i hear so many different things its starting to confuse me. ive seen the structure of a pak from quake 2 and it has a different structure to another pak used in a different game. i heard paks are made by some freeware and its a standard method yet i cant find any doc's on it.

the following code is how a pak is read from a game i play and also i saw a comment referring to the pak structure as a .ASD structure.

so could someone point me to a structure of a standard pak or some freeware that is open source that deals with paks? or just any info on this matter ;/.

CSprite::CSprite(HANDLE hFileRead, short sSprID, short NthFile, char* FileName)
{
int i;
DWORD nCount, dwASDfileLoc;
for( i=0 ; i < 60 ; i++ )
{
m_stBrush[i].x = -1;
m_stBrush[i].y = -1;
m_stBrush[i].szx = -1;
m_stBrush[i].szy = -1;
m_stBrush[i].pvx = -1;
m_stBrush[i].pvy = -1;
}
m_sSprID = sSprID;
ZeroMemory( m_cFileName, sizeof(m_cFileName) );
strcpy( m_cFileName, FileName );
SetFilePointer(hFileRead, 24 + NthFile*8, NULL, FILE_BEGIN);
ReadFile(hFileRead, &dwASDfileLoc, 4, &nCount, NULL);
SetFilePointer(hFileRead, dwASDfileLoc+100, NULL, FILE_BEGIN);
ReadFile(hFileRead, &m_iTotalFrame, 4, &nCount, NULL);
ReadFile(hFileRead, m_stSpd, m_iTotalFrame*12, &nCount, NULL);
m_dwBmpStartPos = dwASDfileLoc + 108 + m_iTotalFrame*12;
m_bIsDCEmpty = TRUE;
}