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station_cmd.cpp
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1 /* $Id: station_cmd.cpp 26891 2014-09-21 16:19:52Z fonsinchen $ */
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
67 bool IsHangar(TileIndex t)
68 {
69 assert(IsTileType(t, MP_STATION));
70
71 /* If the tile isn't an airport there's no chance it's a hangar. */
72 if (!IsAirport(t)) return false;
73
74 const Station *st = Station::GetByTile(t);
75 const AirportSpec *as = st->airport.GetSpec();
76
77 for (uint i = 0; i < as->nof_depots; i++) {
78 if (st->airport.GetHangarTile(i) == t) return true;
79 }
80
81 return false;
82 }
83
91 template <class T>
92 CommandCost GetStationAround(TileArea ta, StationID closest_station, T **st)
93 {
94 ta.tile -= TileDiffXY(1, 1);
95 ta.w += 2;
96 ta.h += 2;
97
98 /* check around to see if there's any stations there */
99 TILE_AREA_LOOP(tile_cur, ta) {
100 if (IsTileType(tile_cur, MP_STATION)) {
101 StationID t = GetStationIndex(tile_cur);
102 if (!T::IsValidID(t)) continue;
103
104 if (closest_station == INVALID_STATION) {
105 closest_station = t;
106 } else if (closest_station != t) {
107 return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
108 }
109 }
110 }
111 *st = (closest_station == INVALID_STATION) ? NULL : T::Get(closest_station);
112 return CommandCost();
113 }
114
120 typedef bool (*CMSAMatcher)(TileIndex tile);
121
128 static int CountMapSquareAround(TileIndex tile, CMSAMatcher cmp)
129 {
130 int num = 0;
131
132 for (int dx = -3; dx <= 3; dx++) {
133 for (int dy = -3; dy <= 3; dy++) {
134 TileIndex t = TileAddWrap(tile, dx, dy);
135 if (t != INVALID_TILE && cmp(t)) num++;
136 }
137 }
138
139 return num;
140 }
141
147 static bool CMSAMine(TileIndex tile)
148 {
149 /* No industry */
150 if (!IsTileType(tile, MP_INDUSTRY)) return false;
151
152 const Industry *ind = Industry::GetByTile(tile);
153
154 /* No extractive industry */
155 if ((GetIndustrySpec(ind->type)->life_type & INDUSTRYLIFE_EXTRACTIVE) == 0) return false;
156
157 for (uint i = 0; i < lengthof(ind->produced_cargo); i++) {
158 /* The industry extracts something non-liquid, i.e. no oil or plastic, so it is a mine.
159 * Also the production of passengers and mail is ignored. */
160 if (ind->produced_cargo[i] != CT_INVALID &&
161 (CargoSpec::Get(ind->produced_cargo[i])->classes & (CC_LIQUID | CC_PASSENGERS | CC_MAIL)) == 0) {
162 return true;
163 }
164 }
165
166 return false;
167 }
168
174 static bool CMSAWater(TileIndex tile)
175 {
176 return IsTileType(tile, MP_WATER) && IsWater(tile);
177 }
178
184 static bool CMSATree(TileIndex tile)
185 {
186 return IsTileType(tile, MP_TREES);
187 }
188
189 #define M(x) ((x) - STR_SV_STNAME)
190
191 enum StationNaming {
192 STATIONNAMING_RAIL,
193 STATIONNAMING_ROAD,
194 STATIONNAMING_AIRPORT,
195 STATIONNAMING_OILRIG,
196 STATIONNAMING_DOCK,
197 STATIONNAMING_HELIPORT,
198 };
199
201 struct StationNameInformation {
202 uint32 free_names;
203 bool *indtypes;
204 };
205
214 static bool FindNearIndustryName(TileIndex tile, void *user_data)
215 {
216 /* All already found industry types */
217 StationNameInformation *sni = (StationNameInformation*)user_data;
218 if (!IsTileType(tile, MP_INDUSTRY)) return false;
219
220 /* If the station name is undefined it means that it doesn't name a station */
221 IndustryType indtype = GetIndustryType(tile);
222 if (GetIndustrySpec(indtype)->station_name == STR_UNDEFINED) return false;
223
224 /* In all cases if an industry that provides a name is found two of
225 * the standard names will be disabled. */
226 sni->free_names &= ~(1 << M(STR_SV_STNAME_OILFIELD) | 1 << M(STR_SV_STNAME_MINES));
227 return !sni->indtypes[indtype];
228 }
229
230 static StringID GenerateStationName(Station *st, TileIndex tile, StationNaming name_class)
231 {
232 static const uint32 _gen_station_name_bits[] = {
233 0, // STATIONNAMING_RAIL
234 0, // STATIONNAMING_ROAD
235 1U << M(STR_SV_STNAME_AIRPORT), // STATIONNAMING_AIRPORT
236 1U << M(STR_SV_STNAME_OILFIELD), // STATIONNAMING_OILRIG
237 1U << M(STR_SV_STNAME_DOCKS), // STATIONNAMING_DOCK
238 1U << M(STR_SV_STNAME_HELIPORT), // STATIONNAMING_HELIPORT
239 };
240
241 const Town *t = st->town;
242 uint32 free_names = UINT32_MAX;
243
244 bool indtypes[NUM_INDUSTRYTYPES];
245 memset(indtypes, 0, sizeof(indtypes));
246
247 const Station *s;
248 FOR_ALL_STATIONS(s) {
249 if (s != st && s->town == t) {
250 if (s->indtype != IT_INVALID) {
251 indtypes[s->indtype] = true;
252 StringID name = GetIndustrySpec(s->indtype)->station_name;
253 if (name != STR_UNDEFINED) {
254 /* Filter for other industrytypes with the same name */
255 for (IndustryType it = 0; it < NUM_INDUSTRYTYPES; it++) {
256 const IndustrySpec *indsp = GetIndustrySpec(it);
257 if (indsp->enabled && indsp->station_name == name) indtypes[it] = true;
258 }
259 }
260 continue;
261 }
262 uint str = M(s->string_id);
263 if (str <= 0x20) {
264 if (str == M(STR_SV_STNAME_FOREST)) {
265 str = M(STR_SV_STNAME_WOODS);
266 }
267 ClrBit(free_names, str);
268 }
269 }
270 }
271
272 TileIndex indtile = tile;
273 StationNameInformation sni = { free_names, indtypes };
274 if (CircularTileSearch(&indtile, 7, FindNearIndustryName, &sni)) {
275 /* An industry has been found nearby */
276 IndustryType indtype = GetIndustryType(indtile);
277 const IndustrySpec *indsp = GetIndustrySpec(indtype);
278 /* STR_NULL means it only disables oil rig/mines */
279 if (indsp->station_name != STR_NULL) {
280 st->indtype = indtype;
281 return STR_SV_STNAME_FALLBACK;
282 }
283 }
284
285 /* Oil rigs/mines name could be marked not free by looking for a near by industry. */
286 free_names = sni.free_names;
287
288 /* check default names */
289 uint32 tmp = free_names & _gen_station_name_bits[name_class];
290 if (tmp != 0) return STR_SV_STNAME + FindFirstBit(tmp);
291
292 /* check mine? */
293 if (HasBit(free_names, M(STR_SV_STNAME_MINES))) {
294 if (CountMapSquareAround(tile, CMSAMine) >= 2) {
295 return STR_SV_STNAME_MINES;
296 }
297 }
298
299 /* check close enough to town to get central as name? */
300 if (DistanceMax(tile, t->xy) < 8) {
301 if (HasBit(free_names, M(STR_SV_STNAME))) return STR_SV_STNAME;
302
303 if (HasBit(free_names, M(STR_SV_STNAME_CENTRAL))) return STR_SV_STNAME_CENTRAL;
304 }
305
306 /* Check lakeside */
307 if (HasBit(free_names, M(STR_SV_STNAME_LAKESIDE)) &&
308 DistanceFromEdge(tile) < 20 &&
309 CountMapSquareAround(tile, CMSAWater) >= 5) {
310 return STR_SV_STNAME_LAKESIDE;
311 }
312
313 /* Check woods */
314 if (HasBit(free_names, M(STR_SV_STNAME_WOODS)) && (
315 CountMapSquareAround(tile, CMSATree) >= 8 ||
316 CountMapSquareAround(tile, IsTileForestIndustry) >= 2)
317 ) {
318 return _settings_game.game_creation.landscape == LT_TROPIC ? STR_SV_STNAME_FOREST : STR_SV_STNAME_WOODS;
319 }
320
321 /* check elevation compared to town */
322 int z = GetTileZ(tile);
323 int z2 = GetTileZ(t->xy);
324 if (z < z2) {
325 if (HasBit(free_names, M(STR_SV_STNAME_VALLEY))) return STR_SV_STNAME_VALLEY;
326 } else if (z > z2) {
327 if (HasBit(free_names, M(STR_SV_STNAME_HEIGHTS))) return STR_SV_STNAME_HEIGHTS;
328 }
329
330 /* check direction compared to town */
331 static const int8 _direction_and_table[] = {
332 ~( (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
333 ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
334 ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_EAST)) | (1 << M(STR_SV_STNAME_NORTH)) ),
335 ~( (1 << M(STR_SV_STNAME_SOUTH)) | (1 << M(STR_SV_STNAME_WEST)) | (1 << M(STR_SV_STNAME_EAST)) ),
336 };
337
338 free_names &= _direction_and_table[
339 (TileX(tile) < TileX(t->xy)) +
340 (TileY(tile) < TileY(t->xy)) * 2];
341
342 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));
343 return (tmp == 0) ? STR_SV_STNAME_FALLBACK : (STR_SV_STNAME + FindFirstBit(tmp));
344 }
345 #undef M
346
352 static Station *GetClosestDeletedStation(TileIndex tile)
353 {
354 uint threshold = 8;
355 Station *best_station = NULL;
356 Station *st;
357
358 FOR_ALL_STATIONS(st) {
359 if (!st->IsInUse() && st->owner == _current_company) {
360 uint cur_dist = DistanceManhattan(tile, st->xy);
361
362 if (cur_dist < threshold) {
363 threshold = cur_dist;
364 best_station = st;
365 }
366 }
367 }
368
369 return best_station;
370 }
371
372
373 void Station::GetTileArea(TileArea *ta, StationType type) const
374 {
375 switch (type) {
376 case STATION_RAIL:
377 *ta = this->train_station;
378 return;
379
380 case STATION_AIRPORT:
381 *ta = this->airport;
382 return;
383
384 case STATION_TRUCK:
385 *ta = this->truck_station;
386 return;
387
388 case STATION_BUS:
389 *ta = this->bus_station;
390 return;
391
392 case STATION_DOCK:
393 case STATION_OILRIG:
394 ta->tile = this->dock_tile;
395 break;
396
397 default: NOT_REACHED();
398 }
399
400 ta->w = 1;
401 ta->h = 1;
402 }
403
407 void Station::UpdateVirtCoord()
408 {
409 Point pt = RemapCoords2(TileX(this->xy) * TILE_SIZE, TileY(this->xy) * TILE_SIZE);
410
411 pt.y -= 32 * ZOOM_LVL_BASE;
412 if ((this->facilities & FACIL_AIRPORT) && this->airport.type == AT_OILRIG) pt.y -= 16 * ZOOM_LVL_BASE;
413
414 SetDParam(0, this->index);
415 SetDParam(1, this->facilities);
416 this->sign.UpdatePosition(pt.x, pt.y, STR_VIEWPORT_STATION);
417
418 SetWindowDirty(WC_STATION_VIEW, this->index);
419 }
420
422 void UpdateAllStationVirtCoords()
423 {
424 BaseStation *st;
425
426 FOR_ALL_BASE_STATIONS(st) {
427 st->UpdateVirtCoord();
428 }
429 }
430
436 static uint GetAcceptanceMask(const Station *st)
437 {
438 uint mask = 0;
439
440 for (CargoID i = 0; i < NUM_CARGO; i++) {
441 if (HasBit(st->goods[i].status, GoodsEntry::GES_ACCEPTANCE)) mask |= 1 << i;
442 }
443 return mask;
444 }
445
450 static void ShowRejectOrAcceptNews(const Station *st, uint num_items, CargoID *cargo, StringID msg)
451 {
452 for (uint i = 0; i < num_items; i++) {
453 SetDParam(i + 1, CargoSpec::Get(cargo[i])->name);
454 }
455
456 SetDParam(0, st->index);
457 AddNewsItem(msg, NT_ACCEPTANCE, NF_INCOLOUR | NF_SMALL, NR_STATION, st->index);
458 }
459
467 CargoArray GetProductionAroundTiles(TileIndex tile, int w, int h, int rad)
468 {
469 CargoArray produced;
470
471 int x = TileX(tile);
472 int y = TileY(tile);
473
474 /* expand the region by rad tiles on each side
475 * while making sure that we remain inside the board. */
476 int x2 = min(x + w + rad, MapSizeX());
477 int x1 = max(x - rad, 0);
478
479 int y2 = min(y + h + rad, MapSizeY());
480 int y1 = max(y - rad, 0);
481
482 assert(x1 < x2);
483 assert(y1 < y2);
484 assert(w > 0);
485 assert(h > 0);
486
487 TileArea ta(TileXY(x1, y1), TileXY(x2 - 1, y2 - 1));
488
489 /* Loop over all tiles to get the produced cargo of
490 * everything except industries */
491 TILE_AREA_LOOP(tile, ta) AddProducedCargo(tile, produced);
492
493 /* Loop over the industries. They produce cargo for
494 * anything that is within 'rad' from their bounding
495 * box. As such if you have e.g. a oil well the tile
496 * area loop might not hit an industry tile while
497 * the industry would produce cargo for the station.
498 */
499 const Industry *i;
500 FOR_ALL_INDUSTRIES(i) {
501 if (!ta.Intersects(i->location)) continue;
502
503 for (uint j = 0; j < lengthof(i->produced_cargo); j++) {
504 CargoID cargo = i->produced_cargo[j];
505 if (cargo != CT_INVALID) produced[cargo]++;
506 }
507 }
508
509 return produced;
510 }
511
520 CargoArray GetAcceptanceAroundTiles(TileIndex tile, int w, int h, int rad, uint32 *always_accepted)
521 {
522 CargoArray acceptance;
523 if (always_accepted != NULL) *always_accepted = 0;
524
525 int x = TileX(tile);
526 int y = TileY(tile);
527
528 /* expand the region by rad tiles on each side
529 * while making sure that we remain inside the board. */
530 int x2 = min(x + w + rad, MapSizeX());
531 int y2 = min(y + h + rad, MapSizeY());
532 int x1 = max(x - rad, 0);
533 int y1 = max(y - rad, 0);
534
535 assert(x1 < x2);
536 assert(y1 < y2);
537 assert(w > 0);
538 assert(h > 0);
539
540 for (int yc = y1; yc != y2; yc++) {
541 for (int xc = x1; xc != x2; xc++) {
542 TileIndex tile = TileXY(xc, yc);
543 AddAcceptedCargo(tile, acceptance, always_accepted);
544 }
545 }
546
547 return acceptance;
548 }
549
555 void UpdateStationAcceptance(Station *st, bool show_msg)
556 {
557 /* old accepted goods types */
558 uint old_acc = GetAcceptanceMask(st);
559
560 /* And retrieve the acceptance. */
561 CargoArray acceptance;
562 if (!st->rect.IsEmpty()) {
563 acceptance = GetAcceptanceAroundTiles(
564 TileXY(st->rect.left, st->rect.top),
565 st->rect.right - st->rect.left + 1,
566 st->rect.bottom - st->rect.top + 1,
567 st->GetCatchmentRadius(),
568 &st->always_accepted
569 );
570 }
571
572 /* Adjust in case our station only accepts fewer kinds of goods */
573 for (CargoID i = 0; i < NUM_CARGO; i++) {
574 uint amt = acceptance[i];
575
576 /* Make sure the station can accept the goods type. */
577 bool is_passengers = IsCargoInClass(i, CC_PASSENGERS);
578 if ((!is_passengers && !(st->facilities & ~FACIL_BUS_STOP)) ||
579 (is_passengers && !(st->facilities & ~FACIL_TRUCK_STOP))) {
580 amt = 0;
581 }
582
583 GoodsEntry &ge = st->goods[i];
584 SB(ge.status, GoodsEntry::GES_ACCEPTANCE, 1, amt >= 8);
585 if (LinkGraph::IsValidID(ge.link_graph)) {
586 (*LinkGraph::Get(ge.link_graph))[ge.node].SetDemand(amt / 8);
587 }
588 }
589
590 /* Only show a message in case the acceptance was actually changed. */
591 uint new_acc = GetAcceptanceMask(st);
592 if (old_acc == new_acc) return;
593
594 /* show a message to report that the acceptance was changed? */
595 if (show_msg && st->owner == _local_company && st->IsInUse()) {
596 /* List of accept and reject strings for different number of
597 * cargo types */
598 static const StringID accept_msg[] = {
599 STR_NEWS_STATION_NOW_ACCEPTS_CARGO,
600 STR_NEWS_STATION_NOW_ACCEPTS_CARGO_AND_CARGO,
601 };
602 static const StringID reject_msg[] = {
603 STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO,
604 STR_NEWS_STATION_NO_LONGER_ACCEPTS_CARGO_OR_CARGO,
605 };
606
607 /* Array of accepted and rejected cargo types */
608 CargoID accepts[2] = { CT_INVALID, CT_INVALID };
609 CargoID rejects[2] = { CT_INVALID, CT_INVALID };
610 uint num_acc = 0;
611 uint num_rej = 0;
612
613 /* Test each cargo type to see if its acceptance has changed */
614 for (CargoID i = 0; i < NUM_CARGO; i++) {
615 if (HasBit(new_acc, i)) {
616 if (!HasBit(old_acc, i) && num_acc < lengthof(accepts)) {
617 /* New cargo is accepted */
618 accepts[num_acc++] = i;
619 }
620 } else {
621 if (HasBit(old_acc, i) && num_rej < lengthof(rejects)) {
622 /* Old cargo is no longer accepted */
623 rejects[num_rej++] = i;
624 }
625 }
626 }
627
628 /* Show news message if there are any changes */
629 if (num_acc > 0) ShowRejectOrAcceptNews(st, num_acc, accepts, accept_msg[num_acc - 1]);
630 if (num_rej > 0) ShowRejectOrAcceptNews(st, num_rej, rejects, reject_msg[num_rej - 1]);
631 }
632
633 /* redraw the station view since acceptance changed */
634 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ACCEPT_RATING_LIST);
635 }
636
637 static void UpdateStationSignCoord(BaseStation *st)
638 {
639 const StationRect *r = &st->rect;
640
641 if (r->IsEmpty()) return; // no tiles belong to this station
642
643 /* clamp sign coord to be inside the station rect */
644 st->xy = TileXY(ClampU(TileX(st->xy), r->left, r->right), ClampU(TileY(st->xy), r->top, r->bottom));
645 st->UpdateVirtCoord();
646
647 if (!Station::IsExpected(st)) return;
648 Station *full_station = Station::From(st);
649 for (CargoID c = 0; c < NUM_CARGO; ++c) {
650 LinkGraphID lg = full_station->goods[c].link_graph;
651 if (!LinkGraph::IsValidID(lg)) continue;
652 (*LinkGraph::Get(lg))[full_station->goods[c].node].UpdateLocation(st->xy);
653 }
654 }
655
665 static CommandCost BuildStationPart(Station **st, DoCommandFlag flags, bool reuse, TileArea area, StationNaming name_class)
666 {
667 /* Find a deleted station close to us */
668 if (*st == NULL && reuse) *st = GetClosestDeletedStation(area.tile);
669
670 if (*st != NULL) {
671 if ((*st)->owner != _current_company) {
672 return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION);
673 }
674
675 CommandCost ret = (*st)->rect.BeforeAddRect(area.tile, area.w, area.h, StationRect::ADD_TEST);
676 if (ret.Failed()) return ret;
677 } else {
678 /* allocate and initialize new station */
679 if (!Station::CanAllocateItem()) return_cmd_error(STR_ERROR_TOO_MANY_STATIONS_LOADING);
680
681 if (flags & DC_EXEC) {
682 *st = new Station(area.tile);
683
684 (*st)->town = ClosestTownFromTile(area.tile, UINT_MAX);
685 (*st)->string_id = GenerateStationName(*st, area.tile, name_class);
686
687 if (Company::IsValidID(_current_company)) {
688 SetBit((*st)->town->have_ratings, _current_company);
689 }
690 }
691 }
692 return CommandCost();
693 }
694
701 static void DeleteStationIfEmpty(BaseStation *st)
702 {
703 if (!st->IsInUse()) {
704 st->delete_ctr = 0;
705 InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
706 }
707 /* station remains but it probably lost some parts - station sign should stay in the station boundaries */
708 UpdateStationSignCoord(st);
709 }
710
711 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags);
712
722 CommandCost CheckBuildableTile(TileIndex tile, uint invalid_dirs, int &allowed_z, bool allow_steep, bool check_bridge = true)
723 {
724 if (check_bridge && IsBridgeAbove(tile)) {
725 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
726 }
727
728 CommandCost ret = EnsureNoVehicleOnGround(tile);
729 if (ret.Failed()) return ret;
730
731 int z;
732 Slope tileh = GetTileSlope(tile, &z);
733
734 /* Prohibit building if
735 * 1) The tile is "steep" (i.e. stretches two height levels).
