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economy.cpp
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1 /* $Id: economy.cpp 27893 2017-08-13 18:38:42Z frosch $ */
2
3 /*
4 * This file is part of OpenTTD.
5 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
6 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
8 */
9
12 #include "stdafx.h"
13 #include "company_func.h"
14 #include "command_func.h"
15 #include "industry.h"
16 #include "town.h"
17 #include "news_func.h"
18 #include "network/network.h"
19 #include "network/network_func.h"
20 #include "ai/ai.hpp"
21 #include "aircraft.h"
22 #include "train.h"
23 #include "newgrf_engine.h"
24 #include "engine_base.h"
25 #include "ground_vehicle.hpp"
26 #include "newgrf_cargo.h"
27 #include "newgrf_sound.h"
28 #include "newgrf_industrytiles.h"
29 #include "newgrf_station.h"
30 #include "newgrf_airporttiles.h"
31 #include "object.h"
32 #include "strings_func.h"
33 #include "date_func.h"
34 #include "vehicle_func.h"
35 #include "sound_func.h"
36 #include "autoreplace_func.h"
37 #include "company_gui.h"
38 #include "signs_base.h"
39 #include "subsidy_base.h"
40 #include "subsidy_func.h"
41 #include "station_base.h"
42 #include "waypoint_base.h"
43 #include "economy_base.h"
44 #include "core/pool_func.hpp"
45 #include "core/backup_type.hpp"
46 #include "cargo_type.h"
47 #include "water.h"
48 #include "game/game.hpp"
49 #include "cargomonitor.h"
50 #include "goal_base.h"
51 #include "story_base.h"
52 #include "linkgraph/refresh.h"
53
54 #include "table/strings.h"
55 #include "table/pricebase.h"
56
57 #include "safeguards.h"
58
59
60 /* Initialize the cargo payment-pool */
61 CargoPaymentPool _cargo_payment_pool("CargoPayment");
62 INSTANTIATE_POOL_METHODS(CargoPayment)
63
64
75 static inline int32 BigMulS(const int32 a, const int32 b, const uint8 shift)
76 {
77 return (int32)((int64)a * (int64)b >> shift);
78 }
79
80 typedef SmallVector<Industry *, 16> SmallIndustryList;
81
85 const ScoreInfo _score_info[] = {
86 { 120, 100}, // SCORE_VEHICLES
87 { 80, 100}, // SCORE_STATIONS
88 { 10000, 100}, // SCORE_MIN_PROFIT
89 { 50000, 50}, // SCORE_MIN_INCOME
90 { 100000, 100}, // SCORE_MAX_INCOME
91 { 40000, 400}, // SCORE_DELIVERED
92 { 8, 50}, // SCORE_CARGO
93 {10000000, 50}, // SCORE_MONEY
94 { 250000, 50}, // SCORE_LOAN
95 { 0, 0} // SCORE_TOTAL
96 };
97
98 int _score_part[MAX_COMPANIES][SCORE_END];
99 Economy _economy;
100 Prices _price;
101 Money _additional_cash_required;
102 static PriceMultipliers _price_base_multiplier;
103
113 Money CalculateCompanyValue(const Company *c, bool including_loan)
114 {
115 Owner owner = c->index;
116
117 Station *st;
118 uint num = 0;
119
120 FOR_ALL_STATIONS(st) {
121 if (st->owner == owner) num += CountBits((byte)st->facilities);
122 }
123
124 Money value = num * _price[PR_STATION_VALUE] * 25;
125
126 Vehicle *v;
127 FOR_ALL_VEHICLES(v) {
128 if (v->owner != owner) continue;
129
130 if (v->type == VEH_TRAIN ||
131 v->type == VEH_ROAD ||
132 (v->type == VEH_AIRCRAFT && Aircraft::From(v)->IsNormalAircraft()) ||
133 v->type == VEH_SHIP) {
134 value += v->value * 3 >> 1;
135 }
136 }
137
138 /* Add real money value */
139 if (including_loan) value -= c->current_loan;
140 value += c->money;
141
142 return max(value, (Money)1);
143 }
144
153 int UpdateCompanyRatingAndValue(Company *c, bool update)
154 {
155 Owner owner = c->index;
156 int score = 0;
157
158 memset(_score_part[owner], 0, sizeof(_score_part[owner]));
159
160 /* Count vehicles */
161 {
162 Vehicle *v;
163 Money min_profit = 0;
164 bool min_profit_first = true;
165 uint num = 0;
166
167 FOR_ALL_VEHICLES(v) {
168 if (v->owner != owner) continue;
169 if (IsCompanyBuildableVehicleType(v->type) && v->IsPrimaryVehicle()) {
170 if (v->profit_last_year > 0) num++; // For the vehicle score only count profitable vehicles
171 if (v->age > 730) {
172 /* Find the vehicle with the lowest amount of profit */
173 if (min_profit_first || min_profit > v->profit_last_year) {
174 min_profit = v->profit_last_year;
175 min_profit_first = false;
176 }
177 }
178 }
179 }
180
181 min_profit >>= 8; // remove the fract part
182
183 _score_part[owner][SCORE_VEHICLES] = num;
184 /* Don't allow negative min_profit to show */
185 if (min_profit > 0) {
186 _score_part[owner][SCORE_MIN_PROFIT] = ClampToI32(min_profit);
187 }
188 }
189
190 /* Count stations */
191 {
192 uint num = 0;
193 const Station *st;
194
195 FOR_ALL_STATIONS(st) {
196 /* Only count stations that are actually serviced */
197 if (st->owner == owner && (st->time_since_load <= 20 || st->time_since_unload <= 20)) num += CountBits((byte)st->facilities);
198 }
199 _score_part[owner][SCORE_STATIONS] = num;
200 }
201
202 /* Generate statistics depending on recent income statistics */
203 {
204 int numec = min(c->num_valid_stat_ent, 12);
205 if (numec != 0) {
206 const CompanyEconomyEntry *cee = c->old_economy;
207 Money min_income = cee->income + cee->expenses;
208 Money max_income = cee->income + cee->expenses;
209
210 do {
211 min_income = min(min_income, cee->income + cee->expenses);
212 max_income = max(max_income, cee->income + cee->expenses);
213 } while (++cee, --numec);
214
215 if (min_income > 0) {
216 _score_part[owner][SCORE_MIN_INCOME] = ClampToI32(min_income);
217 }
218
219 _score_part[owner][SCORE_MAX_INCOME] = ClampToI32(max_income);
220 }
221 }
222
223 /* Generate score depending on amount of transported cargo */
224 {
225 int numec = min(c->num_valid_stat_ent, 4);
226 if (numec != 0) {
227 const CompanyEconomyEntry *cee = c->old_economy;
228 OverflowSafeInt64 total_delivered = 0;
229 do {
230 total_delivered += cee->delivered_cargo.GetSum<OverflowSafeInt64>();
231 } while (++cee, --numec);
232
233 _score_part[owner][SCORE_DELIVERED] = ClampToI32(total_delivered);
234 }
235 }
236
237 /* Generate score for variety of cargo */
238 {
239 _score_part[owner][SCORE_CARGO] = c->old_economy->delivered_cargo.GetCount();
240 }
241
242 /* Generate score for company's money */
243 {
244 if (c->money > 0) {
245 _score_part[owner][SCORE_MONEY] = ClampToI32(c->money);
246 }
247 }
248
249 /* Generate score for loan */
250 {
251 _score_part[owner][SCORE_LOAN] = ClampToI32(_score_info[SCORE_LOAN].needed - c->current_loan);
252 }
253
254 /* Now we calculate the score for each item.. */
255 {
256 int total_score = 0;
257 int s;
258 score = 0;
259 for (ScoreID i = SCORE_BEGIN; i < SCORE_END; i++) {
260 /* Skip the total */
261 if (i == SCORE_TOTAL) continue;
262 /* Check the score */
263 s = Clamp(_score_part[owner][i], 0, _score_info[i].needed) * _score_info[i].score / _score_info[i].needed;
264 score += s;
265 total_score += _score_info[i].score;
266 }
267
268 _score_part[owner][SCORE_TOTAL] = score;
269
270 /* We always want the score scaled to SCORE_MAX (1000) */
271 if (total_score != SCORE_MAX) score = score * SCORE_MAX / total_score;
272 }
273
274 if (update) {
275 c->old_economy[0].performance_history = score;
276 UpdateCompanyHQ(c->location_of_HQ, score);
277 c->old_economy[0].company_value = CalculateCompanyValue(c);
278 }
279
280 SetWindowDirty(WC_PERFORMANCE_DETAIL, 0);
281 return score;
282 }
283
289 void ChangeOwnershipOfCompanyItems(Owner old_owner, Owner new_owner)
290 {
291 /* We need to set _current_company to old_owner before we try to move
292 * the client. This is needed as it needs to know whether "you" really
293 * are the current local company. */
294 Backup<CompanyByte> cur_company(_current_company, old_owner, FILE_LINE);
295 #ifdef ENABLE_NETWORK
296 /* In all cases, make spectators of clients connected to that company */
297 if (_networking) NetworkClientsToSpectators(old_owner);
298 #endif /* ENABLE_NETWORK */
299 if (old_owner == _local_company) {
300 /* Single player cheated to AI company.
301 * There are no spectators in single player, so we must pick some other company. */
302 assert(!_networking);
303 Backup<CompanyByte> cur_company2(_current_company, FILE_LINE);
304 Company *c;
305 FOR_ALL_COMPANIES(c) {
306 if (c->index != old_owner) {
307 SetLocalCompany(c->index);
308 break;
309 }
310 }
311 cur_company2.Restore();
312 assert(old_owner != _local_company);
313 }
314
315 Town *t;
316
317 assert(old_owner != new_owner);
318
319 {
320 Company *c;
321 uint i;
322
323 /* See if the old_owner had shares in other companies */
324 FOR_ALL_COMPANIES(c) {
325 for (i = 0; i < 4; i++) {
326 if (c->share_owners[i] == old_owner) {
327 /* Sell his shares */
328 CommandCost res = DoCommand(0, c->index, 0, DC_EXEC | DC_BANKRUPT, CMD_SELL_SHARE_IN_COMPANY);
329 /* Because we are in a DoCommand, we can't just execute another one and
330 * expect the money to be removed. We need to do it ourself! */
331 SubtractMoneyFromCompany(res);
332 }
333 }
334 }
335
336 /* Sell all the shares that people have on this company */
337 Backup<CompanyByte> cur_company2(_current_company, FILE_LINE);
338 c = Company::Get(old_owner);
339 for (i = 0; i < 4; i++) {
340 cur_company2.Change(c->share_owners[i]);
341 if (_current_company != INVALID_OWNER) {
342 /* Sell the shares */
343 CommandCost res = DoCommand(0, old_owner, 0, DC_EXEC | DC_BANKRUPT, CMD_SELL_SHARE_IN_COMPANY);
344 /* Because we are in a DoCommand, we can't just execute another one and
345 * expect the money to be removed. We need to do it ourself! */
346 SubtractMoneyFromCompany(res);
347 }
348 }
349 cur_company2.Restore();
350 }
351
352 /* Temporarily increase the company's money, to be sure that
353 * removing his/her property doesn't fail because of lack of money.
