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

	int i;

    90

	road_stop->xy = tile;

    91

	road_stop->used = true;

    92

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

    93

	road_stop->next = NULL;

    94

	road_stop->prev = previous;

    95

	road_stop->station = index;

    96

    97

	for (i = 0; i < NUM_SLOTS; i++) road_stop->slot[i] = INVALID_VEHICLE;

    98

}

    99

   100

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

   101

{

   102

	switch (type) {

   103

		case RS_BUS:   return st->bus_stops;

   104

		case RS_TRUCK: return st->truck_stops;

   105

		default: NOT_REACHED();

   106

	}

   107

   108

	return NULL;

   109

}

   110

   111

RoadStop* GetRoadStopByTile(TileIndex tile, RoadStopType type)

   112

{

   113

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

   114

	RoadStop* rs;

   115

   116

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

   117

		assert(rs->next != NULL);

   118

	}

   119

   120

	return rs;

   121

}

   122

   123

uint GetNumRoadStops(const Station* st, RoadStopType type)

   124

{

   125

	uint num = 0;

   126

	const RoadStop *rs;

   127

   128

	assert(st != NULL);

   129

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

   130

   131

	return num;

   132

}

   133

   134

RoadStop *AllocateRoadStop(void)

   135

{

   136

	RoadStop *rs;

   137

   138

	FOR_ALL_ROADSTOPS(rs) {

   139

		if (!rs->used) {

   140

			uint index = rs->index;

   141

   142

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

   143

			rs->index = index;

   144

   145

			return rs;

   146

		}

   147

	}

   148

   149

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

   150

	if (AddBlockToPool(&_roadstop_pool)) return AllocateRoadStop();

   151

   152

	return NULL;

   153

}

   154

   155

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

   156

    radius that is available within the station */

   157

static uint FindCatchmentRadius(const Station* st)

   158

{

   159

	uint ret = 0;

   160

   161

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

   162

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

   163

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

   164

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

   165

   166

	if (st->airport_tile) {

   167

		switch (st->airport_type) {

   168

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

   169

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

   170

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

   171

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

   172

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

   173

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

   174

		}

   175

	}

   176

   177

	return ret;

   178

}

   179

   180

#define CHECK_STATIONS_ERR ((Station*)-1)

   181

   182

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

   183

{

   184

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

   185

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

   186

		if (IsTileType(tile_cur, MP_STATION)) {

   187

			StationID t = _m[tile_cur].m2;

   188

			{

   189

				Station *st = GetStation(t);

   190

				// you cannot take control of an oilrig!!

   191

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

   192

					continue;

   193

			}

   194

   195

			if (closest_station == INVALID_STATION) {

   196

				closest_station = t;

   197

			} else if (closest_station != t) {

   198

				_error_message = STR_3006_ADJOINS_MORE_THAN_ONE_EXISTING;

   199

				return CHECK_STATIONS_ERR;

   200

			}

   201

		}

   202

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

   203

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

   204

}

   205

   206

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

   207

{

   208

	switch (v->type) {

   209

		case VEH_Train: 		return st->train_tile;

   210

		case VEH_Aircraft:	return st->airport_tile;

   211

		case VEH_Ship:			return st->dock_tile;

   212

		case VEH_Road:

   213

			if (v->cargo_type == CT_PASSENGERS) {

   214

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

   215

			} else {

   216

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

   217

			}

   218

		default:

   219

			assert(false);

   220

			return 0;

   221

	}

   222

}

   223

   224

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

   225

{

   226

	StationID station_index = st->index;

   227

	uint i;

   228

	uint x1 = TileX(tile);

   229

	uint y1 = TileY(tile);

   230

	uint x2 = x1 + w - 1;

   231

	uint y2 = y1 + h - 1;

   232

	uint t;

   233

   234

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

   235

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

   236

			t = TileX(i);

   237

			if (t < x1) x1 = t;

   238

			if (t > x2) x2 = t;

   239

   240

			t = TileY(i);

   241

			if (t < y1) y1 = t;

   242

			if (t > y2) y2 = t;

   243

		}

   244

	}

   245

   246

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

   247

		_error_message = STR_306C_STATION_TOO_SPREAD_OUT;

   248

		return false;

   249

	}

   250

   251

	return true;

   252

}

   253

   254

static Station *AllocateStation(void)

   255

{

   256

	Station *st = NULL;

   257

   258

	FOR_ALL_STATIONS(st) {

   259

		if (st->xy == 0) {

   260

			StationID index = st->index;

   261

   262

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

   263

			st->index = index;

   264

   265

			return st;

   266

		}

   267

	}

   268

   269

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

   270

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

   271

   272

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   273

	return NULL;

