Recoding TeleporterMixin

src/com/massivecraft/mcore/Conf.java

@@ -5,6 +5,8 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 
+import org.bukkit.permissions.Permissible;
+
 import com.massivecraft.mcore.cmd.CmdMcore;
 import com.massivecraft.mcore.usys.cmd.CmdUsys;
 import com.massivecraft.mcore.util.MUtil;
@@ -35,6 +37,12 @@ public class Conf extends SimpleConfig
 		return ret;
 	}
 	
+	public static int getTpdelay(Permissible permissible)
+	{
+		if (Permission.NOTPDELAY.has(permissible, false)) return 0;
+		return Math.max(tpdelay, 0); 
+	}
+	
 	// -------------------------------------------- //
 	// META
 	// -------------------------------------------- //

src/com/massivecraft/mcore/MCore.java

@@ -24,6 +24,7 @@ import com.massivecraft.mcore.store.MStore;
 import com.massivecraft.mcore.usys.AspectColl;
 import com.massivecraft.mcore.usys.MultiverseColl;
 import com.massivecraft.mcore.usys.cmd.CmdUsys;
+import com.massivecraft.mcore.util.FirstTeleportUtil;
 import com.massivecraft.mcore.util.PlayerUtil;
 import com.massivecraft.mcore.util.TimeDiffUtil;
 import com.massivecraft.mcore.util.TimeUnit;
@@ -115,6 +116,7 @@ public class MCore extends MPlugin
 		// Register events
 		InternalListener.get().setup();
 		ScheduledTeleportEngine.get().setup();
+		FirstTeleportUtil.get().setup();
 		
 		// Schedule the collection ticker.
 		Bukkit.getScheduler().scheduleSyncRepeatingTask(this, this.collTickTask, 1, 1);

src/com/massivecraft/mcore/event/MCorePlayerPSTeleportEvent.java

@@ -1,8 +1,6 @@
 package com.massivecraft.mcore.event;
 
 import org.bukkit.Bukkit;
-import org.bukkit.Location;
-import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
 import org.bukkit.event.Event;
 import org.bukkit.event.HandlerList;
@@ -27,11 +25,11 @@ public class MCorePlayerPSTeleportEvent extends Event implements Cancellable, Ru
 	@Override public boolean isCancelled() { return this.cancelled; }
 	@Override public void setCancelled(boolean cancelled) { this.cancelled = cancelled; }
 	
-	private final Player player;
+	private final String teleporteeId;
-	public Player getPlayer() { return this.player; }
+	public String getTeleporteeId() { return this.teleporteeId; }
 	
-	private final Location from;
+	private final PS from;
-	public Location getFrom() { return this.from; }
+	public PS getFrom() { return this.from; }
 	
 	private PS to;
 	public PS getTo() { return this.to; }
@@ -41,9 +39,9 @@ public class MCorePlayerPSTeleportEvent extends Event implements Cancellable, Ru
 	// CONSTRUCT
 	// -------------------------------------------- //
 	
-	public MCorePlayerPSTeleportEvent(Player player, Location from, PS to)
+	public MCorePlayerPSTeleportEvent(String teleporteeId, PS from, PS to)
 	{
-		this.player = player;
+		this.teleporteeId = teleporteeId;
 		this.from = from;
 		this.to = to;
 	}

