# station_cmd.cpp

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    00001 /* $Id: station_cmd.cpp 18509 2009-12-15 13:59:20Z peter1138 $ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
    00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
    00008  */
    00009
    00012 #include "stdafx.h"
    00013 #include "openttd.h"
    00014 #include "aircraft.h"
    00015 #include "bridge_map.h"
    00016 #include "cmd_helper.h"
    00017 #include "landscape.h"
    00018 #include "viewport_func.h"
    00019 #include "command_func.h"
    00020 #include "town.h"
    00021 #include "news_func.h"
    00022 #include "train.h"
    00023 #include "roadveh.h"
    00024 #include "industry.h"
    00025 #include "newgrf_cargo.h"
    00026 #include "newgrf_station.h"
    00027 #include "newgrf_commons.h"
    00028 #include "pathfinder/yapf/yapf_cache.h"
    00029 #include "road_internal.h" /* For drawing catenary/checking road removal */
    00030 #include "variables.h"
    00031 #include "autoslope.h"
    00032 #include "water.h"
    00033 #include "station_gui.h"
    00034 #include "strings_func.h"
    00035 #include "functions.h"
    00036 #include "window_func.h"
    00037 #include "date_func.h"
    00038 #include "vehicle_func.h"
    00039 #include "string_func.h"
    00040 #include "animated_tile_func.h"
    00041 #include "elrail_func.h"
    00042 #include "station_base.h"
    00043 #include "roadstop_base.h"
    00044 #include "waypoint_base.h"
    00045 #include "waypoint_func.h"
    00046 #include "pbs.h"
    00047 #include "debug.h"
    00048
    00049 #include "table/strings.h"
    00050
    00057 bool IsHangar(TileIndex t)
    00058 {
    00059   assert(IsTileType(t, MP_STATION));
    00060
    00061   /* If the tile isn't an airport there's no chance it's a hangar. */
    00062   if (!IsAirport(t)) return false;
    00063
    00064   const Station *st = Station::GetByTile(t);
    00065   const AirportFTAClass *apc = st->Airport();
    00066
    00067   for (uint i = 0; i < apc->nof_depots; i++) {
    00068     if (st->airport_tile + ToTileIndexDiff(apc->airport_depots[i]) == t) return true;
    00069   }
    00070
    00071   return false;
    00072 }
    00073
    00081 template <class T>
    00082 bool GetStationAround(TileArea ta, StationID closest_station, T **st)
    00083 {
    00084   /* check around to see if there's any stations there */
    00085   TILE_LOOP(tile_cur, ta.w + 2, ta.h + 2, ta.tile - TileDiffXY(1, 1)) {
    00086     if (IsTileType(tile_cur, MP_STATION)) {
    00087       StationID t = GetStationIndex(tile_cur);
    00088
    00089       if (closest_station == INVALID_STATION) {
    00090         if (T::IsValidID(t)) closest_station = t;
    00091       } else if (closest_station != t) {
    00092         _error_message = STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING;
    00093         return false;
    00094       }
    00095     }
    00096   }
    00097   *st = (closest_station == INVALID_STATION) ? NULL : T::Get(closest_station);
    00098   return true;
    00099 }
    00100
    00106 typedef bool (*CMSAMatcher)(TileIndex tile);
    00107
    00114 static int CountMapSquareAround(TileIndex tile, CMSAMatcher cmp)
    00115 {
    00116   int num = 0;
    00117
    00118   for (int dx = -3; dx <= 3; dx++) {
    00119     for (int dy = -3; dy <= 3; dy++) {
    00120       TileIndex t = TileAddWrap(tile, dx, dy);
    00121       if (t != INVALID_TILE && cmp(t)) num++;
    00122     }
    00123   }
    00124
    00125   return num;
    00126 }
    00127
    00133 static bool CMSAMine(TileIndex tile)
    00134 {
    00135   /* No industry */
    00136   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00137
    00138   const Industry *ind = Industry::GetByTile(tile);
    00139
    00140   /* No extractive industry */
    00141   if ((GetIndustrySpec(ind->type)->life_type & INDUSTRYLIFE_EXTRACTIVE) == 0) return false;
    00142
    00143   for (uint i = 0; i < lengthof(ind->produced_cargo); i++) {
    00144     /* The industry extracts something non-liquid, i.e. no oil or plastic, so it is a mine.
    00145      * Also the production of passengers and mail is ignored. */
    00146     if (ind->produced_cargo[i] != CT_INVALID &&
    00147         (CargoSpec::Get(ind->produced_cargo[i])->classes & (CC_LIQUID | CC_PASSENGERS | CC_MAIL)) == 0) {
    00148       return true;
    00149     }
    00150   }
    00151
    00152   return false;
    00153 }
    00154
    00160 static bool CMSAWater(TileIndex tile)
    00161 {
    00162   return IsTileType(tile, MP_WATER) && IsWater(tile);
    00163 }
    00164
    00170 static bool CMSATree(TileIndex tile)
    00171 {
    00172   return IsTileType(tile, MP_TREES);
    00173 }
    00174
    00180 static bool CMSAForest(TileIndex tile)
    00181 {
    00182   /* No industry */
    00183   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00184
    00185   const Industry *ind = Industry::GetByTile(tile);
    00186
    00187   /* No extractive industry */
    00188   if ((GetIndustrySpec(ind->type)->life_type & INDUSTRYLIFE_ORGANIC) == 0) return false;
    00189
    00190   for (uint i = 0; i < lengthof(ind->produced_cargo); i++) {
    00191     /* The industry produces wood. */
    00192     if (ind->produced_cargo[i] != CT_INVALID && CargoSpec::Get(ind->produced_cargo[i])->label == 'WOOD') return true;
    00193   }
    00194
    00195   return false;
    00196 }
    00197
    00198 #define M(x) ((x) - STR_SV_STNAME)
    00199
    00200 enum StationNaming {
    00201   STATIONNAMING_RAIL,
    00202   STATIONNAMING_ROAD,
    00203   STATIONNAMING_AIRPORT,
    00204   STATIONNAMING_OILRIG,
    00205   STATIONNAMING_DOCK,
    00206   STATIONNAMING_HELIPORT,
    00207 };
    00208
    00210 struct StationNameInformation {
    00211   uint32 free_names;
    00212   bool *indtypes;
    00213 };
    00214
    00223 static bool FindNearIndustryName(TileIndex tile, void *user_data)
    00224 {
    00225   /* All already found industry types */
    00226   StationNameInformation *sni = (StationNameInformation*)user_data;
    00227   if (!IsTileType(tile, MP_INDUSTRY)) return false;
    00228
    00229   /* If the station name is undefined it means that it doesn't name a station */
    00230   IndustryType indtype = GetIndustryType(tile);
    00231   if (GetIndustrySpec(indtype)->station_name == STR_UNDEFINED) return false;
    00232
    00233   /* In all cases if an industry that provides a name is found two of
    00234    * the standard names will be disabled. */
    00235   sni->free_names &= ~(1 << M(STR_SV_STNAME_OILFIELD) | 1 << M(STR_SV_STNAME_MINES));
    00236   return !sni->indtypes[indtype];
    00237 }
    00238
    00239 static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming name_class)
    00240 {
    00241   static const uint32 _gen_station_name_bits[] = {
    00242     0,                                       // STATIONNAMING_RAIL
    00243     0,                                       // STATIONNAMING_ROAD
    00244     1U << M(STR_SV_STNAME_AIRPORT),          // STATIONNAMING_AIRPORT
    00245     1U << M(STR_SV_STNAME_OILFIELD),         // STATIONNAMING_OILRIG
    00246     1U << M(STR_SV_STNAME_DOCKS),            // STATIONNAMING_DOCK
    00247     1U << M(STR_SV_STNAME_HELIPORT),         // STATIONNAMING_HELIPORT
    00248   };
    00249
    00250   const Town *t = st->town;
    00251   uint32 free_names = UINT32_MAX;
    00252
    00253   bool indtypes[NUM_INDUSTRYTYPES];
    00254   memset(indtypes, 0, sizeof(indtypes));
    00255
    00256   const Station *s;
    00257   FOR_ALL_STATIONS(s) {
    00258     if (s != st && s->town == t) {
    00259       if (s->indtype != IT_INVALID) {
    00260         indtypes[s->indtype] = true;
    00261         continue;
    00262       }
    00263       uint str = M(s->string_id);
    00264       if (str <= 0x20) {
    00265         if (str == M(STR_SV_STNAME_FOREST)) {
    00266           str = M(STR_SV_STNAME_WOODS);
    00267         }
    00268         ClrBit(free_names, str);
    00269       }
    00270     }
    00271   }
    00272
    00273   TileIndex indtile = tile;
    00274   StationNameInformation sni = { free_names, indtypes };
    00275   if (CircularTileSearch(&indtile, 7, FindNearIndustryName, &sni)) {
    00276     /* An industry has been found nearby */
    00277     IndustryType indtype = GetIndustryType(indtile);
    00278     const IndustrySpec *indsp = GetIndustrySpec(indtype);
    00279     /* STR_NULL means it only disables oil rig/mines */
    00280     if (indsp->station_name != STR_NULL) {
    00281       st->indtype = indtype;
    00282       return STR_SV_STNAME_FALLBACK;
    00283     }
    00284   }
    00285
    00286   /* Oil rigs/mines name could be marked not free by looking for a near by industry. */
    00287   free_names = sni.free_names;
    00288
    00289   /* check default names */
    00290   uint32 tmp = free_names & _gen_station_name_bits[name_class];
    00291   if (tmp != 0) return STR_SV_STNAME + FindFirstBit(tmp);
    00292
    00293   /* check mine? */
    00294   if (HasBit(free_names, M(STR_SV_STNAME_MINES))) {
    00295     if (CountMapSquareAround(tile, CMSAMine) >= 2) {
    00296       return STR_SV_STNAME_MINES;
    00297     }
    00298   }
    00299
    00300   /* check close enough to town to get central as name? */
    00301   if (DistanceMax(tile, t->xy) < 8) {
    00302     if (HasBit(free_names, M(STR_SV_STNAME))) return STR_SV_STNAME;
    00303
    00304     if (HasBit(free_names, M(STR_SV_STNAME_CENTRAL))) return STR_SV_STNAME_CENTRAL;
    00305   }
    00306
    00307   /* Check lakeside */
    00308   if (HasBit(free_names, M(STR_SV_STNAME_LAKESIDE)) &&
    00309       DistanceFromEdge(tile) < 20 &&
    00310       CountMapSquareAround(tile, CMSAWater) >= 5) {
    00311     return STR_SV_STNAME_LAKESIDE;
    00312   }
    00313
    00314   /* Check woods */
    00315   if (HasBit(free_names, M(STR_SV_STNAME_WOODS)) && (
    00316         CountMapSquareAround(tile, CMSATree) >= 8 ||
    00317         CountMapSquareAround(tile, CMSAForest) >= 2)
    00318       ) {
    00319     return _settings_game.game_creation.landscape == LT_TROPIC ? STR_SV_STNAME_FOREST : STR_SV_STNAME_WOODS;
    00320   }
    00321
    00322   /* check elevation compared to town */
    00323   uint z = GetTileZ(tile);
    00324   uint z2 = GetTileZ(t->xy);
    00325   if (z < z2) {
    00326     if (HasBit(free_names, M(STR_SV_STNAME_VALLEY))) return STR_SV_STNAME_VALLEY;
    00327   } else if (z > z2) {
    00328     if (HasBit(free_names, M(STR_SV_STNAME_HEIGHTS))) return STR_SV_STNAME_HEIGHTS;
    00329   }
    00330
    00331   /* check direction compared to town */
    00332   static const int8 _direction_and_table[] = {
    00333     ~( (1 << M(STR_SV_STNAME_WEST))  | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00334     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00335     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
    00336     ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_EAST)) ),
    00337   };
    00338
    00339   free_names &= _direction_and_table[
    00340     (TileX(tile) < TileX(t->xy)) +
    00341     (TileY(tile) < TileY(t->xy)) * 2];
    00342
    00343   tmp = free_names & ((1 << 1) | (1 << 2) | (1 << 3) | (1 << 4) | (1 << 6) | (1 << 7) | (1 << 12) | (1 << 26) | (1 << 27) | (1 << 28) | (1 << 29) | (1 << 30));
    00344   return (tmp == 0) ? STR_SV_STNAME_FALLBACK : (STR_SV_STNAME + FindFirstBit(tmp));
    00345 }
    00346 #undef M
    00347
    00353 static Station *GetClosestDeletedStation(TileIndex tile)
    00354 {
    00355   uint threshold = 8;
    00356   Station *best_station = NULL;
    00357   Station *st;
    00358
    00359   FOR_ALL_STATIONS(st) {
    00360     if (!st->IsInUse() && st->owner == _current_company) {
    00361       uint cur_dist = DistanceManhattan(tile, st->xy);
    00362
    00363       if (cur_dist < threshold) {
    00364         threshold = cur_dist;
    00365         best_station = st;
    00366       }
    00367     }
    00368   }
    00369
    00370   return best_station;
    00371 }
    00372
    00373
    00374 void Station::GetTileArea(TileArea *ta, StationType type) const
    00375 {
    00376   switch (type) {
    00377     case STATION_RAIL:
    00378       *ta = this->train_station;
    00379       return;
    00380
    00381     case STATION_AIRPORT:
    00382       ta->tile = this->airport_tile;
    00383       ta->w    = this->Airport()->size_x;
    00384       ta->h    = this->Airport()->size_y;
    00385       return;
    00386
    00387     case STATION_TRUCK:
    00388       *ta = this->truck_station;
    00389       return;
    00390
    00391     case STATION_BUS:
    00392       *ta = this->bus_station;
    00393       return;
    00394
    00395     case STATION_DOCK:
    00396     case STATION_OILRIG:
    00397     case STATION_BUOY:
    00398       ta->tile = this->dock_tile;
    00399       break;
    00400
    00401     default: NOT_REACHED();
    00402   }
    00403
    00404   ta->w = 1;
    00405   ta->h = 1;
    00406 }
    00407
    00411 void Station::UpdateVirtCoord()
    00412 {
    00413   Point pt = RemapCoords2(TileX(this->xy) * TILE_SIZE, TileY(this->xy) * TILE_SIZE);
    00414
    00415   pt.y -= 32;
    00416   if ((this->facilities & FACIL_AIRPORT) && this->airport_type == AT_OILRIG) pt.y -= 16;
    00417
    00418   SetDParam(0, this->index);
    00419   SetDParam(1, this->facilities);
    00420   this->sign.UpdatePosition(pt.x, pt.y, STR_VIEWPORT_STATION);
    00421
    00422   SetWindowDirty(WC_STATION_VIEW, this->index);
    00423 }
    00424
    00426 void UpdateAllStationVirtCoords()
    00427 {
    00428   BaseStation *st;
    00429
    00430   FOR_ALL_BASE_STATIONS(st) {
    00431     st->UpdateVirtCoord();
    00432   }
    00433 }
    00434
    00439 static uint GetAcceptanceMask(const Station *st)
    00440 {
    00441   uint mask = 0;
    00442
    00443   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00444     if (HasBit(st->goods[i].acceptance_pickup, GoodsEntry::ACCEPTANCE)) mask |= 1 << i;
    00445   }
    00446   return mask;
    00447 }
    00448
    00452 static void ShowRejectOrAcceptNews(const Station *st, uint num_items, CargoID *cargo, StringID msg)
    00453 {
    00454   for (uint i = 0; i < num_items; i++) {
    00455     SetDParam(i + 1, CargoSpec::Get(cargo[i])->name);
    00456   }
    00457
    00458   SetDParam(0, st->index);
    00459   AddNewsItem(msg, NS_ACCEPTANCE, NR_STATION, st->index);
    00460 }
    00461
    00469 CargoArray GetProductionAroundTiles(TileIndex tile, int w, int h, int rad)
    00470 {
    00471   CargoArray produced;
    00472
    00473   int x = TileX(tile);
    00474   int y = TileY(tile);
    00475
    00476   /* expand the region by rad tiles on each side
    00477    * while making sure that we remain inside the board. */
    00478   int x2 = min(x + w + rad, MapSizeX());
    00479   int x1 = max(x - rad, 0);
    00480
    00481   int y2 = min(y + h + rad, MapSizeY());
    00482   int y1 = max(y - rad, 0);
    00483
    00484   assert(x1 < x2);
    00485   assert(y1 < y2);
    00486   assert(w > 0);
    00487   assert(h > 0);
    00488
    00489   for (int yc = y1; yc != y2; yc++) {
    00490     for (int xc = x1; xc != x2; xc++) {
    00491       TileIndex tile = TileXY(xc, yc);
    00492       AddProducedCargo(tile, produced);
    00493     }
    00494   }
    00495
    00496   return produced;
    00497 }
    00498
    00507 CargoArray GetAcceptanceAroundTiles(TileIndex tile, int w, int h, int rad, uint32 *always_accepted)
    00508 {
    00509   CargoArray acceptance;
    00510   if (always_accepted != NULL) *always_accepted = 0;
    00511
    00512   int x = TileX(tile);
    00513   int y = TileY(tile);
    00514
    00515   /* expand the region by rad tiles on each side
    00516    * while making sure that we remain inside the board. */
    00517   int x2 = min(x + w + rad, MapSizeX());
    00518   int y2 = min(y + h + rad, MapSizeY());
