Files @ r28060:53690f1ef210
Branch filter:

Location: cpp/openttd-patchpack/source/src/vehicle_cmd.cpp

frosch
Feature: Base graphics can offer parameters for additional settings.
   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
/*
 * This file is part of OpenTTD.
 * 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.
 * 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.
 * 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/>.
 */

/** @file vehicle_cmd.cpp Commands for vehicles. */

#include "stdafx.h"
#include "roadveh.h"
#include "news_func.h"
#include "airport.h"
#include "command_func.h"
#include "company_func.h"
#include "train.h"
#include "aircraft.h"
#include "newgrf_text.h"
#include "vehicle_func.h"
#include "string_func.h"
#include "depot_map.h"
#include "vehiclelist.h"
#include "engine_func.h"
#include "articulated_vehicles.h"
#include "autoreplace_gui.h"
#include "group.h"
#include "order_backup.h"
#include "ship.h"
#include "newgrf.h"
#include "company_base.h"
#include "core/random_func.hpp"
#include "vehicle_cmd.h"
#include "aircraft_cmd.h"
#include "autoreplace_cmd.h"
#include "group_cmd.h"
#include "order_cmd.h"
#include "roadveh_cmd.h"
#include "train_cmd.h"
#include "ship_cmd.h"
#include <sstream>
#include <iomanip>

#include "table/strings.h"

#include "safeguards.h"

/* Tables used in vehicle_func.h to find the right error message for a certain vehicle type */
const StringID _veh_build_msg_table[] = {
	STR_ERROR_CAN_T_BUY_TRAIN,
	STR_ERROR_CAN_T_BUY_ROAD_VEHICLE,
	STR_ERROR_CAN_T_BUY_SHIP,
	STR_ERROR_CAN_T_BUY_AIRCRAFT,
};

const StringID _veh_sell_msg_table[] = {
	STR_ERROR_CAN_T_SELL_TRAIN,
	STR_ERROR_CAN_T_SELL_ROAD_VEHICLE,
	STR_ERROR_CAN_T_SELL_SHIP,
	STR_ERROR_CAN_T_SELL_AIRCRAFT,
};

const StringID _veh_refit_msg_table[] = {
	STR_ERROR_CAN_T_REFIT_TRAIN,
	STR_ERROR_CAN_T_REFIT_ROAD_VEHICLE,
	STR_ERROR_CAN_T_REFIT_SHIP,
	STR_ERROR_CAN_T_REFIT_AIRCRAFT,
};

const StringID _send_to_depot_msg_table[] = {
	STR_ERROR_CAN_T_SEND_TRAIN_TO_DEPOT,
	STR_ERROR_CAN_T_SEND_ROAD_VEHICLE_TO_DEPOT,
	STR_ERROR_CAN_T_SEND_SHIP_TO_DEPOT,
	STR_ERROR_CAN_T_SEND_AIRCRAFT_TO_HANGAR,
};


/**
 * Build a vehicle.
 * @param flags for command
 * @param tile tile of depot where the vehicle is built
 * @param eid vehicle type being built.
 * @param use_free_vehicles use free vehicles when building the vehicle.
 * @param cargo refit cargo type.
 * @param client_id User
 * @return the cost of this operation + the new vehicle ID + the refitted capacity + the refitted mail capacity (aircraft) or an error
 */
std::tuple<CommandCost, VehicleID, uint, uint16_t, CargoArray> CmdBuildVehicle(DoCommandFlag flags, TileIndex tile, EngineID eid, bool use_free_vehicles, CargoID cargo, ClientID client_id)
{
	/* Elementary check for valid location. */
	if (!IsDepotTile(tile) || !IsTileOwner(tile, _current_company)) return { CMD_ERROR, INVALID_VEHICLE, 0, 0, {} };

	VehicleType type = GetDepotVehicleType(tile);

	/* Validate the engine type. */
	if (!IsEngineBuildable(eid, type, _current_company)) return { CommandCost(STR_ERROR_RAIL_VEHICLE_NOT_AVAILABLE + type), INVALID_VEHICLE, 0, 0, {} };

	/* Validate the cargo type. */
	if (cargo >= NUM_CARGO && IsValidCargoID(cargo)) return { CMD_ERROR, INVALID_VEHICLE, 0, 0, {} };

	const Engine *e = Engine::Get(eid);
	CommandCost value(EXPENSES_NEW_VEHICLES, e->GetCost());

	/* Engines without valid cargo should not be available */
	CargoID default_cargo = e->GetDefaultCargoType();
	if (!IsValidCargoID(default_cargo)) return { CMD_ERROR, INVALID_VEHICLE, 0, 0, {} };

	bool refitting = IsValidCargoID(cargo) && cargo != default_cargo;

	/* Check whether the number of vehicles we need to build can be built according to pool space. */
	uint num_vehicles;
	switch (type) {
		case VEH_TRAIN:    num_vehicles = (e->u.rail.railveh_type == RAILVEH_MULTIHEAD ? 2 : 1) + CountArticulatedParts(eid, false); break;
		case VEH_ROAD:     num_vehicles = 1 + CountArticulatedParts(eid, false); break;
		case VEH_SHIP:     num_vehicles = 1; break;
		case VEH_AIRCRAFT: num_vehicles = e->u.air.subtype & AIR_CTOL ? 2 : 3; break;
		default: NOT_REACHED(); // Safe due to IsDepotTile()
	}
	if (!Vehicle::CanAllocateItem(num_vehicles)) return { CommandCost(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME), INVALID_VEHICLE, 0, 0, {} };

	/* Check whether we can allocate a unit number. Autoreplace does not allocate
	 * an unit number as it will (always) reuse the one of the replaced vehicle
	 * and (train) wagons don't have an unit number in any scenario. */
	UnitID unit_num = (flags & DC_QUERY_COST || flags & DC_AUTOREPLACE || (type == VEH_TRAIN && e->u.rail.railveh_type == RAILVEH_WAGON)) ? 0 : GetFreeUnitNumber(type);
	if (unit_num == UINT16_MAX) return { CommandCost(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME), INVALID_VEHICLE, 0, 0, {} };