354 * Not too drastically though, because it could overflow */
355 if (new_owner == INVALID_OWNER) {
356 Company::Get(old_owner)->money = UINT64_MAX >> 2; // jackpot ;p
357 }
358
359 Subsidy *s;
360 FOR_ALL_SUBSIDIES(s) {
361 if (s->awarded == old_owner) {
362 if (new_owner == INVALID_OWNER) {
363 delete s;
364 } else {
365 s->awarded = new_owner;
366 }
367 }
368 }
369 if (new_owner == INVALID_OWNER) RebuildSubsidisedSourceAndDestinationCache();
370
371 /* Take care of rating and transport rights in towns */
372 FOR_ALL_TOWNS(t) {
373 /* If a company takes over, give the ratings to that company. */
374 if (new_owner != INVALID_OWNER) {
375 if (HasBit(t->have_ratings, old_owner)) {
376 if (HasBit(t->have_ratings, new_owner)) {
377 /* use max of the two ratings. */
378 t->ratings[new_owner] = max(t->ratings[new_owner], t->ratings[old_owner]);
379 } else {
380 SetBit(t->have_ratings, new_owner);
381 t->ratings[new_owner] = t->ratings[old_owner];
382 }
383 }
384 }
385
386 /* Reset the ratings for the old owner */
387 t->ratings[old_owner] = RATING_INITIAL;
388 ClrBit(t->have_ratings, old_owner);
389
390 /* Transfer exclusive rights */
391 if (t->exclusive_counter > 0 && t->exclusivity == old_owner) {
392 if (new_owner != INVALID_OWNER) {
393 t->exclusivity = new_owner;
394 } else {
395 t->exclusive_counter = 0;
396 t->exclusivity = INVALID_COMPANY;
397 }
398 }
399 }
400
401 {
402 Vehicle *v;
403 FOR_ALL_VEHICLES(v) {
404 if (v->owner == old_owner && IsCompanyBuildableVehicleType(v->type)) {
405 if (new_owner == INVALID_OWNER) {
406 if (v->Previous() == NULL) delete v;
407 } else {
408 if (v->IsEngineCountable()) GroupStatistics::CountEngine(v, -1);
409 if (v->IsPrimaryVehicle()) GroupStatistics::CountVehicle(v, -1);
410 }
411 }
412 }
413 }
414
415 /* In all cases clear replace engine rules.
416 * Even if it was copied, it could interfere with new owner's rules */
417 RemoveAllEngineReplacementForCompany(Company::Get(old_owner));
418
419 if (new_owner == INVALID_OWNER) {
420 RemoveAllGroupsForCompany(old_owner);
421 } else {
422 Group *g;
423 FOR_ALL_GROUPS(g) {
424 if (g->owner == old_owner) g->owner = new_owner;
425 }
426 }
427
428 {
429 FreeUnitIDGenerator unitidgen[] = {
430 FreeUnitIDGenerator(VEH_TRAIN, new_owner), FreeUnitIDGenerator(VEH_ROAD, new_owner),
431 FreeUnitIDGenerator(VEH_SHIP, new_owner), FreeUnitIDGenerator(VEH_AIRCRAFT, new_owner)
432 };
433
434 /* Override company settings to new company defaults in case we need to convert them.
435 * This is required as the CmdChangeServiceInt doesn't copy the supplied value when it is non-custom
436 */
437 if (new_owner != INVALID_OWNER) {
438 Company *old_company = Company::Get(old_owner);
439 Company *new_company = Company::Get(new_owner);
440
441 old_company->settings.vehicle.servint_aircraft = new_company->settings.vehicle.servint_aircraft;
442 old_company->settings.vehicle.servint_trains = new_company->settings.vehicle.servint_trains;
443 old_company->settings.vehicle.servint_roadveh = new_company->settings.vehicle.servint_roadveh;
444 old_company->settings.vehicle.servint_ships = new_company->settings.vehicle.servint_ships;
445 old_company->settings.vehicle.servint_ispercent = new_company->settings.vehicle.servint_ispercent;
446 }
447
448 Vehicle *v;
449 FOR_ALL_VEHICLES(v) {
450 if (v->owner == old_owner && IsCompanyBuildableVehicleType(v->type)) {
451 assert(new_owner != INVALID_OWNER);
452
453 /* Correct default values of interval settings while maintaining custom set ones.
454 * This prevents invalid values on mismatching company defaults being accepted.
455 */
456 if (!v->ServiceIntervalIsCustom()) {
457 Company *new_company = Company::Get(new_owner);
458
459 /* Technically, passing the interval is not needed as the command will query the default value itself.
460 * However, do not rely on that behaviour.
461 */
462 int interval = CompanyServiceInterval(new_company, v->type);
463 DoCommand(v->tile, v->index, interval | (new_company->settings.vehicle.servint_ispercent << 17), DC_EXEC | DC_BANKRUPT, CMD_CHANGE_SERVICE_INT);
464 }
465
466 v->owner = new_owner;
467
468 /* Owner changes, clear cache */
469 v->colourmap = PAL_NONE;
470 v->InvalidateNewGRFCache();
471
472 if (v->IsEngineCountable()) {
473 GroupStatistics::CountEngine(v, 1);
474 }
475 if (v->IsPrimaryVehicle()) {
476 GroupStatistics::CountVehicle(v, 1);
477 v->unitnumber = unitidgen[v->type].NextID();
478 }
479
480 /* Invalidate the vehicle's cargo payment "owner cache". */
481 if (v->cargo_payment != NULL) v->cargo_payment->owner = NULL;
482 }
483 }
484
485 if (new_owner != INVALID_OWNER) GroupStatistics::UpdateAutoreplace(new_owner);
486 }
487
488 /* Change ownership of tiles */
489 {
490 TileIndex tile = 0;
491 do {
492 ChangeTileOwner(tile, old_owner, new_owner);
493 } while (++tile != MapSize());
494
495 if (new_owner != INVALID_OWNER) {
496 /* Update all signals because there can be new segment that was owned by two companies
497 * and signals were not propagated
498 * Similar with crossings - it is needed to bar crossings that weren't before
499 * because of different owner of crossing and approaching train */
500 tile = 0;
501
502 do {
503 if (IsTileType(tile, MP_RAILWAY) && IsTileOwner(tile, new_owner) && HasSignals(tile)) {
504 TrackBits tracks = GetTrackBits(tile);
505 do { // there may be two tracks with signals for TRACK_BIT_HORZ and TRACK_BIT_VERT
506 Track track = RemoveFirstTrack(&tracks);
507 if (HasSignalOnTrack(tile, track)) AddTrackToSignalBuffer(tile, track, new_owner);
508 } while (tracks != TRACK_BIT_NONE);
509 } else if (IsLevelCrossingTile(tile) && IsTileOwner(tile, new_owner)) {
510 UpdateLevelCrossing(tile);
511 }
512 } while (++tile != MapSize());
513 }
514
515 /* update signals in buffer */
516 UpdateSignalsInBuffer();
517 }
518
519 /* Add airport infrastructure count of the old company to the new one. */
520 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.airport += Company::Get(old_owner)->infrastructure.airport;
521
522 /* convert owner of stations (including deleted ones, but excluding buoys) */
523 Station *st;
524 FOR_ALL_STATIONS(st) {
525 if (st->owner == old_owner) {
526 /* if a company goes bankrupt, set owner to OWNER_NONE so the sign doesn't disappear immediately
527 * also, drawing station window would cause reading invalid company's colour */
528 st->owner = new_owner == INVALID_OWNER ? OWNER_NONE : new_owner;
529 }
530 }
531
532 /* do the same for waypoints (we need to do this here so deleted waypoints are converted too) */
533 Waypoint *wp;
534 FOR_ALL_WAYPOINTS(wp) {
535 if (wp->owner == old_owner) {
536 wp->owner = new_owner == INVALID_OWNER ? OWNER_NONE : new_owner;
537 }
538 }
539
540 Sign *si;
541 FOR_ALL_SIGNS(si) {
542 if (si->owner == old_owner) si->owner = new_owner == INVALID_OWNER ? OWNER_NONE : new_owner;
543 }
544
545 /* Remove Game Script created Goals, CargoMonitors and Story pages. */
546 Goal *g;
547 FOR_ALL_GOALS(g) {
548 if (g->company == old_owner) delete g;
549 }
550
551 ClearCargoPickupMonitoring(old_owner);
552 ClearCargoDeliveryMonitoring(old_owner);
553
554 StoryPage *sp;
555 FOR_ALL_STORY_PAGES(sp) {
556 if (sp->company == old_owner) delete sp;
557 }
558
559 /* Change colour of existing windows */
560 if (new_owner != INVALID_OWNER) ChangeWindowOwner(old_owner, new_owner);
561
562 cur_company.Restore();
563
564 MarkWholeScreenDirty();
565 }
566
571 static void CompanyCheckBankrupt(Company *c)
572 {
573 /* If the company has money again, it does not go bankrupt */
574 if (c->money - c->current_loan >= -_economy.max_loan) {
575 c->months_of_bankruptcy = 0;
576 c->bankrupt_asked = 0;
577 return;
578 }
579
580 c->months_of_bankruptcy++;
581
582 switch (c->months_of_bankruptcy) {
583 /* All the boring cases (months) with a bad balance where no action is taken */
584 case 0:
585 case 1:
586 case 2:
587 case 3:
588
589 case 5:
590 case 6:
591
592 case 8:
593 case 9:
594 break;
595
596 /* Warn about bankruptcy after 3 months */
597 case 4: {
598 CompanyNewsInformation *cni = MallocT<CompanyNewsInformation>(1);
599 cni->FillData(c);
600 SetDParam(0, STR_NEWS_COMPANY_IN_TROUBLE_TITLE);
601 SetDParam(1, STR_NEWS_COMPANY_IN_TROUBLE_DESCRIPTION);
602 SetDParamStr(2, cni->company_name);
603 AddCompanyNewsItem(STR_MESSAGE_NEWS_FORMAT, cni);
604 AI::BroadcastNewEvent(new ScriptEventCompanyInTrouble(c->index));
605 Game::NewEvent(new ScriptEventCompanyInTrouble(c->index));
606 break;
607 }
608
609 /* Offer company for sale after 6 months */
610 case 7: {
611 /* Don't consider the loan */
612 Money val = CalculateCompanyValue(c, false);
613
614 c->bankrupt_value = val;
615 c->bankrupt_asked = 1 << c->index; // Don't ask the owner
616 c->bankrupt_timeout = 0;
617
618 /* The company assets should always have some value */
619 assert(c->bankrupt_value > 0);
620 break;
621 }
622
623 /* Bankrupt company after 6 months (if the company has no value) or latest
624 * after 9 months (if it still had value after 6 months) */
625 default:
626 case 10: {
627 if (!_networking && _local_company == c->index) {
628 /* If we are in offline mode, leave the company playing. Eg. there
629 * is no THE-END, otherwise mark the client as spectator to make sure
630 * he/she is no long in control of this company. However... when you
631 * join another company (cheat) the "unowned" company can bankrupt. */
632 c->bankrupt_asked = MAX_UVALUE(CompanyMask);
633 break;
634 }
635
636 /* Actually remove the company, but not when we're a network client.
