AlttdGriefPrevention/src/me/ryanhamshire/GriefPrevention/PlayerRescueTask.java

/*
    GriefPrevention Server Plugin for Minecraft
    Copyright (C) 2012 Ryan Hamshire

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package me.ryanhamshire.GriefPrevention;

import org.bukkit.Location;
import org.bukkit.entity.Player;

//tries to rescue a trapped player from a claim where he doesn't have permission to save himself
//related to the /trapped slash command
//this does run in the main thread, so it's okay to make non-thread-safe calls
class PlayerRescueTask implements Runnable 
{
	//original location where /trapped was used
	private Location location;
	
	//rescue destination, may be decided at instantiation or at execution
    private Location destination;
	
	//player data
	private Player player;
	
	public PlayerRescueTask(Player player, Location location, Location destination)
	{
		this.player = player;
		this.location = location;
		this.destination = destination;
	}
	
	@Override
	public void run()
	{
		//if he logged out, don't do anything
		if(!player.isOnline()) return;
		
		//he no longer has a pending /trapped slash command, so he can try to use it again now
		PlayerData playerData = GriefPrevention.instance.dataStore.getPlayerData(player.getUniqueId());
		playerData.pendingTrapped = false;
		
		//if the player moved three or more blocks from where he used /trapped, admonish him and don't save him
		if(player.getLocation().distance(this.location) > 3)
		{
			GriefPrevention.sendMessage(player, TextMode.Err, Messages.RescueAbortedMoved);
			return;
		}
		
		//otherwise find a place to teleport him
		if(this.destination == null)
		{
		    this.destination = GriefPrevention.instance.ejectPlayer(this.player);
		}
		else
		{
		    player.teleport(this.destination);
		}
		
		//log entry, in case admins want to investigate the "trap"
		GriefPrevention.AddLogEntry("Rescued trapped player " + player.getName() + " from " + GriefPrevention.getfriendlyLocationString(this.location) + " to " + GriefPrevention.getfriendlyLocationString(this.destination) + ".");		
	}
}