1

/* $Id$ */

     2

     3

/** @file aircraft_cmd.cpp

     4

 * This file deals with aircraft and airport movements functionalities */

     5

     6

#include "stdafx.h"

     7

#include "openttd.h"

     8

#include "aircraft.h"

     9

#include "debug.h"

    10

#include "landscape.h"

    11

#include "station_map.h"

    12

#include "timetable.h"

    13

#include "depot.h"

    14

#include "news_func.h"

    15

#include "aircraft.h"

    16

#include "airport.h"

    17

#include "vehicle_gui.h"

    18

#include "newgrf_engine.h"

    19

#include "newgrf_callbacks.h"

    20

#include "newgrf_text.h"

    21

#include "newgrf_sound.h"

    22

#include "spritecache.h"

    23

#include "cargotype.h"

    24

#include "strings_func.h"

    25

#include "command_func.h"

    26

#include "window_func.h"

    27

#include "date_func.h"

    28

#include "vehicle_func.h"

    29

#include "sound_func.h"

    30

#include "functions.h"

    31

#include "variables.h"

    32

#include "autoreplace_func.h"

    33

#include "autoreplace_gui.h"

    34

#include "gfx_func.h"

    35

#include "player_func.h"

    36

#include "settings_type.h"

    37

#include "order_func.h"

    38

    39

#include "table/strings.h"

    40

#include "table/sprites.h"

    41

    42

void Aircraft::UpdateDeltaXY(Direction direction)

    43

{

    44

	uint32 x;

    45

#define MKIT(a, b, c, d) ((a & 0xFF) << 24) | ((b & 0xFF) << 16) | ((c & 0xFF) << 8) | ((d & 0xFF) << 0)

    46

	switch (this->subtype) {

    47

		default: NOT_REACHED();

    48

		case AIR_AIRCRAFT:

    49

		case AIR_HELICOPTER:

    50

			switch (this->u.air.state) {

    51

				case ENDTAKEOFF:

    52

				case LANDING:

    53

				case HELILANDING:

    54

				case FLYING:     x = MKIT(24, 24, -1, -1); break;

    55

				default:         x = MKIT( 2,  2, -1, -1); break;

    56

			}

    57

			this->z_extent = 5;

    58

			break;

    59

		case AIR_SHADOW:     this->z_extent = 1; x = MKIT(2,  2,  0,  0); break;

    60

		case AIR_ROTOR:      this->z_extent = 1; x = MKIT(2,  2, -1, -1); break;

    61

	}

    62

#undef MKIT

    63

    64

	this->x_offs        = GB(x,  0, 8);

    65

	this->y_offs        = GB(x,  8, 8);

    66

	this->x_extent      = GB(x, 16, 8);

    67

	this->y_extent      = GB(x, 24, 8);

    68

}

    69

    70

    71

/** this maps the terminal to its corresponding state and block flag

    72

 *  currently set for 10 terms, 4 helipads */

    73

static const byte _airport_terminal_state[] = {2, 3, 4, 5, 6, 7, 19, 20, 0, 0, 8, 9, 21, 22};

    74

static const byte _airport_terminal_flag[] =  {0, 1, 2, 3, 4, 5, 22, 23, 0, 0, 6, 7, 24, 25};

    75

    76

static bool AirportMove(Vehicle *v, const AirportFTAClass *apc);

    77

static bool AirportSetBlocks(Vehicle *v, const AirportFTA *current_pos, const AirportFTAClass *apc);

    78

static bool AirportHasBlock(Vehicle *v, const AirportFTA *current_pos, const AirportFTAClass *apc);

    79

static bool AirportFindFreeTerminal(Vehicle *v, const AirportFTAClass *apc);

    80

static bool AirportFindFreeHelipad(Vehicle *v, const AirportFTAClass *apc);

    81

static void CrashAirplane(Vehicle *v);

    82

    83

static void AircraftNextAirportPos_and_Order(Vehicle *v);

    84

static byte GetAircraftFlyingAltitude(const Vehicle *v);

    85

    86

static const SpriteID _aircraft_sprite[] = {

    87

	0x0EB5, 0x0EBD, 0x0EC5, 0x0ECD,

    88

	0x0ED5, 0x0EDD, 0x0E9D, 0x0EA5,

    89

	0x0EAD, 0x0EE5, 0x0F05, 0x0F0D,

    90

	0x0F15, 0x0F1D, 0x0F25, 0x0F2D,

    91

	0x0EED, 0x0EF5, 0x0EFD, 0x0F35,

    92

	0x0E9D, 0x0EA5, 0x0EAD, 0x0EB5,

    93

	0x0EBD, 0x0EC5

    94

};