    00519   int x1 = max(x - rad, 0);
    00520   int y1 = max(y - rad, 0);
    00521
    00522   assert(x1 < x2);
    00523   assert(y1 < y2);
    00524   assert(w > 0);
    00525   assert(h > 0);
    00526
    00527   for (int yc = y1; yc != y2; yc++) {
    00528     for (int xc = x1; xc != x2; xc++) {
    00529       TileIndex tile = TileXY(xc, yc);
    00530       AddAcceptedCargo(tile, acceptance, always_accepted);
    00531     }
    00532   }
    00533
    00534   return acceptance;
    00535 }
    00536
    00541 void UpdateStationAcceptance(Station *st, bool show_msg)
    00542 {
    00543   /* old accepted goods types */
    00544   uint old_acc = GetAcceptanceMask(st);
    00545
    00546   /* And retrieve the acceptance. */
    00547   CargoArray acceptance;
    00548   if (!st->rect.IsEmpty()) {
    00549     acceptance = GetAcceptanceAroundTiles(
    00550       TileXY(st->rect.left, st->rect.top),
    00551       st->rect.right  - st->rect.left + 1,
    00552       st->rect.bottom - st->rect.top  + 1,
    00553       st->GetCatchmentRadius(),
    00554       &st->always_accepted
    00555     );
    00556   }
    00557
    00558   /* Adjust in case our station only accepts fewer kinds of goods */
    00559   for (CargoID i = 0; i < NUM_CARGO; i++) {
    00560     uint amt = min(acceptance[i], 15);
    00561
    00562     /* Make sure the station can accept the goods type. */
    00563     bool is_passengers = IsCargoInClass(i, CC_PASSENGERS);
    00564     if ((!is_passengers && !(st->facilities & ~FACIL_BUS_STOP)) ||
    00565         (is_passengers && !(st->facilities & ~FACIL_TRUCK_STOP))) {
    00566       amt = 0;
    00567     }
    00568
    00569     SB(st->goods[i].acceptance_pickup, GoodsEntry::ACCEPTANCE, 1, amt >= 8);
    00570   }
    00571
    00572   /* Only show a message in case the acceptance was actually changed. */
    00573   uint new_acc = GetAcceptanceMask(st);
    00574   if (old_acc == new_acc) return;
    00575
    00576   /* show a message to report that the acceptance was changed? */
    00577   if (show_msg && st->owner == _local_company && st->IsInUse()) {
    00578     /* List of accept and reject strings for different number of
    00579      * cargo types */
    00580     static const StringID accept_msg[] = {
    00581       STR_NEWS_STATION_NOW_ACCEPTS_CARGO,
    00582       STR_NEWS_STATION_NOW_ACCEPTS_CARGO_AND_CARGO,
    00583     };
    00584     static const StringID reject_msg[] = {
    00585       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO,
    00586       STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO_OR_CARGO,
    00587     };
    00588
    00589     /* Array of accepted and rejected cargo types */
    00590     CargoID accepts[2] = { CT_INVALID, CT_INVALID };
    00591     CargoID rejects[2] = { CT_INVALID, CT_INVALID };
    00592     uint num_acc = 0;
    00593     uint num_rej = 0;
    00594
    00595     /* Test each cargo type to see if its acceptange has changed */
    00596     for (CargoID i = 0; i < NUM_CARGO; i++) {
    00597       if (HasBit(new_acc, i)) {
    00598         if (!HasBit(old_acc, i) && num_acc < lengthof(accepts)) {
    00599           /* New cargo is accepted */
    00600           accepts[num_acc++] = i;
    00601         }
    00602       } else {
    00603         if (HasBit(old_acc, i) && num_rej < lengthof(rejects)) {
    00604           /* Old cargo is no longer accepted */
    00605           rejects[num_rej++] = i;
    00606         }
    00607       }
    00608     }
    00609
    00610     /* Show news message if there are any changes */
    00611     if (num_acc > 0) ShowRejectOrAcceptNews(st, num_acc, accepts, accept_msg[num_acc - 1]);
    00612     if (num_rej > 0) ShowRejectOrAcceptNews(st, num_rej, rejects, reject_msg[num_rej - 1]);
    00613   }
    00614
    00615   /* redraw the station view since acceptance changed */
    00616   SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_ACCEPTLIST);
    00617 }
    00618
    00619 static void UpdateStationSignCoord(BaseStation *st)
    00620 {
    00621   const StationRect *r = &st->rect;
    00622
    00623   if (r->IsEmpty()) return; // no tiles belong to this station
    00624
    00625   /* clamp sign coord to be inside the station rect */
    00626   st->xy = TileXY(ClampU(TileX(st->xy), r->left, r->right), ClampU(TileY(st->xy), r->top, r->bottom));
    00627   st->UpdateVirtCoord();
    00628 }
    00629
    00635 static void DeleteStationIfEmpty(BaseStation *st)
    00636 {
    00637   if (!st->IsInUse()) {
    00638     st->delete_ctr = 0;
    00639     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    00640   }
    00641   /* station remains but it probably lost some parts - station sign should stay in the station boundaries */
    00642   UpdateStationSignCoord(st);
    00643 }
    00644
    00645 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags);
    00646
    00658 CommandCost CheckFlatLandBelow(TileIndex tile, uint w, uint h, DoCommandFlag flags, uint invalid_dirs, StationID *station, bool check_clear = true, RailType rt = INVALID_RAILTYPE)
    00659 {
    00660   CommandCost cost(EXPENSES_CONSTRUCTION);
    00661   int allowed_z = -1;
    00662
    00663   TILE_LOOP(tile_cur, w, h, tile) {
    00664     if (MayHaveBridgeAbove(tile_cur) && IsBridgeAbove(tile_cur)) {
    00665       return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    00666     }
    00667
    00668     if (!EnsureNoVehicleOnGround(tile_cur)) return CMD_ERROR;
    00669
    00670     uint z;
    00671     Slope tileh = GetTileSlope(tile_cur, &z);
    00672
    00673     /* Prohibit building if
    00674      *   1) The tile is "steep" (i.e. stretches two height levels)
    00675      *   2) The tile is non-flat and the build_on_slopes switch is disabled
    00676      */
    00677     if (IsSteepSlope(tileh) ||
    00678         ((!_settings_game.construction.build_on_slopes) && tileh != SLOPE_FLAT)) {
    00679       return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00680     }
    00681
    00682     int flat_z = z;
    00683     if (tileh != SLOPE_FLAT) {
    00684       /* need to check so the entrance to the station is not pointing at a slope.
    00685        * This must be valid for all station tiles, as the user can remove single station tiles. */
    00686       if ((HasBit(invalid_dirs, DIAGDIR_NE) && !(tileh & SLOPE_NE)) ||
    00687           (HasBit(invalid_dirs, DIAGDIR_SE) && !(tileh & SLOPE_SE)) ||
    00688           (HasBit(invalid_dirs, DIAGDIR_SW) && !(tileh & SLOPE_SW)) ||
    00689           (HasBit(invalid_dirs, DIAGDIR_NW) && !(tileh & SLOPE_NW))) {
    00690         return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00691       }
    00692       cost.AddCost(_price[PR_BUILD_FOUNDATION]);
    00693       flat_z += TILE_HEIGHT;
    00694     }
    00695
    00696     /* get corresponding flat level and make sure that all parts of the station have the same level. */
    00697     if (allowed_z == -1) {
    00698       /* first tile */
    00699       allowed_z = flat_z;
    00700     } else if (allowed_z != flat_z) {
    00701       return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
    00702     }
    00703
    00704     /* if station is set, then we have special handling to allow building on top of already existing stations.
    00705      * so station points to INVALID_STATION if we can build on any station.
    00706      * Or it points to a station if we're only allowed to build on exactly that station. */
    00707     if (station != NULL && IsTileType(tile_cur, MP_STATION)) {
    00708       if (!IsRailStation(tile_cur)) {
    00709         return ClearTile_Station(tile_cur, DC_AUTO); // get error message
    00710       } else {
    00711         StationID st = GetStationIndex(tile_cur);
    00712         if (*station == INVALID_STATION) {
    00713           *station = st;
    00714         } else if (*station != st) {
    00715           return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
    00716         }
    00717       }
    00718     } else if (check_clear) {
    00719       /* Rail type is only valid when building a railway station; in station to
    00720        * build isn't a rail station it's INVALID_RAILTYPE. */
    00721       if (rt != INVALID_RAILTYPE &&
    00722           IsPlainRailTile(tile_cur) && !HasSignals(tile_cur) &&
    00723           HasPowerOnRail(GetRailType(tile_cur), rt)) {
    00724         /* Allow overbuilding if the tile:
    00725          *  - has rail, but no signals
    00726          *  - it has exactly one track
    00727          *  - the track is in line with the station
    00728          *  - the current rail type has power on the to-be-built type (e.g. convert normal rail to el rail)
    00729          */
    00730         TrackBits tracks = GetTrackBits(tile_cur);
    00731         Track track = RemoveFirstTrack(&tracks);
    00732         Track expected_track = HasBit(invalid_dirs, DIAGDIR_NE) ? TRACK_X : TRACK_Y;
    00733
    00734         if (tracks == TRACK_BIT_NONE && track == expected_track) {
    00735           CommandCost ret = DoCommand(tile_cur, 0, track, flags, CMD_REMOVE_SINGLE_RAIL);
    00736           if (CmdFailed(ret)) return ret;
    00737           cost.AddCost(ret);
    00738           /* With flags & ~DC_EXEC CmdLandscapeClear would fail since the rail still exists */
    00739           continue;
    00740         }
    00741       }
    00742       CommandCost ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    00743       if (CmdFailed(ret)) return ret;
    00744       cost.AddCost(ret);
    00745     }
    00746   }
    00747
    00748   return cost;
    00749 }
    00750
    00758 bool CanExpandRailStation(const BaseStation *st, TileArea &new_ta, Axis axis)
    00759 {
    00760   TileArea cur_ta = st->train_station;
    00761
    00762   if (_settings_game.station.nonuniform_stations) {
    00763     /* determine new size of train station region.. */
    00764     int x = min(TileX(cur_ta.tile), TileX(new_ta.tile));
    00765     int y = min(TileY(cur_ta.tile), TileY(new_ta.tile));
    00766     new_ta.w = max(TileX(cur_ta.tile) + cur_ta.w, TileX(new_ta.tile) + new_ta.w) - x;
    00767     new_ta.h = max(TileY(cur_ta.tile) + cur_ta.h, TileY(new_ta.tile) + new_ta.h) - y;
    00768     new_ta.tile = TileXY(x, y);
    00769   } else {
    00770     /* do not allow modifying non-uniform stations,
    00771      * the uniform-stations code wouldn't handle it well */
    00772     TILE_LOOP(t, cur_ta.w, cur_ta.h, cur_ta.tile) {
    00773       if (!st->TileBelongsToRailStation(t)) { // there may be adjoined station
    00774         _error_message = STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED;
    00775         return false;
    00776       }
    00777     }
    00778
    00779     /* check so the orientation is the same */
    00780     if (GetRailStationAxis(cur_ta.tile) != axis) {
    00781       _error_message = STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED;
    00782       return false;
    00783     }
    00784
    00785     /* check if the new station adjoins the old station in either direction */
    00786     if (cur_ta.w == new_ta.w && cur_ta.tile == new_ta.tile + TileDiffXY(0, new_ta.h)) {
    00787       /* above */
    00788       new_ta.h += cur_ta.h;
    00789     } else if (cur_ta.w == new_ta.w && cur_ta.tile == new_ta.tile - TileDiffXY(0, cur_ta.h)) {
    00790       /* below */
    00791       new_ta.tile = cur_ta.tile;
    00792       new_ta.h += new_ta.h;
    00793     } else if (cur_ta.h == new_ta.h && cur_ta.tile == new_ta.tile + TileDiffXY(new_ta.w, 0)) {
    00794       /* to the left */
    00795       new_ta.w += cur_ta.w;
    00796     } else if (cur_ta.h == new_ta.h && cur_ta.tile == new_ta.tile - TileDiffXY(cur_ta.w, 0)) {
    00797       /* to the right */
    00798       new_ta.tile = cur_ta.tile;
    00799       new_ta.w += cur_ta.w;
    00800     } else {
    00801       _error_message = STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED;
    00802       return false;
    00803     }
    00804   }
    00805   /* make sure the final size is not too big. */
    00806   if (new_ta.w > _settings_game.station.station_spread || new_ta.h > _settings_game.station.station_spread) {
    00807     _error_message = STR_ERROR_STATION_TOO_SPREAD_OUT;
    00808     return false;
    00809   }
    00810
    00811   return true;
    00812 }
    00813
    00814 static inline byte *CreateSingle(byte *layout, int n)
    00815 {
    00816   int i = n;
    00817   do *layout++ = 0; while (--i);
    00818   layout[((n - 1) >> 1) - n] = 2;
    00819   return layout;
    00820 }
    00821
    00822 static inline byte *CreateMulti(byte *layout, int n, byte b)
    00823 {
    00824   int i = n;
    00825   do *layout++ = b; while (--i);
    00826   if (n > 4) {
    00827     layout[0 - n] = 0;
    00828     layout[n - 1 - n] = 0;
    00829   }
    00830   return layout;
    00831 }
    00832
    00833 void GetStationLayout(byte *layout, int numtracks, int plat_len, const StationSpec *statspec)
    00834 {
    00835   if (statspec != NULL && statspec->lengths >= plat_len &&
    00836       statspec->platforms[plat_len - 1] >= numtracks &&
    00837       statspec->layouts[plat_len - 1][numtracks - 1]) {
    00838     /* Custom layout defined, follow it. */
    00839     memcpy(layout, statspec->layouts[plat_len - 1][numtracks - 1],
    00840       plat_len * numtracks);
    00841     return;
    00842   }
    00843
    00844   if (plat_len == 1) {
    00845     CreateSingle(layout, numtracks);
    00846   } else {
    00847     if (numtracks & 1) layout = CreateSingle(layout, plat_len);
    00848     numtracks >>= 1;
    00849
    00850     while (--numtracks >= 0) {
    00851       layout = CreateMulti(layout, plat_len, 4);
    00852       layout = CreateMulti(layout, plat_len, 6);
    00853     }
    00854   }
    00855 }
    00856
    00868 template <class T, StringID error_message>
    00869 CommandCost FindJoiningBaseStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, T **st)
    00870 {
    00871   assert(*st == NULL);
    00872   bool check_surrounding = true;
    00873
    00874   if (_settings_game.station.adjacent_stations) {
    00875     if (existing_station != INVALID_STATION) {
    00876       if (adjacent && existing_station != station_to_join) {
    00877         /* You can't build an adjacent station over the top of one that
    00878          * already exists. */
    00879         return_cmd_error(error_message);
    00880       } else {
    00881         /* Extend the current station, and don't check whether it will
    00882          * be near any other stations. */
    00883         *st = T::GetIfValid(existing_station);
    00884         check_surrounding = (*st == NULL);
    00885       }
    00886     } else {
    00887       /* There's no station here. Don't check the tiles surrounding this
    00888        * one if the company wanted to build an adjacent station. */
    00889       if (adjacent) check_surrounding = false;
    00890     }
    00891   }
    00892
    00893   if (check_surrounding) {
    00894     /* Make sure there are no similar stations around us. */
    00895     if (!GetStationAround(ta, existing_station, st)) return CMD_ERROR;
    00896   }
    00897
    00898   /* Distant join */
    00899   if (*st == NULL && station_to_join != INVALID_STATION) *st = T::GetIfValid(station_to_join);
    00900
    00901   return CommandCost();;
    00902 }
    00903
    00913 static CommandCost FindJoiningStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
    00914 {
    00915   return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_RAILWAY_STATION_FIRST>(existing_station, station_to_join, adjacent, ta, st);
    00916 }
    00917
    00927 CommandCost FindJoiningWaypoint(StationID existing_waypoint, StationID waypoint_to_join, bool adjacent, TileArea ta, Waypoint **wp)
    00928 {
