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_func.h"

    19

#include "saveload.h"

    20

#include "industry.h"

    21

#include "town.h"

    22

#include "network/network.h"

    23

#include "sound.h"

    24

#include "engine.h"

    25

#include "network/network_data.h"

    26

#include "variables.h"

    27

#include "vehicle_gui.h"

    28

#include "ai/ai.h"

    29

#include "train.h"

    30

#include "roadveh.h"

    31

#include "aircraft.h"

    32

#include "newgrf_engine.h"

    33

#include "newgrf_sound.h"

    34

#include "newgrf_callbacks.h"

    35

#include "newgrf_industries.h"

    36

#include "newgrf_industrytiles.h"

    37

#include "unmovable.h"

    38

#include "date.h"

    39

#include "cargotype.h"

    40

#include "player_face.h"

    41

#include "group.h"

    42

#include "strings_func.h"

    43

#include "tile_cmd.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

Economy _economy;

    93

Subsidy _subsidies[MAX_PLAYERS];

    94

Prices _price;

    95

uint16 _price_frac[NUM_PRICES];

    96

Money  _cargo_payment_rates[NUM_CARGO];

    97

uint16 _cargo_payment_rates_frac[NUM_CARGO];

    98

Money _additional_cash_required;

    99

   100

Money CalculateCompanyValue(const Player* p)

   101

{

   102

	PlayerID owner = p->index;

   103

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

   104

	Money value = 0;

   105

   106

	Station *st;

   107

	uint num = 0;

   108

   109

	FOR_ALL_STATIONS(st) {

   110

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

   111

	}

   112

   113

	value += num * _price.station_value * 25;

   114

   115

	Vehicle *v;

   116

	FOR_ALL_VEHICLES(v) {

   117

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

   118

   119

		if (v->type == VEH_TRAIN ||

   120

				v->type == VEH_ROAD ||

   121

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

   122

				v->type == VEH_SHIP) {

   123

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

   124

		}

   125

	}

   126

   127

	/* Add real money value */

   128

	value -= p->current_loan;

   129

	value += p->player_money;

   130

   131

	return max(value, (Money)1);

   132

}

   133

   134

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

   135

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

   136

 * @param update the economy with calculated score

   137

 * @param p player been evaluated

   138

 * @return actual score of this player

   139

 * */

   140

int UpdateCompanyRatingAndValue(Player *p, bool update)

   141

{

   142

	byte owner = p->index;

   143

	int score = 0;

   144

   145

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

   146

   147

/* Count vehicles */

   148

	{

   149

		Vehicle *v;

   150

		Money min_profit = 0;

   151

		bool min_profit_first = true;

   152

		uint num = 0;

   153

   154

		FOR_ALL_VEHICLES(v) {

   155

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

   156

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

   157

				num++;

   158

				if (v->age > 730) {

   159

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

   160

					if (min_profit_first == true) {

   161

						min_profit = v->profit_last_year;

   162

						min_profit_first = false;

   163

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

   164

						min_profit = v->profit_last_year;

   165

					}

   166

				}

   167

			}

   168

		}

   169

   170

		_score_part[owner][SCORE_VEHICLES] = num;

   171

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

   172

		if (min_profit > 0)

   173

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

   174

	}

   175

   176

/* Count stations */

   177

	{

   178

		uint num = 0;

   179

		const Station* st;

   180

   181

		FOR_ALL_STATIONS(st) {

   182

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

   183

		}

   184

		_score_part[owner][SCORE_STATIONS] = num;

   185

	}

   186

   187

/* Generate statistics depending on recent income statistics */

   188

	{

   189

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

   190

		if (numec != 0) {

   191

			const PlayerEconomyEntry *pee = p->old_economy;

   192

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

   193

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

   194

   195

			do {

   196

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

   197

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

   198

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

   199

   200

			if (min_income > 0)

