1

#include "stdafx.h"

     2

#include "ttd.h"

     3

#include "table/strings.h"

     4

#include "vehicle.h"

     5

#include "command.h"

     6

#include "pathfind.h"

     7

#include "station.h"

     8

#include "gfx.h"

     9

#include "news.h"

    10

#include "engine.h"

    11

#include "gui.h"

    12

#include "player.h"

    13

#include "sound.h"

    14

    15

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

    16

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

    17

    18

static byte GetTileShipTrackStatus(uint tile) {

    19

	uint32 r = GetTileTrackStatus(tile, TRANSPORT_WATER);

    20

	return r | r >> 8;

    21

}

    22

    23

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

    24

{

    25

	int spritenum = ship_vehicle_info(engine).image_index;

    26

    27

	if (is_custom_sprite(spritenum)) {

    28

		int sprite = GetCustomVehicleIcon(engine, 6);

    29

    30

		if (sprite) {

    31

			DrawSprite(sprite | image_ormod, x, y);

    32

			return;

    33

		}

    34

		spritenum = _engine_original_sprites[engine];

    35

	}

    36

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

    37

}

    38

    39

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

    40

{

    41

	ShipVehicleInfo *svi = &ship_vehicle_info(engine);

    47

	DrawStringMultiCenter(x, y, STR_982E_COST_MAX_SPEED_CAPACITY, maxw);

    48

}

    49

    50

int GetShipImage(Vehicle *v, byte direction)

    51

{

    52

	int spritenum = v->spritenum;

    53

    54

	if (is_custom_sprite(spritenum)) {

    55

		int sprite = GetCustomVehicleSprite(v, direction);

    56

    57

		if (sprite) return sprite;

    58

		spritenum = _engine_original_sprites[v->engine_type];

    59

	}

    60

	return _ship_sprites[spritenum] + direction;

    61

}

    62

    63

static int FindClosestShipDepot(Vehicle *v)

    64

{

    65

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

    66

	int best_depot = -1;

    67

	int i;

    68

	byte owner = v->owner;

    69

	uint tile2 = v->tile;

    70

    71

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

    72

		tile = _depots[i].xy;

    73

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

    74

			dist = GetTileDist(tile, tile2);

    75

			if (dist < best_dist) {

    76

				best_dist = dist;

    77

				best_depot = i;

    78

			}

    79

		}

    80

	}

    81

    82

	return best_depot;

    83

}

    84

    85

static void CheckIfShipNeedsService(Vehicle *v)

    86

{

    87

	int i;

    88

    89

	if (_patches.servint_ships == 0)

    90

		return;

    91

    92

	if (SERVICE_INTERVAL)

    93

		return;

    94

    95

	if (v->vehstatus & VS_STOPPED)

    96

		return;

    97

    98

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

    99

		return;

   100

   101

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

   102

		return;

   103

   104

	i = FindClosestShipDepot(v);

   105

   106

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

   107

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

   108

			v->next_order = OT_DUMMY;

   109

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

   110

		}

   111

		return;

   112

	}

   113

   114

	v->next_order = OT_GOTO_DEPOT | OF_NON_STOP;

   115

	v->next_order_param = (byte)i;

   116

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

   117

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

   118

}

   119

   120

void OnNewDay_Ship(Vehicle *v)

   121

{

   122

	int32 cost;

   123

   124

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

   125

		DecreaseVehicleValue(v);

   126

   127

	CheckVehicleBreakdown(v);

   128

	AgeVehicle(v);

   129

	CheckIfShipNeedsService(v);

   130

   131

	CheckOrders(v);

   132

   133

	if (v->vehstatus & VS_STOPPED)

   134

		return;

   135

   136

   137

   138

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

   139

	v->profit_this_year -= cost >> 8;

   140

   141

	SET_EXPENSES_TYPE(EXPENSES_SHIP_RUN);

   142

	SubtractMoneyFromPlayerFract(v->owner, cost);

   143

   144

	InvalidateWindow(WC_VEHICLE_DETAILS, v->index);

   145

	InvalidateWindow(WC_SHIPS_LIST, v->owner);

   146

}

   147

   148

static void HandleBrokenShip(Vehicle *v)

   149

{

   150

	if (v->breakdown_ctr != 1) {

   151

		v->breakdown_ctr = 1;

   152

		v->cur_speed = 0;

   153

   154

		if (v->breakdowns_since_last_service != 255)

   155

			v->breakdowns_since_last_service++;

   156

   157

		InvalidateWindow(WC_VEHICLE_VIEW, v->index);

   158

		InvalidateWindow(WC_VEHICLE_DETAILS, v->index);

   159

   160

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

   161

   162

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

   163

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

   164

			if (u)

   165

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

   166

		}

   167

	}

   168

   169

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

   170

		if (!--v->breakdown_delay) {

   171

			v->breakdown_ctr = 0;

