OpenTTD
station_cmd.cpp
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1 /* $Id: station_cmd.cpp 27893 2017-08-13 18:38:42Z frosch $ */
2 
3 /*
4  * This file is part of OpenTTD.
5  * 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.
6  * 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.
7  * 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/>.
8  */
9 
12 #include "stdafx.h"
13 #include "aircraft.h"
14 #include "bridge_map.h"
15 #include "cmd_helper.h"
16 #include "viewport_func.h"
17 #include "command_func.h"
18 #include "town.h"
19 #include "news_func.h"
20 #include "train.h"
21 #include "ship.h"
22 #include "roadveh.h"
23 #include "industry.h"
24 #include "newgrf_cargo.h"
25 #include "newgrf_debug.h"
26 #include "newgrf_station.h"
27 #include "newgrf_canal.h" /* For the buoy */
29 #include "road_internal.h" /* For drawing catenary/checking road removal */
30 #include "autoslope.h"
31 #include "water.h"
32 #include "strings_func.h"
33 #include "clear_func.h"
34 #include "date_func.h"
35 #include "vehicle_func.h"
36 #include "string_func.h"
37 #include "animated_tile_func.h"
38 #include "elrail_func.h"
39 #include "station_base.h"
40 #include "roadstop_base.h"
41 #include "newgrf_railtype.h"
42 #include "waypoint_base.h"
43 #include "waypoint_func.h"
44 #include "pbs.h"
45 #include "debug.h"
46 #include "core/random_func.hpp"
47 #include "company_base.h"
48 #include "table/airporttile_ids.h"
49 #include "newgrf_airporttiles.h"
50 #include "order_backup.h"
51 #include "newgrf_house.h"
52 #include "company_gui.h"
54 #include "linkgraph/refresh.h"
55 #include "widgets/station_widget.h"
56 
57 #include "table/strings.h"
58 
59 #include "safeguards.h"
60 
66 /* static */ const FlowStat::SharesMap FlowStat::empty_sharesmap;
67 
75 {
76  assert(IsTileType(t, MP_STATION));
77 
78  /* If the tile isn't an airport there's no chance it's a hangar. */
79  if (!IsAirport(t)) return false;
80 
81  const Station *st = Station::GetByTile(t);
82  const AirportSpec *as = st->airport.GetSpec();
83 
84  for (uint i = 0; i < as->nof_depots; i++) {
85  if (st->airport.GetHangarTile(i) == t) return true;
86  }
87 
88  return false;
89 }
90 
98 template <class T>
99 CommandCost GetStationAround(TileArea ta, StationID closest_station, T **st)
100 {
101  ta.tile -= TileDiffXY(1, 1);
102  ta.w += 2;
103  ta.h += 2;
104 
105  /* check around to see if there's any stations there */
106  TILE_AREA_LOOP(tile_cur, ta) {
107  if (IsTileType(tile_cur, MP_STATION)) {
108  StationID t = GetStationIndex(tile_cur);
109  if (!T::IsValidID(t)) continue;
110 
111  if (closest_station == INVALID_STATION) {
112  closest_station = t;
113  } else if (closest_station != t) {
114  return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
115  }
116  }
117  }
118  *st = (closest_station == INVALID_STATION) ? NULL : T::Get(closest_station);
119  return CommandCost();
120 }
121 
127 typedef bool (*CMSAMatcher)(TileIndex tile);
128 
136 {
137  int num = 0;
138 
139  for (int dx = -3; dx <= 3; dx++) {
140  for (int dy = -3; dy <= 3; dy++) {
141  TileIndex t = TileAddWrap(tile, dx, dy);
142  if (t != INVALID_TILE && cmp(t)) num++;
143  }
144  }
145 
146  return num;
147 }
148 
154 static bool CMSAMine(TileIndex tile)
155 {
156  /* No industry */
157  if (!IsTileType(tile, MP_INDUSTRY)) return false;
158 
159  const Industry *ind = Industry::GetByTile(tile);
160 
161  /* No extractive industry */
162  if ((GetIndustrySpec(ind->type)->life_type & INDUSTRYLIFE_EXTRACTIVE) == 0) return false;
163 
164  for (uint i = 0; i < lengthof(ind->produced_cargo); i++) {
165  /* The industry extracts something non-liquid, i.e. no oil or plastic, so it is a mine.
166  * Also the production of passengers and mail is ignored. */
167  if (ind->produced_cargo[i] != CT_INVALID &&
169  return true;
170  }
171  }
172 
173  return false;
174 }
175 
181 static bool CMSAWater(TileIndex tile)
182 {
183  return IsTileType(tile, MP_WATER) && IsWater(tile);
184 }
185 
191 static bool CMSATree(TileIndex tile)
192 {
193  return IsTileType(tile, MP_TREES);
194 }
195 
196 #define M(x) ((x) - STR_SV_STNAME)
197 
198 enum StationNaming {
199  STATIONNAMING_RAIL,
200  STATIONNAMING_ROAD,
201  STATIONNAMING_AIRPORT,
202  STATIONNAMING_OILRIG,
203  STATIONNAMING_DOCK,
204  STATIONNAMING_HELIPORT,
205 };
206 
209  uint32 free_names;
210  bool *indtypes;
211 };
212 
221 static bool FindNearIndustryName(TileIndex tile, void *user_data)
222 {
223  /* All already found industry types */
225  if (!IsTileType(tile, MP_INDUSTRY)) return false;
226 
227  /* If the station name is undefined it means that it doesn't name a station */
228  IndustryType indtype = GetIndustryType(tile);
229  if (GetIndustrySpec(indtype)->station_name == STR_UNDEFINED) return false;
230 
231  /* In all cases if an industry that provides a name is found two of
232  * the standard names will be disabled. */
233  sni->free_names &= ~(1 << M(STR_SV_STNAME_OILFIELD) | 1 << M(STR_SV_STNAME_MINES));
234  return !sni->indtypes[indtype];
235 }
236 
237 static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming name_class)
238 {
239  static const uint32 _gen_station_name_bits[] = {
240  0, // STATIONNAMING_RAIL
241  0, // STATIONNAMING_ROAD
242  1U << M(STR_SV_STNAME_AIRPORT), // STATIONNAMING_AIRPORT
243  1U << M(STR_SV_STNAME_OILFIELD), // STATIONNAMING_OILRIG
244  1U << M(STR_SV_STNAME_DOCKS), // STATIONNAMING_DOCK
245  1U << M(STR_SV_STNAME_HELIPORT), // STATIONNAMING_HELIPORT
246  };
247 
248  const Town *t = st->town;
249  uint32 free_names = UINT32_MAX;
250 
251  bool indtypes[NUM_INDUSTRYTYPES];
252  memset(indtypes, 0, sizeof(indtypes));
253 
254  const Station *s;
255  FOR_ALL_STATIONS(s) {
256  if (s != st && s->town == t) {
257  if (s->indtype != IT_INVALID) {
258  indtypes[s->indtype] = true;
260  if (name != STR_UNDEFINED) {
261  /* Filter for other industrytypes with the same name */
262  for (IndustryType it = 0; it < NUM_INDUSTRYTYPES; it++) {
263  const IndustrySpec *indsp = GetIndustrySpec(it);
264  if (indsp->enabled && indsp->station_name == name) indtypes[it] = true;
265  }
266  }
267  continue;
268  }
269  uint str = M(s->string_id);
270  if (str <= 0x20) {
271  if (str == M(STR_SV_STNAME_FOREST)) {
272  str = M(STR_SV_STNAME_WOODS);
273  }
274  ClrBit(free_names, str);
275  }
276  }
277  }
278 
279  TileIndex indtile = tile;
280  StationNameInformation sni = { free_names, indtypes };
281  if (CircularTileSearch(&indtile, 7, FindNearIndustryName, &sni)) {
282  /* An industry has been found nearby */
283  IndustryType indtype = GetIndustryType(indtile);
284  const IndustrySpec *indsp = GetIndustrySpec(indtype);
285  /* STR_NULL means it only disables oil rig/mines */
286  if (indsp->station_name != STR_NULL) {
287  st->indtype = indtype;
288  return STR_SV_STNAME_FALLBACK;
289  }
290  }
291 
292  /* Oil rigs/mines name could be marked not free by looking for a near by industry. */
293  free_names = sni.free_names;
294 
295  /* check default names */
296  uint32 tmp = free_names & _gen_station_name_bits[name_class];
297  if (tmp != 0) return STR_SV_STNAME + FindFirstBit(tmp);
298 
299  /* check mine? */
300  if (HasBit(free_names, M(STR_SV_STNAME_MINES))) {
301  if (CountMapSquareAround(tile, CMSAMine) >= 2) {
302  return STR_SV_STNAME_MINES;
303  }
304  }
305 
306  /* check close enough to town to get central as name? */
307  if (DistanceMax(tile, t->xy) < 8) {
308  if (HasBit(free_names, M(STR_SV_STNAME))) return STR_SV_STNAME;
309 
310  if (HasBit(free_names, M(STR_SV_STNAME_CENTRAL))) return STR_SV_STNAME_CENTRAL;
311  }
312 
313  /* Check lakeside */
314  if (HasBit(free_names, M(STR_SV_STNAME_LAKESIDE)) &&
315  DistanceFromEdge(tile) < 20 &&
316  CountMapSquareAround(tile, CMSAWater) >= 5) {
317  return STR_SV_STNAME_LAKESIDE;
318  }
319 
320  /* Check woods */
321  if (HasBit(free_names, M(STR_SV_STNAME_WOODS)) && (
322  CountMapSquareAround(tile, CMSATree) >= 8 ||
324  ) {
325  return _settings_game.game_creation.landscape == LT_TROPIC ? STR_SV_STNAME_FOREST : STR_SV_STNAME_WOODS;
326  }
327 
328  /* check elevation compared to town */
329  int z = GetTileZ(tile);
330  int z2 = GetTileZ(t->xy);
331  if (z < z2) {
332  if (HasBit(free_names, M(STR_SV_STNAME_VALLEY))) return STR_SV_STNAME_VALLEY;
333  } else if (z > z2) {
334  if (HasBit(free_names, M(STR_SV_STNAME_HEIGHTS))) return STR_SV_STNAME_HEIGHTS;
335  }
336 
337  /* check direction compared to town */
338  static const int8 _direction_and_table[] = {
339  ~( (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
340  ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
341  ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
342  ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_EAST)) ),
343  };
344 
345  free_names &= _direction_and_table[
346  (TileX(tile) < TileX(t->xy)) +
347  (TileY(tile) < TileY(t->xy)) * 2];
348 
349  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));
350  return (tmp == 0) ? STR_SV_STNAME_FALLBACK : (STR_SV_STNAME + FindFirstBit(tmp));
351 }
352 #undef M
353 
360 {
361  uint threshold = 8;
362  Station *best_station = NULL;
363  Station *st;
364 
365  FOR_ALL_STATIONS(st) {
366  if (!st->IsInUse() && st->owner == _current_company) {
367  uint cur_dist = DistanceManhattan(tile, st->xy);
368 
369  if (cur_dist < threshold) {
370  threshold = cur_dist;
371  best_station = st;
372  }
373  }
374  }
375 
376  return best_station;
377 }
378 
379 
381 {
382  switch (type) {
383  case STATION_RAIL:
384  *ta = this->train_station;
385  return;
386 
387  case STATION_AIRPORT:
388  *ta = this->airport;
389  return;
390 
391  case STATION_TRUCK:
392  *ta = this->truck_station;
393  return;
394 
395  case STATION_BUS:
396  *ta = this->bus_station;
397  return;
398 
399  case STATION_DOCK:
400  case STATION_OILRIG:
401  ta->tile = this->dock_tile;
402  break;
403 
404  default: NOT_REACHED();
405  }
406 
407  ta->w = 1;
408  ta->h = 1;
409 }
410 
415 {
416  Point pt = RemapCoords2(TileX(this->xy) * TILE_SIZE, TileY(this->xy) * TILE_SIZE);
417 
418  pt.y -= 32 * ZOOM_LVL_BASE;
419  if ((this->facilities & FACIL_AIRPORT) && this->airport.type == AT_OILRIG) pt.y -= 16 * ZOOM_LVL_BASE;
420 
421  SetDParam(0, this->index);
422  SetDParam(1, this->facilities);
423  this->sign.UpdatePosition(pt.x, pt.y, STR_VIEWPORT_STATION);
424 
426 }
427 
430 {
431  BaseStation *st;
432 
433  FOR_ALL_BASE_STATIONS(st) {
434  st->UpdateVirtCoord();
435  }
436 }
437 
443 static uint GetAcceptanceMask(const Station *st)
444 {
445  uint mask = 0;
446 
447  for (CargoID i = 0; i < NUM_CARGO; i++) {
448  if (HasBit(st->goods[i].status, GoodsEntry::GES_ACCEPTANCE)) mask |= 1 << i;
449  }
450  return mask;
451 }
452 
457 static void ShowRejectOrAcceptNews(const Station *st, uint num_items, CargoID *cargo, StringID msg)
458 {
459  for (uint i = 0; i < num_items; i++) {
460  SetDParam(i + 1, CargoSpec::Get(cargo[i])->name);
461  }
462 
463  SetDParam(0, st->index);
465 }
466 
474 CargoArray GetProductionAroundTiles(TileIndex tile, int w, int h, int rad)
475 {
476  CargoArray produced;
477 
478  int x = TileX(tile);
479  int y = TileY(tile);
480 
481  /* expand the region by rad tiles on each side
482  * while making sure that we remain inside the board. */
483  int x2 = min(x + w + rad, MapSizeX());
484  int x1 = max(x - rad, 0);
485 
486  int y2 = min(y + h + rad, MapSizeY());
487  int y1 = max(y - rad, 0);
488 
489  assert(x1 < x2);
490  assert(y1 < y2);
491  assert(w > 0);
492  assert(h > 0);
493 
494  TileArea ta(TileXY(x1, y1), TileXY(x2 - 1, y2 - 1));
495 
496  /* Loop over all tiles to get the produced cargo of
497  * everything except industries */
498  TILE_AREA_LOOP(tile, ta) AddProducedCargo(tile, produced);
499 
500  /* Loop over the industries. They produce cargo for
501  * anything that is within 'rad' from their bounding
502  * box. As such if you have e.g. a oil well the tile
503  * area loop might not hit an industry tile while
504  * the industry would produce cargo for the station.
505  */
506  const Industry *i;
507  FOR_ALL_INDUSTRIES(i) {
508  if (!ta.Intersects(i->location)) continue;
509 
510  for (uint j = 0; j < lengthof(i->produced_cargo); j++) {
511  CargoID cargo = i->produced_cargo[j];
512  if (cargo != CT_INVALID) produced[cargo]++;
513  }
514  }
515 
516  return produced;
517 }
518 
527 CargoArray GetAcceptanceAroundTiles(TileIndex tile, int w, int h, int rad, uint32 *always_accepted)
528 {
529  CargoArray acceptance;
530  if (always_accepted != NULL) *always_accepted = 0;
531 
532  int x = TileX(tile);
533  int y = TileY(tile);
534 
535  /* expand the region by rad tiles on each side
536  * while making sure that we remain inside the board. */
537  int x2 = min(x + w + rad, MapSizeX());
538  int y2 = min(y + h + rad, MapSizeY());
539  int x1 = max(x - rad, 0);
540  int y1 = max(y - rad, 0);
541 
542  assert(x1 < x2);
543  assert(y1 < y2);
544  assert(w > 0);
545  assert(h > 0);
546 
547  for (int yc = y1; yc != y2; yc++) {
548  for (int xc = x1; xc != x2; xc++) {
549  TileIndex tile = TileXY(xc, yc);
550  AddAcceptedCargo(tile, acceptance, always_accepted);
551  }
552  }
553 
554  return acceptance;
555 }
556 
562 void UpdateStationAcceptance(Station *st, bool show_msg)
563 {
564  /* old accepted goods types */
565  uint old_acc = GetAcceptanceMask(st);
566 
567  /* And retrieve the acceptance. */
568  CargoArray acceptance;
569  if (!st->rect.IsEmpty()) {
570  acceptance = GetAcceptanceAroundTiles(
571  TileXY(st->rect.left, st->rect.top),
572  st->rect.right - st->rect.left + 1,
573  st->rect.bottom - st->rect.top + 1,
574  st->GetCatchmentRadius(),
575  &st->always_accepted
576  );
577  }
578 
579  /* Adjust in case our station only accepts fewer kinds of goods */
580  for (CargoID i = 0; i < NUM_CARGO; i++) {
581  uint amt = acceptance[i];
582 
583  /* Make sure the station can accept the goods type. */
584  bool is_passengers = IsCargoInClass(i, CC_PASSENGERS);
585  if ((!is_passengers && !(st->facilities & ~FACIL_BUS_STOP)) ||
586  (is_passengers && !(st->facilities & ~FACIL_TRUCK_STOP))) {
587  amt = 0;
588  }
589 
590  GoodsEntry &ge = st->goods[i];
591  SB(ge.status, GoodsEntry::GES_ACCEPTANCE, 1, amt >= 8);
593  (*LinkGraph::Get(ge.link_graph))[ge.node].SetDemand(amt / 8);
594  }
595  }
596 
597  /* Only show a message in case the acceptance was actually changed. */
598  uint new_acc = GetAcceptanceMask(st);
599  if (old_acc == new_acc) return;
600 
601  /* show a message to report that the acceptance was changed? */
602  if (show_msg && st->owner == _local_company && st->IsInUse()) {
603  /* List of accept and reject strings for different number of
604  * cargo types */
605  static const StringID accept_msg[] = {
606  STR_NEWS_STATION_NOW_ACCEPTS_CARGO,
607  STR_NEWS_STATION_NOW_ACCEPTS_CARGO_AND_CARGO,
608  };
609  static const StringID reject_msg[] = {
610  STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO,
611  STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO_OR_CARGO,
612  };
613 
614  /* Array of accepted and rejected cargo types */
615  CargoID accepts[2] = { CT_INVALID, CT_INVALID };
616  CargoID rejects[2] = { CT_INVALID, CT_INVALID };
617  uint num_acc = 0;
618  uint num_rej = 0;
619 
620  /* Test each cargo type to see if its acceptance has changed */
621  for (CargoID i = 0; i < NUM_CARGO; i++) {
622  if (HasBit(new_acc, i)) {
623  if (!HasBit(old_acc, i) && num_acc < lengthof(accepts)) {
624  /* New cargo is accepted */
625  accepts[num_acc++] = i;
626  }
627  } else {
628  if (HasBit(old_acc, i) && num_rej < lengthof(rejects)) {
629  /* Old cargo is no longer accepted */
630  rejects[num_rej++] = i;
631  }
632  }
633  }
634 
635  /* Show news message if there are any changes */
636  if (num_acc > 0) ShowRejectOrAcceptNews(st, num_acc, accepts, accept_msg[num_acc - 1]);
637  if (num_rej > 0) ShowRejectOrAcceptNews(st, num_rej, rejects, reject_msg[num_rej - 1]);
638  }
639 
640  /* redraw the station view since acceptance changed */
642 }
643 
644 static void UpdateStationSignCoord(BaseStation *st)
645 {
646  const StationRect *r = &st->rect;
647 
648  if (r->IsEmpty()) return; // no tiles belong to this station
649 
650  /* clamp sign coord to be inside the station rect */
651  st->xy = TileXY(ClampU(TileX(st->xy), r->left, r->right), ClampU(TileY(st->xy), r->top, r->bottom));
652  st->UpdateVirtCoord();
653 
654  if (!Station::IsExpected(st)) return;
655  Station *full_station = Station::From(st);
656  for (CargoID c = 0; c < NUM_CARGO; ++c) {
657  LinkGraphID lg = full_station->goods[c].link_graph;
658  if (!LinkGraph::IsValidID(lg)) continue;
659  (*LinkGraph::Get(lg))[full_station->goods[c].node].UpdateLocation(st->xy);
660  }
661 }
662 
672 static CommandCost BuildStationPart(Station **st, DoCommandFlag flags, bool reuse, TileArea area, StationNaming name_class)
673 {
674  /* Find a deleted station close to us */
675  if (*st == NULL && reuse) *st = GetClosestDeletedStation(area.tile);
676 
677  if (*st != NULL) {
678  if ((*st)->owner != _current_company) {
679  return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
680  }
681 
682  CommandCost ret = (*st)->rect.BeforeAddRect(area.tile, area.w, area.h, StationRect::ADD_TEST);
683  if (ret.Failed()) return ret;
684  } else {
685  /* allocate and initialize new station */
686  if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
687 
688  if (flags & DC_EXEC) {
689  *st = new Station(area.tile);
690 
691  (*st)->town = ClosestTownFromTile(area.tile, UINT_MAX);
692  (*st)->string_id = GenerateStationName(*st, area.tile, name_class);
693 
695  SetBit((*st)->town->have_ratings, _current_company);
696  }
697  }
698  }
699  return CommandCost();
700 }
701 
709 {
710  if (!st->IsInUse()) {
711  st->delete_ctr = 0;
713  }
714  /* station remains but it probably lost some parts - station sign should stay in the station boundaries */
715  UpdateStationSignCoord(st);
716 }
717 
719 
729 CommandCost CheckBuildableTile(TileIndex tile, uint invalid_dirs, int &allowed_z, bool allow_steep, bool check_bridge = true)
730 {
731  if (check_bridge && IsBridgeAbove(tile)) {
732  return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
733  }
734 
736  if (ret.Failed()) return ret;
737 
738  int z;
739  Slope tileh = GetTileSlope(tile, &z);
740 
741  /* Prohibit building if
742  * 1) The tile is "steep" (i.e. stretches two height levels).
