/// <summary>
/// Initializes a new instance of the <see cref="ParticleSystemTimeline"/> class.
/// </summary>
/// <param name="preview">The particle system preview.</param>
public ParticleSystemTimeline(ParticleSystemPreview preview)
: base(PlaybackButtons.Play | PlaybackButtons.Stop)
{
PlaybackState = PlaybackStates.Playing;
PropertiesEditObject = new Proxy(this);
_preview = preview;
// Setup track types
TrackArchetypes.Add(ParticleEmitterTrack.GetArchetype());
TrackArchetypes.Add(FolderTrack.GetArchetype());
}
/// <summary>
/// Loads the timeline from the specified data.
/// </summary>
/// <param name="data">The data.</param>
public void Load(byte[] data)
{
Clear();
using (var memory = new MemoryStream(data))
using (var stream = new BinaryReader(memory))
{
// Load properties
int version = stream.ReadInt32();
if (version != 1)
{
throw new Exception("Unknown particle timeline version " + version);
}
FramesPerSecond = stream.ReadSingle();
DurationFrames = stream.ReadInt32();
// Load emitters
int emittersCount = stream.ReadInt32();
// Load tracks
int tracksCount = stream.ReadInt32();
_tracks.Capacity = Math.Max(_tracks.Capacity, tracksCount);
for (int i = 0; i < tracksCount; i++)
{
var type = stream.ReadByte();
var flag = stream.ReadByte();
Track track;
var mute = (flag & 1) == 1;
switch (type)
{
// Emitter
case 0:
{
track = new ParticleEmitterTrack(TrackArchetypes[1], mute);
break;
}
// Folder
case 1:
{
track = new FolderTrack(TrackArchetypes[0], mute);
break;
}
default: throw new Exception("Unknown Particle System track type " + type);
}
int parentIndex = stream.ReadInt32();
int childrenCount = stream.ReadInt32();
track.Name = Utilities.Utils.ReadStr(stream, -13);
track.Tag = parentIndex;
switch (type)
{
// Emitter
case 0:
{
var e = (ParticleEmitterTrack)track;
Guid id = new Guid(stream.ReadBytes(16));
e.Emitter = FlaxEngine.Content.LoadAsync <ParticleEmitter>(ref id);
var emitterIndex = stream.ReadInt32();
var m = e.Media[0];
m.StartFrame = stream.ReadInt32();
m.DurationFrames = stream.ReadInt32();
break;
}
// Folder
case 1:
{
var e = (FolderTrack)track;
e.IconColor = new Color(stream.ReadByte(), stream.ReadByte(), stream.ReadByte(), stream.ReadByte());
break;
}
}
AddLoadedTrack(track);
}
for (int i = 0; i < tracksCount; i++)
{
var parentIndex = (int)_tracks[i].Tag;
_tracks[i].Tag = null;
if (parentIndex != -1)
{
_tracks[i].ParentTrack = _tracks[parentIndex];
}
}
for (int i = 0; i < tracksCount; i++)
{
_tracks[i].OnLoaded();
}
}
ArrangeTracks();
ClearEditedFlag();
OnPlay();
}