Optimized UnityFileDownloader.cs

Assets/NGUI/Scripts/UI/UITexture.cs

@@ -46,7 +46,7 @@ public class UITexture : UIBasicSprite
     protected override void OnStart()
     {
         base.OnStart();
-        if (mOutPath != "")
+        if (mOutPath != null && mOutPath != "")
         {
             mainTexture = GameTextureManager.get(mOutPath);
         }

Assets/SibylSystem/CardDescription/CardDescription.cs

 using System;
+using System.Text;
 using System.Collections.Generic;
 using UnityEngine;
 using YGOSharp.OCGWrapper.Enums;
@@ -27,7 +28,7 @@ public class CardDescription : Servant
             Program.camera_main_2d.ScreenToWorldPoint(new Vector3(-256, Screen.height / 2, 600)),
             new Vector3(0, 0, 0),
             true,
-            Program.ui_back_ground_2d
+            Program.ui_main_2d
         );
         picLoader = gameObject.AddComponent<cardPicLoader>();
         picLoader.code = 0;
@@ -453,52 +454,60 @@ public class CardDescription : Servant
 
     List<string> Logs = new List<string>();
 
+    private StringBuilder logBuilder = new StringBuilder(1024); // 在类成员中创建一个 StringBuilder 实例，初始容量为1024字符，避免频繁扩容
+ 
     public void mLog(string result)
     {
-        Logs.Add(result);
-        string all = "";
-        for (int i = 0; i < Logs.Count; i++)
+        // 1. 添加新日志到列表
+        Logs.Add(result.Replace("\0", "")); // 在添加时就替换掉空字符
+ 
+        // 2. [可选但推荐] 控制日志列表的最大长度，防止无限增长
+        if (Logs.Count > 50) // 例如，最多保留50条日志
         {
-            if (i == Logs.Count - 1)
-            {
-                all += Logs[i].Replace("\0", "");
-            }
-            else
-            {
-                all += Logs[i].Replace("\0", "") + "\n";
-            }
+            Logs.RemoveAt(0);
         }
-        UIHelper.trySetLableTextList(UIHelper.getByName(gameObject, "chat_"), all);
+    
+        // 3. 更新UI显示
+        UpdateLogDisplay();
+ 
+        // 4. 设置定时清除
         Program.go(8000, clearOneLog);
     }
-
+ 
     void clearOneLog()
     {
-        if (Logs.Count > 0)
+       if (Logs.Count > 0)
         {
             Logs.RemoveAt(0);
-            string all = "";
-            foreach (var item in Logs)
-            {
-                all += item + "\n";
-            }
-            try
-            {
-                all = all.Substring(0, all.Length - 1);
-            }
-            catch (System.Exception e) { }
-            UIHelper.trySetLableTextList(UIHelper.getByName(gameObject, "chat_"), all);
+            UpdateLogDisplay();
         }
-        else
+    }
+ 
+    // 提取出的公共方法，用于更新UI
+    private void UpdateLogDisplay()
+    {
+        // 1. 清空 StringBuilder
+        logBuilder.Length = 0;
+    
+        // 2. 高效地构建日志字符串
+        for (int i = 0; i < Logs.Count; i++)
+        {
+            logBuilder.AppendLine(Logs[i]); // AppendLine 会自动在末尾添加换行符
+        }
+ 
+        // 3. 将最终结果设置到UI控件
+        // getByName 可能会有性能开销，如果这个方法被非常频繁调用，可以考虑缓存这个GameObject
+        GameObject chatObject = UIHelper.getByName(gameObject, "chat_");
+        if (chatObject != null)
         {
-            UIHelper.trySetLableTextList(UIHelper.getByName(gameObject, "chat_"), "");
+            UIHelper.trySetLableTextList(chatObject, logBuilder.ToString());
         }
     }
-
+ 
     public void clearAllLog()
     {
-        Program.notGo(clearOneLog);
+        Program.notGo(clearOneLog); // 取消所有待执行的 clearOneLog 任务
         Logs.Clear();
-        UIHelper.trySetLableTextList(UIHelper.getByName(gameObject, "chat_"), "");
+        UpdateLogDisplay(); // 清空列表后，调用一次更新方法来清空UI
     }
 }

Assets/SibylSystem/Program.cs

@@ -552,7 +552,7 @@ public class Program : MonoBehaviour
         string cardsUrl = "https://cdn02.moecube.com:444/koishipro/ygopro-database/zh-CN/cards.cdb";
         string cardsPath = Path.Combine(dbDir, "cards.cdb");
         yield return StartCoroutine(
-            UnityFileDownloader.DownloadFileAsync(
+            UnityFileDownloader.DownloadFileWithHeadCheck(
                 cardsUrl,
                 cardsPath,
                 (success) =>
@@ -570,7 +570,7 @@ public class Program : MonoBehaviour
         string lflistUrl = "https://cdn02.moecube.com:444/koishipro/ygopro-database/zh-CN/lflist.conf";
         string lflistPath = Path.Combine(dbDir, "lflist.conf");
         yield return StartCoroutine(
-            UnityFileDownloader.DownloadFileAsync(
+            UnityFileDownloader.DownloadFileWithHeadCheck(
                 lflistUrl,
                 lflistPath,
                 (success) =>
@@ -588,7 +588,7 @@ public class Program : MonoBehaviour
             "https://cdn02.moecube.com:444/koishipro/ygopro-database/zh-CN/strings.conf";
         string stringsPath = Path.Combine(dbDir, "strings.conf");
         yield return StartCoroutine(
-            UnityFileDownloader.DownloadFileAsync(
+            UnityFileDownloader.DownloadFileWithHeadCheck(
                 stringsUrl,
                 stringsPath,
                 (success) =>

