by Maki file is different than field [ONE and then again with argument 0x12 having pointer to data as in Wiki in EAX. It’s like:

uint myPointer = charaOneFunction(pointer_to_Chara_section, 0x11...);
charaOneFunction(myPointer, 0x12...);

Offset Length Description
0x00 uint EOF
0x04 (TIM_height * (TIM_width * 4) ) / 2 + 64 TIM texture
*(this) != x 10 00 00 00 08 00 00 00 Varies Chara

Chara

Always 64 bytes length!

UPDATE: Looks like it’s 1:1 to MCH: http://wiki.ffrtt.ru/index.php/FF8/FileFormat_MCH#Model-Data

Offset Length Description
0x00 uint BoneSectionLength
0x04 uint unknown struct size. Multiply by 8
0x08 uint unknown size
0x0C uint count (used as controller local var)
0x10 uint unknown
0x14 uint unknown
0x18 uint unknown
0x1C uint unknown
0x20 uint unknown
0x24 uint unknown
0x28 uint unknown
0x2C uint unknown
0x30 uint unknown
0x24 uint unknown
0x38 uint Animation section pointer (0x12)
0x3C uint unknown
0x40 BoneSectionLength<<6 BoneSection

Animation section (arg4

0x12) ==

Offset Length Description
0x00 ushort countOfAnimations
0x02 + ( entry.Length != 0 ? sizeof(entry[i-1] : 0) sizeof(this) Animation

Animation:

Offset Length Description
0x00 ushort count of animation keypoints
0x02 ushort count of bones translation frames
0x04 + (entityID * (countOfBoneRot * 6) + 6) 6 + (countOfBoneRotations*6) AnimationKeypoint

AnimationKeypoint:

Offset Length Description
0x00 short origin X offset
0x02 short origin Z offset
0x04 short origin Y (up) offset
0x06 + (boneID*6) short Bone[boneID].RotX
0x08 + (boneID*6) short Bone[boneID].RotZ
0x0A + (boneID*6) short Bone[boneID].RotY

Case study: First character is Squall in chara.one. Two TIM 8BPP textures. Squall has 8 animations. First animation has one keypoint with 16 bone translations. When moving it plays 2nd animation and has 0x14 keypoints which every have 0x10 bone translations. You can edit origin XYZ offsets for every frame. Due to they way the file is constructed it’s not so easy to actually test play other animations.

source

Example C# source of file parsing as in OpenVIII (commit from 16/02/1019): https://github.com/MaKiPL/OpenVIII/blob/db46297fbc7961852e89427927df2e40623266a5/FF8/module_world_debug.cs#L202

private static void ReadCharaOne(byte[] charaOneB)
       {
           using (MemoryStream ms = new MemoryStream(charaOneB))
           using (BinaryReader br = new BinaryReader(ms))
           {
               uint eof = br.ReadUInt32();
               TIM2 tim;
               while (ms.CanRead)
                   if (BitConverter.ToUInt16(charaOneB, (int)ms.Position) == 0)
                       ms.Seek(2, SeekOrigin.Current);
                   else if (br.ReadUInt64() == 0x0000000800000010)
                   {
                       ms.Seek(-8, SeekOrigin.Current);
                       tim = new TIM2(charaOneB, (uint)ms.Position);
                       ms.Seek(tim.GetHeight * tim.GetWidth / 2 + 64, SeekOrigin.Current); //i.e. 64*20=1280/2=640 + 64= 704 + eof
                       if (charaOneTextures == null)
                           charaOneTextures = new List<Texture2D[]>();
                       charaOneTextures.Add(new Texture2D[1] { new Texture2D(Memory.graphics.GraphicsDevice, tim.GetWidth, tim.GetHeight, false, SurfaceFormat.Color) });
                       charaOneTextures.Last()[0].SetData(tim.CreateImageBuffer(tim.GetClutColors(0), true));
                   }
                   else //is geometry structure
                   {
                       ms.Seek(-8, SeekOrigin.Current);
                       uint esi10h = BitConverter.ToUInt32(charaOneB, (int)ms.Position + 0x10);
                       uint esi14h = BitConverter.ToUInt32(charaOneB, (int)ms.Position + 0x14);
                       uint u45 = BitConverter.ToUInt32(charaOneB, (int)ms.Position + 56); //+2?
                       uint v29 = BitConverter.ToUInt32(charaOneB, (int)ms.Position) << 6; //bone section?
                       uint d250516c = BitConverter.ToUInt32(charaOneB, (int)ms.Position + 4) * 8; //unk?
                       uint v25 = BitConverter.ToUInt32(charaOneB, (int)ms.Position + 8); //unk size?
                       ms.Seek(u45, SeekOrigin.Current);
                       if (ms.Position > ms.Length)
                           break;
                       ushort countIs = br.ReadUInt16();
                       ushort cEntries = 0;
                       while (countIs != 0/*(cEntries = br.ReadUInt16()) != 0*/)
                       {
                           cEntries = br.ReadUInt16();
                           ushort cBones = br.ReadUInt16();
                           while (cEntries != 0)
                           {
                               Bone testBone = new Bone() { X = br.ReadInt16(), Y = br.ReadInt16(), Z = br.ReadInt16() };
                               Vector3[] myVec = new Vector3[cBones];
                               for (int i = 0; i < cBones; i++)
                                   myVec[i] = new Vector3() { X = br.ReadInt16(), Y = br.ReadUInt16(), Z = br.ReadUInt16() };
                               cEntries--;
                           }
                           countIs--;
                       }
                   }
               return;
           }
}