src/com/massivecraft/mcore/mixin/Mixin.java

@@ -296,18 +296,6 @@ public class Mixin
 	{
 		getTeleportMixin().teleport(teleportee, destinationPs, destinationDesc, delayPermissible);
 	}
-	public static void teleport(Player teleportee, PS destinationPs, String destinationDesc, Permissible delayPermissible, CommandSender otherSender, String otherPerm) throws TeleporterException
-	{
-		getTeleportMixin().teleport(teleportee, destinationPs, destinationDesc, delayPermissible, otherSender, otherPerm);
-	}
-	public static void teleport(Player teleportee, PS destinationPs, String destinationDesc, CommandSender otherSender, String otherPerm) throws TeleporterException
-	{
-		getTeleportMixin().teleport(teleportee, destinationPs, destinationDesc, otherSender, otherPerm);
-	}
-	public static void teleport(Player teleportee, PS destinationPs, String destinationDesc, int delaySeconds, CommandSender otherSender, String otherPerm) throws TeleporterException
-	{
-		getTeleportMixin().teleport(teleportee, destinationPs, destinationDesc, delaySeconds, otherSender, otherPerm);
-	}
 	public static void teleport(Player teleportee, PS destinationPs, String destinationDesc, int delaySeconds) throws TeleporterException
 	{
 		getTeleportMixin().teleport(teleportee, destinationPs, destinationDesc, delaySeconds);
@@ -325,18 +313,6 @@ public class Mixin
 	{
 		getTeleportMixin().teleport(teleporteeId, destinationPs, destinationDesc, delayPermissible);
 	}
-	public static void teleport(String teleporteeId, PS destinationPs, String destinationDesc, Permissible delayPermissible, CommandSender otherSender, String otherPerm) throws TeleporterException
-	{
-		getTeleportMixin().teleport(teleporteeId, destinationPs, destinationDesc, delayPermissible, otherSender, otherPerm);
-	}
-	public static void teleport(String teleporteeId, PS destinationPs, String destinationDesc, CommandSender otherSender, String otherPerm) throws TeleporterException
-	{
-		getTeleportMixin().teleport(teleporteeId, destinationPs, destinationDesc, otherSender, otherPerm);
-	}
-	public static void teleport(String teleporteeId, PS destinationPs, String destinationDesc, int delaySeconds, CommandSender otherSender, String otherPerm) throws TeleporterException
-	{
-		getTeleportMixin().teleport(teleporteeId, destinationPs, destinationDesc, delaySeconds, otherSender, otherPerm);
-	}
 	public static void teleport(String teleporteeId, PS destinationPs, String destinationDesc, int delaySeconds) throws TeleporterException
 	{
 		getTeleportMixin().teleport(teleporteeId, destinationPs, destinationDesc, delaySeconds);

src/com/massivecraft/mcore/mixin/ScheduledTeleport.java

@@ -1,7 +1,5 @@
 package com.massivecraft.mcore.mixin;
 
-import org.bukkit.entity.Player;
-
 import com.massivecraft.mcore.PS;
 
 public class ScheduledTeleport implements Runnable
@@ -10,8 +8,8 @@ public class ScheduledTeleport implements Runnable
 	// FIELDS & RAW-DATA ACCESS
 	// -------------------------------------------- //
 	
-	private final Player teleportee;
+	private final String teleporteeId;
-	public Player getTeleportee() { return this.teleportee; }
+	public String getTeleporteeId() { return this.teleporteeId; }
 	
 	private final PS destinationPs;
 	public PS getDestinationPs() { return this.destinationPs; }
@@ -31,9 +29,9 @@ public class ScheduledTeleport implements Runnable
 	// CONSTRUCT
 	// -------------------------------------------- //
 	
-	public ScheduledTeleport(Player teleportee, PS destinationPs, String destinationDesc, int delaySeconds)
+	public ScheduledTeleport(String teleporteeId, PS destinationPs, String destinationDesc, int delaySeconds)
 	{
-		this.teleportee = teleportee;
+		this.teleporteeId = teleporteeId;
 		this.destinationPs = destinationPs;
 		this.destinationDesc = destinationDesc;
 		this.delaySeconds = delaySeconds;
@@ -67,14 +65,14 @@ public class ScheduledTeleport implements Runnable
 	public void run()
 	{
 		this.unschedule();
-		if (!teleportee.isOnline()) return;
+		
 		try
 		{
-			Mixin.teleport(this.teleportee, this.destinationPs, this.destinationDesc);
+			Mixin.teleport(this.getTeleporteeId(), this.getDestinationPs(), this.getDestinationDesc());
 		}
 		catch (TeleporterException e)
 		{
-			this.teleportee.sendMessage(e.getMessage());
+			Mixin.message(this.getTeleporteeId(), e.getMessage());
 		}
 	}
 	

src/com/massivecraft/mcore/mixin/ScheduledTeleportEngine.java

@@ -4,7 +4,6 @@ import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
 import org.bukkit.Bukkit;
-import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
@@ -12,6 +11,7 @@ import org.bukkit.event.player.PlayerMoveEvent;
 
 import com.massivecraft.mcore.MCore;
 import com.massivecraft.mcore.util.MUtil;
+import com.massivecraft.mcore.util.SenderUtil;
 
 public class ScheduledTeleportEngine implements Listener, Runnable
 {
@@ -26,19 +26,19 @@ public class ScheduledTeleportEngine implements Listener, Runnable
 	// SCHEDULED TELEPORT INDEX
 	// -------------------------------------------- //
 	
