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/* $Id$ */

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#include "stdafx.h"

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#include <stdarg.h>

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     7

#include "openttd.h"

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#include "debug.h"

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#include "gfx.h"

    10

#include "fileio.h"

    11

#include "functions.h"

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#include "engine.h"

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#include "spritecache.h"

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#include "station.h"

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#include "sprite.h"

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#include "newgrf.h"

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#include "variables.h"

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#include "bridge.h"

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#include "economy.h"

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#include "newgrf_engine.h"

    21

    22

/* TTDPatch extended GRF format codec

    23

 * (c) Petr Baudis 2004 (GPL'd)

    24

 * Changes by Florian octo Forster are (c) by the OpenTTD development team.

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 *

    26

 * Contains portions of documentation by TTDPatch team.

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 * Thanks especially to Josef Drexler for the documentation as well as a lot

    28

 * of help at #tycoon. Also thanks to Michael Blunck for is GRF files which

    29

 * served as subject to the initial testing of this codec. */

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    31

    32

uint16 _custom_sprites_base;

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static int _skip_sprites; // XXX

    34

static uint _file_index; // XXX

    35

extern int _traininfo_vehicle_pitch;

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    37

static GRFFile *_cur_grffile;

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GRFFile *_first_grffile;

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static int _cur_spriteid;

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static int _cur_stage;

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static int nfo_line;

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    43

/* 32 * 8 = 256 flags. Apparently TTDPatch uses this many.. */

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static uint32 _ttdpatch_flags[8];

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    46

    47

typedef enum grfspec_feature {

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	GSF_TRAIN,

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	GSF_ROAD,

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	GSF_SHIP,

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	GSF_AIRCRAFT,

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	GSF_STATION,

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	GSF_CANAL,

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	GSF_BRIDGE,

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	GSF_TOWNHOUSE,

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	GSF_GLOBALVAR,

    57

} grfspec_feature;

    58

    59

    60

typedef void (*SpecialSpriteHandler)(byte *buf, int len);

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    62

static const int _vehcounts[4] = {

    63

	/* GSF_TRAIN */    NUM_TRAIN_ENGINES,

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	/* GSF_ROAD */     NUM_ROAD_ENGINES,

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	/* GSF_SHIP */     NUM_SHIP_ENGINES,

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	/* GSF_AIRCRAFT */ NUM_AIRCRAFT_ENGINES

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};

    68

    69

static const int _vehshifts[4] = {

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	/* GSF_TRAIN */    0,

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	/* GSF_ROAD */     ROAD_ENGINES_INDEX,

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	/* GSF_SHIP */     SHIP_ENGINES_INDEX,

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	/* GSF_AIRCRAFT */ AIRCRAFT_ENGINES_INDEX,

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};

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    76

static uint16 cargo_allowed[TOTAL_NUM_ENGINES];

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static uint16 cargo_disallowed[TOTAL_NUM_ENGINES];

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    79

/* Debugging messages policy:

    80

 *

    81

 * These should be the severities used for direct DEBUG() calls

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 * (there is room for exceptions, but you have to have a good cause):

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 *

    84

 * 0..2 - dedicated to grfmsg()

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 * 3

    86

 * 4

    87

 * 5

    88

 * 6 - action handler entry reporting - one per action

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 * 7 - basic action progress reporting - in loops, only single one allowed

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 * 8 - more detailed progress reporting - less important stuff, in deep loops etc

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 * 9 - extremely detailed progress reporting - detailed reports inside of deep loops and so

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 */

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    94

    95

typedef enum grfmsg_severity {

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	GMS_NOTICE,

    97

	GMS_WARN,

    98

	GMS_ERROR,

    99

	GMS_FATAL,

   100

} grfmsg_severity;

   101

   102

static void CDECL grfmsg(grfmsg_severity severity, const char *str, ...)

   103

{

   104

	static const char* const severitystr[] = {

   105

		"Notice",

   106

		"Warning",

   107

		"Error",

   108

		"Fatal"

   109

	};

   110

	int export_severity = 0;

   111

	char buf[1024];

   112

	va_list va;

   113

   114

	va_start(va, str);

   115

	vsnprintf(buf, sizeof(buf), str, va);

   116

	va_end(va);

   117

   118

	export_severity = 2 - (severity == GMS_FATAL ? 2 : severity);

   119

	DEBUG(grf, export_severity) ("[%s:%d][%s] %s", _cur_grffile->filename, nfo_line, severitystr[severity], buf);

   120

}

   121

   122

   123

#define check_length(real, wanted, where) \

   124

do { \

   125

	if (real < wanted) { \

   126

		grfmsg(GMS_ERROR, "%s: Invalid special sprite length %d (expected %d)!", \

   127

		       where, real, wanted); \

   128

		return; \

   129

	} \

   130

} while (0)

