88 lines
2.6 KiB
C#
88 lines
2.6 KiB
C#
using System;
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using System.IO;
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using System.Linq;
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using UnityEditor;
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using UnityEditorInternal;
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using UnityEngine;
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namespace HybridCLR.Editor
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{
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public class ScriptableSingleton<T> : ScriptableObject where T : ScriptableObject
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{
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private static T s_Instance;
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public static T Instance
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{
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get
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{
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if (!s_Instance)
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{
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LoadOrCreate();
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}
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return s_Instance;
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}
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}
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public static T LoadOrCreate()
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{
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string filePath = GetFilePath();
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if (!string.IsNullOrEmpty(filePath))
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{
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var arr = InternalEditorUtility.LoadSerializedFileAndForget(filePath);
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s_Instance = arr.Length > 0 ? arr[0] as T : s_Instance??CreateInstance<T>();
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}
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else
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{
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Debug.LogError($"{nameof(ScriptableSingleton<T>)}: 请指定单例存档路径！ ");
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}
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return s_Instance;
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}
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public static void Save(bool saveAsText = true)
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{
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if (!s_Instance)
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{
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Debug.LogError("Cannot save ScriptableSingleton: no instance!");
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return;
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}
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string filePath = GetFilePath();
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if (!string.IsNullOrEmpty(filePath))
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{
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string directoryName = Path.GetDirectoryName(filePath);
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if (!Directory.Exists(directoryName))
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{
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Directory.CreateDirectory(directoryName);
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}
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UnityEngine.Object[] obj = new T[1] { s_Instance };
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InternalEditorUtility.SaveToSerializedFileAndForget(obj, filePath, saveAsText);
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}
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}
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protected static string GetFilePath()
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{
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return typeof(T).GetCustomAttributes(inherit: true)
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.Cast<FilePathAttribute>()
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.FirstOrDefault(v => v != null)
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?.filepath;
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}
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}
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[AttributeUsage(AttributeTargets.Class)]
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public class FilePathAttribute : Attribute
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{
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internal string filepath;
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/// <summary>
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/// 单例存放路径
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/// </summary>
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/// <param name="path">相对 Project 路径</param>
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public FilePathAttribute(string path)
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{
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if (string.IsNullOrEmpty(path))
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{
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throw new ArgumentException("Invalid relative path (it is empty)");
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}
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if (path[0] == '/')
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{
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path = path.Substring(1);
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}
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filepath = path;
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}
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}
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} |