public T[] GetLump <T>() where T : new()
{
if (!headerReady)
{
return(default(T[]));
}
LumpType lt = typeof(T).GetCustomAttribute <SetLumpType>().lump_t;
int chunkSize = typeof(T).GetCustomAttribute <SetLumpType>().bytes;
lump_t lumpdefinition = header.lumps[(int)lt];
if (lumpdefinition.chunk.Length == 0)
{
return(default(T[]));
}
byte[] chunk = lumpdefinition.chunk;
int chunkCount = chunk.Length / chunkSize;
T[] chunks = new T[chunkCount];
using (BinaryReader br = new BinaryReader(new MemoryStream()))
{
br.BaseStream.Write(chunk, 0, chunk.Length);
br.BaseStream.Position = 0;
for (int I = 0; I < chunkCount; I++)
{
byte[] curBuffer = br.ReadBytes(chunkSize);
IntPtr intPtr = Marshal.AllocHGlobal(curBuffer.Length);
Marshal.Copy(curBuffer, 0, intPtr, curBuffer.Length);
T LumpStruct = (T)Marshal.PtrToStructure(intPtr, typeof(T));
chunks[I] = LumpStruct;
Marshal.FreeHGlobal(intPtr);
}
br.Close();
}
return(chunks);
}
private void CreateHeader(string fileName)
{
using (BinaryReader br = new BinaryReader(File.Open(fileName, FileMode.Open, FileAccess.Read)))
{
FileName = fileName;
header = new Header()
{
ident = Encoding.ASCII.GetString(br.ReadBytes(4)),
version = br.ReadInt32(),
lumps = new lump_t[64]
};
for (int I = 0; I < header.lumps.Length; I++)
{
lump_t lump = new lump_t()
{
fileoffset = br.ReadInt32(),
filelength = br.ReadInt32(),
version = br.ReadInt32(),
uncompressedLength = br.ReadBytes(4)
};
if (lump.fileoffset > 0 && lump.filelength > 0)
{
long curPosition = br.BaseStream.Position;
br.BaseStream.Position = lump.fileoffset;
lump.chunk = br.ReadBytes(lump.filelength);
br.BaseStream.Position = curPosition;
}
header.lumps[I] = lump;
}
header.mapRevision = br.ReadInt32();
br.Close();
headerReady = true;
}
}