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/* $Id$ */
#include "stdafx.h"
#include "openttd.h"
#include "debug.h"
#include "functions.h"
#include "gfx.h"
#include "gfxinit.h"
#include "spritecache.h"
#include "table/sprites.h"
#include "fileio.h"
#include "newgrf.h"
#include "md5.h"
#include "variables.h"
#include <ctype.h>
#define SPRITE_CACHE_SIZE 1024*1024
#define WANT_NEW_LRU
/* These are used in newgrf.c: */
int _skip_sprites = 0; // XXX
int _replace_sprites_count[16]; // XXX
int _replace_sprites_offset[16]; // XXX
const char* _cur_grffile; // XXX
int _loading_stage; // XXX
int _skip_specials; // XXX
uint16 _custom_sprites_base; // XXX
typedef struct MD5File {
const char * const filename; // filename
const md5_byte_t hash[16]; // md5 sum of the file
} MD5File;
typedef struct FileList {
const MD5File basic[5]; // grf files that always have to be loaded
const MD5File landscape[3]; // landscape specific grf files
} FileList;
#include "table/files.h"
#include "table/landscape_sprite.h"
static const SpriteID * const _landscape_spriteindexes[] = {
_landscape_spriteindexes_1,
_landscape_spriteindexes_2,
_landscape_spriteindexes_3,
};
static const SpriteID * const _slopes_spriteindexes[] = {
_slopes_spriteindexes_0,
_slopes_spriteindexes_1,
_slopes_spriteindexes_2,
_slopes_spriteindexes_3,
};
static int LoadGrfFile(const char *filename, int load_index, int file_index)
{
int load_index_org = load_index;
FioOpenFile(file_index, filename);
/* Thou shalt use LoadNewGrfFile() if thou loadeth a GRF file that
* might contain some special sprites. */
_skip_specials = 1;
_skip_sprites = 0;
DEBUG(spritecache, 2) ("Reading grf-file ``%s''", filename);
while (LoadNextSprite(load_index, file_index)) {
load_index++;
if (load_index >= MAX_SPRITES) {
error("Too many sprites. Recompile with higher MAX_SPRITES value or remove some custom GRF files.");
}
}
DEBUG(spritecache, 2) ("Currently %i sprites are loaded", load_index);
return load_index - load_index_org;
}
static int LoadNewGrfFile(const char *filename, int load_index, int file_index)
{
int i;
FioOpenFile(file_index, filename);
_cur_grffile = filename;
_skip_specials = 0;
_skip_sprites = 0;
DEBUG(spritecache, 2) ("Reading newgrf-file ``%s'' [offset: %u]",
filename, load_index);
/* Skip the first sprite; we don't care about how many sprites this
* does contain; newest TTDPatches and George's longvehicles don't
* neither, apparently. */
{
int length;
byte type;
length = FioReadWord();
type = FioReadByte();
if (length == 4 && type == 0xFF) {
FioReadDword();
} else {
error("Custom .grf has invalid format.");
}
}
for (i = 0; LoadNextSprite(load_index + i, file_index); i++) {
if (load_index + i >= MAX_SPRITES)
error("Too many sprites (0x%X). Recompile with higher MAX_SPRITES value or remove some custom GRF files.",
load_index + i);
}
/* Clean up. */
_skip_sprites = 0;
memset(_replace_sprites_count, 0, sizeof(_replace_sprites_count));
memset(_replace_sprites_offset, 0, sizeof(_replace_sprites_offset));
return i;
}
static void LoadGrfIndexed(const char *filename, const SpriteID *index_tbl, int file_index)
{
int start;
FioOpenFile(file_index, filename);
_skip_specials = 1;
_skip_sprites = 0;
DEBUG(spritecache, 2) ("Reading indexed grf-file ``%s''", filename);
for (; (start = *index_tbl++) != 0xffff;) {
int end = *index_tbl++;
if(start == 0xfffe) { // skip sprites (amount in second var)
SkipSprites(end);
} else { // load sprites and use indexes from start to end
do {
#ifdef NDEBUG
LoadNextSprite(start, file_index);
#else
bool b = LoadNextSprite(start, file_index);
assert(b);
#endif
} while (++start <= end);
}
}
}
static byte _sprite_page_to_load = 0xFF;
#define OPENTTD_SPRITES_COUNT 100
static const SpriteID _openttd_grf_indexes[] = {
SPR_OPENTTD_BASE + 0, SPR_OPENTTD_BASE + 7, // icons etc
134, 134, // euro symbol medium size
582, 582, // euro symbol large size
358, 358, // euro symbol tiny
SPR_OPENTTD_BASE+11, SPR_OPENTTD_BASE+57, // more icons
648, 648, // nordic char: æ
616, 616, // nordic char: Æ
666, 666, // nordic char: ø
634, 634, // nordic char: Ø
SPR_OPENTTD_BASE+62, SPR_OPENTTD_BASE + OPENTTD_SPRITES_COUNT, // more icons
0xffff,
};
/* FUNCTIONS FOR CHECKING MD5 SUMS OF GRF FILES */
/* Check that the supplied MD5 hash matches that stored for the supplied filename */
static bool CheckMD5Digest(const MD5File file, md5_byte_t *digest, bool warn)
{
uint i;
/* Loop through each byte of the file MD5 and the stored MD5... */
for (i = 0; i < 16; i++) if (file.hash[i] != digest[i]) break;
/* If all bytes of the MD5's match (i.e. the MD5's match)... */
if (i == 16) {
return true;
} else {
if (warn) fprintf(stderr, "MD5 of %s is ****INCORRECT**** - File Corrupt.\n", file.filename);
return false;
};
}
/* Calculate and check the MD5 hash of the supplied filename.