    00929   return FindJoiningBaseStation<Waypoint, STR_ERROR_MUST_REMOVE_RAILWAYPOINT_FIRST>(existing_waypoint, waypoint_to_join, adjacent, ta, wp);
    00930 }
    00931
    00949 CommandCost CmdBuildRailStation(TileIndex tile_org, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    00950 {
    00951   /* Unpack parameters */
    00952   RailType rt    = (RailType)GB(p1, 0, 4);
    00953   Axis axis      = Extract<Axis, 4>(p1);
    00954   byte numtracks = GB(p1,  8, 8);
    00955   byte plat_len  = GB(p1, 16, 8);
    00956   bool adjacent  = HasBit(p1, 24);
    00957
    00958   StationClassID spec_class = (StationClassID)GB(p2, 0, 8);
    00959   byte spec_index           = GB(p2, 8, 8);
    00960   StationID station_to_join = GB(p2, 16, 16);
    00961
    00962   /* Does the authority allow this? */
    00963   if (!CheckIfAuthorityAllowsNewStation(tile_org, flags)) return CMD_ERROR;
    00964   if (!ValParamRailtype(rt)) return CMD_ERROR;
    00965
    00966   /* Check if the given station class is valid */
    00967   if ((uint)spec_class >= GetNumStationClasses()) return CMD_ERROR;
    00968   if (spec_index >= GetNumCustomStations(spec_class)) return CMD_ERROR;
    00969   if (plat_len == 0 || numtracks == 0) return CMD_ERROR;
    00970
    00971   int w_org, h_org;
    00972   if (axis == AXIS_X) {
    00973     w_org = plat_len;
    00974     h_org = numtracks;
    00975   } else {
    00976     h_org = plat_len;
    00977     w_org = numtracks;
    00978   }
    00979
    00980   bool reuse = (station_to_join != NEW_STATION);
    00981   if (!reuse) station_to_join = INVALID_STATION;
    00982   bool distant_join = (station_to_join != INVALID_STATION);
    00983
    00984   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    00985
    00986   if (h_org > _settings_game.station.station_spread || w_org > _settings_game.station.station_spread) return CMD_ERROR;
    00987
    00988   /* these values are those that will be stored in train_tile and station_platforms */
    00989   TileArea new_location(tile_org, w_org, h_org);
    00990
    00991   /* Make sure the area below consists of clear tiles. (OR tiles belonging to a certain rail station) */
    00992   StationID est = INVALID_STATION;
    00993   /* If DC_EXEC is in flag, do not want to pass it to CheckFlatLandBelow, because of a nice bug
    00994    * for detail info, see:
    00995    * https://sourceforge.net/tracker/index.php?func=detail&aid=1029064&group_id=103924&atid=636365 */
    00996   CommandCost ret = CheckFlatLandBelow(tile_org, w_org, h_org, flags & ~DC_EXEC, 5 << axis, _settings_game.station.nonuniform_stations ? &est : NULL, true, rt);
    00997   if (CmdFailed(ret)) return ret;
    00998   CommandCost cost(EXPENSES_CONSTRUCTION, ret.GetCost() + (numtracks * _price[PR_BUILD_STATION_RAIL] + _price[PR_BUILD_STATION_RAIL_LENGTH]) * plat_len);
    00999
    01000   Station *st = NULL;
    01001   ret = FindJoiningStation(est, station_to_join, adjacent, new_location, &st);
    01002   if (CmdFailed(ret)) return ret;
    01003
    01004   /* See if there is a deleted station close to us. */
    01005   if (st == NULL && reuse) st = GetClosestDeletedStation(tile_org);
    01006
    01007   if (st != NULL) {
    01008     /* Reuse an existing station. */
    01009     if (st->owner != _current_company)
    01010       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01011
    01012     if (st->train_station.tile != INVALID_TILE) {
    01013       /* check if we want to expanding an already existing station? */
    01014       if (!_settings_game.station.join_stations)
    01015         return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_RAILROAD);
    01016       if (!CanExpandRailStation(st, new_location, axis))
    01017         return CMD_ERROR;
    01018     }
    01019
    01020     /* XXX can't we pack this in the "else" part of the if above? */
    01021     if (!st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TEST)) return CMD_ERROR;
    01022   } else {
    01023     /* allocate and initialize new station */
    01024     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01025
    01026     if (flags & DC_EXEC) {
    01027       st = new Station(tile_org);
    01028
    01029       st->town = ClosestTownFromTile(tile_org, UINT_MAX);
    01030       st->string_id = GenerateStationName(st, tile_org, STATIONNAMING_RAIL);
    01031
    01032       if (Company::IsValidID(_current_company)) {
    01033         SetBit(st->town->have_ratings, _current_company);
    01034       }
    01035     }
    01036   }
    01037
    01038   /* Check if we can allocate a custom stationspec to this station */
    01039   const StationSpec *statspec = GetCustomStationSpec(spec_class, spec_index);
    01040   int specindex = AllocateSpecToStation(statspec, st, (flags & DC_EXEC) != 0);
    01041   if (specindex == -1) return_cmd_error(STR_ERROR_TOO_MANY_STATION_SPECS);
    01042
    01043   if (statspec != NULL) {
    01044     /* Perform NewStation checks */
    01045
    01046     /* Check if the station size is permitted */
    01047     if (HasBit(statspec->disallowed_platforms, numtracks - 1) || HasBit(statspec->disallowed_lengths, plat_len - 1)) {
    01048       return CMD_ERROR;
    01049     }
    01050
    01051     /* Check if the station is buildable */
    01052     if (HasBit(statspec->callback_mask, CBM_STATION_AVAIL) && GB(GetStationCallback(CBID_STATION_AVAILABILITY, 0, 0, statspec, NULL, INVALID_TILE), 0, 8) == 0) {
    01053       return CMD_ERROR;
    01054     }
    01055   }
    01056
    01057   if (flags & DC_EXEC) {
    01058     TileIndexDiff tile_delta;
    01059     byte *layout_ptr;
    01060     byte numtracks_orig;
    01061     Track track;
    01062
    01063     /* Now really clear the land below the station
    01064      * It should never return CMD_ERROR.. but you never know ;)
    01065      * (a bit strange function name for it, but it really does clear the land, when DC_EXEC is in flags) */
    01066     ret = CheckFlatLandBelow(tile_org, w_org, h_org, flags, 5 << axis, _settings_game.station.nonuniform_stations ? &est : NULL, true, rt);
    01067     if (CmdFailed(ret)) return ret;
    01068
    01069     st->train_station = new_location;
    01070     st->AddFacility(FACIL_TRAIN, new_location.tile);
    01071
    01072     st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TRY);
    01073
    01074     if (statspec != NULL) {
    01075       /* Include this station spec's animation trigger bitmask
    01076        * in the station's cached copy. */
    01077       st->cached_anim_triggers |= statspec->anim_triggers;
    01078     }
    01079
    01080     tile_delta = (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
    01081     track = AxisToTrack(axis);
    01082
    01083     layout_ptr = AllocaM(byte, numtracks * plat_len);
    01084     GetStationLayout(layout_ptr, numtracks, plat_len, statspec);
    01085
    01086     numtracks_orig = numtracks;
    01087
    01088     SmallVector<Train*, 4> affected_vehicles;
    01089     do {
    01090       TileIndex tile = tile_org;
    01091       int w = plat_len;
    01092       do {
    01093         byte layout = *layout_ptr++;
    01094         if (IsRailStationTile(tile) && HasStationReservation(tile)) {
    01095           /* Check for trains having a reservation for this tile. */
    01096           Train *v = GetTrainForReservation(tile, AxisToTrack(GetRailStationAxis(tile)));
    01097           if (v != NULL) {
    01098             FreeTrainTrackReservation(v);
    01099             *affected_vehicles.Append() = v;
    01100             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01101             for (; v->Next() != NULL; v = v->Next()) { }
    01102             if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), false);
    01103           }
    01104         }
    01105
    01106         /* Remove animation if overbuilding */
    01107         DeleteAnimatedTile(tile);
    01108         byte old_specindex = IsTileType(tile, MP_STATION) ? GetCustomStationSpecIndex(tile) : 0;
    01109         MakeRailStation(tile, st->owner, st->index, axis, layout & ~1, rt);
    01110         /* Free the spec if we overbuild something */
    01111         DeallocateSpecFromStation(st, old_specindex);
    01112
    01113         SetCustomStationSpecIndex(tile, specindex);
    01114         SetStationTileRandomBits(tile, GB(Random(), 0, 4));
    01115         SetStationAnimationFrame(tile, 0);
    01116
    01117         if (statspec != NULL) {
    01118           /* Use a fixed axis for GetPlatformInfo as our platforms / numtracks are always the right way around */
    01119           uint32 platinfo = GetPlatformInfo(AXIS_X, 0, plat_len, numtracks_orig, plat_len - w, numtracks_orig - numtracks, false);
    01120
    01121           /* As the station is not yet completely finished, the station does not yet exist. */
    01122           uint16 callback = GetStationCallback(CBID_STATION_TILE_LAYOUT, platinfo, 0, statspec, NULL, tile);
    01123           if (callback != CALLBACK_FAILED && callback < 8) SetStationGfx(tile, (callback & ~1) + axis);
    01124
    01125           /* Trigger station animation -- after building? */
    01126           StationAnimationTrigger(st, tile, STAT_ANIM_BUILT);
    01127         }
    01128
    01129         tile += tile_delta;
    01130       } while (--w);
    01131       AddTrackToSignalBuffer(tile_org, track, _current_company);
    01132       YapfNotifyTrackLayoutChange(tile_org, track);
    01133       tile_org += tile_delta ^ TileDiffXY(1, 1); // perpendicular to tile_delta
    01134     } while (--numtracks);
    01135
    01136     for (uint i = 0; i < affected_vehicles.Length(); ++i) {
    01137       /* Restore reservations of trains. */
    01138       Train *v = affected_vehicles[i];
    01139       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01140       TryPathReserve(v, true, true);
    01141       for (; v->Next() != NULL; v = v->Next()) { }
    01142       if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01143     }
    01144
    01145     st->MarkTilesDirty(false);
    01146     st->UpdateVirtCoord();
    01147     UpdateStationAcceptance(st, false);
    01148     st->RecomputeIndustriesNear();
    01149     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01150     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01151     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01152   }
    01153
    01154   return cost;
    01155 }
    01156
    01157 static void MakeRailStationAreaSmaller(BaseStation *st)
    01158 {
    01159   TileArea ta = st->train_station;
    01160
    01161 restart:
    01162
    01163   /* too small? */
    01164   if (ta.w != 0 && ta.h != 0) {
    01165     /* check the left side, x = constant, y changes */
    01166     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(0, i));) {
    01167       /* the left side is unused? */
    01168       if (++i == ta.h) {
    01169         ta.tile += TileDiffXY(1, 0);
    01170         ta.w--;
    01171         goto restart;
    01172       }
    01173     }
    01174
    01175     /* check the right side, x = constant, y changes */
    01176     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(ta.w - 1, i));) {
    01177       /* the right side is unused? */
    01178       if (++i == ta.h) {
    01179         ta.w--;
    01180         goto restart;
    01181       }
    01182     }
    01183
    01184     /* check the upper side, y = constant, x changes */
    01185     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, 0));) {
    01186       /* the left side is unused? */
    01187       if (++i == ta.w) {
    01188         ta.tile += TileDiffXY(0, 1);
    01189         ta.h--;
    01190         goto restart;
    01191       }
    01192     }
    01193
    01194     /* check the lower side, y = constant, x changes */
    01195     for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, ta.h - 1));) {
    01196       /* the left side is unused? */
    01197       if (++i == ta.w) {
    01198         ta.h--;
    01199         goto restart;
    01200       }
    01201     }
    01202   } else {
    01203     ta.Clear();
    01204   }
    01205
    01206   st->train_station = ta;
    01207 }
    01208
    01219 template <class T>
    01220 CommandCost RemoveFromRailBaseStation(TileArea ta, SmallVector<T *, 4> &affected_stations, DoCommandFlag flags, Money removal_cost, bool keep_rail)
    01221 {
    01222   /* Count of the number of tiles removed */
    01223   int quantity = 0;
    01224   CommandCost total_cost(EXPENSES_CONSTRUCTION);
    01225
    01226   /* Do the action for every tile into the area */
    01227   TILE_LOOP(tile, ta.w, ta.h, ta.tile) {
    01228     /* Make sure the specified tile is a rail station */
    01229     if (!HasStationTileRail(tile)) continue;
    01230
    01231     /* If there is a vehicle on ground, do not allow to remove (flood) the tile */
    01232     if (!EnsureNoVehicleOnGround(tile)) continue;
    01233
    01234     /* Check ownership of station */
    01235     T *st = T::GetByTile(tile);
    01236     if (st == NULL) continue;
    01237     if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) continue;
    01238
    01239     /* Do not allow removing from stations if non-uniform stations are not enabled
    01240      * The check must be here to give correct error message
    01241      */
    01242     if (!_settings_game.station.nonuniform_stations) return_cmd_error(STR_ERROR_NONUNIFORM_STATIONS_DISALLOWED);
    01243
    01244     /* If we reached here, the tile is valid so increase the quantity of tiles we will remove */
    01245     quantity++;
    01246
    01247     if (flags & DC_EXEC) {
    01248       /* read variables before the station tile is removed */
    01249       uint specindex = GetCustomStationSpecIndex(tile);
    01250       Track track = GetRailStationTrack(tile);
    01251       Owner owner = GetTileOwner(tile);
    01252       RailType rt = GetRailType(tile);
    01253       Train *v = NULL;
    01254
    01255       if (HasStationReservation(tile)) {
    01256         v = GetTrainForReservation(tile, track);
    01257         if (v != NULL) {
    01258           /* Free train reservation. */
    01259           FreeTrainTrackReservation(v);
    01260           if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
    01261           Vehicle *temp = v;
    01262           for (; temp->Next() != NULL; temp = temp->Next()) { }
    01263           if (IsRailStationTile(temp->tile)) SetRailStationPlatformReservation(temp->tile, TrackdirToExitdir(ReverseTrackdir(temp->GetVehicleTrackdir())), false);
    01264         }
    01265       }
    01266
    01267       DoClearSquare(tile);
    01268       if (keep_rail) MakeRailNormal(tile, owner, TrackToTrackBits(track), rt);
    01269
    01270       st->rect.AfterRemoveTile(st, tile);
    01271       AddTrackToSignalBuffer(tile, track, owner);
    01272       YapfNotifyTrackLayoutChange(tile, track);
    01273
    01274       DeallocateSpecFromStation(st, specindex);
    01275
    01276       affected_stations.Include(st);
    01277
    01278       if (v != NULL) {
    01279         /* Restore station reservation. */
    01280         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
    01281         TryPathReserve(v, true, true);
    01282         for (; v->Next() != NULL; v = v->Next()) { }
    01283         if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
    01284       }
    01285     }
    01286     if (keep_rail) {
    01287       /* Don't refund the 'steel' of the track! */
    01288       total_cost.AddCost(-_price[PR_CLEAR_RAIL]);
    01289     }
    01290   }
    01291
    01292   if (quantity == 0) return CMD_ERROR;
    01293
    01294   for (T **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01295     T *st = *stp;
    01296
    01297     /* now we need to make the "spanned" area of the railway station smaller
    01298      * if we deleted something at the edges.
