public static List<Location> generateSphere(Location centerBlock,
			int radius, boolean hollow) {
		List<Location> centerBlocks = new ArrayList<Location>();

		radius = 15;

		int bX = centerBlock.getBlockX();
		int bY = centerBlock.getBlockY();
		int bZ = centerBlock.getBlockZ();
		for (int x = bX - radius; x <= bX + radius; x++) {
			for (int y = bY - radius; y <= bY + radius; y++) {
				for (int z = bZ - radius; z <= bZ + radius; z++) {

					double distance = ((bX - x) * (bX - x))
							+ ((bZ - z) * (bZ - z) + ((bY - y)) * (bY - y));

					if (distance < radius * radius
							&& !(hollow && distance < ((radius - 1) * (radius - 1)))) {

						for (Location l : generateSphere(centerBlock, radius,
								hollow)) {
							Material type = meteorBlocks.get((int) (Math
									.random() * meteorBlocks.size()));
							l.getBlock().setType(type);

							centerBlocks.add(l);

						}
					}

				}

			}

		}
		return centerBlocks;
	}