPOT, st->airport.GetHangarTile(i)
    02337       );
    02338     }
    02339
    02340     /* The noise level is the noise from the airport and reduce it to account for the distance to the town center.
    02341      * And as for construction, always remove it, even if the setting is not set, in order to avoid the
    02342      * need of recalculation */
    02343     Town *nearest = AirportGetNearestTown(as, tile);
    02344     nearest->noise_reached -= GetAirportNoiseLevelForTown(as, nearest->xy, tile);
    02345
    02346     st->rect.AfterRemoveRect(st, st->airport);
    02347
    02348     st->airport.Clear();
    02349     st->facilities &= ~FACIL_AIRPORT;
    02350     st->airport.psa.ResetToZero();
    02351
    02352     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_PLANES);
    02353
    02354     if (_settings_game.economy.station_noise_level) {
    02355       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02356     }
    02357
    02358     Company::Get(st->owner)->airport_infrastructure--;
    02359     DirtyCompanyInfrastructureWindows(st->owner);
    02360
    02361     st->UpdateVirtCoord();
    02362     st->RecomputeIndustriesNear();
    02363     DeleteStationIfEmpty(st);
    02364     DeleteNewGRFInspectWindow(GSF_AIRPORTS, st->index);
    02365   }
    02366
    02367   return cost;
    02368 }
    02369
    02376 bool HasStationInUse(StationID station, bool include_company, CompanyID company)
    02377 {
    02378   const Vehicle *v;
    02379   FOR_ALL_VEHICLES(v) {
    02380     if ((v->owner == company) == include_company) {
    02381       const Order *order;
    02382       FOR_VEHICLE_ORDERS(v, order) {
    02383         if ((order->IsType(OT_GOTO_STATION) || order->IsType(OT_GOTO_WAYPOINT)) && order->GetDestination() == station) {
    02384           return true;
    02385         }
    02386       }
    02387     }
    02388   }
    02389   return false;
    02390 }
    02391
    02392 static const TileIndexDiffC _dock_tileoffs_chkaround[] = {
    02393   {-1,  0},
    02394   { 0,  0},
    02395   { 0,  0},
    02396   { 0, -1}
    02397 };
    02398 static const byte _dock_w_chk[4] = { 2, 1, 2, 1 };
    02399 static const byte _dock_h_chk[4] = { 1, 2, 1, 2 };
    02400
    02410 CommandCost CmdBuildDock(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02411 {
    02412   StationID station_to_join = GB(p2, 16, 16);
    02413   bool reuse = (station_to_join != NEW_STATION);
    02414   if (!reuse) station_to_join = INVALID_STATION;
    02415   bool distant_join = (station_to_join != INVALID_STATION);
    02416
    02417   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    02418
    02419   DiagDirection direction = GetInclinedSlopeDirection(GetTileSlope(tile, NULL));
    02420   if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02421   direction = ReverseDiagDir(direction);
    02422
    02423   /* Docks cannot be placed on rapids */
    02424   if (HasTileWaterGround(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02425
    02426   CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
    02427   if (ret.Failed()) return ret;
    02428
    02429   if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02430
    02431   ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    02432   if (ret.Failed()) return ret;
    02433
    02434   TileIndex tile_cur = tile + TileOffsByDiagDir(direction);
    02435
    02436   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur, NULL) != SLOPE_FLAT) {
    02437     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02438   }
    02439
    02440   if (MayHaveBridgeAbove(tile_cur) && IsBridgeAbove(tile_cur)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02441
    02442   /* Get the water class of the water tile before it is cleared.*/
    02443   WaterClass wc = GetWaterClass(tile_cur);
    02444
    02445   ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    02446   if (ret.Failed()) return ret;
    02447
    02448   tile_cur += TileOffsByDiagDir(direction);
    02449   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur, NULL) != SLOPE_FLAT) {
    02450     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02451   }
    02452
    02453   /* middle */
    02454   Station *st = NULL;
    02455   ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p1, 0),
    02456       TileArea(tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02457           _dock_w_chk[direction], _dock_h_chk[direction]), &st);
    02458   if (ret.Failed()) return ret;
    02459
    02460   /* Distant join */
    02461   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    02462
    02463   /* Find a deleted station close to us */
    02464   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    02465
    02466   if (st != NULL) {
    02467     if (st->owner != _current_company) {
    02468       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    02469     }
    02470
    02471     CommandCost ret = st->rect.BeforeAddRect(
    02472         tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02473         _dock_w_chk[direction], _dock_h_chk[direction], StationRect::ADD_TEST);
    02474     if (ret.Failed()) return ret;
    02475
    02476     if (st->dock_tile != INVALID_TILE) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_DOCK);
    02477   } else {
    02478     /* allocate and initialize new station */
    02479     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    02480
    02481     if (flags & DC_EXEC) {
    02482       st = new Station(tile);
    02483
    02484       st->town = ClosestTownFromTile(tile, UINT_MAX);
    02485       st->string_id = GenerateStationName(st, tile, STATIONNAMING_DOCK);
    02486
    02487       if (Company::IsValidID(_current_company)) {
    02488         SetBit(st->town->have_ratings, _current_company);
    02489       }
    02490     }
    02491   }
    02492
    02493   if (flags & DC_EXEC) {
    02494     st->dock_tile = tile;
    02495     st->AddFacility(FACIL_DOCK, tile);
    02496
    02497     st->rect.BeforeAddRect(
    02498         tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02499         _dock_w_chk[direction], _dock_h_chk[direction], StationRect::ADD_TRY);
    02500
    02501     /* If the water part of the dock is on a canal, update infrastructure counts.
    02502      * This is needed as we've unconditionally cleared that tile before. */
    02503     if (wc == WATER_CLASS_CANAL) {
    02504       Company::Get(st->owner)->water_infrastructure++;
    02505     }
    02506     Company::Get(st->owner)->station_infrastructure += 2;
    02507     DirtyCompanyInfrastructureWindows(st->owner);
    02508
    02509     MakeDock(tile, st->owner, st->index, direction, wc);
    02510
    02511     st->UpdateVirtCoord();
    02512     UpdateStationAcceptance(st, false);
    02513     st->RecomputeIndustriesNear();
    02514     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02515     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02516     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_SHIPS);
    02517   }
    02518
    02519   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_STATION_DOCK]);
    02520 }
    02521
    02528 static CommandCost RemoveDock(TileIndex tile, DoCommandFlag flags)
    02529 {
    02530   Station *st = Station::GetByTile(tile);
    02531   CommandCost ret = CheckOwnership(st->owner);
    02532   if (ret.Failed()) return ret;
    02533
    02534   TileIndex tile1 = st->dock_tile;
    02535   TileIndex tile2 = tile1 + TileOffsByDiagDir(GetDockDirection(tile1));
    02536
    02537   ret = EnsureNoVehicleOnGround(tile1);
    02538   if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile2);
    02539   if (ret.Failed()) return ret;
    02540
    02541   if (flags & DC_EXEC) {
    02542     DoClearSquare(tile1);
    02543     MarkTileDirtyByTile(tile1);
    02544     MakeWaterKeepingClass(tile2, st->owner);
    02545
    02546     st->rect.AfterRemoveTile(st, tile1);
    02547     st->rect.AfterRemoveTile(st, tile2);
    02548
    02549     st->dock_tile = INVALID_TILE;
    02550     st->facilities &= ~FACIL_DOCK;
    02551
    02552     Company::Get(st->owner)->station_infrastructure -= 2;
    02553     DirtyCompanyInfrastructureWindows(st->owner);
    02554
    02555     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_SHIPS);
    02556     st->UpdateVirtCoord();
    02557     st->RecomputeIndustriesNear();
    02558     DeleteStationIfEmpty(st);
    02559   }
    02560
    02561   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_STATION_DOCK]);
    02562 }
    02563
    02564 #include "table/station_land.h"
    02565
    02566 const DrawTileSprites *GetStationTileLayout(StationType st, byte gfx)
    02567 {
    02568   return &_station_display_datas[st][gfx];
    02569 }
    02570
    02571 static void DrawTile_Station(TileInfo *ti)
    02572 {
    02573   const NewGRFSpriteLayout *layout = NULL;
    02574   DrawTileSprites tmp_rail_layout;
    02575   const DrawTileSprites *t = NULL;
    02576   RoadTypes roadtypes;
    02577   int32 total_offset;
    02578   const RailtypeInfo *rti = NULL;
    02579   uint32 relocation = 0;
    02580   uint32 ground_relocation = 0;
    02581   const BaseStation *st = NULL;
    02582   const StationSpec *statspec = NULL;
    02583   uint tile_layout = 0;
    02584
    02585   if (HasStationRail(ti->tile)) {
    02586     rti = GetRailTypeInfo(GetRailType(ti->tile));
    02587     roadtypes = ROADTYPES_NONE;
    02588     total_offset = rti->GetRailtypeSpriteOffset();
    02589
    02590     if (IsCustomStationSpecIndex(ti->tile)) {
    02591       /* look for customization */
    02592       st = BaseStation::GetByTile(ti->tile);
    02593       statspec = st->speclist[GetCustomStationSpecIndex(ti->tile)].spec;
    02594
    02595       if (statspec != NULL) {
    02596         tile_layout = GetStationGfx(ti->tile);
    02597
    02598         if (HasBit(statspec->callback_mask, CBM_STATION_SPRITE_LAYOUT)) {
    02599           uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0, 0, statspec, st, ti->tile);
    02600           if (callback != CALLBACK_FAILED) tile_layout = (callback & ~1) + GetRailStationAxis(ti->tile);
    02601         }
    02602
    02603         /* Ensure the chosen tile layout is valid for this custom station */
    02604         if (statspec->renderdata != NULL) {
    02605           layout = &statspec->renderdata[tile_layout < statspec->tiles ? tile_layout : (uint)GetRailStationAxis(ti->tile)];
    02606           if (!layout->NeedsPreprocessing()) {
    02607             t = layout;
    02608             layout = NULL;
    02609           }
    02610         }
    02611       }
    02612     }
    02613   } else {
    02614     roadtypes = IsRoadStop(ti->tile) ? GetRoadTypes(ti->tile) : ROADTYPES_NONE;
    02615     total_offset = 0;
    02616   }
    02617
    02618   if (IsAirport(ti->tile)) {
    02619     StationGfx gfx = GetAirportGfx(ti->tile);
    02620     if (gfx >= NEW_AIRPORTTILE_OFFSET) {
    02621       const AirportTileSpec *ats = AirportTileSpec::Get(gfx);
    02622       if (ats->grf_prop.spritegroup[0] != NULL && DrawNewAirportTile(ti, Station::GetByTile(ti->tile), gfx, ats)) {
    02623         return;
    02624       }
    02625       /* No sprite group (or no valid one) found, meaning no graphics associated.
