public void Update(GameTime gameTime)
{
var any = false;
Mesh _mesh;
while (IncomingChunks.TryTake(out _mesh))
{
any = true;
var mesh = _mesh as ChunkMesh;
if (ActiveMeshes.Contains(mesh.Chunk.Coordinates))
{
int existing = ChunkMeshes.FindIndex(m => m.Chunk.Coordinates == mesh.Chunk.Coordinates);
ChunkMeshes[existing] = mesh;
}
else
{
ActiveMeshes.Add(mesh.Chunk.Coordinates);
ChunkMeshes.Add(mesh);
}
}
if (any)
{
Game.FlushMainThreadActions();
}
WorldLighting.TryLightNext();
}
//reading data chunks
public override void Start()
{
StartTime = DateTime.Now;
try
{
using (var inFileStream = new FileStream(InFileName, FileMode.Open))
{
InFileStream = inFileStream;
for (ChunkCounter = 0; inFileStream.Length - inFileStream.Position > 0; ChunkCounter++)
{
if (StopRequested)
{
return;
}
//check the percentage of remaining memory to initial
while ((float)CompInfo.AvailablePhysicalMemory / InitialFreeRam < 0.1)
{
//forcing garbage collector cleanup
GC.Collect(2, GCCollectionMode.Forced);
Thread.Sleep(1000);
}
//optimal data read chunk size based on ram and cpu cores
var dataChunkSize = (long)CompInfo.AvailablePhysicalMemory / CoreCount / 1;
//size of chunk for the last chunck
if (inFileStream.Length - inFileStream.Position <= dataChunkSize)
{
dataChunkSize = inFileStream.Length - inFileStream.Position;
}
//size of chunk for small files
if (inFileStream.Length < dataChunkSize)
{
dataChunkSize = inFileStream.Length / CoreCount + 1;
}
//constant size of chunk for huge files
if (dataChunkSize > 256 * 1024 * 1024)
{
dataChunkSize = 256 * 1024 * 1024;
}
var dataChunk = new byte[dataChunkSize];
//read file
inFileStream.Read(dataChunk, 0, (int)dataChunkSize);
lock (Locker)
IncomingChunks.Add(ChunkCounter, dataChunk);
//starting new thread with chunk number as an argument
var chunkNumber = ChunkCounter;
var compressThread = new Thread(() => ProcessChunk(chunkNumber));
compressThread.Start();
}
IncomingFinished = true;
}
}
catch (Exception ex)
{
StopRequested = true;
Console.Write("There is the problem at the compression process:{0}", ex.Message);
}
}
protected override void Update(GameTime gameTime)
{
GameTime = gameTime;
foreach (var i in Interfaces)
{
i.Update(gameTime);
}
Mesh mesh;
while (IncomingChunks.TryTake(out mesh))
{
ChunkMeshes.Add(mesh);
}
Action action;
if (PendingMainThreadActions.TryTake(out action))
{
action();
}
if (NextPhysicsUpdate < DateTime.UtcNow && Client.LoggedIn)
{
IChunk chunk;
var adjusted = Client.World.World.FindBlockPosition(new Coordinates3D((int)Client.Position.X, 0, (int)Client.Position.Z), out chunk);
if (chunk != null)
{
if (chunk.GetHeight((byte)adjusted.X, (byte)adjusted.Z) != 0)
{
Client.Physics.Update();
}
}
// NOTE: This is to make the vanilla server send us chunk packets
// We should eventually make some means of detecing that we're on a vanilla server to enable this
// It's a waste of bandwidth to do it on a TrueCraft server
Client.QueuePacket(new PlayerGroundedPacket {
OnGround = true
});
Client.QueuePacket(new PlayerPositionAndLookPacket(Client.Position.X, Client.Position.Y,
Client.Position.Y + MultiplayerClient.Height, Client.Position.Z, Client.Yaw, Client.Pitch, false));
NextPhysicsUpdate = DateTime.UtcNow.AddMilliseconds(1000 / 20);
}
if (Delta != Microsoft.Xna.Framework.Vector3.Zero)
{
var lookAt = Microsoft.Xna.Framework.Vector3.Transform(
Delta, Matrix.CreateRotationY(Microsoft.Xna.Framework.MathHelper.ToRadians(Client.Yaw)));
Client.Position += new TrueCraft.API.Vector3(lookAt.X, lookAt.Y, lookAt.Z)
* (gameTime.ElapsedGameTime.TotalSeconds * 4.3717);
}
base.Update(gameTime);
}
//compress data chunk
protected override void ProcessChunk(int chunkNumber)
{
if (StopRequested)
{
return;
}
ProcessSemaphore.WaitOne();
try
{
KeyValuePair <int, byte[]> chunk;
lock (Locker)
chunk = IncomingChunks.FirstOrDefault(b => b.Key == chunkNumber);
//stream for processed data
using (var outMemStream = new MemoryStream())
{
using (var zipStream = new GZipStream(outMemStream, CompressionMode.Compress))
{
using (var inMemStream = new MemoryStream(chunk.Value, 0, chunk.Value.Length))
{
inMemStream.CopyTo(zipStream);
}
}
//compressed bytes
var bytes = outMemStream.ToArray();
lock (Locker)
{
//add new data chunk to collection of compressed data
OutgoingChunks.Add(chunkNumber, bytes);
//remove chunk from collection of uncompressed data
IncomingChunks.Remove(chunkNumber);
}
}
}
catch (Exception ex)
{
StopRequested = true;
Console.Write("There is an exception at the compressing process: {0}", ex.Message);
}
ProcessSemaphore.Release();
//if this is the first chunk - start writing to disk in a separate thread
if (chunkNumber == 0 && WritingThread.ThreadState != ThreadState.Running && !StopRequested)
{
WritingThread.Start();
}
}
//read compressed data chunks from disk
public override void Start()
{
StartTime = DateTime.Now;
try
{
using (var inFileStream = new FileStream(InFileName, FileMode.Open))
{
InFileStream = inFileStream;
var header = new byte[8];
for (ChunkCounter = 0; inFileStream.Length - inFileStream.Position > 0; ChunkCounter++)
{
if (StopRequested)
{
return;
}
//ram overload - wait
while ((float)CompInfo.AvailablePhysicalMemory / InitialFreeRam < 0.1)
{
//force gc cleanup
GC.Collect(2, GCCollectionMode.Forced);
Thread.Sleep(1000);
}
//extract compressed data chunk size from gzip header
inFileStream.Read(header, 0, 8);
var dataChunkSize = BitConverter.ToInt32(header, 4);
var compressedChunk = new byte[dataChunkSize];
header.CopyTo(compressedChunk, 0);
//get the rest bytes of data block
inFileStream.Read(compressedChunk, 8, dataChunkSize - 9);
lock (Locker)
IncomingChunks.Add(ChunkCounter, compressedChunk);
var chunkNumber = ChunkCounter;
var decompressThread = new Thread(() => ProcessChunk(chunkNumber));
decompressThread.Start();
}
IncomingFinished = true;
}
}
catch (Exception ex)
{
StopRequested = true;
Console.Write("There is tecompression process:{0}", ex.Message);
}
}
void MeshCompleted(object sender, RendererEventArgs <ReadOnlyChunk> e)
{
IncomingChunks.Add(e.Result);
}
void ChunkConverter_MeshGenerated(object sender, RendererEventArgs <ReadOnlyChunk> e)
{
IncomingChunks.Add(e.Result);
}