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 "train.h"

    29

    30

enum {

    31

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

    32

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

    33

	STATION_POOL_MAX_BLOCKS      = 1000,

    34

    35

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

    36

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

    37

	ROADSTOP_POOL_MAX_BLOCKS      = 2000,

    38

};

    39

    40

/**

    41

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

    42

 */

    43

static void StationPoolNewBlock(uint start_item)

    44

{

    45

	Station *st;

    46

    47

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

    48

}

    49

    50

/**

    51

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

    52

 */

    53

static void RoadStopPoolNewBlock(uint start_item)

    54

{

    55

	RoadStop *rs;

    56

    57

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

    58

}

    59

    60

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

    61

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

    62

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

    63

    64

    65

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

    66

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

    67

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

    68

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

    69

    70

void ShowAircraftDepotWindow(TileIndex tile);

    71

extern void UpdateAirplanesOnNewStation(Station *st);

    72

    73

static void MarkStationDirty(const Station* st)

    74

{

    75

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

    76

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

    77

    78

		MarkAllViewportsDirty(

    79

			st->sign.left - 6,

    80

			st->sign.top,

    81

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

    82

			st->sign.top + 48);

    83

	}

    84

}

    85

    86

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

    87

{

    88

	road_stop->xy = tile;

    89

	road_stop->used = true;

    90

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

    91

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

    92

	road_stop->next = NULL;

    93

	road_stop->prev = previous;

    94

	road_stop->station = index;

    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: 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

   117

	return rs;

   118

}

   119

   120

static uint GetNumRoadStops(const Station* st, RoadStopType type)

   121

{

   122

	uint num = 0;

   123

	const RoadStop *rs;

   124

   125

	assert(st != NULL);

   126

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

   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(*rs));

   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)) 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 uint FindCatchmentRadius(const Station* st)

   155

{

   156

	uint 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, StationID 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

			StationID t = _m[tile_cur].m2;

   185

			{

   186

				Station *st = GetStation(t);

   187

				// you cannot take control of an oilrig!!

   188

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

   189

					continue;

   190

			}

   191

   192

			if (closest_station == INVALID_STATION) {

   193

				closest_station = t;

   194

			} else if (closest_station != t) {

   195

				_error_message = STR_3006_ADJOINS_MORE_THAN_ONE_EXISTING;

   196

				return CHECK_STATIONS_ERR;

   197

			}

   198

		}

   199

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

   200

	return (closest_station == INVALID_STATION) ? NULL : GetStation(closest_station);

   201

}

   202

   203

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

   204

{

   205

	switch (v->type) {

   206

		case VEH_Train: 		return st->train_tile;

   207

		case VEH_Aircraft:	return st->airport_tile;

   208

		case VEH_Ship:			return st->dock_tile;

   209

		case VEH_Road:

   210

			if (v->cargo_type == CT_PASSENGERS) {

   211

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

   212

			} else {

   213

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

   214

			}

   215

		default:

   216

			assert(false);

   217

			return 0;

   218

	}

   219

}

   220

   221

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

   222

{

   223

	StationID station_index = st->index;

   224

	uint i;

   225

	uint x1 = TileX(tile);

   226

	uint y1 = TileY(tile);

   227

	uint x2 = x1 + w - 1;

   228

	uint y2 = y1 + h - 1;

   229

	uint t;

   230

   231

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

   232

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

   233

			t = TileX(i);

   234

			if (t < x1) x1 = t;

   235

			if (t > x2) x2 = t;

   236

   237

			t = TileY(i);

   238

			if (t < y1) y1 = t;

   239

			if (t > y2) y2 = t;

   240

		}

   241

	}

   242

   243

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

   244

		_error_message = STR_306C_STATION_TOO_SPREAD_OUT;

   245

		return false;

   246

	}

   247

   248

	return true;

   249

}

   250

   251

static Station *AllocateStation(void)

   252

{

   253

	Station *st = NULL;

   254

   255

	FOR_ALL_STATIONS(st) {

   256

		if (st->xy == 0) {

   257

			StationID index = st->index;

   258

   259

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

   260

			st->index = index;

   261

   262

			return st;

   263

		}

   264

	}

   265

   266

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

   267

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

   268

   269

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   270

	return NULL;

   271

}

   272

   273

   274

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

   275

{

   276

	static const TileIndexDiffC _count_square_table[] = {

   277

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

   278

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

   279

		{-6,  1}, {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

	};

   285

	const TileIndexDiffC *p;

   286

	int num = 0;

   287

   288

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

   289

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

   290

   291

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

   292

			num++;

   293

	}

   294

   295

	return num;

   296

}

   297

   298

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

   299

   300

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

   301

{

   302

	static const uint32 _gen_station_name_bits[] = {

   303

		0,                                      /* 0 */

   304

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

   305

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

   306

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

   307

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

   308

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

   309

	};

   310

   311

	Town *t = st->town;

   312

	uint32 free_names = (uint32)-1;

   313

	int found;