736 * 2) The tile is non-flat and the build_on_slopes switch is disabled.
737 */
738 if ((!allow_steep && IsSteepSlope(tileh)) ||
739 ((!_settings_game.construction.build_on_slopes) && tileh != SLOPE_FLAT)) {
740 return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
741 }
742
743 CommandCost cost(EXPENSES_CONSTRUCTION);
744 int flat_z = z + GetSlopeMaxZ(tileh);
745 if (tileh != SLOPE_FLAT) {
746 /* Forbid building if the tile faces a slope in a invalid direction. */
747 for (DiagDirection dir = DIAGDIR_BEGIN; dir != DIAGDIR_END; dir++) {
748 if (HasBit(invalid_dirs, dir) && !CanBuildDepotByTileh(dir, tileh)) {
749 return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
750 }
751 }
752 cost.AddCost(_price[PR_BUILD_FOUNDATION]);
753 }
754
755 /* The level of this tile must be equal to allowed_z. */
756 if (allowed_z < 0) {
757 /* First tile. */
758 allowed_z = flat_z;
759 } else if (allowed_z != flat_z) {
760 return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
761 }
762
763 return cost;
764 }
765
772 CommandCost CheckFlatLand(TileArea tile_area, DoCommandFlag flags)
773 {
774 CommandCost cost(EXPENSES_CONSTRUCTION);
775 int allowed_z = -1;
776
777 TILE_AREA_LOOP(tile_cur, tile_area) {
778 CommandCost ret = CheckBuildableTile(tile_cur, 0, allowed_z, true);
779 if (ret.Failed()) return ret;
780 cost.AddCost(ret);
781
782 ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
783 if (ret.Failed()) return ret;
784 cost.AddCost(ret);
785 }
786
787 return cost;
788 }
789
804 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)
805 {
806 CommandCost cost(EXPENSES_CONSTRUCTION);
807 int allowed_z = -1;
808 uint invalid_dirs = 5 << axis;
809
810 const StationSpec *statspec = StationClass::Get(spec_class)->GetSpec(spec_index);
811 bool slope_cb = statspec != NULL && HasBit(statspec->callback_mask, CBM_STATION_SLOPE_CHECK);
812
813 TILE_AREA_LOOP(tile_cur, tile_area) {
814 CommandCost ret = CheckBuildableTile(tile_cur, invalid_dirs, allowed_z, false);
815 if (ret.Failed()) return ret;
816 cost.AddCost(ret);
817
818 if (slope_cb) {
819 /* Do slope check if requested. */
820 ret = PerformStationTileSlopeCheck(tile_area.tile, tile_cur, statspec, axis, plat_len, numtracks);
821 if (ret.Failed()) return ret;
822 }
823
824 /* if station is set, then we have special handling to allow building on top of already existing stations.
825 * so station points to INVALID_STATION if we can build on any station.
826 * Or it points to a station if we're only allowed to build on exactly that station. */
827 if (station != NULL && IsTileType(tile_cur, MP_STATION)) {
828 if (!IsRailStation(tile_cur)) {
829 return ClearTile_Station(tile_cur, DC_AUTO); // get error message
830 } else {
831 StationID st = GetStationIndex(tile_cur);
832 if (*station == INVALID_STATION) {
833 *station = st;
834 } else if (*station != st) {
835 return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
836 }
837 }
838 } else {
839 /* Rail type is only valid when building a railway station; if station to
840 * build isn't a rail station it's INVALID_RAILTYPE. */
841 if (rt != INVALID_RAILTYPE &&
842 IsPlainRailTile(tile_cur) && !HasSignals(tile_cur) &&
843 HasPowerOnRail(GetRailType(tile_cur), rt)) {
844 /* Allow overbuilding if the tile:
845 * - has rail, but no signals
846 * - it has exactly one track
847 * - the track is in line with the station
848 * - the current rail type has power on the to-be-built type (e.g. convert normal rail to el rail)
849 */
850 TrackBits tracks = GetTrackBits(tile_cur);
851 Track track = RemoveFirstTrack(&tracks);
852 Track expected_track = HasBit(invalid_dirs, DIAGDIR_NE) ? TRACK_X : TRACK_Y;
853
854 if (tracks == TRACK_BIT_NONE && track == expected_track) {
855 /* Check for trains having a reservation for this tile. */
856 if (HasBit(GetRailReservationTrackBits(tile_cur), track)) {
857 Train *v = GetTrainForReservation(tile_cur, track);
858 if (v != NULL) {
859 *affected_vehicles.Append() = v;
860 }
861 }
862 CommandCost ret = DoCommand(tile_cur, 0, track, flags, CMD_REMOVE_SINGLE_RAIL);
863 if (ret.Failed()) return ret;
864 cost.AddCost(ret);
865 /* With flags & ~DC_EXEC CmdLandscapeClear would fail since the rail still exists */
866 continue;
867 }
868 }
869 ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
870 if (ret.Failed()) return ret;
871 cost.AddCost(ret);
872 }
873 }
874
875 return cost;
876 }
877
890 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)
891 {
892 CommandCost cost(EXPENSES_CONSTRUCTION);
893 int allowed_z = -1;
894
895 TILE_AREA_LOOP(cur_tile, tile_area) {
896 CommandCost ret = CheckBuildableTile(cur_tile, invalid_dirs, allowed_z, !is_drive_through);
897 if (ret.Failed()) return ret;
898 cost.AddCost(ret);
899
900 /* If station is set, then we have special handling to allow building on top of already existing stations.
901 * Station points to INVALID_STATION if we can build on any station.
902 * Or it points to a station if we're only allowed to build on exactly that station. */
903 if (station != NULL && IsTileType(cur_tile, MP_STATION)) {
904 if (!IsRoadStop(cur_tile)) {
905 return ClearTile_Station(cur_tile, DC_AUTO); // Get error message.
906 } else {
907 if (is_truck_stop != IsTruckStop(cur_tile) ||
908 is_drive_through != IsDriveThroughStopTile(cur_tile)) {
909 return ClearTile_Station(cur_tile, DC_AUTO); // Get error message.
910 }
911 /* Drive-through station in the wrong direction. */
912 if (is_drive_through && IsDriveThroughStopTile(cur_tile) && DiagDirToAxis(GetRoadStopDir(cur_tile)) != axis){
913 return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
914 }
915 StationID st = GetStationIndex(cur_tile);
916 if (*station == INVALID_STATION) {
917 *station = st;
918 } else if (*station != st) {
919 return_cmd_error(STR_ERROR_ADJOINS_MORE_THAN_ONE_EXISTING);
920 }
921 }
922 } else {
923 bool build_over_road = is_drive_through && IsNormalRoadTile(cur_tile);
924 /* Road bits in the wrong direction. */
925 RoadBits rb = IsNormalRoadTile(cur_tile) ? GetAllRoadBits(cur_tile) : ROAD_NONE;
926 if (build_over_road && (rb & (axis == AXIS_X ? ROAD_Y : ROAD_X)) != 0) {
927 /* Someone was pedantic and *NEEDED* three fracking different error messages. */
928 switch (CountBits(rb)) {
929 case 1:
930 return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
931
932 case 2:
933 if (rb == ROAD_X || rb == ROAD_Y) return_cmd_error(STR_ERROR_DRIVE_THROUGH_DIRECTION);
934 return_cmd_error(STR_ERROR_DRIVE_THROUGH_CORNER);
935
936 default: // 3 or 4
937 return_cmd_error(STR_ERROR_DRIVE_THROUGH_JUNCTION);
938 }
939 }
940
941 RoadTypes cur_rts = IsNormalRoadTile(cur_tile) ? GetRoadTypes(cur_tile) : ROADTYPES_NONE;
942 uint num_roadbits = 0;
943 if (build_over_road) {
944 /* There is a road, check if we can build road+tram stop over it. */
945 if (HasBit(cur_rts, ROADTYPE_ROAD)) {
946 Owner road_owner = GetRoadOwner(cur_tile, ROADTYPE_ROAD);
947 if (road_owner == OWNER_TOWN) {
948 if (!_settings_game.construction.road_stop_on_town_road) return_cmd_error(STR_ERROR_DRIVE_THROUGH_ON_TOWN_ROAD);
949 } else if (!_settings_game.construction.road_stop_on_competitor_road && road_owner != OWNER_NONE) {
950 CommandCost ret = CheckOwnership(road_owner);
951 if (ret.Failed()) return ret;
952 }
953 num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_ROAD));
954 }
955
956 /* There is a tram, check if we can build road+tram stop over it. */
957 if (HasBit(cur_rts, ROADTYPE_TRAM)) {
958 Owner tram_owner = GetRoadOwner(cur_tile, ROADTYPE_TRAM);
959 if (!_settings_game.construction.road_stop_on_competitor_road && tram_owner != OWNER_NONE) {
960 CommandCost ret = CheckOwnership(tram_owner);
961 if (ret.Failed()) return ret;
962 }
963 num_roadbits += CountBits(GetRoadBits(cur_tile, ROADTYPE_TRAM));
964 }
965
966 /* Take into account existing roadbits. */
967 rts |= cur_rts;
968 } else {
969 ret = DoCommand(cur_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
970 if (ret.Failed()) return ret;
971 cost.AddCost(ret);
972 }
973
974 uint roadbits_to_build = CountBits(rts) * 2 - num_roadbits;
975 cost.AddCost(_price[PR_BUILD_ROAD] * roadbits_to_build);
976 }
977 }
978
979 return cost;
980 }
981
989 CommandCost CanExpandRailStation(const BaseStation *st, TileArea &new_ta, Axis axis)
990 {
991 TileArea cur_ta = st->train_station;
992
993 /* determine new size of train station region.. */
994 int x = min(TileX(cur_ta.tile), TileX(new_ta.tile));
995 int y = min(TileY(cur_ta.tile), TileY(new_ta.tile));
996 new_ta.w = max(TileX(cur_ta.tile) + cur_ta.w, TileX(new_ta.tile) + new_ta.w) - x;
997 new_ta.h = max(TileY(cur_ta.tile) + cur_ta.h, TileY(new_ta.tile) + new_ta.h) - y;
998 new_ta.tile = TileXY(x, y);
999
1000 /* make sure the final size is not too big. */
1001 if (new_ta.w > _settings_game.station.station_spread || new_ta.h > _settings_game.station.station_spread) {
1002 return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
1003 }
1004
1005 return CommandCost();
1006 }
1007
1008 static inline byte *CreateSingle(byte *layout, int n)
1009 {
1010 int i = n;
1011 do *layout++ = 0; while (--i);
1012 layout[((n - 1) >> 1) - n] = 2;
1013 return layout;
1014 }
1015
1016 static inline byte *CreateMulti(byte *layout, int n, byte b)
1017 {
1018 int i = n;
1019 do *layout++ = b; while (--i);
1020 if (n > 4) {
1021 layout[0 - n] = 0;
1022 layout[n - 1 - n] = 0;
1023 }
1024 return layout;
1025 }
1026
1034 void GetStationLayout(byte *layout, int numtracks, int plat_len, const StationSpec *statspec)
1035 {
1036 if (statspec != NULL && statspec->lengths >= plat_len &&
1037 statspec->platforms[plat_len - 1] >= numtracks &&
1038 statspec->layouts[plat_len - 1][numtracks - 1]) {
1039 /* Custom layout defined, follow it. */
1040 memcpy(layout, statspec->layouts[plat_len - 1][numtracks - 1],
1041 plat_len * numtracks);
1042 return;
1043 }
1044
1045 if (plat_len == 1) {
1046 CreateSingle(layout, numtracks);
1047 } else {
1048 if (numtracks & 1) layout = CreateSingle(layout, plat_len);
1049 numtracks >>= 1;
1050
1051 while (--numtracks >= 0) {
1052 layout = CreateMulti(layout, plat_len, 4);
1053 layout = CreateMulti(layout, plat_len, 6);
1054 }
1055 }
1056 }
1057
1069 template <class T, StringID error_message>
1070 CommandCost FindJoiningBaseStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, T **st)
1071 {
1072 assert(*st == NULL);
1073 bool check_surrounding = true;
1074
1075 if (_settings_game.station.adjacent_stations) {
1076 if (existing_station != INVALID_STATION) {
1077 if (adjacent && existing_station != station_to_join) {
1078 /* You can't build an adjacent station over the top of one that
1079 * already exists. */
1080 return_cmd_error(error_message);
1081 } else {
1082 /* Extend the current station, and don't check whether it will
1083 * be near any other stations. */
1084 *st = T::GetIfValid(existing_station);
1085 check_surrounding = (*st == NULL);
1086 }
1087 } else {
1088 /* There's no station here. Don't check the tiles surrounding this
1089 * one if the company wanted to build an adjacent station. */
1090 if (adjacent) check_surrounding = false;
1091 }
1092 }
1093
1094 if (check_surrounding) {
1095 /* Make sure there are no similar stations around us. */
1096 CommandCost ret = GetStationAround(ta, existing_station, st);
1097 if (ret.Failed()) return ret;
1098 }
1099
1100 /* Distant join */
1101 if (*st == NULL && station_to_join != INVALID_STATION) *st = T::GetIfValid(station_to_join);
1102
1103 return CommandCost();
1104 }
1105
1115 static CommandCost FindJoiningStation(StationID existing_station, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
1116 {
1117 return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_RAILWAY_STATION_FIRST>(existing_station, station_to_join, adjacent, ta, st);
1118 }
1119
1129 CommandCost FindJoiningWaypoint(StationID existing_waypoint, StationID waypoint_to_join, bool adjacent, TileArea ta, Waypoint **wp)
1130 {
1131 return FindJoiningBaseStation<Waypoint, STR_ERROR_MUST_REMOVE_RAILWAYPOINT_FIRST>(existing_waypoint, waypoint_to_join, adjacent, ta, wp);
1132 }
1133
1151 CommandCost CmdBuildRailStation(TileIndex tile_org, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1152 {
1153 /* Unpack parameters */
1154 RailType rt = Extract<RailType, 0, 4>(p1);
1155 Axis axis = Extract<Axis, 4, 1>(p1);
1156 byte numtracks = GB(p1, 8, 8);
1157 byte plat_len = GB(p1, 16, 8);
1158 bool adjacent = HasBit(p1, 24);
1159
1160 StationClassID spec_class = Extract<StationClassID, 0, 8>(p2);
1161 byte spec_index = GB(p2, 8, 8);
1162 StationID station_to_join = GB(p2, 16, 16);
1163
1164 /* Does the authority allow this? */
1165 CommandCost ret = CheckIfAuthorityAllowsNewStation(tile_org, flags);
1166 if (ret.Failed()) return ret;
1167
1168 if (!ValParamRailtype(rt)) return CMD_ERROR;
1169
1170 /* Check if the given station class is valid */
1171 if ((uint)spec_class >= StationClass::GetClassCount() || spec_class == STAT_CLASS_WAYP) return CMD_ERROR;
1172 if (spec_index >= StationClass::Get(spec_class)->GetSpecCount()) return CMD_ERROR;
1173 if (plat_len == 0 || numtracks == 0) return CMD_ERROR;
1174
1175 int w_org, h_org;
1176 if (axis == AXIS_X) {
1177 w_org = plat_len;
1178 h_org = numtracks;
1179 } else {
1180 h_org = plat_len;
1181 w_org = numtracks;
1182 }
1183
1184 bool reuse = (station_to_join != NEW_STATION);
1185 if (!reuse) station_to_join = INVALID_STATION;
1186 bool distant_join = (station_to_join != INVALID_STATION);
1187
1188 if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
1189
1190 if (h_org > _settings_game.station.station_spread || w_org > _settings_game.station.station_spread) return CMD_ERROR;
1191
1192 /* these values are those that will be stored in train_tile and station_platforms */
1193 TileArea new_location(tile_org, w_org, h_org);
1194
1195 /* Make sure the area below consists of clear tiles. (OR tiles belonging to a certain rail station) */
1196 StationID est = INVALID_STATION;
1197 SmallVector<Train *, 4> affected_vehicles;
1198 /* Clear the land below the station. */
1199 CommandCost cost = CheckFlatLandRailStation(new_location, flags, axis, &est, rt, affected_vehicles, spec_class, spec_index, plat_len, numtracks);
1200 if (cost.Failed()) return cost;
1201 /* Add construction expenses. */
1202 cost.AddCost((numtracks * _price[PR_BUILD_STATION_RAIL] + _price[PR_BUILD_STATION_RAIL_LENGTH]) * plat_len);
1203 cost.AddCost(numtracks * plat_len * RailBuildCost(rt));
1204
1205 Station *st = NULL;
1206 ret = FindJoiningStation(est, station_to_join, adjacent, new_location, &st);
1207 if (ret.Failed()) return ret;
1208
1209 ret = BuildStationPart(&st, flags, reuse, new_location, STATIONNAMING_RAIL);
1210 if (ret.Failed()) return ret;
1211
1212 if (st != NULL && st->train_station.tile != INVALID_TILE) {
1213 CommandCost ret = CanExpandRailStation(st, new_location, axis);
1214 if (ret.Failed()) return ret;
1215 }
1216
1217 /* Check if we can allocate a custom stationspec to this station */
1218 const StationSpec *statspec = StationClass::Get(spec_class)->GetSpec(spec_index);
1219 int specindex = AllocateSpecToStation(statspec, st, (flags & DC_EXEC) != 0);
1220 if (specindex == -1) return_cmd_error(STR_ERROR_TOO_MANY_STATION_SPECS);
1221
1222 if (statspec != NULL) {
1223 /* Perform NewStation checks */
1224
1225 /* Check if the station size is permitted */
1226 if (HasBit(statspec->disallowed_platforms, min(numtracks - 1, 7)) || HasBit(statspec->disallowed_lengths, min(plat_len - 1, 7))) {
1227 return CMD_ERROR;
1228 }
1229
1230 /* Check if the station is buildable */
1231 if (HasBit(statspec->callback_mask, CBM_STATION_AVAIL)) {
1232 uint16 cb_res = GetStationCallback(CBID_STATION_AVAILABILITY, 0, 0, statspec, NULL, INVALID_TILE);
1233 if (cb_res != CALLBACK_FAILED && !Convert8bitBooleanCallback(statspec->grf_prop.grffile, CBID_STATION_AVAILABILITY, cb_res)) return CMD_ERROR;
1234 }
1235 }
1236
1237 if (flags & DC_EXEC) {
1238 TileIndexDiff tile_delta;
1239 byte *layout_ptr;
1240 byte numtracks_orig;
1241 Track track;
1242
1243 st->train_station = new_location;
1244 st->AddFacility(FACIL_TRAIN, new_location.tile);
1245
1246 st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TRY);
1247
1248 if (statspec != NULL) {
1249 /* Include this station spec's animation trigger bitmask
1250 * in the station's cached copy. */
1251 st->cached_anim_triggers |= statspec->animation.triggers;
1252 }
1253
1254 tile_delta = (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
1255 track = AxisToTrack(axis);
1256
1257 layout_ptr = AllocaM(byte, numtracks * plat_len);
1258 GetStationLayout(layout_ptr, numtracks, plat_len, statspec);
1259
1260 numtracks_orig = numtracks;
1261
1262 Company *c = Company::Get(st->owner);
1263 TileIndex tile_track = tile_org;
1264 do {
1265 TileIndex tile = tile_track;
1266 int w = plat_len;
1267 do {
1268 byte layout = *layout_ptr++;
1269 if (IsRailStationTile(tile) && HasStationReservation(tile)) {
1270 /* Check for trains having a reservation for this tile. */
1271 Train *v = GetTrainForReservation(tile, AxisToTrack(GetRailStationAxis(tile)));
1272 if (v != NULL) {
1273 FreeTrainTrackReservation(v);
1274 *affected_vehicles.Append() = v;
1275 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
1276 for (; v->Next() != NULL; v = v->Next()) { }
1277 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), false);
1278 }
1279 }
1280
1281 /* Railtype can change when overbuilding. */
1282 if (IsRailStationTile(tile)) {
1283 if (!IsStationTileBlocked(tile)) c->infrastructure.rail[GetRailType(tile)]--;
1284 c->infrastructure.station--;
1285 }
1286
1287 /* Remove animation if overbuilding */
1288 DeleteAnimatedTile(tile);
1289 byte old_specindex = HasStationTileRail(tile) ? GetCustomStationSpecIndex(tile) : 0;
1290 MakeRailStation(tile, st->owner, st->index, axis, layout & ~1, rt);
1291 /* Free the spec if we overbuild something */
1292 DeallocateSpecFromStation(st, old_specindex);
1293
1294 SetCustomStationSpecIndex(tile, specindex);
1295 SetStationTileRandomBits(tile, GB(Random(), 0, 4));
1296 SetAnimationFrame(tile, 0);
1297
1298 if (!IsStationTileBlocked(tile)) c->infrastructure.rail[rt]++;
1299 c->infrastructure.station++;
1300
1301 if (statspec != NULL) {
1302 /* Use a fixed axis for GetPlatformInfo as our platforms / numtracks are always the right way around */
1303 uint32 platinfo = GetPlatformInfo(AXIS_X, GetStationGfx(tile), plat_len, numtracks_orig, plat_len - w, numtracks_orig - numtracks, false);
1304
1305 /* As the station is not yet completely finished, the station does not yet exist. */
1306 uint16 callback = GetStationCallback(CBID_STATION_TILE_LAYOUT, platinfo, 0, statspec, NULL, tile);
1307 if (callback != CALLBACK_FAILED) {
1308 if (callback < 8) {
1309 SetStationGfx(tile, (callback & ~1) + axis);
1310 } else {
1311 ErrorUnknownCallbackResult(statspec->grf_prop.grffile->grfid, CBID_STATION_TILE_LAYOUT, callback);
1312 }
1313 }
1314
1315 /* Trigger station animation -- after building? */
