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

    88

	if (_patches.servint_ships == 0 && IS_HUMAN_PLAYER(v->owner))

    89

		return;

    90

    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

   132

	if (v->vehstatus & VS_STOPPED)

   133

		return;

   134

   137

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

   138

	v->profit_this_year -= cost >> 8;

   139

   140

	SET_EXPENSES_TYPE(EXPENSES_SHIP_RUN);

   141

	SubtractMoneyFromPlayerFract(v->owner, cost);

   142

   143

	InvalidateWindow(WC_VEHICLE_DETAILS, v->index);

   144

	InvalidateWindow(WC_SHIPS_LIST, v->owner);

   145

}

   146

   147

static void HandleBrokenShip(Vehicle *v)

   148

{

   149

	if (v->breakdown_ctr != 1) {

   150

		v->breakdown_ctr = 1;

   151

		v->cur_speed = 0;

   152

   153

		if (v->breakdowns_since_last_service != 255)

   154

			v->breakdowns_since_last_service++;

   155

   156

		InvalidateWindow(WC_VEHICLE_VIEW, v->index);

   157

		InvalidateWindow(WC_VEHICLE_DETAILS, v->index);

   158

   159

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

   160

   161

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

   162

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

   163

			if (u)

   164

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

   165

		}

   166

	}

   167

   168

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

   169

		if (!--v->breakdown_delay) {

   170

			v->breakdown_ctr = 0;

   171

			InvalidateWindow(WC_VEHICLE_VIEW, v->index);

   172

		}

   173

	}

   174

}

   175

   176

static void MarkShipDirty(Vehicle *v)

   177

{

   178

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

   179

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

   180

}

   181

   182

static void PlayShipSound(Vehicle *v)

   183

{

   184

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

   185

}

   186

   187

static const TileIndexDiff _dock_offs[] = {

   188

	TILE_XY(2, 0),

   189

	TILE_XY(-2, 0),

   190

	TILE_XY(0, 2),

   191

	TILE_XY(2, 0),

   192

	TILE_XY(0, -2),

   193

	TILE_XY(0,0),

   194

	TILE_XY(0,0),

   195

	TILE_XY(0,0),

   196

};

   197

   198

static void ProcessShipOrder(Vehicle *v)

   199

{

   200

	uint order;

   201

	Station *st;

   202

   203

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

   204

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

   205

			return;

   206

	}

   207

   208

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

   209

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

   210

		v->cur_order_index++;

   211

	}

   212

   213

   214

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

   215

		v->cur_order_index = 0;

   216

   217

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

   218

   219

	if (order == 0) {

   220

		v->next_order = OT_NOTHING;

   221

		v->dest_tile = 0;

   222

		return;

   223

	}

   224

   225

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

   226

		return;

   227

   228

	v->next_order = (byte)order;

   229

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

   230

   231

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

   232

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

   233

			v->last_station_visited = 0xFF;

   234

   235

		st = DEREF_STATION(order >> 8);

   236

		if (st->dock_tile != 0) {

   237

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

   238

		}

   239

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

   240

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

   241

	} else {

   242

		v->dest_tile = 0;

   243

	}

   244

	InvalidateVehicleOrderWidget(v);

   245

}

   246

   247

static void HandleShipLoading(Vehicle *v)

   248

{

   249

	if (v->next_order == OT_NOTHING)

   250

		return;

   251

   252

	if (v->next_order != OT_DUMMY) {

   253

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

   254

			return;

   255

   256

		if (--v->load_unload_time_rem)

   257

			return;

   258

   259

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

   260

			SET_EXPENSES_TYPE(EXPENSES_SHIP_INC);

   261

			if (LoadUnloadVehicle(v)) {

   262

				InvalidateWindow(WC_SHIPS_LIST, v->owner);

   263

				MarkShipDirty(v);

   264

			}

   265

			return;

   266

		}

   267

		PlayShipSound(v);

   268

   269

		{

   270

			byte b = v->next_order;

   271

			v->next_order = OT_LEAVESTATION;

   272

			if (!(b & OF_NON_STOP))

   273

				return;

   274

		}

   275

	}

   276

   277

	v->cur_order_index++;

   278

	InvalidateVehicleOrderWidget(v);

   279

}

   280

   281

static void UpdateShipDeltaXY(Vehicle *v, int dir)

   282

{

   283

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

   284

	static const uint32 _delta_xy_table[8] = {

   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

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

   290

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

   291

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

   292

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

   293

	};

   294

#undef MKIT

   295

	uint32 x = _delta_xy_table[dir];

   296

	v->x_offs = (byte)x;

   297

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

   298

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

   299

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

   300

}

   301

   302

static void RecalcShipStuff(Vehicle *v)

   303

{

   304

	UpdateShipDeltaXY(v, v->direction);

   305

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

   306

	MarkShipDirty(v);

   307

	InvalidateWindow(WC_VEHICLE_DEPOT, v->tile);

   308

}

   309

   310

static const TileIndexDiff _ship_leave_depot_offs[] = {

   311

	TILE_XY(-1,0),

   312

	TILE_XY(0,-1),

   313

};

   314

   315

static void CheckShipLeaveDepot(Vehicle *v)

   316

{

   317

	uint tile;

   318

	int d;

   319

	uint m;

   320

   321

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

   322

		return;

   323

   324

	tile = v->tile;

