fCraft.Session.ProcessMovementPacket C# (CSharp) Method

        void ProcessMovementPacket() {
            bytesReceived += 10;
            reader.ReadByte();
            Position newPos = new Position {
                X = IPAddress.NetworkToHostOrder( reader.ReadInt16() ),
                H = IPAddress.NetworkToHostOrder( reader.ReadInt16() ),
                Y = IPAddress.NetworkToHostOrder( reader.ReadInt16() ),
                R = reader.ReadByte(),
                L = reader.ReadByte()
            };

            Position oldPos = Player.Position;

            // calculate difference between old and new positions
            Position delta = new Position {
                X = (short)(newPos.X - oldPos.X),
                Y = (short)(newPos.Y - oldPos.Y),
                H = (short)(newPos.H - oldPos.H),
                R = (byte)Math.Abs( newPos.R - oldPos.R ),
                L = (byte)Math.Abs( newPos.L - oldPos.L )
            };

            // skip everything if player hasn't moved
            if( delta.IsZero() ) return;

            bool rotChanged = (delta.R != 0) || (delta.L != 0);

            // only reset the timer if player rotated
            // if player is just pushed around, rotation does not change (and timer should not reset)
            if( rotChanged ) Player.ResetIdleTimer();

            if( Player.Info.IsFrozen ) {
                // special handling for frozen players
                if( delta.X * delta.X + delta.Y * delta.Y > AntiSpeedMaxDistanceSquared ||
                    Math.Abs( delta.H ) > 40 ) {
                    SendNow( PacketWriter.MakeSelfTeleport( Player.Position ) );
                }
                newPos.X = Player.Position.X;
                newPos.Y = Player.Position.Y;
                newPos.H = Player.Position.H;

                // recalculate deltas
                delta.X = 0;
                delta.Y = 0;
                delta.H = 0;

            } else if( !Player.Can( Permission.UseSpeedHack ) ) {
                int distSquared = delta.X * delta.X + delta.Y * delta.Y + delta.H * delta.H;
                // speedhack detection
                if( DetectMovementPacketSpam() ) {
                    return;

                } else if( (distSquared - delta.H * delta.H > AntiSpeedMaxDistanceSquared || delta.H > AntiSpeedMaxJumpDelta) &&
                           speedHackDetectionCounter >= 0 ) {

                    if( speedHackDetectionCounter == 0 ) {
                        Player.LastValidPosition = Player.Position;
                    } else if( speedHackDetectionCounter > 1 ) {
                        DenyMovement();
                        speedHackDetectionCounter = 0;
                        return;
                    }
                    speedHackDetectionCounter++;

                } else {
                    speedHackDetectionCounter = 0;
                }
            }

            if( Server.RaisePlayerMovingEvent( Player, newPos ) ) {
                DenyMovement();
                return;
            }

            Player.Position = newPos;
            Server.RaisePlayerMovedEvent( Player, oldPos );
        }