/**
* Returns if all regions are currently not occupied by another search.
*
* @return
*/
public boolean isBoundingBoxFree() {
for (int x = westernBound; x <= easternBound; x++)
for (int y = northernBound; y <= southernBound; y++)
for (int z = upperBound; z <= lowerBound; z++)
if (!isOutsideMap(x, y, z)) if (regionGrid.isTileBlocked(x, y, z)) return false;
return true;
}
