//copied from HeuristicLab.Problems.Instances.DataAnalysis.ValueGenerator which is not public
/// <summary>
/// Generates uniformly distributed values between start and end (inclusive!)
/// </summary>
/// <param name="n">Number of values to generate.</param>
/// <param name="start">The lower value (inclusive)</param>
/// <param name="end">The upper value (inclusive)</param>
/// <returns>An enumerable including n values in [start, end]</returns>
public static IEnumerable <double> GenerateUniformDistributedValues(int n, double start, double end, FastRandom rand)
{
for (int i = 0; i < n; i++)
{
// we need to return a random value including end.
// so we cannot use rand.NextDouble() as it returns a value strictly smaller than 1.
double r = rand.NextUInt() / (double)uint.MaxValue; // r \in [0,1]
yield return(r * (end - start) + start);
}
}
public PathGenerator(uint seed, GetHeight getHeight)
{
m_getHeight = getHeight;
var fastRandom = new FastRandom(seed);
m_cellNoise = new CellNoise2D(fastRandom.NextUInt());
m_sources = new Dictionary<uint, PathGraphNode>();
m_sinks = new Dictionary<uint, PathGraphNode>();
m_general = new Dictionary<uint, PathGraphNode>();
m_paths = new List<PathNodeList>();
}
private string GenerateKey1And2(FastRandom random)
{
// Changed random.Next(1, 13) to random.Next(2, 13) else max would be too large
var spaces = random.Next(2, 13);
var max = random.NextUInt() / spaces;
var number = random.Next(0, (int)max + 1);
var product = number * spaces;
var key = product.ToString();
var amountOfCharacters = random.Next(1, 13);
var amountFirstSeries = amountOfCharacters / 2;
var amountSecondSeries = amountOfCharacters - amountFirstSeries;
var firstSeries = new List <string>();
for (var i = 0; i < amountFirstSeries; i++)
{
// First unicode series
var unicodeChar = Convert.ToString(random.Next(21, 48));
firstSeries.Add(unicodeChar);
}
var secondSeries = new List <string>();
for (var i = 0; i < amountSecondSeries; i++)
{
// Second unicode series
var unicodeChar = Convert.ToString(random.Next(58, 126));
secondSeries.Add(unicodeChar);
}
firstSeries.ForEach(unicodeCharacter => key = InsertAtRandomLocation(key, unicodeCharacter, random));
secondSeries.ForEach(unicodeCharacter => key = InsertAtRandomLocation(key, unicodeCharacter, random));
// Insert random spaces
for (var i = 0; i < spaces; i++)
{
var location = random.Next(1, key.Length - 1);
key = key.Insert(location, SpaceCharacter);
}
return(key);
}
/// <summary>
/// Get the next sample value from the gaussian distribution.
/// </summary>
public double NextSample()
{
for (; ;)
{
// Select box at random.
byte u = _rng.NextByte();
int i = u & 0x7F;
double sign = ((u & 0x80) == 0) ? -1.0 : 1.0;
// Generate uniform random value with range [0,0xffffffff].
uint u2 = _rng.NextUInt();
// Special case for the base segment.
if (0 == i)
{
if (u2 < _xComp[0])
{ // Generated x is within R0.
return(u2 * __UIntToU * _A_Div_Y0 * sign);
}
// Generated x is in the tail of the distribution.
return(SampleTail() * sign);
}
// All other segments.
if (u2 < _xComp[i])
{ // Generated x is within the rectangle.
return(u2 * __UIntToU * _x[i] * sign);
}
// Generated x is outside of the rectangle.
// Generate a random y coordinate and test if our (x,y) is within the distribution curve.
// This execution path is relatively slow/expensive (makes a call to Math.Exp()) but relatively rarely executed,
// although more often than the 'tail' path (above).
