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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Tamion <70228790+notTamion@users.noreply.github.com>
Date: Thu, 23 May 2024 11:02:20 +0200
Subject: [PATCH] Fix cancelling BlockPlaceEvent calling onRemove
diff --git a/src/main/java/net/minecraft/world/item/ItemStack.java b/src/main/java/net/minecraft/world/item/ItemStack.java
index babd89f39c43b0c64709d99bf8aca6cdc6ca1b24..947e2a3620d73569552c5185664b7564e908007e 100644
--- a/src/main/java/net/minecraft/world/item/ItemStack.java
+++ b/src/main/java/net/minecraft/world/item/ItemStack.java
@@ -500,9 +500,11 @@ public final class ItemStack implements DataComponentHolder {
world.capturedTileEntities.clear(); // Paper - Allow chests to be placed with NBT data; clear out block entities as chests and such will pop loot
// revert back all captured blocks
world.preventPoiUpdated = true; // CraftBukkit - SPIGOT-5710
+ world.isBlockPlaceCancelled = true; // Paper - prevent calling cleanup logic when undoing a block place upon a cancelled BlockPlaceEvent
for (BlockState blockstate : blocks) {
blockstate.update(true, false);
}
+ world.isBlockPlaceCancelled = false; // Paper - prevent calling cleanup logic when undoing a block place upon a cancelled BlockPlaceEvent
world.preventPoiUpdated = false;
// Brute force all possible updates
diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
index ba4006bc7dc31d10f37023cba7995a9621796f73..96f18fa8fb5eb856a95e94a42504c00046eb491a 100644
--- a/src/main/java/net/minecraft/world/level/Level.java
+++ b/src/main/java/net/minecraft/world/level/Level.java
@@ -152,6 +152,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
public boolean preventPoiUpdated = false; // CraftBukkit - SPIGOT-5710
public boolean captureBlockStates = false;
public boolean captureTreeGeneration = false;
+ public boolean isBlockPlaceCancelled = false; // Paper - prevent calling cleanup logic when undoing a block place upon a cancelled BlockPlaceEvent
public Map<BlockPos, org.bukkit.craftbukkit.block.CraftBlockState> capturedBlockStates = new java.util.LinkedHashMap<>(); // Paper
public Map<BlockPos, BlockEntity> capturedTileEntities = new java.util.LinkedHashMap<>(); // Paper - Retain block place order when capturing blockstates
public List<ItemEntity> captureDrops;
diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
index 7a794bb0587ce55b067c67dd17ab5be6a4773030..56227ce823ab2997e2602f0807bbd54e54454344 100644
--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
+++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
@@ -369,7 +369,7 @@ public class LevelChunk extends ChunkAccess {
boolean flag3 = iblockdata1.hasBlockEntity();
- if (!this.level.isClientSide) {
+ if (!this.level.isClientSide && !this.level.isBlockPlaceCancelled) { // Paper - prevent calling cleanup logic when undoing a block place upon a cancelled BlockPlaceEvent
iblockdata1.onRemove(this.level, blockposition, iblockdata, flag);
} else if (!iblockdata1.is(block) && flag3) {
this.removeBlockEntity(blockposition);
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