Paper/patches/server/0197-WitchThrowPotionEvent.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 16 May 2018 20:44:58 -0400
Subject: [PATCH] WitchThrowPotionEvent

Fired when a witch throws a potion at a player

diff --git a/src/main/java/net/minecraft/world/entity/monster/Witch.java b/src/main/java/net/minecraft/world/entity/monster/Witch.java
index 6a6b8672e65212dc2a1d837563d623b8bce8da28..0341a1cf05865f1a182a25adc5651f80ae09290a 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Witch.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Witch.java
@@ -236,9 +236,16 @@ public class Witch extends Raider implements RangedAttackMob {
                 potionregistry = Potions.WEAKNESS;
             }
 
+            // Paper start
+            ItemStack potion = PotionUtils.setPotion(new ItemStack(Items.SPLASH_POTION), potionregistry);
+            com.destroystokyo.paper.event.entity.WitchThrowPotionEvent event = new com.destroystokyo.paper.event.entity.WitchThrowPotionEvent((org.bukkit.entity.Witch) this.getBukkitEntity(), (org.bukkit.entity.LivingEntity) target.getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(potion));
+            if (!event.callEvent()) {
+                return;
+            }
+            potion = org.bukkit.craftbukkit.inventory.CraftItemStack.asNMSCopy(event.getPotion());
             ThrownPotion entitypotion = new ThrownPotion(this.level(), this);
-
-            entitypotion.setItem(PotionUtils.setPotion(new ItemStack(Items.SPLASH_POTION), potionregistry));
+            entitypotion.setItem(potion);
+            // Paper end
             entitypotion.setXRot(entitypotion.getXRot() - -20.0F);
             entitypotion.shoot(d0, d1 + d3 * 0.2D, d2, 0.75F, 8.0F);
             if (!this.isSilent()) {