1

#include "stdafx.h"

     2

#include "ttd.h"

     3

#include "table/strings.h"

     4

#include "vehicle.h"

     5

#include "gfx.h"

     6

#include "assert.h"

     7

#include "saveload.h"

     8

     9

extern void StartupEconomy();

    10

extern void InitNewsItemStructs();

    11

    12

byte _name_array[512][32];

    13

    14

static inline uint32 ROR(uint32 x, int n)

    15

{

    16

	return (x >> n) + (x << ((sizeof(x)*8)-n));

    17

}

    18

    19

// For multiplayer, we introduced this new way of random-seeds

    20

//  It is player-based, so 2 clients can do 2 commands at the same time

    21

//  without the game desyncing.

    22

// It is not used for non-multiplayer games

    23

#ifdef ENABLE_NETWORK

    24

	#define PLAYER_SEED_RANDOM

    25

#else

    26

	#undef PLAYER_SEED_RANDOM

    27

#endif

    28

    29

// its for now not used at all because it is still desyncing :(

    30

#undef PLAYER_SEED_RANDOM

    31

    32

uint32 Random()

    33

{

    34

#ifdef PLAYER_SEED_RANDOM

    35

	if (_current_player>=MAX_PLAYERS || !_networking) {

    36

		uint32 s = _random_seeds[0][0];

    37

		uint32 t = _random_seeds[0][1];

    38

		_random_seeds[0][0] = s + ROR(t ^ 0x1234567F, 7);

    39

		return _random_seeds[0][1] = ROR(s, 3);

    40

	} else {

    41

		uint32 s = _player_seeds[_current_player][0];

    42

		uint32 t = _player_seeds[_current_player][1];

    43

		_player_seeds[_current_player][0] = s + ROR(t ^ 0x1234567F, 7);

    44

		return _player_seeds[_current_player][1] = ROR(s, 3);

    45

	}

    46

#else

    47

	uint32 s = _random_seeds[0][0];

    48

	uint32 t = _random_seeds[0][1];

    49

	_random_seeds[0][0] = s + ROR(t ^ 0x1234567F, 7);

    50

	return _random_seeds[0][1] = ROR(s, 3);

    51

#endif

    52

}

    53

    54

uint RandomRange(uint max)

    55

{

    56

	return (uint16)Random() * max >> 16;

    57

}

    58

    59

uint32 InteractiveRandom()

    60

{

    61

	uint32 t = _random_seeds[1][1];

    62

	uint32 s = _random_seeds[1][0];

    63

	_random_seeds[1][0] = s + ROR(t ^ 0x1234567F, 7);

    64

	return _random_seeds[1][1] = ROR(s, 3);

    65

}

    66

    67

uint InteractiveRandomRange(uint max)

    68

{

    69

	return (uint16)InteractiveRandom() * max >> 16;

    70

}

    71

    72

void InitPlayerRandoms()

    73

{

    74

	int i;

    75

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

    76

		_player_seeds[i][0]=InteractiveRandom();

    77

		_player_seeds[i][1]=InteractiveRandom();

    78

		}

    79

}

    80

    81

void SetDate(uint date)

    82

{

    83

	YearMonthDay ymd;

    84

	ConvertDayToYMD(&ymd, _date = date);

    85

	_cur_year = ymd.year;

    86

	_cur_month = ymd.month;

    87

}

    88

    89

void InitializeClearLand();

    90

void InitializeRail();

    91

void InitializeRailGui();

    92

void InitializeRoad();

    93

void InitializeRoadGui();

    94

void InitializeAirportGui();

    95

void InitializeDock();

    96

void InitializeDockGui();

    97

void InitializeIndustries();

    98

void InitializeLandscape();

    99

void InitializeTowns();

   100

void InitializeTrees();

   101

void InitializeStations();

   102

static void InitializeNameMgr();

   103

void InitializePlayers();

   104

static void InitializeCheats();

   105

   106

void GenerateLandscape();

   107

void GenerateClearTile();

   108

   109

void GenerateIndustries();

   110

void GenerateUnmovables();

   111

void GenerateTowns();

   112

   113

void StartupPlayers();

   114

void StartupEngines();

