Added option to hide player from /list /who ... login message.

This is for other plugins, that want to hide a player.
Use IEssentials.getUser(Player p).setHidden(boolean)

Essentials/src/com/earth2me/essentials/Essentials.java

@@ -320,15 +320,27 @@ public class Essentials extends JavaPlugin implements IEssentials
 				m = m.replace("{IP}", user.getAddress().toString());
 				m = m.replace("{BALANCE}", Double.toString(user.getMoney()));
 				m = m.replace("{MAILS}", Integer.toString(user.getMails().size()));
+				m = m.replace("{WORLD}", user.getLocation().getWorld().getName());
 			}
-
+			int playerHidden = 0;
-			m = m.replace("{ONLINE}", Integer.toString(getServer().getOnlinePlayers().length));
+			for (Player p : getServer().getOnlinePlayers())
+			{
+				if (getUser(p).isHidden())
+				{
+					playerHidden++;
+				}
+			}
+			m = m.replace("{ONLINE}", Integer.toString(getServer().getOnlinePlayers().length - playerHidden));
 
 			if (m.matches(".*\\{PLAYERLIST\\}.*"))
 			{
 				StringBuilder online = new StringBuilder();
 				for (Player p : getServer().getOnlinePlayers())
 				{
+					if (getUser(p).isHidden())
+					{
+						continue;
+					}
 					if (online.length() > 0)
 					{
 						online.append(", ");
@@ -563,6 +575,12 @@ public class Essentials extends JavaPlugin implements IEssentials
 
 	public User getOfflineUser(String name)
 	{
+		// Don't create a new offline user, if we already have that user loaded.
+		User u = users.get(name.toLowerCase());
+		if (u != null)
+		{
+			return u;
+		}
 		File userFolder = new File(getDataFolder(), "userdata");
 		File userFile = new File(userFolder, Util.sanitizeFileName(name) + ".yml");
 		if (userFile.exists())

Essentials/src/com/earth2me/essentials/User.java

@@ -19,6 +19,7 @@ public class User extends UserData implements Comparable<User>, IReplyTo, IUser
 	private boolean teleportRequestHere;
 	private final Teleport teleport;
 	private long lastActivity;
+	private boolean hidden = false;
 
 	User(Player base, IEssentials ess)
 	{
@@ -331,4 +332,14 @@ public class User extends UserData implements Comparable<User>, IReplyTo, IUser
 		this.setSleepingIgnored(this.isAuthorized("essentials.sleepingignored") ? true : now);
 		return now;
 	}
+
+	public boolean isHidden()
+	{
+		return hidden;
+	}
+
+	public void setHidden(boolean hidden)
+	{
+		this.hidden = hidden;
+	}
 }

Essentials/src/com/earth2me/essentials/commands/Commandgod.java

@@ -43,6 +43,10 @@ public class Commandgod extends EssentialsCommand
 		for (Player p : server.matchPlayer(name))
 		{
 			User u = ess.getUser(p);
+			if (u.isHidden()) 
+			{
+				continue;
+			}
 			boolean enabled = u.toggleGodModeEnabled();
 			u.sendMessage(Util.format("godMode", (enabled ? Util.i18n("enabled") : Util.i18n("disabled"))));
 			sender.sendMessage(Util.format("godMode",Util.format(enabled ? "godEnabledFor": "godDisabledFor", p.getDisplayName())));

Essentials/src/com/earth2me/essentials/commands/Commandheal.java

@@ -53,13 +53,17 @@ public class Commandheal extends EssentialsCommand
 	private void healOtherPlayers(Server server, CommandSender sender, String name)
 	{
 		List<Player> players = server.matchPlayer(name);
-		if(players.isEmpty())
+		if (players.isEmpty())
 		{
 			sender.sendMessage(Util.i18n("playerNotFound"));
 			return;
 		}
 		for (Player p : players)
 		{
+			if (ess.getUser(p).isHidden())
+			{
+				continue;
+			}
 			p.setHealth(20);
 			sender.sendMessage(Util.format("healOther", p.getDisplayName()));
 		}