    02626        * Use the substitute one instead */
    02627       assert(ats->grf_prop.subst_id != INVALID_AIRPORTTILE);
    02628       gfx = ats->grf_prop.subst_id;
    02629     }
    02630     switch (gfx) {
    02631       case APT_RADAR_GRASS_FENCE_SW:
    02632         t = &_station_display_datas_airport_radar_grass_fence_sw[GetAnimationFrame(ti->tile)];
    02633         break;
    02634       case APT_GRASS_FENCE_NE_FLAG:
    02635         t = &_station_display_datas_airport_flag_grass_fence_ne[GetAnimationFrame(ti->tile)];
    02636         break;
    02637       case APT_RADAR_FENCE_SW:
    02638         t = &_station_display_datas_airport_radar_fence_sw[GetAnimationFrame(ti->tile)];
    02639         break;
    02640       case APT_RADAR_FENCE_NE:
    02641         t = &_station_display_datas_airport_radar_fence_ne[GetAnimationFrame(ti->tile)];
    02642         break;
    02643       case APT_GRASS_FENCE_NE_FLAG_2:
    02644         t = &_station_display_datas_airport_flag_grass_fence_ne_2[GetAnimationFrame(ti->tile)];
    02645         break;
    02646     }
    02647   }
    02648
    02649   Owner owner = GetTileOwner(ti->tile);
    02650
    02651   PaletteID palette;
    02652   if (Company::IsValidID(owner)) {
    02653     palette = COMPANY_SPRITE_COLOUR(owner);
    02654   } else {
    02655     /* Some stations are not owner by a company, namely oil rigs */
    02656     palette = PALETTE_TO_GREY;
    02657   }
    02658
    02659   if (layout == NULL && (t == NULL || t->seq == NULL)) t = GetStationTileLayout(GetStationType(ti->tile), GetStationGfx(ti->tile));
    02660
    02661   /* don't show foundation for docks */
    02662   if (ti->tileh != SLOPE_FLAT && !IsDock(ti->tile)) {
    02663     if (statspec != NULL && HasBit(statspec->flags, SSF_CUSTOM_FOUNDATIONS)) {
    02664       /* Station has custom foundations.
    02665        * Check whether the foundation continues beyond the tile's upper sides. */
    02666       uint edge_info = 0;
    02667       uint z;
    02668       Slope slope = GetFoundationSlope(ti->tile, &z);
    02669       if (!HasFoundationNW(ti->tile, slope, z)) SetBit(edge_info, 0);
    02670       if (!HasFoundationNE(ti->tile, slope, z)) SetBit(edge_info, 1);
    02671       SpriteID image = GetCustomStationFoundationRelocation(statspec, st, ti->tile, tile_layout, edge_info);
    02672
    02673       if (HasBit(statspec->flags, SSF_EXTENDED_FOUNDATIONS)) {
    02674         /* Station provides extended foundations. */
    02675
    02676         static const uint8 foundation_parts[] = {
    02677           0, 0, 0, 0, // Invalid,  Invalid,   Invalid,   SLOPE_SW
    02678           0, 1, 2, 3, // Invalid,  SLOPE_EW,  SLOPE_SE,  SLOPE_WSE
    02679           0, 4, 5, 6, // Invalid,  SLOPE_NW,  SLOPE_NS,  SLOPE_NWS
    02680           7, 8, 9     // SLOPE_NE, SLOPE_ENW, SLOPE_SEN
    02681         };
    02682
    02683         AddSortableSpriteToDraw(image + foundation_parts[ti->tileh], PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02684       } else {
    02685         /* Draw simple foundations, built up from 8 possible foundation sprites. */
    02686
    02687         /* Each set bit represents one of the eight composite sprites to be drawn.
    02688          * 'Invalid' entries will not drawn but are included for completeness. */
    02689         static const uint8 composite_foundation_parts[] = {
    02690           /* Invalid  (00000000), Invalid   (11010001), Invalid   (11100100), SLOPE_SW  (11100000) */
    02691              0x00,                0xD1,                 0xE4,                 0xE0,
    02692           /* Invalid  (11001010), SLOPE_EW  (11001001), SLOPE_SE  (11000100), SLOPE_WSE (11000000) */
    02693              0xCA,                0xC9,                 0xC4,                 0xC0,
    02694           /* Invalid  (11010010), SLOPE_NW  (10010001), SLOPE_NS  (11100100), SLOPE_NWS (10100000) */
    02695              0xD2,                0x91,                 0xE4,                 0xA0,
    02696           /* SLOPE_NE (01001010), SLOPE_ENW (00001001), SLOPE_SEN (01000100) */
    02697              0x4A,                0x09,                 0x44
    02698         };
    02699
    02700         uint8 parts = composite_foundation_parts[ti->tileh];
    02701
    02702         /* If foundations continue beyond the tile's upper sides then
    02703          * mask out the last two pieces. */
    02704         if (HasBit(edge_info, 0)) ClrBit(parts, 6);
    02705         if (HasBit(edge_info, 1)) ClrBit(parts, 7);
    02706
    02707         if (parts == 0) {
    02708           /* We always have to draw at least one sprite to make sure there is a boundingbox and a sprite with the
    02709            * correct offset for the childsprites.
