From 9d42a05759228dab197e311242e79750055dd071 Mon Sep 17 00:00:00 2001
From: A248 <anandebeh@gmail.com>
Date: Thu, 16 Apr 2020 18:31:23 -0400
Subject: [PATCH] Fix NPE for invalid world argument in gamerule cmd

Stumbled upon an NPE when using /mv gamerule. I realised it was because I had specified a nonexistent world. This will fix it.
---
 .../MultiverseCore/commands/GameruleCommand.java             | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/main/java/com/onarandombox/MultiverseCore/commands/GameruleCommand.java b/src/main/java/com/onarandombox/MultiverseCore/commands/GameruleCommand.java
index 5cc91d9f..01eddae6 100644
--- a/src/main/java/com/onarandombox/MultiverseCore/commands/GameruleCommand.java
+++ b/src/main/java/com/onarandombox/MultiverseCore/commands/GameruleCommand.java
@@ -62,6 +62,11 @@ public class GameruleCommand extends MultiverseCommand {
             world = p.getWorld();
         } else {
             world = Bukkit.getWorld(args.get(2));
+            if (world == null) {
+                sender.sendMessage(ChatColor.RED + "Failure!" + ChatColor.WHITE + " World " + ChatColor.AQUA + args.get(2)
+                    + ChatColor.WHITE + " does not exist.");
+                return;
+            }
         }
 
         if (world.setGameRuleValue(gameRule, value)) {