summaryrefslogtreecommitdiff
path: root/src/company_cmd.cpp
blob: 4c3449a281b3c80c804e168961ada5b97dca8af3 (plain)
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
/* $Id$ */

/*
 * 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 company_cmd.cpp Handling of companies. */

#include "stdafx.h"
#include "engine_base.h"
#include "company_base.h"
#include "company_func.h"
#include "company_gui.h"
#include "town.h"
#include "news_func.h"
#include "cmd_helper.h"
#include "command_func.h"
#include "network/network.h"
#include "network/network_func.h"
#include "network/network_base.h"
#include "ai/ai.hpp"
#include "company_manager_face.h"
#include "window_func.h"
#include "strings_func.h"
#include "gfx_func.h"
#include "date_func.h"
#include "sound_func.h"
#include "rail.h"
#include "core/pool_func.hpp"
#include "settings_func.h"
#include "vehicle_base.h"
#include "vehicle_func.h"
#include "sprite.h"

#include "table/strings.h"

CompanyByte _local_company;   ///< Company controlled by the human player at this client. Can also be #COMPANY_SPECTATOR.
CompanyByte _current_company; ///< Company currently doing an action.
/* NOSAVE: can be determined from company structs */
Colours _company_colours[MAX_COMPANIES];
CompanyManagerFace _company_manager_face; ///< for company manager face storage in openttd.cfg
uint _next_competitor_start;              ///< the number of ticks before the next AI is started
uint _cur_company_tick_index;             ///< used to generate a name for one company that doesn't have a name yet per tick

CompanyPool _company_pool("Company");
INSTANTIATE_POOL_METHODS(Company)

Company::Company(uint16 name_1, bool is_ai)
{
	this->name_1 = name_1;
	this->location_of_HQ = INVALID_TILE;
	this->is_ai = is_ai;
	for (uint j = 0; j < 4; j++) this->share_owners[j] = COMPANY_SPECTATOR;
	InvalidateWindowData(WC_PERFORMANCE_DETAIL, 0, INVALID_COMPANY);
}

Company::~Company()
{
	free(this->num_engines);

	if (CleaningPool()) return;

	DeleteCompanyWindows(this->index);
}

/**
 * Invalidating some stuff after removing item from the pool.
 * @param index index of deleted item
 */
void Company::PostDestructor(size_t index)
{
	InvalidateWindowData(WC_GRAPH_LEGEND, 0, (int)index);
	InvalidateWindowData(WC_PERFORMANCE_DETAIL, 0, (int)index);
	InvalidateWindowData(WC_COMPANY_LEAGUE, 0, 0);
	/* If the currently shown error message has this company in it, then close it. */
	InvalidateWindowData(WC_ERRMSG, 0);
}

/**
 * Sets the local company and updates the settings that are set on a
 * per-company basis to reflect the core's state in the GUI.
 * @param new_company the new company
 * @pre Company::IsValidID(new_company) || new_company == COMPANY_SPECTATOR || new_company == OWNER_NONE
 */
void SetLocalCompany(CompanyID new_company)
{
	/* company could also be COMPANY_SPECTATOR or OWNER_NONE */
	assert(Company::IsValidID(new_company) || new_company == COMPANY_SPECTATOR || new_company == OWNER_NONE);

#ifdef ENABLE_NETWORK
	/* Delete the chat window, if you were team chatting. */
	InvalidateWindowData(WC_SEND_NETWORK_MSG, DESTTYPE_TEAM, _local_company);
#endif

	assert(IsLocalCompany());

	_current_company = _local_company = new_company;

	/* Delete any construction windows... */
	DeleteConstructionWindows();

	/* ... and redraw the whole screen. */
	MarkWholeScreenDirty();
}

uint16 GetDrawStringCompanyColour(CompanyID company)
{
	/* Get the colour for DrawString-subroutines which matches the colour
	 * of the company */
	if (!Company::IsValidID(company)) return _colour_gradient[COLOUR_WHITE][4] | IS_PALETTE_COLOUR;
	return (_colour_gradient[_company_colours[company]][4]) | IS_PALETTE_COLOUR;
}

void DrawCompanyIcon(CompanyID c, int x, int y)
{
	DrawSprite(SPR_COMPANY_ICON, COMPANY_SPRITE_COLOUR(c), x, y);
}

/**
 * Checks whether a company manager's face is a valid encoding.
 * Unused bits are not enforced to be 0.
 * @param cmf the fact to check
 * @return true if and only if the face is valid
 */
bool IsValidCompanyManagerFace(CompanyManagerFace cmf)
{
	if (!AreCompanyManagerFaceBitsValid(cmf, CMFV_GEN_ETHN, GE_WM)) return false;

