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 "station_map.h"

    11

#include "table/sprites.h"

    12

#include "table/strings.h"

    13

#include "map.h"

    14

#include "tile.h"

    15

#include "station.h"

    16

#include "gfx.h"

    17

#include "window.h"

    18

#include "viewport.h"

    19

#include "command.h"

    20

#include "town.h"

    21

#include "vehicle.h"

    22

#include "news.h"

    23

#include "saveload.h"

    24

#include "economy.h"

    25

#include "player.h"

    26

#include "airport.h"

    27

#include "sprite.h"

    28

#include "depot.h"

    29

#include "train.h"

    30

#include "water_map.h"

    31

#include "industry_map.h"

    32

#include "newgrf_callbacks.h"

    33

#include "newgrf_station.h"

    34

#include "yapf/yapf.h"

    35

    36

enum {

    37

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

    38

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

    39

	STATION_POOL_MAX_BLOCKS      = 1000,

    40

    41

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

    42

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

    43

	ROADSTOP_POOL_MAX_BLOCKS      = 2000,

    44

};

    45

    46

/**

    47

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

    48

 */

    49

static void StationPoolNewBlock(uint start_item)

    50

{

    51

	Station *st;

    52

    53

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

    54

}

    55

    56

static void StationPoolCleanBlock(uint start_item, uint end_item)

    57

{

    58

	uint i;

    59

    60

	for (i = start_item; i <= end_item; i++) {

    61

		Station *st = GetStation(i);

    62

		free(st->speclist);

    63

		st->speclist = NULL;

    64

	}

    65

}

    66

    67

/**

    68

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

    69

 */

    70

static void RoadStopPoolNewBlock(uint start_item)

    71

{

    72

	RoadStop *rs;

    73

    74

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

    75

}

    76

    77

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

    78

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

    79

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

    80

    81

    82

void ShowAircraftDepotWindow(TileIndex tile);

    83

extern void UpdateAirplanesOnNewStation(Station *st);

    84

    85

static void MarkStationDirty(const Station* st)

    86

{

    87

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

    88

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

    89

    90

		MarkAllViewportsDirty(

    91

			st->sign.left - 6,

    92

			st->sign.top,

    93

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

    94

			st->sign.top + 48);

    95

	}

    96

}

    97

    98

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

    99

{

   100

	road_stop->xy = tile;

   101

	road_stop->used = true;

   102

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

   103

	road_stop->next = NULL;

   104

	road_stop->prev = previous;

   105

	road_stop->station = index;

   106

	road_stop->num_vehicles = 0;

   107

}

   108

   109

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

   110

{

   111

	switch (type) {

   112

		case RS_BUS:   return st->bus_stops;

   113

		case RS_TRUCK: return st->truck_stops;

   114

		default: NOT_REACHED();

   115

	}

   116

   117

	return NULL;

   118

}

   119

   120

RoadStop* GetRoadStopByTile(TileIndex tile, RoadStopType type)

   121

{

   122

	const Station* st = GetStationByTile(tile);

   123

	RoadStop* rs;

   124

   125

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

   126

		assert(rs->next != NULL);

   127

	}

   128

   129

	return rs;

   130

}

   131

   132

uint GetNumRoadStops(const Station* st, RoadStopType type)

   133

{

   134

	uint num = 0;

   135

	const RoadStop *rs;

   136

   137

	assert(st != NULL);

   138

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

   139

   140

	return num;

   141

}

   142

   143

RoadStop *AllocateRoadStop(void)

   144

{

   145

	RoadStop *rs;

   146

   147

	FOR_ALL_ROADSTOPS(rs) {

   148

		if (!rs->used) {

   149

			uint index = rs->index;

   150

   151

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

   152

			rs->index = index;

   153

   154

			return rs;

   155

		}

   156

	}

   157

   158

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

   159

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

   160

   161

	return NULL;

   162

}

   163

   164

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

   165

    radius that is available within the station */

   166

static uint FindCatchmentRadius(const Station* st)

   167

{

   168

	uint ret = 0;

   169

   170

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

   171

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

   172

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

   173

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

   174

   175

	if (st->airport_tile) {

   176

		switch (st->airport_type) {

   177

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

   178

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

   179

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

   180

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

   181

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

   182

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

   183

		}

   184

	}

   185

   186

	return ret;

   187

}

   188

   189

#define CHECK_STATIONS_ERR ((Station*)-1)

   190

   191

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

   192

{

   193

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

   194

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

   195

		if (IsTileType(tile_cur, MP_STATION)) {

   196

			StationID t = GetStationIndex(tile_cur);

   197

			{

   198

				Station *st = GetStation(t);

   199

				// you cannot take control of an oilrig!!