   325

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

   326

   327

	// Check first side

   328

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

   329

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

   330

	// Check second side

   331

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

   332

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

   333

	} else {

   334

		return;

   335

	}

   336

	v->direction = (byte)m;

   337

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

   338

	v->vehstatus &= ~VS_HIDDEN;

   339

   340

	v->cur_speed = 0;

   341

	RecalcShipStuff(v);

   342

   343

	PlayShipSound(v);

   344

}

   345

   346

static bool ShipAccelerate(Vehicle *v)

   347

{

   348

	uint spd;

   349

	byte t;

   350

   351

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

   352

   353

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

   354

	if (spd != v->cur_speed) {

   355

		v->cur_speed = spd;	

   356

		if (_patches.vehicle_speed)

   357

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

   358

	}

   359

   360

	// Decrease somewhat when turning

   361

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

   362

		spd = spd * 3 >> 2;

   363

	}

   364

   365

	if (spd == 0)

   366

		return false;

   367

   368

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

   369

		return true;

   370

   371

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

   372

   373

	return (t < v->progress);

   374

}

   375

   376

   377

static int32 EstimateShipCost(uint16 engine_type);

   378

   379

static void ShipEnterDepot(Vehicle *v)

   380

{

   381

	byte t;

   382

   383

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

   384

	v->vehstatus |= VS_HIDDEN;

   385

	v->cur_speed = 0;

   386

	RecalcShipStuff(v);

   387

   388

	v->date_of_last_service = _date;

   389

	v->breakdowns_since_last_service = 0;

   390

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

   391

	InvalidateWindow(WC_VEHICLE_DETAILS, v->index);

   392

   393

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

   394

   395

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

   396

		InvalidateWindow(WC_VEHICLE_VIEW, v->index);

   397

   398

		t = v->next_order;

   399

		v->next_order = OT_DUMMY;

   400

   401

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

   402

   403

		else if (t & 0x40) {

   404

			v->vehstatus |= VS_STOPPED;

   405

			if (v->owner == _local_player) {

   406

				SET_DPARAM16(0, v->unitnumber);

   407

				AddNewsItem(

   408

					STR_981C_SHIP_IS_WAITING_IN_DEPOT,

   409

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

   410

					v->index,

   411

					0);

   412

			}

   413

		}

   414

	}

   415

}

   416

   417

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

   418

{

   419

	/* Check if station was ever visited before */

   420

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

   421

		uint32 flags;

   422

		st->had_vehicle_of_type |= HVOT_SHIP;

   423

		SET_DPARAM16(0, st->index);

   424

		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);

   425

		AddNewsItem(

   426

			STR_9833_CITIZENS_CELEBRATE_FIRST,

   427

			flags,

   428

			v->index,

   429

			0);

   430

	}

   431

}

   432

   433

typedef struct {

   434

	uint skiptile;

   435

	uint dest_coords;

   436

	uint best_bird_dist;

   437

	uint best_length;

   438

} PathFindShip;

   439

   440

//extern void dbg_store_path();

   441

   442

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

   443

{

   444

	// Found dest?

   445

	if (tile == pfs->dest_coords) {

   446

		pfs->best_bird_dist = 0;

   447

   448

//		if (length < pfs->best_length)

   449

//			dbg_store_path();

   450

   451

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

   452

		return true;

   453

	}

   454

   455

	// Skip this tile in the calculation

   456

	if (tile != pfs->skiptile) {

   457

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

   458

	}

   459

   460

	return false;

   461

}

   462

   463

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

   464

	{ 0, 9, 2, 9 },

   465

	{ 9, 1, 9, 3 },

   466

	{ 9, 0, 3, 9 },

   467

	{ 1, 9, 9, 2 },

   468

	{ 3, 2, 9, 9 },

   469

	{ 9, 9, 1, 0 },

   470

};

   471

   472

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

   473

   474

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

   475

{

   476

	PathFindShip pfs;

   477

	int i, best_track;

   478

	uint best_bird_dist = 0;

   479

	uint best_length    = 0;

   480

	uint r;

   481

	byte ship_dir = v->direction & 3;

   482

   483

	pfs.dest_coords = v->dest_tile;

   484

	pfs.skiptile = skiptile;

   485

   486

	best_track = -1;

   487

   488

	do {

   489

		i = FIND_FIRST_BIT(bits);

   490

		bits = KILL_FIRST_BIT(bits);

   491

   492

		pfs.best_bird_dist = (uint)-1;

   493

		pfs.best_length = (uint)-1;

   494

   495

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

   496

   497

		if (best_track >= 0) {

   498

			if (pfs.best_bird_dist != 0) {

   499

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

   500

				if (pfs.best_bird_dist > best_bird_dist) goto bad;

   501

				if (pfs.best_bird_dist < best_bird_dist) goto good;

   502

			} else {

   503

				if (pfs.best_length > best_length) goto bad;

   504

				if (pfs.best_length < best_length) goto good;

   505

			}

   506

   507

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

   508

			 * pick one randomly. */

   509

			r = (byte)Random();

   510

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

   511

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

   512

			if (r <= 127) goto bad;

   513

		}

   514

good:;

   515

		best_track = i;

   516

		best_bird_dist = pfs.best_bird_dist;

   517

		best_length = pfs.best_length;

   518

bad:;

   519

   520

	} while (bits != 0);

   521

   522

	*track = best_track;

   523

	return best_bird_dist;

   524

}

   525

   526

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

   527

{

   528

	uint b;

   529