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49 lines
2.9 KiB
Diff
49 lines
2.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Mon, 30 Apr 2018 17:15:26 -0400
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Subject: [PATCH] Block Enderpearl Travel Exploit
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Players are able to use alt accounts and enderpearls to travel
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long distances utilizing the pearls in unloaded chunks and loading
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the chunk later when convenient.
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This disables that by not saving the thrower when the chunk is unloaded.
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This is mainly useful for survival servers that do not allow freeform teleporting.
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Note: Currently removed as enderpearls are ticked as long as their owner is online in 1.21.2.
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Might be worth to re-add once an option to disable the above vanilla mechanic is added, to
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fully prevent enderpearl travel exploits.
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== AT ==
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public net.minecraft.world.entity.projectile.Projectile ownerUUID
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diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
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index 020ef251fd3d03c9e8fb9fc859d4ef9fc04cd3ba..17ddec036cb6135c7489efbd76121304e76c32c0 100644
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--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
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+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
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@@ -2678,6 +2678,12 @@ public class ServerLevel extends Level implements ServerEntityGetter, WorldGenLe
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public void onTickingEnd(Entity entity) {
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ServerLevel.this.entityTickList.remove(entity);
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+ // Paper start - Reset pearls when they stop being ticked
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+ if (ServerLevel.this.paperConfig().fixes.disableUnloadedChunkEnderpearlExploit && ServerLevel.this.paperConfig().misc.legacyEnderPearlBehavior && entity instanceof net.minecraft.world.entity.projectile.ThrownEnderpearl pearl) {
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+ pearl.cachedOwner = null;
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+ pearl.ownerUUID = null;
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+ }
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+ // Paper end - Reset pearls when they stop being ticked
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}
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public void onTrackingStart(Entity entity) {
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diff --git a/src/main/java/net/minecraft/world/entity/projectile/Projectile.java b/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
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index 4c71642474d97d1943db302947a4566a326b9ac3..9a7b56b653848974e1194eb4f6d40cb99a96ff57 100644
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--- a/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
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+++ b/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
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@@ -134,6 +134,7 @@ public abstract class Projectile extends Entity implements TraceableEntity {
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protected void readAdditionalSaveData(CompoundTag nbt) {
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if (nbt.hasUUID("Owner")) {
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this.setOwnerThroughUUID(nbt.getUUID("Owner"));
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+ if (this instanceof ThrownEnderpearl && this.level() != null && this.level().paperConfig().fixes.disableUnloadedChunkEnderpearlExploit && this.level().paperConfig().misc.legacyEnderPearlBehavior) { this.ownerUUID = null; } // Paper - Reset pearls when they stop being ticked; Don't store shooter name for pearls to block enderpearl travel exploit
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}
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this.leftOwner = nbt.getBoolean("LeftOwner");
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