1

/* $Id$ */

     2

     3

/** @file economy.cpp */

     4

     5

#include "stdafx.h"

     6

#include "openttd.h"

     7

#include "currency.h"

     8

#include "functions.h"

     9

#include "landscape.h"

    10

#include "table/strings.h"

    11

#include "table/sprites.h"

    12

#include "map.h"

    13

#include "news.h"

    14

#include "player.h"

    15

#include "station.h"

    16

#include "vehicle.h"

    17

#include "gfx.h"

    18

#include "command.h"

    19

#include "saveload.h"

    20

#include "economy.h"

    21

#include "industry.h"

    22

#include "town.h"

    23

#include "network/network.h"

    24

#include "sound.h"

    25

#include "engine.h"

    26

#include "network/network_data.h"

    27

#include "variables.h"

    28

#include "vehicle_gui.h"

    29

#include "ai/ai.h"

    30

#include "train.h"

    31

#include "roadveh.h"

    32

#include "aircraft.h"

    33

#include "newgrf_engine.h"

    34

#include "newgrf_sound.h"

    35

#include "newgrf_callbacks.h"

    36

#include "newgrf_industries.h"

    37

#include "newgrf_industrytiles.h"

    38

#include "unmovable.h"

    39

#include "date.h"

    40

#include "cargotype.h"

    41

#include "player_face.h"

    42

#include "group.h"

    44

    45

/**

    46

 * Multiply two integer values and shift the results to right.

    47

 *

    48

 * This function multiplies two integer values. The result is

    49

 * shifted by the amount of shift to right.

    50

 *

    51

 * @param a The first integer

    52

 * @param b The second integer

    53

 * @param shift The amount to shift the value to right.

    54

 * @return The shifted result

    55

 */

    56

static inline int32 BigMulS(const int32 a, const int32 b, const uint8 shift)

    57

{

    58

	return (int32)((int64)a * (int64)b >> shift);

    59

}

    60

    61

/**

    62

 * Multiply two unsigned integers and shift the results to right.

    63

 *

    64

 * This function multiplies two unsigned integers. The result is

    65

 * shifted by the amount of shift to right.

    66

 *

    67

 * @param a The first unsigned integer

    68

 * @param b The second unsigned integer

    69

 * @param shift The amount to shift the value to right.

    70

 * @return The shifted result

    71

 */

    72

static inline uint32 BigMulSU(const uint32 a, const uint32 b, const uint8 shift)

    73

{

    74

	return (uint32)((uint64)a * (uint64)b >> shift);

    75

}

    76

    77

/* Score info */

    78

const ScoreInfo _score_info[] = {

    79

	{ SCORE_VEHICLES,        120, 100 },

    80

	{ SCORE_STATIONS,         80, 100 },

    81

	{ SCORE_MIN_PROFIT,    10000, 100 },

    82

	{ SCORE_MIN_INCOME,    50000,  50 },

    83

	{ SCORE_MAX_INCOME,   100000, 100 },

    84

	{ SCORE_DELIVERED,     40000, 400 },

    85

	{ SCORE_CARGO,             8,  50 },

    86

	{ SCORE_MONEY,      10000000,  50 },

    87

	{ SCORE_LOAN,         250000,  50 },

    88

	{ SCORE_TOTAL,             0,   0 }

    89

};

    90

    91

int _score_part[MAX_PLAYERS][SCORE_END];

    92

    93

Money CalculateCompanyValue(const Player* p)

    94

{

    95

	PlayerID owner = p->index;

    96

	/* Do a little nasty by using CommandCost, so we can use the "overflow" protection of CommandCost */

    97

	Money value = 0;

    98

    99

	Station *st;

   100

	uint num = 0;

   101

   102

	FOR_ALL_STATIONS(st) {

   103

		if (st->owner == owner) num += CountBits(st->facilities);

   104

	}

   105

   106

	value += num * _price.station_value * 25;

