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(svn r553) -newgrf: Special routine for loading newgrf files. LoadNewGrfFile() introduced; will get more handy when loading stages will be introduced (octo and pasky).

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darkvater 2004-11-12 21:51:34 +00:00
parent 7accdb9003
commit 015cb74dd9
1 changed files with 59 additions and 3 deletions
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62
spritecache.c
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@ -282,7 +282,13 @@ static int LoadGrfFile(const char *filename, int load_index, int file_index)
FioOpenFile(file_index, filename);
_cur_grffile = filename;
_skip_specials = !strncmp(filename, "TRG", 3);
/* 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''", _cur_grffile);
if(file_index==0 && !_ignore_wrong_grf)
if(!CheckGrfFile())
@ -295,12 +301,58 @@ static int LoadGrfFile(const char *filename, int load_index, int file_index)
}
}
return load_index - load_index_org;
}
static int LoadNewGrfFile(const char *filename, int load_index, int file_index)
{
/* XXX: Is it better to fervently follow the num_sprites information or
* be tolerant and comply with more/less sprites too? --pasky */
int num_sprites = 0;
int i;
FioOpenFile(file_index, filename);
_cur_grffile = filename;
_skip_specials = 0;
_skip_sprites = 0;
DEBUG(spritecache, 2) ("Reading newgrf-file ``%s'' [offset: %u]",
_cur_grffile, load_index);
{
int length;
byte type;
length = FioReadWord();
type = FioReadByte();
if ((length == 4) && (type == 0xFF)) {
num_sprites = FioReadDword();
} else {
error("Custom .grf has invalid format.");
}
/* Ignore last sprite, it's only used to mark end-of-file */
num_sprites--;
load_index++;
}
if ((load_index + num_sprites) > NUM_SPRITES)
error("Too many sprites (%x). Recompile with higher NUM_SPRITES value or remove some custom GRF files.",
load_index + num_sprites);
for (i = 0; i < num_sprites; i++) {
if (!LoadNextSprite(load_index + i, file_index))
error("NEWGRF: Header was talking abount %d sprites, but only %d found..",
num_sprites, i);
}
/* Clean up. */
_skip_sprites = 0;
memset(_replace_sprites_count, 0, 16 * sizeof(*_replace_sprites_count));
memset(_replace_sprites_offset, 0, 16 * sizeof(*_replace_sprites_offset));
return load_index - load_index_org;
return num_sprites;
}
static void LoadGrfIndexed(const char *filename, const uint16 *index_tbl, int file_index)
@ -309,6 +361,10 @@ static void LoadGrfIndexed(const char *filename, const uint16 *index_tbl, int fi
FioOpenFile(file_index, filename);
_cur_grffile = filename;
_skip_specials = 1;
_skip_sprites = 0;
DEBUG(spritecache, 2) ("Reading indexed grf-file ``%s''", _cur_grffile);
for(;(start=*index_tbl++) != 0xffff;) {
int end = *index_tbl++;
@ -753,7 +809,7 @@ static void LoadSpriteTables()
load_index = SPR_OPENTTD_BASE + OPENTTD_SPRITES_COUNT + 1;
for(j=0; j!=lengthof(_newgrf_files) && _newgrf_files[j]; j++)
load_index += LoadGrfFile(_newgrf_files[j], load_index, i++);
load_index += LoadNewGrfFile(_newgrf_files[j], load_index, i++);
// If needed, save the cache to file
HandleCachedSpriteHeaders(_cached_filenames[_opt.landscape], false);