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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 "strings.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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#include "industry.h"

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#include "newgrf_canal.h"

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#include "newgrf_commons.h"

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#include "newgrf_townname.h"

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/* TTDPatch extended GRF format codec

    50

 * (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

    55

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

    56

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

    57

    58

    59

static int _skip_sprites; // XXX

    60

static uint _file_index; // XXX

    61

SpriteID _signal_base;

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SpriteID _coast_base;

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    64

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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    70

static GRFConfig *_cur_grfconfig;

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    72

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

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static byte _misc_grf_features = 0;

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    75

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

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static uint32 _ttdpatch_flags[8];

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    78

/* 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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    81

/* Indicates which are the newgrf features currently loaded ingame */

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GRFLoadedFeatures _loaded_newgrf_features;

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    84

enum GrfDataType {

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	GDT_SOUND,

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};

    87

    88

static byte _grf_data_blocks;

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static GrfDataType _grf_data_type;

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    91

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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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};

   107

   108

   109

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

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   111

static const uint _vehcounts[4] = {

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	/* GSF_TRAIN */    NUM_TRAIN_ENGINES,

   113

	/* GSF_ROAD */     NUM_ROAD_ENGINES,

   114

	/* GSF_SHIP */     NUM_SHIP_ENGINES,

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	/* GSF_AIRCRAFT */ NUM_AIRCRAFT_ENGINES

   116

};

   117

   118

static const uint _vehshifts[4] = {

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	/* GSF_TRAIN */    0,

   120

	/* GSF_ROAD */     ROAD_ENGINES_INDEX,

   121

	/* GSF_SHIP */     SHIP_ENGINES_INDEX,

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	/* GSF_AIRCRAFT */ AIRCRAFT_ENGINES_INDEX,

   123

};

   124

   125

enum {

   126

	MAX_STATIONS = 256,

   127

};

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   129

static uint16 cargo_allowed[TOTAL_NUM_ENGINES];

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static uint16 cargo_disallowed[TOTAL_NUM_ENGINES];

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   132

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

   133

static uint32 _grm_engines[TOTAL_NUM_ENGINES];

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   135

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

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static uint32 _grm_cargos[NUM_CARGO];

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   138

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

   139

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

   140

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

   141

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

   142

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

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 * is no file information available during that time.

   144

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

   145

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

   146

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

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{

   148

	char buf[1024];

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	va_list va;

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   151

	va_start(va, str);

   152

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

   153

	va_end(va);

   154

   155

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

   156

}

   157

   158

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

   159

{

   160

	if (real >= wanted) return true;

   161

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

   162

	return false;

   163

}

   164

   165

static inline byte grf_load_byte(byte **buf)

   166

{

   167

	return *(*buf)++;

   168

}

   169

   170

static uint16 grf_load_word(byte **buf)

   171

{

   172

	uint16 val = grf_load_byte(buf);

   173

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

   174

}

   175

   176

static uint16 grf_load_extended(byte** buf)

   177

{

   178

	uint16 val;

   179

	val = grf_load_byte(buf);

   180

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

   181

	return val;

   182

}

   183

   184

static uint32 grf_load_dword(byte **buf)

   185

{

   186

	uint32 val = grf_load_word(buf);

   187

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

   188

}

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   190

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

   191

{

   192

	switch (size) {

   193

		case 1: return grf_load_byte(buf);

   194

		case 2: return grf_load_word(buf);

   195

		case 4: return grf_load_dword(buf);

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		default:

   197

			NOT_REACHED();

   198

			return 0;

   199

	}

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}

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   202

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

   203

{

   204

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

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	size_t string_length = ttd_strnlen(string, max_len);

   206

   207

	if (string_length == max_len) {

   208

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

   209

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

   210

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

   211

	} else {

   212

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

   213

		string_length++;

   214

	}

   215

	*buf += string_length;

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   217

	return string;

   218

}

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   220

static GRFFile *GetFileByGRFID(uint32 grfid)

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{

   222

	GRFFile *file;

   223

   224

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

   225

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

   226

	}

   227

	return file;

   228

}

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   230

static GRFFile *GetFileByFilename(const char *filename)

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{

   232

	GRFFile *file;

   233

   234

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

   235

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

   236

	}

   237

	return file;

   238

}

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   240

   241

/** 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

   243

 * @param grfid Id of the grf file

   244

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

   245

 * @return the properly adjusted StringID

   246

 */

   247

static StringID MapGRFStringID(uint32 grfid, StringID str)

   248

{

   249

	/* 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).

