OBD:TRAM/raw0x34

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<== TRAM - bodypart animation part ==>

Here's the minimal structure of the body animation tracks for a TRAM file (address stored at 0x34 in the dat)

(The example below is for SHINZOMidle1 : those bone tracks are found at 0x480020 in the original level18_Final.raw)

The global stucture is 19 bone tracks, preceded by a list of their offsets (the "header").

Information required to read this part :

• number of body parts (at 0x16A in the dat, always 19 in Oni)
• "compression size" (at 0x160 in the dat, 6 for almost all anims, 16 for a few)
• frame count (at 0x16C in the dat)

The size of a bone track is not known in advance. See "General info" below.

Header

0x00-0x25 : list of the offsets of the 19 bone tracks

Offset	Body part	Raw hex	Value (offset of bone track)
0x00	Pelvis	2600	0x26
0x02	Lt Thigh	3300	0x33
0x04	Lt Calf	4000	0x40
0x06	Lt Foot	4D00	0x4D
0x08	Rt Thigh	5A00	0x5A
0x0A	Rt Calf	6700	0x67
0x0C	Rt Foot	7400	0x74
0x0E	Mid	8100	0x81
0x10	Chest	8E00	0x8E
0x12	Neck	9B00	0x9B
0x14	Head	A800	0xA8
0x16	Lt Shoulder	B500	0xB5
0x18	Lt Arm	C200	0xC2
0x1A	Lt Wrist	CF00	0xCF
0x1C	Lt Fist	DC00	0xDC
0x1E	Rt Shoulder	E900	0xE9
0x20	Rt Arm	F600	0xF6
0x22	Rt Wrist	0301	0x103
0x24	Rt Fist	1001	0x110

Bone tracks

General info

An orientation track is a succession of keyframe fields (either 6 or 16 bytes depending on the "compression size") defining the orientation of a bone (with respect to its parent) at a key moment. Every pair of keyframes is separated by an interval field (one byte) defining the number of frames between the two key moments. Orientation is interpolated linearly between two keyframes over the interval between them. If the cumulated intervals reach the total frame count of the animation (minus 1) then the next keyframe is the final one.

Thus the length of the track is determined upon reading

Compression size 6

correspondence

Angle	Short	Raw hex
0°	0x0000	0x0000
45°	0x2000	0x0020
90°	0x4000	0x0040
180°	0x8000	0x0080
270°	0xC000	0x00C0

An orientation consists of three angles, each of them a 2-byte integer (short). To get the angle in radians one needs to multiply the value with 9.587526e-5 (that is PI / 32767.5). Note that these angles cannot be used directly for interpolation, they must first be converted to quaternions.

The example here is the SHINZOMidle1 animation (10 frames long)

Offset	Body part	Raw hex	from	over	to
0x26	Pelvis	5F45 F93D B6FA 09 5F45 F93D B6FA	(98°, 87°, 353°)	9 frames	(98°, 87°, 353°)
0x33	Lt Thigh	1839 1B34 8877 09 1839 1B34 8877	(80°, 73°, 168°)	9 frames	(80°, 73°, 168°)
0x40	Lt Calf	0000 0000 96AB 09 0000 0000 96AB	(0°, 0°, 241°)	9 frames	(0°, 0°, 241°)
0x4D	Lt Foot	9436 DFFB 3E15 09 9436 DFFB 3E15	(77°, 354°, 30°)	9 frames	(77°, 354°, 30°)
0x5A	Rt Thigh	5351 3D13 DC9C 09 5351 3D13 DC9C	(114°, 27°, 221°)	9 frames	(114°, 27°, 221°)
0x67	Rt Calf	0000 0000 D5E7 09 0000 0000 D5E7	(0°, 0°, 326°)	9 frames	(0°, 0°, 326°)
0x74	Rt Foot	5703 30FA ACF4 09 5703 30FA ACF4	(5°, 352°, 344°)	9 frames	(5°, 352°, 344°)
0x81	Mid	1302 6301 6DFE 09 1302 6301 6DFE	(3°, 2°, 358°)	9 frames	(3°, 2°, 358°)
0x8E	Chest	0402 9F06 7FF4 09 0402 9F06 7FF4	(3°, 9°, 344°)	9 frames	(3°, 9°, 344°)
0x9B	Neck	0000 FEFF 496F 09 0000 FEFF 496F	(0°, 360°, 156°)	9 frames	(0°, 360°, 156°)
0xA8	Head	90FB 2504 639B 09 90FB 2504 639B	(354°, 6°, 219°)	9 frames	(354°, 6°, 219°)
0xB5	Lt Shoulder	6548 B4DF 1677 09 6548 B4DF 1677	(102°, 315°, 167°)	9 frames	(102°, 315°, 167°)
0xC2	Lt Arm	90E2 360D 48E5 09 90E2 360D 48E5	(319°, 19°, 322°)	9 frames	(319°, 19°, 322°)
0xCF	Lt Wrist	0000 0000 D7E4 09 0000 0000 D7E4	(0°, 0°, 322°)	9 frames	(0°, 0°, 322°)
0xDC	Lt Fist	1ABD 51EB D718 09 1ABD 51EB D718	(266°, 331°, 35°)	9 frames	(266°, 331°, 35°)
0xE9	Rt Shoulder	AD8B 592B 0D5E 09 AD8B 592B 0D5E	(196°, 61°, 132°)	9 frames	(196°, 61°, 132°)
0xF6	Rt Arm	2C1C 1116 40D7 09 2C1C 1116 40D7	(40°, 31°, 303°)	9 frames	(40°, 31°, 303°)
0x103	Rt Wrist	0000 0000 1734 09 0000 0000 1734	(0°, 0°, 73°)	9 frames	(0°, 0°, 73°)
0x110	Rt Fist	2341 5404 53EE 09 2341 5404 53EE	(92°, 6°, 335°)	9 frames	(92°, 6°, 335°)

