PaperMC/Spigot-Server-Patches/Fix-curing-zombie-villager-discount-exploit.patch
Jason Penilla 9db95fbc63 Improve zombie villager curing exploit fix (#5054)
Instead of completely resetting a Villager's reputation for all players each time they are cured, we now only reset the relevant part of the reputation for only that player. This means the exploit is fixed and players cannot stack multiple cures until prices are down to 1, but doesn't have the same side effects that are commonly complained about with the current exploit fix.
2021-01-15 09:40:10 -08:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: BillyGalbreath <blake.galbreath@gmail.com>
Date: Tue, 8 Dec 2020 20:14:20 -0600
Subject: [PATCH] Fix curing zombie villager discount exploit
This fixes the exploit used to gain absurd trading discounts with infecting
and curing a villager on repeat by simply resetting the relevant part of
the reputation when it is cured.
diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -0,0 +0,0 @@ public class PaperWorldConfig {
private void fixClimbingBypassingCrammingRule() {
fixClimbingBypassingCrammingRule = getBoolean("fix-climbing-bypassing-cramming-rule", fixClimbingBypassingCrammingRule);
}
+
+ public boolean fixCuringZombieVillagerDiscountExploit = true;
+ private void fixCuringExploit() {
+ fixCuringZombieVillagerDiscountExploit = getBoolean("game-mechanics.fix-curing-zombie-villager-discount-exploit", fixCuringZombieVillagerDiscountExploit);
+ }
}
diff --git a/src/main/java/net/minecraft/server/EntityVillager.java b/src/main/java/net/minecraft/server/EntityVillager.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/server/EntityVillager.java
+++ b/src/main/java/net/minecraft/server/EntityVillager.java
@@ -0,0 +0,0 @@ public class EntityVillager extends EntityVillagerAbstract implements Reputation
@Override
public void a(ReputationEvent reputationevent, Entity entity) {
if (reputationevent == ReputationEvent.a) {
+ // Paper start - fix MC-181190
+ if (world.paperConfig.fixCuringZombieVillagerDiscountExploit) {
+ final Reputation.a playerReputation = this.getReputation().getReputations().get(entity.getUniqueID());
+ if (playerReputation != null) {
+ playerReputation.removeReputationForType(ReputationType.MAJOR_POSITIVE);
+ playerReputation.removeReputationForType(ReputationType.MINOR_POSITIVE);
+ }
+ }
+ // Paper end
this.by.a(entity.getUniqueID(), ReputationType.MAJOR_POSITIVE, 20);
this.by.a(entity.getUniqueID(), ReputationType.MINOR_POSITIVE, 25);
} else if (reputationevent == ReputationEvent.e) {
diff --git a/src/main/java/net/minecraft/server/Reputation.java b/src/main/java/net/minecraft/server/Reputation.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/server/Reputation.java
+++ b/src/main/java/net/minecraft/server/Reputation.java
@@ -0,0 +0,0 @@ public class Reputation {
}
+ public final void removeReputationForType(ReputationType reputationType) { this.b(reputationType); } // Paper - OBFHELPER
public void b(ReputationType reputationtype) {
this.a.removeInt(reputationtype);
}