}
if (notifyAndLight) {
world.func_147451_t(x, y, z);
world.markBlockForUpdate(x, y, z);
world.notifyBlockChange(x, y, z, Block.getBlockById(previousId));
Block mcBlock = Block.getBlockById(previousId);
if (mcBlock != null && mcBlock.hasComparatorInputOverride()) {
world.func_147453_f(x, y, z, Block.getBlockById(block.getId()));
}