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/* $Id$ */

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#include "stdafx.h"

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#include "openttd.h"

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#include "road_map.h"

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#include "roadveh.h"

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#include "ship.h"

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#include "spritecache.h"

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#include "table/sprites.h"

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#include "table/strings.h"

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#include "functions.h"

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#include "map.h"

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#include "tile.h"

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#include "vehicle.h"

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#include "gfx.h"

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#include "viewport.h"

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#include "news.h"

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#include "command.h"

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#include "saveload.h"

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#include "player.h"

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#include "engine.h"

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#include "sound.h"

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#include "debug.h"

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#include "vehicle_gui.h"

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#include "depot.h"

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#include "station.h"

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#include "rail.h"

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#include "train.h"

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#include "aircraft.h"

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#include "industry_map.h"

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#include "station_map.h"

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#include "water_map.h"

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#include "network/network.h"

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#include "yapf/yapf.h"

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#include "date.h"

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#include "newgrf_engine.h"

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#include "newgrf_sound.h"

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    40

#define INVALID_COORD (-0x8000)

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#define GEN_HASH(x, y) ((GB((y), 6, 6) << 6) + GB((x), 7, 6))

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    43

/*

    44

 * These command macros are used to call vehicle type specific commands with non type specific commands

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 * it should be used like: DoCommandP(x, y, p1, p2, flags, CMD_STARTSTOP_VEH(v->type))

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 * that line will start/stop a vehicle nomatter what type it is

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 * VEH_Train is used as an offset because the vehicle type values doesn't start with 0

    48

 */

    49

    50

#define CMD_BUILD_VEH(x) _veh_build_proc_table[ x - VEH_Train]

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#define CMD_SELL_VEH(x)  _veh_sell_proc_table [ x - VEH_Train]

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#define CMD_REFIT_VEH(x) _veh_refit_proc_table[ x - VEH_Train]

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    54

static const uint32 _veh_build_proc_table[] = {

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	CMD_BUILD_RAIL_VEHICLE,

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	CMD_BUILD_ROAD_VEH,

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	CMD_BUILD_SHIP,

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	CMD_BUILD_AIRCRAFT,

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};

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static const uint32 _veh_sell_proc_table[] = {

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	CMD_SELL_RAIL_WAGON,

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	CMD_SELL_ROAD_VEH,

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	CMD_SELL_SHIP,

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	CMD_SELL_AIRCRAFT,

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};

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    67

static const uint32 _veh_refit_proc_table[] = {

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	CMD_REFIT_RAIL_VEHICLE,

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	CMD_REFIT_ROAD_VEH,

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	CMD_REFIT_SHIP,

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	CMD_REFIT_AIRCRAFT,

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};

    73

    74

const uint32 _send_to_depot_proc_table[] = {

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	CMD_SEND_TRAIN_TO_DEPOT,

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	CMD_SEND_ROADVEH_TO_DEPOT,

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	CMD_SEND_SHIP_TO_DEPOT,

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	CMD_SEND_AIRCRAFT_TO_HANGAR,

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};

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    81

    82

enum {

    83

	BLOCKS_FOR_SPECIAL_VEHICLES   = 2, ///< Blocks needed for special vehicles

    84

};

    85

    86

/**

    87

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

    88

 */

    89

static void VehiclePoolNewBlock(uint start_item)

    90

{

    91

	Vehicle *v;

    92

    93

	/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.

