OpenTTD: src/station_cmd.cpp Source File

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station_cmd.cpp
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1 /* $Id: station_cmd.cpp 27893 2017-08-13 18:38:42Z frosch $ */
2
3 /*
4 * This file is part of OpenTTD.
5 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
6 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
8 */
9
12 #include "stdafx.h"
13 #include "aircraft.h"
14 #include "bridge_map.h"
15 #include "cmd_helper.h"
16 #include "viewport_func.h"
17 #include "command_func.h"
18 #include "town.h"
19 #include "news_func.h"
20 #include "train.h"
21 #include "ship.h"
22 #include "roadveh.h"
23 #include "industry.h"
24 #include "newgrf_cargo.h"
25 #include "newgrf_debug.h"
26 #include "newgrf_station.h"
27 #include "newgrf_canal.h" /* For the buoy */
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 (Company::IsValidID(tram_owner) &&
967 (!_settings_game.construction.road_stop_on_competitor_road ||
968 /* Disallow breaking end-of-line of someone else
969 * so trams can still reverse on this tile. */
970 HasExactlyOneBit(GetRoadBits(cur_tile, ROADTYPE_TRAM)))) {
971 CommandCost ret = CheckOwnership(tram_owner);
972 if (ret.Failed()) return ret;
973 }
974 num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_TRAM));
975 }
976
977 /* Take into account existing roadbits. */
978 rts |= cur_rts;
979 } else {
980 ret = DoCommand(cur_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
981 if (ret.Failed()) return ret;
982 cost.AddCost(ret);
983 }
984
985 uint roadbits_to_build = CountBits(rts) * 2 - num_roadbits;
986 cost.AddCost(_price[PR_BUILD_ROAD] * roadbits_to_build);
987 }
988 }
989
990 return cost;
991 }
992
1000 CommandCost CanExpandRailStation(const BaseStation *st, TileArea &new_ta, Axis axis)
1001 {
1002 TileArea cur_ta = st->train_station;
1003
1004 /* determine new size of train station region.. */
1005 int x = min(TileX(cur_ta.tile), TileX(new_ta.tile));
1006 int y = min(TileY(cur_ta.tile), TileY(new_ta.tile));
1007 new_ta.w = max(TileX(cur_ta.tile) + cur_ta.w, TileX(new_ta.tile) + new_ta.w) - x;
1008 new_ta.h = max(TileY(cur_ta.tile) + cur_ta.h, TileY(new_ta.tile) + new_ta.h) - y;
1009 new_ta.tile = TileXY(x, y);
1010
1011 /* make sure the final size is not too big. */
1012 if (new_ta.w > _settings_game.station.station_spread || new_ta.h > _settings_game.station.station_spread) {
1013 return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
1014 }
1015
1016 return CommandCost();
1017 }
1018
1019 static inline byte *CreateSingle(byte *layout, int n)
1020 {
1021 int i = n;
1022 do *layout++ = 0; while (--i);
1023 layout[((n - 1) >> 1) - n] = 2;
1024 return layout;
1025 }
1026
1027 static inline byte *CreateMulti(byte *layout, int n, byte b)
1028 {
1029 int i = n;
1030 do *layout++ = b; while (--i);
1031 if (n > 4) {
1032 layout[0 - n] = 0;
1033 layout[n - 1 - n] = 0;
1034 }
1035 return layout;
1036 }
1037
1045 void GetStationLayout(byte *layout, int numtracks, int plat_len, const StationSpec *statspec)
1046 {
1047 if (statspec != NULL && statspec->lengths >= plat_len &&
1048 statspec->platforms[plat_len - 1] >= numtracks &&
1049 statspec->layouts[plat_len - 1][numtracks - 1]) {
1050 /* Custom layout defined, follow it. */
1051 memcpy(layout, statspec->layouts[plat_len - 1][numtracks - 1],
1052 plat_len * numtracks);
1053 return;
1054 }
1055
1056 if (plat_len == 1) {
1057 CreateSingle(layout, numtracks);
1058 } else {
1059 if (numtracks & 1) layout = CreateSingle(layout, plat_len);
1060 numtracks >>= 1;
1061
1062 while (--numtracks >= 0) {
1063 layout = CreateMulti(layout, plat_len, 4);
1064 layout = CreateMulti(layout, plat_len, 6);
1065 }
1066 }
1067 }
1068
1080 template <class T, StringID error_message>
1081 CommandCost FindJoiningBaseStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, T **st)
1082 {
1083 assert(*st == NULL);
1084 bool check_surrounding = true;
1085
1086 if (_settings_game.station.adjacent_stations) {
1087 if (existing_station != INVALID_STATION) {
1088 if (adjacent && existing_station != station_to_join) {
1089 /* You can't build an adjacent station over the top of one that
1090 * already exists. */
1091 return_cmd_error(error_message);
1092 } else {
1093 /* Extend the current station, and don't check whether it will
1094 * be near any other stations. */
1095 *st = T::GetIfValid(existing_station);
1096 check_surrounding = (*st == NULL);
1097 }
1098 } else {
1099 /* There's no station here. Don't check the tiles surrounding this
1100 * one if the company wanted to build an adjacent station. */
1101 if (adjacent) check_surrounding = false;
1102 }
1103 }
1104
1105 if (check_surrounding) {
1106 /* Make sure there are no similar stations around us. */
1107 CommandCost ret = GetStationAround(ta, existing_station, st);
1108 if (ret.Failed()) return ret;
1109 }
1110
1111 /* Distant join */
1112 if (*st == NULL && station_to_join != INVALID_STATION) *st = T::GetIfValid(station_to_join);
1113
1114 return CommandCost();
1115 }
1116
1126 static CommandCost FindJoiningStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
1127 {
1128 return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_RAILWAY_STATION_FIRST>(existing_station, station_to_join, adjacent, ta, st);
1129 }
1130
1140 CommandCost FindJoiningWaypoint(StationID existing_waypoint, StationID waypoint_to_join, bool adjacent, TileArea ta, Waypoint **wp)
1141 {
1142 return FindJoiningBaseStation<Waypoint, STR_ERROR_MUST_REMOVE_RAILWAYPOINT_FIRST>(existing_waypoint, waypoint_to_join, adjacent, ta, wp);
1143 }
1144
1149 static void FreeTrainReservation(Train *v)
1150 {
1151 FreeTrainTrackReservation(v);
1152 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
1153 v = v->Last();
1154 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), false);
1155 }
1156
1161 static void RestoreTrainReservation(Train *v)
1162 {
1163 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
1164 TryPathReserve(v, true, true);
1165 v = v->Last();
1166 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
1167 }
1168
1186 CommandCost CmdBuildRailStation(TileIndex tile_org, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1187 {
1188 /* Unpack parameters */
1189 RailType rt = Extract<RailType, 0, 4>(p1);
1190 Axis axis = Extract<Axis, 4, 1>(p1);
1191 byte numtracks = GB(p1, 8, 8);
1192 byte plat_len = GB(p1, 16, 8);
1193 bool adjacent = HasBit(p1, 24);
1194
1195 StationClassID spec_class = Extract<StationClassID, 0, 8>(p2);
1196 byte spec_index = GB(p2, 8, 8);
1197 StationID station_to_join = GB(p2, 16, 16);
1198
1199 /* Does the authority allow this? */
1200 CommandCost ret = CheckIfAuthorityAllowsNewStation(tile_org, flags);
1201 if (ret.Failed()) return ret;
1202
1203 if (!ValParamRailtype(rt)) return CMD_ERROR;
1204
1205 /* Check if the given station class is valid */
1206 if ((uint)spec_class >= StationClass::GetClassCount() || spec_class == STAT_CLASS_WAYP) return CMD_ERROR;
1207 if (spec_index >= StationClass::Get(spec_class)->GetSpecCount()) return CMD_ERROR;
1208 if (plat_len == 0 || numtracks == 0) return CMD_ERROR;
1209
1210 int w_org, h_org;
1211 if (axis == AXIS_X) {
1212 w_org = plat_len;
1213 h_org = numtracks;
1214 } else {
1215 h_org = plat_len;
1216 w_org = numtracks;
1217 }
1218
1219 bool reuse = (station_to_join != NEW_STATION);
1220 if (!reuse) station_to_join = INVALID_STATION;
1221 bool distant_join = (station_to_join != INVALID_STATION);
1222
1223 if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
1224
1225 if (h_org > _settings_game.station.station_spread || w_org > _settings_game.station.station_spread) return CMD_ERROR;
1226
1227 /* these values are those that will be stored in train_tile and station_platforms */
1228 TileArea new_location(tile_org, w_org, h_org);
1229
1230 /* Make sure the area below consists of clear tiles. (OR tiles belonging to a certain rail station) */
1231 StationID est = INVALID_STATION;
1232 SmallVector<Train *, 4> affected_vehicles;
1233 /* Clear the land below the station. */
1234 CommandCost cost = CheckFlatLandRailStation(new_location, flags, axis, &est, rt, affected_vehicles, spec_class, spec_index, plat_len, numtracks);
1235 if (cost.Failed()) return cost;
1236 /* Add construction expenses. */
1237 cost.AddCost((numtracks * _price[PR_BUILD_STATION_RAIL] + _price[PR_BUILD_STATION_RAIL_LENGTH]) * plat_len);
1238 cost.AddCost(numtracks * plat_len * RailBuildCost(rt));
1239
1240 Station *st = NULL;
1241 ret = FindJoiningStation(est, station_to_join, adjacent, new_location, &st);
1242 if (ret.Failed()) return ret;
1243
1244 ret = BuildStationPart(&st, flags, reuse, new_location, STATIONNAMING_RAIL);
1245 if (ret.Failed()) return ret;
1246
1247 if (st != NULL && st->train_station.tile != INVALID_TILE) {
1248 CommandCost ret = CanExpandRailStation(st, new_location, axis);
1249 if (ret.Failed()) return ret;
1250 }
1251
1252 /* Check if we can allocate a custom stationspec to this station */
1253 const StationSpec *statspec = StationClass::Get(spec_class)->GetSpec(spec_index);
1254 int specindex = AllocateSpecToStation(statspec, st, (flags & DC_EXEC) != 0);
1255 if (specindex == -1) return_cmd_error(STR_ERROR_TOO_MANY_STATION_SPECS);
1256
1257 if (statspec != NULL) {
1258 /* Perform NewStation checks */
1259
1260 /* Check if the station size is permitted */
1261 if (HasBit(statspec->disallowed_platforms, min(numtracks - 1, 7)) || HasBit(statspec->disallowed_lengths, min(plat_len - 1, 7))) {
1262 return CMD_ERROR;
1263 }
1264
1265 /* Check if the station is buildable */
1266 if (HasBit(statspec->callback_mask, CBM_STATION_AVAIL)) {
1267 uint16 cb_res = GetStationCallback(CBID_STATION_AVAILABILITY, 0, 0, statspec, NULL, INVALID_TILE);
1268 if (cb_res != CALLBACK_FAILED && !Convert8bitBooleanCallback(statspec->grf_prop.grffile, CBID_STATION_AVAILABILITY, cb_res)) return CMD_ERROR;
1269 }
1270 }
1271
1272 if (flags & DC_EXEC) {
1273 TileIndexDiff tile_delta;
1274 byte *layout_ptr;
1275 byte numtracks_orig;
1276 Track track;
1277
1278 st->train_station = new_location;
1279 st->AddFacility(FACIL_TRAIN, new_location.tile);
1280
1281 st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TRY);
1282
1283 if (statspec != NULL) {
1284 /* Include this station spec's animation trigger bitmask
1285 * in the station's cached copy. */
1286 st->cached_anim_triggers |= statspec->animation.triggers;
1287 }
1288
1289 tile_delta = (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
1290 track = AxisToTrack(axis);
1291
1292 layout_ptr = AllocaM(byte, numtracks * plat_len);
1293 GetStationLayout(layout_ptr, numtracks, plat_len, statspec);
1294
1295 numtracks_orig = numtracks;
1296
1297 Company *c = Company::Get(st->owner);
1298 TileIndex tile_track = tile_org;
1299 do {
1300 TileIndex tile = tile_track;
1301 int w = plat_len;
1302 do {
1303 byte layout = *layout_ptr++;
1304 if (IsRailStationTile(tile) && HasStationReservation(tile)) {
1305 /* Check for trains having a reservation for this tile. */
1306 Train *v = GetTrainForReservation(tile, AxisToTrack(GetRailStationAxis(tile)));
1307 if (v != NULL) {
1308 *affected_vehicles.Append() = v;
1309 FreeTrainReservation(v);
1310 }
1311 }
1312
1313 /* Railtype can change when overbuilding. */
1314 if (IsRailStationTile(tile)) {
1315 if (!IsStationTileBlocked(tile)) c->infrastructure.rail[GetRailType(tile)]--;
1316 c->infrastructure.station--;
1317 }
1318
1319 /* Remove animation if overbuilding */
1320 DeleteAnimatedTile(tile);
1321 byte old_specindex = HasStationTileRail(tile) ? GetCustomStationSpecIndex(tile) : 0;
1322 MakeRailStation(tile, st->owner, st->index, axis, layout & ~1, rt);
1323 /* Free the spec if we overbuild something */
1324 DeallocateSpecFromStation(st, old_specindex);
1325
1326 SetCustomStationSpecIndex(tile, specindex);
1327 SetStationTileRandomBits(tile, GB(Random(), 0, 4));
1328 SetAnimationFrame(tile, 0);
1329
1330 if (!IsStationTileBlocked(tile)) c->infrastructure.rail[rt]++;
1331 c->infrastructure.station++;
1332
1333 if (statspec != NULL) {
1334 /* Use a fixed axis for GetPlatformInfo as our platforms / numtracks are always the right way around */
1335 uint32 platinfo = GetPlatformInfo(AXIS_X, GetStationGfx(tile), plat_len, numtracks_orig, plat_len - w, numtracks_orig - numtracks, false);
1336
1337 /* As the station is not yet completely finished, the station does not yet exist. */
1338 uint16 callback = GetStationCallback(CBID_STATION_TILE_LAYOUT, platinfo, 0, statspec, NULL, tile);
1339 if (callback != CALLBACK_FAILED) {
1340 if (callback < 8) {
1341 SetStationGfx(tile, (callback & ~1) + axis);
1342 } else {
1343 ErrorUnknownCallbackResult(statspec->grf_prop.grffile->grfid, CBID_STATION_TILE_LAYOUT, callback);
1344 }
1345 }
1346
1347 /* Trigger station animation -- after building? */
1348 TriggerStationAnimation(st, tile, SAT_BUILT);
1349 }
1350
1351 tile += tile_delta;
1352 } while (--w);
1353 AddTrackToSignalBuffer(tile_track, track, _current_company);
1354 YapfNotifyTrackLayoutChange(tile_track, track);
1355 tile_track += tile_delta ^ TileDiffXY(1, 1); // perpendicular to tile_delta
1356 } while (--numtracks);
1357
1358 for (uint i = 0; i < affected_vehicles.Length(); ++i) {
1359 /* Restore reservations of trains. */
1360 RestoreTrainReservation(affected_vehicles[i]);
1361 }
1362
1363 /* Check whether we need to expand the reservation of trains already on the station. */
1364 TileArea update_reservation_area;
1365 if (axis == AXIS_X) {
1366 update_reservation_area = TileArea(tile_org, 1, numtracks_orig);
1367 } else {
1368 update_reservation_area = TileArea(tile_org, numtracks_orig, 1);
1369 }
1370
1371 TILE_AREA_LOOP(tile, update_reservation_area) {
1372 /* Don't even try to make eye candy parts reserved. */
1373 if (IsStationTileBlocked(tile)) continue;
1374
1375 DiagDirection dir = AxisToDiagDir(axis);
1376 TileIndexDiff tile_offset = TileOffsByDiagDir(dir);
1377 TileIndex platform_begin = tile;
1378 TileIndex platform_end = tile;
1379
1380 /* We can only account for tiles that are reachable from this tile, so ignore primarily blocked tiles while finding the platform begin and end. */
1381 for (TileIndex next_tile = platform_begin - tile_offset; IsCompatibleTrainStationTile(next_tile, platform_begin); next_tile -= tile_offset) {
1382 platform_begin = next_tile;
1383 }
1384 for (TileIndex next_tile = platform_end + tile_offset; IsCompatibleTrainStationTile(next_tile, platform_end); next_tile += tile_offset) {
1385 platform_end = next_tile;
1386 }
1387
1388 /* If there is at least on reservation on the platform, we reserve the whole platform. */
1389 bool reservation = false;
1390 for (TileIndex t = platform_begin; !reservation && t <= platform_end; t += tile_offset) {
1391 reservation = HasStationReservation(t);
1392 }
1393
1394 if (reservation) {
1395 SetRailStationPlatformReservation(platform_begin, dir, true);
1396 }
