1

/* $Id$ */

     2

     3

/** @file station_cmd.c

     4

  */

     5

     6

#include "stdafx.h"

     7

#include "openttd.h"

     8

#include "debug.h"

     9

#include "functions.h"

    10

#include "table/sprites.h"

    11

#include "table/strings.h"

    12

#include "map.h"

    13

#include "tile.h"

    14

#include "station.h"

    15

#include "gfx.h"

    16

#include "window.h"

    17

#include "viewport.h"

    18

#include "command.h"

    19

#include "town.h"

    20

#include "vehicle.h"

    21

#include "news.h"

    22

#include "saveload.h"

    23

#include "economy.h"

    24

#include "player.h"

    25

#include "airport.h"

    26

#include "sprite.h"

    27

#include "depot.h"

    28

#include "pbs.h"

    29

#include "train.h"

    30

#include "ai/ai_event.h"

    31

    32

enum {

    33

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

    34

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

    35

	STATION_POOL_MAX_BLOCKS      = 1000,

    36

    37

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

    38

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

    39

	ROADSTOP_POOL_MAX_BLOCKS      = 2000,

    40

};

    41

    42

/**

    43

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

    44

 */

    45

static void StationPoolNewBlock(uint start_item)

    46

{

    47

	Station *st;

    48

    49

	FOR_ALL_STATIONS_FROM(st, start_item) st->index = start_item++;

    50

}

    51

    52

/**

    53

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

    54

 */

    55

static void RoadStopPoolNewBlock(uint start_item)

    56

{

    57

	RoadStop *rs;

    58

    59

	FOR_ALL_ROADSTOPS_FROM(rs, start_item) rs->index = start_item++;

    60

}

    61

    62

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

    63

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

    64

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

    65

    66

    67

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

    68

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

    69

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

    70

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

    71

    72

void ShowAircraftDepotWindow(TileIndex tile);

    73

extern void UpdateAirplanesOnNewStation(Station *st);

    74

    75

static void MarkStationDirty(const Station* st)

    76

{

    77

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

    78

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

    79

    80

		MarkAllViewportsDirty(

    81

			st->sign.left - 6,

    82

			st->sign.top,

    83

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

    84

			st->sign.top + 48);

    85

	}

    86

}

    87

    88

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

    89

{

    90

	road_stop->xy = tile;

    91

	road_stop->used = true;

    92

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

    93

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

    94

	road_stop->next = NULL;

    95

	road_stop->prev = previous;

    96

	road_stop->station = index;

    97

}

    98

    99

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

   100

{

   101

	switch (type) {

   102

		case RS_BUS:   return st->bus_stops;

   103

		case RS_TRUCK: return st->truck_stops;

   104

		default: NOT_REACHED();

   105

	}

   106

   107

	return NULL;

   108

}

   109

   110

RoadStop* GetRoadStopByTile(TileIndex tile, RoadStopType type)

   111

{

   112

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

   113

	RoadStop* rs;

   114

   115

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

   116

		assert(rs->next != NULL);

   117

	}

   118

   119

	return rs;

   120

}

   121

   122

uint GetNumRoadStops(const Station *st, RoadStopType type)

   123

{

   124

	uint num = 0;

   125

	const RoadStop *rs;

   126

   127

	assert(st != NULL);

   128

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

   129

   130

	return num;

   131

}

   132

   133

RoadStop *AllocateRoadStop(void)

   134

{

   135

	RoadStop *rs;

   136

   137

	FOR_ALL_ROADSTOPS(rs) {

   138

		if (!rs->used) {

   139

			uint index = rs->index;

   140

   141

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

   142

			rs->index = index;

   143

   144

			return rs;

   145

		}

   146

	}

   147

   148

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

   149

	if (AddBlockToPool(&_roadstop_pool)) 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 uint FindCatchmentRadius(const Station* st)

   157

{

   158

	uint 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(TileIndex tile, int w, int h, StationID 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 - TileDiffXY(1, 1))

   185

		if (IsTileType(tile_cur, MP_STATION)) {

   186

			StationID t = _m[tile_cur].m2;

   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 == INVALID_STATION) {

   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 - TileDiffXY(1, 1))

   202

	return (closest_station == INVALID_STATION) ? 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

				return (st->bus_stops != NULL) ? st->bus_stops->xy : 0;

   214

			} else {

   215

				return (st->truck_stops != NULL) ? st->truck_stops->xy : 0;

   216

			}

   217

		default:

   218

			assert(false);

   219

			return 0;

   220

	}

   221

}

   222

   223

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

   224

{

   225

	StationID station_index = st->index;

   226

	uint i;

   227

	uint x1 = TileX(tile);

   228

	uint y1 = TileY(tile);

   229

	uint x2 = x1 + w - 1;

   230

	uint y2 = y1 + h - 1;

   231

	uint t;

   232

   233

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

   234

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

   235

			t = TileX(i);

   236

			if (t < x1) x1 = t;

   237

			if (t > x2) x2 = t;

   238

   239

			t = TileY(i);

   240

			if (t < y1) y1 = t;

   241

			if (t > y2) y2 = t;

   242

		}

   243

	}

   244

   245

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

   246

		_error_message = STR_306C_STATION_TOO_SPREAD_OUT;

   247

		return false;

   248

	}

   249

   250

	return true;

   251

}

   252

   253

static Station *AllocateStation(void)

   254

{

   255

	Station *st = NULL;

   256

   257

	FOR_ALL_STATIONS(st) {

   258

		if (st->xy == 0) {

   259

			StationID index = st->index;

   260

   261

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

   262

			st->index = index;

   263

   264

			return st;

   265

		}

   266

	}

   267

   268

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

   269

	if (AddBlockToPool(&_station_pool)) return AllocateStation();