    94

	 * TODO - This is just a temporary stage, this will be removed. */

    95

	for (v = GetVehicle(start_item); v != NULL; v = (v->index + 1U < GetVehiclePoolSize()) ? GetVehicle(v->index + 1) : NULL) v->index = start_item++;

    96

}

    97

    98

/* Initialize the vehicle-pool */

    99

DEFINE_OLD_POOL(Vehicle, Vehicle, VehiclePoolNewBlock, NULL)

   100

   101

void VehicleServiceInDepot(Vehicle *v)

   102

{

   103

	v->date_of_last_service = _date;

   104

	v->breakdowns_since_last_service = 0;

   105

	v->reliability = GetEngine(v->engine_type)->reliability;

   106

	InvalidateWindow(WC_VEHICLE_DETAILS, v->index); // ensure that last service date and reliability are updated

   107

}

   108

   109

bool VehicleNeedsService(const Vehicle *v)

   110

{

   111

	if (v->vehstatus & VS_CRASHED)

   112

		return false; /* Crashed vehicles don't need service anymore */

   113

   114

	if (_patches.no_servicing_if_no_breakdowns && _opt.diff.vehicle_breakdowns == 0) {

   115

		return EngineHasReplacementForPlayer(GetPlayer(v->owner), v->engine_type);  /* Vehicles set for autoreplacing needs to go to a depot even if breakdowns are turned off */

   116

	}

   117

   118

	return _patches.servint_ispercent ?

   119

		(v->reliability < GetEngine(v->engine_type)->reliability * (100 - v->service_interval) / 100) :

   120

		(v->date_of_last_service + v->service_interval < _date);

   121

}

   122

   123

StringID VehicleInTheWayErrMsg(const Vehicle* v)

   124

{

   125

	switch (v->type) {

   126

		case VEH_Train:    return STR_8803_TRAIN_IN_THE_WAY;

   127

		case VEH_Road:     return STR_9000_ROAD_VEHICLE_IN_THE_WAY;

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		case VEH_Aircraft: return STR_A015_AIRCRAFT_IN_THE_WAY;

   129

		default:           return STR_980E_SHIP_IN_THE_WAY;

   130

	}

   131

}

   132

   133

static void *EnsureNoVehicleProc(Vehicle *v, void *data)

   134

{

   135

	if (v->tile != *(const TileIndex*)data || v->type == VEH_Disaster)

   136

		return NULL;

   137

   138

	_error_message = VehicleInTheWayErrMsg(v);

   139

	return v;

   140

}

   141

   142

bool EnsureNoVehicle(TileIndex tile)

   143

{

   144

	return VehicleFromPos(tile, &tile, EnsureNoVehicleProc) == NULL;

   145

}

   146

   147

static void *EnsureNoVehicleProcZ(Vehicle *v, void *data)

   148

{

   150

   151

	if (v->tile != ti->tile || v->type == VEH_Disaster) return NULL;

   152

	if (v->z_pos > ti->z) return NULL;

   153

   154

	_error_message = VehicleInTheWayErrMsg(v);

   155

	return v;

   156

}

   157

   158

   159

bool EnsureNoVehicleOnGround(TileIndex tile)

   160

{

   161

	TileInfo ti;

   162

   163

	ti.tile = tile;

   164

	ti.z = GetTileMaxZ(tile);

   165

	return VehicleFromPos(tile, &ti, EnsureNoVehicleProcZ) == NULL;

   166

}

   167

   168

Vehicle *FindVehicleOnTileZ(TileIndex tile, byte z)

   169

{

   170

	TileInfo ti;

   171

   172

	ti.tile = tile;

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	ti.z = z;

   174

   176

}

   177

   178

Vehicle *FindVehicleBetween(TileIndex from, TileIndex to, byte z)

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{

   180

	int x1 = TileX(from);

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	int y1 = TileY(from);

   182

	int x2 = TileX(to);

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	int y2 = TileY(to);

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	Vehicle *veh;

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   186

	/* Make sure x1 < x2 or y1 < y2 */

   187

	if (x1 > x2 || y1 > y2) {

   188

		intswap(x1,x2);

   189

		intswap(y1,y2);

   190

	}

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	FOR_ALL_VEHICLES(veh) {

   192

		if ((veh->type == VEH_Train || veh->type == VEH_Road) && (z==0xFF || veh->z_pos == z)) {

