1

#include "stdafx.h"

     2

#include "ttd.h"

     3

#include "debug.h"

     5

#include "table/strings.h"

     6

#include "map.h"

     7

#include "tile.h"

     8

#include "station.h"

     9

#include "gfx.h"

    10

#include "window.h"

    11

#include "viewport.h"

    12

#include "command.h"

    13

#include "town.h"

    14

#include "vehicle.h"

    15

#include "news.h"

    16

#include "saveload.h"

    17

#include "economy.h"

    18

#include "player.h"

    19

#include "airport.h"

    20

#include "sprite.h"

    21

#include "npf.h"

    22

#include "depot.h"

    23

    24

enum {

    25

	/* Max stations: 64000 (64 * 1000) */

    26

	STATION_POOL_BLOCK_SIZE_BITS = 6,       /* In bits, so (1 << 6) == 64 */

    27

	STATION_POOL_MAX_BLOCKS      = 1000,

    28

    29

	/* Max roadstops: 64000 (32 * 2000) */

    30

	ROADSTOP_POOL_BLOCK_SIZE_BITS = 5,       /* In bits, so (1 << 5) == 32 */

    31

	ROADSTOP_POOL_MAX_BLOCKS      = 2000,

    32

};

    33

    34

/**

    35

 * Called if a new block is added to the station-pool

    36

 */

    37

static void StationPoolNewBlock(uint start_item)

    38

{

    39

	Station *st;

    40

    41

	FOR_ALL_STATIONS_FROM(st, start_item)

    42

		st->index = start_item++;

    43

}

    44

    45

/**

    46

 * Called if a new block is added to the roadstop-pool

    47

 */

    48

static void RoadStopPoolNewBlock(uint start_item)

    49

{

    50

	RoadStop *rs;

    51

    52

	FOR_ALL_ROADSTOPS_FROM(rs, start_item)

    53

		rs->index = start_item++;

    54

}

    55

    56

/* Initialize the station-pool and roadstop-pool */

    57

MemoryPool _station_pool = { "Stations", STATION_POOL_MAX_BLOCKS, STATION_POOL_BLOCK_SIZE_BITS, sizeof(Station), &StationPoolNewBlock, 0, 0, NULL };

    58

MemoryPool _roadstop_pool = { "RoadStop", ROADSTOP_POOL_MAX_BLOCKS, ROADSTOP_POOL_BLOCK_SIZE_BITS, sizeof(RoadStop), &RoadStopPoolNewBlock, 0, 0, NULL };

    59

    60

    61

// FIXME -- need to be embedded into Airport variable. Is dynamically

    62

// deducteable from graphics-tile array, so will not be needed

    63

const byte _airport_size_x[5] = {4, 6, 1, 6, 7 };

    64

const byte _airport_size_y[5] = {3, 6, 1, 6, 7 };

    65

    66

void ShowAircraftDepotWindow(uint tile);

    67

extern void UpdateAirplanesOnNewStation(Station *st);

    68

    69

static void MarkStationDirty(Station *st)

    70

{

    71

	if (st->sign.width_1 != 0) {

    72

		InvalidateWindowWidget(WC_STATION_VIEW, st->index, 1);

    73

    74

		MarkAllViewportsDirty(

    75

			st->sign.left - 6,

    76

			st->sign.top,

    77

			st->sign.left + (st->sign.width_1 << 2) + 12,

    78

			st->sign.top + 48);

    79

	}

    80

}

    81

    82

static void InitializeRoadStop(RoadStop *road_stop, RoadStop *previous, TileIndex tile, uint index)

    83

{

    84

	road_stop->xy = tile;

    85

	road_stop->used = true;

    86

	road_stop->status = 3; //stop is free

    87

	road_stop->slot[0] = road_stop->slot[1] = INVALID_SLOT;

    88

	road_stop->next = NULL;

    89

	road_stop->prev = previous;

    90

	road_stop->station = index;

    91

}

    92

    93

inline int GetRoadStopType(TileIndex tile)

    94

{

    95

	return (_map5[tile] < 0x47) ? RS_TRUCK : RS_BUS;

    96

}

    97

    98

RoadStop * GetPrimaryRoadStop(const Station *st, RoadStopType type)

