Method SaveHeader

Source/Engine/Content/Assets/Animation.cpp:480–536

}

bool Animation::SaveHeader(const ModelData& modelData, WriteStream& stream, int32 animIndex)
{
    // Validate input
    if (animIndex < 0 || animIndex >= modelData.Animations.Count())
    {
        Log::ArgumentOutOfRangeException(TEXT("animIndex"));
        return true;
    }
    auto& anim = modelData.Animations.Get()[animIndex];
    if (anim.Duration <= ZeroTolerance || anim.FramesPerSecond <= ZeroTolerance)
    {
        Log::ArgumentOutOfRangeException(TEXT("Invalid animation duration."));
        return true;
    }
    if (anim.Channels.IsEmpty())
    {
        Log::ArgumentOutOfRangeException(TEXT("Channels"), TEXT("Animation channels collection cannot be empty."));
        return true;
    }

    // Info
    stream.Write(103); // Header version (for fast version upgrades without serialization format change)
    stream.Write(anim.Duration);
    stream.Write(anim.FramesPerSecond);
    stream.Write((byte)anim.RootMotionFlags);
    stream.Write(anim.RootNodeName, 13);

    // Animation channels
    stream.WriteInt32(anim.Channels.Count());
    for (const auto& channel : anim.Channels)
    {
        stream.Write(channel.NodeName, 172);
        Serialization::Serialize(stream, channel.Position);
        Serialization::Serialize(stream, channel.Rotation);
        Serialization::Serialize(stream, channel.Scale);
    }

    // Animation events
    stream.WriteInt32(anim.Events.Count());
    for (auto& e : anim.Events)
    {
        stream.Write(e.First, 172);
        stream.Write(e.Second.GetKeyframes().Count());
        for (const auto& k : e.Second.GetKeyframes())
        {
            stream.Write(k.Time);
            stream.Write(k.Value.Duration);
            stream.Write(k.Value.TypeName, 17);
            stream.WriteJson(k.Value.JsonData);
        }
    }

    // Nested animations
    stream.WriteInt32(0); // Empty list

    return stream.HasError();
}