   201

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

   202

   203

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

   204

		}

   205

	}

   206

   207

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

   208

	{

   209

		const PlayerEconomyEntry* pee;

   210

		int numec;

   211

		uint32 total_delivered;

   212

   213

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

   214

		if (numec != 0) {

   215

			pee = p->old_economy;

   216

			total_delivered = 0;

   217

			do {

   218

				total_delivered += pee->delivered_cargo;

   219

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

   220

   221

			_score_part[owner][SCORE_DELIVERED] = total_delivered;

   222

		}

   223

	}

   224

   225

/* Generate score for variety of cargo */

   226

	{

   227

		uint num = CountBits(p->cargo_types);

   228

		_score_part[owner][SCORE_CARGO] = num;

   229

		if (update) p->cargo_types = 0;

   230

	}

   231

   232

/* Generate score for player money */

   233

	{

   234

		if (p->player_money > 0) {

   235

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

   236

		}

   237

	}

   238

   239

/* Generate score for loan */

   240

	{

   241

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

   242

	}

   243

   244

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

   245

	{

   246

		int total_score = 0;

   247

		int s;

   248

		score = 0;

   249

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

   250

			/* Skip the total */

   251

			if (i == SCORE_TOTAL) continue;

   252

			/*  Check the score */

   253

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

   254

			score += s;

   255

			total_score += _score_info[i].score;

   256

		}

   257

   258

		_score_part[owner][SCORE_TOTAL] = score;

   259

   260

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

   261

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

   262

	}

   263

   264

	if (update) {

   265

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

   266

		UpdateCompanyHQ(p, score);

   267

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

   268

	}

   269

   270

	InvalidateWindow(WC_PERFORMANCE_DETAIL, 0);

   271

	return score;

   272

}

   273

   274

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

   275

void ChangeOwnershipOfPlayerItems(PlayerID old_player, PlayerID new_player)

   276

{

   277

	Town *t;

   278

	PlayerID old = _current_player;

   279

   280

	assert(old_player != new_player);

   281

   282

	{

   283

		Player *p;

   284

		uint i;

   285

   286

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

   287

		_current_player = old_player;

   288

		FOR_ALL_PLAYERS(p) {

   289

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

   290

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

   291

					/* Sell his shares */

   292

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

   293

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

   294

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

   295

					SubtractMoneyFromPlayer(res);

   296

				}

   297

			}

   298

		}

   299

   300

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

   301

		p = GetPlayer(old_player);

   302

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

   303

			_current_player = p->share_owners[i];

   304

			if (_current_player != PLAYER_SPECTATOR) {

   305

				/* Sell the shares */

   306

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

   307

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

   308

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

   309

				SubtractMoneyFromPlayer(res);

   310

			}

   311

		}

   312

	}

   313

   314

	_current_player = old_player;

   315

   316

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

   317

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

   318

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

   319

	if (new_player == PLAYER_SPECTATOR) {

   320

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

   321

	}

   322

   323

	if (new_player == PLAYER_SPECTATOR) {

   324

		Subsidy *s;

   325

   326

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

   327

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

   328

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

   329

			}

   330

		}

   331

	}

   332

   333

	/* Take care of rating in towns */

   334

	FOR_ALL_TOWNS(t) {

   335

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

   336

		if (new_player != PLAYER_SPECTATOR) {

   337

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

   338

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

   339

					// use max of the two ratings.

