OpenTTD: src/station_cmd.cpp Source File

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station_cmd.cpp
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1 /* $Id: station_cmd.cpp 27256 2015-04-26 11:43:58Z 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 */
28 #include "pathfinder/yapf/yapf_cache.h"
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"
53 #include "linkgraph/linkgraph_base.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
74 bool IsHangar(TileIndex t)
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
135 static int CountMapSquareAround(TileIndex tile, CMSAMatcher cmp)
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 &&
168 (CargoSpec::Get(ind->produced_cargo[i])->classes & (CC_LIQUID | CC_PASSENGERS | CC_MAIL)) == 0) {
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
208 struct StationNameInformation {
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 */
224 StationNameInformation *sni = (StationNameInformation*)user_data;
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;
259 StringID name = GetIndustrySpec(s->indtype)->station_name;
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 ||
323 CountMapSquareAround(tile, IsTileForestIndustry) >= 2)
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
359 static Station *GetClosestDeletedStation(TileIndex tile)
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
380 void Station::GetTileArea(TileArea *ta, StationType type) const
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
414 void Station::UpdateVirtCoord()
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
425 SetWindowDirty(WC_STATION_VIEW, this->index);
426 }
427
429 void UpdateAllStationVirtCoords()
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);
464 AddNewsItem(msg, NT_ACCEPTANCE, NF_INCOLOUR | NF_SMALL, NR_STATION, 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);
592 if (LinkGraph::IsValidID(ge.link_graph)) {
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 */
641 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ACCEPT_RATING_LIST);
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
694 if (Company::IsValidID(_current_company)) {
695 SetBit((*st)->town->have_ratings, _current_company);
696 }
697 }
698 }
699 return CommandCost();
700 }
701
708 static void DeleteStationIfEmpty(BaseStation *st)
709 {
710 if (!st->IsInUse()) {
711 st->delete_ctr = 0;
712 InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
713 }
714 /* station remains but it probably lost some parts - station sign should stay in the station boundaries */
715 UpdateStationSignCoord(st);
716 }
717
718 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags);
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
735 CommandCost ret = EnsureNoVehicleOnGround(tile);
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)) ||
746 ((!_settings_game.construction.build_on_slopes) && tileh != SLOPE_FLAT)) {
747 return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
748 }
749
750 CommandCost cost(EXPENSES_CONSTRUCTION);
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
779 CommandCost CheckFlatLand(TileArea tile_area, DoCommandFlag flags)
780 {
781 CommandCost cost(EXPENSES_CONSTRUCTION);
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 {
813 CommandCost cost(EXPENSES_CONSTRUCTION);
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 {
899 CommandCost cost(EXPENSES_CONSTRUCTION);
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);
956 } else if (!_settings_game.construction.road_stop_on_competitor_road && road_owner != OWNER_NONE) {
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 (!_settings_game.construction.road_stop_on_competitor_road && tram_owner != OWNER_NONE) {
967 CommandCost ret = CheckOwnership(tram_owner);
968 if (ret.Failed()) return ret;
969 }
970 num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_TRAM));
971 }
972
973 /* Take into account existing roadbits. */
974 rts |= cur_rts;
975 } else {
976 ret = DoCommand(cur_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
977 if (ret.Failed()) return ret;
978 cost.AddCost(ret);
979 }
980
981 uint roadbits_to_build = CountBits(rts) * 2 - num_roadbits;
982 cost.AddCost(_price[PR_BUILD_ROAD] * roadbits_to_build);
983 }
984 }
985
986 return cost;
987 }
988
996 CommandCost CanExpandRailStation(const BaseStation *st, TileArea &new_ta, Axis axis)
997 {
998 TileArea cur_ta = st->train_station;
999
1000 /* determine new size of train station region.. */
1001 int x = min(TileX(cur_ta.tile), TileX(new_ta.tile));
1002 int y = min(TileY(cur_ta.tile), TileY(new_ta.tile));
1003 new_ta.w = max(TileX(cur_ta.tile) + cur_ta.w, TileX(new_ta.tile) + new_ta.w) - x;
1004 new_ta.h = max(TileY(cur_ta.tile) + cur_ta.h, TileY(new_ta.tile) + new_ta.h) - y;
1005 new_ta.tile = TileXY(x, y);
1006
1007 /* make sure the final size is not too big. */
1008 if (new_ta.w > _settings_game.station.station_spread || new_ta.h > _settings_game.station.station_spread) {
1009 return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
1010 }
1011
1012 return CommandCost();
1013 }
1014
1015 static inline byte *CreateSingle(byte *layout, int n)
1016 {
1017 int i = n;
1018 do *layout++ = 0; while (--i);
1019 layout[((n - 1) >> 1) - n] = 2;
1020 return layout;
1021 }
1022
1023 static inline byte *CreateMulti(byte *layout, int n, byte b)
1024 {
1025 int i = n;
1026 do *layout++ = b; while (--i);
1027 if (n > 4) {
1028 layout[0 - n] = 0;
1029 layout[n - 1 - n] = 0;
1030 }
1031 return layout;
1032 }
1033
1041 void GetStationLayout(byte *layout, int numtracks, int plat_len, const StationSpec *statspec)
1042 {
1043 if (statspec != NULL && statspec->lengths >= plat_len &&
1044 statspec->platforms[plat_len - 1] >= numtracks &&
1045 statspec->layouts[plat_len - 1][numtracks - 1]) {
1046 /* Custom layout defined, follow it. */
1047 memcpy(layout, statspec->layouts[plat_len - 1][numtracks - 1],
1048 plat_len * numtracks);
1049 return;
1050 }
1051
1052 if (plat_len == 1) {
1053 CreateSingle(layout, numtracks);
1054 } else {
1055 if (numtracks & 1) layout = CreateSingle(layout, plat_len);
1056 numtracks >>= 1;
1057
1058 while (--numtracks >= 0) {
1059 layout = CreateMulti(layout, plat_len, 4);
1060 layout = CreateMulti(layout, plat_len, 6);
1061 }
1062 }
1063 }
1064
1076 template <class T, StringID error_message>
1077 CommandCost FindJoiningBaseStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, T **st)
1078 {
1079 assert(*st == NULL);
1080 bool check_surrounding = true;
1081
1082 if (_settings_game.station.adjacent_stations) {
1083 if (existing_station != INVALID_STATION) {
1084 if (adjacent && existing_station != station_to_join) {
1085 /* You can't build an adjacent station over the top of one that
1086 * already exists. */
1087 return_cmd_error(error_message);
1088 } else {
1089 /* Extend the current station, and don't check whether it will
1090 * be near any other stations. */
1091 *st = T::GetIfValid(existing_station);
1092 check_surrounding = (*st == NULL);
1093 }
1094 } else {
1095 /* There's no station here. Don't check the tiles surrounding this
1096 * one if the company wanted to build an adjacent station. */
1097 if (adjacent) check_surrounding = false;
1098 }
1099 }
1100
1101 if (check_surrounding) {
1102 /* Make sure there are no similar stations around us. */
1103 CommandCost ret = GetStationAround(ta, existing_station, st);
1104 if (ret.Failed()) return ret;
1105 }
1106
1107 /* Distant join */
1108 if (*st == NULL && station_to_join != INVALID_STATION) *st = T::GetIfValid(station_to_join);
1109
1110 return CommandCost();
1111 }
1112
1122 static CommandCost FindJoiningStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
1123 {
1124 return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_RAILWAY_STATION_FIRST>(existing_station, station_to_join, adjacent, ta, st);
1125 }
1126
1136 CommandCost FindJoiningWaypoint(StationID existing_waypoint, StationID waypoint_to_join, bool adjacent, TileArea ta, Waypoint **wp)
1137 {
1138 return FindJoiningBaseStation<Waypoint, STR_ERROR_MUST_REMOVE_RAILWAYPOINT_FIRST>(existing_waypoint, waypoint_to_join, adjacent, ta, wp);
1139 }
1140
1158 CommandCost CmdBuildRailStation(TileIndex tile_org, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1159 {
1160 /* Unpack parameters */
1161 RailType rt = Extract<RailType, 0, 4>(p1);
1162 Axis axis = Extract<Axis, 4, 1>(p1);
1163 byte numtracks = GB(p1, 8, 8);
1164 byte plat_len = GB(p1, 16, 8);
1165 bool adjacent = HasBit(p1, 24);
1166
1167 StationClassID spec_class = Extract<StationClassID, 0, 8>(p2);
1168 byte spec_index = GB(p2, 8, 8);
1169 StationID station_to_join = GB(p2, 16, 16);
1170
1171 /* Does the authority allow this? */
1172 CommandCost ret = CheckIfAuthorityAllowsNewStation(tile_org, flags);
1173 if (ret.Failed()) return ret;
1174
1175 if (!ValParamRailtype(rt)) return CMD_ERROR;
1176
1177 /* Check if the given station class is valid */
1178 if ((uint)spec_class >= StationClass::GetClassCount() || spec_class == STAT_CLASS_WAYP) return CMD_ERROR;
1179 if (spec_index >= StationClass::Get(spec_class)->GetSpecCount()) return CMD_ERROR;
1180 if (plat_len == 0 || numtracks == 0) return CMD_ERROR;
1181
1182 int w_org, h_org;
1183 if (axis == AXIS_X) {
1184 w_org = plat_len;
1185 h_org = numtracks;
1186 } else {
1187 h_org = plat_len;
1188 w_org = numtracks;
1189 }
1190
1191 bool reuse = (station_to_join != NEW_STATION);
1192 if (!reuse) station_to_join = INVALID_STATION;
1193 bool distant_join = (station_to_join != INVALID_STATION);
1194
1195 if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
1196
1197 if (h_org > _settings_game.station.station_spread || w_org > _settings_game.station.station_spread) return CMD_ERROR;
1198
1199 /* these values are those that will be stored in train_tile and station_platforms */
1200 TileArea new_location(tile_org, w_org, h_org);
1201
1202 /* Make sure the area below consists of clear tiles. (OR tiles belonging to a certain rail station) */
1203 StationID est = INVALID_STATION;
1204 SmallVector<Train *, 4> affected_vehicles;
1205 /* Clear the land below the station. */
1206 CommandCost cost = CheckFlatLandRailStation(new_location, flags, axis, &est, rt, affected_vehicles, spec_class, spec_index, plat_len, numtracks);
1207 if (cost.Failed()) return cost;
1208 /* Add construction expenses. */
1209 cost.AddCost((numtracks * _price[PR_BUILD_STATION_RAIL] + _price[PR_BUILD_STATION_RAIL_LENGTH]) * plat_len);
1210 cost.AddCost(numtracks * plat_len * RailBuildCost(rt));
1211
1212 Station *st = NULL;
1213 ret = FindJoiningStation(est, station_to_join, adjacent, new_location, &st);
1214 if (ret.Failed()) return ret;
1215
1216 ret = BuildStationPart(&st, flags, reuse, new_location, STATIONNAMING_RAIL);
1217 if (ret.Failed()) return ret;
1218
1219 if (st != NULL && st->train_station.tile != INVALID_TILE) {
1220 CommandCost ret = CanExpandRailStation(st, new_location, axis);
1221 if (ret.Failed()) return ret;
1222 }
1223
1224 /* Check if we can allocate a custom stationspec to this station */
1225 const StationSpec *statspec = StationClass::Get(spec_class)->GetSpec(spec_index);
1226 int specindex = AllocateSpecToStation(statspec, st, (flags & DC_EXEC) != 0);
1227 if (specindex == -1) return_cmd_error(STR_ERROR_TOO_MANY_STATION_SPECS);
1228
1229 if (statspec != NULL) {
1230 /* Perform NewStation checks */
1231
1232 /* Check if the station size is permitted */
1233 if (HasBit(statspec->disallowed_platforms, min(numtracks - 1, 7)) || HasBit(statspec->disallowed_lengths, min(plat_len - 1, 7))) {
1234 return CMD_ERROR;
1235 }
1236
1237 /* Check if the station is buildable */
1238 if (HasBit(statspec->callback_mask, CBM_STATION_AVAIL)) {
1239 uint16 cb_res = GetStationCallback(CBID_STATION_AVAILABILITY, 0, 0, statspec, NULL, INVALID_TILE);
1240 if (cb_res != CALLBACK_FAILED && !Convert8bitBooleanCallback(statspec->grf_prop.grffile, CBID_STATION_AVAILABILITY, cb_res)) return CMD_ERROR;
1241 }
1242 }
1243
1244 if (flags & DC_EXEC) {
1245 TileIndexDiff tile_delta;
1246 byte *layout_ptr;
1247 byte numtracks_orig;
1248 Track track;
1249
1250 st->train_station = new_location;
1251 st->AddFacility(FACIL_TRAIN, new_location.tile);
1252
1253 st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TRY);
1254
1255 if (statspec != NULL) {
1256 /* Include this station spec's animation trigger bitmask
1257 * in the station's cached copy. */
1258 st->cached_anim_triggers |= statspec->animation.triggers;
1259 }
1260
1261 tile_delta = (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
1262 track = AxisToTrack(axis);
1263
1264 layout_ptr = AllocaM(byte, numtracks * plat_len);
1265 GetStationLayout(layout_ptr, numtracks, plat_len, statspec);
1266
1267 numtracks_orig = numtracks;
1268
1269 Company *c = Company::Get(st->owner);
1270 TileIndex tile_track = tile_org;
1271 do {
1272 TileIndex tile = tile_track;
1273 int w = plat_len;
1274 do {
1275 byte layout = *layout_ptr++;
1276 if (IsRailStationTile(tile) && HasStationReservation(tile)) {
1277 /* Check for trains having a reservation for this tile. */
1278 Train *v = GetTrainForReservation(tile, AxisToTrack(GetRailStationAxis(tile)));
1279 if (v != NULL) {
1280 FreeTrainTrackReservation(v);
1281 *affected_vehicles.Append() = v;
1282 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
1283 for (; v->Next() != NULL; v = v->Next()) { }
1284 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), false);
1285 }
1286 }
1287
1288 /* Railtype can change when overbuilding. */
1289 if (IsRailStationTile(tile)) {
1290 if (!IsStationTileBlocked(tile)) c->infrastructure.rail[GetRailType(tile)]--;
1291 c->infrastructure.station--;
1292 }
1293
1294 /* Remove animation if overbuilding */
1295 DeleteAnimatedTile(tile);
1296 byte old_specindex = HasStationTileRail(tile) ? GetCustomStationSpecIndex(tile) : 0;
1297 MakeRailStation(tile, st->owner, st->index, axis, layout & ~1, rt);
1298 /* Free the spec if we overbuild something */
1299 DeallocateSpecFromStation(st, old_specindex);
1300
1301 SetCustomStationSpecIndex(tile, specindex);
1302 SetStationTileRandomBits(tile, GB(Random(), 0, 4));
1303 SetAnimationFrame(tile, 0);
1304
1305 if (!IsStationTileBlocked(tile)) c->infrastructure.rail[rt]++;
1306 c->infrastructure.station++;
1307
1308 if (statspec != NULL) {
1309 /* Use a fixed axis for GetPlatformInfo as our platforms / numtracks are always the right way around */
1310 uint32 platinfo = GetPlatformInfo(AXIS_X, GetStationGfx(tile), plat_len, numtracks_orig, plat_len - w, numtracks_orig - numtracks, false);
1311
1312 /* As the station is not yet completely finished, the station does not yet exist. */
1313 uint16 callback = GetStationCallback(CBID_STATION_TILE_LAYOUT, platinfo, 0, statspec, NULL, tile);
1314 if (callback != CALLBACK_FAILED) {
1315 if (callback < 8) {
1316 SetStationGfx(tile, (callback & ~1) + axis);
1317 } else {
1318 ErrorUnknownCallbackResult(statspec->grf_prop.grffile->grfid, CBID_STATION_TILE_LAYOUT, callback);
1319 }
1320 }
1321
1322 /* Trigger station animation -- after building? */
1323 TriggerStationAnimation(st, tile, SAT_BUILT);
1324 }
1325
1326 tile += tile_delta;
1327 } while (--w);
1328 AddTrackToSignalBuffer(tile_track, track, _current_company);
1329 YapfNotifyTrackLayoutChange(tile_track, track);
1330 tile_track += tile_delta ^ TileDiffXY(1, 1); // perpendicular to tile_delta
1331 } while (--numtracks);
1332
1333 for (uint i = 0; i < affected_vehicles.Length(); ++i) {
1334 /* Restore reservations of trains. */
1335 Train *v = affected_vehicles[i];
1336 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
1337 TryPathReserve(v, true, true);
1338 for (; v->Next() != NULL; v = v->Next()) { }
1339 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
1340 }
1341
1342 /* Check whether we need to expand the reservation of trains already on the station. */
1343 TileArea update_reservation_area;
1344 if (axis == AXIS_X) {
1345 update_reservation_area = TileArea(tile_org, 1, numtracks_orig);
1346 } else {
1347 update_reservation_area = TileArea(tile_org, numtracks_orig, 1);
1348 }
1349
1350 TILE_AREA_LOOP(tile, update_reservation_area) {
1351 /* Don't even try to make eye candy parts reserved. */
1352 if (IsStationTileBlocked(tile)) continue;
1353
1354 DiagDirection dir = AxisToDiagDir(axis);
1355 TileIndexDiff tile_offset = TileOffsByDiagDir(dir);
