anim format exploration, few todos

overtools · Mar 16, 2023 · 27bd86b · 27bd86b
1 parent cb29af8
commit 27bd86b
Showing 1 changed file with 21 additions and 5 deletions.
diff --git a/TankLib/teAnimation.cs b/TankLib/teAnimation.cs
@@ -8,6 +8,17 @@
 namespace TankLib {
  /// <summary>Tank Animation, type 006</summary>
  public class teAnimation {
+ [Flags]
+ public enum AnimFlags : ushort {
+ // todo
+ }
+
+ [Flags]
+ public enum InfoTableFlags : ushort {
+ // todo
+ LegacyPositionFormat = 0x200,
+ }
+
  /// <summary>Animation header</summary>
  [StructLayout(LayoutKind.Sequential, Pack = 4)]
  public struct AnimHeader {
@@ -20,7 +31,7 @@ public struct AnimHeader {
  public ushort BoneCount;
 
  /// <summary>Unknown flags</summary>
- public ushort Flags;
+ public AnimFlags Flags;
 
  public ushort Unknown1;
 
@@ -82,7 +93,7 @@ public struct InfoTable {
  public ushort RotationCount;
 
  /// <summary>Unknown flags</summary>
- public ushort Flags;
+ public InfoTableFlags Flags;
 
  /// <summary>Offset to scale indices</summary>
  public int ScaleIndicesOffset;
@@ -145,6 +156,8 @@ public class BoneAnimation {
  InfoTables = new InfoTable[Header.BoneCount];
  BoneAnimations = new BoneAnimation[Header.BoneCount];
 
+ // todo: read data for non-bone animations
+
  for (int boneIndex = 0; boneIndex < Header.BoneCount; boneIndex++) {
  long streamPos = reader.BaseStream.Position;
  InfoTable infoTable = reader.Read<InfoTable>();
@@ -177,7 +190,7 @@ public class BoneAnimation {
  }
 
  reader.BaseStream.Position = positionDataPos;
- bool useNewFormat = (infoTable.Flags & 512) == 0; // If this flag isn't set, use the new 10 bytes format, otherwise use the 12 bytes one
+ bool useNewFormat = (infoTable.Flags & InfoTableFlags.LegacyPositionFormat) == 0; // If this flag isn't set, use the new 10 bytes format, otherwise use the 12 bytes one
  for (int j = 0; j < infoTable.PositionCount; j++) {
  int frame = System.Math.Abs(positionIndices[j]) % InfoTableSize;
  boneAnimation.Positions[frame] = ReadPosition(reader, useNewFormat);
@@ -218,8 +231,11 @@ public class BoneAnimation {
  float y = (float) reader.ReadHalf();
  float z = (float) reader.ReadHalf();
 
- // 32bits value here, tried float, int32, 2x halfs, 2x int16, 4x byte, didn't find anything that would make sense
- float unknown = (float) reader.ReadSingle();
+ uint packedData = reader.ReadUInt32();
+ // var unkX = packedData & 0x3FF;
+ // var unkY = (packedData >> 10) & 0x3FF; // <-- sometimes this value changes with no changes to any component. a single bit gets flipped.
+ // var unkZ = (packedData >> 20) & 0x3FF; // <-- changes wildly, indicating that my bit shifting/masking is wrong
+ // var unk = packedData >> 30; // ????
 
  return new teVec3(x / 32f, y / 32f, z / 32f);
  } else {