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            float Y = Math.Abs((float)(iSpeed * Math.Cos(v3Rotation.Z)));
            float X = Math.Abs((float)(iSpeed * Math.Sin(v3Rotation.Z)));
            float fAngle = Math.Abs((float)(v3Rotation.Z % (2 * Math.PI)));

            if(fAngle > Math.PI && fAngle < Math.PI*2)
            {
                X *= -1;
            }
            else if (fAngle > Math.PI && fAngle < Math.PI *2 *.75)
            {
                X *= -1;
                Y *= -1;
            }
            else if (fAngle > Math.PI * 2 * .75 && fAngle < Math.PI * 2)
            {
                Y *= -1;
            }

            v3Position.X += X;
            v3Position.Y += Y;