743  * 2) The tile is non-flat and the build_on_slopes switch is disabled.
744  */
745  if ((!allow_steep && IsSteepSlope(tileh)) ||
747  return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
748  }
749 
751  int flat_z = z + GetSlopeMaxZ(tileh);
752  if (tileh != SLOPE_FLAT) {
753  /* Forbid building if the tile faces a slope in a invalid direction. */
754  for (DiagDirection dir = DIAGDIR_BEGIN; dir != DIAGDIR_END; dir++) {
755  if (HasBit(invalid_dirs, dir) && !CanBuildDepotByTileh(dir, tileh)) {
756  return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
757  }
758  }
759  cost.AddCost(_price[PR_BUILD_FOUNDATION]);
760  }
761 
762  /* The level of this tile must be equal to allowed_z. */
763  if (allowed_z < 0) {
764  /* First tile. */
765  allowed_z = flat_z;
766  } else if (allowed_z != flat_z) {
767  return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
768  }
769 
770  return cost;
771 }
772 
780 {
782  int allowed_z = -1;
783 
784  TILE_AREA_LOOP(tile_cur, tile_area) {
785  CommandCost ret = CheckBuildableTile(tile_cur, 0, allowed_z, true);
786  if (ret.Failed()) return ret;
787  cost.AddCost(ret);
788 
789  ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
790  if (ret.Failed()) return ret;
791  cost.AddCost(ret);
792  }
793 
794  return cost;
795 }
796 
811 static CommandCost CheckFlatLandRailStation(TileArea tile_area, DoCommandFlag flags, Axis axis, StationID *station, RailType rt, SmallVector<Train *, 4> &affected_vehicles, StationClassID spec_class, byte spec_index, byte plat_len, byte numtracks)
812 {
814  int allowed_z = -1;
815  uint invalid_dirs = 5 << axis;
816 
817  const StationSpec *statspec = StationClass::Get(spec_class)->GetSpec(spec_index);
818  bool slope_cb = statspec != NULL && HasBit(statspec->callback_mask, CBM_STATION_SLOPE_CHECK);
819 
820  TILE_AREA_LOOP(tile_cur, tile_area) {
821  CommandCost ret = CheckBuildableTile(tile_cur, invalid_dirs, allowed_z, false);
822  if (ret.Failed()) return ret;
823  cost.AddCost(ret);
824 
825  if (slope_cb) {
826  /* Do slope check if requested. */
827  ret = PerformStationTileSlopeCheck(tile_area.tile, tile_cur, statspec, axis, plat_len, numtracks);
828  if (ret.Failed()) return ret;
829  }
830 
831  /* if station is set, then we have special handling to allow building on top of already existing stations.
832  * so station points to INVALID_STATION if we can build on any station.
833  * Or it points to a station if we're only allowed to build on exactly that station. */
834  if (station != NULL && IsTileType(tile_cur, MP_STATION)) {
835  if (!IsRailStation(tile_cur)) {
836  return ClearTile_Station(tile_cur, DC_AUTO); // get error message
837  } else {
838  StationID st = GetStationIndex(tile_cur);
839  if (*station == INVALID_STATION) {
840  *station = st;
841  } else if (*station != st) {
842  return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
843  }
844  }
845  } else {
846  /* Rail type is only valid when building a railway station; if station to
847  * build isn't a rail station it's INVALID_RAILTYPE. */
848  if (rt != INVALID_RAILTYPE &&
849  IsPlainRailTile(tile_cur) && !HasSignals(tile_cur) &&
850  HasPowerOnRail(GetRailType(tile_cur), rt)) {
851  /* Allow overbuilding if the tile:
852  * - has rail, but no signals
853  * - it has exactly one track
854  * - the track is in line with the station
855  * - the current rail type has power on the to-be-built type (e.g. convert normal rail to el rail)
856  */
857  TrackBits tracks = GetTrackBits(tile_cur);
858  Track track = RemoveFirstTrack(&tracks);
859  Track expected_track = HasBit(invalid_dirs, DIAGDIR_NE) ? TRACK_X : TRACK_Y;
860 
861  if (tracks == TRACK_BIT_NONE && track == expected_track) {
862  /* Check for trains having a reservation for this tile. */
863  if (HasBit(GetRailReservationTrackBits(tile_cur), track)) {
864  Train *v = GetTrainForReservation(tile_cur, track);
865  if (v != NULL) {
866  *affected_vehicles.Append() = v;
867  }
868  }
869  CommandCost ret = DoCommand(tile_cur, 0, track, flags, CMD_REMOVE_SINGLE_RAIL);
870  if (ret.Failed()) return ret;
871  cost.AddCost(ret);
872  /* With flags & ~DC_EXEC CmdLandscapeClear would fail since the rail still exists */
873  continue;
874  }
875  }
876  ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
877  if (ret.Failed()) return ret;
878  cost.AddCost(ret);
879  }
880  }
881 
882  return cost;
883 }
884 
897 static CommandCost CheckFlatLandRoadStop(TileArea tile_area, DoCommandFlag flags, uint invalid_dirs, bool is_drive_through, bool is_truck_stop, Axis axis, StationID *station, RoadTypes rts)
898 {
900  int allowed_z = -1;
901 
902  TILE_AREA_LOOP(cur_tile, tile_area) {
903  CommandCost ret = CheckBuildableTile(cur_tile, invalid_dirs, allowed_z, !is_drive_through);
904  if (ret.Failed()) return ret;
905  cost.AddCost(ret);
906 
907  /* If station is set, then we have special handling to allow building on top of already existing stations.
908  * Station points to INVALID_STATION if we can build on any station.
909  * Or it points to a station if we're only allowed to build on exactly that station. */
910  if (station != NULL && IsTileType(cur_tile, MP_STATION)) {
911  if (!IsRoadStop(cur_tile)) {
912  return ClearTile_Station(cur_tile, DC_AUTO); // Get error message.
913  } else {
914  if (is_truck_stop != IsTruckStop(cur_tile) ||
915  is_drive_through != IsDriveThroughStopTile(cur_tile)) {
916  return ClearTile_Station(cur_tile, DC_AUTO); // Get error message.
917  }
918  /* Drive-through station in the wrong direction. */
919  if (is_drive_through && IsDriveThroughStopTile(cur_tile) && DiagDirToAxis(GetRoadStopDir(cur_tile)) != axis){
920  return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
921  }
922  StationID st = GetStationIndex(cur_tile);
923  if (*station == INVALID_STATION) {
924  *station = st;
925  } else if (*station != st) {
926  return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
927  }
928  }
929  } else {
930  bool build_over_road = is_drive_through && IsNormalRoadTile(cur_tile);
931  /* Road bits in the wrong direction. */
932  RoadBits rb = IsNormalRoadTile(cur_tile) ? GetAllRoadBits(cur_tile) : ROAD_NONE;
933  if (build_over_road && (rb & (axis == AXIS_X ? ROAD_Y : ROAD_X)) != 0) {
934  /* Someone was pedantic and *NEEDED* three fracking different error messages. */
935  switch (CountBits(rb)) {
936  case 1:
937  return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
938 
939  case 2:
940  if (rb == ROAD_X || rb == ROAD_Y) return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
941  return_cmd_error(STR_ERROR_DRIVE_THROUGH_CORNER);
942 
943  default: // 3 or 4
944  return_cmd_error(STR_ERROR_DRIVE_THROUGH_JUNCTION);
945  }
946  }
947 
948  RoadTypes cur_rts = IsNormalRoadTile(cur_tile) ? GetRoadTypes(cur_tile) : ROADTYPES_NONE;
949  uint num_roadbits = 0;
950  if (build_over_road) {
951  /* There is a road, check if we can build road+tram stop over it. */
952  if (HasBit(cur_rts, ROADTYPE_ROAD)) {
953  Owner road_owner = GetRoadOwner(cur_tile, ROADTYPE_ROAD);
954  if (road_owner == OWNER_TOWN) {
955  if (!_settings_game.construction.road_stop_on_town_road) return_cmd_error(STR_ERROR_DRIVE_THROUGH_ON_TOWN_ROAD);
957  CommandCost ret = CheckOwnership(road_owner);
958  if (ret.Failed()) return ret;
959  }
960  num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_ROAD));
961  }
962 
963  /* There is a tram, check if we can build road+tram stop over it. */
964  if (HasBit(cur_rts, ROADTYPE_TRAM)) {
965  Owner tram_owner = GetRoadOwner(cur_tile, ROADTYPE_TRAM);
966  if (Company::IsValidID(tram_owner) &&
968  /* Disallow breaking end-of-line of someone else
969  * so trams can still reverse on this tile. */
971  CommandCost ret = CheckOwnership(tram_owner);
972  if (ret.Failed()) return ret;
973  }
974  num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_TRAM));
975  }
976 
977  /* Take into account existing roadbits. */
978  rts |= cur_rts;
979  } else {
980  ret = DoCommand(cur_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
981  if (ret.Failed()) return ret;
982  cost.AddCost(ret);
983  }
984 
985  uint roadbits_to_build = CountBits(rts) * 2 - num_roadbits;
986  cost.AddCost(_price[PR_BUILD_ROAD] * roadbits_to_build);
987  }
988  }
989 
990  return cost;
991 }
992 
1001 {
1002  TileArea cur_ta = st->train_station;
1003 
1004  /* determine new size of train station region.. */
1005  int x = min(TileX(cur_ta.tile), TileX(new_ta.tile));
1006  int y = min(TileY(cur_ta.tile), TileY(new_ta.tile));
1007  new_ta.w = max(TileX(cur_ta.tile) + cur_ta.w, TileX(new_ta.tile) + new_ta.w) - x;
1008  new_ta.h = max(TileY(cur_ta.tile) + cur_ta.h, TileY(new_ta.tile) + new_ta.h) - y;
1009  new_ta.tile = TileXY(x, y);
1010 
1011  /* make sure the final size is not too big. */
1013  return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
1014  }
1015 
1016  return CommandCost();
1017 }
1018 
1019 static inline byte *CreateSingle(byte *layout, int n)
1020 {
1021  int i = n;
1022  do *layout++ = 0; while (--i);
1023  layout[((n - 1) >> 1) - n] = 2;
1024  return layout;
1025 }
1026 
1027 static inline byte *CreateMulti(byte *layout, int n, byte b)
1028 {
1029  int i = n;
1030  do *layout++ = b; while (--i);
1031  if (n > 4) {
1032  layout[0 - n] = 0;
1033  layout[n - 1 - n] = 0;
1034  }
1035  return layout;
1036 }
1037 
1045 void GetStationLayout(byte *layout, int numtracks, int plat_len, const StationSpec *statspec)
1046 {
1047  if (statspec != NULL && statspec->lengths >= plat_len &&
1048  statspec->platforms[plat_len - 1] >= numtracks &&
1049  statspec->layouts[plat_len - 1][numtracks - 1]) {
1050  /* Custom layout defined, follow it. */
1051  memcpy(layout, statspec->layouts[plat_len - 1][numtracks - 1],
1052  plat_len * numtracks);
1053  return;
1054  }
1055 
1056  if (plat_len == 1) {
1057  CreateSingle(layout, numtracks);
1058  } else {
1059  if (numtracks & 1) layout = CreateSingle(layout, plat_len);
1060  numtracks >>= 1;
1061 
1062  while (--numtracks >= 0) {
1063  layout = CreateMulti(layout, plat_len, 4);
1064  layout = CreateMulti(layout, plat_len, 6);
1065  }
1066  }
1067 }
1068 
1080 template <class T, StringID error_message>
1081 CommandCost FindJoiningBaseStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, T **st)
1082 {
1083  assert(*st == NULL);
1084  bool check_surrounding = true;
1085 
1087  if (existing_station != INVALID_STATION) {
1088  if (adjacent && existing_station != station_to_join) {
1089  /* You can't build an adjacent station over the top of one that
1090  * already exists. */
1091  return_cmd_error(error_message);
1092  } else {
1093  /* Extend the current station, and don't check whether it will
1094  * be near any other stations. */
1095  *st = T::GetIfValid(existing_station);
1096  check_surrounding = (*st == NULL);
1097  }
1098  } else {
1099  /* There's no station here. Don't check the tiles surrounding this
1100  * one if the company wanted to build an adjacent station. */
1101  if (adjacent) check_surrounding = false;
1102  }
1103  }
1104 
1105  if (check_surrounding) {
1106  /* Make sure there are no similar stations around us. */
1107  CommandCost ret = GetStationAround(ta, existing_station, st);
1108  if (ret.Failed()) return ret;
1109  }
1110 
1111  /* Distant join */
1112  if (*st == NULL && station_to_join != INVALID_STATION) *st = T::GetIfValid(station_to_join);
1113 
1114  return CommandCost();
1115 }
1116 
1126 static CommandCost FindJoiningStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
1127 {
1128  return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_RAILWAY_STATION_FIRST>(existing_station, station_to_join, adjacent, ta, st);
1129 }
1130 
1140 CommandCost FindJoiningWaypoint(StationID existing_waypoint, StationID waypoint_to_join, bool adjacent, TileArea ta, Waypoint **wp)
1141 {
1142  return FindJoiningBaseStation<Waypoint, STR_ERROR_MUST_REMOVE_RAILWAYPOINT_FIRST>(existing_waypoint, waypoint_to_join, adjacent, ta, wp);
1143 }
1144 
1150 {
1153  v = v->Last();
1155 }
1156 
1162 {
1164  TryPathReserve(v, true, true);
1165  v = v->Last();
1167 }
1168 
1186 CommandCost CmdBuildRailStation(TileIndex tile_org, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1187 {
1188  /* Unpack parameters */
1189  RailType rt = Extract<RailType, 0, 4>(p1);
1190  Axis axis = Extract<Axis, 4, 1>(p1);
1191  byte numtracks = GB(p1, 8, 8);
1192  byte plat_len = GB(p1, 16, 8);
1193  bool adjacent = HasBit(p1, 24);
1194 
1195  StationClassID spec_class = Extract<StationClassID, 0, 8>(p2);
1196  byte spec_index = GB(p2, 8, 8);
1197  StationID station_to_join = GB(p2, 16, 16);
1198 
1199  /* Does the authority allow this? */
1200  CommandCost ret = CheckIfAuthorityAllowsNewStation(tile_org, flags);
1201  if (ret.Failed()) return ret;
1202 
1203  if (!ValParamRailtype(rt)) return CMD_ERROR;
1204 
1205  /* Check if the given station class is valid */
1206  if ((uint)spec_class >= StationClass::GetClassCount() || spec_class == STAT_CLASS_WAYP) return CMD_ERROR;
1207  if (spec_index >= StationClass::Get(spec_class)->GetSpecCount()) return CMD_ERROR;
1208  if (plat_len == 0 || numtracks == 0) return CMD_ERROR;
1209 
1210  int w_org, h_org;
1211  if (axis == AXIS_X) {
1212  w_org = plat_len;
1213  h_org = numtracks;
1214  } else {
1215  h_org = plat_len;
1216  w_org = numtracks;
1217  }
1218 
1219  bool reuse = (station_to_join != NEW_STATION);
1220  if (!reuse) station_to_join = INVALID_STATION;
1221  bool distant_join = (station_to_join != INVALID_STATION);
1222 
1223  if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
1224 
1226 
1227  /* these values are those that will be stored in train_tile and station_platforms */
1228  TileArea new_location(tile_org, w_org, h_org);
1229 
1230  /* Make sure the area below consists of clear tiles. (OR tiles belonging to a certain rail station) */
1231  StationID est = INVALID_STATION;
1232  SmallVector<Train *, 4> affected_vehicles;
1233  /* Clear the land below the station. */
1234  CommandCost cost = CheckFlatLandRailStation(new_location, flags, axis, &est, rt, affected_vehicles, spec_class, spec_index, plat_len, numtracks);
1235  if (cost.Failed()) return cost;
1236  /* Add construction expenses. */
1237  cost.AddCost((numtracks * _price[PR_BUILD_STATION_RAIL] + _price[PR_BUILD_STATION_RAIL_LENGTH]) * plat_len);
1238  cost.AddCost(numtracks * plat_len * RailBuildCost(rt));
1239 
1240  Station *st = NULL;
1241  ret = FindJoiningStation(est, station_to_join, adjacent, new_location, &st);
1242  if (ret.Failed()) return ret;
1243 
1244  ret = BuildStationPart(&st, flags, reuse, new_location, STATIONNAMING_RAIL);
1245  if (ret.Failed()) return ret;
1246 
1247  if (st != NULL && st->train_station.tile != INVALID_TILE) {
1248  CommandCost ret = CanExpandRailStation(st, new_location, axis);
1249  if (ret.Failed()) return ret;
1250  }
1251 
1252  /* Check if we can allocate a custom stationspec to this station */
1253  const StationSpec *statspec = StationClass::Get(spec_class)->GetSpec(spec_index);
1254  int specindex = AllocateSpecToStation(statspec, st, (flags & DC_EXEC) != 0);
1255  if (specindex == -1) return_cmd_error(STR_ERROR_TOO_MANY_STATION_SPECS);
1256 
1257  if (statspec != NULL) {
1258  /* Perform NewStation checks */
1259 
1260  /* Check if the station size is permitted */
1261  if (HasBit(statspec->disallowed_platforms, min(numtracks - 1, 7)) || HasBit(statspec->disallowed_lengths, min(plat_len - 1, 7))) {
1262  return CMD_ERROR;
1263  }
1264 
1265  /* Check if the station is buildable */
1266  if (HasBit(statspec->callback_mask, CBM_STATION_AVAIL)) {
1267  uint16 cb_res = GetStationCallback(CBID_STATION_AVAILABILITY, 0, 0, statspec, NULL, INVALID_TILE);
1268  if (cb_res != CALLBACK_FAILED && !Convert8bitBooleanCallback(statspec->grf_prop.grffile, CBID_STATION_AVAILABILITY, cb_res)) return CMD_ERROR;
1269  }
1270  }
1271 
1272  if (flags & DC_EXEC) {
1273  TileIndexDiff tile_delta;
1274  byte *layout_ptr;
1275  byte numtracks_orig;
1276  Track track;
1277 
1278  st->train_station = new_location;
1279  st->AddFacility(FACIL_TRAIN, new_location.tile);
1280 
1281  st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TRY);
1282 
1283  if (statspec != NULL) {
1284  /* Include this station spec's animation trigger bitmask
1285  * in the station's cached copy. */
1286  st->cached_anim_triggers |= statspec->animation.triggers;
1287  }
1288 
1289  tile_delta = (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
1290  track = AxisToTrack(axis);
1291 
1292  layout_ptr = AllocaM(byte, numtracks * plat_len);
1293  GetStationLayout(layout_ptr, numtracks, plat_len, statspec);
1294 
1295  numtracks_orig = numtracks;
1296 
1297  Company *c = Company::Get(st->owner);
1298  TileIndex tile_track = tile_org;
1299  do {
1300  TileIndex tile = tile_track;
1301  int w = plat_len;
1302  do {
1303  byte layout = *layout_ptr++;
1304  if (IsRailStationTile(tile) && HasStationReservation(tile)) {
1305  /* Check for trains having a reservation for this tile. */
1307  if (v != NULL) {
1308  *affected_vehicles.Append() = v;
1310  }
1311  }
1312 
1313  /* Railtype can change when overbuilding. */
1314  if (IsRailStationTile(tile)) {
1315  if (!IsStationTileBlocked(tile)) c->infrastructure.rail[GetRailType(tile)]--;
1316  c->infrastructure.station--;
1317  }
1318 