	GenderEthnicity ge   = (GenderEthnicity)GetCompanyManagerFaceBits(cmf, CMFV_GEN_ETHN, GE_WM);
	bool has_moustache   = !HasBit(ge, GENDER_FEMALE) && GetCompanyManagerFaceBits(cmf, CMFV_HAS_MOUSTACHE,   ge) != 0;
	bool has_tie_earring = !HasBit(ge, GENDER_FEMALE) || GetCompanyManagerFaceBits(cmf, CMFV_HAS_TIE_EARRING, ge) != 0;
	bool has_glasses     = GetCompanyManagerFaceBits(cmf, CMFV_HAS_GLASSES, ge) != 0;

	if (!AreCompanyManagerFaceBitsValid(cmf, CMFV_EYE_COLOUR, ge)) return false;
	for (CompanyManagerFaceVariable cmfv = CMFV_CHEEKS; cmfv < CMFV_END; cmfv++) {
		switch (cmfv) {
			case CMFV_MOUSTACHE:   if (!has_moustache)   continue; break;
			case CMFV_LIPS:        // FALL THROUGH
			case CMFV_NOSE:        if (has_moustache)    continue; break;
			case CMFV_TIE_EARRING: if (!has_tie_earring) continue; break;
			case CMFV_GLASSES:     if (!has_glasses)     continue; break;
			default: break;
		}
		if (!AreCompanyManagerFaceBitsValid(cmf, cmfv, ge)) return false;
	}

	return true;
}

void InvalidateCompanyWindows(const Company *company)
{
	CompanyID cid = company->index;

	if (cid == _local_company) SetWindowDirty(WC_STATUS_BAR, 0);
	SetWindowDirty(WC_FINANCES, cid);
}

/**
 * Verify whether the company can pay the bill.
 * @param cost [inout] Money to pay, is changed to an error if the company does not have enough money.
 * @return Function returns \c true if the company has enough money, else it returns \c false.
 */
bool CheckCompanyHasMoney(CommandCost &cost)
{
	if (cost.GetCost() > 0) {
		const Company *c = Company::GetIfValid(_current_company);
		if (c != NULL && cost.GetCost() > c->money) {
			SetDParam(0, cost.GetCost());
			cost.MakeError(STR_ERROR_NOT_ENOUGH_CASH_REQUIRES_CURRENCY);
			return false;
		}
	}
	return true;
}

static void SubtractMoneyFromAnyCompany(Company *c, CommandCost cost)
{
	if (cost.GetCost() == 0) return;
	assert(cost.GetExpensesType() != INVALID_EXPENSES);

	c->money -= cost.GetCost();
	c->yearly_expenses[0][cost.GetExpensesType()] += cost.GetCost();

	if (HasBit(1 << EXPENSES_TRAIN_INC    |
	           1 << EXPENSES_ROADVEH_INC  |
	           1 << EXPENSES_AIRCRAFT_INC |
	           1 << EXPENSES_SHIP_INC, cost.GetExpensesType())) {
		c->cur_economy.income -= cost.GetCost();
	} else if (HasBit(1 << EXPENSES_TRAIN_RUN    |
	                  1 << EXPENSES_ROADVEH_RUN  |
	                  1 << EXPENSES_AIRCRAFT_RUN |
	                  1 << EXPENSES_SHIP_RUN     |
	                  1 << EXPENSES_PROPERTY     |
	                  1 << EXPENSES_LOAN_INT, cost.GetExpensesType())) {
		c->cur_economy.expenses -= cost.GetCost();
	}

	InvalidateCompanyWindows(c);
}

void SubtractMoneyFromCompany(CommandCost cost)
{
	Company *c = Company::GetIfValid(_current_company);
	if (c != NULL) SubtractMoneyFromAnyCompany(c, cost);
}

void SubtractMoneyFromCompanyFract(CompanyID company, CommandCost cst)
{
	Company *c = Company::Get(company);
	byte m = c->money_fraction;
	Money cost = cst.GetCost();

	c->money_fraction = m - (byte)cost;
	cost >>= 8;
	if (c->money_fraction > m) cost++;
	if (cost != 0) SubtractMoneyFromAnyCompany(c, CommandCost(cst.GetExpensesType(), cost));
}

/**
 * Set the right DParams to get the name of an owner.
 * @param owner the owner to get the name of.
 * @param tile  optional tile to get the right town.
 * @pre if tile == 0, then owner can't be OWNER_TOWN.
 */
void GetNameOfOwner(Owner owner, TileIndex tile)
{
	SetDParam(2, owner);

	if (owner != OWNER_TOWN) {
		if (!Company::IsValidID(owner)) {
			SetDParam(0, STR_COMPANY_SOMEONE);
		} else {
			SetDParam(0, STR_COMPANY_NAME);
			SetDParam(1, owner);
		}
	} else {
		assert(tile != 0);
		const Town *t = ClosestTownFromTile(tile, UINT_MAX);