1356 TileIndex platform_begin = tile;
1357 TileIndex platform_end = tile;
1358
1359 /* We can only account for tiles that are reachable from this tile, so ignore primarily blocked tiles while finding the platform begin and end. */
1360 for (TileIndex next_tile = platform_begin - tile_offset; IsCompatibleTrainStationTile(next_tile, platform_begin); next_tile -= tile_offset) {
1361 platform_begin = next_tile;
1362 }
1363 for (TileIndex next_tile = platform_end + tile_offset; IsCompatibleTrainStationTile(next_tile, platform_end); next_tile += tile_offset) {
1364 platform_end = next_tile;
1365 }
1366
1367 /* If there is at least on reservation on the platform, we reserve the whole platform. */
1368 bool reservation = false;
1369 for (TileIndex t = platform_begin; !reservation && t <= platform_end; t += tile_offset) {
1370 reservation = HasStationReservation(t);
1371 }
1372
1373 if (reservation) {
1374 SetRailStationPlatformReservation(platform_begin, dir, true);
1375 }
1376 }
1377
1378 st->MarkTilesDirty(false);
1379 st->UpdateVirtCoord();
1380 UpdateStationAcceptance(st, false);
1381 st->RecomputeIndustriesNear();
1382 InvalidateWindowData(WC_SELECT_STATION, 0, 0);
1383 InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
1384 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
1385 DirtyCompanyInfrastructureWindows(st->owner);
1386 }
1387
1388 return cost;
1389 }
1390
1391 static void MakeRailStationAreaSmaller(BaseStation *st)
1392 {
1393 TileArea ta = st->train_station;
1394
1395 restart:
1396
1397 /* too small? */
1398 if (ta.w != 0 && ta.h != 0) {
1399 /* check the left side, x = constant, y changes */
1400 for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(0, i));) {
1401 /* the left side is unused? */
1402 if (++i == ta.h) {
1403 ta.tile += TileDiffXY(1, 0);
1404 ta.w--;
1405 goto restart;
1406 }
1407 }
1408
1409 /* check the right side, x = constant, y changes */
1410 for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(ta.w - 1, i));) {
1411 /* the right side is unused? */
1412 if (++i == ta.h) {
1413 ta.w--;
1414 goto restart;
1415 }
1416 }
1417
1418 /* check the upper side, y = constant, x changes */
1419 for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, 0));) {
1420 /* the left side is unused? */
1421 if (++i == ta.w) {
1422 ta.tile += TileDiffXY(0, 1);
1423 ta.h--;
1424 goto restart;
1425 }
1426 }
1427
1428 /* check the lower side, y = constant, x changes */
1429 for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, ta.h - 1));) {
1430 /* the left side is unused? */
1431 if (++i == ta.w) {
1432 ta.h--;
1433 goto restart;
1434 }
1435 }
1436 } else {
1437 ta.Clear();
1438 }
1439
1440 st->train_station = ta;
1441 }
1442
1453 template <class T>
1454 CommandCost RemoveFromRailBaseStation(TileArea ta, SmallVector<T *, 4> &affected_stations, DoCommandFlag flags, Money removal_cost, bool keep_rail)
1455 {
1456 /* Count of the number of tiles removed */
1457 int quantity = 0;
1458 CommandCost total_cost(EXPENSES_CONSTRUCTION);
1459 /* Accumulator for the errors seen during clearing. If no errors happen,
1460 * and the quantity is 0 there is no station. Otherwise it will be one
1461 * of the other error that got accumulated. */
1462 CommandCost error;
1463
1464 /* Do the action for every tile into the area */
1465 TILE_AREA_LOOP(tile, ta) {
1466 /* Make sure the specified tile is a rail station */
1467 if (!HasStationTileRail(tile)) continue;
1468
1469 /* If there is a vehicle on ground, do not allow to remove (flood) the tile */
1470 CommandCost ret = EnsureNoVehicleOnGround(tile);
1471 error.AddCost(ret);
1472 if (ret.Failed()) continue;
1473
1474 /* Check ownership of station */
1475 T *st = T::GetByTile(tile);
1476 if (st == NULL) continue;
1477
1478 if (_current_company != OWNER_WATER) {
1479 CommandCost ret = CheckOwnership(st->owner);
1480 error.AddCost(ret);
1481 if (ret.Failed()) continue;
1482 }
1483
1484 /* If we reached here, the tile is valid so increase the quantity of tiles we will remove */
1485 quantity++;
1486
1487 if (keep_rail || IsStationTileBlocked(tile)) {
1488 /* Don't refund the 'steel' of the track when we keep the
1489 * rail, or when the tile didn't have any rail at all. */
1490 total_cost.AddCost(-_price[PR_CLEAR_RAIL]);
1491 }
1492
1493 if (flags & DC_EXEC) {
1494 /* read variables before the station tile is removed */
1495 uint specindex = GetCustomStationSpecIndex(tile);
1496 Track track = GetRailStationTrack(tile);
1497 Owner owner = GetTileOwner(tile);
1498 RailType rt = GetRailType(tile);
1499 Train *v = NULL;
1500
1501 if (HasStationReservation(tile)) {
1502 v = GetTrainForReservation(tile, track);
1503 if (v != NULL) {
1504 /* Free train reservation. */
1505 FreeTrainTrackReservation(v);
1506 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
1507 Vehicle *temp = v;
1508 for (; temp->Next() != NULL; temp = temp->Next()) { }
1509 if (IsRailStationTile(temp->tile)) SetRailStationPlatformReservation(temp->tile, TrackdirToExitdir(ReverseTrackdir(temp->GetVehicleTrackdir())), false);
1510 }
1511 }
1512
1513 bool build_rail = keep_rail && !IsStationTileBlocked(tile);
1514 if (!build_rail && !IsStationTileBlocked(tile)) Company::Get(owner)->infrastructure.rail[rt]--;
1515
1516 DoClearSquare(tile);
1517 DeleteNewGRFInspectWindow(GSF_STATIONS, tile);
1518 if (build_rail) MakeRailNormal(tile, owner, TrackToTrackBits(track), rt);
1519 Company::Get(owner)->infrastructure.station--;
1520 DirtyCompanyInfrastructureWindows(owner);
1521
1522 st->rect.AfterRemoveTile(st, tile);
1523 AddTrackToSignalBuffer(tile, track, owner);
1524 YapfNotifyTrackLayoutChange(tile, track);
1525
1526 DeallocateSpecFromStation(st, specindex);
1527
1528 affected_stations.Include(st);
1529
1530 if (v != NULL) {
1531 /* Restore station reservation. */
1532 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
1533 TryPathReserve(v, true, true);
1534 for (; v->Next() != NULL; v = v->Next()) { }
1535 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
1536 }
1537 }
1538 }
1539
1540 if (quantity == 0) return error.Failed() ? error : CommandCost(STR_ERROR_THERE_IS_NO_STATION);
1541
1542 for (T **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
1543 T *st = *stp;
1544
1545 /* now we need to make the "spanned" area of the railway station smaller
1546 * if we deleted something at the edges.
1547 * we also need to adjust train_tile. */
1548 MakeRailStationAreaSmaller(st);
1549 UpdateStationSignCoord(st);
1550
1551 /* if we deleted the whole station, delete the train facility. */
1552 if (st->train_station.tile == INVALID_TILE) {
1553 st->facilities &= ~FACIL_TRAIN;
1554 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
1555 st->UpdateVirtCoord();
1556 DeleteStationIfEmpty(st);
1557 }
1558 }
1559
1560 total_cost.AddCost(quantity * removal_cost);
1561 return total_cost;
1562 }
1563
1575 CommandCost CmdRemoveFromRailStation(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1576 {
1577 TileIndex end = p1 == 0 ? start : p1;
1578 if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
1579
1580 TileArea ta(start, end);
1581 SmallVector<Station *, 4> affected_stations;
1582
1583 CommandCost ret = RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_STATION_RAIL], HasBit(p2, 0));
1584 if (ret.Failed()) return ret;
1585
1586 /* Do all station specific functions here. */
1587 for (Station **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
1588 Station *st = *stp;
1589
1590 if (st->train_station.tile == INVALID_TILE) SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
1591 st->MarkTilesDirty(false);
1592 st->RecomputeIndustriesNear();
1593 }
1594
1595 /* Now apply the rail cost to the number that we deleted */
1596 return ret;
1597 }
1598
1610 CommandCost CmdRemoveFromRailWaypoint(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1611 {
1612 TileIndex end = p1 == 0 ? start : p1;
1613 if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
1614
1615 TileArea ta(start, end);
1616 SmallVector<Waypoint *, 4> affected_stations;
1617
1618 return RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_WAYPOINT_RAIL], HasBit(p2, 0));
1619 }
1620
1621
1630 template <class T>
1631 CommandCost RemoveRailStation(T *st, DoCommandFlag flags, Money removal_cost)
1632 {
1633 /* Current company owns the station? */
1634 if (_current_company != OWNER_WATER) {
1635 CommandCost ret = CheckOwnership(st->owner);
1636 if (ret.Failed()) return ret;
1637 }
1638
1639 /* determine width and height of platforms */
1640 TileArea ta = st->train_station;
1641
1642 assert(ta.w != 0 && ta.h != 0);
1643
1644 CommandCost cost(EXPENSES_CONSTRUCTION);
1645 /* clear all areas of the station */
1646 TILE_AREA_LOOP(tile, ta) {
1647 /* only remove tiles that are actually train station tiles */
1648 if (st->TileBelongsToRailStation(tile)) {
1649 SmallVector<T*, 4> affected_stations; // dummy
1650 CommandCost ret = RemoveFromRailBaseStation(TileArea(tile, 1, 1), affected_stations, flags, removal_cost, false);
1651 if (ret.Failed()) return ret;
1652 cost.AddCost(ret);
1653 }
1654 }
1655
1656 return cost;
1657 }
1658
1665 static CommandCost RemoveRailStation(TileIndex tile, DoCommandFlag flags)
1666 {
1667 /* if there is flooding, remove platforms tile by tile */
1668 if (_current_company == OWNER_WATER) {
1669 return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_STATION);
1670 }
1671
1672 Station *st = Station::GetByTile(tile);
1673 CommandCost cost = RemoveRailStation(st, flags, _price[PR_CLEAR_STATION_RAIL]);
1674
1675 if (flags & DC_EXEC) st->RecomputeIndustriesNear();
1676
1677 return cost;
1678 }
1679
1686 static CommandCost RemoveRailWaypoint(TileIndex tile, DoCommandFlag flags)
1687 {
1688 /* if there is flooding, remove waypoints tile by tile */
1689 if (_current_company == OWNER_WATER) {
1690 return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_WAYPOINT);
1691 }
1692
1693 return RemoveRailStation(Waypoint::GetByTile(tile), flags, _price[PR_CLEAR_WAYPOINT_RAIL]);
1694 }
1695
1696
1702 static RoadStop **FindRoadStopSpot(bool truck_station, Station *st)
1703 {
1704 RoadStop **primary_stop = (truck_station) ? &st->truck_stops : &st->bus_stops;
1705
1706 if (*primary_stop == NULL) {
1707 /* we have no roadstop of the type yet, so write a "primary stop" */
1708 return primary_stop;
1709 } else {
1710 /* there are stops already, so append to the end of the list */
1711 RoadStop *stop = *primary_stop;
1712 while (stop->next != NULL) stop = stop->next;
1713 return &stop->next;
1714 }
1715 }
1716
1717 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags);
1718
1728 static CommandCost FindJoiningRoadStop(StationID existing_stop, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
1729 {
1730 return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_ROAD_STOP_FIRST>(existing_stop, station_to_join, adjacent, ta, st);
1731 }
1732
1749 CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1750 {
1751 bool type = HasBit(p2, 0);
1752 bool is_drive_through = HasBit(p2, 1);
1753 RoadTypes rts = Extract<RoadTypes, 2, 2>(p2);
1754 StationID station_to_join = GB(p2, 16, 16);
1755 bool reuse = (station_to_join != NEW_STATION);
1756 if (!reuse) station_to_join = INVALID_STATION;
1757 bool distant_join = (station_to_join != INVALID_STATION);
1758
1759 uint8 width = (uint8)GB(p1, 0, 8);
1760 uint8 lenght = (uint8)GB(p1, 8, 8);
1761
1762 /* Check if the requested road stop is too big */
1763 if (width > _settings_game.station.station_spread || lenght > _settings_game.station.station_spread) return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
1764 /* Check for incorrect width / length. */
1765 if (width == 0 || lenght == 0) return CMD_ERROR;
1766 /* Check if the first tile and the last tile are valid */
1767 if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, lenght - 1) == INVALID_TILE) return CMD_ERROR;
1768
1769 TileArea roadstop_area(tile, width, lenght);
1770
1771 if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
1772
1773 if (!HasExactlyOneBit(rts) || !HasRoadTypesAvail(_current_company, rts)) return CMD_ERROR;
1774
1775 /* Trams only have drive through stops */
1776 if (!is_drive_through && HasBit(rts, ROADTYPE_TRAM)) return CMD_ERROR;
1777
1778 DiagDirection ddir;
1779 Axis axis;
1780 if (is_drive_through) {
1781 /* By definition axis is valid, due to there being 2 axes and reading 1 bit. */
1782 axis = Extract<Axis, 6, 1>(p2);
1783 ddir = AxisToDiagDir(axis);
1784 } else {
1785 /* By definition ddir is valid, due to there being 4 diagonal directions and reading 2 bits. */
1786 ddir = Extract<DiagDirection, 6, 2>(p2);
1787 axis = DiagDirToAxis(ddir);
1788 }
1789
1790 CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
1791 if (ret.Failed()) return ret;
1792
1793 /* Total road stop cost. */
1794 CommandCost cost(EXPENSES_CONSTRUCTION, roadstop_area.w * roadstop_area.h * _price[type ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
1795 StationID est = INVALID_STATION;
1796 ret = CheckFlatLandRoadStop(roadstop_area, flags, is_drive_through ? 5 << axis : 1 << ddir, is_drive_through, type, axis, &est, rts);
1797 if (ret.Failed()) return ret;
1798 cost.AddCost(ret);
1799
1800 Station *st = NULL;
1801 ret = FindJoiningRoadStop(est, station_to_join, HasBit(p2, 5), roadstop_area, &st);
1802 if (ret.Failed()) return ret;
1803
1804 /* Check if this number of road stops can be allocated. */
1805 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);
1806
1807 ret = BuildStationPart(&st, flags, reuse, roadstop_area, STATIONNAMING_ROAD);
1808 if (ret.Failed()) return ret;
1809
1810 if (flags & DC_EXEC) {
1811 /* Check every tile in the area. */
1812 TILE_AREA_LOOP(cur_tile, roadstop_area) {
1813 RoadTypes cur_rts = GetRoadTypes(cur_tile);
1814 Owner road_owner = HasBit(cur_rts, ROADTYPE_ROAD) ? GetRoadOwner(cur_tile, ROADTYPE_ROAD) : _current_company;
1815 Owner tram_owner = HasBit(cur_rts, ROADTYPE_TRAM) ? GetRoadOwner(cur_tile, ROADTYPE_TRAM) : _current_company;
1816
1817 if (IsTileType(cur_tile, MP_STATION) && IsRoadStop(cur_tile)) {
1818 RemoveRoadStop(cur_tile, flags);
1819 }
1820
1821 RoadStop *road_stop = new RoadStop(cur_tile);
1822 /* Insert into linked list of RoadStops. */
1823 RoadStop **currstop = FindRoadStopSpot(type, st);
1824 *currstop = road_stop;
1825
1826 if (type) {
1827 st->truck_station.Add(cur_tile);
1828 } else {
1829 st->bus_station.Add(cur_tile);
1830 }
1831
1832 /* Initialize an empty station. */
1833 st->AddFacility((type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, cur_tile);
1834
1835 st->rect.BeforeAddTile(cur_tile, StationRect::ADD_TRY);
1836
1837 RoadStopType rs_type = type ? ROADSTOP_TRUCK : ROADSTOP_BUS;
1838 if (is_drive_through) {
1839 /* Update company infrastructure counts. If the current tile is a normal
1840 * road tile, count only the new road bits needed to get a full diagonal road. */
1841 RoadType rt;
1842 FOR_EACH_SET_ROADTYPE(rt, cur_rts | rts) {
1843 Company *c = Company::GetIfValid(rt == ROADTYPE_ROAD ? road_owner : tram_owner);
1844 if (c != NULL) {
1845 c->infrastructure.road[rt] += 2 - (IsNormalRoadTile(cur_tile) && HasBit(cur_rts, rt) ? CountBits(GetRoadBits(cur_tile, rt)) : 0);
1846 DirtyCompanyInfrastructureWindows(c->index);
1847 }
1848 }
1849
1850 MakeDriveThroughRoadStop(cur_tile, st->owner, road_owner, tram_owner, st->index, rs_type, rts | cur_rts, axis);
1851 road_stop->MakeDriveThrough();
1852 } else {
1853 /* Non-drive-through stop never overbuild and always count as two road bits. */
1854 Company::Get(st->owner)->infrastructure.road[FIND_FIRST_BIT(rts)] += 2;
1855 MakeRoadStop(cur_tile, st->owner, st->index, rs_type, rts, ddir);
1856 }
1857 Company::Get(st->owner)->infrastructure.station++;
1858 DirtyCompanyInfrastructureWindows(st->owner);
1859
1860 MarkTileDirtyByTile(cur_tile);
1861 }
1862 }
1863
1864 if (st != NULL) {
1865 st->UpdateVirtCoord();
1866 UpdateStationAcceptance(st, false);
1867 st->RecomputeIndustriesNear();
1868 InvalidateWindowData(WC_SELECT_STATION, 0, 0);
1869 InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
1870 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ROADVEHS);
1871 }
1872 return cost;
1873 }
1874
1875
1876 static Vehicle *ClearRoadStopStatusEnum(Vehicle *v, void *)
1877 {
1878 if (v->type == VEH_ROAD) {
1879 /* Okay... we are a road vehicle on a drive through road stop.
