Add exception description for invalid child index.

2023-05-25 15:02:03 +08:00
parent 5b510fa5da
commit 5f4d35b3b3
2 changed files with 9 additions and 4 deletions
--- a/Assets/Cryville/Crtr/Event/ContainerState.cs
+++ b/Assets/Cryville/Crtr/Event/ContainerState.cs
@@ -24,7 +24,10 @@ namespace Cryville.Crtr.Event {
 			= new Dictionary<Type, List<ContainerState>>();

 		public ContainerState GetChild(int index, Type handlerType) {
-			return TypedChildren[handlerType][index];
+			var list = TypedChildren[handlerType];
+			if (index < 0 || index >= list.Count)
+				throw new ArgumentOutOfRangeException("index", string.Format("{0}#{1} does not exist.", list[0].Handler.TypeName, index)); 
+			return list[index];
 		}

 		private bool m_active;