    99

{

   100

	switch (type) {

   101

		case RS_BUS: return st->bus_stops;

   102

		case RS_TRUCK: return st->truck_stops;

   103

		default:

   104

			NOT_REACHED();

   105

	}

   106

   107

	return NULL;

   108

}

   109

   110

RoadStop * GetRoadStopByTile(TileIndex tile, RoadStopType type)

   111

{

   112

	const Station *st = GetStation(_map2[tile]);

   113

	RoadStop *rs;

   114

   115

	for ( rs = GetPrimaryRoadStop(st, type); rs->xy != tile; rs = rs->next)

   116

		assert(rs->next != NULL);

   117

   118

	return rs;

   119

}

   120

   121

uint GetNumRoadStops(const Station *st, RoadStopType type)

   122

{

   123

	int num = 0;

   124

	const RoadStop *rs;

   125

   126

	assert(st != NULL);

   127

	for ( rs = GetPrimaryRoadStop(st, type); rs != NULL; num++, rs = rs->next);

   128

   129

	return num;

   130

}

   131

   132

RoadStop *AllocateRoadStop( void )

   133

{

   134

	RoadStop *rs;

   135

   136

	FOR_ALL_ROADSTOPS(rs) {

   137

		if (!rs->used) {

   138

			uint index = rs->index;

   139

   140

			memset(rs, 0, sizeof(RoadStop));

   141

			rs->index = index;

   142

   143

			return rs;

   144

		}

   145

	}

   146

   147

	/* Check if we can add a block to the pool */

   148

	if (AddBlockToPool(&_roadstop_pool))

   149

		return AllocateRoadStop();

   150

   151

	return NULL;

   152

}

   153

   154

/* Calculate the radius of the station. Basicly it is the biggest

   155

    radius that is available within the station */

   156

static byte FindCatchmentRadius(Station *st)

   157

{

   158

	byte ret = 0;

   159

   160

	if (st->bus_stops != NULL)   ret = max(ret, CA_BUS);

   161

	if (st->truck_stops != NULL) ret = max(ret, CA_TRUCK);

   162

	if (st->train_tile) ret = max(ret, CA_TRAIN);

   163

	if (st->dock_tile)  ret = max(ret, CA_DOCK);

   164

   165

	if (st->airport_tile) {

   166

		switch (st->airport_type) {

   167

			case AT_OILRIG:        ret = max(ret, CA_AIR_OILPAD);   break;

   168

			case AT_SMALL:         ret = max(ret, CA_AIR_SMALL);    break;

   169

			case AT_HELIPORT:      ret = max(ret, CA_AIR_HELIPORT); break;

   170

			case AT_LARGE:         ret = max(ret, CA_AIR_LARGE);    break;

   171

			case AT_METROPOLITAN:  ret = max(ret, CA_AIR_METRO);    break;

   172

			case AT_INTERNATIONAL: ret = max(ret, CA_AIR_INTER);    break;

   173

		}

   174

	}

   175

   176

	return ret;

   177

}

   178

   179

#define CHECK_STATIONS_ERR ((Station*)-1)

   180

   181

static Station *GetStationAround(uint tile, int w, int h, int closest_station)

   182

{

   183

	// check around to see if there's any stations there

   184

	BEGIN_TILE_LOOP(tile_cur, w + 2, h + 2, tile - TILE_XY(1,1))

   185

		if (IsTileType(tile_cur, MP_STATION)) {

   186

			int t;

   187

			t = _map2[tile_cur];

   188

			{

   189

				Station *st = GetStation(t);

   190

				// you cannot take control of an oilrig!!

   191

				if (st->airport_type == AT_OILRIG && st->facilities == (FACIL_AIRPORT|FACIL_DOCK))

   192

					continue;

   193

			}

   194

   195

			if (closest_station == -1) {

   196

				closest_station = t;

   197

			} else if (closest_station != t) {

   198

				_error_message = STR_3006_ADJOINS_MORE_THAN_ONE_EXISTING;

   199

				return CHECK_STATIONS_ERR;

   200

			}

   201

		}

   202

	END_TILE_LOOP(tile_cur, w + 2, h + 2, tile - TILE_XY(1,1))

   203

	return (closest_station == -1) ? NULL : GetStation(closest_station);