	/* If we are refitting we need to temporarily purchase the vehicle to be able to
	 * test it. */
	DoCommandFlag subflags = flags;
	if (refitting && !(flags & DC_EXEC)) subflags |= DC_EXEC | DC_AUTOREPLACE;

	/* Vehicle construction needs random bits, so we have to save the random
	 * seeds to prevent desyncs. */
	SavedRandomSeeds saved_seeds;
	SaveRandomSeeds(&saved_seeds);

	Vehicle *v = nullptr;
	switch (type) {
		case VEH_TRAIN:    value.AddCost(CmdBuildRailVehicle(subflags, tile, e, &v)); break;
		case VEH_ROAD:     value.AddCost(CmdBuildRoadVehicle(subflags, tile, e, &v)); break;
		case VEH_SHIP:     value.AddCost(CmdBuildShip       (subflags, tile, e, &v)); break;
		case VEH_AIRCRAFT: value.AddCost(CmdBuildAircraft   (subflags, tile, e, &v)); break;
		default: NOT_REACHED(); // Safe due to IsDepotTile()
	}

	VehicleID veh_id = INVALID_VEHICLE;
	uint refitted_capacity = 0;
	uint16_t refitted_mail_capacity = 0;
	CargoArray cargo_capacities{};
	if (value.Succeeded()) {
		if (subflags & DC_EXEC) {
			v->unitnumber = unit_num;
			v->value      = value.GetCost();
			veh_id        = v->index;
		}

		if (refitting) {
			/* Refit only one vehicle. If we purchased an engine, it may have gained free wagons. */
			CommandCost cc;
			std::tie(cc, refitted_capacity, refitted_mail_capacity, cargo_capacities) = CmdRefitVehicle(flags, v->index, cargo, 0, false, false, 1);
			value.AddCost(cc);
		} else {
			/* Fill in non-refitted capacities */
			if (e->type == VEH_TRAIN || e->type == VEH_ROAD) {
				cargo_capacities = GetCapacityOfArticulatedParts(eid);
				refitted_capacity = cargo_capacities[default_cargo];
				refitted_mail_capacity = 0;
			} else {
				refitted_capacity = e->GetDisplayDefaultCapacity(&refitted_mail_capacity);
				cargo_capacities[default_cargo] = refitted_capacity;
				cargo_capacities[CT_MAIL] = refitted_mail_capacity;
			}
		}

		if (flags & DC_EXEC) {
			if (type == VEH_TRAIN && use_free_vehicles && !(flags & DC_AUTOREPLACE)) {
				/* Move any free wagons to the new vehicle. */
				NormalizeTrainVehInDepot(Train::From(v));
			}

			InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
			InvalidateWindowClassesData(GetWindowClassForVehicleType(type), 0);
			SetWindowDirty(WC_COMPANY, _current_company);
			if (IsLocalCompany()) {
				InvalidateAutoreplaceWindow(v->engine_type, v->group_id); // updates the auto replace window (must be called before incrementing num_engines)
			}
		}

		if (subflags & DC_EXEC) {
			GroupStatistics::CountEngine(v, 1);
			GroupStatistics::UpdateAutoreplace(_current_company);

			if (v->IsPrimaryVehicle()) {
				GroupStatistics::CountVehicle(v, 1);
				if (!(subflags & DC_AUTOREPLACE)) OrderBackup::Restore(v, client_id);
			}
		}


		/* If we are not in DC_EXEC undo everything */
		if (flags != subflags) {
			Command<CMD_SELL_VEHICLE>::Do(DC_EXEC, v->index, false, false, INVALID_CLIENT_ID);
		}
	}

	/* Only restore if we actually did some refitting */
	if (flags != subflags) RestoreRandomSeeds(saved_seeds);

	return { value, veh_id, refitted_capacity, refitted_mail_capacity, cargo_capacities };
}

/**
 * Sell a vehicle.
 * @param flags for command.
 * @param v_id vehicle ID being sold.
 * @param sell_chain sell the vehicle and all vehicles following it in the chain.
 * @param backup_order make a backup of the vehicle's order (if an engine).
 * @param client_id User.
 * @return the cost of this operation or an error.
 */
CommandCost CmdSellVehicle(DoCommandFlag flags, VehicleID v_id, bool sell_chain, bool backup_order, ClientID client_id)
{
	Vehicle *v = Vehicle::GetIfValid(v_id);
	if (v == nullptr) return CMD_ERROR;

	Vehicle *front = v->First();

	CommandCost ret = CheckOwnership(front->owner);
	if (ret.Failed()) return ret;

	if (front->vehstatus & VS_CRASHED) return_cmd_error(STR_ERROR_VEHICLE_IS_DESTROYED);

	if (!front->IsStoppedInDepot()) return_cmd_error(STR_ERROR_TRAIN_MUST_BE_STOPPED_INSIDE_DEPOT + front->type);

	/* Can we actually make the order backup, i.e. are there enough orders? */
	if (backup_order &&
			front->orders != nullptr &&
			!front->orders->IsShared() &&
			!Order::CanAllocateItem(front->orders->GetNumOrders())) {
		/* Only happens in exceptional cases when there aren't enough orders anyhow.
		 * Thus it should be safe to just drop the orders in that case. */
		backup_order = false;
	}

	if (v->type == VEH_TRAIN) {
		ret = CmdSellRailWagon(flags, v, sell_chain, backup_order, client_id);
	} else {
		ret = CommandCost(EXPENSES_NEW_VEHICLES, -front->value);

		if (flags & DC_EXEC) {
			if (front->IsPrimaryVehicle() && backup_order) OrderBackup::Backup(front, client_id);
			delete front;
		}
	}

	return ret;
}

/**
 * Helper to run the refit cost callback.
 * @param v The vehicle we are refitting, can be nullptr.
 * @param engine_type Which engine to refit
 * @param new_cid Cargo type we are refitting to.
 * @param new_subtype New cargo subtype.
 * @param[out] auto_refit_allowed The refit is allowed as an auto-refit.
 * @return Price for refitting
 */
static int GetRefitCostFactor(const Vehicle *v, EngineID engine_type, CargoID new_cid, byte new_subtype, bool *auto_refit_allowed)
{
	/* Prepare callback param with info about the new cargo type. */
	const Engine *e = Engine::Get(engine_type);