		SetDParam(0, STR_TOWN_NAME);
		SetDParam(1, t->index);
	}
}


/**
 * Check whether the current owner owns something.
 * If that isn't the case an appropriate error will be given.
 * @param owner the owner of the thing to check.
 * @param tile  optional tile to get the right town.
 * @pre if tile == 0 then the owner can't be OWNER_TOWN.
 * @return A succeeded command iff it's owned by the current company, else a failed command.
 */
CommandCost CheckOwnership(Owner owner, TileIndex tile)
{
	assert(owner < OWNER_END);
	assert(owner != OWNER_TOWN || tile != 0);

	if (owner == _current_company) return CommandCost();

	GetNameOfOwner(owner, tile);
	return_cmd_error(STR_ERROR_OWNED_BY);
}

/**
 * Check whether the current owner owns the stuff on
 * the given tile.  If that isn't the case an
 * appropriate error will be given.
 * @param tile the tile to check.
 * @return A succeeded command iff it's owned by the current company, else a failed command.
 */
CommandCost CheckTileOwnership(TileIndex tile)
{
	Owner owner = GetTileOwner(tile);

	assert(owner < OWNER_END);

	if (owner == _current_company) return CommandCost();

	/* no need to get the name of the owner unless we're the local company (saves some time) */
	if (IsLocalCompany()) GetNameOfOwner(owner, tile);
	return_cmd_error(STR_ERROR_OWNED_BY);
}

static void GenerateCompanyName(Company *c)
{
	TileIndex tile;
	Town *t;
	StringID str;
	Company *cc;
	uint32 strp;
	/* Reserve space for extra unicode character. We need to do this to be able
	 * to detect too long company name. */
	char buffer[MAX_LENGTH_COMPANY_NAME_BYTES + MAX_CHAR_LENGTH];

	if (c->name_1 != STR_SV_UNNAMED) return;

	tile = c->last_build_coordinate;
	if (tile == 0) return;

	t = ClosestTownFromTile(tile, UINT_MAX);

	if (t->name == NULL && IsInsideMM(t->townnametype, SPECSTR_TOWNNAME_START, SPECSTR_TOWNNAME_LAST + 1)) {
		str = t->townnametype - SPECSTR_TOWNNAME_START + SPECSTR_PLAYERNAME_START;
		strp = t->townnameparts;

verify_name:;
		/* No companies must have this name already */
		FOR_ALL_COMPANIES(cc) {
			if (cc->name_1 == str && cc->name_2 == strp) goto bad_town_name;
		}

		GetString(buffer, str, lastof(buffer));
		if (strlen(buffer) >= MAX_LENGTH_COMPANY_NAME_BYTES) goto bad_town_name;

set_name:;
		c->name_1 = str;
		c->name_2 = strp;

		MarkWholeScreenDirty();

		if (c->is_ai) {
			CompanyNewsInformation *cni = MallocT<CompanyNewsInformation>(1);
			cni->FillData(c);
			SetDParam(0, STR_NEWS_COMPANY_LAUNCH_TITLE);
			SetDParam(1, STR_NEWS_COMPANY_LAUNCH_DESCRIPTION);
			SetDParamStr(2, cni->company_name);
			SetDParam(3, t->index);
			AddNewsItem(STR_MESSAGE_NEWS_FORMAT, NS_COMPANY_NEW, NR_TILE, c->last_build_coordinate, NR_NONE, UINT32_MAX, cni);
		}
		AI::BroadcastNewEvent(new AIEventCompanyNew(c->index), c->index);
		return;
	}
bad_town_name:;

	if (c->president_name_1 == SPECSTR_PRESIDENT_NAME) {
		str = SPECSTR_ANDCO_NAME;
		strp = c->president_name_2;
		goto set_name;
	} else {
		str = SPECSTR_ANDCO_NAME;
		strp = Random();
		goto verify_name;
	}
}

