1

#include "stdafx.h"

     2

#include "ttd.h"

     3

#include "debug.h"

     4

#include "table/strings.h"

     5

#include "map.h"

     6

#include "tile.h"

     7

#include "station.h"

     8

#include "gfx.h"

     9

#include "window.h"

    10

#include "viewport.h"

    11

#include "command.h"

    12

#include "town.h"

    13

#include "vehicle.h"

    14

#include "news.h"

    15

#include "saveload.h"

    16

#include "economy.h"

    17

#include "player.h"

    18

#include "airport.h"

    19

#include "sprite.h"

    20

#include "npf.h"

    21

#include "depot.h"

    22

    23

enum {

    24

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

    25

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

    26

	STATION_POOL_MAX_BLOCKS      = 1000,

    27

    28

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

    29

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

    30

	ROADSTOP_POOL_MAX_BLOCKS      = 2000,

    31

};

    32

    33

/**

    34

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

    35

 */

    36

static void StationPoolNewBlock(uint start_item)

    37

{

    38

	Station *st;

    39

    40

	FOR_ALL_STATIONS_FROM(st, start_item)

    41

		st->index = start_item++;

    42

}

    43

    44

/**

    45

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

    46

 */

    47

static void RoadStopPoolNewBlock(uint start_item)

    48

{

    49

	RoadStop *rs;

    50

    51

	FOR_ALL_ROADSTOPS_FROM(rs, start_item)

    52

		rs->index = start_item++;

    53

}

    54

    55

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

    56

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

    57

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

    58

    59

    60

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

    61

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

    62

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

    63

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

    64

    65

void ShowAircraftDepotWindow(uint tile);

    66

extern void UpdateAirplanesOnNewStation(Station *st);

    67

    68

static void MarkStationDirty(Station *st)

    69

{

    70

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

    71

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

    72

    73

		MarkAllViewportsDirty(

    74

			st->sign.left - 6,

    75

			st->sign.top,

    76

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

    77

			st->sign.top + 48);

    78

	}

    79

}

    80

    81

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

    82

{

    83

	road_stop->xy = tile;

    84

	road_stop->used = true;

    85

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

    86

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

    87

	road_stop->next = NULL;

    88

	road_stop->prev = previous;

    89

	road_stop->station = index;

    90

}

    91

    92

inline int GetRoadStopType(TileIndex tile)

    93

{

    94

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

    95

}

    96

    97

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

    98

{

    99

	switch (type) {

   100

		case RS_BUS: return st->bus_stops;

   101

		case RS_TRUCK: return st->truck_stops;

   102

		default:

   103

			NOT_REACHED();

   104

	}

   105

   106

	return NULL;

   107

}

   108

   109

RoadStop * GetRoadStopByTile(TileIndex tile, RoadStopType type)

   110

{

   111

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

   112

	RoadStop *rs;

   113

   114

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

   115

		assert(rs->next != NULL);

   116

   117

	return rs;

   118

}

   119

   120

uint GetNumRoadStops(const Station *st, RoadStopType type)

   121

{

   122

	int num = 0;

   123

	const RoadStop *rs;

   124

   125

	assert(st != NULL);

   126

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

   127

   128

	return num;

   129

}

   130

   131

RoadStop *AllocateRoadStop( void )

   132

{

   133

	RoadStop *rs;

   134

   135

	FOR_ALL_ROADSTOPS(rs) {

   136

		if (!rs->used) {

   137

			uint index = rs->index;

   138

   139

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

   140

			rs->index = index;

   141

   142

			return rs;

   143

		}

   144

	}

   145

   146

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

   147

	if (AddBlockToPool(&_roadstop_pool))

   148

		return AllocateRoadStop();

   149

   150

	return NULL;

   151

}

   152

   153

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

   154

    radius that is available within the station */

   155

static byte FindCatchmentRadius(Station *st)

   156

{

   157

	byte ret = 0;

   158

   159

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

   160

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

   161

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

   162

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

   163

   164

	if (st->airport_tile) {

   165

		switch (st->airport_type) {

   166

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

   167

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

   168

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

   169

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

   170

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

   171

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

   172

		}

   173

	}

   174

   175

	return ret;

   176

}

   177

   178

#define CHECK_STATIONS_ERR ((Station*)-1)

   179

   180

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

   181

{

   182

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

   183

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

   184

		if (IsTileType(tile_cur, MP_STATION)) {

   185

			int t;

   186

			t = _map2[tile_cur];

   187

			{

   188

				Station *st = GetStation(t);

   189

				// you cannot take control of an oilrig!!

