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/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java index 873f81c74a94f6d76edd45e34ddc476dc525b47c..69009246f12cc3acb0055af746e01097fa668e1b 100644 --- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java +++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java @@ -356,4 +356,10 @@ 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/server/IProjectile.java b/src/main/java/net/minecraft/server/IProjectile.java index 676848e2b3cfc93b0b344b76b7a88e37549a25f2..0b62041f6dc9cb0151ea55407f6706cac134f1b5 100644 --- a/src/main/java/net/minecraft/server/IProjectile.java +++ b/src/main/java/net/minecraft/server/IProjectile.java @@ -48,6 +48,7 @@ public abstract class IProjectile extends Entity { protected void loadData(NBTTagCompound nbttagcompound) { if (nbttagcompound.b("Owner")) { this.shooter = nbttagcompound.a("Owner"); + if (this instanceof EntityEnderPearl && this.world != null && this.world.paperConfig.disableEnderpearlExploit) { this.shooter = null; } // Paper - Don't store shooter name for pearls to block enderpearl travel exploit } this.d = nbttagcompound.getBoolean("LeftOwner");