static const byte _colour_sort[COLOUR_END] = {2, 2, 3, 2, 3, 2, 3, 2, 3, 2, 2, 2, 3, 1, 1, 1};
static const Colours _similar_colour[COLOUR_END][2] = {
	{ COLOUR_BLUE,       COLOUR_LIGHT_BLUE }, // COLOUR_DARK_BLUE
	{ COLOUR_GREEN,      COLOUR_DARK_GREEN }, // COLOUR_PALE_GREEN
	{ INVALID_COLOUR,    INVALID_COLOUR    }, // COLOUR_PINK
	{ COLOUR_ORANGE,     INVALID_COLOUR    }, // COLOUR_YELLOW
	{ INVALID_COLOUR,    INVALID_COLOUR    }, // COLOUR_RED
	{ COLOUR_DARK_BLUE,  COLOUR_BLUE       }, // COLOUR_LIGHT_BLUE
	{ COLOUR_PALE_GREEN, COLOUR_DARK_GREEN }, // COLOUR_GREEN
	{ COLOUR_PALE_GREEN, COLOUR_GREEN      }, // COLOUR_DARK_GREEN
	{ COLOUR_DARK_BLUE,  COLOUR_LIGHT_BLUE }, // COLOUR_BLUE
	{ COLOUR_BROWN,      COLOUR_ORANGE     }, // COLOUR_CREAM
	{ COLOUR_PURPLE,     INVALID_COLOUR    }, // COLOUR_MAUVE
	{ COLOUR_MAUVE,      INVALID_COLOUR    }, // COLOUR_PURPLE
	{ COLOUR_YELLOW,     COLOUR_CREAM      }, // COLOUR_ORANGE
	{ COLOUR_CREAM,      INVALID_COLOUR    }, // COLOUR_BROWN
	{ COLOUR_WHITE,      INVALID_COLOUR    }, // COLOUR_GREY
	{ COLOUR_GREY,       INVALID_COLOUR    }, // COLOUR_WHITE
};

static Colours GenerateCompanyColour()
{
	Colours colours[COLOUR_END];

	/* Initialize array */
	for (uint i = 0; i < COLOUR_END; i++) colours[i] = (Colours)i;

	/* And randomize it */
	for (uint i = 0; i < 100; i++) {
		uint r = Random();
		Swap(colours[GB(r, 0, 4)], colours[GB(r, 4, 4)]);
	}

	/* Bubble sort it according to the values in table 1 */
	for (uint i = 0; i < COLOUR_END; i++) {
		for (uint j = 1; j < COLOUR_END; j++) {
			if (_colour_sort[colours[j - 1]] < _colour_sort[colours[j]]) {
				Swap(colours[j - 1], colours[j]);
			}
		}
	};

	/* Move the colours that look similar to each company's colour to the side */
	Company *c;
	FOR_ALL_COMPANIES(c) {
		Colours pcolour = (Colours)c->colour;

		for (uint i = 0; i < COLOUR_END; i++) {
			if (colours[i] == pcolour) {
				colours[i] = INVALID_COLOUR;
				break;
			}
		}

		for (uint j = 0; j < 2; j++) {
			Colours similar = _similar_colour[pcolour][j];
			if (similar == INVALID_COLOUR) break;

			for (uint i = 1; i < COLOUR_END; i++) {
				if (colours[i - 1] == similar) Swap(colours[i - 1], colours[i]);
			}
		}
	}

	/* Return the first available colour */
	for (uint i = 0; i < COLOUR_END; i++) {
		if (colours[i] != INVALID_COLOUR) return colours[i];
	}

	NOT_REACHED();
}

static void GeneratePresidentName(Company *c)
{
	for (;;) {
restart:;
		c->president_name_2 = Random();
		c->president_name_1 = SPECSTR_PRESIDENT_NAME;

		/* Reserve space for extra unicode character. We need to do this to be able
		 * to detect too long president name. */
		char buffer[MAX_LENGTH_PRESIDENT_NAME_BYTES + MAX_CHAR_LENGTH];
		SetDParam(0, c->index);
		GetString(buffer, STR_PRESIDENT_NAME, lastof(buffer));
		if (strlen(buffer) >= MAX_LENGTH_PRESIDENT_NAME_BYTES) continue;

		Company *cc;
		FOR_ALL_COMPANIES(cc) {
			if (c != cc) {
				/* Reserve extra space so even overlength president names can be compared. */
				char buffer2[MAX_LENGTH_PRESIDENT_NAME_BYTES + MAX_CHAR_LENGTH];
				SetDParam(0, cc->index);
				GetString(buffer2, STR_PRESIDENT_NAME, lastof(buffer2));
				if (strcmp(buffer2, buffer) == 0) goto restart;
			}
		}
		return;
	}
}

void ResetCompanyLivery(Company *c)
{
	for (LiveryScheme scheme = LS_BEGIN; scheme < LS_END; scheme++) {
		c->livery[scheme].in_use  = false;
		c->livery[scheme].colour1 = c->colour;
		c->livery[scheme].colour2 = c->colour;
	}
}

/**
 * Create a new company and sets all company variables default values
 *
 * @param is_ai is an AI company?
 * @param company CompanyID to use for the new company
 * @return the company struct
 */
Company *DoStartupNewCompany(bool is_ai, CompanyID company = INVALID_COMPANY)
{
	if (!Company::CanAllocateItem()) return NULL;

	/* we have to generate colour before this company is valid */
	Colours colour = GenerateCompanyColour();