    95

    96

/** Helicopter rotor animation states */

    97

enum HelicopterRotorStates {

    98

	HRS_ROTOR_STOPPED,

    99

	HRS_ROTOR_MOVING_1,

   100

	HRS_ROTOR_MOVING_2,

   101

	HRS_ROTOR_MOVING_3,

   102

};

   103

   104

/** Find the nearest hangar to v

   105

 * INVALID_STATION is returned, if the player does not have any suitable

   106

 * airports (like helipads only)

   107

 * @param v vehicle looking for a hangar

   108

 * @return the StationID if one is found, otherwise, INVALID_STATION

   109

 */

   110

static StationID FindNearestHangar(const Vehicle *v)

   111

{

   112

	const Station *st;

   113

	uint best = 0;

   114

	StationID index = INVALID_STATION;

   115

	TileIndex vtile = TileVirtXY(v->x_pos, v->y_pos);

   116

   117

	FOR_ALL_STATIONS(st) {

   118

		if (st->owner != v->owner || !(st->facilities & FACIL_AIRPORT)) continue;

   119

   120

		const AirportFTAClass *afc = st->Airport();

   121

		if (afc->nof_depots == 0 || (

   122

					/* don't crash the plane if we know it can't land at the airport */

   123

					afc->flags & AirportFTAClass::SHORT_STRIP &&

   124

					AircraftVehInfo(v->engine_type)->subtype & AIR_FAST &&

   125

					!_cheats.no_jetcrash.value

   126

				)) {

   127

			continue;

   128

		}

   129

   130

		/* v->tile can't be used here, when aircraft is flying v->tile is set to 0 */

   131

		uint distance = DistanceSquare(vtile, st->airport_tile);

   132

		if (distance < best || index == INVALID_STATION) {

   133

			best = distance;

   134

			index = st->index;

   135

		}

   136

	}

   137

	return index;

   138

}

   139

   140

#if 0

   141

/** Check if given vehicle has a goto hangar in his orders

   142

 * @param v vehicle to inquiry

   143

 * @return true if vehicle v has an airport in the schedule, that has a hangar */

   144

static bool HaveHangarInOrderList(Vehicle *v)

   145

{

   146

	const Order *order;

   147

   148

	FOR_VEHICLE_ORDERS(v, order) {

   149

		const Station *st = GetStation(order->station);

   150

		if (st->owner == v->owner && st->facilities & FACIL_AIRPORT) {

   151

			/* If an airport doesn't have a hangar, skip it */

   152

			if (st->Airport()->nof_depots != 0)

   153

				return true;

   154

		}

   155

	}

   156

   157

	return false;

   158

}

   159

#endif

   160

   161

int Aircraft::GetImage(Direction direction) const

   162

{

   163

	int spritenum = this->spritenum;

   164

   165

	if (is_custom_sprite(spritenum)) {

   166

		int sprite = GetCustomVehicleSprite(this, direction);

   167

   168

		if (sprite != 0) return sprite;

   169

		spritenum = _orig_aircraft_vehicle_info[this->engine_type - AIRCRAFT_ENGINES_INDEX].image_index;

   170

	}

   171

	return direction + _aircraft_sprite[spritenum];

   172

}

   173

   174

SpriteID GetRotorImage(const Vehicle *v)

   175

{

   176

	assert(v->subtype == AIR_HELICOPTER);

   177

   178

	const Vehicle *w = v->Next()->Next();

   179

	if (is_custom_sprite(v->spritenum)) {

   180

		SpriteID spritenum = GetCustomRotorSprite(v, false);

   181

		if (spritenum != 0) return spritenum;

   182

	}

   183

   184

	/* Return standard rotor sprites if there are no custom sprites for this helicopter */

   185

	return SPR_ROTOR_STOPPED + w->u.air.state;

   186

}

   187

   188

void DrawAircraftEngine(int x, int y, EngineID engine, SpriteID pal)

   189

{

   190

	const AircraftVehicleInfo* avi = AircraftVehInfo(engine);

   191

	int spritenum = avi->image_index;

   192

	SpriteID sprite = (6 + _aircraft_sprite[spritenum]);

   193

   194

	if (is_custom_sprite(spritenum)) {

   195

		sprite = GetCustomVehicleIcon(engine, DIR_W);