637 * In case of network clients we will be getting a command from the
638 * server. It is done in this way as we are called from the
639 * StateGameLoop which can't change the current company, and thus
640 * updating the local company triggers an assert later on. In the
641 * case of a network game the command will be processed at a time
642 * that changing the current company is okay. In case of single
643 * player we are sure (the above check) that we are not the local
644 * company and thus we won't be moved. */
645 if (!_networking || _network_server) DoCommandP(0, 2 | (c->index << 16), CRR_BANKRUPT, CMD_COMPANY_CTRL);
646 break;
647 }
648 }
649 }
650
655 static void CompaniesGenStatistics()
656 {
657 Station *st;
658
659 Backup<CompanyByte> cur_company(_current_company, FILE_LINE);
660 Company *c;
661
662 if (!_settings_game.economy.infrastructure_maintenance) {
663 FOR_ALL_STATIONS(st) {
664 cur_company.Change(st->owner);
665 CommandCost cost(EXPENSES_PROPERTY, _price[PR_STATION_VALUE] >> 1);
666 SubtractMoneyFromCompany(cost);
667 }
668 } else {
669 /* Improved monthly infrastructure costs. */
670 FOR_ALL_COMPANIES(c) {
671 cur_company.Change(c->index);
672
673 CommandCost cost(EXPENSES_PROPERTY);
674 uint32 rail_total = c->infrastructure.GetRailTotal();
675 for (RailType rt = RAILTYPE_BEGIN; rt < RAILTYPE_END; rt++) {
676 if (c->infrastructure.rail[rt] != 0) cost.AddCost(RailMaintenanceCost(rt, c->infrastructure.rail[rt], rail_total));
677 }
678 cost.AddCost(SignalMaintenanceCost(c->infrastructure.signal));
679 for (RoadType rt = ROADTYPE_BEGIN; rt < ROADTYPE_END; rt++) {
680 if (c->infrastructure.road[rt] != 0) cost.AddCost(RoadMaintenanceCost(rt, c->infrastructure.road[rt]));
681 }
682 cost.AddCost(CanalMaintenanceCost(c->infrastructure.water));
683 cost.AddCost(StationMaintenanceCost(c->infrastructure.station));
684 cost.AddCost(AirportMaintenanceCost(c->index));
685
686 SubtractMoneyFromCompany(cost);
687 }
688 }
689 cur_company.Restore();
690
691 /* Check for bankruptcy each month */
692 FOR_ALL_COMPANIES(c) {
693 CompanyCheckBankrupt(c);
694 }
695
696 /* Only run the economic statics and update company stats every 3rd month (1st of quarter). */
697 if (!HasBit(1 << 0 | 1 << 3 | 1 << 6 | 1 << 9, _cur_month)) return;
698
699 FOR_ALL_COMPANIES(c) {
700 memmove(&c->old_economy[1], &c->old_economy[0], sizeof(c->old_economy) - sizeof(c->old_economy[0]));
701 c->old_economy[0] = c->cur_economy;
702 memset(&c->cur_economy, 0, sizeof(c->cur_economy));
703
704 if (c->num_valid_stat_ent != MAX_HISTORY_QUARTERS) c->num_valid_stat_ent++;
705
706 UpdateCompanyRatingAndValue(c, true);
707 if (c->block_preview != 0) c->block_preview--;
708 }
709
710 SetWindowDirty(WC_INCOME_GRAPH, 0);
711 SetWindowDirty(WC_OPERATING_PROFIT, 0);
712 SetWindowDirty(WC_DELIVERED_CARGO, 0);
713 SetWindowDirty(WC_PERFORMANCE_HISTORY, 0);
714 SetWindowDirty(WC_COMPANY_VALUE, 0);
715 SetWindowDirty(WC_COMPANY_LEAGUE, 0);
716 }
717
723 bool AddInflation(bool check_year)
724 {
725 /* The cargo payment inflation differs from the normal inflation, so the
726 * relative amount of money you make with a transport decreases slowly over
727 * the 170 years. After a few hundred years we reach a level in which the
728 * games will become unplayable as the maximum income will be less than
729 * the minimum running cost.
730 *
731 * Furthermore there are a lot of inflation related overflows all over the
732 * place. Solving them is hardly possible because inflation will always
733 * reach the overflow threshold some day. So we'll just perform the
734 * inflation mechanism during the first 170 years (the amount of years that
735 * one had in the original TTD) and stop doing the inflation after that
736 * because it only causes problems that can't be solved nicely and the
737 * inflation doesn't add anything after that either; it even makes playing
738 * it impossible due to the diverging cost and income rates.
739 */
740 if (check_year && (_cur_year - _settings_game.game_creation.starting_year) >= (ORIGINAL_MAX_YEAR - ORIGINAL_BASE_YEAR)) return true;
741
742 if (_economy.inflation_prices == MAX_INFLATION || _economy.inflation_payment == MAX_INFLATION) return true;
743
744 /* Approximation for (100 + infl_amount)% ** (1 / 12) - 100%
745 * scaled by 65536
746 * 12 -> months per year
747 * This is only a good approximation for small values
748 */
749 _economy.inflation_prices += (_economy.inflation_prices * _economy.infl_amount * 54) >> 16;
750 _economy.inflation_payment += (_economy.inflation_payment * _economy.infl_amount_pr * 54) >> 16;
751
752 if (_economy.inflation_prices > MAX_INFLATION) _economy.inflation_prices = MAX_INFLATION;
753 if (_economy.inflation_payment > MAX_INFLATION) _economy.inflation_payment = MAX_INFLATION;
754
755 return false;
756 }
757
761 void RecomputePrices()
762 {
763 /* Setup maximum loan */
764 _economy.max_loan = (_settings_game.difficulty.max_loan * _economy.inflation_prices >> 16) / 50000 * 50000;
765
766 /* Setup price bases */
767 for (Price i = PR_BEGIN; i < PR_END; i++) {
768 Money price = _price_base_specs[i].start_price;
769
770 /* Apply difficulty settings */
771 uint mod = 1;
772 switch (_price_base_specs[i].category) {
773 case PCAT_RUNNING:
774 mod = _settings_game.difficulty.vehicle_costs;
775 break;
776
777 case PCAT_CONSTRUCTION:
778 mod = _settings_game.difficulty.construction_cost;
779 break;
780
781 default: break;
782 }
783 switch (mod) {
784 case 0: price *= 6; break;
785 case 1: price *= 8; break; // normalised to 1 below
786 case 2: price *= 9; break;
787 default: NOT_REACHED();
788 }
789
790 /* Apply inflation */
791 price = (int64)price * _economy.inflation_prices;
792
793 /* Apply newgrf modifiers, remove fractional part of inflation, and normalise on medium difficulty. */
794 int shift = _price_base_multiplier[i] - 16 - 3;
795 if (shift >= 0) {
796 price <<= shift;
797 } else {
798 price >>= -shift;
799 }
800
801 /* Make sure the price does not get reduced to zero.
802 * Zero breaks quite a few commands that use a zero
803 * cost to see whether something got changed or not
804 * and based on that cause an error. When the price
805 * is zero that fails even when things are done. */
806 if (price == 0) {
807 price = Clamp(_price_base_specs[i].start_price, -1, 1);
808 /* No base price should be zero, but be sure. */
809 assert(price != 0);
810 }
811 /* Store value */
812 _price[i] = price;
813 }
814
815 /* Setup cargo payment */
816 CargoSpec *cs;
817 FOR_ALL_CARGOSPECS(cs) {
818 cs->current_payment = ((int64)cs->initial_payment * _economy.inflation_payment) >> 16;
819 }
820
821 SetWindowClassesDirty(WC_BUILD_VEHICLE);
822 SetWindowClassesDirty(WC_REPLACE_VEHICLE);
823 SetWindowClassesDirty(WC_VEHICLE_DETAILS);
824 SetWindowClassesDirty(WC_COMPANY_INFRASTRUCTURE);
825 InvalidateWindowData(WC_PAYMENT_RATES, 0);
826 }
827
829 static void CompaniesPayInterest()
830 {
831 const Company *c;
832
833 Backup<CompanyByte> cur_company(_current_company, FILE_LINE);
834 FOR_ALL_COMPANIES(c) {
835 cur_company.Change(c->index);
836
837 /* Over a year the paid interest should be "loan * interest percentage",
838 * but... as that number is likely not dividable by 12 (pay each month),
839 * one needs to account for that in the monthly fee calculations.
840 * To easily calculate what one should pay "this" month, you calculate
841 * what (total) should have been paid up to this month and you subtract
842 * whatever has been paid in the previous months. This will mean one month
843 * it'll be a bit more and the other it'll be a bit less than the average
844 * monthly fee, but on average it will be exact.