   172

			InvalidateWindow(WC_VEHICLE_VIEW, v->index);

   173

		}

   174

	}

   175

}

   176

   177

static void MarkShipDirty(Vehicle *v)

   178

{

   179

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

   180

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

   181

}

   182

   183

static void PlayShipSound(Vehicle *v)

   184

{

   185

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

   186

}

   187

   188

static const TileIndexDiff _dock_offs[] = {

   189

	TILE_XY(2, 0),

   190

	TILE_XY(-2, 0),

   191

	TILE_XY(0, 2),

   192

	TILE_XY(2, 0),

   193

	TILE_XY(0, -2),

   194

	TILE_XY(0,0),

   195

	TILE_XY(0,0),

   196

	TILE_XY(0,0),

   197

};

   198

   199

static void ProcessShipOrder(Vehicle *v)

   200

{

   201

	uint order;

   202

	Station *st;

   203

   204

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

   205

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

   206

			return;

   207

	}

   208

   209

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

   210

			SERVICE_INTERVAL) {

   211

		v->cur_order_index++;

   212

	}

   213

   214

   215

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

   216

		v->cur_order_index = 0;

   217

   218

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

   219

   220

	if (order == 0) {

   221

		v->next_order = OT_NOTHING;

   222

		v->dest_tile = 0;

   223

		return;

   224

	}

   225

   226

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

   227

		return;

   228

   229

	v->next_order = (byte)order;

   230

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

   231

   232

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

   233

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

   234

			v->last_station_visited = 0xFF;

   235

   236

		st = DEREF_STATION(order >> 8);

   237

		if (st->dock_tile != 0) {

   238

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

   239

		}

   240

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

   241

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

   242

	} else {

   243

		v->dest_tile = 0;

   244

	}

   245

	InvalidateVehicleOrderWidget(v);

   246

}

   247

   248

static void HandleShipLoading(Vehicle *v)

   249

{

   250

	if (v->next_order == OT_NOTHING)

   251

		return;

   252

   253

	if (v->next_order != OT_DUMMY) {

   254

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

   255

			return;

   256

   257

		if (--v->load_unload_time_rem)

   258

			return;

   259

   260

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

   261

			SET_EXPENSES_TYPE(EXPENSES_SHIP_INC);

   262

			if (LoadUnloadVehicle(v)) {

   263

				InvalidateWindow(WC_SHIPS_LIST, v->owner);

   264

				MarkShipDirty(v);

   265

			}

   266

			return;

   267

		}

   268

		PlayShipSound(v);

   269

   270

		{

   271

			byte b = v->next_order;

   272

			v->next_order = OT_LEAVESTATION;

   273

			if (!(b & OF_NON_STOP))

   274

				return;

   275

		}

   276

	}

   277

   278

	v->cur_order_index++;

   279

	InvalidateVehicleOrderWidget(v);

   280

}

   281

   282

static void UpdateShipDeltaXY(Vehicle *v, int dir)

   283

{

   284

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

   285

	static const uint32 _delta_xy_table[8] = {

   286

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

   287

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

   288

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

   289

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

   290

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

   291

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

   292

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

   293

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

   294

	};

   295

#undef MKIT

   296

	uint32 x = _delta_xy_table[dir];

   297

	v->x_offs = (byte)x;

   298

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

   299

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

   300

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

   301

}

   302

   303

static void RecalcShipStuff(Vehicle *v)

   304

{

   305

	UpdateShipDeltaXY(v, v->direction);

   306

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

   307

	MarkShipDirty(v);

   308

	InvalidateWindow(WC_VEHICLE_DEPOT, v->tile);

   309

}

   310

   311

static const TileIndexDiff _ship_leave_depot_offs[] = {

   312

	TILE_XY(-1,0),

   313

	TILE_XY(0,-1),

   314

};

   315

   316

static void CheckShipLeaveDepot(Vehicle *v)

   317

{

   318

	uint tile;

   319

	int d;

   320

	uint m;

   321

   322

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

   323

		return;

   324

   325

	tile = v->tile;

   326

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

   327

   328

	// Check first side

   329

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

   330

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

   331

	// Check second side

   332

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

   333

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

   334

	} else {

   335

		return;

   336

	}

   337

	v->direction = (byte)m;

   338

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

   339

	v->vehstatus &= ~VS_HIDDEN;

   340

   341

	v->cur_speed = 0;

   342

	RecalcShipStuff(v);

   343

   344

	PlayShipSound(v);

   345

}

   346

   347

static bool ShipAccelerate(Vehicle *v)

   348

{

   349

	uint spd;

   350

	byte t;

   351

   352

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

   353

   354

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

   355

	if (spd != v->cur_speed) {

   356

		v->cur_speed = spd;

