OpenTTD: src/economy.cpp Source File

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economy.cpp
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1 /* $Id: economy.cpp 27981 2018-03-11 12:46:05Z 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 /* Check for bankruptcy each month */
658 Company *c;
659 FOR_ALL_COMPANIES(c) {
660 CompanyCheckBankrupt(c);
661 }
662
663 Backup<CompanyByte> cur_company(_current_company, FILE_LINE);
664
665 if (!_settings_game.economy.infrastructure_maintenance) {
666 Station *st;
667 FOR_ALL_STATIONS(st) {
668 cur_company.Change(st->owner);
669 CommandCost cost(EXPENSES_PROPERTY, _price[PR_STATION_VALUE] >> 1);
670 SubtractMoneyFromCompany(cost);
671 }
672 } else {
673 /* Improved monthly infrastructure costs. */
674 FOR_ALL_COMPANIES(c) {
675 cur_company.Change(c->index);
676
677 CommandCost cost(EXPENSES_PROPERTY);
678 uint32 rail_total = c->infrastructure.GetRailTotal();
679 for (RailType rt = RAILTYPE_BEGIN; rt < RAILTYPE_END; rt++) {
680 if (c->infrastructure.rail[rt] != 0) cost.AddCost(RailMaintenanceCost(rt, c->infrastructure.rail[rt], rail_total));
681 }
682 cost.AddCost(SignalMaintenanceCost(c->infrastructure.signal));
683 for (RoadType rt = ROADTYPE_BEGIN; rt < ROADTYPE_END; rt++) {
684 if (c->infrastructure.road[rt] != 0) cost.AddCost(RoadMaintenanceCost(rt, c->infrastructure.road[rt]));
685 }
686 cost.AddCost(CanalMaintenanceCost(c->infrastructure.water));
687 cost.AddCost(StationMaintenanceCost(c->infrastructure.station));
688 cost.AddCost(AirportMaintenanceCost(c->index));
689
690 SubtractMoneyFromCompany(cost);
691 }
692 }
693 cur_company.Restore();
694
695 /* Only run the economic statics and update company stats every 3rd month (1st of quarter). */
696 if (!HasBit(1 << 0 | 1 << 3 | 1 << 6 | 1 << 9, _cur_month)) return;
697
698 FOR_ALL_COMPANIES(c) {
699 memmove(&c->old_economy[1], &c->old_economy[0], sizeof(c->old_economy) - sizeof(c->old_economy[0]));
700 c->old_economy[0] = c->cur_economy;
701 memset(&c->cur_economy, 0, sizeof(c->cur_economy));
702
703 if (c->num_valid_stat_ent != MAX_HISTORY_QUARTERS) c->num_valid_stat_ent++;
704
705 UpdateCompanyRatingAndValue(c, true);
706 if (c->block_preview != 0) c->block_preview--;
707 }
708
709 SetWindowDirty(WC_INCOME_GRAPH, 0);
710 SetWindowDirty(WC_OPERATING_PROFIT, 0);
711 SetWindowDirty(WC_DELIVERED_CARGO, 0);
712 SetWindowDirty(WC_PERFORMANCE_HISTORY, 0);
713 SetWindowDirty(WC_COMPANY_VALUE, 0);
714 SetWindowDirty(WC_COMPANY_LEAGUE, 0);
715 }
716
722 bool AddInflation(bool check_year)
723 {
724 /* The cargo payment inflation differs from the normal inflation, so the
725 * relative amount of money you make with a transport decreases slowly over
726 * the 170 years. After a few hundred years we reach a level in which the
727 * games will become unplayable as the maximum income will be less than
728 * the minimum running cost.
729 *
730 * Furthermore there are a lot of inflation related overflows all over the
731 * place. Solving them is hardly possible because inflation will always
732 * reach the overflow threshold some day. So we'll just perform the
733 * inflation mechanism during the first 170 years (the amount of years that
734 * one had in the original TTD) and stop doing the inflation after that
735 * because it only causes problems that can't be solved nicely and the
736 * inflation doesn't add anything after that either; it even makes playing
737 * it impossible due to the diverging cost and income rates.
738 */
739 if (check_year && (_cur_year - _settings_game.game_creation.starting_year) >= (ORIGINAL_MAX_YEAR - ORIGINAL_BASE_YEAR)) return true;
740
741 if (_economy.inflation_prices == MAX_INFLATION || _economy.inflation_payment == MAX_INFLATION) return true;
742
743 /* Approximation for (100 + infl_amount)% ** (1 / 12) - 100%
744 * scaled by 65536
745 * 12 -> months per year
746 * This is only a good approximation for small values
747 */
748 _economy.inflation_prices += (_economy.inflation_prices * _economy.infl_amount * 54) >> 16;
749 _economy.inflation_payment += (_economy.inflation_payment * _economy.infl_amount_pr * 54) >> 16;
750
751 if (_economy.inflation_prices > MAX_INFLATION) _economy.inflation_prices = MAX_INFLATION;
752 if (_economy.inflation_payment > MAX_INFLATION) _economy.inflation_payment = MAX_INFLATION;
753
754 return false;
755 }
756
760 void RecomputePrices()
761 {
762 /* Setup maximum loan */
763 _economy.max_loan = (_settings_game.difficulty.max_loan * _economy.inflation_prices >> 16) / 50000 * 50000;
764
765 /* Setup price bases */
766 for (Price i = PR_BEGIN; i < PR_END; i++) {
767 Money price = _price_base_specs[i].start_price;
768
769 /* Apply difficulty settings */
770 uint mod = 1;
771 switch (_price_base_specs[i].category) {
772 case PCAT_RUNNING:
773 mod = _settings_game.difficulty.vehicle_costs;
774 break;
775
776 case PCAT_CONSTRUCTION:
777 mod = _settings_game.difficulty.construction_cost;
778 break;
779
780 default: break;
781 }
782 switch (mod) {
783 case 0: price *= 6; break;
784 case 1: price *= 8; break; // normalised to 1 below
785 case 2: price *= 9; break;
786 default: NOT_REACHED();
787 }
788
789 /* Apply inflation */
790 price = (int64)price * _economy.inflation_prices;
791
792 /* Apply newgrf modifiers, remove fractional part of inflation, and normalise on medium difficulty. */
793 int shift = _price_base_multiplier[i] - 16 - 3;
794 if (shift >= 0) {
795 price <<= shift;
796 } else {
797 price >>= -shift;
798 }
799
800 /* Make sure the price does not get reduced to zero.
801 * Zero breaks quite a few commands that use a zero
802 * cost to see whether something got changed or not
803 * and based on that cause an error. When the price
804 * is zero that fails even when things are done. */
805 if (price == 0) {
806 price = Clamp(_price_base_specs[i].start_price, -1, 1);
807 /* No base price should be zero, but be sure. */
808 assert(price != 0);
809 }
810 /* Store value */
811 _price[i] = price;
812 }
813
814 /* Setup cargo payment */
815 CargoSpec *cs;
816 FOR_ALL_CARGOSPECS(cs) {
817 cs->current_payment = ((int64)cs->initial_payment * _economy.inflation_payment) >> 16;
818 }
819
820 SetWindowClassesDirty(WC_BUILD_VEHICLE);
821 SetWindowClassesDirty(WC_REPLACE_VEHICLE);
822 SetWindowClassesDirty(WC_VEHICLE_DETAILS);
823 SetWindowClassesDirty(WC_COMPANY_INFRASTRUCTURE);
824 InvalidateWindowData(WC_PAYMENT_RATES, 0);
825 }
826
828 static void CompaniesPayInterest()
829 {
830 const Company *c;
831
832 Backup<CompanyByte> cur_company(_current_company, FILE_LINE);
833 FOR_ALL_COMPANIES(c) {
834 cur_company.Change(c->index);
835
836 /* Over a year the paid interest should be "loan * interest percentage",
837 * but... as that number is likely not dividable by 12 (pay each month),
838 * one needs to account for that in the monthly fee calculations.