1316 TriggerStationAnimation(st, tile, SAT_BUILT);
1317 }
1318
1319 tile += tile_delta;
1320 } while (--w);
1321 AddTrackToSignalBuffer(tile_track, track, _current_company);
1322 YapfNotifyTrackLayoutChange(tile_track, track);
1323 tile_track += tile_delta ^ TileDiffXY(1, 1); // perpendicular to tile_delta
1324 } while (--numtracks);
1325
1326 for (uint i = 0; i < affected_vehicles.Length(); ++i) {
1327 /* Restore reservations of trains. */
1328 Train *v = affected_vehicles[i];
1329 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
1330 TryPathReserve(v, true, true);
1331 for (; v->Next() != NULL; v = v->Next()) { }
1332 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
1333 }
1334
1335 /* Check whether we need to expand the reservation of trains already on the station. */
1336 TileArea update_reservation_area;
1337 if (axis == AXIS_X) {
1338 update_reservation_area = TileArea(tile_org, 1, numtracks_orig);
1339 } else {
1340 update_reservation_area = TileArea(tile_org, numtracks_orig, 1);
1341 }
1342
1343 TILE_AREA_LOOP(tile, update_reservation_area) {
1344 /* Don't even try to make eye candy parts reserved. */
1345 if (IsStationTileBlocked(tile)) continue;
1346
1347 DiagDirection dir = AxisToDiagDir(axis);
1348 TileIndexDiff tile_offset = TileOffsByDiagDir(dir);
1349 TileIndex platform_begin = tile;
1350 TileIndex platform_end = tile;
1351
1352 /* We can only account for tiles that are reachable from this tile, so ignore primarily blocked tiles while finding the platform begin and end. */
1353 for (TileIndex next_tile = platform_begin - tile_offset; IsCompatibleTrainStationTile(next_tile, platform_begin); next_tile -= tile_offset) {
1354 platform_begin = next_tile;
1355 }
1356 for (TileIndex next_tile = platform_end + tile_offset; IsCompatibleTrainStationTile(next_tile, platform_end); next_tile += tile_offset) {
1357 platform_end = next_tile;
1358 }
1359
1360 /* If there is at least on reservation on the platform, we reserve the whole platform. */
1361 bool reservation = false;
1362 for (TileIndex t = platform_begin; !reservation && t <= platform_end; t += tile_offset) {
1363 reservation = HasStationReservation(t);
1364 }
1365
1366 if (reservation) {
1367 SetRailStationPlatformReservation(platform_begin, dir, true);
1368 }
1369 }
1370
1371 st->MarkTilesDirty(false);
1372 st->UpdateVirtCoord();
1373 UpdateStationAcceptance(st, false);
1374 st->RecomputeIndustriesNear();
1375 InvalidateWindowData(WC_SELECT_STATION, 0, 0);
1376 InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
1377 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
1378 DirtyCompanyInfrastructureWindows(st->owner);
1379 }
1380
1381 return cost;
1382 }
1383
1384 static void MakeRailStationAreaSmaller(BaseStation *st)
1385 {
1386 TileArea ta = st->train_station;
1387
1388 restart:
1389
1390 /* too small? */
1391 if (ta.w != 0 && ta.h != 0) {
1392 /* check the left side, x = constant, y changes */
1393 for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(0, i));) {
1394 /* the left side is unused? */
1395 if (++i == ta.h) {
1396 ta.tile += TileDiffXY(1, 0);
1397 ta.w--;
1398 goto restart;
1399 }
1400 }
1401
1402 /* check the right side, x = constant, y changes */
1403 for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(ta.w - 1, i));) {
1404 /* the right side is unused? */
1405 if (++i == ta.h) {
1406 ta.w--;
1407 goto restart;
1408 }
1409 }
1410
1411 /* check the upper side, y = constant, x changes */
1412 for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, 0));) {
1413 /* the left side is unused? */
1414 if (++i == ta.w) {
1415 ta.tile += TileDiffXY(0, 1);
1416 ta.h--;
1417 goto restart;
1418 }
1419 }
1420
1421 /* check the lower side, y = constant, x changes */
1422 for (uint i = 0; !st->TileBelongsToRailStation(ta.tile + TileDiffXY(i, ta.h - 1));) {
1423 /* the left side is unused? */
1424 if (++i == ta.w) {
1425 ta.h--;
1426 goto restart;
1427 }
1428 }
1429 } else {
1430 ta.Clear();
1431 }
1432
1433 st->train_station = ta;
1434 }
1435
1446 template <class T>
1447 CommandCost RemoveFromRailBaseStation(TileArea ta, SmallVector<T *, 4> &affected_stations, DoCommandFlag flags, Money removal_cost, bool keep_rail)
1448 {
1449 /* Count of the number of tiles removed */
1450 int quantity = 0;
1451 CommandCost total_cost(EXPENSES_CONSTRUCTION);
1452 /* Accumulator for the errors seen during clearing. If no errors happen,
1453 * and the quantity is 0 there is no station. Otherwise it will be one
1454 * of the other error that got accumulated. */
1455 CommandCost error;
1456
1457 /* Do the action for every tile into the area */
1458 TILE_AREA_LOOP(tile, ta) {
1459 /* Make sure the specified tile is a rail station */
1460 if (!HasStationTileRail(tile)) continue;
1461
1462 /* If there is a vehicle on ground, do not allow to remove (flood) the tile */
1463 CommandCost ret = EnsureNoVehicleOnGround(tile);
1464 error.AddCost(ret);
1465 if (ret.Failed()) continue;
1466
1467 /* Check ownership of station */
1468 T *st = T::GetByTile(tile);
1469 if (st == NULL) continue;
1470
1471 if (_current_company != OWNER_WATER) {
1472 CommandCost ret = CheckOwnership(st->owner);
1473 error.AddCost(ret);
1474 if (ret.Failed()) continue;
1475 }
1476
1477 /* If we reached here, the tile is valid so increase the quantity of tiles we will remove */
1478 quantity++;
1479
1480 if (keep_rail || IsStationTileBlocked(tile)) {
1481 /* Don't refund the 'steel' of the track when we keep the
1482 * rail, or when the tile didn't have any rail at all. */
1483 total_cost.AddCost(-_price[PR_CLEAR_RAIL]);
1484 }
1485
1486 if (flags & DC_EXEC) {
1487 /* read variables before the station tile is removed */
1488 uint specindex = GetCustomStationSpecIndex(tile);
1489 Track track = GetRailStationTrack(tile);
1490 Owner owner = GetTileOwner(tile);
1491 RailType rt = GetRailType(tile);
1492 Train *v = NULL;
1493
1494 if (HasStationReservation(tile)) {
1495 v = GetTrainForReservation(tile, track);
1496 if (v != NULL) {
1497 /* Free train reservation. */
1498 FreeTrainTrackReservation(v);
1499 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), false);
1500 Vehicle *temp = v;
1501 for (; temp->Next() != NULL; temp = temp->Next()) { }
1502 if (IsRailStationTile(temp->tile)) SetRailStationPlatformReservation(temp->tile, TrackdirToExitdir(ReverseTrackdir(temp->GetVehicleTrackdir())), false);
1503 }
1504 }
1505
1506 bool build_rail = keep_rail && !IsStationTileBlocked(tile);
1507 if (!build_rail && !IsStationTileBlocked(tile)) Company::Get(owner)->infrastructure.rail[rt]--;
1508
1509 DoClearSquare(tile);
1510 DeleteNewGRFInspectWindow(GSF_STATIONS, tile);
1511 if (build_rail) MakeRailNormal(tile, owner, TrackToTrackBits(track), rt);
1512 Company::Get(owner)->infrastructure.station--;
1513 DirtyCompanyInfrastructureWindows(owner);
1514
1515 st->rect.AfterRemoveTile(st, tile);
1516 AddTrackToSignalBuffer(tile, track, owner);
1517 YapfNotifyTrackLayoutChange(tile, track);
1518
1519 DeallocateSpecFromStation(st, specindex);
1520
1521 affected_stations.Include(st);
1522
1523 if (v != NULL) {
1524 /* Restore station reservation. */
1525 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(v->GetVehicleTrackdir()), true);
1526 TryPathReserve(v, true, true);
1527 for (; v->Next() != NULL; v = v->Next()) { }
1528 if (IsRailStationTile(v->tile)) SetRailStationPlatformReservation(v->tile, TrackdirToExitdir(ReverseTrackdir(v->GetVehicleTrackdir())), true);
1529 }
1530 }
1531 }
1532
1533 if (quantity == 0) return error.Failed() ? error : CommandCost(STR_ERROR_THERE_IS_NO_STATION);
1534
1535 for (T **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
1536 T *st = *stp;
1537
1538 /* now we need to make the "spanned" area of the railway station smaller
1539 * if we deleted something at the edges.
1540 * we also need to adjust train_tile. */
1541 MakeRailStationAreaSmaller(st);
1542 UpdateStationSignCoord(st);
1543
1544 /* if we deleted the whole station, delete the train facility. */
1545 if (st->train_station.tile == INVALID_TILE) {
1546 st->facilities &= ~FACIL_TRAIN;
1547 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
1548 st->UpdateVirtCoord();
1549 DeleteStationIfEmpty(st);
1550 }
1551 }
1552
1553 total_cost.AddCost(quantity * removal_cost);
1554 return total_cost;
1555 }
1556
1568 CommandCost CmdRemoveFromRailStation(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1569 {
1570 TileIndex end = p1 == 0 ? start : p1;
1571 if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
1572
1573 TileArea ta(start, end);
1574 SmallVector<Station *, 4> affected_stations;
1575
1576 CommandCost ret = RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_STATION_RAIL], HasBit(p2, 0));
1577 if (ret.Failed()) return ret;
1578
1579 /* Do all station specific functions here. */
1580 for (Station **stp = affected_stations.Begin(); stp != affected_stations.End(); stp++) {
1581 Station *st = *stp;
1582
1583 if (st->train_station.tile == INVALID_TILE) SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
1584 st->MarkTilesDirty(false);
1585 st->RecomputeIndustriesNear();
1586 }
1587
1588 /* Now apply the rail cost to the number that we deleted */
1589 return ret;
1590 }
1591
1603 CommandCost CmdRemoveFromRailWaypoint(TileIndex start, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1604 {
1605 TileIndex end = p1 == 0 ? start : p1;
1606 if (start >= MapSize() || end >= MapSize()) return CMD_ERROR;
1607
1608 TileArea ta(start, end);
1609 SmallVector<Waypoint *, 4> affected_stations;
1610
1611 return RemoveFromRailBaseStation(ta, affected_stations, flags, _price[PR_CLEAR_WAYPOINT_RAIL], HasBit(p2, 0));
1612 }
1613
1614
1622 template <class T>
1623 CommandCost RemoveRailStation(T *st, DoCommandFlag flags)
1624 {
1625 /* Current company owns the station? */
1626 if (_current_company != OWNER_WATER) {
1627 CommandCost ret = CheckOwnership(st->owner);
1628 if (ret.Failed()) return ret;
1629 }
1630
1631 /* determine width and height of platforms */
1632 TileArea ta = st->train_station;
1633
1634 assert(ta.w != 0 && ta.h != 0);
1635
1636 CommandCost cost(EXPENSES_CONSTRUCTION);
1637 /* clear all areas of the station */
1638 TILE_AREA_LOOP(tile, ta) {
1639 /* only remove tiles that are actually train station tiles */
1640 if (!st->TileBelongsToRailStation(tile)) continue;
1641
1642 CommandCost ret = EnsureNoVehicleOnGround(tile);
1643 if (ret.Failed()) return ret;
1644
1645 cost.AddCost(_price[PR_CLEAR_STATION_RAIL]);
1646 if (flags & DC_EXEC) {
1647 /* read variables before the station tile is removed */
1648 Track track = GetRailStationTrack(tile);
1649 Owner owner = GetTileOwner(tile); // _current_company can be OWNER_WATER
1650 Train *v = NULL;
1651 if (HasStationReservation(tile)) {
1652 v = GetTrainForReservation(tile, track);
1653 if (v != NULL) FreeTrainTrackReservation(v);
1654 }
1655 if (!IsStationTileBlocked(tile)) Company::Get(owner)->infrastructure.rail[GetRailType(tile)]--;
1656 Company::Get(owner)->infrastructure.station--;
1657 DoClearSquare(tile);
1658 DeleteNewGRFInspectWindow(GSF_STATIONS, tile);
1659 AddTrackToSignalBuffer(tile, track, owner);
1660 YapfNotifyTrackLayoutChange(tile, track);
1661 if (v != NULL) TryPathReserve(v, true);
1662 }
1663 }
1664
1665 if (flags & DC_EXEC) {
1666 st->rect.AfterRemoveRect(st, st->train_station);
1667
1668 st->train_station.Clear();
1669
1670 st->facilities &= ~FACIL_TRAIN;
1671
1672 free(st->speclist);
1673 st->num_specs = 0;
1674 st->speclist = NULL;
1675 st->cached_anim_triggers = 0;
1676
1677 DirtyCompanyInfrastructureWindows(st->owner);
1678 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_TRAINS);
1679 st->UpdateVirtCoord();
1680 DeleteStationIfEmpty(st);
1681 }
1682
1683 return cost;
1684 }
1685
1692 static CommandCost RemoveRailStation(TileIndex tile, DoCommandFlag flags)
1693 {
1694 /* if there is flooding, remove platforms tile by tile */
1695 if (_current_company == OWNER_WATER) {
1696 return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_STATION);
1697 }
1698
1699 Station *st = Station::GetByTile(tile);
1700 CommandCost cost = RemoveRailStation(st, flags);
1701
1702 if (flags & DC_EXEC) st->RecomputeIndustriesNear();
1703
1704 return cost;
1705 }
1706
1713 static CommandCost RemoveRailWaypoint(TileIndex tile, DoCommandFlag flags)
1714 {
1715 /* if there is flooding, remove waypoints tile by tile */
1716 if (_current_company == OWNER_WATER) {
1717 return DoCommand(tile, 0, 0, DC_EXEC, CMD_REMOVE_FROM_RAIL_WAYPOINT);
1718 }
1719
1720 return RemoveRailStation(Waypoint::GetByTile(tile), flags);
1721 }
1722
1723
1729 static RoadStop **FindRoadStopSpot(bool truck_station, Station *st)
1730 {
1731 RoadStop **primary_stop = (truck_station) ? &st->truck_stops : &st->bus_stops;
1732
1733 if (*primary_stop == NULL) {
1734 /* we have no roadstop of the type yet, so write a "primary stop" */
1735 return primary_stop;
1736 } else {
1737 /* there are stops already, so append to the end of the list */
1738 RoadStop *stop = *primary_stop;
1739 while (stop->next != NULL) stop = stop->next;
1740 return &stop->next;
1741 }
1742 }
1743
1744 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags);
1745
1755 static CommandCost FindJoiningRoadStop(StationID existing_stop, StationID station_to_join, bool adjacent, TileArea ta, Station **st)
1756 {
1757 return FindJoiningBaseStation<Station, STR_ERROR_MUST_REMOVE_ROAD_STOP_FIRST>(existing_stop, station_to_join, adjacent, ta, st);
1758 }
1759
1776 CommandCost CmdBuildRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1777 {
1778 bool type = HasBit(p2, 0);
1779 bool is_drive_through = HasBit(p2, 1);
1780 RoadTypes rts = Extract<RoadTypes, 2, 2>(p2);
1781 StationID station_to_join = GB(p2, 16, 16);
1782 bool reuse = (station_to_join != NEW_STATION);
1783 if (!reuse) station_to_join = INVALID_STATION;
1784 bool distant_join = (station_to_join != INVALID_STATION);
1785
1786 uint8 width = (uint8)GB(p1, 0, 8);
1787 uint8 lenght = (uint8)GB(p1, 8, 8);
1788
1789 /* Check if the requested road stop is too big */
1790 if (width > _settings_game.station.station_spread || lenght > _settings_game.station.station_spread) return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
1791 /* Check for incorrect width / length. */
1792 if (width == 0 || lenght == 0) return CMD_ERROR;
1793 /* Check if the first tile and the last tile are valid */
1794 if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, lenght - 1) == INVALID_TILE) return CMD_ERROR;
1795
1796 TileArea roadstop_area(tile, width, lenght);
1797
1798 if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
1799
1800 if (!HasExactlyOneBit(rts) || !HasRoadTypesAvail(_current_company, rts)) return CMD_ERROR;
1801
1802 /* Trams only have drive through stops */
1803 if (!is_drive_through && HasBit(rts, ROADTYPE_TRAM)) return CMD_ERROR;
1804
1805 DiagDirection ddir;
1806 Axis axis;
1807 if (is_drive_through) {
1808 /* By definition axis is valid, due to there being 2 axes and reading 1 bit. */
1809 axis = Extract<Axis, 6, 1>(p2);
1810 ddir = AxisToDiagDir(axis);
1811 } else {
1812 /* By definition ddir is valid, due to there being 4 diagonal directions and reading 2 bits. */
1813 ddir = Extract<DiagDirection, 6, 2>(p2);
1814 axis = DiagDirToAxis(ddir);
1815 }
1816
1817 CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
1818 if (ret.Failed()) return ret;
1819
1820 /* Total road stop cost. */
1821 CommandCost cost(EXPENSES_CONSTRUCTION, roadstop_area.w * roadstop_area.h * _price[type ? PR_BUILD_STATION_TRUCK : PR_BUILD_STATION_BUS]);
1822 StationID est = INVALID_STATION;
1823 ret = CheckFlatLandRoadStop(roadstop_area, flags, is_drive_through ? 5 << axis : 1 << ddir, is_drive_through, type, axis, &est, rts);
1824 if (ret.Failed()) return ret;
1825 cost.AddCost(ret);
1826
1827 Station *st = NULL;
1828 ret = FindJoiningRoadStop(est, station_to_join, HasBit(p2, 5), roadstop_area, &st);
1829 if (ret.Failed()) return ret;
1830
1831 /* Check if this number of road stops can be allocated. */
1832 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);
1833
1834 ret = BuildStationPart(&st, flags, reuse, roadstop_area, STATIONNAMING_ROAD);
1835 if (ret.Failed()) return ret;
1836
1837 if (flags & DC_EXEC) {
1838 /* Check every tile in the area. */
1839 TILE_AREA_LOOP(cur_tile, roadstop_area) {
1840 RoadTypes cur_rts = GetRoadTypes(cur_tile);
1841 Owner road_owner = HasBit(cur_rts, ROADTYPE_ROAD) ? GetRoadOwner(cur_tile, ROADTYPE_ROAD) : _current_company;
1842 Owner tram_owner = HasBit(cur_rts, ROADTYPE_TRAM) ? GetRoadOwner(cur_tile, ROADTYPE_TRAM) : _current_company;
1843
1844 if (IsTileType(cur_tile, MP_STATION) && IsRoadStop(cur_tile)) {
1845 RemoveRoadStop(cur_tile, flags);
1846 }
1847
1848 RoadStop *road_stop = new RoadStop(cur_tile);
1849 /* Insert into linked list of RoadStops. */
1850 RoadStop **currstop = FindRoadStopSpot(type, st);
1851 *currstop = road_stop;
1852
1853 if (type) {
1854 st->truck_station.Add(cur_tile);
1855 } else {
1856 st->bus_station.Add(cur_tile);
1857 }
1858
1859 /* Initialize an empty station. */
1860 st->AddFacility((type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, cur_tile);
1861
1862 st->rect.BeforeAddTile(cur_tile, StationRect::ADD_TRY);
1863
1864 RoadStopType rs_type = type ? ROADSTOP_TRUCK : ROADSTOP_BUS;
1865 if (is_drive_through) {
1866 /* Update company infrastructure counts. If the current tile is a normal
1867 * road tile, count only the new road bits needed to get a full diagonal road. */
1868 RoadType rt;
1869 FOR_EACH_SET_ROADTYPE(rt, cur_rts | rts) {
1870 Company *c = Company::GetIfValid(rt == ROADTYPE_ROAD ? road_owner : tram_owner);
1871 if (c != NULL) {
1872 c->infrastructure.road[rt] += 2 - (IsNormalRoadTile(cur_tile) && HasBit(cur_rts, rt) ? CountBits(GetRoadBits(cur_tile, rt)) : 0);
1873 DirtyCompanyInfrastructureWindows(c->index);
1874 }
1875 }
1876
1877 MakeDriveThroughRoadStop(cur_tile, st->owner, road_owner, tram_owner, st->index, rs_type, rts | cur_rts, axis);
1878 road_stop->MakeDriveThrough();
1879 } else {
1880 /* Non-drive-through stop never overbuild and always count as two road bits. */
1881 Company::Get(st->owner)->infrastructure.road[FIND_FIRST_BIT(rts)] += 2;
1882 MakeRoadStop(cur_tile, st->owner, st->index, rs_type, rts, ddir);
1883 }
1884 Company::Get(st->owner)->infrastructure.station++;
1885 DirtyCompanyInfrastructureWindows(st->owner);
1886
1887 MarkTileDirtyByTile(cur_tile);
1888 }
1889 }
1890
1891 if (st != NULL) {
1892 st->UpdateVirtCoord();
1893 UpdateStationAcceptance(st, false);
1894 st->RecomputeIndustriesNear();
1895 InvalidateWindowData(WC_SELECT_STATION, 0, 0);
1896 InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
1897 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ROADVEHS);
1898 }
1899 return cost;
1900 }
1901
1902
1903 static Vehicle *ClearRoadStopStatusEnum(Vehicle *v, void *)
1904 {
1905 if (v->type == VEH_ROAD) {
1906 /* Okay... we are a road vehicle on a drive through road stop.
