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path: root/patches/server/0716-Add-config-for-mobs-immune-to-default-effects.patch
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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/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 37cb74b27763db6f4a6a68030f88c37fc731affc..8d620b537ebe9c317c1b4fc72af40ac4a22c24e7 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -717,6 +717,21 @@ public class PaperWorldConfig {
         log("Hopper Ignore Occluding Blocks: " + (hoppersIgnoreOccludingBlocks ? "enabled" : "disabled"));
     }
 
+    public boolean undeadImmuneToCertainEffects = true;
+    public boolean spidersImmuneToPoisonEffect = true;
+    public boolean witherImmuneToWitherEffect = true;
+    public boolean witherSkeletonImmuneToWitherEffect = true;
+    private void mobEffectChanges() {
+        undeadImmuneToCertainEffects = getBoolean("mob-effects.undead-immune-to-certain-effects", undeadImmuneToCertainEffects);
+        log("Undead immune to harmful effects: " + undeadImmuneToCertainEffects);
+        spidersImmuneToPoisonEffect = getBoolean("mob-effects.spiders-immune-to-poison-effect", spidersImmuneToPoisonEffect);
+        log("Spiders immune to poison effect: " + spidersImmuneToPoisonEffect);
+        witherImmuneToWitherEffect = getBoolean("mob-effects.immune-to-wither-effect.wither", witherImmuneToWitherEffect);
+        log("Wither immune to wither effect: " + witherImmuneToWitherEffect);
+        witherSkeletonImmuneToWitherEffect = getBoolean("mob-effects.immune-to-wither-effect.wither-skeleton", witherSkeletonImmuneToWitherEffect);
+        log("Wither skeleton immune to wither effect: " + witherSkeletonImmuneToWitherEffect);
+    }
+
     public boolean nerfNetherPortalPigmen = false;
     private void nerfNetherPortalPigmen() {
         nerfNetherPortalPigmen = getBoolean("game-mechanics.nerf-pigmen-from-nether-portals", nerfNetherPortalPigmen);
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index bd2e2eece61fd7fa6ab63d8926308044ceaa4012..2a16984f417967cf11838b1a05d60b9d49af91c3 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -1133,7 +1133,7 @@ public abstract class LivingEntity extends Entity {
         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.undeadImmuneToCertainEffects) { // Paper
                 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 9a5294596eb50cf4f6cf0729f6b94faaa63a5871..8c17caf00bd24adca5794774171638f298921ee7 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
@@ -602,7 +602,7 @@ 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.witherImmuneToWitherEffect ? false : super.canBeAffected(effect); // Paper
     }
 
     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 968907f6aae3f58cddac1967bcfd82cea8800912..64f0ce2981700532cb0d11fbc086bfbd08f2384d 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Spider.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Spider.java
@@ -133,7 +133,7 @@ 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.spidersImmuneToPoisonEffect ? false : super.canBeAffected(effect); // Paper
     }
 
     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 c727bbf7de71213fba410625c4a7ad90315b608a..6acc46c3a6fe7648d2cc4d0aaef063633c74c20d 100644
--- a/src/main/java/net/minecraft/world/entity/monster/WitherSkeleton.java
+++ b/src/main/java/net/minecraft/world/entity/monster/WitherSkeleton.java
@@ -122,6 +122,6 @@ 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.witherSkeletonImmuneToWitherEffect ? false : super.canBeAffected(effect); // Paper
     }
 }