845 * In order to prevent cheating or abuse (just not paying interest by not
846 * taking a loan we make companies pay interest on negative cash as well
847 */
848 Money yearly_fee = c->current_loan * _economy.interest_rate / 100;
849 if (c->money < 0) {
850 yearly_fee += -c->money *_economy.interest_rate / 100;
851 }
852 Money up_to_previous_month = yearly_fee * _cur_month / 12;
853 Money up_to_this_month = yearly_fee * (_cur_month + 1) / 12;
854
855 SubtractMoneyFromCompany(CommandCost(EXPENSES_LOAN_INT, up_to_this_month - up_to_previous_month));
856
857 SubtractMoneyFromCompany(CommandCost(EXPENSES_OTHER, _price[PR_STATION_VALUE] >> 2));
858 }
859 cur_company.Restore();
860 }
861
862 static void HandleEconomyFluctuations()
863 {
864 if (_settings_game.difficulty.economy != 0) {
865 /* When economy is Fluctuating, decrease counter */
866 _economy.fluct--;
867 } else if (EconomyIsInRecession()) {
868 /* When it's Steady and we are in recession, end it now */
869 _economy.fluct = -12;
870 } else {
871 /* No need to do anything else in other cases */
872 return;
873 }
874
875 if (_economy.fluct == 0) {
876 _economy.fluct = -(int)GB(Random(), 0, 2);
877 AddNewsItem(STR_NEWS_BEGIN_OF_RECESSION, NT_ECONOMY, NF_NORMAL);
878 } else if (_economy.fluct == -12) {
879 _economy.fluct = GB(Random(), 0, 8) + 312;
880 AddNewsItem(STR_NEWS_END_OF_RECESSION, NT_ECONOMY, NF_NORMAL);
881 }
882 }
883
884
888 void ResetPriceBaseMultipliers()
889 {
890 memset(_price_base_multiplier, 0, sizeof(_price_base_multiplier));
891 }
892
900 void SetPriceBaseMultiplier(Price price, int factor)
901 {
902 assert(price < PR_END);
903 _price_base_multiplier[price] = Clamp(factor, MIN_PRICE_MODIFIER, MAX_PRICE_MODIFIER);
904 }
905
910 void StartupIndustryDailyChanges(bool init_counter)
911 {
912 uint map_size = MapLogX() + MapLogY();
913 /* After getting map size, it needs to be scaled appropriately and divided by 31,
914 * which stands for the days in a month.
915 * Using just 31 will make it so that a monthly reset (based on the real number of days of that month)
916 * would not be needed.
917 * Since it is based on "fractional parts", the leftover days will not make much of a difference
918 * on the overall total number of changes performed */
919 _economy.industry_daily_increment = (1 << map_size) / 31;
920
921 if (init_counter) {
922 /* A new game or a savegame from an older version will require the counter to be initialized */
923 _economy.industry_daily_change_counter = 0;
924 }
925 }
926
927 void StartupEconomy()
928 {
929 _economy.interest_rate = _settings_game.difficulty.initial_interest;
930 _economy.infl_amount = _settings_game.difficulty.initial_interest;
931 _economy.infl_amount_pr = max(0, _settings_game.difficulty.initial_interest - 1);
932 _economy.fluct = GB(Random(), 0, 8) + 168;
933
934 /* Set up prices */
935 RecomputePrices();
936
937 StartupIndustryDailyChanges(true); // As we are starting a new game, initialize the counter too
938
939 }
940
944 void InitializeEconomy()
945 {
946 _economy.inflation_prices = _economy.inflation_payment = 1 << 16;
947 ClearCargoPickupMonitoring();
948 ClearCargoDeliveryMonitoring();
949 }
950
959 Money GetPrice(Price index, uint cost_factor, const GRFFile *grf_file, int shift)
960 {
961 if (index >= PR_END) return 0;
962
963 Money cost = _price[index] * cost_factor;
964 if (grf_file != NULL) shift += grf_file->price_base_multipliers[index];
965
966 if (shift >= 0) {
967 cost <<= shift;
968 } else {
969 cost >>= -shift;
970 }
971
972 return cost;
973 }
974
975 Money GetTransportedGoodsIncome(uint num_pieces, uint dist, byte transit_days, CargoID cargo_type)
976 {
977 const CargoSpec *cs = CargoSpec::Get(cargo_type);
978 if (!cs->IsValid()) {
979 /* User changed newgrfs and some vehicle still carries some cargo which is no longer available. */
980 return 0;
981 }
982
983 /* Use callback to calculate cargo profit, if available */
984 if (HasBit(cs->callback_mask, CBM_CARGO_PROFIT_CALC)) {
985 uint32 var18 = min(dist, 0xFFFF) | (min(num_pieces, 0xFF) << 16) | (transit_days << 24);
986 uint16 callback = GetCargoCallback(CBID_CARGO_PROFIT_CALC, 0, var18, cs);
987 if (callback != CALLBACK_FAILED) {
988 int result = GB(callback, 0, 14);
989
990 /* Simulate a 15 bit signed value */
991 if (HasBit(callback, 14)) result -= 0x4000;
992
993 /* "The result should be a signed multiplier that gets multiplied
994 * by the amount of cargo moved and the price factor, then gets
995 * divided by 8192." */
996 return result * num_pieces * cs->current_payment / 8192;
997 }
998 }
999
1000 static const int MIN_TIME_FACTOR = 31;
1001 static const int MAX_TIME_FACTOR = 255;
1002
1003 const int days1 = cs->transit_days[0];
1004 const int days2 = cs->transit_days[1];
1005 const int days_over_days1 = max( transit_days - days1, 0);
1006 const int days_over_days2 = max(days_over_days1 - days2, 0);
1007
1008 /*
1009 * The time factor is calculated based on the time it took
1010 * (transit_days) compared two cargo-depending values. The
1011 * range is divided into three parts:
1012 *
1013 * - constant for fast transits
1014 * - linear decreasing with time with a slope of -1 for medium transports
1015 * - linear decreasing with time with a slope of -2 for slow transports
1016 *
1017 */
1018 const int time_factor = max(MAX_TIME_FACTOR - days_over_days1 - days_over_days2, MIN_TIME_FACTOR);
1019
1020 return BigMulS(dist * time_factor * num_pieces, cs->current_payment, 21);
1021 }
1022
1024 static SmallIndustryList _cargo_delivery_destinations;
1025
1035 static uint DeliverGoodsToIndustry(const Station *st, CargoID cargo_type, uint num_pieces, IndustryID source)
1036 {
1037 /* Find the nearest industrytile to the station sign inside the catchment area, whose industry accepts the cargo.
1038 * This fails in three cases:
1039 * 1) The station accepts the cargo because there are enough houses around it accepting the cargo.
1040 * 2) The industries in the catchment area temporarily reject the cargo, and the daily station loop has not yet updated station acceptance.
1041 * 3) The results of callbacks CBID_INDUSTRY_REFUSE_CARGO and CBID_INDTILE_CARGO_ACCEPTANCE are inconsistent. (documented behaviour)
1042 */
1043
1044 uint accepted = 0;
1045
1046 for (uint i = 0; i < st->industries_near.Length() && num_pieces != 0; i++) {
1047 Industry *ind = st->industries_near[i];
1048 if (ind->index == source) continue;
1049
1050 uint cargo_index;
1051 for (cargo_index = 0; cargo_index < lengthof(ind->accepts_cargo); cargo_index++) {
1052 if (cargo_type == ind->accepts_cargo[cargo_index]) break;
1053 }
1054 /* Check if matching cargo has been found */
1055 if (cargo_index >= lengthof(ind->accepts_cargo)) continue;
1056
1057 /* Check if industry temporarily refuses acceptance */
1058 if (IndustryTemporarilyRefusesCargo(ind, cargo_type)) continue;
1059
1060 /* Insert the industry into _cargo_delivery_destinations, if not yet contained */
1061 _cargo_delivery_destinations.Include(ind);
1062
1063 uint amount = min(num_pieces, 0xFFFFU - ind->incoming_cargo_waiting[cargo_index]);
1064 ind->incoming_cargo_waiting[cargo_index] += amount;
1065 num_pieces -= amount;
1066 accepted += amount;
1067 }
1068
1069 return accepted;
1070 }
1071
1085 static Money DeliverGoods(int num_pieces, CargoID cargo_type, StationID dest, TileIndex source_tile, byte days_in_transit, Company *company, SourceType src_type, SourceID src)
1086 {
1087 assert(num_pieces > 0);
1088
1089 Station *st = Station::Get(dest);
1090
1091 /* Give the goods to the industry. */
1092 uint accepted = DeliverGoodsToIndustry(st, cargo_type, num_pieces, src_type == ST_INDUSTRY ? src : INVALID_INDUSTRY);
1093
1094 /* If this cargo type is always accepted, accept all */
1095 if (HasBit(st->always_accepted, cargo_type)) accepted = num_pieces;
1096
1097 /* Update station statistics */
1098 if (accepted > 0) {
1099 SetBit(st->goods[cargo_type].status, GoodsEntry::GES_EVER_ACCEPTED);
1100 SetBit(st->goods[cargo_type].status, GoodsEntry::GES_CURRENT_MONTH);
1101 SetBit(st->goods[cargo_type].status, GoodsEntry::GES_ACCEPTED_BIGTICK);
1102 }
1103
1104 /* Update company statistics */
1105 company->cur_economy.delivered_cargo[cargo_type] += accepted;
1106
1107 /* Increase town's counter for town effects */
1108 const CargoSpec *cs = CargoSpec::Get(cargo_type);
1109 st->town->received[cs->town_effect].new_act += accepted;
1110
1111 /* Determine profit */
1112 Money profit = GetTransportedGoodsIncome(accepted, DistanceManhattan(source_tile, st->xy), days_in_transit, cargo_type);
1113
1114 /* Update the cargo monitor. */
1115 AddCargoDelivery(cargo_type, company->index, accepted, src_type, src, st);
1116
1117 /* Modify profit if a subsidy is in effect */
1118 if (CheckSubsidised(cargo_type, company->index, src_type, src, st)) {
1119 switch (_settings_game.difficulty.subsidy_multiplier) {
1120 case 0: profit += profit >> 1; break;
1121 case 1: profit *= 2; break;
1122 case 2: profit *= 3; break;
1123 default: profit *= 4; break;
1124 }
1125 }
1126
1127 return profit;
1128 }
1129
1135 static void TriggerIndustryProduction(Industry *i)
1136 {
1137 const IndustrySpec *indspec = GetIndustrySpec(i->type);
1138 uint16 callback = indspec->callback_mask;
1139
1140 i->was_cargo_delivered = true;
1141 i->last_cargo_accepted_at = _date;
1142
1143 if (HasBit(callback, CBM_IND_PRODUCTION_CARGO_ARRIVAL) || HasBit(callback, CBM_IND_PRODUCTION_256_TICKS)) {
1144 if (HasBit(callback, CBM_IND_PRODUCTION_CARGO_ARRIVAL)) {
1145 IndustryProductionCallback(i, 0);
1146 } else {
1147 SetWindowDirty(WC_INDUSTRY_VIEW, i->index);
1148 }
1149 } else {