    01299      * we also need to adjust train_tile. */
    01300     MakeRailStationAreaSmaller(st);
    01301     UpdateStationSignCoord(st);
    01302
    01303     /* if we deleted the whole station, delete the train facility. */
    01304     if (st->train_station.tile == INVALID_TILE) {
    01305       st->facilities &= ~FACIL_TRAIN;
    01306       SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01307       st->UpdateVirtCoord();
    01308       DeleteStationIfEmpty(st);
    01309     }
    01310   }
    01311
    01312   total_cost.AddCost(quantity * removal_cost);
    01313   return total_cost;
    01314 }
    01315
    01326 CommandCost CmdRemoveFromRailStation(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01327 {
    01328   TileIndex end = p1 == 0 ? start : p1;
    01329   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01330
    01331   TileArea ta(start, end);
    01332   SmallVector<Station *, 4> affected_stations;
    01333
    01334   CommandCost ret = RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_STATION_RAIL], HasBit(p2, 0));
    01335   if (ret.Failed()) return ret;
    01336
    01337   /* Do all station specific functions here. */
    01338   for (Station **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
    01339     Station *st = *stp;
    01340
    01341     if (st->train_station.tile == INVALID_TILE) SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01342     st->MarkTilesDirty(false);
    01343     st->RecomputeIndustriesNear();
    01344   }
    01345
    01346   /* Now apply the rail cost to the number that we deleted */
    01347   return ret;
    01348 }
    01349
    01360 CommandCost CmdRemoveFromRailWaypoint(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01361 {
    01362   TileIndex end = p1 == 0 ? start : p1;
    01363   if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
    01364
    01365   TileArea ta(start, end);
    01366   SmallVector<Waypoint *, 4> affected_stations;
    01367
    01368   return RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_WAYPOINT_RAIL], HasBit(p2, 0));
    01369 }
    01370
    01371
    01379 template <class T>
    01380 CommandCost RemoveRailStation(T *st, DoCommandFlag flags)
    01381 {
    01382   /* Current company owns the station? */
    01383   if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) return CMD_ERROR;
    01384
    01385   /* determine width and height of platforms */
    01386   TileArea ta = st->train_station;
    01387
    01388   assert(ta.w != 0 && ta.h != 0);
    01389
    01390   CommandCost cost(EXPENSES_CONSTRUCTION);
    01391   /* clear all areas of the station */
    01392   TILE_LOOP(tile, ta.w, ta.h, ta.tile) {
    01393     /* for nonuniform stations, only remove tiles that are actually train station tiles */
    01394     if (!st->TileBelongsToRailStation(tile)) continue;
    01395
    01396     if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
    01397
    01398     cost.AddCost(_price[PR_CLEAR_STATION_RAIL]);
    01399     if (flags & DC_EXEC) {
    01400       /* read variables before the station tile is removed */
    01401       Track track = GetRailStationTrack(tile);
    01402       Owner owner = GetTileOwner(tile); // _current_company can be OWNER_WATER
    01403       Train *v = NULL;
    01404       if (HasStationReservation(tile)) {
    01405         v = GetTrainForReservation(tile, track);
    01406         if (v != NULL) FreeTrainTrackReservation(v);
    01407       }
    01408       DoClearSquare(tile);
    01409       AddTrackToSignalBuffer(tile, track, owner);
    01410       YapfNotifyTrackLayoutChange(tile, track);
    01411       if (v != NULL) TryPathReserve(v, true);
    01412     }
    01413   }
    01414
    01415   if (flags & DC_EXEC) {
    01416     st->rect.AfterRemoveRect(st, st->train_station.tile, st->train_station.w, st->train_station.h);
    01417
    01418     st->train_station.Clear();
    01419
    01420     st->facilities &= ~FACIL_TRAIN;
    01421
    01422     free(st->speclist);
    01423     st->num_specs = 0;
    01424     st->speclist  = NULL;
    01425     st->cached_anim_triggers = 0;
    01426
    01427     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_TRAINS);
    01428     st->UpdateVirtCoord();
    01429     DeleteStationIfEmpty(st);
    01430   }
    01431
    01432   return cost;
    01433 }
    01434
    01441 static CommandCost RemoveRailStation(TileIndex tile, DoCommandFlag flags)
    01442 {
    01443   /* if there is flooding and non-uniform stations are enabled, remove platforms tile by tile */
    01444   if (_current_company == OWNER_WATER && _settings_game.station.nonuniform_stations) {
    01445     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_STATION);
    01446   }
    01447
    01448   Station *st = Station::GetByTile(tile);
    01449   CommandCost cost = RemoveRailStation(st, flags);
    01450
    01451   if (flags & DC_EXEC) st->RecomputeIndustriesNear();
    01452
    01453   return cost;
    01454 }
    01455
    01462 static CommandCost RemoveRailWaypoint(TileIndex tile, DoCommandFlag flags)
    01463 {
    01464   /* if there is flooding and non-uniform stations are enabled, remove waypoints tile by tile */
    01465   if (_current_company == OWNER_WATER && _settings_game.station.nonuniform_stations) {
    01466     return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_WAYPOINT);
    01467   }
    01468
    01469   return RemoveRailStation(Waypoint::GetByTile(tile), flags);
    01470 }
    01471
    01472
    01478 static RoadStop **FindRoadStopSpot(bool truck_station, Station *st)
    01479 {
    01480   RoadStop **primary_stop = (truck_station) ? &st->truck_stops : &st->bus_stops;
    01481
    01482   if (*primary_stop == NULL) {
    01483     /* we have no roadstop of the type yet, so write a "primary stop" */
    01484     return primary_stop;
    01485   } else {
    01486     /* there are stops already, so append to the end of the list */
    01487     RoadStop *stop = *primary_stop;
    01488     while (stop->next != NULL) stop = stop->next;
    01489     return &stop->next;
    01490   }
    01491 }
    01492
    01505 CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01506 {
    01507   bool type = HasBit(p2, 0);
    01508   bool is_drive_through = HasBit(p2, 1);
    01509   bool build_over_road  = is_drive_through && IsNormalRoadTile(tile);
    01510   RoadTypes rts = (RoadTypes)GB(p2, 2, 2);
    01511   StationID station_to_join = GB(p2, 16, 16);
    01512   bool reuse = (station_to_join != NEW_STATION);
    01513   if (!reuse) station_to_join = INVALID_STATION;
    01514   bool distant_join = (station_to_join != INVALID_STATION);
    01515   Owner tram_owner = _current_company;
    01516   Owner road_owner = _current_company;
    01517
    01518   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01519
    01520   if (!AreValidRoadTypes(rts) || !HasRoadTypesAvail(_current_company, rts)) return CMD_ERROR;
    01521
    01522   /* Trams only have drive through stops */
    01523   if (!is_drive_through && HasBit(rts, ROADTYPE_TRAM)) return CMD_ERROR;
    01524
    01525   /* Saveguard the parameters */
    01526   if (!IsValidDiagDirection((DiagDirection)p1)) return CMD_ERROR;
    01527   /* If it is a drive-through stop check for valid axis */
    01528   if (is_drive_through && !IsValidAxis((Axis)p1)) return CMD_ERROR;
    01529   /* Road bits in the wrong direction */
    01530   if (build_over_road && (GetAllRoadBits(tile) & ((Axis)p1 == AXIS_X ? ROAD_Y : ROAD_X)) != 0) return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
    01531
    01532   if (!CheckIfAuthorityAllowsNewStation(tile, flags)) return CMD_ERROR;
    01533
    01534   RoadTypes cur_rts = IsNormalRoadTile(tile) ? GetRoadTypes(tile) : ROADTYPES_NONE;
    01535   uint num_roadbits = 0;
    01536   /* Not allowed to build over this road */
    01537   if (build_over_road) {
    01538     /* there is a road, check if we can build road+tram stop over it */
    01539     if (HasBit(cur_rts, ROADTYPE_ROAD)) {
    01540       road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    01541       if (road_owner == OWNER_TOWN) {
    01542         if (!_settings_game.construction.road_stop_on_town_road) return_cmd_error(STR_ERROR_DRIVE_THROUGH_ON_TOWN_ROAD);
    01543       } else if (!_settings_game.construction.road_stop_on_competitor_road && road_owner != OWNER_NONE && !CheckOwnership(road_owner)) {
    01544         return CMD_ERROR;
    01545       }
    01546       num_roadbits += CountBits(GetRoadBits(tile, ROADTYPE_ROAD));
    01547     }
    01548
    01549     /* there is a tram, check if we can build road+tram stop over it */
    01550     if (HasBit(cur_rts, ROADTYPE_TRAM)) {
    01551       tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    01552       if (!_settings_game.construction.road_stop_on_competitor_road && tram_owner != OWNER_NONE && !CheckOwnership(tram_owner)) {
    01553         return CMD_ERROR;
    01554       }
    01555       num_roadbits += CountBits(GetRoadBits(tile, ROADTYPE_TRAM));
    01556     }
    01557
    01558     /* Don't allow building the roadstop when vehicles are already driving on it */
    01559     if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
    01560
    01561     /* Do not remove roadtypes! */
    01562     rts |= cur_rts;
    01563   }
    01564
    01565   CommandCost cost = CheckFlatLandBelow(tile, 1, 1, flags, is_drive_through ? 5 << p1 : 1 << p1, NULL, !build_over_road);
    01566   if (CmdFailed(cost)) return cost;
    01567   uint roadbits_to_build = CountBits(rts) * 2 - num_roadbits;
    01568   cost.AddCost(_price[PR_BUILD_ROAD] * roadbits_to_build);
    01569
    01570   Station *st = NULL;
    01571   CommandCost ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 5), TileArea(tile, 1, 1), &st);
    01572   if (CmdFailed(ret)) return ret;
    01573
    01574   /* Find a deleted station close to us */
    01575   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    01576
    01577   /* give us a road stop in the list, and check if something went wrong */
    01578   if (!RoadStop::CanAllocateItem()) return_cmd_error(type ? STR_ERROR_TOO_MANY_TRUCK_STOPS : STR_ERROR_TOO_MANY_BUS_STOPS);
    01579
    01580   if (st != NULL) {
    01581     if (st->owner != _current_company) {
    01582       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01583     }
    01584
    01585     if (!st->rect.BeforeAddTile(tile, StationRect::ADD_TEST)) return CMD_ERROR;
    01586   } else {
    01587     /* allocate and initialize new station */
    01588     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01589
    01590     if (flags & DC_EXEC) {
    01591       st = new Station(tile);
    01592
    01593       st->town = ClosestTownFromTile(tile, UINT_MAX);
    01594       st->string_id = GenerateStationName(st, tile, STATIONNAMING_ROAD);
    01595
    01596       if (Company::IsValidID(_current_company)) {
    01597         SetBit(st->town->have_ratings, _current_company);
    01598       }
    01599     }
    01600   }
    01601
    01602   cost.AddCost(_price[type ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
    01603
    01604   if (flags & DC_EXEC) {
    01605     RoadStop *road_stop = new RoadStop(tile);
    01606     /* Insert into linked list of RoadStops */
    01607     RoadStop **currstop = FindRoadStopSpot(type, st);
    01608     *currstop = road_stop;
    01609
    01610     if (type) {
    01611       st->truck_station.Add(tile);
    01612     } else {
    01613       st->bus_station.Add(tile);
    01614     }
    01615
    01616     /* initialize an empty station */
    01617     st->AddFacility((type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, tile);
    01618
    01619     st->rect.BeforeAddTile(tile, StationRect::ADD_TRY);
    01620
    01621     RoadStopType rs_type = type ? ROADSTOP_TRUCK : ROADSTOP_BUS;
    01622     if (is_drive_through) {
    01623       MakeDriveThroughRoadStop(tile, st->owner, road_owner, tram_owner, st->index, rs_type, rts, (Axis)p1);
    01624       road_stop->MakeDriveThrough();
    01625     } else {
    01626       MakeRoadStop(tile, st->owner, st->index, rs_type, rts, (DiagDirection)p1);
    01627     }
    01628
    01629     st->UpdateVirtCoord();
    01630     UpdateStationAcceptance(st, false);
    01631     st->RecomputeIndustriesNear();
    01632     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    01633     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    01634     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_ROADVEHS);
    01635   }
    01636   return cost;
    01637 }
    01638
    01639
    01640 static Vehicle *ClearRoadStopStatusEnum(Vehicle *v, void *)
    01641 {
    01642   if (v->type == VEH_ROAD) {
    01643     /* Okay... we are a road vehicle on a drive through road stop.
    01644      * But that road stop has just been removed, so we need to make
    01645      * sure we are in a valid state... however, vehicles can also
    01646      * turn on road stop tiles, so only clear the 'road stop' state
    01647      * bits and only when the state was 'in road stop', otherwise
    01648      * we'll end up clearing the turn around bits. */
    01649     RoadVehicle *rv = RoadVehicle::From(v);
    01650     if (HasBit(rv->state, RVS_IN_DT_ROAD_STOP)) rv->state &= RVSB_ROAD_STOP_TRACKDIR_MASK;
    01651   }
    01652
    01653   return NULL;
    01654 }
    01655
    01656
    01663 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags)
    01664 {
    01665   Station *st = Station::GetByTile(tile);
    01666
    01667   if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) {
    01668     return CMD_ERROR;
    01669   }
    01670
    01671   bool is_truck = IsTruckStop(tile);
    01672
    01673   RoadStop **primary_stop;
    01674   RoadStop *cur_stop;
    01675   if (is_truck) { // truck stop
    01676     primary_stop = &st->truck_stops;
    01677     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_TRUCK);
    01678   } else {
    01679     primary_stop = &st->bus_stops;
    01680     cur_stop = RoadStop::GetByTile(tile, ROADSTOP_BUS);
    01681   }
    01682
    01683   assert(cur_stop != NULL);
    01684
    01685   /* don't do the check for drive-through road stops when company bankrupts */
    01686   if (IsDriveThroughStopTile(tile) && (flags & DC_BANKRUPT)) {
    01687     /* remove the 'going through road stop' status from all vehicles on that tile */
    01688     if (flags & DC_EXEC) FindVehicleOnPos(tile, NULL, &ClearRoadStopStatusEnum);
    01689   } else {
    01690     if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
    01691   }
    01692
    01693   if (flags & DC_EXEC) {
    01694     if (*primary_stop == cur_stop) {
    01695       /* removed the first stop in the list */
    01696       *primary_stop = cur_stop->next;
    01697       /* removed the only stop? */
    01698       if (*primary_stop == NULL) {
    01699         st->facilities &= (is_truck ? ~FACIL_TRUCK_STOP : ~FACIL_BUS_STOP);
    01700       }
    01701     } else {
    01702       /* tell the predecessor in the list to skip this stop */
    01703       RoadStop *pred = *primary_stop;
    01704       while (pred->next != cur_stop) pred = pred->next;
    01705       pred->next = cur_stop->next;
    01706     }
    01707
    01708     if (IsDriveThroughStopTile(tile)) {
    01709       /* Clears the tile for us */
    01710       cur_stop->ClearDriveThrough();
    01711     } else {
    01712       DoClearSquare(tile);
    01713     }
    01714
    01715     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_ROADVEHS);
    01716     delete cur_stop;
    01717
    01718     /* Make sure no vehicle is going to the old roadstop */
    01719     RoadVehicle *v;
    01720     FOR_ALL_ROADVEHICLES(v) {
    01721       if (v->First() == v && v->current_order.IsType(OT_GOTO_STATION) &&
    01722           v->dest_tile == tile) {
    01723         v->dest_tile = v->GetOrderStationLocation(st->index);
    01724       }
    01725     }
    01726
    01727     st->rect.AfterRemoveTile(st, tile);
    01728
    01729     st->UpdateVirtCoord();
    01730     st->RecomputeIndustriesNear();
    01731     DeleteStationIfEmpty(st);
    01732
    01733     /* Update the tile area of the truck/bus stop */
    01734     if (is_truck) {
    01735       st->truck_station.Clear();
    01736       for (const RoadStop *rs = st->truck_stops; rs != NULL; rs = rs->next) st->truck_station.Add(rs->xy);
    01737     } else {
    01738       st->bus_station.Clear();
    01739       for (const RoadStop *rs = st->bus_stops; rs != NULL; rs = rs->next) st->bus_station.Add(rs->xy);
    01740     }
    01741   }
    01742
    01743   return CommandCost(EXPENSES_CONSTRUCTION, _price[is_truck ? PR_CLEAR_STATION_TRUCK : PR_CLEAR_STATION_BUS]);
    01744 }
    01745
    01754 CommandCost CmdRemoveRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01755 {
    01756   /* Make sure the specified tile is a road stop of the correct type */
    01757   if (!IsTileType(tile, MP_STATION) || !IsRoadStop(tile) || (uint32)GetRoadStopType(tile) != GB(p2, 0, 1)) return CMD_ERROR;
    01758
    01759   /* Save the stop info before it is removed */
    01760   bool is_drive_through = IsDriveThroughStopTile(tile);
