public void SaveChunkBlocks(TerrainChunk chunk)
{
_ = Time.RealTime;
Terrain terrain = m_subsystemTerrain.Terrain;
int num = chunk.Origin.X >> 4;
int num2 = chunk.Origin.Y >> 4;
try
{
bool flag = false;
if (m_chunkOffsets.TryGetValue(new Point2(num, num2), out int value))
{
m_stream.Seek(value, SeekOrigin.Begin);
}
else
{
flag = true;
value = (int)m_stream.Length;
m_stream.Seek(value, SeekOrigin.Begin);
}
WriteChunkHeader(m_stream, num, num2);
int num3 = 0;
for (int i = 0; i < 16; i++)
{
for (int j = 0; j < 16; j++)
{
int num4 = TerrainChunk.CalculateCellIndex(i, 0, j);
for (int k = 0; k < 256; k++)
{
int cellValueFast = chunk.GetCellValueFast(num4++);
m_buffer[num3++] = (byte)cellValueFast;
m_buffer[num3++] = (byte)(cellValueFast >> 8);
}
}
}
m_stream.Write(m_buffer, 0, 131072);
num3 = 0;
for (int l = 0; l < 16; l++)
{
for (int m = 0; m < 16; m++)
{
int shaftValue = terrain.GetShaftValue(l + chunk.Origin.X, m + chunk.Origin.Y);
m_buffer[num3++] = (byte)shaftValue;
m_buffer[num3++] = (byte)(shaftValue >> 8);
m_buffer[num3++] = (byte)(shaftValue >> 16);
m_buffer[num3++] = (byte)(shaftValue >> 24);
}
}
m_stream.Write(m_buffer, 0, 1024);
if (flag)
{
m_stream.Flush();
int num5 = m_chunkOffsets.Count % 65536 * 3 * 4;
m_stream.Seek(num5, SeekOrigin.Begin);
WriteInt(m_stream, num);
WriteInt(m_stream, num2);
WriteInt(m_stream, value);
m_chunkOffsets[new Point2(num, num2)] = value;
}
}
catch (Exception e)
{
Log.Error(ExceptionManager.MakeFullErrorMessage($"Error writing data for chunk ({num},{num2}).", e));
}
_ = Time.RealTime;
}