   115

void StartupDisasters();

   116

void GenerateTrees();

   117

   118

void ConvertGroundTilesIntoWaterTiles();

   119

   120

void InitializeGame()

   121

{

   122

	SetObjectToPlace(1, 0, 0, 0);

   123

   124

	_pause = 0;

   125

	_fast_forward = 0;

   126

	_tick_counter = 0;

   127

	_date_fract = 0;

   128

	_cur_tileloop_tile = 0;

   129

	_vehicle_id_ctr_day = 0;

   130

   131

	{

   132

		uint starting = ConvertIntDate(_patches.starting_date);

   133

		if ( starting == (uint)-1) starting = 10958;

   134

		SetDate(starting);

   135

	}

   136

   137

	InitializeVehicles();

   138

	_backup_orders_tile = 0;

   139

   140

	InitNewsItemStructs();

   141

	InitializeLandscape();

   142

	InitializeClearLand();

   143

	InitializeRail();

   144

	InitializeRailGui();

   145

	InitializeRoad();

   146

	InitializeRoadGui();

   147

	InitializeAirportGui();

   148

	InitializeDock();

   149

	InitializeDockGui();

   150

	InitializeTowns();

   151

	InitializeTrees();

   152

	InitializeStations();

   153

	InitializeIndustries();

   154

   155

	InitializeNameMgr();

   156

	InitializeVehiclesGuiList();

   157

	InitializeTrains();

   158

   159

	InitializePlayers();

   160

	InitializeCheats();

   161

   162

	InitTextEffects();

   163

	InitializeAnimatedTiles();

   164

   165

	InitializeLandscapeVariables(false);

   166

   167

	ResetObjectToPlace();

   168

}

   169

   170

void GenerateWorld(int mode)

   171

{

   172

	int i;

   173

   174

	_generating_world = true;

   175

	InitializeGame();

   176

	SetObjectToPlace(1, 0, 0, 0);

   177

   178

	// Must start economy early because of the costs.

   179

	StartupEconomy();

   180

   181

	// Don't generate landscape items when in the scenario editor.

   182

	if (mode == 1) {

   183

		// empty world in scenario editor

   184

		ConvertGroundTilesIntoWaterTiles();

   185

	} else {

   186

		GenerateLandscape();

   187

		GenerateClearTile();

   188

   189

		// only generate towns, tree and industries in newgame mode.

   190

		if (mode == 0) {

   191

			GenerateTowns();

   192

			GenerateTrees();

   193

			GenerateIndustries();

   194

			GenerateUnmovables();

   195

		}

   196

	}

   197

   198

	// These are probably pointless when inside the scenario editor.

   199

	StartupPlayers();

   200

	StartupEngines();

   201

	StartupDisasters();

   202

	_generating_world = false;

   203

   204

	// No need to run the tile loop in the scenario editor.

   205

	if (mode != 1) {

   206

		for(i=0x500; i!=0; i--)

   207

			RunTileLoop();

   208

	}

   209

   210

	ResetObjectToPlace();

   211

}

   212

   213

void DeleteName(StringID id)

   214

{

   215

	if ((id & 0xF800) == 0x7800) {

   216

		memset(_name_array[id & 0x1FF], 0, sizeof(_name_array[id & 0x1FF]));

   217

	}

   218

}

   219

   220

byte *GetName(int id, byte *buff)

   221

{

   222

	byte *b;

   223

   224

	if (id & 0x600) {

   225

		if (id & 0x200) {

   226

			if (id & 0x400) {

   227

				GetParamInt32();

   228

				GetParamUint16();

   229

			} else {

   230

				GetParamUint16();

   231

			}

   232

		} else {

   233

			GetParamInt32();

   234

		}

   235

	}

   236

   237

	b = _name_array[(id&~0x600)];

   238

	while ((*buff++ = *b++) != 0);

   239

   240

	return buff - 1;

   241

}

   242

   243

   244

static void InitializeCheats()

   245

{

   246

	memset(&_cheats, 0, sizeof(Cheats));

   247

}

   248

   249

   250

static void InitializeNameMgr()

   251

{

   252

	memset(_name_array, 0, sizeof(_name_array));

