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

#include "date.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

			case AT_COMMUTER:      ret = max(ret, CA_AIR_COMMUTER); break;

   185

			case AT_HELIDEPOT:     ret = max(ret, CA_AIR_HELIDEPOT); break;

   186

			case AT_INTERCON:      ret = max(ret, CA_AIR_INTERCON); break;

   187

			case AT_HELISTATION:   ret = max(ret, CA_AIR_HELISTATION); break;

   188

		}

   189

	}

   190

   191

	return ret;

   192

}

   193

   194

#define CHECK_STATIONS_ERR ((Station*)-1)

   195

   196

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

   197

{

   198

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

   199

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

   200

		if (IsTileType(tile_cur, MP_STATION)) {

   201

			StationID t = GetStationIndex(tile_cur);

   202

			{

   203

				Station *st = GetStation(t);

   204

				// you cannot take control of an oilrig!!

   205

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

   206

					continue;

   207

			}

   208

   209

			if (closest_station == INVALID_STATION) {

   210

				closest_station = t;

   211

			} else if (closest_station != t) {

   212

				_error_message = STR_3006_ADJOINS_MORE_THAN_ONE_EXISTING;

   213

				return CHECK_STATIONS_ERR;

   214

			}

   215

		}

   216

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

   217

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

   218

}

   219

   220

   221

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

   222

{

   223

	StationID station_index = st->index;

   224

	uint i;

   225

	uint x1 = TileX(tile);

   226

	uint y1 = TileY(tile);

   227

	uint x2 = x1 + w - 1;

   228

	uint y2 = y1 + h - 1;

   229

	uint t;

   230

   231

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

   232

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

   233

			t = TileX(i);

   234

			if (t < x1) x1 = t;

   235

			if (t > x2) x2 = t;

   236

   237

			t = TileY(i);

   238

			if (t < y1) y1 = t;

   239

			if (t > y2) y2 = t;

   240

		}

   241

	}

   242

   243

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

   244

		_error_message = STR_306C_STATION_TOO_SPREAD_OUT;

   245

		return false;

   246

	}

   247

   248

	return true;

   249

}

   250

   251

static Station *AllocateStation(void)

   252

{

   253

	Station *st = NULL;

   254

   255

	FOR_ALL_STATIONS(st) {

   256

		if (st->xy == 0) {

   257

			StationID index = st->index;

   258

   259

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

   260

			st->index = index;

   261

   262

			return st;

   263

		}

   264

	}

   265

   266

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

   267

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

   268

   269

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   270

	return NULL;

   271

}

   272

   273

   274

/**

   275

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

   276

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

   277

 * @param type the type of tile searched for

   278

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

   279

 *                 in all other cases this parameter is ignored

   280

 * @result the noumber of matching tiles around

   281

 */

   282

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

   283

{

   284

	TileIndex cur_tile;

   285

	int dx, dy;

   286

	int num = 0;

   287

   288

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

   289

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

   290

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

   291

   292

			if (IsTileType(cur_tile, type)) {

   293

				switch (type) {

   294

					case MP_INDUSTRY:

   295

						if (GetIndustryType(cur_tile) == industry)

   296

							num++;

   297

						break;

   298

   299

					case MP_WATER:

   300

						if (!IsWater(cur_tile))

   301

							break;

   302

						/* FALL THROUGH WHEN WATER TILE */

   303

					case MP_TREES:

   304

						num++;

   305

						break;

   306

   307

					default:

   308

						break;

   309

				}

   310

			}

   311

		}

   312

	}

   313

   314

	return num;

   315

}

   316

   317

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

   318

   319

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

   320

{

   321

	static const uint32 _gen_station_name_bits[] = {

   322

		0,                                      /* 0 */

   323

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

   324

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

   325

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

   326

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

   327

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

   328

	};

   329

   330

	Town *t = st->town;

   331

	uint32 free_names = (uint32)-1;

   332

	int found;

   333

	uint z,z2;

   334

	unsigned long tmp;

   335

   336

	{

   337

		Station *s;

   338

   339

		FOR_ALL_STATIONS(s) {

   340

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

   341

				uint str = M(s->string_id);

