Merge pull request #3 from mackysoft/change/history

Apply generics to history class for development of new features

Assets/MackySoft/MackySoft.Navigathena/Runtime/History.cs

@@ -0,0 +1,56 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace MackySoft.Navigathena
+{
+
+	public class History<T> : IReadOnlyCollection<T>
+	{
+
+		const int kDefauktCapacity = 8;
+
+		readonly Stack<T> m_Stack;
+
+		public int Count => m_Stack.Count;
+
+		public History ()
+		{
+			m_Stack = new Stack<T>(kDefauktCapacity);
+		}
+
+		public History (IEnumerable<T> entries)
+		{
+			if (entries == null)
+			{
+				throw new ArgumentNullException(nameof(entries));
+			}
+			m_Stack = new Stack<T>(entries.Where(x => x != null));
+		}
+
+		public void Push (T entry)
+		{
+			if (entry == null)
+			{
+				throw new ArgumentNullException(nameof(entry));
+			}
+			m_Stack.Push(entry);
+		}
+
+		public T Pop () => m_Stack.Pop();
+
+		public T Peek () => m_Stack.Peek();
+
+		public bool TryPop (out T result) => m_Stack.TryPop(out result);
+
+		public bool TryPeek (out T result) => m_Stack.TryPeek(out result);
+
+		public void Clear () => m_Stack.Clear();
+
+		public IEnumerator<T> GetEnumerator () => m_Stack.GetEnumerator();
+
+		IEnumerator IEnumerable.GetEnumerator () => m_Stack.GetEnumerator();
+
+	}
+}

Assets/MackySoft/MackySoft.Navigathena/Runtime/SceneManagement/SceneHistoryEntry.cs

@@ -0,0 +1,29 @@
+using System;
+using MackySoft.Navigathena.Transitions;
+
+namespace MackySoft.Navigathena.SceneManagement
+{
+
+	public interface IReadOnlySceneHistoryEntry
+	{
+		ISceneIdentifier Scene { get; }
+		ITransitionDirector TransitionDirector { get; }
+		ISceneDataReader DataReader { get; }
+	}
+
+	public sealed class SceneHistoryEntry : IReadOnlySceneHistoryEntry
+	{
+		public ISceneIdentifier Scene { get; }
+		public ITransitionDirector TransitionDirector { get; }
+		public SceneDataStore DataStore { get; }
+
+		ISceneDataReader IReadOnlySceneHistoryEntry.DataReader => DataStore.Reader;
+
+		public SceneHistoryEntry (ISceneIdentifier scene, ITransitionDirector transitionDirectorData, SceneDataStore sceneDataStore)
+		{
+			Scene = scene ?? throw new ArgumentNullException(nameof(scene));
+			TransitionDirector = transitionDirectorData;
+			DataStore = sceneDataStore ?? throw new ArgumentNullException(nameof(sceneDataStore));
+		}
+	}
+}

Assets/MackySoft/MackySoft.Navigathena/Runtime/SceneManagement/SceneNavigator/StandardSceneNavigator.cs

@@ -24,7 +24,7 @@ public sealed class StandardSceneNavigator : ISceneNavigator, IUnsafeSceneNaviga
 		/// History of all scenes, including the current scene.
 		/// Since interrupt processing may occur on ISceneEntryPoint events, the history must be updated prior to calling the event.
 		/// </summary>
-		readonly SceneHistory m_History = new();
+		readonly History<SceneHistoryEntry> m_History = new();
 
 		/// <summary>
 		/// A counter to prevent <see cref="OnSceneLoaded(Scene, LoadSceneMode)"/> from causing a double initialization process.