1319  /* Remove animation if overbuilding */
1320  DeleteAnimatedTile(tile);
1321  byte old_specindex = HasStationTileRail(tile) ? GetCustomStationSpecIndex(tile) : 0;
1322  MakeRailStation(tile, st->owner, st->index, axis, layout & ~1, rt);
1323  /* Free the spec if we overbuild something */
1324  DeallocateSpecFromStation(st, old_specindex);
1325 
1326  SetCustomStationSpecIndex(tile, specindex);
1327  SetStationTileRandomBits(tile, GB(Random(), 0, 4));
1328  SetAnimationFrame(tile, 0);
1329 
1330  if (!IsStationTileBlocked(tile)) c->infrastructure.rail[rt]++;
1331  c->infrastructure.station++;
1332 
1333  if (statspec != NULL) {
1334  /* Use a fixed axis for GetPlatformInfo as our platforms / numtracks are always the right way around */
1335  uint32 platinfo = GetPlatformInfo(AXIS_X, GetStationGfx(tile), plat_len, numtracks_orig, plat_len - w, numtracks_orig - numtracks, false);
1336 
1337  /* As the station is not yet completely finished, the station does not yet exist. */
1338  uint16 callback = GetStationCallback(CBID_STATION_TILE_LAYOUT, platinfo, 0, statspec, NULL, tile);
1339  if (callback != CALLBACK_FAILED) {
1340  if (callback < 8) {
1341  SetStationGfx(tile, (callback & ~1) + axis);
1342  } else {
1344  }
1345  }
1346 
1347  /* Trigger station animation -- after building? */
1348  TriggerStationAnimation(st, tile, SAT_BUILT);
1349  }
1350 
1351  tile += tile_delta;
1352  } while (--w);
1353  AddTrackToSignalBuffer(tile_track, track, _current_company);
1354  YapfNotifyTrackLayoutChange(tile_track, track);
1355  tile_track += tile_delta ^ TileDiffXY(1, 1); // perpendicular to tile_delta
1356  } while (--numtracks);
1357 
1358  for (uint i = 0; i < affected_vehicles.Length(); ++i) {
1359  /* Restore reservations of trains. */
1360  RestoreTrainReservation(affected_vehicles[i]);
1361  }
1362 
1363  /* Check whether we need to expand the reservation of trains already on the station. */
1364  TileArea update_reservation_area;
1365  if (axis == AXIS_X) {
1366  update_reservation_area = TileArea(tile_org, 1, numtracks_orig);
1367  } else {
1368  update_reservation_area = TileArea(tile_org, numtracks_orig, 1);
1369  }
1370 
1371  TILE_AREA_LOOP(tile, update_reservation_area) {
1372  /* Don't even try to make eye candy parts reserved. */
1373  if (IsStationTileBlocked(tile)) continue;
1374 
1375  DiagDirection dir = AxisToDiagDir(axis);
1376  TileIndexDiff tile_offset = TileOffsByDiagDir(dir);
1377  TileIndex platform_begin = tile;
1378  TileIndex platform_end = tile;
1379 
1380  /* We can only account for tiles that are reachable from this tile, so ignore primarily blocked tiles while finding the platform begin and end. */
1381  for (TileIndex next_tile = platform_begin - tile_offset; IsCompatibleTrainStationTile(next_tile, platform_begin); next_tile -= tile_offset) {
1382  platform_begin = next_tile;
1383  }
1384  for (TileIndex next_tile = platform_end + tile_offset; IsCompatibleTrainStationTile(next_tile, platform_end); next_tile += tile_offset) {
1385  platform_end = next_tile;
1386  }
1387 
1388  /* If there is at least on reservation on the platform, we reserve the whole platform. */
1389  bool reservation = false;
1390  for (TileIndex t = platform_begin; !reservation && t <= platform_end; t += tile_offset) {
1391  reservation = HasStationReservation(t);
1392  }
1393 
1394  if (reservation) {
1395  SetRailStationPlatformReservation(platform_begin, dir, true);
1396  }
1397  }
1398 
1399  st->MarkTilesDirty(false);
1400  st->UpdateVirtCoord();
1401  UpdateStationAcceptance(st, false);
1407  }
1408 
1409  return cost;
1410 }
1411 
1412 static void MakeRailStationAreaSmaller(BaseStation *st)
1413 {
1414  TileArea ta = st->train_station;
1415 
1416 restart:
1417 
1418  /* too small? */
1419  if (ta.w != 0 && ta.h != 0) {
1420  /* check the left side, x = constant, y changes */
1421  for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(0, i));) {
1422  /* the left side is unused? */
1423  if (++i == ta.h) {
1424  ta.tile += TileDiffXY(1, 0);
1425  ta.w--;
1426  goto restart;
1427  }
1428  }
1429 
1430  /* check the right side, x = constant, y changes */
1431  for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(ta.w - 1, i));) {
1432  /* the right side is unused? */
1433  if (++i == ta.h) {
1434  ta.w--;
1435  goto restart;
1436  }
1437  }
1438 
1439  /* check the upper side, y = constant, x changes */
1440  for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, 0));) {
1441  /* the left side is unused? */
1442  if (++i == ta.w) {
1443  ta.tile += TileDiffXY(0, 1);
1444  ta.h--;
1445  goto restart;
1446  }
1447  }
1448 
1449  /* check the lower side, y = constant, x changes */
1450  for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, ta.h - 1));) {
1451  /* the left side is unused? */
1452  if (++i == ta.w) {
1453  ta.h--;
1454  goto restart;
1455  }
1456  }
1457  } else {
1458  ta.Clear();
1459  }
1460 
1461  st->train_station = ta;
1462 }
1463 
1474 template <class T>
1475 CommandCost RemoveFromRailBaseStation(TileArea ta, SmallVector<T *, 4> &affected_stations, DoCommandFlag flags, Money removal_cost, bool keep_rail)
1476 {
1477  /* Count of the number of tiles removed */
1478  int quantity = 0;
1479  CommandCost total_cost(EXPENSES_CONSTRUCTION);
1480  /* Accumulator for the errors seen during clearing. If no errors happen,
1481  * and the quantity is 0 there is no station. Otherwise it will be one
1482  * of the other error that got accumulated. */
1484 
1485  /* Do the action for every tile into the area */
1486  TILE_AREA_LOOP(tile, ta) {
1487  /* Make sure the specified tile is a rail station */
1488  if (!HasStationTileRail(tile)) continue;
1489 
1490  /* If there is a vehicle on ground, do not allow to remove (flood) the tile */
1492  error.AddCost(ret);
1493  if (ret.Failed()) continue;
1494 
1495  /* Check ownership of station */
1496  T *st = T::GetByTile(tile);
1497  if (st == NULL) continue;
1498 
1499  if (_current_company != OWNER_WATER) {
1500  CommandCost ret = CheckOwnership(st->owner);
1501  error.AddCost(ret);
1502  if (ret.Failed()) continue;
1503  }
1504 
1505  /* If we reached here, the tile is valid so increase the quantity of tiles we will remove */
1506  quantity++;
1507 
1508  if (keep_rail || IsStationTileBlocked(tile)) {
1509  /* Don't refund the 'steel' of the track when we keep the
1510  * rail, or when the tile didn't have any rail at all. */
1511  total_cost.AddCost(-_price[PR_CLEAR_RAIL]);
1512  }
1513 
1514  if (flags & DC_EXEC) {
1515  /* read variables before the station tile is removed */
1516  uint specindex = GetCustomStationSpecIndex(tile);
1517  Track track = GetRailStationTrack(tile);
1518  Owner owner = GetTileOwner(tile);
1519  RailType rt = GetRailType(tile);
1520  Train *v = NULL;
1521 
1522  if (HasStationReservation(tile)) {
1523  v = GetTrainForReservation(tile, track);
1524  if (v != NULL) FreeTrainReservation(v);
1525  }
1526 
1527  bool build_rail = keep_rail && !IsStationTileBlocked(tile);
1528  if (!build_rail && !IsStationTileBlocked(tile)) Company::Get(owner)->infrastructure.rail[rt]--;
1529 
1530  DoClearSquare(tile);
1531  DeleteNewGRFInspectWindow(GSF_STATIONS, tile);
1532  if (build_rail) MakeRailNormal(tile, owner, TrackToTrackBits(track), rt);
1533  Company::Get(owner)->infrastructure.station--;
1535 
1536  st->rect.AfterRemoveTile(st, tile);
1537  AddTrackToSignalBuffer(tile, track, owner);
1538  YapfNotifyTrackLayoutChange(tile, track);
1539 
1540  DeallocateSpecFromStation(st, specindex);
1541 
1542  affected_stations.Include(st);
1543 
1544  if (v != NULL) RestoreTrainReservation(v);
1545  }
1546  }
1547 
1548  if (quantity == 0) return error.Failed() ? error : CommandCost(STR_ERROR_THERE_IS_NO_STATION);
1549 
1550  for (T **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
1551  T *st = *stp;
1552 
1553  /* now we need to make the "spanned" area of the railway station smaller
1554  * if we deleted something at the edges.
1555  * we also need to adjust train_tile. */
1556  MakeRailStationAreaSmaller(st);
1557  UpdateStationSignCoord(st);
1558 
1559  /* if we deleted the whole station, delete the train facility. */
1560  if (st->train_station.tile == INVALID_TILE) {
1561  st->facilities &= ~FACIL_TRAIN;
1563  st->UpdateVirtCoord();
1565  }
1566  }
1567 
1568  total_cost.AddCost(quantity * removal_cost);
1569  return total_cost;
1570 }
1571 
1583 CommandCost CmdRemoveFromRailStation(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1584 {
1585  TileIndex end = p1 == 0 ? start : p1;
1586  if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
1587 
1588  TileArea ta(start, end);
1589  SmallVector<Station *, 4> affected_stations;
1590 
1591  CommandCost ret = RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_STATION_RAIL], HasBit(p2, 0));
1592  if (ret.Failed()) return ret;
1593 
1594  /* Do all station specific functions here. */
1595  for (Station **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
1596  Station *st = *stp;
1597 
1599  st->MarkTilesDirty(false);
1601  }
1602 
1603  /* Now apply the rail cost to the number that we deleted */
1604  return ret;
1605 }
1606 
1618 CommandCost CmdRemoveFromRailWaypoint(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1619 {
1620  TileIndex end = p1 == 0 ? start : p1;
1621  if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
1622 
1623  TileArea ta(start, end);
1624  SmallVector<Waypoint *, 4> affected_stations;
1625 
1626  return RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_WAYPOINT_RAIL], HasBit(p2, 0));
1627 }
1628 
1629 
1638 template <class T>
1640 {
1641  /* Current company owns the station? */
1642  if (_current_company != OWNER_WATER) {
1643  CommandCost ret = CheckOwnership(st->owner);
1644  if (ret.Failed()) return ret;
1645  }
1646 
1647  /* determine width and height of platforms */
1648  TileArea ta = st->train_station;
1649 
1650  assert(ta.w != 0 && ta.h != 0);
1651 
1653  /* clear all areas of the station */
1654  TILE_AREA_LOOP(tile, ta) {
1655  /* only remove tiles that are actually train station tiles */
1656  if (st->TileBelongsToRailStation(tile)) {
1657  SmallVector<T*, 4> affected_stations; // dummy
1658  CommandCost ret = RemoveFromRailBaseStation(TileArea(tile, 1, 1), affected_stations, flags, removal_cost, false);
1659  if (ret.Failed()) return ret;
1660  cost.AddCost(ret);
1661  }
1662  }
1663 
1664  return cost;
1665 }
1666 
1674 {
1675  /* if there is flooding, remove platforms tile by tile */
1676  if (_current_company == OWNER_WATER) {
1677  return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_STATION);
1678  }
1679 
1680  Station *st = Station::GetByTile(tile);
1681  CommandCost cost = RemoveRailStation(st, flags, _price[PR_CLEAR_STATION_RAIL]);
1682 
1683  if (flags & DC_EXEC) st->RecomputeIndustriesNear();
1684 
1685  return cost;
1686 }
1687 
1695 {
1696  /* if there is flooding, remove waypoints tile by tile */
1697  if (_current_company == OWNER_WATER) {
1698  return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_WAYPOINT);
1699  }
1700 
1701  return RemoveRailStation(Waypoint::GetByTile(tile), flags, _price[PR_CLEAR_WAYPOINT_RAIL]);
1702 }
1703 
1704 
1710 static RoadStop **FindRoadStopSpot(bool truck_station, Station *st)
1711 {
1712  RoadStop **primary_stop = (truck_station) ? &st->truck_stops : &st->bus_stops;
1713 
1714  if (*primary_stop == NULL) {
1715  /* we have no roadstop of the type yet, so write a "primary stop" */
1716  return primary_stop;
1717  } else {
1718  /* there are stops already, so append to the end of the list */
1719  RoadStop *stop = *primary_stop;
1720  while (stop->next != NULL) stop = stop->next;
1721  return &stop->next;
1722  }
1723 }
1724 
1726 
1736 static CommandCost FindJoiningRoadStop(StationID existing_stop, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
1737 {
1738  return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_ROAD_STOP_FIRST>(existing_stop, station_to_join, adjacent, ta, st);
1739 }
1740 
1757 CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1758 {
1759  bool type = HasBit(p2, 0);
1760  bool is_drive_through = HasBit(p2, 1);
1761  RoadTypes rts = Extract<RoadTypes, 2, 2>(p2);
1762  StationID station_to_join = GB(p2, 16, 16);
1763  bool reuse = (station_to_join != NEW_STATION);
1764  if (!reuse) station_to_join = INVALID_STATION;
1765  bool distant_join = (station_to_join != INVALID_STATION);
1766 
1767  uint8 width = (uint8)GB(p1, 0, 8);
1768  uint8 lenght = (uint8)GB(p1, 8, 8);
1769 
1770  /* Check if the requested road stop is too big */
1771  if (width > _settings_game.station.station_spread || lenght > _settings_game.station.station_spread) return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
1772  /* Check for incorrect width / length. */
1773  if (width == 0 || lenght == 0) return CMD_ERROR;
1774  /* Check if the first tile and the last tile are valid */
1775  if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, lenght - 1) == INVALID_TILE) return CMD_ERROR;
1776 
1777  TileArea roadstop_area(tile, width, lenght);
1778 
1779  if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
1780 
1781  if (!HasExactlyOneBit(rts) || !HasRoadTypesAvail(_current_company, rts)) return CMD_ERROR;
1782 
1783  /* Trams only have drive through stops */
1784  if (!is_drive_through && HasBit(rts, ROADTYPE_TRAM)) return CMD_ERROR;
1785 
1786  DiagDirection ddir;
1787  Axis axis;
1788  if (is_drive_through) {
1789  /* By definition axis is valid, due to there being 2 axes and reading 1 bit. */
1790  axis = Extract<Axis, 6, 1>(p2);
1791  ddir = AxisToDiagDir(axis);
1792  } else {
1793  /* By definition ddir is valid, due to there being 4 diagonal directions and reading 2 bits. */
1794  ddir = Extract<DiagDirection, 6, 2>(p2);
1795  axis = DiagDirToAxis(ddir);
1796  }
1797 
1798  CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
1799  if (ret.Failed()) return ret;
1800 
1801  /* Total road stop cost. */
1802  CommandCost cost(EXPENSES_CONSTRUCTION, roadstop_area.w * roadstop_area.h * _price[type ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
1803  StationID est = INVALID_STATION;
1804  ret = CheckFlatLandRoadStop(roadstop_area, flags, is_drive_through ? 5 << axis : 1 << ddir, is_drive_through, type, axis, &est, rts);
1805  if (ret.Failed()) return ret;
1806  cost.AddCost(ret);
1807 
1808  Station *st = NULL;
1809  ret = FindJoiningRoadStop(est, station_to_join, HasBit(p2, 5), roadstop_area, &st);
1810  if (ret.Failed()) return ret;
1811 
1812  /* Check if this number of road stops can be allocated. */
1813  if (!RoadStop::CanAllocateItem(roadstop_area.w * roadstop_area.h)) return_cmd_error(type ? STR_ERROR_TOO_MANY_TRUCK_STOPS : STR_ERROR_TOO_MANY_BUS_STOPS);
1814 
1815  ret = BuildStationPart(&st, flags, reuse, roadstop_area, STATIONNAMING_ROAD);
1816  if (ret.Failed()) return ret;
1817 
1818  if (flags & DC_EXEC) {
1819  /* Check every tile in the area. */
1820  TILE_AREA_LOOP(cur_tile, roadstop_area) {
1821  RoadTypes cur_rts = GetRoadTypes(cur_tile);
1822  Owner road_owner = HasBit(cur_rts, ROADTYPE_ROAD) ? GetRoadOwner(cur_tile, ROADTYPE_ROAD) : _current_company;
1823  Owner tram_owner = HasBit(cur_rts, ROADTYPE_TRAM) ? GetRoadOwner(cur_tile, ROADTYPE_TRAM) : _current_company;
1824 
1825  if (IsTileType(cur_tile, MP_STATION) && IsRoadStop(cur_tile)) {
1826  RemoveRoadStop(cur_tile, flags);
1827  }
1828 
1829  RoadStop *road_stop = new RoadStop(cur_tile);
1830  /* Insert into linked list of RoadStops. */
1831  RoadStop **currstop = FindRoadStopSpot(type, st);
1832  *currstop = road_stop;
1833 
1834  if (type) {
1835  st->truck_station.Add(cur_tile);
1836  } else {
1837  st->bus_station.Add(cur_tile);
1838  }
1839 
1840  /* Initialize an empty station. */
1841  st->AddFacility((type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, cur_tile);
1842 
1843  st->rect.BeforeAddTile(cur_tile, StationRect::ADD_TRY);
1844 
1845  RoadStopType rs_type = type ? ROADSTOP_TRUCK : ROADSTOP_BUS;
1846  if (is_drive_through) {
1847  /* Update company infrastructure counts. If the current tile is a normal
1848  * road tile, count only the new road bits needed to get a full diagonal road. */
1849  RoadType rt;
1850  FOR_EACH_SET_ROADTYPE(rt, cur_rts | rts) {
1851  Company *c = Company::GetIfValid(rt == ROADTYPE_ROAD ? road_owner : tram_owner);
1852  if (c != NULL) {
1853  c->infrastructure.road[rt] += 2 - (IsNormalRoadTile(cur_tile) && HasBit(cur_rts, rt) ? CountBits(GetRoadBits(cur_tile, rt)) : 0);
1855  }
1856  }
1857 
1858  MakeDriveThroughRoadStop(cur_tile, st->owner, road_owner, tram_owner, st->index, rs_type, rts | cur_rts, axis);
1859  road_stop->MakeDriveThrough();
1860  } else {
1861  /* Non-drive-through stop never overbuild and always count as two road bits. */
1862  Company::Get(st->owner)->infrastructure.road[FIND_FIRST_BIT(rts)] += 2;
1863  MakeRoadStop(cur_tile, st->owner, st->index, rs_type, rts, ddir);
1864  }
1865  Company::Get(st->owner)->infrastructure.station++;
1867 
1868  MarkTileDirtyByTile(cur_tile);
1869  }
1870  }
1871 
1872  if (st != NULL) {
1873  st->UpdateVirtCoord();
1874  UpdateStationAcceptance(st, false);
1879  }
1880  return cost;
1881 }
1882 
1883 
1884 static Vehicle *ClearRoadStopStatusEnum(Vehicle *v, void *)
1885 {
1886  if (v->type == VEH_ROAD) {
1887  /* Okay... we are a road vehicle on a drive through road stop.