1150 for (uint cargo_index = 0; cargo_index < lengthof(i->incoming_cargo_waiting); cargo_index++) {
1151 uint cargo_waiting = i->incoming_cargo_waiting[cargo_index];
1152 if (cargo_waiting == 0) continue;
1153
1154 i->produced_cargo_waiting[0] = min(i->produced_cargo_waiting[0] + (cargo_waiting * indspec->input_cargo_multiplier[cargo_index][0] / 256), 0xFFFF);
1155 i->produced_cargo_waiting[1] = min(i->produced_cargo_waiting[1] + (cargo_waiting * indspec->input_cargo_multiplier[cargo_index][1] / 256), 0xFFFF);
1156
1157 i->incoming_cargo_waiting[cargo_index] = 0;
1158 }
1159 }
1160
1161 TriggerIndustry(i, INDUSTRY_TRIGGER_RECEIVED_CARGO);
1162 StartStopIndustryTileAnimation(i, IAT_INDUSTRY_RECEIVED_CARGO);
1163 }
1164
1169 CargoPayment::CargoPayment(Vehicle *front) :
1170 front(front),
1171 current_station(front->last_station_visited)
1172 {
1173 }
1174
1175 CargoPayment::~CargoPayment()
1176 {
1177 if (this->CleaningPool()) return;
1178
1179 this->front->cargo_payment = NULL;
1180
1181 if (this->visual_profit == 0 && this->visual_transfer == 0) return;
1182
1183 Backup<CompanyByte> cur_company(_current_company, this->front->owner, FILE_LINE);
1184
1185 SubtractMoneyFromCompany(CommandCost(this->front->GetExpenseType(true), -this->route_profit));
1186 this->front->profit_this_year += (this->visual_profit + this->visual_transfer) << 8;
1187
1188 if (this->route_profit != 0 && IsLocalCompany() && !PlayVehicleSound(this->front, VSE_LOAD_UNLOAD)) {
1189 SndPlayVehicleFx(SND_14_CASHTILL, this->front);
1190 }
1191
1192 if (this->visual_transfer != 0) {
1193 ShowFeederIncomeAnimation(this->front->x_pos, this->front->y_pos,
1194 this->front->z_pos, this->visual_transfer, -this->visual_profit);
1195 } else if (this->visual_profit != 0) {
1196 ShowCostOrIncomeAnimation(this->front->x_pos, this->front->y_pos,
1197 this->front->z_pos, -this->visual_profit);
1198 }
1199
1200 cur_company.Restore();
1201 }
1202
1208 void CargoPayment::PayFinalDelivery(const CargoPacket *cp, uint count)
1209 {
1210 if (this->owner == NULL) {
1211 this->owner = Company::Get(this->front->owner);
1212 }
1213
1214 /* Handle end of route payment */
1215 Money profit = DeliverGoods(count, this->ct, this->current_station, cp->SourceStationXY(), cp->DaysInTransit(), this->owner, cp->SourceSubsidyType(), cp->SourceSubsidyID());
1216 this->route_profit += profit;
1217
1218 /* The vehicle's profit is whatever route profit there is minus feeder shares. */
1219 this->visual_profit += profit - cp->FeederShare(count);
1220 }
1221
1228 Money CargoPayment::PayTransfer(const CargoPacket *cp, uint count)
1229 {
1230 Money profit = GetTransportedGoodsIncome(
1231 count,
1232 /* pay transfer vehicle for only the part of transfer it has done: ie. cargo_loaded_at_xy to here */
1233 DistanceManhattan(cp->LoadedAtXY(), Station::Get(this->current_station)->xy),
1234 cp->DaysInTransit(),
1235 this->ct);
1236
1237 profit = profit * _settings_game.economy.feeder_payment_share / 100;
1238
1239 this->visual_transfer += profit; // accumulate transfer profits for whole vehicle
1240 return profit; // account for the (virtual) profit already made for the cargo packet
1241 }
1242
1248 void PrepareUnload(Vehicle *front_v)
1249 {
1250 Station *curr_station = Station::Get(front_v->last_station_visited);
1251 curr_station->loading_vehicles.push_back(front_v);
1252
1253 /* At this moment loading cannot be finished */
1254 ClrBit(front_v->vehicle_flags, VF_LOADING_FINISHED);
1255
1256 /* Start unloading at the first possible moment */
1257 front_v->load_unload_ticks = 1;
1258
1259 assert(front_v->cargo_payment == NULL);
1260 /* One CargoPayment per vehicle and the vehicle limit equals the
1261 * limit in number of CargoPayments. Can't go wrong. */
1262 assert_compile(CargoPaymentPool::MAX_SIZE == VehiclePool::MAX_SIZE);
1263 assert(CargoPayment::CanAllocateItem());
1264 front_v->cargo_payment = new CargoPayment(front_v);
1265
1266 StationIDStack next_station = front_v->GetNextStoppingStation();
1267 if (front_v->orders.list == NULL || (front_v->current_order.GetUnloadType() & OUFB_NO_UNLOAD) == 0) {
1268 Station *st = Station::Get(front_v->last_station_visited);
1269 for (Vehicle *v = front_v; v != NULL; v = v->Next()) {
1270 const GoodsEntry *ge = &st->goods[v->cargo_type];
1271 if (v->cargo_cap > 0 && v->cargo.TotalCount() > 0) {
1272 v->cargo.Stage(
1273 HasBit(ge->status, GoodsEntry::GES_ACCEPTANCE),
1274 front_v->last_station_visited, next_station,
1275 front_v->current_order.GetUnloadType(), ge,
1276 front_v->cargo_payment);
1277 if (v->cargo.UnloadCount() > 0) SetBit(v->vehicle_flags, VF_CARGO_UNLOADING);
1278 }
1279 }
1280 }
1281 }
1282
1289 static uint GetLoadAmount(Vehicle *v)
1290 {
1291 const Engine *e = v->GetEngine();
1292 uint load_amount = e->info.load_amount;
1293
1294 /* The default loadamount for mail is 1/4 of the load amount for passengers */
1295 bool air_mail = v->type == VEH_AIRCRAFT && !Aircraft::From(v)->IsNormalAircraft();
1296 if (air_mail) load_amount = CeilDiv(load_amount, 4);
1297
1298 if (_settings_game.order.gradual_loading) {
1299 uint16 cb_load_amount = CALLBACK_FAILED;
1300 if (e->GetGRF() != NULL && e->GetGRF()->grf_version >= 8) {
1301 /* Use callback 36 */
1302 cb_load_amount = GetVehicleProperty(v, PROP_VEHICLE_LOAD_AMOUNT, CALLBACK_FAILED);
1303 } else if (HasBit(e->info.callback_mask, CBM_VEHICLE_LOAD_AMOUNT)) {
1304 /* Use callback 12 */
1305 cb_load_amount = GetVehicleCallback(CBID_VEHICLE_LOAD_AMOUNT, 0, 0, v->engine_type, v);
1306 }
1307 if (cb_load_amount != CALLBACK_FAILED) {
1308 if (e->GetGRF()->grf_version < 8) cb_load_amount = GB(cb_load_amount, 0, 8);
1309 if (cb_load_amount >= 0x100) {
1310 ErrorUnknownCallbackResult(e->GetGRFID(), CBID_VEHICLE_LOAD_AMOUNT, cb_load_amount);
1311 } else if (cb_load_amount != 0) {
1312 load_amount = cb_load_amount;
1313 }
1314 }
1315 }
1316
1317 /* Scale load amount the same as capacity */
1318 if (HasBit(e->info.misc_flags, EF_NO_DEFAULT_CARGO_MULTIPLIER) && !air_mail) load_amount = CeilDiv(load_amount * CargoSpec::Get(v->cargo_type)->multiplier, 0x100);
1319
1320 /* Zero load amount breaks a lot of things. */
1321 return max(1u, load_amount);
1322 }
1323
1333 template<class Taction>
1334 bool IterateVehicleParts(Vehicle *v, Taction action)
1335 {
1336 for (Vehicle *w = v; w != NULL;
1337 w = w->HasArticulatedPart() ? w->GetNextArticulatedPart() : NULL) {
1338 if (!action(w)) return false;
1339 if (w->type == VEH_TRAIN) {
1340 Train *train = Train::From(w);
1341 if (train->IsMultiheaded() && !action(train->other_multiheaded_part)) return false;
1342 }
1343 }
1344 if (v->type == VEH_AIRCRAFT && Aircraft::From(v)->IsNormalAircraft()) return action(v->Next());
1345 return true;
1346 }
1347
1351 struct IsEmptyAction
1352 {
1358 bool operator()(const Vehicle *v)
1359 {
1360 return v->cargo.StoredCount() == 0;
1361 }
1362 };
1363
1367 struct PrepareRefitAction
1368 {
1369 CargoArray &consist_capleft;
1370 uint32 &refit_mask;
1371
1377 PrepareRefitAction(CargoArray &consist_capleft, uint32 &refit_mask) :
1378 consist_capleft(consist_capleft), refit_mask(refit_mask) {}
1379
1386 bool operator()(const Vehicle *v)
1387 {
1388 this->consist_capleft[v->cargo_type] -= v->cargo_cap - v->cargo.ReservedCount();
1389 this->refit_mask |= EngInfo(v->engine_type)->refit_mask;
1390 return true;
1391 }
1392 };
1393
1397 struct ReturnCargoAction
1398 {
1399 Station *st;
1400 StationID next_hop;
1401
1407 ReturnCargoAction(Station *st, StationID next_one) : st(st), next_hop(next_one) {}
1408
1414 bool operator()(Vehicle *v)
1415 {
1416 v->cargo.Return(UINT_MAX, &this->st->goods[v->cargo_type].cargo, this->next_hop);
1417 return true;
1418 }
1419 };
1420
1424 struct FinalizeRefitAction
1425 {
1426 CargoArray &consist_capleft;
1427 Station *st;
1428 StationIDStack &next_station;
1429 bool do_reserve;
1430
1438 FinalizeRefitAction(CargoArray &consist_capleft, Station *st, StationIDStack &next_station, bool do_reserve) :
1439 consist_capleft(consist_capleft), st(st), next_station(next_station), do_reserve(do_reserve) {}
1440
1447 bool operator()(Vehicle *v)
1448 {
1449 if (this->do_reserve) {
1450 this->st->goods[v->cargo_type].cargo.Reserve(v->cargo_cap - v->cargo.RemainingCount(),
1451 &v->cargo, st->xy, this->next_station);
1452 }
1453 this->consist_capleft[v->cargo_type] += v->cargo_cap - v->cargo.RemainingCount();
1454 return true;
1455 }
1456 };
1457
1466 static void HandleStationRefit(Vehicle *v, CargoArray &consist_capleft, Station *st, StationIDStack next_station, CargoID new_cid)
1467 {
1468 Vehicle *v_start = v->GetFirstEnginePart();
1469 if (!IterateVehicleParts(v_start, IsEmptyAction())) return;
1470
1471 Backup<CompanyByte> cur_company(_current_company, v->owner, FILE_LINE);
1472
1473 uint32 refit_mask = v->GetEngine()->info.refit_mask;
1474
1475 /* Remove old capacity from consist capacity and collect refit mask. */
1476 IterateVehicleParts(v_start, PrepareRefitAction(consist_capleft, refit_mask));
1477
1478 bool is_auto_refit = new_cid == CT_AUTO_REFIT;
1479 if (is_auto_refit) {
1480 /* Get a refittable cargo type with waiting cargo for next_station or INVALID_STATION. */
1481 CargoID cid;
1482 new_cid = v_start->cargo_type;
1483 FOR_EACH_SET_CARGO_ID(cid, refit_mask) {
1484 if (st->goods[cid].cargo.HasCargoFor(next_station)) {
1485 /* Try to find out if auto-refitting would succeed. In case the refit is allowed,
1486 * the returned refit capacity will be greater than zero. */
1487 DoCommand(v_start->tile, v_start->index, cid | 1U << 6 | 0xFF << 8 | 1U << 16, DC_QUERY_COST, GetCmdRefitVeh(v_start)); // Auto-refit and only this vehicle including artic parts.