	/* Is this vehicle a NewGRF vehicle? */
	if (e->GetGRF() != nullptr) {
		const CargoSpec *cs = CargoSpec::Get(new_cid);
		uint32_t param1 = (cs->classes << 16) | (new_subtype << 8) | e->GetGRF()->cargo_map[new_cid];

		uint16_t cb_res = GetVehicleCallback(CBID_VEHICLE_REFIT_COST, param1, 0, engine_type, v);
		if (cb_res != CALLBACK_FAILED) {
			*auto_refit_allowed = HasBit(cb_res, 14);
			int factor = GB(cb_res, 0, 14);
			if (factor >= 0x2000) factor -= 0x4000; // Treat as signed integer.
			return factor;
		}
	}

	*auto_refit_allowed = e->info.refit_cost == 0;
	return (v == nullptr || v->cargo_type != new_cid) ? e->info.refit_cost : 0;
}

/**
 * Learn the price of refitting a certain engine
 * @param v The vehicle we are refitting, can be nullptr.
 * @param engine_type Which engine to refit
 * @param new_cid Cargo type we are refitting to.
 * @param new_subtype New cargo subtype.
 * @param[out] auto_refit_allowed The refit is allowed as an auto-refit.
 * @return Price for refitting
 */
static CommandCost GetRefitCost(const Vehicle *v, EngineID engine_type, CargoID new_cid, byte new_subtype, bool *auto_refit_allowed)
{
	ExpensesType expense_type;
	const Engine *e = Engine::Get(engine_type);
	Price base_price;
	int cost_factor = GetRefitCostFactor(v, engine_type, new_cid, new_subtype, auto_refit_allowed);
	switch (e->type) {
		case VEH_SHIP:
			base_price = PR_BUILD_VEHICLE_SHIP;
			expense_type = EXPENSES_SHIP_RUN;
			break;

		case VEH_ROAD:
			base_price = PR_BUILD_VEHICLE_ROAD;
			expense_type = EXPENSES_ROADVEH_RUN;
			break;

		case VEH_AIRCRAFT:
			base_price = PR_BUILD_VEHICLE_AIRCRAFT;
			expense_type = EXPENSES_AIRCRAFT_RUN;
			break;

		case VEH_TRAIN:
			base_price = (e->u.rail.railveh_type == RAILVEH_WAGON) ? PR_BUILD_VEHICLE_WAGON : PR_BUILD_VEHICLE_TRAIN;
			cost_factor <<= 1;
			expense_type = EXPENSES_TRAIN_RUN;
			break;

		default: NOT_REACHED();
	}
	if (cost_factor < 0) {
		return CommandCost(expense_type, -GetPrice(base_price, -cost_factor, e->GetGRF(), -10));
	} else {
		return CommandCost(expense_type, GetPrice(base_price, cost_factor, e->GetGRF(), -10));
	}
}

/** Helper structure for RefitVehicle() */
struct RefitResult {
	Vehicle *v;         ///< Vehicle to refit
	uint capacity;      ///< New capacity of vehicle
	uint mail_capacity; ///< New mail capacity of aircraft
	byte subtype;       ///< cargo subtype to refit to
};

/**
 * Refits a vehicle (chain).
 * This is the vehicle-type independent part of the CmdRefitXXX functions.
 * @param v            The vehicle to refit.
 * @param only_this    Whether to only refit this vehicle, or to check the rest of them.
 * @param num_vehicles Number of vehicles to refit (not counting articulated parts). Zero means the whole chain.
 * @param new_cid      Cargotype to refit to
 * @param new_subtype  Cargo subtype to refit to. 0xFF means to try keeping the same subtype according to GetBestFittingSubType().
 * @param flags        Command flags
 * @param auto_refit   Refitting is done as automatic refitting outside a depot.
 * @return Refit cost + refittet capacity + mail capacity (aircraft).
 */
static std::tuple<CommandCost, uint, uint16_t, CargoArray> RefitVehicle(Vehicle *v, bool only_this, uint8_t num_vehicles, CargoID new_cid, byte new_subtype, DoCommandFlag flags, bool auto_refit)
{
	CommandCost cost(v->GetExpenseType(false));
	uint total_capacity = 0;
	uint total_mail_capacity = 0;
	num_vehicles = num_vehicles == 0 ? UINT8_MAX : num_vehicles;
	CargoArray cargo_capacities{};

	VehicleSet vehicles_to_refit;
	if (!only_this) {
		GetVehicleSet(vehicles_to_refit, v, num_vehicles);
		/* In this case, we need to check the whole chain. */
		v = v->First();
	}

	std::vector<RefitResult> refit_result;

	v->InvalidateNewGRFCacheOfChain();
	byte actual_subtype = new_subtype;
	for (; v != nullptr; v = (only_this ? nullptr : v->Next())) {
		/* Reset actual_subtype for every new vehicle */
		if (!v->IsArticulatedPart()) actual_subtype = new_subtype;

		if (v->type == VEH_TRAIN && std::find(vehicles_to_refit.begin(), vehicles_to_refit.end(), v->index) == vehicles_to_refit.end() && !only_this) continue;

		const Engine *e = v->GetEngine();
		if (!e->CanCarryCargo()) continue;

		/* If the vehicle is not refittable, or does not allow automatic refitting,
		 * count its capacity nevertheless if the cargo matches */
		bool refittable = HasBit(e->info.refit_mask, new_cid) && (!auto_refit || HasBit(e->info.misc_flags, EF_AUTO_REFIT));
		if (!refittable && v->cargo_type != new_cid) {
			uint amount = e->DetermineCapacity(v, nullptr);
			if (amount > 0) cargo_capacities[v->cargo_type] += amount;
			continue;
		}

		/* Determine best fitting subtype if requested */
		if (actual_subtype == 0xFF) {
			actual_subtype = GetBestFittingSubType(v, v, new_cid);
		}

