Delaying the undoing of the invulnerability

Previously plugin would instantaneously undo the invulnerability status after teleporting, rendering it pretty useless. Now, we wait 30 ticks before unsetting it (to ensure the entity does not take unintended damage during the teleport).

src/main/java/com/coollord22/otheranimalteleport/OATMethods.java

@@ -38,7 +38,7 @@ public void run() {
 				if(plugin.toUseTickets) 
 					fromChunk.removePluginChunkTicket(plugin);
 
-				ent.setInvulnerable(invulnerable);
+				undoInvulnerable(ent, invulnerable, plugin);
 			}
 		}.runTaskLater(plugin, 2);
 	}
@@ -60,11 +60,21 @@ public void run() {
 				plugin.log.logInfo("[Ent-" + ent.getEntityId() + "] Teleporting entity" + ent.getType(), Verbosity.HIGH);
 				ent.teleport(to);
 
-				if(plugin.toUseTickets) 
+				if(plugin.toUseTickets)
 					fromChunk.removePluginChunkTicket(plugin);
 
-				ent.setInvulnerable(invulnerable);
+				undoInvulnerable(ent, invulnerable, plugin);
 			}
 		}.runTaskLater(plugin, 2);
 	}
+
+	private static void undoInvulnerable(Entity ent, boolean invulnerable, OtherAnimalTeleport plugin) {
+		new BukkitRunnable() {
+			@Override
+			public void run() {
+				plugin.log.logInfo("[Ent-" + ent.getEntityId() + "] Reverting invulnerability status.", Verbosity.HIGHEST);
+				ent.setInvulnerable(invulnerable);
+			}
+		}.runTaskLater(plugin, 30L);
+	}
 }