protected override void ClientWrite(VRage.Library.Collections.BitStream stream,EndpointId forClient, uint timestamp, int maxBitPosition)
        {
            base.ClientWrite(stream,forClient,timestamp,maxBitPosition);

            stream.Write(Entity.WorldMatrix.Translation);

            MyShipController controller = MySession.Static.ControlledEntity as MyShipController;
            stream.WriteBool(m_grid != null && controller != null);
            if (m_grid != null && controller != null)
            {
                stream.WriteBool(m_grid.IsStatic);
                if (m_grid.IsStatic == false)
                {
                    stream.WriteBool(controller != null);
                    if (controller != null)
                    {
                        stream.WriteInt64(controller.EntityId);

                        Vector2 rotation = controller.RotationIndicator;
                        stream.WriteFloat(rotation.X);
                        stream.WriteFloat(rotation.Y);

                        stream.WriteHalf(controller.RollIndicator);

                        Vector3 position = controller.MoveIndicator;
                        stream.WriteHalf(position.X);
                        stream.WriteHalf(position.Y);
                        stream.WriteHalf(position.Z);

                        Vector3D gridPosition = m_grid.PositionComp.GetPosition();
                        MyGridPhysicsStateGroup.WriteSubgrids(m_grid, stream, ref forClient, timestamp, maxBitPosition, m_lowPositionOrientation, ref gridPosition, ref m_currentSentPosition);
                    }
                }
            }
        }
        protected override void ClientWrite(VRage.Library.Collections.BitStream stream, EndpointId forClient, uint timestamp, int maxBitPosition)
        {
            base.ClientWrite(stream, forClient,timestamp,maxBitPosition);

            stream.WriteBool(m_character != null);
            if (m_character != null)
            {

                stream.WriteBool(m_supportPhysics != null);
                if (m_supportPhysics != null)
                {
                    stream.WriteInt64(m_supportPhysics.Entity.EntityId);
                    stream.Write(m_supportPhysics.Entity.PositionComp.GetPosition());
                }
                
                Vector3 position = m_character.MoveIndicator;
                stream.WriteHalf(position.X);
                stream.WriteHalf(position.Y);
                stream.WriteHalf(position.Z);

                Vector2 rotate = m_character.RotationIndicator;
                stream.WriteFloat(rotate.X);
                stream.WriteFloat(rotate.Y);

                stream.WriteFloat(m_character.RollIndicator);

                // Movement state, 2B
                stream.WriteUInt16((ushort)m_character.GetNetworkMovementState());
                // Movement flag.
                stream.WriteUInt16((ushort)m_character.PreviousMovementFlags);

                // Flags, 6 bits
                bool hasJetpack = m_character.JetpackComp != null;
                stream.WriteBool(hasJetpack ? m_character.JetpackComp.TurnedOn : false);
                stream.WriteBool(hasJetpack ? m_character.JetpackComp.DampenersTurnedOn : false);
                stream.WriteBool(m_character.LightEnabled); // TODO: Remove
                stream.WriteBool(m_character.ZoomMode == MyZoomModeEnum.IronSight);
                stream.WriteBool(m_character.RadioBroadcaster.WantsToBeEnabled); // TODO: Remove
                stream.WriteBool(m_character.TargetFromCamera);
                stream.WriteFloat(m_character.HeadLocalXAngle);
                stream.WriteFloat(m_character.HeadLocalYAngle);
            }        
           
        }
 protected override void CustomServerWrite(uint timeStamp, ulong clientId, VRage.Library.Collections.BitStream stream)
 {
     stream.WriteBool(m_support != null);
     if (m_support != null)
     {
         stream.WriteInt64(m_support.EntityId);
         stream.Write(m_support.PositionComp.GetPosition());
     }
 }
        void ServerWrite(VRage.Library.Collections.BitStream stream, ulong clientId)
        {
            bool clientUpdate = m_clientUpdateFlag[clientId];
            stream.WriteBool(clientUpdate);
            if (clientUpdate)
            {
                ClientData clientData = m_serverClientData[clientId];
                m_clientUpdateFlag[clientId] = false;

                stream.WriteUInt32(clientData.TimeStamp);

                MyTransformD serverData = new MyTransformD(Entity.WorldMatrix);


                //rotation is calculated same way for both
                Quaternion serverRotation = serverData.Rotation;
                serverRotation.Normalize();
                clientData.Transform.Rotation.Normalize();