1880 * But that road stop has just been removed, so we need to make
1881 * sure we are in a valid state... however, vehicles can also
1882 * turn on road stop tiles, so only clear the 'road stop' state
1883 * bits and only when the state was 'in road stop', otherwise
1884 * we'll end up clearing the turn around bits. */
1885 RoadVehicle *rv = RoadVehicle::From(v);
1886 if (HasBit(rv->state, RVS_IN_DT_ROAD_STOP)) rv->state &= RVSB_ROAD_STOP_TRACKDIR_MASK;
1887 }
1888
1889 return NULL;
1890 }
1891
1892
1899 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags)
1900 {
1901 Station *st = Station::GetByTile(tile);
1902
1903 if (_current_company != OWNER_WATER) {
1904 CommandCost ret = CheckOwnership(st->owner);
1905 if (ret.Failed()) return ret;
1906 }
1907
1908 bool is_truck = IsTruckStop(tile);
1909
1910 RoadStop **primary_stop;
1911 RoadStop *cur_stop;
1912 if (is_truck) { // truck stop
1913 primary_stop = &st->truck_stops;
1914 cur_stop = RoadStop::GetByTile(tile, ROADSTOP_TRUCK);
1915 } else {
1916 primary_stop = &st->bus_stops;
1917 cur_stop = RoadStop::GetByTile(tile, ROADSTOP_BUS);
1918 }
1919
1920 assert(cur_stop != NULL);
1921
1922 /* don't do the check for drive-through road stops when company bankrupts */
1923 if (IsDriveThroughStopTile(tile) && (flags & DC_BANKRUPT)) {
1924 /* remove the 'going through road stop' status from all vehicles on that tile */
1925 if (flags & DC_EXEC) FindVehicleOnPos(tile, NULL, &ClearRoadStopStatusEnum);
1926 } else {
1927 CommandCost ret = EnsureNoVehicleOnGround(tile);
1928 if (ret.Failed()) return ret;
1929 }
1930
1931 if (flags & DC_EXEC) {
1932 if (*primary_stop == cur_stop) {
1933 /* removed the first stop in the list */
1934 *primary_stop = cur_stop->next;
1935 /* removed the only stop? */
1936 if (*primary_stop == NULL) {
1937 st->facilities &= (is_truck ? ~FACIL_TRUCK_STOP : ~FACIL_BUS_STOP);
1938 }
1939 } else {
1940 /* tell the predecessor in the list to skip this stop */
1941 RoadStop *pred = *primary_stop;
1942 while (pred->next != cur_stop) pred = pred->next;
1943 pred->next = cur_stop->next;
1944 }
1945
1946 /* Update company infrastructure counts. */
1947 RoadType rt;
1948 FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(tile)) {
1949 Company *c = Company::GetIfValid(GetRoadOwner(tile, rt));
1950 if (c != NULL) {
1951 c->infrastructure.road[rt] -= 2;
1952 DirtyCompanyInfrastructureWindows(c->index);
1953 }
1954 }
1955 Company::Get(st->owner)->infrastructure.station--;
1956
1957 if (IsDriveThroughStopTile(tile)) {
1958 /* Clears the tile for us */
1959 cur_stop->ClearDriveThrough();
1960 } else {
1961 DoClearSquare(tile);
1962 }
1963
1964 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ROADVEHS);
1965 delete cur_stop;
1966
1967 /* Make sure no vehicle is going to the old roadstop */
1968 RoadVehicle *v;
1969 FOR_ALL_ROADVEHICLES(v) {
1970 if (v->First() == v && v->current_order.IsType(OT_GOTO_STATION) &&
1971 v->dest_tile == tile) {
1972 v->dest_tile = v->GetOrderStationLocation(st->index);
1973 }
1974 }
1975
1976 st->rect.AfterRemoveTile(st, tile);
1977
1978 st->UpdateVirtCoord();
1979 st->RecomputeIndustriesNear();
1980 DeleteStationIfEmpty(st);
1981
1982 /* Update the tile area of the truck/bus stop */
1983 if (is_truck) {
1984 st->truck_station.Clear();
1985 for (const RoadStop *rs = st->truck_stops; rs != NULL; rs = rs->next) st->truck_station.Add(rs->xy);
1986 } else {
1987 st->bus_station.Clear();
1988 for (const RoadStop *rs = st->bus_stops; rs != NULL; rs = rs->next) st->bus_station.Add(rs->xy);
1989 }
1990 }
1991
1992 return CommandCost(EXPENSES_CONSTRUCTION, _price[is_truck ? PR_CLEAR_STATION_TRUCK : PR_CLEAR_STATION_BUS]);
1993 }
1994
2006 CommandCost CmdRemoveRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2007 {
2008 uint8 width = (uint8)GB(p1, 0, 8);
2009 uint8 height = (uint8)GB(p1, 8, 8);
2010 bool keep_drive_through_roads = !HasBit(p2, 1);
2011
2012 /* Check for incorrect width / height. */
2013 if (width == 0 || height == 0) return CMD_ERROR;
2014 /* Check if the first tile and the last tile are valid */
2015 if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, height - 1) == INVALID_TILE) return CMD_ERROR;
2016 /* Bankrupting company is not supposed to remove roads, there may be road vehicles. */
2017 if (!keep_drive_through_roads && (flags & DC_BANKRUPT)) return CMD_ERROR;
2018
2019 TileArea roadstop_area(tile, width, height);
2020
2021 CommandCost cost(EXPENSES_CONSTRUCTION);
2022 CommandCost last_error(STR_ERROR_THERE_IS_NO_STATION);
2023 bool had_success = false;
2024
2025 TILE_AREA_LOOP(cur_tile, roadstop_area) {
2026 /* Make sure the specified tile is a road stop of the correct type */
2027 if (!IsTileType(cur_tile, MP_STATION) || !IsRoadStop(cur_tile) || (uint32)GetRoadStopType(cur_tile) != GB(p2, 0, 1)) continue;
2028
2029 /* Save information on to-be-restored roads before the stop is removed. */
2030 RoadTypes rts = ROADTYPES_NONE;
2031 RoadBits road_bits = ROAD_NONE;
2032 Owner road_owner[] = { OWNER_NONE, OWNER_NONE };
2033 assert_compile(lengthof(road_owner) == ROADTYPE_END);
2034 if (IsDriveThroughStopTile(cur_tile)) {
2035 RoadType rt;
2036 FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(cur_tile)) {
2037 road_owner[rt] = GetRoadOwner(cur_tile, rt);
2038 /* If we don't want to preserve our roads then restore only roads of others. */
2039 if (keep_drive_through_roads || road_owner[rt] != _current_company) SetBit(rts, rt);
2040 }
2041 road_bits = AxisToRoadBits(DiagDirToAxis(GetRoadStopDir(cur_tile)));
2042 }
2043
2044 CommandCost ret = RemoveRoadStop(cur_tile, flags);
2045 if (ret.Failed()) {
2046 last_error = ret;
2047 continue;
2048 }
2049 cost.AddCost(ret);
2050 had_success = true;
2051
2052 /* Restore roads. */
2053 if ((flags & DC_EXEC) && rts != ROADTYPES_NONE) {
2054 MakeRoadNormal(cur_tile, road_bits, rts, ClosestTownFromTile(cur_tile, UINT_MAX)->index,
2055 road_owner[ROADTYPE_ROAD], road_owner[ROADTYPE_TRAM]);
2056
2057 /* Update company infrastructure counts. */
2058 RoadType rt;
2059 FOR_EACH_SET_ROADTYPE(rt, rts) {
2060 Company *c = Company::GetIfValid(GetRoadOwner(cur_tile, rt));
2061 if (c != NULL) {
2062 c->infrastructure.road[rt] += CountBits(road_bits);
2063 DirtyCompanyInfrastructureWindows(c->index);
2064 }
2065 }
2066 }
2067 }
2068
2069 return had_success ? cost : last_error;
2070 }
2071
2078 static uint GetMinimalAirportDistanceToTile(TileIterator &it, TileIndex town_tile)
2079 {
2080 uint mindist = UINT_MAX;
2081
2082 for (TileIndex cur_tile = it; cur_tile != INVALID_TILE; cur_tile = ++it) {
2083 mindist = min(mindist, DistanceManhattan(town_tile, cur_tile));
2084 }
2085
2086 return mindist;
2087 }
2088
2098 uint8 GetAirportNoiseLevelForTown(const AirportSpec *as, TileIterator &it, TileIndex town_tile)
2099 {
2100 /* 0 cannot be accounted, and 1 is the lowest that can be reduced from town.
2101 * So no need to go any further*/
2102 if (as->noise_level < 2) return as->noise_level;
2103
2104 uint distance = GetMinimalAirportDistanceToTile(it, town_tile);
2105
2106 /* The steps for measuring noise reduction are based on the "magical" (and arbitrary) 8 base distance
2107 * adding the town_council_tolerance 4 times, as a way to graduate, depending of the tolerance.
2108 * Basically, it says that the less tolerant a town is, the bigger the distance before
2109 * an actual decrease can be granted */
2110 uint8 town_tolerance_distance = 8 + (_settings_game.difficulty.town_council_tolerance * 4);
2111
2112 /* now, we want to have the distance segmented using the distance judged bareable by town
2113 * This will give us the coefficient of reduction the distance provides. */
2114 uint noise_reduction = distance / town_tolerance_distance;
2115
2116 /* If the noise reduction equals the airport noise itself, don't give it for free.
2117 * Otherwise, simply reduce the airport's level. */
2118 return noise_reduction >= as->noise_level ? 1 : as->noise_level - noise_reduction;
2119 }
2120
2128 Town *AirportGetNearestTown(const AirportSpec *as, const TileIterator &it)
2129 {
2130 Town *t, *nearest = NULL;
2131 uint add = as->size_x + as->size_y - 2; // GetMinimalAirportDistanceToTile can differ from DistanceManhattan by this much
2132 uint mindist = UINT_MAX - add; // prevent overflow
2133 FOR_ALL_TOWNS(t) {
2134 if (DistanceManhattan(t->xy, it) < mindist + add) { // avoid calling GetMinimalAirportDistanceToTile too often
2135 TileIterator *copy = it.Clone();
2136 uint dist = GetMinimalAirportDistanceToTile(*copy, t->xy);
2137 delete copy;
2138 if (dist < mindist) {
2139 nearest = t;
2140 mindist = dist;
2141 }
2142 }
2143 }
2144
2145 return nearest;
2146 }
2147
2148
2150 void UpdateAirportsNoise()
2151 {
2152 Town *t;
2153 const Station *st;
2154
2155 FOR_ALL_TOWNS(t) t->noise_reached = 0;
2156
2157 FOR_ALL_STATIONS(st) {
2158 if (st->airport.tile != INVALID_TILE && st->airport.type != AT_OILRIG) {
2159 const AirportSpec *as = st->airport.GetSpec();
2160 AirportTileIterator it(st);
2161 Town *nearest = AirportGetNearestTown(as, it);
2162 nearest->noise_reached += GetAirportNoiseLevelForTown(as, it, nearest->xy);
2163 }
2164 }
2165 }
2166
2180 CommandCost CmdBuildAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2181 {
2182 StationID station_to_join = GB(p2, 16, 16);
2183 bool reuse = (station_to_join != NEW_STATION);
2184 if (!reuse) station_to_join = INVALID_STATION;
2185 bool distant_join = (station_to_join != INVALID_STATION);
2186 byte airport_type = GB(p1, 0, 8);
2187 byte layout = GB(p1, 8, 8);
2188
2189 if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
2190
2191 if (airport_type >= NUM_AIRPORTS) return CMD_ERROR;
2192
2193 CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
2194 if (ret.Failed()) return ret;
2195
2196 /* Check if a valid, buildable airport was chosen for construction */
2197 const AirportSpec *as = AirportSpec::Get(airport_type);
2198 if (!as->IsAvailable() || layout >= as->num_table) return CMD_ERROR;
2199
2200 Direction rotation = as->rotation[layout];
2201 int w = as->size_x;
2202 int h = as->size_y;
2203 if (rotation == DIR_E || rotation == DIR_W) Swap(w, h);
2204 TileArea airport_area = TileArea(tile, w, h);
2205
2206 if (w > _settings_game.station.station_spread || h > _settings_game.station.station_spread) {
2207 return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
2208 }
2209
2210 CommandCost cost = CheckFlatLand(airport_area, flags);
2211 if (cost.Failed()) return cost;
2212
2213 /* The noise level is the noise from the airport and reduce it to account for the distance to the town center. */
2214 AirportTileTableIterator iter(as->table[layout], tile);
2215 Town *nearest = AirportGetNearestTown(as, iter);
2216 uint newnoise_level = GetAirportNoiseLevelForTown(as, iter, nearest->xy);
2217
2218 /* Check if local auth would allow a new airport */
2219 StringID authority_refuse_message = STR_NULL;
2220 Town *authority_refuse_town = NULL;
2221
2222 if (_settings_game.economy.station_noise_level) {
2223 /* do not allow to build a new airport if this raise the town noise over the maximum allowed by town */
2224 if ((nearest->noise_reached + newnoise_level) > nearest->MaxTownNoise()) {
2225 authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_NOISE;
2226 authority_refuse_town = nearest;
2227 }
2228 } else {
2229 Town *t = ClosestTownFromTile(tile, UINT_MAX);
2230 uint num = 0;
2231 const Station *st;
2232 FOR_ALL_STATIONS(st) {
2233 if (st->town == t && (st->facilities & FACIL_AIRPORT) && st->airport.type != AT_OILRIG) num++;
2234 }
2235 if (num >= 2) {
2236 authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_AIRPORT;
2237 authority_refuse_town = t;
2238 }
2239 }
2240
2241 if (authority_refuse_message != STR_NULL) {
2242 SetDParam(0, authority_refuse_town->index);
2243 return_cmd_error(authority_refuse_message);
2244 }
2245
2246 Station *st = NULL;
2247 ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 0), airport_area, &st);
2248 if (ret.Failed()) return ret;
2249
2250 /* Distant join */
2251 if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
2252
2253 ret = BuildStationPart(&st, flags, reuse, airport_area, (GetAirport(airport_type)->flags & AirportFTAClass::AIRPLANES) ? STATIONNAMING_AIRPORT : STATIONNAMING_HELIPORT);
2254 if (ret.Failed()) return ret;
2255
2256 if (st != NULL && st->airport.tile != INVALID_TILE) {
2257 return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_AIRPORT);
2258 }
2259
2260 for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
2261 cost.AddCost(_price[PR_BUILD_STATION_AIRPORT]);
2262 }
2263
2264 if (flags & DC_EXEC) {
2265 /* Always add the noise, so there will be no need to recalculate when option toggles */
2266 nearest->noise_reached += newnoise_level;
2267
2268 st->AddFacility(FACIL_AIRPORT, tile);
2269 st->airport.type = airport_type;
2270 st->airport.layout = layout;
2271 st->airport.flags = 0;
2272 st->airport.rotation = rotation;
2273
2274 st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TRY);
2275
2276 for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
2277 MakeAirport(iter, st->owner, st->index, iter.GetStationGfx(), WATER_CLASS_INVALID);
2278 SetStationTileRandomBits(iter, GB(Random(), 0, 4));
2279 st->airport.Add(iter);
2280
2281 if (AirportTileSpec::Get(GetTranslatedAirportTileID(iter.GetStationGfx()))->animation.status != ANIM_STATUS_NO_ANIMATION) AddAnimatedTile(iter);
2282 }
2283
2284 /* Only call the animation trigger after all tiles have been built */
2285 for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
2286 AirportTileAnimationTrigger(st, iter, AAT_BUILT);
2287 }
2288
2289 UpdateAirplanesOnNewStation(st);
2290
2291 Company::Get(st->owner)->infrastructure.airport++;
2292 DirtyCompanyInfrastructureWindows(st->owner);
2293
2294 st->UpdateVirtCoord();
2295 UpdateStationAcceptance(st, false);
2296 st->RecomputeIndustriesNear();
2297 InvalidateWindowData(WC_SELECT_STATION, 0, 0);
2298 InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
2299 InvalidateWindowData(WC_STATION_VIEW, st->index, -1);
2300
2301 if (_settings_game.economy.station_noise_level) {
2302 SetWindowDirty(WC_TOWN_VIEW, st->town->index);
2303 }
2304 }
2305
2306 return cost;
2307 }
2308
2315 static CommandCost RemoveAirport(TileIndex tile, DoCommandFlag flags)
2316 {
2317 Station *st = Station::GetByTile(tile);
2318
2319 if (_current_company != OWNER_WATER) {
2320 CommandCost ret = CheckOwnership(st->owner);
2321 if (ret.Failed()) return ret;
2322 }
2323
2324 tile = st->airport.tile;
2325
2326 CommandCost cost(EXPENSES_CONSTRUCTION);
2327
2328 const Aircraft *a;
2329 FOR_ALL_AIRCRAFT(a) {
2330 if (!a->IsNormalAircraft()) continue;
2331 if (a->targetairport == st->index && a->state != FLYING) return CMD_ERROR;
2332 }
2333
2334 if (flags & DC_EXEC) {
2335 const AirportSpec *as = st->airport.GetSpec();
2336 /* The noise level is the noise from the airport and reduce it to account for the distance to the town center.
