public AssetStream(AssetRec asset, UInt32 chunkMaxSize = NetworkConstants.ASSET_STREAM_BUFFER_SIZE) : base()
{
_buffer = new byte[NetworkConstants.FILE_STREAM_BUFFER_SIZE];
assetRec = asset;
AlignBytes((int)assetRec.size);
}
public bool Open(AssetSpec assetSpec)
{
try
{
if (AssetLoader.assetsCache.ContainsKey(assetSpec.id))
{
assetRec = AssetLoader.assetsCache[assetSpec.id];
}
else
{
using (var dbContext = Database.For <ThePalaceEntities>())
{
assetRec = dbContext.Assets.AsNoTracking()
.Where(a => a.AssetId == assetSpec.id)
.Where(a => (int)assetSpec.crc == 0 || a.AssetCrc == (int)assetSpec.crc)
.Where(a => (a.Flags & (Int32)ServerAssetFlags.HighResProp) == 0)
.AsEnumerable()
.Select(a => new AssetRec
{
//type = LegacyAssetTypes.RT_PROP,
propSpec = new AssetSpec(a.AssetId, (UInt32)a.AssetCrc),
name = a.Name,
flags = (UInt32)a.Flags,
size = (UInt32)(a.Data?.Length ?? 0),
data = a.Data,
})
.FirstOrDefault();
}
}
if (assetRec != null && assetRec.size > 0)
{
assetRec.nbrBlocks = (UInt16)((assetRec.size / _chunkMaxSize) + ((assetRec.size % _chunkMaxSize) > 0 ? 1 : 0));
assetRec.blockSize = (UInt32)((assetRec.size - _bytesRead > _chunkMaxSize) ?
((_chunkMaxSize > assetRec.size - _bytesRead) ? assetRec.size - _bytesRead : _chunkMaxSize) :
(assetRec.size - _bytesRead > 0) ? assetRec.size - _bytesRead : 0);
AlignBytes((int)assetRec.size);
if (assetRec.size <= 9000)
{
AssetLoader.assetsCache[assetSpec.id] = assetRec;
}
_stream = new MemoryStream(assetRec.data);
return(true);
}
}
catch (Exception ex)
{
ex.DebugLog();
}
return(false);
}
public void Deserialize(Packet packet)
{
assetRec = new AssetRec();
packet.DropBytes(4); //assetRec.type = (LegacyAssetTypes)packet.ReadSInt32();
assetRec.propSpec = new AssetSpec(packet);
assetRec.blockSize = packet.ReadUInt32();
assetRec.blockOffset = packet.ReadSInt32();
assetRec.blockNbr = packet.ReadUInt16();
assetRec.nbrBlocks = packet.ReadUInt16();
if (assetRec.blockNbr < 1)
{
assetRec.flags = packet.ReadUInt32();
assetRec.size = packet.ReadUInt32();
assetRec.name = packet.ReadPString(32);
if (assetRec.blockSize > assetRec.size || assetRec.blockSize > NetworkConstants.ASSET_MAX_BLOCK_SIZE || assetRec.blockSize < 0 || assetRec.size < 1 || assetRec.size > NetworkConstants.ASSET_MAX_BLOCK_SIZE)
{
return;
}
assetRec.data = packet.getData((int)assetRec.blockSize);
}
}
public void Read()
{
var _fileHeader = new FileHeaderRec();
var _mapHeader = new MapHeaderRec();
//var _types = new List<AssetTypeRec>();
var _assets = new List <AssetRec>();
var nameData = new byte[0];
var data = new byte[0];
var read = 0;
_fileStream.Seek(0, SeekOrigin.Begin);
data = new byte[FileHeaderRec.SizeOf];
read = _fileStream.Read(data, 0, FileHeaderRec.SizeOf);
if (read == FileHeaderRec.SizeOf)
{
using (var tmp = new Packet(data))
{
_fileHeader.dataOffset = tmp.ReadSInt32();
_fileHeader.dataSize = tmp.ReadSInt32();
_fileHeader.assetMapOffset = tmp.ReadSInt32();
_fileHeader.assetMapSize = tmp.ReadSInt32();
//tmp.Clear();
}
//data = null;
}
else
{
throw new Exception("Bad Read");
}
_fileStream.Seek(_fileHeader.assetMapOffset, SeekOrigin.Begin);
data = new byte[MapHeaderRec.SizeOf];
read = _fileStream.Read(data, 0, MapHeaderRec.SizeOf);
if (read == MapHeaderRec.SizeOf)
{
using (var tmp = new Packet(data))
{
_mapHeader.nbrTypes = tmp.ReadSInt32();
