Paper/patches/server/0909-Expand-LingeringPotion-API.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Tamion <70228790+notTamion@users.noreply.github.com>
Date: Sat, 4 Nov 2023 23:57:05 +0100
Subject: [PATCH] Expand LingeringPotion API


diff --git a/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java b/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java
index 5c6cb752f61c3f3c2960a337173fb7dfe86cc1d3..86c4b593a97431efd062b8c9d86bf92269c00536 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java
@@ -274,7 +274,7 @@ public class ThrownPotion extends ThrowableItemProjectile implements ItemSupplie
         boolean noEffects = potioncontents.hasEffects(); // Paper - Fix potions splash events
         // CraftBukkit start
         org.bukkit.event.entity.LingeringPotionSplashEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callLingeringPotionSplashEvent(this, position, entityareaeffectcloud);
-        if (!(event.isCancelled() || entityareaeffectcloud.isRemoved() || (noEffects && !entityareaeffectcloud.potionContents.hasEffects()))) { // Paper - don't spawn area effect cloud if the effects were empty and not changed during the event handling
+        if (!(event.isCancelled() || entityareaeffectcloud.isRemoved() || (!event.allowsEmptyCreation() && (noEffects && !entityareaeffectcloud.potionContents.hasEffects())))) { // Paper - don't spawn area effect cloud if the effects were empty and not changed during the event handling
             this.level().addFreshEntity(entityareaeffectcloud);
         } else {
             entityareaeffectcloud.discard(null); // CraftBukkit - add Bukkit remove cause