double x = u2 * __UIntToU * _x[i];
if (_y[i - 1] + ((_y[i] - _y[i - 1]) * _rng.NextDouble()) < GaussianPdfDenorm(x))
{
return(x * sign);
}
}
}
public static uint UInt()
{
return(random.NextUInt());
}
private static async Task QueryJavaServerAsync(string hostname, ushort port, PingServerDelegate pingCallback, ServerStatusDelegate statusCallBack)
{
IPEndPoint endPoint = null;
var sw = Stopwatch.StartNew();
string jsonResponse = null;
try
{
var result = await ResolveHostnameAsync(hostname);
if (!result.Success)
{
statusCallBack?.Invoke(new ServerQueryResponse(false, "multiplayer.status.cannot_resolve", new ServerQueryStatus()
{
Delay = sw.ElapsedMilliseconds,
Success = false,
EndPoint = null,
Address = hostname,
Port = port
}));
return;
}
bool waitingOnPing = true;
using (TcpClient client = new TcpClient())
{
await client.ConnectAsync(result.Result, port);
endPoint = client.Client.RemoteEndPoint as IPEndPoint;
if (client.Connected)
{
//conn = new NetConnection(Direction.ClientBound, client.Client);
//conn.LogExceptions = false;
using (var conn = new NetConnection(Direction.ClientBound, client.Client)
{
LogExceptions = true
})
{
long pingId = Rnd.NextUInt();
EventWaitHandle ar = new EventWaitHandle(false, EventResetMode.AutoReset);
conn.OnPacketReceived += (sender, args) =>
{
if (args.Packet is ResponsePacket responsePacket)
{
jsonResponse = responsePacket.ResponseMsg;
ar.Set();
}
else if (args.Packet is PingPacket pong)
{
if (pong.Payload == pingId)
{
waitingOnPing = false;
pingCallback?.Invoke(new ServerPingResponse(true, sw.ElapsedMilliseconds));
}
else
{
waitingOnPing = false;
pingCallback?.Invoke(new ServerPingResponse(true, sw.ElapsedMilliseconds));
}
}
};
bool connectionClosed = false;
conn.OnConnectionClosed += (sender, args) =>
{
connectionClosed = true;
ar.Set();
};
conn.Initialize();
conn.SendPacket(new HandshakePacket()
{
NextState = ConnectionState.Status,
ServerAddress = hostname,
ServerPort = port,
ProtocolVersion = JavaProtocol.ProtocolVersion
});
conn.ConnectionState = ConnectionState.Status;
conn.SendPacket(new RequestPacket());
if (await WaitHandleHelpers.FromWaitHandle(ar, TimeSpan.FromMilliseconds(10000)) &&
!connectionClosed && jsonResponse != null)
{
long timeElapsed = sw.ElapsedMilliseconds;
// Log.Debug($"Server json: " + jsonResponse);
var query = ServerQuery.FromJson(jsonResponse);
if (pingCallback != null)
{
conn.SendPacket(new PingPacket()
{
Payload = pingId,
});
sw.Restart();
}
var r = new ServerQueryStatus()
{
Delay = timeElapsed,
Success = true,
WaitingOnPing = pingCallback != null && !waitingOnPing,
EndPoint = endPoint,
Address = hostname,
Port = port,
Query = query
};
statusCallBack?.Invoke(new ServerQueryResponse(true, r));
}
else
{
statusCallBack?.Invoke(new ServerQueryResponse(false, "multiplayer.status.cannot_connect",
new ServerQueryStatus()
{
EndPoint = endPoint,
Delay = sw.ElapsedMilliseconds,
Success = false,
/* Motd = motd.MOTD,
* ProtocolVersion = motd.ProtocolVersion,
* MaxNumberOfPlayers = motd.MaxPlayers,
* Version = motd.ClientVersion,
* NumberOfPlayers = motd.Players,*/
Address = hostname,
Port = port,
WaitingOnPing = false
}));
}
}
}
}
}
catch (Exception ex)
{
if (sw.IsRunning)
{
sw.Stop();
}
Log.Error($"Could not get server query result! Exception: {ex.ToString()}");
string msg = ex.Message;
if (ex is SocketException)
{
msg = $"multiplayer.status.cannot_connect";
}
statusCallBack?.Invoke(new ServerQueryResponse(false, msg, new ServerQueryStatus()
{
Delay = sw.ElapsedMilliseconds,
Success = false,
EndPoint = endPoint,
Address = hostname,
Port = port
}));
}
finally
{
//conn?.Stop();
//conn?.Dispose();
//conn?.Dispose();
// client?.Close();
}
}
private static async Task QueryJavaServerAsync(ServerConnectionDetails connectionDetails, PingServerDelegate pingCallback, ServerStatusDelegate statusCallBack)
{
CancellationTokenSource cts = new CancellationTokenSource(10000);
using TcpClient client = new TcpClient();
IPEndPoint endPoint = null;
var sw = Stopwatch.StartNew();
