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ae80a251fc
The chunk system does not allow ticket levels below 0, so we need to add tickets for each individual chunk instead.
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 06ae6347d2c9666cb64aea2bea9ff946324015d9..7db77a36701e766c148e91d8313838d307855d8a 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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@@ -2672,6 +2672,12 @@ 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 bf2e79c50092acd13e97ab6e32471a9c527a524e..6c2d4d6f3a36ab452dfd3c33f66e54f152906639 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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