   190

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

   191

					continue;

   192

			}

   193

   194

			if (closest_station == -1) {

   195

				closest_station = t;

   196

			} else if (closest_station != t) {

   197

				_error_message = STR_3006_ADJOINS_MORE_THAN_ONE_EXISTING;

   198

				return CHECK_STATIONS_ERR;

   199

			}

   200

		}

   201

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

   202

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

   203

}

   204

   205

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

   206

{

   207

	switch (v->type) {

   208

		case VEH_Train: 		return st->train_tile;

   209

		case VEH_Aircraft:	return st->airport_tile;

   210

		case VEH_Ship:			return st->dock_tile;

   211

		case VEH_Road:

   212

			if (v->cargo_type == CT_PASSENGERS) {

   213

				if (st->bus_stops != NULL)

   214

					return st->bus_stops->xy;

   215

				else

   216

					return 0;

   217

			} else {

   218

				if (st->truck_stops != NULL)

   219

					return st->truck_stops->xy;

   220

				else

   221

					return 0;

   222

			}

   223

		default:

   224

			assert(false);

   225

			return 0;

   226

	}

   227

}

   228

   229

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

   230

{

   231

	uint16 station_index = st->index;

   232

	uint i;

   233

	uint x1 = TileX(tile);

   234

	uint y1 = TileY(tile);

   235

	uint x2 = x1 + w - 1;

   236

	uint y2 = y1 + h - 1;

   237

	uint t;

   238

   239

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

   240

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

   241

			t = TileX(i);

   242

			if (t < x1) x1 = t;

   243

			if (t > x2) x2 = t;

   244

   245

			t = TileY(i);

   246

			if (t < y1) y1 = t;

   247

			if (t > y2) y2 = t;

   248

		}

   249

	}

   250

   251

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

   252

		_error_message = STR_306C_STATION_TOO_SPREAD_OUT;

   253

		return false;

   254

	}

   255

   256

	return true;

   257

}

   258

   259

static Station *AllocateStation(void)

   260

{

   261

	Station *st = NULL;

   262

   263

	FOR_ALL_STATIONS(st) {

   264

		if (st->xy == 0) {

   265

			uint index = st->index;

   266

   267

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

   268

			st->index = index;

   269

   270

			return st;

   271

		}

   272

	}

   273

   274

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

   275

	if (AddBlockToPool(&_station_pool))

   276

		return AllocateStation();

   277

   278

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   279

	return NULL;

   280

}

   281

   282

   283

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

   284

	static const TileIndexDiffC _count_square_table[] = {

   285

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

   286

		{-6,  1}, {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

	};

   293

	const TileIndexDiffC *p;

   294

	int num = 0;

   295

   296

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

   297

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

   298

   299

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

   300

			num++;

   301

	}

   302

   303

	return num;

   304

}

   305

   306

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

   307

   308

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

   309

{

   310

	static const uint32 _gen_station_name_bits[] = {

   311

		0,																/* 0 */

   312

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

   313

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

   314

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

   315

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

   316

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

   317

	};

   318

   319

	Town *t = st->town;

   320

	uint32 free_names = (uint32)-1;

   321

	int found;

   322

	uint z,z2;

   323

	unsigned long tmp;

   324

   325

	{

   326

		Station *s;

   327

   328

		FOR_ALL_STATIONS(s) {

   329

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

   330

				uint str = M(s->string_id);

   331

				if (str <= 0x20) {

   332

					if (str == M(STR_SV_STNAME_FOREST))

   333

						str = M(STR_SV_STNAME_WOODS);

   334

					CLRBIT(free_names, str);

   335

				}

   336

			}

   337

		}

   338

	}

   339

   340

	/* check default names */

   341

	tmp = free_names & _gen_station_name_bits[flag];