    02710            * So, draw the (completely empty) sprite of the default foundations. */
    02711           goto draw_default_foundation;
    02712         }
    02713
    02714         StartSpriteCombine();
    02715         for (int i = 0; i < 8; i++) {
    02716           if (HasBit(parts, i)) {
    02717             AddSortableSpriteToDraw(image + i, PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
    02718           }
    02719         }
    02720         EndSpriteCombine();
    02721       }
    02722
    02723       OffsetGroundSprite(31, 1);
    02724       ti->z += ApplyFoundationToSlope(FOUNDATION_LEVELED, &ti->tileh);
    02725     } else {
    02726 draw_default_foundation:
    02727       DrawFoundation(ti, FOUNDATION_LEVELED);
    02728     }
    02729   }
    02730
    02731   if (IsBuoy(ti->tile) || IsDock(ti->tile) || (IsOilRig(ti->tile) && IsTileOnWater(ti->tile))) {
    02732     if (ti->tileh == SLOPE_FLAT) {
    02733       DrawWaterClassGround(ti);
    02734     } else {
    02735       assert(IsDock(ti->tile));
    02736       TileIndex water_tile = ti->tile + TileOffsByDiagDir(GetDockDirection(ti->tile));
    02737       WaterClass wc = GetWaterClass(water_tile);
    02738       if (wc == WATER_CLASS_SEA) {
    02739         DrawShoreTile(ti->tileh);
    02740       } else {
    02741         DrawClearLandTile(ti, 3);
    02742       }
    02743     }
    02744   } else {
    02745     if (layout != NULL) {
    02746       /* Sprite layout which needs preprocessing */
    02747       bool separate_ground = HasBit(statspec->flags, SSF_SEPARATE_GROUND);
    02748       uint32 var10_values = layout->PrepareLayout(total_offset, rti->fallback_railtype, 0, separate_ground);
    02749       uint8 var10;
    02750       FOR_EACH_SET_BIT(var10, var10_values) {
    02751         uint32 var10_relocation = GetCustomStationRelocation(statspec, st, ti->tile, var10);
    02752         layout->ProcessRegisters(var10, var10_relocation, separate_ground);
    02753       }
    02754       tmp_rail_layout.seq = layout->GetLayout(&tmp_rail_layout.ground);
    02755       t = &tmp_rail_layout;
    02756       total_offset = 0;
    02757     } else if (statspec != NULL) {
    02758       /* Simple sprite layout */
    02759       ground_relocation = relocation = GetCustomStationRelocation(statspec, st, ti->tile, 0);
    02760       if (HasBit(statspec->flags, SSF_SEPARATE_GROUND)) {
    02761         ground_relocation = GetCustomStationRelocation(statspec, st, ti->tile, 1);
    02762       }
    02763       ground_relocation += rti->fallback_railtype;
    02764     }
    02765
    02766     SpriteID image = t->ground.sprite;
    02767     PaletteID pal  = t->ground.pal;
    02768     if (rti != NULL && rti->UsesOverlay() && (image == SPR_RAIL_TRACK_X || image == SPR_RAIL_TRACK_Y)) {
    02769       SpriteID ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND);
    02770       DrawGroundSprite(SPR_FLAT_GRASS_TILE, PAL_NONE);
    02771       DrawGroundSprite(ground + (image == SPR_RAIL_TRACK_X ? RTO_X : RTO_Y), PAL_NONE);
    02772
    02773       if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationReservation(ti->tile)) {
    02774         SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
    02775         DrawGroundSprite(overlay + (image == SPR_RAIL_TRACK_X ? RTO_X : RTO_Y), PALETTE_CRASH);
    02776       }
    02777     } else {
    02778       image += HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? ground_relocation : total_offset;
    02779       if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += ground_relocation;
    02780       DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, palette));
    02781
    02782       /* PBS debugging, draw reserved tracks darker */
    02783       if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationRail(ti->tile) && HasStationReservation(ti->tile)) {
    02784         const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
    02785         DrawGroundSprite(GetRailStationAxis(ti->tile) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
    02786       }
    02787     }
    02788   }
    02789
    02790   if (HasStationRail(ti->tile) && HasCatenaryDrawn(GetRailType(ti->tile)) && IsStationTileElectrifiable(ti->tile)) DrawCatenary(ti);
    02791
    02792   if (HasBit(roadtypes, ROADTYPE_TRAM)) {
    02793     Axis axis = GetRoadStopDir(ti->tile) == DIAGDIR_NE ? AXIS_X : AXIS_Y;
    02794     DrawGroundSprite((HasBit(roadtypes, ROADTYPE_ROAD) ? SPR_TRAMWAY_OVERLAY : SPR_TRAMWAY_TRAM) + (axis ^ 1), PAL_NONE);
    02795     DrawTramCatenary(ti, axis == AXIS_X ? ROAD_X : ROAD_Y);
    02796   }
    02797
    02798   if (IsRailWaypoint(ti->tile)) {
    02799     /* Don't offset the waypoint graphics; they're always the same. */
    02800     total_offset = 0;
    02801   }
    02802
    02803   DrawRailTileSeq(ti, t, TO_BUILDINGS, total_offset, relocation, palette);
    02804 }
    02805
    02806 void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, RoadType roadtype, int image)
    02807 {
    02808   int32 total_offset = 0;
    02809   PaletteID pal = COMPANY_SPRITE_COLOUR(_local_company);
    02810   const DrawTileSprites *t = GetStationTileLayout(st, image);
    02811   const RailtypeInfo *rti = NULL;
    02812
    02813   if (railtype != INVALID_RAILTYPE) {
    02814     rti = GetRailTypeInfo(railtype);
    02815     total_offset = rti->GetRailtypeSpriteOffset();
    02816   }
    02817
    02818   SpriteID img = t->ground.sprite;
    02819   if ((img == SPR_RAIL_TRACK_X || img == SPR_RAIL_TRACK_Y) && rti->UsesOverlay()) {
    02820     SpriteID ground = GetCustomRailSprite(rti, INVALID_TILE, RTSG_GROUND);
    02821     DrawSprite(SPR_FLAT_GRASS_TILE, PAL_NONE, x, y);
    02822     DrawSprite(ground + (img == SPR_RAIL_TRACK_X ? RTO_X : RTO_Y), PAL_NONE, x, y);
    02823   } else {
    02824     DrawSprite(img + total_offset, HasBit(img, PALETTE_MODIFIER_COLOUR) ? pal : PAL_NONE, x, y);
    02825   }
    02826
    02827   if (roadtype == ROADTYPE_TRAM) {
    02828     DrawSprite(SPR_TRAMWAY_TRAM + (t->ground.sprite == SPR_ROAD_PAVED_STRAIGHT_X ? 1 : 0), PAL_NONE, x, y);
    02829   }
    02830
    02831   /* Default waypoint has no railtype specific sprites */
    02832   DrawRailTileSeqInGUI(x, y, t, st == STATION_WAYPOINT ? 0 : total_offset, 0, pal);
    02833 }
    02834
    02835 static uint GetSlopeZ_Station(TileIndex tile, uint x, uint y)
    02836 {
    02837   return GetTileMaxZ(tile);
    02838 }
    02839
    02840 static Foundation GetFoundation_Station(TileIndex tile, Slope tileh)
    02841 {
    02842   return FlatteningFoundation(tileh);
    02843 }
    02844
    02845 static void GetTileDesc_Station(TileIndex tile, TileDesc *td)
    02846 {
    02847   td->owner[0] = GetTileOwner(tile);
    02848   if (IsDriveThroughStopTile(tile)) {
    02849     Owner road_owner = INVALID_OWNER;
    02850     Owner tram_owner = INVALID_OWNER;
    02851     RoadTypes rts = GetRoadTypes(tile);
    02852     if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    02853     if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    02854
    02855     /* Is there a mix of owners? */
    02856     if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
    02857         (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
    02858       uint i = 1;
    02859       if (road_owner != INVALID_OWNER) {
    02860         td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
    02861         td->owner[i] = road_owner;
    02862         i++;
    02863       }
    02864       if (tram_owner != INVALID_OWNER) {
    02865         td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
    02866         td->owner[i] = tram_owner;
    02867       }
    02868     }
    02869   }
    02870   td->build_date = BaseStation::GetByTile(tile)->build_date;
    02871
    02872   if (HasStationTileRail(tile)) {
    02873     const StationSpec *spec = GetStationSpec(tile);
    02874
    02875     if (spec != NULL) {
    02876       td->station_class = StationClass::GetName(spec->cls_id);
    02877       td->station_name  = spec->name;
    02878
    02879       if (spec->grf_prop.grffile != NULL) {
    02880         const GRFConfig *gc = GetGRFConfig(spec->grf_prop.grffile->grfid);
    02881         td->grf = gc->GetName();
    02882       }
    02883     }
    02884
    02885     const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
    02886     td->rail_speed = rti->max_speed;
    02887   }
    02888
    02889   if (IsAirport(tile)) {
    02890     const AirportSpec *as = Station::GetByTile(tile)->airport.GetSpec();
    02891     td->airport_class = AirportClass::GetName(as->cls_id);
    02892     td->airport_name = as->name;
    02893
    02894     const AirportTileSpec *ats = AirportTileSpec::GetByTile(tile);
    02895     td->airport_tile_name = ats->name;
    02896
    02897     if (as->grf_prop.grffile != NULL) {
    02898       const GRFConfig *gc = GetGRFConfig(as->grf_prop.grffile->grfid);
    02899       td->grf = gc->GetName();
    02900     } else if (ats->grf_prop.grffile != NULL) {
    02901       const GRFConfig *gc = GetGRFConfig(ats->grf_prop.grffile->grfid);
    02902       td->grf = gc->GetName();
    02903     }
    02904   }