1907 * But that road stop has just been removed, so we need to make
1908 * sure we are in a valid state... however, vehicles can also
1909 * turn on road stop tiles, so only clear the 'road stop' state
1910 * bits and only when the state was 'in road stop', otherwise
1911 * we'll end up clearing the turn around bits. */
1912 RoadVehicle *rv = RoadVehicle::From(v);
1913 if (HasBit(rv->state, RVS_IN_DT_ROAD_STOP)) rv->state &= RVSB_ROAD_STOP_TRACKDIR_MASK;
1914 }
1915
1916 return NULL;
1917 }
1918
1919
1926 static CommandCost RemoveRoadStop(TileIndex tile, DoCommandFlag flags)
1927 {
1928 Station *st = Station::GetByTile(tile);
1929
1930 if (_current_company != OWNER_WATER) {
1931 CommandCost ret = CheckOwnership(st->owner);
1932 if (ret.Failed()) return ret;
1933 }
1934
1935 bool is_truck = IsTruckStop(tile);
1936
1937 RoadStop **primary_stop;
1938 RoadStop *cur_stop;
1939 if (is_truck) { // truck stop
1940 primary_stop = &st->truck_stops;
1941 cur_stop = RoadStop::GetByTile(tile, ROADSTOP_TRUCK);
1942 } else {
1943 primary_stop = &st->bus_stops;
1944 cur_stop = RoadStop::GetByTile(tile, ROADSTOP_BUS);
1945 }
1946
1947 assert(cur_stop != NULL);
1948
1949 /* don't do the check for drive-through road stops when company bankrupts */
1950 if (IsDriveThroughStopTile(tile) && (flags & DC_BANKRUPT)) {
1951 /* remove the 'going through road stop' status from all vehicles on that tile */
1952 if (flags & DC_EXEC) FindVehicleOnPos(tile, NULL, &ClearRoadStopStatusEnum);
1953 } else {
1954 CommandCost ret = EnsureNoVehicleOnGround(tile);
1955 if (ret.Failed()) return ret;
1956 }
1957
1958 if (flags & DC_EXEC) {
1959 if (*primary_stop == cur_stop) {
1960 /* removed the first stop in the list */
1961 *primary_stop = cur_stop->next;
1962 /* removed the only stop? */
1963 if (*primary_stop == NULL) {
1964 st->facilities &= (is_truck ? ~FACIL_TRUCK_STOP : ~FACIL_BUS_STOP);
1965 }
1966 } else {
1967 /* tell the predecessor in the list to skip this stop */
1968 RoadStop *pred = *primary_stop;
1969 while (pred->next != cur_stop) pred = pred->next;
1970 pred->next = cur_stop->next;
1971 }
1972
1973 /* Update company infrastructure counts. */
1974 RoadType rt;
1975 FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(tile)) {
1976 Company *c = Company::GetIfValid(GetRoadOwner(tile, rt));
1977 if (c != NULL) {
1978 c->infrastructure.road[rt] -= 2;
1979 DirtyCompanyInfrastructureWindows(c->index);
1980 }
1981 }
1982 Company::Get(st->owner)->infrastructure.station--;
1983
1984 if (IsDriveThroughStopTile(tile)) {
1985 /* Clears the tile for us */
1986 cur_stop->ClearDriveThrough();
1987 } else {
1988 DoClearSquare(tile);
1989 }
1990
1991 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_ROADVEHS);
1992 delete cur_stop;
1993
1994 /* Make sure no vehicle is going to the old roadstop */
1995 RoadVehicle *v;
1996 FOR_ALL_ROADVEHICLES(v) {
1997 if (v->First() == v && v->current_order.IsType(OT_GOTO_STATION) &&
1998 v->dest_tile == tile) {
1999 v->dest_tile = v->GetOrderStationLocation(st->index);
2000 }
2001 }
2002
2003 st->rect.AfterRemoveTile(st, tile);
2004
2005 st->UpdateVirtCoord();
2006 st->RecomputeIndustriesNear();
2007 DeleteStationIfEmpty(st);
2008
2009 /* Update the tile area of the truck/bus stop */
2010 if (is_truck) {
2011 st->truck_station.Clear();
2012 for (const RoadStop *rs = st->truck_stops; rs != NULL; rs = rs->next) st->truck_station.Add(rs->xy);
2013 } else {
2014 st->bus_station.Clear();
2015 for (const RoadStop *rs = st->bus_stops; rs != NULL; rs = rs->next) st->bus_station.Add(rs->xy);
2016 }
2017 }
2018
2019 return CommandCost(EXPENSES_CONSTRUCTION, _price[is_truck ? PR_CLEAR_STATION_TRUCK : PR_CLEAR_STATION_BUS]);
2020 }
2021
2032 CommandCost CmdRemoveRoadStop(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2033 {
2034 uint8 width = (uint8)GB(p1, 0, 8);
2035 uint8 height = (uint8)GB(p1, 8, 8);
2036
2037 /* Check for incorrect width / height. */
2038 if (width == 0 || height == 0) return CMD_ERROR;
2039 /* Check if the first tile and the last tile are valid */
2040 if (!IsValidTile(tile) || TileAddWrap(tile, width - 1, height - 1) == INVALID_TILE) return CMD_ERROR;
2041
2042 TileArea roadstop_area(tile, width, height);
2043
2044 int quantity = 0;
2045 CommandCost cost(EXPENSES_CONSTRUCTION);
2046 TILE_AREA_LOOP(cur_tile, roadstop_area) {
2047 /* Make sure the specified tile is a road stop of the correct type */
2048 if (!IsTileType(cur_tile, MP_STATION) || !IsRoadStop(cur_tile) || (uint32)GetRoadStopType(cur_tile) != GB(p2, 0, 1)) continue;
2049
2050 /* Save the stop info before it is removed */
2051 bool is_drive_through = IsDriveThroughStopTile(cur_tile);
2052 RoadTypes rts = GetRoadTypes(cur_tile);
2053 RoadBits road_bits = IsDriveThroughStopTile(cur_tile) ?
2054 ((GetRoadStopDir(cur_tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y) :
2055 DiagDirToRoadBits(GetRoadStopDir(cur_tile));
2056
2057 Owner road_owner = GetRoadOwner(cur_tile, ROADTYPE_ROAD);
2058 Owner tram_owner = GetRoadOwner(cur_tile, ROADTYPE_TRAM);
2059 CommandCost ret = RemoveRoadStop(cur_tile, flags);
2060 if (ret.Failed()) return ret;
2061 cost.AddCost(ret);
2062
2063 quantity++;
2064 /* If the stop was a drive-through stop replace the road */
2065 if ((flags & DC_EXEC) && is_drive_through) {
2066 MakeRoadNormal(cur_tile, road_bits, rts, ClosestTownFromTile(cur_tile, UINT_MAX)->index,
2067 road_owner, tram_owner);
2068
2069 /* Update company infrastructure counts. */
2070 RoadType rt;
2071 FOR_EACH_SET_ROADTYPE(rt, rts) {
2072 Company *c = Company::GetIfValid(GetRoadOwner(cur_tile, rt));
2073 if (c != NULL) {
2074 c->infrastructure.road[rt] += CountBits(road_bits);
2075 DirtyCompanyInfrastructureWindows(c->index);
2076 }
2077 }
2078 }
2079 }
2080
2081 if (quantity == 0) return_cmd_error(STR_ERROR_THERE_IS_NO_STATION);
2082
2083 return cost;
2084 }
2085
2092 static uint GetMinimalAirportDistanceToTile(TileIterator &it, TileIndex town_tile)
2093 {
2094 uint mindist = UINT_MAX;
2095
2096 for (TileIndex cur_tile = it; cur_tile != INVALID_TILE; cur_tile = ++it) {
2097 mindist = min(mindist, DistanceManhattan(town_tile, cur_tile));
2098 }
2099
2100 return mindist;
2101 }
2102
2112 uint8 GetAirportNoiseLevelForTown(const AirportSpec *as, TileIterator &it, TileIndex town_tile)
2113 {
2114 /* 0 cannot be accounted, and 1 is the lowest that can be reduced from town.
2115 * So no need to go any further*/
2116 if (as->noise_level < 2) return as->noise_level;
2117
2118 uint distance = GetMinimalAirportDistanceToTile(it, town_tile);
2119
2120 /* The steps for measuring noise reduction are based on the "magical" (and arbitrary) 8 base distance
2121 * adding the town_council_tolerance 4 times, as a way to graduate, depending of the tolerance.
2122 * Basically, it says that the less tolerant a town is, the bigger the distance before
2123 * an actual decrease can be granted */
2124 uint8 town_tolerance_distance = 8 + (_settings_game.difficulty.town_council_tolerance * 4);
2125
2126 /* now, we want to have the distance segmented using the distance judged bareable by town
2127 * This will give us the coefficient of reduction the distance provides. */
2128 uint noise_reduction = distance / town_tolerance_distance;
2129
2130 /* If the noise reduction equals the airport noise itself, don't give it for free.
2131 * Otherwise, simply reduce the airport's level. */
2132 return noise_reduction >= as->noise_level ? 1 : as->noise_level - noise_reduction;
2133 }
2134
2142 Town *AirportGetNearestTown(const AirportSpec *as, const TileIterator &it)
2143 {
2144 Town *t, *nearest = NULL;
2145 uint add = as->size_x + as->size_y - 2; // GetMinimalAirportDistanceToTile can differ from DistanceManhattan by this much
2146 uint mindist = UINT_MAX - add; // prevent overflow
2147 FOR_ALL_TOWNS(t) {
2148 if (DistanceManhattan(t->xy, it) < mindist + add) { // avoid calling GetMinimalAirportDistanceToTile too often
2149 TileIterator *copy = it.Clone();
2150 uint dist = GetMinimalAirportDistanceToTile(*copy, t->xy);
2151 delete copy;
2152 if (dist < mindist) {
2153 nearest = t;
2154 mindist = dist;
2155 }
2156 }
2157 }
2158
2159 return nearest;
2160 }
2161
2162
2164 void UpdateAirportsNoise()
2165 {
2166 Town *t;
2167 const Station *st;
2168
2169 FOR_ALL_TOWNS(t) t->noise_reached = 0;
2170
2171 FOR_ALL_STATIONS(st) {
2172 if (st->airport.tile != INVALID_TILE && st->airport.type != AT_OILRIG) {
2173 const AirportSpec *as = st->airport.GetSpec();
2174 AirportTileIterator it(st);
2175 Town *nearest = AirportGetNearestTown(as, it);
2176 nearest->noise_reached += GetAirportNoiseLevelForTown(as, it, nearest->xy);
2177 }
2178 }
2179 }
2180
2194 CommandCost CmdBuildAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2195 {
2196 StationID station_to_join = GB(p2, 16, 16);
2197 bool reuse = (station_to_join != NEW_STATION);
2198 if (!reuse) station_to_join = INVALID_STATION;
2199 bool distant_join = (station_to_join != INVALID_STATION);
2200 byte airport_type = GB(p1, 0, 8);
2201 byte layout = GB(p1, 8, 8);
2202
2203 if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
2204
2205 if (airport_type >= NUM_AIRPORTS) return CMD_ERROR;
2206
2207 CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
2208 if (ret.Failed()) return ret;
2209
2210 /* Check if a valid, buildable airport was chosen for construction */
2211 const AirportSpec *as = AirportSpec::Get(airport_type);
2212 if (!as->IsAvailable() || layout >= as->num_table) return CMD_ERROR;
2213
2214 Direction rotation = as->rotation[layout];
2215 int w = as->size_x;
2216 int h = as->size_y;
2217 if (rotation == DIR_E || rotation == DIR_W) Swap(w, h);
2218 TileArea airport_area = TileArea(tile, w, h);
2219
2220 if (w > _settings_game.station.station_spread || h > _settings_game.station.station_spread) {
2221 return_cmd_error(STR_ERROR_STATION_TOO_SPREAD_OUT);
2222 }
2223
2224 CommandCost cost = CheckFlatLand(airport_area, flags);
2225 if (cost.Failed()) return cost;
2226
2227 /* The noise level is the noise from the airport and reduce it to account for the distance to the town center. */
2228 AirportTileTableIterator iter(as->table[layout], tile);
2229 Town *nearest = AirportGetNearestTown(as, iter);
2230 uint newnoise_level = GetAirportNoiseLevelForTown(as, iter, nearest->xy);
2231
2232 /* Check if local auth would allow a new airport */
2233 StringID authority_refuse_message = STR_NULL;
2234 Town *authority_refuse_town = NULL;
2235
2236 if (_settings_game.economy.station_noise_level) {
2237 /* do not allow to build a new airport if this raise the town noise over the maximum allowed by town */
2238 if ((nearest->noise_reached + newnoise_level) > nearest->MaxTownNoise()) {
2239 authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_NOISE;
2240 authority_refuse_town = nearest;
2241 }
2242 } else {
2243 Town *t = ClosestTownFromTile(tile, UINT_MAX);
2244 uint num = 0;
2245 const Station *st;
2246 FOR_ALL_STATIONS(st) {
2247 if (st->town == t && (st->facilities & FACIL_AIRPORT) && st->airport.type != AT_OILRIG) num++;
2248 }
2249 if (num >= 2) {
2250 authority_refuse_message = STR_ERROR_LOCAL_AUTHORITY_REFUSES_AIRPORT;
2251 authority_refuse_town = t;
2252 }
2253 }
2254
2255 if (authority_refuse_message != STR_NULL) {
2256 SetDParam(0, authority_refuse_town->index);
2257 return_cmd_error(authority_refuse_message);
2258 }
2259
2260 Station *st = NULL;
2261 ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p2, 0), airport_area, &st);
2262 if (ret.Failed()) return ret;
2263
2264 /* Distant join */
2265 if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
2266
2267 ret = BuildStationPart(&st, flags, reuse, airport_area, (GetAirport(airport_type)->flags & AirportFTAClass::AIRPLANES) ? STATIONNAMING_AIRPORT : STATIONNAMING_HELIPORT);
2268 if (ret.Failed()) return ret;
2269
2270 if (st != NULL && st->airport.tile != INVALID_TILE) {
2271 return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_AIRPORT);
2272 }
2273
2274 for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
2275 cost.AddCost(_price[PR_BUILD_STATION_AIRPORT]);
2276 }
2277
2278 if (flags & DC_EXEC) {
2279 /* Always add the noise, so there will be no need to recalculate when option toggles */
2280 nearest->noise_reached += newnoise_level;
2281
2282 st->AddFacility(FACIL_AIRPORT, tile);
2283 st->airport.type = airport_type;
2284 st->airport.layout = layout;
2285 st->airport.flags = 0;
2286 st->airport.rotation = rotation;
2287
2288 st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TRY);
2289
2290 for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
2291 MakeAirport(iter, st->owner, st->index, iter.GetStationGfx(), WATER_CLASS_INVALID);
2292 SetStationTileRandomBits(iter, GB(Random(), 0, 4));
2293 st->airport.Add(iter);
2294
2295 if (AirportTileSpec::Get(GetTranslatedAirportTileID(iter.GetStationGfx()))->animation.status != ANIM_STATUS_NO_ANIMATION) AddAnimatedTile(iter);
2296 }
2297
2298 /* Only call the animation trigger after all tiles have been built */
2299 for (AirportTileTableIterator iter(as->table[layout], tile); iter != INVALID_TILE; ++iter) {
2300 AirportTileAnimationTrigger(st, iter, AAT_BUILT);
2301 }
2302
2303 UpdateAirplanesOnNewStation(st);
2304
2305 Company::Get(st->owner)->infrastructure.airport++;
2306 DirtyCompanyInfrastructureWindows(st->owner);
2307
2308 st->UpdateVirtCoord();
2309 UpdateStationAcceptance(st, false);
2310 st->RecomputeIndustriesNear();
2311 InvalidateWindowData(WC_SELECT_STATION, 0, 0);
2312 InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
2313 InvalidateWindowData(WC_STATION_VIEW, st->index, -1);
2314
2315 if (_settings_game.economy.station_noise_level) {
2316 SetWindowDirty(WC_TOWN_VIEW, st->town->index);
2317 }
2318 }
2319
2320 return cost;
2321 }
2322
2329 static CommandCost RemoveAirport(TileIndex tile, DoCommandFlag flags)
2330 {
2331 Station *st = Station::GetByTile(tile);
2332
2333 if (_current_company != OWNER_WATER) {
2334 CommandCost ret = CheckOwnership(st->owner);
2335 if (ret.Failed()) return ret;
2336 }
2337
2338 tile = st->airport.tile;
2339
2340 CommandCost cost(EXPENSES_CONSTRUCTION);
2341
2342 const Aircraft *a;
2343 FOR_ALL_AIRCRAFT(a) {
2344 if (!a->IsNormalAircraft()) continue;
2345 if (a->targetairport == st->index && a->state != FLYING) return CMD_ERROR;
2346 }
2347
2348 if (flags & DC_EXEC) {
2349 const AirportSpec *as = st->airport.GetSpec();
2350 /* The noise level is the noise from the airport and reduce it to account for the distance to the town center.
