1

#include "stdafx.h"

     2

#include "ttd.h"

     3

#include "vehicle.h"

     4

#include "command.h"

     5

#include "pathfind.h"

     6

#include "station.h"

     7

#include "gfx.h"

     8

#include "news.h"

     9

#include "engine.h"

    10

#include "gui.h"

    11

#include "player.h"

    12

    13

    14

static const uint16 _ship_sprites[] = {0x0E5D, 0x0E55, 0x0E65, 0x0E6D};

    15

static const byte _ship_sometracks[4] = {0x19, 0x16, 0x25, 0x2A};

    16

    17

static byte GetTileShipTrackStatus(uint tile) {

    18

	uint32 r = GetTileTrackStatus(tile, 4);

    19

	return r | r >> 8;

    20

}

    21

    22

void DrawShipEngine(int x, int y, int engine, uint32 image_ormod)

    23

{

    24

	int spritenum = ship_vehicle_info(engine).image_index;

    25

    26

	if (is_custom_sprite(spritenum)) {

    27

		int sprite = GetCustomEngineSprite(engine, 0xffff, CID_PURCHASE, 0, 0, 6);

    28

    29

		if (sprite) {

    30

			DrawSprite(sprite | image_ormod, x, y);

    31

			return;

    32

		}

    33

		spritenum = _engine_original_sprites[engine];

    34

	}

    35

	DrawSprite((6 + _ship_sprites[spritenum]) | image_ormod, x, y);

    36

}

    37

    38

void DrawShipEngineInfo(int engine, int x, int y, int maxw)

    39

{

    40

	ShipVehicleInfo *svi = &ship_vehicle_info(engine);

    41

	SET_DPARAM32(0, svi->base_cost * (_price.ship_base>>3)>>5);

    42

	SET_DPARAM16(1, svi->max_speed * 10 >> 5);

    43

	SET_DPARAM16(2, _cargoc.names_long_p[svi->cargo_type]);

    44

	SET_DPARAM16(3, svi->capacity);

    45

	SET_DPARAM32(4, svi->running_cost * _price.ship_running >> 8);

    46

	DrawStringMultiCenter(x, y, STR_982E_COST_MAX_SPEED_CAPACITY, maxw);

    47

}

    48

    49

int GetShipImage(Vehicle *v, byte direction)

    50

{

    51

	int spritenum = v->spritenum;

    52

    53

	if (is_custom_sprite(spritenum)) {

    54

		int sprite = GetCustomVehicleSprite(v, direction);

    55

    56

		if (sprite) return sprite;

    57

		spritenum = _engine_original_sprites[v->engine_type];

    58

	}

    59

	return _ship_sprites[spritenum] + direction;

    60

}

    61

    62

static int FindClosestShipDepot(Vehicle *v)

    63

{

    64

	uint tile, dist, best_dist = (uint)-1;

    65

	int best_depot = -1;

    66

	int i;

    67

	byte owner = v->owner;

    68

	uint tile2 = v->tile;

    69

    70

	for(i=0; i!=lengthof(_depots); i++) {

    71

		tile = _depots[i].xy;

    72

		if (IS_TILETYPE(tile, MP_WATER) && _map_owner[tile] == owner) {

    73

			dist = GetTileDist(tile, tile2);

    74

			if (dist < best_dist) {

    75

				best_dist = dist;

    76

				best_depot = i;

    77

			}

    78

		}

    79

	}

    80

    81

	return best_depot;

    82

}

    83

    84

static void CheckIfShipNeedsService(Vehicle *v)

    85

{

    86

	int i;

    87

    91

	if (v->date_of_last_service + v->service_interval > _date)

    92

		return;

    93

    94

	if (v->vehstatus & VS_STOPPED)

    95

		return;

    96

    97

	if ((v->next_order & (OT_MASK | OF_FULL_LOAD)) == (OT_GOTO_DEPOT | OF_FULL_LOAD))

    98

		return;

    99

   100

	if (_patches.gotodepot && IS_HUMAN_PLAYER(v->owner) && ScheduleHasDepotOrders(v->schedule_ptr))

   101

		return;

   102

   103

	i = FindClosestShipDepot(v);