    02905
    02906   StringID str;
    02907   switch (GetStationType(tile)) {
    02908     default: NOT_REACHED();
    02909     case STATION_RAIL:     str = STR_LAI_STATION_DESCRIPTION_RAILROAD_STATION; break;
    02910     case STATION_AIRPORT:
    02911       str = (IsHangar(tile) ? STR_LAI_STATION_DESCRIPTION_AIRCRAFT_HANGAR : STR_LAI_STATION_DESCRIPTION_AIRPORT);
    02912       break;
    02913     case STATION_TRUCK:    str = STR_LAI_STATION_DESCRIPTION_TRUCK_LOADING_AREA; break;
    02914     case STATION_BUS:      str = STR_LAI_STATION_DESCRIPTION_BUS_STATION; break;
    02915     case STATION_OILRIG:   str = STR_INDUSTRY_NAME_OIL_RIG; break;
    02916     case STATION_DOCK:     str = STR_LAI_STATION_DESCRIPTION_SHIP_DOCK; break;
    02917     case STATION_BUOY:     str = STR_LAI_STATION_DESCRIPTION_BUOY; break;
    02918     case STATION_WAYPOINT: str = STR_LAI_STATION_DESCRIPTION_WAYPOINT; break;
    02919   }
    02920   td->str = str;
    02921 }
    02922
    02923
    02924 static TrackStatus GetTileTrackStatus_Station(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
    02925 {
    02926   TrackBits trackbits = TRACK_BIT_NONE;
    02927
    02928   switch (mode) {
    02929     case TRANSPORT_RAIL:
    02930       if (HasStationRail(tile) && !IsStationTileBlocked(tile)) {
    02931         trackbits = TrackToTrackBits(GetRailStationTrack(tile));
    02932       }
    02933       break;
    02934
    02935     case TRANSPORT_WATER:
    02936       /* buoy is coded as a station, it is always on open water */
    02937       if (IsBuoy(tile)) {
    02938         trackbits = TRACK_BIT_ALL;
    02939         /* remove tracks that connect NE map edge */
    02940         if (TileX(tile) == 0) trackbits &= ~(TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_RIGHT);
    02941         /* remove tracks that connect NW map edge */
    02942         if (TileY(tile) == 0) trackbits &= ~(TRACK_BIT_Y | TRACK_BIT_LEFT | TRACK_BIT_UPPER);
    02943       }
    02944       break;
    02945
    02946     case TRANSPORT_ROAD:
    02947       if ((GetRoadTypes(tile) & sub_mode) != 0 && IsRoadStop(tile)) {
    02948         DiagDirection dir = GetRoadStopDir(tile);
    02949         Axis axis = DiagDirToAxis(dir);
    02950
    02951         if (side != INVALID_DIAGDIR) {
    02952           if (axis != DiagDirToAxis(side) || (IsStandardRoadStopTile(tile) && dir != side)) break;
    02953         }
    02954
    02955         trackbits = AxisToTrackBits(axis);
    02956       }
    02957       break;
    02958
    02959     default:
    02960       break;
    02961   }
    02962
    02963   return CombineTrackStatus(TrackBitsToTrackdirBits(trackbits), TRACKDIR_BIT_NONE);
    02964 }
    02965
    02966
    02967 static void TileLoop_Station(TileIndex tile)
    02968 {
    02969   /* FIXME -- GetTileTrackStatus_Station -> animated stationtiles
    02970    * hardcoded.....not good */
    02971   switch (GetStationType(tile)) {
    02972     case STATION_AIRPORT:
    02973       AirportTileAnimationTrigger(Station::GetByTile(tile), tile, AAT_TILELOOP);
    02974       break;
    02975
    02976     case STATION_DOCK:
    02977       if (GetTileSlope(tile, NULL) != SLOPE_FLAT) break; // only handle water part
    02978       /* FALL THROUGH */
    02979     case STATION_OILRIG: //(station part)
    02980     case STATION_BUOY:
    02981       TileLoop_Water(tile);
    02982       break;
    02983
    02984     default: break;
    02985   }
    02986 }
    02987
    02988
    02989 static void AnimateTile_Station(TileIndex tile)
    02990 {
    02991   if (HasStationRail(tile)) {
    02992     AnimateStationTile(tile);
    02993     return;
    02994   }
    02995
    02996   if (IsAirport(tile)) {
    02997     AnimateAirportTile(tile);
    02998   }
    02999 }
    03000
    03001
    03002 static bool ClickTile_Station(TileIndex tile)
    03003 {
    03004   const BaseStation *bst = BaseStation::GetByTile(tile);
    03005
    03006   if (bst->facilities & FACIL_WAYPOINT) {
    03007     ShowWaypointWindow(Waypoint::From(bst));
    03008   } else if (IsHangar(tile)) {
    03009     const Station *st = Station::From(bst);
    03010     ShowDepotWindow(st->airport.GetHangarTile(st->airport.GetHangarNum(tile)), VEH_AIRCRAFT);
    03011   } else {
    03012     ShowStationViewWindow(bst->index);
    03013   }
    03014   return true;
    03015 }
    03016
    03017 static VehicleEnterTileStatus VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
    03018 {
    03019   if (v->type == VEH_TRAIN) {
    03020     StationID station_id = GetStationIndex(tile);
    03021     if (!v->current_order.ShouldStopAtStation(v, station_id)) return VETSB_CONTINUE;
    03022     if (!IsRailStation(tile) || !v->IsFrontEngine()) return VETSB_CONTINUE;
    03023
    03024     int station_ahead;
    03025     int station_length;
    03026     int stop = GetTrainStopLocation(station_id, tile, Train::From(v), &station_ahead, &station_length);
    03027
    03028     /* Stop whenever that amount of station ahead + the distance from the
    03029      * begin of the platform to the stop location is longer than the length
    03030      * of the platform. Station ahead 'includes' the current tile where the
    03031      * vehicle is on, so we need to substract that. */
    03032     if (!IsInsideBS(stop + station_ahead, station_length, TILE_SIZE)) return VETSB_CONTINUE;
    03033
    03034     DiagDirection dir = DirToDiagDir(v->direction);
    03035
    03036     x &= 0xF;
    03037     y &= 0xF;
    03038
    03039     if (DiagDirToAxis(dir) != AXIS_X) Swap(x, y);
    03040     if (y == TILE_SIZE / 2) {
    03041       if (dir != DIAGDIR_SE && dir != DIAGDIR_SW) x = TILE_SIZE - 1 - x;
    03042       stop &= TILE_SIZE - 1;
    03043
    03044       if (x == stop) return VETSB_ENTERED_STATION | (VehicleEnterTileStatus)(station_id << VETS_STATION_ID_OFFSET); // enter station
    03045       if (x < stop) {
    03046         uint16 spd;
    03047
    03048         v->vehstatus |= VS_TRAIN_SLOWING;
    03049         spd = max(0, (stop - x) * 20 - 15);
    03050         if (spd < v->cur_speed) v->cur_speed = spd;
    03051       }
    03052     }
    03053   } else if (v->type == VEH_ROAD) {
    03054     RoadVehicle *rv = RoadVehicle::From(v);
    03055     if (rv->state < RVSB_IN_ROAD_STOP && !IsReversingRoadTrackdir((Trackdir)rv->state) && rv->frame == 0) {
    03056       if (IsRoadStop(tile) && rv->IsFrontEngine()) {
    03057         /* Attempt to allocate a parking bay in a road stop */
    03058         return RoadStop::GetByTile(tile, GetRoadStopType(tile))->Enter(rv) ? VETSB_CONTINUE : VETSB_CANNOT_ENTER;
    03059       }
    03060     }
    03061   }
    03062
    03063   return VETSB_CONTINUE;
    03064 }
    03065
    03072 static bool StationHandleBigTick(BaseStation *st)
    03073 {
    03074   if (!st->IsInUse() && ++st->delete_ctr >= 8) {
    03075     delete st;
    03076     return false;
    03077   }
    03078
    03079   if (Station::IsExpected(st)) {
    03080     for (CargoID i = 0; i < NUM_CARGO; i++) {
    03081       ClrBit(Station::From(st)->goods[i].acceptance_pickup, GoodsEntry::GES_ACCEPTED_BIGTICK);
    03082     }
    03083   }
    03084
    03085
    03086   if ((st->facilities & FACIL_WAYPOINT) == 0) UpdateStationAcceptance(Station::From(st), true);
    03087
    03088   return true;
    03089 }
    03090
    03091 static inline void byte_inc_sat(byte *p)
    03092 {
    03093   byte b = *p + 1;
    03094   if (b != 0) *p = b;
    03095 }
    03096
    03097 static void UpdateStationRating(Station *st)
    03098 {
    03099   bool waiting_changed = false;
    03100
    03101   byte_inc_sat(&st->time_since_load);
    03102   byte_inc_sat(&st->time_since_unload);
    03103
    03104   const CargoSpec *cs;
    03105   FOR_ALL_CARGOSPECS(cs) {
    03106     GoodsEntry *ge = &st->goods[cs->Index()];
    03107     /* Slowly increase the rating back to his original level in the case we
    03108      *  didn't deliver cargo yet to this station. This happens when a bribe
    03109      *  failed while you didn't moved that cargo yet to a station. */
    03110     if (!HasBit(ge->acceptance_pickup, GoodsEntry::GES_PICKUP) && ge->rating < INITIAL_STATION_RATING) {
    03111       ge->rating++;
    03112     }
    03113
    03114     /* Only change the rating if we are moving this cargo */
    03115     if (HasBit(ge->acceptance_pickup, GoodsEntry::GES_PICKUP)) {
    03116       byte_inc_sat(&ge->days_since_pickup);
    03117
    03118       bool skip = false;
    03119       int rating = 0;
    03120       uint waiting = ge->cargo.Count();
    03121
    03122       /* num_dests is at least 1 if there is any cargo as
    03123        * INVALID_STATION is also a destination.
    03124        */
    03125       uint num_dests = (uint)ge->cargo.Packets()->MapSize();
    03126
    03127       /* Average amount of cargo per next hop, but prefer solitary stations
    03128        * with only one or two next hops. They are allowed to have more
    03129        * cargo waiting per next hop.
    03130        * With manual cargo distribution waiting_avg = waiting / 2 as then
    03131        * INVALID_STATION is the only destination.
