1

/* $Id$ */

     2

     3

/** @file economy.cpp */

     4

     5

#include "stdafx.h"

     6

#include "openttd.h"

     7

#include "currency.h"

     8

#include "landscape.h"

     9

#include "table/strings.h"

    10

#include "table/sprites.h"

    11

#include "news.h"

    12

#include "player.h"

    13

#include "station.h"

    14

#include "vehicle.h"

    15

#include "command_func.h"

    16

#include "saveload.h"

    17

#include "industry.h"

    18

#include "town.h"

    19

#include "network/network.h"

    20

#include "sound.h"

    21

#include "engine.h"

    22

#include "network/network_data.h"

    23

#include "variables.h"

    24

#include "vehicle_gui.h"

    25

#include "ai/ai.h"

    26

#include "train.h"

    27

#include "roadveh.h"

    28

#include "aircraft.h"

    29

#include "newgrf_engine.h"

    30

#include "newgrf_sound.h"

    31

#include "newgrf_callbacks.h"

    32

#include "newgrf_industries.h"

    33

#include "newgrf_industrytiles.h"

    34

#include "unmovable.h"

    35

#include "date.h"

    36

#include "cargotype.h"

    37

#include "player_face.h"

    38

#include "group.h"

    39

#include "strings_func.h"

    40

#include "tile_cmd.h"

    41

#include "functions.h"

    42

#include "window_func.h"

    43

    44

/**

    45

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

    46

 *

    47

 * This function multiplies two integer values. The result is

    48

 * shifted by the amount of shift to right.

    49

 *

    50

 * @param a The first integer

    51

 * @param b The second integer

    52

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

    53

 * @return The shifted result

    54

 */

    55

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

    56

{

    57

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

    58

}

    59

    60

/**

    61

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

    62

 *

    63

 * This function multiplies two unsigned integers. The result is

    64

 * shifted by the amount of shift to right.

    65

 *

    66

 * @param a The first unsigned integer

    67

 * @param b The second unsigned integer

    68

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

    69

 * @return The shifted result

    70

 */

    71

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

    72

{

    73

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

    74

}

    75

    76

/* Score info */

    77

const ScoreInfo _score_info[] = {

    78

	{ SCORE_VEHICLES,        120, 100 },

    79

	{ SCORE_STATIONS,         80, 100 },

    80

	{ SCORE_MIN_PROFIT,    10000, 100 },

    81

	{ SCORE_MIN_INCOME,    50000,  50 },

    82

	{ SCORE_MAX_INCOME,   100000, 100 },

    83

	{ SCORE_DELIVERED,     40000, 400 },

    84

	{ SCORE_CARGO,             8,  50 },

    85

	{ SCORE_MONEY,      10000000,  50 },

    86

	{ SCORE_LOAN,         250000,  50 },

    87

	{ SCORE_TOTAL,             0,   0 }

    88

};

    89

    90

int _score_part[MAX_PLAYERS][SCORE_END];

    91

Economy _economy;

    92

Subsidy _subsidies[MAX_PLAYERS];

    93

Prices _price;

    94

uint16 _price_frac[NUM_PRICES];

    95

Money  _cargo_payment_rates[NUM_CARGO];

    96

uint16 _cargo_payment_rates_frac[NUM_CARGO];

    97

Money _additional_cash_required;

    98

    99

Money CalculateCompanyValue(const Player* p)

   100

{

   101

	PlayerID owner = p->index;

   102

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

   103

	Money value = 0;

   104

   105

	Station *st;

   106

	uint num = 0;

   107

   108

	FOR_ALL_STATIONS(st) {

   109

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

   110

	}

   111

   112

	value += num * _price.station_value * 25;

   113

   114

	Vehicle *v;

   115

	FOR_ALL_VEHICLES(v) {

   116

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

   117

   118

		if (v->type == VEH_TRAIN ||

   119

				v->type == VEH_ROAD ||

   120

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

   121

				v->type == VEH_SHIP) {

   122

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

   123

		}

   124

	}

   125

   126

	/* Add real money value */

   127

	value -= p->current_loan;

   128

	value += p->player_money;

   129

   130

	return max(value, (Money)1);

   131

}

   132

   133

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

   134

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

   135

 * @param update the economy with calculated score

   136

 * @param p player been evaluated

   137

 * @return actual score of this player

   138

 * */

   139

int UpdateCompanyRatingAndValue(Player *p, bool update)

   140

{

   141

	byte owner = p->index;

   142

	int score = 0;

   143

   144

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

   145

   146

/* Count vehicles */

   147

	{

   148

		Vehicle *v;

