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/* $Id$ */

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#include "stdafx.h"

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#include <stdarg.h>

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#include "openttd.h"

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#include "debug.h"

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#include "gfx.h"

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#include "fileio.h"

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#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 "string.h"

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#include "table/strings.h"

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#include "bridge.h"

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#include "economy.h"

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#include "newgrf_engine.h"

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#include "vehicle.h"

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#include "newgrf_text.h"

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#include "table/sprites.h"

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#include "fontcache.h"

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#include "date.h"

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#include "currency.h"

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#include "sound.h"

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#include "newgrf_config.h"

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#include "newgrf_sound.h"

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#include "newgrf_spritegroup.h"

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    34

/* TTDPatch extended GRF format codec

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

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

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 *

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 * Contains portions of documentation by TTDPatch team.

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

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

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

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    43

    44

static int _skip_sprites; // XXX

    45

static uint _file_index; // XXX

    46

SpriteID _signal_base;

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SpriteID _coast_base;

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    49

static GRFFile *_cur_grffile;

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GRFFile *_first_grffile;

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static SpriteID _cur_spriteid;

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static GrfLoadingStage _cur_stage;

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static uint32 _nfo_line;

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    55

static GRFConfig *_cur_grfconfig;

    56

    57

/* Miscellaneous GRF features, set by Action 0x0D, parameter 0x9E */

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static byte _misc_grf_features = 0;

    59

    60

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

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static uint32 _ttdpatch_flags[8];

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    63

/* Used by Action 0x06 to preload a pseudo sprite and modify its content */

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static byte *_preload_sprite = NULL;

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    66

/* Set if any vehicle is loaded which uses 2cc (two company colours) */

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bool _have_2cc = false;

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    69

    70

typedef enum GrfDataType {

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	GDT_SOUND,

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} GrfDataType;

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    74

static byte _grf_data_blocks;

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static GrfDataType _grf_data_type;

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    77

    78

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,

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	GSF_INDUSTRYTILES,

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	GSF_INDUSTRIES,

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	GSF_CARGOS,

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	GSF_SOUNDFX,

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} grfspec_feature;

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    94

    95

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

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    97

static const int _vehcounts[4] = {

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	/* 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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};

   103

   104

static const int _vehshifts[4] = {

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	/* GSF_TRAIN */    0,

   106

	/* GSF_ROAD */     ROAD_ENGINES_INDEX,

   107

	/* GSF_SHIP */     SHIP_ENGINES_INDEX,

   108

	/* GSF_AIRCRAFT */ AIRCRAFT_ENGINES_INDEX,

   109

};

   110

   111

enum {

   112

	MAX_STATIONS = 256,

   113

};

   114

   115

static uint16 cargo_allowed[TOTAL_NUM_ENGINES];

   116

static uint16 cargo_disallowed[TOTAL_NUM_ENGINES];

   117

   118

/* Contains the GRF ID of the owner of a vehicle if it has been reserved */

   119

static uint32 _grm_engines[TOTAL_NUM_ENGINES];

   120

   121

/* Debugging messages policy:

   122

 *

   123

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

   124

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

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 *

   126

 * 0..2 - dedicated to grfmsg()

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 * 3

   128

 * 4

   129

 * 5

   130

 * 6 - action handler entry reporting - one per action

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

   132

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

   133

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

   134

 */

   135

   136

   137

typedef enum grfmsg_severity {

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	GMS_NOTICE,

   139

	GMS_WARN,

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	GMS_ERROR,

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	GMS_FATAL,

   142

} grfmsg_severity;

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   144

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

   145

{

   146

	static const char* const severitystr[] = {

   147

		"Notice",

   148

		"Warning",

   149

		"Error",

   150

		"Fatal"

   151

	};

   152

	int export_severity = 0;

   153

	char buf[1024];

   154

	va_list va;

   155

   156

	va_start(va, str);

   157

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

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	va_end(va);

   159

   160

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

   161

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

   162

}

   163

   164

   165

#define check_length(real, wanted, where) \

   166

do { \

   167

	if (real < wanted) { \

   168

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

   169

		       where, real, wanted); \

   170

		return; \

   171

	} \

   172

} while (0)

   173

   174

   175

static inline byte grf_load_byte(byte **buf)

   176

{

   177

	return *(*buf)++;

   178

}

   179

   180

static uint16 grf_load_word(byte **buf)

   181

{

   182

	uint16 val = grf_load_byte(buf);

   183

	return val | (grf_load_byte(buf) << 8);

   184

}

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   186

static uint16 grf_load_extended(byte** buf)

   187

{

   188

	uint16 val;

