private static void SendRotation( Entity3d target, float delta )
        {
            float s = ( float )Math.Atan2( target.Ahead.Z, target.Ahead.X );
            s = Utils.Wrap( s + delta, 0, ( float )( 2 * Math.PI ) );

            target.HandleMessage( new RotateXzRequest( s ) );
        }
 /// <summary>
 /// Sends a movement message to the specified target
 /// </summary>
 private static void SendMovement( Entity3d target, Vector3 move )
 {
     //	Turn movement into units per second (irrespective of clock update rate)
     move *= ( float )TinyTime.ToSeconds( target.CurrentPosition.LastStepInterval );
     target.HandleMessage( new MovementXzRequest( move.X, move.Z ) );
 }