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 = ShipVehInfo(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

	const ShipVehicleInfo *svi = ShipVehInfo(engine);

    42

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

    43

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

    44

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

    45

	SetDParam(3, svi->capacity);

    46

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

    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 = ShipVehInfo(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

   162

   163

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

   164

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

   165

			if (u)

   166

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

   167

		}

   168

	}

   169

   170

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

   171

		if (!--v->breakdown_delay) {

   172

			v->breakdown_ctr = 0;

   173

			InvalidateWindow(WC_VEHICLE_VIEW, v->index);

   174

		}

   175

	}

   176

}

   177

   178

static void MarkShipDirty(Vehicle *v)

   179

{

   180

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

   181

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

   182

}

   183

   184

static void PlayShipSound(Vehicle *v)

   185

{

   186

	SndPlayVehicleFx(ShipVehInfo(v->engine_type)->sfx, v);

   187

}

   188

   189

static const TileIndexDiff _dock_offs[] = {

   190

	TILE_XY(2, 0),

   191

	TILE_XY(-2, 0),

   192

	TILE_XY(0, 2),

   193

	TILE_XY(2, 0),

   194

	TILE_XY(0, -2),

   195

	TILE_XY(0,0),

   196

	TILE_XY(0,0),

   197

	TILE_XY(0,0),

   198

};

   199

   200

static void ProcessShipOrder(Vehicle *v)

   201

{

   202

	uint order;

   203

	Station *st;

   204

   205

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

   206

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

   207

			return;

   208

	}

   209

   210

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

   211

			SERVICE_INTERVAL) {

   212

		v->cur_order_index++;

   213

	}

   214

   215

   216

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

   217

		v->cur_order_index = 0;

   218

   219

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

   220

   221

	if (order == 0) {

   222

		v->next_order = OT_NOTHING;

   223

		v->dest_tile = 0;

   224

		return;

   225

	}

   226

   227

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

   228

		return;

   229

   230

	v->next_order = (byte)order;

   231

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

   232

   233

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

   234

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

   235

			v->last_station_visited = 0xFF;

   236

   237

		st = DEREF_STATION(order >> 8);

   238

		if (st->dock_tile != 0) {

   239

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

   240

		}

   241

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

   242

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

   243

	} else {

   244

		v->dest_tile = 0;

   245

	}

   246

	InvalidateVehicleOrderWidget(v);

   247

}

   248

   249

static void HandleShipLoading(Vehicle *v)

   250

{

   251

	if (v->next_order == OT_NOTHING)

   252

		return;

   253

   254

	if (v->next_order != OT_DUMMY) {

   255

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

   256

			return;

   257

   258

		if (--v->load_unload_time_rem)

   259

			return;

   260

   261

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

   262

			SET_EXPENSES_TYPE(EXPENSES_SHIP_INC);

   263

			if (LoadUnloadVehicle(v)) {

   264

				InvalidateWindow(WC_SHIPS_LIST, v->owner);

   265

				MarkShipDirty(v);

   266

			}

   267

			return;

   268

		}

   269

		PlayShipSound(v);

   270

   271

		{

   272

			byte b = v->next_order;

   273

			v->next_order = OT_LEAVESTATION;

   274

			if (!(b & OF_NON_STOP))

   275

				return;

   276

		}

   277

	}

   278

   279

	v->cur_order_index++;

   280

	InvalidateVehicleOrderWidget(v);

   281

}

   282

   283

static void UpdateShipDeltaXY(Vehicle *v, int dir)

   284

{

   285

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

   286

	static const uint32 _delta_xy_table[8] = {

   287

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

   288

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

   289

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

   290

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

   291

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

   292

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

   293

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

   294

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

   295

	};

   296

#undef MKIT

   297

	uint32 x = _delta_xy_table[dir];

   298

	v->x_offs = (byte)x;

   299

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

   300

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

   301

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

   302

}

   303

   304

static void RecalcShipStuff(Vehicle *v)

   305

{

   306

	UpdateShipDeltaXY(v, v->direction);

   307

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

   308

	MarkShipDirty(v);

   309

	InvalidateWindow(WC_VEHICLE_DEPOT, v->tile);

   310

}

   311

   312

static const TileIndexDiff _ship_leave_depot_offs[] = {

   313

	TILE_XY(-1,0),

   314

	TILE_XY(0,-1),

   315

};

   316

   317

static void CheckShipLeaveDepot(Vehicle *v)

   318

{

   319

	uint tile;

   320

	int d;

   321

	uint m;

   322

   323

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

   324

		return;

   325

   326

	tile = v->tile;

   327

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

   328

   329

	// Check first side

   330

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

   331

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

   332

	// Check second side

   333

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

   334

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

   335

	} else {

   336

		return;

   337

	}

   338

	v->direction = (byte)m;

   339

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

   340

	v->vehstatus &= ~VS_HIDDEN;

   341

   342

	v->cur_speed = 0;

   343

	RecalcShipStuff(v);

