TD.java

package me.kman2010.TD;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.logging.Logger;
import org.bukkit.block.Block;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.Event;
import org.bukkit.event.Event.Priority;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

public class TD extends JavaPlugin {

    private static final Logger log = Logger.getLogger("Minecraft");
    private final TDBlockListener blockListener = new TDBlockListener(this);
    private final TDEntityListener entityListener = new TDEntityListener(this);
    private final TDPlayerListener playerListener = new TDPlayerListener(this);

    public final HashMap<Player, ArrayList<Block>> tdUsers = new HashMap<Player, ArrayList<Block>>();

    public void onEnable() {
        PluginManager pm = getServer().getPluginManager();
        pm.registerEvent(Event.Type.BLOCK_PLACE, blockListener,
                Event.Priority.Normal, this);
        pm.registerEvent(Event.Type.EXPLOSION_PRIME, entityListener, Priority.Lowest, this);
        pm.registerEvent(Event.Type.PLAYER_LOGIN, playerListener,
                Event.Priority.Normal, this);

        log.info("TD 1.3 ENABLED");
    }

    public void onDisable() {
        log.info("TD 1.3 DISABLED");
    }
    public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String[] args){
        if(commandLabel.equalsIgnoreCase("TD")){

            if(sender.isOp()) {
                Player sendPlayer = (Player) sender; //We assign sendPlayer to out command sender
                if(args.length >= 1){ //We check if we have got any argument
                    Player player = getServer().getPlayer(args[0]); //We try to get the player from the argument
                    if(player == null){
                        sendPlayer.sendMessage("Oops, that player doesn't exist!"); //Ooops, we have no player!
                    }else{
                        toggleTD(player); //We toggle the TD for our player from argument
                    }

                }else{
                    toggleTD(sendPlayer); //We haven't got any arguments, let's do this on ourselves!
                }

            return true;
        }
        return false;}
        return false;
    }
    public void toggleTD(Player player){
        if(enabled(player)){
            this.tdUsers.remove(player);

            if(player.isOnline()) {
                player.sendMessage("TD Disabled");
            }
        }else{
            this.tdUsers.put(player, null);

            if(player.isOnline()) {
                player.sendMessage("TD Enabled");
            }
        }
    }
    public boolean enabled(Player player){
        return this.tdUsers.containsKey(player);
    }
}