if (validFieldViewCoord == null) {
validFieldViewCoord = new Coordinate(x, y);
}
fieldViews[x][y] =
new QuadIsoLayeredFieldView(new Coordinate(x, y), nationInfo, quadMap,
isoRegistry.getSubRegistry("fieldviews"),
isoTilesImageSet,
new Coordinate(2 * halfCellWidth,
4 * halfCellHeight),
this, nationInfo.getGameData());