1397 }
1398
1399 st->MarkTilesDirty(false);
1400 st->UpdateVirtCoord();
1401 UpdateStationAcceptance(st, false);
1402 st->RecomputeIndustriesNear();
1403 InvalidateWindowData(WC_SELECT_STATION, 0, 0);
1404 InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
1405 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
1406 DirtyCompanyInfrastructureWindows(st->owner);
1407 }
1408
1409 return cost;
1410 }
1411
1412 static void MakeRailStationAreaSmaller(BaseStation *st)
1413 {
1414 TileArea ta = st->train_station;
1415
1416 restart:
1417
1418 /* too small? */
1419 if (ta.w != 0 && ta.h != 0) {
1420 /* check the left side, x = constant, y changes */
1421 for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(0, i));) {
1422 /* the left side is unused? */
1423 if (++i == ta.h) {
1424 ta.tile += TileDiffXY(1, 0);
1425 ta.w--;
1426 goto restart;
1427 }
1428 }
1429
1430 /* check the right side, x = constant, y changes */
1431 for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(ta.w - 1, i));) {
1432 /* the right side is unused? */
1433 if (++i == ta.h) {
1434 ta.w--;
1435 goto restart;
1436 }
1437 }
1438
1439 /* check the upper side, y = constant, x changes */
1440 for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, 0));) {
1441 /* the left side is unused? */
1442 if (++i == ta.w) {
1443 ta.tile += TileDiffXY(0, 1);
1444 ta.h--;
1445 goto restart;
1446 }
1447 }
1448
1449 /* check the lower side, y = constant, x changes */
1450 for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, ta.h - 1));) {
1451 /* the left side is unused? */
1452 if (++i == ta.w) {
1453 ta.h--;
1454 goto restart;
1455 }
1456 }
1457 } else {
1458 ta.Clear();
1459 }
1460
1461 st->train_station = ta;
1462 }
1463
1474 template <class T>
1475 CommandCost RemoveFromRailBaseStation(TileArea ta, SmallVector<T *, 4> &affected_stations, DoCommandFlag flags, Money removal_cost, bool keep_rail)
1476 {
1477 /* Count of the number of tiles removed */
1478 int quantity = 0;
1479 CommandCost total_cost(EXPENSES_CONSTRUCTION);
1480 /* Accumulator for the errors seen during clearing. If no errors happen,
1481 * and the quantity is 0 there is no station. Otherwise it will be one
1482 * of the other error that got accumulated. */
1483 CommandCost error;
1484
1485 /* Do the action for every tile into the area */
1486 TILE_AREA_LOOP(tile, ta) {
1487 /* Make sure the specified tile is a rail station */
1488 if (!HasStationTileRail(tile)) continue;
1489
1490 /* If there is a vehicle on ground, do not allow to remove (flood) the tile */
1491 CommandCost ret = EnsureNoVehicleOnGround(tile);
1492 error.AddCost(ret);
1493 if (ret.Failed()) continue;
1494
1495 /* Check ownership of station */
1496 T *st = T::GetByTile(tile);
1497 if (st == NULL) continue;
1498
1499 if (_current_company != OWNER_WATER) {
1500 CommandCost ret = CheckOwnership(st->owner);
1501 error.AddCost(ret);
1502 if (ret.Failed()) continue;
1503 }
1504
1505 /* If we reached here, the tile is valid so increase the quantity of tiles we will remove */
1506 quantity++;
1507
1508 if (keep_rail || IsStationTileBlocked(tile)) {
1509 /* Don't refund the 'steel' of the track when we keep the
1510 * rail, or when the tile didn't have any rail at all. */
1511 total_cost.AddCost(-_price[PR_CLEAR_RAIL]);
1512 }
1513
1514 if (flags & DC_EXEC) {
1515 /* read variables before the station tile is removed */
1516 uint specindex = GetCustomStationSpecIndex(tile);
1517 Track track = GetRailStationTrack(tile);
1518 Owner owner = GetTileOwner(tile);
1519 RailType rt = GetRailType(tile);
1520 Train *v = NULL;
1521
1522 if (HasStationReservation(tile)) {
1523 v = GetTrainForReservation(tile, track);
1524 if (v != NULL) FreeTrainReservation(v);
1525 }
1526
1527 bool build_rail = keep_rail && !IsStationTileBlocked(tile);
1528 if (!build_rail && !IsStationTileBlocked(tile)) Company::Get(owner)->infrastructure.rail[rt]--;
1529
1530 DoClearSquare(tile);
1531 DeleteNewGRFInspectWindow(GSF_STATIONS, tile);
1532 if (build_rail) MakeRailNormal(tile, owner, TrackToTrackBits(track), rt);
1533 Company::Get(owner)->infrastructure.station--;
1534 DirtyCompanyInfrastructureWindows(owner);
1535
1536 st->rect.AfterRemoveTile(st, tile);
1537 AddTrackToSignalBuffer(tile, track, owner);
1538 YapfNotifyTrackLayoutChange(tile, track);
1539
1540 DeallocateSpecFromStation(st, specindex);
1541
1542 affected_stations.Include(st);
1543
1544 if (v != NULL) RestoreTrainReservation(v);
1545 }
1546 }
1547
1548 if (quantity == 0) return error.Failed() ? error : CommandCost(STR_ERROR_THERE_IS_NO_STATION);
1549
1550 for (T **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
1551 T *st = *stp;
1552
1553 /* now we need to make the "spanned" area of the railway station smaller
1554 * if we deleted something at the edges.
1555 * we also need to adjust train_tile. */
1556 MakeRailStationAreaSmaller(st);
1557 UpdateStationSignCoord(st);
1558
1559 /* if we deleted the whole station, delete the train facility. */
1560 if (st->train_station.tile == INVALID_TILE) {
1561 st->facilities &= ~FACIL_TRAIN;
1562 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
1563 st->UpdateVirtCoord();
1564 DeleteStationIfEmpty(st);
1565 }
1566 }
1567
1568 total_cost.AddCost(quantity * removal_cost);
1569 return total_cost;
1570 }
1571
1583 CommandCost CmdRemoveFromRailStation(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1584 {
1585 TileIndex end = p1 == 0 ? start : p1;
1586 if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
1587
1588 TileArea ta(start, end);
1589 SmallVector<Station *, 4> affected_stations;
1590
1591 CommandCost ret = RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_STATION_RAIL], HasBit(p2, 0));
1592 if (ret.Failed()) return ret;
1593
1594 /* Do all station specific functions here. */
1595 for (Station **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
1596 Station *st = *stp;
1597
1598 if (st->train_station.tile == INVALID_TILE) SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
1599 st->MarkTilesDirty(false);
1600 st->RecomputeIndustriesNear();
1601 }
1602
1603 /* Now apply the rail cost to the number that we deleted */
1604 return ret;
1605 }
1606
1618 CommandCost CmdRemoveFromRailWaypoint(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1619 {
1620 TileIndex end = p1 == 0 ? start : p1;
1621 if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
1622
1623 TileArea ta(start, end);
1624 SmallVector<Waypoint *, 4> affected_stations;
1625
1626 return RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_WAYPOINT_RAIL], HasBit(p2, 0));
1627 }
1628
1629
1638 template <class T>
1639 CommandCost RemoveRailStation(T *st, DoCommandFlag flags, Money removal_cost)
1640 {
1641 /* Current company owns the station? */
1642 if (_current_company != OWNER_WATER) {
1643 CommandCost ret = CheckOwnership(st->owner);
1644 if (ret.Failed()) return ret;
1645 }
1646
1647 /* determine width and height of platforms */
1648 TileArea ta = st->train_station;
1649
1650 assert(ta.w != 0 && ta.h != 0);
1651
1652 CommandCost cost(EXPENSES_CONSTRUCTION);
1653 /* clear all areas of the station */
1654 TILE_AREA_LOOP(tile, ta) {
1655 /* only remove tiles that are actually train station tiles */
1656 if (st->TileBelongsToRailStation(tile)) {
1657 SmallVector<T*, 4> affected_stations; // dummy
1658 CommandCost ret = RemoveFromRailBaseStation(TileArea(tile, 1, 1), affected_stations, flags, removal_cost, false);
1659 if (ret.Failed()) return ret;
1660 cost.AddCost(ret);
1661 }
1662 }
1663
1664 return cost;
1665 }
1666
1673 static CommandCost RemoveRailStation(TileIndex tile, DoCommandFlag flags)
1674 {
1675 /* if there is flooding, remove platforms tile by tile */
1676 if (_current_company == OWNER_WATER) {
1677 return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_STATION);
1678 }
1679
1680 Station *st = Station::GetByTile(tile);
1681 CommandCost cost = RemoveRailStation(st, flags, _price[PR_CLEAR_STATION_RAIL]);
1682
1683 if (flags & DC_EXEC) st->RecomputeIndustriesNear();
1684
1685 return cost;
1686 }
1687
1694 static CommandCost RemoveRailWaypoint(TileIndex tile, DoCommandFlag flags)
1695 {
1696 /* if there is flooding, remove waypoints tile by tile */
1697 if (_current_company == OWNER_WATER) {
1698 return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_WAYPOINT);
1699 }
1700
1701 return RemoveRailStation(Waypoint::GetByTile(tile), flags, _price[PR_CLEAR_WAYPOINT_RAIL]);
1702 }
1703
1704
1710 static RoadStop **FindRoadStopSpot(bool truck_station, Station *st)
1711 {
1712 RoadStop **primary_stop = (truck_station) ? &st->truck_stops : &st->bus_stops;
1713
1714 if (*primary_stop == NULL) {
1715 /* we have no roadstop of the type yet, so write a "primary stop" */
1716 return primary_stop;
1717 } else {
1718 /* there are stops already, so append to the end of the list */
1719 RoadStop *stop = *primary_stop;
1720 while (stop->next != NULL) stop = stop->next;
1721 return &stop->next;
1722 }
1723 }
1724
1725 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags);
1726
1736 static CommandCost FindJoiningRoadStop(StationID existing_stop, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
1737 {
1738 return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_ROAD_STOP_FIRST>(existing_stop, station_to_join, adjacent, ta, st);
1739 }
1740
1757 CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1758 {
1759 bool type = HasBit(p2, 0);
1760 bool is_drive_through = HasBit(p2, 1);
1761 RoadTypes rts = Extract<RoadTypes, 2, 2>(p2);
1762 StationID station_to_join = GB(p2, 16, 16);
1763 bool reuse = (station_to_join != NEW_STATION);
1764 if (!reuse) station_to_join = INVALID_STATION;
1765 bool distant_join = (station_to_join != INVALID_STATION);
1766
1767 uint8 width = (uint8)GB(p1, 0, 8);
1768 uint8 lenght = (uint8)GB(p1, 8, 8);
1769
1770 /* Check if the requested road stop is too big */
1771 if (width > _settings_game.station.station_spread || lenght > _settings_game.station.station_spread) return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
1772 /* Check for incorrect width / length. */
1773 if (width == 0 || lenght == 0) return CMD_ERROR;
1774 /* Check if the first tile and the last tile are valid */
1775 if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, lenght - 1) == INVALID_TILE) return CMD_ERROR;
1776
1777 TileArea roadstop_area(tile, width, lenght);
1778
1779 if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
1780
1781 if (!HasExactlyOneBit(rts) || !HasRoadTypesAvail(_current_company, rts)) return CMD_ERROR;
1782
1783 /* Trams only have drive through stops */
1784 if (!is_drive_through && HasBit(rts, ROADTYPE_TRAM)) return CMD_ERROR;
1785
1786 DiagDirection ddir;
1787 Axis axis;
1788 if (is_drive_through) {
1789 /* By definition axis is valid, due to there being 2 axes and reading 1 bit. */
1790 axis = Extract<Axis, 6, 1>(p2);
1791 ddir = AxisToDiagDir(axis);
1792 } else {
1793 /* By definition ddir is valid, due to there being 4 diagonal directions and reading 2 bits. */
1794 ddir = Extract<DiagDirection, 6, 2>(p2);
1795 axis = DiagDirToAxis(ddir);
1796 }
1797
1798 CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
1799 if (ret.Failed()) return ret;
1800
1801 /* Total road stop cost. */
1802 CommandCost cost(EXPENSES_CONSTRUCTION, roadstop_area.w * roadstop_area.h * _price[type ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
1803 StationID est = INVALID_STATION;
1804 ret = CheckFlatLandRoadStop(roadstop_area, flags, is_drive_through ? 5 << axis : 1 << ddir, is_drive_through, type, axis, &est, rts);
1805 if (ret.Failed()) return ret;
1806 cost.AddCost(ret);
1807
1808 Station *st = NULL;
1809 ret = FindJoiningRoadStop(est, station_to_join, HasBit(p2, 5), roadstop_area, &st);
1810 if (ret.Failed()) return ret;
1811
1812 /* Check if this number of road stops can be allocated. */
1813 if (!RoadStop::CanAllocateItem(roadstop_area.w * roadstop_area.h)) return_cmd_error(type ? STR_ERROR_TOO_MANY_TRUCK_STOPS : STR_ERROR_TOO_MANY_BUS_STOPS);
1814
1815 ret = BuildStationPart(&st, flags, reuse, roadstop_area, STATIONNAMING_ROAD);
1816 if (ret.Failed()) return ret;
1817
1818 if (flags & DC_EXEC) {
1819 /* Check every tile in the area. */
1820 TILE_AREA_LOOP(cur_tile, roadstop_area) {
1821 RoadTypes cur_rts = GetRoadTypes(cur_tile);
1822 Owner road_owner = HasBit(cur_rts, ROADTYPE_ROAD) ? GetRoadOwner(cur_tile, ROADTYPE_ROAD) : _current_company;
1823 Owner tram_owner = HasBit(cur_rts, ROADTYPE_TRAM) ? GetRoadOwner(cur_tile, ROADTYPE_TRAM) : _current_company;
1824
1825 if (IsTileType(cur_tile, MP_STATION) && IsRoadStop(cur_tile)) {
1826 RemoveRoadStop(cur_tile, flags);
1827 }
1828
1829 RoadStop *road_stop = new RoadStop(cur_tile);
1830 /* Insert into linked list of RoadStops. */
1831 RoadStop **currstop = FindRoadStopSpot(type, st);
1832 *currstop = road_stop;
1833
1834 if (type) {
1835 st->truck_station.Add(cur_tile);
1836 } else {
1837 st->bus_station.Add(cur_tile);
1838 }
1839
1840 /* Initialize an empty station. */
1841 st->AddFacility((type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, cur_tile);
1842
1843 st->rect.BeforeAddTile(cur_tile, StationRect::ADD_TRY);
1844
1845 RoadStopType rs_type = type ? ROADSTOP_TRUCK : ROADSTOP_BUS;
1846 if (is_drive_through) {
1847 /* Update company infrastructure counts. If the current tile is a normal
1848 * road tile, count only the new road bits needed to get a full diagonal road. */
1849 RoadType rt;
1850 FOR_EACH_SET_ROADTYPE(rt, cur_rts | rts) {
1851 Company *c = Company::GetIfValid(rt == ROADTYPE_ROAD ? road_owner : tram_owner);
1852 if (c != NULL) {
1853 c->infrastructure.road[rt] += 2 - (IsNormalRoadTile(cur_tile) && HasBit(cur_rts, rt) ? CountBits(GetRoadBits(cur_tile, rt)) : 0);
1854 DirtyCompanyInfrastructureWindows(c->index);
1855 }
1856 }
1857
1858 MakeDriveThroughRoadStop(cur_tile, st->owner, road_owner, tram_owner, st->index, rs_type, rts | cur_rts, axis);
1859 road_stop->MakeDriveThrough();
1860 } else {
1861 /* Non-drive-through stop never overbuild and always count as two road bits. */
1862 Company::Get(st->owner)->infrastructure.road[FIND_FIRST_BIT(rts)] += 2;
1863 MakeRoadStop(cur_tile, st->owner, st->index, rs_type, rts, ddir);
1864 }
1865 Company::Get(st->owner)->infrastructure.station++;
1866 DirtyCompanyInfrastructureWindows(st->owner);
1867
1868 MarkTileDirtyByTile(cur_tile);
1869 }
1870 }
1871
1872 if (st != NULL) {
1873 st->UpdateVirtCoord();
1874 UpdateStationAcceptance(st, false);
1875 st->RecomputeIndustriesNear();
1876 InvalidateWindowData(WC_SELECT_STATION, 0, 0);
1877 InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
1878 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ROADVEHS);
1879 }
1880 return cost;
1881 }
1882
1883
1884 static Vehicle *ClearRoadStopStatusEnum(Vehicle *v, void *)
1885 {
1886 if (v->type == VEH_ROAD) {
1887 /* Okay... we are a road vehicle on a drive through road stop.
