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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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    21

/* TTDPatch extended GRF format codec

    22

 * (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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    30

    31

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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    36

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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    41

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

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static uint32 _ttdpatch_flags[8];

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    44

    45

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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} grfspec_feature;

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    57

    58

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

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    60

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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    67

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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    74

static uint16 cargo_allowed[TOTAL_NUM_ENGINES];

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static uint16 cargo_disallowed[TOTAL_NUM_ENGINES];

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    77

/* Debugging messages policy:

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 *

    79

 * 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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 *

    82

 * 0..2 - dedicated to grfmsg()

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 * 3

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 * 4

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 * 5

    86

 * 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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    92

    93

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,

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} grfmsg_severity;

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   100

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

   101

{

   102

	static const char* const severitystr[] = {

   103

		"Notice",

   104

		"Warning",

   105

		"Error",

   106

		"Fatal"

   107

	};

   108

	int export_severity = 0;

   109

	char buf[1024];

   110

	va_list va;

   111

   112

	va_start(va, str);

   113

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

   114

	va_end(va);

   115

   116

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

   117

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

   118

}

   119

   120

   121

#define check_length(real, wanted, where) \

   122

do { \

   123

	if (real < wanted) { \

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

   125

		       where, _cur_spriteid - _cur_grffile->sprite_offset, real, wanted); \

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		return; \

   127

	} \

   128

} while (0)

   129

   130

   131

static inline byte grf_load_byte(byte **buf)

   132

{

   133

	return *(*buf)++;

   134

}

   135

   136

static uint16 grf_load_word(byte **buf)

   137

{

   138

	uint16 val;

   139

	byte *p = *buf;

   140

	val = p[0];

   141

	val |= p[1] << 8;

   142

	*buf = p + 2;

   143

	return val;

   144

}

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   146

static uint16 grf_load_extended(byte** buf)

   147

{

   148

	uint16 val;

   149

	val = grf_load_byte(buf);

   150

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

   151

	return val;

   152

}

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   154

static uint32 grf_load_dword(byte **buf)

   155

{

   156

	uint32 val;

   157

	byte *p = *buf;

   158

	val = p[0];

   159

	val |= p[1] << 8;

   160

	val |= p[2] << 16;

   161

	val |= p[3] << 24;

   162

	*buf = p + 4;

   163

	return val;

   164

}

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   166

   167

static GRFFile *GetFileByGRFID(uint32 grfid)

   168

{

   169

	GRFFile *file;

   170

   171

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

   172

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

   173

	}

   174

	return file;

   175

}

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   177

static GRFFile *GetFileByFilename(const char *filename)

   178

{

   179

	GRFFile *file;

   180

   181

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

   182

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

   183

	}

   184

	return file;

   185

}

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   187

   188

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

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   190

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

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   192

static void dewagonize(int condition, int engine)

   193

{

   194

	EngineInfo *ei = &_engine_info[engine];

   195

	RailVehicleInfo *rvi = &_rail_vehicle_info[engine];

   196

   197

	if (condition != 0) {

   198

		ei->unk2 &= ~0x80;

   199

		rvi->flags &= ~2;

   200

	} else {

   201

		ei->unk2 |= 0x80;

   202

		rvi->flags |= 2;

   203

	}

   204

}

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   206

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

   207

{

   208

	EngineInfo *ei = &_engine_info[engine];

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	RailVehicleInfo *rvi = &_rail_vehicle_info[engine];

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	byte *buf = *bufp;

   211

	int i;

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	bool ret = false;

   213

   214

	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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   219

				ei[i].railtype = tracktype;

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			}

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		} break;

   222

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

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			/* TODO */

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			FOR_EACH_OBJECT {

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				grf_load_byte(&buf);

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			}

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			ret = true;

   228

		} break;

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		case 0x09: { /* Speed */

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			FOR_EACH_OBJECT {

   231

				uint16 speed = grf_load_word(&buf);

   232

				if (speed == 0xFFFF)

