PaperMC/patches/server/0139-Item-canEntityPickup.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: BillyGalbreath <Blake.Galbreath@GMail.com>
Date: Fri, 5 May 2017 03:57:17 -0500
Subject: [PATCH] Item#canEntityPickup


diff --git a/src/main/java/net/minecraft/world/entity/Mob.java b/src/main/java/net/minecraft/world/entity/Mob.java
index 14d1222286c7387eca828a9380053f14e4539b3c..b740d931ad7ad81bf94afa62a9ae44a2fe9549d4 100644
--- a/src/main/java/net/minecraft/world/entity/Mob.java
+++ b/src/main/java/net/minecraft/world/entity/Mob.java
@@ -712,6 +712,11 @@ public abstract class Mob extends LivingEntity implements EquipmentUser, Targeti
                 ItemEntity entityitem = (ItemEntity) iterator.next();
 
                 if (!entityitem.isRemoved() && !entityitem.getItem().isEmpty() && !entityitem.hasPickUpDelay() && this.wantsToPickUp(entityitem.getItem())) {
+                    // Paper start - Item#canEntityPickup
+                    if (!entityitem.canMobPickup) {
+                        continue;
+                    }
+                    // Paper end - Item#canEntityPickup
                     this.pickUpItem(entityitem);
                 }
             }
diff --git a/src/main/java/net/minecraft/world/entity/item/ItemEntity.java b/src/main/java/net/minecraft/world/entity/item/ItemEntity.java
index 16e3bdf6a2789a0828fc9d879b441fa4bd12d428..707fe72003a254a84ceef8a0572fff52997a4129 100644
--- a/src/main/java/net/minecraft/world/entity/item/ItemEntity.java
+++ b/src/main/java/net/minecraft/world/entity/item/ItemEntity.java
@@ -59,6 +59,7 @@ public class ItemEntity extends Entity implements TraceableEntity {
     public UUID target;
     public final float bobOffs;
     private int lastTick = MinecraftServer.currentTick - 1; // CraftBukkit
+    public boolean canMobPickup = true; // Paper - Item#canEntityPickup
 
     public ItemEntity(EntityType<? extends ItemEntity> type, Level world) {
         super(type, world);
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftItem.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftItem.java
index fb3738f4c558796f41e3327dd41b8aec68007a8a..5620a0849fda49313c68edfd747fedd09641a3d5 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftItem.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftItem.java
@@ -63,6 +63,18 @@ public class CraftItem extends CraftEntity implements Item {
         }
     }
 
+    // Paper start
+    @Override
+    public boolean canMobPickup() {
+        return this.getHandle().canMobPickup;
+    }
+
+    @Override
+    public void setCanMobPickup(boolean canMobPickup) {
+        this.getHandle().canMobPickup = canMobPickup;
+    }
+    // Paper end
+
     @Override
     public void setOwner(UUID uuid) {
         this.getHandle().setTarget(uuid);