1888 * But that road stop has just been removed, so we need to make
1889 * sure we are in a valid state... however, vehicles can also
1890 * turn on road stop tiles, so only clear the 'road stop' state
1891 * bits and only when the state was 'in road stop', otherwise
1892 * we'll end up clearing the turn around bits. */
1893 RoadVehicle *rv = RoadVehicle::From(v);
1894 if (HasBit(rv->state, RVS_IN_DT_ROAD_STOP)) rv->state &= RVSB_ROAD_STOP_TRACKDIR_MASK;
1895 }
1896
1897 return NULL;
1898 }
1899
1900
1907 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags)
1908 {
1909 Station *st = Station::GetByTile(tile);
1910
1911 if (_current_company != OWNER_WATER) {
1912 CommandCost ret = CheckOwnership(st->owner);
1913 if (ret.Failed()) return ret;
1914 }
1915
1916 bool is_truck = IsTruckStop(tile);
1917
1918 RoadStop **primary_stop;
1919 RoadStop *cur_stop;
1920 if (is_truck) { // truck stop
1921 primary_stop = &st->truck_stops;
1922 cur_stop = RoadStop::GetByTile(tile, ROADSTOP_TRUCK);
1923 } else {
1924 primary_stop = &st->bus_stops;
1925 cur_stop = RoadStop::GetByTile(tile, ROADSTOP_BUS);
1926 }
1927
1928 assert(cur_stop != NULL);
1929
1930 /* don't do the check for drive-through road stops when company bankrupts */
1931 if (IsDriveThroughStopTile(tile) && (flags & DC_BANKRUPT)) {
1932 /* remove the 'going through road stop' status from all vehicles on that tile */
1933 if (flags & DC_EXEC) FindVehicleOnPos(tile, NULL, &ClearRoadStopStatusEnum);
1934 } else {
1935 CommandCost ret = EnsureNoVehicleOnGround(tile);
1936 if (ret.Failed()) return ret;
1937 }
1938
1939 if (flags & DC_EXEC) {
1940 if (*primary_stop == cur_stop) {
1941 /* removed the first stop in the list */
1942 *primary_stop = cur_stop->next;
1943 /* removed the only stop? */
1944 if (*primary_stop == NULL) {
1945 st->facilities &= (is_truck ? ~FACIL_TRUCK_STOP : ~FACIL_BUS_STOP);
1946 }
1947 } else {
1948 /* tell the predecessor in the list to skip this stop */
1949 RoadStop *pred = *primary_stop;
1950 while (pred->next != cur_stop) pred = pred->next;
1951 pred->next = cur_stop->next;
1952 }
1953
1954 /* Update company infrastructure counts. */
1955 RoadType rt;
1956 FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(tile)) {
1957 Company *c = Company::GetIfValid(GetRoadOwner(tile, rt));
1958 if (c != NULL) {
1959 c->infrastructure.road[rt] -= 2;
1960 DirtyCompanyInfrastructureWindows(c->index);
1961 }
1962 }
1963 Company::Get(st->owner)->infrastructure.station--;
1964 DirtyCompanyInfrastructureWindows(st->owner);
1965
1966 if (IsDriveThroughStopTile(tile)) {
1967 /* Clears the tile for us */
1968 cur_stop->ClearDriveThrough();
1969 } else {
1970 DoClearSquare(tile);
1971 }
1972
1973 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ROADVEHS);
1974 delete cur_stop;
1975
1976 /* Make sure no vehicle is going to the old roadstop */
1977 RoadVehicle *v;
1978 FOR_ALL_ROADVEHICLES(v) {
1979 if (v->First() == v && v->current_order.IsType(OT_GOTO_STATION) &&
1980 v->dest_tile == tile) {
1981 v->dest_tile = v->GetOrderStationLocation(st->index);
1982 }
1983 }
1984
1985 st->rect.AfterRemoveTile(st, tile);
1986
1987 st->UpdateVirtCoord();
1988 st->RecomputeIndustriesNear();
1989 DeleteStationIfEmpty(st);
1990
1991 /* Update the tile area of the truck/bus stop */
1992 if (is_truck) {
1993 st->truck_station.Clear();
1994 for (const RoadStop *rs = st->truck_stops; rs != NULL; rs = rs->next) st->truck_station.Add(rs->xy);
1995 } else {
1996 st->bus_station.Clear();
1997 for (const RoadStop *rs = st->bus_stops; rs != NULL; rs = rs->next) st->bus_station.Add(rs->xy);
1998 }
1999 }
2000
2001 return CommandCost(EXPENSES_CONSTRUCTION, _price[is_truck ? PR_CLEAR_STATION_TRUCK : PR_CLEAR_STATION_BUS]);
2002 }
2003
2015 CommandCost CmdRemoveRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2016 {
2017 uint8 width = (uint8)GB(p1, 0, 8);
2018 uint8 height = (uint8)GB(p1, 8, 8);
2019 bool keep_drive_through_roads = !HasBit(p2, 1);
2020
2021 /* Check for incorrect width / height. */
2022 if (width == 0 || height == 0) return CMD_ERROR;
2023 /* Check if the first tile and the last tile are valid */
2024 if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, height - 1) == INVALID_TILE) return CMD_ERROR;
2025 /* Bankrupting company is not supposed to remove roads, there may be road vehicles. */
2026 if (!keep_drive_through_roads && (flags & DC_BANKRUPT)) return CMD_ERROR;
2027
2028 TileArea roadstop_area(tile, width, height);
2029
2030 CommandCost cost(EXPENSES_CONSTRUCTION);
2031 CommandCost last_error(STR_ERROR_THERE_IS_NO_STATION);
2032 bool had_success = false;
2033
2034 TILE_AREA_LOOP(cur_tile, roadstop_area) {
2035 /* Make sure the specified tile is a road stop of the correct type */
2036 if (!IsTileType(cur_tile, MP_STATION) || !IsRoadStop(cur_tile) || (uint32)GetRoadStopType(cur_tile) != GB(p2, 0, 1)) continue;
2037
2038 /* Save information on to-be-restored roads before the stop is removed. */
2039 RoadTypes rts = ROADTYPES_NONE;
2040 RoadBits road_bits = ROAD_NONE;
2041 Owner road_owner[] = { OWNER_NONE, OWNER_NONE };
2042 assert_compile(lengthof(road_owner) == ROADTYPE_END);
2043 if (IsDriveThroughStopTile(cur_tile)) {
2044 RoadType rt;
2045 FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(cur_tile)) {
2046 road_owner[rt] = GetRoadOwner(cur_tile, rt);
2047 /* If we don't want to preserve our roads then restore only roads of others. */
2048 if (keep_drive_through_roads || road_owner[rt] != _current_company) SetBit(rts, rt);
2049 }
2050 road_bits = AxisToRoadBits(DiagDirToAxis(GetRoadStopDir(cur_tile)));
2051 }
2052
2053 CommandCost ret = RemoveRoadStop(cur_tile, flags);
2054 if (ret.Failed()) {
2055 last_error = ret;
2056 continue;
2057 }
2058 cost.AddCost(ret);
2059 had_success = true;
2060
2061 /* Restore roads. */
2062 if ((flags & DC_EXEC) && rts != ROADTYPES_NONE) {
2063 MakeRoadNormal(cur_tile, road_bits, rts, ClosestTownFromTile(cur_tile, UINT_MAX)->index,
2064 road_owner[ROADTYPE_ROAD], road_owner[ROADTYPE_TRAM]);
2065
2066 /* Update company infrastructure counts. */
2067 RoadType rt;
2068 FOR_EACH_SET_ROADTYPE(rt, rts) {
2069 Company *c = Company::GetIfValid(GetRoadOwner(cur_tile, rt));
2070 if (c != NULL) {
2071 c->infrastructure.road[rt] += CountBits(road_bits);
2072 DirtyCompanyInfrastructureWindows(c->index);
2073 }
2074 }
2075 }
2076 }
2077
2078 return had_success ? cost : last_error;
2079 }
2080
2087 static uint GetMinimalAirportDistanceToTile(TileIterator &it, TileIndex town_tile)
2088 {
2089 uint mindist = UINT_MAX;
2090
2091 for (TileIndex cur_tile = it; cur_tile != INVALID_TILE; cur_tile = ++it) {
2092 mindist = min(mindist, DistanceManhattan(town_tile, cur_tile));
2093 }
2094
2095 return mindist;
2096 }
2097
2107 uint8 GetAirportNoiseLevelForTown(const AirportSpec *as, TileIterator &it, TileIndex town_tile)
2108 {
2109 /* 0 cannot be accounted, and 1 is the lowest that can be reduced from town.
2110 * So no need to go any further*/
2111 if (as->noise_level < 2) return as->noise_level;
2112
2113 uint distance = GetMinimalAirportDistanceToTile(it, town_tile);
2114
2115 /* The steps for measuring noise reduction are based on the "magical" (and arbitrary) 8 base distance
2116 * adding the town_council_tolerance 4 times, as a way to graduate, depending of the tolerance.
2117 * Basically, it says that the less tolerant a town is, the bigger the distance before
2118 * an actual decrease can be granted */
2119 uint8 town_tolerance_distance = 8 + (_settings_game.difficulty.town_council_tolerance * 4);
2120
2121 /* now, we want to have the distance segmented using the distance judged bareable by town
2122 * This will give us the coefficient of reduction the distance provides. */
2123 uint noise_reduction = distance / town_tolerance_distance;
2124
2125 /* If the noise reduction equals the airport noise itself, don't give it for free.
2126 * Otherwise, simply reduce the airport's level. */
2127 return noise_reduction >= as->noise_level ? 1 : as->noise_level - noise_reduction;
2128 }
2129
2137 Town *AirportGetNearestTown(const AirportSpec *as, const TileIterator &it)
2138 {
2139 Town *t, *nearest = NULL;
2140 uint add = as->size_x + as->size_y - 2; // GetMinimalAirportDistanceToTile can differ from DistanceManhattan by this much
2141 uint mindist = UINT_MAX - add; // prevent overflow
2142 FOR_ALL_TOWNS(t) {
2143 if (DistanceManhattan(t->xy, it) < mindist + add) { // avoid calling GetMinimalAirportDistanceToTile too often
2144 TileIterator *copy = it.Clone();
2145 uint dist = GetMinimalAirportDistanceToTile(*copy, t->xy);
2146 delete copy;
2147 if (dist < mindist) {
2148 nearest = t;
2149 mindist = dist;
2150 }
2151 }
2152 }
2153
2154 return nearest;
2155 }
2156
2157
2159 void UpdateAirportsNoise()
2160 {
2161 Town *t;
2162 const Station *st;
2163
2164 FOR_ALL_TOWNS(t) t->noise_reached = 0;
2165
2166 FOR_ALL_STATIONS(st) {
2167 if (st->airport.tile != INVALID_TILE && st->airport.type != AT_OILRIG) {
2168 const AirportSpec *as = st->airport.GetSpec();
2169 AirportTileIterator it(st);
2170 Town *nearest = AirportGetNearestTown(as, it);
2171 nearest->noise_reached += GetAirportNoiseLevelForTown(as, it, nearest->xy);
2172 }
2173 }
2174 }
2175
2189 CommandCost CmdBuildAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2190 {
2191 StationID station_to_join = GB(p2, 16, 16);
2192 bool reuse = (station_to_join != NEW_STATION);
2193 if (!reuse) station_to_join = INVALID_STATION;
2194 bool distant_join = (station_to_join != INVALID_STATION);
2195 byte airport_type = GB(p1, 0, 8);
2196 byte layout = GB(p1, 8, 8);
2197
2198 if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
2199
2200 if (airport_type >= NUM_AIRPORTS) return CMD_ERROR;
2201
2202 CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
2203 if (ret.Failed()) return ret;
2204
2205 /* Check if a valid, buildable airport was chosen for construction */
2206 const AirportSpec *as = AirportSpec::Get(airport_type);
2207 if (!as->IsAvailable() || layout >= as->num_table) return CMD_ERROR;
2208
2209 Direction rotation = as->rotation[layout];
2210 int w = as->size_x;
2211 int h = as->size_y;
2212 if (rotation == DIR_E || rotation == DIR_W) Swap(w, h);
2213 TileArea airport_area = TileArea(tile, w, h);
2214
2215 if (w > _settings_game.station.station_spread || h > _settings_game.station.station_spread) {
2216 return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
2217 }
2218
2219 CommandCost cost = CheckFlatLand(airport_area, flags);
2220 if (cost.Failed()) return cost;
2221
2222 /* The noise level is the noise from the airport and reduce it to account for the distance to the town center. */
2223 AirportTileTableIterator iter(as->table[layout], tile);
2224 Town *nearest = AirportGetNearestTown(as, iter);
2225 uint newnoise_level = GetAirportNoiseLevelForTown(as, iter, nearest->xy);
2226
2227 /* Check if local auth would allow a new airport */
2228 StringID authority_refuse_message = STR_NULL;
2229 Town *authority_refuse_town = NULL;
2230
2231 if (_settings_game.economy.station_noise_level) {
2232 /* do not allow to build a new airport if this raise the town noise over the maximum allowed by town */
2233 if ((nearest->noise_reached + newnoise_level) > nearest->MaxTownNoise()) {
2234 authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_NOISE;
2235 authority_refuse_town = nearest;
2236 }
2237 } else {
2238 Town *t = ClosestTownFromTile(tile, UINT_MAX);
2239 uint num = 0;
2240 const Station *st;
2241 FOR_ALL_STATIONS(st) {
2242 if (st->town == t && (st->facilities & FACIL_AIRPORT) && st->airport.type != AT_OILRIG) num++;
2243 }
2244 if (num >= 2) {
2245 authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_AIRPORT;
2246 authority_refuse_town = t;
2247 }
2248 }
2249
2250 if (authority_refuse_message != STR_NULL) {
2251 SetDParam(0, authority_refuse_town->index);
2252 return_cmd_error(authority_refuse_message);
2253 }
2254
2255 Station *st = NULL;
2256 ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 0), airport_area, &st);
2257 if (ret.Failed()) return ret;
2258
2259 /* Distant join */
2260 if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
2261
2262 ret = BuildStationPart(&st, flags, reuse, airport_area, (GetAirport(airport_type)->flags & AirportFTAClass::AIRPLANES) ? STATIONNAMING_AIRPORT : STATIONNAMING_HELIPORT);
2263 if (ret.Failed()) return ret;
2264
2265 if (st != NULL && st->airport.tile != INVALID_TILE) {
2266 return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_AIRPORT);
2267 }
2268
2269 for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
2270 cost.AddCost(_price[PR_BUILD_STATION_AIRPORT]);
2271 }
2272
2273 if (flags & DC_EXEC) {
2274 /* Always add the noise, so there will be no need to recalculate when option toggles */
2275 nearest->noise_reached += newnoise_level;
2276
2277 st->AddFacility(FACIL_AIRPORT, tile);
2278 st->airport.type = airport_type;
2279 st->airport.layout = layout;
2280 st->airport.flags = 0;
2281 st->airport.rotation = rotation;
2282
2283 st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TRY);
2284
2285 for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
2286 MakeAirport(iter, st->owner, st->index, iter.GetStationGfx(), WATER_CLASS_INVALID);
2287 SetStationTileRandomBits(iter, GB(Random(), 0, 4));
2288 st->airport.Add(iter);
2289
2290 if (AirportTileSpec::Get(GetTranslatedAirportTileID(iter.GetStationGfx()))->animation.status != ANIM_STATUS_NO_ANIMATION) AddAnimatedTile(iter);
2291 }
2292
2293 /* Only call the animation trigger after all tiles have been built */
2294 for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
2295 AirportTileAnimationTrigger(st, iter, AAT_BUILT);
2296 }
2297
2298 UpdateAirplanesOnNewStation(st);
2299
2300 Company::Get(st->owner)->infrastructure.airport++;
2301 DirtyCompanyInfrastructureWindows(st->owner);
2302
2303 st->UpdateVirtCoord();
2304 UpdateStationAcceptance(st, false);
2305 st->RecomputeIndustriesNear();
2306 InvalidateWindowData(WC_SELECT_STATION, 0, 0);
2307 InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
2308 InvalidateWindowData(WC_STATION_VIEW, st->index, -1);
2309
2310 if (_settings_game.economy.station_noise_level) {
2311 SetWindowDirty(WC_TOWN_VIEW, st->town->index);
2312 }
2313 }
2314
2315 return cost;
2316 }
2317
2324 static CommandCost RemoveAirport(TileIndex tile, DoCommandFlag flags)
2325 {
2326 Station *st = Station::GetByTile(tile);
2327
2328 if (_current_company != OWNER_WATER) {
2329 CommandCost ret = CheckOwnership(st->owner);
2330 if (ret.Failed()) return ret;
2331 }
2332
2333 tile = st->airport.tile;
2334
2335 CommandCost cost(EXPENSES_CONSTRUCTION);
2336
2337 const Aircraft *a;
2338 FOR_ALL_AIRCRAFT(a) {
2339 if (!a->IsNormalAircraft()) continue;
2340 if (a->targetairport == st->index && a->state != FLYING) return CMD_ERROR;
2341 }
2342
2343 if (flags & DC_EXEC) {
2344 const AirportSpec *as = st->airport.GetSpec();
2345 /* The noise level is the noise from the airport and reduce it to account for the distance to the town center.
