1

/* $Id$ */

     2

     3

#include "stdafx.h"

     4

#include "openttd.h"

     5

#include "debug.h"

     6

#include "functions.h"

     7

#include "table/sprites.h"

     8

#include "table/strings.h"

     9

#include "map.h"

    10

#include "tile.h"

    11

#include "station.h"

    12

#include "gfx.h"

    13

#include "window.h"

    14

#include "viewport.h"

    15

#include "command.h"

    16

#include "town.h"

    17

#include "vehicle.h"

    18

#include "news.h"

    19

#include "saveload.h"

    20

#include "economy.h"

    21

#include "player.h"

    22

#include "airport.h"

    23

#include "sprite.h"

    24

#include "depot.h"

    25

#include "pbs.h"

    26

    27

enum {

    28

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

    29

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

    30

	STATION_POOL_MAX_BLOCKS      = 1000,

    31

    32

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

    33

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

    34

	ROADSTOP_POOL_MAX_BLOCKS      = 2000,

    35

};

    36

    37

/**

    38

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

    39

 */

    40

static void StationPoolNewBlock(uint start_item)

    41

{

    42

	Station *st;

    43

    44

	FOR_ALL_STATIONS_FROM(st, start_item)

    45

		st->index = start_item++;

    46

}

    47

    48

/**

    49

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

    50

 */

    51

static void RoadStopPoolNewBlock(uint start_item)

    52

{

    53

	RoadStop *rs;

    54

    55

	FOR_ALL_ROADSTOPS_FROM(rs, start_item)

    56

		rs->index = start_item++;

    57

}

    58

    59

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

    60

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

    61

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

    62

    63

    64

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

    65

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

    66

const byte _airport_size_x[] = {4, 6, 1, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};

    67

const byte _airport_size_y[] = {3, 6, 1, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};

    68

    69

void ShowAircraftDepotWindow(TileIndex tile);

    70

extern void UpdateAirplanesOnNewStation(Station *st);

    71

    72

static void MarkStationDirty(Station *st)

    73

{

    74

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

    75

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

    76

    77

		MarkAllViewportsDirty(

    78

			st->sign.left - 6,

    79

			st->sign.top,

    80

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

    81

			st->sign.top + 48);

    82

	}

    83

}

    84

    85

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

    86

{

    87

	road_stop->xy = tile;

    88

	road_stop->used = true;

    89

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

    90

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

    91

	road_stop->next = NULL;

    92

	road_stop->prev = previous;

    93

	road_stop->station = index;

    94

}

    95

    96

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

    97

{

    98

	switch (type) {

    99

		case RS_BUS: return st->bus_stops;

   100

		case RS_TRUCK: return st->truck_stops;

   101

		default:

   102

			NOT_REACHED();

   103

	}

   104

   105

	return NULL;

   106

}

   107

   108

RoadStop * GetRoadStopByTile(TileIndex tile, RoadStopType type)

   109

{

   110

	const Station *st = GetStation(_m[tile].m2);

   111

	RoadStop *rs;

   112

   113

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

   114

		assert(rs->next != NULL);

   115

   116

	return rs;

   117

}

   118

   119

uint GetNumRoadStops(const Station *st, RoadStopType type)

   120

{

   121

	int num = 0;

   122

	const RoadStop *rs;

   123

   124

	assert(st != NULL);

   125

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

   126

   127

	return num;

   128

}

   129

   130

RoadStop *AllocateRoadStop( void )

   131

{

   132

	RoadStop *rs;

   133

   134

	FOR_ALL_ROADSTOPS(rs) {

   135

		if (!rs->used) {

   136

			uint index = rs->index;

   137

   138

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

   139

			rs->index = index;

   140

   141

			return rs;

   142

		}

   143

	}

   144

   145

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

   146

	if (AddBlockToPool(&_roadstop_pool))

   147

		return AllocateRoadStop();

   148

   149

	return NULL;

   150

}

   151

   152

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

   153

    radius that is available within the station */

   154

static byte FindCatchmentRadius(Station *st)

   155

{

   156

	byte ret = 0;

   157

   158

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

   159

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

   160

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

   161

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

   162

   163

	if (st->airport_tile) {

   164

		switch (st->airport_type) {

   165

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

   166

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

   167

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

   168

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

   169

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

   170

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

   171

		}

   172

	}

   173

   174

	return ret;

   175

}

   176

   177

#define CHECK_STATIONS_ERR ((Station*)-1)

   178

   179

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

   180

{

   181

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

   182

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

   183

		if (IsTileType(tile_cur, MP_STATION)) {

   184

			int t;

   185

			t = _m[tile_cur].m2;

   186

			{

   187

				Station *st = GetStation(t);

   188

				// you cannot take control of an oilrig!!