   107

   108

	Vehicle *v;

   109

	FOR_ALL_VEHICLES(v) {

   110

		if (v->owner != owner) continue;

   111

   112

		if (v->type == VEH_TRAIN ||

   113

				v->type == VEH_ROAD ||

   114

				(v->type == VEH_AIRCRAFT && IsNormalAircraft(v)) ||

   115

				v->type == VEH_SHIP) {

   116

			value += v->value * 3 >> 1;

   117

		}

   118

	}

   119

   120

	/* Add real money value */

   121

	value -= p->current_loan;

   122

	value += p->player_money;

   123

   124

	return max(value, (Money)1);

   125

}

   126

   127

/** if update is set to true, the economy is updated with this score

   128

 *  (also the house is updated, should only be true in the on-tick event)

   129

 * @param update the economy with calculated score

   130

 * @param p player been evaluated

   131

 * @return actual score of this player

   132

 * */

   133

int UpdateCompanyRatingAndValue(Player *p, bool update)

   134

{

   135

	byte owner = p->index;

   136

	int score = 0;

   137

   138

	memset(_score_part[owner], 0, sizeof(_score_part[owner]));

   139

   140

/* Count vehicles */

   141

	{

   142

		Vehicle *v;

   143

		Money min_profit = 0;

   144

		bool min_profit_first = true;

   145

		uint num = 0;

   146

   147

		FOR_ALL_VEHICLES(v) {

   148

			if (v->owner != owner) continue;

   149

			if (IsPlayerBuildableVehicleType(v->type) && v->IsPrimaryVehicle()) {

   150

				num++;

   151

				if (v->age > 730) {

   152

					/* Find the vehicle with the lowest amount of profit */

   153

					if (min_profit_first == true) {

   154

						min_profit = v->profit_last_year;

   155

						min_profit_first = false;

   156

					} else if (min_profit > v->profit_last_year) {

   157

						min_profit = v->profit_last_year;

   158

					}

   159

				}

   160

			}

   161

		}

   162

   163

		_score_part[owner][SCORE_VEHICLES] = num;

   164

		/* Don't allow negative min_profit to show */

   165

		if (min_profit > 0)

   166

			_score_part[owner][SCORE_MIN_PROFIT] = ClampToI32(min_profit);

   167

	}

   168

   169

/* Count stations */

   170

	{

   171

		uint num = 0;

   172

		const Station* st;

   173

   174

		FOR_ALL_STATIONS(st) {

   175

			if (st->owner == owner) num += CountBits(st->facilities);

   176

		}

   177

		_score_part[owner][SCORE_STATIONS] = num;

   178

	}

   179

   180

/* Generate statistics depending on recent income statistics */

   181

	{

   182

		int numec = min(p->num_valid_stat_ent, 12);

   183

		if (numec != 0) {

   184

			const PlayerEconomyEntry *pee = p->old_economy;

   185

			Money min_income = pee->income + pee->expenses;

   186

			Money max_income = pee->income + pee->expenses;

   187

   188

			do {

   189

				min_income = min(min_income, pee->income + pee->expenses);

   190

				max_income = max(max_income, pee->income + pee->expenses);

   191

			} while (++pee,--numec);

   192

   193

			if (min_income > 0)

   194

				_score_part[owner][SCORE_MIN_INCOME] = ClampToI32(min_income);

   195

   196

			_score_part[owner][SCORE_MAX_INCOME] = ClampToI32(max_income);

   197

		}

   198

	}

   199

   200

/* Generate score depending on amount of transported cargo */

   201

	{

   202

		const PlayerEconomyEntry* pee;

   203

		int numec;

   204

		uint32 total_delivered;

   205

   206

		numec = min(p->num_valid_stat_ent, 4);

   207

		if (numec != 0) {

   208

			pee = p->old_economy;

   209

			total_delivered = 0;

   210

			do {

   211

				total_delivered += pee->delivered_cargo;