839 * To easily calculate what one should pay "this" month, you calculate
840 * what (total) should have been paid up to this month and you subtract
841 * whatever has been paid in the previous months. This will mean one month
842 * it'll be a bit more and the other it'll be a bit less than the average
843 * monthly fee, but on average it will be exact.
844 * In order to prevent cheating or abuse (just not paying interest by not
845 * taking a loan we make companies pay interest on negative cash as well
846 */
847 Money yearly_fee = c->current_loan * _economy.interest_rate / 100;
848 if (c->money < 0) {
849 yearly_fee += -c->money *_economy.interest_rate / 100;
850 }
851 Money up_to_previous_month = yearly_fee * _cur_month / 12;
852 Money up_to_this_month = yearly_fee * (_cur_month + 1) / 12;
853
854 SubtractMoneyFromCompany(CommandCost(EXPENSES_LOAN_INT, up_to_this_month - up_to_previous_month));
855
856 SubtractMoneyFromCompany(CommandCost(EXPENSES_OTHER, _price[PR_STATION_VALUE] >> 2));
857 }
858 cur_company.Restore();
859 }
860
861 static void HandleEconomyFluctuations()
862 {
863 if (_settings_game.difficulty.economy != 0) {
864 /* When economy is Fluctuating, decrease counter */
865 _economy.fluct--;
866 } else if (EconomyIsInRecession()) {
867 /* When it's Steady and we are in recession, end it now */
868 _economy.fluct = -12;
869 } else {
870 /* No need to do anything else in other cases */
871 return;
872 }
873
874 if (_economy.fluct == 0) {
875 _economy.fluct = -(int)GB(Random(), 0, 2);
876 AddNewsItem(STR_NEWS_BEGIN_OF_RECESSION, NT_ECONOMY, NF_NORMAL);
877 } else if (_economy.fluct == -12) {
878 _economy.fluct = GB(Random(), 0, 8) + 312;
879 AddNewsItem(STR_NEWS_END_OF_RECESSION, NT_ECONOMY, NF_NORMAL);
880 }
881 }
882
883
887 void ResetPriceBaseMultipliers()
888 {
889 memset(_price_base_multiplier, 0, sizeof(_price_base_multiplier));
890 }
891
899 void SetPriceBaseMultiplier(Price price, int factor)
900 {
901 assert(price < PR_END);
902 _price_base_multiplier[price] = Clamp(factor, MIN_PRICE_MODIFIER, MAX_PRICE_MODIFIER);
903 }
904
909 void StartupIndustryDailyChanges(bool init_counter)
910 {
911 uint map_size = MapLogX() + MapLogY();
912 /* After getting map size, it needs to be scaled appropriately and divided by 31,
913 * which stands for the days in a month.
914 * Using just 31 will make it so that a monthly reset (based on the real number of days of that month)
915 * would not be needed.
916 * Since it is based on "fractional parts", the leftover days will not make much of a difference
917 * on the overall total number of changes performed */
918 _economy.industry_daily_increment = (1 << map_size) / 31;
919
920 if (init_counter) {
921 /* A new game or a savegame from an older version will require the counter to be initialized */
922 _economy.industry_daily_change_counter = 0;
923 }
924 }
925
926 void StartupEconomy()
927 {
928 _economy.interest_rate = _settings_game.difficulty.initial_interest;
929 _economy.infl_amount = _settings_game.difficulty.initial_interest;
930 _economy.infl_amount_pr = max(0, _settings_game.difficulty.initial_interest - 1);
931 _economy.fluct = GB(Random(), 0, 8) + 168;
932
933 /* Set up prices */
934 RecomputePrices();
935
936 StartupIndustryDailyChanges(true); // As we are starting a new game, initialize the counter too
937
938 }
939
943 void InitializeEconomy()
944 {
945 _economy.inflation_prices = _economy.inflation_payment = 1 << 16;
946 ClearCargoPickupMonitoring();
947 ClearCargoDeliveryMonitoring();
948 }
949
958 Money GetPrice(Price index, uint cost_factor, const GRFFile *grf_file, int shift)
959 {
960 if (index >= PR_END) return 0;
961
962 Money cost = _price[index] * cost_factor;
963 if (grf_file != NULL) shift += grf_file->price_base_multipliers[index];
964
965 if (shift >= 0) {
966 cost <<= shift;
967 } else {
968 cost >>= -shift;
969 }
970
971 return cost;
972 }
973
974 Money GetTransportedGoodsIncome(uint num_pieces, uint dist, byte transit_days, CargoID cargo_type)
975 {
976 const CargoSpec *cs = CargoSpec::Get(cargo_type);
977 if (!cs->IsValid()) {
978 /* User changed newgrfs and some vehicle still carries some cargo which is no longer available. */
979 return 0;
980 }
981
982 /* Use callback to calculate cargo profit, if available */
983 if (HasBit(cs->callback_mask, CBM_CARGO_PROFIT_CALC)) {
984 uint32 var18 = min(dist, 0xFFFF) | (min(num_pieces, 0xFF) << 16) | (transit_days << 24);
985 uint16 callback = GetCargoCallback(CBID_CARGO_PROFIT_CALC, 0, var18, cs);
986 if (callback != CALLBACK_FAILED) {
987 int result = GB(callback, 0, 14);
988
989 /* Simulate a 15 bit signed value */
990 if (HasBit(callback, 14)) result -= 0x4000;
991
992 /* "The result should be a signed multiplier that gets multiplied
993 * by the amount of cargo moved and the price factor, then gets
994 * divided by 8192." */
995 return result * num_pieces * cs->current_payment / 8192;
996 }
997 }
998
999 static const int MIN_TIME_FACTOR = 31;
1000 static const int MAX_TIME_FACTOR = 255;
1001
1002 const int days1 = cs->transit_days[0];
1003 const int days2 = cs->transit_days[1];
1004 const int days_over_days1 = max( transit_days - days1, 0);
1005 const int days_over_days2 = max(days_over_days1 - days2, 0);
1006
1007 /*
1008 * The time factor is calculated based on the time it took
1009 * (transit_days) compared two cargo-depending values. The
1010 * range is divided into three parts:
1011 *
1012 * - constant for fast transits
1013 * - linear decreasing with time with a slope of -1 for medium transports
1014 * - linear decreasing with time with a slope of -2 for slow transports
1015 *
1016 */
1017 const int time_factor = max(MAX_TIME_FACTOR - days_over_days1 - days_over_days2, MIN_TIME_FACTOR);
1018
1019 return BigMulS(dist * time_factor * num_pieces, cs->current_payment, 21);
1020 }
1021
1023 static SmallIndustryList _cargo_delivery_destinations;
1024
1034 static uint DeliverGoodsToIndustry(const Station *st, CargoID cargo_type, uint num_pieces, IndustryID source)
1035 {
1036 /* Find the nearest industrytile to the station sign inside the catchment area, whose industry accepts the cargo.
