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89d51d5f29
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable. It should be noted that this decision does not promise all future exploits will be configurable.
40 lines
2.4 KiB
Diff
40 lines
2.4 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Warrior <50800980+Warriorrrr@users.noreply.github.com>
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Date: Mon, 7 Aug 2023 12:58:28 +0200
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Subject: [PATCH] Cache map ids on item frames
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diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
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index 1f0931bdd4d82c05d7b5f8b8e5c2cc6d23905c73..da45984c9b2d3a55256efddde94580505f692655 100644
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--- a/src/main/java/net/minecraft/server/level/ServerEntity.java
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+++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
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@@ -118,7 +118,7 @@ public class ServerEntity {
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ItemStack itemstack = entityitemframe.getItem();
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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
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- Integer integer = MapItem.getMapId(itemstack);
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+ Integer integer = entityitemframe.cachedMapId; // Paper - Perf: Cache map ids on item frames
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MapItemSavedData worldmap = MapItem.getSavedData(integer, this.level);
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if (worldmap != null) {
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diff --git a/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java b/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java
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index 0cd57021cf308984415ca670f727ae61ac343fe7..80303f9466b8c7097151be313afc9a383693d18a 100644
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--- a/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java
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+++ b/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java
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@@ -50,6 +50,7 @@ public class ItemFrame extends HangingEntity {
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public static final int NUM_ROTATIONS = 8;
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public float dropChance;
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public boolean fixed;
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+ public Integer cachedMapId; // Paper - Perf: Cache map ids on item frames
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public ItemFrame(EntityType<? extends ItemFrame> type, Level world) {
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super(type, world);
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@@ -388,6 +389,7 @@ public class ItemFrame extends HangingEntity {
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}
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private void onItemChanged(ItemStack stack) {
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+ this.cachedMapId = MapItem.getMapId(stack); // Paper - Perf: Cache map ids on item frames
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if (!stack.isEmpty() && stack.getFrame() != this) {
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stack.setEntityRepresentation(this);
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}
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