2351 * And as for construction, always remove it, even if the setting is not set, in order to avoid the
2352 * need of recalculation */
2353 AirportTileIterator it(st);
2354 Town *nearest = AirportGetNearestTown(as, it);
2355 nearest->noise_reached -= GetAirportNoiseLevelForTown(as, it, nearest->xy);
2356 }
2357
2358 TILE_AREA_LOOP(tile_cur, st->airport) {
2359 if (!st->TileBelongsToAirport(tile_cur)) continue;
2360
2361 CommandCost ret = EnsureNoVehicleOnGround(tile_cur);
2362 if (ret.Failed()) return ret;
2363
2364 cost.AddCost(_price[PR_CLEAR_STATION_AIRPORT]);
2365
2366 if (flags & DC_EXEC) {
2367 if (IsHangarTile(tile_cur)) OrderBackup::Reset(tile_cur, false);
2368 DeleteAnimatedTile(tile_cur);
2369 DoClearSquare(tile_cur);
2370 DeleteNewGRFInspectWindow(GSF_AIRPORTTILES, tile_cur);
2371 }
2372 }
2373
2374 if (flags & DC_EXEC) {
2375 /* Clear the persistent storage. */
2376 delete st->airport.psa;
2377
2378 for (uint i = 0; i < st->airport.GetNumHangars(); ++i) {
2379 DeleteWindowById(
2380 WC_VEHICLE_DEPOT, st->airport.GetHangarTile(i)
2381 );
2382 }
2383
2384 st->rect.AfterRemoveRect(st, st->airport);
2385
2386 st->airport.Clear();
2387 st->facilities &= ~FACIL_AIRPORT;
2388
2389 InvalidateWindowData(WC_STATION_VIEW, st->index, -1);
2390
2391 if (_settings_game.economy.station_noise_level) {
2392 SetWindowDirty(WC_TOWN_VIEW, st->town->index);
2393 }
2394
2395 Company::Get(st->owner)->infrastructure.airport--;
2396 DirtyCompanyInfrastructureWindows(st->owner);
2397
2398 st->UpdateVirtCoord();
2399 st->RecomputeIndustriesNear();
2400 DeleteStationIfEmpty(st);
2401 DeleteNewGRFInspectWindow(GSF_AIRPORTS, st->index);
2402 }
2403
2404 return cost;
2405 }
2406
2416 CommandCost CmdOpenCloseAirport(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2417 {
2418 if (!Station::IsValidID(p1)) return CMD_ERROR;
2419 Station *st = Station::Get(p1);
2420
2421 if (!(st->facilities & FACIL_AIRPORT) || st->owner == OWNER_NONE) return CMD_ERROR;
2422
2423 CommandCost ret = CheckOwnership(st->owner);
2424 if (ret.Failed()) return ret;
2425
2426 if (flags & DC_EXEC) {
2427 st->airport.flags ^= AIRPORT_CLOSED_block;
2428 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_CLOSE_AIRPORT);
2429 }
2430 return CommandCost();
2431 }
2432
2439 bool HasStationInUse(StationID station, bool include_company, CompanyID company)
2440 {
2441 const Vehicle *v;
2442 FOR_ALL_VEHICLES(v) {
2443 if ((v->owner == company) == include_company) {
2444 const Order *order;
2445 FOR_VEHICLE_ORDERS(v, order) {
2446 if ((order->IsType(OT_GOTO_STATION) || order->IsType(OT_GOTO_WAYPOINT)) && order->GetDestination() == station) {
2447 return true;
2448 }
2449 }
2450 }
2451 }
2452 return false;
2453 }
2454
2455 static const TileIndexDiffC _dock_tileoffs_chkaround[] = {
2456 {-1, 0},
2457 { 0, 0},
2458 { 0, 0},
2459 { 0, -1}
2460 };
2461 static const byte _dock_w_chk[4] = { 2, 1, 2, 1 };
2462 static const byte _dock_h_chk[4] = { 1, 2, 1, 2 };
2463
2473 CommandCost CmdBuildDock(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2474 {
2475 StationID station_to_join = GB(p2, 16, 16);
2476 bool reuse = (station_to_join != NEW_STATION);
2477 if (!reuse) station_to_join = INVALID_STATION;
2478 bool distant_join = (station_to_join != INVALID_STATION);
2479
2480 if (distant_join && (!_settings_game.station.distant_join_stations || !Station::IsValidID(station_to_join))) return CMD_ERROR;
2481
2482 DiagDirection direction = GetInclinedSlopeDirection(GetTileSlope(tile));
2483 if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2484 direction = ReverseDiagDir(direction);
2485
2486 /* Docks cannot be placed on rapids */
2487 if (HasTileWaterGround(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2488
2489 CommandCost ret = CheckIfAuthorityAllowsNewStation(tile, flags);
2490 if (ret.Failed()) return ret;
2491
2492 if (IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
2493
2494 ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
2495 if (ret.Failed()) return ret;
2496
2497 TileIndex tile_cur = tile + TileOffsByDiagDir(direction);
2498
2499 if (!IsTileType(tile_cur, MP_WATER) || !IsTileFlat(tile_cur)) {
2500 return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2501 }
2502
2503 if (IsBridgeAbove(tile_cur)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
2504
2505 /* Get the water class of the water tile before it is cleared.*/
2506 WaterClass wc = GetWaterClass(tile_cur);
2507
2508 ret = DoCommand(tile_cur, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
2509 if (ret.Failed()) return ret;
2510
2511 tile_cur += TileOffsByDiagDir(direction);
2512 if (!IsTileType(tile_cur, MP_WATER) || !IsTileFlat(tile_cur)) {
2513 return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
2514 }
2515
2516 TileArea dock_area = TileArea(tile + ToTileIndexDiff(_dock_tileoffs_chkaround[direction]),
2517 _dock_w_chk[direction], _dock_h_chk[direction]);
2518
2519 /* middle */
2520 Station *st = NULL;
2521 ret = FindJoiningStation(INVALID_STATION, station_to_join, HasBit(p1, 0), dock_area, &st);
2522 if (ret.Failed()) return ret;
2523
2524 /* Distant join */
2525 if (st == NULL && distant_join) st = Station::GetIfValid(station_to_join);
2526
2527 ret = BuildStationPart(&st, flags, reuse, dock_area, STATIONNAMING_DOCK);
2528 if (ret.Failed()) return ret;
2529
2530 if (st != NULL && st->dock_tile != INVALID_TILE) return_cmd_error(STR_ERROR_TOO_CLOSE_TO_ANOTHER_DOCK);
2531
2532 if (flags & DC_EXEC) {
2533 st->dock_tile = tile;
2534 st->AddFacility(FACIL_DOCK, tile);
2535
2536 st->rect.BeforeAddRect(dock_area.tile, dock_area.w, dock_area.h, StationRect::ADD_TRY);
2537
2538 /* If the water part of the dock is on a canal, update infrastructure counts.
2539 * This is needed as we've unconditionally cleared that tile before. */
2540 if (wc == WATER_CLASS_CANAL) {
2541 Company::Get(st->owner)->infrastructure.water++;
2542 }
2543 Company::Get(st->owner)->infrastructure.station += 2;
2544 DirtyCompanyInfrastructureWindows(st->owner);
2545
2546 MakeDock(tile, st->owner, st->index, direction, wc);
2547
2548 st->UpdateVirtCoord();
2549 UpdateStationAcceptance(st, false);
2550 st->RecomputeIndustriesNear();
2551 InvalidateWindowData(WC_SELECT_STATION, 0, 0);
2552 InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
2553 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_SHIPS);
2554 }
2555
2556 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_STATION_DOCK]);
2557 }
2558
2565 static CommandCost RemoveDock(TileIndex tile, DoCommandFlag flags)
2566 {
2567 Station *st = Station::GetByTile(tile);
2568 CommandCost ret = CheckOwnership(st->owner);
2569 if (ret.Failed()) return ret;
2570
2571 TileIndex docking_location = TILE_ADD(st->dock_tile, ToTileIndexDiff(GetDockOffset(st->dock_tile)));
2572
2573 TileIndex tile1 = st->dock_tile;
2574 TileIndex tile2 = tile1 + TileOffsByDiagDir(GetDockDirection(tile1));
2575
2576 ret = EnsureNoVehicleOnGround(tile1);
2577 if (ret.Succeeded()) ret = EnsureNoVehicleOnGround(tile2);
2578 if (ret.Failed()) return ret;
2579
2580 if (flags & DC_EXEC) {
2581 DoClearSquare(tile1);
2582 MarkTileDirtyByTile(tile1);
2583 MakeWaterKeepingClass(tile2, st->owner);
2584
2585 st->rect.AfterRemoveTile(st, tile1);
2586 st->rect.AfterRemoveTile(st, tile2);
2587
2588 st->dock_tile = INVALID_TILE;
2589 st->facilities &= ~FACIL_DOCK;
2590
2591 Company::Get(st->owner)->infrastructure.station -= 2;
2592 DirtyCompanyInfrastructureWindows(st->owner);
2593
2594 SetWindowWidgetDirty(WC_STATION_VIEW, st->index, WID_SV_SHIPS);
2595 st->UpdateVirtCoord();
2596 st->RecomputeIndustriesNear();
2597 DeleteStationIfEmpty(st);
2598
2599 /* All ships that were going to our station, can't go to it anymore.
2600 * Just clear the order, then automatically the next appropriate order
2601 * will be selected and in case of no appropriate order it will just
2602 * wander around the world. */
2603 Ship *s;
2604 FOR_ALL_SHIPS(s) {
2605 if (s->current_order.IsType(OT_LOADING) && s->tile == docking_location) {
2606 s->LeaveStation();
2607 }
2608
2609 if (s->dest_tile == docking_location) {
2610 s->dest_tile = 0;
2611 s->current_order.Free();
2612 }
2613 }
2614 }
2615
2616 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_STATION_DOCK]);
2617 }
2618
2619 #include "table/station_land.h"
2620
2621 const DrawTileSprites *GetStationTileLayout(StationType st, byte gfx)
2622 {
2623 return &_station_display_datas[st][gfx];
2624 }
2625
2635 bool SplitGroundSpriteForOverlay(const TileInfo *ti, SpriteID *ground, RailTrackOffset *overlay_offset)
2636 {
2637 bool snow_desert;
2638 switch (*ground) {
2639 case SPR_RAIL_TRACK_X:
2640 snow_desert = false;
2641 *overlay_offset = RTO_X;
2642 break;
2643
2644 case SPR_RAIL_TRACK_Y:
2645 snow_desert = false;
2646 *overlay_offset = RTO_Y;
2647 break;
2648
2649 case SPR_RAIL_TRACK_X_SNOW:
2650 snow_desert = true;
2651 *overlay_offset = RTO_X;
2652 break;
2653
2654 case SPR_RAIL_TRACK_Y_SNOW:
2655 snow_desert = true;
2656 *overlay_offset = RTO_Y;
2657 break;
2658
2659 default:
2660 return false;
2661 }
2662
2663 if (ti != NULL) {
2664 /* Decide snow/desert from tile */
2665 switch (_settings_game.game_creation.landscape) {
2666 case LT_ARCTIC:
2667 snow_desert = (uint)ti->z > GetSnowLine() * TILE_HEIGHT;
2668 break;
2669
2670 case LT_TROPIC:
2671 snow_desert = GetTropicZone(ti->tile) == TROPICZONE_DESERT;
2672 break;
2673
2674 default:
2675 break;
2676 }
2677 }
2678
2679 *ground = snow_desert ? SPR_FLAT_SNOW_DESERT_TILE : SPR_FLAT_GRASS_TILE;
2680 return true;
2681 }
2682
2683 static void DrawTile_Station(TileInfo *ti)
2684 {
2685 const NewGRFSpriteLayout *layout = NULL;
2686 DrawTileSprites tmp_rail_layout;
2687 const DrawTileSprites *t = NULL;
2688 RoadTypes roadtypes;
2689 int32 total_offset;
2690 const RailtypeInfo *rti = NULL;
2691 uint32 relocation = 0;
2692 uint32 ground_relocation = 0;
2693 BaseStation *st = NULL;
2694 const StationSpec *statspec = NULL;
2695 uint tile_layout = 0;
2696
2697 if (HasStationRail(ti->tile)) {
2698 rti = GetRailTypeInfo(GetRailType(ti->tile));
2699 roadtypes = ROADTYPES_NONE;
2700 total_offset = rti->GetRailtypeSpriteOffset();
2701
2702 if (IsCustomStationSpecIndex(ti->tile)) {
2703 /* look for customization */
2704 st = BaseStation::GetByTile(ti->tile);
2705 statspec = st->speclist[GetCustomStationSpecIndex(ti->tile)].spec;
2706
2707 if (statspec != NULL) {
2708 tile_layout = GetStationGfx(ti->tile);
2709
2710 if (HasBit(statspec->callback_mask, CBM_STATION_SPRITE_LAYOUT)) {
2711 uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0, 0, statspec, st, ti->tile);
2712 if (callback != CALLBACK_FAILED) tile_layout = (callback & ~1) + GetRailStationAxis(ti->tile);
2713 }
2714
2715 /* Ensure the chosen tile layout is valid for this custom station */
2716 if (statspec->renderdata != NULL) {
2717 layout = &statspec->renderdata[tile_layout < statspec->tiles ? tile_layout : (uint)GetRailStationAxis(ti->tile)];
2718 if (!layout->NeedsPreprocessing()) {
2719 t = layout;
2720 layout = NULL;
2721 }
2722 }
2723 }
2724 }
2725 } else {
2726 roadtypes = IsRoadStop(ti->tile) ? GetRoadTypes(ti->tile) : ROADTYPES_NONE;
2727 total_offset = 0;
2728 }
2729
2730 StationGfx gfx = GetStationGfx(ti->tile);
2731 if (IsAirport(ti->tile)) {
2732 gfx = GetAirportGfx(ti->tile);
2733 if (gfx >= NEW_AIRPORTTILE_OFFSET) {
2734 const AirportTileSpec *ats = AirportTileSpec::Get(gfx);
2735 if (ats->grf_prop.spritegroup[0] != NULL && DrawNewAirportTile(ti, Station::GetByTile(ti->tile), gfx, ats)) {
2736 return;
2737 }
2738 /* No sprite group (or no valid one) found, meaning no graphics associated.
2739 * Use the substitute one instead */
2740 assert(ats->grf_prop.subst_id != INVALID_AIRPORTTILE);
2741 gfx = ats->grf_prop.subst_id;
2742 }
2743 switch (gfx) {
2744 case APT_RADAR_GRASS_FENCE_SW:
2745 t = &_station_display_datas_airport_radar_grass_fence_sw[GetAnimationFrame(ti->tile)];
2746 break;
2747 case APT_GRASS_FENCE_NE_FLAG:
2748 t = &_station_display_datas_airport_flag_grass_fence_ne[GetAnimationFrame(ti->tile)];
2749 break;
2750 case APT_RADAR_FENCE_SW:
2751 t = &_station_display_datas_airport_radar_fence_sw[GetAnimationFrame(ti->tile)];
2752 break;
2753 case APT_RADAR_FENCE_NE:
2754 t = &_station_display_datas_airport_radar_fence_ne[GetAnimationFrame(ti->tile)];
2755 break;
2756 case APT_GRASS_FENCE_NE_FLAG_2:
2757 t = &_station_display_datas_airport_flag_grass_fence_ne_2[GetAnimationFrame(ti->tile)];
2758 break;
2759 }
2760 }
2761
2762 Owner owner = GetTileOwner(ti->tile);
2763
2764 PaletteID palette;
2765 if (Company::IsValidID(owner)) {
2766 palette = COMPANY_SPRITE_COLOUR(owner);
2767 } else {
2768 /* Some stations are not owner by a company, namely oil rigs */
2769 palette = PALETTE_TO_GREY;
2770 }
2771
2772 if (layout == NULL && (t == NULL || t->seq == NULL)) t = GetStationTileLayout(GetStationType(ti->tile), gfx);
2773
2774 /* don't show foundation for docks */
2775 if (ti->tileh != SLOPE_FLAT && !IsDock(ti->tile)) {
2776 if (statspec != NULL && HasBit(statspec->flags, SSF_CUSTOM_FOUNDATIONS)) {
2777 /* Station has custom foundations.
2778 * Check whether the foundation continues beyond the tile's upper sides. */
2779 uint edge_info = 0;
2780 int z;
2781 Slope slope = GetFoundationPixelSlope(ti->tile, &z);
2782 if (!HasFoundationNW(ti->tile, slope, z)) SetBit(edge_info, 0);
2783 if (!HasFoundationNE(ti->tile, slope, z)) SetBit(edge_info, 1);
2784 SpriteID image = GetCustomStationFoundationRelocation(statspec, st, ti->tile, tile_layout, edge_info);
2785 if (image == 0) goto draw_default_foundation;
2786
2787 if (HasBit(statspec->flags, SSF_EXTENDED_FOUNDATIONS)) {
2788 /* Station provides extended foundations. */
2789
2790 static const uint8 foundation_parts[] = {
2791 0, 0, 0, 0, // Invalid, Invalid, Invalid, SLOPE_SW
2792 0, 1, 2, 3, // Invalid, SLOPE_EW, SLOPE_SE, SLOPE_WSE
2793 0, 4, 5, 6, // Invalid, SLOPE_NW, SLOPE_NS, SLOPE_NWS
2794 7, 8, 9 // SLOPE_NE, SLOPE_ENW, SLOPE_SEN
2795 };
2796
2797 AddSortableSpriteToDraw(image + foundation_parts[ti->tileh], PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
2798 } else {
2799 /* Draw simple foundations, built up from 8 possible foundation sprites. */
2800
2801 /* Each set bit represents one of the eight composite sprites to be drawn.
2802 * 'Invalid' entries will not drawn but are included for completeness. */
2803 static const uint8 composite_foundation_parts[] = {
2804 /* Invalid (00000000), Invalid (11010001), Invalid (11100100), SLOPE_SW (11100000) */
2805 0x00, 0xD1, 0xE4, 0xE0,
2806 /* Invalid (11001010), SLOPE_EW (11001001), SLOPE_SE (11000100), SLOPE_WSE (11000000) */
2807 0xCA, 0xC9, 0xC4, 0xC0,
2808 /* Invalid (11010010), SLOPE_NW (10010001), SLOPE_NS (11100100), SLOPE_NWS (10100000) */
2809 0xD2, 0x91, 0xE4, 0xA0,
2810 /* SLOPE_NE (01001010), SLOPE_ENW (00001001), SLOPE_SEN (01000100) */
2811 0x4A, 0x09, 0x44
2812 };
2813
2814 uint8 parts = composite_foundation_parts[ti->tileh];
2815
2816 /* If foundations continue beyond the tile's upper sides then
2817 * mask out the last two pieces. */
2818 if (HasBit(edge_info, 0)) ClrBit(parts, 6);
2819 if (HasBit(edge_info, 1)) ClrBit(parts, 7);
2820
2821 if (parts == 0) {
2822 /* We always have to draw at least one sprite to make sure there is a boundingbox and a sprite with the
2823 * correct offset for the childsprites.
