Add anim.iteration, anim.direction, and anim.delay properties.

Assets/Cryville/Crtr/Components/SkinAnimation.cs

@@ -1,11 +1,16 @@
 using Cryville.Common;
+using System;
 
 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));
+			SubmitProperty("iteration", new PropOp.Float(v => Iteration = v));
+			SubmitProperty("direction", new PropOp.Enum<AnimationDirection>(v => Direction = v, v => (AnimationDirection)v));
+			SubmitProperty("delay", new PropOp.Float(v => Delay = v));
 			_rtimeSrc = new PropSrc.Float(() => _rtime);
+			Iteration = 1;
 		}
 
 		SkinContext _skinContext;
@@ -32,6 +37,9 @@ namespace Cryville.Crtr.Components {
 			}
 		}
 		public float Duration { get; private set; }
+		public float Iteration { get; private set; }
+		public AnimationDirection Direction { get; private set; }
+		public float Delay { get; private set; }
 
 		double _startTime;
 		float _rtime;
@@ -44,7 +52,28 @@ namespace Cryville.Crtr.Components {
 			_startTime = time;
 		}
 		public override void Tick(SkinContainer c, double time) {
-			_rtime = (float)(time - _startTime) / Duration;
+			_rtime = (float)(time - _startTime - Delay) / Duration;
+			if (_rtime < 0) _rtime = 0;
+			else if (_rtime > Iteration) {
+				if (Direction.HasFlag(AnimationDirection.alternate)) {
+					_rtime = Iteration % 2;
+					if (_rtime > 1) _rtime = 2 - _rtime;
+				}
+				else {
+					_rtime = Iteration % 1;
+					if (_rtime == 0) _rtime = 1;
+				}
+			}
+			else {
+				if (Direction.HasFlag(AnimationDirection.alternate)) {
+					_rtime %= 2;
+					if (_rtime > 1) _rtime = 2 - _rtime;
+				}
+				else {
+					_rtime %= 1;
+				}
+			}
+			if (Direction.HasFlag(AnimationDirection.reverse)) _rtime = 1 - _rtime;
 			_rtimeSrc.Invalidate();
 			ChartPlayer.etor.ContextSelfValue = _rtimeSrc;
 			if (_anim != null) c.MatchAnimation(_anim, _rtime, new RuntimeSkinContext(_skinContext));
@@ -52,4 +81,10 @@ namespace Cryville.Crtr.Components {
 		}
 		protected override void OnDestroy() { }
 	}
+	[Flags]
+	public enum AnimationDirection {
+		normal = 0,
+		reverse = 1,
+		alternate = 2,
+	}
 }