1888  * But that road stop has just been removed, so we need to make
1889  * sure we are in a valid state... however, vehicles can also
1890  * turn on road stop tiles, so only clear the 'road stop' state
1891  * bits and only when the state was 'in road stop', otherwise
1892  * we'll end up clearing the turn around bits. */
1893  RoadVehicle *rv = RoadVehicle::From(v);
1895  }
1896 
1897  return NULL;
1898 }
1899 
1900 
1908 {
1909  Station *st = Station::GetByTile(tile);
1910 
1911  if (_current_company != OWNER_WATER) {
1912  CommandCost ret = CheckOwnership(st->owner);
1913  if (ret.Failed()) return ret;
1914  }
1915 
1916  bool is_truck = IsTruckStop(tile);
1917 
1918  RoadStop **primary_stop;
1919  RoadStop *cur_stop;
1920  if (is_truck) { // truck stop
1921  primary_stop = &st->truck_stops;
1922  cur_stop = RoadStop::GetByTile(tile, ROADSTOP_TRUCK);
1923  } else {
1924  primary_stop = &st->bus_stops;
1925  cur_stop = RoadStop::GetByTile(tile, ROADSTOP_BUS);
1926  }
1927 
1928  assert(cur_stop != NULL);
1929 
1930  /* don't do the check for drive-through road stops when company bankrupts */
1931  if (IsDriveThroughStopTile(tile) && (flags & DC_BANKRUPT)) {
1932  /* remove the 'going through road stop' status from all vehicles on that tile */
1933  if (flags & DC_EXEC) FindVehicleOnPos(tile, NULL, &ClearRoadStopStatusEnum);
1934  } else {
1936  if (ret.Failed()) return ret;
1937  }
1938 
1939  if (flags & DC_EXEC) {
1940  if (*primary_stop == cur_stop) {
1941  /* removed the first stop in the list */
1942  *primary_stop = cur_stop->next;
1943  /* removed the only stop? */
1944  if (*primary_stop == NULL) {
1945  st->facilities &= (is_truck ? ~FACIL_TRUCK_STOP : ~FACIL_BUS_STOP);
1946  }
1947  } else {
1948  /* tell the predecessor in the list to skip this stop */
1949  RoadStop *pred = *primary_stop;
1950  while (pred->next != cur_stop) pred = pred->next;
1951  pred->next = cur_stop->next;
1952  }
1953 
1954  /* Update company infrastructure counts. */
1955  RoadType rt;
1956  FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(tile)) {
1957  Company *c = Company::GetIfValid(GetRoadOwner(tile, rt));
1958  if (c != NULL) {
1959  c->infrastructure.road[rt] -= 2;
1961  }
1962  }
1963  Company::Get(st->owner)->infrastructure.station--;
1965 
1966  if (IsDriveThroughStopTile(tile)) {
1967  /* Clears the tile for us */
1968  cur_stop->ClearDriveThrough();
1969  } else {
1970  DoClearSquare(tile);
1971  }
1972 
1974  delete cur_stop;
1975 
1976  /* Make sure no vehicle is going to the old roadstop */
1977  RoadVehicle *v;
1978  FOR_ALL_ROADVEHICLES(v) {
1979  if (v->First() == v && v->current_order.IsType(OT_GOTO_STATION) &&
1980  v->dest_tile == tile) {
1982  }
1983  }
1984 
1985  st->rect.AfterRemoveTile(st, tile);
1986 
1987  st->UpdateVirtCoord();
1990 
1991  /* Update the tile area of the truck/bus stop */
1992  if (is_truck) {
1993  st->truck_station.Clear();
1994  for (const RoadStop *rs = st->truck_stops; rs != NULL; rs = rs->next) st->truck_station.Add(rs->xy);
1995  } else {
1996  st->bus_station.Clear();
1997  for (const RoadStop *rs = st->bus_stops; rs != NULL; rs = rs->next) st->bus_station.Add(rs->xy);
1998  }
1999  }
2000 
2001  return CommandCost(EXPENSES_CONSTRUCTION, _price[is_truck ? PR_CLEAR_STATION_TRUCK : PR_CLEAR_STATION_BUS]);
2002 }
2003 
2015 CommandCost CmdRemoveRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2016 {
2017  uint8 width = (uint8)GB(p1, 0, 8);
2018  uint8 height = (uint8)GB(p1, 8, 8);
2019  bool keep_drive_through_roads = !HasBit(p2, 1);
2020 
2021  /* Check for incorrect width / height. */
2022  if (width == 0 || height == 0) return CMD_ERROR;
2023  /* Check if the first tile and the last tile are valid */
2024  if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, height - 1) == INVALID_TILE) return CMD_ERROR;
2025  /* Bankrupting company is not supposed to remove roads, there may be road vehicles. */
2026  if (!keep_drive_through_roads && (flags & DC_BANKRUPT)) return CMD_ERROR;
2027 
2028  TileArea roadstop_area(tile, width, height);
2029 
2031  CommandCost last_error(STR_ERROR_THERE_IS_NO_STATION);
2032  bool had_success = false;
2033 
2034  TILE_AREA_LOOP(cur_tile, roadstop_area) {
2035  /* Make sure the specified tile is a road stop of the correct type */
2036  if (!IsTileType(cur_tile, MP_STATION) || !IsRoadStop(cur_tile) || (uint32)GetRoadStopType(cur_tile) != GB(p2, 0, 1)) continue;
2037 
2038  /* Save information on to-be-restored roads before the stop is removed. */
2039  RoadTypes rts = ROADTYPES_NONE;
2040  RoadBits road_bits = ROAD_NONE;
2041  Owner road_owner[] = { OWNER_NONE, OWNER_NONE };
2042  assert_compile(lengthof(road_owner) == ROADTYPE_END);
2043  if (IsDriveThroughStopTile(cur_tile)) {
2044  RoadType rt;
2045  FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(cur_tile)) {
2046  road_owner[rt] = GetRoadOwner(cur_tile, rt);
2047  /* If we don't want to preserve our roads then restore only roads of others. */
2048  if (keep_drive_through_roads || road_owner[rt] != _current_company) SetBit(rts, rt);
2049  }
2050  road_bits = AxisToRoadBits(DiagDirToAxis(GetRoadStopDir(cur_tile)));
2051  }
2052 
2053  CommandCost ret = RemoveRoadStop(cur_tile, flags);
2054  if (ret.Failed()) {
2055  last_error = ret;
2056  continue;
2057  }
2058  cost.AddCost(ret);
2059  had_success = true;
2060 
2061  /* Restore roads. */
2062  if ((flags & DC_EXEC) && rts != ROADTYPES_NONE) {
2063  MakeRoadNormal(cur_tile, road_bits, rts, ClosestTownFromTile(cur_tile, UINT_MAX)->index,
2064  road_owner[ROADTYPE_ROAD], road_owner[ROADTYPE_TRAM]);
2065 
2066  /* Update company infrastructure counts. */
2067  RoadType rt;
2068  FOR_EACH_SET_ROADTYPE(rt, rts) {
2069  Company *c = Company::GetIfValid(GetRoadOwner(cur_tile, rt));
2070  if (c != NULL) {
2071  c->infrastructure.road[rt] += CountBits(road_bits);
2073  }
2074  }
2075  }
2076  }
2077 
2078  return had_success ? cost : last_error;
2079 }
2080 
2088 {
2089  uint mindist = UINT_MAX;
2090 
2091  for (TileIndex cur_tile = it; cur_tile != INVALID_TILE; cur_tile = ++it) {
2092  mindist = min(mindist, DistanceManhattan(town_tile, cur_tile));
2093  }
2094 
2095  return mindist;
2096 }
2097 
2108 {
2109  /* 0 cannot be accounted, and 1 is the lowest that can be reduced from town.
2110  * So no need to go any further*/
2111  if (as->noise_level < 2) return as->noise_level;
2112 
2113  uint distance = GetMinimalAirportDistanceToTile(it, town_tile);
2114 
2115  /* The steps for measuring noise reduction are based on the "magical" (and arbitrary) 8 base distance
2116  * adding the town_council_tolerance 4 times, as a way to graduate, depending of the tolerance.
2117  * Basically, it says that the less tolerant a town is, the bigger the distance before
2118  * an actual decrease can be granted */
2119  uint8 town_tolerance_distance = 8 + (_settings_game.difficulty.town_council_tolerance * 4);
2120 
2121  /* now, we want to have the distance segmented using the distance judged bareable by town
2122  * This will give us the coefficient of reduction the distance provides. */
2123  uint noise_reduction = distance / town_tolerance_distance;
2124 
2125  /* If the noise reduction equals the airport noise itself, don't give it for free.
2126  * Otherwise, simply reduce the airport's level. */
2127  return noise_reduction >= as->noise_level ? 1 : as->noise_level - noise_reduction;
2128 }
2129 
2138 {
2139  Town *t, *nearest = NULL;
2140  uint add = as->size_x + as->size_y - 2; // GetMinimalAirportDistanceToTile can differ from DistanceManhattan by this much
2141  uint mindist = UINT_MAX - add; // prevent overflow
2142  FOR_ALL_TOWNS(t) {
2143  if (DistanceManhattan(t->xy, it) < mindist + add) { // avoid calling GetMinimalAirportDistanceToTile too often
2144  TileIterator *copy = it.Clone();
2145  uint dist = GetMinimalAirportDistanceToTile(*copy, t->xy);
2146  delete copy;
2147  if (dist < mindist) {
2148  nearest = t;
2149  mindist = dist;
2150  }
2151  }
2152  }
2153 
2154  return nearest;
2155 }
2156 
2157 
2160 {
2161  Town *t;
2162  const Station *st;
2163 
2164  FOR_ALL_TOWNS(t) t->noise_reached = 0;
2165 
2166  FOR_ALL_STATIONS(st) {
2167  if (st->airport.tile != INVALID_TILE && st->airport.type != AT_OILRIG) {
2168  const AirportSpec *as = st->airport.GetSpec();
2169  AirportTileIterator it(st);
2170  Town *nearest = AirportGetNearestTown(as, it);
2171  nearest->noise_reached += GetAirportNoiseLevelForTown(as, it, nearest->xy);
2172  }
2173  }
2174 }
2175 
2189 CommandCost CmdBuildAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2190 {
2191  StationID station_to_join = GB(p2, 16, 16);
2192  bool reuse = (station_to_join != NEW_STATION);
2193  if (!reuse) station_to_join = INVALID_STATION;
2194  bool distant_join = (station_to_join != INVALID_STATION);
2195  byte airport_type = GB(p1, 0, 8);
2196  byte layout = GB(p1, 8, 8);
2197 
2198  if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
2199 
2200  if (airport_type >= NUM_AIRPORTS) return CMD_ERROR;
2201 
2202  CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
2203  if (ret.Failed()) return ret;
2204 
2205  /* Check if a valid, buildable airport was chosen for construction */
2206  const AirportSpec *as = AirportSpec::Get(airport_type);
2207  if (!as->IsAvailable() || layout >= as->num_table) return CMD_ERROR;
2208 
2209  Direction rotation = as->rotation[layout];
2210  int w = as->size_x;
2211  int h = as->size_y;
2212  if (rotation == DIR_E || rotation == DIR_W) Swap(w, h);
2213  TileArea airport_area = TileArea(tile, w, h);
2214 
2216  return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
2217  }
2218 
2219  CommandCost cost = CheckFlatLand(airport_area, flags);
2220  if (cost.Failed()) return cost;
2221 
2222  /* The noise level is the noise from the airport and reduce it to account for the distance to the town center. */
2223  AirportTileTableIterator iter(as->table[layout], tile);
2224  Town *nearest = AirportGetNearestTown(as, iter);
2225  uint newnoise_level = GetAirportNoiseLevelForTown(as, iter, nearest->xy);
2226 
2227  /* Check if local auth would allow a new airport */
2228  StringID authority_refuse_message = STR_NULL;
2229  Town *authority_refuse_town = NULL;
2230 
2232  /* do not allow to build a new airport if this raise the town noise over the maximum allowed by town */
2233  if ((nearest->noise_reached + newnoise_level) > nearest->MaxTownNoise()) {
2234  authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_NOISE;
2235  authority_refuse_town = nearest;
2236  }
2237  } else {
2238  Town *t = ClosestTownFromTile(tile, UINT_MAX);
2239  uint num = 0;
2240  const Station *st;
2241  FOR_ALL_STATIONS(st) {
2242  if (st->town == t && (st->facilities & FACIL_AIRPORT) && st->airport.type != AT_OILRIG) num++;
2243  }
2244  if (num >= 2) {
2245  authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_AIRPORT;
2246  authority_refuse_town = t;
2247  }
2248  }
2249 
2250  if (authority_refuse_message != STR_NULL) {
2251  SetDParam(0, authority_refuse_town->index);
2252  return_cmd_error(authority_refuse_message);
2253  }
2254 
2255  Station *st = NULL;
2256  ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 0), airport_area, &st);
2257  if (ret.Failed()) return ret;
2258 
2259  /* Distant join */
2260  if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
2261 
2262  ret = BuildStationPart(&st, flags, reuse, airport_area, (GetAirport(airport_type)->flags & AirportFTAClass::AIRPLANES) ? STATIONNAMING_AIRPORT : STATIONNAMING_HELIPORT);
2263  if (ret.Failed()) return ret;
2264 
2265  if (st != NULL && st->airport.tile != INVALID_TILE) {
2266  return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_AIRPORT);
2267  }
2268 
2269  for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
2270  cost.AddCost(_price[PR_BUILD_STATION_AIRPORT]);
2271  }
2272 
2273  if (flags & DC_EXEC) {
2274  /* Always add the noise, so there will be no need to recalculate when option toggles */
2275  nearest->noise_reached += newnoise_level;
2276 
2277  st->AddFacility(FACIL_AIRPORT, tile);
2278  st->airport.type = airport_type;
2279  st->airport.layout = layout;
2280  st->airport.flags = 0;
2281  st->airport.rotation = rotation;
2282 
2283  st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TRY);
2284 
2285  for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
2286  MakeAirport(iter, st->owner, st->index, iter.GetStationGfx(), WATER_CLASS_INVALID);
2287  SetStationTileRandomBits(iter, GB(Random(), 0, 4));
2288  st->airport.Add(iter);
2289 
2291  }
2292 
2293  /* Only call the animation trigger after all tiles have been built */
2294  for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
2295  AirportTileAnimationTrigger(st, iter, AAT_BUILT);
2296  }
2297 
2299 
2300  Company::Get(st->owner)->infrastructure.airport++;
2302 
2303  st->UpdateVirtCoord();
2304  UpdateStationAcceptance(st, false);
2309 
2312  }
2313  }
2314 
2315  return cost;
2316 }
2317 
2325 {
2326  Station *st = Station::GetByTile(tile);
2327 
2328  if (_current_company != OWNER_WATER) {
2329  CommandCost ret = CheckOwnership(st->owner);
2330  if (ret.Failed()) return ret;
2331  }
2332 
2333  tile = st->airport.tile;
2334 
2336 
2337  const Aircraft *a;
2338  FOR_ALL_AIRCRAFT(a) {
2339  if (!a->IsNormalAircraft()) continue;
2340  if (a->targetairport == st->index && a->state != FLYING) return CMD_ERROR;
2341  }
2342 
2343  if (flags & DC_EXEC) {
2344  const AirportSpec *as = st->airport.GetSpec();
2345  /* The noise level is the noise from the airport and reduce it to account for the distance to the town center.
