void nbtGetFileVersion(bfFile bf, int *version)
{
int len;
//Data/version
bfseek(bf,1,SEEK_CUR); //skip type
len=readWord(bf); //name length
bfseek(bf,len,SEEK_CUR); //skip name ()
if (nbtFindElement(bf,"Data")!=10) return;
if (nbtFindElement(bf,"version")!=3) return;
*version=readDword(bf);
}
//void nbtGetRandomSeed(bfFile bf,long long *seed)
//{
// int len;
// *seed=0;
// //Data/RandomSeed
// bfseek(bf,1,SEEK_CUR); //skip type
// len=readWord(bf); //name length
// bfseek(bf,len,SEEK_CUR); //skip name ()
// if (nbtFindElement(bf,"Data")!=10) return;
// if (nbtFindElement(bf,"RandomSeed")!=4) return;
// *seed=readLong(bf);
//}
void nbtGetPlayer(bfFile bf,int *px,int *py,int *pz)
{
int len;
*px=*py=*pz=0;
//Data/Player/Pos
bfseek(bf,1,SEEK_CUR); //skip type
len=readWord(bf); //name length
bfseek(bf,len,SEEK_CUR); //skip name ()
if (nbtFindElement(bf,"Data")!=10) return;
if (nbtFindElement(bf,"Player")!=10) return;
if (nbtFindElement(bf,"Pos")!=9) return;
bfseek(bf,5,SEEK_CUR); //skip subtype and num items
*px=(int)readDouble(bf);
*py=(int)readDouble(bf);
*pz=(int)readDouble(bf);
}
void nbtGetSpawn(bfFile bf,int *x,int *y,int *z)
{
int len;
*x=*y=*z=0;
//Data/SpawnX
bfseek(bf,1,SEEK_CUR); //skip type
len=readWord(bf); //name length
bfseek(bf,len,SEEK_CUR); //skip name ()
if (nbtFindElement(bf,"Data")!=10) return;
if (nbtFindElement(bf,"SpawnX")!=3) return;
*x=readDword(bf);
if (nbtFindElement(bf,"SpawnY")!=3) return;
*y=readDword(bf);
if (nbtFindElement(bf,"SpawnZ")!=3) return;
*z=readDword(bf);
}
int nbtGetBlocks(bfFile bf, unsigned char *buff, unsigned char *data, unsigned char *blockLight, unsigned char *biome)
{
int len,nsections;
int biome_save;
//int found;
#ifndef C99
char *thisName;
#endif
//Level/Blocks
bfseek(bf,1,SEEK_CUR); //skip type
len=readWord(bf); //name length
bfseek(bf,len,SEEK_CUR); //skip name ()
if (nbtFindElement(bf,"Level")!=10)
return 0;
// For some reason, on most maps the biome info is before the Sections;
// on others they're after. So, read biome data, then rewind to find Sections.
// Format info at http://wiki.vg/Map_Format, though don't trust order.
biome_save = *bf.offset;
memset(biome, 0, 16*16);
if (nbtFindElement(bf,"Biomes")!=7)
return 0;
{
len=readDword(bf); //array length
bfread(bf,biome,len);
}
bfseek(bf,biome_save,SEEK_SET); //rewind to start of section
if (nbtFindElement(bf,"Sections")!= 9)
return 0;
{
unsigned char type=0;
bfread(bf,&type,1);
if (type != 10)
return 0;
}
memset(buff, 0, 16*16*256);
memset(data, 0, 16*16*128);
memset(blockLight, 0, 16*16*128);
nsections=readDword(bf);
while (nsections--)
{
unsigned char y;
int save = *bf.offset;
if (nbtFindElement(bf,"Y")!=1) //which section is this?
return 0;
bfread(bf,&y,1);
bfseek(bf,save,SEEK_SET); //rewind to start of section
//found=0;
for (;;)
{
int ret=0;
unsigned char type=0;
bfread(bf,&type,1);
if (type==0)
break;
len=readWord(bf);
#ifdef C99
char thisName[len+1];
#else
thisName=(char *)malloc(len+1);
#endif
bfread(bf,thisName,len);
thisName[len]=0;
if (strcmp(thisName,"BlockLight")==0)
{
//found++;
ret=1;
len=readDword(bf); //array length
bfread(bf,blockLight+16*16*8*y,len);
}
if (strcmp(thisName,"Blocks")==0)
{
//found++;
ret=1;
len=readDword(bf); //array length
bfread(bf,buff+16*16*16*y,len);
}
else if (strcmp(thisName,"Data")==0)
{
//found++;
ret=1;
len=readDword(bf); //array length
bfread(bf,data+16*16*8*y,len);
}
#ifndef C99
free(thisName);
#endif
if (!ret)
skipType(bf,type);
}
}
return 1;
}
int nbtGetBlocks(bfFile bf, unsigned char *buff, unsigned char *data, unsigned char *blockLight)
{
int len,nsections;
//int found;
#ifndef C99
char *thisName;
#endif
//Level/Blocks
bfseek(bf,1,SEEK_CUR); //skip type
len=readWord(bf); //name length
bfseek(bf,len,SEEK_CUR); //skip name ()
if (nbtFindElement(bf,"Level")!=10)
return 0;
if (nbtFindElement(bf,"Sections")!= 9)
return 0;
{
unsigned char type=0;
bfread(bf,&type,1);
if (type != 10)
return 0;
}
memset(buff, 0, 16*16*256);
memset(data, 0, 16*16*128);
memset(blockLight, 0, 16*16*128);
nsections=readDword(bf);
while (nsections--)
{
unsigned char y;
int save = *bf.offset;
if (nbtFindElement(bf,"Y")!=1) //which section is this?
return 0;
bfread(bf,&y,1);
bfseek(bf,save,SEEK_SET); //rewind to start of section
//found=0;
for (;;)
{
int ret=0;
unsigned char type=0;
bfread(bf,&type,1);
if (type==0)
break;
len=readWord(bf);
#ifdef C99
char thisName[len+1];
#else
thisName=(char *)malloc(len+1);
#endif
bfread(bf,thisName,len);
thisName[len]=0;
if (strcmp(thisName,"BlockLight")==0)
{
//found++;
ret=1;
len=readDword(bf); //array length
bfread(bf,blockLight+16*16*8*y,len);
}
if (strcmp(thisName,"Blocks")==0)
{
//found++;
ret=1;
len=readDword(bf); //array length
bfread(bf,buff+16*16*16*y,len);
}
else if (strcmp(thisName,"Data")==0)
{
//found++;
ret=1;
len=readDword(bf); //array length
bfread(bf,data+16*16*8*y,len);
}
#ifndef C99
free(thisName);
#endif
if (!ret)
skipType(bf,type);
}
}
return 1;
}