   342

				if (str <= 0x20) {

   343

					if (str == M(STR_SV_STNAME_FOREST))

   344

						str = M(STR_SV_STNAME_WOODS);

   345

					CLRBIT(free_names, str);

   346

				}

   347

			}

   348

		}

   349

	}

   350

   351

	/* check default names */

   352

	tmp = free_names & _gen_station_name_bits[flag];

   353

	if (tmp != 0) {

   354

		found = FindFirstBit(tmp);

   355

		goto done;

   356

	}

   357

   358

	/* check mine? */

   359

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

   360

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

   361

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

   362

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

   363

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

   364

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

   365

			found = M(STR_SV_STNAME_MINES);

   366

			goto done;

   367

		}

   368

	}

   369

   370

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

   371

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

   372

		found = M(STR_SV_STNAME);

   373

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

   374

   375

		found = M(STR_SV_STNAME_CENTRAL);

   376

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

   377

	}

   378

   379

	/* Check lakeside */

   380

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

   381

			DistanceFromEdge(tile) < 20 &&

   382

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

   383

		found = M(STR_SV_STNAME_LAKESIDE);

   384

		goto done;

   385

	}

   386

   387

	/* Check woods */

   388

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

   389

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

   390

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

   391

			) {

   392

		found = _opt.landscape == LT_DESERT ?

   393

			M(STR_SV_STNAME_FOREST) : M(STR_SV_STNAME_WOODS);

   394

		goto done;

   395

	}

   396

   397

	/* check elevation compared to town */

   398

	z = GetTileZ(tile);

   399

	z2 = GetTileZ(t->xy);

   400

	if (z < z2) {

   401

		found = M(STR_SV_STNAME_VALLEY);

   402

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

   403

	} else if (z > z2) {

   404

		found = M(STR_SV_STNAME_HEIGHTS);

   405

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

   406

	}

   407

   408

	/* check direction compared to town */

   409

	{

   410

		static const int8 _direction_and_table[] = {

   411

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

   412

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

   413

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

   414

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

   415

		};

   416

   417

		free_names &= _direction_and_table[

   418

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

   419

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

   420

	}

   421

   422

	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));

   423

	if (tmp == 0) {

   424

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   425

		return false;

   426

	}

   427

	found = FindFirstBit(tmp);

   428

   429

done:

   430

	st->string_id = found + STR_SV_STNAME;

   431

	return true;

   432

}

   433

#undef M

   434

   435

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

   436

{

   437

	Station* best_station = NULL;

   438

	Station* st;

   439

   440

	FOR_ALL_STATIONS(st) {

   441

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

   442

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

   443

   444

			if (cur_dist < threshold) {

   445

				threshold = cur_dist;

   446

				best_station = st;

   447

			}

   448

		}

   449

	}

   450

   451

	return best_station;

   452

}

   453

   454

static void StationInitialize(Station *st, TileIndex tile)

   455

{

   456

	GoodsEntry *ge;

   457

   458

	st->xy = tile;

   459

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

   460

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

   461

	st->had_vehicle_of_type = 0;

   462

	st->time_since_load = 255;

   463

	st->time_since_unload = 255;

   464

	st->delete_ctr = 0;

   465

	st->facilities = 0;

   466

   467

	st->last_vehicle_type = VEH_Invalid;

   468

   469

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

   470

		ge->waiting_acceptance = 0;

   471

		ge->days_since_pickup = 0;

   472

		ge->enroute_from = INVALID_STATION;

   473

		ge->rating = 175;

   474

		ge->last_speed = 0;

   475

		ge->last_age = 0xFF;

   476

		ge->feeder_profit = 0;

   477

	}

   478

   479

	st->random_bits = Random();

   480

	st->waiting_triggers = 0;

   481

   482

}

   483

   484

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

   485

// st = Station to update for.

   486

static void UpdateStationVirtCoord(Station *st)

   487

{

   488

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

   489

   490

	pt.y -= 32;

   491

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

   492

   493

	SetDParam(0, st->index);

   494

	SetDParam(1, st->facilities);

   495

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

   496

}

   497