-	protected Map<Player, ScheduledTeleport> teleporteeToScheduledTeleport = new ConcurrentHashMap<Player, ScheduledTeleport>();
+	protected Map<String, ScheduledTeleport> teleporteeIdToScheduledTeleport = new ConcurrentHashMap<String, ScheduledTeleport>();
 	
 	public boolean isScheduled(ScheduledTeleport st)
 	{
-		return this.teleporteeToScheduledTeleport.containsValue(st);
+		return this.teleporteeIdToScheduledTeleport.containsValue(st);
 	}
 	
 	public ScheduledTeleport schedule(ScheduledTeleport st)
 	{
-		ScheduledTeleport old = this.teleporteeToScheduledTeleport.get(st.getTeleportee());
+		ScheduledTeleport old = this.teleporteeIdToScheduledTeleport.get(st.getTeleporteeId());
 		if (old != null) old.unschedule();
 		
-		this.teleporteeToScheduledTeleport.put(st.getTeleportee(), st);
+		this.teleporteeIdToScheduledTeleport.put(st.getTeleporteeId(), st);
 		
 		st.setDueMillis(System.currentTimeMillis() + st.getDelaySeconds()*1000);
 		
@@ -47,11 +47,11 @@ public class ScheduledTeleportEngine implements Listener, Runnable
 	
 	public boolean unschedule(ScheduledTeleport st)
 	{
-		ScheduledTeleport old = this.teleporteeToScheduledTeleport.get(st.getTeleportee());
+		ScheduledTeleport old = this.teleporteeIdToScheduledTeleport.get(st.getTeleporteeId());
 		if (old == null) return false;
 		if (old != st) return false;
 		
-		return this.teleporteeToScheduledTeleport.remove(st.getTeleportee()) != null;
+		return this.teleporteeIdToScheduledTeleport.remove(st.getTeleporteeId()) != null;
 	}
 	
 	// -------------------------------------------- //
@@ -75,14 +75,14 @@ public class ScheduledTeleportEngine implements Listener, Runnable
 		if (MUtil.isSameBlock(event.getFrom(), event.getTo())) return;
 		
 		// ... and there is a ScheduledTeleport ...
-		ScheduledTeleport scheduledTeleport = teleporteeToScheduledTeleport.get(event.getPlayer());
+		ScheduledTeleport scheduledTeleport = teleporteeIdToScheduledTeleport.get(SenderUtil.getSenderId(event.getPlayer()));
 		if (scheduledTeleport == null) return;
 		
 		// ... unschedule it ...
 		scheduledTeleport.unschedule();
 		
 		// ... and inform the teleportee.
-		Mixin.msg(scheduledTeleport.getTeleportee(), "<rose>Cancelled <i>teleport to <h>"+scheduledTeleport.getDestinationDesc()+"<i>.");
+		Mixin.msg(scheduledTeleport.getTeleporteeId(), "<rose>Cancelled <i>teleport to <h>"+scheduledTeleport.getDestinationDesc()+"<i>.");
 	}
 
 	// -------------------------------------------- //
@@ -93,7 +93,7 @@ public class ScheduledTeleportEngine implements Listener, Runnable
 	public void run()
 	{
 		long now = System.currentTimeMillis();
-		for (ScheduledTeleport st : teleporteeToScheduledTeleport.values())
+		for (ScheduledTeleport st : teleporteeIdToScheduledTeleport.values())
 		{
 			if (st.isDue(now))
 			{

src/com/massivecraft/mcore/mixin/TeleportMixin.java

@@ -1,6 +1,5 @@
 package com.massivecraft.mcore.mixin;
 
-import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 import org.bukkit.permissions.Permissible;
 
@@ -8,12 +7,6 @@ import com.massivecraft.mcore.PS;
 
 public interface TeleportMixin
 {
-	// -------------------------------------------- //
-	// MESSAGING
-	// -------------------------------------------- //
-	
-	public void sendPreTeleportMessage(Player teleportee, String destinationDesc, int delaySeconds);
-	
 	// -------------------------------------------- //
 	// PLAYER
 	// -------------------------------------------- //
@@ -23,11 +16,6 @@ public interface TeleportMixin
 	public void teleport(Player teleportee, PS destinationPs, String destinationDesc) throws TeleporterException;
 	
 	public void teleport(Player teleportee, PS destinationPs, String destinationDesc, Permissible delayPermissible) throws TeleporterException;
-	public void teleport(Player teleportee, PS destinationPs, String destinationDesc, Permissible delayPermissible, CommandSender otherSender, String otherPerm) throws TeleporterException;
-	
-	public void teleport(Player teleportee, PS destinationPs, String destinationDesc, CommandSender otherSender, String otherPerm) throws TeleporterException;
-	
-	public void teleport(Player teleportee, PS destinationPs, String destinationDesc, int delaySeconds, CommandSender otherSender, String otherPerm) throws TeleporterException;
 	
 	public void teleport(Player teleportee, PS destinationPs, String destinationDesc, int delaySeconds) throws TeleporterException;
 	