1488 /* Try to balance different loadable cargoes between parts of the consist, so that
1489 * all of them can be loaded. Avoid a situation where all vehicles suddenly switch
1490 * to the first loadable cargo for which there is only one packet. If the capacities
1491 * are equal refit to the cargo of which most is available. This is important for
1492 * consists of only a single vehicle as those will generally have a consist_capleft
1493 * of 0 for all cargoes. */
1494 if (_returned_refit_capacity > 0 && (consist_capleft[cid] < consist_capleft[new_cid] ||
1495 (consist_capleft[cid] == consist_capleft[new_cid] &&
1496 st->goods[cid].cargo.AvailableCount() > st->goods[new_cid].cargo.AvailableCount()))) {
1497 new_cid = cid;
1498 }
1499 }
1500 }
1501 }
1502
1503 /* Refit if given a valid cargo. */
1504 if (new_cid < NUM_CARGO && new_cid != v_start->cargo_type) {
1505 /* INVALID_STATION because in the DT_MANUAL case that's correct and in the DT_(A)SYMMETRIC
1506 * cases the next hop of the vehicle doesn't really tell us anything if the cargo had been
1507 * "via any station" before reserving. We rather produce some more "any station" cargo than
1508 * misrouting it. */
1509 IterateVehicleParts(v_start, ReturnCargoAction(st, INVALID_STATION));
1510 CommandCost cost = DoCommand(v_start->tile, v_start->index, new_cid | 1U << 6 | 0xFF << 8 | 1U << 16, DC_EXEC, GetCmdRefitVeh(v_start)); // Auto-refit and only this vehicle including artic parts.
1511 if (cost.Succeeded()) v->First()->profit_this_year -= cost.GetCost() << 8;
1512 }
1513
1514 /* Add new capacity to consist capacity and reserve cargo */
1515 IterateVehicleParts(v_start, FinalizeRefitAction(consist_capleft, st, next_station,
1516 is_auto_refit || (v->First()->current_order.GetLoadType() & OLFB_FULL_LOAD) != 0));
1517
1518 cur_company.Restore();
1519 }
1520
1521 struct ReserveCargoAction {
1522 Station *st;
1523 StationIDStack *next_station;
1524
1525 ReserveCargoAction(Station *st, StationIDStack *next_station) :
1526 st(st), next_station(next_station) {}
1527
1528 bool operator()(Vehicle *v)
1529 {
1530 if (v->cargo_cap > v->cargo.RemainingCount()) {
1531 st->goods[v->cargo_type].cargo.Reserve(v->cargo_cap - v->cargo.RemainingCount(),
1532 &v->cargo, st->xy, *next_station);
1533 }
1534
1535 return true;
1536 }
1537
1538 };
1539
1548 static void ReserveConsist(Station *st, Vehicle *u, CargoArray *consist_capleft, StationIDStack *next_station)
1549 {
1550 /* If there is a cargo payment not all vehicles of the consist have tried to do the refit.
1551 * In that case, only reserve if it's a fixed refit and the equivalent of "articulated chain"
1552 * a vehicle belongs to already has the right cargo. */
1553 bool must_reserve = !u->current_order.IsRefit() || u->cargo_payment == NULL;
1554 for (Vehicle *v = u; v != NULL; v = v->Next()) {
1555 assert(v->cargo_cap >= v->cargo.RemainingCount());
1556
1557 /* Exclude various ways in which the vehicle might not be the head of an equivalent of
1558 * "articulated chain". Also don't do the reservation if the vehicle is going to refit
1559 * to a different cargo and hasn't tried to do so, yet. */
1560 if (!v->IsArticulatedPart() &&
1561 (v->type != VEH_TRAIN || !Train::From(v)->IsRearDualheaded()) &&
1562 (v->type != VEH_AIRCRAFT || Aircraft::From(v)->IsNormalAircraft()) &&
1563 (must_reserve || u->current_order.GetRefitCargo() == v->cargo_type)) {
1564 IterateVehicleParts(v, ReserveCargoAction(st, next_station));
1565 }
1566 if (consist_capleft == NULL || v->cargo_cap == 0) continue;
1567 (*consist_capleft)[v->cargo_type] += v->cargo_cap - v->cargo.RemainingCount();
1568 }
1569 }
1570
1578 static void UpdateLoadUnloadTicks(Vehicle *front, const Station *st, int ticks)
1579 {
1580 if (front->type == VEH_TRAIN) {
1581 /* Each platform tile is worth 2 rail vehicles. */
1582 int overhang = front->GetGroundVehicleCache()->cached_total_length - st->GetPlatformLength(front->tile) * TILE_SIZE;
1583 if (overhang > 0) {
1584 ticks <<= 1;
1585 ticks += (overhang * ticks) / 8;
1586 }
1587 }
1588 /* Always wait at least 1, otherwise we'll wait 'infinitively' long. */
1589 front->load_unload_ticks = max(1, ticks);
1590 }
1591
1596 static void LoadUnloadVehicle(Vehicle *front)
1597 {
1598 assert(front->current_order.IsType(OT_LOADING));
1599
1600 StationID last_visited = front->last_station_visited;
1601 Station *st = Station::Get(last_visited);
1602
1603 StationIDStack next_station = front->GetNextStoppingStation();
1604 bool use_autorefit = front->current_order.IsRefit() && front->current_order.GetRefitCargo() == CT_AUTO_REFIT;
1605 CargoArray consist_capleft;
1606 if (_settings_game.order.improved_load && use_autorefit ?
1607 front->cargo_payment == NULL : (front->current_order.GetLoadType() & OLFB_FULL_LOAD) != 0) {
1608 ReserveConsist(st, front,
1609 (use_autorefit && front->load_unload_ticks != 0) ? &consist_capleft : NULL,
1610 &next_station);
1611 }
1612
1613 /* We have not waited enough time till the next round of loading/unloading */
1614 if (front->load_unload_ticks != 0) return;
1615
1616 if (front->type == VEH_TRAIN && (!IsTileType(front->tile, MP_STATION) || GetStationIndex(front->tile) != st->index)) {
1617 /* The train reversed in the station. Take the "easy" way
1618 * out and let the train just leave as it always did. */
1619 SetBit(front->vehicle_flags, VF_LOADING_FINISHED);
1620 front->load_unload_ticks = 1;
1621 return;
1622 }
1623
1624 int new_load_unload_ticks = 0;
1625 bool dirty_vehicle = false;
1626 bool dirty_station = false;
1627
1628 bool completely_emptied = true;
1629 bool anything_unloaded = false;
1630 bool anything_loaded = false;
1631 uint32 full_load_amount = 0;
1632 uint32 cargo_not_full = 0;
1633 uint32 cargo_full = 0;
1634 uint32 reservation_left = 0;
1635
1636 front->cur_speed = 0;
1637
1638 CargoPayment *payment = front->cargo_payment;
1639
1640 uint artic_part = 0; // Articulated part we are currently trying to load. (not counting parts without capacity)
1641 for (Vehicle *v = front; v != NULL; v = v->Next()) {
1642 if (v == front || !v->Previous()->HasArticulatedPart()) artic_part = 0;
1643 if (v->cargo_cap == 0) continue;
1644 artic_part++;
1645
1646 GoodsEntry *ge = &st->goods[v->cargo_type];
1647
1648 if (HasBit(v->vehicle_flags, VF_CARGO_UNLOADING) && (front->current_order.GetUnloadType() & OUFB_NO_UNLOAD) == 0) {
1649 uint cargo_count = v->cargo.UnloadCount();
1650 uint amount_unloaded = _settings_game.order.gradual_loading ? min(cargo_count, GetLoadAmount(v)) : cargo_count;
1651 bool remaining = false; // Are there cargo entities in this vehicle that can still be unloaded here?