    03132        */
    03133       uint waiting_avg = waiting / (num_dests + 1);
    03134
    03135       if (HasBit(cs->callback_mask, CBM_CARGO_STATION_RATING_CALC)) {
    03136         /* Perform custom station rating. If it succeeds the speed, days in transit and
    03137          * waiting cargo ratings must not be executed. */
    03138
    03139         /* NewGRFs expect last speed to be 0xFF when no vehicle has arrived yet. */
    03140         uint last_speed = ge->last_speed;
    03141         if (last_speed == 0) last_speed = 0xFF;
    03142
    03143         uint32 var18 = min(ge->days_since_pickup, 0xFF) | (min(ge->max_waiting_cargo, 0xFFFF) << 8) | (min(last_speed, 0xFF) << 24);
    03144         /* Convert to the 'old' vehicle types */
    03145         uint32 var10 = (st->last_vehicle_type == VEH_INVALID) ? 0x0 : (st->last_vehicle_type + 0x10);
    03146         uint16 callback = GetCargoCallback(CBID_CARGO_STATION_RATING_CALC, var10, var18, cs);
    03147         if (callback != CALLBACK_FAILED) {
    03148           skip = true;
    03149           rating = GB(callback, 0, 14);
    03150
    03151           /* Simulate a 15 bit signed value */
    03152           if (HasBit(callback, 14)) rating -= 0x4000;
    03153         }
    03154       }
    03155
    03156       if (!skip) {
    03157         int b = ge->last_speed - 85;
    03158         if (b >= 0) rating += b >> 2;
    03159
    03160         byte days = ge->days_since_pickup;
    03161         if (st->last_vehicle_type == VEH_SHIP) days >>= 2;
    03162         (days > 21) ||
    03163         (rating += 25, days > 12) ||
    03164         (rating += 25, days > 6) ||
    03165         (rating += 45, days > 3) ||
    03166         (rating += 35, true);
    03167
    03168         (rating -= 90, ge->max_waiting_cargo > 1500) ||
    03169         (rating += 55, ge->max_waiting_cargo > 1000) ||
    03170         (rating += 35, ge->max_waiting_cargo > 600) ||
    03171         (rating += 10, ge->max_waiting_cargo > 300) ||
    03172         (rating += 20, ge->max_waiting_cargo > 100) ||
    03173         (rating += 10, true);
    03174       }
    03175
    03176       if (Company::IsValidID(st->owner) && HasBit(st->town->statues, st->owner)) rating += 26;
    03177
    03178       byte age = ge->last_age;
    03179       (age >= 3) ||
    03180       (rating += 10, age >= 2) ||
    03181       (rating += 10, age >= 1) ||
    03182       (rating += 13, true);
    03183
    03184       {
    03185         int or_ = ge->rating; // old rating
    03186
    03187         /* only modify rating in steps of -2, -1, 0, 1 or 2 */
    03188         ge->rating = rating = or_ + Clamp(Clamp(rating, 0, 255) - or_, -2, 2);
    03189
    03190         /* if rating is <= 64 and more than 100 items waiting on average per destination,
    03191          * remove some random amount of goods from the station */
    03192         if (rating <= 64 && waiting_avg >= 100) {
    03193           int dec = Random() & 0x1F;
    03194           if (waiting_avg < 200) dec &= 7;
    03195           waiting -= (dec + 1) * num_dests;
    03196           waiting_changed = true;
    03197         }
    03198
    03199         /* if rating is <= 127 and there are any items waiting, maybe remove some goods. */
    03200         if (rating <= 127 && waiting != 0) {
    03201           uint32 r = Random();
    03202           if (rating <= (int)GB(r, 0, 7)) {
    03203             /* Need to have int, otherwise it will just overflow etc. */
    03204             waiting = max((int)waiting - (int)((GB(r, 8, 2) - 1) * num_dests), 0);
    03205             waiting_changed = true;
    03206           }
    03207         }
    03208
    03209         /* At some point we really must cap the cargo. Previously this
    03210          * was a strict 4095, but now we'll have a less strict, but
    03211          * increasingly agressive truncation of the amount of cargo. */
    03212         static const uint WAITING_CARGO_THRESHOLD  = 1 << 12;
    03213         static const uint WAITING_CARGO_CUT_FACTOR = 1 <<  6;
    03214         static const uint MAX_WAITING_CARGO        = 1 << 15;
    03215
    03216         if (waiting > WAITING_CARGO_THRESHOLD) {
    03217           uint difference = waiting - WAITING_CARGO_THRESHOLD;
    03218           waiting -= (difference / WAITING_CARGO_CUT_FACTOR);
    03219
    03220           waiting = min(waiting, MAX_WAITING_CARGO);
    03221           waiting_changed = true;
    03222         }
    03223
    03224         if (waiting_changed) {
    03225           /* feed back the exact own waiting cargo at this station for the
    03226            * next rating calculation.
    03227            */
    03228           ge->max_waiting_cargo = 0;
    03229
    03230           /* If truncating also punish the source stations' ratings to
    03231            * decrease the flow of incoming cargo. */
    03232
    03233           StationCargoAmountMap waiting_per_source;
    03234           ge->cargo.CountAndTruncate(waiting, waiting_per_source);
    03235           for (StationCargoAmountMap::iterator i(waiting_per_source.begin()); i != waiting_per_source.end(); ++i) {
    03236             Station *source_station = Station::GetIfValid(i->first);
    03237             if (source_station == NULL) continue;
    03238
    03239             GoodsEntry &source_ge = source_station->goods[cs->Index()];
    03240             source_ge.max_waiting_cargo = max(source_ge.max_waiting_cargo, i->second);
    03241           }
    03242         } else {
    03243           /* if the average number per next hop is low, be more forgiving. */
    03244           ge->max_waiting_cargo = waiting_avg;
    03245         }
    03246       }
    03247     }
    03248   }
    03249
    03250   StationID index = st->index;
    03251   if (waiting_changed) {
    03252     SetWindowDirty(WC_STATION_VIEW, index); // update whole window
    03253   } else {
    03254     SetWindowWidgetDirty(WC_STATION_VIEW, index, SVW_RATINGLIST); // update only ratings list
    03255   }
    03256 }
    03257
    03264 void DeleteStaleFlows(StationID at, CargoID c_id, StationID to)
    03265 {
    03266   FlowStatMap &flows = Station::Get(at)->goods[c_id].flows;
    03267   for (FlowStatMap::iterator f_it = flows.begin(); f_it != flows.end();) {
    03268     FlowStatSet &s_flows = f_it->second;
    03269     for (FlowStatSet::iterator s_it = s_flows.begin(); s_it != s_flows.end();) {
    03270       if (s_it->Via() == to) {
    03271         s_flows.erase(s_it++);
    03272         break; // There can only be one flow stat for this remote station in each set.
    03273       } else {
    03274         ++s_it;
    03275       }
    03276     }
    03277     if (s_flows.empty()) {
    03278       flows.erase(f_it++);
    03279     } else {
    03280       ++f_it;
    03281     }
    03282   }
    03283 }
    03284
    03291 uint GetMovingAverageLength(const Station *from, const Station *to)
    03292 {
    03293   return LinkStat::MIN_AVERAGE_LENGTH + (DistanceManhattan(from->xy, to->xy) >> 2);
    03294 }
    03295
    03299 void Station::RunAverages()
    03300 {
    03301   FlowStatSet new_flows;
    03302   for (int goods_index = 0; goods_index < NUM_CARGO; ++goods_index) {
    03303     LinkStatMap &links = this->goods[goods_index].link_stats;
    03304     for (LinkStatMap::iterator i = links.begin(); i != links.end();) {
    03305       StationID id = i->first;
    03306       Station *other = Station::GetIfValid(id);
    03307       if (other == NULL) {
    03308         this->goods[goods_index].cargo.RerouteStalePackets(id);
    03309         links.erase(i++);
    03310       } else {
    03311         LinkStat &ls = i->second;
    03312         ls.Decrease();
    03313         if (ls.IsNull()) {
    03314           DeleteStaleFlows(this->index, goods_index, id);
    03315           this->goods[goods_index].cargo.RerouteStalePackets(id);
    03316           links.erase(i++);
    03317         } else {
    03318           ++i;
    03319         }
    03320       }
    03321     }
    03322
    03323     if (_settings_game.linkgraph.GetDistributionType(goods_index) == DT_MANUAL) {
    03324       this->goods[goods_index].flows.clear();
    03325       continue;
    03326     }
    03327
    03328     FlowStatMap &flows = this->goods[goods_index].flows;
    03329     for (FlowStatMap::iterator i = flows.begin(); i != flows.end();) {
    03330       if (!Station::IsValidID(i->first)) {
    03331         flows.erase(i++);
    03332       } else {
    03333         FlowStatSet &flow_set = i->second;
    03334         for (FlowStatSet::iterator j = flow_set.begin(); j != flow_set.end(); ++j) {
    03335           if (Station::IsValidID(j->Via())) {
    03336             new_flows.insert(j->GetDecreasedCopy());
    03337           }
    03338         }
    03339         flow_set.swap(new_flows);
    03340         new_flows.clear();
    03341         ++i;
    03342       }
    03343     }
    03344   }
    03345 }
    03346
    03352 void RecalcFrozenIfLoading(const Vehicle *v)
    03353 {
    03354   if (v->current_order.IsType(OT_LOADING)) {
    03355     RecalcFrozen(Station::Get(v->last_station_visited));
    03356   }
    03357 }
    03358
    03364 void RecalcFrozen(Station *st)
    03365 {
    03366   for (CargoID cargo = 0; cargo < NUM_CARGO; ++cargo) {
    03367     LinkStatMap &links = st->goods[cargo].link_stats;
    03368     for (LinkStatMap::iterator i = links.begin(); i != links.end(); ++i) {
    03369       i->second.Unfreeze();
    03370     }
    03371   }
    03372
    03373   std::list<Vehicle *>::iterator v_it = st->loading_vehicles.begin();
    03374   while (v_it != st->loading_vehicles.end()) {
    03375     const Vehicle *front = *v_it;
    03376     OrderList *orders = front->orders.list;
    03377     if (orders != NULL) {
    03378       StationID next_station_id = orders->GetNextStoppingStation(front->cur_implicit_order_index, st->index);