2346 * And as for construction, always remove it, even if the setting is not set, in order to avoid the
2347 * need of recalculation */
2348 AirportTileIterator it(st);
2349 Town *nearest = AirportGetNearestTown(as, it);
2350 nearest->noise_reached -= GetAirportNoiseLevelForTown(as, it, nearest->xy);
2351 }
2352
2353 TILE_AREA_LOOP(tile_cur, st->airport) {
2354 if (!st->TileBelongsToAirport(tile_cur)) continue;
2355
2356 CommandCost ret = EnsureNoVehicleOnGround(tile_cur);
2357 if (ret.Failed()) return ret;
2358
2359 cost.AddCost(_price[PR_CLEAR_STATION_AIRPORT]);
2360
2361 if (flags & DC_EXEC) {
2362 if (IsHangarTile(tile_cur)) OrderBackup::Reset(tile_cur, false);
2363 DeleteAnimatedTile(tile_cur);
2364 DoClearSquare(tile_cur);
2365 DeleteNewGRFInspectWindow(GSF_AIRPORTTILES, tile_cur);
2366 }
2367 }
2368
2369 if (flags & DC_EXEC) {
2370 /* Clear the persistent storage. */
2371 delete st->airport.psa;
2372
2373 for (uint i = 0; i < st->airport.GetNumHangars(); ++i) {
2374 DeleteWindowById(
2375 WC_VEHICLE_DEPOT, st->airport.GetHangarTile(i)
2376 );
2377 }
2378
2379 st->rect.AfterRemoveRect(st, st->airport);
2380
2381 st->airport.Clear();
2382 st->facilities &= ~FACIL_AIRPORT;
2383
2384 InvalidateWindowData(WC_STATION_VIEW, st->index, -1);
2385
2386 if (_settings_game.economy.station_noise_level) {
2387 SetWindowDirty(WC_TOWN_VIEW, st->town->index);
2388 }
2389
2390 Company::Get(st->owner)->infrastructure.airport--;
2391 DirtyCompanyInfrastructureWindows(st->owner);
2392
2393 st->UpdateVirtCoord();
2394 st->RecomputeIndustriesNear();
2395 DeleteStationIfEmpty(st);
2396 DeleteNewGRFInspectWindow(GSF_AIRPORTS, st->index);
2397 }
2398
2399 return cost;
2400 }
2401
2411 CommandCost CmdOpenCloseAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2412 {
2413 if (!Station::IsValidID(p1)) return CMD_ERROR;
2414 Station *st = Station::Get(p1);
2415
2416 if (!(st->facilities & FACIL_AIRPORT) || st->owner == OWNER_NONE) return CMD_ERROR;
2417
2418 CommandCost ret = CheckOwnership(st->owner);
2419 if (ret.Failed()) return ret;
2420
2421 if (flags & DC_EXEC) {
2422 st->airport.flags ^= AIRPORT_CLOSED_block;
2423 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_CLOSE_AIRPORT);
2424 }
2425 return CommandCost();
2426 }
2427
2434 bool HasStationInUse(StationID station, bool include_company, CompanyID company)
2435 {
2436 const Vehicle *v;
2437 FOR_ALL_VEHICLES(v) {
2438 if ((v->owner == company) == include_company) {
2439 const Order *order;
2440 FOR_VEHICLE_ORDERS(v, order) {
2441 if ((order->IsType(OT_GOTO_STATION) || order->IsType(OT_GOTO_WAYPOINT)) && order->GetDestination() == station) {
2442 return true;
2443 }
2444 }
2445 }
2446 }
2447 return false;
2448 }
2449
2450 static const TileIndexDiffC _dock_tileoffs_chkaround[] = {
2451 {-1, 0},
2452 { 0, 0},
2453 { 0, 0},
2454 { 0, -1}
2455 };
2456 static const byte _dock_w_chk[4] = { 2, 1, 2, 1 };
2457 static const byte _dock_h_chk[4] = { 1, 2, 1, 2 };
2458
2468 CommandCost CmdBuildDock(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2469 {
2470 StationID station_to_join = GB(p2, 16, 16);
2471 bool reuse = (station_to_join != NEW_STATION);
2472 if (!reuse) station_to_join = INVALID_STATION;
2473 bool distant_join = (station_to_join != INVALID_STATION);
2474
2475 if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
2476
2477 DiagDirection direction = GetInclinedSlopeDirection(GetTileSlope(tile));
2478 if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2479 direction = ReverseDiagDir(direction);
2480
2481 /* Docks cannot be placed on rapids */
2482 if (HasTileWaterGround(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2483
2484 CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
2485 if (ret.Failed()) return ret;
2486
2487 if (IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
2488
2489 ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
2490 if (ret.Failed()) return ret;
2491
2492 TileIndex tile_cur = tile + TileOffsByDiagDir(direction);
2493
2494 if (!IsTileType(tile_cur, MP_WATER) || !IsTileFlat(tile_cur)) {
2495 return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2496 }
2497
2498 if (IsBridgeAbove(tile_cur)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
2499
2500 /* Get the water class of the water tile before it is cleared.*/
2501 WaterClass wc = GetWaterClass(tile_cur);
2502
2503 ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
2504 if (ret.Failed()) return ret;
2505
2506 tile_cur += TileOffsByDiagDir(direction);
2507 if (!IsTileType(tile_cur, MP_WATER) || !IsTileFlat(tile_cur)) {
2508 return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2509 }
2510
2511 TileArea dock_area = TileArea(tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
2512 _dock_w_chk[direction], _dock_h_chk[direction]);
2513
2514 /* middle */
2515 Station *st = NULL;
2516 ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p1, 0), dock_area, &st);
2517 if (ret.Failed()) return ret;
2518
2519 /* Distant join */
2520 if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
2521
2522 ret = BuildStationPart(&st, flags, reuse, dock_area, STATIONNAMING_DOCK);
2523 if (ret.Failed()) return ret;
2524
2525 if (st != NULL && st->dock_tile != INVALID_TILE) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_DOCK);
2526
2527 if (flags & DC_EXEC) {
2528 st->dock_tile = tile;
2529 st->AddFacility(FACIL_DOCK, tile);
2530
2531 st->rect.BeforeAddRect(dock_area.tile, dock_area.w, dock_area.h, StationRect::ADD_TRY);
2532
2533 /* If the water part of the dock is on a canal, update infrastructure counts.
2534 * This is needed as we've unconditionally cleared that tile before. */
2535 if (wc == WATER_CLASS_CANAL) {
2536 Company::Get(st->owner)->infrastructure.water++;
2537 }
2538 Company::Get(st->owner)->infrastructure.station += 2;
2539 DirtyCompanyInfrastructureWindows(st->owner);
2540
2541 MakeDock(tile, st->owner, st->index, direction, wc);
2542
2543 st->UpdateVirtCoord();
2544 UpdateStationAcceptance(st, false);
2545 st->RecomputeIndustriesNear();
2546 InvalidateWindowData(WC_SELECT_STATION, 0, 0);
2547 InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
2548 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_SHIPS);
2549 }
2550
2551 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_STATION_DOCK]);
2552 }
2553
2560 static CommandCost RemoveDock(TileIndex tile, DoCommandFlag flags)
2561 {
2562 Station *st = Station::GetByTile(tile);
2563 CommandCost ret = CheckOwnership(st->owner);
2564 if (ret.Failed()) return ret;
2565
2566 TileIndex docking_location = TILE_ADD(st->dock_tile, ToTileIndexDiff(GetDockOffset(st->dock_tile)));
2567
2568 TileIndex tile1 = st->dock_tile;
2569 TileIndex tile2 = tile1 + TileOffsByDiagDir(GetDockDirection(tile1));
2570
2571 ret = EnsureNoVehicleOnGround(tile1);
2572 if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile2);
2573 if (ret.Failed()) return ret;
2574
2575 if (flags & DC_EXEC) {
2576 DoClearSquare(tile1);
2577 MarkTileDirtyByTile(tile1);
2578 MakeWaterKeepingClass(tile2, st->owner);
2579
2580 st->rect.AfterRemoveTile(st, tile1);
2581 st->rect.AfterRemoveTile(st, tile2);
2582
2583 st->dock_tile = INVALID_TILE;
2584 st->facilities &= ~FACIL_DOCK;
2585
2586 Company::Get(st->owner)->infrastructure.station -= 2;
2587 DirtyCompanyInfrastructureWindows(st->owner);
2588
2589 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_SHIPS);
2590 st->UpdateVirtCoord();
2591 st->RecomputeIndustriesNear();
2592 DeleteStationIfEmpty(st);
2593
2594 /* All ships that were going to our station, can't go to it anymore.
2595 * Just clear the order, then automatically the next appropriate order
2596 * will be selected and in case of no appropriate order it will just
2597 * wander around the world. */
2598 Ship *s;
2599 FOR_ALL_SHIPS(s) {
2600 if (s->current_order.IsType(OT_LOADING) && s->tile == docking_location) {
2601 s->LeaveStation();
2602 }
2603
2604 if (s->dest_tile == docking_location) {
2605 s->dest_tile = 0;
2606 s->current_order.Free();
2607 }
2608 }
2609 }
2610
2611 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_STATION_DOCK]);
2612 }
2613
2614 #include "table/station_land.h"
2615
2616 const DrawTileSprites *GetStationTileLayout(StationType st, byte gfx)
2617 {
2618 return &_station_display_datas[st][gfx];
2619 }
2620
2630 bool SplitGroundSpriteForOverlay(const TileInfo *ti, SpriteID *ground, RailTrackOffset *overlay_offset)
2631 {
2632 bool snow_desert;
2633 switch (*ground) {
2634 case SPR_RAIL_TRACK_X:
2635 snow_desert = false;
2636 *overlay_offset = RTO_X;
2637 break;
2638
2639 case SPR_RAIL_TRACK_Y:
2640 snow_desert = false;
2641 *overlay_offset = RTO_Y;
2642 break;
2643
2644 case SPR_RAIL_TRACK_X_SNOW:
2645 snow_desert = true;
2646 *overlay_offset = RTO_X;
2647 break;
2648
2649 case SPR_RAIL_TRACK_Y_SNOW:
2650 snow_desert = true;
2651 *overlay_offset = RTO_Y;
2652 break;
2653
2654 default:
2655 return false;
2656 }
2657
2658 if (ti != NULL) {
2659 /* Decide snow/desert from tile */
2660 switch (_settings_game.game_creation.landscape) {
2661 case LT_ARCTIC:
2662 snow_desert = (uint)ti->z > GetSnowLine() * TILE_HEIGHT;
2663 break;
2664
2665 case LT_TROPIC:
2666 snow_desert = GetTropicZone(ti->tile) == TROPICZONE_DESERT;
2667 break;
2668
2669 default:
2670 break;
2671 }
2672 }
2673
2674 *ground = snow_desert ? SPR_FLAT_SNOW_DESERT_TILE : SPR_FLAT_GRASS_TILE;
2675 return true;
2676 }
2677
2678 static void DrawTile_Station(TileInfo *ti)
2679 {
2680 const NewGRFSpriteLayout *layout = NULL;
2681 DrawTileSprites tmp_rail_layout;
2682 const DrawTileSprites *t = NULL;
2683 RoadTypes roadtypes;
2684 int32 total_offset;
2685 const RailtypeInfo *rti = NULL;
2686 uint32 relocation = 0;
2687 uint32 ground_relocation = 0;
2688 BaseStation *st = NULL;
2689 const StationSpec *statspec = NULL;
2690 uint tile_layout = 0;
2691
2692 if (HasStationRail(ti->tile)) {
2693 rti = GetRailTypeInfo(GetRailType(ti->tile));
2694 roadtypes = ROADTYPES_NONE;
2695 total_offset = rti->GetRailtypeSpriteOffset();
2696
2697 if (IsCustomStationSpecIndex(ti->tile)) {
2698 /* look for customization */
2699 st = BaseStation::GetByTile(ti->tile);
2700 statspec = st->speclist[GetCustomStationSpecIndex(ti->tile)].spec;
2701
2702 if (statspec != NULL) {
2703 tile_layout = GetStationGfx(ti->tile);
2704
2705 if (HasBit(statspec->callback_mask, CBM_STATION_SPRITE_LAYOUT)) {
2706 uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0, 0, statspec, st, ti->tile);
2707 if (callback != CALLBACK_FAILED) tile_layout = (callback & ~1) + GetRailStationAxis(ti->tile);
2708 }
2709
2710 /* Ensure the chosen tile layout is valid for this custom station */
2711 if (statspec->renderdata != NULL) {
2712 layout = &statspec->renderdata[tile_layout < statspec->tiles ? tile_layout : (uint)GetRailStationAxis(ti->tile)];
2713 if (!layout->NeedsPreprocessing()) {
2714 t = layout;
2715 layout = NULL;
2716 }
2717 }
2718 }
2719 }
2720 } else {
2721 roadtypes = IsRoadStop(ti->tile) ? GetRoadTypes(ti->tile) : ROADTYPES_NONE;
2722 total_offset = 0;
2723 }
2724
2725 StationGfx gfx = GetStationGfx(ti->tile);
2726 if (IsAirport(ti->tile)) {
2727 gfx = GetAirportGfx(ti->tile);
2728 if (gfx >= NEW_AIRPORTTILE_OFFSET) {
2729 const AirportTileSpec *ats = AirportTileSpec::Get(gfx);
2730 if (ats->grf_prop.spritegroup[0] != NULL && DrawNewAirportTile(ti, Station::GetByTile(ti->tile), gfx, ats)) {
2731 return;
2732 }
2733 /* No sprite group (or no valid one) found, meaning no graphics associated.
2734 * Use the substitute one instead */
2735 assert(ats->grf_prop.subst_id != INVALID_AIRPORTTILE);
2736 gfx = ats->grf_prop.subst_id;
2737 }
2738 switch (gfx) {
2739 case APT_RADAR_GRASS_FENCE_SW:
2740 t = &_station_display_datas_airport_radar_grass_fence_sw[GetAnimationFrame(ti->tile)];
2741 break;
2742 case APT_GRASS_FENCE_NE_FLAG:
2743 t = &_station_display_datas_airport_flag_grass_fence_ne[GetAnimationFrame(ti->tile)];
2744 break;
2745 case APT_RADAR_FENCE_SW:
2746 t = &_station_display_datas_airport_radar_fence_sw[GetAnimationFrame(ti->tile)];
2747 break;
2748 case APT_RADAR_FENCE_NE:
2749 t = &_station_display_datas_airport_radar_fence_ne[GetAnimationFrame(ti->tile)];
2750 break;
2751 case APT_GRASS_FENCE_NE_FLAG_2:
2752 t = &_station_display_datas_airport_flag_grass_fence_ne_2[GetAnimationFrame(ti->tile)];
2753 break;
2754 }
2755 }
2756
2757 Owner owner = GetTileOwner(ti->tile);
2758
2759 PaletteID palette;
2760 if (Company::IsValidID(owner)) {
2761 palette = COMPANY_SPRITE_COLOUR(owner);
2762 } else {
2763 /* Some stations are not owner by a company, namely oil rigs */
2764 palette = PALETTE_TO_GREY;
2765 }
2766
2767 if (layout == NULL && (t == NULL || t->seq == NULL)) t = GetStationTileLayout(GetStationType(ti->tile), gfx);
2768
2769 /* don't show foundation for docks */
2770 if (ti->tileh != SLOPE_FLAT && !IsDock(ti->tile)) {
2771 if (statspec != NULL && HasBit(statspec->flags, SSF_CUSTOM_FOUNDATIONS)) {
2772 /* Station has custom foundations.
2773 * Check whether the foundation continues beyond the tile's upper sides. */
2774 uint edge_info = 0;
2775 int z;
2776 Slope slope = GetFoundationPixelSlope(ti->tile, &z);
2777 if (!HasFoundationNW(ti->tile, slope, z)) SetBit(edge_info, 0);
2778 if (!HasFoundationNE(ti->tile, slope, z)) SetBit(edge_info, 1);
2779 SpriteID image = GetCustomStationFoundationRelocation(statspec, st, ti->tile, tile_layout, edge_info);
2780 if (image == 0) goto draw_default_foundation;
2781
2782 if (HasBit(statspec->flags, SSF_EXTENDED_FOUNDATIONS)) {
2783 /* Station provides extended foundations. */
2784
2785 static const uint8 foundation_parts[] = {
2786 0, 0, 0, 0, // Invalid, Invalid, Invalid, SLOPE_SW
2787 0, 1, 2, 3, // Invalid, SLOPE_EW, SLOPE_SE, SLOPE_WSE
2788 0, 4, 5, 6, // Invalid, SLOPE_NW, SLOPE_NS, SLOPE_NWS
2789 7, 8, 9 // SLOPE_NE, SLOPE_ENW, SLOPE_SEN
2790 };
2791
2792 AddSortableSpriteToDraw(image + foundation_parts[ti->tileh], PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
2793 } else {
2794 /* Draw simple foundations, built up from 8 possible foundation sprites. */
2795
2796 /* Each set bit represents one of the eight composite sprites to be drawn.