   200

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

   201

					continue;

   202

			}

   203

   204

			if (closest_station == INVALID_STATION) {

   205

				closest_station = t;

   206

			} else if (closest_station != t) {

   207

				_error_message = STR_3006_ADJOINS_MORE_THAN_ONE_EXISTING;

   208

				return CHECK_STATIONS_ERR;

   209

			}

   210

		}

   211

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

   212

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

   213

}

   214

   215

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

   216

{

   217

	switch (v->type) {

   218

		case VEH_Train: 		return st->train_tile;

   219

		case VEH_Aircraft:	return st->airport_tile;

   220

		case VEH_Ship:			return st->dock_tile;

   221

		case VEH_Road:

   222

			if (v->cargo_type == CT_PASSENGERS) {

   223

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

   224

			} else {

   225

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

   226

			}

   227

		default:

   228

			assert(false);

   229

			return 0;

   230

	}

   231

}

   232

   233

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

   234

{

   235

	StationID station_index = st->index;

   236

	uint i;

   237

	uint x1 = TileX(tile);

   238

	uint y1 = TileY(tile);

   239

	uint x2 = x1 + w - 1;

   240

	uint y2 = y1 + h - 1;

   241

	uint t;

   242

   243

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

   244

		if (IsTileType(i, MP_STATION) && GetStationIndex(i) == station_index) {

   245

			t = TileX(i);

   246

			if (t < x1) x1 = t;

   247

			if (t > x2) x2 = t;

   248

   249

			t = TileY(i);

   250

			if (t < y1) y1 = t;

   251

			if (t > y2) y2 = t;

   252

		}

   253

	}

   254

   255

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

   256

		_error_message = STR_306C_STATION_TOO_SPREAD_OUT;

   257

		return false;

   258

	}

   259

   260

	return true;

   261

}

   262

   263

static Station *AllocateStation(void)

   264

{

   265

	Station *st = NULL;

   266

   267

	FOR_ALL_STATIONS(st) {

   268

		if (st->xy == 0) {

   269

			StationID index = st->index;

   270

   271

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

   272

			st->index = index;

   273

   274

			return st;

   275

		}

   276

	}

   277

   278

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

   279

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

   280

   281

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   282

	return NULL;

   283

}

   284

   285

   286

/**

   287

 * Counts the numbers of tiles matching a specific type in the area around

   288

 * @param tile the center tile of the 'count area'

   289

 * @param type the type of tile searched for

   290

 * @param industry when type == MP_INDUSTRY, the type of the industry,

   291

 *                 in all other cases this parameter is ignored

   292

 * @result the noumber of matching tiles around

   293

 */

   294

static int CountMapSquareAround(TileIndex tile, TileType type, IndustryType industry)

   295

{

   296

	TileIndex cur_tile;

   297

	int dx, dy;

   298

	int num = 0;

   299

   300

	for (dx = -3; dx <= 3; dx++) {

   301

		for (dy = -3; dy <= 3; dy++) {

   302

			cur_tile = TILE_MASK(tile + TileDiffXY(dx, dy));

   303

   304

			if (IsTileType(cur_tile, type)) {

   305

				switch (type) {

   306

					case MP_INDUSTRY:

   307

						if (GetIndustryType(cur_tile) == industry)

   308

							num++;

   309

						break;

   310

   311

					case MP_WATER:

   312

						if (!IsWater(cur_tile))

   313

							break;

   314

						/* FALL THROUGH WHEN WATER TILE */

   315

					case MP_TREES:

   316

						num++;

   317

						break;

   318

   319

					default:

   320

						break;

   321

				}

   322

			}

   323

		}

   324

	}

   325

   326

	return num;

   327

}

   328

   329

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

   330

   331

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

   332

{

   333

	static const uint32 _gen_station_name_bits[] = {

   334

		0,                                      /* 0 */

   335

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

   336

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

   337

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

   338

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

   339

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

   340

	};

   341

   342

	Town *t = st->town;

   343

	uint32 free_names = (uint32)-1;

   344

	int found;

   345

	uint z,z2;

   346

	unsigned long tmp;

   347

   348

	{

   349

		Station *s;

   350

   351

		FOR_ALL_STATIONS(s) {

   352

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

   353

				uint str = M(s->string_id);

