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Paper-Old/Spigot-Server-Patches/0178-Optimize-ItemStack.isEmpty.patch
Aikar 98555e9b90
LivingEntity Hand Raised/Item Use API
How long an entity has raised hands to charge an attack or use an item

Also aliased isHandsRaised for isChargingAttack in RangedEntity
2018-06-29 00:55:29 -04:00

32 Zeilen
1.4 KiB
Diff

From b70ebdb4c08ced933b85774c1a3a4955a976059a 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 5047a57e9..736686bed 100644
--- a/src/main/java/net/minecraft/server/ItemStack.java
+++ b/src/main/java/net/minecraft/server/ItemStack.java
@@ -144,9 +144,15 @@ public final class ItemStack {
this.F();
}
+ // Paper start - optimize isEmpty
+ private static Item airItem;
public boolean isEmpty() {
- return this == ItemStack.a ? true : (this.item != null && this.item != Item.getItemOf(Blocks.AIR) ? (this.count <= 0 ? true : this.damage < -32768 || this.damage > '\uffff') : true);
+ if (airItem == null) {
+ airItem = Item.REGISTRY.get(new MinecraftKey("air"));
+ }
+ return this == ItemStack.a || this.item == null || this.item == airItem || (this.count <= 0 || (this.damage < -32768 || this.damage > '\uffff'));
}
+ // Paper end
public static void a(DataConverterManager dataconvertermanager) {
dataconvertermanager.a(DataConverterTypes.ITEM_INSTANCE, (DataInspector) (new DataInspectorBlockEntity()));
--
2.18.0