新增 FlowScope Git 包雏形

Packages/com.flowscope.gamecore/Runtime/Resources/ResourceHandle.cs

@@ -0,0 +1,51 @@
+using System;
+
+namespace FlowScope.Resources
+{
+    public sealed class ResourceHandle<T> : IResourceHandle<T> where T : class
+    {
+        private readonly ResourceEntry _entry;
+        private readonly Action<string, object> _release;
+        private T _asset;
+
+        internal ResourceHandle(ResourceEntry entry)
+        {
+            _entry = entry ?? throw new ArgumentNullException(nameof(entry));
+            Key = entry.Key;
+            _asset = (T)entry.Asset;
+        }
+
+        public ResourceHandle(string key, T asset, Action<string, object> release)
+        {
+            Key = string.IsNullOrWhiteSpace(key)
+                ? throw new ArgumentException("Resource key is required.", nameof(key))
+                : key;
+            _asset = asset ?? throw new ArgumentNullException(nameof(asset));
+            _release = release ?? throw new ArgumentNullException(nameof(release));
+        }
+
+        public string Key { get; }
+        public T Asset => IsDisposed ? null : _asset;
+        public bool IsDisposed { get; private set; }
+
+        public void Dispose()
+        {
+            if (IsDisposed)
+            {
+                return;
+            }
+
+            IsDisposed = true;
+            var asset = _asset;
+            _asset = null;
+
+            if (_entry != null)
+            {
+                _entry.ReleaseHandle();
+                return;
+            }
+
+            _release(Key, asset);
+        }
+    }
+}