   342

	if (tmp != 0) {

   343

		found = FindFirstBit(tmp);

   344

		goto done;

   345

	}

   346

   347

	/* check mine? */

   348

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

   349

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

   350

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

   351

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

   352

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

   353

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

   354

					found = M(STR_SV_STNAME_MINES);

   355

					goto done;

   356

				}

   357

	}

   358

   359

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

   360

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

   361

		found = M(STR_SV_STNAME);

   362

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

   363

   364

		found = M(STR_SV_STNAME_CENTRAL);

   365

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

   366

	}

   367

   368

	/* Check lakeside */

   369

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

   370

			DistanceFromEdge(tile) < 20 &&

   371

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

   372

				found = M(STR_SV_STNAME_LAKESIDE);

   373

				goto done;

   374

			}

   375

   376

	/* Check woods */

   377

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

   378

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

   379

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

   380

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

   381

				goto done;

   382

	}

   383

   384

	/* check elevation compared to town */

   385

	z = GetTileZ(tile);

   386

	z2 = GetTileZ(t->xy);

   387

	if (z < z2) {

   388

		found = M(STR_SV_STNAME_VALLEY);

   389

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

   390

	} else if (z > z2) {

   391

		found = M(STR_SV_STNAME_HEIGHTS);

   392

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

   393

	}

   394

   395

	/* check direction compared to town */

   396

	{

   397

		static const int8 _direction_and_table[] = {

   398

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

   399

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

   400

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

   401

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

   402

		};

   403

   404

		free_names &= _direction_and_table[

   405

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

   406

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

   407

	}

   408

   409

	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));

   410

	if (tmp == 0) {

   411

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   412

		return false;

   413

	}

   414

	found = FindFirstBit(tmp);

   415

   416

done:

   417

	st->string_id = found + STR_SV_STNAME;

   418

	return true;

   419

}

   420

#undef M

   421

   422

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

   423

{

   424

	Station *st, *best_station = NULL;

   425

	uint cur_dist;

   426

   427

	FOR_ALL_STATIONS(st) {

   428

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

   429

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

   430

			threshold = cur_dist;

   431

			best_station = st;

   432

		}

   433

	}

   434

   435

	return best_station;

   436

}

   437

   438

static void StationInitialize(Station *st, TileIndex tile)

   439

{

   440

	int i;

   441

	GoodsEntry *ge;

   442

   443

	st->xy = tile;

   444

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

   445

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

   446

	st->had_vehicle_of_type = 0;

   447

	st->time_since_load = 255;

   448

	st->time_since_unload = 255;

   449

	st->delete_ctr = 0;

   450

	st->facilities = 0;

   451

   452

	st->last_vehicle = INVALID_VEHICLE;

   453

   454

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

   455

		ge->waiting_acceptance = 0;

   456

		ge->days_since_pickup = 0;

   457

		ge->enroute_from = INVALID_STATION;

   458

		ge->rating = 175;

   459

		ge->last_speed = 0;

   460

		ge->last_age = 0xFF;

   461

	}

   462

   463

	_global_station_sort_dirty = true; // build a new station

   464

}

   465

   466

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

   467

// st = Station to update for.

   468

static void UpdateStationVirtCoord(Station *st)

   469

{

   470

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

   471

   472

	pt.y -= 32;

   473

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

   474

   475

	SetDParam(0, st->index);

   476

	SetDParam(1, st->facilities);

   477

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

   478

}

   479

   480

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

   481

void UpdateAllStationVirtCoord(void)

   482

{

   483

	Station *st;

   484

	FOR_ALL_STATIONS(st) {

   485

		if (st->xy != 0)

   486

			UpdateStationVirtCoord(st);

   487

	}

   488

}

   489

   490

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

   491

static void UpdateStationVirtCoordDirty(Station *st)

   492

{

   493

	MarkStationDirty(st);

   494

	UpdateStationVirtCoord(st);

   495

	MarkStationDirty(st);

   496

}

   497

   498

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

   499

static uint GetAcceptanceMask(Station *st)

   500

{

   501

	uint mask = 0;

   502

	uint cur_mask = 1;

   503

	int i;

   504

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

   505

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

   506

			mask |= cur_mask;

   507

	}