From a755cc13bd43c20b6fa15f3f5851e787a41bcd25 Mon Sep 17 00:00:00 2001
From: PopSlime <popslime@qq.com>
Date: Mon, 27 Feb 2023 00:17:14 +0800
Subject: [PATCH] Implement animation.

---
 Assets/Cryville/Crtr/ChartPlayer.cs           |  2 +-
 .../Cryville/Crtr/Components/SkinAnimation.cs | 45 ++++++++++++++++++-
 Assets/Cryville/Crtr/SkinContainer.cs         |  9 ++++
 3 files changed, 54 insertions(+), 2 deletions(-)

diff --git a/Assets/Cryville/Crtr/ChartPlayer.cs b/Assets/Cryville/Crtr/ChartPlayer.cs
index c83b9d9..de4c8ac 100644
--- a/Assets/Cryville/Crtr/ChartPlayer.cs
+++ b/Assets/Cryville/Crtr/ChartPlayer.cs
@@ -24,7 +24,7 @@ namespace Cryville.Crtr {
 		#region Fields
 		Chart chart;
 		Skin skin;
-		PdtSkin pskin;
+		public static PdtSkin pskin;
 		Ruleset ruleset;
 		PdtRuleset pruleset;
 		Dictionary<string, Texture2D> texs;
diff --git a/Assets/Cryville/Crtr/Components/SkinAnimation.cs b/Assets/Cryville/Crtr/Components/SkinAnimation.cs
index 7f4d429..29312cc 100644
--- a/Assets/Cryville/Crtr/Components/SkinAnimation.cs
+++ b/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() { }
 	}
 }
diff --git a/Assets/Cryville/Crtr/SkinContainer.cs b/Assets/Cryville/Crtr/SkinContainer.cs
index 9946ac1..a667f96 100644
--- a/Assets/Cryville/Crtr/SkinContainer.cs
+++ b/Assets/Cryville/Crtr/SkinContainer.cs
@@ -140,6 +140,15 @@ namespace Cryville.Crtr {
 			}
 			if (rc.PropSrcs != null) ChartPlayer.etor.ContextCascadeDiscard();
 		}
+		public void MatchAnimation(AnimationSpan span, float rtime, RuntimeSkinContext ctx) {
+			foreach (var p in span.properties) {
+				p.Key.ExecuteDynamic(_group, ctx, p.Value, 0);
+			}
+			foreach (var s in span.spans) {
+				if (rtime < s.Key.Behind || rtime >= s.Key.Ahead) continue;
+				MatchAnimation(s.Value, rtime, ctx);
+			}
+		}
 	}
 	public class SkinContext {
 		public Transform Transform { get; private set; }