Esempio n. 1
0
        /// <summary>
        ///   写入下载缓存信息,用于断点续传
        /// </summary>
        void SaveDownloadCacheData()
        {
            if (CurrentState < emState.UpdateAssetBundle)
            {
                return;
            }

            if (!Directory.Exists(Common.CACHE_PATH))
            {
                return;
            }

            //载入新的Manifest
            string new_manifest_name         = Common.GetCacheFileFullName(Common.MAIN_MANIFEST_FILE_NAME);
            AssetBundleManifest new_manifest = Common.LoadMainManifestByPath(new_manifest_name);

            if (new_manifest == null)
            {
                return;
            }

            //先尝试读取旧的缓存信息,再保存现在已经下载的数据
            //PS:由于只有版本完整更新完才会移动Cache目录,且玩家可能多次尝试下载更新,所以必须保留旧的缓存信息
            DownloadCache cache = new DownloadCache();

            cache.Load(Common.DOWNLOADCACHE_FILE_PATH);
            if (ab_download_ != null &&
                ab_download_.CompleteDownloads != null &&
                ab_download_.CompleteDownloads.Count > 0)
            {
                for (int i = 0; i < ab_download_.CompleteDownloads.Count; ++i)
                {
                    string  assetbundle_name = ab_download_.CompleteDownloads[i];
                    Hash128 hash_code        = new_manifest.GetAssetBundleHash(assetbundle_name);
                    if (hash_code.isValid && !cache.Data.AssetBundles.ContainsKey(assetbundle_name))
                    {
                        DownloadCacheData.AssetBundle elem = new DownloadCacheData.AssetBundle()
                        {
                            AssetBundleName = assetbundle_name,
                            Hash            = hash_code.ToString(),
                        };
                        Debug.Log(cache.Data.AssetBundles.Count + " - Cache Add:" + assetbundle_name);
                        cache.Data.AssetBundles.Add(assetbundle_name, elem);
                    }
                }
            }
            if (cache.HasData())
            {
                cache.Save(Common.DOWNLOADCACHE_FILE_PATH);
            }
        }
Esempio n. 2
0
        /// <summary>
        ///   比较AssetBundle差异,获得下载列表与删除列表
        /// </summary>
        static void CompareAssetBundleDifference(ref List <string> download_files
                                                 , ref List <string> delete_files
                                                 , AssetBundleManifest old_manifest
                                                 , AssetBundleManifest new_manifest
                                                 , ResourcesManifest old_resourcesmanifest
                                                 , ResourcesManifest new_resourcesmanifest)
        {
            if (download_files != null)
            {
                download_files.Clear();
            }
            if (delete_files != null)
            {
                delete_files.Clear();
            }

            if (old_manifest == null)
            {
                return;
            }
            if (new_manifest == null)
            {
                return;
            }
            if (new_resourcesmanifest == null)
            {
                return;
            }

            //采用位标记的方式判断资源
            //位标记: 0: 存在旧资源中 1: 存在新资源中 2:本地资源标记
            int old_version_bit               = 0x1;        // 存在旧资源中
            int new_version_bit               = 0x2;        // 存在新资源中
            int old_version_native_bit        = 0x4;        // 旧的本地资源
            int new_version_native_bit        = 0x8;        // 新的本地资源
            Dictionary <string, int> temp_dic = new Dictionary <string, int>();

            //标记旧资源
            string[] all_assetbundle = old_manifest.GetAllAssetBundles();
            for (int i = 0; i < all_assetbundle.Length; ++i)
            {
                string name = all_assetbundle[i];
                _SetDictionaryBit(ref temp_dic, name, old_version_bit);
            }
            //标记新资源
            string[] new_all_assetbundle = new_manifest.GetAllAssetBundles();
            for (int i = 0; i < new_all_assetbundle.Length; ++i)
            {
                string name = new_all_assetbundle[i];
                _SetDictionaryBit(ref temp_dic, name, new_version_bit);
            }

