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

#include "water_map.h"

    30

    31

enum {

    32

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

    33

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

    34

	STATION_POOL_MAX_BLOCKS      = 1000,

    35

    36

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

    37

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

    38

	ROADSTOP_POOL_MAX_BLOCKS      = 2000,

    39

};

    40

    41

/**

    42

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

    43

 */

    44

static void StationPoolNewBlock(uint start_item)

    45

{

    46

	Station *st;

    47

    48

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

    49

}

    50

    51

/**

    52

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

    53

 */

    54

static void RoadStopPoolNewBlock(uint start_item)

    55

{

    56

	RoadStop *rs;

    57

    58

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

    59

}

    60

    61

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

    62

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

    63

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

    64

    65

    66

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

    67

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

    68

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

    69

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

    70

    71

void ShowAircraftDepotWindow(TileIndex tile);

    72

extern void UpdateAirplanesOnNewStation(Station *st);

    73

    74

static void MarkStationDirty(const Station* st)

    75

{

    76

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

    77

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

    78

    79

		MarkAllViewportsDirty(

    80

			st->sign.left - 6,

    81

			st->sign.top,

    82

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

    83

			st->sign.top + 48);

    84

	}

    85

}

    86

    87

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

    88

{

    89

	road_stop->xy = tile;

    90

	road_stop->used = true;

    91

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

    92

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

    93

	road_stop->next = NULL;

    94

	road_stop->prev = previous;

    95

	road_stop->station = index;

    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: NOT_REACHED();

   104

	}

   105

   106

	return NULL;

   107

}

   108

   109

RoadStop* GetRoadStopByTile(TileIndex tile, RoadStopType type)

   110

{

   111

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

   112

	RoadStop* rs;

   113

   114

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

   115

		assert(rs->next != NULL);

   116

	}

   117

   118

	return rs;

   119

}

   120

   121

uint GetNumRoadStops(const Station* st, RoadStopType type)

   122

{

   123

	uint num = 0;

   124

	const RoadStop *rs;

   125

   126

	assert(st != NULL);

   127

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

   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(*rs));

   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)) 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 uint FindCatchmentRadius(const Station* st)

   156

{

   157

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

   184

		if (IsTileType(tile_cur, MP_STATION)) {

   185

			StationID 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 == INVALID_STATION) {

   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 == INVALID_STATION) ? 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

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

   213

			} else {

   214

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

   215

			}

   216

		default:

   217

			assert(false);

   218

			return 0;

   219

	}

   220

}

   221

   222

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

   223

{

   224

	StationID station_index = st->index;

   225

	uint i;

   226

	uint x1 = TileX(tile);

   227

	uint y1 = TileY(tile);

   228

	uint x2 = x1 + w - 1;

   229

	uint y2 = y1 + h - 1;

   230

	uint t;

   231

   232

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

   233

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

   234

			t = TileX(i);

   235

			if (t < x1) x1 = t;

   236

			if (t > x2) x2 = t;

   237

   238

			t = TileY(i);

   239

			if (t < y1) y1 = t;

   240

			if (t > y2) y2 = t;

   241

		}

   242

	}

   243

   244

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

   245

		_error_message = STR_306C_STATION_TOO_SPREAD_OUT;

   246

		return false;

   247

	}

   248

   249

	return true;

   250

}

   251

   252

static Station *AllocateStation(void)

   253

{

   254

	Station *st = NULL;

   255

   256

	FOR_ALL_STATIONS(st) {

   257

		if (st->xy == 0) {

   258

			StationID index = st->index;

   259

   260

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

   261

			st->index = index;

   262

   263

			return st;

   264

		}

   265

	}

   266

   267

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

   268

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

   269

   270

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   271

	return NULL;

   272

}

   273

   274

   275

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

   276

{

   277

	static const TileIndexDiffC _count_square_table[] = {

   278

		{-3, -3}, {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

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

   285

	};

   286

	const TileIndexDiffC *p;

   287

	int num = 0;

   288

   289

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

   290

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

   291

   292

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

   293

			num++;

   294

	}

   295

   296

	return num;

   297

}

   298

   299

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

   300

   301

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

   302

{

   303

	static const uint32 _gen_station_name_bits[] = {

   304

		0,                                      /* 0 */

   305

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

   306

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

   307

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

   308

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

   309

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

   310

	};

   311

   312

	Town *t = st->town;

   313

	uint32 free_names = (uint32)-1;

   314

	int found;

   315

	uint z,z2;

   316

	unsigned long tmp;

   317

   318

	{

   319

		Station *s;

   320

   321

		FOR_ALL_STATIONS(s) {

   322

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

   323

				uint str = M(s->string_id);

