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33 lines
1.9 KiB
Diff
33 lines
1.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Phoenix616 <mail@moep.tv>
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Date: Sun, 7 Jun 2020 21:43:42 +0100
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Subject: [PATCH] Maps shouldn't load chunks
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Previously maps would load all chunks in a certain radius depending on
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their scale when trying to update their content. This would result in
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main thread chunk loads when they weren't really necessary, especially
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on low view distances or "slow" async chunk loads after teleports or
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other prioritisation.
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This changes it to only try to render already loaded chunks based on
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the assumption that the chunks around the player will get loaded
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eventually anyways and that maps will get checked for update every
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five ticks that movement occur in anyways.
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diff --git a/src/main/java/net/minecraft/world/item/ItemWorldMap.java b/src/main/java/net/minecraft/world/item/ItemWorldMap.java
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index b18149cf048e78fefc019b50ed8f20ff8b609f5c..a1945e9ac1dd8961c5758a22bef3908d3adf0704 100644
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--- a/src/main/java/net/minecraft/world/item/ItemWorldMap.java
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+++ b/src/main/java/net/minecraft/world/item/ItemWorldMap.java
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@@ -120,9 +120,9 @@ public class ItemWorldMap extends ItemWorldMapBase {
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int k2 = (j / i + k1 - 64) * i;
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int l2 = (k / i + l1 - 64) * i;
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Multiset<MaterialMapColor> multiset = LinkedHashMultiset.create();
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- Chunk chunk = world.getChunkAtWorldCoords(new BlockPosition(k2, 0, l2));
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+ Chunk chunk = world.getChunkIfLoaded(new BlockPosition(k2, 0, l2)); // Paper - Maps shouldn't load chunks
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- if (!chunk.isEmpty()) {
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+ if (chunk != null && !chunk.isEmpty()) { // Paper - Maps shouldn't load chunks
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ChunkCoordIntPair chunkcoordintpair = chunk.getPos();
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int i3 = k2 & 15;
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int j3 = l2 & 15;
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