refactor the runtime code

重构了运行时代码，支持全新的文件系统。
2026-05-22 16:50:18 +00:00 · 2024-07-04 20:36:26 +08:00
parent 2987d356b6
commit ff02da5c54
313 changed files with 9889 additions and 7234 deletions
--- a/Assets/YooAsset/Runtime/FileSystem/Operation/Internal/DefaultDownloadFileOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/Operation/Internal/DefaultDownloadFileOperation.cs
@@ -0,0 +1,118 @@
+using UnityEngine.Networking;
+
+namespace YooAsset
+{
+    internal abstract class DefaultDownloadFileOperation : FSDownloadFileOperation
+    {
+        protected enum ESteps
+        {
+            None,
+            CreateRequest,
+            CheckRequest,
+            VerifyTempFile,
+            CheckVerifyTempFile,
+            TryAgain,
+            Done,
+        }
+
+        // 初始参数
+        protected readonly string _mainURL;
+        protected readonly string _fallbackURL;
+        protected readonly int _failedTryAgain;
+        protected readonly int _timeout;
+
+        // 请求相关
+        protected UnityWebRequest _webRequest;
+        protected string _requestURL;
+        protected int _requestCount = 0;
+
+        // 超时相关
+        protected bool _isAbort = false;
+        protected long _latestDownloadBytes;
+        protected float _latestDownloadRealtime;
+        protected float _tryAgainTimer;
+
+        // 失败相关
+        protected int FailedTryAgain;
+
+
+        internal DefaultDownloadFileOperation(PackageBundle bundle,
+            string mainURL, string fallbackURL, int failedTryAgain, int timeout) : base(bundle)
+        {
+            _mainURL = mainURL;
+            _fallbackURL = fallbackURL;
+            _failedTryAgain = failedTryAgain;
+            _timeout = timeout;
+
+            FailedTryAgain = failedTryAgain;
+        }
+
+        /// <summary>
+        /// 获取网络请求地址
+        /// </summary>
+        protected string GetRequestURL()
+        {
+            // 轮流返回请求地址
+            _requestCount++;
+            if (_requestCount % 2 == 0)
+                return _fallbackURL;
+            else
+                return _mainURL;
+        }
+
+        /// <summary>
+        /// 检测请求超时
+        /// </summary>
+        protected void CheckRequestTimeout()
+        {
+            // 注意：在连续时间段内无新增下载数据及判定为超时
+            if (_isAbort == false)
+            {
+                if (_latestDownloadBytes != DownloadedBytes)
+                {
+                    _latestDownloadBytes = DownloadedBytes;
+                    _latestDownloadRealtime = UnityEngine.Time.realtimeSinceStartup;
+                }
+
+                float offset = UnityEngine.Time.realtimeSinceStartup - _latestDownloadRealtime;
+                if (offset > _timeout)
+                {
+                    YooLogger.Warning($"Web file request timeout : {_requestURL}");
+                    if (_webRequest != null)
+                        _webRequest.Abort();
+                    _isAbort = true;
+                }
+            }
+        }
+
+        /// <summary>
+        /// 检测请求结果
+        /// </summary>
+        protected bool CheckRequestResult()
+        {
+            HttpCode = _webRequest.responseCode;
+
+#if UNITY_2020_3_OR_NEWER
+            if (_webRequest.result != UnityWebRequest.Result.Success)
+            {
+                Error = _webRequest.error;
+                return false;
+            }
+            else
+            {
+                return true;
+            }
+#else
+            if (_webRequest.isNetworkError || _webRequest.isHttpError)
+            {
+                Error = _webRequest.error;
+                return false;
+            }
+            else
+            {
+                return true;
+            }
+#endif
+        }
+    }
+}