1037 * This fails in three cases:
1038 * 1) The station accepts the cargo because there are enough houses around it accepting the cargo.
1039 * 2) The industries in the catchment area temporarily reject the cargo, and the daily station loop has not yet updated station acceptance.
1040 * 3) The results of callbacks CBID_INDUSTRY_REFUSE_CARGO and CBID_INDTILE_CARGO_ACCEPTANCE are inconsistent. (documented behaviour)
1041 */
1042
1043 uint accepted = 0;
1044
1045 for (uint i = 0; i < st->industries_near.Length() && num_pieces != 0; i++) {
1046 Industry *ind = st->industries_near[i];
1047 if (ind->index == source) continue;
1048
1049 uint cargo_index;
1050 for (cargo_index = 0; cargo_index < lengthof(ind->accepts_cargo); cargo_index++) {
1051 if (cargo_type == ind->accepts_cargo[cargo_index]) break;
1052 }
1053 /* Check if matching cargo has been found */
1054 if (cargo_index >= lengthof(ind->accepts_cargo)) continue;
1055
1056 /* Check if industry temporarily refuses acceptance */
1057 if (IndustryTemporarilyRefusesCargo(ind, cargo_type)) continue;
1058
1059 /* Insert the industry into _cargo_delivery_destinations, if not yet contained */
1060 _cargo_delivery_destinations.Include(ind);
1061
1062 uint amount = min(num_pieces, 0xFFFFU - ind->incoming_cargo_waiting[cargo_index]);
1063 ind->incoming_cargo_waiting[cargo_index] += amount;
1064 num_pieces -= amount;
1065 accepted += amount;
1066 }
1067
1068 return accepted;
1069 }
1070
1084 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)
1085 {
1086 assert(num_pieces > 0);
1087
1088 Station *st = Station::Get(dest);
1089
1090 /* Give the goods to the industry. */
1091 uint accepted = DeliverGoodsToIndustry(st, cargo_type, num_pieces, src_type == ST_INDUSTRY ? src : INVALID_INDUSTRY);
1092
1093 /* If this cargo type is always accepted, accept all */
1094 if (HasBit(st->always_accepted, cargo_type)) accepted = num_pieces;
1095
1096 /* Update station statistics */
1097 if (accepted > 0) {
1098 SetBit(st->goods[cargo_type].status, GoodsEntry::GES_EVER_ACCEPTED);
1099 SetBit(st->goods[cargo_type].status, GoodsEntry::GES_CURRENT_MONTH);
1100 SetBit(st->goods[cargo_type].status, GoodsEntry::GES_ACCEPTED_BIGTICK);
1101 }
1102
1103 /* Update company statistics */
1104 company->cur_economy.delivered_cargo[cargo_type] += accepted;
1105
1106 /* Increase town's counter for town effects */
1107 const CargoSpec *cs = CargoSpec::Get(cargo_type);
1108 st->town->received[cs->town_effect].new_act += accepted;
1109
1110 /* Determine profit */
1111 Money profit = GetTransportedGoodsIncome(accepted, DistanceManhattan(source_tile, st->xy), days_in_transit, cargo_type);
1112
1113 /* Update the cargo monitor. */
1114 AddCargoDelivery(cargo_type, company->index, accepted, src_type, src, st);
1115
1116 /* Modify profit if a subsidy is in effect */
1117 if (CheckSubsidised(cargo_type, company->index, src_type, src, st)) {
1118 switch (_settings_game.difficulty.subsidy_multiplier) {
1119 case 0: profit += profit >> 1; break;
1120 case 1: profit *= 2; break;
1121 case 2: profit *= 3; break;
1122 default: profit *= 4; break;
1123 }
1124 }
1125
1126 return profit;
1127 }
1128
1134 static void TriggerIndustryProduction(Industry *i)
1135 {
1136 const IndustrySpec *indspec = GetIndustrySpec(i->type);
1137 uint16 callback = indspec->callback_mask;
1138
1139 i->was_cargo_delivered = true;
1140 i->last_cargo_accepted_at = _date;
1141
1142 if (HasBit(callback, CBM_IND_PRODUCTION_CARGO_ARRIVAL) || HasBit(callback, CBM_IND_PRODUCTION_256_TICKS)) {
1143 if (HasBit(callback, CBM_IND_PRODUCTION_CARGO_ARRIVAL)) {
1144 IndustryProductionCallback(i, 0);
1145 } else {
1146 SetWindowDirty(WC_INDUSTRY_VIEW, i->index);
1147 }
1148 } else {
1149 for (uint cargo_index = 0; cargo_index < lengthof(i->incoming_cargo_waiting); cargo_index++) {
1150 uint cargo_waiting = i->incoming_cargo_waiting[cargo_index];
1151 if (cargo_waiting == 0) continue;
1152
1153 i->produced_cargo_waiting[0] = min(i->produced_cargo_waiting[0] + (cargo_waiting * indspec->input_cargo_multiplier[cargo_index][0] / 256), 0xFFFF);
1154 i->produced_cargo_waiting[1] = min(i->produced_cargo_waiting[1] + (cargo_waiting * indspec->input_cargo_multiplier[cargo_index][1] / 256), 0xFFFF);
1155
1156 i->incoming_cargo_waiting[cargo_index] = 0;
1157 }
1158 }
1159
1160 TriggerIndustry(i, INDUSTRY_TRIGGER_RECEIVED_CARGO);
1161 StartStopIndustryTileAnimation(i, IAT_INDUSTRY_RECEIVED_CARGO);
1162 }
1163
1168 CargoPayment::CargoPayment(Vehicle *front) :
1169 front(front),
1170 current_station(front->last_station_visited)
1171 {
1172 }
1173
1174 CargoPayment::~CargoPayment()
1175 {
1176 if (this->CleaningPool()) return;
1177
1178 this->front->cargo_payment = NULL;
1179
1180 if (this->visual_profit == 0 && this->visual_transfer == 0) return;
1181
1182 Backup<CompanyByte> cur_company(_current_company, this->front->owner, FILE_LINE);
1183
1184 SubtractMoneyFromCompany(CommandCost(this->front->GetExpenseType(true), -this->route_profit));
1185 this->front->profit_this_year += (this->visual_profit + this->visual_transfer) << 8;
1186
1187 if (this->route_profit != 0 && IsLocalCompany() && !PlayVehicleSound(this->front, VSE_LOAD_UNLOAD)) {
1188 SndPlayVehicleFx(SND_14_CASHTILL, this->front);
1189 }
1190
1191 if (this->visual_transfer != 0) {
1192 ShowFeederIncomeAnimation(this->front->x_pos, this->front->y_pos,
1193 this->front->z_pos, this->visual_transfer, -this->visual_profit);
1194 } else if (this->visual_profit != 0) {
1195 ShowCostOrIncomeAnimation(this->front->x_pos, this->front->y_pos,
1196 this->front->z_pos, -this->visual_profit);
1197 }
1198
1199 cur_company.Restore();
1200 }
1201
1207 void CargoPayment::PayFinalDelivery(const CargoPacket *cp, uint count)
1208 {
1209 if (this->owner == NULL) {
1210 this->owner = Company::Get(this->front->owner);
1211 }
1212
1213 /* Handle end of route payment */
1214 Money profit = DeliverGoods(count, this->ct, this->current_station, cp->SourceStationXY(), cp->DaysInTransit(), this->owner, cp->SourceSubsidyType(), cp->SourceSubsidyID());
1215 this->route_profit += profit;
1216
1217 /* The vehicle's profit is whatever route profit there is minus feeder shares. */
1218 this->visual_profit += profit - cp->FeederShare(count);
1219 }
1220
1227 Money CargoPayment::PayTransfer(const CargoPacket *cp, uint count)
1228 {
1229 Money profit = GetTransportedGoodsIncome(
1230 count,
1231 /* pay transfer vehicle for only the part of transfer it has done: ie. cargo_loaded_at_xy to here */
1232 DistanceManhattan(cp->LoadedAtXY(), Station::Get(this->current_station)->xy),