2797 * 'Invalid' entries will not drawn but are included for completeness. */
2798 static const uint8 composite_foundation_parts[] = {
2799 /* Invalid (00000000), Invalid (11010001), Invalid (11100100), SLOPE_SW (11100000) */
2800 0x00, 0xD1, 0xE4, 0xE0,
2801 /* Invalid (11001010), SLOPE_EW (11001001), SLOPE_SE (11000100), SLOPE_WSE (11000000) */
2802 0xCA, 0xC9, 0xC4, 0xC0,
2803 /* Invalid (11010010), SLOPE_NW (10010001), SLOPE_NS (11100100), SLOPE_NWS (10100000) */
2804 0xD2, 0x91, 0xE4, 0xA0,
2805 /* SLOPE_NE (01001010), SLOPE_ENW (00001001), SLOPE_SEN (01000100) */
2806 0x4A, 0x09, 0x44
2807 };
2808
2809 uint8 parts = composite_foundation_parts[ti->tileh];
2810
2811 /* If foundations continue beyond the tile's upper sides then
2812 * mask out the last two pieces. */
2813 if (HasBit(edge_info, 0)) ClrBit(parts, 6);
2814 if (HasBit(edge_info, 1)) ClrBit(parts, 7);
2815
2816 if (parts == 0) {
2817 /* We always have to draw at least one sprite to make sure there is a boundingbox and a sprite with the
2818 * correct offset for the childsprites.
2819 * So, draw the (completely empty) sprite of the default foundations. */
2820 goto draw_default_foundation;
2821 }
2822
2823 StartSpriteCombine();
2824 for (int i = 0; i < 8; i++) {
2825 if (HasBit(parts, i)) {
2826 AddSortableSpriteToDraw(image + i, PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
2827 }
2828 }
2829 EndSpriteCombine();
2830 }
2831
2832 OffsetGroundSprite(31, 1);
2833 ti->z += ApplyPixelFoundationToSlope(FOUNDATION_LEVELED, &ti->tileh);
2834 } else {
2835 draw_default_foundation:
2836 DrawFoundation(ti, FOUNDATION_LEVELED);
2837 }
2838 }
2839
2840 if (IsBuoy(ti->tile)) {
2841 DrawWaterClassGround(ti);
2842 SpriteID sprite = GetCanalSprite(CF_BUOY, ti->tile);
2843 if (sprite != 0) total_offset = sprite - SPR_IMG_BUOY;
2844 } else if (IsDock(ti->tile) || (IsOilRig(ti->tile) && IsTileOnWater(ti->tile))) {
2845 if (ti->tileh == SLOPE_FLAT) {
2846 DrawWaterClassGround(ti);
2847 } else {
2848 assert(IsDock(ti->tile));
2849 TileIndex water_tile = ti->tile + TileOffsByDiagDir(GetDockDirection(ti->tile));
2850 WaterClass wc = GetWaterClass(water_tile);
2851 if (wc == WATER_CLASS_SEA) {
2852 DrawShoreTile(ti->tileh);
2853 } else {
2854 DrawClearLandTile(ti, 3);
2855 }
2856 }
2857 } else {
2858 if (layout != NULL) {
2859 /* Sprite layout which needs preprocessing */
2860 bool separate_ground = HasBit(statspec->flags, SSF_SEPARATE_GROUND);
2861 uint32 var10_values = layout->PrepareLayout(total_offset, rti->fallback_railtype, 0, 0, separate_ground);
2862 uint8 var10;
2863 FOR_EACH_SET_BIT(var10, var10_values) {
2864 uint32 var10_relocation = GetCustomStationRelocation(statspec, st, ti->tile, var10);
2865 layout->ProcessRegisters(var10, var10_relocation, separate_ground);
2866 }
2867 tmp_rail_layout.seq = layout->GetLayout(&tmp_rail_layout.ground);
2868 t = &tmp_rail_layout;
2869 total_offset = 0;
2870 } else if (statspec != NULL) {
2871 /* Simple sprite layout */
2872 ground_relocation = relocation = GetCustomStationRelocation(statspec, st, ti->tile, 0);
2873 if (HasBit(statspec->flags, SSF_SEPARATE_GROUND)) {
2874 ground_relocation = GetCustomStationRelocation(statspec, st, ti->tile, 1);
2875 }
2876 ground_relocation += rti->fallback_railtype;
2877 }
2878
2879 SpriteID image = t->ground.sprite;
2880 PaletteID pal = t->ground.pal;
2881 RailTrackOffset overlay_offset;
2882 if (rti != NULL && rti->UsesOverlay() && SplitGroundSpriteForOverlay(ti, &image, &overlay_offset)) {
2883 SpriteID ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND);
2884 DrawGroundSprite(image, PAL_NONE);
2885 DrawGroundSprite(ground + overlay_offset, PAL_NONE);
2886
2887 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationReservation(ti->tile)) {
2888 SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
2889 DrawGroundSprite(overlay + overlay_offset, PALETTE_CRASH);
2890 }
2891 } else {
2892 image += HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? ground_relocation : total_offset;
2893 if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += ground_relocation;
2894 DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, palette));
2895
2896 /* PBS debugging, draw reserved tracks darker */
2897 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationRail(ti->tile) && HasStationReservation(ti->tile)) {
2898 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
2899 DrawGroundSprite(GetRailStationAxis(ti->tile) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
2900 }
2901 }
2902 }
2903
2904 if (HasStationRail(ti->tile) && HasRailCatenaryDrawn(GetRailType(ti->tile))) DrawRailCatenary(ti);
2905
2906 if (HasBit(roadtypes, ROADTYPE_TRAM)) {
2907 Axis axis = GetRoadStopDir(ti->tile) == DIAGDIR_NE ? AXIS_X : AXIS_Y;
2908 DrawGroundSprite((HasBit(roadtypes, ROADTYPE_ROAD) ? SPR_TRAMWAY_OVERLAY : SPR_TRAMWAY_TRAM) + (axis ^ 1), PAL_NONE);
2909 DrawRoadCatenary(ti, axis == AXIS_X ? ROAD_X : ROAD_Y);
2910 }
2911
2912 if (IsRailWaypoint(ti->tile)) {
2913 /* Don't offset the waypoint graphics; they're always the same. */
2914 total_offset = 0;
2915 }
2916
2917 DrawRailTileSeq(ti, t, TO_BUILDINGS, total_offset, relocation, palette);
2918 }
2919
2920 void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, RoadType roadtype, int image)
2921 {
2922 int32 total_offset = 0;
2923 PaletteID pal = COMPANY_SPRITE_COLOUR(_local_company);
2924 const DrawTileSprites *t = GetStationTileLayout(st, image);
2925 const RailtypeInfo *rti = NULL;
2926
2927 if (railtype != INVALID_RAILTYPE) {
2928 rti = GetRailTypeInfo(railtype);
2929 total_offset = rti->GetRailtypeSpriteOffset();
2930 }
2931
2932 SpriteID img = t->ground.sprite;
2933 RailTrackOffset overlay_offset;
2934 if (rti != NULL && rti->UsesOverlay() && SplitGroundSpriteForOverlay(NULL, &img, &overlay_offset)) {
2935 SpriteID ground = GetCustomRailSprite(rti, INVALID_TILE, RTSG_GROUND);
2936 DrawSprite(img, PAL_NONE, x, y);
2937 DrawSprite(ground + overlay_offset, PAL_NONE, x, y);
2938 } else {
2939 DrawSprite(img + total_offset, HasBit(img, PALETTE_MODIFIER_COLOUR) ? pal : PAL_NONE, x, y);
2940 }
2941
2942 if (roadtype == ROADTYPE_TRAM) {
2943 DrawSprite(SPR_TRAMWAY_TRAM + (t->ground.sprite == SPR_ROAD_PAVED_STRAIGHT_X ? 1 : 0), PAL_NONE, x, y);
2944 }
2945
2946 /* Default waypoint has no railtype specific sprites */
2947 DrawRailTileSeqInGUI(x, y, t, st == STATION_WAYPOINT ? 0 : total_offset, 0, pal);
2948 }
2949
2950 static int GetSlopePixelZ_Station(TileIndex tile, uint x, uint y)
2951 {
2952 return GetTileMaxPixelZ(tile);
2953 }
2954
2955 static Foundation GetFoundation_Station(TileIndex tile, Slope tileh)
2956 {
2957 return FlatteningFoundation(tileh);
2958 }
2959
2960 static void GetTileDesc_Station(TileIndex tile, TileDesc *td)
2961 {
2962 td->owner[0] = GetTileOwner(tile);
2963 if (IsDriveThroughStopTile(tile)) {
2964 Owner road_owner = INVALID_OWNER;
2965 Owner tram_owner = INVALID_OWNER;
2966 RoadTypes rts = GetRoadTypes(tile);
2967 if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
2968 if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
2969
2970 /* Is there a mix of owners? */
2971 if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
2972 (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
2973 uint i = 1;
2974 if (road_owner != INVALID_OWNER) {
2975 td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
2976 td->owner[i] = road_owner;
2977 i++;
2978 }
2979 if (tram_owner != INVALID_OWNER) {
2980 td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
2981 td->owner[i] = tram_owner;
2982 }
2983 }
2984 }
2985 td->build_date = BaseStation::GetByTile(tile)->build_date;
2986
2987 if (HasStationTileRail(tile)) {
2988 const StationSpec *spec = GetStationSpec(tile);
2989
2990 if (spec != NULL) {
2991 td->station_class = StationClass::Get(spec->cls_id)->name;
2992 td->station_name = spec->name;
2993
2994 if (spec->grf_prop.grffile != NULL) {
2995 const GRFConfig *gc = GetGRFConfig(spec->grf_prop.grffile->grfid);
2996 td->grf = gc->GetName();
2997 }
2998 }
2999
3000 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
3001 td->rail_speed = rti->max_speed;
3002 td->railtype = rti->strings.name;
3003 }
3004
3005 if (IsAirport(tile)) {
3006 const AirportSpec *as = Station::GetByTile(tile)->airport.GetSpec();
3007 td->airport_class = AirportClass::Get(as->cls_id)->name;
3008 td->airport_name = as->name;
3009
3010 const AirportTileSpec *ats = AirportTileSpec::GetByTile(tile);
3011 td->airport_tile_name = ats->name;
3012
3013 if (as->grf_prop.grffile != NULL) {
3014 const GRFConfig *gc = GetGRFConfig(as->grf_prop.grffile->grfid);
3015 td->grf = gc->GetName();
3016 } else if (ats->grf_prop.grffile != NULL) {
3017 const GRFConfig *gc = GetGRFConfig(ats->grf_prop.grffile->grfid);
3018 td->grf = gc->GetName();
3019 }
3020 }
3021
3022 StringID str;
3023 switch (GetStationType(tile)) {
3024 default: NOT_REACHED();
3025 case STATION_RAIL: str = STR_LAI_STATION_DESCRIPTION_RAILROAD_STATION; break;
3026 case STATION_AIRPORT:
3027 str = (IsHangar(tile) ? STR_LAI_STATION_DESCRIPTION_AIRCRAFT_HANGAR : STR_LAI_STATION_DESCRIPTION_AIRPORT);
3028 break;
3029 case STATION_TRUCK: str = STR_LAI_STATION_DESCRIPTION_TRUCK_LOADING_AREA; break;
3030 case STATION_BUS: str = STR_LAI_STATION_DESCRIPTION_BUS_STATION; break;
3031 case STATION_OILRIG: str = STR_INDUSTRY_NAME_OIL_RIG; break;
3032 case STATION_DOCK: str = STR_LAI_STATION_DESCRIPTION_SHIP_DOCK; break;
3033 case STATION_BUOY: str = STR_LAI_STATION_DESCRIPTION_BUOY; break;
3034 case STATION_WAYPOINT: str = STR_LAI_STATION_DESCRIPTION_WAYPOINT; break;
3035 }
3036 td->str = str;
3037 }
3038
3039
3040 static TrackStatus GetTileTrackStatus_Station(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
3041 {
3042 TrackBits trackbits = TRACK_BIT_NONE;
3043
3044 switch (mode) {
3045 case TRANSPORT_RAIL:
3046 if (HasStationRail(tile) && !IsStationTileBlocked(tile)) {
3047 trackbits = TrackToTrackBits(GetRailStationTrack(tile));
3048 }
3049 break;
3050
3051 case TRANSPORT_WATER:
3052 /* buoy is coded as a station, it is always on open water */
3053 if (IsBuoy(tile)) {
3054 trackbits = TRACK_BIT_ALL;
3055 /* remove tracks that connect NE map edge */
3056 if (TileX(tile) == 0) trackbits &= ~(TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_RIGHT);
3057 /* remove tracks that connect NW map edge */
3058 if (TileY(tile) == 0) trackbits &= ~(TRACK_BIT_Y | TRACK_BIT_LEFT | TRACK_BIT_UPPER);
3059 }
3060 break;
3061
3062 case TRANSPORT_ROAD:
3063 if ((GetRoadTypes(tile) & sub_mode) != 0 && IsRoadStop(tile)) {
3064 DiagDirection dir = GetRoadStopDir(tile);
3065 Axis axis = DiagDirToAxis(dir);
3066
3067 if (side != INVALID_DIAGDIR) {
3068 if (axis != DiagDirToAxis(side) || (IsStandardRoadStopTile(tile) && dir != side)) break;
3069 }
3070
3071 trackbits = AxisToTrackBits(axis);
3072 }
3073 break;
3074
3075 default:
3076 break;
3077 }
3078
3079 return CombineTrackStatus(TrackBitsToTrackdirBits(trackbits), TRACKDIR_BIT_NONE);
3080 }
3081
3082
3083 static void TileLoop_Station(TileIndex tile)
3084 {
3085 /* FIXME -- GetTileTrackStatus_Station -> animated stationtiles
3086 * hardcoded.....not good */
3087 switch (GetStationType(tile)) {
3088 case STATION_AIRPORT:
3089 AirportTileAnimationTrigger(Station::GetByTile(tile), tile, AAT_TILELOOP);
3090 break;
3091
3092 case STATION_DOCK:
3093 if (!IsTileFlat(tile)) break; // only handle water part
3094 FALLTHROUGH;
3095
3096 case STATION_OILRIG: //(station part)
3097 case STATION_BUOY:
3098 TileLoop_Water(tile);
3099 break;
3100
3101 default: break;
3102 }
3103 }
3104
3105
3106 static void AnimateTile_Station(TileIndex tile)
3107 {
3108 if (HasStationRail(tile)) {
3109 AnimateStationTile(tile);
3110 return;
3111 }
3112
3113 if (IsAirport(tile)) {
3114 AnimateAirportTile(tile);
3115 }
3116 }
3117
3118
3119 static bool ClickTile_Station(TileIndex tile)
3120 {
3121 const BaseStation *bst = BaseStation::GetByTile(tile);
3122
3123 if (bst->facilities & FACIL_WAYPOINT) {
3124 ShowWaypointWindow(Waypoint::From(bst));
3125 } else if (IsHangar(tile)) {
3126 const Station *st = Station::From(bst);
3127 ShowDepotWindow(st->airport.GetHangarTile(st->airport.GetHangarNum(tile)), VEH_AIRCRAFT);
3128 } else {
3129 ShowStationViewWindow(bst->index);
3130 }
3131 return true;
3132 }
3133
3134 static VehicleEnterTileStatus VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
3135 {
3136 if (v->type == VEH_TRAIN) {
3137 StationID station_id = GetStationIndex(tile);
3138 if (!v->current_order.ShouldStopAtStation(v, station_id)) return VETSB_CONTINUE;
3139 if (!IsRailStation(tile) || !v->IsFrontEngine()) return VETSB_CONTINUE;
3140
3141 int station_ahead;
3142 int station_length;
3143 int stop = GetTrainStopLocation(station_id, tile, Train::From(v), &station_ahead, &station_length);
3144
3145 /* Stop whenever that amount of station ahead + the distance from the
3146 * begin of the platform to the stop location is longer than the length
3147 * of the platform. Station ahead 'includes' the current tile where the
3148 * vehicle is on, so we need to subtract that. */
3149 if (stop + station_ahead - (int)TILE_SIZE >= station_length) return VETSB_CONTINUE;
3150
3151 DiagDirection dir = DirToDiagDir(v->direction);
3152
3153 x &= 0xF;
3154 y &= 0xF;
3155
3156 if (DiagDirToAxis(dir) != AXIS_X) Swap(x, y);
3157 if (y == TILE_SIZE / 2) {
3158 if (dir != DIAGDIR_SE && dir != DIAGDIR_SW) x = TILE_SIZE - 1 - x;
3159 stop &= TILE_SIZE - 1;
3160
3161 if (x == stop) {
3162 return VETSB_ENTERED_STATION | (VehicleEnterTileStatus)(station_id << VETS_STATION_ID_OFFSET); // enter station
3163 } else if (x < stop) {
3164 v->vehstatus |= VS_TRAIN_SLOWING;
3165 uint16 spd = max(0, (stop - x) * 20 - 15);
3166 if (spd < v->cur_speed) v->cur_speed = spd;
3167 }
3168 }
3169 } else if (v->type == VEH_ROAD) {
3170 RoadVehicle *rv = RoadVehicle::From(v);
3171 if (rv->state < RVSB_IN_ROAD_STOP && !IsReversingRoadTrackdir((Trackdir)rv->state) && rv->frame == 0) {
3172 if (IsRoadStop(tile) && rv->IsFrontEngine()) {
3173 /* Attempt to allocate a parking bay in a road stop */
3174 return RoadStop::GetByTile(tile, GetRoadStopType(tile))->Enter(rv) ? VETSB_CONTINUE : VETSB_CANNOT_ENTER;
3175 }
3176 }
3177 }
3178
3179 return VETSB_CONTINUE;
3180 }
3181
3186 void TriggerWatchedCargoCallbacks(Station *st)
3187 {
3188 /* Collect cargoes accepted since the last big tick. */
3189 uint cargoes = 0;
3190 for (CargoID cid = 0; cid < NUM_CARGO; cid++) {
3191 if (HasBit(st->goods[cid].status, GoodsEntry::GES_ACCEPTED_BIGTICK)) SetBit(cargoes, cid);
3192 }
3193
3194 /* Anything to do? */
3195 if (cargoes == 0) return;
3196
3197 /* Loop over all houses in the catchment. */
3198 Rect r = st->GetCatchmentRect();
3199 TileArea ta(TileXY(r.left, r.top), TileXY(r.right, r.bottom));
3200 TILE_AREA_LOOP(tile, ta) {
3201 if (IsTileType(tile, MP_HOUSE)) {
3202 WatchedCargoCallback(tile, cargoes);
3203 }
3204 }
3205 }
3206
3213 static bool StationHandleBigTick(BaseStation *st)
3214 {
3215 if (!st->IsInUse()) {
3216 if (++st->delete_ctr >= 8) delete st;
3217 return false;
3218 }
3219
3220 if (Station::IsExpected(st)) {
3221 TriggerWatchedCargoCallbacks(Station::From(st));
3222
3223 for (CargoID i = 0; i < NUM_CARGO; i++) {
3224 ClrBit(Station::From(st)->goods[i].status, GoodsEntry::GES_ACCEPTED_BIGTICK);
3225 }
3226 }
3227
3228
3229 if ((st->facilities & FACIL_WAYPOINT) == 0) UpdateStationAcceptance(Station::From(st), true);
3230
3231 return true;
3232 }
3233
3234 static inline void byte_inc_sat(byte *p)
3235 {
3236 byte b = *p + 1;
3237 if (b != 0) *p = b;
3238 }
3239
3246 static void TruncateCargo(const CargoSpec *cs, GoodsEntry *ge, uint amount = UINT_MAX)
3247 {
3248 /* If truncating also punish the source stations' ratings to
3249 * decrease the flow of incoming cargo. */
3250
3251 StationCargoAmountMap waiting_per_source;
3252 ge->cargo.Truncate(amount, &waiting_per_source);
3253 for (StationCargoAmountMap::iterator i(waiting_per_source.begin()); i != waiting_per_source.end(); ++i) {
3254 Station *source_station = Station::GetIfValid(i->first);
3255 if (source_station == NULL) continue;
3256
3257 GoodsEntry &source_ge = source_station->goods[cs->Index()];
3258 source_ge.max_waiting_cargo = max(source_ge.max_waiting_cargo, i->second);
3259 }
3260 }
3261
3262 static void UpdateStationRating(Station *st)
3263 {
3264 bool waiting_changed = false;
3265
3266 byte_inc_sat(&st->time_since_load);
3267 byte_inc_sat(&st->time_since_unload);
3268
3269 const CargoSpec *cs;
3270 FOR_ALL_CARGOSPECS(cs) {
3271 GoodsEntry *ge = &st->goods[cs->Index()];
3272 /* Slowly increase the rating back to his original level in the case we
3273 * didn't deliver cargo yet to this station. This happens when a bribe
3274 * failed while you didn't moved that cargo yet to a station. */
3275 if (!ge->HasRating() && ge->rating < INITIAL_STATION_RATING) {
3276 ge->rating++;
3277 }
3278
3279 /* Only change the rating if we are moving this cargo */
3280 if (ge->HasRating()) {
3281 byte_inc_sat(&ge->time_since_pickup);
3282 if (ge->time_since_pickup == 255 && _settings_game.order.selectgoods) {
3283 ClrBit(ge->status, GoodsEntry::GES_RATING);
3284 ge->last_speed = 0;
3285 TruncateCargo(cs, ge);
3286 waiting_changed = true;
3287 continue;
3288 }
3289
3290 bool skip = false;
3291 int rating = 0;
3292 uint waiting = ge->cargo.AvailableCount();
3293
3294 /* num_dests is at least 1 if there is any cargo as
3295 * INVALID_STATION is also a destination.