   251

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

   252

	 * grfid in which they are declared */

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

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		return GetGRFStringID(grfid, str);

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	}

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   257

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

   258

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

   259

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

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   261

	/* 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.

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

   265

	 * to compensate for the difference */

   266

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

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   268

	return str;

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}

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   271

static uint8 MapDOSColour(uint8 colour)

   272

{

   273

	if (_use_dos_palette) return colour;

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   275

	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];

   278

	}

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   280

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

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   282

	return colour;

   283

}

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   285

   286

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

   287

   288

static void dewagonize(int condition, int engine)

   289

{

   290

	EngineInfo *ei = &_engine_info[engine];

   291

	RailVehicleInfo *rvi = &_rail_vehicle_info[engine];

   292

   293

	if (condition != 0) {

   294

		ei->unk2 &= ~0x80;

   295

		if (rvi->railveh_type == RAILVEH_WAGON)

   296

			rvi->railveh_type = RAILVEH_SINGLEHEAD;

   297

	} else {

   298

		ei->unk2 |= 0x80;

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		rvi->railveh_type = RAILVEH_WAGON;

   300

	}

   301

}

   302

   303

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

   304

{

   305

	byte *buf = *bufp;

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	bool ret = false;

   307

   308

	for (int i = 0; i < numinfo; i++) {

   309

		EngineInfo *ei       = &_engine_info[engine + i];

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		RailVehicleInfo *rvi = &_rail_vehicle_info[engine + i];

   311

   312

		switch (prop) {

   313

			case 0x05: { // Track type

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				uint8 tracktype = grf_load_byte(&buf);

   315

   316

				switch (tracktype) {

   317

					case 0: rvi->railtype = rvi->engclass >= 2 ? RAILTYPE_ELECTRIC : RAILTYPE_RAIL; break;

   318

					case 1: rvi->railtype = RAILTYPE_MONO; break;

   319

					case 2: rvi->railtype = RAILTYPE_MAGLEV; break;

   320

					default:

   321

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

   322

						break;

   323

				}

   324

			} break;

   325

   326

			case 0x08: // AI passenger service

   327

				/** @todo Tells the AI that this engine is designed for

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				 * passenger services and shouldn't be used for freight. */

   329

				grf_load_byte(&buf);

   330

				ret = true;

   331

				break;

   332

   333

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

   334

				uint16 speed = grf_load_word(&buf);

   335

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

   336

   337

				rvi->max_speed = speed;

   338

			} break;

   339

   340

			case 0x0B: { // Power

   341

				uint16 power = grf_load_word(&buf);

   342

   343

				if (rvi->railveh_type == RAILVEH_MULTIHEAD) power /= 2;

   344

   345

				rvi->power = power;

   346

				dewagonize(power, engine + i);

   347

			} break;

   348

   349

			case 0x0D: { // Running cost factor

   350

				uint8 runcostfact = grf_load_byte(&buf);

   351

   352

				if (rvi->railveh_type == RAILVEH_MULTIHEAD) runcostfact /= 2;

   353

   354

				rvi->running_cost_base = runcostfact;

   355

			} break;

   356

   357

			case 0x0E: { // Running cost base

   358

				uint32 base = grf_load_dword(&buf);

   359

   360

				switch (base) {

   361

					case 0x4C30: rvi->running_cost_class = 0; break;

   362

					case 0x4C36: rvi->running_cost_class = 1; break;

   363

					case 0x4C3C: rvi->running_cost_class = 2; break;

   364

					case 0: break; // Used by wagons

   365

					default:

   366

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

   367

						break;

   368

				}

   369

			} break;

   370

   371

			case 0x12: { // Sprite ID

   372

				uint8 spriteid = grf_load_byte(&buf);

   373

   374

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

   375

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

   376

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

   377

   378

				rvi->image_index = spriteid;

   379

			} break;