		/* Back up the vehicle's cargo type */
		CargoID temp_cid = v->cargo_type;
		byte temp_subtype = v->cargo_subtype;
		if (refittable) {
			v->cargo_type = new_cid;
			v->cargo_subtype = actual_subtype;
		}

		uint16_t mail_capacity = 0;
		uint amount = e->DetermineCapacity(v, &mail_capacity);
		total_capacity += amount;
		/* mail_capacity will always be zero if the vehicle is not an aircraft. */
		total_mail_capacity += mail_capacity;

		cargo_capacities[new_cid] += amount;
		cargo_capacities[CT_MAIL] += mail_capacity;

		if (!refittable) continue;

		/* Restore the original cargo type */
		v->cargo_type = temp_cid;
		v->cargo_subtype = temp_subtype;

		bool auto_refit_allowed;
		CommandCost refit_cost = GetRefitCost(v, v->engine_type, new_cid, actual_subtype, &auto_refit_allowed);
		if (auto_refit && (flags & DC_QUERY_COST) == 0 && !auto_refit_allowed) {
			/* Sorry, auto-refitting not allowed, subtract the cargo amount again from the total.
			 * When querrying cost/capacity (for example in order refit GUI), we always assume 'allowed'.
			 * It is not predictable. */
			total_capacity -= amount;
			total_mail_capacity -= mail_capacity;

			if (v->cargo_type == new_cid) {
				/* Add the old capacity nevertheless, if the cargo matches */
				total_capacity += v->cargo_cap;
				if (v->type == VEH_AIRCRAFT) total_mail_capacity += v->Next()->cargo_cap;
			}
			continue;
		}
		cost.AddCost(refit_cost);

		/* Record the refitting.
		 * Do not execute the refitting immediately, so DetermineCapacity and GetRefitCost do the same in test and exec run.
		 * (weird NewGRFs)
		 * Note:
		 *  - If the capacity of vehicles depends on other vehicles in the chain, the actual capacity is
		 *    set after RefitVehicle() via ConsistChanged() and friends. The estimation via _returned_refit_capacity will be wrong.
		 *  - We have to call the refit cost callback with the pre-refit configuration of the chain because we want refit and
		 *    autorefit to behave the same, and we need its result for auto_refit_allowed.
		 */
		refit_result.push_back({v, amount, mail_capacity, actual_subtype});
	}

	if (flags & DC_EXEC) {
		/* Store the result */
		for (RefitResult &result : refit_result) {
			Vehicle *u = result.v;
			u->refit_cap = (u->cargo_type == new_cid) ? std::min<uint16_t>(result.capacity, u->refit_cap) : 0;
			if (u->cargo.TotalCount() > u->refit_cap) u->cargo.Truncate(u->cargo.TotalCount() - u->refit_cap);
			u->cargo_type = new_cid;
			u->cargo_cap = result.capacity;
			u->cargo_subtype = result.subtype;
			if (u->type == VEH_AIRCRAFT) {
				Vehicle *w = u->Next();
				assert(w != nullptr);
				w->refit_cap = std::min<uint16_t>(w->refit_cap, result.mail_capacity);
				w->cargo_cap = result.mail_capacity;
				if (w->cargo.TotalCount() > w->refit_cap) w->cargo.Truncate(w->cargo.TotalCount() - w->refit_cap);
			}
		}
	}

	refit_result.clear();
	return { cost, total_capacity, total_mail_capacity, cargo_capacities };
}

/**
 * Refits a vehicle to the specified cargo type.
 * @param flags type of operation
 * @param veh_id vehicle ID to refit
 * @param new_cid New cargo type to refit to.
 * @param new_subtype New cargo subtype to refit to. 0xFF means to try keeping the same subtype according to GetBestFittingSubType().
 * @param auto_refit Automatic refitting.
 * @param only_this Refit only this vehicle. Used only for cloning vehicles.
 * @param num_vehicles Number of vehicles to refit (not counting articulated parts). Zero means all vehicles.
 *                     Only used if "refit only this vehicle" is false.
 * @return the cost of this operation or an error
 */
std::tuple<CommandCost, uint, uint16_t, CargoArray> CmdRefitVehicle(DoCommandFlag flags, VehicleID veh_id, CargoID new_cid, byte new_subtype, bool auto_refit, bool only_this, uint8_t num_vehicles)
{
	Vehicle *v = Vehicle::GetIfValid(veh_id);
	if (v == nullptr) return { CMD_ERROR, 0, 0, {} };

	/* Don't allow disasters and sparks and such to be refitted.
	 * We cannot check for IsPrimaryVehicle as autoreplace also refits in free wagon chains. */
	if (!IsCompanyBuildableVehicleType(v->type)) return { CMD_ERROR, 0, 0, {} };

	Vehicle *front = v->First();

	CommandCost ret = CheckOwnership(front->owner);
	if (ret.Failed()) return { ret, 0, 0, {} };

	bool free_wagon = v->type == VEH_TRAIN && Train::From(front)->IsFreeWagon(); // used by autoreplace/renew

	/* Don't allow shadows and such to be refitted. */
	if (v != front && (v->type == VEH_SHIP || v->type == VEH_AIRCRAFT)) return { CMD_ERROR, 0, 0, {} };

	/* Allow auto-refitting only during loading and normal refitting only in a depot. */
	if ((flags & DC_QUERY_COST) == 0 && // used by the refit GUI, including the order refit GUI.
			!free_wagon && // used by autoreplace/renew
			(!auto_refit || !front->current_order.IsType(OT_LOADING)) && // refit inside stations
			!front->IsStoppedInDepot()) { // refit inside depots
		return { CommandCost(STR_ERROR_TRAIN_MUST_BE_STOPPED_INSIDE_DEPOT + front->type), 0, 0, {} };
	}

	if (front->vehstatus & VS_CRASHED) return { CommandCost(STR_ERROR_VEHICLE_IS_DESTROYED), 0, 0, {} };

	/* Check cargo */
	if (new_cid >= NUM_CARGO) return { CMD_ERROR, 0, 0, {} };

