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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Warrior <50800980+Warriorrrr@users.noreply.github.com>
Date: Mon, 7 Aug 2023 12:58:28 +0200
Subject: [PATCH] Cache map ids on item frames
diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
index 1f0931bdd4d82c05d7b5f8b8e5c2cc6d23905c73..da45984c9b2d3a55256efddde94580505f692655 100644
--- a/src/main/java/net/minecraft/server/level/ServerEntity.java
+++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
@@ -118,7 +118,7 @@ public class ServerEntity {
ItemStack itemstack = entityitemframe.getItem();
if (this.level.paperConfig().maps.itemFrameCursorUpdateInterval > 0 && this.tickCount % this.level.paperConfig().maps.itemFrameCursorUpdateInterval == 0 && itemstack.getItem() instanceof MapItem) { // CraftBukkit - Moved this.tickCounter % 10 logic here so item frames do not enter the other blocks // Paper - Make item frame map cursor update interval configurable
- Integer integer = MapItem.getMapId(itemstack);
+ Integer integer = entityitemframe.cachedMapId; // Paper - Perf: Cache map ids on item frames
MapItemSavedData worldmap = MapItem.getSavedData(integer, this.level);
if (worldmap != null) {
diff --git a/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java b/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java
index 0cd57021cf308984415ca670f727ae61ac343fe7..80303f9466b8c7097151be313afc9a383693d18a 100644
--- a/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java
+++ b/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java
@@ -50,6 +50,7 @@ public class ItemFrame extends HangingEntity {
public static final int NUM_ROTATIONS = 8;
public float dropChance;
public boolean fixed;
+ public Integer cachedMapId; // Paper - Perf: Cache map ids on item frames
public ItemFrame(EntityType<? extends ItemFrame> type, Level world) {
super(type, world);
@@ -388,6 +389,7 @@ public class ItemFrame extends HangingEntity {
}
private void onItemChanged(ItemStack stack) {
+ this.cachedMapId = MapItem.getMapId(stack); // Paper - Perf: Cache map ids on item frames
if (!stack.isEmpty() && stack.getFrame() != this) {
stack.setEntityRepresentation(this);
}
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