Assets/SibylSystem/ResourceManagers/UnityFileDownloader.cs

@@ -86,6 +86,104 @@ public class UnityFileDownloader
         }
     }
 
+    /// <summary>
+    /// 检查文件版本，如果不是最新则下载。
+    /// 最终结果统一为成功(true)或失败(false)。
+    /// </summary>
+    /// <param name="url">文件下载地址</param>
+    /// <param name="filePath">文件本地存储路径</param>
+    /// <param name="onComplete">完成时的回调。true表示成功（已是最新或已下载），false表示失败。</param>
+    /// <param name="onProgress">下载过程中的进度回调（仅在需要下载时触发）</param>
+    public static IEnumerator DownloadFileWithHeadCheck(
+        string url,
+        string filePath,
+        Action<bool> onComplete,
+        Action<float> onProgress = null) // 移除了onProgress的默认值null，以兼容旧版C#
+    {
+        string etagFilePath = filePath + ".etag";
+        string localEtag = null;
+        bool localFileExists = File.Exists(filePath);
+ 
+        // 1. 读取本地ETag（如果存在）
+        if (File.Exists(etagFilePath))
+        {
+            try
+            {
+                localEtag = File.ReadAllText(etagFilePath);
+            }
+            catch(Exception e)
+            {
+                Debug.LogWarning(string.Format("读取本地ETag文件失败: {0}. Error: {1}. 将强制更新。", etagFilePath, e.Message));
+                localEtag = null; // 读取失败则当做不存在
+            }
+        }
+ 
+        // 2. 发送HEAD请求获取服务器ETag
+        Debug.Log(string.Format("[HEAD] 正在检查: {0}", Path.GetFileName(filePath)));
+        UnityWebRequest headRequest = UnityWebRequest.Head(url);
+        yield return headRequest.SendWebRequest();
+ 
+        if (headRequest.isNetworkError || headRequest.isHttpError)
+        {
+            Debug.LogError(string.Format("[HEAD] 请求失败: {0}\n错误: {1}", url, headRequest.error));
+            if (onComplete != null) onComplete.Invoke(false);
+            yield break;
+        }
+ 
+        string serverEtag = headRequest.GetResponseHeader("ETag");
+        if (string.IsNullOrEmpty(serverEtag))
+        {
+            Debug.LogError(string.Format("[HEAD] 服务器未提供ETag头信息: {0}", url));
+            if (onComplete != null) onComplete.Invoke(false);
+            yield break;
+        }
+ 
+        Debug.Log(string.Format("版本比较: Local ETag='{0}', Server ETag='{1}'", localEtag, serverEtag));
+ 
+        // 3. 比较ETag
+        if (localFileExists && !string.IsNullOrEmpty(localEtag) && localEtag.Equals(serverEtag))
+        {
+            Debug.Log(string.Format("[OK] 文件已是最新版本: {0}", Path.GetFileName(filePath)));
+            if (onComplete != null) onComplete.Invoke(true); // 已是最新，也算成功
+            yield break;
+        }
+ 
+        // 4. ETag不匹配或本地文件不存在，执行下载
+        Debug.Log(string.Format("发现新版本或本地文件不存在，开始下载: {0}", Path.GetFileName(filePath)));
+        
+        // --- Chaining Coroutine to get the result ---
+        bool downloadSucceeded = false;
+        // 创建一个回调，用于从DownloadFileAsync获取其执行结果
+        Action<bool> downloadCallback = delegate(bool success)
+        {
+            downloadSucceeded = success;
+        };
+        // 调用下载协程，并等待它完成
+        yield return DownloadFileAsync(url, filePath, downloadCallback, onProgress);
+        // --- Coroutine finished, now check the result ---
+ 
+        // 5. 下载完成后，更新ETag并回调
+        if (downloadSucceeded)
+        {
+            try
+            {
+                File.WriteAllText(etagFilePath, serverEtag);
+                Debug.Log(string.Format("成功保存新的ETag到: {0}", etagFilePath));
+                if (onComplete != null) onComplete.Invoke(true); // 下载并保存ETag成功
+            }
+            catch(Exception e)
+            {
+                Debug.LogError(string.Format("保存ETag文件失败: {0}. Error: {1}", etagFilePath, e.Message));
+                if (onComplete != null) onComplete.Invoke(false); // ETag保存失败，算整体失败
+            }
+        }
+        else
+        {
+            // DownloadFileAsync 内部已经打印了错误日志
+            if (onComplete != null) onComplete.Invoke(false); // 下载失败
+        }
+    }
+
     private static int GetTimeoutForFile(string filename)
     {
         string extension = Path.GetExtension(filename).ToLower();