	Company *c;
	if (company == INVALID_COMPANY) {
		c = new Company(STR_SV_UNNAMED, is_ai);
	} else {
		if (Company::IsValidID(company)) return NULL;
		c = new (company) Company(STR_SV_UNNAMED, is_ai);
	}

	c->colour = colour;

	ResetCompanyLivery(c);
	_company_colours[c->index] = (Colours)c->colour;

	c->money = c->current_loan = 100000;

	c->share_owners[0] = c->share_owners[1] = c->share_owners[2] = c->share_owners[3] = INVALID_OWNER;

	c->avail_railtypes = GetCompanyRailtypes(c->index);
	c->avail_roadtypes = GetCompanyRoadtypes(c->index);
	c->inaugurated_year = _cur_year;
	RandomCompanyManagerFaceBits(c->face, (GenderEthnicity)Random(), false); // create a random company manager face

	SetDefaultCompanySettings(c->index);

	GeneratePresidentName(c);

	SetWindowDirty(WC_GRAPH_LEGEND, 0);
	SetWindowDirty(WC_TOOLBAR_MENU, 0);
	SetWindowDirty(WC_CLIENT_LIST, 0);

	if (is_ai && (!_networking || _network_server)) AI::StartNew(c->index);

	c->num_engines = CallocT<uint16>(Engine::GetPoolSize());

	return c;
}

void StartupCompanies()
{
	_next_competitor_start = 0;
}

#ifdef ENABLE_AI
static void MaybeStartNewCompany()
{
#ifdef ENABLE_NETWORK
	if (_networking && Company::GetNumItems() >= _settings_client.network.max_companies) return;
#endif /* ENABLE_NETWORK */

	Company *c;

	/* count number of competitors */
	uint n = 0;
	FOR_ALL_COMPANIES(c) {
		if (c->is_ai) n++;
	}

	if (n < (uint)_settings_game.difficulty.max_no_competitors) {
		/* Send a command to all clients to start up a new AI.
		 * Works fine for Multiplayer and Singleplayer */
		DoCommandP(0, 1, INVALID_COMPANY, CMD_COMPANY_CTRL);
	}
}
#endif /* ENABLE_AI */

void InitializeCompanies()
{
	_company_pool.CleanPool();
	_cur_company_tick_index = 0;
}

/**
 * Handle the bankruptcy take over of a company.
 * Companies going bankrupt will ask the other companies in order of their
 * performance rating, so better performing companies get the 'do you want to
 * merge with Y' question earlier. The question will then stay till either the
 * company has gone bankrupt or got merged with a company.
 *
 * @param c the company that is going bankrupt.
 */
static void HandleBankruptcyTakeover(Company *c)
{
	/* Amount of time out for each company to take over a company;
	 * Timeout is a quarter (3 months of 30 days) divided over the
	 * number of companies. The minimum number of days in a quarter
	 * is 90: 31 in January, 28 in February and 31 in March.
	 * Note that the company going bankrupt can't buy itself. */
	static const int TAKE_OVER_TIMEOUT = 3 * 30 * DAY_TICKS / (MAX_COMPANIES - 1);

	assert(c->bankrupt_asked != 0);

	/* We're currently asking some company to buy 'us' */
	if (c->bankrupt_timeout != 0) {
		c->bankrupt_timeout -= MAX_COMPANIES;
		if (c->bankrupt_timeout > 0) return;
		c->bankrupt_timeout = 0;

		return;
	}

	/* Did we ask everyone for bankruptcy? If so, bail out. */
	if (c->bankrupt_asked == MAX_UVALUE(CompanyMask)) return;

	Company *c2, *best = NULL;
	int32 best_performance = -1;

	/* Ask the company with the highest performance history first */
	FOR_ALL_COMPANIES(c2) {
		if (c2->bankrupt_asked == 0 && // Don't ask companies going bankrupt themselves
				!HasBit(c->bankrupt_asked, c2->index) &&
				best_performance < c2->old_economy[1].performance_history) {
			best_performance = c2->old_economy[1].performance_history;
			best = c2;
		}
	}

	/* Asked all companies? */
	if (best_performance == -1) {
		c->bankrupt_asked = MAX_UVALUE(CompanyMask);
		return;
	}

	SetBit(c->bankrupt_asked, best->index);

	c->bankrupt_timeout = TAKE_OVER_TIMEOUT;
	if (best->is_ai) {
		AI::NewEvent(best->index, new AIEventCompanyAskMerger(c->index, ClampToI32(c->bankrupt_value)));
	} else if (IsInteractiveCompany(best->index)) {
		ShowBuyCompanyDialog(c->index);
	}
}

void OnTick_Companies()
{
	if (_game_mode == GM_EDITOR) return;