1652
1653 assert(payment != NULL);
1654 payment->SetCargo(v->cargo_type);
1655
1656 if (!HasBit(ge->status, GoodsEntry::GES_ACCEPTANCE) && v->cargo.ActionCount(VehicleCargoList::MTA_DELIVER) > 0) {
1657 /* The station does not accept our goods anymore. */
1658 if (front->current_order.GetUnloadType() & (OUFB_TRANSFER | OUFB_UNLOAD)) {
1659 /* Transfer instead of delivering. */
1660 v->cargo.Reassign<VehicleCargoList::MTA_DELIVER, VehicleCargoList::MTA_TRANSFER>(
1661 v->cargo.ActionCount(VehicleCargoList::MTA_DELIVER), INVALID_STATION);
1662 } else {
1663 uint new_remaining = v->cargo.RemainingCount() + v->cargo.ActionCount(VehicleCargoList::MTA_DELIVER);
1664 if (v->cargo_cap < new_remaining) {
1665 /* Return some of the reserved cargo to not overload the vehicle. */
1666 v->cargo.Return(new_remaining - v->cargo_cap, &ge->cargo, INVALID_STATION);
1667 }
1668
1669 /* Keep instead of delivering. This may lead to no cargo being unloaded, so ...*/
1670 v->cargo.Reassign<VehicleCargoList::MTA_DELIVER, VehicleCargoList::MTA_KEEP>(
1671 v->cargo.ActionCount(VehicleCargoList::MTA_DELIVER));
1672
1673 /* ... say we unloaded something, otherwise we'll think we didn't unload
1674 * something and we didn't load something, so we must be finished
1675 * at this station. Setting the unloaded means that we will get a
1676 * retry for loading in the next cycle. */
1677 anything_unloaded = true;
1678 }
1679 }
1680
1681 if (v->cargo.ActionCount(VehicleCargoList::MTA_TRANSFER) > 0) {
1682 /* Mark the station dirty if we transfer, but not if we only deliver. */
1683 dirty_station = true;
1684
1685 if (!ge->HasRating()) {
1686 /* Upon transfering cargo, make sure the station has a rating. Fake a pickup for the
1687 * first unload to prevent the cargo from quickly decaying after the initial drop. */
1688 ge->time_since_pickup = 0;
1689 SetBit(ge->status, GoodsEntry::GES_RATING);
1690 }
1691 }
1692
1693 amount_unloaded = v->cargo.Unload(amount_unloaded, &ge->cargo, payment);
1694 remaining = v->cargo.UnloadCount() > 0;
1695 if (amount_unloaded > 0) {
1696 dirty_vehicle = true;
1697 anything_unloaded = true;
1698 new_load_unload_ticks += amount_unloaded;
1699
1700 /* Deliver goods to the station */
1701 st->time_since_unload = 0;
1702 }
1703
1704 if (_settings_game.order.gradual_loading && remaining) {
1705 completely_emptied = false;
1706 } else {
1707 /* We have finished unloading (cargo count == 0) */
1708 ClrBit(v->vehicle_flags, VF_CARGO_UNLOADING);
1709 }
1710
1711 continue;
1712 }
1713
1714 /* Do not pick up goods when we have no-load set or loading is stopped. */
1715 if (front->current_order.GetLoadType() & OLFB_NO_LOAD || HasBit(front->vehicle_flags, VF_STOP_LOADING)) continue;
1716
1717 /* This order has a refit, if this is the first vehicle part carrying cargo and the whole vehicle is empty, try refitting. */
1718 if (front->current_order.IsRefit() && artic_part == 1) {
1719 HandleStationRefit(v, consist_capleft, st, next_station, front->current_order.GetRefitCargo());
1720 ge = &st->goods[v->cargo_type];
1721 }
1722
1723 /* As we're loading here the following link can carry the full capacity of the vehicle. */
1724 v->refit_cap = v->cargo_cap;
1725
1726 /* update stats */
1727 int t;
1728 switch (front->type) {
1729 case VEH_TRAIN:
1730 case VEH_SHIP:
1731 t = front->vcache.cached_max_speed;
1732 break;
1733
1734 case VEH_ROAD:
1735 t = front->vcache.cached_max_speed / 2;
1736 break;
1737
1738 case VEH_AIRCRAFT:
1739 t = Aircraft::From(front)->GetSpeedOldUnits(); // Convert to old units.
1740 break;
1741
1742 default: NOT_REACHED();
1743 }
1744
1745 /* if last speed is 0, we treat that as if no vehicle has ever visited the station. */
1746 ge->last_speed = min(t, 255);
1747 ge->last_age = min(_cur_year - front->build_year, 255);
1748 ge->time_since_pickup = 0;
1749
1750 assert(v->cargo_cap >= v->cargo.StoredCount());
1751 /* If there's goods waiting at the station, and the vehicle
1752 * has capacity for it, load it on the vehicle. */
1753 uint cap_left = v->cargo_cap - v->cargo.StoredCount();
1754 if (cap_left > 0 && (v->cargo.ActionCount(VehicleCargoList::MTA_LOAD) > 0 || ge->cargo.AvailableCount() > 0)) {
1755 if (v->cargo.StoredCount() == 0) TriggerVehicle(v, VEHICLE_TRIGGER_NEW_CARGO);
1756 if (_settings_game.order.gradual_loading) cap_left = min(cap_left, GetLoadAmount(v));
1757
1758 uint loaded = ge->cargo.Load(cap_left, &v->cargo, st->xy, next_station);
1759 if (v->cargo.ActionCount(VehicleCargoList::MTA_LOAD) > 0) {
1760 /* Remember if there are reservations left so that we don't stop
1761 * loading before they're loaded. */
1762 SetBit(reservation_left, v->cargo_type);
1763 }
1764
1765 /* Store whether the maximum possible load amount was loaded or not.*/
1766 if (loaded == cap_left) {
1767 SetBit(full_load_amount, v->cargo_type);
1768 } else {
1769 ClrBit(full_load_amount, v->cargo_type);
1770 }
1771
1772 /* TODO: Regarding this, when we do gradual loading, we
1773 * should first unload all vehicles and then start
1774 * loading them. Since this will cause
1775 * VEHICLE_TRIGGER_EMPTY to be called at the time when
1776 * the whole vehicle chain is really totally empty, the
1777 * completely_emptied assignment can then be safely
1778 * removed; that's how TTDPatch behaves too. --pasky */
1779 if (loaded > 0) {
1780 completely_emptied = false;
1781 anything_loaded = true;
1782
1783 st->time_since_load = 0;
1784 st->last_vehicle_type = v->type;
1785
1786 if (ge->cargo.TotalCount() == 0) {
1787 TriggerStationRandomisation(st, st->xy, SRT_CARGO_TAKEN, v->cargo_type);
1788 TriggerStationAnimation(st, st->xy, SAT_CARGO_TAKEN, v->cargo_type);
1789 AirportAnimationTrigger(st, AAT_STATION_CARGO_TAKEN, v->cargo_type);
1790 }
1791
1792 new_load_unload_ticks += loaded;
1793
1794 dirty_vehicle = dirty_station = true;
1795 }
1796 }
1797
1798 if (v->cargo.StoredCount() >= v->cargo_cap) {
1799 SetBit(cargo_full, v->cargo_type);
1800 } else {
1801 SetBit(cargo_not_full, v->cargo_type);
1802 }
1803 }
1804
1805 if (anything_loaded || anything_unloaded) {
1806 if (front->type == VEH_TRAIN) {
1807 TriggerStationRandomisation(st, front->tile, SRT_TRAIN_LOADS);
1808 TriggerStationAnimation(st, front->tile, SAT_TRAIN_LOADS);
1809 }
1810 }
1811
1812 /* Only set completely_emptied, if we just unloaded all remaining cargo */
1813 completely_emptied &= anything_unloaded;
1814
1815 if (!anything_unloaded) delete payment;
1816
1817 ClrBit(front->vehicle_flags, VF_STOP_LOADING);
1818 if (anything_loaded || anything_unloaded) {
1819 if (_settings_game.order.gradual_loading) {
1820 /* The time it takes to load one 'slice' of cargo or passengers depends
1821 * on the vehicle type - the values here are those found in TTDPatch */
1822 const uint gradual_loading_wait_time[] = { 40, 20, 10, 20 };
1823
1824 new_load_unload_ticks = gradual_loading_wait_time[front->type];
1825 }
1826 /* We loaded less cargo than possible for all cargo types and it's not full
1827 * load and we're not supposed to wait any longer: stop loading. */
1828 if (!anything_unloaded && full_load_amount == 0 && reservation_left == 0 && !(front->current_order.GetLoadType() & OLFB_FULL_LOAD) &&
1829 front->current_order_time >= (uint)max(front->current_order.GetTimetabledWait() - front->lateness_counter, 0)) {