   104

   105

	if (i < 0 || GetTileDist(v->tile, (&_depots[i])->xy) > 12) {

   106

		if ((v->next_order & OT_MASK) == OT_GOTO_DEPOT) {

   107

			v->next_order = OT_DUMMY;

   108

			InvalidateWindowWidget(WC_VEHICLE_VIEW, v->index, 4);

   109

		}

   110

		return;

   111

	}

   112

   113

	v->next_order = OT_GOTO_DEPOT | OF_NON_STOP;

   114

	v->next_order_param = (byte)i;

   115

	v->dest_tile = (&_depots[i])->xy;

   116

	InvalidateWindowWidget(WC_VEHICLE_VIEW, v->index, 4);		

   117

}

   118

   119

void OnNewDay_Ship(Vehicle *v)

   120

{

   121

	int32 cost;

   122

   123

	if ((++v->day_counter & 7) == 0)

   124

		DecreaseVehicleValue(v);

   125

   126

	CheckVehicleBreakdown(v);

   127

	AgeVehicle(v);

   128

	CheckIfShipNeedsService(v);

   129

   130

	if (v->vehstatus & VS_STOPPED)

   131

		return;

   132

   133

	cost = ship_vehicle_info(v->engine_type).running_cost * _price.ship_running / 364;

   134

	v->profit_this_year -= cost >> 8;

   135

   136

	SET_EXPENSES_TYPE(EXPENSES_SHIP_RUN);

   137

	SubtractMoneyFromPlayerFract(v->owner, cost);

   138

   139

	InvalidateWindow(WC_VEHICLE_DETAILS, v->index);

   140

	InvalidateWindow(WC_SHIPS_LIST, v->owner);

   141

}

   142

   143

static void HandleBrokenShip(Vehicle *v)

   144

{

   145

	if (v->breakdown_ctr != 1) {

   146

		v->breakdown_ctr = 1;

   147

		v->cur_speed = 0;

   148

   149

		if (v->breakdowns_since_last_service != 255)

   150

			v->breakdowns_since_last_service++;

   151

   152

		InvalidateWindow(WC_VEHICLE_VIEW, v->index);

   153

		InvalidateWindow(WC_VEHICLE_DETAILS, v->index);

   154

   155

		SndPlayVehicleFx((_opt.landscape != LT_CANDY) ? 0xE : 0x3A, v);

   156

   157

		if (!(v->vehstatus & VS_HIDDEN)) {

   158

			Vehicle *u = CreateEffectVehicleRel(v, 4, 4, 5, EV_BREAKDOWN_SMOKE);

   159

			if (u)

   160

				u->u.special.unk0 = v->breakdown_delay * 2;

   161

		}

   162

	}

   163

   164

	if (!(v->tick_counter & 1)) {

   165

		if (!--v->breakdown_delay) {

   166

			v->breakdown_ctr = 0;

   167

			InvalidateWindow(WC_VEHICLE_VIEW, v->index);

   168

		}

   169

	}

   170

}

   171

   172

static void MarkShipDirty(Vehicle *v)

   173

{

   174

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

   175

	MarkAllViewportsDirty(v->left_coord, v->top_coord, v->right_coord + 1, v->bottom_coord + 1);

   176

}

   177

   178

static void PlayShipSound(Vehicle *v)

   179

{

   180

	SndPlayVehicleFx(ship_vehicle_info(v->engine_type).sfx, v);

   181

}

   182

   183

static const TileIndexDiff _dock_offs[] = {

   184

	TILE_XY(2, 0),

   185

	TILE_XY(-2, 0),

   186

	TILE_XY(0, 2),

   187

	TILE_XY(2, 0),

   188

	TILE_XY(0, -2),

   189

	TILE_XY(0,0),

   190

	TILE_XY(0,0),

   191

	TILE_XY(0,0),

   192

};

   193

   194

static void ProcessShipOrder(Vehicle *v)

   195

{

   196

	uint order;

   197

	Station *st;

   198

   199

	if ((v->next_order & OT_MASK) >= OT_GOTO_DEPOT && (v->next_order & OT_MASK) <= OT_LEAVESTATION) {

   200

		if ((v->next_order & (OT_MASK|OF_UNLOAD)) != (OT_GOTO_DEPOT|OF_UNLOAD))

   201

			return;

