Author Topic: ff8 battle file animation format  (Read 107 times)

perkyplumber

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ff8 battle file animation format
« on: 2018-05-13 17:58:19 »
Final Fantasy VIII battle files Animation data decryption

General

Number of animations      Long Integer
Offset to Animation stream   Long Integer ( * Number of Animations )

Animation stream

Number of frames      Byte

The rest of this data needs to be decoded 1 bit at a time. Byte boundaries are ignored.

position xyz of bone 0               variable length
rotation xyz of bone 0 to number of bones      Variable length


Position data

bits 1,2 data length 00 = 3bits 01 = 6bits 10 = 9 bits 11 = 16bits
data signed integer multiply by 0.15
repeat for y and z position then skip 1 bit

Rotation data


bone angle valid ( 1 = true 0 = false )
next 2 bits data length 00 = 3bits 01 = 6bits 10 = 8 bits 11 = 12bits
data signed integer
repeat until number of bones * 3 are read

repeat reading position and rotation data * number of frames

for frame 1 convert data to degrees using 180 * data / 2048
for the rest of the frames add the data to frame-1 data before
converting to degrees

ie frame 1 bone0.x = -949   180 * -949 / 2048       = -83.408 degrees
   frame 2 bone0.x = 9      180 * (-949 + 9) / 2048 = -82.617 degrees