2346  * And as for construction, always remove it, even if the setting is not set, in order to avoid the
2347  * need of recalculation */
2348  AirportTileIterator it(st);
2349  Town *nearest = AirportGetNearestTown(as, it);
2350  nearest->noise_reached -= GetAirportNoiseLevelForTown(as, it, nearest->xy);
2351  }
2352 
2353  TILE_AREA_LOOP(tile_cur, st->airport) {
2354  if (!st->TileBelongsToAirport(tile_cur)) continue;
2355 
2356  CommandCost ret = EnsureNoVehicleOnGround(tile_cur);
2357  if (ret.Failed()) return ret;
2358 
2359  cost.AddCost(_price[PR_CLEAR_STATION_AIRPORT]);
2360 
2361  if (flags & DC_EXEC) {
2362  if (IsHangarTile(tile_cur)) OrderBackup::Reset(tile_cur, false);
2363  DeleteAnimatedTile(tile_cur);
2364  DoClearSquare(tile_cur);
2365  DeleteNewGRFInspectWindow(GSF_AIRPORTTILES, tile_cur);
2366  }
2367  }
2368 
2369  if (flags & DC_EXEC) {
2370  /* Clear the persistent storage. */
2371  delete st->airport.psa;
2372 
2373  for (uint i = 0; i < st->airport.GetNumHangars(); ++i) {
2376  );
2377  }
2378 
2379  st->rect.AfterRemoveRect(st, st->airport);
2380 
2381  st->airport.Clear();
2382  st->facilities &= ~FACIL_AIRPORT;
2383 
2385 
2388  }
2389 
2390  Company::Get(st->owner)->infrastructure.airport--;
2392 
2393  st->UpdateVirtCoord();
2396  DeleteNewGRFInspectWindow(GSF_AIRPORTS, st->index);
2397  }
2398 
2399  return cost;
2400 }
2401 
2411 CommandCost CmdOpenCloseAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2412 {
2413  if (!Station::IsValidID(p1)) return CMD_ERROR;
2414  Station *st = Station::Get(p1);
2415 
2416  if (!(st->facilities & FACIL_AIRPORT) || st->owner == OWNER_NONE) return CMD_ERROR;
2417 
2418  CommandCost ret = CheckOwnership(st->owner);
2419  if (ret.Failed()) return ret;
2420 
2421  if (flags & DC_EXEC) {
2424  }
2425  return CommandCost();
2426 }
2427 
2434 bool HasStationInUse(StationID station, bool include_company, CompanyID company)
2435 {
2436  const Vehicle *v;
2437  FOR_ALL_VEHICLES(v) {
2438  if ((v->owner == company) == include_company) {
2439  const Order *order;
2440  FOR_VEHICLE_ORDERS(v, order) {
2441  if ((order->IsType(OT_GOTO_STATION) || order->IsType(OT_GOTO_WAYPOINT)) && order->GetDestination() == station) {
2442  return true;
2443  }
2444  }
2445  }
2446  }
2447  return false;
2448 }
2449 
2450 static const TileIndexDiffC _dock_tileoffs_chkaround[] = {
2451  {-1, 0},
2452  { 0, 0},
2453  { 0, 0},
2454  { 0, -1}
2455 };
2456 static const byte _dock_w_chk[4] = { 2, 1, 2, 1 };
2457 static const byte _dock_h_chk[4] = { 1, 2, 1, 2 };
2458 
2468 CommandCost CmdBuildDock(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2469 {
2470  StationID station_to_join = GB(p2, 16, 16);
2471  bool reuse = (station_to_join != NEW_STATION);
2472  if (!reuse) station_to_join = INVALID_STATION;
2473  bool distant_join = (station_to_join != INVALID_STATION);
2474 
2475  if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
2476 
2478  if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2479  direction = ReverseDiagDir(direction);
2480 
2481  /* Docks cannot be placed on rapids */
2482  if (HasTileWaterGround(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2483 
2484  CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
2485  if (ret.Failed()) return ret;
2486 
2487  if (IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
2488 
2489  ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
2490  if (ret.Failed()) return ret;
2491 
2492  TileIndex tile_cur = tile + TileOffsByDiagDir(direction);
2493 
2494  if (!IsTileType(tile_cur, MP_WATER) || !IsTileFlat(tile_cur)) {
2495  return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2496  }
2497 
2498  if (IsBridgeAbove(tile_cur)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
2499 
2500  /* Get the water class of the water tile before it is cleared.*/
2501  WaterClass wc = GetWaterClass(tile_cur);
2502 
2503  ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
2504  if (ret.Failed()) return ret;
2505 
2506  tile_cur += TileOffsByDiagDir(direction);
2507  if (!IsTileType(tile_cur, MP_WATER) || !IsTileFlat(tile_cur)) {
2508  return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2509  }
2510 
2511  TileArea dock_area = TileArea(tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
2512  _dock_w_chk[direction], _dock_h_chk[direction]);
2513 
2514  /* middle */
2515  Station *st = NULL;
2516  ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p1, 0), dock_area, &st);
2517  if (ret.Failed()) return ret;
2518 
2519  /* Distant join */
2520  if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
2521 
2522  ret = BuildStationPart(&st, flags, reuse, dock_area, STATIONNAMING_DOCK);
2523  if (ret.Failed()) return ret;
2524 
2525  if (st != NULL && st->dock_tile != INVALID_TILE) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_DOCK);
2526 
2527  if (flags & DC_EXEC) {
2528  st->dock_tile = tile;
2529  st->AddFacility(FACIL_DOCK, tile);
2530 
2531  st->rect.BeforeAddRect(dock_area.tile, dock_area.w, dock_area.h, StationRect::ADD_TRY);
2532 
2533  /* If the water part of the dock is on a canal, update infrastructure counts.
2534  * This is needed as we've unconditionally cleared that tile before. */
2535  if (wc == WATER_CLASS_CANAL) {
2536  Company::Get(st->owner)->infrastructure.water++;
2537  }
2538  Company::Get(st->owner)->infrastructure.station += 2;
2540 
2541  MakeDock(tile, st->owner, st->index, direction, wc);
2542 
2543  st->UpdateVirtCoord();
2544  UpdateStationAcceptance(st, false);
2549  }
2550 
2551  return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_STATION_DOCK]);
2552 }
2553 
2561 {
2562  Station *st = Station::GetByTile(tile);
2563  CommandCost ret = CheckOwnership(st->owner);
2564  if (ret.Failed()) return ret;
2565 
2566  TileIndex docking_location = TILE_ADD(st->dock_tile, ToTileIndexDiff(GetDockOffset(st->dock_tile)));
2567 
2568  TileIndex tile1 = st->dock_tile;
2569  TileIndex tile2 = tile1 + TileOffsByDiagDir(GetDockDirection(tile1));
2570 
2571  ret = EnsureNoVehicleOnGround(tile1);
2572  if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile2);
2573  if (ret.Failed()) return ret;
2574 
2575  if (flags & DC_EXEC) {
2576  DoClearSquare(tile1);
2577  MarkTileDirtyByTile(tile1);
2578  MakeWaterKeepingClass(tile2, st->owner);
2579 
2580  st->rect.AfterRemoveTile(st, tile1);
2581  st->rect.AfterRemoveTile(st, tile2);
2582 
2583  st->dock_tile = INVALID_TILE;
2584  st->facilities &= ~FACIL_DOCK;
2585 
2586  Company::Get(st->owner)->infrastructure.station -= 2;
2588 
2590  st->UpdateVirtCoord();
2593 
2594  /* All ships that were going to our station, can't go to it anymore.
2595  * Just clear the order, then automatically the next appropriate order
2596  * will be selected and in case of no appropriate order it will just
2597  * wander around the world. */
2598  Ship *s;
2599  FOR_ALL_SHIPS(s) {
2600  if (s->current_order.IsType(OT_LOADING) && s->tile == docking_location) {
2601  s->LeaveStation();
2602  }
2603 
2604  if (s->dest_tile == docking_location) {
2605  s->dest_tile = 0;
2606  s->current_order.Free();
2607  }
2608  }
2609  }
2610 
2611  return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_STATION_DOCK]);
2612 }
2613 
2614 #include "table/station_land.h"
2615 
2616 const DrawTileSprites *GetStationTileLayout(StationType st, byte gfx)
2617 {
2618  return &_station_display_datas[st][gfx];
2619 }
2620 
2630 bool SplitGroundSpriteForOverlay(const TileInfo *ti, SpriteID *ground, RailTrackOffset *overlay_offset)
2631 {
2632  bool snow_desert;
2633  switch (*ground) {
2634  case SPR_RAIL_TRACK_X:
2635  snow_desert = false;
2636  *overlay_offset = RTO_X;
2637  break;
2638 
2639  case SPR_RAIL_TRACK_Y:
2640  snow_desert = false;
2641  *overlay_offset = RTO_Y;
2642  break;
2643 
2644  case SPR_RAIL_TRACK_X_SNOW:
2645  snow_desert = true;
2646  *overlay_offset = RTO_X;
2647  break;
2648 
2649  case SPR_RAIL_TRACK_Y_SNOW:
2650  snow_desert = true;
2651  *overlay_offset = RTO_Y;
2652  break;
2653 
2654  default:
2655  return false;
2656  }
2657 
2658  if (ti != NULL) {
2659  /* Decide snow/desert from tile */
2661  case LT_ARCTIC:
2662  snow_desert = (uint)ti->z > GetSnowLine() * TILE_HEIGHT;
2663  break;
2664 
2665  case LT_TROPIC:
2666  snow_desert = GetTropicZone(ti->tile) == TROPICZONE_DESERT;
2667  break;
2668 
2669  default:
2670  break;
2671  }
2672  }
2673 
2674  *ground = snow_desert ? SPR_FLAT_SNOW_DESERT_TILE : SPR_FLAT_GRASS_TILE;
2675  return true;
2676 }
2677 
2678 static void DrawTile_Station(TileInfo *ti)
2679 {
2680  const NewGRFSpriteLayout *layout = NULL;
2681  DrawTileSprites tmp_rail_layout;
2682  const DrawTileSprites *t = NULL;
2683  RoadTypes roadtypes;
2684  int32 total_offset;
2685  const RailtypeInfo *rti = NULL;
2686  uint32 relocation = 0;
2687  uint32 ground_relocation = 0;
2688  BaseStation *st = NULL;
2689  const StationSpec *statspec = NULL;
2690  uint tile_layout = 0;
2691 
2692  if (HasStationRail(ti->tile)) {
2693  rti = GetRailTypeInfo(GetRailType(ti->tile));
2694  roadtypes = ROADTYPES_NONE;
2695  total_offset = rti->GetRailtypeSpriteOffset();
2696 
2697  if (IsCustomStationSpecIndex(ti->tile)) {
2698  /* look for customization */
2699  st = BaseStation::GetByTile(ti->tile);
2700  statspec = st->speclist[GetCustomStationSpecIndex(ti->tile)].spec;
2701 
2702  if (statspec != NULL) {
2703  tile_layout = GetStationGfx(ti->tile);
2704 
2706  uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0, 0, statspec, st, ti->tile);
2707  if (callback != CALLBACK_FAILED) tile_layout = (callback & ~1) + GetRailStationAxis(ti->tile);
2708  }
2709 
2710  /* Ensure the chosen tile layout is valid for this custom station */
2711  if (statspec->renderdata != NULL) {
2712  layout = &statspec->renderdata[tile_layout < statspec->tiles ? tile_layout : (uint)GetRailStationAxis(ti->tile)];
2713  if (!layout->NeedsPreprocessing()) {
2714  t = layout;
2715  layout = NULL;
2716  }
2717  }
2718  }
2719  }
2720  } else {
2721  roadtypes = IsRoadStop(ti->tile) ? GetRoadTypes(ti->tile) : ROADTYPES_NONE;
2722  total_offset = 0;
2723  }
2724 
2725  StationGfx gfx = GetStationGfx(ti->tile);
2726  if (IsAirport(ti->tile)) {
2727  gfx = GetAirportGfx(ti->tile);
2728  if (gfx >= NEW_AIRPORTTILE_OFFSET) {
2729  const AirportTileSpec *ats = AirportTileSpec::Get(gfx);
2730  if (ats->grf_prop.spritegroup[0] != NULL && DrawNewAirportTile(ti, Station::GetByTile(ti->tile), gfx, ats)) {
2731  return;
2732  }
2733  /* No sprite group (or no valid one) found, meaning no graphics associated.
2734  * Use the substitute one instead */
2735  assert(ats->grf_prop.subst_id != INVALID_AIRPORTTILE);
2736  gfx = ats->grf_prop.subst_id;
2737  }
2738  switch (gfx) {
2739  case APT_RADAR_GRASS_FENCE_SW:
2740  t = &_station_display_datas_airport_radar_grass_fence_sw[GetAnimationFrame(ti->tile)];
2741  break;
2742  case APT_GRASS_FENCE_NE_FLAG:
2743  t = &_station_display_datas_airport_flag_grass_fence_ne[GetAnimationFrame(ti->tile)];
2744  break;
2745  case APT_RADAR_FENCE_SW:
2746  t = &_station_display_datas_airport_radar_fence_sw[GetAnimationFrame(ti->tile)];
2747  break;
2748  case APT_RADAR_FENCE_NE:
2749  t = &_station_display_datas_airport_radar_fence_ne[GetAnimationFrame(ti->tile)];
2750  break;
2751  case APT_GRASS_FENCE_NE_FLAG_2:
2752  t = &_station_display_datas_airport_flag_grass_fence_ne_2[GetAnimationFrame(ti->tile)];
2753  break;
2754  }
2755  }
2756 
2757  Owner owner = GetTileOwner(ti->tile);
2758 
2759  PaletteID palette;
2760  if (Company::IsValidID(owner)) {
2761  palette = COMPANY_SPRITE_COLOUR(owner);
2762  } else {
2763  /* Some stations are not owner by a company, namely oil rigs */
2764  palette = PALETTE_TO_GREY;
2765  }
2766 
2767  if (layout == NULL && (t == NULL || t->seq == NULL)) t = GetStationTileLayout(GetStationType(ti->tile), gfx);
2768 
2769  /* don't show foundation for docks */
2770  if (ti->tileh != SLOPE_FLAT && !IsDock(ti->tile)) {
2771  if (statspec != NULL && HasBit(statspec->flags, SSF_CUSTOM_FOUNDATIONS)) {
2772  /* Station has custom foundations.
2773  * Check whether the foundation continues beyond the tile's upper sides. */
2774  uint edge_info = 0;
2775  int z;
2776  Slope slope = GetFoundationPixelSlope(ti->tile, &z);
2777  if (!HasFoundationNW(ti->tile, slope, z)) SetBit(edge_info, 0);
2778  if (!HasFoundationNE(ti->tile, slope, z)) SetBit(edge_info, 1);
2779  SpriteID image = GetCustomStationFoundationRelocation(statspec, st, ti->tile, tile_layout, edge_info);
2780  if (image == 0) goto draw_default_foundation;
2781 
2782  if (HasBit(statspec->flags, SSF_EXTENDED_FOUNDATIONS)) {
2783  /* Station provides extended foundations. */
2784 
2785  static const uint8 foundation_parts[] = {
2786  0, 0, 0, 0, // Invalid, Invalid, Invalid, SLOPE_SW
2787  0, 1, 2, 3, // Invalid, SLOPE_EW, SLOPE_SE, SLOPE_WSE
2788  0, 4, 5, 6, // Invalid, SLOPE_NW, SLOPE_NS, SLOPE_NWS
2789  7, 8, 9 // SLOPE_NE, SLOPE_ENW, SLOPE_SEN
2790  };
2791 
2792  AddSortableSpriteToDraw(image + foundation_parts[ti->tileh], PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
2793  } else {
2794  /* Draw simple foundations, built up from 8 possible foundation sprites. */
2795 
2796  /* Each set bit represents one of the eight composite sprites to be drawn.
2797  * 'Invalid' entries will not drawn but are included for completeness. */
2798  static const uint8 composite_foundation_parts[] = {
2799  /* Invalid (00000000), Invalid (11010001), Invalid (11100100), SLOPE_SW (11100000) */
2800  0x00, 0xD1, 0xE4, 0xE0,
2801  /* Invalid (11001010), SLOPE_EW (11001001), SLOPE_SE (11000100), SLOPE_WSE (11000000) */
2802  0xCA, 0xC9, 0xC4, 0xC0,
2803  /* Invalid (11010010), SLOPE_NW (10010001), SLOPE_NS (11100100), SLOPE_NWS (10100000) */
2804  0xD2, 0x91, 0xE4, 0xA0,
2805  /* SLOPE_NE (01001010), SLOPE_ENW (00001001), SLOPE_SEN (01000100) */
2806  0x4A, 0x09, 0x44
2807  };
2808 
2809  uint8 parts = composite_foundation_parts[ti->tileh];
2810 
2811  /* If foundations continue beyond the tile's upper sides then
2812  * mask out the last two pieces. */
2813  if (HasBit(edge_info, 0)) ClrBit(parts, 6);
2814  if (HasBit(edge_info, 1)) ClrBit(parts, 7);
2815 
2816  if (parts == 0) {
2817  /* We always have to draw at least one sprite to make sure there is a boundingbox and a sprite with the
2818  * correct offset for the childsprites.
