private static void expandPortal( World world, int i, int j, int k, Collection<ChunkCoordinates> set, Stack<ChunkCoordinates> created) { if (!world.isAirBlock(i, j, k)) { return; } int score = isValidLinkPortalBlock(world.getBlock(i + 1, j, k)) + isValidLinkPortalBlock(world.getBlock(i - 1, j, k)) + isValidLinkPortalBlock(world.getBlock(i, j + 1, k)) + isValidLinkPortalBlock(world.getBlock(i, j - 1, k)) + isValidLinkPortalBlock(world.getBlock(i, j, k + 1)) + isValidLinkPortalBlock(world.getBlock(i, j, k - 1)); if (score > 1) { world.setBlock(i, j, k, NailedBlocks.portal, 0, 0); created.push(new ChunkCoordinates(i, j, k)); addSurrounding(set, i, j, k); } }