   253

}

   254

   255

StringID AllocateName(const byte *name, byte skip)

   256

{

   257

	int free_item = -1;

   258

	const byte *names;

   259

	byte *dst;

   260

	int i;

   261

   262

	names = &_name_array[0][0];

   263

   264

	for(i=0; i!=512; i++,names+=sizeof(_name_array[0])) {

   265

		if (names[0] == 0) {

   266

			if (free_item == -1)

   267

				free_item = i;

   268

		} else {

   269

			if (str_eq(names, name)) {

   270

				_error_message = STR_0132_CHOSEN_NAME_IN_USE_ALREADY;

   271

				return 0;

   272

			}

   273

		}

   274

	}

   275

   276

	if (free_item < 0) {

   277

		_error_message = STR_0131_TOO_MANY_NAMES_DEFINED;

   278

		return 0;

   279

	}

   280

   281

	dst=_name_array[free_item];

   282

   283

	for(i=0; (dst[i] = name[i]) != 0 && ++i != 32; ) {}

   284

	dst[31] = 0;

   285

   286

	return free_item | 0x7800 | (skip << 8);

   287

}

   288

   289

const TileIndexDiff _tileoffs_by_dir[4] = {

   290

	TILE_XY(-1, 0),

   291

	TILE_XY(0, 1),

   292

	TILE_XY(1, 0),

   293

	TILE_XY(0, -1),

   294

};

   295

   296

   297

#define M(a,b) ((a<<5)|b)

   298

static const uint16 _month_date_from_year_day[] = {

   299

M(0,1),M(0,2),M(0,3),M(0,4),M(0,5),M(0,6),M(0,7),M(0,8),M(0,9),M(0,10),M(0,11),M(0,12),M(0,13),M(0,14),M(0,15),M(0,16),M(0,17),M(0,18),M(0,19),M(0,20),M(0,21),M(0,22),M(0,23),M(0,24),M(0,25),M(0,26),M(0,27),M(0,28),M(0,29),M(0,30),M(0,31),

   300

M(1,1),M(1,2),M(1,3),M(1,4),M(1,5),M(1,6),M(1,7),M(1,8),M(1,9),M(1,10),M(1,11),M(1,12),M(1,13),M(1,14),M(1,15),M(1,16),M(1,17),M(1,18),M(1,19),M(1,20),M(1,21),M(1,22),M(1,23),M(1,24),M(1,25),M(1,26),M(1,27),M(1,28),M(1,29),

   301

M(2,1),M(2,2),M(2,3),M(2,4),M(2,5),M(2,6),M(2,7),M(2,8),M(2,9),M(2,10),M(2,11),M(2,12),M(2,13),M(2,14),M(2,15),M(2,16),M(2,17),M(2,18),M(2,19),M(2,20),M(2,21),M(2,22),M(2,23),M(2,24),M(2,25),M(2,26),M(2,27),M(2,28),M(2,29),M(2,30),M(2,31),

   302

M(3,1),M(3,2),M(3,3),M(3,4),M(3,5),M(3,6),M(3,7),M(3,8),M(3,9),M(3,10),M(3,11),M(3,12),M(3,13),M(3,14),M(3,15),M(3,16),M(3,17),M(3,18),M(3,19),M(3,20),M(3,21),M(3,22),M(3,23),M(3,24),M(3,25),M(3,26),M(3,27),M(3,28),M(3,29),M(3,30),

   303

M(4,1),M(4,2),M(4,3),M(4,4),M(4,5),M(4,6),M(4,7),M(4,8),M(4,9),M(4,10),M(4,11),M(4,12),M(4,13),M(4,14),M(4,15),M(4,16),M(4,17),M(4,18),M(4,19),M(4,20),M(4,21),M(4,22),M(4,23),M(4,24),M(4,25),M(4,26),M(4,27),M(4,28),M(4,29),M(4,30),M(4,31),

   304

M(5,1),M(5,2),M(5,3),M(5,4),M(5,5),M(5,6),M(5,7),M(5,8),M(5,9),M(5,10),M(5,11),M(5,12),M(5,13),M(5,14),M(5,15),M(5,16),M(5,17),M(5,18),M(5,19),M(5,20),M(5,21),M(5,22),M(5,23),M(5,24),M(5,25),M(5,26),M(5,27),M(5,28),M(5,29),M(5,30),