    03379       if (next_station_id != INVALID_STATION && next_station_id != st->index) {
    03380         IncreaseStats(st, front, next_station_id, true);
    03381       }
    03382     }
    03383     ++v_it;
    03384   }
    03385 }
    03386
    03394 void DecreaseFrozen(Station *st, const Vehicle *front, StationID next_station_id) {
    03395   assert(st->index != next_station_id);
    03396   assert(next_station_id != INVALID_STATION);
    03397   for (const Vehicle *v = front; v != NULL; v = v->Next()) {
    03398     if (v->cargo_cap <= 0) continue;
    03399
    03400     LinkStatMap &link_stats = st->goods[v->cargo_type].link_stats;
    03401     LinkStatMap::iterator lstat_it = link_stats.find(next_station_id);
    03402     if (lstat_it == link_stats.end()) {
    03403       DEBUG(misc, 1, "frozen not in linkstat list.");
    03404       RecalcFrozen(st);
    03405       return;
    03406     }
    03407
    03408     LinkStat &link_stat = lstat_it->second;
    03409     if (link_stat.Frozen() < v->cargo_cap) {
    03410       DEBUG(misc, 1, "frozen is smaller than cargo cap.");
    03411       RecalcFrozen(st);
    03412       return;
    03413     }
    03414     link_stat.Unfreeze(v->cargo_cap);
    03415     assert(!link_stat.IsNull());
    03416   }
    03417 }
    03418
    03427 void IncreaseStats(Station *st, const Vehicle *front, StationID next_station_id, bool freeze)
    03428 {
    03429   Station *next = Station::GetIfValid(next_station_id);
    03430   assert(st->index != next_station_id && next != NULL);
    03431   uint average_length = GetMovingAverageLength(st, next);
    03432
    03433   for (const Vehicle *v = front; v != NULL; v = v->Next()) {
    03434     if (v->cargo_cap > 0) {
    03435       LinkStatMap &stats = st->goods[v->cargo_type].link_stats;
    03436       LinkStatMap::iterator i = stats.find(next_station_id);
    03437       if (i == stats.end()) {
    03438         stats.insert(std::make_pair(next_station_id, LinkStat(average_length,
    03439             v->cargo_cap, freeze ? v->cargo_cap : 0, freeze ? 0 : v->cargo.Count())));
    03440       } else {
    03441         LinkStat &link_stat = i->second;
    03442         if (freeze) {
    03443           link_stat.Freeze(v->cargo_cap);
    03444         } else {
    03445           link_stat.Increase(v->cargo_cap, v->cargo.Count());
    03446         }
    03447         assert(!link_stat.IsNull());
    03448       }
    03449     }
    03450   }
    03451 }
    03452
    03453 /* Called for every station each tick. */
    03454 static void StationHandleSmallTick(BaseStation *st)
    03455 {
    03456   if ((st->facilities & FACIL_WAYPOINT) != 0 || !st->IsInUse()) return;
    03457
    03458   byte b = st->delete_ctr + 1;
    03459   if (b >= STATION_RATING_TICKS) b = 0;
    03460   st->delete_ctr = b;
    03461
    03462   if (b == 0) UpdateStationRating(Station::From(st));
    03463 }
    03464
    03465 void OnTick_Station()
    03466 {
    03467   if (_game_mode == GM_EDITOR) return;
    03468
    03469   RunAverages<Station>();
    03470
    03471   BaseStation *st;
    03472   FOR_ALL_BASE_STATIONS(st) {
    03473     StationHandleSmallTick(st);
    03474
    03475     /* Run STATION_ACCEPTANCE_TICKS = 250 tick interval trigger for station animation.
    03476      * Station index is included so that triggers are not all done
    03477      * at the same time. */
    03478     if ((_tick_counter + st->index) % STATION_ACCEPTANCE_TICKS == 0) {
    03479       /* Stop processing this station if it was deleted */
    03480       if (!StationHandleBigTick(st)) continue;
    03481       TriggerStationAnimation(st, st->xy, SAT_250_TICKS);
    03482       if (Station::IsExpected(st)) AirportAnimationTrigger(Station::From(st), AAT_STATION_250_TICKS);
    03483     }
    03484   }
    03485 }
    03486
    03488 void StationMonthlyLoop()
    03489 {
    03490   Station *st;
    03491
    03492   FOR_ALL_STATIONS(st) {
    03493     for(int goods_index = 0; goods_index < NUM_CARGO; ++goods_index) {
    03494       st->goods[goods_index].supply = st->goods[goods_index].supply_new;
    03495       st->goods[goods_index].supply_new = 0;
    03496     }
    03497   }
    03498
    03499   FOR_ALL_STATIONS(st) {
    03500     for (CargoID i = 0; i < NUM_CARGO; i++) {
    03501       GoodsEntry *ge = &st->goods[i];
    03502       SB(ge->acceptance_pickup, GoodsEntry::GES_LAST_MONTH, 1, GB(ge->acceptance_pickup, GoodsEntry::GES_CURRENT_MONTH, 1));
    03503       ClrBit(ge->acceptance_pickup, GoodsEntry::GES_CURRENT_MONTH);
    03504     }
    03505   }
    03506 }
    03507
    03508
    03509 void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint radius)
    03510 {
    03511   Station *st;
    03512
    03513   FOR_ALL_STATIONS(st) {
    03514     if (st->owner == owner &&
    03515         DistanceManhattan(tile, st->xy) <= radius) {
    03516       for (CargoID i = 0; i < NUM_CARGO; i++) {
    03517         GoodsEntry *ge = &st->goods[i];
    03518
    03519         if (ge->acceptance_pickup != 0) {
    03520           ge->rating = Clamp(ge->rating + amount, 0, 255);
    03521         }
    03522       }
    03523     }
    03524   }
    03525 }
    03526
    03527 static uint UpdateStationWaiting(Station *st, CargoID type, uint amount, SourceType source_type, SourceID source_id)
    03528 {
    03529   /* We can't allocate a CargoPacket? Then don't do anything
    03530    * at all; i.e. just discard the incoming cargo. */
    03531   if (!CargoPacket::CanAllocateItem()) return 0;
    03532
    03533   GoodsEntry &ge = st->goods[type];
    03534   amount += ge.amount_fract;
    03535   ge.amount_fract = GB(amount, 0, 8);
    03536
    03537   amount >>= 8;
    03538   /* No new "real" cargo item yet. */
    03539   if (amount == 0) return 0;
    03540
    03541   StationID id = st->index;
    03542   StationID next = INVALID_STATION;
    03543   FlowStatSet &flow_stats = ge.flows[id];
    03544   FlowStatSet::iterator i = flow_stats.begin();
    03545   if (i != flow_stats.end()) {
    03546     next = i->Via();
    03547     const FlowStat &f = *i;
    03548
    03549     if (_settings_game.linkgraph.no_overload_links &&
    03550         _settings_game.linkgraph.GetDistributionType(type) == DT_SYMMETRIC) {
    03551       int limit = f.Planned() - f.Sent();
    03552
    03553       LinkStatMap::const_iterator it = ge.link_stats.find(next);
    03554       const LinkStat &ls = (it->second);
    03555
    03556       /* Don't send more than was planned or if the link's usage is higher than permitted. */
    03557       limit = min(limit, (ls.Capacity() * _settings_game.linkgraph.short_path_saturation) / 100 - ls.Usage());
    03558
    03559       if (limit < 0) {
    03560         limit = 0;
    03561       }
    03562
    03563       if (amount > (uint)limit) {
    03564         amount = (uint)limit;
    03565       }
    03566     }
    03567
    03568     ge.UpdateFlowStats(flow_stats, i, amount);
    03569
    03570     if (amount == 0) {
    03571       return amount;
    03572     }
    03573   }
    03574
    03575   ge.cargo.Append(next, new CargoPacket(st->index, st->xy, amount, source_type, source_id));
    03576   ge.supply_new += amount;
    03577
    03578   if (!HasBit(ge.acceptance_pickup, GoodsEntry::GES_PICKUP)) {
    03579     InvalidateWindowData(WC_STATION_LIST, st->index);
    03580     SetBit(ge.acceptance_pickup, GoodsEntry::GES_PICKUP);
    03581   }
    03582
    03583   TriggerStationAnimation(st, st->xy, SAT_NEW_CARGO, type);
    03584   AirportAnimationTrigger(st, AAT_STATION_NEW_CARGO, type);
    03585
    03586   SetWindowDirty(WC_STATION_VIEW, st->index);
    03587   st->MarkTilesDirty(true);
    03588   return amount;
    03589 }
    03590
    03591 static bool IsUniqueStationName(const char *name)
    03592 {
    03593   const Station *st;
    03594
    03595   FOR_ALL_STATIONS(st) {
    03596     if (st->name != NULL && strcmp(st->name, name) == 0) return false;
    03597   }
    03598
    03599   return true;
    03600 }
    03601
    03611 CommandCost CmdRenameStation(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    03612 {
    03613   Station *st = Station::GetIfValid(p1);
    03614   if (st == NULL) return CMD_ERROR;
    03615
    03616   CommandCost ret = CheckOwnership(st->owner);
    03617   if (ret.Failed()) return ret;
    03618
    03619   bool reset = StrEmpty(text);
    03620
    03621   if (!reset) {
    03622     if (Utf8StringLength(text) >= MAX_LENGTH_STATION_NAME_CHARS) return CMD_ERROR;
    03623     if (!IsUniqueStationName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
    03624   }
    03625
    03626   if (flags & DC_EXEC) {
    03627     free(st->name);
    03628     st->name = reset ? NULL : strdup(text);
    03629
    03630     st->UpdateVirtCoord();
    03631     InvalidateWindowData(WC_STATION_LIST, st->owner, 1);
    03632   }
    03633
    03634   return CommandCost();
    03635 }
    03636
    03643 void FindStationsAroundTiles(const TileArea &location, StationList *stations)
    03644 {
    03645   /* area to search = producer plus station catchment radius */
    03646   int max_rad = (_settings_game.station.modified_catchment ? MAX_CATCHMENT : CA_UNMODIFIED);
    03647
    03648   for (int dy = -max_rad; dy < location.h + max_rad; dy++) {
    03649     for (int dx = -max_rad; dx < location.w + max_rad; dx++) {
    03650       TileIndex cur_tile = TileAddWrap(location.tile, dx, dy);
    03651       if (cur_tile == INVALID_TILE || !IsTileType(cur_tile, MP_STATION)) continue;
    03652
    03653       Station *st = Station::GetByTile(cur_tile);
    03654       if (st == NULL) continue;
    03655
    03656       if (_settings_game.station.modified_catchment) {
    03657         int rad = st->GetCatchmentRadius();
    03658         if (dx < -rad || dx >= rad + location.w || dy < -rad || dy >= rad + location.h) continue;
    03659       }
    03660
    03661       /* Insert the station in the set. This will fail if it has
    03662        * already been added.