	/* For ships and aircraft there is always only one. */
	only_this |= front->type == VEH_SHIP || front->type == VEH_AIRCRAFT;

	auto [cost, refit_capacity, mail_capacity, cargo_capacities] = RefitVehicle(v, only_this, num_vehicles, new_cid, new_subtype, flags, auto_refit);

	if (flags & DC_EXEC) {
		/* Update the cached variables */
		switch (v->type) {
			case VEH_TRAIN:
				Train::From(front)->ConsistChanged(auto_refit ? CCF_AUTOREFIT : CCF_REFIT);
				break;
			case VEH_ROAD:
				RoadVehUpdateCache(RoadVehicle::From(front), auto_refit);
				if (_settings_game.vehicle.roadveh_acceleration_model != AM_ORIGINAL) RoadVehicle::From(front)->CargoChanged();
				break;

			case VEH_SHIP:
				v->InvalidateNewGRFCacheOfChain();
				Ship::From(v)->UpdateCache();
				break;

			case VEH_AIRCRAFT:
				v->InvalidateNewGRFCacheOfChain();
				UpdateAircraftCache(Aircraft::From(v), true);
				break;

			default: NOT_REACHED();
		}
		front->MarkDirty();

		if (!free_wagon) {
			InvalidateWindowData(WC_VEHICLE_DETAILS, front->index);
			InvalidateWindowClassesData(GetWindowClassForVehicleType(v->type), 0);
		}
		SetWindowDirty(WC_VEHICLE_DEPOT, front->tile);
	} else {
		/* Always invalidate the cache; querycost might have filled it. */
		v->InvalidateNewGRFCacheOfChain();
	}

	return { cost, refit_capacity, mail_capacity, cargo_capacities };
}

/**
 * Start/Stop a vehicle
 * @param flags type of operation
 * @param veh_id vehicle to start/stop, don't forget to change CcStartStopVehicle if you modify this!
 * @param evaluate_startstop_cb Shall the start/stop newgrf callback be evaluated (only valid with DC_AUTOREPLACE for network safety)
 * @return the cost of this operation or an error
 */
CommandCost CmdStartStopVehicle(DoCommandFlag flags, VehicleID veh_id, bool evaluate_startstop_cb)
{
	/* Disable the effect of p2 bit 0, when DC_AUTOREPLACE is not set */
	if ((flags & DC_AUTOREPLACE) == 0) evaluate_startstop_cb = true;

	Vehicle *v = Vehicle::GetIfValid(veh_id);
	if (v == nullptr || !v->IsPrimaryVehicle()) return CMD_ERROR;

	CommandCost ret = CheckOwnership(v->owner);
	if (ret.Failed()) return ret;

	if (v->vehstatus & VS_CRASHED) return_cmd_error(STR_ERROR_VEHICLE_IS_DESTROYED);

	switch (v->type) {
		case VEH_TRAIN:
			if ((v->vehstatus & VS_STOPPED) && Train::From(v)->gcache.cached_power == 0) return_cmd_error(STR_ERROR_TRAIN_START_NO_POWER);
			break;

		case VEH_SHIP:
		case VEH_ROAD:
			break;

		case VEH_AIRCRAFT: {
			Aircraft *a = Aircraft::From(v);
			/* cannot stop airplane when in flight, or when taking off / landing */
			if (a->state >= STARTTAKEOFF && a->state < TERM7) return_cmd_error(STR_ERROR_AIRCRAFT_IS_IN_FLIGHT);
			if (HasBit(a->flags, VAF_HELI_DIRECT_DESCENT)) return_cmd_error(STR_ERROR_AIRCRAFT_IS_IN_FLIGHT);
			break;
		}

		default: return CMD_ERROR;
	}

	if (evaluate_startstop_cb) {
		/* Check if this vehicle can be started/stopped. Failure means 'allow'. */
		uint16_t callback = GetVehicleCallback(CBID_VEHICLE_START_STOP_CHECK, 0, 0, v->engine_type, v);
		StringID error = STR_NULL;
		if (callback != CALLBACK_FAILED) {
			if (v->GetGRF()->grf_version < 8) {
				/* 8 bit result 0xFF means 'allow' */
				if (callback < 0x400 && GB(callback, 0, 8) != 0xFF) error = GetGRFStringID(v->GetGRFID(), 0xD000 + callback);
			} else {
				if (callback < 0x400) {
					error = GetGRFStringID(v->GetGRFID(), 0xD000 + callback);
				} else {
					switch (callback) {
						case 0x400: // allow
							break;

						default: // unknown reason -> disallow
							error = STR_ERROR_INCOMPATIBLE_RAIL_TYPES;
							break;
					}
				}
			}
		}
		if (error != STR_NULL) return_cmd_error(error);
	}

	if (flags & DC_EXEC) {
		if (v->IsStoppedInDepot() && (flags & DC_AUTOREPLACE) == 0) DeleteVehicleNews(veh_id, STR_NEWS_TRAIN_IS_WAITING + v->type);

		v->vehstatus ^= VS_STOPPED;
		if (v->type != VEH_TRAIN) v->cur_speed = 0; // trains can stop 'slowly'
		v->MarkDirty();
		SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
		SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
		SetWindowClassesDirty(GetWindowClassForVehicleType(v->type));
		InvalidateWindowData(WC_VEHICLE_VIEW, v->index);
	}
	return CommandCost();
}

/**
 * Starts or stops a lot of vehicles
 * @param flags type of operation
 * @param tile Tile of the depot where the vehicles are started/stopped (only used for depots)
 * @param do_start set = start vehicles, unset = stop vehicles
 * @param vehicle_list_window if set, then it's a vehicle list window, not a depot and Tile is ignored in this case
 * @param vli VehicleListIdentifier
 * @return the cost of this operation or an error
 */
CommandCost CmdMassStartStopVehicle(DoCommandFlag flags, TileIndex tile, bool do_start, bool vehicle_list_window, const VehicleListIdentifier &vli)
{
	VehicleList list;

	if (!vli.Valid()) return CMD_ERROR;
	if (!IsCompanyBuildableVehicleType(vli.vtype)) return CMD_ERROR;

	if (vehicle_list_window) {
		if (!GenerateVehicleSortList(&list, vli)) return CMD_ERROR;
	} else {
		if (!IsDepotTile(tile) || !IsTileOwner(tile, _current_company)) return CMD_ERROR;
		/* Get the list of vehicles in the depot */
		BuildDepotVehicleList(vli.vtype, tile, &list, nullptr);
	}

	for (uint i = 0; i < list.size(); i++) {
		const Vehicle *v = list[i];

		if (!!(v->vehstatus & VS_STOPPED) != do_start) continue;

		if (!vehicle_list_window && !v->IsChainInDepot()) continue;