   357

		if (_patches.vehicle_speed)

   358

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

   359

	}

   360

   361

	// Decrease somewhat when turning

   362

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

   363

		spd = spd * 3 >> 2;

   364

	}

   365

   366

	if (spd == 0)

   367

		return false;

   368

   369

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

   370

		return true;

   371

   372

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

   373

   374

	return (t < v->progress);

   375

}

   376

   377

   378

static int32 EstimateShipCost(uint16 engine_type);

   379

   380

static void ShipEnterDepot(Vehicle *v)

   381

{

   382

	byte t;

   383

   384

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

   385

	v->vehstatus |= VS_HIDDEN;

   386

	v->cur_speed = 0;

   387

	RecalcShipStuff(v);

   388

   389

	v->date_of_last_service = _date;

   390

	v->breakdowns_since_last_service = 0;

   391

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

   392

	InvalidateWindow(WC_VEHICLE_DETAILS, v->index);

   393

   394

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

   395

   396

	TriggerVehicle(v, VEHICLE_TRIGGER_DEPOT);

   397

   398

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

   399

		InvalidateWindow(WC_VEHICLE_VIEW, v->index);

   400

   401

		t = v->next_order;

   402

		v->next_order = OT_DUMMY;

   403

   404

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

   405

   406

		else if (t & 0x40) {

   407

			v->vehstatus |= VS_STOPPED;

   408

			if (v->owner == _local_player) {

   410

				AddNewsItem(

   411

					STR_981C_SHIP_IS_WAITING_IN_DEPOT,

   412

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

   413

					v->index,

   414

					0);

   415

			}

   416

		}

   417

	}

   418

}

   419

   420

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

   421

{

   422

	/* Check if station was ever visited before */

   423

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

   424

		uint32 flags;

   425

		st->had_vehicle_of_type |= HVOT_SHIP;

   427

		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);

   428

		AddNewsItem(

   429

			STR_9833_CITIZENS_CELEBRATE_FIRST,

   430

			flags,

   431

			v->index,

   432

			0);

   433

	}

   434

}

   435

   436

typedef struct {

   437

	uint skiptile;

   438

	uint dest_coords;

   439

	uint best_bird_dist;

   440

	uint best_length;

   441

} PathFindShip;

   442

   443

//extern void dbg_store_path();

   444

   445

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

   446

{

   447

	// Found dest?

   448

	if (tile == pfs->dest_coords) {

   449

		pfs->best_bird_dist = 0;

   450

   451

//		if (length < pfs->best_length)

   452

//			dbg_store_path();

   453

   454

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

   455

		return true;

   456

	}

   457

   458

	// Skip this tile in the calculation

   459

	if (tile != pfs->skiptile) {

   460

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

   461

	}

   462

   463

	return false;

   464

}

   465

   466

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

   467

	{ 0, 9, 2, 9 },

   468

	{ 9, 1, 9, 3 },

   469

	{ 9, 0, 3, 9 },

   470

	{ 1, 9, 9, 2 },

   471

	{ 3, 2, 9, 9 },

   472

	{ 9, 9, 1, 0 },

   473

};

   474

   475

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

   476

   477

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

   478

{

   479

	PathFindShip pfs;

   480

	int i, best_track;

   481

	uint best_bird_dist = 0;

   482

	uint best_length    = 0;

   483

	uint r;

   484

	byte ship_dir = v->direction & 3;

   485

   486

	pfs.dest_coords = v->dest_tile;

   487

	pfs.skiptile = skiptile;

   488

   489

	best_track = -1;

   490

   491

	do {

   492

		i = FIND_FIRST_BIT(bits);

   493

		bits = KILL_FIRST_BIT(bits);

   494

   495

		pfs.best_bird_dist = (uint)-1;

   496

		pfs.best_length = (uint)-1;

   497

   498

		FollowTrack(tile, 0x3800 | TRANSPORT_WATER, _ship_search_directions[i][dir], (TPFEnumProc*)ShipTrackFollower, NULL, &pfs);

   499

   500

		if (best_track >= 0) {

   501

			if (pfs.best_bird_dist != 0) {

   502

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

   503

				if (pfs.best_bird_dist > best_bird_dist) goto bad;

   504

				if (pfs.best_bird_dist < best_bird_dist) goto good;

   505

			} else {

   506

				if (pfs.best_length > best_length) goto bad;

   507

				if (pfs.best_length < best_length) goto good;

   508

			}

   509

   510

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

   511

			 * pick one randomly. */

   512

			r = (byte)Random();

   513

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

   514

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

   515

			if (r <= 127) goto bad;

   516

		}

   517

good:;

   518

		best_track = i;

   519

		best_bird_dist = pfs.best_bird_dist;

   520

		best_length = pfs.best_length;

   521

bad:;

   522

   523