    03663        */
    03664       stations->Include(st);
    03665     }
    03666   }
    03667 }
    03668
    03673 const StationList *StationFinder::GetStations()
    03674 {
    03675   if (this->tile != INVALID_TILE) {
    03676     FindStationsAroundTiles(*this, &this->stations);
    03677     this->tile = INVALID_TILE;
    03678   }
    03679   return &this->stations;
    03680 }
    03681
    03682 uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations)
    03683 {
    03684   /* Return if nothing to do. Also the rounding below fails for 0. */
    03685   if (amount == 0) return 0;
    03686
    03687   Station *st1 = NULL;   // Station with best rating
    03688   Station *st2 = NULL;   // Second best station
    03689   uint best_rating1 = 0; // rating of st1
    03690   uint best_rating2 = 0; // rating of st2
    03691
    03692   for (Station * const *st_iter = all_stations->Begin(); st_iter != all_stations->End(); ++st_iter) {
    03693     Station *st = *st_iter;
    03694
    03695     /* Is the station reserved exclusively for somebody else? */
    03696     if (st->town->exclusive_counter > 0 && st->town->exclusivity != st->owner) continue;
    03697
    03698     if (st->goods[type].rating == 0) continue; // Lowest possible rating, better not to give cargo anymore
    03699
    03700     if (_settings_game.order.selectgoods && st->goods[type].last_speed == 0) continue; // Selectively servicing stations, and not this one
    03701
    03702     if (IsCargoInClass(type, CC_PASSENGERS)) {
    03703       if (st->facilities == FACIL_TRUCK_STOP) continue; // passengers are never served by just a truck stop
    03704     } else {
    03705       if (st->facilities == FACIL_BUS_STOP) continue; // non-passengers are never served by just a bus stop
    03706     }
    03707
    03708     /* This station can be used, add it to st1/st2 */
    03709     if (st1 == NULL || st->goods[type].rating >= best_rating1) {
    03710       st2 = st1; best_rating2 = best_rating1; st1 = st; best_rating1 = st->goods[type].rating;
    03711     } else if (st2 == NULL || st->goods[type].rating >= best_rating2) {
    03712       st2 = st; best_rating2 = st->goods[type].rating;
    03713     }
    03714   }
    03715
    03716   /* no stations around at all? */
    03717   if (st1 == NULL) return 0;
    03718
    03719   /* From now we'll calculate with fractal cargo amounts.
    03720    * First determine how much cargo we really have. */
    03721   amount *= best_rating1 + 1;
    03722
    03723   if (st2 == NULL) {
    03724     /* only one station around */
    03725     return UpdateStationWaiting(st1, type, amount, source_type, source_id);
    03726   }
    03727
    03728   /* several stations around, the best two (highest rating) are in st1 and st2 */
    03729   assert(st1 != NULL);
    03730   assert(st2 != NULL);
    03731   assert(best_rating1 != 0 || best_rating2 != 0);
    03732
    03733   /* Then determine the amount the worst station gets. We do it this way as the
    03734    * best should get a bonus, which in this case is the rounding difference from
    03735    * this calculation. In reality that will mean the bonus will be pretty low.
    03736    * Nevertheless, the best station should always get the most cargo regardless
    03737    * of rounding issues. */
    03738   uint worst_cargo = amount * best_rating2 / (best_rating1 + best_rating2);
    03739   assert(worst_cargo <= (amount - worst_cargo));
    03740
    03741   /* And then send the cargo to the stations! */
    03742   uint moved = UpdateStationWaiting(st1, type, amount - worst_cargo, source_type, source_id);
    03743   /* These two UpdateStationWaiting's can't be in the statement as then the order
    03744    * of execution would be undefined and that could cause desyncs with callbacks. */
    03745   return moved + UpdateStationWaiting(st2, type, worst_cargo, source_type, source_id);
    03746 }
    03747
    03748 void BuildOilRig(TileIndex tile)
    03749 {
    03750   if (!Station::CanAllocateItem()) {
    03751     DEBUG(misc, 0, "Can't allocate station for oilrig at 0x%X, reverting to oilrig only", tile);
    03752     return;
    03753   }
    03754
    03755   Station *st = new Station(tile);
    03756   st->town = ClosestTownFromTile(tile, UINT_MAX);
    03757
    03758   st->string_id = GenerateStationName(st, tile, STATIONNAMING_OILRIG);
    03759
    03760   assert(IsTileType(tile, MP_INDUSTRY));
    03761   DeleteAnimatedTile(tile);
    03762   MakeOilrig(tile, st->index, GetWaterClass(tile));
    03763
    03764   st->owner = OWNER_NONE;
    03765   st->airport.type = AT_OILRIG;
    03766   st->airport.Add(tile);
    03767   st->dock_tile = tile;
    03768   st->facilities = FACIL_AIRPORT | FACIL_DOCK;
    03769   st->build_date = _date;
    03770
    03771   st->rect.BeforeAddTile(tile, StationRect::ADD_FORCE);
    03772
    03773   for (CargoID j = 0; j < NUM_CARGO; j++) {
    03774     st->goods[j].acceptance_pickup = 0;
    03775     st->goods[j].days_since_pickup = 255;
    03776     st->goods[j].rating = INITIAL_STATION_RATING;
    03777     st->goods[j].last_speed = 0;
    03778     st->goods[j].last_age = 255;
    03779   }
    03780
    03781   st->UpdateVirtCoord();
    03782   UpdateStationAcceptance(st, false);
    03783   st->RecomputeIndustriesNear();
    03784 }
    03785
    03786 void DeleteOilRig(TileIndex tile)
    03787 {
    03788   Station *st = Station::GetByTile(tile);
    03789
    03790   MakeWaterKeepingClass(tile, OWNER_NONE);
    03791
    03792   st->dock_tile = INVALID_TILE;
    03793   st->airport.Clear();
    03794   st->facilities &= ~(FACIL_AIRPORT | FACIL_DOCK);
    03795   st->airport.flags = 0;
    03796
    03797   st->rect.AfterRemoveTile(st, tile);
    03798
    03799   st->UpdateVirtCoord();
    03800   st->RecomputeIndustriesNear();
    03801   if (!st->IsInUse()) delete st;
    03802 }
    03803
    03804 static void ChangeTileOwner_Station(TileIndex tile, Owner old_owner, Owner new_owner)
    03805 {
    03806   if (IsRoadStopTile(tile)) {
    03807     for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
    03808       /* Update all roadtypes, no matter if they are present */
    03809       if (GetRoadOwner(tile, rt) == old_owner) {
    03810         if (HasTileRoadType(tile, rt)) {
    03811           /* A drive-through road-stop has always two road bits. No need to dirty windows here, we'll redraw the whole screen anyway. */
    03812           Company::Get(old_owner)->road_infrastructure[rt] -= 2;
    03813           if (new_owner != INVALID_OWNER) Company::Get(new_owner)->road_infrastructure[rt] += 2;
    03814         }
    03815         SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
    03816       }
    03817     }
    03818   }
    03819
    03820   if (!IsTileOwner(tile, old_owner)) return;
    03821
    03822   if (new_owner != INVALID_OWNER) {
    03823     /* Update company infrastructure counts. Only do it here
    03824      * if the new owner is valid as otherwise the clear
    03825      * command will do it for us. No need to dirty windows
    03826      * here, we'll redraw the whole screen anyway.*/
    03827     Company *old_company = Company::Get(old_owner);
    03828     Company *new_company = Company::Get(new_owner);
    03829
    03830     /* Update counts for underlying infrastructure. */
    03831     switch (GetStationType(tile)) {
    03832       case STATION_RAIL:
    03833       case STATION_WAYPOINT:
    03834         if (!IsStationTileBlocked(tile)) {
    03835           old_company->rail_infrastructure[GetRailType(tile)]--;
    03836           new_company->rail_infrastructure[GetRailType(tile)]++;
    03837         }
    03838         break;
    03839
    03840       case STATION_BUS:
    03841       case STATION_TRUCK:
    03842         /* Road stops were already handled above. */
    03843         break;
    03844
    03845       case STATION_BUOY:
    03846       case STATION_DOCK:
    03847         if (GetWaterClass(tile) == WATER_CLASS_CANAL) {
    03848           old_company->water_infrastructure--;
    03849           new_company->water_infrastructure++;
    03850         }
    03851       break;
    03852
    03853       default:
    03854         break;
    03855     }
    03856
    03857     /* Update station tile count. */
    03858     if (!IsBuoy(tile) && !IsAirport(tile)) {
    03859       old_company->station_infrastructure--;
    03860       new_company->station_infrastructure++;
    03861     }
    03862
    03863     /* for buoys, owner of tile is owner of water, st->owner == OWNER_NONE */
    03864     SetTileOwner(tile, new_owner);
    03865     InvalidateWindowClassesData(WC_STATION_LIST, 0);
    03866   } else {
    03867     if (IsDriveThroughStopTile(tile)) {
    03868       /* Remove the drive-through road stop */
    03869       DoCommand(tile, 1 | 1 << 8, (GetStationType(tile) == STATION_TRUCK) ? ROADSTOP_TRUCK : ROADSTOP_BUS, DC_EXEC | DC_BANKRUPT, CMD_REMOVE_ROAD_STOP);
    03870       assert(IsTileType(tile, MP_ROAD));
    03871       /* Change owner of tile and all roadtypes */
    03872       ChangeTileOwner(tile, old_owner, new_owner);
    03873     } else {
    03874       DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
    03875       /* Set tile owner of water under (now removed) buoy and dock to OWNER_NONE.