		/* Just try and don't care if some vehicle's can't be stopped. */
		Command<CMD_START_STOP_VEHICLE>::Do(flags, v->index, false);
	}

	return CommandCost();
}

/**
 * Sells all vehicles in a depot
 * @param flags type of operation
 * @param tile Tile of the depot where the depot is
 * @param vehicle_type Vehicle type
 * @return the cost of this operation or an error
 */
CommandCost CmdDepotSellAllVehicles(DoCommandFlag flags, TileIndex tile, VehicleType vehicle_type)
{
	VehicleList list;

	CommandCost cost(EXPENSES_NEW_VEHICLES);

	if (!IsCompanyBuildableVehicleType(vehicle_type)) return CMD_ERROR;
	if (!IsDepotTile(tile) || !IsTileOwner(tile, _current_company)) return CMD_ERROR;

	/* Get the list of vehicles in the depot */
	BuildDepotVehicleList(vehicle_type, tile, &list, &list);

	CommandCost last_error = CMD_ERROR;
	bool had_success = false;
	for (uint i = 0; i < list.size(); i++) {
		CommandCost ret = Command<CMD_SELL_VEHICLE>::Do(flags, list[i]->index, true, false, INVALID_CLIENT_ID);
		if (ret.Succeeded()) {
			cost.AddCost(ret);
			had_success = true;
		} else {
			last_error = ret;
		}
	}

	return had_success ? cost : last_error;
}

/**
 * Autoreplace all vehicles in the depot
 * @param flags type of operation
 * @param tile Tile of the depot where the vehicles are
 * @param vehicle_type Type of vehicle
 * @return the cost of this operation or an error
 */
CommandCost CmdDepotMassAutoReplace(DoCommandFlag flags, TileIndex tile, VehicleType vehicle_type)
{
	VehicleList list;
	CommandCost cost = CommandCost(EXPENSES_NEW_VEHICLES);

	if (!IsCompanyBuildableVehicleType(vehicle_type)) return CMD_ERROR;
	if (!IsDepotTile(tile) || !IsTileOwner(tile, _current_company)) return CMD_ERROR;

	/* Get the list of vehicles in the depot */
	BuildDepotVehicleList(vehicle_type, tile, &list, &list, true);

	for (uint i = 0; i < list.size(); i++) {
		const Vehicle *v = list[i];

		/* Ensure that the vehicle completely in the depot */
		if (!v->IsChainInDepot()) continue;

		CommandCost ret = Command<CMD_AUTOREPLACE_VEHICLE>::Do(flags, v->index);

		if (ret.Succeeded()) cost.AddCost(ret);
	}
	return cost;
}

/**
 * Test if a name is unique among vehicle names.
 * @param name Name to test.
 * @return True ifffffff the name is unique.
 */
bool IsUniqueVehicleName(const std::string &name)
{
	for (const Vehicle *v : Vehicle::Iterate()) {
		if (!v->name.empty() && v->name == name) return false;
	}

	return true;
}

/**
 * Clone the custom name of a vehicle, adding or incrementing a number.
 * @param src Source vehicle, with a custom name.
 * @param dst Destination vehicle.
 */
static void CloneVehicleName(const Vehicle *src, Vehicle *dst)
{
	std::string buf;

	/* Find the position of the first digit in the last group of digits. */
	size_t number_position;
	for (number_position = src->name.length(); number_position > 0; number_position--) {
		/* The design of UTF-8 lets this work simply without having to check
		 * for UTF-8 sequences. */
		if (src->name[number_position - 1] < '0' || src->name[number_position - 1] > '9') break;
	}

	/* Format buffer and determine starting number. */
	long num;
	byte padding = 0;
	if (number_position == src->name.length()) {
		/* No digit at the end, so start at number 2. */
		buf = src->name;
		buf += " ";
		number_position = buf.length();
		num = 2;
	} else {
		/* Found digits, parse them and start at the next number. */
		buf = src->name.substr(0, number_position);

		auto num_str = src->name.substr(number_position);
		padding = (byte)num_str.length();

		std::istringstream iss(num_str);
		iss >> num;
		num++;
	}

	/* Check if this name is already taken. */
	for (int max_iterations = 1000; max_iterations > 0; max_iterations--, num++) {
		std::ostringstream oss;

		/* Attach the number to the temporary name. */
		oss << buf << std::setw(padding) << std::setfill('0') << std::internal << num;

		/* Check the name is unique. */
		auto new_name = oss.str();
		if (IsUniqueVehicleName(new_name)) {
			dst->name = new_name;
			break;
		}
	}

	/* All done. If we didn't find a name, it'll just use its default. */
}

/**
 * Clone a vehicle. If it is a train, it will clone all the cars too
 * @param flags type of operation
 * @param tile tile of the depot where the cloned vehicle is build
 * @param veh_id the original vehicle's index
 * @param share_orders shared orders, else copied orders
 * @return the cost of this operation + the new vehicle ID or an error
 */
std::tuple<CommandCost, VehicleID> CmdCloneVehicle(DoCommandFlag flags, TileIndex tile, VehicleID veh_id, bool share_orders)
{
	CommandCost total_cost(EXPENSES_NEW_VEHICLES);

	Vehicle *v = Vehicle::GetIfValid(veh_id);
	if (v == nullptr || !v->IsPrimaryVehicle()) return { CMD_ERROR, INVALID_VEHICLE };
	Vehicle *v_front = v;
	Vehicle *w = nullptr;
	Vehicle *w_front = nullptr;
	Vehicle *w_rear = nullptr;

	/*
	 * v_front is the front engine in the original vehicle
	 * v is the car/vehicle of the original vehicle that is currently being copied
	 * w_front is the front engine of the cloned vehicle
	 * w is the car/vehicle currently being cloned
	 * w_rear is the rear end of the cloned train. It's used to add more cars and is only used by trains
	 */

