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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 "newgrf_spritegroup.h"

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/* 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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static int _skip_sprites; // XXX

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static uint _file_index; // XXX

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SpriteID _signal_base = 0;

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    43

static GRFFile *_cur_grffile;

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GRFFile *_first_grffile;

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GRFConfig *_first_grfconfig;

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static SpriteID _cur_spriteid;

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static int _cur_stage;

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static uint32 _nfo_line;

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    50

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

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static byte _misc_grf_features = 0;

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

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static uint32 _ttdpatch_flags[8];

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/* 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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    59

    60

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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    76

    77

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

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    79

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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};

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    86

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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    93

enum {

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	MAX_STATIONS = 256,

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};

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    97

static uint16 cargo_allowed[TOTAL_NUM_ENGINES];

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static uint16 cargo_disallowed[TOTAL_NUM_ENGINES];

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/* Debugging messages policy:

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 *

   102

 * 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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 *

   105

 * 0..2 - dedicated to grfmsg()

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 * 3

   107

 * 4

   108

 * 5

   109

 * 6 - action handler entry reporting - one per action

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

   111

 * 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

   113

 */

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   115

   116

typedef enum grfmsg_severity {

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	GMS_NOTICE,

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	GMS_WARN,

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	GMS_ERROR,

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	GMS_FATAL,

   121

} grfmsg_severity;

   122

   123

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

   124

{

   125

	static const char* const severitystr[] = {

   126

		"Notice",

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		"Warning",

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		"Error",

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		"Fatal"

   130

	};

   131

	int export_severity = 0;

   132

	char buf[1024];

   133

	va_list va;

   134

   135

	va_start(va, str);

   136

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

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	va_end(va);

   138

   139

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

   140

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

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}

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   143

   144

#define check_length(real, wanted, where) \

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do { \

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	if (real < wanted) { \

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

   148

		       where, real, wanted); \

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		return; \

   150

	} \

   151

} while (0)

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   154

static inline byte grf_load_byte(byte **buf)

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{

   156

	return *(*buf)++;

   157

}

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   159

static uint16 grf_load_word(byte **buf)

   160

{

   161

	uint16 val = grf_load_byte(buf);

   162

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

   163

}

   164

   165

static uint16 grf_load_extended(byte** buf)

   166

{

   167

	uint16 val;

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	val = grf_load_byte(buf);

   169

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

   170

	return val;

   171

}

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   173

static uint32 grf_load_dword(byte **buf)

   174

{

   175

	uint32 val = grf_load_word(buf);

   176

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

   177

}

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   179

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

   180

{

   181

	switch (size) {

   182

		case 1: return grf_load_byte(buf);

   183

		case 2: return grf_load_word(buf);

   184

		case 4: return grf_load_dword(buf);

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		default:

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			NOT_REACHED();

   187

			return 0;

   188

	}

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}

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   191

static GRFFile *GetFileByGRFID(uint32 grfid)

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{

   193

	GRFFile *file;

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   195

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

   196

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

   197

	}

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	return file;

   199

}

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   201

static GRFFile *GetFileByFilename(const char *filename)

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{

   203

	GRFFile *file;

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   205

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

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

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	}

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	return file;

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}

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   212

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

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   214

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

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   216

static void dewagonize(int condition, int engine)

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{

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	EngineInfo *ei = &_engine_info[engine];

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	RailVehicleInfo *rvi = &_rail_vehicle_info[engine];

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   221

	if (condition != 0) {

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		ei->unk2 &= ~0x80;

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		rvi->flags &= ~2;

   224

	} else {

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		ei->unk2 |= 0x80;

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		rvi->flags |= 2;

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	}

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}

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   230

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

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{

   232

	EngineInfo *ei = &_engine_info[engine];

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	RailVehicleInfo *rvi = &_rail_vehicle_info[engine];

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	byte *buf = *bufp;

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	int i;

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	bool ret = false;

   237

   238

	switch (prop) {

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		case 0x05: /* Track type */

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			FOR_EACH_OBJECT {

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				uint8 tracktype = grf_load_byte(&buf);

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   243

				switch (tracktype) {

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

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					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:

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

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						break;

   250

				}

   251

			}

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			break;

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   254

		case 0x08: /* AI passenger service */

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			/* TODO */

   256

			FOR_EACH_OBJECT grf_load_byte(&buf);

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			ret = true;

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			break;

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   260

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

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			FOR_EACH_OBJECT {

   262

				uint16 speed = grf_load_word(&buf);

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

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   265

				rvi[i].max_speed = speed;

   266

			}

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			break;

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   269

		case 0x0B: /* Power */

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			FOR_EACH_OBJECT {

   271

				uint16 power = grf_load_word(&buf);

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   273

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

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   275

				rvi[i].power = power;

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				dewagonize(power, engine + i);

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			}

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			break;

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   280

		case 0x0D: /* Running cost factor */

   281

			FOR_EACH_OBJECT {

   282

				uint8 runcostfact = grf_load_byte(&buf);

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   284

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

   285

   286

				rvi[i].running_cost_base = runcostfact;

   287

			}

   288

			break;

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   290

		case 0x0E: /* Running cost base */

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			FOR_EACH_OBJECT {

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				uint32 base = grf_load_dword(&buf);

