PaperMC/patches/server/0541-fix-PlayerItemHeldEvent-firing-twice.patch
Owen 89d51d5f29
Allow enabling sand duping (#10191)
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable.

It should be noted that this decision does not promise all future exploits will be configurable.
2024-03-03 17:05:34 -05:00

18 lines
1.4 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: chickeneer <emcchickeneer@gmail.com>
Date: Thu, 22 Apr 2021 19:02:07 -0700
Subject: [PATCH] fix PlayerItemHeldEvent firing twice
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 0ff1e65df2b3c131ed65f8b769bbf369a76aa3d0..12b81d6dc04586d2491a382b6198f986b2b5bae1 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -1921,6 +1921,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
PacketUtils.ensureRunningOnSameThread(packet, this, this.player.serverLevel());
if (this.player.isImmobile()) return; // CraftBukkit
if (packet.getSlot() >= 0 && packet.getSlot() < Inventory.getSelectionSize()) {
+ if (packet.getSlot() == this.player.getInventory().selected) { return; } // Paper - don't fire itemheldevent when there wasn't a slot change
PlayerItemHeldEvent event = new PlayerItemHeldEvent(this.getCraftPlayer(), this.player.getInventory().selected, packet.getSlot());
this.cserver.getPluginManager().callEvent(event);
if (event.isCancelled()) {