1233 cp->DaysInTransit(),
1234 this->ct);
1235
1236 profit = profit * _settings_game.economy.feeder_payment_share / 100;
1237
1238 this->visual_transfer += profit; // accumulate transfer profits for whole vehicle
1239 return profit; // account for the (virtual) profit already made for the cargo packet
1240 }
1241
1247 void PrepareUnload(Vehicle *front_v)
1248 {
1249 Station *curr_station = Station::Get(front_v->last_station_visited);
1250 curr_station->loading_vehicles.push_back(front_v);
1251
1252 /* At this moment loading cannot be finished */
1253 ClrBit(front_v->vehicle_flags, VF_LOADING_FINISHED);
1254
1255 /* Start unloading at the first possible moment */
1256 front_v->load_unload_ticks = 1;
1257
1258 assert(front_v->cargo_payment == NULL);
1259 /* One CargoPayment per vehicle and the vehicle limit equals the
1260 * limit in number of CargoPayments. Can't go wrong. */
1261 assert_compile(CargoPaymentPool::MAX_SIZE == VehiclePool::MAX_SIZE);
1262 assert(CargoPayment::CanAllocateItem());
1263 front_v->cargo_payment = new CargoPayment(front_v);
1264
1265 StationIDStack next_station = front_v->GetNextStoppingStation();
1266 if (front_v->orders.list == NULL || (front_v->current_order.GetUnloadType() & OUFB_NO_UNLOAD) == 0) {
1267 Station *st = Station::Get(front_v->last_station_visited);
1268 for (Vehicle *v = front_v; v != NULL; v = v->Next()) {
1269 const GoodsEntry *ge = &st->goods[v->cargo_type];
1270 if (v->cargo_cap > 0 && v->cargo.TotalCount() > 0) {
1271 v->cargo.Stage(
1272 HasBit(ge->status, GoodsEntry::GES_ACCEPTANCE),
1273 front_v->last_station_visited, next_station,
1274 front_v->current_order.GetUnloadType(), ge,
1275 front_v->cargo_payment);
1276 if (v->cargo.UnloadCount() > 0) SetBit(v->vehicle_flags, VF_CARGO_UNLOADING);
1277 }
1278 }
1279 }
1280 }
1281
1288 static uint GetLoadAmount(Vehicle *v)
1289 {
1290 const Engine *e = v->GetEngine();
1291 uint load_amount = e->info.load_amount;
1292
1293 /* The default loadamount for mail is 1/4 of the load amount for passengers */
1294 bool air_mail = v->type == VEH_AIRCRAFT && !Aircraft::From(v)->IsNormalAircraft();
1295 if (air_mail) load_amount = CeilDiv(load_amount, 4);
1296
1297 if (_settings_game.order.gradual_loading) {
1298 uint16 cb_load_amount = CALLBACK_FAILED;
1299 if (e->GetGRF() != NULL && e->GetGRF()->grf_version >= 8) {
1300 /* Use callback 36 */
1301 cb_load_amount = GetVehicleProperty(v, PROP_VEHICLE_LOAD_AMOUNT, CALLBACK_FAILED);
1302 } else if (HasBit(e->info.callback_mask, CBM_VEHICLE_LOAD_AMOUNT)) {
1303 /* Use callback 12 */
1304 cb_load_amount = GetVehicleCallback(CBID_VEHICLE_LOAD_AMOUNT, 0, 0, v->engine_type, v);
1305 }
1306 if (cb_load_amount != CALLBACK_FAILED) {
1307 if (e->GetGRF()->grf_version < 8) cb_load_amount = GB(cb_load_amount, 0, 8);
1308 if (cb_load_amount >= 0x100) {
1309 ErrorUnknownCallbackResult(e->GetGRFID(), CBID_VEHICLE_LOAD_AMOUNT, cb_load_amount);
1310 } else if (cb_load_amount != 0) {
1311 load_amount = cb_load_amount;
1312 }
1313 }
1314 }
1315
1316 /* Scale load amount the same as capacity */
1317 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);
1318
1319 /* Zero load amount breaks a lot of things. */
1320 return max(1u, load_amount);
1321 }
1322
1332 template<class Taction>
1333 bool IterateVehicleParts(Vehicle *v, Taction action)
1334 {
1335 for (Vehicle *w = v; w != NULL;
1336 w = w->HasArticulatedPart() ? w->GetNextArticulatedPart() : NULL) {
1337 if (!action(w)) return false;
1338 if (w->type == VEH_TRAIN) {
1339 Train *train = Train::From(w);
1340 if (train->IsMultiheaded() && !action(train->other_multiheaded_part)) return false;
1341 }
1342 }
1343 if (v->type == VEH_AIRCRAFT && Aircraft::From(v)->IsNormalAircraft()) return action(v->Next());
1344 return true;
1345 }
1346
1350 struct IsEmptyAction
1351 {
1357 bool operator()(const Vehicle *v)
1358 {
1359 return v->cargo.StoredCount() == 0;
1360 }
1361 };
1362
1366 struct PrepareRefitAction
1367 {
1368 CargoArray &consist_capleft;
1369 uint32 &refit_mask;
1370
1376 PrepareRefitAction(CargoArray &consist_capleft, uint32 &refit_mask) :
1377 consist_capleft(consist_capleft), refit_mask(refit_mask) {}
1378
1385 bool operator()(const Vehicle *v)
1386 {
1387 this->consist_capleft[v->cargo_type] -= v->cargo_cap - v->cargo.ReservedCount();
1388 this->refit_mask |= EngInfo(v->engine_type)->refit_mask;
1389 return true;
1390 }
1391 };
1392
1396 struct ReturnCargoAction
1397 {
1398 Station *st;
1399 StationID next_hop;
1400
1406 ReturnCargoAction(Station *st, StationID next_one) : st(st), next_hop(next_one) {}
1407
1413 bool operator()(Vehicle *v)
1414 {
1415 v->cargo.Return(UINT_MAX, &this->st->goods[v->cargo_type].cargo, this->next_hop);
1416 return true;
1417 }
1418 };
1419
1423 struct FinalizeRefitAction
1424 {
1425 CargoArray &consist_capleft;
1426 Station *st;
1427 StationIDStack &next_station;
1428 bool do_reserve;
1429
1437 FinalizeRefitAction(CargoArray &consist_capleft, Station *st, StationIDStack &next_station, bool do_reserve) :
1438 consist_capleft(consist_capleft), st(st), next_station(next_station), do_reserve(do_reserve) {}
1439
1446 bool operator()(Vehicle *v)
1447 {
1448 if (this->do_reserve) {
1449 this->st->goods[v->cargo_type].cargo.Reserve(v->cargo_cap - v->cargo.RemainingCount(),
1450 &v->cargo, st->xy, this->next_station);
1451 }
1452 this->consist_capleft[v->cargo_type] += v->cargo_cap - v->cargo.RemainingCount();
1453 return true;
1454 }
1455 };
1456
1465 static void HandleStationRefit(Vehicle *v, CargoArray &consist_capleft, Station *st, StationIDStack next_station, CargoID new_cid)
1466 {
1467 Vehicle *v_start = v->GetFirstEnginePart();
1468 if (!IterateVehicleParts(v_start, IsEmptyAction())) return;
1469
1470 Backup<CompanyByte> cur_company(_current_company, v->owner, FILE_LINE);
1471
1472 uint32 refit_mask = v->GetEngine()->info.refit_mask;
1473
1474 /* Remove old capacity from consist capacity and collect refit mask. */
1475 IterateVehicleParts(v_start, PrepareRefitAction(consist_capleft, refit_mask));
1476
1477 bool is_auto_refit = new_cid == CT_AUTO_REFIT;
1478 if (is_auto_refit) {
1479 /* Get a refittable cargo type with waiting cargo for next_station or INVALID_STATION. */
1480 CargoID cid;
1481 new_cid = v_start->cargo_type;
1482 FOR_EACH_SET_CARGO_ID(cid, refit_mask) {
1483 if (st->goods[cid].cargo.HasCargoFor(next_station)) {
1484 /* Try to find out if auto-refitting would succeed. In case the refit is allowed,
1485 * the returned refit capacity will be greater than zero. */
1486 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.