   189

	val = grf_load_byte(buf);

   190

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

   191

	return val;

   192

}

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   194

static uint32 grf_load_dword(byte **buf)

   195

{

   196

	uint32 val = grf_load_word(buf);

   197

	return val | (grf_load_word(buf) << 16);

   198

}

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   200

static uint32 grf_load_var(byte size, byte **buf)

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{

   202

	switch (size) {

   203

		case 1: return grf_load_byte(buf);

   204

		case 2: return grf_load_word(buf);

   205

		case 4: return grf_load_dword(buf);

   206

		default:

   207

			NOT_REACHED();

   208

			return 0;

   209

	}

   210

}

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   212

static const char *grf_load_string(byte **buf, size_t max_len)

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{

   214

	const char *string   = *(const char **)buf;

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	size_t string_length = ttd_strnlen(string, max_len);

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   217

	if (string_length == max_len) {

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		/* String was not NUL terminated, so make sure it is now. */

   219

		(*buf)[string_length - 1] = '\0';

   220

		DEBUG(grf, 7) ("String was not terminated with a zero byte.");

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	} else {

   222

		/* Increase the string length to include the NUL byte. */

   223

		string_length++;

   224

	}

   225

	*buf += string_length;

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   227

	return string;

   228

}

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   230

static GRFFile *GetFileByGRFID(uint32 grfid)

   231

{

   232

	GRFFile *file;

   233

   234

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

   235

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

   236

	}

   237

	return file;

   238

}

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   240

static GRFFile *GetFileByFilename(const char *filename)

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{

   242

	GRFFile *file;

   243

   244

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

   245

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

   246

	}

   247

	return file;

   248

}

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   250

   251

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

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   253

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

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   255

static void dewagonize(int condition, int engine)

   256

{

   257

	EngineInfo *ei = &_engine_info[engine];

   258

	RailVehicleInfo *rvi = &_rail_vehicle_info[engine];

   259

   260

	if (condition != 0) {

   261

		ei->unk2 &= ~0x80;

   262

		rvi->flags &= ~2;

   263

	} else {

   264

		ei->unk2 |= 0x80;

   265

		rvi->flags |= 2;

   266

	}

   267

}

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   269

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

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{

   271

	EngineInfo *ei = &_engine_info[engine];

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	RailVehicleInfo *rvi = &_rail_vehicle_info[engine];

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	byte *buf = *bufp;

   274

	int i;

   275

	bool ret = false;

   276

   277

	switch (prop) {

   278

		case 0x05: /* Track type */

   279

			FOR_EACH_OBJECT {

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				uint8 tracktype = grf_load_byte(&buf);

   281

   282

				switch (tracktype) {

   283

					case 0: ei[i].railtype = rvi[i].engclass == 2 ? RAILTYPE_ELECTRIC : RAILTYPE_RAIL; break;

   284

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

   285

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

   286

					default:

   287

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

   288

						break;

   289

				}

   290

			}

   291

			break;

   292

   293

		case 0x08: /* AI passenger service */

   294

			/* TODO */

   295

			FOR_EACH_OBJECT grf_load_byte(&buf);

   296

			ret = true;

   297

			break;

   298

   299

		case 0x09: /* Speed (1 unit is 1 kmh) */

   300

			FOR_EACH_OBJECT {

   301

				uint16 speed = grf_load_word(&buf);

   302

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

   303

   304

				rvi[i].max_speed = speed;

   305

			}

   306

			break;

   307

   308

		case 0x0B: /* Power */

   309

			FOR_EACH_OBJECT {

   310

				uint16 power = grf_load_word(&buf);

   311

   312

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

   313

   314

				rvi[i].power = power;

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				dewagonize(power, engine + i);

   316

			}

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			break;

   318

   319

		case 0x0D: /* Running cost factor */

   320

			FOR_EACH_OBJECT {

   321

				uint8 runcostfact = grf_load_byte(&buf);

   322

   323

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

   324

   325

				rvi[i].running_cost_base = runcostfact;

   326

			}

   327

			break;

   328

   329

		case 0x0E: /* Running cost base */

   330

			FOR_EACH_OBJECT {

   331

				uint32 base = grf_load_dword(&buf);

   332

   333

				switch (base) {

   334

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

   335

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

   336

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

   337

					case 0: break; /* Used by wagons */

   338

					default:

   339

						grfmsg(GMS_WARN, "RailVehicleChangeInfo: Unsupported running cost base 0x%04X, ignoring.", base);

   340

						break;

   341

				}

   342

			}

   343

			break;

   344

   345

		case 0x12: /* Sprite ID */

   346

			FOR_EACH_OBJECT {

   347

				uint8 spriteid = grf_load_byte(&buf);

