Scissors/patches/server/0020-Fixes-creative-killing-potion-effects-and-certain-po.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Video <videogamesm12@gmail.com>
Date: Mon, 11 Apr 2022 13:33:52 -0600
Subject: [PATCH] Fixes creative-killing potion effects and certain potion
 effect overflows


diff --git a/src/main/java/net/minecraft/world/effect/HealOrHarmMobEffect.java b/src/main/java/net/minecraft/world/effect/HealOrHarmMobEffect.java
index 1c7794de5f0a7238b944c9473e2cc9d011ef2306..9c594c504611b9da5fcd119284b2dcb4b59d3bf4 100644
--- a/src/main/java/net/minecraft/world/effect/HealOrHarmMobEffect.java
+++ b/src/main/java/net/minecraft/world/effect/HealOrHarmMobEffect.java
@@ -16,6 +16,11 @@ class HealOrHarmMobEffect extends InstantenousMobEffect {
     @Override
     public void applyEffectTick(LivingEntity entity, int amplifier) {
         super.applyEffectTick(entity, amplifier);
+        // Scissors start - Don't apply any healing/harming effects for Creative/Invulnerable players and cap the amplifier for those who aren't.
+        if (entity instanceof net.minecraft.world.entity.player.Player player && (player.isCreative() || player.isInvulnerable())) return;
+        amplifier = Math.min(Math.abs(amplifier), 124);
+        // Scissors end
+
         if (this.isHarm == entity.isInvertedHealAndHarm()) {
             entity.heal((float) Math.max(4 << amplifier, 0), org.bukkit.event.entity.EntityRegainHealthEvent.RegainReason.MAGIC); // CraftBukkit
         } else {
@@ -27,6 +32,10 @@ class HealOrHarmMobEffect extends InstantenousMobEffect {
     @Override
     public void applyInstantenousEffect(@Nullable Entity source, @Nullable Entity attacker, LivingEntity target, int amplifier, double proximity) {
         int j;
+        // Scissors start - Don't apply any healing/harming effects for Creative/Invulnerable players and cap the amplifier for those who aren't.
+        if (target instanceof net.minecraft.world.entity.player.Player player && (player.isCreative() || player.isInvulnerable())) return;
+        amplifier = Math.min(Math.abs(amplifier), 124);
+        // Scissors end
 
         if (this.isHarm == target.isInvertedHealAndHarm()) {
             j = (int) (proximity * (double) (4 << amplifier) + 0.5D);