   193

			if ((veh->x_pos>>4) >= x1 && (veh->x_pos>>4) <= x2 &&

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					(veh->y_pos>>4) >= y1 && (veh->y_pos>>4) <= y2) {

   195

				return veh;

   196

			}

   197

		}

   198

	}

   199

	return NULL;

   200

}

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   202

   203

static void UpdateVehiclePosHash(Vehicle* v, int x, int y);

   204

   205

void VehiclePositionChanged(Vehicle *v)

   206

{

   207

	int img = v->cur_image;

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	Point pt = RemapCoords(v->x_pos + v->x_offs, v->y_pos + v->y_offs, v->z_pos);

   209

	const Sprite* spr = GetSprite(img);

   210

   211

	pt.x += spr->x_offs;

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	pt.y += spr->y_offs;

   213

   214

	UpdateVehiclePosHash(v, pt.x, pt.y);

   215

   216

	v->left_coord = pt.x;

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	v->top_coord = pt.y;

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	v->right_coord = pt.x + spr->width + 2;

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	v->bottom_coord = pt.y + spr->height + 2;

   220

}

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   222

// Called after load to update coordinates

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void AfterLoadVehicles(void)

   224

{

   225

	Vehicle *v;

   226

   227

	FOR_ALL_VEHICLES(v) {

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		v->first = NULL;

   229

		if (v->type == VEH_Train) v->u.rail.first_engine = INVALID_ENGINE;

   230

	}

   231

   232

	FOR_ALL_VEHICLES(v) {

   233

		if (v->type == VEH_Train && (IsFrontEngine(v) || IsFreeWagon(v)))

   234

			TrainConsistChanged(v);

   235

	}

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   237

	FOR_ALL_VEHICLES(v) {

   238

		switch (v->type) {

   239

			case VEH_Train: v->cur_image = GetTrainImage(v, v->direction); break;

   240

			case VEH_Road: v->cur_image = GetRoadVehImage(v, v->direction); break;

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			case VEH_Ship: v->cur_image = GetShipImage(v, v->direction); break;

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			case VEH_Aircraft:

   243

				if (v->subtype == 0 || v->subtype == 2) {

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					v->cur_image = GetAircraftImage(v, v->direction);

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					if (v->next != NULL) v->next->cur_image = v->cur_image;

   246

				}

   247

				break;

   248

			default: break;

   249

		}

   250

   251

		v->left_coord = INVALID_COORD;

   252

		VehiclePositionChanged(v);

   253

	}

   254

}

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   256

static Vehicle *InitializeVehicle(Vehicle *v)

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{

   258

	VehicleID index = v->index;

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	memset(v, 0, sizeof(Vehicle));

   260

	v->index = index;

   261

   262

	assert(v->orders == NULL);

   263

   264

	v->left_coord = INVALID_COORD;

   265

	v->first = NULL;

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	v->next = NULL;

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	v->next_hash = NULL;

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	v->string_id = 0;

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	v->next_shared = NULL;

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	v->prev_shared = NULL;

   271

	v->depot_list  = NULL;

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	v->random_bits = 0;

   273

	return v;

   274

}

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   276

/**

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 * Get a value for a vehicle's random_bits.

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 * @return A random value from 0 to 255.

   279

 */

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byte VehicleRandomBits(void)

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{

   282

	return GB(Random(), 0, 8);

   283

}

   284

   285

Vehicle *ForceAllocateSpecialVehicle(void)

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{

   287

	/* This stays a strange story.. there should always be room for special

   288

	 * vehicles (special effects all over the map), but with 65k of vehicles

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	 * is this realistic to double-check for that? For now we just reserve

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	 * BLOCKS_FOR_SPECIAL_VEHICLES times block_size vehicles that may only

   291

	 * be used for special vehicles.. should work nicely :) */

   292

   293

	Vehicle *v;

   294

   295

	/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.