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					speed = 0;

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   235

				rvi[i].max_speed = speed;

   236

			}

   237

		} break;

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		case 0x0B: { /* Power */

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			FOR_EACH_OBJECT {

   240

				uint16 power = grf_load_word(&buf);

   241

   242

				if (rvi[i].flags & RVI_MULTIHEAD)

   243

					power /= 2;

   244

   245

				rvi[i].power = power;

   246

				dewagonize(power, engine + i);

   247

			}

   248

		} break;

   249

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

   250

			FOR_EACH_OBJECT {

   251

				uint8 runcostfact = grf_load_byte(&buf);

   252

   253

				if (rvi[i].flags & RVI_MULTIHEAD)

   254

					runcostfact /= 2;

   255

   256

				rvi[i].running_cost_base = runcostfact;

   257

				dewagonize(runcostfact, engine + i);

   258

			}

   259

		} break;

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

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			FOR_EACH_OBJECT {

   262

				uint32 base = grf_load_dword(&buf);

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   264

				switch (base) {

   265

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

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

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

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				}

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				dewagonize(base, engine + i);

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			}

   271

		} break;

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		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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   276

				rvi[i].image_index = spriteid;

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			}

   278

		} break;

   279

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

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			FOR_EACH_OBJECT {

   281

				uint8 dual = grf_load_byte(&buf);

   282

   283

				if (dual != 0) {

   284

					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;

   288

					}

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					rvi[i].flags |= RVI_MULTIHEAD;

   290

				} else {

   291

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

   292

						// adjust power and running cost if needed

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						rvi[i].power *= 2;

   294

						rvi[i].running_cost_base /= 2;

   295

					}

   296

					rvi[i].flags &= ~RVI_MULTIHEAD;

   297

				}

   298

			}

   299

		} break;

   300

		case 0x14: { /* Cargo capacity */

   301

			FOR_EACH_OBJECT {

   302

				uint8 capacity = grf_load_byte(&buf);

   303

   304

				rvi[i].capacity = capacity;

   305

			}

   306

		} break;

   307

		case 0x15: { /* Cargo type */

   308

			FOR_EACH_OBJECT {

   309

				uint8 ctype = grf_load_byte(&buf);

   310

   311

				rvi[i].cargo_type = ctype;

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			}

   313

		} break;

   314

		case 0x16: { /* Weight */

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			FOR_EACH_OBJECT {

   316

				uint8 weight = grf_load_byte(&buf);

   317

   318

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

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			}

   320

		} break;

   321

		case 0x17: { /* Cost factor */

   322

			FOR_EACH_OBJECT {

   323

				uint8 cfactor = grf_load_byte(&buf);

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   325

				rvi[i].base_cost = cfactor;

   326

			}

   327

		} break;

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		case 0x18: { /* AI rank */

   329

			/* TODO: _railveh_score should be merged to _rail_vehicle_info. */

   330

			FOR_EACH_OBJECT {

   331

				grf_load_byte(&buf);

   332

			}

   333

			ret = true;

   334

		} break;

   335

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

   343

			FOR_EACH_OBJECT {

   344

				uint8 traction = grf_load_byte(&buf);

   345

				int engclass;

   346

   347

				if (traction <= 0x07)

   348

					engclass = 0;

   349

				else if (traction <= 0x27)

   350

					engclass = 1;

   352

					engclass = 2;

   353

				else

   354

					break;

   355

   356

				rvi[i].engclass = engclass;

   357

			}

   358

		} break;

   359

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

   360

			FOR_EACH_OBJECT {

   361

				uint16 wag_power = grf_load_word(&buf);

   362

   363

				rvi[i].pow_wag_power = wag_power;

   364

			}

   365

		} break;

   366

		case 0x1D: { /* Refit cargo */

   367

			FOR_EACH_OBJECT {

   368

				uint32 refit_mask = grf_load_dword(&buf);

   369

   370

				_engine_info[engine + i].refit_mask = refit_mask;

