private void writeEnemyZone(XmlTextWriter writer, EnemySpawnZone esz)
 {
     writer.WriteStartElement("enemySpawnZone");
     writer.WriteAttributeString("zone", esz.getZone().toXML());
     writer.WriteAttributeString("enemy", esz.getEnemyName());
     writer.WriteAttributeString("count", esz.getTotalSpawns().ToString());
     writer.WriteEndElement();
 }