OBD:TRIA

ONI BINARY DATA TRGE << Other file types >> TRIG TRIA : Totoro Quaternion Body Index Array switch to XML:TRIA page Overview @ Oni Stuff

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Offset	Type	Raw Hex	Value	Description
0x00	res_id	01 63 04 00	1123	01123-.TRIA
0x04	lev_id	01 00 00 06	3	level 3
0x08	char[22]	AD DE...	dead	unused
0x0e	int16	13 00	19	array size
First element (black outline)
0x00	int8	00	0	parent bone ID : none
0x01	int8	01	1	child bone ID : left thigh
0x02	int8	00	0	sibling bone ID : none
0x03	int8	DE	dead	unused

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Parent bone ID

Oni doesn't seem to parse it : the direct links (child + sibling) are enough to define the bone hierarchy.

Child bone ID

There is no child (null child) for e.g. head, feet, fists. Multiple children are specified via the sibling link.

Sibling bone ID

"left leg" links to "right leg", which links to "mid" : they are all children of "pelvis"

"head" links to "left shoulder", which links to "right shoulder" : they are all children of "neck"

Bones

Bone ID overview

HEX	DEC	Bone
00	00	pelvis/none
01	01	left thigh
02	02	left calf
03	03	left foot
04	04	right thigh
05	05	right calf
06	06	right foot
07	07	mid
08	08	chest
09	09	neck
0A	10	head
0B	11	left shoulder
0C	12	left arm
0D	13	left wrist
0E	14	left fist
0F	15	right shoulder
10	16	right arm
11	17	right wrist
12	18	right fist

(Thanks to ZDLO) (and not only him)

Note

"arm" is also sometimes referred to as "bicep"

(although correct spelling is biceps : that's a muscle)

Investigation

There are 2 different TRIA files in Oni. This one, used by most TRCM :

Bone	00	01	02	03	04	05	06	07	08	09	0A	0B	0C	0D	0E	0F	10	11	12
Parent	00	00	01	02	00	04	05	00	07	08	09	09	0B	0C	0D	09	0F	10	10
Child	01	02	03	00	05	06	00	08	09	0A	00	0C	0D	0E	00	10	11	12	00
Sibling	00	04	00	00	07	00	00	00	00	00	0B	0F	00	00	00	00	00	00	00

and this other one, used by extra-low-LOD (i.e. force-shield) TRCM of male scientists :

Bone	00	01	02	03	04	05	06	07	08	09	0A	0B	0C	0D	0E	0F	10	11	12
Parent	00	00	01	02	00	04	05	00	00	00	00	00	00	00	00	00	00	00	00
Child	01	02	03	00	05	06	00	00	09	0A	00	0C	0D	0E	00	10	11	12	00
Sibling	00	04	00	00	07	00	00	00	00	00	0B	0F	00	00	00	00	00	00	00

The "normal" one gives you a normal hierarchy :

0 + 1 - 2 - 3 - X
  + 4 - 5 - 6 - X
  - 7 - 8 - 9 + 10 - X
              + 11 - 12 - 13 - 14 - X
              - 15 - 16 - 17 - 18 - X

While the "low-LOD-doctor" one gives you a weird hierarchy :

0 + 1 - 2 - 3 - X
  + 4 - 5 - 6 - X
  - 7 - X
8 - 9 + 10 - X
      + 11 - 12 - 13 - 14 - X
      - 15 - 16 - 17 - 18 - X

(neglecting the fact that parent links are null for the upper part of the body). It would look like chest is directly parented by the root bone, but then it's not a sibling of pelvis... so it's completely loose.

The associated TRTA is also weird.

• The only difference between the extra-low-LOD and the mormal-LOD TRTA of male scientists is the offset of chest.
• In the normal-LOD TRTA, the offset is (1.4, 0, 0), whereas in the extra-low-LOD TRTA, it is (0, 0, 13.5).
• This again seems to indicate that chest is parented by the root bone if at all...

And indeed...

If you specify e.g. Kerr's TRBS to use nothing but the extra-low-LOD TRCM

(and its TRTA and TRIA, which is the whole point), you'll see weird stuff.

(Kerr's inane upper body floating around, control limited to Kerr's legs and the weapon, if any)

Conclusion

Generally speaking, the TRTA and TRIA of low-LOD TRCM are ignored.

Any body in the TRBS uses the TRTA and TRIA of the extra-high-LOD TRCM

(i.e. the TRCM linked to at 0x18 in the TRBS)

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ONI BINARY DATA
TRGE << Other file types >> TRIG
TRIA : Totoro Quaternion Body Index Array
Character file