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 "command_func.h"

    15

#include "saveload.h"

    16

#include "industry.h"

    17

#include "town.h"

    18

#include "network/network.h"

    19

#include "engine.h"

    20

#include "network/network_data.h"

    21

#include "variables.h"

    22

#include "vehicle_gui.h"

    23

#include "ai/ai.h"

    24

#include "train.h"

    25

#include "roadveh.h"

    26

#include "aircraft.h"

    27

#include "newgrf_engine.h"

    28

#include "newgrf_sound.h"

    29

#include "newgrf_callbacks.h"

    30

#include "newgrf_industries.h"

    31

#include "newgrf_industrytiles.h"

    32

#include "unmovable.h"

    33

#include "cargotype.h"

    34

#include "player_face.h"

    35

#include "group.h"

    36

#include "strings_func.h"

    37

#include "tile_cmd.h"

    38

#include "functions.h"

    39

#include "window_func.h"

    40

#include "date_func.h"

    41

#include "vehicle_func.h"

    42

#include "sound_func.h"

    43

#include "track_type.h"

    44

#include "track_func.h"

    45

#include "rail_map.h"

    46

#include "signal_func.h"

    47

#include "gfx_func.h"

    48

    49

/**

    50

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

    51

 *

    52

 * This function multiplies two integer values. The result is

    53

 * shifted by the amount of shift to right.

    54

 *

    55

 * @param a The first integer

    56

 * @param b The second integer

    57

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

    58

 * @return The shifted result

    59

 */

    60

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

    61

{

    62

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

    63

}

    64

    65

/**

    66

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

    67

 *

    68

 * This function multiplies two unsigned integers. The result is

    69

 * shifted by the amount of shift to right.

    70

 *

    71

 * @param a The first unsigned integer

    72

 * @param b The second unsigned integer

    73

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

    74

 * @return The shifted result

    75

 */

    76

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

    77

{

    78

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

    79

}

    80

    81

/* Score info */

    82

const ScoreInfo _score_info[] = {

    83

	{ SCORE_VEHICLES,        120, 100 },

    84

	{ SCORE_STATIONS,         80, 100 },

    85

	{ SCORE_MIN_PROFIT,    10000, 100 },

    86

	{ SCORE_MIN_INCOME,    50000,  50 },

    87

	{ SCORE_MAX_INCOME,   100000, 100 },

    88

	{ SCORE_DELIVERED,     40000, 400 },

    89

	{ SCORE_CARGO,             8,  50 },

    90

	{ SCORE_MONEY,      10000000,  50 },

    91

	{ SCORE_LOAN,         250000,  50 },

    92

	{ SCORE_TOTAL,             0,   0 }

    93

};

    94

    95

int _score_part[MAX_PLAYERS][SCORE_END];

    96

Economy _economy;

    97

Subsidy _subsidies[MAX_PLAYERS];

    98

Prices _price;

    99

uint16 _price_frac[NUM_PRICES];

   100

Money  _cargo_payment_rates[NUM_CARGO];

   101

uint16 _cargo_payment_rates_frac[NUM_CARGO];

   102

Money _additional_cash_required;

   103

   104

Money CalculateCompanyValue(const Player* p)

   105

{

   106

	PlayerID owner = p->index;

   107

	Money value = 0;

   108

   109

	Station *st;

   110

	uint num = 0;

   111

   112

	FOR_ALL_STATIONS(st) {

   113

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

   114

	}

   115

   116

	value += num * _price.station_value * 25;

   117

   118

	Vehicle *v;

   119

	FOR_ALL_VEHICLES(v) {

   120

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

   121

   122

		if (v->type == VEH_TRAIN ||

   123

				v->type == VEH_ROAD ||

   124

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

   125

				v->type == VEH_SHIP) {

   126

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

   127

		}

   128

	}

   129

   130

	/* Add real money value */

   131

	value -= p->current_loan;

   132

	value += p->player_money;

   133

   134

	return max(value, (Money)1);

   135

}

   136

   137

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

   138

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

   139

 * @param update the economy with calculated score

   140

 * @param p player been evaluated

   141

 * @return actual score of this player

   142

 * */

   143

int UpdateCompanyRatingAndValue(Player *p, bool update)

   144

{

   145

	byte owner = p->index;

   146

	int score = 0;

   147

   148

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

   149

   150

/* Count vehicles */

   151

	{

   152

		Vehicle *v;

   153

		Money min_profit = 0;

   154

		bool min_profit_first = true;

   155

		uint num = 0;

   156

   157

		FOR_ALL_VEHICLES(v) {

   158

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

   159

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

   160

				num++;