   189

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

   190

					continue;

   191

			}

   192

   193

			if (closest_station == -1) {

   194

				closest_station = t;

   195

			} else if (closest_station != t) {

   196

				_error_message = STR_3006_ADJOINS_MORE_THAN_ONE_EXISTING;

   197

				return CHECK_STATIONS_ERR;

   198

			}

   199

		}

   200

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

   201

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

   202

}

   203

   204

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

   205

{

   206

	switch (v->type) {

   207

		case VEH_Train: 		return st->train_tile;

   208

		case VEH_Aircraft:	return st->airport_tile;

   209

		case VEH_Ship:			return st->dock_tile;

   210

		case VEH_Road:

   211

			if (v->cargo_type == CT_PASSENGERS) {

   212

				if (st->bus_stops != NULL)

   213

					return st->bus_stops->xy;

   214

				else

   215

					return 0;

   216

			} else {

   217

				if (st->truck_stops != NULL)

   218

					return st->truck_stops->xy;

   219

				else

   220

					return 0;

   221

			}

   222

		default:

   223

			assert(false);

   224

			return 0;

   225

	}

   226

}

   227

   228

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

   229

{

   230

	StationID station_index = st->index;

   231

	uint i;

   232

	uint x1 = TileX(tile);

   233

	uint y1 = TileY(tile);

   234

	uint x2 = x1 + w - 1;

   235

	uint y2 = y1 + h - 1;

   236

	uint t;

   237

   238

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

   239

		if (IsTileType(i, MP_STATION) && _m[i].m2 == station_index) {

   240

			t = TileX(i);

   241

			if (t < x1) x1 = t;

   242

			if (t > x2) x2 = t;

   243

   244

			t = TileY(i);

   245

			if (t < y1) y1 = t;

   246

			if (t > y2) y2 = t;

   247

		}

   248

	}

   249

   250

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

   251

		_error_message = STR_306C_STATION_TOO_SPREAD_OUT;

   252

		return false;

   253

	}

   254

   255

	return true;

   256

}

   257

   258

static Station *AllocateStation(void)

   259

{

   260

	Station *st = NULL;

   261

   262

	FOR_ALL_STATIONS(st) {

   263

		if (st->xy == 0) {

   264

			StationID index = st->index;

   265

   266

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

   267

			st->index = index;

   268

   269

			return st;

   270

		}

   271

	}

   272

   273

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

   274

	if (AddBlockToPool(&_station_pool))

   275

		return AllocateStation();

   276

   277

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   278

	return NULL;

   279

}

   280

   281

   282

static int CountMapSquareAround(TileIndex tile, byte type, byte min, byte max)

   283

{

   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) && _m[tile].m5 >= min && _m[tile].m5 <= 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, TileIndex 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

			) {

   381

		found = _opt.landscape == LT_DESERT ?

   382

			M(STR_SV_STNAME_FOREST) : M(STR_SV_STNAME_WOODS);

   383

		goto done;

   384

	}

   385

   386

	/* check elevation compared to town */

   387

	z = GetTileZ(tile);

   388

	z2 = GetTileZ(t->xy);

   389

	if (z < z2) {

   390

		found = M(STR_SV_STNAME_VALLEY);

   391

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

   392

	} else if (z > z2) {

   393

		found = M(STR_SV_STNAME_HEIGHTS);

   394

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

   395

	}

   396

   397

	/* check direction compared to town */

   398

	{

   399

		static const int8 _direction_and_table[] = {

   400

			~( (1<<M(STR_SV_STNAME_WEST)) | (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_NORTH)) ),

   402

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

   403

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

   404

		};

   405

   406

		free_names &= _direction_and_table[

   407

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

   408

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

   409

	}

   410

   411

	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));

   412

	if (tmp == 0) {

   413

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   414

		return false;

   415

	}

   416

	found = FindFirstBit(tmp);

   417

   418

done:

   419

	st->string_id = found + STR_SV_STNAME;

   420

	return true;

   421

}

   422

#undef M

   423

   424

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

   425

{

   426

	Station* best_station = NULL;

   427

	Station* st;

   428

   429

	FOR_ALL_STATIONS(st) {

   430

		if (st->xy != 0 && (owner == OWNER_SPECTATOR || st->owner == owner)) {

   431

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

   432

   433

			if (cur_dist < threshold) {

   434

				threshold = cur_dist;

   435

				best_station = st;

   436

			}

   437

		}

   438

	}

   439

   440

	return best_station;

   441

}

   442

   443

static void StationInitialize(Station *st, TileIndex tile)

   444

{

   445

	GoodsEntry *ge;

   446

   447

	st->xy = tile;

   448

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

   449

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

   450

	st->had_vehicle_of_type = 0;

   451

	st->time_since_load = 255;

   452

	st->time_since_unload = 255;

   453

	st->delete_ctr = 0;

   454

	st->facilities = 0;

   455

   456

	st->last_vehicle = INVALID_VEHICLE;

   457

   458

	for (ge = st->goods; ge != endof(st->goods); ge++) {

   459

		ge->waiting_acceptance = 0;

   460

		ge->days_since_pickup = 0;

   461

		ge->enroute_from = INVALID_STATION;

   462

		ge->rating = 175;

   463

		ge->last_speed = 0;

   464

		ge->last_age = 0xFF;

   465

		ge->feeder_profit = 0;

   466

	}

   467

   468

	_global_station_sort_dirty = true; // build a new station

   469

}

   470

   471

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

   472

// st = Station to update for.

   473

static void UpdateStationVirtCoord(Station *st)

   474

{

   475

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

   476

   477

	pt.y -= 32;

   478

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

   479

   480

	SetDParam(0, st->index);

   481

	SetDParam(1, st->facilities);

   482

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

   483

}

   484

   485

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

   486

void UpdateAllStationVirtCoord(void)

   487

{

   488

	Station *st;

   489

	FOR_ALL_STATIONS(st) {

   490

		if (st->xy != 0)

   491

			UpdateStationVirtCoord(st);

   492

	}

   493

}

   494

   495

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

   496

static void UpdateStationVirtCoordDirty(Station *st)

   497

{

   498

	MarkStationDirty(st);

   499

	UpdateStationVirtCoord(st);

   500

	MarkStationDirty(st);

   501

}