2824 * So, draw the (completely empty) sprite of the default foundations. */
2825 goto draw_default_foundation;
2826 }
2827
2828 StartSpriteCombine();
2829 for (int i = 0; i < 8; i++) {
2830 if (HasBit(parts, i)) {
2831 AddSortableSpriteToDraw(image + i, PAL_NONE, ti->x, ti->y, 16, 16, 7, ti->z);
2832 }
2833 }
2834 EndSpriteCombine();
2835 }
2836
2837 OffsetGroundSprite(31, 1);
2838 ti->z += ApplyPixelFoundationToSlope(FOUNDATION_LEVELED, &ti->tileh);
2839 } else {
2840 draw_default_foundation:
2841 DrawFoundation(ti, FOUNDATION_LEVELED);
2842 }
2843 }
2844
2845 if (IsBuoy(ti->tile)) {
2846 DrawWaterClassGround(ti);
2847 SpriteID sprite = GetCanalSprite(CF_BUOY, ti->tile);
2848 if (sprite != 0) total_offset = sprite - SPR_IMG_BUOY;
2849 } else if (IsDock(ti->tile) || (IsOilRig(ti->tile) && IsTileOnWater(ti->tile))) {
2850 if (ti->tileh == SLOPE_FLAT) {
2851 DrawWaterClassGround(ti);
2852 } else {
2853 assert(IsDock(ti->tile));
2854 TileIndex water_tile = ti->tile + TileOffsByDiagDir(GetDockDirection(ti->tile));
2855 WaterClass wc = GetWaterClass(water_tile);
2856 if (wc == WATER_CLASS_SEA) {
2857 DrawShoreTile(ti->tileh);
2858 } else {
2859 DrawClearLandTile(ti, 3);
2860 }
2861 }
2862 } else {
2863 if (layout != NULL) {
2864 /* Sprite layout which needs preprocessing */
2865 bool separate_ground = HasBit(statspec->flags, SSF_SEPARATE_GROUND);
2866 uint32 var10_values = layout->PrepareLayout(total_offset, rti->fallback_railtype, 0, 0, separate_ground);
2867 uint8 var10;
2868 FOR_EACH_SET_BIT(var10, var10_values) {
2869 uint32 var10_relocation = GetCustomStationRelocation(statspec, st, ti->tile, var10);
2870 layout->ProcessRegisters(var10, var10_relocation, separate_ground);
2871 }
2872 tmp_rail_layout.seq = layout->GetLayout(&tmp_rail_layout.ground);
2873 t = &tmp_rail_layout;
2874 total_offset = 0;
2875 } else if (statspec != NULL) {
2876 /* Simple sprite layout */
2877 ground_relocation = relocation = GetCustomStationRelocation(statspec, st, ti->tile, 0);
2878 if (HasBit(statspec->flags, SSF_SEPARATE_GROUND)) {
2879 ground_relocation = GetCustomStationRelocation(statspec, st, ti->tile, 1);
2880 }
2881 ground_relocation += rti->fallback_railtype;
2882 }
2883
2884 SpriteID image = t->ground.sprite;
2885 PaletteID pal = t->ground.pal;
2886 RailTrackOffset overlay_offset;
2887 if (rti != NULL && rti->UsesOverlay() && SplitGroundSpriteForOverlay(ti, &image, &overlay_offset)) {
2888 SpriteID ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND);
2889 DrawGroundSprite(image, PAL_NONE);
2890 DrawGroundSprite(ground + overlay_offset, PAL_NONE);
2891
2892 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationReservation(ti->tile)) {
2893 SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
2894 DrawGroundSprite(overlay + overlay_offset, PALETTE_CRASH);
2895 }
2896 } else {
2897 image += HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? ground_relocation : total_offset;
2898 if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += ground_relocation;
2899 DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, palette));
2900
2901 /* PBS debugging, draw reserved tracks darker */
2902 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationRail(ti->tile) && HasStationReservation(ti->tile)) {
2903 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
2904 DrawGroundSprite(GetRailStationAxis(ti->tile) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
2905 }
2906 }
2907 }
2908
2909 if (HasStationRail(ti->tile) && HasCatenaryDrawn(GetRailType(ti->tile))) DrawCatenary(ti);
2910
2911 if (HasBit(roadtypes, ROADTYPE_TRAM)) {
2912 Axis axis = GetRoadStopDir(ti->tile) == DIAGDIR_NE ? AXIS_X : AXIS_Y;
2913 DrawGroundSprite((HasBit(roadtypes, ROADTYPE_ROAD) ? SPR_TRAMWAY_OVERLAY : SPR_TRAMWAY_TRAM) + (axis ^ 1), PAL_NONE);
2914 DrawTramCatenary(ti, axis == AXIS_X ? ROAD_X : ROAD_Y);
2915 }
2916
2917 if (IsRailWaypoint(ti->tile)) {
2918 /* Don't offset the waypoint graphics; they're always the same. */
2919 total_offset = 0;
2920 }
2921
2922 DrawRailTileSeq(ti, t, TO_BUILDINGS, total_offset, relocation, palette);
2923 }
2924
2925 void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, RoadType roadtype, int image)
2926 {
2927 int32 total_offset = 0;
2928 PaletteID pal = COMPANY_SPRITE_COLOUR(_local_company);
2929 const DrawTileSprites *t = GetStationTileLayout(st, image);
2930 const RailtypeInfo *rti = NULL;
2931
2932 if (railtype != INVALID_RAILTYPE) {
2933 rti = GetRailTypeInfo(railtype);
2934 total_offset = rti->GetRailtypeSpriteOffset();
2935 }
2936
2937 SpriteID img = t->ground.sprite;
2938 RailTrackOffset overlay_offset;
2939 if (rti != NULL && rti->UsesOverlay() && SplitGroundSpriteForOverlay(NULL, &img, &overlay_offset)) {
2940 SpriteID ground = GetCustomRailSprite(rti, INVALID_TILE, RTSG_GROUND);
2941 DrawSprite(img, PAL_NONE, x, y);
2942 DrawSprite(ground + overlay_offset, PAL_NONE, x, y);
2943 } else {
2944 DrawSprite(img + total_offset, HasBit(img, PALETTE_MODIFIER_COLOUR) ? pal : PAL_NONE, x, y);
2945 }
2946
2947 if (roadtype == ROADTYPE_TRAM) {
2948 DrawSprite(SPR_TRAMWAY_TRAM + (t->ground.sprite == SPR_ROAD_PAVED_STRAIGHT_X ? 1 : 0), PAL_NONE, x, y);
2949 }
2950
2951 /* Default waypoint has no railtype specific sprites */
2952 DrawRailTileSeqInGUI(x, y, t, st == STATION_WAYPOINT ? 0 : total_offset, 0, pal);
2953 }
2954
2955 static int GetSlopePixelZ_Station(TileIndex tile, uint x, uint y)
2956 {
2957 return GetTileMaxPixelZ(tile);
2958 }
2959
2960 static Foundation GetFoundation_Station(TileIndex tile, Slope tileh)
2961 {
2962 return FlatteningFoundation(tileh);
2963 }
2964
2965 static void GetTileDesc_Station(TileIndex tile, TileDesc *td)
2966 {
2967 td->owner[0] = GetTileOwner(tile);
2968 if (IsDriveThroughStopTile(tile)) {
2969 Owner road_owner = INVALID_OWNER;
2970 Owner tram_owner = INVALID_OWNER;
2971 RoadTypes rts = GetRoadTypes(tile);
2972 if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
2973 if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
2974
2975 /* Is there a mix of owners? */
2976 if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
2977 (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
2978 uint i = 1;
2979 if (road_owner != INVALID_OWNER) {
2980 td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
2981 td->owner[i] = road_owner;
2982 i++;
2983 }
2984 if (tram_owner != INVALID_OWNER) {
2985 td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
2986 td->owner[i] = tram_owner;
2987 }
2988 }
2989 }
2990 td->build_date = BaseStation::GetByTile(tile)->build_date;
2991
2992 if (HasStationTileRail(tile)) {
2993 const StationSpec *spec = GetStationSpec(tile);
2994
2995 if (spec != NULL) {
2996 td->station_class = StationClass::Get(spec->cls_id)->name;
2997 td->station_name = spec->name;
2998
2999 if (spec->grf_prop.grffile != NULL) {
3000 const GRFConfig *gc = GetGRFConfig(spec->grf_prop.grffile->grfid);
3001 td->grf = gc->GetName();
3002 }
3003 }
3004
3005 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
3006 td->rail_speed = rti->max_speed;
3007 }
3008
3009 if (IsAirport(tile)) {
3010 const AirportSpec *as = Station::GetByTile(tile)->airport.GetSpec();
3011 td->airport_class = AirportClass::Get(as->cls_id)->name;
3012 td->airport_name = as->name;
3013
3014 const AirportTileSpec *ats = AirportTileSpec::GetByTile(tile);
3015 td->airport_tile_name = ats->name;
3016
3017 if (as->grf_prop.grffile != NULL) {
3018 const GRFConfig *gc = GetGRFConfig(as->grf_prop.grffile->grfid);
3019 td->grf = gc->GetName();
3020 } else if (ats->grf_prop.grffile != NULL) {
3021 const GRFConfig *gc = GetGRFConfig(ats->grf_prop.grffile->grfid);
3022 td->grf = gc->GetName();
3023 }
3024 }
3025
3026 StringID str;
3027 switch (GetStationType(tile)) {
3028 default: NOT_REACHED();
3029 case STATION_RAIL: str = STR_LAI_STATION_DESCRIPTION_RAILROAD_STATION; break;
3030 case STATION_AIRPORT:
3031 str = (IsHangar(tile) ? STR_LAI_STATION_DESCRIPTION_AIRCRAFT_HANGAR : STR_LAI_STATION_DESCRIPTION_AIRPORT);
3032 break;
3033 case STATION_TRUCK: str = STR_LAI_STATION_DESCRIPTION_TRUCK_LOADING_AREA; break;
3034 case STATION_BUS: str = STR_LAI_STATION_DESCRIPTION_BUS_STATION; break;
3035 case STATION_OILRIG: str = STR_INDUSTRY_NAME_OIL_RIG; break;
3036 case STATION_DOCK: str = STR_LAI_STATION_DESCRIPTION_SHIP_DOCK; break;
3037 case STATION_BUOY: str = STR_LAI_STATION_DESCRIPTION_BUOY; break;
3038 case STATION_WAYPOINT: str = STR_LAI_STATION_DESCRIPTION_WAYPOINT; break;
3039 }
3040 td->str = str;
3041 }
3042
3043
3044 static TrackStatus GetTileTrackStatus_Station(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
3045 {
3046 TrackBits trackbits = TRACK_BIT_NONE;
3047
3048 switch (mode) {
3049 case TRANSPORT_RAIL:
3050 if (HasStationRail(tile) && !IsStationTileBlocked(tile)) {
3051 trackbits = TrackToTrackBits(GetRailStationTrack(tile));
3052 }
3053 break;
3054
3055 case TRANSPORT_WATER:
3056 /* buoy is coded as a station, it is always on open water */
3057 if (IsBuoy(tile)) {
3058 trackbits = TRACK_BIT_ALL;
3059 /* remove tracks that connect NE map edge */
3060 if (TileX(tile) == 0) trackbits &= ~(TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_RIGHT);
3061 /* remove tracks that connect NW map edge */
3062 if (TileY(tile) == 0) trackbits &= ~(TRACK_BIT_Y | TRACK_BIT_LEFT | TRACK_BIT_UPPER);
3063 }
3064 break;
3065
3066 case TRANSPORT_ROAD:
3067 if ((GetRoadTypes(tile) & sub_mode) != 0 && IsRoadStop(tile)) {
3068 DiagDirection dir = GetRoadStopDir(tile);
3069 Axis axis = DiagDirToAxis(dir);
3070
3071 if (side != INVALID_DIAGDIR) {
3072 if (axis != DiagDirToAxis(side) || (IsStandardRoadStopTile(tile) && dir != side)) break;
3073 }
3074
3075 trackbits = AxisToTrackBits(axis);
3076 }
3077 break;
3078
3079 default:
3080 break;
3081 }
3082
3083 return CombineTrackStatus(TrackBitsToTrackdirBits(trackbits), TRACKDIR_BIT_NONE);
3084 }
3085
3086
3087 static void TileLoop_Station(TileIndex tile)
3088 {
3089 /* FIXME -- GetTileTrackStatus_Station -> animated stationtiles
3090 * hardcoded.....not good */
3091 switch (GetStationType(tile)) {
3092 case STATION_AIRPORT:
3093 AirportTileAnimationTrigger(Station::GetByTile(tile), tile, AAT_TILELOOP);
3094 break;
3095
3096 case STATION_DOCK:
3097 if (!IsTileFlat(tile)) break; // only handle water part
3098 /* FALL THROUGH */
3099 case STATION_OILRIG: //(station part)
3100 case STATION_BUOY:
3101 TileLoop_Water(tile);
3102 break;
3103
3104 default: break;
3105 }
3106 }
3107
3108
3109 static void AnimateTile_Station(TileIndex tile)
3110 {
3111 if (HasStationRail(tile)) {
3112 AnimateStationTile(tile);
3113 return;
3114 }
3115
3116 if (IsAirport(tile)) {
3117 AnimateAirportTile(tile);
3118 }
3119 }
3120
3121
3122 static bool ClickTile_Station(TileIndex tile)
3123 {
3124 const BaseStation *bst = BaseStation::GetByTile(tile);
3125
3126 if (bst->facilities & FACIL_WAYPOINT) {
3127 ShowWaypointWindow(Waypoint::From(bst));
3128 } else if (IsHangar(tile)) {
3129 const Station *st = Station::From(bst);
3130 ShowDepotWindow(st->airport.GetHangarTile(st->airport.GetHangarNum(tile)), VEH_AIRCRAFT);
3131 } else {
3132 ShowStationViewWindow(bst->index);
3133 }
3134 return true;
3135 }
3136
3137 static VehicleEnterTileStatus VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
3138 {
3139 if (v->type == VEH_TRAIN) {
3140 StationID station_id = GetStationIndex(tile);
3141 if (!v->current_order.ShouldStopAtStation(v, station_id)) return VETSB_CONTINUE;
3142 if (!IsRailStation(tile) || !v->IsFrontEngine()) return VETSB_CONTINUE;
3143
3144 int station_ahead;
3145 int station_length;
3146 int stop = GetTrainStopLocation(station_id, tile, Train::From(v), &station_ahead, &station_length);
3147
3148 /* Stop whenever that amount of station ahead + the distance from the
3149 * begin of the platform to the stop location is longer than the length
3150 * of the platform. Station ahead 'includes' the current tile where the
3151 * vehicle is on, so we need to subtract that. */
3152 if (stop + station_ahead - (int)TILE_SIZE >= station_length) return VETSB_CONTINUE;
3153
3154 DiagDirection dir = DirToDiagDir(v->direction);
3155
3156 x &= 0xF;
3157 y &= 0xF;
3158
3159 if (DiagDirToAxis(dir) != AXIS_X) Swap(x, y);
3160 if (y == TILE_SIZE / 2) {
3161 if (dir != DIAGDIR_SE && dir != DIAGDIR_SW) x = TILE_SIZE - 1 - x;
3162 stop &= TILE_SIZE - 1;
3163
3164 if (x == stop) {
3165 return VETSB_ENTERED_STATION | (VehicleEnterTileStatus)(station_id << VETS_STATION_ID_OFFSET); // enter station
3166 } else if (x < stop) {
3167 v->vehstatus |= VS_TRAIN_SLOWING;
3168 uint16 spd = max(0, (stop - x) * 20 - 15);
3169 if (spd < v->cur_speed) v->cur_speed = spd;
3170 }
3171 }
3172 } else if (v->type == VEH_ROAD) {
3173 RoadVehicle *rv = RoadVehicle::From(v);
3174 if (rv->state < RVSB_IN_ROAD_STOP && !IsReversingRoadTrackdir((Trackdir)rv->state) && rv->frame == 0) {
3175 if (IsRoadStop(tile) && rv->IsFrontEngine()) {
3176 /* Attempt to allocate a parking bay in a road stop */
3177 return RoadStop::GetByTile(tile, GetRoadStopType(tile))->Enter(rv) ? VETSB_CONTINUE : VETSB_CANNOT_ENTER;
3178 }
3179 }
3180 }
3181
3182 return VETSB_CONTINUE;
3183 }
3184
3189 void TriggerWatchedCargoCallbacks(Station *st)
3190 {
3191 /* Collect cargoes accepted since the last big tick. */
3192 uint cargoes = 0;
3193 for (CargoID cid = 0; cid < NUM_CARGO; cid++) {
3194 if (HasBit(st->goods[cid].status, GoodsEntry::GES_ACCEPTED_BIGTICK)) SetBit(cargoes, cid);
3195 }
3196
3197 /* Anything to do? */
3198 if (cargoes == 0) return;
3199
3200 /* Loop over all houses in the catchment. */
3201 Rect r = st->GetCatchmentRect();
3202 TileArea ta(TileXY(r.left, r.top), TileXY(r.right, r.bottom));
3203 TILE_AREA_LOOP(tile, ta) {
3204 if (IsTileType(tile, MP_HOUSE)) {
3205 WatchedCargoCallback(tile, cargoes);
3206 }
3207 }
3208 }
3209
3216 static bool StationHandleBigTick(BaseStation *st)
3217 {
3218 if (!st->IsInUse()) {
3219 if (++st->delete_ctr >= 8) delete st;
3220 return false;
3221 }
3222
3223 if (Station::IsExpected(st)) {
3224 TriggerWatchedCargoCallbacks(Station::From(st));
3225
3226 for (CargoID i = 0; i < NUM_CARGO; i++) {
3227 ClrBit(Station::From(st)->goods[i].status, GoodsEntry::GES_ACCEPTED_BIGTICK);
3228 }
3229 }
3230
3231
3232 if ((st->facilities & FACIL_WAYPOINT) == 0) UpdateStationAcceptance(Station::From(st), true);
3233
3234 return true;
3235 }
3236
3237 static inline void byte_inc_sat(byte *p)
3238 {
3239 byte b = *p + 1;
3240 if (b != 0) *p = b;
3241 }
3242
3249 static void TruncateCargo(const CargoSpec *cs, GoodsEntry *ge, uint amount = UINT_MAX)
3250 {
3251 /* If truncating also punish the source stations' ratings to
3252 * decrease the flow of incoming cargo. */
3253
3254 StationCargoAmountMap waiting_per_source;
3255 ge->cargo.Truncate(amount, &waiting_per_source);
3256 for (StationCargoAmountMap::iterator i(waiting_per_source.begin()); i != waiting_per_source.end(); ++i) {
3257 Station *source_station = Station::GetIfValid(i->first);
3258 if (source_station == NULL) continue;
3259
3260 GoodsEntry &source_ge = source_station->goods[cs->Index()];
3261 source_ge.max_waiting_cargo = max(source_ge.max_waiting_cargo, i->second);
3262 }
3263 }
3264
3265 static void UpdateStationRating(Station *st)
3266 {
3267 bool waiting_changed = false;
3268
3269 byte_inc_sat(&st->time_since_load);
3270 byte_inc_sat(&st->time_since_unload);
3271
3272 const CargoSpec *cs;
3273 FOR_ALL_CARGOSPECS(cs) {
3274 GoodsEntry *ge = &st->goods[cs->Index()];
3275 /* Slowly increase the rating back to his original level in the case we
3276 * didn't deliver cargo yet to this station. This happens when a bribe
3277 * failed while you didn't moved that cargo yet to a station. */
3278 if (!ge->HasRating() && ge->rating < INITIAL_STATION_RATING) {
3279 ge->rating++;
3280 }
3281
3282 /* Only change the rating if we are moving this cargo */
3283 if (ge->HasRating()) {
3284 byte_inc_sat(&ge->time_since_pickup);
3285 if (ge->time_since_pickup == 255 && _settings_game.order.selectgoods) {
3286 ClrBit(ge->status, GoodsEntry::GES_RATING);
3287 ge->last_speed = 0;
3288 TruncateCargo(cs, ge);
3289 waiting_changed = true;
3290 continue;
3291 }
3292
3293 bool skip = false;
3294 int rating = 0;
3295 uint waiting = ge->cargo.TotalCount();
3296
3297 /* num_dests is at least 1 if there is any cargo as
3298 * INVALID_STATION is also a destination.
3299 */
3300 uint num_dests = (uint)ge->cargo.Packets()->MapSize();
3301
3302 /* Average amount of cargo per next hop, but prefer solitary stations
3303 * with only one or two next hops. They are allowed to have more
3304 * cargo waiting per next hop.
3305 * With manual cargo distribution waiting_avg = waiting / 2 as then
3306 * INVALID_STATION is the only destination.
3307 */
3308 uint waiting_avg = waiting / (num_dests + 1);
3309
3310 if (HasBit(cs->callback_mask, CBM_CARGO_STATION_RATING_CALC)) {
3311 /* Perform custom station rating. If it succeeds the speed, days in transit and
3312 * waiting cargo ratings must not be executed. */
3313
3314 /* NewGRFs expect last speed to be 0xFF when no vehicle has arrived yet. */
3315 uint last_speed = ge->HasVehicleEverTriedLoading() ? ge->last_speed : 0xFF;
3316
3317 uint32 var18 = min(ge->time_since_pickup, 0xFF) | (min(ge->max_waiting_cargo, 0xFFFF) << 8) | (min(last_speed, 0xFF) << 24);
3318 /* Convert to the 'old' vehicle types */
3319 uint32 var10 = (st->last_vehicle_type == VEH_INVALID) ? 0x0 : (st->last_vehicle_type + 0x10);
3320 uint16 callback = GetCargoCallback(CBID_CARGO_STATION_RATING_CALC, var10, var18, cs);
3321 if (callback != CALLBACK_FAILED) {
3322 skip = true;
3323 rating = GB(callback, 0, 14);
3324
3325 /* Simulate a 15 bit signed value */
3326 if (HasBit(callback, 14)) rating -= 0x4000;
3327 }
3328 }
3329
3330 if (!skip) {
3331 int b = ge->last_speed - 85;
3332 if (b >= 0) rating += b >> 2;
3333
3334 byte waittime = ge->time_since_pickup;
3335 if (st->last_vehicle_type == VEH_SHIP) waittime >>= 2;
3336 (waittime > 21) ||
3337 (rating += 25, waittime > 12) ||
3338 (rating += 25, waittime > 6) ||
3339 (rating += 45, waittime > 3) ||
3340 (rating += 35, true);
3341
3342 (rating -= 90, ge->max_waiting_cargo > 1500) ||
3343 (rating += 55, ge->max_waiting_cargo > 1000) ||
3344 (rating += 35, ge->max_waiting_cargo > 600) ||
3345 (rating += 10, ge->max_waiting_cargo > 300) ||
3346 (rating += 20, ge->max_waiting_cargo > 100) ||
3347 (rating += 10, true);
3348 }
3349
3350 if (Company::IsValidID(st->owner) && HasBit(st->town->statues, st->owner)) rating += 26;
3351
3352 byte age = ge->last_age;
3353 (age >= 3) ||
3354 (rating += 10, age >= 2) ||
3355 (rating += 10, age >= 1) ||
3356 (rating += 13, true);
3357
3358 {
3359 int or_ = ge->rating; // old rating
3360
3361 /* only modify rating in steps of -2, -1, 0, 1 or 2 */
3362 ge->rating = rating = or_ + Clamp(Clamp(rating, 0, 255) - or_, -2, 2);
3363
3364 /* if rating is <= 64 and more than 100 items waiting on average per destination,
3365 * remove some random amount of goods from the station */
3366 if (rating <= 64 && waiting_avg >= 100) {
3367 int dec = Random() & 0x1F;
3368 if (waiting_avg < 200) dec &= 7;
3369 waiting -= (dec + 1) * num_dests;
3370 waiting_changed = true;
3371 }
3372
3373 /* if rating is <= 127 and there are any items waiting, maybe remove some goods. */
3374 if (rating <= 127 && waiting != 0) {
3375 uint32 r = Random();
3376 if (rating <= (int)GB(r, 0, 7)) {
3377 /* Need to have int, otherwise it will just overflow etc. */
3378 waiting = max((int)waiting - (int)((GB(r, 8, 2) - 1) * num_dests), 0);
3379 waiting_changed = true;
3380 }
3381 }
3382
3383 /* At some point we really must cap the cargo. Previously this
3384 * was a strict 4095, but now we'll have a less strict, but
3385 * increasingly aggressive truncation of the amount of cargo. */
3386 static const uint WAITING_CARGO_THRESHOLD = 1 << 12;
3387 static const uint WAITING_CARGO_CUT_FACTOR = 1 << 6;
3388 static const uint MAX_WAITING_CARGO = 1 << 15;
3389
3390 if (waiting > WAITING_CARGO_THRESHOLD) {
3391 uint difference = waiting - WAITING_CARGO_THRESHOLD;
3392 waiting -= (difference / WAITING_CARGO_CUT_FACTOR);
3393
3394 waiting = min(waiting, MAX_WAITING_CARGO);
3395 waiting_changed = true;
3396 }
3397
3398 /* We can't truncate cargo that's already reserved for loading.