   354

				if (str <= 0x20) {

   355

					if (str == M(STR_SV_STNAME_FOREST))

   356

						str = M(STR_SV_STNAME_WOODS);

   357

					CLRBIT(free_names, str);

   358

				}

   359

			}

   360

		}

   361

	}

   362

   363

	/* check default names */

   364

	tmp = free_names & _gen_station_name_bits[flag];

   365

	if (tmp != 0) {

   366

		found = FindFirstBit(tmp);

   367

		goto done;

   368

	}

   369

   370

	/* check mine? */

   371

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

   372

		if (CountMapSquareAround(tile, MP_INDUSTRY, IT_COAL_MINE) >= 2 ||

   373

				CountMapSquareAround(tile, MP_INDUSTRY, IT_IRON_MINE) >= 2 ||

   374

				CountMapSquareAround(tile, MP_INDUSTRY, IT_COPPER_MINE) >= 2 ||

   375

				CountMapSquareAround(tile, MP_INDUSTRY, IT_GOLD_MINE) >= 2 ||

   376

				CountMapSquareAround(tile, MP_INDUSTRY, IT_DIAMOND_MINE) >= 2) {

   377

			found = M(STR_SV_STNAME_MINES);

   378

			goto done;

   379

		}

   380

	}

   381

   382

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

   383

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

   384

		found = M(STR_SV_STNAME);

   385

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

   386

   387

		found = M(STR_SV_STNAME_CENTRAL);

   388

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

   389

	}

   390

   391

	/* Check lakeside */

   392

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

   393

			DistanceFromEdge(tile) < 20 &&

   394

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

   395

		found = M(STR_SV_STNAME_LAKESIDE);

   396

		goto done;

   397

	}

   398

   399

	/* Check woods */

   400

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

   401

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

   402

				CountMapSquareAround(tile, MP_INDUSTRY, IT_FOREST) >= 2)

   403

			) {

   404

		found = _opt.landscape == LT_DESERT ?

   405

			M(STR_SV_STNAME_FOREST) : M(STR_SV_STNAME_WOODS);

   406

		goto done;

   407

	}

   408

   409

	/* check elevation compared to town */

   410

	z = GetTileZ(tile);

   411

	z2 = GetTileZ(t->xy);

   412

	if (z < z2) {

   413

		found = M(STR_SV_STNAME_VALLEY);

   414

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

   415

	} else if (z > z2) {

   416

		found = M(STR_SV_STNAME_HEIGHTS);

   417

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

   418

	}

   419

   420

	/* check direction compared to town */

   421

	{

   422

		static const int8 _direction_and_table[] = {

   423

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

   424

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

   425

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

   426

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

   427

		};

   428

   429

		free_names &= _direction_and_table[

   430

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

   431

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

   432

	}

   433

   434

	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));

   435

	if (tmp == 0) {

   436

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   437

		return false;

   438

	}

   439

	found = FindFirstBit(tmp);

   440

   441

done:

   442

	st->string_id = found + STR_SV_STNAME;

   443

	return true;

   444

}

   445

#undef M

   446

   447

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

   448

{

   449

	Station* best_station = NULL;

   450

	Station* st;

   451

   452

	FOR_ALL_STATIONS(st) {

   453

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

   454

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

   455

   456

			if (cur_dist < threshold) {

   457

				threshold = cur_dist;

   458

				best_station = st;

   459

			}

   460

		}

   461

	}

   462

   463

	return best_station;

   464

}

   465

   466

static void StationInitialize(Station *st, TileIndex tile)

   467

{

   468

	GoodsEntry *ge;

   469

   470

	st->xy = tile;

   471

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

   472

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

   473

	st->had_vehicle_of_type = 0;

   474

	st->time_since_load = 255;

   475

	st->time_since_unload = 255;

   476

	st->delete_ctr = 0;

   477

	st->facilities = 0;

   478

   479

	st->last_vehicle_type = VEH_Invalid;

   480

   481

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

   482

		ge->waiting_acceptance = 0;

   483

		ge->days_since_pickup = 0;

   484

		ge->enroute_from = INVALID_STATION;

   485

		ge->rating = 175;

   486

		ge->last_speed = 0;

   487

		ge->last_age = 0xFF;

   488

		ge->feeder_profit = 0;

   489

	}

   490

   491

	st->random_bits = Random();

   492

	st->waiting_triggers = 0;

   493

   494

}

   495

   496

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

   497

// st = Station to update for.