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/* $Id$ */

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/** @file newgrf.cpp */

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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 "town.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 "landscape.h"

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#include "sound.h"

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#include "newgrf_config.h"

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#include "newgrf_house.h"

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#include "newgrf_sound.h"

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#include "newgrf_spritegroup.h"

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#include "helpers.hpp"

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#include "table/town_land.h"

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#include "cargotype.h"

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/* TTDPatch extended GRF format codec

    43

 * (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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 *

    46

 * Contains portions of documentation by TTDPatch team.

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

    48

 * 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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    51

    52

static int _skip_sprites; // XXX

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static uint _file_index; // XXX

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SpriteID _signal_base;

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SpriteID _coast_base;

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    57

static GRFFile *_cur_grffile;

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GRFFile *_first_grffile;

    59

static SpriteID _cur_spriteid;

    60

static GrfLoadingStage _cur_stage;

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static uint32 _nfo_line;

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    63

static GRFConfig *_cur_grfconfig;

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    65

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

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static byte _misc_grf_features = 0;

    67

    68

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

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static uint32 _ttdpatch_flags[8];

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    71

/* 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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    74

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

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bool _have_2cc = false;

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    77

/* Set if there are any newhouses loaded. */

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bool _have_newhouses = false;

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    80

    81

enum GrfDataType {

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	GDT_SOUND,

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};

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    85

static byte _grf_data_blocks;

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static GrfDataType _grf_data_type;

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    88

    89

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,

   103

};

   104

   105

   106

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

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   108

static const uint _vehcounts[4] = {

   109

	/* GSF_TRAIN */    NUM_TRAIN_ENGINES,

   110

	/* GSF_ROAD */     NUM_ROAD_ENGINES,

   111

	/* GSF_SHIP */     NUM_SHIP_ENGINES,

   112

	/* GSF_AIRCRAFT */ NUM_AIRCRAFT_ENGINES

   113

};

   114

   115

static const uint _vehshifts[4] = {

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	/* GSF_TRAIN */    0,

   117

	/* GSF_ROAD */     ROAD_ENGINES_INDEX,

   118

	/* GSF_SHIP */     SHIP_ENGINES_INDEX,

   119

	/* GSF_AIRCRAFT */ AIRCRAFT_ENGINES_INDEX,

   120

};

   121

   122

enum {

   123

	MAX_STATIONS = 256,

   124

};

   125

   126

static uint16 cargo_allowed[TOTAL_NUM_ENGINES];

   127

static uint16 cargo_disallowed[TOTAL_NUM_ENGINES];

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   129

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

   130

static uint32 _grm_engines[TOTAL_NUM_ENGINES];

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   132

/** DEBUG() function dedicated to newGRF debugging messages

   133

 * Function is essentialy the same as DEBUG(grf, severity, ...) with the

   134

 * addition of file:line information when parsing grf files.

   135

 * NOTE: for the above reason(s) grfmsg() should ONLY be used for

   136

 * loading/parsing grf files, not for runtime debug messages as there

   137

 * is no file information available during that time.

   138

 * @param severity debugging severity level, see debug.h

   139

 * @param debugging message in printf() format */

   140

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

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{

   142

	char buf[1024];

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	va_list va;

   144

   145

	va_start(va, str);

   146

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

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	va_end(va);

   148

   149

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

   150

}

   151

   152

static inline bool check_length(int real, int wanted, const char *str)

   153

{

   154

	if (real >= wanted) return true;

   155

	grfmsg(0, "%s: Invalid pseudo sprite length %d (expected %d)!", str, real, wanted);

   156

	return false;

   157

}

   158

   159

static inline byte grf_load_byte(byte **buf)

   160

{

   161

	return *(*buf)++;

   162

}

   163

   164

static uint16 grf_load_word(byte **buf)

   165

{

   166

	uint16 val = grf_load_byte(buf);

   167

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

   168

}

   169

   170

static uint16 grf_load_extended(byte** buf)

   171

{

   172

	uint16 val;

   173

	val = grf_load_byte(buf);

   174

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

   175

	return val;

   176

}

   177

   178

static uint32 grf_load_dword(byte **buf)

   179

{

   180

	uint32 val = grf_load_word(buf);

   181

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

   182

}

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   184

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

   185

{

   186

	switch (size) {

   187

		case 1: return grf_load_byte(buf);

   188

		case 2: return grf_load_word(buf);

   189

		case 4: return grf_load_dword(buf);

   190

		default:

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			NOT_REACHED();

   192

			return 0;

   193

	}

   194

}

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   196

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

   197

{

   198

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

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	size_t string_length = ttd_strnlen(string, max_len);

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   201

	if (string_length == max_len) {

   202

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

   203

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

   204

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

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	} else {

   206

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

   207

		string_length++;

   208

	}

   209

	*buf += string_length;