   161

				if (v->age > 730) {

   162

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

   163

					if (min_profit_first == true) {

   164

						min_profit = v->profit_last_year;

   165

						min_profit_first = false;

   166

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

   167

						min_profit = v->profit_last_year;

   168

					}

   169

				}

   170

			}

   171

		}

   172

   173

		_score_part[owner][SCORE_VEHICLES] = num;

   174

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

   175

		if (min_profit > 0)

   176

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

   177

	}

   178

   179

/* Count stations */

   180

	{

   181

		uint num = 0;

   182

		const Station* st;

   183

   184

		FOR_ALL_STATIONS(st) {

   185

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

   186

		}

   187

		_score_part[owner][SCORE_STATIONS] = num;

   188

	}

   189

   190

/* Generate statistics depending on recent income statistics */

   191

	{

   192

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

   193

		if (numec != 0) {

   194

			const PlayerEconomyEntry *pee = p->old_economy;

   195

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

   196

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

   197

   198

			do {

   199

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

   200

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

   201

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

   202

   203

			if (min_income > 0)

   204

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

   205

   206

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

   207

		}

   208

	}

   209

   210

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

   211

	{

   212

		const PlayerEconomyEntry* pee;

   213

		int numec;

   214

		uint32 total_delivered;

   215

   216

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

   217

		if (numec != 0) {

   218

			pee = p->old_economy;

   219

			total_delivered = 0;

   220

			do {

   221

				total_delivered += pee->delivered_cargo;

   222

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

   223

   224

			_score_part[owner][SCORE_DELIVERED] = total_delivered;

   225

		}

   226

	}

   227

   228

/* Generate score for variety of cargo */

   229

	{

   230

		uint num = CountBits(p->cargo_types);

   231

		_score_part[owner][SCORE_CARGO] = num;

   232

		if (update) p->cargo_types = 0;

   233

	}

   234

   235

/* Generate score for player money */

   236

	{

   237

		if (p->player_money > 0) {

   238

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

   239

		}

   240

	}

   241

   242

/* Generate score for loan */

   243

	{

   244

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

   245

	}

   246

   247

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

   248

	{

   249

		int total_score = 0;

   250

		int s;

   251

		score = 0;

   252

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

   253

			/* Skip the total */

   254

			if (i == SCORE_TOTAL) continue;

   255

			/*  Check the score */

   256

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

   257

			score += s;

   258

			total_score += _score_info[i].score;

   259

		}

   260

   261

		_score_part[owner][SCORE_TOTAL] = score;

   262

   263

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

   264

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

   265

	}

   266

   267

	if (update) {

   268

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

   269

		UpdateCompanyHQ(p, score);

   270

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

   271

	}

   272

   273

	InvalidateWindow(WC_PERFORMANCE_DETAIL, 0);

   274

	return score;

   275

}

   276

   277

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

   278

void ChangeOwnershipOfPlayerItems(PlayerID old_player, PlayerID new_player)

   279

{

   280

	Town *t;

   281

	PlayerID old = _current_player;

   282

   283

	assert(old_player != new_player);

   284

   285

	{

   286

		Player *p;

   287

		uint i;

   288

   289

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

   290

		_current_player = old_player;

   291

		FOR_ALL_PLAYERS(p) {

   292

			if (!p->is_active) continue;

   293

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

   294

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

   295

					/* Sell his shares */

   296

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

   297

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

   298

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

   299

					SubtractMoneyFromPlayer(res);

   300

				}

   301

			}

   302

		}

   303

   304

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

   305

		p = GetPlayer(old_player);

   306

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

   307

			_current_player = p->share_owners[i];

   308

			if (_current_player != PLAYER_SPECTATOR) {

   309

				/* Sell the shares */

   310

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

   311

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

   312

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

   313

				SubtractMoneyFromPlayer(res);

   314

			}

   315

		}

   316

	}

   317

   318

	_current_player = old_player;

   319

   320

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

   321

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

   322

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

   323

	if (new_player == PLAYER_SPECTATOR) {

   324

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

   325

	}

   326

   327

	if (new_player == PLAYER_SPECTATOR) {

   328

		Subsidy *s;

   329

   330

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

   331

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

   332

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

   333

			}

   334

		}

   335

	}

   336

   337

	/* Take care of rating in towns */

   338

	FOR_ALL_TOWNS(t) {

   339

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

   340

		if (new_player != PLAYER_SPECTATOR) {

   341

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

   342

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

   343

					// use max of the two ratings.

