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path: root/Spigot-Server-Patches/0754-Reset-villager-inventory-on-cancelled-pickup-event.patch
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: BillyGalbreath <blake.galbreath@gmail.com>
Date: Tue, 1 Jun 2021 22:05:08 -0500
Subject: [PATCH] Reset villager inventory on cancelled pickup event


diff --git a/src/main/java/net/minecraft/world/InventorySubcontainer.java b/src/main/java/net/minecraft/world/InventorySubcontainer.java
index 6bbecc5ae98b4e3b480e89139354e5861eda344d..fc18c6c3d4b970552d2fdb64d4225ab1924ddf8f 100644
--- a/src/main/java/net/minecraft/world/InventorySubcontainer.java
+++ b/src/main/java/net/minecraft/world/InventorySubcontainer.java
@@ -34,6 +34,16 @@ public class InventorySubcontainer implements IInventory, AutoRecipeOutput {
         return this.items;
     }
 
+    // Paper start
+    public void setContents(List<ItemStack> items) {
+        this.items.clear();
+        for(int i = 0; i < items.size(); i++) {
+            this.items.set(i, items.get(i));
+        }
+        this.update();
+    }
+    // Paper end
+
     public void onOpen(CraftHumanEntity who) {
         transaction.add(who);
     }
@@ -146,6 +156,7 @@ public class InventorySubcontainer implements IInventory, AutoRecipeOutput {
         return itemstack;
     }
 
+    public ItemStack addItem(ItemStack itemstack) { return a(itemstack); } // Paper - OBFHELPER
     public ItemStack a(ItemStack itemstack) {
         ItemStack itemstack1 = itemstack.cloneItemStack();
 
diff --git a/src/main/java/net/minecraft/world/entity/npc/EntityVillager.java b/src/main/java/net/minecraft/world/entity/npc/EntityVillager.java
index c29f05b6fd0664345d8d09f898777a3e44f866c4..85374ac8f5460790de03b47d7c3ce19ed5596afe 100644
--- a/src/main/java/net/minecraft/world/entity/npc/EntityVillager.java
+++ b/src/main/java/net/minecraft/world/entity/npc/EntityVillager.java
@@ -845,15 +845,19 @@ public class EntityVillager extends EntityVillagerAbstract implements Reputation
             }
 
             // CraftBukkit start
-            ItemStack remaining = new InventorySubcontainer(inventorysubcontainer).a(itemstack);
-            if (CraftEventFactory.callEntityPickupItemEvent(this, entityitem, remaining.getCount(), false).isCancelled()) {
+            // Paper start
+            List<ItemStack> contentsSnapshot = new java.util.ArrayList<>(inventorysubcontainer.getContents());
+            ItemStack itemstack1 = inventorysubcontainer.addItem(itemstack);
+            if (CraftEventFactory.callEntityPickupItemEvent(this, entityitem, itemstack1.getCount(), false).isCancelled()) {
+                inventorysubcontainer.setContents(contentsSnapshot);
+                // Paper end
                 return;
             }
             // CraftBukkit end
 
             this.a(entityitem);
             this.receive(entityitem, itemstack.getCount());
-            ItemStack itemstack1 = inventorysubcontainer.a(itemstack);
+            // ItemStack itemstack1 = inventorysubcontainer.a(itemstack); // Paper - moved up
 
             if (itemstack1.isEmpty()) {
                 entityitem.die();