Factions/src/com/massivecraft/factions/util/LazyLocation.java

package com.massivecraft.factions.util;

import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.World;

/*
 * This class provides a lazy-load Location, so that World doesn't need to be initialized
 * yet when an object of this class is created, only when the Location is first accessed.
 */

public class LazyLocation
{
	private Location location = null;
	private String worldName;
	private double x;
	private double y;
	private double z;
	private float pitch;
	private float yaw;

	public LazyLocation(Location loc)
	{
		setLocation(loc);
	}

	public LazyLocation(final String worldName, final double x, final double y, final double z)
	{
		this(worldName, x, y, z, 0, 0);
	}

	public LazyLocation(final String worldName, final double x, final double y, final double z, final float yaw, final float pitch)
	{
		this.worldName = worldName;
		this.x = x;
		this.y = y;
		this.z = z;
		this.yaw = yaw;
		this.pitch = pitch;
	}

	// This returns the actual Location
	public final Location getLocation()
	{
		// make sure Location is initialized before returning it
		initLocation();
		return location;
	}

	// change the Location
	public final void setLocation(Location loc)
	{
		this.location = loc;
		this.worldName = loc.getWorld().getName();
		this.x = loc.getX();
		this.y = loc.getY();
		this.z = loc.getZ();
		this.yaw = loc.getYaw();
		this.pitch = loc.getPitch();
	}


	// This initializes the Location
	private void initLocation()
	{
		// if location is already initialized, simply return
		if (location != null) return;

		// get World; hopefully it's initialized at this point
		World world = Bukkit.getWorld(worldName);
		if (world == null) return;

		// store the Location for future calls, and pass it on
		location = new Location(world, x, y, z, yaw, pitch);
	}


	public final String getWorldName()
	{
		return worldName;
	}

	public final double getX()
	{
		return x;
	}

	public final double getY()
	{
		return y;
	}

	public final double getZ()
	{
		return z;
	}

	public final double getPitch()
	{
		return pitch;
	}

	public final double getYaw()
	{
		return yaw;
	}
}