2819  * So, draw the (completely empty) sprite of the default foundations. */
2820  goto draw_default_foundation;
2821  }
2822 
2824  for (int i = 0; i < 8; i++) {
2825  if (HasBit(parts, i)) {
2826  AddSortableSpriteToDraw(image + i, PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
2827  }
2828  }
2829  EndSpriteCombine();
2830  }
2831 
2832  OffsetGroundSprite(31, 1);
2834  } else {
2835 draw_default_foundation:
2837  }
2838  }
2839 
2840  if (IsBuoy(ti->tile)) {
2841  DrawWaterClassGround(ti);
2842  SpriteID sprite = GetCanalSprite(CF_BUOY, ti->tile);
2843  if (sprite != 0) total_offset = sprite - SPR_IMG_BUOY;
2844  } else if (IsDock(ti->tile) || (IsOilRig(ti->tile) && IsTileOnWater(ti->tile))) {
2845  if (ti->tileh == SLOPE_FLAT) {
2846  DrawWaterClassGround(ti);
2847  } else {
2848  assert(IsDock(ti->tile));
2849  TileIndex water_tile = ti->tile + TileOffsByDiagDir(GetDockDirection(ti->tile));
2850  WaterClass wc = GetWaterClass(water_tile);
2851  if (wc == WATER_CLASS_SEA) {
2852  DrawShoreTile(ti->tileh);
2853  } else {
2854  DrawClearLandTile(ti, 3);
2855  }
2856  }
2857  } else {
2858  if (layout != NULL) {
2859  /* Sprite layout which needs preprocessing */
2860  bool separate_ground = HasBit(statspec->flags, SSF_SEPARATE_GROUND);
2861  uint32 var10_values = layout->PrepareLayout(total_offset, rti->fallback_railtype, 0, 0, separate_ground);
2862  uint8 var10;
2863  FOR_EACH_SET_BIT(var10, var10_values) {
2864  uint32 var10_relocation = GetCustomStationRelocation(statspec, st, ti->tile, var10);
2865  layout->ProcessRegisters(var10, var10_relocation, separate_ground);
2866  }
2867  tmp_rail_layout.seq = layout->GetLayout(&tmp_rail_layout.ground);
2868  t = &tmp_rail_layout;
2869  total_offset = 0;
2870  } else if (statspec != NULL) {
2871  /* Simple sprite layout */
2872  ground_relocation = relocation = GetCustomStationRelocation(statspec, st, ti->tile, 0);
2873  if (HasBit(statspec->flags, SSF_SEPARATE_GROUND)) {
2874  ground_relocation = GetCustomStationRelocation(statspec, st, ti->tile, 1);
2875  }
2876  ground_relocation += rti->fallback_railtype;
2877  }
2878 
2879  SpriteID image = t->ground.sprite;
2880  PaletteID pal = t->ground.pal;
2881  RailTrackOffset overlay_offset;
2882  if (rti != NULL && rti->UsesOverlay() && SplitGroundSpriteForOverlay(ti, &image, &overlay_offset)) {
2883  SpriteID ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND);
2884  DrawGroundSprite(image, PAL_NONE);
2885  DrawGroundSprite(ground + overlay_offset, PAL_NONE);
2886 
2887  if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationReservation(ti->tile)) {
2888  SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
2889  DrawGroundSprite(overlay + overlay_offset, PALETTE_CRASH);
2890  }
2891  } else {
2892  image += HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? ground_relocation : total_offset;
2893  if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += ground_relocation;
2894  DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, palette));
2895 
2896  /* PBS debugging, draw reserved tracks darker */
2897  if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationRail(ti->tile) && HasStationReservation(ti->tile)) {
2898  const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
2900  }
2901  }
2902  }
2903 
2905 
2906  if (HasBit(roadtypes, ROADTYPE_TRAM)) {
2907  Axis axis = GetRoadStopDir(ti->tile) == DIAGDIR_NE ? AXIS_X : AXIS_Y;
2908  DrawGroundSprite((HasBit(roadtypes, ROADTYPE_ROAD) ? SPR_TRAMWAY_OVERLAY : SPR_TRAMWAY_TRAM) + (axis ^ 1), PAL_NONE);
2909  DrawRoadCatenary(ti, axis == AXIS_X ? ROAD_X : ROAD_Y);
2910  }
2911 
2912  if (IsRailWaypoint(ti->tile)) {
2913  /* Don't offset the waypoint graphics; they're always the same. */
2914  total_offset = 0;
2915  }
2916 
2917  DrawRailTileSeq(ti, t, TO_BUILDINGS, total_offset, relocation, palette);
2918 }
2919 
2920 void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, RoadType roadtype, int image)
2921 {
2922  int32 total_offset = 0;
2923  PaletteID pal = COMPANY_SPRITE_COLOUR(_local_company);
2924  const DrawTileSprites *t = GetStationTileLayout(st, image);
2925  const RailtypeInfo *rti = NULL;
2926 
2927  if (railtype != INVALID_RAILTYPE) {
2928  rti = GetRailTypeInfo(railtype);
2929  total_offset = rti->GetRailtypeSpriteOffset();
2930  }
2931 
2932  SpriteID img = t->ground.sprite;
2933  RailTrackOffset overlay_offset;
2934  if (rti != NULL && rti->UsesOverlay() && SplitGroundSpriteForOverlay(NULL, &img, &overlay_offset)) {
2936  DrawSprite(img, PAL_NONE, x, y);
2937  DrawSprite(ground + overlay_offset, PAL_NONE, x, y);
2938  } else {
2939  DrawSprite(img + total_offset, HasBit(img, PALETTE_MODIFIER_COLOUR) ? pal : PAL_NONE, x, y);
2940  }
2941 
2942  if (roadtype == ROADTYPE_TRAM) {
2943  DrawSprite(SPR_TRAMWAY_TRAM + (t->ground.sprite == SPR_ROAD_PAVED_STRAIGHT_X ? 1 : 0), PAL_NONE, x, y);
2944  }
2945 
2946  /* Default waypoint has no railtype specific sprites */
2947  DrawRailTileSeqInGUI(x, y, t, st == STATION_WAYPOINT ? 0 : total_offset, 0, pal);
2948 }
2949 
2950 static int GetSlopePixelZ_Station(TileIndex tile, uint x, uint y)
2951 {
2952  return GetTileMaxPixelZ(tile);
2953 }
2954 
2955 static Foundation GetFoundation_Station(TileIndex tile, Slope tileh)
2956 {
2957  return FlatteningFoundation(tileh);
2958 }
2959 
2960 static void GetTileDesc_Station(TileIndex tile, TileDesc *td)
2961 {
2962  td->owner[0] = GetTileOwner(tile);
2963  if (IsDriveThroughStopTile(tile)) {
2964  Owner road_owner = INVALID_OWNER;
2965  Owner tram_owner = INVALID_OWNER;
2966  RoadTypes rts = GetRoadTypes(tile);
2967  if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
2968  if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
2969 
2970  /* Is there a mix of owners? */
2971  if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
2972  (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
2973  uint i = 1;
2974  if (road_owner != INVALID_OWNER) {
2975  td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
2976  td->owner[i] = road_owner;
2977  i++;
2978  }
2979  if (tram_owner != INVALID_OWNER) {
2980  td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
2981  td->owner[i] = tram_owner;
2982  }
2983  }
2984  }
2986 
2987  if (HasStationTileRail(tile)) {
2988  const StationSpec *spec = GetStationSpec(tile);
2989 
2990  if (spec != NULL) {
2992  td->station_name = spec->name;
2993 
2994  if (spec->grf_prop.grffile != NULL) {
2995  const GRFConfig *gc = GetGRFConfig(spec->grf_prop.grffile->grfid);
2996  td->grf = gc->GetName();
2997  }
2998  }
2999 
3000  const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
3001  td->rail_speed = rti->max_speed;
3002  td->railtype = rti->strings.name;
3003  }
3004 
3005  if (IsAirport(tile)) {
3006  const AirportSpec *as = Station::GetByTile(tile)->airport.GetSpec();
3008  td->airport_name = as->name;
3009 
3010  const AirportTileSpec *ats = AirportTileSpec::GetByTile(tile);
3011  td->airport_tile_name = ats->name;
3012 
3013  if (as->grf_prop.grffile != NULL) {
3014  const GRFConfig *gc = GetGRFConfig(as->grf_prop.grffile->grfid);
3015  td->grf = gc->GetName();
3016  } else if (ats->grf_prop.grffile != NULL) {
3017  const GRFConfig *gc = GetGRFConfig(ats->grf_prop.grffile->grfid);
3018  td->grf = gc->GetName();
3019  }
3020  }
3021 
3022  StringID str;
3023  switch (GetStationType(tile)) {
3024  default: NOT_REACHED();
3025  case STATION_RAIL: str = STR_LAI_STATION_DESCRIPTION_RAILROAD_STATION; break;
3026  case STATION_AIRPORT:
3027  str = (IsHangar(tile) ? STR_LAI_STATION_DESCRIPTION_AIRCRAFT_HANGAR : STR_LAI_STATION_DESCRIPTION_AIRPORT);
3028  break;
3029  case STATION_TRUCK: str = STR_LAI_STATION_DESCRIPTION_TRUCK_LOADING_AREA; break;
3030  case STATION_BUS: str = STR_LAI_STATION_DESCRIPTION_BUS_STATION; break;
3031  case STATION_OILRIG: str = STR_INDUSTRY_NAME_OIL_RIG; break;
3032  case STATION_DOCK: str = STR_LAI_STATION_DESCRIPTION_SHIP_DOCK; break;
3033  case STATION_BUOY: str = STR_LAI_STATION_DESCRIPTION_BUOY; break;
3034  case STATION_WAYPOINT: str = STR_LAI_STATION_DESCRIPTION_WAYPOINT; break;
3035  }
3036  td->str = str;
3037 }
3038 
3039 
3040 static TrackStatus GetTileTrackStatus_Station(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
3041 {
3042  TrackBits trackbits = TRACK_BIT_NONE;
3043 
3044  switch (mode) {
3045  case TRANSPORT_RAIL:
3046  if (HasStationRail(tile) && !IsStationTileBlocked(tile)) {
3047  trackbits = TrackToTrackBits(GetRailStationTrack(tile));
3048  }
3049  break;
3050 
3051  case TRANSPORT_WATER:
3052  /* buoy is coded as a station, it is always on open water */
3053  if (IsBuoy(tile)) {
3054  trackbits = TRACK_BIT_ALL;
3055  /* remove tracks that connect NE map edge */
3056  if (TileX(tile) == 0) trackbits &= ~(TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_RIGHT);
3057  /* remove tracks that connect NW map edge */
3058  if (TileY(tile) == 0) trackbits &= ~(TRACK_BIT_Y | TRACK_BIT_LEFT | TRACK_BIT_UPPER);
3059  }
3060  break;
3061 
3062  case TRANSPORT_ROAD:
3063  if ((GetRoadTypes(tile) & sub_mode) != 0 && IsRoadStop(tile)) {
3064  DiagDirection dir = GetRoadStopDir(tile);
3065  Axis axis = DiagDirToAxis(dir);
3066 
3067  if (side != INVALID_DIAGDIR) {
3068  if (axis != DiagDirToAxis(side) || (IsStandardRoadStopTile(tile) && dir != side)) break;
3069  }
3070 
3071  trackbits = AxisToTrackBits(axis);
3072  }
3073  break;
3074 
3075  default:
3076  break;
3077  }
3078 
3080 }
3081 
3082 
3083 static void TileLoop_Station(TileIndex tile)
3084 {
3085  /* FIXME -- GetTileTrackStatus_Station -> animated stationtiles
3086  * hardcoded.....not good */
3087  switch (GetStationType(tile)) {
3088  case STATION_AIRPORT:
3089  AirportTileAnimationTrigger(Station::GetByTile(tile), tile, AAT_TILELOOP);
3090  break;
3091 
3092  case STATION_DOCK:
3093  if (!IsTileFlat(tile)) break; // only handle water part
3094  FALLTHROUGH;
3095 
3096  case STATION_OILRIG: //(station part)
3097  case STATION_BUOY:
3098  TileLoop_Water(tile);
3099  break;
3100 
3101  default: break;
3102  }
3103 }
3104 
3105 
3106 static void AnimateTile_Station(TileIndex tile)
3107 {
3108  if (HasStationRail(tile)) {
3109  AnimateStationTile(tile);
3110  return;
3111  }
3112 
3113  if (IsAirport(tile)) {
3114  AnimateAirportTile(tile);
3115  }
3116 }
3117 
3118 
3119 static bool ClickTile_Station(TileIndex tile)
3120 {
3121  const BaseStation *bst = BaseStation::GetByTile(tile);
3122 
3123  if (bst->facilities & FACIL_WAYPOINT) {
3125  } else if (IsHangar(tile)) {
3126  const Station *st = Station::From(bst);
3128  } else {
3130  }
3131  return true;
3132 }
3133 
3134 static VehicleEnterTileStatus VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
3135 {
3136  if (v->type == VEH_TRAIN) {
3137  StationID station_id = GetStationIndex(tile);
3138  if (!v->current_order.ShouldStopAtStation(v, station_id)) return VETSB_CONTINUE;
3139  if (!IsRailStation(tile) || !v->IsFrontEngine()) return VETSB_CONTINUE;
3140 
3141  int station_ahead;
3142  int station_length;
3143  int stop = GetTrainStopLocation(station_id, tile, Train::From(v), &station_ahead, &station_length);
3144 
3145  /* Stop whenever that amount of station ahead + the distance from the
3146  * begin of the platform to the stop location is longer than the length
3147  * of the platform. Station ahead 'includes' the current tile where the
3148  * vehicle is on, so we need to subtract that. */
3149  if (stop + station_ahead - (int)TILE_SIZE >= station_length) return VETSB_CONTINUE;
3150 
3152 
3153  x &= 0xF;
3154  y &= 0xF;
3155 
3156  if (DiagDirToAxis(dir) != AXIS_X) Swap(x, y);
3157  if (y == TILE_SIZE / 2) {
3158  if (dir != DIAGDIR_SE && dir != DIAGDIR_SW) x = TILE_SIZE - 1 - x;
3159  stop &= TILE_SIZE - 1;
3160 
3161  if (x == stop) {
3162  return VETSB_ENTERED_STATION | (VehicleEnterTileStatus)(station_id << VETS_STATION_ID_OFFSET); // enter station
3163  } else if (x < stop) {
3165  uint16 spd = max(0, (stop - x) * 20 - 15);
3166  if (spd < v->cur_speed) v->cur_speed = spd;
3167  }
3168  }
3169  } else if (v->type == VEH_ROAD) {
3170  RoadVehicle *rv = RoadVehicle::From(v);
3171  if (rv->state < RVSB_IN_ROAD_STOP && !IsReversingRoadTrackdir((Trackdir)rv->state) && rv->frame == 0) {
3172  if (IsRoadStop(tile) && rv->IsFrontEngine()) {
3173  /* Attempt to allocate a parking bay in a road stop */
3175  }
3176  }
3177  }
3178 
3179  return VETSB_CONTINUE;
3180 }
3181 
3187 {
3188  /* Collect cargoes accepted since the last big tick. */
3189  uint cargoes = 0;
3190  for (CargoID cid = 0; cid < NUM_CARGO; cid++) {
3191  if (HasBit(st->goods[cid].status, GoodsEntry::GES_ACCEPTED_BIGTICK)) SetBit(cargoes, cid);
3192  }
3193 
3194  /* Anything to do? */
3195  if (cargoes == 0) return;
3196 
3197  /* Loop over all houses in the catchment. */
3198  Rect r = st->GetCatchmentRect();
3199  TileArea ta(TileXY(r.left, r.top), TileXY(r.right, r.bottom));
3200  TILE_AREA_LOOP(tile, ta) {
3201  if (IsTileType(tile, MP_HOUSE)) {
3202  WatchedCargoCallback(tile, cargoes);
3203  }
3204  }
3205 }
3206 
3214 {
3215  if (!st->IsInUse()) {
3216  if (++st->delete_ctr >= 8) delete st;
3217  return false;
3218  }
3219 
3220  if (Station::IsExpected(st)) {
3222 
3223  for (CargoID i = 0; i < NUM_CARGO; i++) {
3224  ClrBit(Station::From(st)->goods[i].status, GoodsEntry::GES_ACCEPTED_BIGTICK);
3225  }
3226  }
3227 
3228 
3229  if ((st->facilities & FACIL_WAYPOINT) == 0) UpdateStationAcceptance(Station::From(st), true);
3230 
3231  return true;
3232 }
3233 
3234 static inline void byte_inc_sat(byte *p)
3235 {
3236  byte b = *p + 1;
3237  if (b != 0) *p = b;
3238 }
3239 
3246 static void TruncateCargo(const CargoSpec *cs, GoodsEntry *ge, uint amount = UINT_MAX)
3247 {
3248  /* If truncating also punish the source stations' ratings to
3249  * decrease the flow of incoming cargo. */
3250 
3251  StationCargoAmountMap waiting_per_source;
3252  ge->cargo.Truncate(amount, &waiting_per_source);
3253  for (StationCargoAmountMap::iterator i(waiting_per_source.begin()); i != waiting_per_source.end(); ++i) {
3254  Station *source_station = Station::GetIfValid(i->first);
3255  if (source_station == NULL) continue;
3256 
3257  GoodsEntry &source_ge = source_station->goods[cs->Index()];
3258  source_ge.max_waiting_cargo = max(source_ge.max_waiting_cargo, i->second);
3259  }
3260 }
3261 
3262 static void UpdateStationRating(Station *st)
3263 {
3264  bool waiting_changed = false;
3265 
3266  byte_inc_sat(&st->time_since_load);
3267  byte_inc_sat(&st->time_since_unload);
3268 
3269  const CargoSpec *cs;
3270  FOR_ALL_CARGOSPECS(cs) {
3271  GoodsEntry *ge = &st->goods[cs->Index()];
3272  /* Slowly increase the rating back to his original level in the case we
3273  * didn't deliver cargo yet to this station. This happens when a bribe
3274  * failed while you didn't moved that cargo yet to a station. */
3275  if (!ge->HasRating() && ge->rating < INITIAL_STATION_RATING) {
3276  ge->rating++;
3277  }
3278 
3279  /* Only change the rating if we are moving this cargo */
3280  if (ge->HasRating()) {
3281  byte_inc_sat(&ge->time_since_pickup);
3282  if (ge->time_since_pickup == 255 && _settings_game.order.selectgoods) {
3284  ge->last_speed = 0;
3285  TruncateCargo(cs, ge);
3286  waiting_changed = true;
3287  continue;
3288  }
3289 
3290  bool skip = false;
3291  int rating = 0;
3292  uint waiting = ge->cargo.AvailableCount();
3293 
3294  /* num_dests is at least 1 if there is any cargo as
3295  * INVALID_STATION is also a destination.
3296  */
3297  uint num_dests = (uint)ge->cargo.Packets()->MapSize();
3298 
3299  /* Average amount of cargo per next hop, but prefer solitary stations
3300  * with only one or two next hops. They are allowed to have more
3301  * cargo waiting per next hop.
3302  * With manual cargo distribution waiting_avg = waiting / 2 as then
3303  * INVALID_STATION is the only destination.
3304  */
3305  uint waiting_avg = waiting / (num_dests + 1);
3306 
3308  /* Perform custom station rating. If it succeeds the speed, days in transit and
3309  * waiting cargo ratings must not be executed. */
3310 
3311  /* NewGRFs expect last speed to be 0xFF when no vehicle has arrived yet. */
3312  uint last_speed = ge->HasVehicleEverTriedLoading() ? ge->last_speed : 0xFF;
3313 
3314  uint32 var18 = min(ge->time_since_pickup, 0xFF) | (min(ge->max_waiting_cargo, 0xFFFF) << 8) | (min(last_speed, 0xFF) << 24);
3315  /* Convert to the 'old' vehicle types */
3316  uint32 var10 = (st->last_vehicle_type == VEH_INVALID) ? 0x0 : (st->last_vehicle_type + 0x10);
3317  uint16 callback = GetCargoCallback(CBID_CARGO_STATION_RATING_CALC, var10, var18, cs);
3318  if (callback != CALLBACK_FAILED) {
3319  skip = true;
3320  rating = GB(callback, 0, 14);
3321 
3322  /* Simulate a 15 bit signed value */
3323  if (HasBit(callback, 14)) rating -= 0x4000;
3324  }
3325  }
3326 
3327  if (!skip) {
3328  int b = ge->last_speed - 85;
3329  if (b >= 0) rating += b >> 2;
3330 
3331  byte waittime = ge->time_since_pickup;
3332  if (st->last_vehicle_type == VEH_SHIP) waittime >>= 2;
3333  (waittime > 21) ||
3334  (rating += 25, waittime > 12) ||
3335  (rating += 25, waittime > 6) ||
3336  (rating += 45, waittime > 3) ||
3337  (rating += 35, true);
3338 
3339  (rating -= 90, ge->max_waiting_cargo > 1500) ||
3340  (rating += 55, ge->max_waiting_cargo > 1000) ||
3341  (rating += 35, ge->max_waiting_cargo > 600) ||
3342  (rating += 10, ge->max_waiting_cargo > 300) ||
3343  (rating += 20, ge->max_waiting_cargo > 100) ||
3344  (rating += 10, true);
3345  }
3346 
3347  if (Company::IsValidID(st->owner) && HasBit(st->town->statues, st->owner)) rating += 26;
3348 
3349  byte age = ge->last_age;
3350  (age >= 3) ||
3351  (rating += 10, age >= 2) ||
3352  (rating += 10, age >= 1) ||
3353  (rating += 13, true);
3354 
3355  {
3356  int or_ = ge->rating; // old rating
3357 
3358  /* only modify rating in steps of -2, -1, 0, 1 or 2 */
3359  ge->rating = rating = or_ + Clamp(Clamp(rating, 0, 255) - or_, -2, 2);
3360 
3361  /* if rating is <= 64 and more than 100 items waiting on average per destination,
3362  * remove some random amount of goods from the station */
3363  if (rating <= 64 && waiting_avg >= 100) {
3364  int dec = Random() & 0x1F;
3365  if (waiting_avg < 200) dec &= 7;
3366  waiting -= (dec + 1) * num_dests;
3367  waiting_changed = true;
3368  }
3369 
3370  /* if rating is <= 127 and there are any items waiting, maybe remove some goods. */
3371  if (rating <= 127 && waiting != 0) {
3372  uint32 r = Random();
3373  if (rating <= (int)GB(r, 0, 7)) {
3374  /* Need to have int, otherwise it will just overflow etc. */
3375  waiting = max((int)waiting - (int)((GB(r, 8, 2) - 1) * num_dests), 0);
3376  waiting_changed = true;
3377  }
3378  }
3379 
3380  /* At some point we really must cap the cargo. Previously this
3381  * was a strict 4095, but now we'll have a less strict, but
3382  * increasingly aggressive truncation of the amount of cargo. */
3383  static const uint WAITING_CARGO_THRESHOLD = 1 << 12;
3384  static const uint WAITING_CARGO_CUT_FACTOR = 1 << 6;
3385  static const uint MAX_WAITING_CARGO = 1 << 15;
3386 
3387  if (waiting > WAITING_CARGO_THRESHOLD) {
3388  uint difference = waiting - WAITING_CARGO_THRESHOLD;
3389  waiting -= (difference / WAITING_CARGO_CUT_FACTOR);
3390 
3391  waiting = min(waiting, MAX_WAITING_CARGO);
3392  waiting_changed = true;
3393  }
3394 
3395  /* We can't truncate cargo that's already reserved for loading.