    01761   RoadTypes rts = GetRoadTypes(tile);
    01762   RoadBits road_bits = IsDriveThroughStopTile(tile) ?
    01763       ((GetRoadStopDir(tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y) :
    01764       DiagDirToRoadBits(GetRoadStopDir(tile));
    01765
    01766   Owner road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    01767   Owner tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    01768   CommandCost ret = RemoveRoadStop(tile, flags);
    01769
    01770   /* If the stop was a drive-through stop replace the road */
    01771   if ((flags & DC_EXEC) && CmdSucceeded(ret) && is_drive_through) {
    01772     /* Rebuild the drive throuhg road stop. As a road stop can only be
    01773      * removed by the owner of the roadstop, _current_company is the
    01774      * owner of the road stop. */
    01775     MakeRoadNormal(tile, road_bits, rts, ClosestTownFromTile(tile, UINT_MAX)->index,
    01776         road_owner, tram_owner);
    01777   }
    01778
    01779   return ret;
    01780 }
    01781
    01789 static uint GetMinimalAirportDistanceToTile(const AirportFTAClass *afc, TileIndex town_tile, TileIndex airport_tile)
    01790 {
    01791   uint ttx = TileX(town_tile); // X, Y of town
    01792   uint tty = TileY(town_tile);
    01793
    01794   uint atx = TileX(airport_tile); // X, Y of northern airport corner
    01795   uint aty = TileY(airport_tile);
    01796
    01797   uint btx = TileX(airport_tile) + afc->size_x - 1; // X, Y of southern corner
    01798   uint bty = TileY(airport_tile) + afc->size_y - 1;
    01799
    01800   /* if ttx < atx, dx = atx - ttx
    01801    * if atx <= ttx <= btx, dx = 0
    01802    * else, dx = ttx - btx (similiar for dy) */
    01803   uint dx = ttx < atx ? atx - ttx : (ttx <= btx ? 0 : ttx - btx);
    01804   uint dy = tty < aty ? aty - tty : (tty <= bty ? 0 : tty - bty);
    01805
    01806   return dx + dy;
    01807 }
    01808
    01817 uint8 GetAirportNoiseLevelForTown(const AirportFTAClass *afc, TileIndex town_tile, TileIndex tile)
    01818 {
    01819   /* 0 cannot be accounted, and 1 is the lowest that can be reduced from town.
    01820    * So no need to go any further*/
    01821   if (afc->noise_level < 2) return afc->noise_level;
    01822
    01823   uint distance = GetMinimalAirportDistanceToTile(afc, town_tile, tile);
    01824
    01825   /* The steps for measuring noise reduction are based on the "magical" (and arbitrary) 8 base distance
    01826    * adding the town_council_tolerance 4 times, as a way to graduate, depending of the tolerance.
    01827    * Basically, it says that the less tolerant a town is, the bigger the distance before
    01828    * an actual decrease can be granted */
    01829   uint8 town_tolerance_distance = 8 + (_settings_game.difficulty.town_council_tolerance * 4);
    01830
    01831   /* now, we want to have the distance segmented using the distance judged bareable by town
    01832    * This will give us the coefficient of reduction the distance provides. */
    01833   uint noise_reduction = distance / town_tolerance_distance;
    01834
    01835   /* If the noise reduction equals the airport noise itself, don't give it for free.
    01836    * Otherwise, simply reduce the airport's level. */
    01837   return noise_reduction >= afc->noise_level ? 1 : afc->noise_level - noise_reduction;
    01838 }
    01839
    01847 Town *AirportGetNearestTown(const AirportFTAClass *afc, TileIndex airport_tile)
    01848 {
    01849   Town *t, *nearest = NULL;
    01850   uint add = afc->size_x + afc->size_y - 2; // GetMinimalAirportDistanceToTile can differ from DistanceManhattan by this much
    01851   uint mindist = UINT_MAX - add; // prevent overflow
    01852   FOR_ALL_TOWNS(t) {
    01853     if (DistanceManhattan(t->xy, airport_tile) < mindist + add) { // avoid calling GetMinimalAirportDistanceToTile too often
    01854       uint dist = GetMinimalAirportDistanceToTile(afc, t->xy, airport_tile);
    01855       if (dist < mindist) {
    01856         nearest = t;
    01857         mindist = dist;
    01858       }
    01859     }
    01860   }
    01861
    01862   return nearest;
    01863 }
    01864
    01865
    01867 void UpdateAirportsNoise()
    01868 {
    01869   Town *t;
    01870   const Station *st;
    01871
    01872   FOR_ALL_TOWNS(t) t->noise_reached = 0;
    01873
    01874   FOR_ALL_STATIONS(st) {
    01875     if (st->airport_tile != INVALID_TILE) {
    01876       const AirportFTAClass *afc = GetAirport(st->airport_type);
    01877       Town *nearest = AirportGetNearestTown(afc, st->airport_tile);
    01878       nearest->noise_reached += GetAirportNoiseLevelForTown(afc, nearest->xy, st->airport_tile);
    01879     }
    01880   }
    01881 }
    01882
    01893 CommandCost CmdBuildAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    01894 {
    01895   bool airport_upgrade = true;
    01896   StationID station_to_join = GB(p2, 16, 16);
    01897   bool reuse = (station_to_join != NEW_STATION);
    01898   if (!reuse) station_to_join = INVALID_STATION;
    01899   bool distant_join = (station_to_join != INVALID_STATION);
    01900
    01901   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    01902
    01903   if (p1 >= NUM_AIRPORTS) return CMD_ERROR;
    01904
    01905   if (!CheckIfAuthorityAllowsNewStation(tile, flags)) {
    01906     return CMD_ERROR;
    01907   }
    01908
    01909   /* Check if a valid, buildable airport was chosen for construction */
    01910   const AirportFTAClass *afc = GetAirport(p1);
    01911   if (!afc->IsAvailable()) return CMD_ERROR;
    01912
    01913   Town *t = ClosestTownFromTile(tile, UINT_MAX);
    01914   int w = afc->size_x;
    01915   int h = afc->size_y;
    01916
    01917   if (w > _settings_game.station.station_spread || h > _settings_game.station.station_spread) {
    01918     _error_message = STR_ERROR_STATION_TOO_SPREAD_OUT;
    01919     return CMD_ERROR;
    01920   }
    01921
    01922   CommandCost cost = CheckFlatLandBelow(tile, w, h, flags, 0, NULL);
    01923   if (CmdFailed(cost)) return cost;
    01924
    01925   /* Go get the final noise level, that is base noise minus factor from distance to town center */
    01926   Town *nearest = AirportGetNearestTown(afc, tile);
    01927   uint newnoise_level = GetAirportNoiseLevelForTown(afc, nearest->xy, tile);
    01928
    01929   /* Check if local auth would allow a new airport */
    01930   StringID authority_refuse_message = STR_NULL;
    01931
    01932   if (_settings_game.economy.station_noise_level) {
    01933     /* do not allow to build a new airport if this raise the town noise over the maximum allowed by town */
    01934     if ((nearest->noise_reached + newnoise_level) > nearest->MaxTownNoise()) {
    01935       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_NOISE;
    01936     }
    01937   } else {
    01938     uint num = 0;
    01939     const Station *st;
    01940     FOR_ALL_STATIONS(st) {
    01941       if (st->town == t && (st->facilities & FACIL_AIRPORT) && st->airport_type != AT_OILRIG) num++;
    01942     }
    01943     if (num >= 2) {
    01944       authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_AIRPORT;
    01945     }
    01946   }
    01947
    01948   if (authority_refuse_message != STR_NULL) {
    01949     SetDParam(0, t->index);
    01950     return_cmd_error(authority_refuse_message);
    01951   }
    01952
    01953   Station *st = NULL;
    01954   CommandCost ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 0), TileArea(tile, w, h), &st);
    01955   if (CmdFailed(ret)) return ret;
    01956
    01957   /* Distant join */
    01958   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    01959
    01960   /* Find a deleted station close to us */
    01961   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    01962
    01963   if (st != NULL) {
    01964     if (st->owner != _current_company) {
    01965       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    01966     }
    01967
    01968     if (!st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TEST)) return CMD_ERROR;
    01969
    01970     if (st->airport_tile != INVALID_TILE) {
    01971       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_AIRPORT);
    01972     }
    01973   } else {
    01974     airport_upgrade = false;
    01975
    01976     /* allocate and initialize new station */
    01977     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    01978
    01979     if (flags & DC_EXEC) {
    01980       st = new Station(tile);
    01981
    01982       st->town = t;
    01983       st->string_id = GenerateStationName(st, tile, !(afc->flags & AirportFTAClass::AIRPLANES) ? STATIONNAMING_HELIPORT : STATIONNAMING_AIRPORT);
    01984
    01985       if (Company::IsValidID(_current_company)) {
    01986         SetBit(st->town->have_ratings, _current_company);
    01987       }
    01988     }
    01989   }
    01990
    01991   cost.AddCost(_price[PR_BUILD_STATION_AIRPORT] * w * h);
    01992
    01993   if (flags & DC_EXEC) {
    01994     /* Always add the noise, so there will be no need to recalculate when option toggles */
    01995     nearest->noise_reached += newnoise_level;
    01996
    01997     st->airport_tile = tile;
    01998     st->AddFacility(FACIL_AIRPORT, tile);
    01999     st->airport_type = (byte)p1;
    02000     st->airport_flags = 0;
    02001
    02002     st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TRY);
    02003
    02004     /* if airport was demolished while planes were en-route to it, the
    02005      * positions can no longer be the same (v->u.air.pos), since different
    02006      * airports have different indexes. So update all planes en-route to this
    02007      * airport. Only update if
    02008      * 1. airport is upgraded
    02009      * 2. airport is added to existing station (unfortunately unavoideable)
    02010      */
    02011     if (airport_upgrade) UpdateAirplanesOnNewStation(st);
    02012
    02013     {
    02014       const byte *b = _airport_sections[p1];
    02015
    02016       TILE_LOOP(tile_cur, w, h, tile) {
    02017         MakeAirport(tile_cur, st->owner, st->index, *b);
    02018         b++;
    02019       }
    02020     }
    02021
    02022     st->UpdateVirtCoord();
    02023     UpdateStationAcceptance(st, false);
    02024     st->RecomputeIndustriesNear();
    02025     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02026     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02027     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_PLANES);
    02028
    02029     if (_settings_game.economy.station_noise_level) {
    02030       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02031     }
    02032   }
    02033
    02034   return cost;
    02035 }
    02036
    02043 static CommandCost RemoveAirport(TileIndex tile, DoCommandFlag flags)
    02044 {
    02045   Station *st = Station::GetByTile(tile);
    02046
    02047   if (_current_company != OWNER_WATER && !CheckOwnership(st->owner)) {
    02048     return CMD_ERROR;
    02049   }
    02050
    02051   tile = st->airport_tile;
    02052
    02053   const AirportFTAClass *afc = st->Airport();
    02054   int w = afc->size_x;
    02055   int h = afc->size_y;
    02056
    02057   CommandCost cost(EXPENSES_CONSTRUCTION, w * h * _price[PR_CLEAR_STATION_AIRPORT]);
    02058
    02059   const Aircraft *a;
    02060   FOR_ALL_AIRCRAFT(a) {
    02061     if (!a->IsNormalAircraft()) continue;
    02062     if (a->targetairport == st->index && a->state != FLYING) return CMD_ERROR;
    02063   }
    02064
    02065   TILE_LOOP(tile_cur, w, h, tile) {
    02066     if (!EnsureNoVehicleOnGround(tile_cur)) return CMD_ERROR;
    02067
    02068     if (flags & DC_EXEC) {
    02069       DeleteAnimatedTile(tile_cur);
    02070       DoClearSquare(tile_cur);
    02071     }
    02072   }
    02073
    02074   if (flags & DC_EXEC) {
    02075     for (uint i = 0; i < afc->nof_depots; ++i) {
    02076       DeleteWindowById(
    02077         WC_VEHICLE_DEPOT, tile + ToTileIndexDiff(afc->airport_depots[i])
    02078       );
    02079     }
    02080
    02081     /* Go get the final noise level, that is base noise minus factor from distance to town center.
