PaperMC/patches/server/0451-Use-seed-based-lookup-for-Treasure-Maps-Fixes-lag-fr.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 7 Jun 2020 19:25:13 -0400
Subject: [PATCH] Use seed based lookup for Treasure Maps - Fixes lag from
 carto/sunken maps


diff --git a/src/main/java/net/minecraft/world/item/MapItem.java b/src/main/java/net/minecraft/world/item/MapItem.java
index d44cbcfc9e59365149823b594e3b313ed48ec511..24700c7e6a32cc30c97dccc21c5f3e3e6b6438e5 100644
--- a/src/main/java/net/minecraft/world/item/MapItem.java
+++ b/src/main/java/net/minecraft/world/item/MapItem.java
@@ -258,7 +258,7 @@ public class MapItem extends ComplexItem {
 
                 for (l = 0; l < 128 * i; ++l) {
                     for (i1 = 0; i1 < 128 * i; ++i1) {
-                        abiomebase[l * 128 * i + i1] = world.getBiome(new BlockPos((j / i - 64) * i + i1, 0, (k / i - 64) * i + l));
+                        abiomebase[l * 128 * i + i1] = world.getUncachedNoiseBiome((j / i - 64) * i + i1, 0, (k / i - 64) * i + l); // Paper
                     }
                 }