   274

}

   275

   276

   277

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

   278

{

   279

	static const TileIndexDiffC _count_square_table[] = {

   280

		{-3, -3}, {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

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

   287

	};

   288

	const TileIndexDiffC *p;

   289

	int num = 0;

   290

   291

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

   292

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

   293

   294

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

   295

			num++;

   296

	}

   297

   298

	return num;

   299

}

   300

   301

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

   302

   303

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

   304

{

   305

	static const uint32 _gen_station_name_bits[] = {

   306

		0,                                      /* 0 */

   307

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

   308

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

   309

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

   310

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

   311

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

   312

	};

   313

   314

	Town *t = st->town;

   315

	uint32 free_names = (uint32)-1;

   316

	int found;

   317

	uint z,z2;

   318

	unsigned long tmp;

   319

   320

	{

   321

		Station *s;

   322

   323

		FOR_ALL_STATIONS(s) {

   324

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

   325

				uint str = M(s->string_id);

   326

				if (str <= 0x20) {

   327

					if (str == M(STR_SV_STNAME_FOREST))

   328

						str = M(STR_SV_STNAME_WOODS);

   329

					CLRBIT(free_names, str);

   330

				}

   331

			}

   332

		}

   333

	}

   334

   335

	/* check default names */

   336

	tmp = free_names & _gen_station_name_bits[flag];

   337

	if (tmp != 0) {

   338

		found = FindFirstBit(tmp);

   339

		goto done;

   340

	}

   341

   342

	/* check mine? */

   343

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

   344

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

   345

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

   346

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

   347

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

   348

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

   349

			found = M(STR_SV_STNAME_MINES);

   350

			goto done;

   351

		}

   352

	}

   353

   354

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

   355

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

   356

		found = M(STR_SV_STNAME);

   357

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

   358

   359

		found = M(STR_SV_STNAME_CENTRAL);

   360

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

   361

	}

   362

   363

	/* Check lakeside */

   364

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

   365

			DistanceFromEdge(tile) < 20 &&

   366

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

   367

		found = M(STR_SV_STNAME_LAKESIDE);

   368

		goto done;

   369

	}

   370

   371

	/* Check woods */

   372

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

   373

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

   374

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

   375

			) {

   376

		found = _opt.landscape == LT_DESERT ?

   377

			M(STR_SV_STNAME_FOREST) : M(STR_SV_STNAME_WOODS);

   378

		goto done;

   379

	}

   380

   381

	/* check elevation compared to town */

   382

	z = GetTileZ(tile);

   383

	z2 = GetTileZ(t->xy);

   384

	if (z < z2) {

   385

		found = M(STR_SV_STNAME_VALLEY);

   386

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

   387

	} else if (z > z2) {

   388

		found = M(STR_SV_STNAME_HEIGHTS);

   389

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

   390

	}

   391

   392

	/* check direction compared to town */

   393

	{

   394

		static const int8 _direction_and_table[] = {

   395

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

   397

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

   398

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

   399

		};

   400

   401

		free_names &= _direction_and_table[

   402

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

   403

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

   404

	}

   405

   406

	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));

   407

	if (tmp == 0) {

   408

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   409

		return false;

   410

	}

   411

	found = FindFirstBit(tmp);

   412

   413

done:

   414

	st->string_id = found + STR_SV_STNAME;

   415

	return true;

   416

}

   417

#undef M

   418

   419

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

   420

{

   421

	Station* best_station = NULL;

   422

	Station* st;

   423

   424

	FOR_ALL_STATIONS(st) {

   425

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

   426

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

   427

   428

			if (cur_dist < threshold) {

   429

				threshold = cur_dist;

   430

				best_station = st;

   431

			}

   432

		}

   433

	}

   434

   435

	return best_station;

   436

}

   437

   438

static void StationInitialize(Station *st, TileIndex tile)

   439

{

   440

	GoodsEntry *ge;

   441

   442

	st->xy = tile;

   443

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

   444

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

   445

	st->had_vehicle_of_type = 0;

   446

	st->time_since_load = 255;

   447

	st->time_since_unload = 255;

   448

	st->delete_ctr = 0;

   449

	st->facilities = 0;

   450

   451

	st->last_vehicle = INVALID_VEHICLE;

   452

   453

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

   454

		ge->waiting_acceptance = 0;

   455

		ge->days_since_pickup = 0;

   456

		ge->enroute_from = INVALID_STATION;

   457

		ge->rating = 175;

   458

		ge->last_speed = 0;

   459

		ge->last_age = 0xFF;

   460

		ge->feeder_profit = 0;

   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

   485

	FOR_ALL_STATIONS(st) {

   486

		if (st->xy != 0) 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.