PaperMC/Spigot-Server-Patches/0384-Fix-AssertionError-when-player-hand-set-to-empty-typ.patch
Shane Freeder 7ef05fbd8a Do not perform neighbour updates when using debug stick (Fixes #2134)
CB blindly drops any update flags when recording block modifications,
this causes the debug stick to blindly update neighbouring blocks on usage
in order to control this, we will special case this item, however, this
ideally should be fixed by recording the actual update flags used,
but will induce ABI breaks...

This patch also maintains the behavior of the BlockPlaceEvent, this
behavior will NOT be guaranteed in the future, however.
2020-12-22 22:45:10 +00:00

35 lines
2 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Lukasz Derlatka <toranktto@gmail.com>
Date: Mon, 11 Nov 2019 16:08:13 +0100
Subject: [PATCH] Fix AssertionError when player hand set to empty type
Fixes an AssertionError when setting the player's item in hand to null or a new ItemStack of Air in PlayerInteractEvent
Fixes GH-2718
diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
index dbd212fc2f0c95ab1dcc4b6be86f0f87ac726fa7..37e3efa1fed858f735166a5c0cb97f886b2bbb4e 100644
--- a/src/main/java/net/minecraft/server/EntityLiving.java
+++ b/src/main/java/net/minecraft/server/EntityLiving.java
@@ -2055,6 +2055,7 @@ public abstract class EntityLiving extends Entity {
return predicate.test(this.getItemInMainHand().getItem()) || predicate.test(this.getItemInOffHand().getItem());
}
+ public final ItemStack getItemInHand(EnumHand enumhand) { return this.b(enumhand); } // Paper - OBFHELPER
public ItemStack b(EnumHand enumhand) {
if (enumhand == EnumHand.MAIN_HAND) {
return this.getEquipment(EnumItemSlot.MAINHAND);
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index 4dd57152cb0d09b2df08be68ab111623724d52fc..a6b83cb349386ff1fb6f3267f0d610bf31df3f16 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -1557,6 +1557,10 @@ public class PlayerConnection implements PacketListenerPlayIn {
this.player.getBukkitEntity().updateInventory(); // SPIGOT-2524
return;
}
+ // Paper start
+ itemstack = this.player.getItemInHand(enumhand);
+ if (itemstack.isEmpty()) return;
+ // Paper end
EnumInteractionResult enuminteractionresult = this.player.playerInteractManager.a(this.player, worldserver, itemstack, enumhand);
if (enuminteractionresult.b()) {