14

#include "fios.h"

    28

	MD5File basic[2];     ///< GRF files that always have to be loaded

    29

	MD5File landscape[3]; ///< Landscape specific grf files

    30

	MD5File sound;        ///< Sound samples

    31

	MD5File chars;        ///< GRF File with character replacements

    32

	MD5File openttd;      ///< GRF File with OTTD specific graphics

    44

static uint LoadGrfFile(const char *filename, uint load_index, int file_index)

    66

void LoadSpritesIndexed(int file_index, uint *sprite_id, const SpriteID *index_tbl)

    67

{

    68

	uint start;

    69

	while ((start = *index_tbl++) != END) {

    70

		uint end = *index_tbl++;

    71

    72

		if (start == SKIP) { // skip sprites (amount in second var)

    73

			SkipSprites(end);

    74

			(*sprite_id) += end;

    75

		} else { // load sprites and use indexes from start to end

    76

			do {

    77

			#ifdef NDEBUG

    78

				LoadNextSprite(start, file_index, *sprite_id);

    79

			#else

    80

				bool b = LoadNextSprite(start, file_index, *sprite_id);

    81

				assert(b);

    82

			#endif

    83

				(*sprite_id)++;

    84

			} while (++start <= end);

    85

		}

    86

	}

    87

}

    88

    97

	LoadSpritesIndexed(file_index, &sprite_id, index_tbl);

   101

/**

   102

 * Calculate and check the MD5 hash of the supplied filename.

   103

 * @param file filename and expected MD5 hash for the given filename.

   104

 * @return true if the checksum is correct.

   105

 */

   106

static bool FileMD5(const MD5File file)

   126

		return memcmp(file.hash, digest, sizeof(file.hash)) == 0;

   132

/**

   133

 * Determine the palette that has to be used.

   134

 *  - forced DOS palette via command line -> leave it that way

   135

 *  - all Windows files present -> Windows palette

   136

 *  - all DOS files present -> DOS palette

   137

 *  - no Windows files present and any DOS file present -> DOS palette

   138

 *  - otherwise -> Windows palette

   139

 */

   140

static void DeterminePalette()

   142

	if (_use_dos_palette) return;

   143

   144

	/* Count of files from the different versions. */

   148

	for (uint i = 0; i < lengthof(files_dos.basic); i++) if (FioCheckFileExists(files_dos.basic[i].filename)) dos++;

   149

	for (uint i = 0; i < lengthof(files_dos.landscape); i++) if (FioCheckFileExists(files_dos.landscape[i].filename)) dos++;

   151

	for (uint i = 0; i < lengthof(files_win.basic); i++) if (FioCheckFileExists(files_win.basic[i].filename)) win++;

   152

	for (uint i = 0; i < lengthof(files_win.landscape); i++) if (FioCheckFileExists(files_win.landscape[i].filename)) win++;

   154

	if (win == 5) {

   163

/**

   164

 * Checks whether the MD5 checksums of the files are correct.

   165

 *

   166

 * @note Also checks sample.cat and other required non-NewGRF GRFs for corruption.

   167

 */

   168

void CheckExternalFiles()

   169

{

   170

	DeterminePalette();

   171

   172

	static const size_t ERROR_MESSAGE_LENGTH = 128;

   173

	const FileList *files = _use_dos_palette ? &files_dos : &files_win;

   174

	char error_msg[ERROR_MESSAGE_LENGTH * (lengthof(files->basic) + lengthof(files->landscape) + 3)];

   175

	error_msg[0] = '\0';

   176

	char *add_pos = error_msg;

   177

   178

	for (uint i = 0; i < lengthof(files->basic); i++) {

   179

		if (!FileMD5(files->basic[i])) {

   180

			add_pos += snprintf(add_pos, ERROR_MESSAGE_LENGTH, "Your '%s' file is corrupted or missing! You can find '%s' on your Transport Tycoon Deluxe CD-ROM.\n", files->basic[i].filename, files->basic[i].filename);

   181

		}

   182

	}

   183

   184

	for (uint i = 0; i < lengthof(files->landscape); i++) {

   185

		if (!FileMD5(files->landscape[i])) {

   186

			add_pos += snprintf(add_pos, ERROR_MESSAGE_LENGTH, "Your '%s' file is corrupted or missing! You can find '%s' on your Transport Tycoon Deluxe CD-ROM.\n", files->landscape[i].filename, files->landscape[i].filename);

   187

		}

   188

	}

   189

   190

	if (!FileMD5(files_win.sound) && !FileMD5(files_dos.sound)) {

   191

		add_pos += snprintf(add_pos, ERROR_MESSAGE_LENGTH, "Your 'sample.cat' file is corrupted or missing! You can find 'sample.cat' on your Transport Tycoon Deluxe CD-ROM.\n");

   192

	}

   193

   194

	if (!FileMD5(files->chars)) {

   195

		add_pos += snprintf(add_pos, ERROR_MESSAGE_LENGTH, "Your '%s' file is corrupted or missing! The file was part of your installation.\n", files->chars.filename);

   196

	}

   197

   198

	if (!FileMD5(files->openttd)) {

   199

		add_pos += snprintf(add_pos, ERROR_MESSAGE_LENGTH, "Your '%s' file is corrupted or missing! The file was part of your installation.\n", files->openttd.filename);

   200

	}

   201

   202

	if (add_pos != error_msg) ShowInfoF(error_msg);

   203

}

   204

   286

/** Replace some letter sprites with some other letters */

   287

static const SpriteID _chars_grf_indexes[] = {

   288

	134, 134, ///<  euro symbol medium size

   289

	582, 582, ///<  euro symbol large size

   290

	358, 358, ///<  euro symbol tiny

   335

	const FileList *files = _use_dos_palette ? &files_dos : &files_win;

   336

	uint i = FIRST_GRF_SLOT;

   338

	LoadGrfIndexed(files->basic[0].filename, trg1idx, i++);

   343

	/*

   344

	 * The second basic file always starts at the given location and does

   345

	 * contain a different amount of sprites depending on the "type"; DOS

   346

	 * has a few sprites less. However, we do not care about those missing

   347

	 * sprites as they are not shown anyway (logos in intro game).

   348

	 */

   349

	LoadGrfFile(files->basic[1].filename, 4793, i++);

   351

	/*

   352

	 * Load additional sprites for climates other than temperate.

   353

	 * This overwrites some of the temperate sprites, such as foundations

   354

	 * and the ground sprites.

   355

	 */

   364

	LoadGrfIndexed(files->chars.filename, _chars_grf_indexes, i++);

   369

	/*

   370

	 * Load the base NewGRF with OTTD required graphics as first NewGRF.

   371

	 * However, we do not want it to show up in the list of used NewGRFs,

   372

	 * so we have to manually add it, and then remove it later.

   373

	 */

   374

	GRFConfig *top = _grfconfig;

   375

	GRFConfig *master = CallocT<GRFConfig>(1);

   376

	master->filename = strdup(files->openttd.filename);

   377

	FillGRFDetails(master, false);

   378

	ClrBit(master->flags, GCF_INIT_ONLY);

   379

	master->next = top;

   380

	_grfconfig = master;

   381

   382

	LoadNewGRF(SPR_NEWGRFS_BASE, i);

   383

   384

	/* Free and remove the top element. */

   385

	ClearGRFConfig(&master);

   386

	_grfconfig = top;