public static Level Load(Stream lvlStream, string fileName)
{
byte[] temp = new byte[8];
using (Level lvl = new Level(fileName, 0, 0, 0, "empty"))
{
byte[] data;
int length;
try
{
lvlStream.Seek(-4, SeekOrigin.End);
lvlStream.Read(temp, 0, sizeof(int));
lvlStream.Seek(0, SeekOrigin.Begin);
length = BitConverter.ToInt32(temp, 0);
data = new byte[length];
using (GZipStream reader = new GZipStream(lvlStream, CompressionMode.Decompress, true))
{
reader.Read(data, 0, length);
}
for (int i = 0; i < length - 1; i++)
{
if (data[i] == 0xAC && data[i + 1] == 0xED)
{
// bypassing the header crap
int pointer = i + 6;
Array.Copy(data, pointer, temp, 0, sizeof(short));
pointer += IPAddress.HostToNetworkOrder(BitConverter.ToInt16(temp, 0));
pointer += 13;
int headerEnd = 0;
// find the end of serialization listing
for (headerEnd = pointer; headerEnd < data.Length - 1; headerEnd++)
{
if (data[headerEnd] == 0x78 && data[headerEnd + 1] == 0x70)
{
headerEnd += 2;
break;
}
}
// start parsing serialization listing
int offset = 0;
while (pointer < headerEnd)
{
if (data[pointer] == 'Z') offset++;
else if (data[pointer] == 'I' || data[pointer] == 'F') offset += 4;
else if (data[pointer] == 'J') offset += 8;
pointer += 1;
Array.Copy(data, pointer, temp, 0, sizeof(short));
short skip = IPAddress.HostToNetworkOrder(BitConverter.ToInt16(temp, 0));
pointer += 2;
// look for relevant variables
Array.Copy(data, headerEnd + offset - 4, temp, 0, sizeof(int));
if (MemCmp(data, pointer, "width"))
{
lvl.width = (ushort)IPAddress.HostToNetworkOrder(BitConverter.ToInt32(temp, 0));
}
else if (MemCmp(data, pointer, "depth"))
{
lvl.depth = (ushort)IPAddress.HostToNetworkOrder(BitConverter.ToInt32(temp, 0));
}
else if (MemCmp(data, pointer, "height"))
{
lvl.height = (ushort)IPAddress.HostToNetworkOrder(BitConverter.ToInt32(temp, 0));
}
pointer += skip;
}
lvl.spawnx = (ushort)(lvl.width / 1.3);
lvl.spawny = (ushort)(lvl.depth / 1.3);
lvl.spawnz = (ushort)(lvl.height / 1.3);
// find the start of the block array
bool foundBlockArray = false;
offset = Array.IndexOf<byte>(data, 0x00, headerEnd);
while (offset != -1 && offset < data.Length - 2)
{
if (data[offset] == 0x00 && data[offset + 1] == 0x78 && data[offset + 2] == 0x70)
{
foundBlockArray = true;
pointer = offset + 7;
}
offset = Array.IndexOf<byte>(data, 0x00, offset + 1);
}
// copy the block array... or fail
if (foundBlockArray)
{
lvl.CopyBlocks(data, pointer);
lvl.Save(true);
}
else
{
throw new Exception("Could not locate block array.");
}
break;
}
}
}
catch (Exception ex)
{
Server.s.Log("Conversion failed");
Server.ErrorLog(ex);
return null;
}
return lvl;
}
}