    02082      * And as for construction, always remove it, even if the setting is not set, in order to avoid the
    02083      * need of recalculation */
    02084     Town *nearest = AirportGetNearestTown(afc, tile);
    02085     nearest->noise_reached -= GetAirportNoiseLevelForTown(afc, nearest->xy, tile);
    02086
    02087     st->rect.AfterRemoveRect(st, tile, w, h);
    02088
    02089     st->airport_tile = INVALID_TILE;
    02090     st->facilities &= ~FACIL_AIRPORT;
    02091
    02092     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_PLANES);
    02093
    02094     if (_settings_game.economy.station_noise_level) {
    02095       SetWindowDirty(WC_TOWN_VIEW, st->town->index);
    02096     }
    02097
    02098     st->UpdateVirtCoord();
    02099     st->RecomputeIndustriesNear();
    02100     DeleteStationIfEmpty(st);
    02101   }
    02102
    02103   return cost;
    02104 }
    02105
    02112 bool HasStationInUse(StationID station, CompanyID company)
    02113 {
    02114   const Vehicle *v;
    02115   FOR_ALL_VEHICLES(v) {
    02116     if (company == INVALID_COMPANY || v->owner == company) {
    02117       const Order *order;
    02118       FOR_VEHICLE_ORDERS(v, order) {
    02119         if ((order->IsType(OT_GOTO_STATION) || order->IsType(OT_GOTO_WAYPOINT)) && order->GetDestination() == station) {
    02120           return true;
    02121         }
    02122       }
    02123     }
    02124   }
    02125   return false;
    02126 }
    02127
    02128 static const TileIndexDiffC _dock_tileoffs_chkaround[] = {
    02129   {-1,  0},
    02130   { 0,  0},
    02131   { 0,  0},
    02132   { 0, -1}
    02133 };
    02134 static const byte _dock_w_chk[4] = { 2, 1, 2, 1 };
    02135 static const byte _dock_h_chk[4] = { 1, 2, 1, 2 };
    02136
    02145 CommandCost CmdBuildDock(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02146 {
    02147   StationID station_to_join = GB(p2, 16, 16);
    02148   bool reuse = (station_to_join != NEW_STATION);
    02149   if (!reuse) station_to_join = INVALID_STATION;
    02150   bool distant_join = (station_to_join != INVALID_STATION);
    02151
    02152   if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
    02153
    02154   DiagDirection direction = GetInclinedSlopeDirection(GetTileSlope(tile, NULL));
    02155   if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02156   direction = ReverseDiagDir(direction);
    02157
    02158   /* Docks cannot be placed on rapids */
    02159   if (IsWaterTile(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02160
    02161   if (!CheckIfAuthorityAllowsNewStation(tile, flags)) return CMD_ERROR;
    02162
    02163   if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02164
    02165   if (CmdFailed(DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR))) return CMD_ERROR;
    02166
    02167   TileIndex tile_cur = tile + TileOffsByDiagDir(direction);
    02168
    02169   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur, NULL) != SLOPE_FLAT) {
    02170     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02171   }
    02172
    02173   if (MayHaveBridgeAbove(tile_cur) && IsBridgeAbove(tile_cur)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
    02174
    02175   /* Get the water class of the water tile before it is cleared.*/
    02176   WaterClass wc = GetWaterClass(tile_cur);
    02177
    02178   if (CmdFailed(DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR))) return CMD_ERROR;
    02179
    02180   tile_cur += TileOffsByDiagDir(direction);
    02181   if (!IsTileType(tile_cur, MP_WATER) || GetTileSlope(tile_cur, NULL) != SLOPE_FLAT) {
    02182     return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
    02183   }
    02184
    02185   /* middle */
    02186   Station *st = NULL;
    02187   CommandCost ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p1, 0),
    02188       TileArea(tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02189           _dock_w_chk[direction], _dock_h_chk[direction]), &st);
    02190   if (CmdFailed(ret)) return ret;
    02191
    02192   /* Distant join */
    02193   if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
    02194
    02195   /* Find a deleted station close to us */
    02196   if (st == NULL && reuse) st = GetClosestDeletedStation(tile);
    02197
    02198   if (st != NULL) {
    02199     if (st->owner != _current_company) {
    02200       return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
    02201     }
    02202
    02203     if (!st->rect.BeforeAddRect(
    02204         tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02205         _dock_w_chk[direction], _dock_h_chk[direction], StationRect::ADD_TEST)) return CMD_ERROR;
    02206
    02207     if (st->dock_tile != INVALID_TILE) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_DOCK);
    02208   } else {
    02209     /* allocate and initialize new station */
    02210     if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
    02211
    02212     if (flags & DC_EXEC) {
    02213       st = new Station(tile);
    02214
    02215       st->town = ClosestTownFromTile(tile, UINT_MAX);
    02216       st->string_id = GenerateStationName(st, tile, STATIONNAMING_DOCK);
    02217
    02218       if (Company::IsValidID(_current_company)) {
    02219         SetBit(st->town->have_ratings, _current_company);
    02220       }
    02221     }
    02222   }
    02223
    02224   if (flags & DC_EXEC) {
    02225     st->dock_tile = tile;
    02226     st->AddFacility(FACIL_DOCK, tile);
    02227
    02228     st->rect.BeforeAddRect(
    02229         tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
    02230         _dock_w_chk[direction], _dock_h_chk[direction], StationRect::ADD_TRY);
    02231
    02232     MakeDock(tile, st->owner, st->index, direction, wc);
    02233
    02234     st->UpdateVirtCoord();
    02235     UpdateStationAcceptance(st, false);
    02236     st->RecomputeIndustriesNear();
    02237     InvalidateWindowData(WC_SELECT_STATION, 0, 0);
    02238     InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
    02239     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_SHIPS);
    02240   }
    02241
    02242   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_STATION_DOCK]);
    02243 }
    02244
    02251 static CommandCost RemoveDock(TileIndex tile, DoCommandFlag flags)
    02252 {
    02253   Station *st = Station::GetByTile(tile);
    02254   if (!CheckOwnership(st->owner)) return CMD_ERROR;
    02255
    02256   TileIndex tile1 = st->dock_tile;
    02257   TileIndex tile2 = tile1 + TileOffsByDiagDir(GetDockDirection(tile1));
    02258
    02259   if (!EnsureNoVehicleOnGround(tile1)) return CMD_ERROR;
    02260   if (!EnsureNoVehicleOnGround(tile2)) return CMD_ERROR;
    02261
    02262   if (flags & DC_EXEC) {
    02263     DoClearSquare(tile1);
    02264     MakeWaterKeepingClass(tile2, st->owner);
    02265
    02266     st->rect.AfterRemoveTile(st, tile1);
    02267     st->rect.AfterRemoveTile(st, tile2);
    02268
    02269     MarkTileDirtyByTile(tile2);
    02270
    02271     st->dock_tile = INVALID_TILE;
    02272     st->facilities &= ~FACIL_DOCK;
    02273
    02274     SetWindowWidgetDirty(WC_STATION_VIEW, st->index, SVW_SHIPS);
    02275     st->UpdateVirtCoord();
    02276     st->RecomputeIndustriesNear();
    02277     DeleteStationIfEmpty(st);
    02278   }
    02279
    02280   return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_STATION_DOCK]);
    02281 }
    02282
    02283 #include "table/station_land.h"
    02284
    02285 const DrawTileSprites *GetStationTileLayout(StationType st, byte gfx)
    02286 {
    02287   return &_station_display_datas[st][gfx];
    02288 }
    02289
    02290 static void DrawTile_Station(TileInfo *ti)
    02291 {
    02292   const DrawTileSprites *t = NULL;
    02293   RoadTypes roadtypes;
    02294   int32 total_offset;
    02295   int32 custom_ground_offset;
    02296
    02297   if (HasStationRail(ti->tile)) {
    02298     const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
    02299     roadtypes = ROADTYPES_NONE;
    02300     total_offset = rti->total_offset;
    02301     custom_ground_offset = rti->custom_ground_offset;
    02302   } else {
    02303     roadtypes = IsRoadStop(ti->tile) ? GetRoadTypes(ti->tile) : ROADTYPES_NONE;
    02304     total_offset = 0;
    02305     custom_ground_offset = 0;
    02306   }
    02307   uint32 relocation = 0;
    02308   const BaseStation *st = NULL;
    02309   const StationSpec *statspec = NULL;
    02310   Owner owner = GetTileOwner(ti->tile);
    02311
    02312   SpriteID palette;
    02313   if (Company::IsValidID(owner)) {
    02314     palette = COMPANY_SPRITE_COLOUR(owner);
    02315   } else {
    02316     /* Some stations are not owner by a company, namely oil rigs */
    02317     palette = PALETTE_TO_GREY;
    02318   }
    02319
    02320   /* don't show foundation for docks */
    02321   if (ti->tileh != SLOPE_FLAT && !IsDock(ti->tile))
    02322     DrawFoundation(ti, FOUNDATION_LEVELED);
    02323
    02324   if (IsCustomStationSpecIndex(ti->tile)) {
    02325     /* look for customization */
    02326     st = BaseStation::GetByTile(ti->tile);
    02327     statspec = st->speclist[GetCustomStationSpecIndex(ti->tile)].spec;
    02328
    02329     if (statspec != NULL) {
    02330       uint tile = GetStationGfx(ti->tile);
    02331
    02332       relocation = GetCustomStationRelocation(statspec, st, ti->tile);
    02333
    02334       if (HasBit(statspec->callback_mask, CBM_STATION_SPRITE_LAYOUT)) {
    02335         uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0, 0, statspec, st, ti->tile);
    02336         if (callback != CALLBACK_FAILED) tile = (callback & ~1) + GetRailStationAxis(ti->tile);
    02337       }
    02338
    02339       /* Ensure the chosen tile layout is valid for this custom station */
    02340       if (statspec->renderdata != NULL) {
    02341         t = &statspec->renderdata[tile < statspec->tiles ? tile : (uint)GetRailStationAxis(ti->tile)];
    02342       }
    02343     }
    02344   }
    02345
    02346   if (t == NULL || t->seq == NULL) t = &_station_display_datas[GetStationType(ti->tile)][GetStationGfx(ti->tile)];
    02347
    02348
    02349   if (IsBuoy(ti->tile) || IsDock(ti->tile) || (IsOilRig(ti->tile) && GetWaterClass(ti->tile) != WATER_CLASS_INVALID)) {
    02350     if (ti->tileh == SLOPE_FLAT) {
    02351       DrawWaterClassGround(ti);
    02352     } else {
    02353       assert(IsDock(ti->tile));
    02354       TileIndex water_tile = ti->tile + TileOffsByDiagDir(GetDockDirection(ti->tile));
    02355       WaterClass wc = GetWaterClass(water_tile);
    02356       if (wc == WATER_CLASS_SEA) {
    02357         DrawShoreTile(ti->tileh);
    02358       } else {
    02359         DrawClearLandTile(ti, 3);
    02360       }
    02361     }
    02362   } else {
    02363     SpriteID image = t->ground.sprite;
    02364     SpriteID pal   = t->ground.pal;
    02365     if (HasBit(image, SPRITE_MODIFIER_USE_OFFSET)) {
    02366       image += GetCustomStationGroundRelocation(statspec, st, ti->tile);
    02367       image += custom_ground_offset;
    02368     } else {
    02369       image += total_offset;
    02370     }
    02371     DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, palette));
    02372
    02373     /* PBS debugging, draw reserved tracks darker */
    02374     if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationRail(ti->tile) && HasStationReservation(ti->tile)) {
    02375       const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
    02376       DrawGroundSprite(GetRailStationAxis(ti->tile) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
    02377     }
    02378   }
    02379
    02380   if (HasStationRail(ti->tile) && HasCatenaryDrawn(GetRailType(ti->tile)) && IsStationTileElectrifiable(ti->tile)) DrawCatenary(ti);
    02381
    02382   if (HasBit(roadtypes, ROADTYPE_TRAM)) {
    02383     Axis axis = GetRoadStopDir(ti->tile) == DIAGDIR_NE ? AXIS_X : AXIS_Y;
    02384     DrawGroundSprite((HasBit(roadtypes, ROADTYPE_ROAD) ? SPR_TRAMWAY_OVERLAY : SPR_TRAMWAY_TRAM) + (axis ^ 1), PAL_NONE);
    02385     DrawTramCatenary(ti, axis == AXIS_X ? ROAD_X : ROAD_Y);
    02386   }
    02387
    02388   if (IsRailWaypoint(ti->tile)) {
    02389     /* Don't offset the waypoint graphics; they're always the same. */
    02390     total_offset = 0;
    02391   }
    02392
    02393   const DrawTileSeqStruct *dtss;
    02394   foreach_draw_tile_seq(dtss, t->seq) {
    02395     SpriteID image = dtss->image.sprite;
    02396
    02397     /* Stop drawing sprite sequence once we meet a sprite that doesn't have to be opaque */
    02398     if (IsInvisibilitySet(TO_BUILDINGS) && !HasBit(image, SPRITE_MODIFIER_OPAQUE)) return;
    02399
    02400     if (relocation == 0 || HasBit(image, SPRITE_MODIFIER_USE_OFFSET)) {
    02401       image += total_offset;
    02402     } else {
    02403       image += relocation;
    02404     }
    02405
    02406     SpriteID pal = SpriteLayoutPaletteTransform(image, dtss->image.pal, palette);
    02407
    02408     if ((byte)dtss->delta_z != 0x80) {
    02409       AddSortableSpriteToDraw(
    02410         image, pal,
    02411         ti->x + dtss->delta_x, ti->y + dtss->delta_y,
    02412         dtss->size_x, dtss->size_y,
    02413         dtss->size_z, ti->z + dtss->delta_z,
    02414         !HasBit(image, SPRITE_MODIFIER_OPAQUE) && IsTransparencySet(TO_BUILDINGS)
    02415       );
    02416     } else {
    02417       /* For stations and original spritelayouts delta_x and delta_y are signed */
    02418       AddChildSpriteScreen(image, pal, dtss->delta_x, dtss->delta_y, !HasBit(image, SPRITE_MODIFIER_OPAQUE) && IsTransparencySet(TO_BUILDINGS));
    02419     }
    02420   }
    02421 }
    02422
    02423 void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, RoadType roadtype, int image)
    02424 {
    02425   int32 total_offset = 0;
    02426   SpriteID pal = COMPANY_SPRITE_COLOUR(_local_company);
    02427   const DrawTileSprites *t = &_station_display_datas[st][image];
    02428
    02429   if (railtype != INVALID_RAILTYPE) {
    02430     const RailtypeInfo *rti = GetRailTypeInfo(railtype);
    02431     total_offset = rti->total_offset;
    02432   }
    02433
    02434   SpriteID img = t->ground.sprite;
    02435   DrawSprite(img + total_offset, HasBit(img, PALETTE_MODIFIER_COLOUR) ? pal : PAL_NONE, x, y);
    02436
    02437   if (roadtype == ROADTYPE_TRAM) {
    02438     DrawSprite(SPR_TRAMWAY_TRAM + (t->ground.sprite == SPR_ROAD_PAVED_STRAIGHT_X ? 1 : 0), PAL_NONE, x, y);
    02439   }
    02440
    02441   const DrawTileSeqStruct *dtss;
    02442   foreach_draw_tile_seq(dtss, t->seq) {
    02443     Point pt = RemapCoords(dtss->delta_x, dtss->delta_y, dtss->delta_z);
    02444     DrawSprite(dtss->image.sprite + total_offset, pal, x + pt.x, y + pt.y);
    02445   }
    02446 }
    02447
    02448 static uint GetSlopeZ_Station(TileIndex tile, uint x, uint y)
    02449 {
    02450   return GetTileMaxZ(tile);
    02451 }
    02452
    02453 static Foundation GetFoundation_Station(TileIndex tile, Slope tileh)
    02454 {
    02455   return FlatteningFoundation(tileh);
    02456 }
    02457
    02458 static void GetTileDesc_Station(TileIndex tile, TileDesc *td)
    02459 {
    02460   td->owner[0] = GetTileOwner(tile);
    02461   if (IsDriveThroughStopTile(tile)) {
    02462     Owner road_owner = INVALID_OWNER;
    02463     Owner tram_owner = INVALID_OWNER;
    02464     RoadTypes rts = GetRoadTypes(tile);
    02465     if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    02466     if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    02467
    02468     /* Is there a mix of owners? */
    02469     if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
    02470         (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
    02471       uint i = 1;
    02472       if (road_owner != INVALID_OWNER) {