   196

		if (sprite == 0) {

   197

			spritenum = _orig_aircraft_vehicle_info[engine - AIRCRAFT_ENGINES_INDEX].image_index;

   198

			sprite = (6 + _aircraft_sprite[spritenum]);

   199

		}

   200

	}

   201

   202

	DrawSprite(sprite, pal, x, y);

   203

   204

	if (!(avi->subtype & AIR_CTOL)) {

   205

		SpriteID rotor_sprite = GetCustomRotorIcon(engine);

   206

		if (rotor_sprite == 0) rotor_sprite = SPR_ROTOR_STOPPED;

   207

		DrawSprite(rotor_sprite, PAL_NONE, x, y - 5);

   208

	}

   209

}

   210

   211

/** Get the size of the sprite of an aircraft sprite heading west (used for lists)

   212

 * @param engine The engine to get the sprite from

   213

 * @param width The width of the sprite

   214

 * @param height The height of the sprite

   215

 */

   216

void GetAircraftSpriteSize(EngineID engine, uint &width, uint &height)

   217

{

   218

	const AircraftVehicleInfo* avi = AircraftVehInfo(engine);

   219

	int spritenum = avi->image_index;

   220

	SpriteID sprite = (6 + _aircraft_sprite[spritenum]);

   221

   222

	if (is_custom_sprite(spritenum)) {

   223

		sprite = GetCustomVehicleIcon(engine, DIR_W);

   224

		if (sprite == 0) {

   225

			spritenum = _orig_aircraft_vehicle_info[engine - AIRCRAFT_ENGINES_INDEX].image_index;

   226

			sprite = (6 + _aircraft_sprite[spritenum]);

   227

		}

   228

	}

   229

   230

	const Sprite *spr = GetSprite(sprite);

   231

   232

	width  = spr->width ;

   233

	height = spr->height;

   234

}

   235

   236

static CommandCost EstimateAircraftCost(EngineID engine, const AircraftVehicleInfo *avi)

   237

{

   238

	return CommandCost(EXPENSES_NEW_VEHICLES, GetEngineProperty(engine, 0x0B, avi->base_cost) * (_price.aircraft_base >> 3) >> 5);

   239

}

   240

   241

   242

/**

   243

 * Calculates cargo capacity based on an aircraft's passenger

   244

 * and mail capacities.

   245

 * @param cid Which cargo type to calculate a capacity for.

   246

 * @param avi Which engine to find a cargo capacity for.

   247

 * @return New cargo capacity value.

   248

 */

   249

uint16 AircraftDefaultCargoCapacity(CargoID cid, const AircraftVehicleInfo *avi)

   250

{

   251

	assert(cid != CT_INVALID);

   252

   253

	/* An aircraft can carry twice as much goods as normal cargo,

   254

	 * and four times as many passengers. */

   255

	switch (cid) {

   256

		case CT_PASSENGERS:

   257

			return avi->passenger_capacity;

   258

		case CT_MAIL:

   259

			return avi->passenger_capacity + avi->mail_capacity;

   260

		case CT_GOODS:

   261

			return (avi->passenger_capacity + avi->mail_capacity) / 2;

   262

		default:

   263

			return (avi->passenger_capacity + avi->mail_capacity) / 4;

   264

	}

   265

}

   266

   267

/** Build an aircraft.

   268

 * @param tile tile of depot where aircraft is built

   269

 * @param flags for command

   270

 * @param p1 aircraft type being built (engine)

   271

 * @param p2 bit 0 when set, the unitnumber will be 0, otherwise it will be a free number

   272

 * return result of operation.  Could be cost, error

   273

 */

   274

CommandCost CmdBuildAircraft(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)

   275

{

   276

	if (!IsEngineBuildable(p1, VEH_AIRCRAFT, _current_player)) return_cmd_error(STR_AIRCRAFT_NOT_AVAILABLE);

   277

   278

	const AircraftVehicleInfo *avi = AircraftVehInfo(p1);

   279

	CommandCost value = EstimateAircraftCost(p1, avi);

   280

   281

	/* to just query the cost, it is not neccessary to have a valid tile (automation/AI) */

   282

	if (flags & DC_QUERY_COST) return value;

   283

   284

	if (!IsHangarTile(tile) || !IsTileOwner(tile, _current_player)) return CMD_ERROR;

