CheckerTask.java

package us.crast.mondochest;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Map;

import org.bukkit.util.BlockVector;

import us.crast.utils.CollectionUtil;

public class CheckerTask implements Runnable {
    private static final int DEADLINE_MS = 50;
    private MondoChest plugin;
    private ArrayList<TaskEntry> tasks = new ArrayList<TaskEntry>();
    private int currentIndex;

    public CheckerTask(MondoChest plugin) {
        this.plugin = plugin;
        fillTasks();
    }
    
    private void fillTasks() {
        for (Map<BlockVector, BankSet> worldBanks : plugin.getBankManager().getBanks().values()) {
            for (Map.Entry<BlockVector, BankSet> entry: worldBanks.entrySet()) {
                BankSet bank = entry.getValue();
                for (ChestManager cm : bank.allChestManagers()) {
                    tasks.add(new TaskEntry(bank, cm));
                }
            }
        }
        // Sort the tasks by world and block location to keep things in similar chunks together
        Collections.sort(tasks);
        currentIndex = tasks.size();
    }

    @Override
    public void run() {
        long deadline = System.currentTimeMillis() + DEADLINE_MS;
        while (--currentIndex >= 0) {
            TaskEntry task = tasks.get(currentIndex);
            // Going to re-check stuff here
            if (System.currentTimeMillis() > deadline) {
                // re-schedule me for later
                break;
            }
        }
    }

}

class TaskEntry implements Comparable<TaskEntry> {
    public BankSet bank;
    public ChestManager chest;

    TaskEntry(BankSet bank, ChestManager chest) {
        this.bank = bank;
        this.chest = chest;
    }
    
    public Integer getChunkX() {
        return chest.getChest1().getBlockX() / 16;
    }
    
    public Integer getChunkZ() {
        return chest.getChest1().getBlockZ() / 16;
    }

    @Override
    public int compareTo(TaskEntry other) {
        if (other == null) { 
            return 1; 
        }
        int result = bank.getWorld().compareTo(other.bank.getWorld());
        if (result != 0) return result;
        result = getChunkX().compareTo(other.getChunkX());
        if (result != 0) return result;
        result = getChunkZ().compareTo(other.getChunkZ());
        return result;
    }
}