   324

				if (str <= 0x20) {

   325

					if (str == M(STR_SV_STNAME_FOREST))

   326

						str = M(STR_SV_STNAME_WOODS);

   327

					CLRBIT(free_names, str);

   328

				}

   329

			}

   330

		}

   331

	}

   332

   333

	/* check default names */

   334

	tmp = free_names & _gen_station_name_bits[flag];

   335

	if (tmp != 0) {

   336

		found = FindFirstBit(tmp);

   337

		goto done;

   338

	}

   339

   340

	/* check mine? */

   341

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

   342

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

   343

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

   344

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

   345

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

   346

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

   347

			found = M(STR_SV_STNAME_MINES);

   348

			goto done;

   349

		}

   350

	}

   351

   352

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

   353

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

   354

		found = M(STR_SV_STNAME);

   355

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

   356

   357

		found = M(STR_SV_STNAME_CENTRAL);

   358

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

   359

	}

   360

   361

	/* Check lakeside */

   362

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

   363

			DistanceFromEdge(tile) < 20 &&

   364

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

   365

		found = M(STR_SV_STNAME_LAKESIDE);

   366

		goto done;

   367

	}

   368

   369

	/* Check woods */

   370

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

   371

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

   372

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

   373

			) {

   374

		found = _opt.landscape == LT_DESERT ?

   375

			M(STR_SV_STNAME_FOREST) : M(STR_SV_STNAME_WOODS);

   376

		goto done;

   377

	}

   378

   379

	/* check elevation compared to town */

   380

	z = GetTileZ(tile);

   381

	z2 = GetTileZ(t->xy);

   382

	if (z < z2) {

   383

		found = M(STR_SV_STNAME_VALLEY);

   384

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

   385

	} else if (z > z2) {

   386

		found = M(STR_SV_STNAME_HEIGHTS);

   387

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

   388

	}

   389

   390

	/* check direction compared to town */

   391

	{

   392

		static const int8 _direction_and_table[] = {

   393

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

   394

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

   395

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

   396

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

   397

		};

   398

   399

		free_names &= _direction_and_table[

   400

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

   401

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

   402

	}

   403

   404

	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));

   405

	if (tmp == 0) {

   406

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   407

		return false;

   408

	}

   409

	found = FindFirstBit(tmp);

   410

   411

done:

   412

	st->string_id = found + STR_SV_STNAME;

   413

	return true;

   414

}

   415

#undef M

   416

   417

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

   418

{

   419

	Station* best_station = NULL;

   420

	Station* st;

   421

   422

	FOR_ALL_STATIONS(st) {

   423

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

   424

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

   425

   426

			if (cur_dist < threshold) {

   427

				threshold = cur_dist;

   428

				best_station = st;

   429

			}

   430

		}

   431

	}

   432

   433

	return best_station;

   434

}

   435

   436

static void StationInitialize(Station *st, TileIndex tile)

   437

{

   438

	GoodsEntry *ge;

   439

   440

	st->xy = tile;

   441

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

   442

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

   443

	st->had_vehicle_of_type = 0;

   444

	st->time_since_load = 255;

   445

	st->time_since_unload = 255;

   446

	st->delete_ctr = 0;

   447

	st->facilities = 0;

   448

   449

	st->last_vehicle = INVALID_VEHICLE;

   450

   451

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

   452

		ge->waiting_acceptance = 0;

   453

		ge->days_since_pickup = 0;

   454

		ge->enroute_from = INVALID_STATION;

   455

		ge->rating = 175;

   456

		ge->last_speed = 0;

   457

		ge->last_age = 0xFF;

   458

		ge->feeder_profit = 0;

   459

	}

   460

   461

	_global_station_sort_dirty = true; // build a new station

   462

}

   463

   464

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

   465

// st = Station to update for.

   466

static void UpdateStationVirtCoord(Station *st)

   467

{

   468

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

   469

   470

	pt.y -= 32;

   471

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

   472

   473

	SetDParam(0, st->index);

   474

	SetDParam(1, st->facilities);

   475

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

   476

}

   477

   478

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

   479

void UpdateAllStationVirtCoord(void)

   480

{

   481

	Station* st;

   482

   483

	FOR_ALL_STATIONS(st) {

   484

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

   485

	}

   486

}

   487

   488

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

   489

static void UpdateStationVirtCoordDirty(Station *st)

   490

{

   491

	MarkStationDirty(st);

   492

	UpdateStationVirtCoord(st);

   493

	MarkStationDirty(st);

   494

}

   495

   496

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

   497

static uint GetAcceptanceMask(const Station *st)

   498

{

   499