add back optimizing ServerLevel chunk checking methods

patches/server/0559-Add-LivingEntity-clearActiveItem.patch

@@ -0,0 +1,24 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Anrza <andrzejrzeczycki314@gmail.com>
+Date: Wed, 15 Jul 2020 12:08:49 +0200
+Subject: [PATCH] Add LivingEntity#clearActiveItem
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+index bb4896eb52ae8031b7374dfdc408da6f2f3cf68e..4b5b9b78356745f6218cd0eb7acebb5bd3879c6b 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+@@ -778,6 +778,13 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
+         return getHandle().getUseItem().asBukkitMirror();
+     }
+ 
++    // Paper start
++    @Override
++    public void clearActiveItem() {
++        getHandle().stopUsingItem();
++    }
++    // Paper end
++
+     @Override
+     public int getItemUseRemainingTime() {
+         return getHandle().getUseItemRemainingTicks();