   293

   294

				switch (base) {

   295

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

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

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

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				}

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			}

   300

			break;

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   302

		case 0x12: /* Sprite ID */

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			FOR_EACH_OBJECT {

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				uint8 spriteid = grf_load_byte(&buf);

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   306

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

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

   308

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

   309

   310

				rvi[i].image_index = spriteid;

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			}

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			break;

   313

   314

		case 0x13: /* Dual-headed */

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			FOR_EACH_OBJECT {

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				uint8 dual = grf_load_byte(&buf);

   317

   318

				if (dual != 0) {

   319

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

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						// adjust power and running cost if needed

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						rvi[i].power /= 2;

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						rvi[i].running_cost_base /= 2;

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					}

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					rvi[i].flags |= RVI_MULTIHEAD;

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				} else {

   326

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

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						// adjust power and running cost if needed

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						rvi[i].power *= 2;

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						rvi[i].running_cost_base *= 2;

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					}

   331

					rvi[i].flags &= ~RVI_MULTIHEAD;

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				}

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			}

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			break;

   335

   336

		case 0x14: /* Cargo capacity */

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

   338

			break;

   339

   340

		case 0x15: /* Cargo type */

   341

			FOR_EACH_OBJECT {

   342

				uint8 ctype = grf_load_byte(&buf);

   343

   344

				if (ctype < NUM_CARGO) {

   345

					rvi[i].cargo_type = ctype;

   346

				} else {

   347

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

   348

				}

   349

			}

   350

			break;

   351

   352

		case 0x16: /* Weight */

   353

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

   354

			break;

   355

   356

		case 0x17: /* Cost factor */

   357

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

   358

			break;

   359

   360

		case 0x18: /* AI rank */

   361

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

   362

			break;

   363

   364

		case 0x19: /* Engine traction type */

   365

			/* What do the individual numbers mean?

   366

			 * 0x00 .. 0x07: Steam

   367

			 * 0x08 .. 0x27: Diesel

   368

			 * 0x28 .. 0x31: Electric

   369

			 * 0x32 .. 0x37: Monorail

   370

			 * 0x38 .. 0x41: Maglev

   371

			 */

   372

			FOR_EACH_OBJECT {

   373

				uint8 traction = grf_load_byte(&buf);

   374

				int engclass;

   375

   376

				if (traction <= 0x07) {

   377

					engclass = 0;

   378

				} else if (traction <= 0x27) {

   379

					engclass = 1;

   380

				} else if (traction <= 0x31) {

   381

					engclass = 2;

   382

					ei[i].railtype = RAILTYPE_ELECTRIC;

   383

				} else if (traction <= 0x41) {

   384

					engclass = 2;

   385

				} else {

   386

					break;

   387

				}

   388

   389

				rvi[i].engclass = engclass;

   390

			}

   391

			break;

   392

   393

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

   394

			FOR_EACH_OBJECT {

   395

				EngineID pos = grf_load_byte(&buf);

   396

   397

				if (pos < NUM_TRAIN_ENGINES) {

   398

					AlterRailVehListOrder(engine + i, pos);

   399

				} else {

   400

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

   401

				}

   402

			}

   403

			break;

   404

   405

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

   406

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

   407

			break;

   408

   409

		case 0x1D: /* Refit cargo */

   410

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

   411

			break;

   412

   413

		case 0x1E: /* Callback */

   414

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

   415

			break;

   416

   417

		case 0x21: /* Shorter vehicle */

   418

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

   419

			break;

   420

   421

		case 0x22: /* Visual effect */

   422

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

   423

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

   424

			break;

   425

   426

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

   427

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

   428

			break;

   429

   430

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

   431

			FOR_EACH_OBJECT {

   432

				byte weight = grf_load_byte(&buf);

   433

   434

				if (weight > 4) {

   435

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

   436

				} else {

   437

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

   438

				}

   439

			}

   440

			break;

   441

   442

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

   443

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

   444

			break;

   445

   446

		case 0x27: /* Miscellaneous flags */

   447

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

   448

			break;

   449

   450

		case 0x28: /* Cargo classes allowed */

   451

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

   452

			break;

   453

   454

		case 0x29: /* Cargo classes disallowed */

   455

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

   456

			break;

   457

   458

		/* TODO */

   459

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

   460

		case 0x1C: /* Refit cost */

   461

		case 0x1F: /* Tractive effort */

   462

		case 0x20: /* Air drag */

   463

		case 0x26: /* Retire vehicle early */

   464

			/* TODO */

   465

			FOR_EACH_OBJECT grf_load_byte(&buf);

   466

			ret = true;

   467

			break;

   468

   469

		default:

   470

			ret = true;

   471

			break;

   472

	}

   473

	*bufp = buf;

   474

	return ret;

   475

}

   476

   477

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

   478

{

   479

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

   480

	RoadVehicleInfo *rvi = &_road_vehicle_info[engine];

   481

	byte *buf = *bufp;

   482

	int i;

   483

	bool ret = false;

   484

   485

	switch (prop) {

   486

		case 0x08: /* Speed (1 unit is 0.5 kmh) */

   487

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

   488

			break;

   489

   490

		case 0x09: /* Running cost factor */