Redstone Limiter

package com.gamebuster19901.test;

import java.util.HashSet;

import org.bukkit.block.Block;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.BlockRedstoneEvent;
import org.bukkit.plugin.java.JavaPlugin;

import net.md_5.bungee.api.ChatColor;

public final class TestPlugin extends JavaPlugin implements Listener{

    private boolean isOff = false;
    private int pauseTime = 0;
    private HashSet<Block> stoppedRedstones = new HashSet<Block>();

    private final short max_redstones = 20;

    public final void onEnable(){
        getServer().getPluginManager().registerEvents(this, this);
        getServer().getScheduler().scheduleSyncRepeatingTask(this, new Runnable(){
            public void run() {
                if (!isOff){
                    if(pauseTime != 0){
                        pauseTime--;
                        getLogger().info(pauseTime + "");
                    }
                    if (stoppedRedstones.size() != 0 && stoppedRedstones.size() - max_redstones > 0){
                        getLogger().info("Stopped " + stoppedRedstones.size() + "redstone events");
                    }
                    reset();
                }
            }
        },1,1);
        getLogger().info("Test plugin has been enabled");
    }

    public final void onDisable() {
        isOff = true;
    }

    @EventHandler
    public void onRedstone(BlockRedstoneEvent event){
        stoppedRedstones.add(event.getBlock()); //hashsets only allow one instance of an object in them, don't need to worry about duplicates!
        getLogger().info(stoppedRedstones.size() + " redstone events fired this tick so far");
        if (stoppedRedstones.size() > max_redstones && pauseTime == 0){
            event.setNewCurrent(0);
            pause(400);
        }
        else if (pauseTime != 0){
            event.setNewCurrent(0);
        }
    }

    public void reset(){
        stoppedRedstones.clear();
    }

    public void pause(int ticks){
        getLogger().info("Stopping all redstone for " + ticks + " ticks");
        pauseTime = ticks;
        for (Player p : getServer().getOnlinePlayers()){
            //if player can build in the house{
                p.sendMessage(ChatColor.RED + "Oh no, your house has Overheated! Redstone in your house has been disabled for " + ChatColor.BOLD + ChatColor.RED + ticks / 20 + ChatColor.RESET + ChatColor.RED + " seconds.");
                p.sendMessage(ChatColor.RED + "To prevent this from happening again, make sure less than " + max_redstones + " redstone blocks change per tick!");
        }
    }
}