@@ -40,11 +28,7 @@ public interface TeleportMixin
 	public void teleport(String teleporteeId, PS destinationPs, String destinationDesc) throws TeleporterException;
 	
 	public void teleport(String teleporteeId, PS destinationPs, String destinationDesc, Permissible delayPermissible) throws TeleporterException;
-	public void teleport(String teleporteeId, PS destinationPs, String destinationDesc, Permissible delayPermissible, CommandSender otherSender, String otherPerm) throws TeleporterException;
-	
-	public void teleport(String teleporteeId, PS destinationPs, String destinationDesc, CommandSender otherSender, String otherPerm) throws TeleporterException;
-	
-	public void teleport(String teleporteeId, PS destinationPs, String destinationDesc, int delaySeconds, CommandSender otherSender, String otherPerm) throws TeleporterException;
 	
+	// The only one not covered in abstract
 	public void teleport(String teleporteeId, PS destinationPs, String destinationDesc, int delaySeconds) throws TeleporterException;
 }

src/com/massivecraft/mcore/mixin/TeleportMixinAbstract.java

@@ -1,15 +1,11 @@
 package com.massivecraft.mcore.mixin;
 
-import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 import org.bukkit.permissions.Permissible;
 
 import com.massivecraft.mcore.Conf;
 import com.massivecraft.mcore.PS;
-import com.massivecraft.mcore.Permission;
-import com.massivecraft.mcore.util.PermUtil;
 import com.massivecraft.mcore.util.SenderUtil;
-import com.massivecraft.mcore.util.Txt;
 
 public abstract class TeleportMixinAbstract implements TeleportMixin
 {
@@ -17,29 +13,6 @@ public abstract class TeleportMixinAbstract implements TeleportMixin
 	// OVERRIDE
 	// -------------------------------------------- //
 	
-	@Override
-	public void sendPreTeleportMessage(Player teleportee, String destinationDesc, int delaySeconds)
-	{
-		if (delaySeconds > 0)
-		{
-			if (destinationDesc != null)
-			{
-				Mixin.msg(teleportee, "<i>Teleporting to <h>"+destinationDesc+" <i>in <h>"+delaySeconds+"s <i>unless you move.");
-			}
-			else
-			{
-				Mixin.msg(teleportee, "<i>Teleporting in <h>"+delaySeconds+"s <i>unless you move.");
-			}
-		}
-		else
-		{
-			if (destinationDesc != null)
-			{
-				Mixin.msg(teleportee, "<i>Teleporting to <h>"+destinationDesc+"<i>.");
-			}
-		}
-	}
-	
 	@Override
 	public void teleport(Player teleportee, PS destinationPs) throws TeleporterException
 	{
@@ -55,28 +28,14 @@ public abstract class TeleportMixinAbstract implements TeleportMixin
 	@Override
 	public void teleport(Player teleportee, PS destinationPs, String destinationDesc, Permissible delayPermissible) throws TeleporterException
 	{
-		int delaySeconds = decideDelaySeconds(delayPermissible);
+		int delaySeconds = getTpdelay(delayPermissible);
 		this.teleport(teleportee, destinationPs, destinationDesc, delaySeconds);
 	}
 	
 	@Override
-	public void teleport(Player teleportee, PS destinationPs, String destinationDesc, Permissible delayPermissible, CommandSender otherSender, String otherPerm) throws TeleporterException
+	public void teleport(Player teleportee, PS destinationPs, String destinationDesc, int delaySeconds) throws TeleporterException
 	{
-		int delaySeconds = decideDelaySeconds(delayPermissible);
+		this.teleport(SenderUtil.getSenderId(teleportee), destinationPs, destinationDesc, delaySeconds);
-		this.teleport(teleportee, destinationPs, destinationDesc, delaySeconds, otherSender, otherPerm);
-	}
-
-	@Override
-	public void teleport(Player teleportee, PS destinationPs, String destinationDesc, CommandSender otherSender, String otherPerm) throws TeleporterException
-	{
-		this.teleport(teleportee, destinationPs, destinationDesc, 0, otherSender, otherPerm);
-	}
-
-	@Override
-	public void teleport(Player teleportee, PS destinationPs, String destinationDesc, int delaySeconds, CommandSender otherSender, String otherPerm) throws TeleporterException
-	{
-		otherPermCheck(SenderUtil.getSenderId(teleportee), otherSender, otherPerm);
-		this.teleport(teleportee, destinationPs, destinationDesc, delaySeconds);
 	}
 	
