This page describes the .bpk format. .bpk is used to animation the colors on a model. It is used for objects like bob-ombs. It is similar to the structure of .brk files.
File Format
J3D Header
| Offset |
Format |
Description
|
| 0x00 |
4-byte String |
File type magic (always PAK1)
|
| 0x04 |
UInt32 |
Section size
|
| 0x08 |
UInt8 |
Loop mode
|
| 0x0c |
UInt16 |
Duration
|
| 0x0e |
UInt16 |
Color Animation count
|
| 0x10 |
UInt16 |
Red Count
|
| 0x12 |
UInt16 |
Green Count
|
| 0x14 |
UInt16 |
Blue Count
|
| 0x16 |
UInt16 |
Alpha Count
|
| 0x18 |
UInt32 |
Color Animation offset
|
| 0x1c |
UInt32 |
Index / remap table offset
|
| 0x20 |
UInt32 |
Stringtable offset
|
| 0x24 |
UInt32 |
Red offset
|
| 0x24 |
UInt32 |
Green offset
|
| 0x24 |
UInt32 |
Blue offset
|
| 0x24 |
UInt32 |
Alpha offset
|
Color Animation Entry
| Offset |
Format |
Description
|
| 0x00 |
Component Entry |
Red component entry
|
| 0x06 |
Component Entry |
Green component entry
|
| 0x0c |
Component Entry |
Blue component entry
|
| 0x12 |
Component Entry |
Alpha component entry
|
Component Table Entry
| Offset |
Format |
Description
|
| 0x00 |
Component Entry |
Red component entry
|
| 0x02 |
Component Entry |
Green component entry
|
| 0x04 |
Component Entry |
Blue component entry
|
Each component table (red, green, blue, alpha) is composed of several Keyframes.
Keyframe
| Offset |
Format |
Description
|
| 0x00 |
UInt16 |
Frame
|
| 0x02 |
UInt16 |
Value
|
| 0x04 |
UInt16 |
Tangent
|
Tools
References
noclip Github