    03876        * Update owner of buoy if it was not removed (was in orders).
    03877        * Do not update when owned by OWNER_WATER (sea and rivers). */
    03878       if ((IsTileType(tile, MP_WATER) || IsBuoyTile(tile)) && IsTileOwner(tile, old_owner)) SetTileOwner(tile, OWNER_NONE);
    03879     }
    03880   }
    03881 }
    03882
    03891 static bool CanRemoveRoadWithStop(TileIndex tile, DoCommandFlag flags)
    03892 {
    03893   /* Yeah... water can always remove stops, right? */
    03894   if (_current_company == OWNER_WATER) return true;
    03895
    03896   RoadTypes rts = GetRoadTypes(tile);
    03897   if (HasBit(rts, ROADTYPE_TRAM)) {
    03898     Owner tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    03899     if (tram_owner != OWNER_NONE && CheckOwnership(tram_owner).Failed()) return false;
    03900   }
    03901   if (HasBit(rts, ROADTYPE_ROAD)) {
    03902     Owner road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    03903     if (road_owner != OWNER_TOWN) {
    03904       if (road_owner != OWNER_NONE && CheckOwnership(road_owner).Failed()) return false;
    03905     } else {
    03906       if (CheckAllowRemoveRoad(tile, GetAnyRoadBits(tile, ROADTYPE_ROAD), OWNER_TOWN, ROADTYPE_ROAD, flags).Failed()) return false;
    03907     }
    03908   }
    03909
    03910   return true;
    03911 }
    03912
    03919 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags)
    03920 {
    03921   if (flags & DC_AUTO) {
    03922     switch (GetStationType(tile)) {
    03923       default: break;
    03924       case STATION_RAIL:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_RAILROAD);
    03925       case STATION_WAYPOINT: return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
    03926       case STATION_AIRPORT:  return_cmd_error(STR_ERROR_MUST_DEMOLISH_AIRPORT_FIRST);
    03927       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);
    03928       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);
    03929       case STATION_BUOY:     return_cmd_error(STR_ERROR_BUOY_IN_THE_WAY);
    03930       case STATION_DOCK:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_DOCK_FIRST);
    03931       case STATION_OILRIG:
    03932         SetDParam(1, STR_INDUSTRY_NAME_OIL_RIG);
    03933         return_cmd_error(STR_ERROR_GENERIC_OBJECT_IN_THE_WAY);
    03934     }
    03935   }
    03936
    03937   switch (GetStationType(tile)) {
    03938     case STATION_RAIL:     return RemoveRailStation(tile, flags);
    03939     case STATION_WAYPOINT: return RemoveRailWaypoint(tile, flags);
    03940     case STATION_AIRPORT:  return RemoveAirport(tile, flags);
    03941     case STATION_TRUCK:
    03942       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
    03943         return_cmd_error(STR_ERROR_MUST_DEMOLISH_TRUCK_STATION_FIRST);
    03944       }
    03945       return RemoveRoadStop(tile, flags);
    03946     case STATION_BUS:
    03947       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
    03948         return_cmd_error(STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST);
    03949       }
    03950       return RemoveRoadStop(tile, flags);
    03951     case STATION_BUOY:     return RemoveBuoy(tile, flags);
    03952     case STATION_DOCK:     return RemoveDock(tile, flags);
    03953     default: break;
    03954   }
    03955
    03956   return CMD_ERROR;
    03957 }
    03958
    03959 static CommandCost TerraformTile_Station(TileIndex tile, DoCommandFlag flags, uint z_new, Slope tileh_new)
    03960 {
    03961   if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
    03962     /* TODO: If you implement newgrf callback 149 'land slope check', you have to decide what to do with it here.
    03963      *       TTDP does not call it.
    03964      */
    03965     if (!IsSteepSlope(tileh_new) && (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new))) {
    03966       switch (GetStationType(tile)) {
    03967         case STATION_WAYPOINT:
    03968         case STATION_RAIL: {
    03969           DiagDirection direction = AxisToDiagDir(GetRailStationAxis(tile));
    03970           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03971           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03972           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03973         }
    03974
    03975         case STATION_AIRPORT:
    03976           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03977
    03978         case STATION_TRUCK:
    03979         case STATION_BUS: {
    03980           DiagDirection direction = GetRoadStopDir(tile);
    03981           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03982           if (IsDriveThroughStopTile(tile)) {
    03983             if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03984           }
    03985           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03986         }
    03987
    03988         default: break;
    03989       }
    03990     }
    03991   }
    03992   return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    03993 }
    03994
    04001 void GoodsEntry::UpdateFlowStats(FlowStatSet &flow_stats, FlowStatSet::iterator flow_it, uint count)
    04002 {
    04003   FlowStat fs = *flow_it;
    04004   fs.Increase(count);
    04005   flow_stats.erase(flow_it);
    04006   flow_stats.insert(fs);
    04007 }
    04008
    04015 void GoodsEntry::UpdateFlowStats(FlowStatSet &flow_stats, uint count, StationID next)
    04016 {
    04017   FlowStatSet::iterator flow_it = flow_stats.begin();
    04018   while (flow_it != flow_stats.end()) {
    04019     StationID via = flow_it->Via();
    04020     if (via == next) { //usually the first one is the correct one
    04021       this->UpdateFlowStats(flow_stats, flow_it, count);
    04022       return;
    04023     } else {
    04024       ++flow_it;
    04025     }
    04026   }
    04027 }
    04028
    04035 void GoodsEntry::UpdateFlowStats(StationID source, uint count, StationID next)
    04036 {
    04037   if (source == INVALID_STATION || next == INVALID_STATION || this->flows.empty()) return;
    04038   FlowStatSet &flow_stats = this->flows[source];
    04039   this->UpdateFlowStats(flow_stats, count, next);
    04040 }
    04041
    04049 StationID GoodsEntry::UpdateFlowStatsTransfer(StationID source, uint count, StationID curr)
    04050 {
    04051   if (source == INVALID_STATION || this->flows.empty()) return INVALID_STATION;
    04052   FlowStatSet &flow_stats = this->flows[source];
    04053   FlowStatSet::iterator flow_it = flow_stats.begin();
    04054   while (flow_it != flow_stats.end()) {
    04055     StationID via = flow_it->Via();
    04056     if (via != curr) {
    04057       this->UpdateFlowStats(flow_stats, flow_it, count);
    04058       return via;
    04059     } else {
    04060       ++flow_it;
    04061     }
    04062   }
    04063   return INVALID_STATION;
    04064 }
    04065
    04071 FlowStat GoodsEntry::GetSumFlowVia(StationID via) const {
    04072   FlowStat ret(1, via);
    04073   for (FlowStatMap::const_iterator i = this->flows.begin(); i != this->flows.end(); ++i) {
    04074     const FlowStatSet &flow_set = i->second;
    04075     for (FlowStatSet::const_iterator j = flow_set.begin(); j != flow_set.end(); ++j) {
    04076       const FlowStat &flow = *j;
    04077       if (flow.Via() == via) {
    04078         ret += flow;
    04079       }
    04080     }
    04081   }
    04082   return ret;
    04083 }
    04084
    04085 extern const TileTypeProcs _tile_type_station_procs = {
    04086   DrawTile_Station,           // draw_tile_proc
    04087   GetSlopeZ_Station,          // get_slope_z_proc
    04088   ClearTile_Station,          // clear_tile_proc
    04089   NULL,                       // add_accepted_cargo_proc
    04090   GetTileDesc_Station,        // get_tile_desc_proc
    04091   GetTileTrackStatus_Station, // get_tile_track_status_proc
    04092   ClickTile_Station,          // click_tile_proc
    04093   AnimateTile_Station,        // animate_tile_proc
    04094   TileLoop_Station,           // tile_loop_clear
    04095   ChangeTileOwner_Station,    // change_tile_owner_clear
    04096   NULL,                       // add_produced_cargo_proc
    04097   VehicleEnter_Station,       // vehicle_enter_tile_proc
    04098   GetFoundation_Station,      // get_foundation_proc
    04099   TerraformTile_Station,      // terraform_tile_proc
    04100 };