   314

	uint z,z2;

   315

	unsigned long tmp;

   316

   317

	{

   318

		Station *s;

   319

   320

		FOR_ALL_STATIONS(s) {

   321

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

   322

				uint str = M(s->string_id);

   323

				if (str <= 0x20) {

   324

					if (str == M(STR_SV_STNAME_FOREST))

   325

						str = M(STR_SV_STNAME_WOODS);

   326

					CLRBIT(free_names, str);

   327

				}

   328

			}

   329

		}

   330

	}

   331

   332

	/* check default names */

   333

	tmp = free_names & _gen_station_name_bits[flag];

   334

	if (tmp != 0) {

   335

		found = FindFirstBit(tmp);

   336

		goto done;

   337

	}

   338

   339

	/* check mine? */

   340

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

   341

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

   342

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

   343

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

   344

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

   345

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

   346

			found = M(STR_SV_STNAME_MINES);

   347

			goto done;

   348

		}

   349

	}

   350

   351

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

   352

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

   353

		found = M(STR_SV_STNAME);

   354

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

   355

   356

		found = M(STR_SV_STNAME_CENTRAL);

   357

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

   358

	}

   359

   360

	/* Check lakeside */

   361

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

   362

			DistanceFromEdge(tile) < 20 &&

   363

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

   364

		found = M(STR_SV_STNAME_LAKESIDE);

   365

		goto done;

   366

	}

   367

   368

	/* Check woods */

   369

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

   370

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

   371

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

   372

			) {

   373

		found = _opt.landscape == LT_DESERT ?

   374

			M(STR_SV_STNAME_FOREST) : M(STR_SV_STNAME_WOODS);

   375

		goto done;

   376

	}

   377

   378

	/* check elevation compared to town */

   379

	z = GetTileZ(tile);

   380

	z2 = GetTileZ(t->xy);

   381

	if (z < z2) {

   382

		found = M(STR_SV_STNAME_VALLEY);

   383

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

   384

	} else if (z > z2) {

   385

		found = M(STR_SV_STNAME_HEIGHTS);

   386

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

   387

	}

   388

   389

	/* check direction compared to town */

   390

	{

   391

		static const int8 _direction_and_table[] = {

   392

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

   393

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

   394

			~( (1<<M(STR_SV_STNAME_SOUTH)) | (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_EAST)) ),

   396

		};

   397

   398

		free_names &= _direction_and_table[

   399

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

   400

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

   401

	}

   402

   403

	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));

   404

	if (tmp == 0) {

   405

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   406

		return false;

   407

	}

   408

	found = FindFirstBit(tmp);

   409

   410

done:

   411

	st->string_id = found + STR_SV_STNAME;

   412

	return true;

   413

}

   414

#undef M

   415

   416

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

   417

{

   418

	Station* best_station = NULL;

   419

	Station* st;

   420

   421

	FOR_ALL_STATIONS(st) {

   422

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

   423

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

   424

   425

			if (cur_dist < threshold) {

   426

				threshold = cur_dist;

   427

				best_station = st;

   428

			}

   429

		}

   430

	}

   431

   432

	return best_station;

   433

}

   434

   435

static void StationInitialize(Station *st, TileIndex tile)

   436

{

   437

	GoodsEntry *ge;

   438

   439

	st->xy = tile;

   440

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

   441

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

   442

	st->had_vehicle_of_type = 0;

   443

	st->time_since_load = 255;

   444

	st->time_since_unload = 255;

   445

	st->delete_ctr = 0;

   446

	st->facilities = 0;

   447

   448

	st->last_vehicle = INVALID_VEHICLE;

   449

   450

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

   451

		ge->waiting_acceptance = 0;

   452

		ge->days_since_pickup = 0;

   453

		ge->enroute_from = INVALID_STATION;

   454

		ge->rating = 175;

   455

		ge->last_speed = 0;

   456

		ge->last_age = 0xFF;

   457

		ge->feeder_profit = 0;

   458

	}

   459

   460

	_global_station_sort_dirty = true; // build a new station

   461

}

   462

   463

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

   464

// st = Station to update for.

   465

static void UpdateStationVirtCoord(Station *st)

   466

{

   467

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

   468

   469

	pt.y -= 32;

   470

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

   471

   472

	SetDParam(0, st->index);

   473

	SetDParam(1, st->facilities);

   474

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

   475

}

   476

   477

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

   478

void UpdateAllStationVirtCoord(void)

   479

{

   480

	Station* st;

   481

   482

	FOR_ALL_STATIONS(st) {

   483

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

   484

	}

   485

}

   486

   487

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

   488

static void UpdateStationVirtCoordDirty(Station *st)

   489

{

   490

	MarkStationDirty(st);

   491

	UpdateStationVirtCoord(st);

   492

	MarkStationDirty(st);

   493

}

   494

   495

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

   496

static uint GetAcceptanceMask(const Station *st)

   497

{

   498

	uint mask = 0;

   499

	uint i;