新增 FlowScope Git 包雏形

Packages/com.flowscope.gamecore/Runtime/Save/PlayerPrefsSaveStorage.cs

@@ -0,0 +1,55 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using UnityEngine;
+
+namespace FlowScope.Save
+{
+    public sealed class PlayerPrefsSaveStorage : ISaveStorage
+    {
+        private const string Prefix = "FlowScope.Save.";
+
+        public Task WriteAsync(string key, byte[] data, CancellationToken cancellationToken)
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+            if (data == null)
+            {
+                throw new ArgumentNullException(nameof(data));
+            }
+
+            PlayerPrefs.SetString(ToPrefsKey(key), Convert.ToBase64String(data));
+            PlayerPrefs.Save();
+            return Task.CompletedTask;
+        }
+
+        public Task<byte[]> ReadAsync(string key, CancellationToken cancellationToken)
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+            var prefsKey = ToPrefsKey(key);
+            return Task.FromResult(PlayerPrefs.HasKey(prefsKey)
+                ? Convert.FromBase64String(PlayerPrefs.GetString(prefsKey))
+                : null);
+        }
+
+        public void Delete(string key)
+        {
+            PlayerPrefs.DeleteKey(ToPrefsKey(key));
+            PlayerPrefs.Save();
+        }
+
+        public bool Exists(string key)
+        {
+            return PlayerPrefs.HasKey(ToPrefsKey(key));
+        }
+
+        private static string ToPrefsKey(string key)
+        {
+            if (string.IsNullOrWhiteSpace(key))
+            {
+                throw new ArgumentException("Save key is required.", nameof(key));
+            }
+
+            return Prefix + key;
+        }
+    }
+}