255 lines
9.7 KiB
C#
255 lines
9.7 KiB
C#
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using System;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.Timeline;
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using UnityEngine.Playables;
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using UnityEngineInternal; // for metro type extensions
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namespace UnityEngine.Timeline
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{
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public partial class TimelineAsset
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{
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/// <summary>
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/// Allows you to create a track and add it to the Timeline.
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/// </summary>
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/// <param name="type">The type of track to create. Must derive from TrackAsset.</param>
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/// <param name="parent">Track to parent to. This can be null.</param>
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/// <param name="name">Name to give the track.</param>
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/// <returns>The created track.</returns>
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/// <remarks>
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/// This method will throw an InvalidOperationException if the parent is not valid. The parent can be any GroupTrack, or a supported parent type of track. For example, this can be used to create override tracks in AnimationTracks.
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/// </remarks>
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public TrackAsset CreateTrack(Type type, TrackAsset parent, string name)
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{
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if (parent != null && parent.timelineAsset != this)
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throw new InvalidOperationException("Addtrack cannot parent to a track not in the Timeline");
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if (!typeof(TrackAsset).IsAssignableFrom(type))
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throw new InvalidOperationException("Supplied type must be a track asset");
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if (parent != null)
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{
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if (!TimelineCreateUtilities.ValidateParentTrack(parent, type))
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throw new InvalidOperationException("Cannot assign a child of type " + type.Name + " to a parent of type " + parent.GetType().Name);
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}
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var baseName = name;
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if (string.IsNullOrEmpty(baseName))
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{
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baseName = type.Name;
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#if UNITY_EDITOR
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baseName = UnityEditor.ObjectNames.NicifyVariableName(baseName);
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#endif
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}
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var trackName = baseName;
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if (parent != null)
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trackName = TimelineCreateUtilities.GenerateUniqueActorName(parent.subTracksObjects, baseName);
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else
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trackName = TimelineCreateUtilities.GenerateUniqueActorName(trackObjects, baseName);
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TrackAsset newTrack = AllocateTrack(parent, trackName, type);
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return newTrack;
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}
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/// <summary>
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/// Creates a track and adds it to the Timeline Asset.
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/// </summary>
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/// <param name="parent">Track to parent to. This can be null.</param>
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/// <param name="trackName">The name of the track being created.</param>
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/// <typeparam name="T">The type of track being created. The track type must be derived from TrackAsset.</typeparam>
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/// <returns>Returns the created track.</returns>
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/// <remarks>
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/// This method will throw an InvalidOperationException if the parent is not valid. The parent can be any GroupTrack, or a supported parent type of track. For example, this can be used to create override tracks in AnimationTracks.
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/// </remarks>
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public T CreateTrack<T>(TrackAsset parent, string trackName) where T : TrackAsset, new()
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{
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return (T)CreateTrack(typeof(T), parent, trackName);
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}
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/// <summary>
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/// Creates a track and adds it to the Timeline Asset.
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/// </summary>
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/// <param name="trackName">The name of the track being created.</param>
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/// <typeparam name="T">The type of track being created. The track type must be derived from TrackAsset.</typeparam>
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/// <returns>Returns the created track.</returns>
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public T CreateTrack<T>(string trackName) where T : TrackAsset, new()
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{
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return (T)CreateTrack(typeof(T), null, trackName);
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}
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/// <summary>
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/// Creates a track and adds it to the Timeline Asset.
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/// </summary>
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/// <typeparam name="T">The type of track being created. The track type must be derived from TrackAsset.</typeparam>
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/// <returns>Returns the created track.</returns>
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public T CreateTrack<T>() where T : TrackAsset, new()
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{
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return (T)CreateTrack(typeof(T), null, null);
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}
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/// <summary>
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/// Delete a clip from this timeline.
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/// </summary>
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/// <param name="clip">The clip to delete.</param>
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/// <returns>Returns true if the removal was successful</returns>
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/// <remarks>
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/// This method will delete a clip and any assets owned by the clip.
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/// </remarks>
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public bool DeleteClip(TimelineClip clip)
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{
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if (clip == null || clip.GetParentTrack() == null)
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{
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return false;
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}
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if (this != clip.GetParentTrack().timelineAsset)
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{
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Debug.LogError("Cannot delete a clip from this timeline");
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return false;
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}
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TimelineUndo.PushUndo(clip.GetParentTrack(), "Delete Clip");
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if (clip.curves != null)
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{
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TimelineUndo.PushDestroyUndo(this, clip.GetParentTrack(), clip.curves);
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}
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// handle wrapped assets
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if (clip.asset != null)
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{
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DeleteRecordedAnimation(clip);
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// TODO -- we should flag assets and owned, instead of this check...