3296 */
3297 uint num_dests = (uint)ge->cargo.Packets()->MapSize();
3298
3299 /* Average amount of cargo per next hop, but prefer solitary stations
3300 * with only one or two next hops. They are allowed to have more
3301 * cargo waiting per next hop.
3302 * With manual cargo distribution waiting_avg = waiting / 2 as then
3303 * INVALID_STATION is the only destination.
3304 */
3305 uint waiting_avg = waiting / (num_dests + 1);
3306
3307 if (HasBit(cs->callback_mask, CBM_CARGO_STATION_RATING_CALC)) {
3308 /* Perform custom station rating. If it succeeds the speed, days in transit and
3309 * waiting cargo ratings must not be executed. */
3310
3311 /* NewGRFs expect last speed to be 0xFF when no vehicle has arrived yet. */
3312 uint last_speed = ge->HasVehicleEverTriedLoading() ? ge->last_speed : 0xFF;
3313
3314 uint32 var18 = min(ge->time_since_pickup, 0xFF) | (min(ge->max_waiting_cargo, 0xFFFF) << 8) | (min(last_speed, 0xFF) << 24);
3315 /* Convert to the 'old' vehicle types */
3316 uint32 var10 = (st->last_vehicle_type == VEH_INVALID) ? 0x0 : (st->last_vehicle_type + 0x10);
3317 uint16 callback = GetCargoCallback(CBID_CARGO_STATION_RATING_CALC, var10, var18, cs);
3318 if (callback != CALLBACK_FAILED) {
3319 skip = true;
3320 rating = GB(callback, 0, 14);
3321
3322 /* Simulate a 15 bit signed value */
3323 if (HasBit(callback, 14)) rating -= 0x4000;
3324 }
3325 }
3326
3327 if (!skip) {
3328 int b = ge->last_speed - 85;
3329 if (b >= 0) rating += b >> 2;
3330
3331 byte waittime = ge->time_since_pickup;
3332 if (st->last_vehicle_type == VEH_SHIP) waittime >>= 2;
3333 (waittime > 21) ||
3334 (rating += 25, waittime > 12) ||
3335 (rating += 25, waittime > 6) ||
3336 (rating += 45, waittime > 3) ||
3337 (rating += 35, true);
3338
3339 (rating -= 90, ge->max_waiting_cargo > 1500) ||
3340 (rating += 55, ge->max_waiting_cargo > 1000) ||
3341 (rating += 35, ge->max_waiting_cargo > 600) ||
3342 (rating += 10, ge->max_waiting_cargo > 300) ||
3343 (rating += 20, ge->max_waiting_cargo > 100) ||
3344 (rating += 10, true);
3345 }
3346
3347 if (Company::IsValidID(st->owner) && HasBit(st->town->statues, st->owner)) rating += 26;
3348
3349 byte age = ge->last_age;
3350 (age >= 3) ||
3351 (rating += 10, age >= 2) ||
3352 (rating += 10, age >= 1) ||
3353 (rating += 13, true);
3354
3355 {
3356 int or_ = ge->rating; // old rating
3357
3358 /* only modify rating in steps of -2, -1, 0, 1 or 2 */
3359 ge->rating = rating = or_ + Clamp(Clamp(rating, 0, 255) - or_, -2, 2);
3360
3361 /* if rating is <= 64 and more than 100 items waiting on average per destination,
3362 * remove some random amount of goods from the station */
3363 if (rating <= 64 && waiting_avg >= 100) {
3364 int dec = Random() & 0x1F;
3365 if (waiting_avg < 200) dec &= 7;
3366 waiting -= (dec + 1) * num_dests;
3367 waiting_changed = true;
3368 }
3369
3370 /* if rating is <= 127 and there are any items waiting, maybe remove some goods. */
3371 if (rating <= 127 && waiting != 0) {
3372 uint32 r = Random();
3373 if (rating <= (int)GB(r, 0, 7)) {
3374 /* Need to have int, otherwise it will just overflow etc. */
3375 waiting = max((int)waiting - (int)((GB(r, 8, 2) - 1) * num_dests), 0);
3376 waiting_changed = true;
3377 }
3378 }
3379
3380 /* At some point we really must cap the cargo. Previously this
3381 * was a strict 4095, but now we'll have a less strict, but
3382 * increasingly aggressive truncation of the amount of cargo. */
3383 static const uint WAITING_CARGO_THRESHOLD = 1 << 12;
3384 static const uint WAITING_CARGO_CUT_FACTOR = 1 << 6;
3385 static const uint MAX_WAITING_CARGO = 1 << 15;
3386
3387 if (waiting > WAITING_CARGO_THRESHOLD) {
3388 uint difference = waiting - WAITING_CARGO_THRESHOLD;
3389 waiting -= (difference / WAITING_CARGO_CUT_FACTOR);
3390
3391 waiting = min(waiting, MAX_WAITING_CARGO);
3392 waiting_changed = true;
3393 }
3394
3395 /* We can't truncate cargo that's already reserved for loading.
3396 * Thus StoredCount() here. */
3397 if (waiting_changed && waiting < ge->cargo.AvailableCount()) {
3398 /* Feed back the exact own waiting cargo at this station for the
3399 * next rating calculation. */
3400 ge->max_waiting_cargo = 0;
3401
3402 TruncateCargo(cs, ge, ge->cargo.AvailableCount() - waiting);
3403 } else {
3404 /* If the average number per next hop is low, be more forgiving. */
3405 ge->max_waiting_cargo = waiting_avg;
3406 }
3407 }
3408 }
3409 }
3410
3411 StationID index = st->index;
3412 if (waiting_changed) {
3413 SetWindowDirty(WC_STATION_VIEW, index); // update whole window
3414 } else {
3415 SetWindowWidgetDirty(WC_STATION_VIEW, index, WID_SV_ACCEPT_RATING_LIST); // update only ratings list
3416 }
3417 }
3418
3427 void RerouteCargo(Station *st, CargoID c, StationID avoid, StationID avoid2)
3428 {
3429 GoodsEntry &ge = st->goods[c];
3430
3431 /* Reroute cargo in station. */
3432 ge.cargo.Reroute(UINT_MAX, &ge.cargo, avoid, avoid2, &ge);
3433
3434 /* Reroute cargo staged to be transfered. */
3435 for (std::list<Vehicle *>::iterator it(st->loading_vehicles.begin()); it != st->loading_vehicles.end(); ++it) {
3436 for (Vehicle *v = *it; v != NULL; v = v->Next()) {
3437 if (v->cargo_type != c) continue;
3438 v->cargo.Reroute(UINT_MAX, &v->cargo, avoid, avoid2, &ge);
3439 }
3440 }
3441 }
3442
3451 void DeleteStaleLinks(Station *from)
3452 {
3453 for (CargoID c = 0; c < NUM_CARGO; ++c) {
3454 const bool auto_distributed = (_settings_game.linkgraph.GetDistributionType(c) != DT_MANUAL);
3455 GoodsEntry &ge = from->goods[c];
3456 LinkGraph *lg = LinkGraph::GetIfValid(ge.link_graph);
3457 if (lg == NULL) continue;
3458 Node node = (*lg)[ge.node];
3459 for (EdgeIterator it(node.Begin()); it != node.End();) {
3460 Edge edge = it->second;
3461 Station *to = Station::Get((*lg)[it->first].Station());
3462 assert(to->goods[c].node == it->first);
3463 ++it; // Do that before removing the edge. Anything else may crash.
3464 assert(_date >= edge.LastUpdate());
3465 uint timeout = LinkGraph::MIN_TIMEOUT_DISTANCE + (DistanceManhattan(from->xy, to->xy) >> 3);
3466 if ((uint)(_date - edge.LastUpdate()) > timeout) {
3467 bool updated = false;
3468
3469 if (auto_distributed) {
3470 /* Have all vehicles refresh their next hops before deciding to
3471 * remove the node. */
3472 OrderList *l;
3473 SmallVector<Vehicle *, 32> vehicles;
3474 FOR_ALL_ORDER_LISTS(l) {
3475 bool found_from = false;
3476 bool found_to = false;
3477 for (Order *order = l->GetFirstOrder(); order != NULL; order = order->next) {
3478 if (!order->IsType(OT_GOTO_STATION) && !order->IsType(OT_IMPLICIT)) continue;
3479 if (order->GetDestination() == from->index) {
3480 found_from = true;
3481 if (found_to) break;
3482 } else if (order->GetDestination() == to->index) {
3483 found_to = true;
3484 if (found_from) break;
3485 }
3486 }
3487 if (!found_to || !found_from) continue;
3488 *(vehicles.Append()) = l->GetFirstSharedVehicle();
3489 }
3490
3491 Vehicle **iter = vehicles.Begin();
3492 while (iter != vehicles.End()) {
3493 Vehicle *v = *iter;
3494
3495 LinkRefresher::Run(v, false); // Don't allow merging. Otherwise lg might get deleted.
3496 if (edge.LastUpdate() == _date) {
3497 updated = true;
3498 break;
3499 }
3500
3501 Vehicle *next_shared = v->NextShared();
3502 if (next_shared) {
3503 *iter = next_shared;
3504 ++iter;
3505 } else {
3506 vehicles.Erase(iter);
3507 }
3508
3509 if (iter == vehicles.End()) iter = vehicles.Begin();
3510 }
3511 }
3512
3513 if (!updated) {
3514 /* If it's still considered dead remove it. */
3515 node.RemoveEdge(to->goods[c].node);
3516 ge.flows.DeleteFlows(to->index);
3517 RerouteCargo(from, c, to->index, from->index);
3518 }
3519 } else if (edge.LastUnrestrictedUpdate() != INVALID_DATE && (uint)(_date - edge.LastUnrestrictedUpdate()) > timeout) {
3520 edge.Restrict();
3521 ge.flows.RestrictFlows(to->index);
3522 RerouteCargo(from, c, to->index, from->index);
3523 } else if (edge.LastRestrictedUpdate() != INVALID_DATE && (uint)(_date - edge.LastRestrictedUpdate()) > timeout) {
3524 edge.Release();
3525 }
3526 }
3527 assert(_date >= lg->LastCompression());
3528 if ((uint)(_date - lg->LastCompression()) > LinkGraph::COMPRESSION_INTERVAL) {
3529 lg->Compress();
3530 }
3531 }
3532 }
3533
3543 void IncreaseStats(Station *st, CargoID cargo, StationID next_station_id, uint capacity, uint usage, EdgeUpdateMode mode)
3544 {
3545 GoodsEntry &ge1 = st->goods[cargo];
3546 Station *st2 = Station::Get(next_station_id);
3547 GoodsEntry &ge2 = st2->goods[cargo];
3548 LinkGraph *lg = NULL;
3549 if (ge1.link_graph == INVALID_LINK_GRAPH) {
3550 if (ge2.link_graph == INVALID_LINK_GRAPH) {
3551 if (LinkGraph::CanAllocateItem()) {
3552 lg = new LinkGraph(cargo);
3553 LinkGraphSchedule::instance.Queue(lg);
3554 ge2.link_graph = lg->index;
3555 ge2.node = lg->AddNode(st2);
3556 } else {
3557 DEBUG(misc, 0, "Can't allocate link graph");
3558 }
3559 } else {
3560 lg = LinkGraph::Get(ge2.link_graph);
3561 }
3562 if (lg) {
3563 ge1.link_graph = lg->index;
3564 ge1.node = lg->AddNode(st);
3565 }
3566 } else if (ge2.link_graph == INVALID_LINK_GRAPH) {
3567 lg = LinkGraph::Get(ge1.link_graph);
3568 ge2.link_graph = lg->index;
3569 ge2.node = lg->AddNode(st2);
3570 } else {
3571 lg = LinkGraph::Get(ge1.link_graph);
3572 if (ge1.link_graph != ge2.link_graph) {
3573 LinkGraph *lg2 = LinkGraph::Get(ge2.link_graph);
3574 if (lg->Size() < lg2->Size()) {
3575 LinkGraphSchedule::instance.Unqueue(lg);
3576 lg2->Merge(lg); // Updates GoodsEntries of lg
3577 lg = lg2;
3578 } else {
3579 LinkGraphSchedule::instance.Unqueue(lg2);
3580 lg->Merge(lg2); // Updates GoodsEntries of lg2
3581 }
3582 }
3583 }
3584 if (lg != NULL) {
3585 (*lg)[ge1.node].UpdateEdge(ge2.node, capacity, usage, mode);
3586 }
3587 }
3588
3595 void IncreaseStats(Station *st, const Vehicle *front, StationID next_station_id)
3596 {
3597 for (const Vehicle *v = front; v != NULL; v = v->Next()) {
3598 if (v->refit_cap > 0) {
3599 /* The cargo count can indeed be higher than the refit_cap if
3600 * wagons have been auto-replaced and subsequently auto-
3601 * refitted to a higher capacity. The cargo gets redistributed
3602 * among the wagons in that case.
