static AnimationHeader GetAnimationHeader(ByteChunk chunk)
{
if (chunk.BytesLeft == 0)
{
throw new Exception("Trying to load animation header with no data, chunk size = 0");
}
var header = new AnimationHeader();
header.AnimationType = chunk.ReadUInt32();
header.Unknown0_alwaysOne = chunk.ReadUInt32(); // Always 1?
header.FrameRate = chunk.ReadSingle();
var nameLength = chunk.ReadShort();
header.SkeletonName = chunk.ReadFixedLength(nameLength);
header.Unknown1_alwaysZero = chunk.ReadUInt32(); // Always 0? padding?
if (header.AnimationType == 7)
{
header.AnimationTotalPlayTimeInSec = chunk.ReadSingle(); // Play time
}
bool isSupportedAnimationFile = header.AnimationType == 5 || header.AnimationType == 6 || header.AnimationType == 7;
if (!isSupportedAnimationFile)
{
throw new Exception($"Unsuported animation format: {header.AnimationType}");
}
return(header);
}
static Frame ReadFrame(ByteChunk chunk, uint positions, uint rotations)
{
var frame = new Frame();
for (int j = 0; j < positions; j++)
{
var vector = new RmvVector3(chunk.ReadSingle(), chunk.ReadSingle(), chunk.ReadSingle());
frame.Transforms.Add(vector);
}
for (int j = 0; j < rotations; j++)
{
var maxValue = 1.0f / (float)short.MaxValue;
var quat = new short[4] {
chunk.ReadShort(), chunk.ReadShort(), chunk.ReadShort(), chunk.ReadShort()
};
var quaternion = new RmvVector4(quat[0] * maxValue, quat[1] * maxValue, quat[2] * maxValue, quat[3] * maxValue);
frame.Quaternion.Add(quaternion);
}
return(frame);
}
public AnimationBinEntry(ByteChunk data)
{
Name = data.ReadString();
SkeletonName = data.ReadString();
MountName = data.ReadString();
var count = data.ReadInt32();
for (int i = 0; i < count; i++)
{
FragmentReferences.Add(new FragmentReference(data));
}
Unknown = data.ReadShort();
}
public static AnimationFile Create(ByteChunk chunk)
{
if (chunk.BytesLeft == 0)
{
throw new Exception("Trying to load animation with no data, chunk size = 0");
}
var output = new AnimationFile();
chunk.Reset();
output.Header = GetAnimationHeader(chunk);
var boneCount = chunk.ReadUInt32();
output.Bones = new BoneInfo[boneCount];
for (int i = 0; i < boneCount; i++)
{
var boneNameSize = chunk.ReadShort();
output.Bones[i] = new BoneInfo()
{
Name = chunk.ReadFixedLength(boneNameSize),
ParentId = chunk.ReadInt32(),
Id = i
};
}
// Remapping tables, not sure how they really should be used, but this works.
for (int i = 0; i < boneCount; i++)
{
int mappingValue = chunk.ReadInt32();
output.TranslationMappings.Add(new AnimationBoneMapping(mappingValue));
}
for (int i = 0; i < boneCount; i++)
{
int mappingValue = chunk.ReadInt32();
output.RotationMappings.Add(new AnimationBoneMapping(mappingValue));
}
// A single static frame - Can be inverse, a pose or empty. Not sure? Hand animations are stored here
if (output.Header.AnimationType == 7)
{
var staticPosCount = chunk.ReadUInt32();
var staticRotCount = chunk.ReadUInt32();
if (staticPosCount != 0 || staticRotCount != 0)
{
output.StaticFrame = ReadFrame(chunk, staticPosCount, staticRotCount);
}
}
// Animation Data
var animPosCount = chunk.ReadInt32();
var animRotCount = chunk.ReadInt32();
var frameCount = chunk.ReadInt32(); // Always 3 when there is no data? Why?
if (animPosCount != 0 || animRotCount != 0)
{
for (int i = 0; i < frameCount; i++)
{
var frame = ReadFrame(chunk, (uint)animPosCount, (uint)animRotCount);
output.DynamicFrames.Add(frame);
}
}
// ----------------------
return(output);
}
