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Paper/patches/server/0417-Use-seed-based-lookup-for-Treasure-Maps-Fixes-lag-fr.patch

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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
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index e58ba9c46e6de59b55c6471a44e1a5f158e70e07..f883e1bc4150bc074f1d8363a95b4eae16f3828e 100644
--- a/src/main/java/net/minecraft/world/item/MapItem.java
+++ b/src/main/java/net/minecraft/world/item/MapItem.java
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@@ -250,14 +250,13 @@ public class MapItem extends ComplexItem {
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boolean[] aboolean = new boolean[16384];
int l = j / i - 64;
int i1 = k / i - 64;
- BlockPos.MutableBlockPos blockposition_mutableblockposition = new BlockPos.MutableBlockPos();
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int j1;
int k1;
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for (j1 = 0; j1 < 128; ++j1) {
for (k1 = 0; k1 < 128; ++k1) {
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- Holder<Biome> holder = world.getBiome(blockposition_mutableblockposition.set((l + k1) * i, 0, (i1 + j1) * i));
+ Holder<Biome> holder = world.getUncachedNoiseBiome((l + k1) * i, 0, (i1 + j1) * i); // Paper
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aboolean[j1 * 128 + k1] = holder.is(BiomeTags.WATER_ON_MAP_OUTLINES);
}