Adds pvp protection after teleport

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

@@ -32,6 +32,9 @@ public class EssentialsEntityListener implements Listener
 		{
 			final User defender = ess.getUser(eDefend);
 			final User attacker = ess.getUser(eAttack);
+			if (attacker.hasInvulnerabilityAfterTeleport() || defender.hasInvulnerabilityAfterTeleport()) {
+				event.setCancelled(true);
+			}
 			attacker.updateActivity(true);
 			final List<String> commandList = attacker.getPowertool(attacker.getItemInHand());
 			if (commandList != null && !commandList.isEmpty())

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

@@ -229,14 +229,13 @@ public class EssentialsPlayerListener implements Listener
 	@EventHandler(priority = EventPriority.HIGH, ignoreCancelled = true)
 	public void onPlayerTeleport(final PlayerTeleportEvent event)
 	{
-
+		final User user = ess.getUser(event.getPlayer());
 		//There is TeleportCause.COMMMAND but plugins have to actively pass the cause in on their teleports.
 		if ((event.getCause() == TeleportCause.PLUGIN || event.getCause() == TeleportCause.COMMAND) && ess.getSettings().registerBackInListener())
 		{
-			final User user = ess.getUser(event.getPlayer());
 			user.setLastLocation();
 		}
-
+		user.enableInvulnerabilityAfterTeleport();
 	}
 
 	@EventHandler(priority = EventPriority.HIGH, ignoreCancelled = true)

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

@@ -48,6 +48,7 @@ public class EssentialsTimer implements Runnable
 			}
 			user.checkMuteTimeout(currentTime);
 			user.checkJailTimeout(currentTime);
+			user.resetInvulnerabilityAfterTeleport();
 		}
 	}
 }

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

@@ -169,4 +169,6 @@ public interface ISettings extends IConf
 	boolean isMetricsEnabled();
 	
 	void setMetricsEnabled(boolean metricsEnabled);
+
+	public long getTeleportInvulnerability();
 }

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

@@ -609,7 +609,7 @@ public class Settings implements ISettings
 	{
 		return config.getBoolean("change-displayname", true);
 	}
-	
+
 	@Override
 	public boolean changePlayerListName()
 	{
@@ -745,4 +745,10 @@ public class Settings implements ISettings
 	{
 		this.metricsEnabled = metricsEnabled;
 	}
+
+	@Override
+	public long getTeleportInvulnerability()
+	{
+		return config.getLong("teleport-invulnerability", 0) * 1000;
+	}
 }

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

@@ -603,8 +603,32 @@ public class User extends UserData implements Comparable<User>, IReplyTo, IUser
 		return invSee;
 	}
 
-	public void setInvSee(boolean set)
+	public void setInvSee(final boolean set)
 	{
 		invSee = set;
 	}
+	private transient long teleportInvulnerabilityTimestamp = 0;
+
+	public void enableInvulnerabilityAfterTeleport()
+	{
+		final long time = ess.getSettings().getTeleportInvulnerability();
+		if (time > 0)
+		{
+			teleportInvulnerabilityTimestamp = System.currentTimeMillis() + time;
+		}
+	}
+
+	public void resetInvulnerabilityAfterTeleport()
+	{
+		if (teleportInvulnerabilityTimestamp != 0
+			&& teleportInvulnerabilityTimestamp < System.currentTimeMillis())
+		{
+			teleportInvulnerabilityTimestamp = 0;
+		}
+	}
+	
+	public boolean hasInvulnerabilityAfterTeleport()
+	{
+		return teleportInvulnerabilityTimestamp != 0 && teleportInvulnerabilityTimestamp >= System.currentTimeMillis();
+	}
 }

Essentials/src/config.yml

@@ -50,6 +50,10 @@ teleport-cooldown: 0
 # The delay, in seconds, before a user actually teleports.  If the user moves or gets attacked in this timeframe, the teleport never occurs.
 teleport-delay: 0
 
+# The delay, in seconds, a player can't be attacked by other players after he has been teleported by a command
+# This will also prevent that the player can attack other players
+teleport-invulnerability: 0
+
 # The delay, in seconds, required between /heal attempts
 heal-cooldown: 60