Fix IllegalStateException in sign click patch

Cleanup

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

@@ -12,7 +12,6 @@ import java.util.List;
 import java.util.Locale;
 import java.util.logging.Level;
 import java.util.logging.Logger;
-import net.minecraft.server.InventoryEnderChest;
 import org.bukkit.Location;
 import org.bukkit.Material;
 import org.bukkit.entity.HumanEntity;
@@ -26,7 +25,6 @@ import org.bukkit.event.inventory.InventoryType;
 import org.bukkit.event.player.PlayerLoginEvent.Result;
 import org.bukkit.event.player.*;
 import org.bukkit.event.player.PlayerTeleportEvent.TeleportCause;
-import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.InventoryHolder;
 import org.bukkit.inventory.ItemStack;
 
@@ -91,7 +89,8 @@ public class EssentialsPlayerListener implements Listener
 			final Location from = event.getFrom();
 			final Location origTo = event.getTo();
 			final Location to = origTo.clone();
-			if (ess.getSettings().cancelAfkOnMove() && origTo.getY() >= from.getBlockY() + 1) {
+			if (ess.getSettings().cancelAfkOnMove() && origTo.getY() >= from.getBlockY() + 1)
+			{
 				user.updateActivity(true);
 				return;
 			}
@@ -127,7 +126,8 @@ public class EssentialsPlayerListener implements Listener
 		{
 			user.toggleVanished();
 		}
-		if (!user.isJailed()) {
+		if (!user.isJailed())
+		{
 			user.setLastLocation();
 		}
 		user.updateActivity(false);
@@ -342,7 +342,7 @@ public class EssentialsPlayerListener implements Listener
 			user.updateActivity(true);
 		}
 	}
-	
+
 	@EventHandler(priority = EventPriority.LOWEST)
 	public void onPlayerChangedWorldHack(final PlayerChangedWorldEvent event)
 	{
@@ -384,6 +384,15 @@ public class EssentialsPlayerListener implements Listener
 			}
 			break;
 		case LEFT_CLICK_AIR:
+			if (event.getPlayer().isFlying())			
+			{
+				final User user = ess.getUser(event.getPlayer());
+				if (user.isFlyClickJump())
+				{
+					useFlyClickJump(user);
+					return;
+				}
+			}
 		case LEFT_CLICK_BLOCK:
 			if (event.getItem() != null && event.getItem().getTypeId() != AIR)
 			{
@@ -399,6 +408,37 @@ public class EssentialsPlayerListener implements Listener
 		}
 	}
 
+	private void useFlyClickJump(final User user)
+	{
+		try
+		{
+			final Location otarget = Util.getTarget(user);
+
+			ess.scheduleSyncDelayedTask(
+					new Runnable()
+					{
+						@Override
+						public void run()
+						{
+							Location loc = user.getLocation();
+							loc.setX(otarget.getX());
+							loc.setZ(otarget.getZ());
+							while (Util.isBlockDamaging(loc.getWorld(), loc.getBlockX(), loc.getBlockY() -1, loc.getBlockZ())) {
+								loc.setY(loc.getY() + 1d);
+							}
+							user.getBase().teleport(loc, TeleportCause.PLUGIN);
+						}
+					});
+		}
+		catch (Exception ex)
+		{
+			if (ess.getSettings().isDebug())
+			{
+				LOGGER.log(Level.WARNING, ex.getMessage(), ex);
+			}
+		}
+	}
+
 	private boolean usePowertools(final User user, final int id)
 	{
 		final List<String> commandList = user.getPowertool(id);

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

@@ -26,6 +26,7 @@ public class User extends UserData implements Comparable<User>, IReplyTo, IUser
 	private transient long lastThrottledAction;
 	private transient long lastActivity = System.currentTimeMillis();
 	private boolean hidden = false;
+	private boolean rightClickJump = false;
 	private transient Location afkPosition = null;
 	private boolean invSee = false;
 	private boolean enderSee = false;
@@ -717,4 +718,14 @@ public class User extends UserData implements Comparable<User>, IReplyTo, IUser
 	{
 		lastThrottledAction = System.currentTimeMillis();;
 	}
+
+	public boolean isFlyClickJump()
+	{
+		return rightClickJump;
+	}
+
+	public void setRightClickJump(boolean rightClickJump)
+	{
+		this.rightClickJump = rightClickJump;
+	}	
 }

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

@@ -288,6 +288,7 @@ public class Util
 	public final static int RADIUS = 3;
 	public final static Vector3D[] VOLUME;
 
+
 	public static class Vector3D
 	{
 		public Vector3D(int x, int y, int z)
@@ -397,6 +398,15 @@ public class Util
 	}
 
 	public static boolean isBlockUnsafe(final World world, final int x, final int y, final int z)
+	{
+		if (isBlockDamaging(world, x, y, z))
+		{
+			return true;
+		}
+		return isBlockAboveAir(world, x, y, z);
+	}
+
+	public static boolean isBlockDamaging(final World world, final int x, final int y, final int z)
 	{
 		final Block below = world.getBlockAt(x, y - 1, z);
 		if (below.getType() == Material.LAVA || below.getType() == Material.STATIONARY_LAVA)
@@ -419,7 +429,7 @@ public class Util
 		{
 			return true;
 		}
-		return isBlockAboveAir(world, x, y, z);
+		return false;
 	}
 
 	public static ItemStack convertBlockToItem(final Block block)

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

@@ -19,6 +19,21 @@ public class Commandjump extends EssentialsCommand
 	@Override
 	public void run(final Server server, final User user, final String commandLabel, final String[] args) throws Exception
 	{
+		if (args.length > 0 && args[0].contains("lock") && user.isAuthorized("essentials.jump.lock"))
+		{
+			if (user.isFlyClickJump())
+			{
+				user.setRightClickJump(false);
+				user.sendMessage("Flying wizard mode disabled");
+			}
+			else
+			{
+				user.setRightClickJump(true);
+				user.sendMessage("Enabling flying wizard mode");
+			}
+			return;
+		}
+
 		Location loc;
 		final Location cloc = user.getLocation();
 

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

@@ -1,6 +1,7 @@
 package com.earth2me.essentials.signs;
 
 import com.earth2me.essentials.IEssentials;
+import java.util.logging.Level;
 import org.bukkit.Material;
 import org.bukkit.block.Block;
 import org.bukkit.block.Sign;
@@ -28,9 +29,24 @@ public class SignPlayerListener implements Listener
 			return;
 		}
 		final Block block;
-		if (event.isCancelled() && event.getAction() == Action.RIGHT_CLICK_AIR) {
+		if (event.isCancelled() && event.getAction() == Action.RIGHT_CLICK_AIR)
-			block = event.getPlayer().getTargetBlock(null, 5);
+		{
-		} else {
+			Block targetBlock = null;
+			try
+			{
+				targetBlock = event.getPlayer().getTargetBlock(null, 5);
+			}
+			catch (IllegalStateException ex)
+			{
+				if (ess.getSettings().isDebug())
+				{
+					ess.getLogger().log(Level.WARNING, ex.getMessage(), ex);
+				}
+			}
+			block = targetBlock;
+		}
+		else
+		{
 			block = event.getClickedBlock();
 		}
 		if (block == null)