Paper/patches/server/0541-Add-HiddenPotionEffect-API.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Tamion <70228790+notTamion@users.noreply.github.com>
Date: Sun, 5 Nov 2023 09:51:28 +0100
Subject: [PATCH] Add HiddenPotionEffect API

== AT ==
public net.minecraft.world.effect.MobEffectInstance hiddenEffect

diff --git a/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionUtil.java b/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionUtil.java
index 01af4db5d0f17ea2943e5c464d4122a358503bc1..cb11f0624e4e65aa06bfaaec90729ee536cd53a0 100644
--- a/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionUtil.java
+++ b/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionUtil.java
@@ -78,6 +78,7 @@ public class CraftPotionUtil {
 
     public static MobEffectInstance fromBukkit(PotionEffect effect) {
         Holder<MobEffect> type = CraftPotionEffectType.bukkitToMinecraftHolder(effect.getType());
+        // Paper - Note: do not copy over the hidden effect, as this method is only used for applying to entities which we do not want to convert over.
         return new MobEffectInstance(type, effect.getDuration(), effect.getAmplifier(), effect.isAmbient(), effect.hasParticles(), effect.hasIcon()); // Paper
     }
 
@@ -87,7 +88,7 @@ public class CraftPotionUtil {
         int duration = effect.getDuration();
         boolean ambient = effect.isAmbient();
         boolean particles = effect.isVisible();
-        return new PotionEffect(type, duration, amp, ambient, particles, effect.showIcon()); // Paper
+        return new PotionEffect(type, duration, amp, ambient, particles, effect.showIcon(), effect.hiddenEffect == null ? null : toBukkit(effect.hiddenEffect)); // Paper
     }
 
     public static boolean equals(Holder<MobEffect> mobEffect, PotionEffectType type) {