   204

}

   205

   206

TileIndex GetStationTileForVehicle(const Vehicle *v, const Station *st)

   207

{

   208

	switch (v->type) {

   209

		case VEH_Train: 		return st->train_tile;

   210

		case VEH_Aircraft:	return st->airport_tile;

   211

		case VEH_Ship:			return st->dock_tile;

   212

		case VEH_Road:

   213

			if (v->cargo_type == CT_PASSENGERS) {

   214

				if (st->bus_stops != NULL)

   215

					return st->bus_stops->xy;

   216

				else

   217

					return 0;

   218

			} else {

   219

				if (st->truck_stops != NULL)

   220

					return st->truck_stops->xy;

   221

				else

   222

					return 0;

   223

			}

   224

		default:

   225

			assert(false);

   226

			return 0;

   227

	}

   228

}

   229

   230

static bool CheckStationSpreadOut(Station *st, uint tile, int w, int h)

   231

{

   232

	uint16 station_index = st->index;

   233

	uint i;

   234

	uint x1 = TileX(tile);

   235

	uint y1 = TileY(tile);

   236

	uint x2 = x1 + w - 1;

   237

	uint y2 = y1 + h - 1;

   238

	uint t;

   239

   240

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

   241

		if (IsTileType(i, MP_STATION) && _map2[i] == station_index) {

   242

			t = TileX(i);

   243

			if (t < x1) x1 = t;

   244

			if (t > x2) x2 = t;

   245

   246

			t = TileY(i);

   247

			if (t < y1) y1 = t;

   248

			if (t > y2) y2 = t;

   249

		}

   250

	}

   251

   252

	if (y2-y1 >= _patches.station_spread || x2-x1 >= _patches.station_spread) {

   253

		_error_message = STR_306C_STATION_TOO_SPREAD_OUT;

   254

		return false;

   255

	}

   256

   257

	return true;

   258

}

   259

   260

static Station *AllocateStation(void)

   261

{

   262

	Station *st = NULL;

   263

   264

	FOR_ALL_STATIONS(st) {

   265

		if (st->xy == 0) {

   266

			uint index = st->index;

   267

   268

			memset(st, 0, sizeof(Station));

   269

			st->index = index;

   270

   271

			return st;

   272

		}

   273

	}

   274

   275

	/* Check if we can add a block to the pool */

   276

	if (AddBlockToPool(&_station_pool))

   277

		return AllocateStation();

   278

   279

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   280

	return NULL;

   281

}

   282

   283

   284

static int CountMapSquareAround(uint tile, byte type, byte min, byte max) {

   285

	static const TileIndexDiffC _count_square_table[] = {

   286

		{-3, -3}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},

   287

		{-6,  1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},

   288

		{-6,  1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},

   289

		{-6,  1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},

   290

		{-6,  1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},

   291

		{-6,  1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},

   292

		{-6,  1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}

   293

	};

   294

	const TileIndexDiffC *p;

   295

	int num = 0;

   296

   297

	for (p = _count_square_table; p != endof(_count_square_table); ++p) {

   298

		tile = TILE_MASK(tile + ToTileIndexDiff(*p));

   299

   300

		if (IsTileType(tile, type) && _map5[tile] >= min && _map5[tile] <= max)

   301

			num++;

   302

	}

   303

   304

	return num;

   305

}

   306

   307

#define M(x) ((x) - STR_SV_STNAME)

   308

   309

static bool GenerateStationName(Station *st, uint tile, int flag)

   310

{

   311

	static const uint32 _gen_station_name_bits[] = {

   312

		0,																/* 0 */

   313

		1 << M(STR_SV_STNAME_AIRPORT),		/* 1 */

   314

		1 << M(STR_SV_STNAME_OILFIELD),		/* 2 */

   315

		1 << M(STR_SV_STNAME_DOCKS),			/* 3 */

   316

		0x1FF << M(STR_SV_STNAME_BUOY_1),	/* 4 */

   317

		1 << M(STR_SV_STNAME_HELIPORT),		/* 5 */

   318

	};

   319

   320

	Town *t = st->town;

   321

	uint32 free_names = (uint32)-1;

   322

	int found;

   323

	uint z,z2;

   324

	unsigned long tmp;

   325

   326

	{

   327

		Station *s;

