*/
public static int drainVis(World world, int x, int y, int z, Aspect aspect, int amount) {
int drainedAmount = 0;
WorldCoordinates drainer = new WorldCoordinates(x, y, z,
world.provider.dimensionId);
if (!nearbyNodes.containsKey(drainer)) {
calculateNearbyNodes(world, x, y, z);
}