            //标记旧的本地资源
            if (old_resourcesmanifest.Data != null && old_resourcesmanifest.Data.AssetBundles != null)
            {
                var resource_manifest_itr = old_resourcesmanifest.Data.AssetBundles.GetEnumerator();
                while (resource_manifest_itr.MoveNext())
                {
                    if (resource_manifest_itr.Current.Value.IsNative)
                    {
                        string name = resource_manifest_itr.Current.Value.AssetBundleName;
                        //  _SetDictionaryBit(ref temp_dic, name, old_version_native_bit);
                    }
                }
            }

            //标记新的本地资源
            if (new_resourcesmanifest.Data != null && new_resourcesmanifest.Data.AssetBundles != null)
            {
                var resource_manifest_itr = new_resourcesmanifest.Data.AssetBundles.GetEnumerator();
                while (resource_manifest_itr.MoveNext())
                {
                    if (resource_manifest_itr.Current.Value.IsNative)
                    {
                        string name = resource_manifest_itr.Current.Value.AssetBundleName;
                        //  _SetDictionaryBit(ref temp_dic, name, new_version_native_bit);
                    }
                }
            }

            //获得对应需操作的文件名, 优先级: both > add > delete
            //both: 第0位与第1位都被标记的
            //delete: 仅第0位被标记的
            //add: 第2位未标记,且第3位被标记的
            int           both_bit   = old_version_bit | new_version_bit; // 二个版本资源都存在
            List <string> add_files  = new List <string>();
            List <string> both_files = new List <string>();
            var           itr        = temp_dic.GetEnumerator();

            while (itr.MoveNext())
            {
                string name = itr.Current.Key;
                int    mask = itr.Current.Value;
                if (mask == new_version_bit)
                {
                    add_files.Add(name);
                }
                else if (mask == both_bit)
                {
                    both_files.Add(name);
                }
                else if (mask == old_version_bit)
                {
                    delete_files.Add(name);
                }
            }
            itr.Dispose();

            if (delete_files.Count > 0)
            {
                foreach (var v in delete_files)
                {
                    Debug.Log(string.Format("删除文件>{0}", v));
                }
            }

            if (add_files.Count > 0)
            {
                foreach (var v in add_files)
                {
                    Debug.Log(string.Format("新增文件>{0}", v));
                }
            }

            if (both_files.Count > 0)
            {
                foreach (var v in both_files)
                {
                    Debug.Log(string.Format("两者都有文件>{0}", v));
                }
            }

            //载入下载缓存数据
            DownloadCache download_cache = new DownloadCache();

            download_cache.Load(Common.DOWNLOADCACHE_FILE_PATH);
            if (!download_cache.HasData())
            {
                download_cache = null;
            }

            //记录需下载的文件
            {
                //加入新增的文件
                download_files.AddRange(add_files);
                //比较所有同时存在的文件,判断哪些需要更新
                for (int i = 0; i < both_files.Count; ++i)
                {
                    string name      = both_files[i];
                    string full_name = Common.GetFileFullName(name);
                    if (File.Exists(full_name))
                    {
                        //判断哈希值是否相等
                        string old_hash = old_manifest.GetAssetBundleHash(name).ToString();
                        string new_hash = new_manifest.GetAssetBundleHash(name).ToString();
                        if (old_hash.CompareTo(new_hash) == 0)
                        {
                            continue;
                        }

                        download_files.Add(name);
                    }
                }

                //过滤缓存中已下载的文件
                if (download_cache != null)
                {
                    var cache_itr = download_cache.Data.AssetBundles.GetEnumerator();
                    while (cache_itr.MoveNext())
                    {
                        DownloadCacheData.AssetBundle elem = cache_itr.Current.Value;
                        string name      = elem.AssetBundleName;
                        string full_name = Common.GetFileFullName(name);
                        if (File.Exists(full_name))
                        {
                            string cache_hash = elem.Hash;
                            string new_hash   = new_manifest.GetAssetBundleHash(name).ToString();
                            if (!string.IsNullOrEmpty(cache_hash) &&
                                cache_hash.CompareTo(new_hash) == 0)
                            {
                                download_files.Remove(name);
                            }
                        }
                    }
                }
            }
        }