   328

   329

		FOR_ALL_STATIONS(s) {

   330

			if (s != st && s->xy != 0 && s->town==t) {

   331

				uint str = M(s->string_id);

   332

				if (str <= 0x20) {

   333

					if (str == M(STR_SV_STNAME_FOREST))

   334

						str = M(STR_SV_STNAME_WOODS);

   335

					CLRBIT(free_names, str);

   336

				}

   337

			}

   338

		}

   339

	}

   340

   341

	/* check default names */

   342

	tmp = free_names & _gen_station_name_bits[flag];

   343

	if (tmp != 0) {

   344

		found = FindFirstBit(tmp);

   345

		goto done;

   346

	}

   347

   348

	/* check mine? */

   349

	if (HASBIT(free_names, M(STR_SV_STNAME_MINES))) {

   350

		if (CountMapSquareAround(tile, MP_INDUSTRY, 0, 6) >= 2 ||

   351

		    CountMapSquareAround(tile, MP_INDUSTRY, 0x64, 0x73) >= 2 ||

   352

				CountMapSquareAround(tile, MP_INDUSTRY, 0x2F, 0x33) >= 2 ||

   353

				CountMapSquareAround(tile, MP_INDUSTRY, 0x48, 0x58) >= 2 ||

   354

				CountMapSquareAround(tile, MP_INDUSTRY, 0x5B, 0x63) >= 2) {

   355

					found = M(STR_SV_STNAME_MINES);

   356

					goto done;

   357

				}

   358

	}

   359

   360

	/* check close enough to town to get central as name? */

   361

	if (DistanceMax(tile,t->xy) < 8) {

   362

		found = M(STR_SV_STNAME);

   363

		if (HASBIT(free_names, M(STR_SV_STNAME))) goto done;

   364

   365

		found = M(STR_SV_STNAME_CENTRAL);

   366

		if (HASBIT(free_names, M(STR_SV_STNAME_CENTRAL))) goto done;

   367

	}

   368

   369

	/* Check lakeside */

   370

	if (HASBIT(free_names, M(STR_SV_STNAME_LAKESIDE)) &&

   371

			DistanceFromEdge(tile) < 20 &&

   372

			CountMapSquareAround(tile, MP_WATER, 0, 0) >= 5) {

   373

				found = M(STR_SV_STNAME_LAKESIDE);

   374

				goto done;

   375

			}

   376

   377

	/* Check woods */

   378

	if (HASBIT(free_names, M(STR_SV_STNAME_WOODS)) && (

   379

			CountMapSquareAround(tile, MP_TREES, 0, 255) >= 8 ||

   380

			CountMapSquareAround(tile, MP_INDUSTRY, 0x10, 0x11) >= 2 )) {

   381

				found = (_opt.landscape==LT_DESERT) ? M(STR_SV_STNAME_FOREST) : M(STR_SV_STNAME_WOODS);

   382

				goto done;

   383

	}

   384

   385

	/* check elevation compared to town */

   386

	z = GetTileZ(tile);

   387

	z2 = GetTileZ(t->xy);

   388

	if (z < z2) {

   389

		found = M(STR_SV_STNAME_VALLEY);

   390

		if (HASBIT(free_names, M(STR_SV_STNAME_VALLEY))) goto done;

   391

	} else if (z > z2) {

   392

		found = M(STR_SV_STNAME_HEIGHTS);

   393

		if (HASBIT(free_names, M(STR_SV_STNAME_HEIGHTS))) goto done;

   394

	}

   395

   396

	/* check direction compared to town */

   397

	{

   398

		static const int8 _direction_and_table[] = {

   399

			~( (1<<M(STR_SV_STNAME_WEST)) | (1<<M(STR_SV_STNAME_EAST)) | (1<<M(STR_SV_STNAME_NORTH)) ),

   400

			~( (1<<M(STR_SV_STNAME_SOUTH)) | (1<<M(STR_SV_STNAME_WEST)) | (1<<M(STR_SV_STNAME_NORTH)) ),

   401

			~( (1<<M(STR_SV_STNAME_SOUTH)) | (1<<M(STR_SV_STNAME_EAST)) | (1<<M(STR_SV_STNAME_NORTH)) ),

   402

			~( (1<<M(STR_SV_STNAME_SOUTH)) | (1<<M(STR_SV_STNAME_WEST)) | (1<<M(STR_SV_STNAME_EAST)) ),

   403

		};

