1

/* $Id$ */

     2

     3

/** @file station_cmd.c

     4

  */

     5

     6

#include "stdafx.h"

     7

#include "openttd.h"

     8

#include "bridge_map.h"

     9

#include "debug.h"

    10

#include "functions.h"

    11

#include "station_map.h"

    12

#include "table/sprites.h"

    13

#include "table/strings.h"

    14

#include "map.h"

    15

#include "tile.h"

    16

#include "station.h"

    17

#include "gfx.h"

    18

#include "window.h"

    19

#include "viewport.h"

    20

#include "command.h"

    21

#include "town.h"

    22

#include "vehicle.h"

    23

#include "news.h"

    24

#include "saveload.h"

    25

#include "economy.h"

    26

#include "player.h"

    27

#include "airport.h"

    28

#include "sprite.h"

    29

#include "depot.h"

    30

#include "train.h"

    31

#include "water_map.h"

    32

#include "industry_map.h"

    33

#include "newgrf_callbacks.h"

    34

#include "newgrf_station.h"

    35

#include "yapf/yapf.h"

    36

    37

enum {

    38

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

    39

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

    40

	STATION_POOL_MAX_BLOCKS      = 1000,

    41

    42

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

    43

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

    44

	ROADSTOP_POOL_MAX_BLOCKS      = 2000,

    45

};

    46

    47

/**

    48

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

    49

 */

    50

static void StationPoolNewBlock(uint start_item)

    51

{

    52

	Station *st;

    53

    54

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

    55

}

    56

    57

static void StationPoolCleanBlock(uint start_item, uint end_item)

    58

{

    59

	uint i;

    60

    61

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

    62

		Station *st = GetStation(i);

    63

		free(st->speclist);

    64

		st->speclist = NULL;

    65

	}

    66

}

    67

    68

/**

    69

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

    70

 */

    71

static void RoadStopPoolNewBlock(uint start_item)

    72

{

    73

	RoadStop *rs;

    74

    75

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

    76

}

    77

    78

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

    79

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

    80

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

    81

    82

    83

void ShowAircraftDepotWindow(TileIndex tile);

    84

extern void UpdateAirplanesOnNewStation(Station *st);

    85

    86

static void MarkStationDirty(const Station* st)

    87

{

    88

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

    89

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

    90

    91

		MarkAllViewportsDirty(

    92

			st->sign.left - 6,

    93

			st->sign.top,

    94

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

    95

			st->sign.top + 48);

    96

	}

    97

}

    98

    99

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

   100

{

   101

	road_stop->xy = tile;

   102

	road_stop->used = true;

   103

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

   104

	road_stop->next = NULL;

   105

	road_stop->prev = previous;

   106

	road_stop->station = index;

   107

	road_stop->num_vehicles = 0;

   108

}

   109

   110

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

   111

{

   112

	switch (type) {

   113

		case RS_BUS:   return st->bus_stops;

   114

		case RS_TRUCK: return st->truck_stops;

   115

		default: NOT_REACHED();

   116

	}

   117

   118

	return NULL;

   119

}

   120

   121

RoadStop* GetRoadStopByTile(TileIndex tile, RoadStopType type)

   122

{

   123

	const Station* st = GetStationByTile(tile);

   124

	RoadStop* rs;

   125

   126

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

   127

		assert(rs->next != NULL);

   128

	}

   129

   130

	return rs;

   131

}

   132

   133

uint GetNumRoadStops(const Station* st, RoadStopType type)

   134

{

   135

	uint num = 0;

   136

	const RoadStop *rs;

   137

   138

	assert(st != NULL);

   139

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

   140

   141

	return num;

   142

}

   143

   144

RoadStop *AllocateRoadStop(void)

   145

{

   146

	RoadStop *rs;

   147

   148

	FOR_ALL_ROADSTOPS(rs) {

   149

		if (!rs->used) {

   150

			uint index = rs->index;

   151

   152

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

   153

			rs->index = index;

   154

   155

			return rs;

   156

		}

   157

	}

   158

   159

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

   160

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

   161

   162

	return NULL;

   163

}

   164

   165

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

   166

    radius that is available within the station */

   167

static uint FindCatchmentRadius(const Station* st)