string jsonResponse = null;
try
{
bool waitingOnPing = true;
await client.ConnectAsync(connectionDetails.EndPoint.Address, connectionDetails.EndPoint.Port);
endPoint = client.Client.RemoteEndPoint as IPEndPoint;
if (client.Connected)
{
//conn = new NetConnection(Direction.ClientBound, client.Client);
//conn.LogExceptions = false;
using (var conn = new NetConnection(PacketDirection.ClientBound, client.Client)
{
LogExceptions = true
})
{
long pingId = Rnd.NextUInt();
long pingResult = 0;
EventWaitHandle ar = new EventWaitHandle(false, EventResetMode.AutoReset);
conn.OnPacketReceived += (sender, args) =>
{
if (args.Packet is ResponsePacket responsePacket)
{
jsonResponse = responsePacket.ResponseMsg;
if (pingCallback != null)
{
conn.SendPacket(new PingPacket()
{
Payload = pingId,
});
sw.Restart();
}
ar.Set();
}
else if (args.Packet is PingPacket pong)
{
pingResult = sw.ElapsedMilliseconds;
if (pong.Payload == pingId)
{
waitingOnPing = false;
pingCallback?.Invoke(new ServerPingResponse(true, sw.ElapsedMilliseconds));
}
else
{
waitingOnPing = false;
pingCallback?.Invoke(new ServerPingResponse(true, sw.ElapsedMilliseconds));
}
ar.Set();
}
};
bool connectionClosed = false;
conn.OnConnectionClosed += (sender, args) =>
{
if (!cts.IsCancellationRequested)
{
cts.Cancel();
}
connectionClosed = true;
ar.Set();
};
conn.Initialize();
conn.SendPacket(new HandshakePacket()
{
NextState = ConnectionState.Status,
ServerAddress = connectionDetails.Hostname,
ServerPort = (ushort)connectionDetails.EndPoint.Port,
ProtocolVersion = JavaProtocol.ProtocolVersion
});
conn.ConnectionState = ConnectionState.Status;
conn.SendPacket(new RequestPacket());
if (await WaitHandleHelpers.FromWaitHandle(ar, TimeSpan.FromMilliseconds(10000), cts.Token) &&
!connectionClosed && jsonResponse != null)
{
long timeElapsed = sw.ElapsedMilliseconds;
// Log.Debug($"Server json: " + jsonResponse);
var query = ServerQuery.FromJson(jsonResponse);
if (query.Version.Protocol == JavaProtocol.ProtocolVersion)
{
query.Version.Compatibility = CompatibilityResult.Compatible;
}
else if (query.Version.Protocol < JavaProtocol.ProtocolVersion)
{
query.Version.Compatibility = CompatibilityResult.OutdatedServer;
}
else if (query.Version.Protocol > JavaProtocol.ProtocolVersion)
{
query.Version.Compatibility = CompatibilityResult.OutdatedClient;
}
var r = new ServerQueryStatus()
{
Delay = timeElapsed,
Success = true,
WaitingOnPing = pingCallback != null && waitingOnPing,
EndPoint = endPoint,
Address = connectionDetails.Hostname,
Port = (ushort)connectionDetails.EndPoint.Port,
Query = query
};
statusCallBack?.Invoke(new ServerQueryResponse(true, r));
if (waitingOnPing && pingCallback != null)
{
await WaitHandleHelpers.FromWaitHandle(ar, TimeSpan.FromSeconds(1000));
}
}
else
{
statusCallBack?.Invoke(new ServerQueryResponse(false, "multiplayer.status.cannot_connect",
new ServerQueryStatus()
{
EndPoint = endPoint,
Delay = sw.ElapsedMilliseconds,
Success = false,
/* Motd = motd.MOTD,
* ProtocolVersion = motd.ProtocolVersion,
* MaxNumberOfPlayers = motd.MaxPlayers,
* Version = motd.ClientVersion,
* NumberOfPlayers = motd.Players,*/
Address = connectionDetails.Hostname,
Port = (ushort)connectionDetails.EndPoint.Port,
WaitingOnPing = false
}));
}
}
}
}
catch (Exception ex)
{
cts.Cancel();
if (sw.IsRunning)
{
sw.Stop();
}
// client?.Dispose();
string msg = ex.Message;
if (ex is SocketException)
{
msg = $"multiplayer.status.cannot_connect";
}
else
{
Log.Error(ex, $"Could not get server query result!");
}
statusCallBack?.Invoke(new ServerQueryResponse(false, msg, new ServerQueryStatus()
{
Delay = sw.ElapsedMilliseconds,
Success = false,
EndPoint = endPoint,
Address = connectionDetails.Hostname,
Port = (ushort)connectionDetails.EndPoint.Port
}));
}
finally
{
//conn?.Stop();
//conn?.Dispose();
//conn?.Dispose();
// client?.Close();
}
}
public GlobalGenerator(uint seed)
{
_random = new FastRandom(seed);
_sysRand = new System.Random((int)seed);
_heightMap0 = new SimplexNoise2D(_random.NextUInt());
}