Paper/Remapped-Spigot-Server-Patches/0211-Block-Enderpearl-Travel-Exploit.patch
2021-06-11 13:56:17 +02:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 30 Apr 2018 17:15:26 -0400
Subject: [PATCH] Block Enderpearl Travel Exploit
Players are able to use alt accounts and enderpearls to travel
long distances utilizing the pearls in unloaded chunks and loading
the chunk later when convenient.
This disables that by not saving the thrower when the chunk is unloaded.
This is mainly useful for survival servers that do not allow freeform teleporting.
diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index cebf1a623a9bec72d60fdd23dda01868ef6431d4..e8e1e7dafaf1c105b2f58cf3e118e3d665dc50ec 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -363,4 +363,10 @@ public class PaperWorldConfig {
private void disableSprintInterruptionOnAttack() {
disableSprintInterruptionOnAttack = getBoolean("game-mechanics.disable-sprint-interruption-on-attack", false);
}
+
+ public boolean disableEnderpearlExploit = true;
+ private void disableEnderpearlExploit() {
+ disableEnderpearlExploit = getBoolean("game-mechanics.disable-unloaded-chunk-enderpearl-exploit", disableEnderpearlExploit);
+ log("Disable Unloaded Chunk Enderpearl Exploit: " + (disableEnderpearlExploit ? "enabled" : "disabled"));
+ }
}
diff --git a/src/main/java/net/minecraft/world/entity/projectile/Projectile.java b/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
index 14ed4f212a9c9c3128c4ddbef7b2e243c925b509..16b554675a276471851846d4f2bea06fdcc166d9 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
@@ -62,6 +62,7 @@ public abstract class Projectile extends Entity {
protected void readAdditionalSaveData(CompoundTag tag) {
if (tag.hasUUID("Owner")) {
this.ownerUUID = tag.getUUID("Owner");
+ if (this instanceof ThrownEnderpearl && this.level != null && this.level.paperConfig.disableEnderpearlExploit) { this.ownerUUID = null; } // Paper - Don't store shooter name for pearls to block enderpearl travel exploit
}
this.leftOwner = tag.getBoolean("LeftOwner");