   202

	}

   203

   204

	if ((v->next_order & (OT_MASK|OF_UNLOAD|OF_FULL_LOAD)) == (OT_GOTO_DEPOT|OF_UNLOAD|OF_FULL_LOAD) &&

   205

		v->date_of_last_service+v->service_interval > _date) {

   206

		v->cur_order_index++;

   207

	}

   208

   209

   210

	if (v->cur_order_index >= v->num_orders)

   211

		v->cur_order_index = 0;

   212

   213

	order = v->schedule_ptr[v->cur_order_index];

   214

   215

	if (order == 0) {

   216

		v->next_order = OT_NOTHING;

   217

		v->dest_tile = 0;

   218

		return;

   219

	}

   220

   221

	if (order == (uint)((v->next_order | (v->next_order_param<<8))))

   222

		return;

   223

   224

	v->next_order = (byte)order;

   225

	v->next_order_param = (byte)(order >> 8);

   226

   227

	if ((order & OT_MASK) == OT_GOTO_STATION) {

   228

		if ( (byte)(order >> 8) == v->last_station_visited)

   229

			v->last_station_visited = 0xFF;

   230

   231

		st = DEREF_STATION(order >> 8);

   232

		if (st->dock_tile != 0) {

   233

			v->dest_tile = TILE_ADD(st->dock_tile, _dock_offs[_map5[st->dock_tile]-0x4B]);

   234

		}

   235

	} else if ((order & OT_MASK) == OT_GOTO_DEPOT) {

   236

		v->dest_tile = _depots[order >> 8].xy;

   237

	} else {

   238

		v->dest_tile = 0;

   239

	}

   240

	InvalidateVehicleOrderWidget(v);

   241

}

   242

   243

static void HandleShipLoading(Vehicle *v)

   244

{

   245

	if (v->next_order == OT_NOTHING)

   246

		return;

   247

   248

	if (v->next_order != OT_DUMMY) {

   249

		if ((v->next_order&OT_MASK) != OT_LOADING)

   250

			return;

   251

   252

		if (--v->load_unload_time_rem)

   253

			return;

   254

   255

		if (v->next_order&OF_FULL_LOAD && CanFillVehicle(v)) {

   256

			SET_EXPENSES_TYPE(EXPENSES_SHIP_INC);

   257

			if (LoadUnloadVehicle(v)) {

   258

				InvalidateWindow(WC_SHIPS_LIST, v->owner);

   259

				MarkShipDirty(v);

   260

			}

   261

			return;

   262

		}

   263

		PlayShipSound(v);

   264

   265

		{

   266

			byte b = v->next_order;

   267

			v->next_order = OT_LEAVESTATION;

   268

			if (!(b & OF_NON_STOP))

   269

				return;

   270

		}

   271

	}

   272

   273

	v->cur_order_index++;

   274

	InvalidateVehicleOrderWidget(v);

   275

}

   276

   277

static void UpdateShipDeltaXY(Vehicle *v, int dir)

   278

{

   279

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

   280

	static const uint32 _delta_xy_table[8] = {

   281

		MKIT( -3, -3,  6,  6),

   282

		MKIT(-16, -3, 32,  6),

   283

		MKIT( -3, -3,  6,  6),

   284

		MKIT( -3,-16,  6, 32),

   285

		MKIT( -3, -3,  6,  6),

   286

		MKIT(-16, -3, 32,  6),

   287

		MKIT( -3, -3,  6,  6),

   288

		MKIT( -3,-16,  6, 32),

   289

	};

   290

#undef MKIT

   291

	uint32 x = _delta_xy_table[dir];

   292

	v->x_offs = (byte)x;

   293

	v->y_offs = (byte)(x>>=8);

   294

	v->sprite_width = (byte)(x>>=8);

   295

	v->sprite_height = (byte)(x>>=8);

   296

}

   297

   298

static void RecalcShipStuff(Vehicle *v)

   299

{

   300

	UpdateShipDeltaXY(v, v->direction);

   301

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

   302

	MarkShipDirty(v);

   303

	InvalidateWindow(WC_VEHICLE_DEPOT, v->tile);

   304

}

   305

   306

static const TileIndexDiff _ship_leave_depot_offs[] = {

   307

	TILE_XY(-1,0),

   308

	TILE_XY(0,-1),

   309

};

   310

   311

static void CheckShipLeaveDepot(Vehicle *v)

   312

{

   313

	uint tile;