3603 * As usage is not such an important figure anyway we just
3604 * ignore the additional cargo then.*/
3605 IncreaseStats(st, v->cargo_type, next_station_id, v->refit_cap,
3606 min(v->refit_cap, v->cargo.StoredCount()), EUM_INCREASE);
3607 }
3608 }
3609 }
3610
3611 /* called for every station each tick */
3612 static void StationHandleSmallTick(BaseStation *st)
3613 {
3614 if ((st->facilities & FACIL_WAYPOINT) != 0 || !st->IsInUse()) return;
3615
3616 byte b = st->delete_ctr + 1;
3617 if (b >= STATION_RATING_TICKS) b = 0;
3618 st->delete_ctr = b;
3619
3620 if (b == 0) UpdateStationRating(Station::From(st));
3621 }
3622
3623 void OnTick_Station()
3624 {
3625 if (_game_mode == GM_EDITOR) return;
3626
3627 BaseStation *st;
3628 FOR_ALL_BASE_STATIONS(st) {
3629 StationHandleSmallTick(st);
3630
3631 /* Clean up the link graph about once a week. */
3632 if (Station::IsExpected(st) && (_tick_counter + st->index) % STATION_LINKGRAPH_TICKS == 0) {
3633 DeleteStaleLinks(Station::From(st));
3634 };
3635
3636 /* Run STATION_ACCEPTANCE_TICKS = 250 tick interval trigger for station animation.
3637 * Station index is included so that triggers are not all done
3638 * at the same time. */
3639 if ((_tick_counter + st->index) % STATION_ACCEPTANCE_TICKS == 0) {
3640 /* Stop processing this station if it was deleted */
3641 if (!StationHandleBigTick(st)) continue;
3642 TriggerStationAnimation(st, st->xy, SAT_250_TICKS);
3643 if (Station::IsExpected(st)) AirportAnimationTrigger(Station::From(st), AAT_STATION_250_TICKS);
3644 }
3645 }
3646 }
3647
3649 void StationMonthlyLoop()
3650 {
3651 Station *st;
3652
3653 FOR_ALL_STATIONS(st) {
3654 for (CargoID i = 0; i < NUM_CARGO; i++) {
3655 GoodsEntry *ge = &st->goods[i];
3656 SB(ge->status, GoodsEntry::GES_LAST_MONTH, 1, GB(ge->status, GoodsEntry::GES_CURRENT_MONTH, 1));
3657 ClrBit(ge->status, GoodsEntry::GES_CURRENT_MONTH);
3658 }
3659 }
3660 }
3661
3662
3663 void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint radius)
3664 {
3665 Station *st;
3666
3667 FOR_ALL_STATIONS(st) {
3668 if (st->owner == owner &&
3669 DistanceManhattan(tile, st->xy) <= radius) {
3670 for (CargoID i = 0; i < NUM_CARGO; i++) {
3671 GoodsEntry *ge = &st->goods[i];
3672
3673 if (ge->status != 0) {
3674 ge->rating = Clamp(ge->rating + amount, 0, 255);
3675 }
3676 }
3677 }
3678 }
3679 }
3680
3681 static uint UpdateStationWaiting(Station *st, CargoID type, uint amount, SourceType source_type, SourceID source_id)
3682 {
3683 /* We can't allocate a CargoPacket? Then don't do anything
3684 * at all; i.e. just discard the incoming cargo. */
3685 if (!CargoPacket::CanAllocateItem()) return 0;
3686
3687 GoodsEntry &ge = st->goods[type];
3688 amount += ge.amount_fract;
3689 ge.amount_fract = GB(amount, 0, 8);
3690
3691 amount >>= 8;
3692 /* No new "real" cargo item yet. */
3693 if (amount == 0) return 0;
3694
3695 StationID next = ge.GetVia(st->index);
3696 ge.cargo.Append(new CargoPacket(st->index, st->xy, amount, source_type, source_id), next);
3697 LinkGraph *lg = NULL;
3698 if (ge.link_graph == INVALID_LINK_GRAPH) {
3699 if (LinkGraph::CanAllocateItem()) {
3700 lg = new LinkGraph(type);
3701 LinkGraphSchedule::instance.Queue(lg);
3702 ge.link_graph = lg->index;
3703 ge.node = lg->AddNode(st);
3704 } else {
3705 DEBUG(misc, 0, "Can't allocate link graph");
3706 }
3707 } else {
3708 lg = LinkGraph::Get(ge.link_graph);
3709 }
3710 if (lg != NULL) (*lg)[ge.node].UpdateSupply(amount);
3711
3712 if (!ge.HasRating()) {
3713 InvalidateWindowData(WC_STATION_LIST, st->index);
3714 SetBit(ge.status, GoodsEntry::GES_RATING);
3715 }
3716
3717 TriggerStationRandomisation(st, st->xy, SRT_NEW_CARGO, type);
3718 TriggerStationAnimation(st, st->xy, SAT_NEW_CARGO, type);
3719 AirportAnimationTrigger(st, AAT_STATION_NEW_CARGO, type);
3720
3721 SetWindowDirty(WC_STATION_VIEW, st->index);
3722 st->MarkTilesDirty(true);
3723 return amount;
3724 }
3725
3726 static bool IsUniqueStationName(const char *name)
3727 {
3728 const Station *st;
3729
3730 FOR_ALL_STATIONS(st) {
3731 if (st->name != NULL && strcmp(st->name, name) == 0) return false;
3732 }
3733
3734 return true;
3735 }
3736
3746 CommandCost CmdRenameStation(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
3747 {
3748 Station *st = Station::GetIfValid(p1);
3749 if (st == NULL) return CMD_ERROR;
3750
3751 CommandCost ret = CheckOwnership(st->owner);
3752 if (ret.Failed()) return ret;
3753
3754 bool reset = StrEmpty(text);
3755
3756 if (!reset) {
3757 if (Utf8StringLength(text) >= MAX_LENGTH_STATION_NAME_CHARS) return CMD_ERROR;
3758 if (!IsUniqueStationName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
3759 }
3760
3761 if (flags & DC_EXEC) {
3762 free(st->name);
3763 st->name = reset ? NULL : stredup(text);
3764
3765 st->UpdateVirtCoord();
3766 InvalidateWindowData(WC_STATION_LIST, st->owner, 1);
3767 }
3768
3769 return CommandCost();
3770 }
3771
3778 void FindStationsAroundTiles(const TileArea &location, StationList *stations)
3779 {
3780 /* area to search = producer plus station catchment radius */
3781 uint max_rad = (_settings_game.station.modified_catchment ? MAX_CATCHMENT : CA_UNMODIFIED);
3782
3783 uint x = TileX(location.tile);
3784 uint y = TileY(location.tile);
3785
3786 uint min_x = (x > max_rad) ? x - max_rad : 0;
3787 uint max_x = x + location.w + max_rad;
3788 uint min_y = (y > max_rad) ? y - max_rad : 0;
3789 uint max_y = y + location.h + max_rad;
3790
3791 if (min_x == 0 && _settings_game.construction.freeform_edges) min_x = 1;
3792 if (min_y == 0 && _settings_game.construction.freeform_edges) min_y = 1;
3793 if (max_x >= MapSizeX()) max_x = MapSizeX() - 1;
3794 if (max_y >= MapSizeY()) max_y = MapSizeY() - 1;
3795
3796 for (uint cy = min_y; cy < max_y; cy++) {
3797 for (uint cx = min_x; cx < max_x; cx++) {
3798 TileIndex cur_tile = TileXY(cx, cy);
3799 if (!IsTileType(cur_tile, MP_STATION)) continue;
3800
3801 Station *st = Station::GetByTile(cur_tile);
3802 /* st can be NULL in case of waypoints */
3803 if (st == NULL) continue;
3804
3805 if (_settings_game.station.modified_catchment) {
3806 int rad = st->GetCatchmentRadius();
3807 int rad_x = cx - x;
3808 int rad_y = cy - y;
3809
3810 if (rad_x < -rad || rad_x >= rad + location.w) continue;
3811 if (rad_y < -rad || rad_y >= rad + location.h) continue;
3812 }
3813
3814 /* Insert the station in the set. This will fail if it has
3815 * already been added.
3816 */
3817 stations->Include(st);
3818 }
3819 }
3820 }
3821
3826 const StationList *StationFinder::GetStations()
3827 {
3828 if (this->tile != INVALID_TILE) {
3829 FindStationsAroundTiles(*this, &this->stations);
3830 this->tile = INVALID_TILE;
3831 }
3832 return &this->stations;
3833 }
3834
3835 uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations)
3836 {
3837 /* Return if nothing to do. Also the rounding below fails for 0. */
3838 if (amount == 0) return 0;
3839
3840 Station *st1 = NULL; // Station with best rating
3841 Station *st2 = NULL; // Second best station
3842 uint best_rating1 = 0; // rating of st1
3843 uint best_rating2 = 0; // rating of st2
3844
3845 for (Station * const *st_iter = all_stations->Begin(); st_iter != all_stations->End(); ++st_iter) {
3846 Station *st = *st_iter;
3847
3848 /* Is the station reserved exclusively for somebody else? */
3849 if (st->town->exclusive_counter > 0 && st->town->exclusivity != st->owner) continue;
3850
3851 if (st->goods[type].rating == 0) continue; // Lowest possible rating, better not to give cargo anymore
3852
3853 if (_settings_game.order.selectgoods && !st->goods[type].HasVehicleEverTriedLoading()) continue; // Selectively servicing stations, and not this one
3854
3855 if (IsCargoInClass(type, CC_PASSENGERS)) {
3856 if (st->facilities == FACIL_TRUCK_STOP) continue; // passengers are never served by just a truck stop
3857 } else {
3858 if (st->facilities == FACIL_BUS_STOP) continue; // non-passengers are never served by just a bus stop
3859 }
3860
3861 /* This station can be used, add it to st1/st2 */
3862 if (st1 == NULL || st->goods[type].rating >= best_rating1) {
3863 st2 = st1; best_rating2 = best_rating1; st1 = st; best_rating1 = st->goods[type].rating;
3864 } else if (st2 == NULL || st->goods[type].rating >= best_rating2) {
3865 st2 = st; best_rating2 = st->goods[type].rating;
3866 }
3867 }
3868
3869 /* no stations around at all? */
3870 if (st1 == NULL) return 0;
3871
3872 /* From now we'll calculate with fractal cargo amounts.
3873 * First determine how much cargo we really have. */
3874 amount *= best_rating1 + 1;
3875
3876 if (st2 == NULL) {
3877 /* only one station around */
3878 return UpdateStationWaiting(st1, type, amount, source_type, source_id);
3879 }
3880
3881 /* several stations around, the best two (highest rating) are in st1 and st2 */
3882 assert(st1 != NULL);
3883 assert(st2 != NULL);
3884 assert(best_rating1 != 0 || best_rating2 != 0);
3885
3886 /* Then determine the amount the worst station gets. We do it this way as the
3887 * best should get a bonus, which in this case is the rounding difference from
3888 * this calculation. In reality that will mean the bonus will be pretty low.
3889 * Nevertheless, the best station should always get the most cargo regardless
3890 * of rounding issues. */
3891 uint worst_cargo = amount * best_rating2 / (best_rating1 + best_rating2);
3892 assert(worst_cargo <= (amount - worst_cargo));
3893
3894 /* And then send the cargo to the stations! */
3895 uint moved = UpdateStationWaiting(st1, type, amount - worst_cargo, source_type, source_id);
3896 /* These two UpdateStationWaiting's can't be in the statement as then the order
3897 * of execution would be undefined and that could cause desyncs with callbacks. */
3898 return moved + UpdateStationWaiting(st2, type, worst_cargo, source_type, source_id);
3899 }
3900
3901 void BuildOilRig(TileIndex tile)
3902 {
3903 if (!Station::CanAllocateItem()) {
3904 DEBUG(misc, 0, "Can't allocate station for oilrig at 0x%X, reverting to oilrig only", tile);
3905 return;
3906 }
3907
3908 Station *st = new Station(tile);
3909 st->town = ClosestTownFromTile(tile, UINT_MAX);
3910
3911 st->string_id = GenerateStationName(st, tile, STATIONNAMING_OILRIG);
3912
3913 assert(IsTileType(tile, MP_INDUSTRY));
3914 DeleteAnimatedTile(tile);
3915 MakeOilrig(tile, st->index, GetWaterClass(tile));
3916
3917 st->owner = OWNER_NONE;
3918 st->airport.type = AT_OILRIG;
3919 st->airport.Add(tile);
3920 st->dock_tile = tile;
3921 st->facilities = FACIL_AIRPORT | FACIL_DOCK;
3922 st->build_date = _date;
3923
3924 st->rect.BeforeAddTile(tile, StationRect::ADD_FORCE);
3925
3926 st->UpdateVirtCoord();
3927 UpdateStationAcceptance(st, false);
3928 st->RecomputeIndustriesNear();
3929 }
3930
3931 void DeleteOilRig(TileIndex tile)
3932 {
3933 Station *st = Station::GetByTile(tile);
3934
3935 MakeWaterKeepingClass(tile, OWNER_NONE);
3936
3937 st->dock_tile = INVALID_TILE;
3938 st->airport.Clear();
3939 st->facilities &= ~(FACIL_AIRPORT | FACIL_DOCK);
3940 st->airport.flags = 0;
3941
3942 st->rect.AfterRemoveTile(st, tile);
3943
3944 st->UpdateVirtCoord();
3945 st->RecomputeIndustriesNear();
3946 if (!st->IsInUse()) delete st;
3947 }
3948
3949 static void ChangeTileOwner_Station(TileIndex tile, Owner old_owner, Owner new_owner)
3950 {
3951 if (IsRoadStopTile(tile)) {
3952 for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
3953 /* Update all roadtypes, no matter if they are present */
3954 if (GetRoadOwner(tile, rt) == old_owner) {
3955 if (HasTileRoadType(tile, rt)) {
3956 /* A drive-through road-stop has always two road bits. No need to dirty windows here, we'll redraw the whole screen anyway. */
3957 Company::Get(old_owner)->infrastructure.road[rt] -= 2;
3958 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.road[rt] += 2;
3959 }
3960 SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
3961 }
3962 }
3963 }
3964
3965 if (!IsTileOwner(tile, old_owner)) return;
3966
3967 if (new_owner != INVALID_OWNER) {
3968 /* Update company infrastructure counts. Only do it here
3969 * if the new owner is valid as otherwise the clear
3970 * command will do it for us. No need to dirty windows
3971 * here, we'll redraw the whole screen anyway.*/
3972 Company *old_company = Company::Get(old_owner);
3973 Company *new_company = Company::Get(new_owner);
3974
3975 /* Update counts for underlying infrastructure. */
3976 switch (GetStationType(tile)) {
3977 case STATION_RAIL:
3978 case STATION_WAYPOINT:
3979 if (!IsStationTileBlocked(tile)) {
3980 old_company->infrastructure.rail[GetRailType(tile)]--;
3981 new_company->infrastructure.rail[GetRailType(tile)]++;
3982 }
3983 break;
3984
3985 case STATION_BUS:
3986 case STATION_TRUCK:
3987 /* Road stops were already handled above. */
3988 break;
3989
3990 case STATION_BUOY:
3991 case STATION_DOCK:
3992 if (GetWaterClass(tile) == WATER_CLASS_CANAL) {
3993 old_company->infrastructure.water--;
3994 new_company->infrastructure.water++;
3995 }
3996 break;
3997
3998 default:
3999 break;
4000 }
4001
4002 /* Update station tile count. */
4003 if (!IsBuoy(tile) && !IsAirport(tile)) {
4004 old_company->infrastructure.station--;
4005 new_company->infrastructure.station++;
4006 }
4007
4008 /* for buoys, owner of tile is owner of water, st->owner == OWNER_NONE */
4009 SetTileOwner(tile, new_owner);
4010 InvalidateWindowClassesData(WC_STATION_LIST, 0);
4011 } else {
4012 if (IsDriveThroughStopTile(tile)) {
4013 /* Remove the drive-through road stop */
4014 DoCommand(tile, 1 | 1 << 8, (GetStationType(tile) == STATION_TRUCK) ? ROADSTOP_TRUCK : ROADSTOP_BUS, DC_EXEC | DC_BANKRUPT, CMD_REMOVE_ROAD_STOP);
4015 assert(IsTileType(tile, MP_ROAD));
4016 /* Change owner of tile and all roadtypes */
4017 ChangeTileOwner(tile, old_owner, new_owner);
4018 } else {
4019 DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
4020 /* Set tile owner of water under (now removed) buoy and dock to OWNER_NONE.
