Paper/Spigot-Server-Patches/0491-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/ItemWorldMap.java b/src/main/java/net/minecraft/server/ItemWorldMap.java
index 63b112b38a51873cf5769ad8506c3fdb9d52d42c..910d1b3788fa713cadf2c8a56f595282ba6c1247 100644
--- a/src/main/java/net/minecraft/server/ItemWorldMap.java
+++ b/src/main/java/net/minecraft/server/ItemWorldMap.java
@@ -229,7 +229,7 @@ public class ItemWorldMap extends ItemWorldMapBase {
 
                 for (l = 0; l < 128 * i; ++l) {
                     for (i1 = 0; i1 < 128 * i; ++i1) {
-                        abiomebase[l * 128 * i + i1] = worldserver.getBiome(new BlockPosition((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
                     }
                 }
 
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 5d299a65417ff17eae3dfe52841c1a27a6d75677..bb73dc2cfca633f85aa0aa1c988d3cdd86be8e4e 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -307,8 +307,8 @@ public class WorldServer extends World implements GeneratorAccessSeed {
         this.worldDataServer.setThundering(flag1);
     }
 
-    @Override
-    public BiomeBase a(int i, int j, int k) {
+    public BiomeBase getBiomeBySeed(int i, int j, int k) { return a(i, j, k); } // Paper - OBFHELPER
+    @Override public BiomeBase a(int i, int j, int k) {
         return this.getChunkProvider().getChunkGenerator().getWorldChunkManager().getBiome(i, j, k);
     }