   314

	int d;

   315

	uint m;

   316

   317

	if (v->u.ship.state != 0x80)

   318

		return;

   319

   320

	tile = v->tile;

   321

	d = (_map5[tile]&2) ? 1 : 0;

   322

   323

	// Check first side

   324

	if (_ship_sometracks[d] & GetTileShipTrackStatus(TILE_ADD(tile,_ship_leave_depot_offs[d]))) {

   325

		m = (d==0) ? 0x101 : 0x207;

   326

	// Check second side

   327

	} else if (_ship_sometracks[d+2] & GetTileShipTrackStatus(TILE_ADD(tile, -2*_ship_leave_depot_offs[d]))) {

   328

		m = (d==0) ? 0x105 : 0x203;

   329

	} else {

   330

		return;

   331

	}

   332

	v->direction = (byte)m;

   333

	v->u.ship.state = (byte)(m >> 8);

   334

	v->vehstatus &= ~VS_HIDDEN;

   335

   336

	v->cur_speed = 0;

   337

	RecalcShipStuff(v);

   338

   339

	PlayShipSound(v);

   340

}

   341

   342

static bool ShipAccelerate(Vehicle *v)

   343

{

   344

	uint spd;

   345

	byte t;

   346

   347

	spd = min(v->cur_speed + 1, v->max_speed);

   348

   349

	//updates statusbar only if speed have changed to save CPU time

   350

	if (spd != v->cur_speed) {

   351

		v->cur_speed = spd;	

   352

		if (_patches.vehicle_speed)

   353

			InvalidateWindowWidget(WC_VEHICLE_VIEW, v->index, 4);

   354

	}

   355

   356

	// Decrease somewhat when turning

   357

	if (!(v->direction&1)) {

   358

		spd = spd * 3 >> 2;

   359

	}

   360

   361

	if (spd == 0)

   362

		return false;

   363

   364

	if ((byte)++spd == 0)

   365

		return true;

   366

   367

	v->progress = (t = v->progress) - (byte)spd;

   368

   369

	return (t < v->progress);

   370

}

   371

   372

   373

static int32 EstimateShipCost(uint16 engine_type);

   374

   375

static void ShipEnterDepot(Vehicle *v)

   376

{

   377

	byte t;

   378

   379

	v->u.ship.state = 0x80;

   380

	v->vehstatus |= VS_HIDDEN;

   381

	v->cur_speed = 0;

   382

	RecalcShipStuff(v);

   383

   384

	v->date_of_last_service = _date;

   385

	v->breakdowns_since_last_service = 0;

   386

	v->reliability = _engines[v->engine_type].reliability;

   387

	InvalidateWindow(WC_VEHICLE_DETAILS, v->index);

   388

   389

	MaybeRenewVehicle(v, EstimateShipCost(v->engine_type));

   390

   391

	if ((v->next_order&OT_MASK) == OT_GOTO_DEPOT) {

   392

		InvalidateWindow(WC_VEHICLE_VIEW, v->index);

   393

   394

		t = v->next_order;

   395

		v->next_order = OT_DUMMY;

   396

   397

		if (t&OF_UNLOAD) { v->cur_order_index++; }

   398

   399

		else if (t & 0x40) {

   400

			v->vehstatus |= VS_STOPPED;

   401

			if (v->owner == _local_player) {

   402

				SET_DPARAM16(0, v->unitnumber);

   403

				AddNewsItem(

   404

					STR_981C_SHIP_IS_WAITING_IN_DEPOT,

   405

					NEWS_FLAGS(NM_SMALL, NF_VIEWPORT|NF_VEHICLE, NT_ADVICE, 0),

   406

					v->index,

   407

					0);

   408

			}

   409

		}

   410

	}

   411

}

   412

   413

static void ShipArrivesAt(Vehicle *v, Station *st)

   414

{

   415

	/* Check if station was ever visited before */

   416

	if (!(st->had_vehicle_of_type & HVOT_SHIP)) {

   417

		uint32 flags;

   418

		st->had_vehicle_of_type |= HVOT_SHIP;

   419

		SET_DPARAM16(0, st->index);