   131

   132

   133

static inline byte grf_load_byte(byte **buf)

   134

{

   135

	return *(*buf)++;

   136

}

   137

   138

static uint16 grf_load_word(byte **buf)

   139

{

   140

	uint16 val;

   141

	byte *p = *buf;

   142

	val = p[0];

   143

	val |= p[1] << 8;

   144

	*buf = p + 2;

   145

	return val;

   146

}

   147

   148

static uint16 grf_load_extended(byte** buf)

   149

{

   150

	uint16 val;

   151

	val = grf_load_byte(buf);

   152

	if (val == 0xFF) val = grf_load_word(buf);

   153

	return val;

   154

}

   155

   156

static uint32 grf_load_dword(byte **buf)

   157

{

   158

	uint32 val;

   159

	byte *p = *buf;

   160

	val = p[0];

   161

	val |= p[1] << 8;

   162

	val |= p[2] << 16;

   163

	val |= p[3] << 24;

   164

	*buf = p + 4;

   165

	return val;

   166

}

   167

   168

   169

static GRFFile *GetFileByGRFID(uint32 grfid)

   170

{

   171

	GRFFile *file;

   172

   173

	for (file = _first_grffile; file != NULL; file = file->next) {

   174

		if (file->grfid == grfid) break;

   175

	}

   176

	return file;

   177

}

   178

   179

static GRFFile *GetFileByFilename(const char *filename)

   180

{

   181

	GRFFile *file;

   182

   183

	for (file = _first_grffile; file != NULL; file = file->next) {

   184

		if (strcmp(file->filename, filename) == 0) break;

   185

	}

   186

	return file;

   187

}

   188

   189

   190

typedef bool (*VCI_Handler)(uint engine, int numinfo, int prop, byte **buf, int len);

   191

   192

#define FOR_EACH_OBJECT for (i = 0; i < numinfo; i++)

   193

   194

static void dewagonize(int condition, int engine)

   195

{

   196

	EngineInfo *ei = &_engine_info[engine];

   197

	RailVehicleInfo *rvi = &_rail_vehicle_info[engine];

   198

   199

	if (condition != 0) {

   200

		ei->unk2 &= ~0x80;

   201

		rvi->flags &= ~2;

   202

	} else {

   203

		ei->unk2 |= 0x80;

   204

		rvi->flags |= 2;

   205

	}

   206

}

   207

   208

static bool RailVehicleChangeInfo(uint engine, int numinfo, int prop, byte **bufp, int len)

   209

{

   210

	EngineInfo *ei = &_engine_info[engine];

   211

	RailVehicleInfo *rvi = &_rail_vehicle_info[engine];

   212

	byte *buf = *bufp;

   213

	int i;

   214

	bool ret = false;

   215

   216

	switch (prop) {

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		case 0x05: // Track type

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			FOR_EACH_OBJECT {

   219

				uint8 tracktype = grf_load_byte(&buf);

   220

   221

				switch (tracktype) {

   222

					case 0: ei[i].railtype = RAILTYPE_RAIL; break;

   223

					case 1: ei[i].railtype = RAILTYPE_MONO; break;

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					case 2: ei[i].railtype = RAILTYPE_MAGLEV; break;

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					default:

   226

						grfmsg(GMS_WARN, "RailVehicleChangeInfo: Invalid track type %d specified, ignoring.", tracktype);

   227

						break;

   228

				}

   229

			}

   230

			break;

   231

   232

		case 0x08: { /* AI passenger service */

   233

			/* TODO */

   234

			FOR_EACH_OBJECT {

   235

				grf_load_byte(&buf);

   236

			}

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			ret = true;

   238

		} break;

   239

		case 0x09: { /* Speed */

   240

			FOR_EACH_OBJECT {

   241

				uint16 speed = grf_load_word(&buf);

   242

				if (speed == 0xFFFF) speed = 0;

   243

   244

				rvi[i].max_speed = speed;

   245

			}

   246

		} break;

   247

		case 0x0B: { /* Power */

   248

			FOR_EACH_OBJECT {

   249

				uint16 power = grf_load_word(&buf);

   250

   251

				if (rvi[i].flags & RVI_MULTIHEAD) power /= 2;

   252

   253

				rvi[i].power = power;

   254

				dewagonize(power, engine + i);

   255

			}

   256

		} break;

   257

		case 0x0D: { /* Running cost factor */

   258

			FOR_EACH_OBJECT {

   259

				uint8 runcostfact = grf_load_byte(&buf);

   260

   261

				if (rvi[i].flags & RVI_MULTIHEAD) runcostfact /= 2;

   262

   263

				rvi[i].running_cost_base = runcostfact;

