From 62d976242c21dbe83df7ab804be478efd38dd144 Mon Sep 17 00:00:00 2001
From: Doc <nachito94@msn.com>
Date: Mon, 21 Feb 2022 11:59:30 +1100
Subject: [PATCH] SPIGOT-6900, SPIGOT-6330: Make /difficulty command per-world

---
 .../server/commands/CommandDifficulty.patch     | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 nms-patches/net/minecraft/server/commands/CommandDifficulty.patch

diff --git a/nms-patches/net/minecraft/server/commands/CommandDifficulty.patch b/nms-patches/net/minecraft/server/commands/CommandDifficulty.patch
new file mode 100644
index 000000000..08e5511ca
--- /dev/null
+++ b/nms-patches/net/minecraft/server/commands/CommandDifficulty.patch
@@ -0,0 +1,17 @@
+--- a/net/minecraft/server/commands/CommandDifficulty.java
++++ b/net/minecraft/server/commands/CommandDifficulty.java
+@@ -42,11 +42,12 @@
+ 
+     public static int setDifficulty(CommandListenerWrapper commandlistenerwrapper, EnumDifficulty enumdifficulty) throws CommandSyntaxException {
+         MinecraftServer minecraftserver = commandlistenerwrapper.getServer();
++        net.minecraft.server.level.WorldServer worldServer = commandlistenerwrapper.getLevel(); // CraftBukkit
+ 
+-        if (minecraftserver.getWorldData().getDifficulty() == enumdifficulty) {
++        if (worldServer.getDifficulty() == enumdifficulty) { // CraftBukkit
+             throw CommandDifficulty.ERROR_ALREADY_DIFFICULT.create(enumdifficulty.getKey());
+         } else {
+-            minecraftserver.setDifficulty(enumdifficulty, true);
++            worldServer.serverLevelData.setDifficulty(enumdifficulty); // CraftBukkit
+             commandlistenerwrapper.sendSuccess(new ChatMessage("commands.difficulty.success", new Object[]{enumdifficulty.getDisplayName()}), true);
+             return 0;
+         }