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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

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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;

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SpriteID _coast_base;

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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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static GRFConfig *_cur_grfconfig;

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/* 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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enum GrfDataType {

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	GDT_SOUND,

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};

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static byte _grf_data_blocks;

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static GrfDataType _grf_data_type;

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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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};

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

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   108

static const uint _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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   115

static const uint _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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   122

enum {

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	MAX_STATIONS = 256,

   125

};

   126

   127

static uint16 cargo_allowed[TOTAL_NUM_ENGINES];

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static uint16 cargo_disallowed[TOTAL_NUM_ENGINES];

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   130

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

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static uint32 _grm_engines[TOTAL_NUM_ENGINES];

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

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

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

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

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

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 * is no file information available during that time.

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

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

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{

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	char buf[1024];

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	va_list va;

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   149

	va_start(va, str);

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

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	va_end(va);

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   153

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

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}

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   156

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

   157

{

   158

	if (real >= wanted) return true;

   159

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

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	return false;

   161

}

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   163

static inline byte grf_load_byte(byte **buf)

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{

   165

	return *(*buf)++;

   166

}

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   168

static uint16 grf_load_word(byte **buf)

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{

   170

	uint16 val = grf_load_byte(buf);

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

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}

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   174

static uint16 grf_load_extended(byte** buf)

   175

{

   176

	uint16 val;

   177

	val = grf_load_byte(buf);

   178

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

   179

	return val;

   180

}

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   182

static uint32 grf_load_dword(byte **buf)

   183

{

   184

	uint32 val = grf_load_word(buf);

   185

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

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}

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   188

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

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{

   190

	switch (size) {

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		case 1: return grf_load_byte(buf);

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		case 2: return grf_load_word(buf);

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		case 4: return grf_load_dword(buf);

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		default:

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			NOT_REACHED();

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			return 0;

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	}

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}

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   200

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

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{

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

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	size_t string_length = ttd_strnlen(string, max_len);

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   205

	if (string_length == max_len) {

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

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

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

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	} else {

   210

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

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		string_length++;

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	}

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	*buf += string_length;

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	return string;

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}

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static GRFFile *GetFileByGRFID(uint32 grfid)

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{

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	GRFFile *file;

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   222

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

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

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	}

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	return file;

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}

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   228

static GRFFile *GetFileByFilename(const char *filename)

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{

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	GRFFile *file;

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   232

	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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/** 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

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 * @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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 */

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static StringID MapGRFStringID(uint32 grfid, StringID str)

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{

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	/* 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).

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

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

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

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

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	/* 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

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	 * to compensate for the difference */

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

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	return str;

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}

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static uint8 MapDOSColour(uint8 colour)

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{

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	if (_use_dos_palette) return colour;

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   273

	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];

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	}

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

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	return colour;

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}

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

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   286

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

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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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	if (condition != 0) {

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		ei->unk2 &= ~0x80;

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		if (rvi->railveh_type == RAILVEH_WAGON)

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			rvi->railveh_type = RAILVEH_SINGLEHEAD;

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	} else {

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		ei->unk2 |= 0x80;

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		rvi->railveh_type = RAILVEH_WAGON;

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	}

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}

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

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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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	byte *buf = *bufp;

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	int i;

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	bool ret = false;

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	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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   316

				switch (tracktype) {

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

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

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					default:

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

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						break;

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				}

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			}

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			break;

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		case 0x08: // AI passenger service

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			/* @todo missing feature */

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			FOR_EACH_OBJECT grf_load_byte(&buf);

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			ret = true;

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			break;

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

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			FOR_EACH_OBJECT {

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				uint16 speed = grf_load_word(&buf);

   336

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

   337

   338

				rvi[i].max_speed = speed;

   339

			}

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			break;

   341

   342

		case 0x0B: // Power

   343

			FOR_EACH_OBJECT {

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				uint16 power = grf_load_word(&buf);

   345

   346

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

   347

   348

				rvi[i].power = power;

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				dewagonize(power, engine + i);

   350

			}

   351

			break;

   352

   353

		case 0x0D: // Running cost factor

   354

			FOR_EACH_OBJECT {

   355

				uint8 runcostfact = grf_load_byte(&buf);

   356

   357

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

   358

   359

				rvi[i].running_cost_base = runcostfact;

   360

			}

   361

			break;

   362

   363

		case 0x0E: // Running cost base

   364

			FOR_EACH_OBJECT {

   365

				uint32 base = grf_load_dword(&buf);

   366

   367

				switch (base) {

   368

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

   369

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

   370

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

   371

					case 0: break; // Used by wagons

   372

					default:

   373

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

   374

						break;

   375

				}

   376

			}

   377

			break;

   378

   379

		case 0x12: // Sprite ID

   380

			FOR_EACH_OBJECT {

   381

				uint8 spriteid = grf_load_byte(&buf);

   382

   383

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

   384

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

   385

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

   386

   387

				rvi[i].image_index = spriteid;

   388

			}

   389

			break;

   390

   391

		case 0x13: // Dual-headed

   392

			FOR_EACH_OBJECT {

   393

				uint8 dual = grf_load_byte(&buf);

   394

   395

				if (dual != 0) {

   396

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

   397

						// adjust power and running cost if needed

   398

						rvi[i].power /= 2;

   399

						rvi[i].running_cost_base /= 2;

   400

					}

   401

					rvi[i].railveh_type = RAILVEH_MULTIHEAD;

   402

				} else {

   403

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

   404

						// adjust power and running cost if needed

   405

						rvi[i].power *= 2;

   406

						rvi[i].running_cost_base *= 2;

   407

					}

   408

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

   409

						RAILVEH_WAGON : RAILVEH_SINGLEHEAD;

   410

				}

   411

			}

   412

			break;

   413

   414

		case 0x14: // Cargo capacity

   415

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

   416

			break;

   417

   418

		case 0x15: // Cargo type

   419

			FOR_EACH_OBJECT {

   420

				uint8 ctype = grf_load_byte(&buf);

   421

   422

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

   423

					rvi[i].cargo_type = ctype;

   424

				} else {

   425

					rvi[i].cargo_type = CT_INVALID;

   426

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

   427

				}

   428

			}

   429

			break;

   430

   431

		case 0x16: // Weight

   432

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

   433

			break;

   434

   435

		case 0x17: // Cost factor

   436

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

   437

			break;

   438

   439

		case 0x18: // AI rank

   440

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

   441

			break;

   442

   443

		case 0x19: // Engine traction type

   444

			/* What do the individual numbers mean?

   445

			 * 0x00 .. 0x07: Steam

   446

			 * 0x08 .. 0x27: Diesel

   447

			 * 0x28 .. 0x31: Electric

   448

			 * 0x32 .. 0x37: Monorail

   449

			 * 0x38 .. 0x41: Maglev

   450

			 */

   451

			FOR_EACH_OBJECT {

   452

				uint8 traction = grf_load_byte(&buf);

   454

   455

				if (traction <= 0x07) {

   457

				} else if (traction <= 0x27) {

   459

				} else if (traction <= 0x31) {

   463

				} else if (traction <= 0x41) {

   465

				} else {

   466

					break;

   467

				}

   470

   471

				rvi[i].engclass = engclass;

   472

			}

   473

			break;

   474

   475

		case 0x1A: // Alter purchase list sort order

   476

			FOR_EACH_OBJECT {

   477

				EngineID pos = grf_load_byte(&buf);

   478

   479

				if (pos < NUM_TRAIN_ENGINES) {

   480

					AlterRailVehListOrder(engine + i, pos);

   481

				} else {

   482

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

   483

				}

   484

			}

   485

			break;

   486