 	// ----
@@ -96,27 +55,7 @@ public abstract class TeleportMixinAbstract implements TeleportMixin
 	@Override
 	public void teleport(String teleporteeId, PS destinationPs, String destinationDesc, Permissible delayPermissible) throws TeleporterException
 	{
-		int delaySeconds = decideDelaySeconds(delayPermissible);
+		int delaySeconds = getTpdelay(delayPermissible);
-		this.teleport(teleporteeId, destinationPs, destinationDesc, delaySeconds);
-	}
-
-	@Override
-	public void teleport(String teleporteeId, PS destinationPs, String destinationDesc, Permissible delayPermissible, CommandSender otherSender, String otherPerm) throws TeleporterException
-	{
-		int delaySeconds = decideDelaySeconds(delayPermissible);
-		this.teleport(teleporteeId, destinationPs, destinationDesc, delaySeconds, otherSender, otherPerm);
-	}
-
-	@Override
-	public void teleport(String teleporteeId, PS destinationPs, String destinationDesc, CommandSender otherSender, String otherPerm) throws TeleporterException
-	{
-		this.teleport(teleporteeId, destinationPs, destinationDesc, 0, otherSender, otherPerm);
-	}
-
-	@Override
-	public void teleport(String teleporteeId, PS destinationPs, String destinationDesc, int delaySeconds, CommandSender otherSender, String otherPerm) throws TeleporterException
-	{
-		otherPermCheck(teleporteeId, otherSender, otherPerm);
 		this.teleport(teleporteeId, destinationPs, destinationDesc, delaySeconds);
 	}
 	
@@ -124,17 +63,12 @@ public abstract class TeleportMixinAbstract implements TeleportMixin
 	// UTIL
 	// -------------------------------------------- //
 	
-	public static int decideDelaySeconds(Permissible delayPermissible)
+	public static int getTpdelay(Permissible delayPermissible)
 	{
-		int ret = Conf.tpdelay;
+		return Conf.getTpdelay(delayPermissible);
-		if (Permission.NOTPDELAY.has(delayPermissible, false))
-		{
-			ret = 0;
-		}
-		ret = Math.max(ret, 0);
-		return ret;
 	}
 	
+	/*
 	public static void otherPermCheck(String teleporteeId, CommandSender otherSender, String otherPerm) throws TeleporterException
 	{
 		String otherSenderId = SenderUtil.getSenderId(otherSender);
@@ -147,7 +81,7 @@ public abstract class TeleportMixinAbstract implements TeleportMixin
 	{
 		if (!SenderUtil.isPlayerId(teleporteeId)) throw new TeleporterException(Txt.parse("<white>%s <b>is not a player.", Mixin.getDisplayName(teleporteeId)));
 		if (Mixin.isOffline(teleporteeId)) throw new TeleporterException(Txt.parse("<white>%s <b>is offline.", Mixin.getDisplayName(teleporteeId)));
-	}
+	}*/
 	
 	
 	

src/com/massivecraft/mcore/mixin/TeleportMixinDefault.java

@@ -49,32 +49,50 @@ public class TeleportMixinDefault extends TeleportMixinAbstract
 	// -------------------------------------------- //
 	