   344

   345

	PlayShipSound(v);

   346

}

   347

   348

static bool ShipAccelerate(Vehicle *v)

   349

{

   350

	uint spd;

   351

	byte t;

   352

   353

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

   354

   355

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

   356

	if (spd != v->cur_speed) {

   357

		v->cur_speed = spd;

   358

		if (_patches.vehicle_speed)

   359

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

   360

	}

   361

   362

	// Decrease somewhat when turning

   363

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

   364

		spd = spd * 3 >> 2;

   365

	}

   366

   367

	if (spd == 0)

   368

		return false;

   369

   370

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

   371

		return true;

   372

   373

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

   374

   375

	return (t < v->progress);

   376

}

   377

   378

   379

static int32 EstimateShipCost(uint16 engine_type);

   380

   381

static void ShipEnterDepot(Vehicle *v)

   382

{

   383

	byte t;

   384

   385

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

   386

	v->vehstatus |= VS_HIDDEN;

   387

	v->cur_speed = 0;

   388

	RecalcShipStuff(v);

   389

   390

	v->date_of_last_service = _date;

   391

	v->breakdowns_since_last_service = 0;

   392

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

   393

	InvalidateWindow(WC_VEHICLE_DETAILS, v->index);

   394

   395

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

   396

   397

	TriggerVehicle(v, VEHICLE_TRIGGER_DEPOT);

   398

   399

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

   400

		InvalidateWindow(WC_VEHICLE_VIEW, v->index);

   401

   402

		t = v->next_order;

   403

		v->next_order = OT_DUMMY;

   404

   405

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

   406

   407

		else if (t & 0x40) {

   408

			v->vehstatus |= VS_STOPPED;

   409

			if (v->owner == _local_player) {

   410

				SetDParam(0, v->unitnumber);

   411

				AddNewsItem(

   412

					STR_981C_SHIP_IS_WAITING_IN_DEPOT,

   413

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

   414

					v->index,

   415

					0);

   416

			}

   417

		}

   418

	}

   419

}

   420

   421

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

   422

{

   423

	/* Check if station was ever visited before */

   424

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

   425

		uint32 flags;

   426

		st->had_vehicle_of_type |= HVOT_SHIP;

   427

		SetDParam(0, st->index);

   428

		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);

   429

		AddNewsItem(

   430

			STR_9833_CITIZENS_CELEBRATE_FIRST,

   431

			flags,

   432

			v->index,

   433

			0);

   434

	}

   435

}

   436

   437

typedef struct {

   438

	uint skiptile;

   439

	uint dest_coords;

   440

	uint best_bird_dist;

   441

	uint best_length;

   442

} PathFindShip;

   443

   444

//extern void dbg_store_path();

   445

   446

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

   447

{

   448

	// Found dest?

   449

	if (tile == pfs->dest_coords) {

   450

		pfs->best_bird_dist = 0;

   451

   452

//		if (length < pfs->best_length)

   453

//			dbg_store_path();

   454

   455

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

   456

		return true;

   457

	}

   458

   459

	// Skip this tile in the calculation

   460

	if (tile != pfs->skiptile) {

   461

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

   462

	}

   463

   464

	return false;

   465

}

   466

   467

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

   468

	{ 0, 9, 2, 9 },

   469

	{ 9, 1, 9, 3 },

   470

	{ 9, 0, 3, 9 },

   471

	{ 1, 9, 9, 2 },

   472

	{ 3, 2, 9, 9 },

   473

	{ 9, 9, 1, 0 },

   474

};

   475

   476

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

   477

   478

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

   479

{

   480

	PathFindShip pfs;

   481

	int i, best_track;

   482

	uint best_bird_dist = 0;

   483

	uint best_length    = 0;

   484

	uint r;

   485

	byte ship_dir = v->direction & 3;

   486

   487

	pfs.dest_coords = v->dest_tile;

   488

	pfs.skiptile = skiptile;

   489

   490

	best_track = -1;

   491

   492

	do {

   493

		i = FIND_FIRST_BIT(bits);

   494

		bits = KILL_FIRST_BIT(bits);

   495

   496

		pfs.best_bird_dist = (uint)-1;

   497

		pfs.best_length = (uint)-1;

   498

   499

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

   500

   501

		if (best_track >= 0) {

   502

			if (pfs.best_bird_dist != 0) {

   503

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

   504

				if (pfs.best_bird_dist > best_bird_dist) goto bad;

   505

				if (pfs.best_bird_dist < best_bird_dist) goto good;

   506

			} else {

   507

				if (pfs.best_length > best_length) goto bad;

   508

				if (pfs.best_length < best_length) goto good;

   509

			}

   510

   511

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

   512

			 * pick one randomly. */

   513

			r = (byte)Random();

   514

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

   515

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

   516

			if (r <= 127) goto bad;

   517

		}

   518

good:;

   519

		best_track = i;

   520

		best_bird_dist = pfs.best_bird_dist;

   521

		best_length = pfs.best_length;

   522

bad:;