4021 * Update owner of buoy if it was not removed (was in orders).
4022 * Do not update when owned by OWNER_WATER (sea and rivers). */
4023 if ((IsTileType(tile, MP_WATER) || IsBuoyTile(tile)) && IsTileOwner(tile, old_owner)) SetTileOwner(tile, OWNER_NONE);
4024 }
4025 }
4026 }
4027
4036 static bool CanRemoveRoadWithStop(TileIndex tile, DoCommandFlag flags)
4037 {
4038 /* Yeah... water can always remove stops, right? */
4039 if (_current_company == OWNER_WATER) return true;
4040
4041 RoadTypes rts = GetRoadTypes(tile);
4042 if (HasBit(rts, ROADTYPE_TRAM)) {
4043 Owner tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
4044 if (tram_owner != OWNER_NONE && CheckOwnership(tram_owner).Failed()) return false;
4045 }
4046 if (HasBit(rts, ROADTYPE_ROAD)) {
4047 Owner road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
4048 if (road_owner != OWNER_TOWN) {
4049 if (road_owner != OWNER_NONE && CheckOwnership(road_owner).Failed()) return false;
4050 } else {
4051 if (CheckAllowRemoveRoad(tile, GetAnyRoadBits(tile, ROADTYPE_ROAD), OWNER_TOWN, ROADTYPE_ROAD, flags).Failed()) return false;
4052 }
4053 }
4054
4055 return true;
4056 }
4057
4064 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags)
4065 {
4066 if (flags & DC_AUTO) {
4067 switch (GetStationType(tile)) {
4068 default: break;
4069 case STATION_RAIL: return_cmd_error(STR_ERROR_MUST_DEMOLISH_RAILROAD);
4070 case STATION_WAYPOINT: return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
4071 case STATION_AIRPORT: return_cmd_error(STR_ERROR_MUST_DEMOLISH_AIRPORT_FIRST);
4072 case STATION_TRUCK: return_cmd_error(HasTileRoadType(tile, ROADTYPE_TRAM) ? STR_ERROR_MUST_DEMOLISH_CARGO_TRAM_STATION_FIRST : STR_ERROR_MUST_DEMOLISH_TRUCK_STATION_FIRST);
4073 case STATION_BUS: return_cmd_error(HasTileRoadType(tile, ROADTYPE_TRAM) ? STR_ERROR_MUST_DEMOLISH_PASSENGER_TRAM_STATION_FIRST : STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST);
4074 case STATION_BUOY: return_cmd_error(STR_ERROR_BUOY_IN_THE_WAY);
4075 case STATION_DOCK: return_cmd_error(STR_ERROR_MUST_DEMOLISH_DOCK_FIRST);
4076 case STATION_OILRIG:
4077 SetDParam(1, STR_INDUSTRY_NAME_OIL_RIG);
4078 return_cmd_error(STR_ERROR_GENERIC_OBJECT_IN_THE_WAY);
4079 }
4080 }
4081
4082 switch (GetStationType(tile)) {
4083 case STATION_RAIL: return RemoveRailStation(tile, flags);
4084 case STATION_WAYPOINT: return RemoveRailWaypoint(tile, flags);
4085 case STATION_AIRPORT: return RemoveAirport(tile, flags);
4086 case STATION_TRUCK:
4087 if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
4088 return_cmd_error(STR_ERROR_MUST_DEMOLISH_TRUCK_STATION_FIRST);
4089 }
4090 return RemoveRoadStop(tile, flags);
4091 case STATION_BUS:
4092 if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
4093 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST);
4094 }
4095 return RemoveRoadStop(tile, flags);
4096 case STATION_BUOY: return RemoveBuoy(tile, flags);
4097 case STATION_DOCK: return RemoveDock(tile, flags);
4098 default: break;
4099 }
4100
4101 return CMD_ERROR;
4102 }
4103
4104 static CommandCost TerraformTile_Station(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
4105 {
4106 if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
4107 /* TODO: If you implement newgrf callback 149 'land slope check', you have to decide what to do with it here.
4108 * TTDP does not call it.
4109 */
4110 if (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new)) {
4111 switch (GetStationType(tile)) {
4112 case STATION_WAYPOINT:
4113 case STATION_RAIL: {
4114 DiagDirection direction = AxisToDiagDir(GetRailStationAxis(tile));
4115 if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
4116 if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
4117 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
4118 }
4119
4120 case STATION_AIRPORT:
4121 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
4122
4123 case STATION_TRUCK:
4124 case STATION_BUS: {
4125 DiagDirection direction = GetRoadStopDir(tile);
4126 if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
4127 if (IsDriveThroughStopTile(tile)) {
4128 if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
4129 }
4130 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
4131 }
4132
4133 default: break;
4134 }
4135 }
4136 }
4137 return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
4138 }
4139
4145 uint FlowStat::GetShare(StationID st) const
4146 {
4147 uint32 prev = 0;
4148 for (SharesMap::const_iterator it = this->shares.begin(); it != this->shares.end(); ++it) {
4149 if (it->second == st) {
4150 return it->first - prev;
4151 } else {
4152 prev = it->first;
4153 }
4154 }
4155 return 0;
4156 }
4157
4164 StationID FlowStat::GetVia(StationID excluded, StationID excluded2) const
4165 {
4166 if (this->unrestricted == 0) return INVALID_STATION;
4167 assert(!this->shares.empty());
4168 SharesMap::const_iterator it = this->shares.upper_bound(RandomRange(this->unrestricted));
4169 assert(it != this->shares.end() && it->first <= this->unrestricted);
4170 if (it->second != excluded && it->second != excluded2) return it->second;
4171
4172 /* We've hit one of the excluded stations.
4173 * Draw another share, from outside its range. */
4174
4175 uint end = it->first;
4176 uint begin = (it == this->shares.begin() ? 0 : (--it)->first);
4177 uint interval = end - begin;
4178 if (interval >= this->unrestricted) return INVALID_STATION; // Only one station in the map.
4179 uint new_max = this->unrestricted - interval;
4180 uint rand = RandomRange(new_max);
4181 SharesMap::const_iterator it2 = (rand < begin) ? this->shares.upper_bound(rand) :
4182 this->shares.upper_bound(rand + interval);
4183 assert(it2 != this->shares.end() && it2->first <= this->unrestricted);
4184 if (it2->second != excluded && it2->second != excluded2) return it2->second;
4185
4186 /* We've hit the second excluded station.
4187 * Same as before, only a bit more complicated. */
4188
4189 uint end2 = it2->first;
4190 uint begin2 = (it2 == this->shares.begin() ? 0 : (--it2)->first);
4191 uint interval2 = end2 - begin2;
4192 if (interval2 >= new_max) return INVALID_STATION; // Only the two excluded stations in the map.
4193 new_max -= interval2;
4194 if (begin > begin2) {
4195 Swap(begin, begin2);
4196 Swap(end, end2);
4197 Swap(interval, interval2);
4198 }
4199 rand = RandomRange(new_max);
4200 SharesMap::const_iterator it3 = this->shares.upper_bound(this->unrestricted);
4201 if (rand < begin) {
4202 it3 = this->shares.upper_bound(rand);
4203 } else if (rand < begin2 - interval) {
4204 it3 = this->shares.upper_bound(rand + interval);
4205 } else {
4206 it3 = this->shares.upper_bound(rand + interval + interval2);
4207 }
4208 assert(it3 != this->shares.end() && it3->first <= this->unrestricted);
4209 return it3->second;
4210 }
4211
4217 void FlowStat::Invalidate()
4218 {
4219 assert(!this->shares.empty());
4220 SharesMap new_shares;
4221 uint i = 0;
4222 for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4223 new_shares[++i] = it->second;
4224 if (it->first == this->unrestricted) this->unrestricted = i;
4225 }
4226 this->shares.swap(new_shares);
4227 assert(!this->shares.empty() && this->unrestricted <= (--this->shares.end())->first);
4228 }
4229
4236 void FlowStat::ChangeShare(StationID st, int flow)
4237 {
4238 /* We assert only before changing as afterwards the shares can actually
4239 * be empty. In that case the whole flow stat must be deleted then. */
4240 assert(!this->shares.empty());
4241
4242 uint removed_shares = 0;
4243 uint added_shares = 0;
4244 uint last_share = 0;
4245 SharesMap new_shares;
4246 for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4247 if (it->second == st) {
4248 if (flow < 0) {
4249 uint share = it->first - last_share;
4250 if (flow == INT_MIN || (uint)(-flow) >= share) {
4251 removed_shares += share;
4252 if (it->first <= this->unrestricted) this->unrestricted -= share;
4253 if (flow != INT_MIN) flow += share;
4254 last_share = it->first;
4255 continue; // remove the whole share
4256 }
4257 removed_shares += (uint)(-flow);
4258 } else {
4259 added_shares += (uint)(flow);
4260 }
4261 if (it->first <= this->unrestricted) this->unrestricted += flow;
4262
4263 /* If we don't continue above the whole flow has been added or
4264 * removed. */
4265 flow = 0;
4266 }
4267 new_shares[it->first + added_shares - removed_shares] = it->second;
4268 last_share = it->first;
4269 }
4270 if (flow > 0) {
4271 new_shares[last_share + (uint)flow] = st;
4272 if (this->unrestricted < last_share) {
4273 this->ReleaseShare(st);
4274 } else {
4275 this->unrestricted += flow;
4276 }
4277 }
4278 this->shares.swap(new_shares);
4279 }
4280
4286 void FlowStat::RestrictShare(StationID st)
4287 {
4288 assert(!this->shares.empty());
4289 uint flow = 0;
4290 uint last_share = 0;
4291 SharesMap new_shares;
4292 for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4293 if (flow == 0) {
4294 if (it->first > this->unrestricted) return; // Not present or already restricted.
4295 if (it->second == st) {
4296 flow = it->first - last_share;
4297 this->unrestricted -= flow;
4298 } else {
4299 new_shares[it->first] = it->second;
4300 }
4301 } else {
4302 new_shares[it->first - flow] = it->second;
4303 }
4304 last_share = it->first;
4305 }
4306 if (flow == 0) return;
4307 new_shares[last_share + flow] = st;
4308 this->shares.swap(new_shares);
4309 assert(!this->shares.empty());
4310 }
4311
4317 void FlowStat::ReleaseShare(StationID st)
4318 {
4319 assert(!this->shares.empty());
4320 uint flow = 0;
4321 uint next_share = 0;
4322 bool found = false;
4323 for (SharesMap::reverse_iterator it(this->shares.rbegin()); it != this->shares.rend(); ++it) {
4324 if (it->first < this->unrestricted) return; // Note: not <= as the share may hit the limit.
4325 if (found) {
4326 flow = next_share - it->first;
4327 this->unrestricted += flow;
4328 break;
4329 } else {
4330 if (it->first == this->unrestricted) return; // !found -> Limit not hit.
4331 if (it->second == st) found = true;
4332 }
4333 next_share = it->first;
4334 }
4335 if (flow == 0) return;
4336 SharesMap new_shares;
4337 new_shares[flow] = st;
4338 for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4339 if (it->second != st) {
4340 new_shares[flow + it->first] = it->second;
4341 } else {
4342 flow = 0;
4343 }
4344 }
4345 this->shares.swap(new_shares);
4346 assert(!this->shares.empty());
4347 }
4348
4354 void FlowStat::ScaleToMonthly(uint runtime)
4355 {
4356 assert(runtime > 0);
4357 SharesMap new_shares;
4358 uint share = 0;
4359 for (SharesMap::iterator i = this->shares.begin(); i != this->shares.end(); ++i) {
4360 share = max(share + 1, i->first * 30 / runtime);
4361 new_shares[share] = i->second;
4362 if (this->unrestricted == i->first) this->unrestricted = share;
4363 }
4364 this->shares.swap(new_shares);
4365 }
4366
4373 void FlowStatMap::AddFlow(StationID origin, StationID via, uint flow)
4374 {
4375 FlowStatMap::iterator origin_it = this->find(origin);
4376 if (origin_it == this->end()) {
4377 this->insert(std::make_pair(origin, FlowStat(via, flow)));
4378 } else {
4379 origin_it->second.ChangeShare(via, flow);
4380 assert(!origin_it->second.GetShares()->empty());
4381 }
4382 }
4383
4392 void FlowStatMap::PassOnFlow(StationID origin, StationID via, uint flow)
4393 {
4394 FlowStatMap::iterator prev_it = this->find(origin);
4395 if (prev_it == this->end()) {
4396 FlowStat fs(via, flow);
4397 fs.AppendShare(INVALID_STATION, flow);
4398 this->insert(std::make_pair(origin, fs));
4399 } else {
4400 prev_it->second.ChangeShare(via, flow);
4401 prev_it->second.ChangeShare(INVALID_STATION, flow);
4402 assert(!prev_it->second.GetShares()->empty());
4403 }
4404 }
4405
4410 void FlowStatMap::FinalizeLocalConsumption(StationID self)
4411 {
4412 for (FlowStatMap::iterator i = this->begin(); i != this->end(); ++i) {
4413 FlowStat &fs = i->second;
4414 uint local = fs.GetShare(INVALID_STATION);
4415 if (local > INT_MAX) { // make sure it fits in an int
4416 fs.ChangeShare(self, -INT_MAX);
4417 fs.ChangeShare(INVALID_STATION, -INT_MAX);
4418 local -= INT_MAX;
4419 }
4420 fs.ChangeShare(self, -(int)local);
4421 fs.ChangeShare(INVALID_STATION, -(int)local);
4422
4423 /* If the local share is used up there must be a share for some
4424 * remote station. */
4425 assert(!fs.GetShares()->empty());
4426 }
4427 }
4428
4435 StationIDStack FlowStatMap::DeleteFlows(StationID via)
4436 {
4437 StationIDStack ret;
4438 for (FlowStatMap::iterator f_it = this->begin(); f_it != this->end();) {
4439 FlowStat &s_flows = f_it->second;
4440 s_flows.ChangeShare(via, INT_MIN);
4441 if (s_flows.GetShares()->empty()) {
4442 ret.Push(f_it->first);
4443 this->erase(f_it++);
4444 } else {
4445 ++f_it;
4446 }
4447 }
4448 return ret;
4449 }
4450
4455 void FlowStatMap::RestrictFlows(StationID via)
4456 {
4457 for (FlowStatMap::iterator it = this->begin(); it != this->end(); ++it) {
4458 it->second.RestrictShare(via);
4459 }
4460 }
4461
4466 void FlowStatMap::ReleaseFlows(StationID via)
4467 {
4468 for (FlowStatMap::iterator it = this->begin(); it != this->end(); ++it) {
4469 it->second.ReleaseShare(via);
4470 }
4471 }
4472
4477 uint FlowStatMap::GetFlow() const
4478 {
4479 uint ret = 0;
4480 for (FlowStatMap::const_iterator i = this->begin(); i != this->end(); ++i) {
4481 ret += (--(i->second.GetShares()->end()))->first;
4482 }
4483 return ret;
4484 }
4485
4491 uint FlowStatMap::GetFlowVia(StationID via) const
4492 {
4493 uint ret = 0;
4494 for (FlowStatMap::const_iterator i = this->begin(); i != this->end(); ++i) {
4495 ret += i->second.GetShare(via);
4496 }
4497 return ret;
4498 }
4499
4505 uint FlowStatMap::GetFlowFrom(StationID from) const
4506 {
4507 FlowStatMap::const_iterator i = this->find(from);
4508 if (i == this->end()) return 0;
4509 return (--(i->second.GetShares()->end()))->first;
4510 }
4511
4518 uint FlowStatMap::GetFlowFromVia(StationID from, StationID via) const
4519 {
4520 FlowStatMap::const_iterator i = this->find(from);
4521 if (i == this->end()) return 0;
4522 return i->second.GetShare(via);
4523 }
4524
4525 extern const TileTypeProcs _tile_type_station_procs = {
4526 DrawTile_Station, // draw_tile_proc
4527 GetSlopePixelZ_Station, // get_slope_z_proc
4528 ClearTile_Station, // clear_tile_proc
4529 NULL, // add_accepted_cargo_proc
4530 GetTileDesc_Station, // get_tile_desc_proc
4531 GetTileTrackStatus_Station, // get_tile_track_status_proc
4532 ClickTile_Station, // click_tile_proc
4533 AnimateTile_Station, // animate_tile_proc
4534 TileLoop_Station, // tile_loop_proc
4535 ChangeTileOwner_Station, // change_tile_owner_proc
4536 NULL, // add_produced_cargo_proc
4537 VehicleEnter_Station, // vehicle_enter_tile_proc
4538 GetFoundation_Station, // get_foundation_proc
4539 TerraformTile_Station, // terraform_tile_proc
4540 };