2337 * And as for construction, always remove it, even if the setting is not set, in order to avoid the
2338 * need of recalculation */
2339 AirportTileIterator it(st);
2340 Town *nearest = AirportGetNearestTown(as, it);
2341 nearest->noise_reached -= GetAirportNoiseLevelForTown(as, it, nearest->xy);
2342 }
2343
2344 TILE_AREA_LOOP(tile_cur, st->airport) {
2345 if (!st->TileBelongsToAirport(tile_cur)) continue;
2346
2347 CommandCost ret = EnsureNoVehicleOnGround(tile_cur);
2348 if (ret.Failed()) return ret;
2349
2350 cost.AddCost(_price[PR_CLEAR_STATION_AIRPORT]);
2351
2352 if (flags & DC_EXEC) {
2353 if (IsHangarTile(tile_cur)) OrderBackup::Reset(tile_cur, false);
2354 DeleteAnimatedTile(tile_cur);
2355 DoClearSquare(tile_cur);
2356 DeleteNewGRFInspectWindow(GSF_AIRPORTTILES, tile_cur);
2357 }
2358 }
2359
2360 if (flags & DC_EXEC) {
2361 /* Clear the persistent storage. */
2362 delete st->airport.psa;
2363
2364 for (uint i = 0; i < st->airport.GetNumHangars(); ++i) {
2365 DeleteWindowById(
2366 WC_VEHICLE_DEPOT, st->airport.GetHangarTile(i)
2367 );
2368 }
2369
2370 st->rect.AfterRemoveRect(st, st->airport);
2371
2372 st->airport.Clear();
2373 st->facilities &= ~FACIL_AIRPORT;
2374
2375 InvalidateWindowData(WC_STATION_VIEW, st->index, -1);
2376
2377 if (_settings_game.economy.station_noise_level) {
2378 SetWindowDirty(WC_TOWN_VIEW, st->town->index);
2379 }
2380
2381 Company::Get(st->owner)->infrastructure.airport--;
2382 DirtyCompanyInfrastructureWindows(st->owner);
2383
2384 st->UpdateVirtCoord();
2385 st->RecomputeIndustriesNear();
2386 DeleteStationIfEmpty(st);
2387 DeleteNewGRFInspectWindow(GSF_AIRPORTS, st->index);
2388 }
2389
2390 return cost;
2391 }
2392
2402 CommandCost CmdOpenCloseAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2403 {
2404 if (!Station::IsValidID(p1)) return CMD_ERROR;
2405 Station *st = Station::Get(p1);
2406
2407 if (!(st->facilities & FACIL_AIRPORT) || st->owner == OWNER_NONE) return CMD_ERROR;
2408
2409 CommandCost ret = CheckOwnership(st->owner);
2410 if (ret.Failed()) return ret;
2411
2412 if (flags & DC_EXEC) {
2413 st->airport.flags ^= AIRPORT_CLOSED_block;
2414 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_CLOSE_AIRPORT);
2415 }
2416 return CommandCost();
2417 }
2418
2425 bool HasStationInUse(StationID station, bool include_company, CompanyID company)
2426 {
2427 const Vehicle *v;
2428 FOR_ALL_VEHICLES(v) {
2429 if ((v->owner == company) == include_company) {
2430 const Order *order;
2431 FOR_VEHICLE_ORDERS(v, order) {
2432 if ((order->IsType(OT_GOTO_STATION) || order->IsType(OT_GOTO_WAYPOINT)) && order->GetDestination() == station) {
2433 return true;
2434 }
2435 }
2436 }
2437 }
2438 return false;
2439 }
2440
2441 static const TileIndexDiffC _dock_tileoffs_chkaround[] = {
2442 {-1, 0},
2443 { 0, 0},
2444 { 0, 0},
2445 { 0, -1}
2446 };
2447 static const byte _dock_w_chk[4] = { 2, 1, 2, 1 };
2448 static const byte _dock_h_chk[4] = { 1, 2, 1, 2 };
2449
2459 CommandCost CmdBuildDock(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2460 {
2461 StationID station_to_join = GB(p2, 16, 16);
2462 bool reuse = (station_to_join != NEW_STATION);
2463 if (!reuse) station_to_join = INVALID_STATION;
2464 bool distant_join = (station_to_join != INVALID_STATION);
2465
2466 if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
2467
2468 DiagDirection direction = GetInclinedSlopeDirection(GetTileSlope(tile));
2469 if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2470 direction = ReverseDiagDir(direction);
2471
2472 /* Docks cannot be placed on rapids */
2473 if (HasTileWaterGround(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2474
2475 CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
2476 if (ret.Failed()) return ret;
2477
2478 if (IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
2479
2480 ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
2481 if (ret.Failed()) return ret;
2482
2483 TileIndex tile_cur = tile + TileOffsByDiagDir(direction);
2484
2485 if (!IsTileType(tile_cur, MP_WATER) || !IsTileFlat(tile_cur)) {
2486 return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2487 }
2488
2489 if (IsBridgeAbove(tile_cur)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
2490
2491 /* Get the water class of the water tile before it is cleared.*/
2492 WaterClass wc = GetWaterClass(tile_cur);
2493
2494 ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
2495 if (ret.Failed()) return ret;
2496
2497 tile_cur += TileOffsByDiagDir(direction);
2498 if (!IsTileType(tile_cur, MP_WATER) || !IsTileFlat(tile_cur)) {
2499 return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2500 }
2501
2502 TileArea dock_area = TileArea(tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
2503 _dock_w_chk[direction], _dock_h_chk[direction]);
2504
2505 /* middle */
2506 Station *st = NULL;
2507 ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p1, 0), dock_area, &st);
2508 if (ret.Failed()) return ret;
2509
2510 /* Distant join */
2511 if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
2512
2513 ret = BuildStationPart(&st, flags, reuse, dock_area, STATIONNAMING_DOCK);
2514 if (ret.Failed()) return ret;
2515
2516 if (st != NULL && st->dock_tile != INVALID_TILE) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_DOCK);
2517
2518 if (flags & DC_EXEC) {
2519 st->dock_tile = tile;
2520 st->AddFacility(FACIL_DOCK, tile);
2521
2522 st->rect.BeforeAddRect(dock_area.tile, dock_area.w, dock_area.h, StationRect::ADD_TRY);
2523
2524 /* If the water part of the dock is on a canal, update infrastructure counts.
2525 * This is needed as we've unconditionally cleared that tile before. */
2526 if (wc == WATER_CLASS_CANAL) {
2527 Company::Get(st->owner)->infrastructure.water++;
2528 }
2529 Company::Get(st->owner)->infrastructure.station += 2;
2530 DirtyCompanyInfrastructureWindows(st->owner);
2531
2532 MakeDock(tile, st->owner, st->index, direction, wc);
2533
2534 st->UpdateVirtCoord();
2535 UpdateStationAcceptance(st, false);
2536 st->RecomputeIndustriesNear();
2537 InvalidateWindowData(WC_SELECT_STATION, 0, 0);
2538 InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
2539 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_SHIPS);
2540 }
2541
2542 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_STATION_DOCK]);
2543 }
2544
2551 static CommandCost RemoveDock(TileIndex tile, DoCommandFlag flags)
2552 {
2553 Station *st = Station::GetByTile(tile);
2554 CommandCost ret = CheckOwnership(st->owner);
2555 if (ret.Failed()) return ret;
2556
2557 TileIndex docking_location = TILE_ADD(st->dock_tile, ToTileIndexDiff(GetDockOffset(st->dock_tile)));
2558
2559 TileIndex tile1 = st->dock_tile;
2560 TileIndex tile2 = tile1 + TileOffsByDiagDir(GetDockDirection(tile1));
2561
2562 ret = EnsureNoVehicleOnGround(tile1);
2563 if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile2);
2564 if (ret.Failed()) return ret;
2565
2566 if (flags & DC_EXEC) {
2567 DoClearSquare(tile1);
2568 MarkTileDirtyByTile(tile1);
2569 MakeWaterKeepingClass(tile2, st->owner);
2570
2571 st->rect.AfterRemoveTile(st, tile1);
2572 st->rect.AfterRemoveTile(st, tile2);
2573
2574 st->dock_tile = INVALID_TILE;
2575 st->facilities &= ~FACIL_DOCK;
2576
2577 Company::Get(st->owner)->infrastructure.station -= 2;
2578 DirtyCompanyInfrastructureWindows(st->owner);
2579
2580 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_SHIPS);
2581 st->UpdateVirtCoord();
2582 st->RecomputeIndustriesNear();
2583 DeleteStationIfEmpty(st);
2584
2585 /* All ships that were going to our station, can't go to it anymore.
2586 * Just clear the order, then automatically the next appropriate order
2587 * will be selected and in case of no appropriate order it will just
2588 * wander around the world. */
2589 Ship *s;
2590 FOR_ALL_SHIPS(s) {
2591 if (s->current_order.IsType(OT_LOADING) && s->tile == docking_location) {
2592 s->LeaveStation();
2593 }
2594
2595 if (s->dest_tile == docking_location) {
2596 s->dest_tile = 0;
2597 s->current_order.Free();
2598 }
2599 }
2600 }
2601
2602 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_STATION_DOCK]);
2603 }
2604
2605 #include "table/station_land.h"
2606
2607 const DrawTileSprites *GetStationTileLayout(StationType st, byte gfx)
2608 {
2609 return &_station_display_datas[st][gfx];
2610 }
2611
2621 bool SplitGroundSpriteForOverlay(const TileInfo *ti, SpriteID *ground, RailTrackOffset *overlay_offset)
2622 {
2623 bool snow_desert;
2624 switch (*ground) {
2625 case SPR_RAIL_TRACK_X:
2626 snow_desert = false;
2627 *overlay_offset = RTO_X;
2628 break;
2629
2630 case SPR_RAIL_TRACK_Y:
2631 snow_desert = false;
2632 *overlay_offset = RTO_Y;
2633 break;
2634
2635 case SPR_RAIL_TRACK_X_SNOW:
2636 snow_desert = true;
2637 *overlay_offset = RTO_X;
2638 break;
2639
2640 case SPR_RAIL_TRACK_Y_SNOW:
2641 snow_desert = true;
2642 *overlay_offset = RTO_Y;
2643 break;
2644
2645 default:
2646 return false;
2647 }
2648
2649 if (ti != NULL) {
2650 /* Decide snow/desert from tile */
2651 switch (_settings_game.game_creation.landscape) {
2652 case LT_ARCTIC:
2653 snow_desert = (uint)ti->z > GetSnowLine() * TILE_HEIGHT;
2654 break;
2655
2656 case LT_TROPIC:
2657 snow_desert = GetTropicZone(ti->tile) == TROPICZONE_DESERT;
2658 break;
2659
2660 default:
2661 break;
2662 }
2663 }
2664
2665 *ground = snow_desert ? SPR_FLAT_SNOW_DESERT_TILE : SPR_FLAT_GRASS_TILE;
2666 return true;
2667 }
2668
2669 static void DrawTile_Station(TileInfo *ti)
2670 {
2671 const NewGRFSpriteLayout *layout = NULL;
2672 DrawTileSprites tmp_rail_layout;
2673 const DrawTileSprites *t = NULL;
2674 RoadTypes roadtypes;
2675 int32 total_offset;
2676 const RailtypeInfo *rti = NULL;
2677 uint32 relocation = 0;
2678 uint32 ground_relocation = 0;
2679 BaseStation *st = NULL;
2680 const StationSpec *statspec = NULL;
2681 uint tile_layout = 0;
2682
2683 if (HasStationRail(ti->tile)) {
2684 rti = GetRailTypeInfo(GetRailType(ti->tile));
2685 roadtypes = ROADTYPES_NONE;
2686 total_offset = rti->GetRailtypeSpriteOffset();
2687
2688 if (IsCustomStationSpecIndex(ti->tile)) {
2689 /* look for customization */
2690 st = BaseStation::GetByTile(ti->tile);
2691 statspec = st->speclist[GetCustomStationSpecIndex(ti->tile)].spec;
2692
2693 if (statspec != NULL) {
2694 tile_layout = GetStationGfx(ti->tile);
2695
2696 if (HasBit(statspec->callback_mask, CBM_STATION_SPRITE_LAYOUT)) {
2697 uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0, 0, statspec, st, ti->tile);
2698 if (callback != CALLBACK_FAILED) tile_layout = (callback & ~1) + GetRailStationAxis(ti->tile);
2699 }
2700
2701 /* Ensure the chosen tile layout is valid for this custom station */
2702 if (statspec->renderdata != NULL) {
2703 layout = &statspec->renderdata[tile_layout < statspec->tiles ? tile_layout : (uint)GetRailStationAxis(ti->tile)];
2704 if (!layout->NeedsPreprocessing()) {
2705 t = layout;
2706 layout = NULL;
2707 }
2708 }
2709 }
2710 }
2711 } else {
2712 roadtypes = IsRoadStop(ti->tile) ? GetRoadTypes(ti->tile) : ROADTYPES_NONE;
2713 total_offset = 0;
2714 }
2715
2716 StationGfx gfx = GetStationGfx(ti->tile);
2717 if (IsAirport(ti->tile)) {
2718 gfx = GetAirportGfx(ti->tile);
2719 if (gfx >= NEW_AIRPORTTILE_OFFSET) {
2720 const AirportTileSpec *ats = AirportTileSpec::Get(gfx);
2721 if (ats->grf_prop.spritegroup[0] != NULL && DrawNewAirportTile(ti, Station::GetByTile(ti->tile), gfx, ats)) {
2722 return;
2723 }
2724 /* No sprite group (or no valid one) found, meaning no graphics associated.
2725 * Use the substitute one instead */
2726 assert(ats->grf_prop.subst_id != INVALID_AIRPORTTILE);
2727 gfx = ats->grf_prop.subst_id;
2728 }
2729 switch (gfx) {
2730 case APT_RADAR_GRASS_FENCE_SW:
2731 t = &_station_display_datas_airport_radar_grass_fence_sw[GetAnimationFrame(ti->tile)];
2732 break;
2733 case APT_GRASS_FENCE_NE_FLAG:
2734 t = &_station_display_datas_airport_flag_grass_fence_ne[GetAnimationFrame(ti->tile)];
2735 break;
2736 case APT_RADAR_FENCE_SW:
2737 t = &_station_display_datas_airport_radar_fence_sw[GetAnimationFrame(ti->tile)];
2738 break;
2739 case APT_RADAR_FENCE_NE:
2740 t = &_station_display_datas_airport_radar_fence_ne[GetAnimationFrame(ti->tile)];
2741 break;
2742 case APT_GRASS_FENCE_NE_FLAG_2:
2743 t = &_station_display_datas_airport_flag_grass_fence_ne_2[GetAnimationFrame(ti->tile)];
2744 break;
2745 }
2746 }
2747
2748 Owner owner = GetTileOwner(ti->tile);
2749
2750 PaletteID palette;
2751 if (Company::IsValidID(owner)) {
2752 palette = COMPANY_SPRITE_COLOUR(owner);
2753 } else {
2754 /* Some stations are not owner by a company, namely oil rigs */
2755 palette = PALETTE_TO_GREY;
2756 }
2757
2758 if (layout == NULL && (t == NULL || t->seq == NULL)) t = GetStationTileLayout(GetStationType(ti->tile), gfx);
2759
2760 /* don't show foundation for docks */
2761 if (ti->tileh != SLOPE_FLAT && !IsDock(ti->tile)) {
2762 if (statspec != NULL && HasBit(statspec->flags, SSF_CUSTOM_FOUNDATIONS)) {
2763 /* Station has custom foundations.
