BCA (File Format)
This page describes the .bca format. .bca is primarily used for driver animations, but some objects and items use them as well. This format is similar to .bck, but .bca animations all frames instead of just keyframes.
File Format
| Offset | Format | Description |
|---|---|---|
| 0x00 | 4-byte String | File type magic (always ANF1) |
| 0x04 | UInt32 | Section size |
| 0x08 | UInt8 | Loop mode |
| 0x09 | UInt8 | Angle scale |
| 0x0a | UInt16 | Duration |
| 0x0c | UInt16 | Joint / Bone count |
| 0x0e | UInt16 | Scale count |
| 0x10 | UInt16 | Rotation count |
| 0x12 | UInt16 | Translation count |
| 0x14 | UInt32 | Joint / Bone offset |
| 0x18 | UInt32 | Scale offset |
| 0x1c | UInt32 | Rotation offset |
| 0x20 | UInt32 | Translation offset |
Counts and offsets refer to the Scale, Offset, and Translation tables.
| Offset | Format | Description |
|---|---|---|
| 0x00 | UInt16 | x scale count |
| 0x02 | UInt16 | x scale offset |
| 0x04 | UInt16 | x rotation count |
| 0x06 | UInt16 | x rotation offset |
| 0x08 | UInt16 | x translation count |
| 0x0a | UInt16 | x translation offset |
| 0x0c | UInt16 | y scale count |
| 0x0e | UInt16 | y scale offset |
| 0x10 | UInt16 | y rotation count |
| 0x12 | UInt16 | y rotation offset |
| 0x14 | UInt16 | y translation count |
| 0x16 | UInt16 | y translation offset |
| 0x18 | UInt16 | z scale count |
| 0x1a | UInt16 | z scale offset |
| 0x1c | UInt16 | z rotation count |
| 0x1e | UInt16 | z rotation offset |
| 0x20 | UInt16 | z translation count |
| 0x22 | UInt16 | z translation offset |
The scale, rotation, and translation tables are the same in structure: they are basically a list all of the values that are needed for each bone.
| SRT | Format |
|---|---|
| Scale | Float |
| Rotation | SInt16 |
| Translate | Float |