From 58c8d7cc70eec4baf44c06a6cea071b0f9b48a8c 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/server/EntityWitch.java b/src/main/java/net/minecraft/server/EntityWitch.java
index 189263bf75..0a40e2ff1b 100644
--- a/src/main/java/net/minecraft/server/EntityWitch.java
+++ b/src/main/java/net/minecraft/server/EntityWitch.java
@@ -185,9 +185,16 @@ public class EntityWitch extends EntityRaider implements IRangedEntity {
                 potionregistry = Potions.WEAKNESS;
             }
 
+            // Paper start
+            ItemStack potion = PotionUtil.a(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) entityliving.getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(potion));
+            if (!event.callEvent()) {
+                return;
+            }
+            potion = org.bukkit.craftbukkit.inventory.CraftItemStack.asNMSCopy(event.getPotion());
             EntityPotion entitypotion = new EntityPotion(this.world, this);
-
-            entitypotion.setItem(PotionUtil.a(new ItemStack(Items.SPLASH_POTION), potionregistry));
+            entitypotion.setItem(potion);
+            // Paper end
             entitypotion.pitch -= -20.0F;
             entitypotion.shoot(d0, d1 + (double) (f1 * 0.2F), d2, 0.75F, 8.0F);
             this.world.playSound((EntityHuman) null, this.locX, this.locY, this.locZ, SoundEffects.ENTITY_WITCH_THROW, this.getSoundCategory(), 1.0F, 0.8F + this.random.nextFloat() * 0.4F);
-- 
2.22.0