   285

   286

	/* Prevent building aircraft types at places which can't handle them */

   287

	if (!CanAircraftUseStation(p1, tile)) return CMD_ERROR;

   288

   289

	/* Allocate 2 or 3 vehicle structs, depending on type

   290

	 * vl[0] = aircraft, vl[1] = shadow, [vl[2] = rotor] */

   291

	Vehicle *vl[3];

   292

	if (!Vehicle::AllocateList(vl, avi->subtype & AIR_CTOL ? 2 : 3)) {

   293

		return_cmd_error(STR_00E1_TOO_MANY_VEHICLES_IN_GAME);

   294

	}

   295

   296

	UnitID unit_num = HasBit(p2, 0) ? 0 : GetFreeUnitNumber(VEH_AIRCRAFT);

   297

	if (unit_num > _patches.max_aircraft)

   298

		return_cmd_error(STR_00E1_TOO_MANY_VEHICLES_IN_GAME);

   299

   300

	if (flags & DC_EXEC) {

   301

		Vehicle *v = vl[0]; // aircraft

   302

		Vehicle *u = vl[1]; // shadow

   303

   304

		v = new (v) Aircraft();

   305

		u = new (u) Aircraft();

   306

		v->unitnumber = unit_num;

   307

		v->direction = DIR_SE;

   308

   309

		v->owner = u->owner = _current_player;

   310

   311

		v->tile = tile;

   312

//		u->tile = 0;

   313

   314

		uint x = TileX(tile) * TILE_SIZE + 5;

   315

		uint y = TileY(tile) * TILE_SIZE + 3;

   316

   317

		v->x_pos = u->x_pos = x;

   318

		v->y_pos = u->y_pos = y;

   319

   320

		u->z_pos = GetSlopeZ(x, y);

   321

		v->z_pos = u->z_pos + 1;

   322

   323

		v->running_ticks = 0;

   324

   325

//		u->delta_x = u->delta_y = 0;

   326

   327

		v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;

   328

		u->vehstatus = VS_HIDDEN | VS_UNCLICKABLE | VS_SHADOW;

   329

   330

		v->spritenum = avi->image_index;

   331

//		v->cargo_count = u->number_of_pieces = 0;

   332

   333

		v->cargo_cap = avi->passenger_capacity;

   334

		u->cargo_cap = avi->mail_capacity;

   335

   336

		v->cargo_type = CT_PASSENGERS;

   337

		u->cargo_type = CT_MAIL;

   338

   339

		v->cargo_subtype = 0;

   340

   341

		v->name = NULL;

   342

//		v->next_order_param = v->next_order = 0;

   343

   344

//		v->load_unload_time_rem = 0;

   345

//		v->progress = 0;

   346

		v->last_station_visited = INVALID_STATION;

   347

//		v->destination_coords = 0;

   348

   349

		v->max_speed = avi->max_speed;

   350

		v->acceleration = avi->acceleration;

   351

		v->engine_type = p1;

   352

   353

		v->subtype = (avi->subtype & AIR_CTOL ? AIR_AIRCRAFT : AIR_HELICOPTER);

   354

		v->UpdateDeltaXY(INVALID_DIR);

   355

		v->value = value.GetCost();

   356

   357

		u->subtype = AIR_SHADOW;

   358

		u->UpdateDeltaXY(INVALID_DIR);

   359

   360

		/* Danger, Will Robinson!

   361

		 * If the aircraft is refittable, but cannot be refitted to

   362

		 * passengers, we select the cargo type from the refit mask.

   363

		 * This is a fairly nasty hack to get around the fact that TTD

   364

		 * has no default cargo type specifier for planes... */

   365

		CargoID cargo = FindFirstRefittableCargo(p1);

   366

		if (cargo != CT_INVALID && cargo != CT_PASSENGERS) {

   367

			uint16 callback = CALLBACK_FAILED;

   368

   369

			v->cargo_type = cargo;

   370

   371

			if (HasBit(EngInfo(p1)->callbackmask, CBM_VEHICLE_REFIT_CAPACITY)) {

   372

				callback = GetVehicleCallback(CBID_VEHICLE_REFIT_CAPACITY, 0, 0, v->engine_type, v);

   373

			}

   374

   375

			if (callback == CALLBACK_FAILED) {

   376

				/* Callback failed, or not executed; use the default cargo capacity */

   377

				v->cargo_cap = AircraftDefaultCargoCapacity(v->cargo_type, avi);

   378

			} else {

   379

				v->cargo_cap = callback;