   344

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

   345

				} else {

   346

					SetBit(t->have_ratings, new_player);

   347

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

   348

				}

   349

			}

   350

		}

   351

   352

		/* Reset the ratings for the old player */

   353

		t->ratings[old_player] = 500;

   354

		ClrBit(t->have_ratings, old_player);

   355

	}

   356

   357

	{

   358

		int num_train = 0;

   359

		int num_road = 0;

   360

		int num_ship = 0;

   361

		int num_aircraft = 0;

   362

		Vehicle *v;

   363

   364

		/*  Determine Ids for the new vehicles */

   365

		FOR_ALL_VEHICLES(v) {

   366

			if (v->owner == new_player) {

   367

				switch (v->type) {

   368

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

   369

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

   370

					case VEH_SHIP:     num_ship++; break;

   371

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

   372

					default: break;

   373

				}

   374

			}

   375

		}

   376

   377

		FOR_ALL_VEHICLES(v) {

   378

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

   379

				if (new_player == PLAYER_SPECTATOR) {

   380

					DeleteWindowById(WC_VEHICLE_VIEW, v->index);

   381

					DeleteWindowById(WC_VEHICLE_DETAILS, v->index);

   382

					DeleteWindowById(WC_VEHICLE_ORDERS, v->index);

   383

   384

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

   385

						switch (v->type) {

   386

							default: NOT_REACHED();

   387

   388

							case VEH_TRAIN: {

   389

								Vehicle *u = v;

   390

								do {

   391

									Vehicle *next = GetNextVehicle(u);

   392

									delete u;

   393

									u = next;

   394

								} while (u != NULL);

   395

							} break;

   396

   397

							case VEH_ROAD:

   398

							case VEH_SHIP:

   399

								delete v;

   400

								break;

   401

   402

							case VEH_AIRCRAFT:

   403

								DeleteVehicleChain(v);

   404

								break;

   405

						}

   406

					}

   407

				} else {

   408

					v->owner = new_player;

   409

					v->colormap = PAL_NONE;

   410

					v->group_id = DEFAULT_GROUP;

   411

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

   412

					switch (v->type) {

   413

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

   414

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

   415

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

   416

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

   417

						default: NOT_REACHED();

   418

					}

   419

				}

   420

			}

   421

		}

   422

	}

   423

   424

	/*  Change ownership of tiles */

   425

	{

   426

		TileIndex tile = 0;

   427

		do {

   428

			ChangeTileOwner(tile, old_player, new_player);

   429

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

   430

   431

		if (new_player != PLAYER_SPECTATOR) {

   432

			/* Update all signals because there can be new segment that was owned by two players

   433

			 * and signals were not propagated */

   434

			tile = 0;

   435

   436

			do {

   437

				if (IsTileType(tile, MP_RAILWAY) && IsTileOwner(tile, new_player) && HasSignals(tile)) {

   438

					TrackBits tracks = GetTrackBits(tile);

   439

					do { // there may be two tracks with signals for TRACK_BIT_HORZ and TRACK_BIT_VERT

   440

						Track track = RemoveFirstTrack(&tracks);

   441

						if (HasSignalOnTrack(tile, track)) SetSignalsOnBothDir(tile, track);

   442

					} while (tracks != TRACK_BIT_NONE);

   443

				}

   444

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

   445

		}

   446

	}

   447

   448

	/* Change color of existing windows */

   449

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

   450

   451

	_current_player = old;

   452

   453

	MarkWholeScreenDirty();

   454

}

   455

   456

static void ChangeNetworkOwner(PlayerID current_player, PlayerID new_player)

   457

{

   458

#ifdef ENABLE_NETWORK

   459

	if (!_networking) return;

   460

   461

	if (current_player == _local_player) {

   462

		_network_playas = new_player;

   463

		SetLocalPlayer(new_player);

   464

	}

   465

   466

	if (!_network_server) return;

   467

   468

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

   469

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

   470

	NetworkTCPSocketHandler *cs;

   471

	NetworkClientInfo *ci = NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX);

   472

   473

	/* The server has just changed from player */

   474

	if (current_player == ci->client_playas) {

   475

		ci->client_playas = new_player;

   476

		NetworkUpdateClientInfo(NETWORK_SERVER_INDEX);

   477

	}

   478

   479

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

   480

	FOR_ALL_CLIENTS(cs) {

   481

		ci = DEREF_CLIENT_INFO(cs);

   482

		if (current_player == ci->client_playas) {

   483

			ci->client_playas = new_player;

   484

			NetworkUpdateClientInfo(ci->client_index);

   485

		}

   486

	}

   487

#endif /* ENABLE_NETWORK */

   488

}

   489

   490

static void PlayersCheckBankrupt(Player *p)

   491

{