	Company *c = Company::GetIfValid(_cur_company_tick_index);
	if (c != NULL) {
		if (c->name_1 != 0) GenerateCompanyName(c);
		if (c->bankrupt_asked != 0) HandleBankruptcyTakeover(c);
	}

#ifdef ENABLE_AI
	if (_next_competitor_start == 0) {
		_next_competitor_start = AI::GetStartNextTime() * DAY_TICKS;
	}

	if (AI::CanStartNew() && _game_mode != GM_MENU && --_next_competitor_start == 0) {
		MaybeStartNewCompany();
	}
#endif /* ENABLE_AI */

	_cur_company_tick_index = (_cur_company_tick_index + 1) % MAX_COMPANIES;
}

void CompaniesYearlyLoop()
{
	Company *c;

	/* Copy statistics */
	FOR_ALL_COMPANIES(c) {
		memmove(&c->yearly_expenses[1], &c->yearly_expenses[0], sizeof(c->yearly_expenses) - sizeof(c->yearly_expenses[0]));
		memset(&c->yearly_expenses[0], 0, sizeof(c->yearly_expenses[0]));
		SetWindowDirty(WC_FINANCES, c->index);
	}

	if (_settings_client.gui.show_finances && _local_company != COMPANY_SPECTATOR) {
		ShowCompanyFinances(_local_company);
		c = Company::Get(_local_company);
		if (c->num_valid_stat_ent > 5 && c->old_economy[0].performance_history < c->old_economy[4].performance_history) {
			SndPlayFx(SND_01_BAD_YEAR);
		} else {
			SndPlayFx(SND_00_GOOD_YEAR);
		}
	}
}

/**
 * Fill the CompanyNewsInformation struct with the required data.
 * @param c the current company.
 * @param other the other company.
 */
void CompanyNewsInformation::FillData(const Company *c, const Company *other)
{
	SetDParam(0, c->index);
	GetString(this->company_name, STR_COMPANY_NAME, lastof(this->company_name));

	if (other == NULL) {
		*this->other_company_name = '\0';
	} else {
		SetDParam(0, other->index);
		GetString(this->other_company_name, STR_COMPANY_NAME, lastof(this->other_company_name));
		c = other;
	}

	SetDParam(0, c->index);
	GetString(this->president_name, STR_PRESIDENT_NAME_MANAGER, lastof(this->president_name));

	this->colour = c->colour;
	this->face = c->face;

}

/** Control the companies: add, delete, etc.
 * @param tile unused
 * @param flags operation to perform
 * @param p1 various functionality
 * - p1 = 0 - create a new company, Which company (network) it will be is in p2
 * - p1 = 1 - create a new AI company
 * - p1 = 2 - delete a company. Company is identified by p2
 * @param p2 various functionality, dictated by p1
 * - p1 = 0 - ClientID of the newly created client
 * - p1 = 1 - CompanyID to start AI (INVALID_COMPANY for first available)
 * - p1 = 2 - CompanyID of the that is getting deleted
 * @param text unused
 * @return the cost of this operation or an error
 *
 * @todo In the case of p1=0, create new company, the clientID of the new client is in parameter
 * p2. This parameter is passed in at function DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_COMMAND)
 * on the server itself. First of all this is unbelievably ugly; second of all, well,
 * it IS ugly! <b>Someone fix this up :)</b> So where to fix?@n
 * @arg - network_server.c:838 DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_COMMAND)@n
 * @arg - network_client.c:536 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_MAP) from where the map has been received
 */
CommandCost CmdCompanyCtrl(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
	InvalidateWindowData(WC_COMPANY_LEAGUE, 0, 0);

	switch (p1) {
		case 0: { // Create a new company
			/* This command is only executed in a multiplayer game */
			if (!_networking) return CMD_ERROR;

#ifdef ENABLE_NETWORK

			/* Joining Client:
			 * _local_company: COMPANY_SPECTATOR
			 * cid = clientid
			 *
			 * Other client(s)/server:
			 * _local_company: what they play as
			 * cid = requested company/company of joining client */
			ClientID cid = (ClientID)p2;

			/* Has the network client a correct ClientIndex? */
			if (!(flags & DC_EXEC)) return CommandCost();
			NetworkClientInfo *ci = NetworkFindClientInfoFromClientID(cid);
			if (ci == NULL) return CommandCost();

			/* Delete multiplayer progress bar */
			DeleteWindowById(WC_NETWORK_STATUS_WINDOW, 0);

			Company *c = DoStartupNewCompany(false);

			/* A new company could not be created, revert to being a spectator */
			if (c == NULL) {
				if (_network_server) {
					ci->client_playas = COMPANY_SPECTATOR;
					NetworkUpdateClientInfo(ci->client_id);
				}
				break;
			}

