修改水

Packages/com.waveharmonic.crest/Runtime/Scripts/Utility/Shared/Singleton.cs

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+// Crest Water System
+// Copyright © 2024 Wave Harmonic. All rights reserved.
+
+// Based on Unity's ScriptableSingleton but works with Assets and Packages
+// directory. Works in builds except loading from file so it will need a
+// reference in the scene for it to instantiate.
+
+using System;
+using UnityEditor;
+using UnityEngine;
+
+namespace WaveHarmonic.Crest.Utility
+{
+    [AttributeUsage(AttributeTargets.Class)]
+    sealed class FilePath : Attribute
+    {
+        public readonly string _Path;
+
+        public FilePath(string path)
+        {
+            _Path = path;
+        }
+    }
+
+    abstract class ScriptableSingleton<T> : ScriptableObject where T : ScriptableObject
+    {
+        public static T Instance { get; private set; }
+
+        public ScriptableSingleton()
+        {
+            // Constructor will be called during run-time if there is a asset reference saved
+            // in a scene or preloaded assets.
+            // BUG: There appears to be a Unity bug where this will not happen which required
+            // recreating the asset. Perhaps after renaming the script.
+            Instance = this as T;
+        }
+
+#if UNITY_EDITOR
+        static string GetFilePath()
+        {
+            foreach (var attribute in typeof(T).GetCustomAttributes(inherit: true))
+            {
+                if (attribute is FilePath f)
+                {
+                    return f._Path;
+                }
+            }
+
+            return string.Empty;
+        }
+
+        internal static void LoadFromAsset()
+        {
+            if (Instance != null)
+            {
+                return;
+            }
+
+            // This will trigger the constructor and set Instance. But setting it here first
+            // prevents exceptions when data changes.
+            Instance = AssetDatabase.LoadAssetAtPath<T>(GetFilePath());
+        }
+#endif
+    }
+}