Check teleportation on command location prefix

Bukkit/src/main/java/com/plotsquared/bukkit/object/BukkitPlayer.java

@@ -12,9 +12,12 @@ import org.bukkit.Effect;
 import org.bukkit.GameMode;
 import org.bukkit.WeatherType;
 import org.bukkit.entity.Player;
+import org.bukkit.event.EventException;
+import org.bukkit.event.player.PlayerTeleportEvent;
 import org.bukkit.event.player.PlayerTeleportEvent.TeleportCause;
 
 import java.util.UUID;
+import org.bukkit.plugin.RegisteredListener;
 
 public class BukkitPlayer extends PlotPlayer {
     
@@ -57,6 +60,39 @@ public class BukkitPlayer extends PlotPlayer {
         return this.player.getLastPlayed();
     }
 
+    @Override
+    public boolean canTeleport(Location loc) {
+        org.bukkit.Location to = BukkitUtil.getLocation(loc);
+        org.bukkit.Location from = player.getLocation();
+        PlayerTeleportEvent event = new PlayerTeleportEvent(player, from, to);
+        RegisteredListener[] listeners = event.getHandlers().getRegisteredListeners();
+        for (RegisteredListener listener : listeners) {
+            if (listener.getPlugin().getName().equals("PlotSquared")) {
+                continue;
+            }
+            try {
+                listener.callEvent(event);
+            } catch (EventException e) {
+                e.printStackTrace();
+            }
+        }
+        if (event.isCancelled() || !event.getTo().equals(to)) {
+            return false;
+        }
+        event = new PlayerTeleportEvent(player, to, from);
+        for (RegisteredListener listener : listeners) {
+            if (listener.getPlugin().getName().equals("PlotSquared")) {
+                continue;
+            }
+            try {
+                listener.callEvent(event);
+            } catch (EventException e) {
+                e.printStackTrace();
+            }
+        }
+        return true;
+    }
+
     @Override
     public boolean hasPermission(String permission) {
         if (this.offline && EconHandler.manager != null) {

Core/src/main/java/com/intellectualcrafters/plot/commands/MainCommand.java

@@ -206,13 +206,18 @@ public class MainCommand extends Command {
             PlotArea area = player.getApplicablePlotArea();
             Plot newPlot = Plot.fromString(area, args[0]);
             if (newPlot != null && (player instanceof ConsolePlayer || newPlot.getArea().equals(area) || Permissions.hasPermission(player, C.PERMISSION_ADMIN)) && !newPlot.isDenied(player.getUUID())) {
+                Location newLoc = newPlot.getCenter();
+                if (player.canTeleport(newLoc)) {
                     // Save meta
                     loc = player.getMeta("location");
                     plot = player.getMeta("lastplot");
                     tp = true;
                     // Set loc
-                player.setMeta("location", newPlot.getBottomAbs());
+                    player.setMeta("location", newLoc);
                     player.setMeta("lastplot", newPlot);
+                } else {
+                    C.BORDER.send(player);
+                }
                 // Trim command
                 args = Arrays.copyOfRange(args, 1, args.length);
             }

Core/src/main/java/com/intellectualcrafters/plot/object/PlotPlayer.java

@@ -250,6 +250,17 @@ public abstract class PlotPlayer implements CommandCaller, OfflinePlotPlayer {
      */
     public abstract UUID getUUID();
 
+    public boolean canTeleport(Location loc) {
+        Location current = getLocationFull();
+        teleport(loc);
+        boolean result = true;
+        if (!getLocation().equals(loc)) {
+            result = false;
+        }
+        teleport(current);
+        return result;
+    }
+
     /**
      * Teleport the player to a location.
      * @param location the target location