   296

	 * TODO - This is just a temporary stage, this will be removed. */

   297

	for (v = GetVehicle(0); v != NULL; v = (v->index + 1U < GetVehiclePoolSize()) ? GetVehicle(v->index + 1) : NULL) {

   298

		/* No more room for the special vehicles, return NULL */

   299

		if (v->index >= (1 << Vehicle_POOL_BLOCK_SIZE_BITS) * BLOCKS_FOR_SPECIAL_VEHICLES)

   300

			return NULL;

   301

   302

		if (!IsValidVehicle(v)) return InitializeVehicle(v);

   303

	}

   304

   305

	return NULL;

   306

}

   307

   308

/*

   309

 * finds a free vehicle in the memory or allocates a new one

   310

 * returns a pointer to the first free vehicle or NULL if all vehicles are in use

   311

 * *skip_vehicles is an offset to where in the array we should begin looking

   312

 * this is to avoid looping though the same vehicles more than once after we learned that they are not free

   313

 * this feature is used by AllocateVehicles() since it need to allocate more than one and when

   314

 * another block is added to _Vehicle_pool, since we only do that when we know it's already full

   315

 */

   316

static Vehicle *AllocateSingleVehicle(VehicleID *skip_vehicles)

   317

{

   318

	/* See note by ForceAllocateSpecialVehicle() why we skip the

   319

	 * first blocks */

   320

	Vehicle *v;

   321

	const int offset = (1 << Vehicle_POOL_BLOCK_SIZE_BITS) * BLOCKS_FOR_SPECIAL_VEHICLES;

   322

   323

	/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.

   324

	 * TODO - This is just a temporary stage, this will be removed. */

   325

	if (*skip_vehicles < (_Vehicle_pool.total_items - offset)) { // make sure the offset in the array is not larger than the array itself

   326

		for (v = GetVehicle(offset + *skip_vehicles); v != NULL; v = (v->index + 1U < GetVehiclePoolSize()) ? GetVehicle(v->index + 1) : NULL) {

   327

			(*skip_vehicles)++;

   328

			if (!IsValidVehicle(v)) return InitializeVehicle(v);

   329

		}

   330

	}

   331

   332

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

   333

	if (AddBlockToPool(&_Vehicle_pool))

   334

		return AllocateSingleVehicle(skip_vehicles);

   335

   336

	return NULL;

   337

}

   338

   339

   340

Vehicle *AllocateVehicle(void)

   341

{

   342

	VehicleID counter = 0;

   343

	return AllocateSingleVehicle(&counter);

   344

}

   345

   346

   347

/** Allocates a lot of vehicles and frees them again

   348

 * @param vl pointer to an array of vehicles to get allocated. Can be NULL if the vehicles aren't needed (makes it test only)

   349

 * @param num number of vehicles to allocate room for

   350

 * @return true if there is room to allocate all the vehicles

   351

 */

   352

bool AllocateVehicles(Vehicle **vl, int num)

   353

{

   354

	int i;

   355

	Vehicle *v;

   356

	VehicleID counter = 0;

   357

   358

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

   359

		v = AllocateSingleVehicle(&counter);

   360

		if (v == NULL) {

   361

			return false;

   362

		}

   363

		if (vl != NULL) {

   364

			vl[i] = v;

   365

		}

   366

	}

   367

   368

	return true;

   369

}

   370

   371

   372

static Vehicle *_vehicle_position_hash[0x1000];

   373

   374

void *VehicleFromPos(TileIndex tile, void *data, VehicleFromPosProc *proc)

   375

{

   376

	Point pt = RemapCoords(TileX(tile) * TILE_SIZE, TileY(tile) * TILE_SIZE, 0);

   377

   378

	// The hash area to scan

   379

	const int xl = GB(pt.x - 174, 7, 6);

   380

	const int xu = GB(pt.x + 104, 7, 6);

   381

	const int yl = GB(pt.y - 294, 6, 6) << 6;

   382

	const int yu = GB(pt.y +  56, 6, 6) << 6;

   383

   384

	int x;

   385

	int y;