                MyTimeStampValues delta = new MyTimeStampValues();

                serverRotation = Quaternion.Inverse(serverRotation);
                Quaternion.Multiply(ref clientData.Transform.Rotation, ref serverRotation, out delta.Transform.Rotation);

                bool applyRotation = false;
                double eps = 0.001;
                if (Math.Abs(Quaternion.Dot(clientData.Transform.Rotation, serverData.Rotation)) < 1 - eps)
                {
                    applyRotation = true;
                }

                bool isValidPosition = true;
                bool correctServerPosition = false;

                CalculatePositionDifference(clientId, out isValidPosition, out correctServerPosition, out delta.Transform.Position);

                bool isValidClientPosition = isValidPosition;

                if ((correctServerPosition && isValidPosition) || applyRotation)
                {
                    MatrixD matrix = Entity.WorldMatrix;
                    MatrixD correctionMatrix = MatrixD.Multiply(matrix.GetOrientation(), delta.Transform.TransformMatrix);
                    correctionMatrix.Translation += Entity.WorldMatrix.Translation;

                    if (correctServerPosition)
                    {
                        isValidClientPosition = IsPositionValid(new MyTransformD(correctionMatrix));
                    }

                    if (isValidClientPosition)
                    {
                        Entity.PositionComp.SetWorldMatrix(correctionMatrix, null, true);
                        MyEntityPhysicsStateGroup support = MySupportHelper.FindPhysics(Entity);
                        if (support != null && support.MoveHandler != null)
                        {
                            support.MoveHandler(ref matrix, ref correctionMatrix);
                        }
                    }
                    else if (applyRotation)
                    {
                        correctionMatrix.Translation = Entity.WorldMatrix.Translation;
                        Entity.PositionComp.SetWorldMatrix(correctionMatrix, null, true);
                    }

                }

                stream.WriteBool(!isValidClientPosition);

                if (!isValidClientPosition)
                {
                    serverData = new MyTransformD(Entity.WorldMatrix);
                    stream.Write(serverData.Position);

                    CustomServerWrite(m_serverClientData[clientId].TimeStamp, clientId, stream);
                }
            }

            stream.Write(Entity.Physics != null ? Entity.Physics.LinearVelocity * MyEntityPhysicsStateGroup.EffectiveSimulationRatio : Vector3.Zero);
            stream.Write(Entity.Physics != null ? Entity.Physics.AngularVelocity * MyEntityPhysicsStateGroup.EffectiveSimulationRatio : Vector3.Zero);           
        }
 protected virtual void ClientWrite(VRage.Library.Collections.BitStream stream, EndpointId forClient, uint timestamp, int maxBitPosition)
 {
     MatrixD matrix = Entity.WorldMatrix;
     stream.WriteQuaternionNorm(Quaternion.CreateFromForwardUp(matrix.Forward, matrix.Up));
     stream.Write(matrix.Translation);
 }
 protected override void CustomServerWrite(uint timeStamp, VRage.Library.Collections.BitStream stream)
 {
     MyEntity support = MySupportHelper.FindSupportForCharacterAABB(m_character);
     stream.WriteBool(support != null);
     if (support != null)
     {
         stream.WriteInt64(support.EntityId);
         Vector3D pos = support.PositionComp.GetPosition() - m_character.PositionComp.GetPosition();
         stream.Write(pos);
         stream.Write(support.PositionComp.GetPosition());
     }
 }
        void ServerWrite(VRage.Library.Collections.BitStream stream, ulong clientId)
        {
            stream.WriteUInt32(m_serverClientData[clientId]);
            var matrix = Entity.WorldMatrix;
            stream.Write(matrix.Translation);
            stream.WriteQuaternionNorm(Quaternion.CreateFromForwardUp(matrix.Forward, matrix.Up));
            //HalfVector3 linear = Entity.Physics != null ? Vector3.Round(Entity.Physics.LinearVelocity * MyEntityPhysicsStateGroup.EffectiveSimulationRatio, MyEntityPhysicsStateGroup.NUM_DECIMAL_PRECISION) : Vector3.Zero;
            Vector3 linear = Entity.Physics != null ? Entity.Physics.LinearVelocity * MyEntityPhysicsStateGroup.EffectiveSimulationRatio : Vector3.Zero;
            stream.Write(linear);

            Vector3 angular = Entity.Physics != null ? Entity.Physics.AngularVelocity * MyEntityPhysicsStateGroup.EffectiveSimulationRatio : Vector3.Zero;
            stream.Write(angular);

            m_clientUpdateFlag[clientId] = false;
            CustomServerWrite(m_serverClientData[clientId], stream);
        }