1830 SetBit(front->vehicle_flags, VF_STOP_LOADING);
1831 }
1832
1833 UpdateLoadUnloadTicks(front, st, new_load_unload_ticks);
1834 } else {
1835 UpdateLoadUnloadTicks(front, st, 20); // We need the ticks for link refreshing.
1836 bool finished_loading = true;
1837 if (front->current_order.GetLoadType() & OLFB_FULL_LOAD) {
1838 if (front->current_order.GetLoadType() == OLF_FULL_LOAD_ANY) {
1839 /* if the aircraft carries passengers and is NOT full, then
1840 * continue loading, no matter how much mail is in */
1841 if ((front->type == VEH_AIRCRAFT && IsCargoInClass(front->cargo_type, CC_PASSENGERS) && front->cargo_cap > front->cargo.StoredCount()) ||
1842 (cargo_not_full && (cargo_full & ~cargo_not_full) == 0)) { // There are still non-full cargoes
1843 finished_loading = false;
1844 }
1845 } else if (cargo_not_full != 0) {
1846 finished_loading = false;
1847 }
1848
1849 /* Refresh next hop stats if we're full loading to make the links
1850 * known to the distribution algorithm and allow cargo to be sent
1851 * along them. Otherwise the vehicle could wait for cargo
1852 * indefinitely if it hasn't visited the other links yet, or if the
1853 * links die while it's loading. */
1854 if (!finished_loading) LinkRefresher::Run(front, true, true);
1855 }
1856
1857 SB(front->vehicle_flags, VF_LOADING_FINISHED, 1, finished_loading);
1858 }
1859
1860 /* Calculate the loading indicator fill percent and display
1861 * In the Game Menu do not display indicators
1862 * If _settings_client.gui.loading_indicators == 2, show indicators (bool can be promoted to int as 0 or 1 - results in 2 > 0,1 )
1863 * if _settings_client.gui.loading_indicators == 1, _local_company must be the owner or must be a spectator to show ind., so 1 > 0
1864 * if _settings_client.gui.loading_indicators == 0, do not display indicators ... 0 is never greater than anything
1865 */
1866 if (_game_mode != GM_MENU && (_settings_client.gui.loading_indicators > (uint)(front->owner != _local_company && _local_company != COMPANY_SPECTATOR))) {
1867 StringID percent_up_down = STR_NULL;
1868 int percent = CalcPercentVehicleFilled(front, &percent_up_down);
1869 if (front->fill_percent_te_id == INVALID_TE_ID) {
1870 front->fill_percent_te_id = ShowFillingPercent(front->x_pos, front->y_pos, front->z_pos + 20, percent, percent_up_down);
1871 } else {
1872 UpdateFillingPercent(front->fill_percent_te_id, percent, percent_up_down);
1873 }
1874 }
1875
1876 if (completely_emptied) {
1877 /* Make sure the vehicle is marked dirty, since we need to update the NewGRF
1878 * properties such as weight, power and TE whenever the trigger runs. */
1879 dirty_vehicle = true;
1880 TriggerVehicle(front, VEHICLE_TRIGGER_EMPTY);
1881 }
1882
1883 if (dirty_vehicle) {
1884 SetWindowDirty(GetWindowClassForVehicleType(front->type), front->owner);
1885 SetWindowDirty(WC_VEHICLE_DETAILS, front->index);
1886 front->MarkDirty();
1887 }
1888 if (dirty_station) {
1889 st->MarkTilesDirty(true);
1890 SetWindowDirty(WC_STATION_VIEW, last_visited);
1891 InvalidateWindowData(WC_STATION_LIST, last_visited);
1892 }
1893 }
1894
1900 void LoadUnloadStation(Station *st)
1901 {
1902 /* No vehicle is here... */
1903 if (st->loading_vehicles.empty()) return;
1904
1905 Vehicle *last_loading = NULL;
1906 std::list<Vehicle *>::iterator iter;
1907
1908 /* Check if anything will be loaded at all. Otherwise we don't need to reserve either. */
1909 for (iter = st->loading_vehicles.begin(); iter != st->loading_vehicles.end(); ++iter) {
1910 Vehicle *v = *iter;
1911
1912 if ((v->vehstatus & (VS_STOPPED | VS_CRASHED))) continue;
1913
1914 assert(v->load_unload_ticks != 0);
1915 if (--v->load_unload_ticks == 0) last_loading = v;
1916 }
1917
1918 /* We only need to reserve and load/unload up to the last loading vehicle.
1919 * Anything else will be forgotten anyway after returning from this function.
1920 *
1921 * Especially this means we do _not_ need to reserve cargo for a single
1922 * consist in a station which is not allowed to load yet because its
1923 * load_unload_ticks is still not 0.
1924 */
1925 if (last_loading == NULL) return;
1926
1927 for (iter = st->loading_vehicles.begin(); iter != st->loading_vehicles.end(); ++iter) {
1928 Vehicle *v = *iter;
1929 if (!(v->vehstatus & (VS_STOPPED | VS_CRASHED))) LoadUnloadVehicle(v);
1930 if (v == last_loading) break;
1931 }
1932
1933 /* Call the production machinery of industries */
1934 const Industry * const *isend = _cargo_delivery_destinations.End();
1935 for (Industry **iid = _cargo_delivery_destinations.Begin(); iid != isend; iid++) {
1936 TriggerIndustryProduction(*iid);
1937 }
1938 _cargo_delivery_destinations.Clear();
1939 }
1940
1944 void CompaniesMonthlyLoop()
1945 {
1946 CompaniesGenStatistics();
1947 if (_settings_game.economy.inflation) {
1948 AddInflation();
1949 RecomputePrices();
1950 }
1951 CompaniesPayInterest();
1952 HandleEconomyFluctuations();
1953 }
1954
1955 static void DoAcquireCompany(Company *c)
1956 {
1957 CompanyID ci = c->index;
1958
1959 CompanyNewsInformation *cni = MallocT<CompanyNewsInformation>(1);
1960 cni->FillData(c, Company::Get(_current_company));
1961
1962 SetDParam(0, STR_NEWS_COMPANY_MERGER_TITLE);
1963 SetDParam(1, c->bankrupt_value == 0 ? STR_NEWS_MERGER_TAKEOVER_TITLE : STR_NEWS_COMPANY_MERGER_DESCRIPTION);
1964 SetDParamStr(2, cni->company_name);
1965 SetDParamStr(3, cni->other_company_name);
1966 SetDParam(4, c->bankrupt_value);
1967 AddCompanyNewsItem(STR_MESSAGE_NEWS_FORMAT, cni);
1968 AI::BroadcastNewEvent(new ScriptEventCompanyMerger(ci, _current_company));
1969 Game::NewEvent(new ScriptEventCompanyMerger(ci, _current_company));
1970
1971 ChangeOwnershipOfCompanyItems(ci, _current_company);
1972
1973 if (c->bankrupt_value == 0) {
1974 Company *owner = Company::Get(_current_company);
1975 owner->current_loan += c->current_loan;
1976 }
1977
1978 if (c->is_ai) AI::Stop(c->index);
1979
1980 DeleteCompanyWindows(ci);
1981 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
1982 InvalidateWindowClassesData(WC_SHIPS_LIST, 0);
1983 InvalidateWindowClassesData(WC_ROADVEH_LIST, 0);
1984 InvalidateWindowClassesData(WC_AIRCRAFT_LIST, 0);
1985
1986 delete c;
1987 }
1988
1989 extern int GetAmountOwnedBy(const Company *c, Owner owner);
1990
2000 CommandCost CmdBuyShareInCompany(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2001 {
2002 CommandCost cost(EXPENSES_OTHER);
2003 CompanyID target_company = (CompanyID)p1;
2004 Company *c = Company::GetIfValid(target_company);
2005
2006 /* Check if buying shares is allowed (protection against modified clients)
2007 * Cannot buy own shares */
2008 if (c == NULL || !_settings_game.economy.allow_shares || _current_company == target_company) return CMD_ERROR;
2009
2010 /* Protect new companies from hostile takeovers */
2011 if (_cur_year - c->inaugurated_year < 6) return_cmd_error(STR_ERROR_PROTECTED);
2012
2013 /* Those lines are here for network-protection (clients can be slow) */
2014 if (GetAmountOwnedBy(c, COMPANY_SPECTATOR) == 0) return cost;
2015
2016 if (GetAmountOwnedBy(c, COMPANY_SPECTATOR) == 1) {
2017 if (!c->is_ai) return cost; // We can not buy out a real company (temporarily). TODO: well, enable it obviously.
2018
2019 if (GetAmountOwnedBy(c, _current_company) == 3 && !MayCompanyTakeOver(_current_company, target_company)) return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
2020 }
2021
2022
2023 cost.AddCost(CalculateCompanyValue(c) >> 2);
2024 if (flags & DC_EXEC) {
2025 OwnerByte *b = c->share_owners;
2026
2027 while (*b != COMPANY_SPECTATOR) b++; // share owners is guaranteed to contain at least one COMPANY_SPECTATOR
2028 *b = _current_company;
2029
2030 for (int i = 0; c->share_owners[i] == _current_company;) {
2031 if (++i == 4) {
2032 c->bankrupt_value = 0;
2033 DoAcquireCompany(c);
2034 break;
2035 }
2036 }
2037 InvalidateWindowData(WC_COMPANY, target_company);
2038 CompanyAdminUpdate(c);
2039 }
2040 return cost;
2041 }
2042
2052 CommandCost CmdSellShareInCompany(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2053 {
2054 CompanyID target_company = (CompanyID)p1;
2055 Company *c = Company::GetIfValid(target_company);
2056
2057 /* Cannot sell own shares */
2058 if (c == NULL || _current_company == target_company) return CMD_ERROR;
2059
2060 /* Check if selling shares is allowed (protection against modified clients).
2061 * However, we must sell shares of companies being closed down. */
2062 if (!_settings_game.economy.allow_shares && !(flags & DC_BANKRUPT)) return CMD_ERROR;
2063
2064 /* Those lines are here for network-protection (clients can be slow) */
2065 if (GetAmountOwnedBy(c, _current_company) == 0) return CommandCost();
2066
2067 /* adjust it a little to make it less profitable to sell and buy */
2068 Money cost = CalculateCompanyValue(c) >> 2;
2069 cost = -(cost - (cost >> 7));
2070
2071 if (flags & DC_EXEC) {
2072 OwnerByte *b = c->share_owners;
2073 while (*b != _current_company) b++; // share owners is guaranteed to contain company
2074 *b = COMPANY_SPECTATOR;
2075 InvalidateWindowData(WC_COMPANY, target_company);
2076 CompanyAdminUpdate(c);
2077 }
2078 return CommandCost(EXPENSES_OTHER, cost);
2079 }
2080
2093 CommandCost CmdBuyCompany(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2094 {
2095 CompanyID target_company = (CompanyID)p1;
2096 Company *c = Company::GetIfValid(target_company);
2097 if (c == NULL) return CMD_ERROR;
2098
2099 /* Disable takeovers when not asked */
2100 if (!HasBit(c->bankrupt_asked, _current_company)) return CMD_ERROR;
2101
2102 /* Disable taking over the local company in single player */
2103 if (!_networking && _local_company == c->index) return CMD_ERROR;
2104
2105 /* Do not allow companies to take over themselves */
2106 if (target_company == _current_company) return CMD_ERROR;
2107
2108 /* Disable taking over when not allowed. */
2109 if (!MayCompanyTakeOver(_current_company, target_company)) return CMD_ERROR;
2110
2111 /* Get the cost here as the company is deleted in DoAcquireCompany. */
2112 CommandCost cost(EXPENSES_OTHER, c->bankrupt_value);
2113
2114 if (flags & DC_EXEC) {
2115 DoAcquireCompany(c);
2116 }
2117 return cost;
2118 }