   340

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

   341

				} else {

   342

					SetBit(t->have_ratings, new_player);

   343

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

   344

				}

   345

			}

   346

		}

   347

   348

		/* Reset the ratings for the old player */

   349

		t->ratings[old_player] = 500;

   350

		ClrBit(t->have_ratings, old_player);

   351

	}

   352

   353

	{

   354

		int num_train = 0;

   355

		int num_road = 0;

   356

		int num_ship = 0;

   357

		int num_aircraft = 0;

   358

		Vehicle *v;

   359

   360

		/*  Determine Ids for the new vehicles */

   361

		FOR_ALL_VEHICLES(v) {

   362

			if (v->owner == new_player) {

   363

				switch (v->type) {

   364

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

   365

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

   366

					case VEH_SHIP:     num_ship++; break;

   367

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

   368

					default: break;

   369

				}

   370

			}

   371

		}

   372

   373

		FOR_ALL_VEHICLES(v) {

   374

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

   375

				if (new_player == PLAYER_SPECTATOR) {

   376

					DeleteWindowById(WC_VEHICLE_VIEW, v->index);

   377

					DeleteWindowById(WC_VEHICLE_DETAILS, v->index);

   378

					DeleteWindowById(WC_VEHICLE_ORDERS, v->index);

   379

   380

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

   381

						switch (v->type) {

   382

							default: NOT_REACHED();

   383

   384

							case VEH_TRAIN: {

   385

								Vehicle *u = v;

   386

								do {

   387

									Vehicle *next = GetNextVehicle(u);

   388

									delete u;

   389

									u = next;

   390

								} while (u != NULL);

   391

							} break;

   392

   393

							case VEH_ROAD:

   394

							case VEH_SHIP:

   395

								delete v;

   396

								break;

   397

   398

							case VEH_AIRCRAFT:

   399

								DeleteVehicleChain(v);

   400

								break;

   401

						}

   402

					}

   403

				} else {

   404

					v->owner = new_player;

   405

					v->group_id = DEFAULT_GROUP;

   406

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

   407

					switch (v->type) {

   408

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

   409

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

   410

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

   411

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

   412

						default: NOT_REACHED();

   413

					}

   414

				}

   415

			}

   416

		}

   417

	}

   418

   419

	/*  Change ownership of tiles */

   420

	{

   421

		TileIndex tile = 0;

   422

		do {

   423

			ChangeTileOwner(tile, old_player, new_player);

   424

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

   425

	}

   426

   427

	/* Change color of existing windows */

   428

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

   429

   430

	_current_player = old;

   431

   432

	MarkWholeScreenDirty();

   433

}

   434

   435

static void ChangeNetworkOwner(PlayerID current_player, PlayerID new_player)

   436

{

   437

#ifdef ENABLE_NETWORK

   438

	if (!_networking) return;

   439

   440

	if (current_player == _local_player) {

   441

		_network_playas = new_player;

   442

		SetLocalPlayer(new_player);

   443

	}

   444

   445

	if (!_network_server) return;

   446

   447

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

   448

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

   449

	NetworkTCPSocketHandler *cs;

   450

	NetworkClientInfo *ci = NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX);

   451

   452

	/* The server has just changed from player */

   453

	if (current_player == ci->client_playas) {

   454

		ci->client_playas = new_player;

   455

		NetworkUpdateClientInfo(NETWORK_SERVER_INDEX);

   456

	}

   457

   458

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

   459

	FOR_ALL_CLIENTS(cs) {

   460

		ci = DEREF_CLIENT_INFO(cs);

   461

		if (current_player == ci->client_playas) {

   462

			ci->client_playas = new_player;

   463

			NetworkUpdateClientInfo(ci->client_index);

   464

		}

   465

	}

   466

#endif /* ENABLE_NETWORK */

   467

}

   468

   469

static void PlayersCheckBankrupt(Player *p)

   470

{

   471

	PlayerID owner;

   472

   473

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

   474

	if (p->player_money >= 0) {

   475

		p->quarters_of_bankrupcy = 0;

   476

		return;

   477

	}

   478

   479

	p->quarters_of_bankrupcy++;

   480

   481

	owner = p->index;

   482

   483

	switch (p->quarters_of_bankrupcy) {

   484

		case 2:

   485

			AddNewsItem( (StringID)(owner | NB_BTROUBLE),

   486

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

   487

			break;

   488

		case 3: {

   489

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

   490

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

   491

			if (IsHumanPlayer(owner)) {

   492