   348

   349

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

   350

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

   351

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

   352

   353

				rvi[i].image_index = spriteid;

   354

			}

   355

			break;

   356

   357

		case 0x13: /* Dual-headed */

   358

			FOR_EACH_OBJECT {

   359

				uint8 dual = grf_load_byte(&buf);

   360

   361

				if (dual != 0) {

   362

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

   363

						// adjust power and running cost if needed

   364

						rvi[i].power /= 2;

   365

						rvi[i].running_cost_base /= 2;

   366

					}

   367

					rvi[i].flags |= RVI_MULTIHEAD;

   368

				} else {

   369

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

   370

						// adjust power and running cost if needed

   371

						rvi[i].power *= 2;

   372

						rvi[i].running_cost_base *= 2;

   373

					}

   374

					rvi[i].flags &= ~RVI_MULTIHEAD;

   375

				}

   376

			}

   377

			break;

   378

   379

		case 0x14: /* Cargo capacity */

   380

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

   381

			break;

   382

   383

		case 0x15: /* Cargo type */

   384

			FOR_EACH_OBJECT {

   385

				uint8 ctype = grf_load_byte(&buf);

   386

   387

				if (ctype < NUM_CARGO) {

   388

					rvi[i].cargo_type = ctype;

   389

				} else {

   390

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

   391

				}

   392

			}

   393

			break;

   394

   395

		case 0x16: /* Weight */

   396

			FOR_EACH_OBJECT SB(rvi[i].weight, 0, 8, grf_load_byte(&buf));

   397

			break;

   398

   399

		case 0x17: /* Cost factor */

   400

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

   401

			break;

   402

   403

		case 0x18: /* AI rank */

   404

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

   405

			break;

   406

   407

		case 0x19: /* Engine traction type */

   408

			/* What do the individual numbers mean?

   409

			 * 0x00 .. 0x07: Steam

   410

			 * 0x08 .. 0x27: Diesel

   411

			 * 0x28 .. 0x31: Electric

   412

			 * 0x32 .. 0x37: Monorail

   413

			 * 0x38 .. 0x41: Maglev

   414

			 */

   415

			FOR_EACH_OBJECT {

   416

				uint8 traction = grf_load_byte(&buf);

   417

				int engclass;

   418

   419

				if (traction <= 0x07) {

   420

					engclass = 0;

   421

				} else if (traction <= 0x27) {

   422

					engclass = 1;

   423

				} else if (traction <= 0x31) {

   424

					engclass = 2;

   425

				} else if (traction <= 0x41) {

   426

					engclass = 2;

   427

				} else {

   428

					break;

   429

				}

   430

				if (ei[i].railtype == RAILTYPE_RAIL     && engclass == 2) ei[i].railtype = RAILTYPE_ELECTRIC;

   431

				if (ei[i].railtype == RAILTYPE_ELECTRIC && engclass != 2) ei[i].railtype = RAILTYPE_RAIL;

   432

   433

				rvi[i].engclass = engclass;

   434

			}

   435

			break;

   436

   437

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

   438

			FOR_EACH_OBJECT {

   439

				EngineID pos = grf_load_byte(&buf);

   440

   441

				if (pos < NUM_TRAIN_ENGINES) {

   442

					AlterRailVehListOrder(engine + i, pos);

   443

				} else {

   444

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

   445

				}

   446

			}

   447

			break;

   448

   449

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

   450

			FOR_EACH_OBJECT rvi[i].pow_wag_power = grf_load_word(&buf);

   451

			break;

   452

   453

		case 0x1C: /* Refit cost */

   454

			FOR_EACH_OBJECT ei[i].refit_cost = grf_load_byte(&buf);

   455

			break;

   456

   457

		case 0x1D: /* Refit cargo */

   458

			FOR_EACH_OBJECT ei[i].refit_mask = grf_load_dword(&buf);

   459

			break;

   460

   461

		case 0x1E: /* Callback */

   462

			FOR_EACH_OBJECT ei[i].callbackmask = grf_load_byte(&buf);

   463

			break;

   464

   465

		case 0x21: /* Shorter vehicle */

   466

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

   467

			break;

   468

   469

		case 0x22: /* Visual effect */

   470

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

   471

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

   472

			break;

   473

   474

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

   475

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

   476

			break;

   477

   478

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

   479

			FOR_EACH_OBJECT {

   480

				byte weight = grf_load_byte(&buf);

   481

   482

				if (weight > 4) {

   483

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

   484

				} else {

   485

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

   486

				}

   487

			}

   488

			break;

   489

   490

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