From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Wed, 2 Dec 2020 21:03:02 -0800
Subject: [PATCH] Add config for mobs immune to default effects


diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 60c9bae18f277a90b464a6f1f55d074ed9046aff..f01ace6a6e517ff3d3cd66e69e2594ae3d702072 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -1172,7 +1172,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
         if (this.getMobType() == MobType.UNDEAD) {
             MobEffect mobeffectlist = effect.getEffect();
 
-            if (mobeffectlist == MobEffects.REGENERATION || mobeffectlist == MobEffects.POISON) {
+            if ((mobeffectlist == MobEffects.REGENERATION || mobeffectlist == MobEffects.POISON) && this.level().paperConfig().entities.mobEffects.undeadImmuneToCertainEffects) { // Paper - Add config for mobs immune to default effects
                 return false;
             }
         }
diff --git a/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java b/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
index bd9453a92e1b2eca0a6dc56aef921e31a18a20c3..25f611b35a5710c595574d2d6ed50c442ca55721 100644
--- a/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
+++ b/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
@@ -607,7 +607,7 @@ public class WitherBoss extends Monster implements PowerableMob, RangedAttackMob
 
     @Override
     public boolean canBeAffected(MobEffectInstance effect) {
-        return effect.getEffect() == MobEffects.WITHER ? false : super.canBeAffected(effect);
+        return effect.getEffect() == MobEffects.WITHER && this.level().paperConfig().entities.mobEffects.immuneToWitherEffect.wither ? false : super.canBeAffected(effect); // Paper - Add config for mobs immune to default effects
     }
 
     private class WitherDoNothingGoal extends Goal {
diff --git a/src/main/java/net/minecraft/world/entity/monster/Spider.java b/src/main/java/net/minecraft/world/entity/monster/Spider.java
index 6241baccd3fdee59175f616cdf69d3873074f855..4d5cfaa58bdf4e6cb975134004d14c591f6e85fa 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Spider.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Spider.java
@@ -135,7 +135,7 @@ public class Spider extends Monster {
 
     @Override
     public boolean canBeAffected(MobEffectInstance effect) {
-        return effect.getEffect() == MobEffects.POISON ? false : super.canBeAffected(effect);
+        return effect.getEffect() == MobEffects.POISON && this.level().paperConfig().entities.mobEffects.spidersImmuneToPoisonEffect ? false : super.canBeAffected(effect); // Paper - Add config for mobs immune to default effects
     }
 
     public boolean isClimbing() {
diff --git a/src/main/java/net/minecraft/world/entity/monster/WitherSkeleton.java b/src/main/java/net/minecraft/world/entity/monster/WitherSkeleton.java
index 62943d43b701d9ae6d955003f4e7658f76d5bdb3..20a65c11ededcd7170704b70118da6200151fbab 100644
--- a/src/main/java/net/minecraft/world/entity/monster/WitherSkeleton.java
+++ b/src/main/java/net/minecraft/world/entity/monster/WitherSkeleton.java
@@ -128,6 +128,6 @@ public class WitherSkeleton extends AbstractSkeleton {
 
     @Override
     public boolean canBeAffected(MobEffectInstance effect) {
-        return effect.getEffect() == MobEffects.WITHER ? false : super.canBeAffected(effect);
+        return effect.getEffect() == MobEffects.WITHER && this.level().paperConfig().entities.mobEffects.immuneToWitherEffect.witherSkeleton ? false : super.canBeAffected(effect); // Paper - Add config for mobs immune to default effects
     }
 }