    02473         td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
    02474         td->owner[i] = road_owner;
    02475         i++;
    02476       }
    02477       if (tram_owner != INVALID_OWNER) {
    02478         td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
    02479         td->owner[i] = tram_owner;
    02480       }
    02481     }
    02482   }
    02483   td->build_date = BaseStation::GetByTile(tile)->build_date;
    02484
    02485   const StationSpec *spec = GetStationSpec(tile);
    02486
    02487   if (spec != NULL) {
    02488     td->station_class = GetStationClassName(spec->sclass);
    02489     td->station_name = spec->name;
    02490
    02491     if (spec->grffile != NULL) {
    02492       const GRFConfig *gc = GetGRFConfig(spec->grffile->grfid);
    02493       td->grf = gc->name;
    02494     }
    02495   }
    02496
    02497   StringID str;
    02498   switch (GetStationType(tile)) {
    02499     default: NOT_REACHED();
    02500     case STATION_RAIL:     str = STR_LAI_STATION_DESCRIPTION_RAILROAD_STATION; break;
    02501     case STATION_AIRPORT:
    02502       str = (IsHangar(tile) ? STR_LAI_STATION_DESCRIPTION_AIRCRAFT_HANGAR : STR_LAI_STATION_DESCRIPTION_AIRPORT);
    02503       break;
    02504     case STATION_TRUCK:    str = STR_LAI_STATION_DESCRIPTION_TRUCK_LOADING_AREA; break;
    02505     case STATION_BUS:      str = STR_LAI_STATION_DESCRIPTION_BUS_STATION; break;
    02506     case STATION_OILRIG:   str = STR_INDUSTRY_NAME_OIL_RIG; break;
    02507     case STATION_DOCK:     str = STR_LAI_STATION_DESCRIPTION_SHIP_DOCK; break;
    02508     case STATION_BUOY:     str = STR_LAI_STATION_DESCRIPTION_BUOY; break;
    02509     case STATION_WAYPOINT: str = STR_LAI_STATION_DESCRIPTION_WAYPOINT; break;
    02510   }
    02511   td->str = str;
    02512 }
    02513
    02514
    02515 static TrackStatus GetTileTrackStatus_Station(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
    02516 {
    02517   TrackBits trackbits = TRACK_BIT_NONE;
    02518
    02519   switch (mode) {
    02520     case TRANSPORT_RAIL:
    02521       if (HasStationRail(tile) && !IsStationTileBlocked(tile)) {
    02522         trackbits = TrackToTrackBits(GetRailStationTrack(tile));
    02523       }
    02524       break;
    02525
    02526     case TRANSPORT_WATER:
    02527       /* buoy is coded as a station, it is always on open water */
    02528       if (IsBuoy(tile)) {
    02529         trackbits = TRACK_BIT_ALL;
    02530         /* remove tracks that connect NE map edge */
    02531         if (TileX(tile) == 0) trackbits &= ~(TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_RIGHT);
    02532         /* remove tracks that connect NW map edge */
    02533         if (TileY(tile) == 0) trackbits &= ~(TRACK_BIT_Y | TRACK_BIT_LEFT | TRACK_BIT_UPPER);
    02534       }
    02535       break;
    02536
    02537     case TRANSPORT_ROAD:
    02538       if ((GetRoadTypes(tile) & sub_mode) != 0 && IsRoadStop(tile)) {
    02539         DiagDirection dir = GetRoadStopDir(tile);
    02540         Axis axis = DiagDirToAxis(dir);
    02541
    02542         if (side != INVALID_DIAGDIR) {
    02543           if (axis != DiagDirToAxis(side) || (IsStandardRoadStopTile(tile) && dir != side)) break;
    02544         }
    02545
    02546         trackbits = AxisToTrackBits(axis);
    02547       }
    02548       break;
    02549
    02550     default:
    02551       break;
    02552   }
    02553
    02554   return CombineTrackStatus(TrackBitsToTrackdirBits(trackbits), TRACKDIR_BIT_NONE);
    02555 }
    02556
    02557
    02558 static void TileLoop_Station(TileIndex tile)
    02559 {
    02560   /* FIXME -- GetTileTrackStatus_Station -> animated stationtiles
    02561    * hardcoded.....not good */
    02562   switch (GetStationType(tile)) {
    02563     case STATION_AIRPORT:
    02564       switch (GetStationGfx(tile)) {
    02565         case GFX_RADAR_LARGE_FIRST:
    02566         case GFX_WINDSACK_FIRST : // for small airport
    02567         case GFX_RADAR_INTERNATIONAL_FIRST:
    02568         case GFX_RADAR_METROPOLITAN_FIRST:
    02569         case GFX_RADAR_DISTRICTWE_FIRST: // radar district W-E airport
    02570         case GFX_WINDSACK_INTERCON_FIRST : // for intercontinental airport
    02571           AddAnimatedTile(tile);
    02572           break;
    02573       }
    02574       break;
    02575
    02576     case STATION_DOCK:
    02577       if (GetTileSlope(tile, NULL) != SLOPE_FLAT) break; // only handle water part
    02578     /* FALL THROUGH */
    02579     case STATION_OILRIG: //(station part)
    02580     case STATION_BUOY:
    02581       TileLoop_Water(tile);
    02582       break;
    02583
    02584     default: break;
    02585   }
    02586 }
    02587
    02588
    02589 static void AnimateTile_Station(TileIndex tile)
    02590 {
    02591   struct AnimData {
    02592     StationGfx from; // first sprite
    02593     StationGfx to;   // last sprite
    02594     byte delay;
    02595   };
    02596
    02597   static const AnimData data[] = {
    02598     { GFX_RADAR_LARGE_FIRST,         GFX_RADAR_LARGE_LAST,         3 },
    02599     { GFX_WINDSACK_FIRST,            GFX_WINDSACK_LAST,            1 },
    02600     { GFX_RADAR_INTERNATIONAL_FIRST, GFX_RADAR_INTERNATIONAL_LAST, 3 },
    02601     { GFX_RADAR_METROPOLITAN_FIRST,  GFX_RADAR_METROPOLITAN_LAST,  3 },
    02602     { GFX_RADAR_DISTRICTWE_FIRST,    GFX_RADAR_DISTRICTWE_LAST,    3 },
    02603     { GFX_WINDSACK_INTERCON_FIRST,   GFX_WINDSACK_INTERCON_LAST,   1 }
    02604   };
    02605
    02606   if (HasStationRail(tile)) {
    02607     AnimateStationTile(tile);
    02608     return;
    02609   }
    02610
    02611   StationGfx gfx = GetStationGfx(tile);
    02612
    02613   for (const AnimData *i = data; i != endof(data); i++) {
    02614     if (i->from <= gfx && gfx <= i->to) {
    02615       if ((_tick_counter & i->delay) == 0) {
    02616         SetStationGfx(tile, gfx < i->to ? gfx + 1 : i->from);
    02617         MarkTileDirtyByTile(tile);
    02618       }
    02619       break;
    02620     }
    02621   }
    02622 }
    02623
    02624
    02625 static bool ClickTile_Station(TileIndex tile)
    02626 {
    02627   const BaseStation *st = BaseStation::GetByTile(tile);
    02628
    02629   if (st->facilities & FACIL_WAYPOINT) {
    02630     ShowWaypointWindow(Waypoint::From(st));
    02631   } else if (IsHangar(tile)) {
    02632     ShowDepotWindow(tile, VEH_AIRCRAFT);
    02633   } else {
    02634     ShowStationViewWindow(st->index);
    02635   }
    02636   return true;
    02637 }
    02638
    02639 static VehicleEnterTileStatus VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
    02640 {
    02641   if (v->type == VEH_TRAIN) {
    02642     StationID station_id = GetStationIndex(tile);
    02643     if (!v->current_order.ShouldStopAtStation(v, station_id)) return VETSB_CONTINUE;
    02644     if (!IsRailStation(tile) || !Train::From(v)->IsFrontEngine()) return VETSB_CONTINUE;
    02645
    02646     int station_ahead;
    02647     int station_length;
    02648     int stop = GetTrainStopLocation(station_id, tile, Train::From(v), &station_ahead, &station_length);
    02649
    02650     /* Stop whenever that amount of station ahead + the distance from the
    02651      * begin of the platform to the stop location is longer than the length
    02652      * of the platform. Station ahead 'includes' the current tile where the
    02653      * vehicle is on, so we need to substract that. */
    02654     if (!IsInsideBS(stop + station_ahead, station_length, TILE_SIZE)) return VETSB_CONTINUE;
    02655
    02656     DiagDirection dir = DirToDiagDir(v->direction);
    02657
    02658     x &= 0xF;
    02659     y &= 0xF;
    02660
    02661     if (DiagDirToAxis(dir) != AXIS_X) Swap(x, y);
    02662     if (y == TILE_SIZE / 2) {
    02663       if (dir != DIAGDIR_SE && dir != DIAGDIR_SW) x = TILE_SIZE - 1 - x;
    02664       stop &= TILE_SIZE - 1;
    02665
    02666       if (x == stop) return VETSB_ENTERED_STATION | (VehicleEnterTileStatus)(station_id << VETS_STATION_ID_OFFSET); // enter station
    02667       if (x < stop) {
    02668         uint16 spd;
    02669
    02670         v->vehstatus |= VS_TRAIN_SLOWING;
    02671         spd = max(0, (stop - x) * 20 - 15);
    02672         if (spd < v->cur_speed) v->cur_speed = spd;
    02673       }
    02674     }
    02675   } else if (v->type == VEH_ROAD) {
    02676     RoadVehicle *rv = RoadVehicle::From(v);
    02677     if (rv->state < RVSB_IN_ROAD_STOP && !IsReversingRoadTrackdir((Trackdir)rv->state) && rv->frame == 0) {
    02678       if (IsRoadStop(tile) && rv->IsRoadVehFront()) {
    02679         /* Attempt to allocate a parking bay in a road stop */
    02680         return RoadStop::GetByTile(tile, GetRoadStopType(tile))->Enter(rv) ? VETSB_CONTINUE : VETSB_CANNOT_ENTER;
    02681       }
    02682     }
    02683   }
    02684
    02685   return VETSB_CONTINUE;
    02686 }
    02687
    02694 static bool StationHandleBigTick(BaseStation *st)
    02695 {
    02696   if (!st->IsInUse() && ++st->delete_ctr >= 8) {
    02697     delete st;
    02698     return false;
    02699   }
    02700
    02701   if ((st->facilities & FACIL_WAYPOINT) == 0) UpdateStationAcceptance(Station::From(st), true);
    02702
    02703   return true;
    02704 }
    02705
    02706 static inline void byte_inc_sat(byte *p)
    02707 {
    02708   byte b = *p + 1;
    02709   if (b != 0) *p = b;
    02710 }
    02711
    02712 static void UpdateStationRating(Station *st)
    02713 {
    02714   bool waiting_changed = false;
    02715
    02716   byte_inc_sat(&st->time_since_load);
    02717   byte_inc_sat(&st->time_since_unload);
    02718
    02719   const CargoSpec *cs;
    02720   FOR_ALL_CARGOSPECS(cs) {
    02721     GoodsEntry *ge = &st->goods[cs->Index()];
    02722     /* Slowly increase the rating back to his original level in the case we
    02723      *  didn't deliver cargo yet to this station. This happens when a bribe
    02724      *  failed while you didn't moved that cargo yet to a station. */
    02725     if (!HasBit(ge->acceptance_pickup, GoodsEntry::PICKUP) && ge->rating < INITIAL_STATION_RATING) {
    02726       ge->rating++;
    02727     }
    02728
    02729     /* Only change the rating if we are moving this cargo */
    02730     if (HasBit(ge->acceptance_pickup, GoodsEntry::PICKUP)) {
    02731       byte_inc_sat(&ge->days_since_pickup);
    02732
    02733       bool skip = false;
    02734       int rating = 0;
    02735       uint waiting = ge->cargo.Count();
    02736
    02737       if (HasBit(cs->callback_mask, CBM_CARGO_STATION_RATING_CALC)) {
    02738         /* Perform custom station rating. If it succeeds the speed, days in transit and
    02739          * waiting cargo ratings must not be executed. */
    02740
    02741         /* NewGRFs expect last speed to be 0xFF when no vehicle has arrived yet. */
    02742         uint last_speed = ge->last_speed;
    02743         if (last_speed == 0) last_speed = 0xFF;
    02744
    02745         uint32 var18 = min(ge->days_since_pickup, 0xFF) | (min(waiting, 0xFFFF) << 8) | (min(last_speed, 0xFF) << 24);
    02746         /* Convert to the 'old' vehicle types */
    02747         uint32 var10 = (st->last_vehicle_type == VEH_INVALID) ? 0x0 : (st->last_vehicle_type + 0x10);
    02748         uint16 callback = GetCargoCallback(CBID_CARGO_STATION_RATING_CALC, var10, var18, cs);
    02749         if (callback != CALLBACK_FAILED) {
    02750           skip = true;
    02751           rating = GB(callback, 0, 14);
    02752
    02753           /* Simulate a 15 bit signed value */
    02754           if (HasBit(callback, 14)) rating -= 0x4000;
    02755         }
    02756       }
    02757
    02758       if (!skip) {
    02759         int b = ge->last_speed - 85;
    02760         if (b >= 0) rating += b >> 2;
    02761
    02762         byte days = ge->days_since_pickup;
    02763         if (st->last_vehicle_type == VEH_SHIP) days >>= 2;
    02764         (days > 21) ||
    02765         (rating += 25, days > 12) ||
    02766         (rating += 25, days > 6) ||
    02767         (rating += 45, days > 3) ||
    02768         (rating += 35, true);
    02769
    02770         (rating -= 90, waiting > 1500) ||
    02771         (rating += 55, waiting > 1000) ||
    02772         (rating += 35, waiting > 600) ||
    02773         (rating += 10, waiting > 300) ||
    02774         (rating += 20, waiting > 100) ||
    02775         (rating += 10, true);
    02776       }
    02777
    02778       if (Company::IsValidID(st->owner) && HasBit(st->town->statues, st->owner)) rating += 26;
    02779
    02780       byte age = ge->last_age;
    02781       (age >= 3) ||
    02782       (rating += 10, age >= 2) ||
    02783       (rating += 10, age >= 1) ||
    02784       (rating += 13, true);
    02785
    02786       {
    02787         int or_ = ge->rating; // old rating
    02788
    02789         /* only modify rating in steps of -2, -1, 0, 1 or 2 */
    02790         ge->rating = rating = or_ + Clamp(Clamp(rating, 0, 255) - or_, -2, 2);
    02791
    02792         /* if rating is <= 64 and more than 200 items waiting,
    02793          * remove some random amount of goods from the station */
    02794         if (rating <= 64 && waiting >= 200) {
    02795           int dec = Random() & 0x1F;
    02796           if (waiting < 400) dec &= 7;
    02797           waiting -= dec + 1;
    02798           waiting_changed = true;
    02799         }
    02800
    02801         /* if rating is <= 127 and there are any items waiting, maybe remove some goods. */
    02802         if (rating <= 127 && waiting != 0) {
    02803           uint32 r = Random();
    02804           if (rating <= (int)GB(r, 0, 7)) {
    02805             /* Need to have int, otherwise it will just overflow etc. */
    02806             waiting = max((int)waiting - (int)GB(r, 8, 2) - 1, 0);
    02807             waiting_changed = true;
    02808           }
    02809         }
    02810
    02811         /* At some point we really must cap the cargo. Previously this
    02812          * was a strict 4095, but now we'll have a less strict, but
    02813          * increasingly agressive truncation of the amount of cargo. */
    02814         static const uint WAITING_CARGO_THRESHOLD  = 1 << 12;
    02815         static const uint WAITING_CARGO_CUT_FACTOR = 1 <<  6;
    02816         static const uint MAX_WAITING_CARGO        = 1 << 15;
    02817
    02818         if (waiting > WAITING_CARGO_THRESHOLD) {
    02819           uint difference = waiting - WAITING_CARGO_THRESHOLD;
    02820           waiting -= (difference / WAITING_CARGO_CUT_FACTOR);
    02821
    02822           waiting = min(waiting, MAX_WAITING_CARGO);
    02823           waiting_changed = true;
    02824         }
    02825
    02826         if (waiting_changed) ge->cargo.Truncate(waiting);
    02827       }
    02828     }
    02829   }
    02830
    02831   StationID index = st->index;
    02832   if (waiting_changed) {
    02833     SetWindowDirty(WC_STATION_VIEW, index); // update whole window
    02834   } else {
    02835     SetWindowWidgetDirty(WC_STATION_VIEW, index, SVW_RATINGLIST); // update only ratings list
    02836   }
    02837 }
    02838
    02839 /* called for every station each tick */
    02840 static void StationHandleSmallTick(BaseStation *st)
    02841 {
    02842   if ((st->facilities & FACIL_WAYPOINT) != 0 || !st->IsInUse()) return;
    02843
    02844   byte b = st->delete_ctr + 1;
    02845   if (b >= 185) b = 0;
    02846   st->delete_ctr = b;
    02847
    02848   if (b == 0) UpdateStationRating(Station::From(st));
    02849 }
    02850
    02851 void OnTick_Station()
    02852 {
    02853   if (_game_mode == GM_EDITOR) return;
    02854
    02855   BaseStation *st;
    02856   FOR_ALL_BASE_STATIONS(st) {
    02857     StationHandleSmallTick(st);
    02858
    02859     /* Run 250 tick interval trigger for station animation.