In this example, there are only two keyframes for every bone, and the orientation is identical for both keyframes : in fact, Shinatama remains completely frozen during the whole anim.

Origin and direction of the angles

If the (0°, 0°, 0°) orientation is set for every bone, then all the bones point along the x axis of the character (from right to left) and face upwards

Viewed from above, you get something like this : "o" is a pivot (yeah, the shoulders are attached to the neck); ":)" is a smiley :)

15-o-14-o-13-o-12-o  4-o-3-o-2-o       ^ z
                  |            |       ^
           :)11-o-10-o-9-o-8-o-1  < < <^< < <
                  |            |   x   ^
19-o-18-o-17-o-16-o  7-o-6-o-5-o       ^

Every angle triplet defines the rotation of a bone with respect to its parent (the "parent" of the pelvis lies on its back with its head pointing left, as above...). The orientation of the parent defines an (x,y,z) axis set : assuming the parent is aligned as above, this is simply the normal coordinate system (x=left, y=up, z=front).

The first rotation is about the x axis, the second one is about the new y axis, and the last one is about the newest z axis. All rotations are in the normal trigonometric direction (clockwise if looking in the direction of the axis).

Effectively, the first angle is the "twist" of the bone with respect to its parent (because the direction of the parent is the "x axis", i.e. the axis of the first rotation).

A leg's orientation is quite intuitive : if you set everything to (0°, 0°, 0°) except the orientation of the thighs (both set to (0°, 0°, 180°)), you get "normal" legs. Arms are a bit more complicated.

More, later...

Here is kinda "polished" formula how to get angle in degrees from binary data and vice versa.

X is value from binary in decimal (converted)

α is angle in degrees

α= X*2,4/436,9

X= α*436,9/2,4

Receipt is easy. Get value from binary data and conver it into decimal. this number is X, so use first formula to get angle. Maybe these formulas can be shorted even more, but I think this is both quite nice and accurate. --Loser 21:13, 12 July 2007 (CEST)

Compression size 16

In this case a quaternion (4 float values) is stored instead of 3 angles. It applies to the following original anims :

KONOKO/STRIKE KONOKO bullet_chest1 bullet_chest2 bullet_chest3 shot_small

KON/COM/NIN PIS/RIF holster

KONOKO/COMGUY/NINJA KONCOM/COMCOM/NINCOM draw_ pis/rif

KON/STR/NIN COM PIS recoil_ reload_ autopistol p_stream vandergraf autopis_o stream_o vdgf_o autopis_o

KON/STR/NIN COM RIF recoil_ reload_ phase_rif superball scram mercury screamer rifle_o super_o scram_o merc_o scream_o scream_o

KON/STR COM/NIN KON/STR NIN STR COM NIN KON/STR NIN STR NIN PIS/RIF RIF PIS stand crouch run prone crouch_r ss_lt ss_rt run_bk _fire_arc

KONOKO TANPIS KONCOM STRIKE REDCOM MURCOM crouch stand _fire_arc

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<== TRAM - bodypart animation part ==>

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