   380

			}

   381

   382

			/* Set the 'second compartent' capacity to none */

   383

			u->cargo_cap = 0;

   384

		}

   385

   386

		const Engine *e = GetEngine(p1);

   387

		v->reliability = e->reliability;

   388

		v->reliability_spd_dec = e->reliability_spd_dec;

   389

		v->max_age = e->lifelength * 366;

   390

   391

		_new_vehicle_id = v->index;

   392

   393

		/* When we click on hangar we know the tile it is on. By that we know

   394

		 * its position in the array of depots the airport has.....we can search

   395

		 * layout for #th position of depot. Since layout must start with a listing

   396

		 * of all depots, it is simple */

   397

		for (uint i = 0;; i++) {

   398

			const Station *st = GetStationByTile(tile);

   399

			const AirportFTAClass *apc = st->Airport();

   400

   401

			assert(i != apc->nof_depots);

   402

			if (st->airport_tile + ToTileIndexDiff(apc->airport_depots[i]) == tile) {

   403

				assert(apc->layout[i].heading == HANGAR);

   404

				v->u.air.pos = apc->layout[i].position;

   405

				break;

   406

			}

   407

		}

   408

   409

		v->u.air.state = HANGAR;

   410

		v->u.air.previous_pos = v->u.air.pos;

   411

		v->u.air.targetairport = GetStationIndex(tile);

   412

		v->SetNext(u);

   413

   414

		v->service_interval = _patches.servint_aircraft;

   415

   416

		v->date_of_last_service = _date;

   417

		v->build_year = u->build_year = _cur_year;

   418

   419

		v->cur_image = u->cur_image = 0xEA0;

   420

   421

		v->random_bits = VehicleRandomBits();

   422

		u->random_bits = VehicleRandomBits();

   423

   424

		v->vehicle_flags = 0;

   425

		if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);

   426

   427

		UpdateAircraftCache(v);

   428

   429

		VehiclePositionChanged(v);

   430

		VehiclePositionChanged(u);

   431

   432

		/* Aircraft with 3 vehicles (chopper)? */

   433

		if (v->subtype == AIR_HELICOPTER) {

   434

			Vehicle *w = vl[2];

   435

   436

			w = new (w) Aircraft();

   437

			w->direction = DIR_N;

   438

			w->owner = _current_player;

   439

			w->x_pos = v->x_pos;

   440

			w->y_pos = v->y_pos;

   441

			w->z_pos = v->z_pos + 5;

   442

			w->vehstatus = VS_HIDDEN | VS_UNCLICKABLE;

   443

			w->spritenum = 0xFF;

   444

			w->subtype = AIR_ROTOR;

   445

			w->cur_image = SPR_ROTOR_STOPPED;

   446

			w->random_bits = VehicleRandomBits();

   447

			/* Use rotor's air.state to store the rotor animation frame */

   448

			w->u.air.state = HRS_ROTOR_STOPPED;

   449

			w->UpdateDeltaXY(INVALID_DIR);

   450

   451

			u->SetNext(w);

   452

			VehiclePositionChanged(w);

   453

		}

   454

   455

		InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);

   456

		RebuildVehicleLists();

   457

		InvalidateWindow(WC_COMPANY, v->owner);

   458

		if (IsLocalPlayer())

   459

			InvalidateAutoreplaceWindow(v->engine_type, v->group_id); //updates the replace Aircraft window

   460

   461

		GetPlayer(_current_player)->num_engines[p1]++;

   462

	}

   463

   464

	return value;

   465

}

   466

   467

   468

static void DoDeleteAircraft(Vehicle *v)

   469

{

   470

	DeleteWindowById(WC_VEHICLE_VIEW, v->index);

   471

	RebuildVehicleLists();

   472

	InvalidateWindow(WC_COMPANY, v->owner);

   473

	DeleteDepotHighlightOfVehicle(v);

   474

	DeleteVehicleChain(v);

   475

	InvalidateWindowClasses(WC_AIRCRAFT_LIST);

   476

}

   477

   478

/** Sell an aircraft.

   479

 * @param tile unused

   480

 * @param flags for command type

   481

 * @param p1 vehicle ID to be sold

   482

 * @param p2 unused

   483

 * @return result of operation.  Error or sold value

   484

 */

   485

CommandCost CmdSellAircraft(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)

   486

{

   487

	if (!IsValidVehicleID(p1)) return CMD_ERROR;

   488