			/* This is the client (or non-dedicated server) who wants a new company */
			if (cid == _network_own_client_id) {
				assert(_local_company == COMPANY_SPECTATOR);
				SetLocalCompany(c->index);
				if (!StrEmpty(_settings_client.network.default_company_pass)) {
					NetworkChangeCompanyPassword(_settings_client.network.default_company_pass);
				}

				/* Now that we have a new company, broadcast our company settings to
				 * all clients so everything is in sync */
				SyncCompanySettings();

				MarkWholeScreenDirty();
			}

			if (_network_server) {
				/* XXX - UGLY! p2 (pid) is mis-used to fetch the client-id, done at
				 * server side in network_server.c:838, function
				 * DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_COMMAND) */
				CompanyID old_playas = ci->client_playas;
				ci->client_playas = c->index;
				NetworkUpdateClientInfo(ci->client_id);

				if (Company::IsValidID(ci->client_playas)) {
					_network_company_states[c->index].months_empty = 0;
					_network_company_states[c->index].password[0] = '\0';
					NetworkServerUpdateCompanyPassworded(ci->client_playas, false);

					/* XXX - When a client joins, we automatically set its name to the
					 * client's name (for some reason). As it stands now only the server
					 * knows the client's name, so it needs to send out a "broadcast" to
					 * do this. To achieve this we send a network command. However, it
					 * uses _local_company to execute the command as.  To prevent abuse
					 * (eg. only yourself can change your name/company), we 'cheat' by
					 * impersonation _local_company as the server. Not the best solution;
					 * but it works.
					 * TODO: Perhaps this could be improved by when the client is ready
					 * with joining to let it send itself the command, and not the server?
					 * For example in network_client.c:534? */
					NetworkSend_Command(0, 0, 0, CMD_RENAME_PRESIDENT, NULL, ci->client_name, ci->client_playas);
				}

				/* Announce new company on network, if the client was a SPECTATOR before */
				if (old_playas == COMPANY_SPECTATOR) {
					NetworkServerSendChat(NETWORK_ACTION_COMPANY_NEW, DESTTYPE_BROADCAST, 0, "", ci->client_id, ci->client_playas + 1);
				}
			}
#endif /* ENABLE_NETWORK */
		} break;

		case 1: // Make a new AI company
			if (!(flags & DC_EXEC)) return CommandCost();

			if (p2 != INVALID_COMPANY && (p2 >= MAX_COMPANIES || Company::IsValidID(p2))) return CMD_ERROR;
			DoStartupNewCompany(true, (CompanyID)p2);
			break;

		case 2: { // Delete a company
			Company *c = Company::GetIfValid(p2);
			if (c == NULL) return CMD_ERROR;

			if (!(flags & DC_EXEC)) return CommandCost();

			/* Delete any open window of the company */
			DeleteCompanyWindows(c->index);
			CompanyNewsInformation *cni = MallocT<CompanyNewsInformation>(1);
			cni->FillData(c);

			/* Show the bankrupt news */
			SetDParam(0, STR_NEWS_COMPANY_BANKRUPT_TITLE);
			SetDParam(1, STR_NEWS_COMPANY_BANKRUPT_DESCRIPTION);
			SetDParamStr(2, cni->company_name);
			AddCompanyNewsItem(STR_MESSAGE_NEWS_FORMAT, NS_COMPANY_BANKRUPT, cni);

			/* Remove the company */
			ChangeOwnershipOfCompanyItems(c->index, INVALID_OWNER);
			if (c->is_ai) AI::Stop(c->index);

			CompanyID c_index = c->index;
			delete c;
			AI::BroadcastNewEvent(new AIEventCompanyBankrupt(c_index));
		} break;

		default: return CMD_ERROR;
	}

	return CommandCost();
}

/** Change the company manager's face.
 * @param tile unused
 * @param flags operation to perform
 * @param p1 unused
 * @param p2 face bitmasked
 * @param text unused
 * @return the cost of this operation or an error
 */
CommandCost CmdSetCompanyManagerFace(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
	CompanyManagerFace cmf = (CompanyManagerFace)p2;

	if (!IsValidCompanyManagerFace(cmf)) return CMD_ERROR;

	if (flags & DC_EXEC) {
		Company::Get(_current_company)->face = cmf;
		MarkWholeScreenDirty();
	}
	return CommandCost();
}

/** Change the company's company-colour
 * @param tile unused
 * @param flags operation to perform
 * @param p1 bitstuffed:
 * p1 bits 0-7 scheme to set
 * p1 bits 8-9 set in use state or first/second colour
 * @param p2 new colour for vehicles, property, etc.
 * @param text unused
 * @return the cost of this operation or an error
 */
CommandCost CmdSetCompanyColour(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
	Colours colour = Extract<Colours, 0, 4>(p2);
	LiveryScheme scheme = Extract<LiveryScheme, 0, 8>(p1);
	byte state = GB(p1, 8, 2);

	if (scheme >= LS_END || state >= 3 || colour == INVALID_COLOUR) return CMD_ERROR;