   212

			} while (++pee,--numec);

   213

   214

			_score_part[owner][SCORE_DELIVERED] = total_delivered;

   215

		}

   216

	}

   217

   218

/* Generate score for variety of cargo */

   219

	{

   220

		uint num = CountBits(p->cargo_types);

   221

		_score_part[owner][SCORE_CARGO] = num;

   222

		if (update) p->cargo_types = 0;

   223

	}

   224

   225

/* Generate score for player money */

   226

	{

   227

		if (p->player_money > 0) {

   228

			_score_part[owner][SCORE_MONEY] = ClampToI32(p->player_money);

   229

		}

   230

	}

   231

   232

/* Generate score for loan */

   233

	{

   234

		_score_part[owner][SCORE_LOAN] = ClampToI32(_score_info[SCORE_LOAN].needed - p->current_loan);

   235

	}

   236

   237

	/* Now we calculate the score for each item.. */

   238

	{

   239

		int total_score = 0;

   240

		int s;

   241

		score = 0;

   242

		for (ScoreID i = SCORE_BEGIN; i < SCORE_END; i++) {

   243

			/* Skip the total */

   244

			if (i == SCORE_TOTAL) continue;

   245

			/*  Check the score */

   246

			s = Clamp(_score_part[owner][i], 0, _score_info[i].needed) * _score_info[i].score / _score_info[i].needed;

   247

			score += s;

   248

			total_score += _score_info[i].score;

   249

		}

   250

   251

		_score_part[owner][SCORE_TOTAL] = score;

   252

   253

		/*  We always want the score scaled to SCORE_MAX (1000) */

   254

		if (total_score != SCORE_MAX) score = score * SCORE_MAX / total_score;

   255

	}

   256

   257

	if (update) {

   258

		p->old_economy[0].performance_history = score;

   259

		UpdateCompanyHQ(p, score);

   260

		p->old_economy[0].company_value = CalculateCompanyValue(p);

   261

	}

   262

   263

	InvalidateWindow(WC_PERFORMANCE_DETAIL, 0);

   264

	return score;

   265

}

   266

   267

/*  use PLAYER_SPECTATOR as new_player to delete the player. */

   268

void ChangeOwnershipOfPlayerItems(PlayerID old_player, PlayerID new_player)

   269

{

   270

	Town *t;

   271

	PlayerID old = _current_player;

   272

   273

	assert(old_player != new_player);

   274

   275

	{

   276

		Player *p;

   277

		uint i;

   278

   279

		/* See if the old_player had shares in other companies */

   280

		_current_player = old_player;

   281

		FOR_ALL_PLAYERS(p) {

   282

			for (i = 0; i < 4; i++) {

   283

				if (p->share_owners[i] == old_player) {

   284

					/* Sell his shares */

   285

					CommandCost res = DoCommand(0, p->index, 0, DC_EXEC, CMD_SELL_SHARE_IN_COMPANY);

   286

					/* Because we are in a DoCommand, we can't just execute an other one and

   287

					 *  expect the money to be removed. We need to do it ourself! */

   288

					SubtractMoneyFromPlayer(res);

   289

				}

   290

			}

   291

		}

   292

   293

		/* Sell all the shares that people have on this company */

   294

		p = GetPlayer(old_player);

   295

		for (i = 0; i < 4; i++) {

   296

			_current_player = p->share_owners[i];

   297

			if (_current_player != PLAYER_SPECTATOR) {

   298

				/* Sell the shares */

   299

				CommandCost res = DoCommand(0, old_player, 0, DC_EXEC, CMD_SELL_SHARE_IN_COMPANY);

   300

				/* Because we are in a DoCommand, we can't just execute an other one and

   301

				 *  expect the money to be removed. We need to do it ourself! */

   302

				SubtractMoneyFromPlayer(res);

   303

			}

   304

		}

   305

	}

   306

   307

	_current_player = old_player;

   308

   309

	/* Temporarily increase the player's money, to be sure that

   310

	 * removing his/her property doesn't fail because of lack of money.

