/// <summary>
/// Reads the data from a compressed track
/// </summary>
/// <param name="reader"></param>
/// <param name="flags"></param>
/// <returns></returns>
private object[] ReadCompressed(SsbhParser reader, uint flags)
{
List <object> output = new List <object>();
uint dataOffset = (uint)reader.BaseStream.Position;
SsbhAnimCompressedHeader header = reader.ByteToType <SsbhAnimCompressedHeader>();
if (CheckFlag(flags, 0x00FF, AnimTrackFlags.Boolean))
{
ReadBooleans(reader, output, dataOffset, header);
}
if (CheckFlag(flags, 0x00FF, AnimTrackFlags.Texture))
{
// TODO: What type is this
}
if (CheckFlag(flags, 0x00FF, AnimTrackFlags.Float))
{
//TODO: What type is this
}
if (CheckFlag(flags, 0x00FF, AnimTrackFlags.PatternIndex))
{
//TODO: What type is this
}
if (CheckFlag(flags, 0x00FF, AnimTrackFlags.Vector4))
{
ReadVector4(reader, output, dataOffset, header);
}
if (CheckFlag(flags, 0x00FF, AnimTrackFlags.Transform))
{
ReadTransform(reader, output, dataOffset, header);
}
return(output.ToArray());
}
/// <summary>
/// Decompresses values in a track
/// </summary>
/// <param name="parser"></param>
/// <param name="dataOffset"></param>
/// <param name="header"></param>
/// <param name="valueCount"></param>
/// <returns></returns>
private List <float[]> DecompressValues(SsbhParser parser, uint dataOffset, SsbhAnimCompressedHeader header, int valueCount)
{
List <float[]> transforms = new List <float[]>(header.FrameCount);
// PreProcess
SsbhAnimCompressedItem[] items = parser.ByteToType <SsbhAnimCompressedItem>(valueCount);
parser.Seek(dataOffset + header.DefaultDataOffset);
float[] defaultValues = GetDefaultValues(parser, valueCount);
parser.Seek(dataOffset + header.CompressedDataOffset);
for (int frameIndex = 0; frameIndex < header.FrameCount; frameIndex++)
{
// Copy default values.
float[] values = new float[valueCount];
for (int i = 0; i < valueCount; i++)
{
values[i] = defaultValues[i];
}
for (int itemIndex = 0; itemIndex < items.Length; itemIndex++)
{
var item = items[itemIndex];
// Decompress
int valueBitCount = (int)item.Count;
if (valueBitCount == 0)
{
continue;
}
int value = parser.ReadBits(valueBitCount);
int scale = 0;
for (int k = 0; k < valueBitCount; k++)
{
scale |= 0x1 << k;
}
float frameValue = Lerp(item.Start, item.End, 0, 1, value / (float)scale);
if (float.IsNaN(frameValue))
{
frameValue = 0;
}
values[itemIndex] = frameValue;
}
transforms.Add(values);
}
return(transforms);
}
/// <summary>
/// decompresses transform values from a track
/// </summary>
/// <param name="parser"></param>
/// <param name="dataOffset"></param>
/// <param name="header"></param>
/// <returns></returns>
private AnimTrackTransform[] DecompressTransform(SsbhParser parser, uint dataOffset, SsbhAnimCompressedHeader header)
{
AnimTrackTransform[] transforms = new AnimTrackTransform[header.FrameCount];
// PreProcess
SsbhAnimCompressedItem[] items = parser.ByteToType <SsbhAnimCompressedItem>(9);
parser.Seek(dataOffset + header.DefaultDataOffset);
float xsca = parser.ReadSingle();
float ysca = parser.ReadSingle();
float zsca = parser.ReadSingle();
float xrot = parser.ReadSingle();
float yrot = parser.ReadSingle();
float zrot = parser.ReadSingle();
float wrot = parser.ReadSingle();
float xpos = parser.ReadSingle();
float ypos = parser.ReadSingle();
float zpos = parser.ReadSingle();
float csca = parser.ReadSingle();
parser.Seek(dataOffset + header.CompressedDataOffset);
for (int frame = 0; frame < header.FrameCount; frame++)
{
AnimTrackTransform transform = new AnimTrackTransform()
{
X = xpos,
Y = ypos,
Z = zpos,
Rx = xrot,
Ry = yrot,
Rz = zrot,
Rw = wrot,
Sx = xsca,
Sy = ysca,
Sz = zsca,
CompensateScale = csca
};
for (int itemIndex = 0; itemIndex < items.Length; itemIndex++)
{
// First check if this track should be parsed
// TODO: Don't hard code these flags.
