[Basic] Detecting Redstone power on normal blocks

I haven't been able to find any thing on redstone events in the resources section, so i thought i may as well write a little tutorial.

First you need to register the Redstone_Change event:

Code:

Bukkit.getServer().getPluginManager().registerEvent(Event.Type.REDSTONE_CHANGE,(new RedstoneClass()),Event.Priority.Normal, this)

Then you need to create a new blocklistener class and have the following:

Code:

    public void    onBlockRedstoneChange(BlockRedstoneEvent event){
        Block block = event.getBlock();
        for (Block b : SurroundingBlocks(block)){
            if (CheckBlock(b)){
            if (b.isBlockIndirectlyPowered()){
                // Do something when block is powered
                //eg. set to gold
                b.setType(Material.GOLD_BLOCK);

            }
            else{
                //Do something when block is not powered
            }}
        }
        }

You can do this many different ways but i decided it would be best to get all of the surrounding blocks like so:

Code:

        public ArrayList<Block> SurroundingBlocks(Block block){
            ArrayList<Block> Blocks = new ArrayList<Block>();
            for (BlockFace face : BlockFace.values()){
            if (face == BlockFace.UP){
            Block above = block.getRelative(BlockFace.UP);
            Block above2 = above.getRelative(BlockFace.UP);
            Blocks.add(above);
            Blocks.add(above2);}
            Blocks.add(block.getRelative(face));
            }
            return Blocks;
        }

And then you need to create a way to check if the block is the correct type you want to edit:

Code:

    public boolean CheckBlock(Block block){
        // Check if the block matches the one your testing
         //e.g test if the block is dirt
         if (block.getType() == Material.DIRT){
             return true;
         }
         return false;
        }

Hopefully you understand this because its kinda basic i didn't really know what to write so i just explained it while i was writing the code.