Discontinued non-enum-based States

Author: StephanHooft

Runtime/StateMachines/Exceptions/StateUnavailableException.cs

@@ -5,8 +5,5 @@ public class StateUnavailableException : System.Exception
     {
         public StateUnavailableException(System.Enum key)
             : base(string.Format("No state with key '{0}' was registered.", key)) { }
-
-        public StateUnavailableException(string name)
-            : base(string.Format("No state with name '{0}' was registered.", name)) { }
     }
 }

Runtime/StateMachines/Interfaces/IState.cs

@@ -16,12 +16,6 @@ public interface IState<TEnum> where TEnum: System.Enum
         /// </summary>
         TEnum Key { get; }
 
-        /// <summary>
-        /// A delegate that the <see cref="IState{TEnum}"/> can use to obtain a reference to other
-        /// <see cref="IState{TEnum}"/>s from the same <see cref="IStateMachine{TEnum}"/>.
-        /// </summary>
-        System.Func<TEnum, IState<TEnum>> StateRegister { get; set; }
-
         ////////////////////////////////////////////////////////////////////////////////////////////////////////////////
         #endregion
         #region Interface Methods
@@ -46,11 +40,11 @@ void Exit() { }
         /// The amount of time (in seconds) that has passed since the prior update.
         /// </param>
         /// <returns>
-        /// A <see cref="IState{TEnum}"/> if a transition to said <see cref="IState{TEnum}"/> is required.
+        /// A <typeparamref name="TEnum"/> if a transition to a matching <see cref="IState{TEnum}"/> is required.
         /// <see cref="null"/> if no <see cref="IState{TEnum}"/> transition is required.
         /// </returns>
-        IState<TEnum> Update(float deltaTime)
-            => null;
+        TEnum Update(float deltaTime)
+            => default;
 
         ////////////////////////////////////////////////////////////////////////////////////////////////////////////////
         #endregion