1487 /* Try to balance different loadable cargoes between parts of the consist, so that
1488 * all of them can be loaded. Avoid a situation where all vehicles suddenly switch
1489 * to the first loadable cargo for which there is only one packet. If the capacities
1490 * are equal refit to the cargo of which most is available. This is important for
1491 * consists of only a single vehicle as those will generally have a consist_capleft
1492 * of 0 for all cargoes. */
1493 if (_returned_refit_capacity > 0 && (consist_capleft[cid] < consist_capleft[new_cid] ||
1494 (consist_capleft[cid] == consist_capleft[new_cid] &&
1495 st->goods[cid].cargo.AvailableCount() > st->goods[new_cid].cargo.AvailableCount()))) {
1496 new_cid = cid;
1497 }
1498 }
1499 }
1500 }
1501
1502 /* Refit if given a valid cargo. */
1503 if (new_cid < NUM_CARGO && new_cid != v_start->cargo_type) {
1504 /* INVALID_STATION because in the DT_MANUAL case that's correct and in the DT_(A)SYMMETRIC
1505 * cases the next hop of the vehicle doesn't really tell us anything if the cargo had been
1506 * "via any station" before reserving. We rather produce some more "any station" cargo than
1507 * misrouting it. */
1508 IterateVehicleParts(v_start, ReturnCargoAction(st, INVALID_STATION));
1509 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.
1510 if (cost.Succeeded()) v->First()->profit_this_year -= cost.GetCost() << 8;
1511 }
1512
1513 /* Add new capacity to consist capacity and reserve cargo */
1514 IterateVehicleParts(v_start, FinalizeRefitAction(consist_capleft, st, next_station,
1515 is_auto_refit || (v->First()->current_order.GetLoadType() & OLFB_FULL_LOAD) != 0));
1516
1517 cur_company.Restore();
1518 }
1519
1520 struct ReserveCargoAction {
1521 Station *st;
1522 StationIDStack *next_station;
1523
1524 ReserveCargoAction(Station *st, StationIDStack *next_station) :
1525 st(st), next_station(next_station) {}
1526
1527 bool operator()(Vehicle *v)
1528 {
1529 if (v->cargo_cap > v->cargo.RemainingCount()) {
1530 st->goods[v->cargo_type].cargo.Reserve(v->cargo_cap - v->cargo.RemainingCount(),
1531 &v->cargo, st->xy, *next_station);
1532 }
1533
1534 return true;
1535 }
1536
1537 };
1538
1547 static void ReserveConsist(Station *st, Vehicle *u, CargoArray *consist_capleft, StationIDStack *next_station)
1548 {
1549 /* If there is a cargo payment not all vehicles of the consist have tried to do the refit.
1550 * In that case, only reserve if it's a fixed refit and the equivalent of "articulated chain"
1551 * a vehicle belongs to already has the right cargo. */
1552 bool must_reserve = !u->current_order.IsRefit() || u->cargo_payment == NULL;
1553 for (Vehicle *v = u; v != NULL; v = v->Next()) {
1554 assert(v->cargo_cap >= v->cargo.RemainingCount());
1555
1556 /* Exclude various ways in which the vehicle might not be the head of an equivalent of
1557 * "articulated chain". Also don't do the reservation if the vehicle is going to refit
1558 * to a different cargo and hasn't tried to do so, yet. */
1559 if (!v->IsArticulatedPart() &&
1560 (v->type != VEH_TRAIN || !Train::From(v)->IsRearDualheaded()) &&
1561 (v->type != VEH_AIRCRAFT || Aircraft::From(v)->IsNormalAircraft()) &&
1562 (must_reserve || u->current_order.GetRefitCargo() == v->cargo_type)) {
1563 IterateVehicleParts(v, ReserveCargoAction(st, next_station));
1564 }
1565 if (consist_capleft == NULL || v->cargo_cap == 0) continue;
1566 (*consist_capleft)[v->cargo_type] += v->cargo_cap - v->cargo.RemainingCount();
1567 }
1568 }
1569
1577 static void UpdateLoadUnloadTicks(Vehicle *front, const Station *st, int ticks)
1578 {
1579 if (front->type == VEH_TRAIN) {
1580 /* Each platform tile is worth 2 rail vehicles. */
1581 int overhang = front->GetGroundVehicleCache()->cached_total_length - st->GetPlatformLength(front->tile) * TILE_SIZE;
1582 if (overhang > 0) {
1583 ticks <<= 1;
1584 ticks += (overhang * ticks) / 8;
1585 }
1586 }
1587 /* Always wait at least 1, otherwise we'll wait 'infinitively' long. */
1588 front->load_unload_ticks = max(1, ticks);
1589 }
1590
1595 static void LoadUnloadVehicle(Vehicle *front)
1596 {
1597 assert(front->current_order.IsType(OT_LOADING));
1598
1599 StationID last_visited = front->last_station_visited;
1600 Station *st = Station::Get(last_visited);
1601
1602 StationIDStack next_station = front->GetNextStoppingStation();
1603 bool use_autorefit = front->current_order.IsRefit() && front->current_order.GetRefitCargo() == CT_AUTO_REFIT;
1604 CargoArray consist_capleft;
1605 if (_settings_game.order.improved_load && use_autorefit ?
