Method load

Source/Engine/Particles/ParticleSystem.cpp:204–311

#endif

Asset::LoadResult ParticleSystem::load()
{
    PROFILE_MEM(Particles);
    Version++;

    // Get the data chunk
    if (LoadChunk(0))
        return LoadResult::CannotLoadData;
    const auto chunk0 = GetChunk(0);
    if (chunk0 == nullptr || chunk0->IsMissing())
        return LoadResult::MissingDataChunk;
    MemoryReadStream stream(chunk0->Data.Get(), chunk0->Data.Length());

    int32 version;
    stream.Read(version);
#if USE_EDITOR
    // Skip unused parameters
#define SKIP_UNUSED_PARAM_OVERRIDE() if (key.First < 0 || key.First >= Emitters.Count() || Emitters[key.First] == nullptr || Emitters[key.First]->Graph.GetParameter(key.Second) == nullptr) continue
#else
#define SKIP_UNUSED_PARAM_OVERRIDE()
#endif
    switch (version)
    {
    case 3: // [Deprecated on 03.09.2021 expires on 03.09.2023]
        MARK_CONTENT_DEPRECATED();
    case 4:
    {
        // Load properties
        stream.ReadFloat(&FramesPerSecond);
        stream.ReadInt32(&DurationFrames);

        // Load emitters
        int32 emittersCount;
        stream.ReadInt32(&emittersCount);
        Emitters.Resize(emittersCount, false);

        // Load tracks
        Guid id;
        int32 tracksCount;
        stream.ReadInt32(&tracksCount);
        Tracks.Resize(tracksCount, false);
        for (int32 i = 0; i < tracksCount; i++)
        {
            auto& track = Tracks[i];

            track.Type = (Track::Types)stream.ReadByte();
            track.Flag = (Track::Flags)stream.ReadByte();
            stream.ReadInt32(&track.ParentIndex);
            stream.ReadInt32(&track.ChildrenCount);
            stream.Read(track.Name, -13);
            track.Disabled = (int32)track.Flag & (int32)Track::Flags::Mute || (track.ParentIndex != -1 && Tracks[track.ParentIndex].Disabled);
            stream.Read(track.Color);

            switch (track.Type)
            {
            case Track::Types::Emitter:
                stream.Read(id);
                stream.ReadInt32(&track.AsEmitter.Index);