3399 * Thus StoredCount() here. */
3400 if (waiting_changed && waiting < ge->cargo.AvailableCount()) {
3401 /* Feed back the exact own waiting cargo at this station for the
3402 * next rating calculation. */
3403 ge->max_waiting_cargo = 0;
3404
3405 TruncateCargo(cs, ge, ge->cargo.AvailableCount() - waiting);
3406 } else {
3407 /* If the average number per next hop is low, be more forgiving. */
3408 ge->max_waiting_cargo = waiting_avg;
3409 }
3410 }
3411 }
3412 }
3413
3414 StationID index = st->index;
3415 if (waiting_changed) {
3416 SetWindowDirty(WC_STATION_VIEW, index); // update whole window
3417 } else {
3418 SetWindowWidgetDirty(WC_STATION_VIEW, index, WID_SV_ACCEPT_RATING_LIST); // update only ratings list
3419 }
3420 }
3421
3430 void RerouteCargo(Station *st, CargoID c, StationID avoid, StationID avoid2)
3431 {
3432 GoodsEntry &ge = st->goods[c];
3433
3434 /* Reroute cargo in station. */
3435 ge.cargo.Reroute(UINT_MAX, &ge.cargo, avoid, avoid2, &ge);
3436
3437 /* Reroute cargo staged to be transfered. */
3438 for (std::list<Vehicle *>::iterator it(st->loading_vehicles.begin()); it != st->loading_vehicles.end(); ++it) {
3439 for (Vehicle *v = *it; v != NULL; v = v->Next()) {
3440 if (v->cargo_type != c) continue;
3441 v->cargo.Reroute(UINT_MAX, &v->cargo, avoid, avoid2, &ge);
3442 }
3443 }
3444 }
3445
3454 void DeleteStaleLinks(Station *from)
3455 {
3456 for (CargoID c = 0; c < NUM_CARGO; ++c) {
3457 GoodsEntry &ge = from->goods[c];
3458 LinkGraph *lg = LinkGraph::GetIfValid(ge.link_graph);
3459 if (lg == NULL) continue;
3460 Node node = (*lg)[ge.node];
3461 for (EdgeIterator it(node.Begin()); it != node.End();) {
3462 Edge edge = it->second;
3463 Station *to = Station::Get((*lg)[it->first].Station());
3464 assert(to->goods[c].node == it->first);
3465 ++it; // Do that before removing the edge. Anything else may crash.
3466 assert(_date >= edge.LastUpdate());
3467 uint timeout = LinkGraph::MIN_TIMEOUT_DISTANCE + (DistanceManhattan(from->xy, to->xy) >> 3);
3468 if ((uint)(_date - edge.LastUpdate()) > timeout) {
3469 /* Have all vehicles refresh their next hops before deciding to
3470 * remove the node. */
3471 bool updated = false;
3472 OrderList *l;
3473 FOR_ALL_ORDER_LISTS(l) {
3474 bool found_from = false;
3475 bool found_to = false;
3476 for (Order *order = l->GetFirstOrder(); order != NULL; order = order->next) {
3477 if (!order->IsType(OT_GOTO_STATION) && !order->IsType(OT_IMPLICIT)) continue;
3478 if (order->GetDestination() == from->index) {
3479 found_from = true;
3480 if (found_to) break;
3481 } else if (order->GetDestination() == to->index) {
3482 found_to = true;
3483 if (found_from) break;
3484 }
3485 }
3486 if (!found_to || !found_from) continue;
3487 for (Vehicle *v = l->GetFirstSharedVehicle(); !updated && v != NULL; v = v->NextShared()) {
3488 /* There is potential for optimization here:
3489 * - Usually consists of the same order list are the same. It's probably better to
3490 * first check the first of each list, then the second of each list and so on.
3491 * - We could try to figure out if we've seen a consist with the same cargo on the
3492 * same list already and if the consist can actually carry the cargo we're looking
3493 * for. With conditional and refit orders this is not quite trivial, though. */
3494 LinkRefresher::Run(v, false); // Don't allow merging. Otherwise lg might get deleted.
3495 if (edge.LastUpdate() == _date) updated = true;
3496 }
3497 if (updated) break;
3498 }
3499 if (!updated) {
3500 /* If it's still considered dead remove it. */
3501 node.RemoveEdge(to->goods[c].node);
3502 ge.flows.DeleteFlows(to->index);
3503 RerouteCargo(from, c, to->index, from->index);
3504 }
3505 } else if (edge.LastUnrestrictedUpdate() != INVALID_DATE && (uint)(_date - edge.LastUnrestrictedUpdate()) > timeout) {
3506 edge.Restrict();
3507 ge.flows.RestrictFlows(to->index);
3508 RerouteCargo(from, c, to->index, from->index);
3509 } else if (edge.LastRestrictedUpdate() != INVALID_DATE && (uint)(_date - edge.LastRestrictedUpdate()) > timeout) {
3510 edge.Release();
3511 }
3512 }
3513 assert(_date >= lg->LastCompression());
3514 if ((uint)(_date - lg->LastCompression()) > LinkGraph::COMPRESSION_INTERVAL) {
3515 lg->Compress();
3516 }
3517 }
3518 }
3519
3529 void IncreaseStats(Station *st, CargoID cargo, StationID next_station_id, uint capacity, uint usage, EdgeUpdateMode mode)
3530 {
3531 GoodsEntry &ge1 = st->goods[cargo];
3532 Station *st2 = Station::Get(next_station_id);
3533 GoodsEntry &ge2 = st2->goods[cargo];
3534 LinkGraph *lg = NULL;
3535 if (ge1.link_graph == INVALID_LINK_GRAPH) {
3536 if (ge2.link_graph == INVALID_LINK_GRAPH) {
3537 if (LinkGraph::CanAllocateItem()) {
3538 lg = new LinkGraph(cargo);
3539 LinkGraphSchedule::Instance()->Queue(lg);
3540 ge2.link_graph = lg->index;
3541 ge2.node = lg->AddNode(st2);
3542 } else {
3543 DEBUG(misc, 0, "Can't allocate link graph");
3544 }
3545 } else {
3546 lg = LinkGraph::Get(ge2.link_graph);
3547 }
3548 if (lg) {
3549 ge1.link_graph = lg->index;
3550 ge1.node = lg->AddNode(st);
3551 }
3552 } else if (ge2.link_graph == INVALID_LINK_GRAPH) {
3553 lg = LinkGraph::Get(ge1.link_graph);
3554 ge2.link_graph = lg->index;
3555 ge2.node = lg->AddNode(st2);
3556 } else {
3557 lg = LinkGraph::Get(ge1.link_graph);
3558 if (ge1.link_graph != ge2.link_graph) {
3559 LinkGraph *lg2 = LinkGraph::Get(ge2.link_graph);
3560 if (lg->Size() < lg2->Size()) {
3561 LinkGraphSchedule::Instance()->Unqueue(lg);
3562 lg2->Merge(lg); // Updates GoodsEntries of lg
3563 lg = lg2;
3564 } else {
3565 LinkGraphSchedule::Instance()->Unqueue(lg2);
3566 lg->Merge(lg2); // Updates GoodsEntries of lg2
3567 }
3568 }
3569 }
3570 if (lg != NULL) {
3571 (*lg)[ge1.node].UpdateEdge(ge2.node, capacity, usage, mode);
3572 }
3573 }
3574
3581 void IncreaseStats(Station *st, const Vehicle *front, StationID next_station_id)
3582 {
3583 for (const Vehicle *v = front; v != NULL; v = v->Next()) {
3584 if (v->refit_cap > 0) {
3585 /* The cargo count can indeed be higher than the refit_cap if
3586 * wagons have been auto-replaced and subsequently auto-
3587 * refitted to a higher capacity. The cargo gets redistributed
3588 * among the wagons in that case.
3589 * As usage is not such an important figure anyway we just
3590 * ignore the additional cargo then.*/
3591 IncreaseStats(st, v->cargo_type, next_station_id, v->refit_cap,
3592 min(v->refit_cap, v->cargo.StoredCount()), EUM_INCREASE);
3593 }
3594 }
3595 }
3596
3597 /* called for every station each tick */
3598 static void StationHandleSmallTick(BaseStation *st)
3599 {
3600 if ((st->facilities & FACIL_WAYPOINT) != 0 || !st->IsInUse()) return;
3601
3602 byte b = st->delete_ctr + 1;
3603 if (b >= STATION_RATING_TICKS) b = 0;
3604 st->delete_ctr = b;
3605
3606 if (b == 0) UpdateStationRating(Station::From(st));
3607 }
3608
3609 void OnTick_Station()
3610 {
3611 if (_game_mode == GM_EDITOR) return;
3612
3613 BaseStation *st;
3614 FOR_ALL_BASE_STATIONS(st) {
3615 StationHandleSmallTick(st);
3616
3617 /* Clean up the link graph about once a week. */
3618 if (Station::IsExpected(st) && (_tick_counter + st->index) % STATION_LINKGRAPH_TICKS == 0) {
3619 DeleteStaleLinks(Station::From(st));
3620 };
3621
3622 /* Run STATION_ACCEPTANCE_TICKS = 250 tick interval trigger for station animation.
3623 * Station index is included so that triggers are not all done
3624 * at the same time. */
3625 if ((_tick_counter + st->index) % STATION_ACCEPTANCE_TICKS == 0) {
3626 /* Stop processing this station if it was deleted */
3627 if (!StationHandleBigTick(st)) continue;
3628 TriggerStationAnimation(st, st->xy, SAT_250_TICKS);
3629 if (Station::IsExpected(st)) AirportAnimationTrigger(Station::From(st), AAT_STATION_250_TICKS);
3630 }
3631 }
3632 }
3633
3635 void StationMonthlyLoop()
3636 {
3637 Station *st;
3638
3639 FOR_ALL_STATIONS(st) {
3640 for (CargoID i = 0; i < NUM_CARGO; i++) {
3641 GoodsEntry *ge = &st->goods[i];
3642 SB(ge->status, GoodsEntry::GES_LAST_MONTH, 1, GB(ge->status, GoodsEntry::GES_CURRENT_MONTH, 1));
3643 ClrBit(ge->status, GoodsEntry::GES_CURRENT_MONTH);
3644 }
3645 }
3646 }
3647
3648
3649 void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint radius)
3650 {
3651 Station *st;
3652
3653 FOR_ALL_STATIONS(st) {
3654 if (st->owner == owner &&
3655 DistanceManhattan(tile, st->xy) <= radius) {
3656 for (CargoID i = 0; i < NUM_CARGO; i++) {
3657 GoodsEntry *ge = &st->goods[i];
3658
3659 if (ge->status != 0) {
3660 ge->rating = Clamp(ge->rating + amount, 0, 255);
3661 }
3662 }
3663 }
3664 }
3665 }
3666
3667 static uint UpdateStationWaiting(Station *st, CargoID type, uint amount, SourceType source_type, SourceID source_id)
3668 {
3669 /* We can't allocate a CargoPacket? Then don't do anything
3670 * at all; i.e. just discard the incoming cargo. */
3671 if (!CargoPacket::CanAllocateItem()) return 0;
3672
3673 GoodsEntry &ge = st->goods[type];
3674 amount += ge.amount_fract;
3675 ge.amount_fract = GB(amount, 0, 8);
3676
3677 amount >>= 8;
3678 /* No new "real" cargo item yet. */
3679 if (amount == 0) return 0;
3680
3681 StationID next = ge.GetVia(st->index);
3682 ge.cargo.Append(new CargoPacket(st->index, st->xy, amount, source_type, source_id), next);
3683 LinkGraph *lg = NULL;
3684 if (ge.link_graph == INVALID_LINK_GRAPH) {
3685 if (LinkGraph::CanAllocateItem()) {
3686 lg = new LinkGraph(type);
3687 LinkGraphSchedule::Instance()->Queue(lg);
3688 ge.link_graph = lg->index;
3689 ge.node = lg->AddNode(st);
3690 } else {
3691 DEBUG(misc, 0, "Can't allocate link graph");
3692 }
3693 } else {
3694 lg = LinkGraph::Get(ge.link_graph);
3695 }
3696 if (lg != NULL) (*lg)[ge.node].UpdateSupply(amount);
3697
3698 if (!ge.HasRating()) {
3699 InvalidateWindowData(WC_STATION_LIST, st->index);
3700 SetBit(ge.status, GoodsEntry::GES_RATING);
3701 }
3702
3703 TriggerStationRandomisation(st, st->xy, SRT_NEW_CARGO, type);
3704 TriggerStationAnimation(st, st->xy, SAT_NEW_CARGO, type);
3705 AirportAnimationTrigger(st, AAT_STATION_NEW_CARGO, type);
3706
3707 SetWindowDirty(WC_STATION_VIEW, st->index);
3708 st->MarkTilesDirty(true);
3709 return amount;
3710 }
3711
3712 static bool IsUniqueStationName(const char *name)
3713 {
3714 const Station *st;
3715
3716 FOR_ALL_STATIONS(st) {
3717 if (st->name != NULL && strcmp(st->name, name) == 0) return false;
3718 }
3719
3720 return true;
3721 }
3722
3732 CommandCost CmdRenameStation(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
3733 {
3734 Station *st = Station::GetIfValid(p1);
3735 if (st == NULL) return CMD_ERROR;
3736
3737 CommandCost ret = CheckOwnership(st->owner);
3738 if (ret.Failed()) return ret;
3739
3740 bool reset = StrEmpty(text);
3741
3742 if (!reset) {
3743 if (Utf8StringLength(text) >= MAX_LENGTH_STATION_NAME_CHARS) return CMD_ERROR;
3744 if (!IsUniqueStationName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
3745 }
3746
3747 if (flags & DC_EXEC) {
3748 free(st->name);
3749 st->name = reset ? NULL : stredup(text);
3750
3751 st->UpdateVirtCoord();
3752 InvalidateWindowData(WC_STATION_LIST, st->owner, 1);
3753 }
3754
3755 return CommandCost();
3756 }
3757
3764 void FindStationsAroundTiles(const TileArea &location, StationList *stations)
3765 {
3766 /* area to search = producer plus station catchment radius */
3767 uint max_rad = (_settings_game.station.modified_catchment ? MAX_CATCHMENT : CA_UNMODIFIED);
3768
3769 uint x = TileX(location.tile);
3770 uint y = TileY(location.tile);
3771
3772 uint min_x = (x > max_rad) ? x - max_rad : 0;
3773 uint max_x = x + location.w + max_rad;
3774 uint min_y = (y > max_rad) ? y - max_rad : 0;
3775 uint max_y = y + location.h + max_rad;
3776
3777 if (min_x == 0 && _settings_game.construction.freeform_edges) min_x = 1;
3778 if (min_y == 0 && _settings_game.construction.freeform_edges) min_y = 1;
3779 if (max_x >= MapSizeX()) max_x = MapSizeX() - 1;
3780 if (max_y >= MapSizeY()) max_y = MapSizeY() - 1;
3781
3782 for (uint cy = min_y; cy < max_y; cy++) {
3783 for (uint cx = min_x; cx < max_x; cx++) {
3784 TileIndex cur_tile = TileXY(cx, cy);
3785 if (!IsTileType(cur_tile, MP_STATION)) continue;
3786
3787 Station *st = Station::GetByTile(cur_tile);
3788 /* st can be NULL in case of waypoints */
3789 if (st == NULL) continue;
3790
3791 if (_settings_game.station.modified_catchment) {
3792 int rad = st->GetCatchmentRadius();
3793 int rad_x = cx - x;
3794 int rad_y = cy - y;
3795
3796 if (rad_x < -rad || rad_x >= rad + location.w) continue;
3797 if (rad_y < -rad || rad_y >= rad + location.h) continue;
3798 }
3799
3800 /* Insert the station in the set. This will fail if it has
3801 * already been added.
3802 */
3803 stations->Include(st);
3804 }
3805 }
3806 }
3807
3812 const StationList *StationFinder::GetStations()
3813 {
3814 if (this->tile != INVALID_TILE) {
3815 FindStationsAroundTiles(*this, &this->stations);
3816 this->tile = INVALID_TILE;
3817 }
3818 return &this->stations;
3819 }
3820
3821 uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations)
3822 {
3823 /* Return if nothing to do. Also the rounding below fails for 0. */
3824 if (amount == 0) return 0;
3825
3826 Station *st1 = NULL; // Station with best rating
3827 Station *st2 = NULL; // Second best station
3828 uint best_rating1 = 0; // rating of st1
3829 uint best_rating2 = 0; // rating of st2
3830
3831 for (Station * const *st_iter = all_stations->Begin(); st_iter != all_stations->End(); ++st_iter) {
3832 Station *st = *st_iter;
3833
3834 /* Is the station reserved exclusively for somebody else? */
3835 if (st->town->exclusive_counter > 0 && st->town->exclusivity != st->owner) continue;
3836
3837 if (st->goods[type].rating == 0) continue; // Lowest possible rating, better not to give cargo anymore
3838
3839 if (_settings_game.order.selectgoods && !st->goods[type].HasVehicleEverTriedLoading()) continue; // Selectively servicing stations, and not this one
3840
3841 if (IsCargoInClass(type, CC_PASSENGERS)) {
3842 if (st->facilities == FACIL_TRUCK_STOP) continue; // passengers are never served by just a truck stop
3843 } else {
3844 if (st->facilities == FACIL_BUS_STOP) continue; // non-passengers are never served by just a bus stop
3845 }
3846
3847 /* This station can be used, add it to st1/st2 */
3848 if (st1 == NULL || st->goods[type].rating >= best_rating1) {
3849 st2 = st1; best_rating2 = best_rating1; st1 = st; best_rating1 = st->goods[type].rating;
3850 } else if (st2 == NULL || st->goods[type].rating >= best_rating2) {
3851 st2 = st; best_rating2 = st->goods[type].rating;
3852 }
3853 }
3854
3855 /* no stations around at all? */
3856 if (st1 == NULL) return 0;
3857
3858 /* From now we'll calculate with fractal cargo amounts.
3859 * First determine how much cargo we really have. */
3860 amount *= best_rating1 + 1;
3861
3862 if (st2 == NULL) {
3863 /* only one station around */
3864 return UpdateStationWaiting(st1, type, amount, source_type, source_id);
3865 }
3866
3867 /* several stations around, the best two (highest rating) are in st1 and st2 */
3868 assert(st1 != NULL);
3869 assert(st2 != NULL);
3870 assert(best_rating1 != 0 || best_rating2 != 0);
3871
3872 /* Then determine the amount the worst station gets. We do it this way as the
3873 * best should get a bonus, which in this case is the rounding difference from
3874 * this calculation. In reality that will mean the bonus will be pretty low.
