From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Zero <zero@cock.li>
Date: Sat, 22 Feb 2020 16:10:31 -0500
Subject: [PATCH] Configurable chance of villager zombie infection

This allows you to solve an issue in vanilla behavior where:
* On easy difficulty your villagers will NEVER get infected, meaning they will always die.
* On normal difficulty they will have a 50% of getting infected or dying.

diff --git a/src/main/java/net/minecraft/world/entity/monster/Zombie.java b/src/main/java/net/minecraft/world/entity/monster/Zombie.java
index fed8b065172f40a2a5c251f46303fc4d72c9653a..fae2c89900db222f7319b5675ef4b470beca251b 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Zombie.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Zombie.java
@@ -451,12 +451,16 @@ public class Zombie extends Monster {
     public boolean killedEntity(ServerLevel world, LivingEntity other) {
         boolean flag = super.killedEntity(world, other);
 
-        if ((world.getDifficulty() == Difficulty.NORMAL || world.getDifficulty() == Difficulty.HARD) && other instanceof Villager) {
-            Villager entityvillager = (Villager) other;
-
-            if (world.getDifficulty() != Difficulty.HARD && this.random.nextBoolean()) {
+        // Paper start
+        if (this.level().paperConfig().entities.behavior.zombieVillagerInfectionChance != 0.0 && (this.level().paperConfig().entities.behavior.zombieVillagerInfectionChance != -1.0 || world.getDifficulty() == Difficulty.NORMAL || world.getDifficulty() == Difficulty.HARD) && other instanceof Villager) {
+            if (this.level().paperConfig().entities.behavior.zombieVillagerInfectionChance == -1.0 && world.getDifficulty() != Difficulty.HARD && this.random.nextBoolean()) {
                 return flag;
             }
+            if (this.level().paperConfig().entities.behavior.zombieVillagerInfectionChance != -1.0 && (this.random.nextDouble() * 100.0) > this.level().paperConfig().entities.behavior.zombieVillagerInfectionChance) {
+                return flag;
+            } // Paper end
+
+            Villager entityvillager = (Villager) other;
             // CraftBukkit start
             flag = Zombie.zombifyVillager(world, entityvillager, this.blockPosition(), this.isSilent(), CreatureSpawnEvent.SpawnReason.INFECTION) == null;
         }