大修

Assets/Editor/IchniProjectDecryptor.cs

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+using UnityEditor;
+using UnityEngine;
+using System.IO;
+using Ichni.RhythmGame.Beatmap;
+
+namespace Ichni.Editor
+{
+    public class IchniProjectDecryptor : EditorWindow
+    {
+        [MenuItem("Tools/Ichni/Decrypt Exported Project")]
+        public static void ShowWindow()
+        {
+            // 打开文件夹选择面板，让用户选择被加密（导出）的工程文件夹
+            string exportFolderPath = EditorUtility.OpenFolderPanel("Select Exported Project Folder", Application.streamingAssetsPath + "/Export", "");
+            
+            if (string.IsNullOrEmpty(exportFolderPath)) return;
+            
+            string projectName = new DirectoryInfo(exportFolderPath).Name;
+            
+            // 选择要输出解密后的工程文件夹（默认为 Projects 文件夹下的同名文件夹）
+            string saveFolderPath = EditorUtility.SaveFolderPanel("Select Output Directory for Decrypted Project", Application.streamingAssetsPath + "/Projects", projectName);
+            
+            if (string.IsNullOrEmpty(saveFolderPath)) return;
+
+            // 确保输出文件夹存在
+            if (!Directory.Exists(saveFolderPath))
+            {
+                Directory.CreateDirectory(saveFolderPath);
+            }
+            
+            bool success = true;
+
+            // 分别解密并转存四个主要配置/谱面文件
+            success &= DecryptAndSave<ProjectInformation_BM>("ProjectInformation", exportFolderPath + "/ProjectInfo.bytes", saveFolderPath + "/ProjectInfo.json");
+            success &= DecryptAndSave<SongInformation_BM>("SongInformation", exportFolderPath + "/SongInfo.bytes", saveFolderPath + "/SongInfo.json");
+            success &= DecryptAndSave<BeatmapContainer_BM>("Beatmap", exportFolderPath + "/Beatmap.bytes", saveFolderPath + "/Beatmap.json");
+            success &= DecryptAndSave<CommandScripts_BM>("CommandScripts", exportFolderPath + "/CommandScripts.bytes", saveFolderPath + "/CommandScripts.json");
+            
+            if (success)
+            {
+                EditorUtility.DisplayDialog("Decryption Complete", $"Project '{projectName}' has been successfully decrypted and saved to:\n{saveFolderPath}", "OK");
+            }
+            else
+            {
+                EditorUtility.DisplayDialog("Decryption Finished with Warnings", $"Project '{projectName}' decryption finished, but some files might be missing or failed to decode. Check Console for details.", "OK");
+            }
+            
+            // 刷新 AssetDatabase
+            AssetDatabase.Refresh();
+        }
+        
+        private static bool DecryptAndSave<T>(string key, string inputPath, string outputPath)
+        {
+            if (!File.Exists(inputPath))
+            {
+                Debug.LogWarning($"[IchniDecryptor] Missing encrypted file, skipping: {inputPath}");
+                return true; // 允许部分文件缺失（例如可能没有CommandScripts）
+            }
+            
+            try
+            {
+                // 使用导出的加密配置进行读取
+                T data = ES3.Load<T>(key, inputPath, ProjectManager.ExportSettings);
+                
+                // 使用明文保存配置转存为 JSON
+                ES3.Save<T>(key, data, outputPath, ProjectManager.SaveSettings);
+                
+                Debug.Log($"[IchniDecryptor] Successfully decrypted: {Path.GetFileName(inputPath)} -> {Path.GetFileName(outputPath)}");
+                return true;
+            }
+            catch (System.Exception e)
+            {
+                Debug.LogError($"[IchniDecryptor] Failed to decrypt {Path.GetFileName(inputPath)}: {e.Message}\n{e.StackTrace}");
+                return false;
+            }
+        }
+    }
+}

Assets/Editor/IchniProjectDecryptor.cs.meta

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+fileFormatVersion: 2
+guid: 814b828a6867ee948b48bbb57a566645