4104545b11
"It was from a different time before books were as jank as they are now. As time has gone on they've only proven to be worse and worse."
28 lines
1.6 KiB
Diff
28 lines
1.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: David Slovikosky <davidslovikosky@gmail.com>
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Date: Tue, 9 Jun 2020 00:10:03 -0700
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Subject: [PATCH] Fix missing chunks due to integer overflow
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This patch fixes a bug in the WorldChunkManagerTheEnd class where the distance
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from 0,0 squared overflows the maximum size of an integer. The overflow leads
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to hard chunk borders around 370,000 blocks from 0,0. After this cutoff there
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is a few hundred thousand block gap before end land resuming to generate at
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530,000 blocks from spawn. This is due to the integer flipping back and forth.
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The fix for the issue is quite simple, casting chunk coordinates to longs
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allows the distance calculation to avoid overflow and work as intended.
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diff --git a/src/main/java/net/minecraft/world/level/biome/TheEndBiomeSource.java b/src/main/java/net/minecraft/world/level/biome/TheEndBiomeSource.java
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index 7f7b0c961a76119b6004da03fe01ff4e2ae41628..9a64ab092ac8616ed8b9ea5c1e8677dda5c4333c 100644
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--- a/src/main/java/net/minecraft/world/level/biome/TheEndBiomeSource.java
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+++ b/src/main/java/net/minecraft/world/level/biome/TheEndBiomeSource.java
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@@ -84,7 +84,7 @@ public class TheEndBiomeSource extends BiomeSource {
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int l = j / 2;
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int m = i % 2;
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int n = j % 2;
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- float f = 100.0F - Mth.sqrt((float)(i * i + j * j)) * 8.0F;
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+ float f = 100.0F - Mth.sqrt((long) i * (long) i + (long) j * (long) j) * 8.0F; // Paper - cast ints to long to avoid integer overflow
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f = Mth.clamp(f, -100.0F, 80.0F);
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for(int o = -12; o <= 12; ++o) {
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