Change anchor opening to single only.

Assets/Cryville/Crtr/Event/ContainerHandler.cs

@@ -60,7 +60,7 @@ namespace Cryville.Crtr.Event {
 			get;
 		}
 		public readonly Dictionary<int, List<Anchor>> Anchors = new Dictionary<int, List<Anchor>>();
-		public readonly Dictionary<int, Anchor> OpenAnchors = new Dictionary<int, Anchor>();
+		public Anchor OpenedAnchor;
 		protected Anchor a_cur;
 		protected Anchor a_head;
 		protected Anchor a_tail;
@@ -113,7 +113,7 @@ namespace Cryville.Crtr.Event {
 			Awoken = true; Alive = true;
 		}
 		protected virtual void Awake(ContainerState s) {
-			if (gogroup) CloseAnchor(a_head);
+			if (gogroup) CloseAnchor();
 		}
 		protected virtual void GetPosition(ContainerState s) { }
 		public virtual void StartUpdate(ContainerState s) {
@@ -152,7 +152,7 @@ namespace Cryville.Crtr.Event {
 					tev.Target.Transform.rotation = Quaternion.Euler(s.Direction);
 #endif
 					skinContainer.MatchDynamic(s);
-					CloseAnchor(tev.Target);
+					CloseAnchor();
 				}
 				anchorEvPool.Return(tev);
 			}
@@ -164,7 +164,7 @@ namespace Cryville.Crtr.Event {
 				if (gogroup && s.CloneType <= 2) {
 					OpenAnchor(a_tail);
 					skinContainer.MatchDynamic(s);
-					CloseAnchor(a_tail);
+					CloseAnchor();
 				}
 			}
 		}
@@ -172,10 +172,11 @@ namespace Cryville.Crtr.Event {
 			if (cs.Working) PushAnchorEvent(cs.Time, a_cur);
 		}
 		protected void OpenAnchor(Anchor anchor) {
-			OpenAnchors.Add(anchor.Name, anchor);
+			if (OpenedAnchor != null) throw new InvalidOperationException("An anchor has been opened");
+			OpenedAnchor = anchor;
 		}
-		protected void CloseAnchor(Anchor anchor) {
-			OpenAnchors.Remove(anchor.Name);
+		protected void CloseAnchor() {
+			OpenedAnchor = null;
 		}
 	}
 }

Assets/Cryville/Crtr/SkinSelectors.cs

@@ -89,7 +89,7 @@ namespace Cryville.Crtr {
 				else return Enumerable.Empty<Transform>();
 			}
 			public override bool IsUpdatable(ContainerState h) {
-				return h.Handler.OpenAnchors.ContainsKey(Name);
+				return h.Handler.OpenedAnchor.Name == Name;
 			}
 		}
 		public class AtAnchor : SkinSelector {
@@ -101,7 +101,7 @@ namespace Cryville.Crtr {
 				return IsUpdatable(h) ? a : null;
 			}
 			public override bool IsUpdatable(ContainerState h) {
-				return h.Handler.OpenAnchors.ContainsKey(Name);
+				return h.Handler.OpenedAnchor.Name == Name;
 			}
 		}
 		public class Property : SkinSelector {