	CommandCost ret = CheckOwnership(v->owner);
	if (ret.Failed()) return { ret, INVALID_VEHICLE };

	if (v->type == VEH_TRAIN && (!v->IsFrontEngine() || Train::From(v)->crash_anim_pos >= 4400)) return { CMD_ERROR, INVALID_VEHICLE };

	/* check that we can allocate enough vehicles */
	if (!(flags & DC_EXEC)) {
		int veh_counter = 0;
		do {
			veh_counter++;
		} while ((v = v->Next()) != nullptr);

		if (!Vehicle::CanAllocateItem(veh_counter)) {
			return { CommandCost(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME), INVALID_VEHICLE };
		}
	}

	v = v_front;

	VehicleID new_veh_id = INVALID_VEHICLE;
	do {
		if (v->type == VEH_TRAIN && Train::From(v)->IsRearDualheaded()) {
			/* we build the rear ends of multiheaded trains with the front ones */
			continue;
		}

		/* In case we're building a multi headed vehicle and the maximum number of
		 * vehicles is almost reached (e.g. max trains - 1) not all vehicles would
		 * be cloned. When the non-primary engines were build they were seen as
		 * 'new' vehicles whereas they would immediately be joined with a primary
		 * engine. This caused the vehicle to be not build as 'the limit' had been
		 * reached, resulting in partially build vehicles and such. */
		DoCommandFlag build_flags = flags;
		if ((flags & DC_EXEC) && !v->IsPrimaryVehicle()) build_flags |= DC_AUTOREPLACE;

		CommandCost cost;
		std::tie(cost, new_veh_id, std::ignore, std::ignore, std::ignore) = Command<CMD_BUILD_VEHICLE>::Do(build_flags, tile, v->engine_type, false, CT_INVALID, INVALID_CLIENT_ID);

		if (cost.Failed()) {
			/* Can't build a part, then sell the stuff we already made; clear up the mess */
			if (w_front != nullptr) Command<CMD_SELL_VEHICLE>::Do(flags, w_front->index, true, false, INVALID_CLIENT_ID);
			return { cost, INVALID_VEHICLE };
		}

		total_cost.AddCost(cost);

		if (flags & DC_EXEC) {
			w = Vehicle::Get(new_veh_id);

			if (v->type == VEH_TRAIN && HasBit(Train::From(v)->flags, VRF_REVERSE_DIRECTION)) {
				SetBit(Train::From(w)->flags, VRF_REVERSE_DIRECTION);
			}

			if (v->type == VEH_TRAIN && !v->IsFrontEngine()) {
				/* this s a train car
				 * add this unit to the end of the train */
				CommandCost result = Command<CMD_MOVE_RAIL_VEHICLE>::Do(flags, w->index, w_rear->index, true);
				if (result.Failed()) {
					/* The train can't be joined to make the same consist as the original.
					 * Sell what we already made (clean up) and return an error.           */
					Command<CMD_SELL_VEHICLE>::Do(flags, w_front->index, true, false, INVALID_CLIENT_ID);
					Command<CMD_SELL_VEHICLE>::Do(flags, w->index,       true, false, INVALID_CLIENT_ID);
					return { result, INVALID_VEHICLE }; // return error and the message returned from CMD_MOVE_RAIL_VEHICLE
				}
			} else {
				/* this is a front engine or not a train. */
				w_front = w;
				w->service_interval = v->service_interval;
				w->SetServiceIntervalIsCustom(v->ServiceIntervalIsCustom());
				w->SetServiceIntervalIsPercent(v->ServiceIntervalIsPercent());
			}
			w_rear = w; // trains needs to know the last car in the train, so they can add more in next loop
		}
	} while (v->type == VEH_TRAIN && (v = v->GetNextVehicle()) != nullptr);

	if ((flags & DC_EXEC) && v_front->type == VEH_TRAIN) {
		/* for trains this needs to be the front engine due to the callback function */
		new_veh_id = w_front->index;
	}

	if (flags & DC_EXEC) {
		/* Cloned vehicles belong to the same group */
		Command<CMD_ADD_VEHICLE_GROUP>::Do(flags, v_front->group_id, w_front->index, false, VehicleListIdentifier{});
	}


	/* Take care of refitting. */
	w = w_front;
	v = v_front;

	/* Both building and refitting are influenced by newgrf callbacks, which
	 * makes it impossible to accurately estimate the cloning costs. In
	 * particular, it is possible for engines of the same type to be built with
	 * different numbers of articulated parts, so when refitting we have to
	 * loop over real vehicles first, and then the articulated parts of those
	 * vehicles in a different loop. */
	do {
		do {
			if (flags & DC_EXEC) {
				assert(w != nullptr);

				/* Find out what's the best sub type */
				byte subtype = GetBestFittingSubType(v, w, v->cargo_type);
				if (w->cargo_type != v->cargo_type || w->cargo_subtype != subtype) {
					CommandCost cost = std::get<0>(Command<CMD_REFIT_VEHICLE>::Do(flags, w->index, v->cargo_type, subtype, false, true, 0));
					if (cost.Succeeded()) total_cost.AddCost(cost);
				}

				if (w->IsGroundVehicle() && w->HasArticulatedPart()) {
					w = w->GetNextArticulatedPart();
				} else {
					break;
				}
			} else {
				const Engine *e = v->GetEngine();
				CargoID initial_cargo = (e->CanCarryCargo() ? e->GetDefaultCargoType() : (CargoID)CT_INVALID);

				if (v->cargo_type != initial_cargo && IsValidCargoID(initial_cargo)) {
					bool dummy;
					total_cost.AddCost(GetRefitCost(nullptr, v->engine_type, v->cargo_type, v->cargo_subtype, &dummy));
				}
			}

			if (v->IsGroundVehicle() && v->HasArticulatedPart()) {
				v = v->GetNextArticulatedPart();
			} else {
				break;
			}
		} while (v != nullptr);

		if ((flags & DC_EXEC) && v->type == VEH_TRAIN) w = w->GetNextVehicle();
	} while (v->type == VEH_TRAIN && (v = v->GetNextVehicle()) != nullptr);

	if (flags & DC_EXEC) {
		/*
		 * Set the orders of the vehicle. Cannot do it earlier as we need
		 * the vehicle refitted before doing this, otherwise the moved
		 * cargo types might not match (passenger vs non-passenger)
		 */
		CommandCost result = Command<CMD_CLONE_ORDER>::Do(flags, (share_orders ? CO_SHARE : CO_COPY), w_front->index, v_front->index);
		if (result.Failed()) {
			/* The vehicle has already been bought, so now it must be sold again. */
			Command<CMD_SELL_VEHICLE>::Do(flags, w_front->index, true, false, INVALID_CLIENT_ID);
			return { result, INVALID_VEHICLE };
		}

