void Start()
{
mDownloader = new AssetDownloader();
mPreStep = Step.None;
mStep = Step.HashmapHash;
// 读取本地的配置列表
string localFiles = UrlUtil.Combine(Settings.UNITY_RAW_FOLDER, "files");
if (File.Exists(localFiles))
{
string[] array = File.ReadAllLines(localFiles);
mLocalCfgMap = new Dictionary<string, AssetCfg>(array.Length);
for (int i = 0; i < array.Length; i++)
{
string line = array[i];
if (string.IsNullOrEmpty(line))
continue;
string[] cells = line.Split('|');
if (cells == null || cells.Length == 0)
continue;
AssetCfg cfg = new AssetCfg(cells);
mLocalCfgMap.Add(cfg.key, cfg);
}
}
else
{
mLocalCfgMap = new Dictionary<string, AssetCfg>();
}
}
private void OnSucceed(string url, byte[] raw, object userData)
{
switch (mPreStep)
{
case Step.HashmapHash:
{
// 和本地的HashmapHash进行对比
mServerHash = new UTF8Encoding(false).GetString(raw);
string local_hashmaphash = GetLocalHashmapHash();
if (string.Equals(local_hashmaphash, mServerHash))
{
SendLocalMapToAssetManager();
Finish();
}
else
mStep = Step.Hashmap;
}
break;
case Step.Hashmap:
{
mServerFiles = new UTF8Encoding(false).GetString(raw);
string[] array = mServerFiles.Replace("\r\n", "\n").Split('\n');
mUpdateQueue = new Queue<string>(array.Length);// 筛选出待更新的项
mTotalUpdateSize = 0u;
for (int i = 0; i < array.Length; i++)
{
string line = array[i];
if (string.IsNullOrEmpty(line))
continue;
string[] cells = line.Split('|');
if (cells == null || cells.Length == 0)
continue;
string key = cells[0];
AssetCfg item = new AssetCfg(cells, GetLocalItemHash(key));
AssetManager.AddCfg(item);
if (item.needUpdate)
{
mUpdateQueue.Enqueue(key);
mTotalUpdateSize += item.size;
}
}
mUpdateQueue.TrimExcess();
// 选择Patch或更新
if (mUpdateQueue.Count == 0)
{
SendLocalMapToAssetManager();
mStep = Step.Patch;
onProgress(null, 1f);
}
else
{
mStep = Step.Update;
mUpdatedSize = 0u;
onProgress(null, 0f);
}
}
break;
case Step.Update:
{
// 写入到Raw中
string key = userData.ToString();
string rawPath = GetRawPath(key, true);
File.WriteAllBytes(rawPath, raw);
// 检查队列
if (mUpdateQueue.Count > 0)
mStep = Step.Update;
else
mStep = Step.Patch;
// 更新进度
AssetCfg item = AssetManager.GetCfg(key);
mUpdatedSize += item.size;
float percent = (mUpdatedSize * 1.0f / mTotalUpdateSize);
onProgress(key, percent);
}
break;
}
}
