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Read keyframes from animation data

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This commit is contained in:
Ammar Askar 2023-08-13 00:14:59 -04:00
parent 835df69750
commit eff377ac14
1 changed files with 210 additions and 14 deletions
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224
Assets/Scripts/OpenTS2/Files/Formats/DBPF/Scenegraph/Block/AnimResourceConstBlock.cs
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@ -1,4 +1,5 @@
using OpenTS2.Files.Utils;
using System;
using OpenTS2.Files.Utils;
using UnityEngine;
namespace OpenTS2.Files.Formats.DBPF.Scenegraph.Block
@ -27,6 +28,163 @@ namespace OpenTS2.Files.Formats.DBPF.Scenegraph.Block
public uint BoneHash;
public uint ChannelFlags;
public ChannelComponent[] Components;
}
/// <summary>
/// This is where the actual animation keyframes live. Each animation channel can have multiple of these.
/// </summary>
public class ChannelComponent
{
public DataType Type;
public CurveType TangentCurveType;
public int NumKeyFrames;
public IKeyFrame[] KeyFrames;
internal void ReadKeyFrames(IoBuffer reader)
{
KeyFrames = new IKeyFrame[NumKeyFrames];
for (var i = 0; i < NumKeyFrames; i++)
{
if (TangentCurveType == CurveType.BakedTangents)
{
var keyframe = new IKeyFrame.BakedKeyFrame();
KeyFrames[i] = keyframe;
var data = 0.0f;
if (Type == DataType.FloatingPoint32)
{
keyframe.Data = reader.ReadFloat();
}
else
{
// TODO: convert from fixed point to floating point here.
reader.ReadUInt16();
}
} else if (TangentCurveType == CurveType.ContinuousTangents)
{
var keyframe = new IKeyFrame.ContinuousKeyFrame();
KeyFrames[i] = keyframe;
keyframe.Short1 = reader.ReadUInt16();
if (Type == DataType.FloatingPoint32)
{
keyframe.Data = reader.ReadFloat();
}
else
{
// TODO: convert from fixed point to floating point here.
reader.ReadUInt16();
}
keyframe.Short2 = reader.ReadInt16();
} else if (TangentCurveType == CurveType.DiscontinuousTangents)
{
var keyframe = new IKeyFrame.DiscontinuousKeyFrame();
KeyFrames[i] = keyframe;
keyframe.Short1 = reader.ReadUInt16();
if (Type == DataType.FloatingPoint32)
{
keyframe.Data = reader.ReadFloat();
}
else
{
// TODO: convert from fixed point to floating point here.
reader.ReadUInt16();
}
keyframe.Short2 = reader.ReadInt16();
keyframe.Short3 = reader.ReadInt16();
}
}
}
public enum CurveType
{
BakedTangents = 0,
ContinuousTangents = 1,
DiscontinuousTangents = 2,
}
public static CurveType ChannelCurveTypeFromPackedByte(byte packedByte)
{
if (!Enum.IsDefined(typeof(CurveType), packedByte & 0b11))
{
throw new ArgumentException($"Invalid curve type: {packedByte & 0b11}");
}
return (CurveType)(packedByte & 0b11);
}
public enum DataType
{
/// 8.7 fixed point
FixedPoint8_7,
/// 9.7 fixed point
FixedPoint9_7,
/// 5.10 Fixed point
FixedPoint5_10,
/// 5.11 fixed point
FixedPoint5_11,
/// 3.12 fixed point
FixedPoint3_12,
/// 3.13 fixed point
FixedPoint3_13,
/// plain floats.
FloatingPoint32,
}
public static DataType ChannelDataTypeFromSerializedPackedByte(byte packedByte) {
// 5th bit set is float.
if ((packedByte & 0b10000) != 0)
{
return DataType.FloatingPoint32;
}
// Next check the top 3 (out of 5) bits and the curve type.