2764 * Check whether the foundation continues beyond the tile's upper sides. */
2765 uint edge_info = 0;
2766 int z;
2767 Slope slope = GetFoundationPixelSlope(ti->tile, &z);
2768 if (!HasFoundationNW(ti->tile, slope, z)) SetBit(edge_info, 0);
2769 if (!HasFoundationNE(ti->tile, slope, z)) SetBit(edge_info, 1);
2770 SpriteID image = GetCustomStationFoundationRelocation(statspec, st, ti->tile, tile_layout, edge_info);
2771 if (image == 0) goto draw_default_foundation;
2772
2773 if (HasBit(statspec->flags, SSF_EXTENDED_FOUNDATIONS)) {
2774 /* Station provides extended foundations. */
2775
2776 static const uint8 foundation_parts[] = {
2777 0, 0, 0, 0, // Invalid, Invalid, Invalid, SLOPE_SW
2778 0, 1, 2, 3, // Invalid, SLOPE_EW, SLOPE_SE, SLOPE_WSE
2779 0, 4, 5, 6, // Invalid, SLOPE_NW, SLOPE_NS, SLOPE_NWS
2780 7, 8, 9 // SLOPE_NE, SLOPE_ENW, SLOPE_SEN
2781 };
2782
2783 AddSortableSpriteToDraw(image + foundation_parts[ti->tileh], PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
2784 } else {
2785 /* Draw simple foundations, built up from 8 possible foundation sprites. */
2786
2787 /* Each set bit represents one of the eight composite sprites to be drawn.
2788 * 'Invalid' entries will not drawn but are included for completeness. */
2789 static const uint8 composite_foundation_parts[] = {
2790 /* Invalid (00000000), Invalid (11010001), Invalid (11100100), SLOPE_SW (11100000) */
2791 0x00, 0xD1, 0xE4, 0xE0,
2792 /* Invalid (11001010), SLOPE_EW (11001001), SLOPE_SE (11000100), SLOPE_WSE (11000000) */
2793 0xCA, 0xC9, 0xC4, 0xC0,
2794 /* Invalid (11010010), SLOPE_NW (10010001), SLOPE_NS (11100100), SLOPE_NWS (10100000) */
2795 0xD2, 0x91, 0xE4, 0xA0,
2796 /* SLOPE_NE (01001010), SLOPE_ENW (00001001), SLOPE_SEN (01000100) */
2797 0x4A, 0x09, 0x44
2798 };
2799
2800 uint8 parts = composite_foundation_parts[ti->tileh];
2801
2802 /* If foundations continue beyond the tile's upper sides then
2803 * mask out the last two pieces. */
2804 if (HasBit(edge_info, 0)) ClrBit(parts, 6);
2805 if (HasBit(edge_info, 1)) ClrBit(parts, 7);
2806
2807 if (parts == 0) {
2808 /* We always have to draw at least one sprite to make sure there is a boundingbox and a sprite with the
2809 * correct offset for the childsprites.
2810 * So, draw the (completely empty) sprite of the default foundations. */
2811 goto draw_default_foundation;
2812 }
2813
2814 StartSpriteCombine();
2815 for (int i = 0; i < 8; i++) {
2816 if (HasBit(parts, i)) {
2817 AddSortableSpriteToDraw(image + i, PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
2818 }
2819 }
2820 EndSpriteCombine();
2821 }
2822
2823 OffsetGroundSprite(31, 1);
2824 ti->z += ApplyPixelFoundationToSlope(FOUNDATION_LEVELED, &ti->tileh);
2825 } else {
2826 draw_default_foundation:
2827 DrawFoundation(ti, FOUNDATION_LEVELED);
2828 }
2829 }
2830
2831 if (IsBuoy(ti->tile)) {
2832 DrawWaterClassGround(ti);
2833 SpriteID sprite = GetCanalSprite(CF_BUOY, ti->tile);
2834 if (sprite != 0) total_offset = sprite - SPR_IMG_BUOY;
2835 } else if (IsDock(ti->tile) || (IsOilRig(ti->tile) && IsTileOnWater(ti->tile))) {
2836 if (ti->tileh == SLOPE_FLAT) {
2837 DrawWaterClassGround(ti);
2838 } else {
2839 assert(IsDock(ti->tile));
2840 TileIndex water_tile = ti->tile + TileOffsByDiagDir(GetDockDirection(ti->tile));
2841 WaterClass wc = GetWaterClass(water_tile);
2842 if (wc == WATER_CLASS_SEA) {
2843 DrawShoreTile(ti->tileh);
2844 } else {
2845 DrawClearLandTile(ti, 3);
2846 }
2847 }
2848 } else {
2849 if (layout != NULL) {
2850 /* Sprite layout which needs preprocessing */
2851 bool separate_ground = HasBit(statspec->flags, SSF_SEPARATE_GROUND);
2852 uint32 var10_values = layout->PrepareLayout(total_offset, rti->fallback_railtype, 0, 0, separate_ground);
2853 uint8 var10;
2854 FOR_EACH_SET_BIT(var10, var10_values) {
2855 uint32 var10_relocation = GetCustomStationRelocation(statspec, st, ti->tile, var10);
2856 layout->ProcessRegisters(var10, var10_relocation, separate_ground);
2857 }
2858 tmp_rail_layout.seq = layout->GetLayout(&tmp_rail_layout.ground);
2859 t = &tmp_rail_layout;
2860 total_offset = 0;
2861 } else if (statspec != NULL) {
2862 /* Simple sprite layout */
2863 ground_relocation = relocation = GetCustomStationRelocation(statspec, st, ti->tile, 0);
2864 if (HasBit(statspec->flags, SSF_SEPARATE_GROUND)) {
2865 ground_relocation = GetCustomStationRelocation(statspec, st, ti->tile, 1);
2866 }
2867 ground_relocation += rti->fallback_railtype;
2868 }
2869
2870 SpriteID image = t->ground.sprite;
2871 PaletteID pal = t->ground.pal;
2872 RailTrackOffset overlay_offset;
2873 if (rti != NULL && rti->UsesOverlay() && SplitGroundSpriteForOverlay(ti, &image, &overlay_offset)) {
2874 SpriteID ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND);
2875 DrawGroundSprite(image, PAL_NONE);
2876 DrawGroundSprite(ground + overlay_offset, PAL_NONE);
2877
2878 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationReservation(ti->tile)) {
2879 SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
2880 DrawGroundSprite(overlay + overlay_offset, PALETTE_CRASH);
2881 }
2882 } else {
2883 image += HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? ground_relocation : total_offset;
2884 if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += ground_relocation;
2885 DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, palette));
2886
2887 /* PBS debugging, draw reserved tracks darker */
2888 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationRail(ti->tile) && HasStationReservation(ti->tile)) {
2889 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
2890 DrawGroundSprite(GetRailStationAxis(ti->tile) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
2891 }
2892 }
2893 }
2894
2895 if (HasStationRail(ti->tile) && HasCatenaryDrawn(GetRailType(ti->tile))) DrawCatenary(ti);
2896
2897 if (HasBit(roadtypes, ROADTYPE_TRAM)) {
2898 Axis axis = GetRoadStopDir(ti->tile) == DIAGDIR_NE ? AXIS_X : AXIS_Y;
2899 DrawGroundSprite((HasBit(roadtypes, ROADTYPE_ROAD) ? SPR_TRAMWAY_OVERLAY : SPR_TRAMWAY_TRAM) + (axis ^ 1), PAL_NONE);
2900 DrawTramCatenary(ti, axis == AXIS_X ? ROAD_X : ROAD_Y);
2901 }
2902
2903 if (IsRailWaypoint(ti->tile)) {
2904 /* Don't offset the waypoint graphics; they're always the same. */
2905 total_offset = 0;
2906 }
2907
2908 DrawRailTileSeq(ti, t, TO_BUILDINGS, total_offset, relocation, palette);
2909 }
2910
2911 void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, RoadType roadtype, int image)
2912 {
2913 int32 total_offset = 0;
2914 PaletteID pal = COMPANY_SPRITE_COLOUR(_local_company);
2915 const DrawTileSprites *t = GetStationTileLayout(st, image);
2916 const RailtypeInfo *rti = NULL;
2917
2918 if (railtype != INVALID_RAILTYPE) {
2919 rti = GetRailTypeInfo(railtype);
2920 total_offset = rti->GetRailtypeSpriteOffset();
2921 }
2922
2923 SpriteID img = t->ground.sprite;
2924 RailTrackOffset overlay_offset;
2925 if (rti != NULL && rti->UsesOverlay() && SplitGroundSpriteForOverlay(NULL, &img, &overlay_offset)) {
2926 SpriteID ground = GetCustomRailSprite(rti, INVALID_TILE, RTSG_GROUND);
2927 DrawSprite(img, PAL_NONE, x, y);
2928 DrawSprite(ground + overlay_offset, PAL_NONE, x, y);
2929 } else {
2930 DrawSprite(img + total_offset, HasBit(img, PALETTE_MODIFIER_COLOUR) ? pal : PAL_NONE, x, y);
2931 }
2932
2933 if (roadtype == ROADTYPE_TRAM) {
2934 DrawSprite(SPR_TRAMWAY_TRAM + (t->ground.sprite == SPR_ROAD_PAVED_STRAIGHT_X ? 1 : 0), PAL_NONE, x, y);
2935 }
2936
2937 /* Default waypoint has no railtype specific sprites */
2938 DrawRailTileSeqInGUI(x, y, t, st == STATION_WAYPOINT ? 0 : total_offset, 0, pal);
2939 }
2940
2941 static int GetSlopePixelZ_Station(TileIndex tile, uint x, uint y)
2942 {
2943 return GetTileMaxPixelZ(tile);
2944 }
2945
2946 static Foundation GetFoundation_Station(TileIndex tile, Slope tileh)
2947 {
2948 return FlatteningFoundation(tileh);
2949 }
2950
2951 static void GetTileDesc_Station(TileIndex tile, TileDesc *td)
2952 {
2953 td->owner[0] = GetTileOwner(tile);
2954 if (IsDriveThroughStopTile(tile)) {
2955 Owner road_owner = INVALID_OWNER;
2956 Owner tram_owner = INVALID_OWNER;
2957 RoadTypes rts = GetRoadTypes(tile);
2958 if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
2959 if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
2960
2961 /* Is there a mix of owners? */
2962 if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
2963 (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
2964 uint i = 1;
2965 if (road_owner != INVALID_OWNER) {
2966 td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
2967 td->owner[i] = road_owner;
2968 i++;
2969 }
2970 if (tram_owner != INVALID_OWNER) {
2971 td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
2972 td->owner[i] = tram_owner;
2973 }
2974 }
2975 }
2976 td->build_date = BaseStation::GetByTile(tile)->build_date;
2977
2978 if (HasStationTileRail(tile)) {
2979 const StationSpec *spec = GetStationSpec(tile);
2980
2981 if (spec != NULL) {
2982 td->station_class = StationClass::Get(spec->cls_id)->name;
2983 td->station_name = spec->name;
2984
2985 if (spec->grf_prop.grffile != NULL) {
2986 const GRFConfig *gc = GetGRFConfig(spec->grf_prop.grffile->grfid);
2987 td->grf = gc->GetName();
2988 }
2989 }
2990
2991 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
2992 td->rail_speed = rti->max_speed;
2993 }
2994
2995 if (IsAirport(tile)) {
2996 const AirportSpec *as = Station::GetByTile(tile)->airport.GetSpec();
2997 td->airport_class = AirportClass::Get(as->cls_id)->name;
2998 td->airport_name = as->name;
2999
3000 const AirportTileSpec *ats = AirportTileSpec::GetByTile(tile);
3001 td->airport_tile_name = ats->name;
3002
3003 if (as->grf_prop.grffile != NULL) {
3004 const GRFConfig *gc = GetGRFConfig(as->grf_prop.grffile->grfid);
3005 td->grf = gc->GetName();
3006 } else if (ats->grf_prop.grffile != NULL) {
3007 const GRFConfig *gc = GetGRFConfig(ats->grf_prop.grffile->grfid);
3008 td->grf = gc->GetName();
3009 }
3010 }
3011
3012 StringID str;
3013 switch (GetStationType(tile)) {
3014 default: NOT_REACHED();
3015 case STATION_RAIL: str = STR_LAI_STATION_DESCRIPTION_RAILROAD_STATION; break;
3016 case STATION_AIRPORT:
3017 str = (IsHangar(tile) ? STR_LAI_STATION_DESCRIPTION_AIRCRAFT_HANGAR : STR_LAI_STATION_DESCRIPTION_AIRPORT);
3018 break;
3019 case STATION_TRUCK: str = STR_LAI_STATION_DESCRIPTION_TRUCK_LOADING_AREA; break;
3020 case STATION_BUS: str = STR_LAI_STATION_DESCRIPTION_BUS_STATION; break;
3021 case STATION_OILRIG: str = STR_INDUSTRY_NAME_OIL_RIG; break;
3022 case STATION_DOCK: str = STR_LAI_STATION_DESCRIPTION_SHIP_DOCK; break;
3023 case STATION_BUOY: str = STR_LAI_STATION_DESCRIPTION_BUOY; break;
3024 case STATION_WAYPOINT: str = STR_LAI_STATION_DESCRIPTION_WAYPOINT; break;
3025 }
3026 td->str = str;
3027 }
3028
3029
3030 static TrackStatus GetTileTrackStatus_Station(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
3031 {
3032 TrackBits trackbits = TRACK_BIT_NONE;
3033
3034 switch (mode) {
3035 case TRANSPORT_RAIL:
3036 if (HasStationRail(tile) && !IsStationTileBlocked(tile)) {
3037 trackbits = TrackToTrackBits(GetRailStationTrack(tile));
3038 }
3039 break;
3040
3041 case TRANSPORT_WATER:
3042 /* buoy is coded as a station, it is always on open water */
3043 if (IsBuoy(tile)) {
3044 trackbits = TRACK_BIT_ALL;
3045 /* remove tracks that connect NE map edge */
3046 if (TileX(tile) == 0) trackbits &= ~(TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_RIGHT);
3047 /* remove tracks that connect NW map edge */
3048 if (TileY(tile) == 0) trackbits &= ~(TRACK_BIT_Y | TRACK_BIT_LEFT | TRACK_BIT_UPPER);
3049 }
3050 break;
3051
3052 case TRANSPORT_ROAD:
3053 if ((GetRoadTypes(tile) & sub_mode) != 0 && IsRoadStop(tile)) {
3054 DiagDirection dir = GetRoadStopDir(tile);
3055 Axis axis = DiagDirToAxis(dir);
3056
3057 if (side != INVALID_DIAGDIR) {
3058 if (axis != DiagDirToAxis(side) || (IsStandardRoadStopTile(tile) && dir != side)) break;
3059 }
3060
3061 trackbits = AxisToTrackBits(axis);
3062 }
3063 break;
3064
3065 default:
3066 break;
3067 }
3068
3069 return CombineTrackStatus(TrackBitsToTrackdirBits(trackbits), TRACKDIR_BIT_NONE);
3070 }
3071
3072
3073 static void TileLoop_Station(TileIndex tile)
3074 {
3075 /* FIXME -- GetTileTrackStatus_Station -> animated stationtiles
3076 * hardcoded.....not good */
3077 switch (GetStationType(tile)) {
3078 case STATION_AIRPORT:
3079 AirportTileAnimationTrigger(Station::GetByTile(tile), tile, AAT_TILELOOP);
3080 break;
3081
3082 case STATION_DOCK:
3083 if (!IsTileFlat(tile)) break; // only handle water part
3084 /* FALL THROUGH */
3085 case STATION_OILRIG: //(station part)
3086 case STATION_BUOY:
3087 TileLoop_Water(tile);
3088 break;
3089
3090 default: break;
3091 }
3092 }
3093
3094
3095 static void AnimateTile_Station(TileIndex tile)
3096 {
3097 if (HasStationRail(tile)) {
3098 AnimateStationTile(tile);
3099 return;
3100 }
3101
3102 if (IsAirport(tile)) {
3103 AnimateAirportTile(tile);
3104 }
3105 }
3106
3107
3108 static bool ClickTile_Station(TileIndex tile)
3109 {
3110 const BaseStation *bst = BaseStation::GetByTile(tile);
3111
3112 if (bst->facilities & FACIL_WAYPOINT) {
3113 ShowWaypointWindow(Waypoint::From(bst));
3114 } else if (IsHangar(tile)) {
3115 const Station *st = Station::From(bst);
3116 ShowDepotWindow(st->airport.GetHangarTile(st->airport.GetHangarNum(tile)), VEH_AIRCRAFT);
3117 } else {
3118 ShowStationViewWindow(bst->index);
3119 }
3120 return true;
3121 }
3122
3123 static VehicleEnterTileStatus VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
3124 {
3125 if (v->type == VEH_TRAIN) {
3126 StationID station_id = GetStationIndex(tile);
3127 if (!v->current_order.ShouldStopAtStation(v, station_id)) return VETSB_CONTINUE;
3128 if (!IsRailStation(tile) || !v->IsFrontEngine()) return VETSB_CONTINUE;
3129
3130 int station_ahead;
3131 int station_length;
3132 int stop = GetTrainStopLocation(station_id, tile, Train::From(v), &station_ahead, &station_length);
3133
3134 /* Stop whenever that amount of station ahead + the distance from the
3135 * begin of the platform to the stop location is longer than the length
3136 * of the platform. Station ahead 'includes' the current tile where the
3137 * vehicle is on, so we need to subtract that. */
3138 if (stop + station_ahead - (int)TILE_SIZE >= station_length) return VETSB_CONTINUE;
3139
3140 DiagDirection dir = DirToDiagDir(v->direction);
3141