		/* Now clone the vehicle's name, if it has one. */
		if (!v_front->name.empty()) CloneVehicleName(v_front, w_front);

		/* Since we can't estimate the cost of cloning a vehicle accurately we must
		 * check whether the company has enough money manually. */
		if (!CheckCompanyHasMoney(total_cost)) {
			/* The vehicle has already been bought, so now it must be sold again. */
			Command<CMD_SELL_VEHICLE>::Do(flags, w_front->index, true, false, INVALID_CLIENT_ID);
			return { total_cost, INVALID_VEHICLE };
		}
	}

	return { total_cost, new_veh_id };
}

/**
 * Send all vehicles of type to depots
 * @param flags   the flags used for DoCommand()
 * @param service should the vehicles only get service in the depots
 * @param vli     identifier of the vehicle list
 * @return 0 for success and CMD_ERROR if no vehicle is able to go to depot
 */
static CommandCost SendAllVehiclesToDepot(DoCommandFlag flags, bool service, const VehicleListIdentifier &vli)
{
	VehicleList list;

	if (!GenerateVehicleSortList(&list, vli)) return CMD_ERROR;

	/* Send all the vehicles to a depot */
	bool had_success = false;
	for (uint i = 0; i < list.size(); i++) {
		const Vehicle *v = list[i];
		CommandCost ret = Command<CMD_SEND_VEHICLE_TO_DEPOT>::Do(flags, v->index, (service ? DepotCommand::Service : DepotCommand::None) | DepotCommand::DontCancel, {});

		if (ret.Succeeded()) {
			had_success = true;

			/* Return 0 if DC_EXEC is not set this is a valid goto depot command)
			 * In this case we know that at least one vehicle can be sent to a depot
			 * and we will issue the command. We can now safely quit the loop, knowing
			 * it will succeed at least once. With DC_EXEC we really need to send them to the depot */
			if (!(flags & DC_EXEC)) break;
		}
	}

	return had_success ? CommandCost() : CMD_ERROR;
}

/**
 * Send a vehicle to the depot.
 * @param flags for command type
 * @param veh_id vehicle ID to send to the depot
 * @param depot_cmd DEPOT_ flags (see vehicle_type.h)
 * @param vli VehicleListIdentifier.
 * @return the cost of this operation or an error
 */
CommandCost CmdSendVehicleToDepot(DoCommandFlag flags, VehicleID veh_id, DepotCommand depot_cmd, const VehicleListIdentifier &vli)
{
	if ((depot_cmd & DepotCommand::MassSend) != DepotCommand::None) {
		/* Mass goto depot requested */
		if (!vli.Valid()) return CMD_ERROR;
		return SendAllVehiclesToDepot(flags, (depot_cmd & DepotCommand::Service) != DepotCommand::None, vli);
	}

	Vehicle *v = Vehicle::GetIfValid(veh_id);
	if (v == nullptr) return CMD_ERROR;
	if (!v->IsPrimaryVehicle()) return CMD_ERROR;

	return v->SendToDepot(flags, depot_cmd);
}

/**
 * Give a custom name to your vehicle
 * @param flags type of operation
 * @param veh_id vehicle ID to name
 * @param text the new name or an empty string when resetting to the default
 * @return the cost of this operation or an error
 */
CommandCost CmdRenameVehicle(DoCommandFlag flags, VehicleID veh_id, const std::string &text)
{
	Vehicle *v = Vehicle::GetIfValid(veh_id);
	if (v == nullptr || !v->IsPrimaryVehicle()) return CMD_ERROR;

	CommandCost ret = CheckOwnership(v->owner);
	if (ret.Failed()) return ret;

	bool reset = text.empty();

	if (!reset) {
		if (Utf8StringLength(text) >= MAX_LENGTH_VEHICLE_NAME_CHARS) return CMD_ERROR;
		if (!(flags & DC_AUTOREPLACE) && !IsUniqueVehicleName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
	}

	if (flags & DC_EXEC) {
		if (reset) {
			v->name.clear();
		} else {
			v->name = text;
		}
		InvalidateWindowClassesData(GetWindowClassForVehicleType(v->type), 1);
		MarkWholeScreenDirty();
	}

	return CommandCost();
}


/**
 * Change the service interval of a vehicle
 * @param flags type of operation
 * @param veh_id vehicle ID that is being service-interval-changed
 * @param serv_int new service interval
 * @param is_custom service interval is custom flag
 * @param is_percent service interval is percentage flag
 * @return the cost of this operation or an error
 */
CommandCost CmdChangeServiceInt(DoCommandFlag flags, VehicleID veh_id, uint16_t serv_int, bool is_custom, bool is_percent)
{
	Vehicle *v = Vehicle::GetIfValid(veh_id);
	if (v == nullptr || !v->IsPrimaryVehicle()) return CMD_ERROR;

	CommandCost ret = CheckOwnership(v->owner);
	if (ret.Failed()) return ret;

	const Company *company = Company::Get(v->owner);
	is_percent = is_custom ? is_percent : company->settings.vehicle.servint_ispercent;

	if (is_custom) {
		if (serv_int != GetServiceIntervalClamped(serv_int, is_percent)) return CMD_ERROR;
	} else {
		serv_int = CompanyServiceInterval(company, v->type);
	}

	if (flags & DC_EXEC) {
		v->SetServiceInterval(serv_int);
		v->SetServiceIntervalIsCustom(is_custom);
		v->SetServiceIntervalIsPercent(is_percent);
		SetWindowDirty(WC_VEHICLE_DETAILS, v->index);
	}

	return CommandCost();
}