1606 front->cargo_payment == NULL : (front->current_order.GetLoadType() & OLFB_FULL_LOAD) != 0) {
1607 ReserveConsist(st, front,
1608 (use_autorefit && front->load_unload_ticks != 0) ? &consist_capleft : NULL,
1609 &next_station);
1610 }
1611
1612 /* We have not waited enough time till the next round of loading/unloading */
1613 if (front->load_unload_ticks != 0) return;
1614
1615 if (front->type == VEH_TRAIN && (!IsTileType(front->tile, MP_STATION) || GetStationIndex(front->tile) != st->index)) {
1616 /* The train reversed in the station. Take the "easy" way
1617 * out and let the train just leave as it always did. */
1618 SetBit(front->vehicle_flags, VF_LOADING_FINISHED);
1619 front->load_unload_ticks = 1;
1620 return;
1621 }
1622
1623 int new_load_unload_ticks = 0;
1624 bool dirty_vehicle = false;
1625 bool dirty_station = false;
1626
1627 bool completely_emptied = true;
1628 bool anything_unloaded = false;
1629 bool anything_loaded = false;
1630 uint32 full_load_amount = 0;
1631 uint32 cargo_not_full = 0;
1632 uint32 cargo_full = 0;
1633 uint32 reservation_left = 0;
1634
1635 front->cur_speed = 0;
1636
1637 CargoPayment *payment = front->cargo_payment;
1638
1639 uint artic_part = 0; // Articulated part we are currently trying to load. (not counting parts without capacity)
1640 for (Vehicle *v = front; v != NULL; v = v->Next()) {
1641 if (v == front || !v->Previous()->HasArticulatedPart()) artic_part = 0;
1642 if (v->cargo_cap == 0) continue;
1643 artic_part++;
1644
1645 GoodsEntry *ge = &st->goods[v->cargo_type];
1646
1647 if (HasBit(v->vehicle_flags, VF_CARGO_UNLOADING) && (front->current_order.GetUnloadType() & OUFB_NO_UNLOAD) == 0) {
1648 uint cargo_count = v->cargo.UnloadCount();
1649 uint amount_unloaded = _settings_game.order.gradual_loading ? min(cargo_count, GetLoadAmount(v)) : cargo_count;
1650 bool remaining = false; // Are there cargo entities in this vehicle that can still be unloaded here?
1651
1652 assert(payment != NULL);
1653 payment->SetCargo(v->cargo_type);
1654
1655 if (!HasBit(ge->status, GoodsEntry::GES_ACCEPTANCE) && v->cargo.ActionCount(VehicleCargoList::MTA_DELIVER) > 0) {
1656 /* The station does not accept our goods anymore. */
1657 if (front->current_order.GetUnloadType() & (OUFB_TRANSFER | OUFB_UNLOAD)) {
1658 /* Transfer instead of delivering. */
1659 v->cargo.Reassign<VehicleCargoList::MTA_DELIVER, VehicleCargoList::MTA_TRANSFER>(
1660 v->cargo.ActionCount(VehicleCargoList::MTA_DELIVER), INVALID_STATION);
1661 } else {
1662 uint new_remaining = v->cargo.RemainingCount() + v->cargo.ActionCount(VehicleCargoList::MTA_DELIVER);
1663 if (v->cargo_cap < new_remaining) {
1664 /* Return some of the reserved cargo to not overload the vehicle. */
1665 v->cargo.Return(new_remaining - v->cargo_cap, &ge->cargo, INVALID_STATION);
1666 }
1667
1668 /* Keep instead of delivering. This may lead to no cargo being unloaded, so ...*/
1669 v->cargo.Reassign<VehicleCargoList::MTA_DELIVER, VehicleCargoList::MTA_KEEP>(
1670 v->cargo.ActionCount(VehicleCargoList::MTA_DELIVER));
1671
1672 /* ... say we unloaded something, otherwise we'll think we didn't unload
1673 * something and we didn't load something, so we must be finished
1674 * at this station. Setting the unloaded means that we will get a
1675 * retry for loading in the next cycle. */
1676 anything_unloaded = true;
1677 }
1678 }
1679
1680 if (v->cargo.ActionCount(VehicleCargoList::MTA_TRANSFER) > 0) {
1681 /* Mark the station dirty if we transfer, but not if we only deliver. */
1682 dirty_station = true;
1683
1684 if (!ge->HasRating()) {
1685 /* Upon transfering cargo, make sure the station has a rating. Fake a pickup for the
1686 * first unload to prevent the cargo from quickly decaying after the initial drop. */
1687 ge->time_since_pickup = 0;
1688 SetBit(ge->status, GoodsEntry::GES_RATING);
1689 }
1690 }
1691
1692 amount_unloaded = v->cargo.Unload(amount_unloaded, &ge->cargo, payment);
1693 remaining = v->cargo.UnloadCount() > 0;
1694 if (amount_unloaded > 0) {
1695 dirty_vehicle = true;
1696 anything_unloaded = true;
1697 new_load_unload_ticks += amount_unloaded;
1698
1699 /* Deliver goods to the station */
1700 st->time_since_unload = 0;
1701 }
1702
1703 if (_settings_game.order.gradual_loading && remaining) {
1704 completely_emptied = false;
1705 } else {
1706 /* We have finished unloading (cargo count == 0) */
1707 ClrBit(v->vehicle_flags, VF_CARGO_UNLOADING);
1708 }
1709
1710 continue;
1711 }
1712
1713 /* Do not pick up goods when we have no-load set or loading is stopped. */
1714 if (front->current_order.GetLoadType() & OLFB_NO_LOAD || HasBit(front->vehicle_flags, VF_STOP_LOADING)) continue;
1715
1716 /* This order has a refit, if this is the first vehicle part carrying cargo and the whole vehicle is empty, try refitting. */
1717 if (front->current_order.IsRefit() && artic_part == 1) {
1718 HandleStationRefit(v, consist_capleft, st, next_station, front->current_order.GetRefitCargo());
1719 ge = &st->goods[v->cargo_type];
1720 }
1721
1722 /* As we're loading here the following link can carry the full capacity of the vehicle. */
1723 v->refit_cap = v->cargo_cap;
1724
1725 /* update stats */
1726 int t;
1727 switch (front->type) {
1728 case VEH_TRAIN:
1729 case VEH_SHIP:
1730 t = front->vcache.cached_max_speed;
1731 break;
1732
1733 case VEH_ROAD:
1734 t = front->vcache.cached_max_speed / 2;
1735 break;
1736
1737 case VEH_AIRCRAFT:
1738 t = Aircraft::From(front)->GetSpeedOldUnits(); // Convert to old units.
