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

    35

enum {

    36

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

    37

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

    38

	STATION_POOL_MAX_BLOCKS      = 1000,

    39

    40

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

    41

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

    42

	ROADSTOP_POOL_MAX_BLOCKS      = 2000,

    43

};

    44

    45

/**

    46

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

    47

 */

    48

static void StationPoolNewBlock(uint start_item)

    49

{

    50

	Station *st;

    51

    52

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

    53

}

    54

    55

static void StationPoolCleanBlock(uint start_item, uint end_item)

    56

{

    57

	uint i;

    58

    59

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

    60

		Station *st = GetStation(i);

    61

		free(st->speclist);

    62

		st->speclist = NULL;

    63

	}

    64

}

    65

    66

/**

    67

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

    68

 */

    69

static void RoadStopPoolNewBlock(uint start_item)

    70

{

    71

	RoadStop *rs;

    72

    73

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

    74

}

    75

    76

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

    77

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

    78

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

    79

    80

    81

void ShowAircraftDepotWindow(TileIndex tile);

    82

extern void UpdateAirplanesOnNewStation(Station *st);

    83

    84

static void MarkStationDirty(const Station* st)

    85

{

    86

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

    87

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

    88

    89

		MarkAllViewportsDirty(

    90

			st->sign.left - 6,

    91

			st->sign.top,

    92

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

    93

			st->sign.top + 48);

    94

	}

    95

}

    96

    97

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

    98

{

    99

	road_stop->xy = tile;

   100

	road_stop->used = true;

   101

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

   102

	road_stop->next = NULL;

   103

	road_stop->prev = previous;

   104

	road_stop->station = index;

   105

	road_stop->num_vehicles = 0;

   106

}

   107

   108

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

   109

{

   110

	switch (type) {

   111

		case RS_BUS:   return st->bus_stops;

   112

		case RS_TRUCK: return st->truck_stops;

   113

		default: NOT_REACHED();

   114

	}

   115

   116

	return NULL;

   117

}

   118

   119

RoadStop* GetRoadStopByTile(TileIndex tile, RoadStopType type)

   120

{

   121

	const Station* st = GetStationByTile(tile);

   122

	RoadStop* rs;

   123

   124

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

   125

		assert(rs->next != NULL);

   126

	}

   127

   128

	return rs;

   129

}

   130

   131

uint GetNumRoadStops(const Station* st, RoadStopType type)

   132

{

   133

	uint num = 0;

   134

	const RoadStop *rs;

   135

   136

	assert(st != NULL);

   137

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

   138

   139

	return num;

   140

}

   141

   142

RoadStop *AllocateRoadStop(void)

   143

{

   144

	RoadStop *rs;

   145

   146

	FOR_ALL_ROADSTOPS(rs) {

   147

		if (!rs->used) {

   148

			uint index = rs->index;

   149

   150

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

   151

			rs->index = index;

   152

   153

			return rs;

   154

		}

   155

	}

   156

   157

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

   158

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

   159

   160

	return NULL;

   161

}

   162

   163

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

   164

    radius that is available within the station */

   165

static uint FindCatchmentRadius(const Station* st)

   166

{

   167

	uint ret = 0;

   168

   169

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

   170

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

   171

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

   172

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

   173

   174

	if (st->airport_tile) {

   175

		switch (st->airport_type) {

   176

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

   177

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

   178

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

   179

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

   180

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

   181

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

   182

		}

   183

	}

   184

   185

	return ret;

   186

}

   187

   188

#define CHECK_STATIONS_ERR ((Station*)-1)

   189

   190

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

   191

{

   192

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

   193

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

   194

		if (IsTileType(tile_cur, MP_STATION)) {

   195

			StationID t = GetStationIndex(tile_cur);

   196

			{

   197

				Station *st = GetStation(t);

   198

				// you cannot take control of an oilrig!!

   199

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

   200

					continue;

   201

			}

   202

   203

			if (closest_station == INVALID_STATION) {

   204

				closest_station = t;

   205

			} else if (closest_station != t) {

   206

				_error_message = STR_3006_ADJOINS_MORE_THAN_ONE_EXISTING;

   207

				return CHECK_STATIONS_ERR;

   208

			}

   209

		}

   210

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

   211

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

   212

}

   213

   214

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

   215

{

   216

	switch (v->type) {

   217

		case VEH_Train: 		return st->train_tile;

   218

		case VEH_Aircraft:	return st->airport_tile;

   219

		case VEH_Ship:			return st->dock_tile;

   220

		case VEH_Road:

   221

			if (v->cargo_type == CT_PASSENGERS) {

   222

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

   223

			} else {

   224

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

   225

			}

   226

		default:

   227

			assert(false);

   228

			return 0;

   229

	}

   230

}

   231

   232

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

   233

{

   234

	StationID station_index = st->index;

   235

	uint i;

   236

	uint x1 = TileX(tile);

   237

	uint y1 = TileY(tile);

   238

	uint x2 = x1 + w - 1;

   239

	uint y2 = y1 + h - 1;

   240

	uint t;

   241

   242

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

   243

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

   244

			t = TileX(i);

   245

			if (t < x1) x1 = t;

   246

			if (t > x2) x2 = t;

   247

   248

			t = TileY(i);

   249

			if (t < y1) y1 = t;

   250

			if (t > y2) y2 = t;

   251

		}

   252

	}

   253

   254

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

   255

		_error_message = STR_306C_STATION_TOO_SPREAD_OUT;

   256

		return false;

   257

	}

   258

   259

	return true;

   260

}

   261

   262

static Station *AllocateStation(void)

   263

{

   264

	Station *st = NULL;