   149

		Money min_profit = 0;

   150

		bool min_profit_first = true;

   151

		uint num = 0;

   152

   153

		FOR_ALL_VEHICLES(v) {

   154

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

   155

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

   156

				num++;

   157

				if (v->age > 730) {

   158

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

   159

					if (min_profit_first == true) {

   160

						min_profit = v->profit_last_year;

   161

						min_profit_first = false;

   162

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

   163

						min_profit = v->profit_last_year;

   164

					}

   165

				}

   166

			}

   167

		}

   168

   169

		_score_part[owner][SCORE_VEHICLES] = num;

   170

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

   171

		if (min_profit > 0)

   172

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

   173

	}

   174

   175

/* Count stations */

   176

	{

   177

		uint num = 0;

   178

		const Station* st;

   179

   180

		FOR_ALL_STATIONS(st) {

   181

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

   182

		}

   183

		_score_part[owner][SCORE_STATIONS] = num;

   184

	}

   185

   186

/* Generate statistics depending on recent income statistics */

   187

	{

   188

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

   189

		if (numec != 0) {

   190

			const PlayerEconomyEntry *pee = p->old_economy;

   191

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

   192

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

   193

   194

			do {

   195

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

   196

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

   197

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

   198

   199

			if (min_income > 0)

   200

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

   201

   202

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

   203

		}

   204

	}

   205

   206

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

   207

	{

   208

		const PlayerEconomyEntry* pee;

   209

		int numec;

   210

		uint32 total_delivered;

   211

   212

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

   213

		if (numec != 0) {

   214

			pee = p->old_economy;

   215

			total_delivered = 0;

   216

			do {

   217

				total_delivered += pee->delivered_cargo;

   218

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

   219

   220

			_score_part[owner][SCORE_DELIVERED] = total_delivered;

   221

		}

   222

	}

   223

   224

/* Generate score for variety of cargo */

   225

	{

   226

		uint num = CountBits(p->cargo_types);

   227

		_score_part[owner][SCORE_CARGO] = num;

   228

		if (update) p->cargo_types = 0;

   229

	}

   230

   231

/* Generate score for player money */

   232

	{

   233

		if (p->player_money > 0) {

   234

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

   235

		}

   236

	}

   237

   238

/* Generate score for loan */

   239

	{

   240

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

   241

	}

   242

   243

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

   244

	{

   245

		int total_score = 0;

   246

		int s;

   247

		score = 0;

   248

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

   249

			/* Skip the total */

   250

			if (i == SCORE_TOTAL) continue;

   251

			/*  Check the score */

   252

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

   253

			score += s;

   254

			total_score += _score_info[i].score;

   255

		}

   256

   257

		_score_part[owner][SCORE_TOTAL] = score;

   258

   259

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

   260

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

   261

	}

   262

   263

	if (update) {

   264

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

   265

		UpdateCompanyHQ(p, score);

   266

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

   267

	}

   268

   269

	InvalidateWindow(WC_PERFORMANCE_DETAIL, 0);

   270

	return score;

   271

}

   272

   273

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

   274

void ChangeOwnershipOfPlayerItems(PlayerID old_player, PlayerID new_player)

   275

{

   276

	Town *t;

   277

	PlayerID old = _current_player;

   278

   279

	assert(old_player != new_player);

   280

   281

	{

   282

		Player *p;

   283

		uint i;

   284

   285

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

   286

		_current_player = old_player;

   287

		FOR_ALL_PLAYERS(p) {

   288

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

   289

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

   290

					/* Sell his shares */

   291

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

   292

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

   293

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

   294

					SubtractMoneyFromPlayer(res);

   295

				}

   296

			}

   297

		}

   298

   299

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

   300

		p = GetPlayer(old_player);

   301

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

   302

			_current_player = p->share_owners[i];

   303

			if (_current_player != PLAYER_SPECTATOR) {

   304

				/* Sell the shares */

   305

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

   306

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

   307

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

   308

				SubtractMoneyFromPlayer(res);

   309

			}

   310

		}

   311

	}

   312

   313

	_current_player = old_player;

   314

   315

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

   316

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

   317

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

   318

	if (new_player == PLAYER_SPECTATOR) {

   319

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

   320

	}

   321

   322

	if (new_player == PLAYER_SPECTATOR) {

   323

		Subsidy *s;

   324

   325

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

   326

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

   327

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

   328

			}

   329

		}

   330

	}

   331

   332

	/* Take care of rating in towns */

   333

	FOR_ALL_TOWNS(t) {

   334

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

   335

		if (new_player != PLAYER_SPECTATOR) {

   336

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

   337

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

   338

					// use max of the two ratings.