   305

M(6,1),M(6,2),M(6,3),M(6,4),M(6,5),M(6,6),M(6,7),M(6,8),M(6,9),M(6,10),M(6,11),M(6,12),M(6,13),M(6,14),M(6,15),M(6,16),M(6,17),M(6,18),M(6,19),M(6,20),M(6,21),M(6,22),M(6,23),M(6,24),M(6,25),M(6,26),M(6,27),M(6,28),M(6,29),M(6,30),M(6,31),

   306

M(7,1),M(7,2),M(7,3),M(7,4),M(7,5),M(7,6),M(7,7),M(7,8),M(7,9),M(7,10),M(7,11),M(7,12),M(7,13),M(7,14),M(7,15),M(7,16),M(7,17),M(7,18),M(7,19),M(7,20),M(7,21),M(7,22),M(7,23),M(7,24),M(7,25),M(7,26),M(7,27),M(7,28),M(7,29),M(7,30),M(7,31),

   307

M(8,1),M(8,2),M(8,3),M(8,4),M(8,5),M(8,6),M(8,7),M(8,8),M(8,9),M(8,10),M(8,11),M(8,12),M(8,13),M(8,14),M(8,15),M(8,16),M(8,17),M(8,18),M(8,19),M(8,20),M(8,21),M(8,22),M(8,23),M(8,24),M(8,25),M(8,26),M(8,27),M(8,28),M(8,29),M(8,30),

   308

M(9,1),M(9,2),M(9,3),M(9,4),M(9,5),M(9,6),M(9,7),M(9,8),M(9,9),M(9,10),M(9,11),M(9,12),M(9,13),M(9,14),M(9,15),M(9,16),M(9,17),M(9,18),M(9,19),M(9,20),M(9,21),M(9,22),M(9,23),M(9,24),M(9,25),M(9,26),M(9,27),M(9,28),M(9,29),M(9,30),M(9,31),

   309

M(10,1),M(10,2),M(10,3),M(10,4),M(10,5),M(10,6),M(10,7),M(10,8),M(10,9),M(10,10),M(10,11),M(10,12),M(10,13),M(10,14),M(10,15),M(10,16),M(10,17),M(10,18),M(10,19),M(10,20),M(10,21),M(10,22),M(10,23),M(10,24),M(10,25),M(10,26),M(10,27),M(10,28),M(10,29),M(10,30),

   310

M(11,1),M(11,2),M(11,3),M(11,4),M(11,5),M(11,6),M(11,7),M(11,8),M(11,9),M(11,10),M(11,11),M(11,12),M(11,13),M(11,14),M(11,15),M(11,16),M(11,17),M(11,18),M(11,19),M(11,20),M(11,21),M(11,22),M(11,23),M(11,24),M(11,25),M(11,26),M(11,27),M(11,28),M(11,29),M(11,30),M(11,31),

   311

};

   312

#undef M

   313

   314

enum {

   315

	ACCUM_JAN = 0,

   316

	ACCUM_FEB = ACCUM_JAN + 31,

   317

	ACCUM_MAR = ACCUM_FEB + 29,

   318

	ACCUM_APR = ACCUM_MAR + 31,

   319

	ACCUM_MAY = ACCUM_APR + 30,

   320

	ACCUM_JUN = ACCUM_MAY + 31,

   321

	ACCUM_JUL = ACCUM_JUN + 30,

   322

	ACCUM_AUG = ACCUM_JUL + 31,

   323

	ACCUM_SEP = ACCUM_AUG + 31,

   324

	ACCUM_OCT = ACCUM_SEP + 30,

   325

	ACCUM_NOV = ACCUM_OCT + 31,

   326

	ACCUM_DEC = ACCUM_NOV + 30,

   327

};

   328

   329

static const uint16 _accum_days_for_month[] = {

   330

	ACCUM_JAN,ACCUM_FEB,ACCUM_MAR,ACCUM_APR,

   331

	ACCUM_MAY,ACCUM_JUN,ACCUM_JUL,ACCUM_AUG,

   332

	ACCUM_SEP,ACCUM_OCT,ACCUM_NOV,ACCUM_DEC,

   333

};