* returns true if the checksum is correct */
static bool FileMD5(const MD5File file, bool warn)
{
FILE *f;
char buf[MAX_PATH];
// open file
sprintf(buf, "%s%s", _path.data_dir, file.filename);
f = fopen(buf, "rb");
#if !defined(WIN32)
if (f == NULL) {
char *s;
// make lower case and check again
for (s = buf + strlen(_path.data_dir) - 1; *s != '\0'; s++)
*s = tolower(*s);
f = fopen(buf, "rb");
}
#endif
if (f != NULL) {
md5_state_t filemd5state;
md5_byte_t buffer[1024];
md5_byte_t digest[16];
size_t len;
md5_init(&filemd5state);
while ((len = fread(buffer, 1, sizeof(buffer), f)) != 0)
md5_append(&filemd5state, buffer, len);
if (ferror(f) && warn) fprintf(stderr, "Error Reading from %s \n", buf);
fclose(f);
md5_finish(&filemd5state, digest);
return CheckMD5Digest(file, digest, warn);
} else { // file not found
return false;
}
}
/* Checks, if either the Windows files exist (TRG1R.GRF) or the DOS files (TRG1.GRF)
* by comparing the MD5 checksums of the files. _use_dos_palette is set accordingly.
* If neither are found, Windows palette is assumed.
*
* (Note: Also checks sample.cat for corruption) */
void CheckExternalFiles(void)
{
uint i;
// count of files from this version
uint dos = 0;
uint win = 0;
for (i = 0; i < 2; i++) if (FileMD5(files_dos.basic[i], true)) dos++;
for (i = 0; i < 3; i++) if (FileMD5(files_dos.landscape[i], true)) dos++;
for (i = 0; i < 2; i++) if (FileMD5(files_win.basic[i], true)) win++;
for (i = 0; i < 3; i++) if (FileMD5(files_win.landscape[i], true)) win++;
if (!FileMD5(sample_cat_win, false) && !FileMD5(sample_cat_dos, false))
fprintf(stderr, "Your sample.cat file is corrupted or missing!\n");
/*
* forced DOS palette via command line -> leave it that way
* all Windows files present -> Windows palette
* all DOS files present -> DOS palette
* no Windows files present and any DOS file present -> DOS palette
* otherwise -> Windows palette
*/
if (_use_dos_palette) {
return;
} else if (win == 5) {
_use_dos_palette = false;
} else if (dos == 5 || (win == 0 && dos > 0)) {
_use_dos_palette = true;
} else {
_use_dos_palette = false;
}
}
static void LoadSpriteTables(void)
{
int load_index = 0;
uint i;
uint j;
const FileList *files; // list of grf files to be loaded. Either Windows files or DOS files
_loading_stage = 1;
/*
* TODO:
* I think we can live entirely without Indexed GRFs, but I have to
* invest that further. --octo
*/
files = _use_dos_palette? &files_dos : &files_win;
for (i = 0; files->basic[i].filename != NULL; i++) {
load_index += LoadGrfFile(files->basic[i].filename, load_index, i);
}
LoadGrfIndexed("openttd.grf", _openttd_grf_indexes, i++);
if (_sprite_page_to_load != 0) {
LoadGrfIndexed(
files->landscape[_sprite_page_to_load - 1].filename,
_landscape_spriteindexes[_sprite_page_to_load - 1],
i++
);
}
LoadGrfIndexed("trkfoundw.grf", _slopes_spriteindexes[_opt.landscape], i++);
load_index = SPR_AUTORAIL_BASE;
load_index += LoadGrfFile("autorail.grf", load_index, i++);
load_index = SPR_CANALS_BASE;
load_index += LoadGrfFile("canalsw.grf", load_index, i++);
load_index = SPR_OPENTTD_BASE + OPENTTD_SPRITES_COUNT + 1;
/* Load newgrf sprites
* in each loading stage, (try to) open each file specified in the config
* and load information from it. */
_custom_sprites_base = load_index;
for (_loading_stage = 0; _loading_stage < 2; _loading_stage++) {
load_index = _custom_sprites_base;
for (j = 0; j != lengthof(_newgrf_files) && _newgrf_files[j]; j++) {
if (!FiosCheckFileExists(_newgrf_files[j])) {
// TODO: usrerror()
error("NewGRF file missing: %s", _newgrf_files[j]);
}
if (_loading_stage == 0) InitNewGRFFile(_newgrf_files[j], load_index);
load_index += LoadNewGrfFile(_newgrf_files[j], load_index, i++);
DEBUG(spritecache, 2) ("Currently %i sprites are loaded", load_index);
}
}
}
void GfxLoadSprites(void)
{
// Need to reload the sprites only if the landscape changed
if (_sprite_page_to_load != _opt.landscape) {
_sprite_page_to_load = _opt.landscape;
// Sprite cache
DEBUG(spritecache, 1) ("Loading sprite set %d.", _sprite_page_to_load);
GfxInitSpriteMem();
LoadSpriteTables();
GfxInitPalettes();
}
}
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