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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 "bridge.h"

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#include "economy.h"

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#include "newgrf_engine.h"

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    22

/* 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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    31

    32

uint16 _custom_sprites_base;

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static int _skip_sprites; // XXX

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static uint _file_index; // XXX

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

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static uint32 _ttdpatch_flags[8];

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    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;

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    59

    60

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

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    62

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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    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

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 * 4

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 * 5

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 * 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

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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,

   100

} grfmsg_severity;

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   102

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

   103

{

   104

	static const char* const severitystr[] = {

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		"Notice",

   106

		"Warning",

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		"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)!", \

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		       where, real, wanted); \

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		return; \

   129

	} \

   130

} while (0)

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   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;

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	val = p[0];

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	val |= p[1] << 8;

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	*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);

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	return val;

   154

}

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   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;

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	val |= p[2] << 16;

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	val |= p[3] << 24;

   164

	*buf = p + 4;

   165

	return val;

   166

}

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   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

}

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   189

   190

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

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   192

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

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   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) {

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		ei->unk2 &= ~0x80;

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		rvi->flags &= ~2;

   202

	} else {

   203

		ei->unk2 |= 0x80;

   204

		rvi->flags |= 2;

   205

	}

   206

}

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   208

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

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{

   210

	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;

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   216

	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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   221

				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);

   227

						break;

   228

				}

   229

			}

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			break;

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   232

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

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			/* TODO */

   234

			FOR_EACH_OBJECT {

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				grf_load_byte(&buf);

   236

			}

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			ret = true;

   238

		} break;

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		case 0x09: { /* Speed */

   240

			FOR_EACH_OBJECT {

   241

				uint16 speed = grf_load_word(&buf);

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				if (speed == 0xFFFF)

   243

					speed = 0;

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   245

				rvi[i].max_speed = speed;

   246

			}

   247

		} break;

   248

		case 0x0B: { /* Power */

   249

			FOR_EACH_OBJECT {

   250

				uint16 power = grf_load_word(&buf);

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   252

				if (rvi[i].flags & RVI_MULTIHEAD)

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					power /= 2;

   254

   255

				rvi[i].power = power;

   256

				dewagonize(power, engine + i);

   257

			}

   258

		} break;

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

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			FOR_EACH_OBJECT {

   261

				uint8 runcostfact = grf_load_byte(&buf);

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   263

				if (rvi[i].flags & RVI_MULTIHEAD)

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					runcostfact /= 2;

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   266

				rvi[i].running_cost_base = runcostfact;

   267

			}

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		} break;

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

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			FOR_EACH_OBJECT {

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				uint32 base = grf_load_dword(&buf);

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   273

				switch (base) {

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					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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			}

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		} break;

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		case 0x12: { /* Sprite ID */

   281

			FOR_EACH_OBJECT {

   282

				uint8 spriteid = grf_load_byte(&buf);

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   284

				/* 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. */

   286

				if (spriteid < 0xFD)

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					spriteid >>= 1;

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   289

				rvi[i].image_index = spriteid;

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			}

   291

		} break;

   292

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

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			FOR_EACH_OBJECT {

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				uint8 dual = grf_load_byte(&buf);

   295

   296

				if (dual != 0) {

   297

					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;

   303

				} else {

   304

					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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				}

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			}

   312

		} break;

   313

		case 0x14: { /* Cargo capacity */

   314

			FOR_EACH_OBJECT {

   315

				uint8 capacity = grf_load_byte(&buf);

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   317

				rvi[i].capacity = capacity;

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			}

   319

		} break;

   320

		case 0x15: { /* Cargo type */

   321

			FOR_EACH_OBJECT {

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				uint8 ctype = grf_load_byte(&buf);

   323

   324

				if (ctype < NUM_CARGO) {

   325

					rvi[i].cargo_type = ctype;

   326

				} else {

   327

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

   328

				}

   329

			}

   330

		} break;

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		case 0x16: { /* Weight */

   332

			FOR_EACH_OBJECT {

   333

				uint8 weight = grf_load_byte(&buf);

   334

   335

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

   336

			}

   337

		} break;

   338

		case 0x17: { /* Cost factor */

   339

			FOR_EACH_OBJECT {

   340

				uint8 cfactor = grf_load_byte(&buf);

   341

   342

				rvi[i].base_cost = cfactor;

   343

			}

   344

		} break;

   345

   346

		case 0x18: // AI rank

   347

			FOR_EACH_OBJECT {

   348

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

   349

			}

   350

			break;

   351

   352

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

   353

			/* What do the individual numbers mean?

