Restore 0129-Optimize-World.isLoaded-BlockPosition-Z.patch

Spigot-Server-Patches/0132-Optimize-ItemStack.isEmpty.patch

@@ -0,0 +1,23 @@
+From 1b09bcf4e69cb92dc412a07237446afbd101ecf6 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Wed, 21 Dec 2016 03:48:29 -0500
+Subject: [PATCH] Optimize ItemStack.isEmpty()
+
+Remove hashMap lookup every check, simplify code to remove ternary
+
+diff --git a/src/main/java/net/minecraft/server/ItemStack.java b/src/main/java/net/minecraft/server/ItemStack.java
+index 0a1596ff06..2d0a8c58fb 100644
+--- a/src/main/java/net/minecraft/server/ItemStack.java
++++ b/src/main/java/net/minecraft/server/ItemStack.java
+@@ -150,7 +150,7 @@ public final class ItemStack {
+     }
+ 
+     public boolean isEmpty() {
+-        return this == ItemStack.a ? true : (this.getItem() != null && this.getItem() != Items.AIR ? this.count <= 0 : true);
++        return this == ItemStack.a || this.item == null || this.item == Items.AIR || this.count <= 0; // Paper
+     }
+ 
+     public ItemStack cloneAndSubtract(int i) {
+-- 
+2.24.1
+