3142 x &= 0xF;
3143 y &= 0xF;
3144
3145 if (DiagDirToAxis(dir) != AXIS_X) Swap(x, y);
3146 if (y == TILE_SIZE / 2) {
3147 if (dir != DIAGDIR_SE && dir != DIAGDIR_SW) x = TILE_SIZE - 1 - x;
3148 stop &= TILE_SIZE - 1;
3149
3150 if (x == stop) {
3151 return VETSB_ENTERED_STATION | (VehicleEnterTileStatus)(station_id << VETS_STATION_ID_OFFSET); // enter station
3152 } else if (x < stop) {
3153 v->vehstatus |= VS_TRAIN_SLOWING;
3154 uint16 spd = max(0, (stop - x) * 20 - 15);
3155 if (spd < v->cur_speed) v->cur_speed = spd;
3156 }
3157 }
3158 } else if (v->type == VEH_ROAD) {
3159 RoadVehicle *rv = RoadVehicle::From(v);
3160 if (rv->state < RVSB_IN_ROAD_STOP && !IsReversingRoadTrackdir((Trackdir)rv->state) && rv->frame == 0) {
3161 if (IsRoadStop(tile) && rv->IsFrontEngine()) {
3162 /* Attempt to allocate a parking bay in a road stop */
3163 return RoadStop::GetByTile(tile, GetRoadStopType(tile))->Enter(rv) ? VETSB_CONTINUE : VETSB_CANNOT_ENTER;
3164 }
3165 }
3166 }
3167
3168 return VETSB_CONTINUE;
3169 }
3170
3175 void TriggerWatchedCargoCallbacks(Station *st)
3176 {
3177 /* Collect cargoes accepted since the last big tick. */
3178 uint cargoes = 0;
3179 for (CargoID cid = 0; cid < NUM_CARGO; cid++) {
3180 if (HasBit(st->goods[cid].status, GoodsEntry::GES_ACCEPTED_BIGTICK)) SetBit(cargoes, cid);
3181 }
3182
3183 /* Anything to do? */
3184 if (cargoes == 0) return;
3185
3186 /* Loop over all houses in the catchment. */
3187 Rect r = st->GetCatchmentRect();
3188 TileArea ta(TileXY(r.left, r.top), TileXY(r.right, r.bottom));
3189 TILE_AREA_LOOP(tile, ta) {
3190 if (IsTileType(tile, MP_HOUSE)) {
3191 WatchedCargoCallback(tile, cargoes);
3192 }
3193 }
3194 }
3195
3202 static bool StationHandleBigTick(BaseStation *st)
3203 {
3204 if (!st->IsInUse()) {
3205 if (++st->delete_ctr >= 8) delete st;
3206 return false;
3207 }
3208
3209 if (Station::IsExpected(st)) {
3210 TriggerWatchedCargoCallbacks(Station::From(st));
3211
3212 for (CargoID i = 0; i < NUM_CARGO; i++) {
3213 ClrBit(Station::From(st)->goods[i].status, GoodsEntry::GES_ACCEPTED_BIGTICK);
3214 }
3215 }
3216
3217
3218 if ((st->facilities & FACIL_WAYPOINT) == 0) UpdateStationAcceptance(Station::From(st), true);
3219
3220 return true;
3221 }
3222
3223 static inline void byte_inc_sat(byte *p)
3224 {
3225 byte b = *p + 1;
3226 if (b != 0) *p = b;
3227 }
3228
3235 static void TruncateCargo(const CargoSpec *cs, GoodsEntry *ge, uint amount = UINT_MAX)
3236 {
3237 /* If truncating also punish the source stations' ratings to
3238 * decrease the flow of incoming cargo. */
3239
3240 StationCargoAmountMap waiting_per_source;
3241 ge->cargo.Truncate(amount, &waiting_per_source);
3242 for (StationCargoAmountMap::iterator i(waiting_per_source.begin()); i != waiting_per_source.end(); ++i) {
3243 Station *source_station = Station::GetIfValid(i->first);
3244 if (source_station == NULL) continue;
3245
3246 GoodsEntry &source_ge = source_station->goods[cs->Index()];
3247 source_ge.max_waiting_cargo = max(source_ge.max_waiting_cargo, i->second);
3248 }
3249 }
3250
3251 static void UpdateStationRating(Station *st)
3252 {
3253 bool waiting_changed = false;
3254
3255 byte_inc_sat(&st->time_since_load);
3256 byte_inc_sat(&st->time_since_unload);
3257
3258 const CargoSpec *cs;
3259 FOR_ALL_CARGOSPECS(cs) {
3260 GoodsEntry *ge = &st->goods[cs->Index()];
3261 /* Slowly increase the rating back to his original level in the case we
3262 * didn't deliver cargo yet to this station. This happens when a bribe
3263 * failed while you didn't moved that cargo yet to a station. */
3264 if (!ge->HasRating() && ge->rating < INITIAL_STATION_RATING) {
3265 ge->rating++;
3266 }
3267
3268 /* Only change the rating if we are moving this cargo */
3269 if (ge->HasRating()) {
3270 byte_inc_sat(&ge->time_since_pickup);
3271 if (ge->time_since_pickup == 255 && _settings_game.order.selectgoods) {
3272 ClrBit(ge->status, GoodsEntry::GES_RATING);
3273 ge->last_speed = 0;
3274 TruncateCargo(cs, ge);
3275 waiting_changed = true;
3276 continue;
3277 }
3278
3279 bool skip = false;
3280 int rating = 0;
3281 uint waiting = ge->cargo.AvailableCount();
3282
3283 /* num_dests is at least 1 if there is any cargo as
3284 * INVALID_STATION is also a destination.
3285 */
3286 uint num_dests = (uint)ge->cargo.Packets()->MapSize();
3287
3288 /* Average amount of cargo per next hop, but prefer solitary stations
3289 * with only one or two next hops. They are allowed to have more
3290 * cargo waiting per next hop.
3291 * With manual cargo distribution waiting_avg = waiting / 2 as then
3292 * INVALID_STATION is the only destination.
3293 */
3294 uint waiting_avg = waiting / (num_dests + 1);
3295
3296 if (HasBit(cs->callback_mask, CBM_CARGO_STATION_RATING_CALC)) {
3297 /* Perform custom station rating. If it succeeds the speed, days in transit and
3298 * waiting cargo ratings must not be executed. */
3299
3300 /* NewGRFs expect last speed to be 0xFF when no vehicle has arrived yet. */
3301 uint last_speed = ge->HasVehicleEverTriedLoading() ? ge->last_speed : 0xFF;
3302
3303 uint32 var18 = min(ge->time_since_pickup, 0xFF) | (min(ge->max_waiting_cargo, 0xFFFF) << 8) | (min(last_speed, 0xFF) << 24);
3304 /* Convert to the 'old' vehicle types */
3305 uint32 var10 = (st->last_vehicle_type == VEH_INVALID) ? 0x0 : (st->last_vehicle_type + 0x10);
3306 uint16 callback = GetCargoCallback(CBID_CARGO_STATION_RATING_CALC, var10, var18, cs);
3307 if (callback != CALLBACK_FAILED) {
3308 skip = true;
3309 rating = GB(callback, 0, 14);
3310
3311 /* Simulate a 15 bit signed value */
3312 if (HasBit(callback, 14)) rating -= 0x4000;
3313 }
3314 }
3315
3316 if (!skip) {
3317 int b = ge->last_speed - 85;
3318 if (b >= 0) rating += b >> 2;
3319
3320 byte waittime = ge->time_since_pickup;
3321 if (st->last_vehicle_type == VEH_SHIP) waittime >>= 2;
3322 (waittime > 21) ||
3323 (rating += 25, waittime > 12) ||
3324 (rating += 25, waittime > 6) ||
3325 (rating += 45, waittime > 3) ||
3326 (rating += 35, true);
3327
3328 (rating -= 90, ge->max_waiting_cargo > 1500) ||
3329 (rating += 55, ge->max_waiting_cargo > 1000) ||
3330 (rating += 35, ge->max_waiting_cargo > 600) ||
3331 (rating += 10, ge->max_waiting_cargo > 300) ||
3332 (rating += 20, ge->max_waiting_cargo > 100) ||
3333 (rating += 10, true);
3334 }
3335
3336 if (Company::IsValidID(st->owner) && HasBit(st->town->statues, st->owner)) rating += 26;
3337
3338 byte age = ge->last_age;
3339 (age >= 3) ||
3340 (rating += 10, age >= 2) ||
3341 (rating += 10, age >= 1) ||
3342 (rating += 13, true);
3343
3344 {
3345 int or_ = ge->rating; // old rating
3346
3347 /* only modify rating in steps of -2, -1, 0, 1 or 2 */
3348 ge->rating = rating = or_ + Clamp(Clamp(rating, 0, 255) - or_, -2, 2);
3349
3350 /* if rating is <= 64 and more than 100 items waiting on average per destination,
3351 * remove some random amount of goods from the station */
3352 if (rating <= 64 && waiting_avg >= 100) {
3353 int dec = Random() & 0x1F;
3354 if (waiting_avg < 200) dec &= 7;
3355 waiting -= (dec + 1) * num_dests;
3356 waiting_changed = true;
3357 }
3358
3359 /* if rating is <= 127 and there are any items waiting, maybe remove some goods. */
3360 if (rating <= 127 && waiting != 0) {
3361 uint32 r = Random();
3362 if (rating <= (int)GB(r, 0, 7)) {
3363 /* Need to have int, otherwise it will just overflow etc. */
3364 waiting = max((int)waiting - (int)((GB(r, 8, 2) - 1) * num_dests), 0);
3365 waiting_changed = true;
3366 }
3367 }
3368
3369 /* At some point we really must cap the cargo. Previously this
3370 * was a strict 4095, but now we'll have a less strict, but
3371 * increasingly aggressive truncation of the amount of cargo. */
3372 static const uint WAITING_CARGO_THRESHOLD = 1 << 12;
3373 static const uint WAITING_CARGO_CUT_FACTOR = 1 << 6;
3374 static const uint MAX_WAITING_CARGO = 1 << 15;
3375
3376 if (waiting > WAITING_CARGO_THRESHOLD) {
3377 uint difference = waiting - WAITING_CARGO_THRESHOLD;
3378 waiting -= (difference / WAITING_CARGO_CUT_FACTOR);
3379
3380 waiting = min(waiting, MAX_WAITING_CARGO);
3381 waiting_changed = true;
3382 }
3383
3384 /* We can't truncate cargo that's already reserved for loading.
3385 * Thus StoredCount() here. */
3386 if (waiting_changed && waiting < ge->cargo.AvailableCount()) {
3387 /* Feed back the exact own waiting cargo at this station for the
3388 * next rating calculation. */
3389 ge->max_waiting_cargo = 0;
3390
3391 TruncateCargo(cs, ge, ge->cargo.AvailableCount() - waiting);
3392 } else {
3393 /* If the average number per next hop is low, be more forgiving. */
3394 ge->max_waiting_cargo = waiting_avg;
3395 }
3396 }
3397 }
3398 }
3399
3400 StationID index = st->index;
3401 if (waiting_changed) {
3402 SetWindowDirty(WC_STATION_VIEW, index); // update whole window
3403 } else {
3404 SetWindowWidgetDirty(WC_STATION_VIEW, index, WID_SV_ACCEPT_RATING_LIST); // update only ratings list
3405 }
3406 }
3407
3416 void RerouteCargo(Station *st, CargoID c, StationID avoid, StationID avoid2)
3417 {
3418 GoodsEntry &ge = st->goods[c];
3419
3420 /* Reroute cargo in station. */
3421 ge.cargo.Reroute(UINT_MAX, &ge.cargo, avoid, avoid2, &ge);
3422
3423 /* Reroute cargo staged to be transfered. */
3424 for (std::list<Vehicle *>::iterator it(st->loading_vehicles.begin()); it != st->loading_vehicles.end(); ++it) {
3425 for (Vehicle *v = *it; v != NULL; v = v->Next()) {
3426 if (v->cargo_type != c) continue;
3427 v->cargo.Reroute(UINT_MAX, &v->cargo, avoid, avoid2, &ge);
3428 }
3429 }
3430 }
3431
3440 void DeleteStaleLinks(Station *from)
3441 {
3442 for (CargoID c = 0; c < NUM_CARGO; ++c) {
3443 GoodsEntry &ge = from->goods[c];
3444 LinkGraph *lg = LinkGraph::GetIfValid(ge.link_graph);
3445 if (lg == NULL) continue;
3446 Node node = (*lg)[ge.node];
3447 for (EdgeIterator it(node.Begin()); it != node.End();) {
3448 Edge edge = it->second;
3449 Station *to = Station::Get((*lg)[it->first].Station());
3450 assert(to->goods[c].node == it->first);
3451 ++it; // Do that before removing the edge. Anything else may crash.
3452 assert(_date >= edge.LastUpdate());
3453 uint timeout = LinkGraph::MIN_TIMEOUT_DISTANCE + (DistanceManhattan(from->xy, to->xy) >> 3);
3454 if ((uint)(_date - edge.LastUpdate()) > timeout) {
3455 /* Have all vehicles refresh their next hops before deciding to
3456 * remove the node. */
3457 bool updated = false;
3458 OrderList *l;
3459 FOR_ALL_ORDER_LISTS(l) {
3460 bool found_from = false;
3461 bool found_to = false;
3462 for (Order *order = l->GetFirstOrder(); order != NULL; order = order->next) {
3463 if (!order->IsType(OT_GOTO_STATION) && !order->IsType(OT_IMPLICIT)) continue;
3464 if (order->GetDestination() == from->index) {
3465 found_from = true;
3466 if (found_to) break;
3467 } else if (order->GetDestination() == to->index) {
3468 found_to = true;
3469 if (found_from) break;
3470 }
3471 }
3472 if (!found_to || !found_from) continue;
3473 for (Vehicle *v = l->GetFirstSharedVehicle(); !updated && v != NULL; v = v->NextShared()) {
3474 /* There is potential for optimization here:
3475 * - Usually consists of the same order list are the same. It's probably better to
3476 * first check the first of each list, then the second of each list and so on.
3477 * - We could try to figure out if we've seen a consist with the same cargo on the
3478 * same list already and if the consist can actually carry the cargo we're looking
3479 * for. With conditional and refit orders this is not quite trivial, though. */
3480 LinkRefresher::Run(v, false); // Don't allow merging. Otherwise lg might get deleted.
3481 if (edge.LastUpdate() == _date) updated = true;
3482 }
3483 if (updated) break;
3484 }
3485 if (!updated) {
3486 /* If it's still considered dead remove it. */
3487 node.RemoveEdge(to->goods[c].node);
3488 ge.flows.DeleteFlows(to->index);
3489 RerouteCargo(from, c, to->index, from->index);
3490 }
3491 } else if (edge.LastUnrestrictedUpdate() != INVALID_DATE && (uint)(_date - edge.LastUnrestrictedUpdate()) > timeout) {
3492 edge.Restrict();
3493 ge.flows.RestrictFlows(to->index);
3494 RerouteCargo(from, c, to->index, from->index);
3495 } else if (edge.LastRestrictedUpdate() != INVALID_DATE && (uint)(_date - edge.LastRestrictedUpdate()) > timeout) {
3496 edge.Release();
3497 }
3498 }
3499 assert(_date >= lg->LastCompression());
3500 if ((uint)(_date - lg->LastCompression()) > LinkGraph::COMPRESSION_INTERVAL) {
3501 lg->Compress();
3502 }
3503 }
3504 }
3505
3515 void IncreaseStats(Station *st, CargoID cargo, StationID next_station_id, uint capacity, uint usage, EdgeUpdateMode mode)
3516 {
3517 GoodsEntry &ge1 = st->goods[cargo];
3518 Station *st2 = Station::Get(next_station_id);
3519 GoodsEntry &ge2 = st2->goods[cargo];
3520 LinkGraph *lg = NULL;
3521 if (ge1.link_graph == INVALID_LINK_GRAPH) {
3522 if (ge2.link_graph == INVALID_LINK_GRAPH) {
3523 if (LinkGraph::CanAllocateItem()) {
3524 lg = new LinkGraph(cargo);
3525 LinkGraphSchedule::instance.Queue(lg);
3526 ge2.link_graph = lg->index;
3527 ge2.node = lg->AddNode(st2);
3528 } else {
3529 DEBUG(misc, 0, "Can't allocate link graph");
3530 }
3531 } else {
3532 lg = LinkGraph::Get(ge2.link_graph);
3533 }
3534 if (lg) {
3535 ge1.link_graph = lg->index;
3536 ge1.node = lg->AddNode(st);
3537 }
3538 } else if (ge2.link_graph == INVALID_LINK_GRAPH) {
3539 lg = LinkGraph::Get(ge1.link_graph);
3540 ge2.link_graph = lg->index;
3541 ge2.node = lg->AddNode(st2);
3542 } else {
3543 lg = LinkGraph::Get(ge1.link_graph);
3544 if (ge1.link_graph != ge2.link_graph) {
3545 LinkGraph *lg2 = LinkGraph::Get(ge2.link_graph);
3546 if (lg->Size() < lg2->Size()) {
3547 LinkGraphSchedule::instance.Unqueue(lg);
3548 lg2->Merge(lg); // Updates GoodsEntries of lg
3549 lg = lg2;
3550 } else {
3551 LinkGraphSchedule::instance.Unqueue(lg2);
3552 lg->Merge(lg2); // Updates GoodsEntries of lg2
3553 }
3554 }
3555 }
3556 if (lg != NULL) {
3557 (*lg)[ge1.node].UpdateEdge(ge2.node, capacity, usage, mode);
3558 }
3559 }
3560
3567 void IncreaseStats(Station *st, const Vehicle *front, StationID next_station_id)
3568 {
3569 for (const Vehicle *v = front; v != NULL; v = v->Next()) {
3570 if (v->refit_cap > 0) {
3571 /* The cargo count can indeed be higher than the refit_cap if
3572 * wagons have been auto-replaced and subsequently auto-
3573 * refitted to a higher capacity. The cargo gets redistributed
3574 * among the wagons in that case.