   404

   405

		free_names &= _direction_and_table[

   406

			(TileX(tile) < TileX(t->xy)) +

   407

			(TileY(tile) < TileY(t->xy)) * 2];

   408

	}

   409

   410

	tmp = free_names & ((1<<1)|(1<<2)|(1<<3)|(1<<4)|(1<<6)|(1<<7)|(1<<12)|(1<<26)|(1<<27)|(1<<28)|(1<<29)|(1<<30));

   411

	if (tmp == 0) {

   412

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   413

		return false;

   414

	}

   415

	found = FindFirstBit(tmp);

   416

   417

done:

   418

	st->string_id = found + STR_SV_STNAME;

   419

	return true;

   420

}

   421

#undef M

   422

   423

static Station *GetClosestStationFromTile(uint tile, uint threshold, byte owner)

   424

{

   425

	Station *st, *best_station = NULL;

   426

	uint cur_dist;

   427

   428

	FOR_ALL_STATIONS(st) {

   429

		cur_dist = DistanceManhattan(tile, st->xy);

   430

		if (cur_dist < threshold && (owner == 0xFF || st->owner == owner) && (st->xy != 0)) {

   431

			threshold = cur_dist;

   432

			best_station = st;

   433

		}

   434

	}

   435

   436

	return best_station;

   437

}

   438

   439

static void StationInitialize(Station *st, TileIndex tile)

   440

{

   441

	int i;

   442

	GoodsEntry *ge;

   443

   444

	st->xy = tile;

   445

	st->airport_tile = st->dock_tile = st->train_tile = 0;

   446

	st->bus_stops = st->truck_stops = NULL;

   447

	st->had_vehicle_of_type = 0;

   448

	st->time_since_load = 255;

   449

	st->time_since_unload = 255;

   450

	st->delete_ctr = 0;

   451

	st->facilities = 0;

   452

   453

	st->last_vehicle = INVALID_VEHICLE;

   454

   455

	for(i=0,ge=st->goods; i!=NUM_CARGO; i++, ge++) {

   456

		ge->waiting_acceptance = 0;

   457

		ge->days_since_pickup = 0;

   458

		ge->enroute_from = INVALID_STATION;

   459

		ge->rating = 175;

   460

		ge->last_speed = 0;

   461

		ge->last_age = 0xFF;

   462

	}

   463

   464

	_global_station_sort_dirty = true; // build a new station

   465

}

   466

   467

// Update the virtual coords needed to draw the station sign.

   468

// st = Station to update for.

   469

static void UpdateStationVirtCoord(Station *st)

   470

{

   471

	Point pt = RemapCoords2(TileX(st->xy) * 16, TileY(st->xy) * 16);

   472

   473

	pt.y -= 32;

   474

	if (st->facilities & FACIL_AIRPORT && st->airport_type == AT_OILRIG) pt.y -= 16;

   475

   476

	SetDParam(0, st->index);

   477

	SetDParam(1, st->facilities);

   478

	UpdateViewportSignPos(&st->sign, pt.x, pt.y, STR_305C_0);

   479

}

   480

   481

// Update the virtual coords needed to draw the station sign for all stations.

   482

void UpdateAllStationVirtCoord(void)

   483

{

   484

	Station *st;

   485

	FOR_ALL_STATIONS(st) {

   486

		if (st->xy != 0)

   487

			UpdateStationVirtCoord(st);

   488

	}

   489

}

   490

   491

// Update the station virt coords while making the modified parts dirty.

   492

static void UpdateStationVirtCoordDirty(Station *st)

   493

{

   494

	MarkStationDirty(st);

   495

	UpdateStationVirtCoord(st);

   496

	MarkStationDirty(st);

   497

}

   498

   499

// Get a mask of the cargo types that the station accepts.

   500

static uint GetAcceptanceMask(Station *st)

   501

{

   502

	uint mask = 0;

   503

	uint cur_mask = 1;

   504

	int i;

   505

	for(i=0; i!=NUM_CARGO; i++,cur_mask*=2) {

   506

		if (st->goods[i].waiting_acceptance & 0x8000)

   507

			mask |= cur_mask;