   168

{

   169

	uint ret = 0;

   170

   171

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

   172

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

   173

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

   174

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

   175

   176

	if (st->airport_tile) {

   177

		switch (st->airport_type) {

   178

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

   179

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

   180

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

   181

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

   182

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

   183

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

   184

		}

   185

	}

   186

   187

	return ret;

   188

}

   189

   190

#define CHECK_STATIONS_ERR ((Station*)-1)

   191

   192

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

   193

{

   194

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

   195

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

   196

		if (IsTileType(tile_cur, MP_STATION)) {

   197

			StationID t = GetStationIndex(tile_cur);

   198

			{

   199

				Station *st = GetStation(t);

   200

				// you cannot take control of an oilrig!!

   201

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

   202

					continue;

   203

			}

   204

   205

			if (closest_station == INVALID_STATION) {

   206

				closest_station = t;

   207

			} else if (closest_station != t) {

   208

				_error_message = STR_3006_ADJOINS_MORE_THAN_ONE_EXISTING;

   209

				return CHECK_STATIONS_ERR;

   210

			}

   211

		}

   212

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

   213

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

   214

}

   215

   216

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

   217

{

   218

	switch (v->type) {

   219

		case VEH_Train: 		return st->train_tile;

   220

		case VEH_Aircraft:	return st->airport_tile;

   221

		case VEH_Ship:			return st->dock_tile;

   222

		case VEH_Road:

   223

			if (v->cargo_type == CT_PASSENGERS) {

   224

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

   225

			} else {

   226

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

   227

			}

   228

		default:

   229

			assert(false);

   230

			return 0;

   231

	}

   232

}

   233

   234

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

   235

{

   236

	StationID station_index = st->index;

   237

	uint i;

   238

	uint x1 = TileX(tile);

   239

	uint y1 = TileY(tile);

   240

	uint x2 = x1 + w - 1;

   241

	uint y2 = y1 + h - 1;

   242

	uint t;

   243

   244

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

   245

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

   246

			t = TileX(i);

   247

			if (t < x1) x1 = t;

   248

			if (t > x2) x2 = t;

   249

   250

			t = TileY(i);

   251

			if (t < y1) y1 = t;

   252

			if (t > y2) y2 = t;

   253

		}

   254

	}

   255

   256

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

   257

		_error_message = STR_306C_STATION_TOO_SPREAD_OUT;

   258

		return false;

   259

	}

   260

   261

	return true;

   262

}

   263

   264

static Station *AllocateStation(void)

   265

{

   266

	Station *st = NULL;

   267

   268

	FOR_ALL_STATIONS(st) {

   269

		if (st->xy == 0) {

   270

			StationID index = st->index;

   271

   272

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

   273

			st->index = index;

   274

   275

			return st;

   276

		}

   277

	}

   278

   279

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

   280

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

   281

   282

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   283

	return NULL;

   284

}

   285

   286

   287

/**

   288

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

   289

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

   290

 * @param type the type of tile searched for

   291

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

   292

 *                 in all other cases this parameter is ignored

   293

 * @result the noumber of matching tiles around

   294

 */

   295

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

   296

{

   297

	TileIndex cur_tile;

   298

	int dx, dy;

   299

	int num = 0;

   300

   301

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

   302

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

   303

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

   304

   305

			if (IsTileType(cur_tile, type)) {

   306

				switch (type) {

   307

					case MP_INDUSTRY:

   308

						if (GetIndustryType(cur_tile) == industry)

   309

							num++;

   310

						break;

   311

   312

					case MP_WATER:

   313

						if (!IsWater(cur_tile))

   314

							break;

   315

						/* FALL THROUGH WHEN WATER TILE */

   316

					case MP_TREES:

   317

						num++;

   318

						break;

   319

   320

					default:

   321

						break;

   322

				}

   323

			}

   324

		}

   325

	}

   326

   327

	return num;

   328

}

   329

   330

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

   331

   332

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

   333

{

   334

	static const uint32 _gen_station_name_bits[] = {

   335

		0,                                      /* 0 */

   336

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

   337

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

   338

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

   339

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

   340

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

   341

	};