3396  * Thus StoredCount() here. */
3397  if (waiting_changed && waiting < ge->cargo.AvailableCount()) {
3398  /* Feed back the exact own waiting cargo at this station for the
3399  * next rating calculation. */
3400  ge->max_waiting_cargo = 0;
3401 
3402  TruncateCargo(cs, ge, ge->cargo.AvailableCount() - waiting);
3403  } else {
3404  /* If the average number per next hop is low, be more forgiving. */
3405  ge->max_waiting_cargo = waiting_avg;
3406  }
3407  }
3408  }
3409  }
3410 
3411  StationID index = st->index;
3412  if (waiting_changed) {
3413  SetWindowDirty(WC_STATION_VIEW, index); // update whole window
3414  } else {
3415  SetWindowWidgetDirty(WC_STATION_VIEW, index, WID_SV_ACCEPT_RATING_LIST); // update only ratings list
3416  }
3417 }
3418 
3427 void RerouteCargo(Station *st, CargoID c, StationID avoid, StationID avoid2)
3428 {
3429  GoodsEntry &ge = st->goods[c];
3430 
3431  /* Reroute cargo in station. */
3432  ge.cargo.Reroute(UINT_MAX, &ge.cargo, avoid, avoid2, &ge);
3433 
3434  /* Reroute cargo staged to be transfered. */
3435  for (std::list<Vehicle *>::iterator it(st->loading_vehicles.begin()); it != st->loading_vehicles.end(); ++it) {
3436  for (Vehicle *v = *it; v != NULL; v = v->Next()) {
3437  if (v->cargo_type != c) continue;
3438  v->cargo.Reroute(UINT_MAX, &v->cargo, avoid, avoid2, &ge);
3439  }
3440  }
3441 }
3442 
3452 {
3453  for (CargoID c = 0; c < NUM_CARGO; ++c) {
3454  const bool auto_distributed = (_settings_game.linkgraph.GetDistributionType(c) != DT_MANUAL);
3455  GoodsEntry &ge = from->goods[c];
3457  if (lg == NULL) continue;
3458  Node node = (*lg)[ge.node];
3459  for (EdgeIterator it(node.Begin()); it != node.End();) {
3460  Edge edge = it->second;
3461  Station *to = Station::Get((*lg)[it->first].Station());
3462  assert(to->goods[c].node == it->first);
3463  ++it; // Do that before removing the edge. Anything else may crash.
3464  assert(_date >= edge.LastUpdate());
3465  uint timeout = LinkGraph::MIN_TIMEOUT_DISTANCE + (DistanceManhattan(from->xy, to->xy) >> 3);
3466  if ((uint)(_date - edge.LastUpdate()) > timeout) {
3467  bool updated = false;
3468 
3469  if (auto_distributed) {
3470  /* Have all vehicles refresh their next hops before deciding to
3471  * remove the node. */
3472  OrderList *l;
3473  SmallVector<Vehicle *, 32> vehicles;
3474  FOR_ALL_ORDER_LISTS(l) {
3475  bool found_from = false;
3476  bool found_to = false;
3477  for (Order *order = l->GetFirstOrder(); order != NULL; order = order->next) {
3478  if (!order->IsType(OT_GOTO_STATION) && !order->IsType(OT_IMPLICIT)) continue;
3479  if (order->GetDestination() == from->index) {
3480  found_from = true;
3481  if (found_to) break;
3482  } else if (order->GetDestination() == to->index) {
3483  found_to = true;
3484  if (found_from) break;
3485  }
3486  }
3487  if (!found_to || !found_from) continue;
3488  *(vehicles.Append()) = l->GetFirstSharedVehicle();
3489  }
3490 
3491  Vehicle **iter = vehicles.Begin();
3492  while (iter != vehicles.End()) {
3493  Vehicle *v = *iter;
3494 
3495  LinkRefresher::Run(v, false); // Don't allow merging. Otherwise lg might get deleted.
3496  if (edge.LastUpdate() == _date) {
3497  updated = true;
3498  break;
3499  }
3500 
3501  Vehicle *next_shared = v->NextShared();
3502  if (next_shared) {
3503  *iter = next_shared;
3504  ++iter;
3505  } else {
3506  vehicles.Erase(iter);
3507  }
3508 
3509  if (iter == vehicles.End()) iter = vehicles.Begin();
3510  }
3511  }
3512 
3513  if (!updated) {
3514  /* If it's still considered dead remove it. */
3515  node.RemoveEdge(to->goods[c].node);
3516  ge.flows.DeleteFlows(to->index);
3517  RerouteCargo(from, c, to->index, from->index);
3518  }
3519  } else if (edge.LastUnrestrictedUpdate() != INVALID_DATE && (uint)(_date - edge.LastUnrestrictedUpdate()) > timeout) {
3520  edge.Restrict();
3521  ge.flows.RestrictFlows(to->index);
3522  RerouteCargo(from, c, to->index, from->index);
3523  } else if (edge.LastRestrictedUpdate() != INVALID_DATE && (uint)(_date - edge.LastRestrictedUpdate()) > timeout) {
3524  edge.Release();
3525  }
3526  }
3527  assert(_date >= lg->LastCompression());
3528  if ((uint)(_date - lg->LastCompression()) > LinkGraph::COMPRESSION_INTERVAL) {
3529  lg->Compress();
3530  }
3531  }
3532 }
3533 
3543 void IncreaseStats(Station *st, CargoID cargo, StationID next_station_id, uint capacity, uint usage, EdgeUpdateMode mode)
3544 {
3545  GoodsEntry &ge1 = st->goods[cargo];
3546  Station *st2 = Station::Get(next_station_id);
3547  GoodsEntry &ge2 = st2->goods[cargo];
3548  LinkGraph *lg = NULL;
3549  if (ge1.link_graph == INVALID_LINK_GRAPH) {
3550  if (ge2.link_graph == INVALID_LINK_GRAPH) {
3552  lg = new LinkGraph(cargo);
3554  ge2.link_graph = lg->index;
3555  ge2.node = lg->AddNode(st2);
3556  } else {
3557  DEBUG(misc, 0, "Can't allocate link graph");
3558  }
3559  } else {
3560  lg = LinkGraph::Get(ge2.link_graph);
3561  }
3562  if (lg) {
3563  ge1.link_graph = lg->index;
3564  ge1.node = lg->AddNode(st);
3565  }
3566  } else if (ge2.link_graph == INVALID_LINK_GRAPH) {
3567  lg = LinkGraph::Get(ge1.link_graph);
3568  ge2.link_graph = lg->index;
3569  ge2.node = lg->AddNode(st2);
3570  } else {
3571  lg = LinkGraph::Get(ge1.link_graph);
3572  if (ge1.link_graph != ge2.link_graph) {
3573  LinkGraph *lg2 = LinkGraph::Get(ge2.link_graph);
3574  if (lg->Size() < lg2->Size()) {
3576  lg2->Merge(lg); // Updates GoodsEntries of lg
3577  lg = lg2;
3578  } else {
3580  lg->Merge(lg2); // Updates GoodsEntries of lg2
3581  }
3582  }
3583  }
3584  if (lg != NULL) {
3585  (*lg)[ge1.node].UpdateEdge(ge2.node, capacity, usage, mode);
3586  }
3587 }
3588 
3595 void IncreaseStats(Station *st, const Vehicle *front, StationID next_station_id)
3596 {
3597  for (const Vehicle *v = front; v != NULL; v = v->Next()) {
3598  if (v->refit_cap > 0) {
3599  /* The cargo count can indeed be higher than the refit_cap if
3600  * wagons have been auto-replaced and subsequently auto-
3601  * refitted to a higher capacity. The cargo gets redistributed
3602  * among the wagons in that case.
3603  * As usage is not such an important figure anyway we just
3604  * ignore the additional cargo then.*/
3605  IncreaseStats(st, v->cargo_type, next_station_id, v->refit_cap,
3607  }
3608  }
3609 }
3610 
3611 /* called for every station each tick */
3612 static void StationHandleSmallTick(BaseStation *st)
3613 {
3614  if ((st->facilities & FACIL_WAYPOINT) != 0 || !st->IsInUse()) return;
3615 
3616  byte b = st->delete_ctr + 1;
3617  if (b >= STATION_RATING_TICKS) b = 0;
3618  st->delete_ctr = b;
3619 
3620  if (b == 0) UpdateStationRating(Station::From(st));
3621 }
3622 
3623 void OnTick_Station()
3624 {
3625  if (_game_mode == GM_EDITOR) return;
3626 
3627  BaseStation *st;
3628  FOR_ALL_BASE_STATIONS(st) {
3629  StationHandleSmallTick(st);
3630 
3631  /* Clean up the link graph about once a week. */
3632  if (Station::IsExpected(st) && (_tick_counter + st->index) % STATION_LINKGRAPH_TICKS == 0) {
3634  };
3635 
3636  /* Run STATION_ACCEPTANCE_TICKS = 250 tick interval trigger for station animation.
3637  * Station index is included so that triggers are not all done
3638  * at the same time. */
3639  if ((_tick_counter + st->index) % STATION_ACCEPTANCE_TICKS == 0) {
3640  /* Stop processing this station if it was deleted */
3641  if (!StationHandleBigTick(st)) continue;
3642  TriggerStationAnimation(st, st->xy, SAT_250_TICKS);
3643  if (Station::IsExpected(st)) AirportAnimationTrigger(Station::From(st), AAT_STATION_250_TICKS);
3644  }
3645  }
3646 }
3647 
3650 {
3651  Station *st;
3652 
3653  FOR_ALL_STATIONS(st) {
3654  for (CargoID i = 0; i < NUM_CARGO; i++) {
3655  GoodsEntry *ge = &st->goods[i];
3658  }
3659  }
3660 }
3661 
3662 
3663 void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint radius)
3664 {
3665  Station *st;
3666 
3667  FOR_ALL_STATIONS(st) {
3668  if (st->owner == owner &&
3669  DistanceManhattan(tile, st->xy) <= radius) {
3670  for (CargoID i = 0; i < NUM_CARGO; i++) {
3671  GoodsEntry *ge = &st->goods[i];
3672 
3673  if (ge->status != 0) {
3674  ge->rating = Clamp(ge->rating + amount, 0, 255);
3675  }
3676  }
3677  }
3678  }
3679 }
3680 
3681 static uint UpdateStationWaiting(Station *st, CargoID type, uint amount, SourceType source_type, SourceID source_id)
3682 {
3683  /* We can't allocate a CargoPacket? Then don't do anything
3684  * at all; i.e. just discard the incoming cargo. */
3685  if (!CargoPacket::CanAllocateItem()) return 0;
3686 
3687  GoodsEntry &ge = st->goods[type];
3688  amount += ge.amount_fract;
3689  ge.amount_fract = GB(amount, 0, 8);
3690 
3691  amount >>= 8;
3692  /* No new "real" cargo item yet. */
3693  if (amount == 0) return 0;
3694 
3695  StationID next = ge.GetVia(st->index);
3696  ge.cargo.Append(new CargoPacket(st->index, st->xy, amount, source_type, source_id), next);
3697  LinkGraph *lg = NULL;
3698  if (ge.link_graph == INVALID_LINK_GRAPH) {
3700  lg = new LinkGraph(type);
3702  ge.link_graph = lg->index;
3703  ge.node = lg->AddNode(st);
3704  } else {
3705  DEBUG(misc, 0, "Can't allocate link graph");
3706  }
3707  } else {
3708  lg = LinkGraph::Get(ge.link_graph);
3709  }
3710  if (lg != NULL) (*lg)[ge.node].UpdateSupply(amount);
3711 
3712  if (!ge.HasRating()) {
3715  }
3716 
3718  TriggerStationAnimation(st, st->xy, SAT_NEW_CARGO, type);
3719  AirportAnimationTrigger(st, AAT_STATION_NEW_CARGO, type);
3720 
3722  st->MarkTilesDirty(true);
3723  return amount;
3724 }
3725 
3726 static bool IsUniqueStationName(const char *name)
3727 {
3728  const Station *st;
3729 
3730  FOR_ALL_STATIONS(st) {
3731  if (st->name != NULL && strcmp(st->name, name) == 0) return false;
3732  }
3733 
3734  return true;
3735 }
3736 
3746 CommandCost CmdRenameStation(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
3747 {
3748  Station *st = Station::GetIfValid(p1);
3749  if (st == NULL) return CMD_ERROR;
3750 
3751  CommandCost ret = CheckOwnership(st->owner);
3752  if (ret.Failed()) return ret;
3753 
3754  bool reset = StrEmpty(text);
3755 
3756  if (!reset) {
3758  if (!IsUniqueStationName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
3759  }
3760 
3761  if (flags & DC_EXEC) {
3762  free(st->name);
3763  st->name = reset ? NULL : stredup(text);
3764 
3765  st->UpdateVirtCoord();
3767  }
3768 
3769  return CommandCost();
3770 }
3771 
3778 void FindStationsAroundTiles(const TileArea &location, StationList *stations)
3779 {
3780  /* area to search = producer plus station catchment radius */
3782 
3783  uint x = TileX(location.tile);
3784  uint y = TileY(location.tile);
3785 
3786  uint min_x = (x > max_rad) ? x - max_rad : 0;
3787  uint max_x = x + location.w + max_rad;
3788  uint min_y = (y > max_rad) ? y - max_rad : 0;
3789  uint max_y = y + location.h + max_rad;
3790 
3791  if (min_x == 0 && _settings_game.construction.freeform_edges) min_x = 1;
3792  if (min_y == 0 && _settings_game.construction.freeform_edges) min_y = 1;
3793  if (max_x >= MapSizeX()) max_x = MapSizeX() - 1;
3794  if (max_y >= MapSizeY()) max_y = MapSizeY() - 1;
3795 
3796  for (uint cy = min_y; cy < max_y; cy++) {
3797  for (uint cx = min_x; cx < max_x; cx++) {
3798  TileIndex cur_tile = TileXY(cx, cy);
3799  if (!IsTileType(cur_tile, MP_STATION)) continue;
3800 
3801  Station *st = Station::GetByTile(cur_tile);
3802  /* st can be NULL in case of waypoints */
3803  if (st == NULL) continue;
3804 
3806  int rad = st->GetCatchmentRadius();
3807  int rad_x = cx - x;
3808  int rad_y = cy - y;
3809 
3810  if (rad_x < -rad || rad_x >= rad + location.w) continue;
3811  if (rad_y < -rad || rad_y >= rad + location.h) continue;
3812  }
3813 
3814  /* Insert the station in the set. This will fail if it has
3815  * already been added.
3816  */
3817  stations->Include(st);
3818  }
3819  }
3820 }
3821 
3827 {
3828  if (this->tile != INVALID_TILE) {
3829  FindStationsAroundTiles(*this, &this->stations);
3830  this->tile = INVALID_TILE;
3831  }
3832  return &this->stations;
3833 }
3834 
3835 uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations)
3836 {
3837  /* Return if nothing to do. Also the rounding below fails for 0. */
3838  if (amount == 0) return 0;
3839 
3840  Station *st1 = NULL; // Station with best rating
3841  Station *st2 = NULL; // Second best station
3842  uint best_rating1 = 0; // rating of st1
3843  uint best_rating2 = 0; // rating of st2
3844 
3845  for (Station * const *st_iter = all_stations->Begin(); st_iter != all_stations->End(); ++st_iter) {
3846  Station *st = *st_iter;
3847 
3848  /* Is the station reserved exclusively for somebody else? */
3849  if (st->town->exclusive_counter > 0 && st->town->exclusivity != st->owner) continue;
3850 
3851  if (st->goods[type].rating == 0) continue; // Lowest possible rating, better not to give cargo anymore
3852 
3853  if (_settings_game.order.selectgoods && !st->goods[type].HasVehicleEverTriedLoading()) continue; // Selectively servicing stations, and not this one
3854 
3855  if (IsCargoInClass(type, CC_PASSENGERS)) {
3856  if (st->facilities == FACIL_TRUCK_STOP) continue; // passengers are never served by just a truck stop
3857  } else {
3858  if (st->facilities == FACIL_BUS_STOP) continue; // non-passengers are never served by just a bus stop
3859  }
3860 
3861  /* This station can be used, add it to st1/st2 */
3862  if (st1 == NULL || st->goods[type].rating >= best_rating1) {
3863  st2 = st1; best_rating2 = best_rating1; st1 = st; best_rating1 = st->goods[type].rating;
3864  } else if (st2 == NULL || st->goods[type].rating >= best_rating2) {
3865  st2 = st; best_rating2 = st->goods[type].rating;
3866  }
3867  }
3868 
3869  /* no stations around at all? */
3870  if (st1 == NULL) return 0;
3871 
3872  /* From now we'll calculate with fractal cargo amounts.
3873  * First determine how much cargo we really have. */
3874  amount *= best_rating1 + 1;
3875 
3876  if (st2 == NULL) {
3877  /* only one station around */
3878  return UpdateStationWaiting(st1, type, amount, source_type, source_id);
3879  }
3880 
3881  /* several stations around, the best two (highest rating) are in st1 and st2 */
3882  assert(st1 != NULL);
3883  assert(st2 != NULL);
3884  assert(best_rating1 != 0 || best_rating2 != 0);
3885 
3886  /* Then determine the amount the worst station gets. We do it this way as the
3887  * best should get a bonus, which in this case is the rounding difference from
3888  * this calculation. In reality that will mean the bonus will be pretty low.