   265

   266

	FOR_ALL_STATIONS(st) {

   267

		if (st->xy == 0) {

   268

			StationID index = st->index;

   269

   270

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

   271

			st->index = index;

   272

   273

			return st;

   274

		}

   275

	}

   276

   277

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

   278

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

   279

   280

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   281

	return NULL;

   282

}

   283

   284

   285

/**

   286

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

   287

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

   288

 * @param type the type of tile searched for

   289

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

   290

 *                 in all other cases this parameter is ignored

   291

 * @result the noumber of matching tiles around

   292

 */

   293

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

   294

{

   295

	TileIndex cur_tile;

   296

	int dx, dy;

   297

	int num = 0;

   298

   299

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

   300

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

   301

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

   302

   303

			if (IsTileType(cur_tile, type)) {

   304

				switch (type) {

   305

					case MP_INDUSTRY:

   306

						if (GetIndustryType(cur_tile) == industry)

   307

							num++;

   308

						break;

   309

   310

					case MP_WATER:

   311

						if (!IsWater(cur_tile))

   312

							break;

   313

						/* FALL THROUGH WHEN WATER TILE */

   314

					case MP_TREES:

   315

						num++;

   316

						break;

   317

   318

					default:

   319

						break;

   320

				}

   321

			}

   322

		}

   323

	}

   324

   325

	return num;

   326

}

   327

   328

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

   329

   330

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

   331

{

   332

	static const uint32 _gen_station_name_bits[] = {

   333

		0,                                      /* 0 */

   334

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

   335

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

   336

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

   337

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

   338

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

   339

	};

   340

   341

	Town *t = st->town;

   342

	uint32 free_names = (uint32)-1;

   343

	int found;

   344

	uint z,z2;

   345

	unsigned long tmp;

   346

   347

	{

   348

		Station *s;

   349

   350

		FOR_ALL_STATIONS(s) {

   351

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

   352

				uint str = M(s->string_id);

   353

				if (str <= 0x20) {

   354

					if (str == M(STR_SV_STNAME_FOREST))

   355

						str = M(STR_SV_STNAME_WOODS);

   356

					CLRBIT(free_names, str);

   357

				}

   358

			}

   359

		}

   360

	}

   361

   362

	/* check default names */

   363

	tmp = free_names & _gen_station_name_bits[flag];

   364

	if (tmp != 0) {

   365

		found = FindFirstBit(tmp);

   366

		goto done;

   367

	}

   368

   369

	/* check mine? */

   370

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

   371

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

   372

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

   373

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

   374

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

   375

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

   376

			found = M(STR_SV_STNAME_MINES);

   377

			goto done;

   378

		}

   379

	}

   380

   381

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

   382

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

   383

		found = M(STR_SV_STNAME);

   384

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

   385

   386

		found = M(STR_SV_STNAME_CENTRAL);

   387

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

   388

	}

   389

   390

	/* Check lakeside */

   391

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

   392

			DistanceFromEdge(tile) < 20 &&

   393

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

   394

		found = M(STR_SV_STNAME_LAKESIDE);

   395

		goto done;

   396

	}

   397

   398

	/* Check woods */

   399

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

   400

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

   401

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

   402

			) {

   403

		found = _opt.landscape == LT_DESERT ?

   404

			M(STR_SV_STNAME_FOREST) : M(STR_SV_STNAME_WOODS);

   405

		goto done;

   406

	}

   407

   408

	/* check elevation compared to town */

   409

	z = GetTileZ(tile);

   410

	z2 = GetTileZ(t->xy);

   411

	if (z < z2) {

   412

		found = M(STR_SV_STNAME_VALLEY);

   413

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

   414

	} else if (z > z2) {

   415

		found = M(STR_SV_STNAME_HEIGHTS);

   416

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

   417

	}

   418

   419

	/* check direction compared to town */

   420

	{

   421

		static const int8 _direction_and_table[] = {

   422

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

   423

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

   424

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

   426

		};

   427

   428

		free_names &= _direction_and_table[

   429

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

   430

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

   431

	}

   432

   433

	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));

   434

	if (tmp == 0) {

   435

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   436

		return false;

   437

	}

   438

	found = FindFirstBit(tmp);

   439

   440

done:

   441

	st->string_id = found + STR_SV_STNAME;

   442

	return true;

   443

}

   444

#undef M

   445

   446

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

   447

{

   448

	Station* best_station = NULL;

   449

	Station* st;

   450

   451

	FOR_ALL_STATIONS(st) {

   452

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

   453

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

   454

   455

			if (cur_dist < threshold) {

   456

				threshold = cur_dist;

   457

				best_station = st;

   458

			}

   459

		}

   460

	}

   461

   462

	return best_station;

   463

}

   464

   465

static void StationInitialize(Station *st, TileIndex tile)

   466

{

   467

	GoodsEntry *ge;

   468

   469

	st->xy = tile;

   470

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

   471

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

   472

	st->had_vehicle_of_type = 0;

   473

	st->time_since_load = 255;

   474

	st->time_since_unload = 255;

   475

	st->delete_ctr = 0;

   476

	st->facilities = 0;

   477

   478

	st->last_vehicle_type = VEH_Invalid;

   479

   480

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

   481

		ge->waiting_acceptance = 0;

   482

		ge->days_since_pickup = 0;

   483

		ge->enroute_from = INVALID_STATION;

   484

		ge->rating = 175;

   485

		ge->last_speed = 0;

   486

		ge->last_age = 0xFF;

   487

		ge->feeder_profit = 0;

   488

	}

   489

   490

	st->random_bits = Random();

   491

	st->waiting_triggers = 0;

   492

   493

}

   494

   495

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

   496

// st = Station to update for.

   497

static void UpdateStationVirtCoord(Station *st)