   342

   343

	Town *t = st->town;

   344

	uint32 free_names = (uint32)-1;

   345

	int found;

   346

	uint z,z2;

   347

	unsigned long tmp;

   348

   349

	{

   350

		Station *s;

   351

   352

		FOR_ALL_STATIONS(s) {

   353

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

   354

				uint str = M(s->string_id);

   355

				if (str <= 0x20) {

   356

					if (str == M(STR_SV_STNAME_FOREST))

   357

						str = M(STR_SV_STNAME_WOODS);

   358

					CLRBIT(free_names, str);

   359

				}

   360

			}

   361

		}

   362

	}

   363

   364

	/* check default names */

   365

	tmp = free_names & _gen_station_name_bits[flag];

   366

	if (tmp != 0) {

   367

		found = FindFirstBit(tmp);

   368

		goto done;

   369

	}

   370

   371

	/* check mine? */

   372

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

   373

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

   374

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

   375

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

   376

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

   377

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

   378

			found = M(STR_SV_STNAME_MINES);

   379

			goto done;

   380

		}

   381

	}

   382

   383

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

   384

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

   385

		found = M(STR_SV_STNAME);

   386

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

   387

   388

		found = M(STR_SV_STNAME_CENTRAL);

   389

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

   390

	}

   391

   392

	/* Check lakeside */

   393

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

   394

			DistanceFromEdge(tile) < 20 &&

   395

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

   396

		found = M(STR_SV_STNAME_LAKESIDE);

   397

		goto done;

   398

	}

   399

   400

	/* Check woods */

   401

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

   402

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

   403

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

   404

			) {

   405

		found = _opt.landscape == LT_DESERT ?

   406

			M(STR_SV_STNAME_FOREST) : M(STR_SV_STNAME_WOODS);

   407

		goto done;

   408

	}

   409

   410

	/* check elevation compared to town */

   411

	z = GetTileZ(tile);

   412

	z2 = GetTileZ(t->xy);

   413

	if (z < z2) {

   414

		found = M(STR_SV_STNAME_VALLEY);

   415

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

   416

	} else if (z > z2) {

   417

		found = M(STR_SV_STNAME_HEIGHTS);

   418

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

   419

	}

   420

   421

	/* check direction compared to town */

   422

	{

   423

		static const int8 _direction_and_table[] = {

   424

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

   425

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

   426

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

   427

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

   428

		};

   429

   430

		free_names &= _direction_and_table[

   431

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

   432

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

   433

	}

   434

   435

	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));

   436

	if (tmp == 0) {

   437

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   438

		return false;

   439

	}

   440

	found = FindFirstBit(tmp);

   441

   442

done:

   443

	st->string_id = found + STR_SV_STNAME;

   444

	return true;

   445

}

   446

#undef M

   447

   448

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

   449

{

   450

	Station* best_station = NULL;

   451

	Station* st;

   452

   453

	FOR_ALL_STATIONS(st) {

   454

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

   455

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

   456

   457

			if (cur_dist < threshold) {

   458

				threshold = cur_dist;

   459

				best_station = st;

   460

			}

   461

		}

   462

	}

   463

   464

	return best_station;

   465

}

   466

   467

static void StationInitialize(Station *st, TileIndex tile)

   468

{

   469

	GoodsEntry *ge;

   470

   471

	st->xy = tile;

   472

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

   473

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

   474

	st->had_vehicle_of_type = 0;

   475

	st->time_since_load = 255;

   476

	st->time_since_unload = 255;

   477

	st->delete_ctr = 0;

   478

	st->facilities = 0;

   479

   480

	st->last_vehicle_type = VEH_Invalid;

   481

   482

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

   483

		ge->waiting_acceptance = 0;

   484

		ge->days_since_pickup = 0;

   485

		ge->enroute_from = INVALID_STATION;

   486

		ge->rating = 175;

   487

		ge->last_speed = 0;

   488

		ge->last_age = 0xFF;

   489

		ge->feeder_profit = 0;

   490

	}

   491

   492

	st->random_bits = Random();

   493

	st->waiting_triggers = 0;

   494

   495

}

   496

   497

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