   311

	 * Not too drastically though, because it could overflow */

   312

	if (new_player == PLAYER_SPECTATOR) {

   313

		GetPlayer(old_player)->player_money = MAX_UVALUE(uint64) >> 2; // jackpot ;p

   314

	}

   315

   316

	if (new_player == PLAYER_SPECTATOR) {

   317

		Subsidy *s;

   318

   319

		for (s = _subsidies; s != endof(_subsidies); s++) {

   320

			if (s->cargo_type != CT_INVALID && s->age >= 12) {

   321

				if (GetStation(s->to)->owner == old_player) s->cargo_type = CT_INVALID;

   322

			}

   323

		}

   324

	}

   325

   326

	/* Take care of rating in towns */

   327

	FOR_ALL_TOWNS(t) {

   328

		/* If a player takes over, give the ratings to that player. */

   329

		if (new_player != PLAYER_SPECTATOR) {

   330

			if (HasBit(t->have_ratings, old_player)) {

   331

				if (HasBit(t->have_ratings, new_player)) {

   332

					// use max of the two ratings.

   333

					t->ratings[new_player] = max(t->ratings[new_player], t->ratings[old_player]);

   334

				} else {

   335

					SetBit(t->have_ratings, new_player);

   336

					t->ratings[new_player] = t->ratings[old_player];

   337

				}

   338

			}

   339

		}

   340

   341

		/* Reset the ratings for the old player */

   342

		t->ratings[old_player] = 500;

   343

		ClrBit(t->have_ratings, old_player);

   344

	}

   345

   346

	{

   347

		int num_train = 0;

   348

		int num_road = 0;

   349

		int num_ship = 0;

   350

		int num_aircraft = 0;

   351

		Vehicle *v;

   352

   353

		/*  Determine Ids for the new vehicles */

   354

		FOR_ALL_VEHICLES(v) {

   355

			if (v->owner == new_player) {

   356

				switch (v->type) {

   357

					case VEH_TRAIN:    if (IsFrontEngine(v)) num_train++; break;

   358

					case VEH_ROAD:     if (IsRoadVehFront(v)) num_road++; break;

   359

					case VEH_SHIP:     num_ship++; break;

   360

					case VEH_AIRCRAFT: if (IsNormalAircraft(v)) num_aircraft++; break;

   361

					default: break;

   362

				}

   363

			}

   364

		}

   365

   366

		FOR_ALL_VEHICLES(v) {

   367

			if (v->owner == old_player && IsInsideMM(v->type, VEH_TRAIN, VEH_AIRCRAFT + 1)) {

   368

				if (new_player == PLAYER_SPECTATOR) {

   369

					DeleteWindowById(WC_VEHICLE_VIEW, v->index);

   370

					DeleteWindowById(WC_VEHICLE_DETAILS, v->index);

   371

					DeleteWindowById(WC_VEHICLE_ORDERS, v->index);

   372

   373

					if (v->IsPrimaryVehicle() || (v->type == VEH_TRAIN && IsFreeWagon(v))) {

   374

						switch (v->type) {

   375

							default: NOT_REACHED();

   376

   377

							case VEH_TRAIN: {

   378

								Vehicle *u = v;

   379

								do {

   380

									Vehicle *next = GetNextVehicle(u);

   381

									delete u;

   382

									u = next;

   383

								} while (u != NULL);

   384

							} break;

   385

   386

							case VEH_ROAD:

   387

							case VEH_SHIP:

   388

								delete v;

   389

								break;

   390

   391

							case VEH_AIRCRAFT:

   392

								DeleteVehicleChain(v);

   393

								break;

   394

						}

   395

					}

   396

				} else {

   397

					v->owner = new_player;

   398

					v->group_id = DEFAULT_GROUP;