 	@Override
-	public void teleport(Player teleportee, PS destinationPs, String destinationDesc, int delaySeconds) throws TeleporterException
+	public void teleport(String teleporteeId, PS destinationPs, String destinationDesc, int delaySeconds) throws TeleporterException
 	{
-		this.sendPreTeleportMessage(teleportee, destinationDesc, delaySeconds);
+		if (!SenderUtil.isPlayerId(teleporteeId)) throw new TeleporterException(Txt.parse("<white>%s <b>is not a player.", Mixin.getDisplayName(teleporteeId)));
+		
 		if (delaySeconds > 0)
 		{
-			new ScheduledTeleport(teleportee, destinationPs, destinationDesc, delaySeconds).schedule();
+			// With delay
+			if (destinationDesc != null)
+			{
+				Mixin.msg(teleporteeId, "<i>Teleporting to <h>"+destinationDesc+" <i>in <h>"+delaySeconds+"s <i>unless you move.");
 			}
 			else
 			{
+				Mixin.msg(teleporteeId, "<i>Teleporting in <h>"+delaySeconds+"s <i>unless you move.");
+			}
+			
+			new ScheduledTeleport(teleporteeId, destinationPs, destinationDesc, delaySeconds).schedule();
+		}
+		else
+		{
+			// Without delay AKA "now"/"at once"
+			
 			// Run event
-			MCorePlayerPSTeleportEvent event = new MCorePlayerPSTeleportEvent(teleportee, teleportee.getLocation(), destinationPs.clone());
+			MCorePlayerPSTeleportEvent event = new MCorePlayerPSTeleportEvent(teleporteeId, Mixin.getSenderPs(teleporteeId), destinationPs.clone());
 			event.run();
 			if (event.isCancelled()) return;
 			if (event.getTo() == null) return;
 			destinationPs = event.getTo().clone();
 			
+			if (destinationDesc != null)
+			{
+				Mixin.msg(teleporteeId, "<i>Teleporting to <h>"+destinationDesc+"<i>.");
+			}
+			
+			Player teleportee = SenderUtil.getPlayer(teleporteeId);
+			if (teleportee != null)
+			{
 				teleportEntity(teleportee, destinationPs);
 			}
-	}
+			else
-	
-	@Override
-	public void teleport(String teleporteeId, PS destinationPs, String destinationDesc, int delaySeconds) throws TeleporterException
 			{
-		validateTeleporteeId(teleporteeId);
+				Mixin.setSenderPs(teleporteeId, destinationPs.clone());
-		Player teleportee = SenderUtil.getPlayer(teleporteeId);
+			}
-		this.teleport(teleportee, destinationPs, destinationDesc, delaySeconds);
+		}
 	}
 	
 }

src/com/massivecraft/mcore/util/FirstTeleportUtil.java

@@ -0,0 +1,82 @@
+package com.massivecraft.mcore.util;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerLoginEvent;
+import org.bukkit.event.player.PlayerTeleportEvent;
+
+import com.massivecraft.mcore.MCore;
+
+/**
+ * The first teleport to ever occur for a player happens soon after the player logged in.
+ * This is a system one that should not be cancelled since it happens as the player is assigned their entrance position.
+ * Altering the to-location is possible but altering the world will not matter. Only x, y, z, pitch and yaw are taken into consideration.
+ * This tool can be used to check if a PlayerTeleportEvent is the first one for the player.
+ */
+public class FirstTeleportUtil implements Listener
+{
+	// -------------------------------------------- //
+	// INSTANCE & CONSTRUCT
+	// -------------------------------------------- //
+	
+	private static FirstTeleportUtil i = new FirstTeleportUtil();
+	public static FirstTeleportUtil get() { return i; }
+	
+	// -------------------------------------------- //
+	// STATIC
+	// -------------------------------------------- //
+	
+	private Map<Player, PlayerTeleportEvent> playerToFirstTeleport;
+	
+	public static boolean isFirstTeleport(PlayerTeleportEvent event)
+	{
+		Player player = event.getPlayer();
+		
+		PlayerTeleportEvent stored = i.playerToFirstTeleport.get(player);
+		if (stored == null)
+		{
+			i.playerToFirstTeleport.put(player, event);
+			return true;
+		}
+		else
+		{
+			return stored == event;
+		}
+	}
+	
+	// -------------------------------------------- //
+	// SETUP
+	// -------------------------------------------- //
+	
+	public void setup()
+	{
+		playerToFirstTeleport = new HashMap<Player, PlayerTeleportEvent>();
+		Bukkit.getPluginManager().registerEvents(this, MCore.get());
+	}
+	
+	// -------------------------------------------- //
+	// LISTENER
+	// -------------------------------------------- //
+	
+	@EventHandler(priority = EventPriority.MONITOR)
+	public void onPlayerLoginEventMonitor(PlayerLoginEvent event)
+	{
+		Player player = event.getPlayer();
+		this.playerToFirstTeleport.remove(player);
+	}
+	
+	@EventHandler(priority = EventPriority.LOWEST)
+	public void onPlayerTeleportLowest(PlayerTeleportEvent event)
+	{
+		Player player = event.getPlayer();
+		if (this.playerToFirstTeleport.containsKey(player)) return;
+		this.playerToFirstTeleport.put(player, event);
+	}
+	
+}