   334

   335

   336

void ConvertDayToYMD(YearMonthDay *ymd, uint16 date)

   337

{

   338

	uint yr = date / (365+365+365+366);

   339

	uint rem = date % (365+365+365+366);

   340

	uint x;

   341

   342

	yr *= 4;

   343

   344

	if (rem >= 366) {

   345

		rem--;

   346

		do {

   347

			rem -= 365;

   348

			yr++;

   349

		} while (rem >= 365);

   350

		if (rem >= 31+28) rem++;

   351

	}

   352

   353

	ymd->year = yr;

   354

   355

	x = _month_date_from_year_day[rem];

   356

	ymd->month = x >> 5;

   357

	ymd->day = x & 0x1F;

   358

}

   359

   360

// year is a number between 0..?

   361

// month is a number between 0..11

   362

// day is a number between 1..31

   363

uint ConvertYMDToDay(uint year, uint month, uint day)

   364

{

   365

	uint rem;

   366

   367

	// day in the year

   368

	rem = _accum_days_for_month[month] + day - 1;

   369

   370

	// remove feb 29 from year 1,2,3

   371

	if (year & 3) rem += (year & 3) * 365 + (rem < 31+29);

   372

   373

	// base date.

   374

	return (year >> 2) * (365+365+365+366) + rem;

   375

}

   376

   377

// convert a date on the form

   378

// 1920 - 2090

   379

// 192001 - 209012

   380

// 19200101 - 20901231

   381

// or if > 2090 and below 65536, treat it as a daycount

   382

// returns -1 if no conversion was possible

   383

uint ConvertIntDate(uint date)

   384

{

   385

	uint year, month = 0, day = 1;

   386

   387

	if (IS_INT_INSIDE(date, 1920, 2090 + 1)) {

   388

		year = date - 1920;

   389

	} else if (IS_INT_INSIDE(date, 192001, 209012+1)) {

   390

		month = date % 100 - 1;

   391

		year = date / 100 - 1920;

   392

	} else if (IS_INT_INSIDE(date, 19200101, 20901231+1)) {

   393

		day = date % 100; date /= 100;

   394

		month = date % 100 - 1;

   395

		year = date / 100 - 1920;

   396

	} else if (IS_INT_INSIDE(date, 2091, 65536))

   397

		return date;

   398

	else

   399

		return (uint)-1;

   400

   401

	// invalid ranges?

   402

	if (month >= 12 || !IS_INT_INSIDE(day, 1, 31+1)) return (uint)-1;

   403

   404

	return ConvertYMDToDay(year, month, day);

   405

}

   406

   407

typedef struct LandscapePredefVar {

   408

	StringID names[NUM_CARGO];

   409

	byte weights[NUM_CARGO];

   410

	StringID sprites[NUM_CARGO];

   411

   412

	uint16 initial_cargo_payment[NUM_CARGO];

   413

	byte transit_days_table_1[NUM_CARGO];

   414

	byte transit_days_table_2[NUM_CARGO];

   415

   416

	byte railwagon_by_cargo[3][NUM_CARGO];

   417

   418

	byte road_veh_by_cargo_start[NUM_CARGO];

   419

	byte road_veh_by_cargo_count[NUM_CARGO];

   420

} LandscapePredefVar;

   421

   422

#include "table/landscape_const.h"

   423

   424

   425

// Calculate constants that depend on the landscape type.

   426

void InitializeLandscapeVariables(bool only_constants)

   427

{

   428

	const LandscapePredefVar *lpd;

   429

	int i;

   430

	StringID str;

   431

   432

	lpd = &_landscape_predef_var[_opt.landscape];

   433

   434

	memcpy(_cargoc.ai_railwagon, lpd->railwagon_by_cargo, sizeof(lpd->railwagon_by_cargo));

   435

	memcpy(_cargoc.ai_roadveh_start, lpd->road_veh_by_cargo_start,sizeof(lpd->road_veh_by_cargo_start));