   264

			}

   265

		} break;

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		case 0x0E: { /* Running cost base */

   267

			FOR_EACH_OBJECT {

   268

				uint32 base = grf_load_dword(&buf);

   269

   270

				switch (base) {

   271

					case 0x4C30: rvi[i].running_cost_class = 0; break;

   272

					case 0x4C36: rvi[i].running_cost_class = 1; break;

   273

					case 0x4C3C: rvi[i].running_cost_class = 2; break;

   274

				}

   275

			}

   276

		} break;

   277

		case 0x12: { /* Sprite ID */

   278

			FOR_EACH_OBJECT {

   279

				uint8 spriteid = grf_load_byte(&buf);

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   281

				/* TTD sprite IDs point to a location in a 16bit array, but we use it

   282

				 * as an array index, so we need it to be half the original value. */

   283

				if (spriteid < 0xFD) spriteid >>= 1;

   284

   285

				rvi[i].image_index = spriteid;

   286

			}

   287

		} break;

   288

		case 0x13: { /* Dual-headed */

   289

			FOR_EACH_OBJECT {

   290

				uint8 dual = grf_load_byte(&buf);

   291

   292

				if (dual != 0) {

   293

					if (!(rvi[i].flags & RVI_MULTIHEAD)) {

   294

						// adjust power and running cost if needed

   295

						rvi[i].power /= 2;

   296

						rvi[i].running_cost_base /= 2;

   297

					}

   298

					rvi[i].flags |= RVI_MULTIHEAD;

   299

				} else {

   300

					if (rvi[i].flags & RVI_MULTIHEAD) {

   301

						// adjust power and running cost if needed

   302

						rvi[i].power *= 2;

   303

						rvi[i].running_cost_base *= 2;

   304

					}

   305

					rvi[i].flags &= ~RVI_MULTIHEAD;

   306

				}

   307

			}

   308

		} break;

   309

		case 0x14: { /* Cargo capacity */

   310

			FOR_EACH_OBJECT {

   311

				uint8 capacity = grf_load_byte(&buf);

   312

   313

				rvi[i].capacity = capacity;

   314

			}

   315

		} break;

   316

		case 0x15: { /* Cargo type */

   317

			FOR_EACH_OBJECT {

   318

				uint8 ctype = grf_load_byte(&buf);

   319

   320

				if (ctype < NUM_CARGO) {

   321

					rvi[i].cargo_type = ctype;

   322

				} else {

   323

					grfmsg(GMS_NOTICE, "RailVehicleChangeInfo: Invalid cargo type %d, ignoring.", ctype);

   324

				}

   325

			}

   326

		} break;

   327

		case 0x16: { /* Weight */

   328

			FOR_EACH_OBJECT {

   329

				uint8 weight = grf_load_byte(&buf);

   330

   331

				SB(rvi[i].weight, 0, 8, weight);

   332

			}

   333

		} break;

   334

		case 0x17: { /* Cost factor */

   335

			FOR_EACH_OBJECT {

   336

				uint8 cfactor = grf_load_byte(&buf);

   337

   338

				rvi[i].base_cost = cfactor;

   339

			}

   340

		} break;

   341

   342

		case 0x18: // AI rank

   343

			FOR_EACH_OBJECT {

   344

				rvi[i].ai_rank = grf_load_byte(&buf);

   345

			}

   346

			break;

   347

   348

		case 0x19: { /* Engine traction type */

   349

			/* What do the individual numbers mean?

   350

			 * 0x00 .. 0x07: Steam

   351

			 * 0x08 .. 0x27: Diesel

   352

			 * 0x28 .. 0x31: Electric

   353

			 * 0x32 .. 0x37: Monorail

   354

			 * 0x38 .. 0x41: Maglev

   355

			 */

   356

			FOR_EACH_OBJECT {

   357

				uint8 traction = grf_load_byte(&buf);

   358

				int engclass;

   359

   360

				if (traction <= 0x07) {

   361

					engclass = 0;

   362

				} else if (traction <= 0x27) {

   363

					engclass = 1;

   364

				} else if (traction <= 0x41) {

   365

					engclass = 2;

   366

				} else {

   367

					break;

   368

				}

   369

   370

				rvi[i].engclass = engclass;

   371

			}

   372

		} break;

   373

		case 0x1A: // Alter purchase list sort order.