3875 * Nevertheless, the best station should always get the most cargo regardless
3876 * of rounding issues. */
3877 uint worst_cargo = amount * best_rating2 / (best_rating1 + best_rating2);
3878 assert(worst_cargo <= (amount - worst_cargo));
3879
3880 /* And then send the cargo to the stations! */
3881 uint moved = UpdateStationWaiting(st1, type, amount - worst_cargo, source_type, source_id);
3882 /* These two UpdateStationWaiting's can't be in the statement as then the order
3883 * of execution would be undefined and that could cause desyncs with callbacks. */
3884 return moved + UpdateStationWaiting(st2, type, worst_cargo, source_type, source_id);
3885 }
3886
3887 void BuildOilRig(TileIndex tile)
3888 {
3889 if (!Station::CanAllocateItem()) {
3890 DEBUG(misc, 0, "Can't allocate station for oilrig at 0x%X, reverting to oilrig only", tile);
3891 return;
3892 }
3893
3894 Station *st = new Station(tile);
3895 st->town = ClosestTownFromTile(tile, UINT_MAX);
3896
3897 st->string_id = GenerateStationName(st, tile, STATIONNAMING_OILRIG);
3898
3899 assert(IsTileType(tile, MP_INDUSTRY));
3900 DeleteAnimatedTile(tile);
3901 MakeOilrig(tile, st->index, GetWaterClass(tile));
3902
3903 st->owner = OWNER_NONE;
3904 st->airport.type = AT_OILRIG;
3905 st->airport.Add(tile);
3906 st->dock_tile = tile;
3907 st->facilities = FACIL_AIRPORT | FACIL_DOCK;
3908 st->build_date = _date;
3909
3910 st->rect.BeforeAddTile(tile, StationRect::ADD_FORCE);
3911
3912 st->UpdateVirtCoord();
3913 UpdateStationAcceptance(st, false);
3914 st->RecomputeIndustriesNear();
3915 }
3916
3917 void DeleteOilRig(TileIndex tile)
3918 {
3919 Station *st = Station::GetByTile(tile);
3920
3921 MakeWaterKeepingClass(tile, OWNER_NONE);
3922
3923 st->dock_tile = INVALID_TILE;
3924 st->airport.Clear();
3925 st->facilities &= ~(FACIL_AIRPORT | FACIL_DOCK);
3926 st->airport.flags = 0;
3927
3928 st->rect.AfterRemoveTile(st, tile);
3929
3930 st->UpdateVirtCoord();
3931 st->RecomputeIndustriesNear();
3932 if (!st->IsInUse()) delete st;
3933 }
3934
3935 static void ChangeTileOwner_Station(TileIndex tile, Owner old_owner, Owner new_owner)
3936 {
3937 if (IsRoadStopTile(tile)) {
3938 for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
3939 /* Update all roadtypes, no matter if they are present */
3940 if (GetRoadOwner(tile, rt) == old_owner) {
3941 if (HasTileRoadType(tile, rt)) {
3942 /* A drive-through road-stop has always two road bits. No need to dirty windows here, we'll redraw the whole screen anyway. */
3943 Company::Get(old_owner)->infrastructure.road[rt] -= 2;
3944 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.road[rt] += 2;
3945 }
3946 SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
3947 }
3948 }
3949 }
3950
3951 if (!IsTileOwner(tile, old_owner)) return;
3952
3953 if (new_owner != INVALID_OWNER) {
3954 /* Update company infrastructure counts. Only do it here
3955 * if the new owner is valid as otherwise the clear
3956 * command will do it for us. No need to dirty windows
3957 * here, we'll redraw the whole screen anyway.*/
3958 Company *old_company = Company::Get(old_owner);
3959 Company *new_company = Company::Get(new_owner);
3960
3961 /* Update counts for underlying infrastructure. */
3962 switch (GetStationType(tile)) {
3963 case STATION_RAIL:
3964 case STATION_WAYPOINT:
3965 if (!IsStationTileBlocked(tile)) {
3966 old_company->infrastructure.rail[GetRailType(tile)]--;
3967 new_company->infrastructure.rail[GetRailType(tile)]++;
3968 }
3969 break;
3970
3971 case STATION_BUS:
3972 case STATION_TRUCK:
3973 /* Road stops were already handled above. */
3974 break;
3975
3976 case STATION_BUOY:
3977 case STATION_DOCK:
3978 if (GetWaterClass(tile) == WATER_CLASS_CANAL) {
3979 old_company->infrastructure.water--;
3980 new_company->infrastructure.water++;
3981 }
3982 break;
3983
3984 default:
3985 break;
3986 }
3987
3988 /* Update station tile count. */
3989 if (!IsBuoy(tile) && !IsAirport(tile)) {
3990 old_company->infrastructure.station--;
3991 new_company->infrastructure.station++;
3992 }
3993
3994 /* for buoys, owner of tile is owner of water, st->owner == OWNER_NONE */
3995 SetTileOwner(tile, new_owner);
3996 InvalidateWindowClassesData(WC_STATION_LIST, 0);
3997 } else {
3998 if (IsDriveThroughStopTile(tile)) {
3999 /* Remove the drive-through road stop */
4000 DoCommand(tile, 1 | 1 << 8, (GetStationType(tile) == STATION_TRUCK) ? ROADSTOP_TRUCK : ROADSTOP_BUS, DC_EXEC | DC_BANKRUPT, CMD_REMOVE_ROAD_STOP);
4001 assert(IsTileType(tile, MP_ROAD));
4002 /* Change owner of tile and all roadtypes */
4003 ChangeTileOwner(tile, old_owner, new_owner);
4004 } else {
4005 DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
4006 /* Set tile owner of water under (now removed) buoy and dock to OWNER_NONE.
4007 * Update owner of buoy if it was not removed (was in orders).
4008 * Do not update when owned by OWNER_WATER (sea and rivers). */
4009 if ((IsTileType(tile, MP_WATER) || IsBuoyTile(tile)) && IsTileOwner(tile, old_owner)) SetTileOwner(tile, OWNER_NONE);
4010 }
4011 }
4012 }
4013
4022 static bool CanRemoveRoadWithStop(TileIndex tile, DoCommandFlag flags)
4023 {
4024 /* Yeah... water can always remove stops, right? */
4025 if (_current_company == OWNER_WATER) return true;
4026
4027 RoadTypes rts = GetRoadTypes(tile);
4028 if (HasBit(rts, ROADTYPE_TRAM)) {
4029 Owner tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
4030 if (tram_owner != OWNER_NONE && CheckOwnership(tram_owner).Failed()) return false;
4031 }
4032 if (HasBit(rts, ROADTYPE_ROAD)) {
4033 Owner road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
4034 if (road_owner != OWNER_TOWN) {
4035 if (road_owner != OWNER_NONE && CheckOwnership(road_owner).Failed()) return false;
4036 } else {
4037 if (CheckAllowRemoveRoad(tile, GetAnyRoadBits(tile, ROADTYPE_ROAD), OWNER_TOWN, ROADTYPE_ROAD, flags).Failed()) return false;
4038 }
4039 }
4040
4041 return true;
4042 }
4043
4050 CommandCost ClearTile_Station(TileIndex tile, DoCommandFlag flags)
4051 {
4052 if (flags & DC_AUTO) {
4053 switch (GetStationType(tile)) {
4054 default: break;
4055 case STATION_RAIL: return_cmd_error(STR_ERROR_MUST_DEMOLISH_RAILROAD);
4056 case STATION_WAYPOINT: return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
4057 case STATION_AIRPORT: return_cmd_error(STR_ERROR_MUST_DEMOLISH_AIRPORT_FIRST);
4058 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);
4059 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);
4060 case STATION_BUOY: return_cmd_error(STR_ERROR_BUOY_IN_THE_WAY);
4061 case STATION_DOCK: return_cmd_error(STR_ERROR_MUST_DEMOLISH_DOCK_FIRST);
4062 case STATION_OILRIG:
4063 SetDParam(1, STR_INDUSTRY_NAME_OIL_RIG);
4064 return_cmd_error(STR_ERROR_GENERIC_OBJECT_IN_THE_WAY);
4065 }
4066 }
4067
4068 switch (GetStationType(tile)) {
4069 case STATION_RAIL: return RemoveRailStation(tile, flags);
4070 case STATION_WAYPOINT: return RemoveRailWaypoint(tile, flags);
4071 case STATION_AIRPORT: return RemoveAirport(tile, flags);
4072 case STATION_TRUCK:
4073 if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
4074 return_cmd_error(STR_ERROR_MUST_DEMOLISH_TRUCK_STATION_FIRST);
4075 }
4076 return RemoveRoadStop(tile, flags);
4077 case STATION_BUS:
4078 if (IsDriveThroughStopTile(tile) && !CanRemoveRoadWithStop(tile, flags)) {
4079 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BUS_STATION_FIRST);
4080 }
4081 return RemoveRoadStop(tile, flags);
4082 case STATION_BUOY: return RemoveBuoy(tile, flags);
4083 case STATION_DOCK: return RemoveDock(tile, flags);
4084 default: break;
4085 }
4086
4087 return CMD_ERROR;
4088 }
4089
4090 static CommandCost TerraformTile_Station(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
4091 {
4092 if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
4093 /* TODO: If you implement newgrf callback 149 'land slope check', you have to decide what to do with it here.
4094 * TTDP does not call it.
4095 */
4096 if (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new)) {
4097 switch (GetStationType(tile)) {
4098 case STATION_WAYPOINT:
4099 case STATION_RAIL: {
4100 DiagDirection direction = AxisToDiagDir(GetRailStationAxis(tile));
4101 if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
4102 if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
4103 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
4104 }
4105
4106 case STATION_AIRPORT:
4107 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
4108
4109 case STATION_TRUCK:
4110 case STATION_BUS: {
4111 DiagDirection direction = GetRoadStopDir(tile);
4112 if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, direction)) break;
4113 if (IsDriveThroughStopTile(tile)) {
4114 if (!AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, ReverseDiagDir(direction))) break;
4115 }
4116 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
4117 }
4118
4119 default: break;
4120 }
4121 }
4122 }
4123 return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
4124 }
4125
4131 uint FlowStat::GetShare(StationID st) const
4132 {
4133 uint32 prev = 0;
4134 for (SharesMap::const_iterator it = this->shares.begin(); it != this->shares.end(); ++it) {
4135 if (it->second == st) {
4136 return it->first - prev;
4137 } else {
4138 prev = it->first;
4139 }
4140 }
4141 return 0;
4142 }
4143
4150 StationID FlowStat::GetVia(StationID excluded, StationID excluded2) const
4151 {
4152 if (this->unrestricted == 0) return INVALID_STATION;
4153 assert(!this->shares.empty());
4154 SharesMap::const_iterator it = this->shares.upper_bound(RandomRange(this->unrestricted));
4155 assert(it != this->shares.end() && it->first <= this->unrestricted);
4156 if (it->second != excluded && it->second != excluded2) return it->second;
4157
4158 /* We've hit one of the excluded stations.
4159 * Draw another share, from outside its range. */
4160
4161 uint end = it->first;
4162 uint begin = (it == this->shares.begin() ? 0 : (--it)->first);
4163 uint interval = end - begin;
4164 if (interval >= this->unrestricted) return INVALID_STATION; // Only one station in the map.
4165 uint new_max = this->unrestricted - interval;
4166 uint rand = RandomRange(new_max);
4167 SharesMap::const_iterator it2 = (rand < begin) ? this->shares.upper_bound(rand) :
4168 this->shares.upper_bound(rand + interval);
4169 assert(it2 != this->shares.end() && it2->first <= this->unrestricted);
4170 if (it2->second != excluded && it2->second != excluded2) return it2->second;
4171
4172 /* We've hit the second excluded station.
4173 * Same as before, only a bit more complicated. */
4174
4175 uint end2 = it2->first;
4176 uint begin2 = (it2 == this->shares.begin() ? 0 : (--it2)->first);
4177 uint interval2 = end2 - begin2;
4178 if (interval2 >= new_max) return INVALID_STATION; // Only the two excluded stations in the map.
4179 new_max -= interval2;
4180 if (begin > begin2) {
4181 Swap(begin, begin2);
4182 Swap(end, end2);
4183 Swap(interval, interval2);
4184 }
4185 rand = RandomRange(new_max);
4186 SharesMap::const_iterator it3 = this->shares.upper_bound(this->unrestricted);
4187 if (rand < begin) {
4188 it3 = this->shares.upper_bound(rand);
4189 } else if (rand < begin2 - interval) {
4190 it3 = this->shares.upper_bound(rand + interval);
4191 } else {
4192 it3 = this->shares.upper_bound(rand + interval + interval2);
4193 }
4194 assert(it3 != this->shares.end() && it3->first <= this->unrestricted);
4195 return it3->second;
4196 }
4197
4203 void FlowStat::Invalidate()
4204 {
4205 assert(!this->shares.empty());
4206 SharesMap new_shares;
4207 uint i = 0;
4208 for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4209 new_shares[++i] = it->second;
4210 if (it->first == this->unrestricted) this->unrestricted = i;
4211 }
4212 this->shares.swap(new_shares);
4213 assert(!this->shares.empty() && this->unrestricted <= (--this->shares.end())->first);
4214 }
4215
4222 void FlowStat::ChangeShare(StationID st, int flow)
4223 {
4224 /* We assert only before changing as afterwards the shares can actually
4225 * be empty. In that case the whole flow stat must be deleted then. */
4226 assert(!this->shares.empty());
4227
4228 uint removed_shares = 0;
4229 uint added_shares = 0;
4230 uint last_share = 0;
4231 SharesMap new_shares;
4232 for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4233 if (it->second == st) {
4234 if (flow < 0) {
4235 uint share = it->first - last_share;
4236 if (flow == INT_MIN || (uint)(-flow) >= share) {
4237 removed_shares += share;
4238 if (it->first <= this->unrestricted) this->unrestricted -= share;
4239 if (flow != INT_MIN) flow += share;
4240 last_share = it->first;
4241 continue; // remove the whole share
4242 }
4243 removed_shares += (uint)(-flow);
4244 } else {
4245 added_shares += (uint)(flow);
4246 }
4247 if (it->first <= this->unrestricted) this->unrestricted += flow;
4248
4249 /* If we don't continue above the whole flow has been added or
4250 * removed. */
4251 flow = 0;
4252 }
4253 new_shares[it->first + added_shares - removed_shares] = it->second;
4254 last_share = it->first;
4255 }
4256 if (flow > 0) {
4257 new_shares[last_share + (uint)flow] = st;
4258 if (this->unrestricted < last_share) {
4259 this->ReleaseShare(st);
4260 } else {
4261 this->unrestricted += flow;
4262 }
4263 }
4264 this->shares.swap(new_shares);
4265 }
4266
4272 void FlowStat::RestrictShare(StationID st)
4273 {
4274 assert(!this->shares.empty());
4275 uint flow = 0;
4276 uint last_share = 0;
4277 SharesMap new_shares;
4278 for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4279 if (flow == 0) {
4280 if (it->first > this->unrestricted) return; // Not present or already restricted.
4281 if (it->second == st) {
4282 flow = it->first - last_share;
4283 this->unrestricted -= flow;
4284 } else {
4285 new_shares[it->first] = it->second;
4286 }
4287 } else {
4288 new_shares[it->first - flow] = it->second;
4289 }
4290 last_share = it->first;
4291 }
4292 if (flow == 0) return;
4293 new_shares[last_share + flow] = st;
4294 this->shares.swap(new_shares);
4295 assert(!this->shares.empty());
4296 }
4297
4303 void FlowStat::ReleaseShare(StationID st)
4304 {
4305 assert(!this->shares.empty());
4306 uint flow = 0;
4307 uint next_share = 0;
4308 bool found = false;
4309 for (SharesMap::reverse_iterator it(this->shares.rbegin()); it != this->shares.rend(); ++it) {
4310 if (it->first < this->unrestricted) return; // Note: not <= as the share may hit the limit.
4311 if (found) {
4312 flow = next_share - it->first;
4313 this->unrestricted += flow;
4314 break;
4315 } else {
4316 if (it->first == this->unrestricted) return; // !found -> Limit not hit.
4317 if (it->second == st) found = true;
4318 }
4319 next_share = it->first;
4320 }
4321 if (flow == 0) return;
4322 SharesMap new_shares;
4323 new_shares[flow] = st;
4324 for (SharesMap::iterator it(this->shares.begin()); it != this->shares.end(); ++it) {
4325 if (it->second != st) {
4326 new_shares[flow + it->first] = it->second;
4327 } else {
4328 flow = 0;
4329 }
4330 }
4331 this->shares.swap(new_shares);
4332 assert(!this->shares.empty());
4333 }
4334
4340 void FlowStat::ScaleToMonthly(uint runtime)
4341 {
4342 assert(runtime > 0);
4343 SharesMap new_shares;
4344 uint share = 0;
4345 for (SharesMap::iterator i = this->shares.begin(); i != this->shares.end(); ++i) {
4346 share = max(share + 1, i->first * 30 / runtime);
4347 new_shares[share] = i->second;
4348 if (this->unrestricted == i->first) this->unrestricted = share;
4349 }
4350 this->shares.swap(new_shares);
4351 }
4352
4359 void FlowStatMap::AddFlow(StationID origin, StationID via, uint flow)
4360 {
4361 FlowStatMap::iterator origin_it = this->find(origin);
4362 if (origin_it == this->end()) {
4363 this->insert(std::make_pair(origin, FlowStat(via, flow)));
4364 } else {
4365 origin_it->second.ChangeShare(via, flow);
4366 assert(!origin_it->second.GetShares()->empty());
4367 }
4368 }
4369
4378 void FlowStatMap::PassOnFlow(StationID origin, StationID via, uint flow)
4379 {
4380 FlowStatMap::iterator prev_it = this->find(origin);
4381 if (prev_it == this->end()) {
4382 FlowStat fs(via, flow);
4383 fs.AppendShare(INVALID_STATION, flow);
4384 this->insert(std::make_pair(origin, fs));
4385 } else {
4386 prev_it->second.ChangeShare(via, flow);
4387 prev_it->second.ChangeShare(INVALID_STATION, flow);
4388 assert(!prev_it->second.GetShares()->empty());
4389 }
4390 }
4391
4396 void FlowStatMap::FinalizeLocalConsumption(StationID self)
4397 {
4398 for (FlowStatMap::iterator i = this->begin(); i != this->end(); ++i) {
4399 FlowStat &fs = i->second;
4400 uint local = fs.GetShare(INVALID_STATION);
4401 if (local > INT_MAX) { // make sure it fits in an int
4402 fs.ChangeShare(self, -INT_MAX);
4403 fs.ChangeShare(INVALID_STATION, -INT_MAX);
4404 local -= INT_MAX;
4405 }
4406 fs.ChangeShare(self, -(int)local);
4407 fs.ChangeShare(INVALID_STATION, -(int)local);
4408
4409 /* If the local share is used up there must be a share for some
4410 * remote station. */
4411 assert(!fs.GetShares()->empty());
4412 }
4413 }
4414
4421 StationIDStack FlowStatMap::DeleteFlows(StationID via)
4422 {
4423 StationIDStack ret;
4424 for (FlowStatMap::iterator f_it = this->begin(); f_it != this->end();) {
4425 FlowStat &s_flows = f_it->second;
4426 s_flows.ChangeShare(via, INT_MIN);
4427 if (s_flows.GetShares()->empty()) {
4428 ret.Push(f_it->first);
4429 this->erase(f_it++);
4430 } else {
4431 ++f_it;
4432 }
4433 }
4434 return ret;
4435 }
4436
4441 void FlowStatMap::RestrictFlows(StationID via)
4442 {
4443 for (FlowStatMap::iterator it = this->begin(); it != this->end(); ++it) {
4444 it->second.RestrictShare(via);
4445 }
4446 }
4447
4452 void FlowStatMap::ReleaseFlows(StationID via)
4453 {
4454 for (FlowStatMap::iterator it = this->begin(); it != this->end(); ++it) {
4455 it->second.ReleaseShare(via);
4456 }
4457 }
4458
4463 uint FlowStatMap::GetFlow() const
4464 {
4465 uint ret = 0;
4466 for (FlowStatMap::const_iterator i = this->begin(); i != this->end(); ++i) {
4467 ret += (--(i->second.GetShares()->end()))->first;
4468 }
4469 return ret;
4470 }
4471
4477 uint FlowStatMap::GetFlowVia(StationID via) const
4478 {
4479 uint ret = 0;
4480 for (FlowStatMap::const_iterator i = this->begin(); i != this->end(); ++i) {
4481 ret += i->second.GetShare(via);
4482 }
4483 return ret;
4484 }
4485
4491 uint FlowStatMap::GetFlowFrom(StationID from) const
4492 {
4493 FlowStatMap::const_iterator i = this->find(from);
4494 if (i == this->end()) return 0;
4495 return (--(i->second.GetShares()->end()))->first;
4496 }
4497
4504 uint FlowStatMap::GetFlowFromVia(StationID from, StationID via) const
4505 {
4506 FlowStatMap::const_iterator i = this->find(from);
4507 if (i == this->end()) return 0;
4508 return i->second.GetShare(via);
4509 }
4510
4511 extern const TileTypeProcs _tile_type_station_procs = {
4512 DrawTile_Station, // draw_tile_proc
4513 GetSlopePixelZ_Station, // get_slope_z_proc
4514 ClearTile_Station, // clear_tile_proc
4515 NULL, // add_accepted_cargo_proc
4516 GetTileDesc_Station, // get_tile_desc_proc
4517 GetTileTrackStatus_Station, // get_tile_track_status_proc
4518 ClickTile_Station, // click_tile_proc
4519 AnimateTile_Station, // animate_tile_proc
4520 TileLoop_Station, // tile_loop_proc
4521 ChangeTileOwner_Station, // change_tile_owner_proc
4522 NULL, // add_produced_cargo_proc
4523 VehicleEnter_Station, // vehicle_enter_tile_proc
4524 GetFoundation_Station, // get_foundation_proc
4525 TerraformTile_Station, // terraform_tile_proc
4526 };