   420

		flags = (v->owner == _local_player) ? NEWS_FLAGS(NM_THIN, NF_VIEWPORT|NF_VEHICLE, NT_ARRIVAL_PLAYER, 0) : NEWS_FLAGS(NM_THIN, NF_VIEWPORT|NF_VEHICLE, NT_ARRIVAL_OTHER, 0);

   421

		AddNewsItem(

   422

			STR_9833_CITIZENS_CELEBRATE_FIRST,

   423

			flags,

   424

			v->index,

   425

			0);

   426

	}

   427

}

   428

   429

typedef struct {

   430

	uint skiptile;

   431

	uint dest_coords;

   432

	uint best_bird_dist;

   433

	uint best_length;

   434

} PathFindShip;

   435

   436

//extern void dbg_store_path();

   437

   438

static bool ShipTrackFollower(uint tile, PathFindShip *pfs, int track, uint length, byte *state)

   439

{

   440

	// Found dest?

   441

	if (tile == pfs->dest_coords) {

   442

		pfs->best_bird_dist = 0;

   443

   444

//		if (length < pfs->best_length)

   445

//			dbg_store_path();

   446

   447

		pfs->best_length = minu(pfs->best_length, length);

   448

		return true;

   449

	}

   450

   451

	// Skip this tile in the calculation

   452

	if (tile != pfs->skiptile) {

   453

		pfs->best_bird_dist = minu(pfs->best_bird_dist, GetTileDist1Db(pfs->dest_coords, tile));

   454

	}

   455

   456

	return false;

   457

}

   458

   459

static const byte _ship_search_directions[6][4] = {

   460

	{ 0, 9, 2, 9 },

   461

	{ 9, 1, 9, 3 },

   462

	{ 9, 0, 3, 9 },

   463

	{ 1, 9, 9, 2 },

   464

	{ 3, 2, 9, 9 },

   465

	{ 9, 9, 1, 0 },

   466

};

   467

   468

static const byte _pick_shiptrack_table[6] = {1, 3, 2, 2, 0, 0};

   469

   470

static uint FindShipTrack(Vehicle *v, uint tile, int dir, uint bits, uint skiptile, int *track)

   471

{

   472

	PathFindShip pfs;

   473

	int i, best_track;

   474

	uint best_bird_dist = 0;

   475

	uint best_length    = 0;

   476

	uint r;

   477

	byte ship_dir = v->direction & 3;

   478

   479

	pfs.dest_coords = v->dest_tile;

   480

	pfs.skiptile = skiptile;

   481

   482

	best_track = -1;

   483

   484

	do {

   485

		i = FIND_FIRST_BIT(bits);

   486

		bits = KILL_FIRST_BIT(bits);

   487

   488

		pfs.best_bird_dist = (uint)-1;

   489

		pfs.best_length = (uint)-1;

   490

   491

		FollowTrack(tile, 0x3804, _ship_search_directions[i][dir], (TPFEnumProc*)ShipTrackFollower, NULL, &pfs);

   492

   493

		if (best_track >= 0) {

   494

			if (pfs.best_bird_dist != 0) {

   495

				/* neither reached the destination, pick the one with the smallest bird dist */

   496

				if (pfs.best_bird_dist > best_bird_dist) goto bad;

   497

				if (pfs.best_bird_dist < best_bird_dist) goto good;

   498

			} else {

   499

				if (pfs.best_length > best_length) goto bad;

   500

				if (pfs.best_length < best_length) goto good;

   501

			}

   502

   503

			/* if we reach this position, there's two paths of equal value so far. 

   504

			 * pick one randomly. */

   505

			r = (byte)Random();

   506

			if (_pick_shiptrack_table[i] == ship_dir) r += 80;

   507

			if (_pick_shiptrack_table[best_track] == ship_dir) r -= 80;

   508

			if (r <= 127) goto bad;

   509

		}

   510

good:;

   511

		best_track = i;

   512

		best_bird_dist = pfs.best_bird_dist;

   513

		best_length = pfs.best_length;

   514

bad:;

   515

   516

	} while (bits != 0);

   517

   518

	*track = best_track;

   519

	return best_bird_dist;

   520

}

   521

   522

static int ChooseShipTrack(Vehicle *v, uint tile, int dir, uint tracks)

   523

{

   524

	uint b;

   525

	uint tot_dist, dist;

   526

	int track;

   527

	uint tile2;

   528

   529

	assert(dir>=0 && dir<=3);