   371

			}

   372

		} break;

   373

		case 0x1E: { /* Callback */

   374

			FOR_EACH_OBJECT {

   375

				byte callbacks = grf_load_byte(&buf);

   376

   377

				rvi[i].callbackmask = callbacks;

   378

			}

   379

		} break;

   380

		case 0x21: { /* Shorter vehicle */

   381

			FOR_EACH_OBJECT {

   382

				byte shorten_factor = grf_load_byte(&buf);

   383

   384

				rvi[i].shorten_factor = shorten_factor;

   385

			}

   386

		} break;

   387

		case 0x22: { /* Visual effect */

   388

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

   389

			FOR_EACH_OBJECT {

   390

				byte visual = grf_load_byte(&buf);

   391

   392

				rvi[i].visual_effect = visual;

   393

			}

   394

		} break;

   395

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

   396

			FOR_EACH_OBJECT {

   397

				byte wag_weight = grf_load_byte(&buf);

   398

   399

				rvi[i].pow_wag_weight = wag_weight;

   400

			}

   401

		} break;

   402

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

   403

			FOR_EACH_OBJECT {

   404

				byte weight = grf_load_byte(&buf);

   405

   406

				if (weight > 4) {

   407

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

   408

				} else {

   409

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

   410

				}

   411

			}

   412

		} break;

   413

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

   414

			FOR_EACH_OBJECT {

   415

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

   416

			}

   417

		} break;

   418

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

   419

			FOR_EACH_OBJECT {

   420

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

   421

			}

   422

		} break;

   423

		/* TODO */

   424

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

   425

		case 0x1A:	/* Sort order */

   426

		case 0x1C:	/* Refit cost */

   427

		case 0x1F:	/* Tractive effort */

   428

		case 0x20:	/* Air drag */

   429

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

   430

		case 0x26:	/* Retire vehicle early */

   431

			{

   432

			/* TODO */

   433

			FOR_EACH_OBJECT {

   434

				grf_load_byte(&buf);

   435

			}

   436

			ret = true;

   437

		}	break;

   438

		default:

   439

			ret = true;

   440

	}

   441

	*bufp = buf;

   442

	return ret;

   443

}

   444

   445

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

   446

{

   447

	RoadVehicleInfo *rvi = &_road_vehicle_info[engine];

   448

	byte *buf = *bufp;

   449

	int i;

   450

	bool ret = false;

   451

   452

	switch (prop) {

   453

		case 0x08: { /* Speed */

   454

			FOR_EACH_OBJECT {

   455

				uint8 speed = grf_load_byte(&buf);

   456

   457

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

   458

			}

   459

		} break;

   460

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

   461

			FOR_EACH_OBJECT {

   462

				uint8 runcost = grf_load_byte(&buf);

   463

   464

				rvi[i].running_cost = runcost;

   465

			}

   466

		} break;

   467

		case 0x0A: { /* Running cost base */

   468

			/* TODO: I have no idea. --pasky */

   469

			FOR_EACH_OBJECT {

   470

				grf_load_dword(&buf);

   471

			}

   472

			ret = true;

   473

		} break;

   474

		case 0x0E: { /* Sprite ID */

   475

			FOR_EACH_OBJECT {

   476

				uint8 spriteid = grf_load_byte(&buf);

   477

   478

				if (spriteid == 0xFF)

   479

					spriteid = 0xFD; // cars have different custom id in the GRF file

   480

   481

				rvi[i].image_index = spriteid;

   482

			}

   483

		} break;

   484

		case 0x0F: { /* Cargo capacity */

   485

			FOR_EACH_OBJECT {

   486

				uint16 capacity = grf_load_byte(&buf);

   487

   488

				rvi[i].capacity = capacity;

   489

			}

   490

		} break;

   491

		case 0x10: { /* Cargo type */

   492

			FOR_EACH_OBJECT {

   493

				uint8 cargo = grf_load_byte(&buf);