_mapHeader.nbrAssets = tmp.ReadSInt32();
_mapHeader.lenNames = tmp.ReadSInt32();
_mapHeader.typesOffset = tmp.ReadSInt32();
_mapHeader.recsOffset = tmp.ReadSInt32();
_mapHeader.namesOffset = tmp.ReadSInt32();
//tmp.Clear();
}
//data = null;
}
else
{
throw new Exception("Bad Read");
}
if (_mapHeader.nbrTypes < 0 || _mapHeader.nbrAssets < 0 || _mapHeader.lenNames < 0)
{
throw new Exception("Invalid Map Header");
}
#region Asset Types
_fileStream.Seek(_mapHeader.typesOffset + _fileHeader.assetMapOffset, SeekOrigin.Begin);
data = new byte[_mapHeader.nbrTypes * AssetTypeRec.SizeOf];
read = _fileStream.Read(data, 0, _mapHeader.nbrTypes * AssetTypeRec.SizeOf);
if (read == _mapHeader.nbrTypes * AssetTypeRec.SizeOf)
{
// Deprecated
//using (var tmp = new Packet(data))
//{
// for (int i = 0; i < _mapHeader.nbrTypes; i++)
// {
// var t = new AssetTypeRec();
// t.Type = (LegacyAssetTypes)tmp.ReadUInt32();
// t.nbrAssets = tmp.ReadUInt32();
// t.firstAsset = tmp.ReadUInt32();
// _types.Add(t);
// }
// //data.Clear();
//}
//data = null;
}
else
{
throw new Exception("Bad Read");
}
#endregion
#region Prop Names
if (_mapHeader.lenNames > 0)
{
_fileStream.Seek(_mapHeader.namesOffset + _fileHeader.assetMapOffset, SeekOrigin.Begin);
nameData = new byte[_mapHeader.lenNames];
read = _fileStream.Read(nameData, 0, _mapHeader.lenNames);
//if (read != mapHeader.lenNames)
//{
// mapHeader.namesOffset = 0;
// mapHeader.lenNames = read;
//}
}
#endregion
#region Asset Records
data = new byte[_mapHeader.nbrAssets * AssetRec.SizeOf];
_fileStream.Seek(_mapHeader.recsOffset + _fileHeader.assetMapOffset, SeekOrigin.Begin);
read = _fileStream.Read(data, 0, _mapHeader.nbrAssets * AssetRec.SizeOf);
if (read == _mapHeader.nbrAssets * AssetRec.SizeOf)
{
using (var tmp = new Packet(data))
{
for (int i = 0; i < _mapHeader.nbrAssets; i++)
{
var t = new AssetRec();
t.propSpec.id = tmp.ReadSInt32();
tmp.DropBytes(4); //rHandle
t.blockOffset = tmp.ReadSInt32();
t.blockSize = tmp.ReadUInt32();
t.lastUsed = tmp.ReadSInt32();
t.nameOffset = tmp.ReadSInt32();
t.flags = tmp.ReadUInt32();
t.propSpec.crc = tmp.ReadUInt32();
t.name = nameData.ReadPString(32, t.nameOffset);
t.data = new byte[t.blockSize];
_fileStream.Seek(_fileHeader.dataOffset + t.blockOffset, SeekOrigin.Begin);
read = _fileStream.Read(t.data, 0, (Int32)t.blockSize);
if (read == t.blockSize)
{
var crc = Cipher.ComputeCrc(t.data, 12, true);
if (t.propSpec.crc == crc)
{
//t.type = LegacyAssetTypes.RT_PROP;
_assets.Add(t);
}
}
else
{
throw new Exception("Bad Read");
}
}
//data.Clear();
}
//data = null;
}
else
{
throw new Exception("Bad Read");
}
#endregion
#region Flush to Database
using (var dbContext = Database.Database.For <ThePalaceEntities>())
{
_assets
//.Where(m => m.type == LegacyAssetTypes.RT_PROP)
//.ToList()
.ForEach(a =>
{
if (!dbContext.Assets.Any(m => m.AssetId == a.propSpec.id))
{
var asset = new Assets
{
AssetId = a.propSpec.id,
AssetCrc = (Int32)a.propSpec.crc,
Flags = (Int32)a.flags,
Name = a.name,
Data = a.data,
};
asset.LastUsed = AssetConstants.epoch.AddSeconds(a.lastUsed);
if (asset.LastUsed.CompareTo(AssetConstants.pepoch) < 0)
{
asset.LastUsed = AssetConstants.pepoch;
}
dbContext.Assets.Add(asset);
}
});
if (dbContext.HasUnsavedChanges())
{
dbContext.SaveChanges();
}
}
#endregion
}