	Company *c = Company::Get(_current_company);

	/* Ensure no two companies have the same primary colour */
	if (scheme == LS_DEFAULT && state == 0) {
		const Company *cc;
		FOR_ALL_COMPANIES(cc) {
			if (cc != c && cc->colour == colour) return CMD_ERROR;
		}
	}

	if (flags & DC_EXEC) {
		switch (state) {
			case 0:
				c->livery[scheme].colour1 = colour;

				/* If setting the first colour of the default scheme, adjust the
				 * original and cached company colours too. */
				if (scheme == LS_DEFAULT) {
					_company_colours[_current_company] = colour;
					c->colour = colour;
				}
				break;

			case 1:
				c->livery[scheme].colour2 = colour;
				break;

			case 2:
				c->livery[scheme].in_use = colour != 0;

				/* Now handle setting the default scheme's in_use flag.
				 * This is different to the other schemes, as it signifies if any
				 * scheme is active at all. If this flag is not set, then no
				 * processing of vehicle types occurs at all, and only the default
				 * colours will be used. */

				/* If enabling a scheme, set the default scheme to be in use too */
				if (colour != 0) {
					c->livery[LS_DEFAULT].in_use = true;
					break;
				}

				/* Else loop through all schemes to see if any are left enabled.
				 * If not, disable the default scheme too. */
				c->livery[LS_DEFAULT].in_use = false;
				for (scheme = LS_DEFAULT; scheme < LS_END; scheme++) {
					if (c->livery[scheme].in_use) {
						c->livery[LS_DEFAULT].in_use = true;
						break;
					}
				}
				break;

			default:
				break;
		}
		ResetVehicleColourMap();
		MarkWholeScreenDirty();

		/* All graph related to companies use the company colour. */
		InvalidateWindowData(WC_INCOME_GRAPH, 0);
		InvalidateWindowData(WC_OPERATING_PROFIT, 0);
		InvalidateWindowData(WC_DELIVERED_CARGO, 0);
		InvalidateWindowData(WC_PERFORMANCE_HISTORY, 0);
		InvalidateWindowData(WC_COMPANY_VALUE, 0);

		/* Company colour data is indirectly cached. */
		Vehicle *v;
		FOR_ALL_VEHICLES(v) {
			if (v->owner == _current_company) v->InvalidateNewGRFCache();
		}
	}
	return CommandCost();
}

static bool IsUniqueCompanyName(const char *name)
{
	const Company *c;

	FOR_ALL_COMPANIES(c) {
		if (c->name != NULL && strcmp(c->name, name) == 0) return false;
	}

	return true;
}

/** Change the name of the company.
 * @param tile unused
 * @param flags operation to perform
 * @param p1 unused
 * @param p2 unused
 * @param text the new name or an empty string when resetting to the default
 * @return the cost of this operation or an error
 */
CommandCost CmdRenameCompany(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
	bool reset = StrEmpty(text);

	if (!reset) {
		if (strlen(text) >= MAX_LENGTH_COMPANY_NAME_BYTES) return CMD_ERROR;
		if (!IsUniqueCompanyName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
	}

	if (flags & DC_EXEC) {
		Company *c = Company::Get(_current_company);
		free(c->name);
		c->name = reset ? NULL : strdup(text);
		MarkWholeScreenDirty();
	}

	return CommandCost();
}

static bool IsUniquePresidentName(const char *name)
{
	const Company *c;

	FOR_ALL_COMPANIES(c) {
		if (c->president_name != NULL && strcmp(c->president_name, name) == 0) return false;
	}

	return true;
}

/** Change the name of the president.
 * @param tile unused
 * @param flags operation to perform
 * @param p1 unused
 * @param p2 unused
 * @param text the new name or an empty string when resetting to the default
 * @return the cost of this operation or an error
 */
CommandCost CmdRenamePresident(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
	bool reset = StrEmpty(text);

	if (!reset) {
		if (strlen(text) >= MAX_LENGTH_PRESIDENT_NAME_BYTES) return CMD_ERROR;
		if (!IsUniquePresidentName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
	}

	if (flags & DC_EXEC) {
		Company *c = Company::Get(_current_company);
		free(c->president_name);

		if (reset) {
			c->president_name = NULL;
		} else {
			c->president_name = strdup(text);

			if (c->name_1 == STR_SV_UNNAMED && c->name == NULL) {
				char buf[80];

				snprintf(buf, lengthof(buf), "%s Transport", text);
				DoCommand(0, 0, 0, DC_EXEC, CMD_RENAME_COMPANY, buf);
			}
		}

		MarkWholeScreenDirty();
	}

	return CommandCost();
}