Essentials/src/com/earth2me/essentials/commands/Commandlist.java

@@ -24,9 +24,33 @@ public class Commandlist extends EssentialsCommand
 	@Override
 	public void run(Server server, CommandSender sender, String commandLabel, String[] args) throws Exception
 	{
+		boolean showhidden = false;
+		if (sender instanceof Player)
+		{
+			if (ess.getUser(sender).isAuthorized("essentials.list.hidden"))
+			{
+				showhidden = true;
+			}
+		}
+		else
+		{
+			showhidden = true;
+		}
+		int playerHidden = 0;
+		for (Player p : server.getOnlinePlayers())
+		{
+			if (ess.getUser(p).isHidden())
+			{
+				playerHidden++;
+			}
+		}
 		charge(sender);
 		StringBuilder online = new StringBuilder();
-		online.append(ChatColor.BLUE).append("There are ").append(ChatColor.RED).append(server.getOnlinePlayers().length);
+		online.append(ChatColor.BLUE).append("There are ").append(ChatColor.RED).append(server.getOnlinePlayers().length - playerHidden);
+		if (showhidden)
+		{
+			online.append(ChatColor.GRAY).append("/").append(playerHidden);
+		}
 		online.append(ChatColor.BLUE).append(" out of a maximum ").append(ChatColor.RED).append(server.getMaxPlayers());
 		online.append(ChatColor.BLUE).append(" players online.");
 		sender.sendMessage(online.toString());
@@ -37,6 +61,10 @@ public class Commandlist extends EssentialsCommand
 			for (Player p : server.getOnlinePlayers())
 			{
 				User u = ess.getUser(p);
+				if (u.isHidden() && !showhidden)
+				{
+					continue;
+				}
 				String group = u.getGroup();
 				List<User> list = sort.get(group);
 				if (list == null)
@@ -69,6 +97,10 @@ public class Commandlist extends EssentialsCommand
 					{
 						groupString.append("§7[AFK]§f");
 					}
+					if (user.isHidden())
+					{
+						groupString.append("§7[HIDDEN]§f");
+					}
 					groupString.append(user.getDisplayName());
 				}
 				sender.sendMessage(groupString.toString());
@@ -79,7 +111,12 @@ public class Commandlist extends EssentialsCommand
 			List<User> users = new ArrayList<User>();
 			for (Player p : server.getOnlinePlayers())
 			{
-				users.add(ess.getUser(p));
+				final User u = ess.getUser(p);
+				if (u.isHidden() && !showhidden)
+				{
+					continue;
+				}
+				users.add(u);
 			}
 			Collections.sort(users);
 
@@ -100,6 +137,10 @@ public class Commandlist extends EssentialsCommand
 				{
 					onlineUsers.append("§7[AFK]§f");
 				}
+				if (user.isHidden())
+				{
+					onlineUsers.append("§7[HIDDEN]§f");
+				}
 				onlineUsers.append(user.getDisplayName());
 			}
 			sender.sendMessage(onlineUsers.toString());

Essentials/src/com/earth2me/essentials/commands/Commandmsg.java

@@ -5,6 +5,7 @@ import org.bukkit.Server;
 import org.bukkit.entity.Player;
 import com.earth2me.essentials.Console;
 import com.earth2me.essentials.IReplyTo;
+import com.earth2me.essentials.User;
 import com.earth2me.essentials.Util;
 import org.bukkit.command.CommandSender;
 
@@ -52,7 +53,8 @@ public class Commandmsg extends EssentialsCommand
 		for (Player p : matches)
 		{	
 			sender.sendMessage(Util.format("msgFormat", translatedMe, p.getDisplayName(), message));
-			if (sender instanceof Player && ess.getUser(p).isIgnoredPlayer(((Player)sender).getName()))
+			final User u = ess.getUser(p);
+			if (sender instanceof Player && (u.isIgnoredPlayer(((Player)sender).getName()) || u.isHidden()))
 			{
 				continue;
 			}

Essentials/src/com/earth2me/essentials/commands/Commandpay.java

@@ -25,6 +25,10 @@ public class Commandpay extends EssentialsCommand
 		for (Player p : server.matchPlayer(args[0]))
 		{
 			User u = ess.getUser(p);
+			if (u.isHidden())
+			{
+				continue;
+			}
 			user.payUser(u, amount);
 		}
 	}

Essentials/src/com/earth2me/essentials/commands/Commandrealname.java

@@ -26,6 +26,10 @@ public class Commandrealname extends EssentialsCommand
 		for (Player p : server.getOnlinePlayers())
 		{
 			final User u = ess.getUser(p);
+			if (u.isHidden())
+			{
+				continue;
+			}
 			final String displayName = ChatColor.stripColor(u.getDisplayName()).toLowerCase();
 			if (!whois.equals(displayName)
 				&& !displayName.equals(ChatColor.stripColor(ess.getSettings().getNicknamePrefix()) + whois)

Essentials/src/com/earth2me/essentials/commands/Commandwhois.java

@@ -28,6 +28,10 @@ public class Commandwhois extends EssentialsCommand
 		for (Player p : server.getOnlinePlayers())
 		{
 			User u = ess.getUser(p);
+			if (u.isHidden())
+			{
+				continue;
+			}
 			String dn = ChatColor.stripColor(u.getNick());
 			if (!whois.equalsIgnoreCase(dn)
 				&& !whois.equalsIgnoreCase(dn.substring(prefixLength))

Essentials/src/com/earth2me/essentials/commands/EssentialsCommand.java

@@ -53,12 +53,18 @@ public abstract class EssentialsCommand implements IEssentialsCommand
 
 		for (Player p : matches)
 		{
-			if (p.getDisplayName().startsWith(args[pos]))
+			final User u = ess.getUser(p);
+			if (u.getDisplayName().startsWith(args[pos]) && (getOffline || !u.isHidden()))
 			{
-				return ess.getUser(p);
+				return u;
 			}
 		}
-		return ess.getUser(matches.get(0));
+		final User u = ess.getUser(matches.get(0));
+		if (!getOffline && u.isHidden())
+		{
+			throw new NoSuchFieldException(Util.i18n("playerNotFound"));
+		}
+		return u;
 	}
 
 	@Override