   339

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

   340

				} else {

   341

					SetBit(t->have_ratings, new_player);

   342

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

   343

				}

   344

			}

   345

		}

   346

   347

		/* Reset the ratings for the old player */

   348

		t->ratings[old_player] = 500;

   349

		ClrBit(t->have_ratings, old_player);

   350

	}

   351

   352

	{

   353

		int num_train = 0;

   354

		int num_road = 0;

   355

		int num_ship = 0;

   356

		int num_aircraft = 0;

   357

		Vehicle *v;

   358

   359

		/*  Determine Ids for the new vehicles */

   360

		FOR_ALL_VEHICLES(v) {

   361

			if (v->owner == new_player) {

   362

				switch (v->type) {

   363

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

   364

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

   365

					case VEH_SHIP:     num_ship++; break;

   366

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

   367

					default: break;

   368

				}

   369

			}

   370

		}

   371

   372

		FOR_ALL_VEHICLES(v) {

   373

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

   374

				if (new_player == PLAYER_SPECTATOR) {

   375

					DeleteWindowById(WC_VEHICLE_VIEW, v->index);

   376

					DeleteWindowById(WC_VEHICLE_DETAILS, v->index);

   377

					DeleteWindowById(WC_VEHICLE_ORDERS, v->index);

   378

   379

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

   380

						switch (v->type) {

   381

							default: NOT_REACHED();

   382

   383

							case VEH_TRAIN: {

   384

								Vehicle *u = v;

   385

								do {

   386

									Vehicle *next = GetNextVehicle(u);

   387

									delete u;

   388

									u = next;

   389

								} while (u != NULL);

   390

							} break;

   391

   392

							case VEH_ROAD:

   393

							case VEH_SHIP:

   394

								delete v;

   395

								break;

   396

   397

							case VEH_AIRCRAFT:

   398

								DeleteVehicleChain(v);

   399

								break;

   400

						}

   401

					}

   402

				} else {

   403

					v->owner = new_player;

   404

					v->group_id = DEFAULT_GROUP;

   405

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

   406

					switch (v->type) {

   407

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

   408

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

   409

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

   410

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

   411

						default: NOT_REACHED();

   412

					}

   413

				}

   414

			}

   415

		}

   416

	}

   417

   418

	/*  Change ownership of tiles */

   419

	{

   420

		TileIndex tile = 0;

   421

		do {

   422

			ChangeTileOwner(tile, old_player, new_player);

   423

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

   424

	}

   425

   426

	/* Change color of existing windows */

   427

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

   428

   429

	_current_player = old;

   430

   431

	MarkWholeScreenDirty();

   432

}

   433

   434

static void ChangeNetworkOwner(PlayerID current_player, PlayerID new_player)

   435

{

   436

#ifdef ENABLE_NETWORK

   437

	if (!_networking) return;

   438

   439

	if (current_player == _local_player) {

   440

		_network_playas = new_player;

   441

		SetLocalPlayer(new_player);

   442

	}

   443

   444

	if (!_network_server) return;

   445

   446

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

   447

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

   448

	NetworkTCPSocketHandler *cs;

   449

	NetworkClientInfo *ci = NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX);

   450

   451

	/* The server has just changed from player */

   452

	if (current_player == ci->client_playas) {

   453

		ci->client_playas = new_player;

   454

		NetworkUpdateClientInfo(NETWORK_SERVER_INDEX);

   455

	}

   456

   457

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

   458

	FOR_ALL_CLIENTS(cs) {

   459

		ci = DEREF_CLIENT_INFO(cs);

   460

		if (current_player == ci->client_playas) {

   461

			ci->client_playas = new_player;

   462

			NetworkUpdateClientInfo(ci->client_index);

   463

		}

   464

	}

   465

#endif /* ENABLE_NETWORK */

   466

}

   467

   468

static void PlayersCheckBankrupt(Player *p)

   469

{

   470

	PlayerID owner;

   471

   472

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

   473

	if (p->player_money >= 0) {

   474

		p->quarters_of_bankrupcy = 0;

   475

		return;

   476

	}

   477

   478

	p->quarters_of_bankrupcy++;

   479

   480

	owner = p->index;

   481

   482

	switch (p->quarters_of_bankrupcy) {

   483

		case 2:

   484

			AddNewsItem( (StringID)(owner | NB_BTROUBLE),

   485

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

   486

			break;

   487

		case 3: {

   488

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

   489

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

   490

			if (IsHumanPlayer(owner)) {

   491

				AddNewsItem( (StringID)(owner | NB_BTROUBLE),

   492