1739 break;
1740
1741 default: NOT_REACHED();
1742 }
1743
1744 /* if last speed is 0, we treat that as if no vehicle has ever visited the station. */
1745 ge->last_speed = min(t, 255);
1746 ge->last_age = min(_cur_year - front->build_year, 255);
1747 ge->time_since_pickup = 0;
1748
1749 assert(v->cargo_cap >= v->cargo.StoredCount());
1750 /* If there's goods waiting at the station, and the vehicle
1751 * has capacity for it, load it on the vehicle. */
1752 uint cap_left = v->cargo_cap - v->cargo.StoredCount();
1753 if (cap_left > 0 && (v->cargo.ActionCount(VehicleCargoList::MTA_LOAD) > 0 || ge->cargo.AvailableCount() > 0)) {
1754 if (v->cargo.StoredCount() == 0) TriggerVehicle(v, VEHICLE_TRIGGER_NEW_CARGO);
1755 if (_settings_game.order.gradual_loading) cap_left = min(cap_left, GetLoadAmount(v));
1756
1757 uint loaded = ge->cargo.Load(cap_left, &v->cargo, st->xy, next_station);
1758 if (v->cargo.ActionCount(VehicleCargoList::MTA_LOAD) > 0) {
1759 /* Remember if there are reservations left so that we don't stop
1760 * loading before they're loaded. */
1761 SetBit(reservation_left, v->cargo_type);
1762 }
1763
1764 /* Store whether the maximum possible load amount was loaded or not.*/
1765 if (loaded == cap_left) {
1766 SetBit(full_load_amount, v->cargo_type);
1767 } else {
1768 ClrBit(full_load_amount, v->cargo_type);
1769 }
1770
1771 /* TODO: Regarding this, when we do gradual loading, we
1772 * should first unload all vehicles and then start
1773 * loading them. Since this will cause
1774 * VEHICLE_TRIGGER_EMPTY to be called at the time when
1775 * the whole vehicle chain is really totally empty, the
1776 * completely_emptied assignment can then be safely
1777 * removed; that's how TTDPatch behaves too. --pasky */
1778 if (loaded > 0) {
1779 completely_emptied = false;
1780 anything_loaded = true;
1781
1782 st->time_since_load = 0;
1783 st->last_vehicle_type = v->type;
1784
1785 if (ge->cargo.TotalCount() == 0) {
1786 TriggerStationRandomisation(st, st->xy, SRT_CARGO_TAKEN, v->cargo_type);
1787 TriggerStationAnimation(st, st->xy, SAT_CARGO_TAKEN, v->cargo_type);
1788 AirportAnimationTrigger(st, AAT_STATION_CARGO_TAKEN, v->cargo_type);
1789 }
1790
1791 new_load_unload_ticks += loaded;
1792
1793 dirty_vehicle = dirty_station = true;
1794 }
1795 }
1796
1797 if (v->cargo.StoredCount() >= v->cargo_cap) {
1798 SetBit(cargo_full, v->cargo_type);
1799 } else {
1800 SetBit(cargo_not_full, v->cargo_type);
1801 }
1802 }
1803
1804 if (anything_loaded || anything_unloaded) {
1805 if (front->type == VEH_TRAIN) {
1806 TriggerStationRandomisation(st, front->tile, SRT_TRAIN_LOADS);
1807 TriggerStationAnimation(st, front->tile, SAT_TRAIN_LOADS);
1808 }
1809 }
1810
1811 /* Only set completely_emptied, if we just unloaded all remaining cargo */
1812 completely_emptied &= anything_unloaded;
1813
1814 if (!anything_unloaded) delete payment;
1815
1816 ClrBit(front->vehicle_flags, VF_STOP_LOADING);
1817 if (anything_loaded || anything_unloaded) {
1818 if (_settings_game.order.gradual_loading) {
1819 /* The time it takes to load one 'slice' of cargo or passengers depends
1820 * on the vehicle type - the values here are those found in TTDPatch */
1821 const uint gradual_loading_wait_time[] = { 40, 20, 10, 20 };
1822
1823 new_load_unload_ticks = gradual_loading_wait_time[front->type];
1824 }
1825 /* We loaded less cargo than possible for all cargo types and it's not full
1826 * load and we're not supposed to wait any longer: stop loading. */
1827 if (!anything_unloaded && full_load_amount == 0 && reservation_left == 0 && !(front->current_order.GetLoadType() & OLFB_FULL_LOAD) &&
1828 front->current_order_time >= (uint)max(front->current_order.GetTimetabledWait() - front->lateness_counter, 0)) {
1829 SetBit(front->vehicle_flags, VF_STOP_LOADING);
1830 }
1831
1832 UpdateLoadUnloadTicks(front, st, new_load_unload_ticks);
1833 } else {
1834 UpdateLoadUnloadTicks(front, st, 20); // We need the ticks for link refreshing.
1835 bool finished_loading = true;
1836 if (front->current_order.GetLoadType() & OLFB_FULL_LOAD) {
1837 if (front->current_order.GetLoadType() == OLF_FULL_LOAD_ANY) {
1838 /* if the aircraft carries passengers and is NOT full, then
1839 * continue loading, no matter how much mail is in */
1840 if ((front->type == VEH_AIRCRAFT && IsCargoInClass(front->cargo_type, CC_PASSENGERS) && front->cargo_cap > front->cargo.StoredCount()) ||
1841 (cargo_not_full && (cargo_full & ~cargo_not_full) == 0)) { // There are still non-full cargoes
1842 finished_loading = false;
1843 }
1844 } else if (cargo_not_full != 0) {
1845 finished_loading = false;
1846 }
1847
1848 /* Refresh next hop stats if we're full loading to make the links
1849 * known to the distribution algorithm and allow cargo to be sent
1850 * along them. Otherwise the vehicle could wait for cargo
1851 * indefinitely if it hasn't visited the other links yet, or if the
1852 * links die while it's loading. */
1853 if (!finished_loading) LinkRefresher::Run(front, true, true);
1854 }
1855
1856 SB(front->vehicle_flags, VF_LOADING_FINISHED, 1, finished_loading);
1857 }
1858
1859 /* Calculate the loading indicator fill percent and display
1860 * In the Game Menu do not display indicators
1861 * If _settings_client.gui.loading_indicators == 2, show indicators (bool can be promoted to int as 0 or 1 - results in 2 > 0,1 )
1862 * if _settings_client.gui.loading_indicators == 1, _local_company must be the owner or must be a spectator to show ind., so 1 > 0
1863 * if _settings_client.gui.loading_indicators == 0, do not display indicators ... 0 is never greater than anything
1864 */
1865 if (_game_mode != GM_MENU && (_settings_client.gui.loading_indicators > (uint)(front->owner != _local_company && _local_company != COMPANY_SPECTATOR))) {
1866 StringID percent_up_down = STR_NULL;
1867 int percent = CalcPercentVehicleFilled(front, &percent_up_down);
1868 if (front->fill_percent_te_id == INVALID_TE_ID) {
1869 front->fill_percent_te_id = ShowFillingPercent(front->x_pos, front->y_pos, front->z_pos + 20, percent, percent_up_down);
1870 } else {
1871 UpdateFillingPercent(front->fill_percent_te_id, percent, percent_up_down);
1872 }
1873 }
1874
1875 if (completely_emptied) {
1876 /* Make sure the vehicle is marked dirty, since we need to update the NewGRF
1877 * properties such as weight, power and TE whenever the trigger runs. */
1878 dirty_vehicle = true;
1879 TriggerVehicle(front, VEHICLE_TRIGGER_EMPTY);
1880 }
1881
1882 if (dirty_vehicle) {
1883 SetWindowDirty(GetWindowClassForVehicleType(front->type), front->owner);
1884 SetWindowDirty(WC_VEHICLE_DETAILS, front->index);
1885 front->MarkDirty();
1886 }
1887 if (dirty_station) {
1888 st->MarkTilesDirty(true);
1889 SetWindowDirty(WC_STATION_VIEW, last_visited);
1890 InvalidateWindowData(WC_STATION_LIST, last_visited);
1891 }
1892 }
1893
1899 void LoadUnloadStation(Station *st)
1900 {
1901 /* No vehicle is here... */
1902 if (st->loading_vehicles.empty()) return;
1903
1904 Vehicle *last_loading = NULL;
1905 std::list<Vehicle *>::iterator iter;
1906
1907 /* Check if anything will be loaded at all. Otherwise we don't need to reserve either. */
1908 for (iter = st->loading_vehicles.begin(); iter != st->loading_vehicles.end(); ++iter) {
1909 Vehicle *v = *iter;
1910
1911 if ((v->vehstatus & (VS_STOPPED | VS_CRASHED))) continue;
1912
1913 assert(v->load_unload_ticks != 0);
1914 if (--v->load_unload_ticks == 0) last_loading = v;
1915 }
1916
1917 /* We only need to reserve and load/unload up to the last loading vehicle.
1918 * Anything else will be forgotten anyway after returning from this function.
