Implement animation.

Assets/Cryville/Crtr/Components/SkinAnimation.cs

@@ -1,5 +1,48 @@
-namespace Cryville.Crtr.Components {
+using Cryville.Common;
+
+namespace Cryville.Crtr.Components {
 	public class SkinAnimation : SkinComponent {
+		public SkinAnimation() {
+			SubmitProperty("name", new PropOp.Identifier(v => Name = v));
+			SubmitProperty("duration", new PropOp.Float(v => Duration = v));
+			_rtimeSrc = new PropSrc.Float(() => _rtime);
+		}
+
+		SkinContext _skinContext;
+
+		AnimationSpan _anim;
+		public int Name {
+			set {
+				if (value == 0) return;
+				var id = new Identifier(value);
+				AnimationSpan anim;
+				if (!ChartPlayer.pskin.animations.TryGetValue(id, out anim)) {
+					Logger.Log("main", 4, "Skin", "Animation {0} not found", id.Name);
+					_anim = null;
+					return;
+				}
+				_anim = anim;
+			}
+		}
+		public float Duration { get; private set; }
+
+		double _startTime;
+		float _rtime;
+		readonly PropSrc _rtimeSrc;
+
+		public override void Init() {
+			_skinContext = new SkinContext(transform);
+		}
+		public override void Rewind(double time) {
+			_startTime = time;
+		}
+		public override void Tick(SkinContainer c, double time) {
+			_rtime = (float)(time - _startTime) / Duration;
+			_rtimeSrc.Invalidate();
+			ChartPlayer.etor.ContextSelfValue = _rtimeSrc;
+			if (_anim != null) c.MatchAnimation(_anim, _rtime, new RuntimeSkinContext(_skinContext));
+			ChartPlayer.etor.ContextSelfValue = null;
+		}
 		protected override void OnDestroy() { }
 	}
 }