   354

			 * 0x00 .. 0x07: Steam

   355

			 * 0x08 .. 0x27: Diesel

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			 * 0x28 .. 0x31: Electric

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			 * 0x32 .. 0x37: Monorail

   358

			 * 0x38 .. 0x41: Maglev

   359

			 */

   360

			FOR_EACH_OBJECT {

   361

				uint8 traction = grf_load_byte(&buf);

   362

				int engclass;

   363

   364

				if (traction <= 0x07)

   365

					engclass = 0;

   366

				else if (traction <= 0x27)

   367

					engclass = 1;

   368

				else if (traction <= 0x41)

   369

					engclass = 2;

   370

				else

   371

					break;

   372

   373

				rvi[i].engclass = engclass;

   374

			}

   375

		} break;

   376

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

   377

			FOR_EACH_OBJECT {

   378

				EngineID pos = grf_load_byte(&buf);

   379

   380

				if (pos < NUM_TRAIN_ENGINES) {

   381

					AlterRailVehListOrder(engine + i, pos);

   382

				} else {

   383

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

   384

				}

   385

			}

   386

			break;

   387

   388

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

   389

			FOR_EACH_OBJECT {

   390

				uint16 wag_power = grf_load_word(&buf);

   391

   392

				rvi[i].pow_wag_power = wag_power;

   393

			}

   394

		} break;

   395

		case 0x1D: { /* Refit cargo */

   396

			FOR_EACH_OBJECT {

   397

				uint32 refit_mask = grf_load_dword(&buf);

   398

   399

				_engine_info[engine + i].refit_mask = refit_mask;

   400

			}

   401

		} break;

   402

		case 0x1E: { /* Callback */

   403

			FOR_EACH_OBJECT {

   404

				byte callbacks = grf_load_byte(&buf);

   405

   406

				rvi[i].callbackmask = callbacks;

   407

			}

   408

		} break;

   409

		case 0x21: { /* Shorter vehicle */

   410

			FOR_EACH_OBJECT {

   411

				byte shorten_factor = grf_load_byte(&buf);

   412

   413

				rvi[i].shorten_factor = shorten_factor;

   414

			}

   415

		} break;

   416

		case 0x22: { /* Visual effect */

   417

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

   418

			FOR_EACH_OBJECT {

   419

				byte visual = grf_load_byte(&buf);

   420

   421

				rvi[i].visual_effect = visual;

   422

			}

   423

		} break;

   424

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

   425

			FOR_EACH_OBJECT {

   426

				byte wag_weight = grf_load_byte(&buf);

   427

   428

				rvi[i].pow_wag_weight = wag_weight;

   429

			}

   430

		} break;

   431

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

   432

			FOR_EACH_OBJECT {

   433

				byte weight = grf_load_byte(&buf);

   434

   435

				if (weight > 4) {

   436

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

   437

				} else {

   438

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

   439

				}

   440

			}

   441

		} break;

   442

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

   443

			FOR_EACH_OBJECT {

   444

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

   445

			}

   446

		} break;

   447

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

   448

			FOR_EACH_OBJECT {

   449

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

   450

			}

   451

		} break;

   452

		/* TODO */

   453

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

   454

		case 0x1C:	/* Refit cost */

   455

		case 0x1F:	/* Tractive effort */

   456

		case 0x20:	/* Air drag */

   457

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

   458

		case 0x26:	/* Retire vehicle early */

   459

		case 0x27:	/* Miscellaneous flags */

   460

			{

   461

			/* TODO */

   462

			FOR_EACH_OBJECT {

   463

				grf_load_byte(&buf);

   464

			}

   465

			ret = true;

   466

		}	break;

   467

		default:

   468

			ret = true;

   469

	}

   470

	*bufp = buf;

   471

	return ret;

   472

}

   473

   474

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

   475

{

   476

	RoadVehicleInfo *rvi = &_road_vehicle_info[engine];

   477

	byte *buf = *bufp;

   478

	int i;

   479

	bool ret = false;

   480

   481

	switch (prop) {

   482

		case 0x08: { /* Speed */

   483

			FOR_EACH_OBJECT {

   484

				uint8 speed = grf_load_byte(&buf);

   485

   486

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

   487

			}

   488

		} break;

   489

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

   490

			FOR_EACH_OBJECT {

   491

				uint8 runcost = grf_load_byte(&buf);

   492

   493

				rvi[i].running_cost = runcost;