Sacred

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PAK

• Format Type : Archive
  
• Endian Order : Little Endian
  

Format Specifications

byte {3}     - Header
byte {1}     - Version

if (header == TEX && version == 3){

// PAK\Texture*.pak

uint32 {4}   - Number Of Files

uint32 {4}   - Unknown

byte {244}   - null

// for each file

uint32 {4}   - Type ID

uint32 {4}   - Offset

uint32 {4}   - Compressed Size

// for each file

char {32}    - Filename (null)

uint16 {2}   - X Image Size

uint16 {2}   - Y Image Size

byte {1}     - Type ID

uint32 {4}   - Compressed Size

byte {39}    - null Padding

byte {X}     - File Data

}
else if (header == ISO && version == 3){

// PAK\Tiles.pak

uint32 {4}   - Number Of Files

uint32 {4}   - Number Of Files Yep, again

byte {244}   - null

// for each file

uint32 {4}   - Tag_66 Always = 66

uint32 {4}   - Offset

uint32 {4}   - Tag_64 Always = 64

// for each file

char {32}    - Filename (null)

uint32 {4}   - Entry Index within the file PAK\Texture.pak (Header = TEX)

uint32 {4}   - Tile position within texture image Range from 0 to 17

byte {6}     - null

byte {1}     - Tag_1 Always = 1

byte {17}    - null

}
else if (header == CIF && version == 0){

// PAK\Creature.pak

uint32 {4}   - Number Of Files

uint32 {4}   - Unknown

byte {244}   - null

// for each file

byte {64}    - File Data

}
else if (header == WPN && version == 8){

// PAK\Weapon.pak

uint32 {4}   - Number Of Files

uint32 {4}   - Unknown

// for each file

byte {322}   - File Data

}
else if (header == SND && version == 1){

// PAK\Sound.pak

uint32 {4}   - Number Of Files

uint32 {4}   - Unknown

byte {244}   - null

// for each file

uint32 {4}   - Type ID

uint32 {4}   - Offset

uint32 {4}   - Compressed Size

}
else if (header == ITM && version == 5){

// PAK\Items*.pak

uint32 {4}   - Number Of Files

uint32 {4}   - Unknown

byte {244}   - null

// for each file

uint32 {4}   - Type ID

uint32 {4}   - Offset

uint32 {4}   - Compressed Size

// for each file

byte {56}    - Unknown

char {32}    - Filename (null)

byte {X}     - File Data

}
else if (header == ITM && version == 3){

// PAK\Items*.pak ? I don't have ITM file(s) with version = 3, in Sacred+

uint32 {4}   - Number Of Files

uint32 {4}   - Unknown

byte {244}   - null

// for each file

uint32 {4}   - Type ID

uint32 {4}   - Offset

uint32 {4}   - Compressed Size

// for each file

char {32}    - Filename (null)

byte {X}     - File Data

}
else if (header == MDL && version == 3){

// PAK\Models*.pak

Unknown

}
else if (header == MHP && version == 1){

// PAK\Motions.pak

Unknown

}
else if (header == MIX && version == 0){

// PAK\Mixed.pak

Unknown

}
else if (header == OBJ && version == 1){

// World\Floor.pak, World\Static.pak,

Unknown

}
else if (header == SPF && version == 1){

// PAK\sndProfiles.pak

Unknown

}
else if (header == TRG && version == 1){

// World\Triggers.pak

Unknown

}

File Data Format in TEX (textures) PAK

This is a simple zlib-compressed image, as the first character of the File Data indicates (it's an 'x'). The size of this File Data is 'Compressed Size' bytes, the size of the uncompressed file is :

   Uncompressed File Data Size = (X Image Size) * (Y Image Size) * 2

Once uncompressed, you have directly the pixels. Each pixel is an unsigned word (16 bits). It contains Alpha, Red, Green and Blue componant values, and each are 4 bits. A mapping of these bits would give :

   (highest bit) AAAARRRRGGGGBBBB (lowest bit)

The encoding of the pixel is Top to Bottom, and for each line is Left to Right. Note : the Alpha channel IS really used (it's not just for padding), check H_KEULE_02_1.TGA from texture00.pak for a good example (16 levels of alpha here)

MultiEx BMS Script

Not written yet

Compatible Programs

• Game Extractor