private static void SendCommandPacket()
{
var message = new BitStream();
UserCommand?command, lastCommand = null;
// last received server message
message.WriteUInt32(_lastServerMessage);
// last received reliable message
message.WriteUInt32(_lastReliableMessage);
// current server state ID
message.WriteInt32(_svStateID);
// reliable messages
for (int i = _reliableAcknowledged + 1; i <= _reliableSequence; i++)
{
// header byte
message.WriteByte(2);
// command number
message.WriteInt32(i);
// command
message.WriteString(_reliableCommands[i & (_reliableCommands.Length - 1)]);
}
// header byte
message.WriteByte(UserCommand.CommandType);
// command count
message.WriteByte((byte)ClientInput.NumCommands);
while ((command = ClientInput.GetCommand()) != null)
{
// write a command
command.Value.Serialize(message, lastCommand);
// set the new command as base
lastCommand = command;
}
// end of command
message.WriteByte(0xFF);
// now send the command to the server
_serverChannel.SendMessage(message);
_commandSequence++;
}
public override void Handle()
{
if (Key == Keys.F11 && Down)
{
ConsoleRenderer.Active = !ConsoleRenderer.Active;
return;
}
if (ConsoleRenderer.Active && Down)
{
ConsoleRenderer.HandleKey(Key);
return;
}
//DebugCamera.HandleKey(Key, Down);
ClientInput.HandleKey(Key, Down);
}
public static void Process()
{
// update server time
_clientTime += Game.FrameMsec;
if (State != ClientState.Idle)
{
// create user command
ClientInput.CreateCommand();
// check for timeout
CheckForTimeout();
// check if a packet needs sending
CheckCommandPacket();
CheckConnectPacket();
if (State == ClientState.Ingame)
{
// set the rendering snapshot
SetRenderSnapshot();
// predict the local player's state
PredictPlayer();
// set the camera position
if (_snap != null)
{
if (_snap.LocalPlayer != null)
{
//var rotZ = MathHelper.ToRadians(_snap.LocalPlayer.Rotation.Z);
Camera.MainCamera.Position = new Vector3(_snap.LocalPlayer.Position.X, _snap.LocalPlayer.Position.Y, 10f + MathHelper.Max(_snap.LocalPlayer.Position.Z, 0f));
//Camera.MainCamera.Position += (new Vector3((float)Math.Sin(-rotZ), (float)Math.Cos(-rotZ), 0f) * -5f);
//Camera.MainCamera.ViewMatrix = Matrix.CreateLookAt(Camera.MainCamera.Position, new Vector3(_snap.LocalPlayer.Position.X, _snap.LocalPlayer.Position.Y, _snap.LocalPlayer.Position.Z), new Vector3(0f, 0f, 1f));
}
}
}
}
}
private static void PredictPlayer()
{
if (_snap == null || _snap.LocalPlayer == null)
{
return;
}
PlayerEntity originalPlayer = (PlayerEntity)_snap.LocalPlayer.Clone();
var predictSnap = _curSnap;
if (predictSnap == null || predictSnap.LocalPlayer == null)
{
predictSnap = _lastSnap;
if (predictSnap == null || predictSnap.LocalPlayer == null)
{
return;
}
}
_snap.LocalPlayer = (PlayerEntity)predictSnap.LocalPlayer.Clone();
int currentCommand = ClientInput.CommandID;
for (int commandNum = (currentCommand - 63); commandNum < currentCommand; commandNum++)
{
UserCommand?command = ClientInput.GetCommand(commandNum);
if (command == null)
{
continue;
}
if (command.Value.ServerTime <= predictSnap.LocalPlayer.LastCommandTime)
{
continue;
}
/*if (originalPlayer.LastCommandTime == _snap.LocalPlayer.LastCommandTime)
* {
* if (originalPlayer.Position != _snap.LocalPlayer.Position)
* {
* Log.Write(LogLevel.Trace, "prediction error (position)");
* }
*
* if (originalPlayer.Rotation != _snap.LocalPlayer.Rotation)
* {
* Log.Write(LogLevel.Trace, "prediction error (rotation)");
* }
*
* Vector3 deltaPos = originalPlayer.Position - _snap.LocalPlayer.Position;
* Vector3 deltaRot = originalPlayer.Rotation - _snap.LocalPlayer.Rotation;
*
* if (deltaPos.LengthSquared() > 0.01f)
* {
* Log.Write(LogLevel.Trace, "prediction miss (position, len {0})", deltaPos.Length());
*
* uint t = _clientTime - _predictedErrorPosTime;
* float f = (100f - t) / 100f;
*
* if (f < 0)
* {
* f = 0;
* }
*
* _predictedErrorPos *= f;
* _predictedErrorPos += deltaPos;
* _predictedErrorPosTime = _oldTime;
* }
* }*/
PlayerMovement.Process((PlayerEntity)_snap.LocalPlayer, command.Value, Server.PhysicsWorld);
}
/*
* // correct for errors accumulated above
* {
* uint t = _clientTime - _predictedErrorPosTime;
* float f = (100f - t) / 100f;
*
* if (f > 0 && f < 1)
* {
* _snap.LocalPlayer.Position *= f;
* _snap.LocalPlayer.Position += _predictedErrorPos;
* }
* else
* {
* _predictedErrorPosTime = 0;
* }
* }
*/
_oldTime = _clientTime;
}