1919 *
1920 * Especially this means we do _not_ need to reserve cargo for a single
1921 * consist in a station which is not allowed to load yet because its
1922 * load_unload_ticks is still not 0.
1923 */
1924 if (last_loading == NULL) return;
1925
1926 for (iter = st->loading_vehicles.begin(); iter != st->loading_vehicles.end(); ++iter) {
1927 Vehicle *v = *iter;
1928 if (!(v->vehstatus & (VS_STOPPED | VS_CRASHED))) LoadUnloadVehicle(v);
1929 if (v == last_loading) break;
1930 }
1931
1932 /* Call the production machinery of industries */
1933 const Industry * const *isend = _cargo_delivery_destinations.End();
1934 for (Industry **iid = _cargo_delivery_destinations.Begin(); iid != isend; iid++) {
1935 TriggerIndustryProduction(*iid);
1936 }
1937 _cargo_delivery_destinations.Clear();
1938 }
1939
1943 void CompaniesMonthlyLoop()
1944 {
1945 CompaniesGenStatistics();
1946 if (_settings_game.economy.inflation) {
1947 AddInflation();
1948 RecomputePrices();
1949 }
1950 CompaniesPayInterest();
1951 HandleEconomyFluctuations();
1952 }
1953
1954 static void DoAcquireCompany(Company *c)
1955 {
1956 CompanyID ci = c->index;
1957
1958 CompanyNewsInformation *cni = MallocT<CompanyNewsInformation>(1);
1959 cni->FillData(c, Company::Get(_current_company));
1960
1961 SetDParam(0, STR_NEWS_COMPANY_MERGER_TITLE);
1962 SetDParam(1, c->bankrupt_value == 0 ? STR_NEWS_MERGER_TAKEOVER_TITLE : STR_NEWS_COMPANY_MERGER_DESCRIPTION);
1963 SetDParamStr(2, cni->company_name);
1964 SetDParamStr(3, cni->other_company_name);
1965 SetDParam(4, c->bankrupt_value);
1966 AddCompanyNewsItem(STR_MESSAGE_NEWS_FORMAT, cni);
1967 AI::BroadcastNewEvent(new ScriptEventCompanyMerger(ci, _current_company));
1968 Game::NewEvent(new ScriptEventCompanyMerger(ci, _current_company));
1969
1970 ChangeOwnershipOfCompanyItems(ci, _current_company);
1971
1972 if (c->bankrupt_value == 0) {
1973 Company *owner = Company::Get(_current_company);
1974 owner->current_loan += c->current_loan;
1975 }
1976
1977 if (c->is_ai) AI::Stop(c->index);
1978
1979 DeleteCompanyWindows(ci);
1980 InvalidateWindowClassesData(WC_TRAINS_LIST, 0);
1981 InvalidateWindowClassesData(WC_SHIPS_LIST, 0);
1982 InvalidateWindowClassesData(WC_ROADVEH_LIST, 0);
1983 InvalidateWindowClassesData(WC_AIRCRAFT_LIST, 0);
1984
1985 delete c;
1986 }
1987
1988 extern int GetAmountOwnedBy(const Company *c, Owner owner);
1989
1999 CommandCost CmdBuyShareInCompany(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2000 {
2001 CommandCost cost(EXPENSES_OTHER);
2002 CompanyID target_company = (CompanyID)p1;
2003 Company *c = Company::GetIfValid(target_company);
2004
2005 /* Check if buying shares is allowed (protection against modified clients)
2006 * Cannot buy own shares */
2007 if (c == NULL || !_settings_game.economy.allow_shares || _current_company == target_company) return CMD_ERROR;
2008
2009 /* Protect new companies from hostile takeovers */
2010 if (_cur_year - c->inaugurated_year < 6) return_cmd_error(STR_ERROR_PROTECTED);
2011
2012 /* Those lines are here for network-protection (clients can be slow) */
2013 if (GetAmountOwnedBy(c, COMPANY_SPECTATOR) == 0) return cost;
2014
2015 if (GetAmountOwnedBy(c, COMPANY_SPECTATOR) == 1) {
2016 if (!c->is_ai) return cost; // We can not buy out a real company (temporarily). TODO: well, enable it obviously.
2017
2018 if (GetAmountOwnedBy(c, _current_company) == 3 && !MayCompanyTakeOver(_current_company, target_company)) return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
2019 }
2020
2021
2022 cost.AddCost(CalculateCompanyValue(c) >> 2);
2023 if (flags & DC_EXEC) {
2024 OwnerByte *b = c->share_owners;
2025
2026 while (*b != COMPANY_SPECTATOR) b++; // share owners is guaranteed to contain at least one COMPANY_SPECTATOR
2027 *b = _current_company;
2028
2029 for (int i = 0; c->share_owners[i] == _current_company;) {
2030 if (++i == 4) {
2031 c->bankrupt_value = 0;
2032 DoAcquireCompany(c);
2033 break;
2034 }
2035 }
2036 InvalidateWindowData(WC_COMPANY, target_company);
2037 CompanyAdminUpdate(c);
2038 }
2039 return cost;
2040 }
2041
2051 CommandCost CmdSellShareInCompany(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2052 {
2053 CompanyID target_company = (CompanyID)p1;
2054 Company *c = Company::GetIfValid(target_company);
2055
2056 /* Cannot sell own shares */
2057 if (c == NULL || _current_company == target_company) return CMD_ERROR;
2058
2059 /* Check if selling shares is allowed (protection against modified clients).
2060 * However, we must sell shares of companies being closed down. */
2061 if (!_settings_game.economy.allow_shares && !(flags & DC_BANKRUPT)) return CMD_ERROR;
2062
2063 /* Those lines are here for network-protection (clients can be slow) */
2064 if (GetAmountOwnedBy(c, _current_company) == 0) return CommandCost();
2065
2066 /* adjust it a little to make it less profitable to sell and buy */
2067 Money cost = CalculateCompanyValue(c) >> 2;
2068 cost = -(cost - (cost >> 7));
2069
2070 if (flags & DC_EXEC) {
2071 OwnerByte *b = c->share_owners;
2072 while (*b != _current_company) b++; // share owners is guaranteed to contain company
2073 *b = COMPANY_SPECTATOR;
2074 InvalidateWindowData(WC_COMPANY, target_company);
2075 CompanyAdminUpdate(c);
2076 }
2077 return CommandCost(EXPENSES_OTHER, cost);
2078 }
2079
2092 CommandCost CmdBuyCompany(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
2093 {
2094 CompanyID target_company = (CompanyID)p1;
2095 Company *c = Company::GetIfValid(target_company);
2096 if (c == NULL) return CMD_ERROR;
2097
2098 /* Disable takeovers when not asked */
2099 if (!HasBit(c->bankrupt_asked, _current_company)) return CMD_ERROR;
2100
2101 /* Disable taking over the local company in single player */
2102 if (!_networking && _local_company == c->index) return CMD_ERROR;
2103
2104 /* Do not allow companies to take over themselves */
2105 if (target_company == _current_company) return CMD_ERROR;
2106
2107 /* Disable taking over when not allowed. */
2108 if (!MayCompanyTakeOver(_current_company, target_company)) return CMD_ERROR;
2109
2110 /* Get the cost here as the company is deleted in DoAcquireCompany. */
2111 CommandCost cost(EXPENSES_OTHER, c->bankrupt_value);
2112
2113 if (flags & DC_EXEC) {
2114 DoAcquireCompany(c);
2115 }
2116 return cost;
2117 }