1

#include "stdafx.h"

     2

#include "ttd.h"

     3

#include "vehicle.h"

     4

#include "gfx.h"

     5

#include "assert.h"

     6

#include "saveload.h"

     7

     8

extern void StartupEconomy();

     9

extern void InitNewsItemStructs();

    10

    11

byte _name_array[512][32];

    12

    13

static INLINE uint32 ROR(uint32 x, int n)

    14

{

    15

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

    16

}

    17

    18

    19

uint32 Random()

    20

{

    21

	if (_current_player>=MAX_PLAYERS) {

    22

		uint32 s = _random_seeds[0][0];

    23

		uint32 t = _random_seeds[0][1];

    24

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

    25

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

    26

	} else {

    27

		uint32 s = _player_seeds[_current_player][0];

    28

		uint32 t = _player_seeds[_current_player][1];

    29

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

    30

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

    31

	}

    32

}

    33

    34

uint RandomRange(uint max)

    35

{

    36

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

    37

}

    38

    39

uint32 InteractiveRandom()

    40

{

    41

	uint32 t = _random_seeds[1][1];

    42

	uint32 s = _random_seeds[1][0];

    43

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

    44

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

    45

}

    46

    52

void InitPlayerRandoms()

    53

{

    54

	int i;

    55

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

    56

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

    57

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

    58

		}

    59

}

    60

    61

void memswap(void *a, void *b, size_t size) {

    62

	void *c = alloca(size);

    63

	memcpy(c, a, size);

    64

	memcpy(a, b, size);

    65

	memcpy(b, c, size);

    66

}

    67

    68

void SetDate(uint date)

    69

{

    70

	YearMonthDay ymd;

    71

	ConvertDayToYMD(&ymd, _date = date);

    72

	_cur_year = ymd.year;

    73

	_cur_month = ymd.month;

    74

}

    75

    76

void InitializeClearLand();

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void InitializeRail();

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void InitializeRailGui();

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void InitializeRoad();

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void InitializeRoadGui();

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void InitializeAirportGui();

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void InitializeDock();

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void InitializeDockGui();

    84

void InitializeIndustries();

    85

void InitializeLandscape();

    86

void InitializeTowns();

    87

void InitializeTrees();

    88

void InitializeStations();

    89

void InitializeNameMgr();

    90

void InitializePlayers();

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void InitializeCheats();

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    93

void GenerateLandscape();

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void GenerateClearTile();

    95

    96

void GenerateIndustries();

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void GenerateUnmovables();

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void GenerateTowns();

    99

   100

void StartupPlayers();

   101

void StartupEngines();

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void StartupDisasters();

   103

void GenerateTrees();

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   105

void ConvertGroundTilesIntoWaterTiles();

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   107

void InitializeGame()

   108

{

   109

	SetObjectToPlace(1, 0, 0, 0);

   110

   111

	_pause = 0;

   112

	_fast_forward = 0;

   113

	_tick_counter = 0;

   114

	_date_fract = 0;

   115

	_cur_tileloop_tile = 0;

   116

	_vehicle_id_ctr_day = 0;

   117

   118

	{

   119

		uint starting = ConvertIntDate(_patches.starting_date);

   120

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

   121

		SetDate(starting);

   122

	}

   123

   124

	InitializeVehicles();

   125

	_backup_orders_tile = 0;

   126

   127

	InitNewsItemStructs();

   128

	InitializeLandscape();

   129

	InitializeClearLand();

   130

	InitializeRail();

   131

	InitializeRailGui();

   132

	InitializeRoad();

   133

	InitializeRoadGui();

   134

	InitializeAirportGui();

   135

	InitializeDock();

   136

	InitializeDockGui();

   137

	InitializeTowns();

   138

	InitializeTrees();

   139

	InitializeStations();

   140

	InitializeIndustries();

   141

   142

	InitializeNameMgr();

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	InitializeVehiclesGuiList();

   144

	InitializeTrains();

   145

   146

	InitializePlayers();

   147

	InitializeCheats();

   148

   149

	InitTextEffects();

   150

	InitializeAnimatedTiles();

   151

   152

	InitializeLandscapeVariables(false);

   153

   154

	ResetObjectToPlace();

   155

}

   156

   157

void GenerateWorld(int mode)

   158

{

   159

	int i;

   160

   161

	_generating_world = true;

   162

	InitializeGame();

   163

	SetObjectToPlace(1, 0, 0, 0);

   164

   165

	// Must start economy early because of the costs.

