Minor fix for player tab list

src/main/java/net/citizensnpcs/EventListen.java

@@ -25,7 +25,6 @@ import net.citizensnpcs.api.npc.NPCRegistry;
 import net.citizensnpcs.api.trait.trait.Owner;
 import net.citizensnpcs.api.util.Messaging;
 import net.citizensnpcs.editor.Editor;
-import net.citizensnpcs.npc.ai.NPCHolder;
 import net.citizensnpcs.trait.Controllable;
 import net.citizensnpcs.trait.CurrentLocation;
 import net.citizensnpcs.util.Messages;
@@ -129,7 +128,7 @@ public class EventListen implements Listener {
             toRespawn.put(coord, npc);
             if (Messaging.isDebugging()) {
                 Messaging
-                        .debug("Despawned id", npc.getId(), "due to chunk unload at [" + coord.x + "," + coord.z + "]");
+                .debug("Despawned id", npc.getId(), "due to chunk unload at [" + coord.x + "," + coord.z + "]");
             }
         }
     }
@@ -249,7 +248,7 @@ public class EventListen implements Listener {
 
     @EventHandler(ignoreCancelled = true)
     public void onPlayerChangedWorld(PlayerChangedWorldEvent event) {
-        if (!(event.getPlayer() instanceof NPCHolder))
+        if (npcRegistry.getNPC(event.getPlayer()) == null)
             return;
         NMS.removeFromServerPlayerList(event.getPlayer());
         // on teleport, player NPCs are added to the server player list. this is

src/main/java/net/citizensnpcs/npc/ai/BlockBreaker.java

@@ -89,9 +89,9 @@ public class BlockBreaker extends BehaviorGoalAdapter {
             startDigTick = currentTick;
             if (entity instanceof NPCHolder) {
                 NPC npc = ((NPCHolder) entity).getNPC();
-                if (!npc.getNavigator().isNavigating()) {
+                if (npc != null && !npc.getNavigator().isNavigating()) {
                     npc.getNavigator()
-                    .setTarget(entity.world.getWorld().getBlockAt(x, y, z).getLocation().add(0, 1, 0));
+                            .setTarget(entity.world.getWorld().getBlockAt(x, y, z).getLocation().add(0, 1, 0));
                 }
             }
             return BehaviorStatus.RUNNING;
@@ -108,7 +108,7 @@ public class BlockBreaker extends BehaviorGoalAdapter {
             float damage = getStrength(block) * (tickDifference + 1) * configuration.blockStrengthModifier();
             if (damage >= 1F) {
                 entity.world.getWorld().getBlockAt(x, y, z)
-                .breakNaturally(CraftItemStack.asCraftMirror(getCurrentItem()));
+                        .breakNaturally(CraftItemStack.asCraftMirror(getCurrentItem()));
                 return BehaviorStatus.SUCCESS;
             }
             int modifiedDamage = (int) (damage * 10.0F);

src/main/java/net/citizensnpcs/npc/ai/CitizensNavigator.java

@@ -230,7 +230,7 @@ public class CitizensNavigator implements Navigator, Runnable {
             NavigationStuckEvent event = new NavigationStuckEvent(this, action);
             Bukkit.getPluginManager().callEvent(event);
             action = event.getAction();
-            boolean shouldContinue = action != null ? action.run(npc, this): false;
+            boolean shouldContinue = action != null ? action.run(npc, this) : false;
             if (shouldContinue) {
                 stationaryTicks = 0;
                 executing.clearCancelReason();

src/main/java/net/citizensnpcs/npc/entity/EntityHumanNPC.java

@@ -42,6 +42,7 @@ import org.bukkit.Bukkit;
 import org.bukkit.Location;
 import org.bukkit.craftbukkit.v1_7_R4.CraftServer;
 import org.bukkit.craftbukkit.v1_7_R4.entity.CraftPlayer;
+import org.bukkit.entity.Player;
 import org.bukkit.metadata.MetadataValue;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.util.Vector;
@@ -293,7 +294,16 @@ public class EntityHumanNPC extends EntityPlayer implements NPCHolder {
             if (useListName != this.useListName || this.useListName == -1) {
                 this.useListName = useListName;
             }
-            NMS.sendToOnline(getListPacket(removeFromPlayerList));
+            boolean sendListPacket = true;
+            for (Player player : Bukkit.getOnlinePlayers()) {
+                if (player.getName().equalsIgnoreCase(getName())) {
+                    sendListPacket = false;
+                    break;
+                }
+            }
+            if (sendListPacket) {
+                NMS.sendToOnline(getListPacket(removeFromPlayerList));
+            }
             NMS.sendPacketsNearby(getBukkitEntity(), current, packets);
         }
     }

src/main/java/net/citizensnpcs/util/NMS.java

@@ -176,7 +176,7 @@ public class NMS {
 
     @SuppressWarnings("deprecation")
     private static Constructor<?> getCustomEntityConstructor(Class<?> clazz, EntityType type) throws SecurityException,
-            NoSuchMethodException {
+    NoSuchMethodException {
         Constructor<?> constructor = ENTITY_CONSTRUCTOR_CACHE.get(clazz);
         if (constructor == null) {
             constructor = clazz.getConstructor(World.class);
@@ -295,6 +295,8 @@ public class NMS {
     @SuppressWarnings("deprecation")
     public static void minecartItemLogic(EntityMinecartAbstract minecart) {
         NPC npc = ((NPCHolder) minecart).getNPC();
+        if (npc == null)
+            return;
         Material mat = Material.getMaterial(npc.data().get(NPC.MINECART_ITEM_METADATA, ""));
         int data = npc.data().get(NPC.MINECART_ITEM_DATA_METADATA, 0);
         int offset = npc.data().get(NPC.MINECART_OFFSET_METADATA, 0);