var topThreeBits = (packedByte >> 2 & 0b111);
var curveType = ChannelCurveTypeFromPackedByte(packedByte);
return topThreeBits switch
{
0b000 when curveType == CurveType.BakedTangents => DataType.FixedPoint8_7,
0b000 => DataType.FixedPoint9_7,
0b001 when curveType == CurveType.BakedTangents => DataType.FixedPoint5_10,
0b001 => DataType.FixedPoint5_11,
0b011 when curveType == CurveType.BakedTangents => DataType.FixedPoint3_12,
0b011 => DataType.FixedPoint3_13,
_ => throw new ArgumentException($"Invalid data type: {packedByte}")
};
}
}
}
public interface IKeyFrame
{
public struct BakedKeyFrame : IKeyFrame
{
public float Data;
}
public struct ContinuousKeyFrame : IKeyFrame
{
public ushort Short1;
public float Data;
public short Short2;
}
public struct DiscontinuousKeyFrame : IKeyFrame
{
public ushort Short1;
public float Data;
public short Short2;
public short Short3;
}
}
@ -64,8 +222,7 @@ namespace OpenTS2.Files.Formats.DBPF.Scenegraph.Block
var preStretchFactor = reader.ReadFloat();
var rootStretchDisplacement = reader.ReadFloat();
// We need to note the stream position here because the rest of the data is aligned on 4-byte boundaries
// sometimes.
// We need to note the stream position here because string data is aligned on 4-byte boundaries sometimes.
var initialStreamPosition = reader.Stream.Position;
var skeletonTag = reader.ReadNullTerminatedString();
@ -95,11 +252,12 @@ namespace OpenTS2.Files.Formats.DBPF.Scenegraph.Block
reader.ReadBytes(4 * 3);
}
// Another aligned section... the names of each animation target's targetted tag.
initialStreamPosition = reader.Stream.Position;
for (var i = 0; i < numAnimTargets; i++)
{
animTargets[i].TagName = reader.ReadNullTerminatedString();
}
ReadPadding(reader, reader.Stream.Position - initialStreamPosition);
for (var i = 0; i < numAnimTargets; i++)
@ -116,9 +274,19 @@ namespace OpenTS2.Files.Formats.DBPF.Scenegraph.Block
reader.ReadUInt32(); // 1 ignored uint32.
channel.ChannelFlags = reader.ReadUInt32();
reader.ReadUInt32(); // 1 ignored uint32.
// Channel types and their order:
// ChannelTypeF1
// ChannelTypeF3
// ChannelTypeF4
// ChannelTypeQ
// ChannelTypeXYZ
// ChannelTypeF2
}
}
// Another aligned section... the names of each of the animation channels.
initialStreamPosition = reader.Stream.Position;
for (var i = 0; i < numAnimTargets; i++)
{
var target = animTargets[i];
@ -127,22 +295,41 @@ namespace OpenTS2.Files.Formats.DBPF.Scenegraph.Block
target.Channels[j].ChannelName = reader.ReadNullTerminatedString();
}
}
ReadPadding(reader, reader.Stream.Position - initialStreamPosition);
for (var i = 0; i < numAnimTargets; i++)
// Next up the number of animation components in each channel and its keyframe types.
foreach (var target in animTargets)
{
var target = animTargets[i];
for (var j = 0; j < target.NumSharedChannels; j++)
foreach (var channel in target.Channels)
{
var numComponents = (target.Channels[j].ChannelFlags >> 5) & 0b111;
var numComponents = (channel.ChannelFlags >> 5) & 0b111;
channel.Components = new AnimResourceConstBlock.ChannelComponent[numComponents];
for (var k = 0; k < numComponents; k++)
{
// The exact format here depends on some flags...
// for now this is just from the wiki.
reader.ReadUInt16();
reader.ReadInt16();
reader.ReadUInt32();
var component = new AnimResourceConstBlock.ChannelComponent();
channel.Components[k] = component;
component.NumKeyFrames = reader.ReadUInt16();
var dataType = reader.ReadByte();
reader.ReadBytes(1 + 4); // 1 ignored byte and 1 ignored uint32.
component.Type =
AnimResourceConstBlock.ChannelComponent.ChannelDataTypeFromSerializedPackedByte(dataType);
component.TangentCurveType =
AnimResourceConstBlock.ChannelComponent.ChannelCurveTypeFromPackedByte(dataType);
}
}
}
// Now the actual keyframe data.
foreach (var target in animTargets)
{
foreach (var channel in target.Channels)
{
foreach (var component in channel.Components)
{
component.ReadKeyFrames(reader);
}
}
}
@ -153,6 +340,15 @@ namespace OpenTS2.Files.Formats.DBPF.Scenegraph.Block
foreach (var channel in target.Channels)
{
Debug.Log($" name: {channel.ChannelName}, bonehash: {channel.BoneHash:X}");
foreach (var component in channel.Components)
{
Debug.Log($" numKeyFrames: {component.NumKeyFrames}, type: {component.Type}, tangentType: {component.TangentCurveType}");
foreach (var keyframe in component.KeyFrames)
{
Debug.Log($" {keyframe.GetType()}");
}
}
}
}