private void Init(Stream memstream, string grpFilePath)
{
int numFilesInGrp;
Engine.Printf("bGrpArchive::Init: Loading " + grpFilePath);
#if UNITY_STANDALONE || UNITY_EDITOR
if (memstream != null)
{
grpFile = new BinaryReader(memstream);
}
else
{
grpFile = new BinaryReader(new MemoryStream(Engine.filesystem.ReadContentFile(grpFilePath)));
}
if (grpFile == null)
{
throw new Exception("bGrpArchive::Init Failed to load " + grpFilePath);
}
#else
grpFile = new BinaryReader(new MemoryStream(_defaultGrpFile.bytes));
#endif
grpFile.BaseStream.Position = 0;
grpBuffer = new BinaryReader(new MemoryStream(grpFile.ReadBytes((int)grpFile.BaseStream.Length)));
// Dispose of the HD binary reader since its now loaded into memory.
grpFile.Dispose();
// Check the file header to ensure its a valid grp file.
Engine.Printf("...Checking Integrity");
string header = new string(grpBuffer.ReadChars(12));
if (header != GRPIDEN)
{
throw new Exception("bGrpArchive::Init Invalid Archive");
}
numFilesInGrp = grpBuffer.ReadInt32();
Engine.Printf("..." + numFilesInGrp + " files");
int offset = KENGRP_HEADERSIZE + (KENGRP_LUMPSIZE * numFilesInGrp);
if (lumps == null)
{
lumps = new List <bGrpLump>();
}
lumps.Clear();
for (int i = 0; i < numFilesInGrp; i++)
{
bGrpLump newlump = new bGrpLump();
newlump.lumpName = new string(grpBuffer.ReadChars(12)).ToLower().Trim('\0');
newlump.lumpSize = grpBuffer.ReadInt32();
newlump.lumpOffset = offset;
lumps.Add(newlump);
offset += lumps[i].lumpSize;
}
}
private void WriteLump(BinaryWriter grpwriter, bGrpLump lump)
{
for (int i = 0; i < 12; i++)
{
if (i >= lump.lumpName.Length)
{
grpwriter.Write((byte)0);
}
else
{
grpwriter.Write(lump.lumpName[i]);
}
}
grpwriter.Write(lump.lumpSize);
}