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#if UNITY_EDITOR
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string path = UnityEditor.AssetDatabase.GetAssetPath(clip.asset);
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if (path == UnityEditor.AssetDatabase.GetAssetPath(this))
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#endif
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{
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TimelineUndo.PushDestroyUndo(this, clip.GetParentTrack(), clip.asset);
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}
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}
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var clipParentTrack = clip.GetParentTrack();
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clipParentTrack.RemoveClip(clip);
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clipParentTrack.CalculateExtrapolationTimes();
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return true;
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}
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/// <summary>
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/// Deletes a track from a timeline, including all clips and subtracks.
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/// </summary>
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/// <param name="track">The track to delete. It must be owned by this Timeline.</param>
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/// <returns>True if the track was deleted successfully.</returns>
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public bool DeleteTrack(TrackAsset track)
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{
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if (track.timelineAsset != this)
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return false;
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// push before we modify properties
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TimelineUndo.PushUndo(track, "Delete Track");
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TimelineUndo.PushUndo(this, "Delete Track");
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TrackAsset parent = track.parent as TrackAsset;
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if (parent != null)
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TimelineUndo.PushUndo(parent, "Delete Track");
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var children = track.GetChildTracks();
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foreach (var child in children)
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{
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DeleteTrack(child);
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}
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DeleteRecordedAnimation(track);
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var clipsToDelete = new List<TimelineClip>(track.clips);
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foreach (var clip in clipsToDelete)
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{
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DeleteClip(clip);
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}
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RemoveTrack(track);
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TimelineUndo.PushDestroyUndo(this, this, track);
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return true;
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}
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internal void MoveLastTrackBefore(TrackAsset asset)
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{
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if (m_Tracks == null || m_Tracks.Count < 2 || asset == null)
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return;
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var lastTrack = m_Tracks[m_Tracks.Count - 1];
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if (lastTrack == asset)
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return;
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for (int i = 0; i < m_Tracks.Count - 1; i++)
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{
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if (m_Tracks[i] == asset)
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{
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for (int j = m_Tracks.Count - 1; j > i; j--)
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m_Tracks[j] = m_Tracks[j - 1];
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m_Tracks[i] = lastTrack;
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Invalidate();
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break;
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}
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}
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}
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TrackAsset AllocateTrack(TrackAsset trackAssetParent, string trackName, Type trackType)
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{
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if (trackAssetParent != null && trackAssetParent.timelineAsset != this)
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throw new InvalidOperationException("Addtrack cannot parent to a track not in the Timeline");
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if (!typeof(TrackAsset).IsAssignableFrom(trackType))
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throw new InvalidOperationException("Supplied type must be a track asset");
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var asset = (TrackAsset)CreateInstance(trackType);
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asset.name = trackName;
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const string createTrackUndoName = "Create Track";
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PlayableAsset parent = trackAssetParent != null ? trackAssetParent as PlayableAsset : this;
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TimelineCreateUtilities.SaveAssetIntoObject(asset, parent);
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TimelineUndo.RegisterCreatedObjectUndo(asset, createTrackUndoName);
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TimelineUndo.PushUndo(parent, createTrackUndoName);
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if (trackAssetParent != null)
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trackAssetParent.AddChild(asset);
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else //TimelineAsset is the parent
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AddTrackInternal(asset);
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return asset;
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}
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void DeleteRecordedAnimation(TrackAsset track)
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{
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var animTrack = track as AnimationTrack;
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if (animTrack != null && animTrack.infiniteClip != null)
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TimelineUndo.PushDestroyUndo(this, track, animTrack.infiniteClip);
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if (track.curves != null)
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TimelineUndo.PushDestroyUndo(this, track, track.curves);
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}
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void DeleteRecordedAnimation(TimelineClip clip)
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{
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if (clip == null)
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return;
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if (clip.curves != null)
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TimelineUndo.PushDestroyUndo(this, clip.GetParentTrack(), clip.curves);
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if (!clip.recordable)
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return;
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AnimationPlayableAsset asset = clip.asset as AnimationPlayableAsset;
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if (asset == null || asset.clip == null)
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return;
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TimelineUndo.PushDestroyUndo(this, asset, asset.clip);
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}
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}
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}
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