   270

   271

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   272

	return NULL;

   273

}

   274

   275

   276

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

   277

{

   278

	static const TileIndexDiffC _count_square_table[] = {

   279

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

   280

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

   281

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

   282

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

   283

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

   284

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

   285

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

   286

	};

   287

	const TileIndexDiffC *p;

   288

	int num = 0;

   289

   290

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

   291

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

   292

   293

		if (IsTileType(tile, type) && _m[tile].m5 >= min && _m[tile].m5 <= max)

   294

			num++;

   295

	}

   296

   297

	return num;

   298

}

   299

   300

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

   301

   302

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

   303

{

   304

	static const uint32 _gen_station_name_bits[] = {

   305

		0,                                      /* 0 */

   306

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

   307

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

   308

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

   309

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

   310

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

   311

	};

   312

   313

	Town *t = st->town;

   314

	uint32 free_names = (uint32)-1;

   315

	int found;

   316

	uint z,z2;

   317

	unsigned long tmp;

   318

   319

	{

   320

		Station *s;

   321

   322

		FOR_ALL_STATIONS(s) {

   323

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

   324

				uint str = M(s->string_id);

   325

				if (str <= 0x20) {

   326

					if (str == M(STR_SV_STNAME_FOREST))

   327

						str = M(STR_SV_STNAME_WOODS);

   328

					CLRBIT(free_names, str);

   329

				}

   330

			}

   331

		}

   332

	}

   333

   334

	/* check default names */

   335

	tmp = free_names & _gen_station_name_bits[flag];

   336

	if (tmp != 0) {

   337

		found = FindFirstBit(tmp);

   338

		goto done;

   339

	}

   340

   341

	/* check mine? */

   342

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

   343

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

   344

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

   345

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

   346

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

   347

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

   348

			found = M(STR_SV_STNAME_MINES);

   349

			goto done;

   350

		}

   351

	}

   352

   353

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

   354

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

   355

		found = M(STR_SV_STNAME);

   356

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

   357

   358

		found = M(STR_SV_STNAME_CENTRAL);

   359

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

   360

	}

   361

   362

	/* Check lakeside */

   363

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

   364

			DistanceFromEdge(tile) < 20 &&

   365

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

   366

		found = M(STR_SV_STNAME_LAKESIDE);

   367

		goto done;

   368

	}

   369

   370

	/* Check woods */

   371

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

   372

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

   373

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

   374

			) {

   375

		found = _opt.landscape == LT_DESERT ?

   376

			M(STR_SV_STNAME_FOREST) : M(STR_SV_STNAME_WOODS);

   377

		goto done;

   378

	}

   379

   380

	/* check elevation compared to town */

   381

	z = GetTileZ(tile);

   382

	z2 = GetTileZ(t->xy);

   383

	if (z < z2) {

   384

		found = M(STR_SV_STNAME_VALLEY);

   385

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

   386

	} else if (z > z2) {

   387

		found = M(STR_SV_STNAME_HEIGHTS);

   388

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

   389

	}

   390

   391

	/* check direction compared to town */

   392

	{

   393

		static const int8 _direction_and_table[] = {

   394

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

   395

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

   396

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

   397

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

   398

		};

   399

   400

		free_names &= _direction_and_table[

   401

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

   402

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

   403

	}

   404

   405

	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));

   406

	if (tmp == 0) {

   407

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   408

		return false;

   409

	}

   410

	found = FindFirstBit(tmp);

   411

   412

done:

   413

	st->string_id = found + STR_SV_STNAME;

   414

	return true;

   415

}

   416

#undef M

   417

   418

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

   419

{

   420

	Station* best_station = NULL;

   421

	Station* st;

   422

   423

	FOR_ALL_STATIONS(st) {

   424

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

   425

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

   426

   427

			if (cur_dist < threshold) {

   428

				threshold = cur_dist;

   429

				best_station = st;

   430

			}

   431

		}

   432

	}

   433

   434

	return best_station;

   435

}

   436

   437

static void StationInitialize(Station *st, TileIndex tile)

   438

{

   439

	GoodsEntry *ge;

   440

   441

	st->xy = tile;

   442

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

   443

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

   444

	st->had_vehicle_of_type = 0;

   445

	st->time_since_load = 255;

   446

	st->time_since_unload = 255;

   447

	st->delete_ctr = 0;

   448

	st->facilities = 0;

   449

   450

	st->last_vehicle = INVALID_VEHICLE;

   451

   452

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

   453

		ge->waiting_acceptance = 0;

   454

		ge->days_since_pickup = 0;

   455

		ge->enroute_from = INVALID_STATION;

   456

		ge->rating = 175;

   457

		ge->last_speed = 0;

   458

		ge->last_age = 0xFF;

   459

		ge->feeder_profit = 0;

   460

	}

   461

   462

	_global_station_sort_dirty = true; // build a new station

   463

}

   464

   465

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

   466

// st = Station to update for.

   467

static void UpdateStationVirtCoord(Station *st)

   468

{

   469

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

   470

   471

	pt.y -= 32;

   472

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

   473

   474

	SetDParam(0, st->index);

   475

	SetDParam(1, st->facilities);

   476

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

   477

}

   478

   479

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

   480

void UpdateAllStationVirtCoord(void)

   481

{

   482

	Station* st;

   483

   484

	FOR_ALL_STATIONS(st) {

   485

		if (st->xy != 0) UpdateStationVirtCoord(st);

   486

	}

   487

}

   488

   489

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

   490

static void UpdateStationVirtCoordDirty(Station *st)

   491

{

   492

	MarkStationDirty(st);

   493

	UpdateStationVirtCoord(st);

   494

	MarkStationDirty(st);

   495

}

   496

   497

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

   498

static uint GetAcceptanceMask(const Station *st)

   499

{