3889  * Nevertheless, the best station should always get the most cargo regardless
3890  * of rounding issues. */
3891  uint worst_cargo = amount * best_rating2 / (best_rating1 + best_rating2);
3892  assert(worst_cargo <= (amount - worst_cargo));
3893 
3894  /* And then send the cargo to the stations! */
3895  uint moved = UpdateStationWaiting(st1, type, amount - worst_cargo, source_type, source_id);
3896  /* These two UpdateStationWaiting's can't be in the statement as then the order
3897  * of execution would be undefined and that could cause desyncs with callbacks. */
3898  return moved + UpdateStationWaiting(st2, type, worst_cargo, source_type, source_id);
3899 }
3900 
3901 void BuildOilRig(TileIndex tile)
3902 {
3903  if (!Station::CanAllocateItem()) {
3904  DEBUG(misc, 0, "Can't allocate station for oilrig at 0x%X, reverting to oilrig only", tile);
3905  return;
3906  }
3907 
3908  Station *st = new Station(tile);
3909  st->town = ClosestTownFromTile(tile, UINT_MAX);
3910 
3911  st->string_id = GenerateStationName(st, tile, STATIONNAMING_OILRIG);
3912 
3913  assert(IsTileType(tile, MP_INDUSTRY));
3914  DeleteAnimatedTile(tile);
3915  MakeOilrig(tile, st->index, GetWaterClass(tile));
3916 
3917  st->owner = OWNER_NONE;
3918  st->airport.type = AT_OILRIG;
3919  st->airport.Add(tile);
3920  st->dock_tile = tile;
3922  st->build_date = _date;
3923 
3924  st->rect.BeforeAddTile(tile, StationRect::ADD_FORCE);
3925 
3926  st->UpdateVirtCoord();
3927  UpdateStationAcceptance(st, false);
3929 }
3930 
3931 void DeleteOilRig(TileIndex tile)
3932 {
3933  Station *st = Station::GetByTile(tile);
3934 
3935  MakeWaterKeepingClass(tile, OWNER_NONE);
3936 
3937  st->dock_tile = INVALID_TILE;
3938  st->airport.Clear();
3939  st->facilities &= ~(FACIL_AIRPORT | FACIL_DOCK);
3940  st->airport.flags = 0;
3941 
3942  st->rect.AfterRemoveTile(st, tile);
3943 
3944  st->UpdateVirtCoord();
3946  if (!st->IsInUse()) delete st;
3947 }
3948 
3949 static void ChangeTileOwner_Station(TileIndex tile, Owner old_owner, Owner new_owner)
3950 {
3951  if (IsRoadStopTile(tile)) {
3952  for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
3953  /* Update all roadtypes, no matter if they are present */
3954  if (GetRoadOwner(tile, rt) == old_owner) {
3955  if (HasTileRoadType(tile, rt)) {
3956  /* A drive-through road-stop has always two road bits. No need to dirty windows here, we'll redraw the whole screen anyway. */
3957  Company::Get(old_owner)->infrastructure.road[rt] -= 2;
3958  if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.road[rt] += 2;
3959  }
3960  SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
3961  }
3962  }
3963  }
3964 
3965  if (!IsTileOwner(tile, old_owner)) return;
3966 
3967  if (new_owner != INVALID_OWNER) {
3968  /* Update company infrastructure counts. Only do it here
3969  * if the new owner is valid as otherwise the clear
3970  * command will do it for us. No need to dirty windows
3971  * here, we'll redraw the whole screen anyway.*/
3972  Company *old_company = Company::Get(old_owner);
3973  Company *new_company = Company::Get(new_owner);
3974 
3975  /* Update counts for underlying infrastructure. */
3976  switch (GetStationType(tile)) {
3977  case STATION_RAIL:
3978  case STATION_WAYPOINT:
3979  if (!IsStationTileBlocked(tile)) {
3980  old_company->infrastructure.rail[GetRailType(tile)]--;
3981  new_company->infrastructure.rail[GetRailType(tile)]++;
3982  }
3983  break;
3984 
3985  case STATION_BUS:
3986  case STATION_TRUCK:
3987  /* Road stops were already handled above. */
3988  break;
3989 
3990  case STATION_BUOY:
3991  case STATION_DOCK:
3992  if (GetWaterClass(tile) == WATER_CLASS_CANAL) {
3993  old_company->infrastructure.water--;
3994  new_company->infrastructure.water++;
3995  }
3996  break;
3997 
3998  default:
3999  break;
4000  }
4001 
4002  /* Update station tile count. */
4003  if (!IsBuoy(tile) && !IsAirport(tile)) {
4004  old_company->infrastructure.station--;
4005  new_company->infrastructure.station++;
4006  }
4007 
4008  /* for buoys, owner of tile is owner of water, st->owner == OWNER_NONE */
4009  SetTileOwner(tile, new_owner);
4011  } else {
4012  if (IsDriveThroughStopTile(tile)) {
4013  /* Remove the drive-through road stop */
4014  DoCommand(tile, 1 | 1 << 8, (GetStationType(tile) == STATION_TRUCK) ? ROADSTOP_TRUCK : ROADSTOP_BUS, DC_EXEC | DC_BANKRUPT, CMD_REMOVE_ROAD_STOP);
4015  assert(IsTileType(tile, MP_ROAD));
4016  /* Change owner of tile and all roadtypes */
4017  ChangeTileOwner(tile, old_owner, new_owner);
4018  } else {
4020  /* Set tile owner of water under (now removed) buoy and dock to OWNER_NONE.
4021  * Update owner of buoy if it was not removed (was in orders).
4022  * Do not update when owned by OWNER_WATER (sea and rivers). */
4023  if ((IsTileType(tile, MP_WATER) || IsBuoyTile(tile)) && IsTileOwner(tile, old_owner)) SetTileOwner(tile, OWNER_NONE);
4024  }
4025  }
4026 }
4027 
4037 {
4038  /* Yeah... water can always remove stops, right? */
4039  if (_current_company == OWNER_WATER) return true;
4040 
4041  RoadTypes rts = GetRoadTypes(tile);
4042  if (HasBit(rts, ROADTYPE_TRAM)) {
4043  Owner tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
4044  if (tram_owner != OWNER_NONE && CheckOwnership(tram_owner).Failed()) return false;
4045  }
4046  if (HasBit(rts, ROADTYPE_ROAD)) {
4047  Owner road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
4048  if (road_owner != OWNER_TOWN) {
4049  if (road_owner != OWNER_NONE && CheckOwnership(road_owner).Failed()) return false;
4050  } else {
4051  if (CheckAllowRemoveRoad(tile, GetAnyRoadBits(tile, ROADTYPE_ROAD), OWNER_TOWN, ROADTYPE_ROAD, flags).Failed()) return false;
4052  }
4053  }
4054 
4055  return true;
4056 }
4057 
4065 {
4066  if (flags & DC_AUTO) {
4067  switch (GetStationType(tile)) {
4068  default: break;
4069  case STATION_RAIL: return_cmd_error(STR_ERROR_MUST_DEMOLISH_RAILROAD);
4070  case STATION_WAYPOINT: return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
4071  case STATION_AIRPORT: return_cmd_error(STR_ERROR_MUST_DEMOLISH_AIRPORT_FIRST);
4072  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);
4073  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);
4074  case STATION_BUOY: return_cmd_error(STR_ERROR_BUOY_IN_THE_WAY);
4075  case STATION_DOCK: return_cmd_error(STR_ERROR_MUST_DEMOLISH_DOCK_FIRST);
4076  case STATION_OILRIG:
4077  SetDParam(1, STR_INDUSTRY_NAME_OIL_RIG);
4078  return_cmd_error(STR_ERROR_GENERIC_OBJECT_IN_THE_WAY);
4079  }
4080  }
4081 
4082  switch (GetStationType(tile)) {
4083  case STATION_RAIL: return RemoveRailStation(tile, flags);
4084  case STATION_WAYPOINT: return RemoveRailWaypoint(tile, flags);
4085  case STATION_AIRPORT: return RemoveAirport(tile, flags);
4086  case STATION_TRUCK:
4087  if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
4088  return_cmd_error(STR_ERROR_MUST_DEMOLISH_TRUCK_STATION_FIRST);
4089  }
4090  return RemoveRoadStop(tile, flags);
4091  case STATION_BUS:
4092  if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
4093  return_cmd_error(STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST);
4094  }
4095  return RemoveRoadStop(tile, flags);
4096  case STATION_BUOY: return RemoveBuoy(tile, flags);
4097  case STATION_DOCK: return RemoveDock(tile, flags);
4098  default: break;
4099  }
4100 
4101  return CMD_ERROR;
4102 }
4103 
4104 static CommandCost TerraformTile_Station(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
4105 {
4107  /* TODO: If you implement newgrf callback 149 'land slope check', you have to decide what to do with it here.
4108  * TTDP does not call it.
4109  */
4110  if (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new)) {
4111  switch (GetStationType(tile)) {
4112  case STATION_WAYPOINT:
4113  case STATION_RAIL: {
4114  DiagDirection direction = AxisToDiagDir(GetRailStationAxis(tile));
4115  if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
4116  if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
4117  return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
4118  }
4119 
4120  case STATION_AIRPORT:
4121  return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
4122 
4123  case STATION_TRUCK:
4124  case STATION_BUS: {
4125  DiagDirection direction = GetRoadStopDir(tile);
4126  if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
4127  if (IsDriveThroughStopTile(tile)) {
4128  if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
4129  }
4130  return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
4131  }
4132 
4133  default: break;
4134  }
4135  }
4136  }
4137  return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
4138 }
4139 
4145 uint FlowStat::GetShare(StationID st) const
4146 {
4147  uint32 prev = 0;
4148  for (SharesMap::const_iterator it = this->shares.begin(); it != this->shares.end(); ++it) {
4149  if (it->second == st) {
4150  return it->first - prev;
4151  } else {
4152  prev = it->first;
4153  }
4154  }
4155  return 0;
4156 }
4157 
4164 StationID FlowStat::GetVia(StationID excluded, StationID excluded2) const
4165 {
4166  if (this->unrestricted == 0) return INVALID_STATION;
4167  assert(!this->shares.empty());
4168  SharesMap::const_iterator it = this->shares.upper_bound(RandomRange(this->unrestricted));
4169  assert(it != this->shares.end() && it->first <= this->unrestricted);
4170  if (it->second != excluded && it->second != excluded2) return it->second;
4171 
4172  /* We've hit one of the excluded stations.
4173  * Draw another share, from outside its range. */
4174 
4175  uint end = it->first;
4176  uint begin = (it == this->shares.begin() ? 0 : (--it)->first);
4177  uint interval = end - begin;
4178  if (interval >= this->unrestricted) return INVALID_STATION; // Only one station in the map.
4179  uint new_max = this->unrestricted - interval;
4180  uint rand = RandomRange(new_max);
4181  SharesMap::const_iterator it2 = (rand < begin) ? this->shares.upper_bound(rand) :
4182  this->shares.upper_bound(rand + interval);
4183  assert(it2 != this->shares.end() && it2->first <= this->unrestricted);
4184  if (it2->second != excluded && it2->second != excluded2) return it2->second;
4185 
4186  /* We've hit the second excluded station.
4187  * Same as before, only a bit more complicated. */
4188 
4189  uint end2 = it2->first;
4190  uint begin2 = (it2 == this->shares.begin() ? 0 : (--it2)->first);
4191  uint interval2 = end2 - begin2;
4192  if (interval2 >= new_max) return INVALID_STATION; // Only the two excluded stations in the map.
4193  new_max -= interval2;
4194  if (begin > begin2) {
4195  Swap(begin, begin2);
4196  Swap(end, end2);
4197  Swap(interval, interval2);
4198  }
4199  rand = RandomRange(new_max);
4200  SharesMap::const_iterator it3 = this->shares.upper_bound(this->unrestricted);
4201  if (rand < begin) {
4202  it3 = this->shares.upper_bound(rand);
4203  } else if (rand < begin2 - interval) {
4204  it3 = this->shares.upper_bound(rand + interval);
4205  } else {
4206  it3 = this->shares.upper_bound(rand + interval + interval2);
4207  }
4208  assert(it3 != this->shares.end() && it3->first <= this->unrestricted);
4209  return it3->second;
4210 }
4211 
4218 {
4219  assert(!this->shares.empty());
4220  SharesMap new_shares;
4221  uint i = 0;
4222  for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4223  new_shares[++i] = it->second;
4224  if (it->first == this->unrestricted) this->unrestricted = i;
4225  }
4226  this->shares.swap(new_shares);
4227  assert(!this->shares.empty() && this->unrestricted <= (--this->shares.end())->first);
4228 }
4229 
4236 void FlowStat::ChangeShare(StationID st, int flow)
4237 {
4238  /* We assert only before changing as afterwards the shares can actually
4239  * be empty. In that case the whole flow stat must be deleted then. */
4240  assert(!this->shares.empty());
4241 
4242  uint removed_shares = 0;
4243  uint added_shares = 0;
4244  uint last_share = 0;
4245  SharesMap new_shares;
4246  for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4247  if (it->second == st) {
4248  if (flow < 0) {
4249  uint share = it->first - last_share;
4250  if (flow == INT_MIN || (uint)(-flow) >= share) {
4251  removed_shares += share;
4252  if (it->first <= this->unrestricted) this->unrestricted -= share;
4253  if (flow != INT_MIN) flow += share;
4254  last_share = it->first;
4255  continue; // remove the whole share
4256  }
4257  removed_shares += (uint)(-flow);
4258  } else {
4259  added_shares += (uint)(flow);
4260  }
4261  if (it->first <= this->unrestricted) this->unrestricted += flow;
4262 
4263  /* If we don't continue above the whole flow has been added or
4264  * removed. */
4265  flow = 0;
4266  }
4267  new_shares[it->first + added_shares - removed_shares] = it->second;
4268  last_share = it->first;
4269  }
4270  if (flow > 0) {
4271  new_shares[last_share + (uint)flow] = st;
4272  if (this->unrestricted < last_share) {
4273  this->ReleaseShare(st);
4274  } else {
4275  this->unrestricted += flow;
4276  }
4277  }
4278  this->shares.swap(new_shares);
4279 }
4280 
4286 void FlowStat::RestrictShare(StationID st)
4287 {
4288  assert(!this->shares.empty());
4289  uint flow = 0;
4290  uint last_share = 0;
4291  SharesMap new_shares;
4292  for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4293  if (flow == 0) {
4294  if (it->first > this->unrestricted) return; // Not present or already restricted.
4295  if (it->second == st) {
4296  flow = it->first - last_share;
4297  this->unrestricted -= flow;
4298  } else {
4299  new_shares[it->first] = it->second;
4300  }
4301  } else {
4302  new_shares[it->first - flow] = it->second;
4303  }
4304  last_share = it->first;
4305  }
4306  if (flow == 0) return;
4307  new_shares[last_share + flow] = st;
4308  this->shares.swap(new_shares);
4309  assert(!this->shares.empty());
4310 }
4311 
4317 void FlowStat::ReleaseShare(StationID st)
4318 {
4319  assert(!this->shares.empty());
4320  uint flow = 0;
4321  uint next_share = 0;
4322  bool found = false;
4323  for (SharesMap::reverse_iterator it(this->shares.rbegin()); it != this->shares.rend(); ++it) {
4324  if (it->first < this->unrestricted) return; // Note: not <= as the share may hit the limit.
4325  if (found) {
4326  flow = next_share - it->first;
4327  this->unrestricted += flow;
4328  break;
4329  } else {
4330  if (it->first == this->unrestricted) return; // !found -> Limit not hit.
4331  if (it->second == st) found = true;
4332  }
4333  next_share = it->first;
4334  }
4335  if (flow == 0) return;
4336  SharesMap new_shares;
4337  new_shares[flow] = st;
4338  for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4339  if (it->second != st) {
4340  new_shares[flow + it->first] = it->second;
4341  } else {
4342  flow = 0;
4343  }
4344  }
4345  this->shares.swap(new_shares);
4346  assert(!this->shares.empty());
4347 }
4348 
4354 void FlowStat::ScaleToMonthly(uint runtime)
4355 {
4356  assert(runtime > 0);
4357  SharesMap new_shares;
4358  uint share = 0;
4359  for (SharesMap::iterator i = this->shares.begin(); i != this->shares.end(); ++i) {
4360  share = max(share + 1, i->first * 30 / runtime);
4361  new_shares[share] = i->second;
4362  if (this->unrestricted == i->first) this->unrestricted = share;
4363  }
4364  this->shares.swap(new_shares);
4365 }
4366 
4373 void FlowStatMap::AddFlow(StationID origin, StationID via, uint flow)
4374 {
4375  FlowStatMap::iterator origin_it = this->find(origin);
4376  if (origin_it == this->end()) {
4377  this->insert(std::make_pair(origin, FlowStat(via, flow)));
4378  } else {
4379  origin_it->second.ChangeShare(via, flow);
4380  assert(!origin_it->second.GetShares()->empty());
4381  }
4382 }
4383 
4392 void FlowStatMap::PassOnFlow(StationID origin, StationID via, uint flow)
4393 {
4394  FlowStatMap::iterator prev_it = this->find(origin);
4395  if (prev_it == this->end()) {
4396  FlowStat fs(via, flow);
4397  fs.AppendShare(INVALID_STATION, flow);
4398  this->insert(std::make_pair(origin, fs));
4399  } else {
4400  prev_it->second.ChangeShare(via, flow);
4401  prev_it->second.ChangeShare(INVALID_STATION, flow);
4402  assert(!prev_it->second.GetShares()->empty());
4403  }
4404 }
4405 
4411 {
4412  for (FlowStatMap::iterator i = this->begin(); i != this->end(); ++i) {
4413  FlowStat &fs = i->second;
4414  uint local = fs.GetShare(INVALID_STATION);
4415  if (local > INT_MAX) { // make sure it fits in an int
4416  fs.ChangeShare(self, -INT_MAX);
4417  fs.ChangeShare(INVALID_STATION, -INT_MAX);
4418  local -= INT_MAX;
4419  }
4420  fs.ChangeShare(self, -(int)local);
4421  fs.ChangeShare(INVALID_STATION, -(int)local);
4422 
4423  /* If the local share is used up there must be a share for some
4424  * remote station. */
4425  assert(!fs.GetShares()->empty());
4426  }
4427 }
4428 
4436 {
4437  StationIDStack ret;
4438  for (FlowStatMap::iterator f_it = this->begin(); f_it != this->end();) {
4439  FlowStat &s_flows = f_it->second;
4440  s_flows.ChangeShare(via, INT_MIN);
4441  if (s_flows.GetShares()->empty()) {
4442  ret.Push(f_it->first);
4443  this->erase(f_it++);
4444  } else {
4445  ++f_it;
4446  }
4447  }
4448  return ret;
4449 }
4450 
4455 void FlowStatMap::RestrictFlows(StationID via)
4456 {
4457  for (FlowStatMap::iterator it = this->begin(); it != this->end(); ++it) {
4458  it->second.RestrictShare(via);
4459  }
4460 }
4461 
4466 void FlowStatMap::ReleaseFlows(StationID via)
4467 {
4468  for (FlowStatMap::iterator it = this->begin(); it != this->end(); ++it) {
4469  it->second.ReleaseShare(via);
4470  }
4471 }
4472 
4478 {
4479  uint ret = 0;
4480  for (FlowStatMap::const_iterator i = this->begin(); i != this->end(); ++i) {
4481  ret += (--(i->second.GetShares()->end()))->first;
4482  }
4483  return ret;
4484 }
4485 
4491 uint FlowStatMap::GetFlowVia(StationID via) const
4492 {
4493  uint ret = 0;
4494  for (FlowStatMap::const_iterator i = this->begin(); i != this->end(); ++i) {
4495  ret += i->second.GetShare(via);
4496  }
4497  return ret;
4498 }
4499 
4505 uint FlowStatMap::GetFlowFrom(StationID from) const
4506 {
4507  FlowStatMap::const_iterator i = this->find(from);
4508  if (i == this->end()) return 0;
4509  return (--(i->second.GetShares()->end()))->first;
4510 }
4511 
4518 uint FlowStatMap::GetFlowFromVia(StationID from, StationID via) const
4519 {
4520  FlowStatMap::const_iterator i = this->find(from);
4521  if (i == this->end()) return 0;
4522  return i->second.GetShare(via);
4523 }
4524 
4525 extern const TileTypeProcs _tile_type_station_procs = {
4526  DrawTile_Station, // draw_tile_proc
4527  GetSlopePixelZ_Station, // get_slope_z_proc
4528  ClearTile_Station, // clear_tile_proc
4529  NULL, // add_accepted_cargo_proc
4530  GetTileDesc_Station, // get_tile_desc_proc
4531  GetTileTrackStatus_Station, // get_tile_track_status_proc
4532  ClickTile_Station, // click_tile_proc
4533  AnimateTile_Station, // animate_tile_proc
4534  TileLoop_Station, // tile_loop_proc
4535  ChangeTileOwner_Station, // change_tile_owner_proc
4536  NULL, // add_produced_cargo_proc
4537  VehicleEnter_Station, // vehicle_enter_tile_proc
4538  GetFoundation_Station, // get_foundation_proc
4539  TerraformTile_Station, // terraform_tile_proc
4540 };