From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Aikar 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/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java index 652c909eaa9e76c29427b7220adf9fe4947c2e84..c0a53e0effda295b9a4a798a0c7b29bd6ed9e435 100644 --- a/src/main/java/net/minecraft/server/level/ServerLevel.java +++ b/src/main/java/net/minecraft/server/level/ServerLevel.java @@ -2073,6 +2073,12 @@ public class ServerLevel extends Level implements WorldGenLevel { public void onTickingEnd(Entity entity) { ServerLevel.this.entityTickList.remove(entity); + // Paper start - Reset pearls when they stop being ticked + if (paperConfig().fixes.disableUnloadedChunkEnderpearlExploit && entity instanceof net.minecraft.world.entity.projectile.ThrownEnderpearl pearl) { + pearl.cachedOwner = null; + pearl.ownerUUID = null; + } + // Paper end } public void onTrackingStart(Entity entity) { 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 cf8498165065c7db1be9cf7de492c1a41817cbf1..f550686d1ae45a9ecb406e999d02dba0cf022c58 100644 --- a/src/main/java/net/minecraft/world/entity/projectile/Projectile.java +++ b/src/main/java/net/minecraft/world/entity/projectile/Projectile.java @@ -88,6 +88,7 @@ public abstract class Projectile extends Entity { protected void readAdditionalSaveData(CompoundTag nbt) { if (nbt.hasUUID("Owner")) { this.ownerUUID = nbt.getUUID("Owner"); + if (this instanceof ThrownEnderpearl && this.level != null && this.level.paperConfig().fixes.disableUnloadedChunkEnderpearlExploit) { this.ownerUUID = null; } // Paper - Don't store shooter name for pearls to block enderpearl travel exploit } this.leftOwner = nbt.getBoolean("LeftOwner");