PaperMC/Remapped-Spigot-Server-Patches/0489-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/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index bf4e50cd1d561456c033cda2d5c5487c5e3fe1eb..61aee2c109614a014149ae5a15ad2a28c796cb9d 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -415,8 +415,8 @@ public class ServerLevel extends net.minecraft.world.level.Level implements Worl
         this.worldDataServer.setThundering(thundering);
     }
 
-    @Override
-    public Biome getUncachedNoiseBiome(int biomeX, int biomeY, int biomeZ) {
+    public Biome getBiomeBySeed(int i, int j, int k) { return getUncachedNoiseBiome(i, j, k); } // Paper - OBFHELPER
+    @Override public Biome getUncachedNoiseBiome(int biomeX, int biomeY, int biomeZ) {
         return this.getChunkSource().getGenerator().getBiomeSource().getNoiseBiome(biomeX, biomeY, biomeZ);
     }
 
diff --git a/src/main/java/net/minecraft/world/item/MapItem.java b/src/main/java/net/minecraft/world/item/MapItem.java
index 05759dc6edaa790a5e3f2ca2e0ae27e53cfa4397..550892bc769a58991583b16295a72a162ceea788 100644
--- a/src/main/java/net/minecraft/world/item/MapItem.java
+++ b/src/main/java/net/minecraft/world/item/MapItem.java
@@ -252,7 +252,7 @@ public class MapItem extends ComplexItem {
 
                 for (l = 0; l < 128 * i; ++l) {
                     for (i1 = 0; i1 < 128 * i; ++i1) {
-                        abiomebase[l * 128 * i + i1] = worldserver.getBiome(new BlockPos((j / i - 64) * i + i1, 0, (k / i - 64) * i + l));
+                        abiomebase[l * 128 * i + i1] = worldserver.getBiomeBySeed((j / i - 64) * i + i1, 0, (k / i - 64) * i + l); // Paper
                     }
                 }