   380

   381

			case 0x13: { // Dual-headed

   382

				uint8 dual = grf_load_byte(&buf);

   383

   384

				if (dual != 0) {

   385

					if (rvi->railveh_type != RAILVEH_MULTIHEAD) {

   386

						// adjust power and running cost if needed

   387

						rvi->power /= 2;

   388

						rvi->running_cost_base /= 2;

   389

					}

   390

					rvi->railveh_type = RAILVEH_MULTIHEAD;

   391

				} else {

   392

					if (rvi->railveh_type == RAILVEH_MULTIHEAD) {

   393

						// adjust power and running cost if needed

   394

						rvi->power *= 2;

   395

						rvi->running_cost_base *= 2;

   396

					}

   397

					rvi->railveh_type = rvi->power == 0 ?

   398

						RAILVEH_WAGON : RAILVEH_SINGLEHEAD;

   399

				}

   400

			} break;

   401

   402

			case 0x14: // Cargo capacity

   403

				rvi->capacity = grf_load_byte(&buf);

   404

				break;

   405

   406

			case 0x15: { // Cargo type

   407

				uint8 ctype = grf_load_byte(&buf);

   408

   409

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

   410

					rvi->cargo_type = ctype;

   411

				} else {

   412

					rvi->cargo_type = CT_INVALID;

   413

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

   414

				}

   415

			} break;

   416

   417

			case 0x16: // Weight

   418

				SB(rvi->weight, 0, 8, grf_load_byte(&buf));

   419

				break;

   420

   421

			case 0x17: // Cost factor

   422

				rvi->base_cost = grf_load_byte(&buf);

   423

				break;

   424

   425

			case 0x18: // AI rank

   426

				rvi->ai_rank = grf_load_byte(&buf);

   427

				break;

   428

   429

			case 0x19: { // Engine traction type

   430

				/* What do the individual numbers mean?

   431

				 * 0x00 .. 0x07: Steam

   432

				 * 0x08 .. 0x27: Diesel

   433

				 * 0x28 .. 0x31: Electric

   434

				 * 0x32 .. 0x37: Monorail

   435

				 * 0x38 .. 0x41: Maglev

   436

				 */

   437

				uint8 traction = grf_load_byte(&buf);

   438

				EngineClass engclass;

   439

   440

				if (traction <= 0x07) {

   441

					engclass = EC_STEAM;

   442

				} else if (traction <= 0x27) {

   443

					engclass = EC_DIESEL;

   444

				} else if (traction <= 0x31) {

   445

					engclass = EC_ELECTRIC;

   446

				} else if (traction <= 0x37) {

   447

					engclass = EC_MONORAIL;

   448

				} else if (traction <= 0x41) {

   449

					engclass = EC_MAGLEV;

   450

				} else {

   451

					break;

   452

				}

   453

				if (rvi->railtype == RAILTYPE_RAIL     && engclass >= EC_ELECTRIC) rvi->railtype = RAILTYPE_ELECTRIC;

   454

				if (rvi->railtype == RAILTYPE_ELECTRIC && engclass  < EC_ELECTRIC) rvi->railtype = RAILTYPE_RAIL;

   455

   456

				rvi->engclass = engclass;

   457

			} break;

   458

   459

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

   460

				EngineID pos = grf_load_byte(&buf);

   461

   462

				if (pos < NUM_TRAIN_ENGINES) {

   463

					AlterRailVehListOrder(engine + i, pos);

   464

				} else {

   465

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

   466

				}

   467

			} break;

   468

   469

			case 0x1B: // Powered wagons power bonus

   470

				rvi->pow_wag_power = grf_load_word(&buf);

   471

				break;

   472

   473

			case 0x1C: // Refit cost

   474

				ei->refit_cost = grf_load_byte(&buf);

   475

				break;

   476

   477

			case 0x1D: // Refit cargo

   478

				ei->refit_mask = grf_load_dword(&buf);

   479

				break;

   480

   481

			case 0x1E: // Callback

   482

				ei->callbackmask = grf_load_byte(&buf);

   483

				break;

   484

   485

			case 0x1F: // Tractive effort coefficient

   486

				rvi->tractive_effort = grf_load_byte(&buf);

   487

				break;