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Fix NPE from sign placement (Closes #1963) (Fixes #1917)

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This fixes issues with upstreams changes to solve a private issue on
their side, as signs are placed, they may replace existing blocks, e.g.
grass, which breaks upstreams assumption that the sign is always placed
adjacent to a surface
This commit is contained in:
Shane Freeder 2019-04-17 00:53:55 +01:00
parent 9c79f489ed
commit 90d8377b59
1 changed files with 55 additions and 0 deletions
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Spigot-Server-Patches/0439-Fix-NPE-from-sign-placement.patch Normal file
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@ -0,0 +1,55 @@
From 89feaae0a193a0443bfe41f2306ac1819e93f7b2 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Wed, 17 Apr 2019 00:48:59 +0100
Subject: [PATCH] Fix NPE from sign placement
This fixes issues with upstreams changes to solve a private issue on
their side, as signs are placed, they may replace existing blocks, e.g.
grass, which breaks upstreams assumption that the sign is always placed
adjacent to a surface
diff --git a/src/main/java/net/minecraft/server/EntityHuman.java b/src/main/java/net/minecraft/server/EntityHuman.java
index f5d9b4abc2..fdbe9a2adc 100644
--- a/src/main/java/net/minecraft/server/EntityHuman.java
+++ b/src/main/java/net/minecraft/server/EntityHuman.java
@@ -70,6 +70,7 @@ public abstract class EntityHuman extends EntityLiving {
public EntityFishingHook hookedFish;
// Paper start
public boolean affectsSpawning = true;
+ public BlockPosition openingSign = null; // Paper - fix NPE when opening signs
// Paper end
// Paper start - Player view distance API
private int viewDistance = -1;
diff --git a/src/main/java/net/minecraft/server/ItemSign.java b/src/main/java/net/minecraft/server/ItemSign.java
index 11045ee1e1..7808aed0c0 100644
--- a/src/main/java/net/minecraft/server/ItemSign.java
+++ b/src/main/java/net/minecraft/server/ItemSign.java
@@ -16,6 +16,7 @@ public class ItemSign extends ItemBlockWallable {
if (!world.isClientSide && !flag && entityhuman != null) {
// CraftBukkit start - SPIGOT-4678
// entityhuman.openSign((TileEntitySign) world.getTileEntity(blockposition));
+ entityhuman.openingSign = blockposition; // Paper - fix NPE when opening signs
ItemSign.openSign = true;
// CraftBukkit end
}
diff --git a/src/main/java/net/minecraft/server/ItemStack.java b/src/main/java/net/minecraft/server/ItemStack.java
index eb130c0121..993de2bded 100644
--- a/src/main/java/net/minecraft/server/ItemStack.java
+++ b/src/main/java/net/minecraft/server/ItemStack.java
@@ -305,7 +305,12 @@ public final class ItemStack {
// SPIGOT-4678
if (this.item instanceof ItemSign && ItemSign.openSign) {
ItemSign.openSign = false;
- entityhuman.openSign((TileEntitySign) world.getTileEntity(new BlockActionContext(itemactioncontext).getClickPosition()));
+ // Paper start - fix NPE when opening signs
+ if (entityhuman.openingSign != null) {
+ entityhuman.openSign((TileEntitySign) world.getTileEntity(entityhuman.openingSign));
+ entityhuman.openingSign = null;
+ }
+ // Paper end
}
// SPIGOT-1288 - play sound stripped from ItemBlock
--
2.21.0