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   211

	return string;

   212

}

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   214

static GRFFile *GetFileByGRFID(uint32 grfid)

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{

   216

	GRFFile *file;

   217

   218

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

   219

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

   220

	}

   221

	return file;

   222

}

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   224

static GRFFile *GetFileByFilename(const char *filename)

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{

   226

	GRFFile *file;

   227

   228

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

   229

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

   230

	}

   231

	return file;

   232

}

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   234

   235

/** Used when setting an object's property to map to the GRF's strings

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 * while taking in consideration the "drift" between TTDPatch string system and OpenTTD's one

   237

 * @param str StringID that we want to have the equivalent in OoenTTD

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 * @return the properly adjusted StringID

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 */

   240

static StringID MapGRFStringID(uint32 grfid, StringID str)

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{

   242

	/* 0xD0 and 0xDC stand for all the TextIDs in the range

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	 * of 0xD000 (misc graphics texts) and 0xDC00 (misc persistent texts).

   244

	 * These strings are unique to each grf file, and thus require to be used with the

   245

	 * grfid in which they are declared */

   246

	if (GB(str, 8, 8) == 0xD0 || GB(str, 8, 8) == 0xDC) {

   247

		return GetGRFStringID(grfid, str);

   248

	}

   249

   250

	/* We have some changes in our cargo strings, resulting in some missing. */

   251

	if (str >= 0x006E && str <= 0x008D) return str - 0x20;

   252

	if (str >= 0x008E && str <= 0x00AD) return str - 0x20;

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   254

	/* Map building names according to our lang file changes

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	 * 0x200F = Tall Office Block, first house name in the original data, the one that TTDPatch stil uses

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	 * 0x201F = Old houses is the last house name.

   257

	 * OpenTTD does not have exactly the same order aymore, so, the code below allows

   258

	 * to compensate for the difference */

   259

	if (str >= 0x200F && str <= 0x201F) return str + (STR_200F_TALL_OFFICE_BLOCK - 0x200F);

   260

   261

	return str;

   262

}

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   264

static uint8 MapDOSColour(uint8 colour)

   265

{

   266

	if (_use_dos_palette) return colour;

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   268

	if (colour < 10) {

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		static uint8 dos_to_win_colour_map[] = { 0, 215, 216, 136, 88, 106, 32, 33, 40, 245 };

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		return dos_to_win_colour_map[colour];

   271

	}

   272

   273

	if (colour >= 245 && colour < 254) return colour - 28;

   274

   275

	return colour;

   276

}

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   278

   279

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

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   281

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

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   283

static void dewagonize(int condition, int engine)

   284

{

   285

	EngineInfo *ei = &_engine_info[engine];

   286

	RailVehicleInfo *rvi = &_rail_vehicle_info[engine];

   287

   288

	if (condition != 0) {

   289

		ei->unk2 &= ~0x80;

   290

		if (rvi->railveh_type == RAILVEH_WAGON)

   291

			rvi->railveh_type = RAILVEH_SINGLEHEAD;

   292

	} else {

   293

		ei->unk2 |= 0x80;

   294

		rvi->railveh_type = RAILVEH_WAGON;

   295

	}

   296

}

   297

   298

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

   299

{

   300

	EngineInfo *ei = &_engine_info[engine];

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	RailVehicleInfo *rvi = &_rail_vehicle_info[engine];

   302

	byte *buf = *bufp;

   303

	int i;

   304

	bool ret = false;

   305

   306

	switch (prop) {

   307

		case 0x05: // Track type

   308

			FOR_EACH_OBJECT {

   309

				uint8 tracktype = grf_load_byte(&buf);

   310

   311

				switch (tracktype) {

   312

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

   313

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

   314

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

   315

					default:

   316

						grfmsg(1, "RailVehicleChangeInfo: Invalid track type %d specified, ignoring", tracktype);

   317

						break;

   318

				}

   319

			}

   320

			break;

   321

   322

		case 0x08: // AI passenger service

   323

			/* @todo missing feature */

   324

			FOR_EACH_OBJECT grf_load_byte(&buf);

   325

			ret = true;

   326

			break;

   327

   328

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

   329

			FOR_EACH_OBJECT {

   330

				uint16 speed = grf_load_word(&buf);

   331

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

   332

   333

				rvi[i].max_speed = speed;

   334

			}

   335

			break;

   336

   337

		case 0x0B: // Power

   338

			FOR_EACH_OBJECT {

   339

				uint16 power = grf_load_word(&buf);

   340

   341

				if (rvi[i].railveh_type == RAILVEH_MULTIHEAD) power /= 2;

   342

   343

				rvi[i].power = power;

   344

				dewagonize(power, engine + i);

   345

			}

   346

			break;

   347

   348

		case 0x0D: // Running cost factor

   349

			FOR_EACH_OBJECT {

   350

				uint8 runcostfact = grf_load_byte(&buf);