   436

	memcpy(_cargoc.ai_roadveh_count, lpd->road_veh_by_cargo_count,sizeof(lpd->road_veh_by_cargo_count));

   437

   438

	for(i=0; i!=NUM_CARGO; i++) {

   439

		_cargoc.sprites[i] = lpd->sprites[i];

   440

   441

		str = lpd->names[i];

   442

		_cargoc.names_s[i] = str;

   443

		_cargoc.names_p[i] = (str += 0x20);

   444

		_cargoc.names_long_s[i] = (str += 0x20);

   445

		_cargoc.names_long_p[i] = (str += 0x20);

   446

		_cargoc.names_short[i] = (str += 0x20);

   447

		_cargoc.weights[i] = lpd->weights[i];

   448

   449

		if (!only_constants) {

   450

			_cargo_payment_rates[i] = lpd->initial_cargo_payment[i];

   451

			_cargo_payment_rates_frac[i] = 0;

   452

		}

   453

   454

		_cargoc.transit_days_1[i] = lpd->transit_days_table_1[i];

   455

		_cargoc.transit_days_2[i] = lpd->transit_days_table_2[i];

   456

	}

   457

}

   458

   459

// distance in Manhattan metric

   460

uint GetTileDist(TileIndex xy1, TileIndex xy2)

   461

{

   462

	return myabs(GET_TILE_X(xy1) - GET_TILE_X(xy2)) +

   463

				myabs(GET_TILE_Y(xy1) - GET_TILE_Y(xy2));

   464

}

   465

   466

// maximum distance in x _or_ y

   467

uint GetTileDist1D(TileIndex xy1, TileIndex xy2)

   468

{

   469

	return max(myabs(GET_TILE_X(xy1) - GET_TILE_X(xy2)),

   470

						 myabs(GET_TILE_Y(xy1) - GET_TILE_Y(xy2)));

   471

}

   472

   473

uint GetTileDist1Db(TileIndex xy1, TileIndex xy2)

   474

{

   475

	int a = myabs(GET_TILE_X(xy1) - GET_TILE_X(xy2));

   476

	int b = myabs(GET_TILE_Y(xy1) - GET_TILE_Y(xy2));

   477

   478

	if (a > b)

   479

		return a*2+b;

   480

	else

   481

		return b*2+a;

   482

}

   483

   484

uint GetTileDistAdv(TileIndex xy1, TileIndex xy2)

   485

{

   486

	uint a = myabs(GET_TILE_X(xy1) - GET_TILE_X(xy2));

   487

	uint b = myabs(GET_TILE_Y(xy1) - GET_TILE_Y(xy2));

   488

	return a*a+b*b;

   489

}

   490

   491

bool CheckDistanceFromEdge(TileIndex tile, uint distance)

   492

{

   493

	return IS_INT_INSIDE(GET_TILE_X(tile), distance, TILE_X_MAX + 1 - distance) &&

   494

			IS_INT_INSIDE(GET_TILE_Y(tile), distance, TILE_Y_MAX + 1 - distance);

   495

}

   496

   497

void OnNewDay_Train(Vehicle *v);

   498

void OnNewDay_RoadVeh(Vehicle *v);

   499

void OnNewDay_Aircraft(Vehicle *v);

   500

void OnNewDay_Ship(Vehicle *v);

   501

void OnNewDay_EffectVehicle(Vehicle *v) { /* empty */ }

   502

void OnNewDay_DisasterVehicle(Vehicle *v);

   503

   504

typedef void OnNewVehicleDayProc(Vehicle *v);

   505

   506

static OnNewVehicleDayProc * _on_new_vehicle_day_proc[] = {

   507

	OnNewDay_Train,

   508

	OnNewDay_RoadVeh,

   509

	OnNewDay_Ship,

   510

	OnNewDay_Aircraft,

   511

	OnNewDay_EffectVehicle,

   512

	OnNewDay_DisasterVehicle,

   513

};

   514

   515

void EnginesDailyLoop();

   516

void DisasterDailyLoop();

   517

void PlayersMonthlyLoop();

   518

void EnginesMonthlyLoop();

   519

void TownsMonthlyLoop();

   520

void IndustryMonthlyLoop();

   521

void StationMonthlyLoop();

   522