   166

	StartupEconomy();

   167

   168

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

   169

	if (mode == 1) {

   170

		// empty world in scenario editor

   171

		ConvertGroundTilesIntoWaterTiles();

   172

	} else {

   173

		GenerateLandscape();

   174

		GenerateClearTile();

   175

   176

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

   177

		if (mode == 0) {

   178

			GenerateTowns();

   179

			GenerateTrees();

   180

			GenerateIndustries();

   181

			GenerateUnmovables();

   182

		}

   183

	}

   184

   185

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

   186

	StartupPlayers();

   187

	StartupEngines();

   188

	StartupDisasters();

   189

	_generating_world = false;

   190

   191

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

   192

	if (mode != 1) {

   193

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

   194

			RunTileLoop();

   195

	}

   196

   197

	ResetObjectToPlace();

   198

}

   199

   200

void DeleteName(StringID id)

   201

{

   202

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

   203

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

   204

	}

   205

}

   206

   207

byte *GetName(int id, byte *buff)

   208

{

   209

	byte *b;

   210

   211

	if (id & 0x600) {

   212

		if (id & 0x200) {

   213

			if (id & 0x400) {

   214

				GetParamInt32();

   215

				GetParamUint16();

   216

			} else {

   217

				GetParamUint16();

   218

			}

   219

		} else {

   220

			GetParamInt32();

   221

		}

   222

	}

   223

   224

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

   225

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

   226

   227

	return buff - 1;

   228

}

   229

   230

   231

void InitializeCheats()

   232

{

   233

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

   234

}

   235

   236

   237

void InitializeNameMgr()

   238

{

   239

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

   240

}

   241

   242

StringID AllocateName(const byte *name, byte skip)

   243

{

   244

	int free_item = -1;

   245

	const byte *names;

   246

	byte *dst;

   247

	int i;

   248

   249

	names = &_name_array[0][0];

   250

   251

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

   252

		if (names[0] == 0) {

   253

			if (free_item == -1)

   254

				free_item = i;

   255

		} else {

   256

			if (str_eq(names, name)) {

   257

				_error_message = STR_0132_CHOSEN_NAME_IN_USE_ALREADY;

   258

				return 0;

   259

			}

   260

		}

   261

	}

   262

   263

	if (free_item < 0) {

   264

		_error_message = STR_0131_TOO_MANY_NAMES_DEFINED;

   265

		return 0;

   266

	}

   267

   268

	dst=_name_array[free_item];

   269

   270

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

   271

	dst[31] = 0;

   272

   273

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

   274

}

   275

   276

const TileIndexDiff _tileoffs_by_dir[4] = {

   277

	TILE_XY(-1, 0),

   278

	TILE_XY(0, 1),

   279

	TILE_XY(1, 0),

   280

	TILE_XY(0, -1),

   281

};

   282

   283

   284

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

   285

static const uint16 _month_date_from_year_day[] = {

   286

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),

   287

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),

   288

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),

   289

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),

   290

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),

   291

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),

   292

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),

   293

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),

   294

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),

   295

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),

   296

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),

   297

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),

   298

};

   299

#undef M

   300

   301

enum {

   302

	ACCUM_JAN = 0,

   303

	ACCUM_FEB = ACCUM_JAN + 31,

   304

	ACCUM_MAR = ACCUM_FEB + 29,

   305

	ACCUM_APR = ACCUM_MAR + 31,

   306

	ACCUM_MAY = ACCUM_APR + 30,

   307

	ACCUM_JUN = ACCUM_MAY + 31,

   308

	ACCUM_JUL = ACCUM_JUN + 30,

   309

	ACCUM_AUG = ACCUM_JUL + 31,

   310

	ACCUM_SEP = ACCUM_AUG + 31,

   311

	ACCUM_OCT = ACCUM_SEP + 30,

   312

	ACCUM_NOV = ACCUM_OCT + 31,

   313

	ACCUM_DEC = ACCUM_NOV + 30,

   314

};

   315

   316

static const uint16 _accum_days_for_month[] = {

   317

	ACCUM_JAN,ACCUM_FEB,ACCUM_MAR,ACCUM_APR,

   318

	ACCUM_MAY,ACCUM_JUN,ACCUM_JUL,ACCUM_AUG,

   319

	ACCUM_SEP,ACCUM_OCT,ACCUM_NOV,ACCUM_DEC,

   320

};

   321

   322

   323

void ConvertDayToYMD(YearMonthDay *ymd, uint16 date)

   324

{

   325

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

   326

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

   327

	uint x;

   328

   329

	yr *= 4;

   330

   331

	if (rem >= 366) {

   332

		rem--;

   333

		do {

   334

			rem -= 365;

   335

			yr++;

   336

		} while (rem >= 365);

   337

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

   338

	}

   339

   340

	ymd->year = yr;

   341

   342

	x = _month_date_from_year_day[rem];

   343

	ymd->month = x >> 5;

   344

	ymd->day = x & 0x1F;

   345

}

   346

   347

// year is a number between 0..?

   348

// month is a number between 0..11

   349

// day is a number between 1..31

   350

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

   351

{

   352

	uint rem;

   353

   354

	// day in the year

   355

	rem = _accum_days_for_month[month] + day - 1;

   356

   357

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

   358

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

   359

   360

	// base date.