   399

					if (IsEngineCountable(v)) GetPlayer(new_player)->num_engines[v->engine_type]++;

   400

					switch (v->type) {

   401

						case VEH_TRAIN:    if (IsFrontEngine(v)) v->unitnumber = ++num_train; break;

   402

						case VEH_ROAD:     if (IsRoadVehFront(v)) v->unitnumber = ++num_road; break;

   403

						case VEH_SHIP:     v->unitnumber = ++num_ship; break;

   404

						case VEH_AIRCRAFT: if (IsNormalAircraft(v)) v->unitnumber = ++num_aircraft; break;

   405

						default: NOT_REACHED();

   406

					}

   407

				}

   408

			}

   409

		}

   410

	}

   411

   412

	/*  Change ownership of tiles */

   413

	{

   414

		TileIndex tile = 0;

   415

		do {

   416

			ChangeTileOwner(tile, old_player, new_player);

   417

		} while (++tile != MapSize());

   418

	}

   419

   420

	/* Change color of existing windows */

   421

	if (new_player != PLAYER_SPECTATOR) ChangeWindowOwner(old_player, new_player);

   422

   423

	_current_player = old;

   424

   425

	MarkWholeScreenDirty();

   426

}

   427

   428

static void ChangeNetworkOwner(PlayerID current_player, PlayerID new_player)

   429

{

   430

#ifdef ENABLE_NETWORK

   431

	if (!_networking) return;

   432

   433

	if (current_player == _local_player) {

   434

		_network_playas = new_player;

   435

		SetLocalPlayer(new_player);

   436

	}

   437

   438

	if (!_network_server) return;

   439

   440

	/* The server has to handle all administrative issues, for example

   441

	* updating and notifying all clients of what has happened */

   442

	NetworkTCPSocketHandler *cs;

   443

	NetworkClientInfo *ci = NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX);

   444

   445

	/* The server has just changed from player */

   446

	if (current_player == ci->client_playas) {

   447

		ci->client_playas = new_player;

   448

		NetworkUpdateClientInfo(NETWORK_SERVER_INDEX);

   449

	}

   450

   451

	/* Find all clients that were in control of this company, and mark them as new_player */

   452

	FOR_ALL_CLIENTS(cs) {

   453

		ci = DEREF_CLIENT_INFO(cs);

   454

		if (current_player == ci->client_playas) {

   455

			ci->client_playas = new_player;

   456

			NetworkUpdateClientInfo(ci->client_index);

   457

		}

   458

	}

   459

#endif /* ENABLE_NETWORK */

   460

}

   461

   462

static void PlayersCheckBankrupt(Player *p)

   463

{

   464

	PlayerID owner;

   465

   466

	/*  If the player has money again, it does not go bankrupt */

   467

	if (p->player_money >= 0) {

   468

		p->quarters_of_bankrupcy = 0;

   469

		return;

   470

	}

   471

   472

	p->quarters_of_bankrupcy++;

   473

   474

	owner = p->index;

   475

   476

	switch (p->quarters_of_bankrupcy) {

   477

		case 2:

   478

			AddNewsItem( (StringID)(owner | NB_BTROUBLE),

   479

				NEWS_FLAGS(NM_CALLBACK, 0, NT_COMPANY_INFO, DNC_BANKRUPCY),0,0);

   480

			break;

   481

		case 3: {

   482

			/* XXX - In multiplayer, should we ask other players if it wants to take

   483

		          over when it is a human company? -- TrueLight */

   484

			if (IsHumanPlayer(owner)) {

   485

				AddNewsItem( (StringID)(owner | NB_BTROUBLE),

   486

					NEWS_FLAGS(NM_CALLBACK, 0, NT_COMPANY_INFO, DNC_BANKRUPCY),0,0);

   487

				break;

   488

			}

   489

   490

			/* Check if the company has any value.. if not, declare it bankrupt

   491

			 *  right now */

   492

			Money val = CalculateCompanyValue(p);