   351

   352

				if (rvi[i].railveh_type == RAILVEH_MULTIHEAD) runcostfact /= 2;

   353

   354

				rvi[i].running_cost_base = runcostfact;

   355

			}

   356

			break;

   357

   358

		case 0x0E: // Running cost base

   359

			FOR_EACH_OBJECT {

   360

				uint32 base = grf_load_dword(&buf);

   361

   362

				switch (base) {

   363

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

   364

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

   365

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

   366

					case 0: break; // Used by wagons

   367

					default:

   368

						grfmsg(1, "RailVehicleChangeInfo: Unsupported running cost base 0x%04X, ignoring", base);

   369

						break;

   370

				}

   371

			}

   372

			break;

   373

   374

		case 0x12: // Sprite ID

   375

			FOR_EACH_OBJECT {

   376

				uint8 spriteid = grf_load_byte(&buf);

   377

   378

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

   379

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

   380

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

   381

   382

				rvi[i].image_index = spriteid;

   383

			}

   384

			break;

   385

   386

		case 0x13: // Dual-headed

   387

			FOR_EACH_OBJECT {

   388

				uint8 dual = grf_load_byte(&buf);

   389

   390

				if (dual != 0) {

   391

					if (rvi[i].railveh_type != RAILVEH_MULTIHEAD) {

   392

						// adjust power and running cost if needed

   393

						rvi[i].power /= 2;

   394

						rvi[i].running_cost_base /= 2;

   395

					}

   396

					rvi[i].railveh_type = RAILVEH_MULTIHEAD;

   397

				} else {

   398

					if (rvi[i].railveh_type == RAILVEH_MULTIHEAD) {

   399

						// adjust power and running cost if needed

   400

						rvi[i].power *= 2;

   401

						rvi[i].running_cost_base *= 2;

   402

					}

   403

					rvi[i].railveh_type = rvi[i].power == 0 ?

   404

						RAILVEH_WAGON : RAILVEH_SINGLEHEAD;

   405

				}

   406

			}

   407

			break;

   408

   409

		case 0x14: // Cargo capacity

   410

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

   411

			break;

   412

   413

		case 0x15: // Cargo type

   414

			FOR_EACH_OBJECT {

   415

				uint8 ctype = grf_load_byte(&buf);

   416

   417

				if (ctype < NUM_CARGO && HASBIT(_cargo_mask, ctype)) {

   418

					rvi[i].cargo_type = ctype;

   419

				} else {

   420

					rvi[i].cargo_type = CT_INVALID;

   421

					grfmsg(2, "RailVehicleChangeInfo: Invalid cargo type %d, using first refittable", ctype);

   422

				}

   423

			}

   424

			break;

   425

   426

		case 0x16: // Weight

   427

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

   428

			break;

   429

   430

		case 0x17: // Cost factor

   431

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

   432

			break;

   433

   434

		case 0x18: // AI rank

   435

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

   436

			break;

   437

   438

		case 0x19: // Engine traction type

   439

			/* What do the individual numbers mean?

   440

			 * 0x00 .. 0x07: Steam

   441

			 * 0x08 .. 0x27: Diesel

   442

			 * 0x28 .. 0x31: Electric

   443

			 * 0x32 .. 0x37: Monorail

   444

			 * 0x38 .. 0x41: Maglev

   445

			 */

   446

			FOR_EACH_OBJECT {

   447

				uint8 traction = grf_load_byte(&buf);

   448

				int engclass;

   449

   450

				if (traction <= 0x07) {

   451

					engclass = 0;

   452

				} else if (traction <= 0x27) {

   453

					engclass = 1;

   454

				} else if (traction <= 0x31) {

   455

					engclass = 2;

   456

				} else if (traction <= 0x41) {

   457

					engclass = 2;

   458

				} else {

   459

					break;

   460

				}

   461

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

   462

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

   463

   464

				rvi[i].engclass = engclass;

   465

			}

   466

			break;

   467

   468

		case 0x1A: // Alter purchase list sort order

   469

			FOR_EACH_OBJECT {

   470

				EngineID pos = grf_load_byte(&buf);

   471

   472

				if (pos < NUM_TRAIN_ENGINES) {

   473

					AlterRailVehListOrder(engine + i, pos);

   474

				} else {

   475

					grfmsg(2, "RailVehicleChangeInfo: Invalid train engine ID %d, ignoring", pos);

   476

				}

   477

			}

   478

			break;

   479

   480

		case 0x1B: // Powered wagons power bonus

   481

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

   482

			break;

   483

   484

		case 0x1C: // Refit cost

   485

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

   486

			break;

   487

   488

		case 0x1D: // Refit cargo

   489

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

   490

			break;

   491

   492

		case 0x1E: // Callback