   361

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

   362

}

   363

   364

// convert a date on the form

   365

// 1920 - 2090

   366

// 192001 - 209012

   367

// 19200101 - 20901231

   368

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

   369

// returns -1 if no conversion was possible

   370

uint ConvertIntDate(uint date)

   371

{

   372

	uint year, month = 0, day = 1;

   373

   374

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

   375

		year = date - 1920;

   376

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

   377

		month = date % 100 - 1;

   378

		year = date / 100 - 1920;

   379

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

   380

		day = date % 100; date /= 100;

   381

		month = date % 100 - 1;

   382

		year = date / 100 - 1920;

   383

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

   384

		return date;

   385

	else

   386

		return (uint)-1;

   387

   388

	// invalid ranges?

   389

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

   390

   391

	return ConvertYMDToDay(year, month, day);

   392

}

   393

   394

typedef struct LandscapePredefVar {

   395

	StringID names[NUM_CARGO];

   396

	byte weights[NUM_CARGO];

   397

	StringID sprites[NUM_CARGO];

   398

   399

	uint16 initial_cargo_payment[NUM_CARGO];

   400

	byte transit_days_table_1[NUM_CARGO];

   401

	byte transit_days_table_2[NUM_CARGO];

   402

   403

	byte railwagon_by_cargo[3][NUM_CARGO];

   404

   405

	byte road_veh_by_cargo_start[NUM_CARGO];

   406

	byte road_veh_by_cargo_count[NUM_CARGO];

   407

} LandscapePredefVar;

   408

   409

#include "table/landscape_const.h"

   410

   411

   412

// Calculate constants that depend on the landscape type.

   413

void InitializeLandscapeVariables(bool only_constants)

   414

{

   415

	const LandscapePredefVar *lpd;

   416

	int i;

   417

	StringID str;

   418

   419

	lpd = &_landscape_predef_var[_opt.landscape];

   420

   421

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

   422

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

   423

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

   424

   425

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

   426

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

   427

   428

		str = lpd->names[i];

   429

		_cargoc.names_s[i] = str;

   430

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

   431

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

   432

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

   433

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

   434

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

   435

   436

		if (!only_constants) {

   437

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

   438

			_cargo_payment_rates_frac[i] = 0;

   439

		}

   440

   441

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

   442

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

   443

	}

   444

}

   445

   446

// distance in Manhattan metric

   447

uint GetTileDist(TileIndex xy1, TileIndex xy2)

   448

{

   449

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

   450

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

   451

}

   452

   453

// maximum distance in x _or_ y

   454

uint GetTileDist1D(TileIndex xy1, TileIndex xy2)

   455

{

   456

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

   457

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

   458

}

   459

   460

uint GetTileDist1Db(TileIndex xy1, TileIndex xy2)

   461

{

   462

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

   463

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

   464

   465

	if (a > b)

   466

		return a*2+b;

   467

	else

   468

		return b*2+a;

   469

}

   470

   471

uint GetTileDistAdv(TileIndex xy1, TileIndex xy2)

   472

{

   473

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

   474

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

   475

	return a*a+b*b;

   476

}

   477

   478

bool CheckDistanceFromEdge(TileIndex tile, uint distance)

   479

{

   480

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

   481

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

   482

}

   483

   484

void OnNewDay_Train(Vehicle *v);

   485

void OnNewDay_RoadVeh(Vehicle *v);

   486

void OnNewDay_Aircraft(Vehicle *v);

   487

void OnNewDay_Ship(Vehicle *v);

   488

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

   489

void OnNewDay_DisasterVehicle(Vehicle *v);

   490

   491

typedef void OnNewVehicleDayProc(Vehicle *v);

   492

   493

static OnNewVehicleDayProc * _on_new_vehicle_day_proc[] = {

   494

	OnNewDay_Train,

   495

	OnNewDay_RoadVeh,

   496

	OnNewDay_Ship,

   497

	OnNewDay_Aircraft,

   498

	OnNewDay_EffectVehicle,

   499

	OnNewDay_DisasterVehicle,

   500

};

   501

   502

void EnginesDailyLoop();

   503

void DisasterDailyLoop();

   504

void PlayersMonthlyLoop();

   505

void EnginesMonthlyLoop();

   506

void TownsMonthlyLoop();

   507

void IndustryMonthlyLoop();

   508

void StationMonthlyLoop();

   509

   510

void PlayersYearlyLoop();

   511

void TrainsYearlyLoop();

   512

void RoadVehiclesYearlyLoop();

   513

void AircraftYearlyLoop();

   514

void ShipsYearlyLoop();

   515

   516

void CheckpointsDailyLoop();

   517

   518

   519

static const uint16 _autosave_months[] = {

   520

	0, // never

   521

	0xFFF, // every month

   522

	0x249, // every 3 months

   523

	0x041, // every 6 months

   524

	0x001, // every 12 months