   386

   387

	for (y = yl;; y = (y + (1 << 6)) & (0x3F << 6)) {

   388

		for (x = xl;; x = (x + 1) & 0x3F) {

   389

			Vehicle *v = _vehicle_position_hash[(x + y) & 0xFFFF];

   390

   391

			while (v != NULL) {

   392

				void* a = proc(v, data);

   393

   394

				if (a != NULL) return a;

   395

				v = v->next_hash;

   396

			}

   397

   398

			if (x == xu) break;

   399

		}

   400

   401

		if (y == yu) break;

   402

	}

   403

	return NULL;

   404

}

   405

   406

   407

static void UpdateVehiclePosHash(Vehicle* v, int x, int y)

   408

{

   409

	Vehicle **old_hash, **new_hash;

   410

	int old_x = v->left_coord;

   411

	int old_y = v->top_coord;

   412

   413

	new_hash = (x == INVALID_COORD) ? NULL : &_vehicle_position_hash[GEN_HASH(x,y)];

   414

	old_hash = (old_x == INVALID_COORD) ? NULL : &_vehicle_position_hash[GEN_HASH(old_x, old_y)];

   415

   416

	if (old_hash == new_hash) return;

   417

   418

	/* remove from hash table? */

   419

	if (old_hash != NULL) {

   420

		Vehicle *last = NULL;

   421

		Vehicle *u = *old_hash;

   422

		while (u != v) {

   423

			last = u;

   424

			u = u->next_hash;

   425

			assert(u != NULL);

   426

		}

   427

   428

		if (last == NULL) {

   429

			*old_hash = v->next_hash;

   430

		} else {

   431

			last->next_hash = v->next_hash;

   432

		}

   433

	}

   434

   435

	/* insert into hash table? */

   436

	if (new_hash != NULL) {

   437

		v->next_hash = *new_hash;

   438

		*new_hash = v;

   439

	}

   440

}

   441

   442

void ResetVehiclePosHash(void)

   443

{

   444

	memset(_vehicle_position_hash, 0, sizeof(_vehicle_position_hash));

   445

}

   446

   447

void InitializeVehicles(void)

   448

{

   449

	uint i;

   450

   451

	/* Clean the vehicle pool, and reserve enough blocks

   452

	 *  for the special vehicles, plus one for all the other

   453

	 *  vehicles (which is increased on-the-fly) */

   454

	CleanPool(&_Vehicle_pool);

   455

	AddBlockToPool(&_Vehicle_pool);

   456

	for (i = 0; i < BLOCKS_FOR_SPECIAL_VEHICLES; i++) {

   457

		AddBlockToPool(&_Vehicle_pool);

   458

	}

   459

   460

	ResetVehiclePosHash();

   461

}

   462

   463

Vehicle *GetLastVehicleInChain(Vehicle *v)

   464

{

   465

	while (v->next != NULL) v = v->next;

   466

	return v;

   467

}

   468

   469

/** Finds the previous vehicle in a chain, by a brute force search.

   470

 * This old function is REALLY slow because it searches through all vehicles to

   471

 * find the previous vehicle, but if v->first has not been set, then this function

   472

 * will need to be used to find the previous one. This function should never be

   473

 * called by anything but GetFirstVehicleInChain

   474

 */

   475

static Vehicle *GetPrevVehicleInChain_bruteforce(const Vehicle *v)

   476

{

   477

	Vehicle *u;

   478

   479

	FOR_ALL_VEHICLES(u) if (u->type == VEH_Train && u->next == v) return u;

   480

   481

	return NULL;

   482

}

   483

   484

/** Find the previous vehicle in a chain, by using the v->first cache.

   485

 * While this function is fast, it cannot be used in the GetFirstVehicleInChain

   486

 * function, otherwise you'll end up in an infinite loop call

   487

 */

   488

Vehicle *GetPrevVehicleInChain(const Vehicle *v)

   489

{

   490

	Vehicle *u;