   374

			FOR_EACH_OBJECT {

   375

				EngineID pos = grf_load_byte(&buf);

   376

   377

				if (pos < NUM_TRAIN_ENGINES) {

   378

					AlterRailVehListOrder(engine + i, pos);

   379

				} else {

   380

					grfmsg(GMS_NOTICE, "RailVehicleChangeInfo: Invalid train engine ID %d, ignoring.", pos);

   381

				}

   382

			}

   383

			break;

   384

   385

		case 0x1B: { /* Powered wagons power bonus */

   386

			FOR_EACH_OBJECT {

   387

				uint16 wag_power = grf_load_word(&buf);

   388

   389

				rvi[i].pow_wag_power = wag_power;

   390

			}

   391

		} break;

   392

		case 0x1D: { /* Refit cargo */

   393

			FOR_EACH_OBJECT {

   394

				uint32 refit_mask = grf_load_dword(&buf);

   395

   396

				_engine_info[engine + i].refit_mask = refit_mask;

   397

			}

   398

		} break;

   399

		case 0x1E: { /* Callback */

   400

			FOR_EACH_OBJECT {

   401

				byte callbacks = grf_load_byte(&buf);

   402

   403

				rvi[i].callbackmask = callbacks;

   404

			}

   405

		} break;

   406

		case 0x21: { /* Shorter vehicle */

   407

			FOR_EACH_OBJECT {

   408

				byte shorten_factor = grf_load_byte(&buf);

   409

   410

				rvi[i].shorten_factor = shorten_factor;

   411

			}

   412

		} break;

   413

		case 0x22: { /* Visual effect */

   414

			// see note in engine.h about rvi->visual_effect

   415

			FOR_EACH_OBJECT {

   416

				byte visual = grf_load_byte(&buf);

   417

   418

				rvi[i].visual_effect = visual;

   419

			}

   420

		} break;

   421

		case 0x23: { /* Powered wagons weight bonus */

   422

			FOR_EACH_OBJECT {

   423

				byte wag_weight = grf_load_byte(&buf);

   424

   425

				rvi[i].pow_wag_weight = wag_weight;

   426

			}

   427

		} break;

   428

		case 0x24: { /* High byte of vehicle weight */

   429

			FOR_EACH_OBJECT {

   430

				byte weight = grf_load_byte(&buf);

   431

   432

				if (weight > 4) {

   433

					grfmsg(GMS_NOTICE, "RailVehicleChangeInfo: Nonsensical weight of %d tons, ignoring.", weight << 8);

   434

				} else {

   435

					SB(rvi[i].weight, 8, 8, weight);

   436

				}

   437

			}

   438

		} break;

   439

		case 0x28: { /* Cargo classes allowed */

   440

			FOR_EACH_OBJECT {

   441

				cargo_allowed[engine + i] = grf_load_word(&buf);

   442

			}

   443

		} break;

   444

		case 0x29: { /* Cargo classes disallowed */

   445

			FOR_EACH_OBJECT {

   446

				cargo_disallowed[engine + i] = grf_load_word(&buf);

   447

			}

   448

		} break;

   449

		/* TODO */

   450

		/* Fall-through for unimplemented one byte long properties. */

   451

		case 0x1C:	/* Refit cost */

   452

		case 0x1F:	/* Tractive effort */

   453

		case 0x20:	/* Air drag */

   454

		case 0x25:	/* User-defined bit mask to set when checking veh. var. 42 */

   455

		case 0x26:	/* Retire vehicle early */

   456

		case 0x27:	/* Miscellaneous flags */

   457

			{

   458

			/* TODO */

   459

			FOR_EACH_OBJECT {

   460

				grf_load_byte(&buf);

   461

			}

   462

			ret = true;

   463

		}	break;

   464

		default:

   465

			ret = true;

   466

	}

   467

	*bufp = buf;

   468

	return ret;

   469

}

   470

   471

static bool RoadVehicleChangeInfo(uint engine, int numinfo, int prop, byte **bufp, int len)

   472

{

   473

	RoadVehicleInfo *rvi = &_road_vehicle_info[engine];

   474

	byte *buf = *bufp;

   475

	int i;

   476

	bool ret = false;

   477

   478

	switch (prop) {

   479

		case 0x08: { /* Speed */

   480

			FOR_EACH_OBJECT {

   481

				uint8 speed = grf_load_byte(&buf);

   482

   483

				rvi[i].max_speed = speed; // ?? units

   484

			}

   485

		} break;

   486

		case 0x09: { /* Running cost factor */

   487

			FOR_EACH_OBJECT {

   488

				uint8 runcost = grf_load_byte(&buf);

   489

   490

				rvi[i].running_cost = runcost;

   491

			}

   492

		} break;

   493

		case 0x0A: { /* Running cost base */

   494

			/* TODO: I have no idea. --pasky */

   495

			FOR_EACH_OBJECT {

   496

				grf_load_dword(&buf);

   497

			}

   498

			ret = true;

   499

		} break;

   500

		case 0x0E: { /* Sprite ID */

   501

			FOR_EACH_OBJECT {

   502

				uint8 spriteid = grf_load_byte(&buf);

   503