Mine

    public struct UnitAny
    {
        [FieldOffset(0)]    public uint dwType;
        [FieldOffset(4)]    public uint dwTxtFileNo;
        [FieldOffset(8)]    public uint _1;
        [FieldOffset(0x0c)] public uint dwUnitId;
        [FieldOffset(0x10)] public uint dwMode;

        // first union
        [FieldOffset(0x14)] public IntPtr ptrPlayerData;
        [FieldOffset(0x14)] public IntPtr ptrItemData;
        [FieldOffset(0x14)] public IntPtr ptrMonsterData;
        [FieldOffset(0x14)] public IntPtr ptrObjectData;

        [FieldOffset(0x18)] public uint dwAct;
        [FieldOffset(0x1c)] public IntPtr ptrAct;
        [FieldOffset(0x20)] [MarshalAs(UnmanagedType.ByValArray, SizeConst=2)]  public uint[] dwSeed;
        [FieldOffset(0x28)] public uint _2;

        // second union
        [FieldOffset(0x2c)] public IntPtr ptrPath;
        [FieldOffset(0x2c)] public IntPtr ptrItemPath;
        [FieldOffset(0x2c)] public IntPtr ptrObjectPath;

        [FieldOffset(0x30)] [MarshalAs(UnmanagedType.ByValArray, SizeConst=5)]  public uint[] _3;
        [FieldOffset(0x44)] public uint dwGfxFrame;
        [FieldOffset(0x48)] public uint dwFrameRemain;
        [FieldOffset(0x4c)] public ushort wFrameRate;
        [FieldOffset(0x4e)] public ushort _4;
        [FieldOffset(0x50)] public IntPtr ptrGfxUnk;
        [FieldOffset(0x54)] public IntPtr ptrGfxInfo;
        [FieldOffset(0x58)] public uint _5;
        [FieldOffset(0x5c)] public IntPtr ptrStats;
        [FieldOffset(0x60)] public IntPtr ptrInventory;
        [FieldOffset(0x64)] public IntPtr ptrtLight;
        [FieldOffset(0x68)] [MarshalAs(UnmanagedType.ByValArray, SizeConst=9)]  public uint[] _6;

        [FieldOffset(0x8c)] public ushort wX;
        [FieldOffset(0x8e)] public ushort wY;

        [FieldOffset(0x90)] public uint _7;

        [FieldOffset(0x94)] public uint dwOwnerType;
        [FieldOffset(0x98)] public uint dwOwnerId;

        [FieldOffset(0x9c)] [MarshalAs(UnmanagedType.ByValArray, SizeConst=3)]  public uint[] _8;

        [FieldOffset(0xa8)] public IntPtr ptrInfo;

        [FieldOffset(0xac)] [MarshalAs(UnmanagedType.ByValArray, SizeConst=6)]  public uint[] _9;

        [FieldOffset(0xc4)] public uint dwFlags;
        [FieldOffset(0xc8)] public uint dwFlags2;

        [FieldOffset(0xcc)] [MarshalAs(UnmanagedType.ByValArray, SizeConst=5)]  public uint[] _10;

        [FieldOffset(0xe0)] public IntPtr ptrChangedNext;
        [FieldOffset(0xe4)] public IntPtr ptrRoomNext;
        [FieldOffset(0xe8)] public IntPtr ptrListNext;