3575 * As usage is not such an important figure anyway we just
3576 * ignore the additional cargo then.*/
3577 IncreaseStats(st, v->cargo_type, next_station_id, v->refit_cap,
3578 min(v->refit_cap, v->cargo.StoredCount()), EUM_INCREASE);
3579 }
3580 }
3581 }
3582
3583 /* called for every station each tick */
3584 static void StationHandleSmallTick(BaseStation *st)
3585 {
3586 if ((st->facilities & FACIL_WAYPOINT) != 0 || !st->IsInUse()) return;
3587
3588 byte b = st->delete_ctr + 1;
3589 if (b >= STATION_RATING_TICKS) b = 0;
3590 st->delete_ctr = b;
3591
3592 if (b == 0) UpdateStationRating(Station::From(st));
3593 }
3594
3595 void OnTick_Station()
3596 {
3597 if (_game_mode == GM_EDITOR) return;
3598
3599 BaseStation *st;
3600 FOR_ALL_BASE_STATIONS(st) {
3601 StationHandleSmallTick(st);
3602
3603 /* Clean up the link graph about once a week. */
3604 if (Station::IsExpected(st) && (_tick_counter + st->index) % STATION_LINKGRAPH_TICKS == 0) {
3605 DeleteStaleLinks(Station::From(st));
3606 };
3607
3608 /* Run STATION_ACCEPTANCE_TICKS = 250 tick interval trigger for station animation.
3609 * Station index is included so that triggers are not all done
3610 * at the same time. */
3611 if ((_tick_counter + st->index) % STATION_ACCEPTANCE_TICKS == 0) {
3612 /* Stop processing this station if it was deleted */
3613 if (!StationHandleBigTick(st)) continue;
3614 TriggerStationAnimation(st, st->xy, SAT_250_TICKS);
3615 if (Station::IsExpected(st)) AirportAnimationTrigger(Station::From(st), AAT_STATION_250_TICKS);
3616 }
3617 }
3618 }
3619
3621 void StationMonthlyLoop()
3622 {
3623 Station *st;
3624
3625 FOR_ALL_STATIONS(st) {
3626 for (CargoID i = 0; i < NUM_CARGO; i++) {
3627 GoodsEntry *ge = &st->goods[i];
3628 SB(ge->status, GoodsEntry::GES_LAST_MONTH, 1, GB(ge->status, GoodsEntry::GES_CURRENT_MONTH, 1));
3629 ClrBit(ge->status, GoodsEntry::GES_CURRENT_MONTH);
3630 }
3631 }
3632 }
3633
3634
3635 void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint radius)
3636 {
3637 Station *st;
3638
3639 FOR_ALL_STATIONS(st) {
3640 if (st->owner == owner &&
3641 DistanceManhattan(tile, st->xy) <= radius) {
3642 for (CargoID i = 0; i < NUM_CARGO; i++) {
3643 GoodsEntry *ge = &st->goods[i];
3644
3645 if (ge->status != 0) {
3646 ge->rating = Clamp(ge->rating + amount, 0, 255);
3647 }
3648 }
3649 }
3650 }
3651 }
3652
3653 static uint UpdateStationWaiting(Station *st, CargoID type, uint amount, SourceType source_type, SourceID source_id)
3654 {
3655 /* We can't allocate a CargoPacket? Then don't do anything
3656 * at all; i.e. just discard the incoming cargo. */
3657 if (!CargoPacket::CanAllocateItem()) return 0;
3658
3659 GoodsEntry &ge = st->goods[type];
3660 amount += ge.amount_fract;
3661 ge.amount_fract = GB(amount, 0, 8);
3662
3663 amount >>= 8;
3664 /* No new "real" cargo item yet. */
3665 if (amount == 0) return 0;
3666
3667 StationID next = ge.GetVia(st->index);
3668 ge.cargo.Append(new CargoPacket(st->index, st->xy, amount, source_type, source_id), next);
3669 LinkGraph *lg = NULL;
3670 if (ge.link_graph == INVALID_LINK_GRAPH) {
3671 if (LinkGraph::CanAllocateItem()) {
3672 lg = new LinkGraph(type);
3673 LinkGraphSchedule::instance.Queue(lg);
3674 ge.link_graph = lg->index;
3675 ge.node = lg->AddNode(st);
3676 } else {
3677 DEBUG(misc, 0, "Can't allocate link graph");
3678 }
3679 } else {
3680 lg = LinkGraph::Get(ge.link_graph);
3681 }
3682 if (lg != NULL) (*lg)[ge.node].UpdateSupply(amount);
3683
3684 if (!ge.HasRating()) {
3685 InvalidateWindowData(WC_STATION_LIST, st->index);
3686 SetBit(ge.status, GoodsEntry::GES_RATING);
3687 }
3688
3689 TriggerStationRandomisation(st, st->xy, SRT_NEW_CARGO, type);
3690 TriggerStationAnimation(st, st->xy, SAT_NEW_CARGO, type);
3691 AirportAnimationTrigger(st, AAT_STATION_NEW_CARGO, type);
3692
3693 SetWindowDirty(WC_STATION_VIEW, st->index);
3694 st->MarkTilesDirty(true);
3695 return amount;
3696 }
3697
3698 static bool IsUniqueStationName(const char *name)
3699 {
3700 const Station *st;
3701
3702 FOR_ALL_STATIONS(st) {
3703 if (st->name != NULL && strcmp(st->name, name) == 0) return false;
3704 }
3705
3706 return true;
3707 }
3708
3718 CommandCost CmdRenameStation(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
3719 {
3720 Station *st = Station::GetIfValid(p1);
3721 if (st == NULL) return CMD_ERROR;
3722
3723 CommandCost ret = CheckOwnership(st->owner);
3724 if (ret.Failed()) return ret;
3725
3726 bool reset = StrEmpty(text);
3727
3728 if (!reset) {
3729 if (Utf8StringLength(text) >= MAX_LENGTH_STATION_NAME_CHARS) return CMD_ERROR;
3730 if (!IsUniqueStationName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
3731 }
3732
3733 if (flags & DC_EXEC) {
3734 free(st->name);
3735 st->name = reset ? NULL : stredup(text);
3736
3737 st->UpdateVirtCoord();
3738 InvalidateWindowData(WC_STATION_LIST, st->owner, 1);
3739 }
3740
3741 return CommandCost();
3742 }
3743
3750 void FindStationsAroundTiles(const TileArea &location, StationList *stations)
3751 {
3752 /* area to search = producer plus station catchment radius */
3753 uint max_rad = (_settings_game.station.modified_catchment ? MAX_CATCHMENT : CA_UNMODIFIED);
3754
3755 uint x = TileX(location.tile);
3756 uint y = TileY(location.tile);
3757
3758 uint min_x = (x > max_rad) ? x - max_rad : 0;
3759 uint max_x = x + location.w + max_rad;
3760 uint min_y = (y > max_rad) ? y - max_rad : 0;
3761 uint max_y = y + location.h + max_rad;
3762
3763 if (min_x == 0 && _settings_game.construction.freeform_edges) min_x = 1;
3764 if (min_y == 0 && _settings_game.construction.freeform_edges) min_y = 1;
3765 if (max_x >= MapSizeX()) max_x = MapSizeX() - 1;
3766 if (max_y >= MapSizeY()) max_y = MapSizeY() - 1;
3767
3768 for (uint cy = min_y; cy < max_y; cy++) {
3769 for (uint cx = min_x; cx < max_x; cx++) {
3770 TileIndex cur_tile = TileXY(cx, cy);
3771 if (!IsTileType(cur_tile, MP_STATION)) continue;
3772
3773 Station *st = Station::GetByTile(cur_tile);
3774 /* st can be NULL in case of waypoints */
3775 if (st == NULL) continue;
3776
3777 if (_settings_game.station.modified_catchment) {
3778 int rad = st->GetCatchmentRadius();
3779 int rad_x = cx - x;
3780 int rad_y = cy - y;
3781
3782 if (rad_x < -rad || rad_x >= rad + location.w) continue;
3783 if (rad_y < -rad || rad_y >= rad + location.h) continue;
3784 }
3785
3786 /* Insert the station in the set. This will fail if it has
3787 * already been added.
3788 */
3789 stations->Include(st);
3790 }
3791 }
3792 }
3793
3798 const StationList *StationFinder::GetStations()
3799 {
3800 if (this->tile != INVALID_TILE) {
3801 FindStationsAroundTiles(*this, &this->stations);
3802 this->tile = INVALID_TILE;
3803 }
3804 return &this->stations;
3805 }
3806
3807 uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations)
3808 {
3809 /* Return if nothing to do. Also the rounding below fails for 0. */
3810 if (amount == 0) return 0;
3811
3812 Station *st1 = NULL; // Station with best rating
3813 Station *st2 = NULL; // Second best station
3814 uint best_rating1 = 0; // rating of st1
3815 uint best_rating2 = 0; // rating of st2
3816
3817 for (Station * const *st_iter = all_stations->Begin(); st_iter != all_stations->End(); ++st_iter) {
3818 Station *st = *st_iter;
3819
3820 /* Is the station reserved exclusively for somebody else? */
3821 if (st->town->exclusive_counter > 0 && st->town->exclusivity != st->owner) continue;
3822
3823 if (st->goods[type].rating == 0) continue; // Lowest possible rating, better not to give cargo anymore
3824
3825 if (_settings_game.order.selectgoods && !st->goods[type].HasVehicleEverTriedLoading()) continue; // Selectively servicing stations, and not this one
3826
3827 if (IsCargoInClass(type, CC_PASSENGERS)) {
3828 if (st->facilities == FACIL_TRUCK_STOP) continue; // passengers are never served by just a truck stop
3829 } else {
3830 if (st->facilities == FACIL_BUS_STOP) continue; // non-passengers are never served by just a bus stop
3831 }
3832
3833 /* This station can be used, add it to st1/st2 */
3834 if (st1 == NULL || st->goods[type].rating >= best_rating1) {
3835 st2 = st1; best_rating2 = best_rating1; st1 = st; best_rating1 = st->goods[type].rating;
3836 } else if (st2 == NULL || st->goods[type].rating >= best_rating2) {
3837 st2 = st; best_rating2 = st->goods[type].rating;
3838 }
3839 }
3840
3841 /* no stations around at all? */
3842 if (st1 == NULL) return 0;
3843
3844 /* From now we'll calculate with fractal cargo amounts.
3845 * First determine how much cargo we really have. */
3846 amount *= best_rating1 + 1;
3847
3848 if (st2 == NULL) {
3849 /* only one station around */
3850 return UpdateStationWaiting(st1, type, amount, source_type, source_id);
3851 }
3852
3853 /* several stations around, the best two (highest rating) are in st1 and st2 */
3854 assert(st1 != NULL);
3855 assert(st2 != NULL);
3856 assert(best_rating1 != 0 || best_rating2 != 0);
3857
3858 /* Then determine the amount the worst station gets. We do it this way as the
3859 * best should get a bonus, which in this case is the rounding difference from
3860 * this calculation. In reality that will mean the bonus will be pretty low.
3861 * Nevertheless, the best station should always get the most cargo regardless
3862 * of rounding issues. */
3863 uint worst_cargo = amount * best_rating2 / (best_rating1 + best_rating2);
3864 assert(worst_cargo <= (amount - worst_cargo));
3865
3866 /* And then send the cargo to the stations! */
3867 uint moved = UpdateStationWaiting(st1, type, amount - worst_cargo, source_type, source_id);
3868 /* These two UpdateStationWaiting's can't be in the statement as then the order
3869 * of execution would be undefined and that could cause desyncs with callbacks. */
3870 return moved + UpdateStationWaiting(st2, type, worst_cargo, source_type, source_id);
3871 }
3872
3873 void BuildOilRig(TileIndex tile)
3874 {
3875 if (!Station::CanAllocateItem()) {
3876 DEBUG(misc, 0, "Can't allocate station for oilrig at 0x%X, reverting to oilrig only", tile);
3877 return;
3878 }
3879
3880 Station *st = new Station(tile);
3881 st->town = ClosestTownFromTile(tile, UINT_MAX);
3882
3883 st->string_id = GenerateStationName(st, tile, STATIONNAMING_OILRIG);
3884
3885 assert(IsTileType(tile, MP_INDUSTRY));
3886 DeleteAnimatedTile(tile);
3887 MakeOilrig(tile, st->index, GetWaterClass(tile));
3888
3889 st->owner = OWNER_NONE;
3890 st->airport.type = AT_OILRIG;
3891 st->airport.Add(tile);
3892 st->dock_tile = tile;
3893 st->facilities = FACIL_AIRPORT | FACIL_DOCK;
3894 st->build_date = _date;
3895
3896 st->rect.BeforeAddTile(tile, StationRect::ADD_FORCE);
3897
3898 st->UpdateVirtCoord();
3899 UpdateStationAcceptance(st, false);
3900 st->RecomputeIndustriesNear();
3901 }
3902
3903 void DeleteOilRig(TileIndex tile)
3904 {
3905 Station *st = Station::GetByTile(tile);
3906
3907 MakeWaterKeepingClass(tile, OWNER_NONE);
3908
3909 st->dock_tile = INVALID_TILE;
3910 st->airport.Clear();
3911 st->facilities &= ~(FACIL_AIRPORT | FACIL_DOCK);
3912 st->airport.flags = 0;
3913
3914 st->rect.AfterRemoveTile(st, tile);
3915
3916 st->UpdateVirtCoord();
3917 st->RecomputeIndustriesNear();
3918 if (!st->IsInUse()) delete st;
3919 }
3920
3921 static void ChangeTileOwner_Station(TileIndex tile, Owner old_owner, Owner new_owner)
3922 {
3923 if (IsRoadStopTile(tile)) {
3924 for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
3925 /* Update all roadtypes, no matter if they are present */
3926 if (GetRoadOwner(tile, rt) == old_owner) {
3927 if (HasTileRoadType(tile, rt)) {
3928 /* A drive-through road-stop has always two road bits. No need to dirty windows here, we'll redraw the whole screen anyway. */
3929 Company::Get(old_owner)->infrastructure.road[rt] -= 2;
3930 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.road[rt] += 2;
3931 }
3932 SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
3933 }
3934 }
3935 }
3936
3937 if (!IsTileOwner(tile, old_owner)) return;
3938
3939 if (new_owner != INVALID_OWNER) {
3940 /* Update company infrastructure counts. Only do it here
3941 * if the new owner is valid as otherwise the clear
3942 * command will do it for us. No need to dirty windows
3943 * here, we'll redraw the whole screen anyway.*/
3944 Company *old_company = Company::Get(old_owner);
3945 Company *new_company = Company::Get(new_owner);
3946
3947 /* Update counts for underlying infrastructure. */
3948 switch (GetStationType(tile)) {
3949 case STATION_RAIL:
3950 case STATION_WAYPOINT:
3951 if (!IsStationTileBlocked(tile)) {
3952 old_company->infrastructure.rail[GetRailType(tile)]--;
3953 new_company->infrastructure.rail[GetRailType(tile)]++;
3954 }
3955 break;
3956
3957 case STATION_BUS:
3958 case STATION_TRUCK:
3959 /* Road stops were already handled above. */
3960 break;
3961
3962 case STATION_BUOY:
3963 case STATION_DOCK:
3964 if (GetWaterClass(tile) == WATER_CLASS_CANAL) {
3965 old_company->infrastructure.water--;
3966 new_company->infrastructure.water++;
3967 }
3968 break;
3969
3970 default:
3971 break;
3972 }
3973
3974 /* Update station tile count. */
3975 if (!IsBuoy(tile) && !IsAirport(tile)) {
3976 old_company->infrastructure.station--;
3977 new_company->infrastructure.station++;
3978 }
3979
3980 /* for buoys, owner of tile is owner of water, st->owner == OWNER_NONE */
3981 SetTileOwner(tile, new_owner);
3982 InvalidateWindowClassesData(WC_STATION_LIST, 0);
3983 } else {
3984 if (IsDriveThroughStopTile(tile)) {
3985 /* Remove the drive-through road stop */
3986 DoCommand(tile, 1 | 1 << 8, (GetStationType(tile) == STATION_TRUCK) ? ROADSTOP_TRUCK : ROADSTOP_BUS, DC_EXEC | DC_BANKRUPT, CMD_REMOVE_ROAD_STOP);
3987 assert(IsTileType(tile, MP_ROAD));
3988 /* Change owner of tile and all roadtypes */
3989 ChangeTileOwner(tile, old_owner, new_owner);
3990 } else {
3991 DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
3992 /* Set tile owner of water under (now removed) buoy and dock to OWNER_NONE.