    02860      * Station index is included so that triggers are not all done
    02861      * at the same time. */
    02862     if ((_tick_counter + st->index) % 250 == 0) {
    02863       /* Stop processing this station if it was deleted */
    02864       if (!StationHandleBigTick(st)) continue;
    02865       StationAnimationTrigger(st, st->xy, STAT_ANIM_250_TICKS);
    02866     }
    02867   }
    02868 }
    02869
    02870 void StationMonthlyLoop()
    02871 {
    02872   /* not used */
    02873 }
    02874
    02875
    02876 void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint radius)
    02877 {
    02878   Station *st;
    02879
    02880   FOR_ALL_STATIONS(st) {
    02881     if (st->owner == owner &&
    02882         DistanceManhattan(tile, st->xy) <= radius) {
    02883       for (CargoID i = 0; i < NUM_CARGO; i++) {
    02884         GoodsEntry *ge = &st->goods[i];
    02885
    02886         if (ge->acceptance_pickup != 0) {
    02887           ge->rating = Clamp(ge->rating + amount, 0, 255);
    02888         }
    02889       }
    02890     }
    02891   }
    02892 }
    02893
    02894 static void UpdateStationWaiting(Station *st, CargoID type, uint amount, SourceType source_type, SourceID source_id)
    02895 {
    02896   st->goods[type].cargo.Append(new CargoPacket(st->index, st->xy, amount, source_type, source_id));
    02897   SetBit(st->goods[type].acceptance_pickup, GoodsEntry::PICKUP);
    02898
    02899   StationAnimationTrigger(st, st->xy, STAT_ANIM_NEW_CARGO, type);
    02900
    02901   SetWindowDirty(WC_STATION_VIEW, st->index);
    02902   st->MarkTilesDirty(true);
    02903 }
    02904
    02905 static bool IsUniqueStationName(const char *name)
    02906 {
    02907   const Station *st;
    02908
    02909   FOR_ALL_STATIONS(st) {
    02910     if (st->name != NULL && strcmp(st->name, name) == 0) return false;
    02911   }
    02912
    02913   return true;
    02914 }
    02915
    02924 CommandCost CmdRenameStation(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
    02925 {
    02926   Station *st = Station::GetIfValid(p1);
    02927   if (st == NULL || !CheckOwnership(st->owner)) return CMD_ERROR;
    02928
    02929   bool reset = StrEmpty(text);
    02930
    02931   if (!reset) {
    02932     if (strlen(text) >= MAX_LENGTH_STATION_NAME_BYTES) return CMD_ERROR;
    02933     if (!IsUniqueStationName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
    02934   }
    02935
    02936   if (flags & DC_EXEC) {
    02937     free(st->name);
    02938     st->name = reset ? NULL : strdup(text);
    02939
    02940     st->UpdateVirtCoord();
    02941     InvalidateWindowData(WC_STATION_LIST, st->owner, 1);
    02942   }
    02943
    02944   return CommandCost();
    02945 }
    02946
    02955 void FindStationsAroundTiles(TileIndex tile, int w_prod, int h_prod, StationList *stations)
    02956 {
    02957   /* area to search = producer plus station catchment radius */
    02958   int max_rad = (_settings_game.station.modified_catchment ? MAX_CATCHMENT : CA_UNMODIFIED);
    02959
    02960   for (int dy = -max_rad; dy < h_prod + max_rad; dy++) {
    02961     for (int dx = -max_rad; dx < w_prod + max_rad; dx++) {
    02962       TileIndex cur_tile = TileAddWrap(tile, dx, dy);
    02963       if (cur_tile == INVALID_TILE || !IsTileType(cur_tile, MP_STATION)) continue;
    02964
    02965       Station *st = Station::GetByTile(cur_tile);
    02966       if (st == NULL) continue;
    02967
    02968       if (_settings_game.station.modified_catchment) {
    02969         int rad = st->GetCatchmentRadius();
    02970         if (dx < -rad || dx >= rad + w_prod || dy < -rad || dy >= rad + h_prod) continue;
    02971       }
    02972
    02973       /* Insert the station in the set. This will fail if it has
    02974        * already been added.
    02975        */
    02976       stations->Include(st);
    02977     }
    02978   }
    02979 }
    02980
    02985 const StationList *StationFinder::GetStations()
    02986 {
    02987   if (this->tile != INVALID_TILE) {
    02988     FindStationsAroundTiles(this->tile, this->x_extent, this->y_extent, &this->stations);
    02989     this->tile = INVALID_TILE;
    02990   }
    02991   return &this->stations;
    02992 }
    02993
    02994 uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations)
    02995 {
    02996   /* Return if nothing to do. Also the rounding below fails for 0. */
    02997   if (amount == 0) return 0;
    02998
    02999   Station *st1 = NULL;   // Station with best rating
    03000   Station *st2 = NULL;   // Second best station
    03001   uint best_rating1 = 0; // rating of st1
    03002   uint best_rating2 = 0; // rating of st2
    03003
    03004   for (Station * const *st_iter = all_stations->Begin(); st_iter != all_stations->End(); ++st_iter) {
    03005     Station *st = *st_iter;
    03006
    03007     /* Is the station reserved exclusively for somebody else? */
    03008     if (st->town->exclusive_counter > 0 && st->town->exclusivity != st->owner) continue;
    03009
    03010     if (st->goods[type].rating == 0) continue; // Lowest possible rating, better not to give cargo anymore
    03011
    03012     if (_settings_game.order.selectgoods && st->goods[type].last_speed == 0) continue; // Selectively servicing stations, and not this one
    03013
    03014     if (IsCargoInClass(type, CC_PASSENGERS)) {
    03015       if (st->facilities == FACIL_TRUCK_STOP) continue; // passengers are never served by just a truck stop
    03016     } else {
    03017       if (st->facilities == FACIL_BUS_STOP) continue; // non-passengers are never served by just a bus stop
    03018     }
    03019
    03020     /* This station can be used, add it to st1/st2 */
    03021     if (st1 == NULL || st->goods[type].rating >= best_rating1) {
    03022       st2 = st1; best_rating2 = best_rating1; st1 = st; best_rating1 = st->goods[type].rating;
    03023     } else if (st2 == NULL || st->goods[type].rating >= best_rating2) {
    03024       st2 = st; best_rating2 = st->goods[type].rating;
    03025     }
    03026   }
    03027
    03028   /* no stations around at all? */
    03029   if (st1 == NULL) return 0;
    03030
    03031   if (st2 == NULL) {
    03032     /* only one station around */
    03033     uint moved = amount * best_rating1 / 256 + 1;
    03034     UpdateStationWaiting(st1, type, moved, source_type, source_id);
    03035     return moved;
    03036   }
    03037
    03038   /* several stations around, the best two (highest rating) are in st1 and st2 */
    03039   assert(st1 != NULL);
    03040   assert(st2 != NULL);
    03041   assert(best_rating1 != 0 || best_rating2 != 0);
    03042
    03043   /* the 2nd highest one gets a penalty */
    03044   best_rating2 >>= 1;
    03045
    03046   /* amount given to station 1 */
    03047   uint t = (best_rating1 * (amount + 1)) / (best_rating1 + best_rating2);
    03048
    03049   uint moved = 0;
    03050   if (t != 0) {
    03051     moved = t * best_rating1 / 256 + 1;
    03052     amount -= t;
    03053     UpdateStationWaiting(st1, type, moved, source_type, source_id);
    03054   }
    03055
    03056   if (amount != 0) {
    03057     amount = amount * best_rating2 / 256 + 1;
    03058     moved += amount;
    03059     UpdateStationWaiting(st2, type, amount, source_type, source_id);
    03060   }
    03061
    03062   return moved;
    03063 }
    03064
    03065 void BuildOilRig(TileIndex tile)
    03066 {
    03067   if (!Station::CanAllocateItem()) {
    03068     DEBUG(misc, 0, "Can't allocate station for oilrig at 0x%X, reverting to oilrig only", tile);
    03069     return;
    03070   }
    03071
    03072   Station *st = new Station(tile);
    03073   st->town = ClosestTownFromTile(tile, UINT_MAX);
    03074
    03075   st->string_id = GenerateStationName(st, tile, STATIONNAMING_OILRIG);
    03076
    03077   assert(IsTileType(tile, MP_INDUSTRY));
    03078   DeleteAnimatedTile(tile);
    03079   MakeOilrig(tile, st->index, GetWaterClass(tile));
    03080
    03081   st->owner = OWNER_NONE;
    03082   st->airport_type = AT_OILRIG;
    03083   st->airport_tile = tile;
    03084   st->dock_tile = tile;
    03085   st->facilities = FACIL_AIRPORT | FACIL_DOCK;
    03086   st->build_date = _date;
    03087
    03088   st->rect.BeforeAddTile(tile, StationRect::ADD_FORCE);
    03089
    03090   for (CargoID j = 0; j < NUM_CARGO; j++) {
    03091     st->goods[j].acceptance_pickup = 0;
    03092     st->goods[j].days_since_pickup = 255;
    03093     st->goods[j].rating = INITIAL_STATION_RATING;
    03094     st->goods[j].last_speed = 0;
    03095     st->goods[j].last_age = 255;
    03096   }
    03097
    03098   st->UpdateVirtCoord();
    03099   UpdateStationAcceptance(st, false);
    03100   st->RecomputeIndustriesNear();
    03101 }
    03102
    03103 void DeleteOilRig(TileIndex tile)
    03104 {
    03105   Station *st = Station::GetByTile(tile);
    03106
    03107   MakeWaterKeepingClass(tile, OWNER_NONE);
    03108   MarkTileDirtyByTile(tile);
    03109
    03110   st->dock_tile = INVALID_TILE;
    03111   st->airport_tile = INVALID_TILE;
    03112   st->facilities &= ~(FACIL_AIRPORT | FACIL_DOCK);
    03113   st->airport_flags = 0;
    03114
    03115   st->rect.AfterRemoveTile(st, tile);
    03116
    03117   st->UpdateVirtCoord();
    03118   st->RecomputeIndustriesNear();
    03119   if (!st->IsInUse()) delete st;
    03120 }
    03121
    03122 static void ChangeTileOwner_Station(TileIndex tile, Owner old_owner, Owner new_owner)
    03123 {
    03124   if (IsDriveThroughStopTile(tile)) {
    03125     for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
    03126       /* Update all roadtypes, no matter if they are present */
    03127       if (GetRoadOwner(tile, rt) == old_owner) {
    03128         SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
    03129       }
    03130     }
    03131   }
    03132
    03133   if (!IsTileOwner(tile, old_owner)) return;
    03134
    03135   if (new_owner != INVALID_OWNER) {
    03136     /* for buoys, owner of tile is owner of water, st->owner == OWNER_NONE */
    03137     SetTileOwner(tile, new_owner);
    03138     InvalidateWindowClassesData(WC_STATION_LIST, 0);
    03139   } else {
    03140     if (IsDriveThroughStopTile(tile)) {
    03141       /* Remove the drive-through road stop */
    03142       DoCommand(tile, 0, (GetStationType(tile) == STATION_TRUCK) ? ROADSTOP_TRUCK : ROADSTOP_BUS, DC_EXEC | DC_BANKRUPT, CMD_REMOVE_ROAD_STOP);
    03143       assert(IsTileType(tile, MP_ROAD));
    03144       /* Change owner of tile and all roadtypes */
    03145       ChangeTileOwner(tile, old_owner, new_owner);
    03146     } else {
    03147       DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
    03148       /* Set tile owner of water under (now removed) buoy and dock to OWNER_NONE.
    03149        * Update owner of buoy if it was not removed (was in orders).
    03150        * Do not update when owned by OWNER_WATER (sea and rivers). */
    03151       if ((IsTileType(tile, MP_WATER) || IsBuoyTile(tile)) && IsTileOwner(tile, old_owner)) SetTileOwner(tile, OWNER_NONE);
    03152     }
    03153   }
    03154 }
    03155
    03164 static bool CanRemoveRoadWithStop(TileIndex tile, DoCommandFlag flags)
    03165 {
    03166   /* Yeah... water can always remove stops, right? */
    03167   if (_current_company == OWNER_WATER) return true;
    03168
    03169   Owner road_owner = _current_company;
    03170   Owner tram_owner = _current_company;
    03171
    03172   RoadTypes rts = GetRoadTypes(tile);
    03173   if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
    03174   if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
    03175
    03176   if ((road_owner != OWNER_TOWN && !CheckOwnership(road_owner)) || !CheckOwnership(tram_owner)) return false;
    03177
    03178   return road_owner != OWNER_TOWN || CheckAllowRemoveRoad(tile, GetAnyRoadBits(tile, ROADTYPE_ROAD), OWNER_TOWN, ROADTYPE_ROAD, flags);
    03179 }
    03180
    03181 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags)
    03182 {
    03183   if (flags & DC_AUTO) {
    03184     switch (GetStationType(tile)) {
    03185       default: break;
    03186       case STATION_RAIL:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_RAILROAD);
    03187       case STATION_WAYPOINT: return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
    03188       case STATION_AIRPORT:  return_cmd_error(STR_ERROR_MUST_DEMOLISH_AIRPORT_FIRST);
    03189       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);
    03190       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);
    03191       case STATION_BUOY:     return_cmd_error(STR_ERROR_BUOY_IN_THE_WAY);
    03192       case STATION_DOCK:     return_cmd_error(STR_ERROR_MUST_DEMOLISH_DOCK_FIRST);
    03193       case STATION_OILRIG:
    03194         SetDParam(0, STR_INDUSTRY_NAME_OIL_RIG);
    03195         return_cmd_error(STR_ERROR_UNMOVABLE_OBJECT_IN_THE_WAY);
    03196     }
    03197   }
    03198
    03199   switch (GetStationType(tile)) {
    03200     case STATION_RAIL:     return RemoveRailStation(tile, flags);
    03201     case STATION_WAYPOINT: return RemoveRailWaypoint(tile, flags);
    03202     case STATION_AIRPORT:  return RemoveAirport(tile, flags);
    03203     case STATION_TRUCK:
    03204       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags))
    03205         return_cmd_error(STR_ERROR_MUST_DEMOLISH_TRUCK_STATION_FIRST);
    03206       return RemoveRoadStop(tile, flags);
    03207     case STATION_BUS:
    03208       if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags))
    03209         return_cmd_error(STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST);
    03210       return RemoveRoadStop(tile, flags);
    03211     case STATION_BUOY:     return RemoveBuoy(tile, flags);
    03212     case STATION_DOCK:     return RemoveDock(tile, flags);
    03213     default: break;
    03214   }
    03215
    03216   return CMD_ERROR;
    03217 }
    03218
    03219 static CommandCost TerraformTile_Station(TileIndex tile, DoCommandFlag flags, uint z_new, Slope tileh_new)
    03220 {
    03221   if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
    03222     /* TODO: If you implement newgrf callback 149 'land slope check', you have to decide what to do with it here.
    03223      *       TTDP does not call it.
    03224      */
    03225     if (!IsSteepSlope(tileh_new) && (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new))) {
    03226       switch (GetStationType(tile)) {
    03227         case STATION_WAYPOINT:
    03228         case STATION_RAIL: {
    03229           DiagDirection direction = AxisToDiagDir(GetRailStationAxis(tile));
    03230           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03231           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03232           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03233         }
    03234
    03235         case STATION_AIRPORT:
    03236           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03237
    03238         case STATION_TRUCK:
    03239         case STATION_BUS: {
    03240           DiagDirection direction = GetRoadStopDir(tile);
    03241           if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
    03242           if (IsDriveThroughStopTile(tile)) {
    03243             if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
    03244           }
    03245           return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
    03246         }
    03247
    03248         default: break;
    03249       }
    03250     }
    03251   }
    03252   return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
    03253 }
    03254
    03255
    03256 extern const TileTypeProcs _tile_type_station_procs = {
    03257   DrawTile_Station,           // draw_tile_proc
    03258   GetSlopeZ_Station,          // get_slope_z_proc
    03259   ClearTile_Station,          // clear_tile_proc
    03260   NULL,                       // add_accepted_cargo_proc
    03261   GetTileDesc_Station,        // get_tile_desc_proc
    03262   GetTileTrackStatus_Station, // get_tile_track_status_proc
    03263   ClickTile_Station,          // click_tile_proc
    03264   AnimateTile_Station,        // animate_tile_proc
    03265   TileLoop_Station,           // tile_loop_clear
    03266   ChangeTileOwner_Station,    // change_tile_owner_clear
    03267   NULL,                       // add_produced_cargo_proc
    03268   VehicleEnter_Station,       // vehicle_enter_tile_proc
    03269   GetFoundation_Station,      // get_foundation_proc
    03270   TerraformTile_Station,      // terraform_tile_proc
    03271 };