Faction homes should no longer be lost if their target world isn't already loaded when Factions loads at server startup. This is done using a new lazy-load Location container class which only initializes the Location when it's actually needed.

src/com/massivecraft/factions/Faction.java

@@ -65,16 +65,18 @@ public class Faction extends Entity implements EconomyParticipator
 	public void setDescription(String value) { this.description = value; }
 	
 	// FIELD: home
-	private Location home;
-	public void setHome(Location home) { this.home = home; }
-	public Location getHome() { confirmValidHome(); return home; }
+	private LazyLocation home;
+	public void setHome(Location home) { this.home = new LazyLocation(home); }
 	public boolean hasHome() { return this.getHome() != null; }
+	public Location getHome()
+	{
+		confirmValidHome();
+		return (this.home != null) ? this.home.getLocation() : null;
+	}
 	public void confirmValidHome()
 	{
-		if (!Conf.homesMustBeInClaimedTerritory || this.home == null || Board.getFactionAt(new FLocation(this.home)) == this)
-		{
+		if (!Conf.homesMustBeInClaimedTerritory || this.home == null || Board.getFactionAt(new FLocation(this.home.getLocation())) == this)
 			return;
-		}
 
 		msg("<b>Your faction home has been un-set since it is no longer in your territory.");
 		this.home = null;

src/com/massivecraft/factions/P.java

@@ -37,6 +37,7 @@ import com.massivecraft.factions.struct.FFlag;
 import com.massivecraft.factions.struct.FPerm;
 import com.massivecraft.factions.struct.Rel;
 import com.massivecraft.factions.util.AutoLeaveTask;
+import com.massivecraft.factions.util.LazyLocation;
 import com.massivecraft.factions.zcore.MPlugin;
 import com.massivecraft.factions.zcore.util.TextUtil;
 
@@ -131,7 +132,7 @@ public class P extends MPlugin
 		.setPrettyPrinting()
 		.disableHtmlEscaping()
 		.excludeFieldsWithModifiers(Modifier.TRANSIENT, Modifier.VOLATILE)
-		.registerTypeAdapter(Location.class, new LocationTypeAdapter())
+		.registerTypeAdapter(LazyLocation.class, new LocationTypeAdapter())
 		.registerTypeAdapter(mapFLocToStringSetType, new FLocToStringSetTypeAdapter())
 		.registerTypeAdapter(Rel.class, new RelTypeAdapter())
 		.registerTypeAdapter(FPerm.class, new FPermTypeAdapter())

src/com/massivecraft/factions/adapters/LocationTypeAdapter.java

@@ -3,8 +3,8 @@ package com.massivecraft.factions.adapters;
 import java.lang.reflect.Type;
 import java.util.logging.Level;
 
-import org.bukkit.Location;
-import org.bukkit.World;
+import com.massivecraft.factions.P;
+import com.massivecraft.factions.util.LazyLocation;
 
 import com.google.gson.JsonDeserializationContext;
 import com.google.gson.JsonDeserializer;
@@ -13,10 +13,9 @@ import com.google.gson.JsonObject;
 import com.google.gson.JsonParseException;
 import com.google.gson.JsonSerializationContext;
 import com.google.gson.JsonSerializer;
-import com.massivecraft.factions.P;
 
 
-public class LocationTypeAdapter implements JsonDeserializer<Location>, JsonSerializer<Location>
+public class LocationTypeAdapter implements JsonDeserializer<LazyLocation>, JsonSerializer<LazyLocation>
 {
 	private static final String WORLD = "world";
 	private static final String X = "x";
@@ -26,49 +25,37 @@ public class LocationTypeAdapter implements JsonDeserializer<Location>, JsonSeri
 	private static final String PITCH = "pitch";
 	
 	@Override
-	public Location deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException
+	public LazyLocation deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException
 	{
 		try
 		{
 			JsonObject obj = json.getAsJsonObject();
 
-			String worldname = obj.get(WORLD).getAsString();
-			World world = P.p.getServer().getWorld(worldname);
-			if (world == null) {
-				P.p.log(Level.WARNING, "Stored location's world \"" + worldname + "\" not found on server; dropping the location.");
-				return null;
-			}
-
+			String worldName = obj.get(WORLD).getAsString();
 			double x = obj.get(X).getAsDouble();
 			double y = obj.get(Y).getAsDouble();
 			double z = obj.get(Z).getAsDouble();
 			float yaw = obj.get(YAW).getAsFloat();
 			float pitch = obj.get(PITCH).getAsFloat();
 
-			return new Location(world, x, y, z, yaw, pitch);
+			return new LazyLocation(worldName, x, y, z, yaw, pitch);
 
 		}
 		catch (Exception ex)
 		{
 			ex.printStackTrace();
-			P.p.log(Level.WARNING, "Error encountered while deserializing a location.");
+			P.p.log(Level.WARNING, "Error encountered while deserializing a LazyLocation.");
 			return null;
 		}
 	}
 
 	@Override
-	public JsonElement serialize(Location src, Type typeOfSrc, JsonSerializationContext context) {
+	public JsonElement serialize(LazyLocation src, Type typeOfSrc, JsonSerializationContext context) {
 		JsonObject obj = new JsonObject();
 
 		try
 		{
-			if (src.getWorld() == null)
-			{
-				P.p.log(Level.WARNING, "Passed location's world was not found on the server. Dropping the location.");
-				return obj;
-			}
-
-			obj.addProperty(WORLD, src.getWorld().getName());
+			obj.addProperty(WORLD, src.getWorldName());
 			obj.addProperty(X, src.getX());
 			obj.addProperty(Y, src.getY());
 			obj.addProperty(Z, src.getZ());
@@ -76,12 +63,11 @@ public class LocationTypeAdapter implements JsonDeserializer<Location>, JsonSeri
 			obj.addProperty(PITCH, src.getPitch());
 
 			return obj;
-
 		}
 		catch (Exception ex)
 		{
 			ex.printStackTrace();
-			P.p.log(Level.WARNING, "Error encountered while serializing a location.");
+			P.p.log(Level.WARNING, "Error encountered while serializing a LazyLocation.");
 			return obj;
 		}
 	}

src/com/massivecraft/factions/cmd/CmdHome.java

@@ -58,7 +58,7 @@ public class CmdHome extends FCommand
 		
 		if ( ! myFaction.hasHome())
 		{
-			fme.msg("<b>You faction does not have a home. " + (fme.getRole().isLessThan(Rel.OFFICER) ? "<i> Ask your leader to:" : "<i>You should:"));
+			fme.msg("<b>Your faction does not have a home. " + (fme.getRole().isLessThan(Rel.OFFICER) ? "<i> Ask your leader to:" : "<i>You should:"));
 			fme.sendMessage(p.cmdBase.cmdSethome.getUseageTemplate());
 			return;
 		}

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

@@ -0,0 +1,107 @@
+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;
+	}
+}