3993 * Update owner of buoy if it was not removed (was in orders).
3994 * Do not update when owned by OWNER_WATER (sea and rivers). */
3995 if ((IsTileType(tile, MP_WATER) || IsBuoyTile(tile)) && IsTileOwner(tile, old_owner)) SetTileOwner(tile, OWNER_NONE);
3996 }
3997 }
3998 }
3999
4008 static bool CanRemoveRoadWithStop(TileIndex tile, DoCommandFlag flags)
4009 {
4010 /* Yeah... water can always remove stops, right? */
4011 if (_current_company == OWNER_WATER) return true;
4012
4013 RoadTypes rts = GetRoadTypes(tile);
4014 if (HasBit(rts, ROADTYPE_TRAM)) {
4015 Owner tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
4016 if (tram_owner != OWNER_NONE && CheckOwnership(tram_owner).Failed()) return false;
4017 }
4018 if (HasBit(rts, ROADTYPE_ROAD)) {
4019 Owner road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
4020 if (road_owner != OWNER_TOWN) {
4021 if (road_owner != OWNER_NONE && CheckOwnership(road_owner).Failed()) return false;
4022 } else {
4023 if (CheckAllowRemoveRoad(tile, GetAnyRoadBits(tile, ROADTYPE_ROAD), OWNER_TOWN, ROADTYPE_ROAD, flags).Failed()) return false;
4024 }
4025 }
4026
4027 return true;
4028 }
4029
4036 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags)
4037 {
4038 if (flags & DC_AUTO) {
4039 switch (GetStationType(tile)) {
4040 default: break;
4041 case STATION_RAIL: return_cmd_error(STR_ERROR_MUST_DEMOLISH_RAILROAD);
4042 case STATION_WAYPOINT: return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
4043 case STATION_AIRPORT: return_cmd_error(STR_ERROR_MUST_DEMOLISH_AIRPORT_FIRST);
4044 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);
4045 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);
4046 case STATION_BUOY: return_cmd_error(STR_ERROR_BUOY_IN_THE_WAY);
4047 case STATION_DOCK: return_cmd_error(STR_ERROR_MUST_DEMOLISH_DOCK_FIRST);
4048 case STATION_OILRIG:
4049 SetDParam(1, STR_INDUSTRY_NAME_OIL_RIG);
4050 return_cmd_error(STR_ERROR_GENERIC_OBJECT_IN_THE_WAY);
4051 }
4052 }
4053
4054 switch (GetStationType(tile)) {
4055 case STATION_RAIL: return RemoveRailStation(tile, flags);
4056 case STATION_WAYPOINT: return RemoveRailWaypoint(tile, flags);
4057 case STATION_AIRPORT: return RemoveAirport(tile, flags);
4058 case STATION_TRUCK:
4059 if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
4060 return_cmd_error(STR_ERROR_MUST_DEMOLISH_TRUCK_STATION_FIRST);
4061 }
4062 return RemoveRoadStop(tile, flags);
4063 case STATION_BUS:
4064 if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
4065 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST);
4066 }
4067 return RemoveRoadStop(tile, flags);
4068 case STATION_BUOY: return RemoveBuoy(tile, flags);
4069 case STATION_DOCK: return RemoveDock(tile, flags);
4070 default: break;
4071 }
4072
4073 return CMD_ERROR;
4074 }
4075
4076 static CommandCost TerraformTile_Station(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
4077 {
4078 if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
4079 /* TODO: If you implement newgrf callback 149 'land slope check', you have to decide what to do with it here.
4080 * TTDP does not call it.
4081 */
4082 if (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new)) {
4083 switch (GetStationType(tile)) {
4084 case STATION_WAYPOINT:
4085 case STATION_RAIL: {
4086 DiagDirection direction = AxisToDiagDir(GetRailStationAxis(tile));
4087 if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
4088 if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
4089 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
4090 }
4091
4092 case STATION_AIRPORT:
4093 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
4094
4095 case STATION_TRUCK:
4096 case STATION_BUS: {
4097 DiagDirection direction = GetRoadStopDir(tile);
4098 if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
4099 if (IsDriveThroughStopTile(tile)) {
4100 if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
4101 }
4102 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
4103 }
4104
4105 default: break;
4106 }
4107 }
4108 }
4109 return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
4110 }
4111
4117 uint FlowStat::GetShare(StationID st) const
4118 {
4119 uint32 prev = 0;
4120 for (SharesMap::const_iterator it = this->shares.begin(); it != this->shares.end(); ++it) {
4121 if (it->second == st) {
4122 return it->first - prev;
4123 } else {
4124 prev = it->first;
4125 }
4126 }
4127 return 0;
4128 }
4129
4136 StationID FlowStat::GetVia(StationID excluded, StationID excluded2) const
4137 {
4138 if (this->unrestricted == 0) return INVALID_STATION;
4139 assert(!this->shares.empty());
4140 SharesMap::const_iterator it = this->shares.upper_bound(RandomRange(this->unrestricted));
4141 assert(it != this->shares.end() && it->first <= this->unrestricted);
4142 if (it->second != excluded && it->second != excluded2) return it->second;
4143
4144 /* We've hit one of the excluded stations.
4145 * Draw another share, from outside its range. */
4146
4147 uint end = it->first;
4148 uint begin = (it == this->shares.begin() ? 0 : (--it)->first);
4149 uint interval = end - begin;
4150 if (interval >= this->unrestricted) return INVALID_STATION; // Only one station in the map.
4151 uint new_max = this->unrestricted - interval;
4152 uint rand = RandomRange(new_max);
4153 SharesMap::const_iterator it2 = (rand < begin) ? this->shares.upper_bound(rand) :
4154 this->shares.upper_bound(rand + interval);
4155 assert(it2 != this->shares.end() && it2->first <= this->unrestricted);
4156 if (it2->second != excluded && it2->second != excluded2) return it2->second;
4157
4158 /* We've hit the second excluded station.
4159 * Same as before, only a bit more complicated. */
4160
4161 uint end2 = it2->first;
4162 uint begin2 = (it2 == this->shares.begin() ? 0 : (--it2)->first);
4163 uint interval2 = end2 - begin2;
4164 if (interval2 >= new_max) return INVALID_STATION; // Only the two excluded stations in the map.
4165 new_max -= interval2;
4166 if (begin > begin2) {
4167 Swap(begin, begin2);
4168 Swap(end, end2);
4169 Swap(interval, interval2);
4170 }
4171 rand = RandomRange(new_max);
4172 SharesMap::const_iterator it3 = this->shares.upper_bound(this->unrestricted);
4173 if (rand < begin) {
4174 it3 = this->shares.upper_bound(rand);
4175 } else if (rand < begin2 - interval) {
4176 it3 = this->shares.upper_bound(rand + interval);
4177 } else {
4178 it3 = this->shares.upper_bound(rand + interval + interval2);
4179 }
4180 assert(it3 != this->shares.end() && it3->first <= this->unrestricted);
4181 return it3->second;
4182 }
4183
4189 void FlowStat::Invalidate()
4190 {
4191 assert(!this->shares.empty());
4192 SharesMap new_shares;
4193 uint i = 0;
4194 for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4195 new_shares[++i] = it->second;
4196 if (it->first == this->unrestricted) this->unrestricted = i;
4197 }
4198 this->shares.swap(new_shares);
4199 assert(!this->shares.empty() && this->unrestricted <= (--this->shares.end())->first);
4200 }
4201
4208 void FlowStat::ChangeShare(StationID st, int flow)
4209 {
4210 /* We assert only before changing as afterwards the shares can actually
4211 * be empty. In that case the whole flow stat must be deleted then. */
4212 assert(!this->shares.empty());
4213
4214 uint removed_shares = 0;
4215 uint added_shares = 0;
4216 uint last_share = 0;
4217 SharesMap new_shares;
4218 for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4219 if (it->second == st) {
4220 if (flow < 0) {
4221 uint share = it->first - last_share;
4222 if (flow == INT_MIN || (uint)(-flow) >= share) {
4223 removed_shares += share;
4224 if (it->first <= this->unrestricted) this->unrestricted -= share;
4225 if (flow != INT_MIN) flow += share;
4226 last_share = it->first;
4227 continue; // remove the whole share
4228 }
4229 removed_shares += (uint)(-flow);
4230 } else {
4231 added_shares += (uint)(flow);
4232 }
4233 if (it->first <= this->unrestricted) this->unrestricted += flow;
4234
4235 /* If we don't continue above the whole flow has been added or
4236 * removed. */
4237 flow = 0;
4238 }
4239 new_shares[it->first + added_shares - removed_shares] = it->second;
4240 last_share = it->first;
4241 }
4242 if (flow > 0) {
4243 new_shares[last_share + (uint)flow] = st;
4244 if (this->unrestricted < last_share) {
4245 this->ReleaseShare(st);
4246 } else {
4247 this->unrestricted += flow;
4248 }
4249 }
4250 this->shares.swap(new_shares);
4251 }
4252
4258 void FlowStat::RestrictShare(StationID st)
4259 {
4260 assert(!this->shares.empty());
4261 uint flow = 0;
4262 uint last_share = 0;
4263 SharesMap new_shares;
4264 for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4265 if (flow == 0) {
4266 if (it->first > this->unrestricted) return; // Not present or already restricted.
4267 if (it->second == st) {
4268 flow = it->first - last_share;
4269 this->unrestricted -= flow;
4270 } else {
4271 new_shares[it->first] = it->second;
4272 }
4273 } else {
4274 new_shares[it->first - flow] = it->second;
4275 }
4276 last_share = it->first;
4277 }
4278 if (flow == 0) return;
4279 new_shares[last_share + flow] = st;
4280 this->shares.swap(new_shares);
4281 assert(!this->shares.empty());
4282 }
4283
4289 void FlowStat::ReleaseShare(StationID st)
4290 {
4291 assert(!this->shares.empty());
4292 uint flow = 0;
4293 uint next_share = 0;
4294 bool found = false;
4295 for (SharesMap::reverse_iterator it(this->shares.rbegin()); it != this->shares.rend(); ++it) {
4296 if (it->first < this->unrestricted) return; // Note: not <= as the share may hit the limit.
4297 if (found) {
4298 flow = next_share - it->first;
4299 this->unrestricted += flow;
4300 break;
4301 } else {
4302 if (it->first == this->unrestricted) return; // !found -> Limit not hit.
4303 if (it->second == st) found = true;
4304 }
4305 next_share = it->first;
4306 }
4307 if (flow == 0) return;
4308 SharesMap new_shares;
4309 new_shares[flow] = st;
4310 for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4311 if (it->second != st) {
4312 new_shares[flow + it->first] = it->second;
4313 } else {
4314 flow = 0;
4315 }
4316 }
4317 this->shares.swap(new_shares);
4318 assert(!this->shares.empty());
4319 }
4320
4326 void FlowStat::ScaleToMonthly(uint runtime)
4327 {
4328 assert(runtime > 0);
4329 SharesMap new_shares;
4330 uint share = 0;
4331 for (SharesMap::iterator i = this->shares.begin(); i != this->shares.end(); ++i) {
4332 share = max(share + 1, i->first * 30 / runtime);
4333 new_shares[share] = i->second;
4334 if (this->unrestricted == i->first) this->unrestricted = share;
4335 }
4336 this->shares.swap(new_shares);
4337 }
4338
4345 void FlowStatMap::AddFlow(StationID origin, StationID via, uint flow)
4346 {
4347 FlowStatMap::iterator origin_it = this->find(origin);
4348 if (origin_it == this->end()) {
4349 this->insert(std::make_pair(origin, FlowStat(via, flow)));
4350 } else {
4351 origin_it->second.ChangeShare(via, flow);
4352 assert(!origin_it->second.GetShares()->empty());
4353 }
4354 }
4355
4364 void FlowStatMap::PassOnFlow(StationID origin, StationID via, uint flow)
4365 {
4366 FlowStatMap::iterator prev_it = this->find(origin);
4367 if (prev_it == this->end()) {
4368 FlowStat fs(via, flow);
4369 fs.AppendShare(INVALID_STATION, flow);
4370 this->insert(std::make_pair(origin, fs));
4371 } else {
4372 prev_it->second.ChangeShare(via, flow);
4373 prev_it->second.ChangeShare(INVALID_STATION, flow);
4374 assert(!prev_it->second.GetShares()->empty());
4375 }
4376 }
4377
4382 void FlowStatMap::FinalizeLocalConsumption(StationID self)
4383 {
4384 for (FlowStatMap::iterator i = this->begin(); i != this->end(); ++i) {
4385 FlowStat &fs = i->second;
4386 uint local = fs.GetShare(INVALID_STATION);
4387 if (local > INT_MAX) { // make sure it fits in an int
4388 fs.ChangeShare(self, -INT_MAX);
4389 fs.ChangeShare(INVALID_STATION, -INT_MAX);
4390 local -= INT_MAX;
4391 }
4392 fs.ChangeShare(self, -(int)local);
4393 fs.ChangeShare(INVALID_STATION, -(int)local);
4394
4395 /* If the local share is used up there must be a share for some
4396 * remote station. */
4397 assert(!fs.GetShares()->empty());
4398 }
4399 }
4400
4407 StationIDStack FlowStatMap::DeleteFlows(StationID via)
4408 {
4409 StationIDStack ret;
4410 for (FlowStatMap::iterator f_it = this->begin(); f_it != this->end();) {
4411 FlowStat &s_flows = f_it->second;
4412 s_flows.ChangeShare(via, INT_MIN);
4413 if (s_flows.GetShares()->empty()) {
4414 ret.Push(f_it->first);
4415 this->erase(f_it++);
4416 } else {
4417 ++f_it;
4418 }
4419 }
4420 return ret;
4421 }
4422
4427 void FlowStatMap::RestrictFlows(StationID via)
4428 {
4429 for (FlowStatMap::iterator it = this->begin(); it != this->end(); ++it) {
4430 it->second.RestrictShare(via);
4431 }
4432 }
4433
4438 void FlowStatMap::ReleaseFlows(StationID via)
4439 {
4440 for (FlowStatMap::iterator it = this->begin(); it != this->end(); ++it) {
4441 it->second.ReleaseShare(via);
4442 }
4443 }
4444
4449 uint FlowStatMap::GetFlow() const
4450 {
4451 uint ret = 0;
4452 for (FlowStatMap::const_iterator i = this->begin(); i != this->end(); ++i) {
4453 ret += (--(i->second.GetShares()->end()))->first;
4454 }
4455 return ret;
4456 }
4457
4463 uint FlowStatMap::GetFlowVia(StationID via) const
4464 {
4465 uint ret = 0;
4466 for (FlowStatMap::const_iterator i = this->begin(); i != this->end(); ++i) {
4467 ret += i->second.GetShare(via);
4468 }
4469 return ret;
4470 }
4471
4477 uint FlowStatMap::GetFlowFrom(StationID from) const
4478 {
4479 FlowStatMap::const_iterator i = this->find(from);
4480 if (i == this->end()) return 0;
4481 return (--(i->second.GetShares()->end()))->first;
4482 }
4483
4490 uint FlowStatMap::GetFlowFromVia(StationID from, StationID via) const
4491 {
4492 FlowStatMap::const_iterator i = this->find(from);
4493 if (i == this->end()) return 0;
4494 return i->second.GetShare(via);
4495 }
4496
4497 extern const TileTypeProcs _tile_type_station_procs = {
4498 DrawTile_Station, // draw_tile_proc
4499 GetSlopePixelZ_Station, // get_slope_z_proc
4500 ClearTile_Station, // clear_tile_proc
4501 NULL, // add_accepted_cargo_proc
4502 GetTileDesc_Station, // get_tile_desc_proc
4503 GetTileTrackStatus_Station, // get_tile_track_status_proc
4504 ClickTile_Station, // click_tile_proc
4505 AnimateTile_Station, // animate_tile_proc
4506 TileLoop_Station, // tile_loop_proc
4507 ChangeTileOwner_Station, // change_tile_owner_proc
4508 NULL, // add_produced_cargo_proc
4509 VehicleEnter_Station, // vehicle_enter_tile_proc
4510 GetFoundation_Station, // get_foundation_proc
4511 TerraformTile_Station, // terraform_tile_proc
4512 };