if (!((itemIndex == 0 && (header.Flags & 0x3) == 0x3) || //isotropic scale
(itemIndex >= 0 && itemIndex <= 2 && (header.Flags & 0x3) == 0x1) || //normal scale
(itemIndex > 2 && itemIndex <= 5 && (header.Flags & 0x4) > 0) ||
(itemIndex > 5 && itemIndex <= 8 && (header.Flags & 0x8) > 0)))
{
continue;
}
var item = items[itemIndex];
// Decompress
int valueBitCount = (int)item.Count;
if (valueBitCount == 0)
{
continue;
}
int value = parser.ReadBits(valueBitCount);
int scale = 0;
for (int k = 0; k < valueBitCount; k++)
{
scale |= 0x1 << k;
}
float frameValue = Lerp(item.Start, item.End, 0, 1, value / (float)scale);
if (float.IsNaN(frameValue))
{
frameValue = 0;
}
// the Transform type relies a lot on flags
if ((header.Flags & 0x3) == 0x3)
{
//Scale Compensate
if (itemIndex == 0)
{
transform.CompensateScale = frameValue;
}
}
if ((header.Flags & 0x3) == 0x1)
{
//Scale normal
switch (itemIndex)
{
case 0:
transform.Sx = frameValue;
break;
case 1:
transform.Sy = frameValue;
break;
case 2:
transform.Sz = frameValue;
break;
}
}
//Rotation and Position
switch (itemIndex)
{
case 3:
transform.Rx = frameValue;
break;
case 4:
transform.Ry = frameValue;
break;
case 5:
transform.Rz = frameValue;
break;
case 6:
transform.X = frameValue;
break;
case 7:
transform.Y = frameValue;
break;
case 8:
transform.Z = frameValue;
break;
}
}
// Rotations have an extra bit at the end
if ((header.Flags & 0x4) > 0)
{
bool wFlip = parser.ReadBits(1) == 1;
// W is calculated
transform.Rw = (float)Math.Sqrt(Math.Abs(1 - (transform.Rx * transform.Rx + transform.Ry * transform.Ry + transform.Rz * transform.Rz)));
if (wFlip)
{
transform.Rw = -transform.Rw;
}
}
transforms[frame] = transform;
}
return(transforms);
}
private static void ReadBooleans(SsbhParser reader, List <object> output, uint dataOffset, SsbhAnimCompressedHeader header)
{
reader.Seek((int)dataOffset + header.CompressedDataOffset);
// note: there is a section for "default" and "compressed items" but they seem to always be 0-ed out
for (int i = 0; i < header.FrameCount; i++)
{
output.Add(reader.ReadBits(header.BitsPerEntry) == 1);
}
}
private void ReadVector4(SsbhParser reader, List <object> output, uint dataOffset, SsbhAnimCompressedHeader header)
{
var decompressed = DecompressValues(reader, dataOffset, header, 4);
foreach (var decom in decompressed)
{
output.Add(new AnimTrackCustomVector4(decom[0], decom[1], decom[2], decom[3]));
}
}
private void ReadTransform(SsbhParser reader, List <object> output, uint dataOffset, SsbhAnimCompressedHeader header)
{
var decompressed = DecompressTransform(reader, dataOffset, header);
foreach (var v in decompressed)
{
output.Add(v);
}
}
