Paper/patches/server/0884-Don-t-load-chunks-for-supporting-block-checks.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

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Wed, 5 Jul 2023 23:11:53 +0100
Subject: [PATCH] Don't load chunks for supporting block checks
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index c173ecd1283331afcf4db010e65764e5ed6e1eff..626f2180b87daa1c00e97dc24b1a78aec4d9f033 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -1200,7 +1200,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
}
protected BlockPos getOnPos(float offset) {
- if (this.mainSupportingBlockPos.isPresent()) {
+ if (this.mainSupportingBlockPos.isPresent() && this.level().getChunkIfLoadedImmediately(this.mainSupportingBlockPos.get()) != null) { // Paper - ensure no loads
BlockPos blockposition = (BlockPos) this.mainSupportingBlockPos.get();
if (offset <= 1.0E-5F) {