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Paper/patches/server-unmapped/0712-fix-PlayerItemHeldEvent-firing-twice.patch
2021-06-11 14:02:28 +02:00

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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/network/protocol/game/PacketPlayInHeldItemSlot.java b/src/main/java/net/minecraft/network/protocol/game/PacketPlayInHeldItemSlot.java
index d68f3e6b35f0af846c8a66710c5752508c095179..0e8ee44d0104ca7c666f57bdb54e0957935d5b34 100644
--- a/src/main/java/net/minecraft/network/protocol/game/PacketPlayInHeldItemSlot.java
+++ b/src/main/java/net/minecraft/network/protocol/game/PacketPlayInHeldItemSlot.java
@@ -24,6 +24,7 @@ public class PacketPlayInHeldItemSlot implements Packet<PacketListenerPlayIn> {
packetlistenerplayin.a(this);
}
+ public int getItemInHandIndex() { return b(); } // Paper - OBFHELPER
public int b() {
return this.itemInHandIndex;
}
diff --git a/src/main/java/net/minecraft/server/network/PlayerConnection.java b/src/main/java/net/minecraft/server/network/PlayerConnection.java
index a0d48ef2b27267da0864baa9059c7c3e5aef6f48..957d3b56aea116f947ca8fb74127f652de72b701 100644
--- a/src/main/java/net/minecraft/server/network/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/network/PlayerConnection.java
@@ -1909,6 +1909,7 @@ public class PlayerConnection implements PacketListenerPlayIn {
PlayerConnectionUtils.ensureMainThread(packetplayinhelditemslot, this, this.player.getWorldServer());
if (this.player.isFrozen()) return; // CraftBukkit
if (packetplayinhelditemslot.b() >= 0 && packetplayinhelditemslot.b() < PlayerInventory.getHotbarSize()) {
+ if (packetplayinhelditemslot.getItemInHandIndex() == this.player.inventory.itemInHandIndex) { return; } // Paper - don't fire itemheldevent when there wasn't a slot change
PlayerItemHeldEvent event = new PlayerItemHeldEvent(this.getPlayer(), this.player.inventory.itemInHandIndex, packetplayinhelditemslot.b());
this.server.getPluginManager().callEvent(event);
if (event.isCancelled()) {