private void InitializeWriter(Stream input, Stream output)
{
dataWriter = new BinaryWriter(output);
infoWriter = new BspInfoWriter(dataWriter);
reader = new BspReader(input);
gatheredInfo = reader.ReadInfo();
}
public void Dispose()
{
dataWriter.Dispose();
infoWriter.Dispose();
reader.Dispose();
gatheredInfo = null;
disposed = true;
}
/// <summary>
/// Reads BSP info from file
/// </summary>
public BspInfo ReadInfo()
{
ThrowExceptionIfDisposed();
if (cachedInfo == null)
{
cachedInfo = RefreshInfo();
}
return(cachedInfo);
}
/// <summary>
/// Writes BspInfo (file header) to file
/// </summary>
public void WriteInfo(BspInfo i)
{
ThrowExceptionIfDisposed();
writer.BaseStream.Position = 0;
writer.Write(i.Identifier);
writer.Write(i.Version);
foreach (BspLumpInfo l in i.Lumps)
{
WriteBspLumpInfo(l);
}
writer.Write(i.MapRevision);
}
private BspInfo RefreshInfo()
{
BspInfo info = new BspInfo();
if (reader.BaseStream.Length < 1036)
{
throw new FileFormatException();
}
reader.BaseStream.Position = 0;
//Read identifier
info.Identifier = reader.ReadInt32();
//Validate identifier
//Little-endian "VBSP" 0x50534256
if (info.Identifier != 0x50534256)
{
throw new FileFormatException();
}
//Read version
info.Version = reader.ReadInt32();
//Read game lumps
info.Lumps = new BspLumpInfo[64];
for (int i = 0; i < 64; i++)
{
info.Lumps[i] = ReadLump();
}
//Read map revision number
info.MapRevision = reader.ReadInt32();
//Return value
return(info);
}
internal BspInfo Clone()
{
var clonedInfo = new BspInfo
{
Identifier = Identifier,
Version = Version,
Lumps = new BspLumpInfo[64],
MapRevision = MapRevision
};
for (int i = 0; i < 64; i++)
{
var oldLump = Lumps[i];
clonedInfo.Lumps[i] = new BspLumpInfo()
{
FileLength = oldLump.FileLength,
FileOffset = oldLump.FileOffset,
fourCC = oldLump.fourCC,
Version = oldLump.Version
};
}
return(clonedInfo);
}