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adadf16548
I'm not sure it was really helping, and now suspecting it might be causing issues Movement sucks
29 lines
1.6 KiB
Diff
29 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/server/WorldChunkManagerTheEnd.java b/src/main/java/net/minecraft/server/WorldChunkManagerTheEnd.java
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index 3abf1a61dfdb89c6df9338bc4947a64be5c91e2f..631a028dd262476f257c382f488320fee42584cd 100644
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--- a/src/main/java/net/minecraft/server/WorldChunkManagerTheEnd.java
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+++ b/src/main/java/net/minecraft/server/WorldChunkManagerTheEnd.java
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@@ -50,7 +50,9 @@ public class WorldChunkManagerTheEnd extends WorldChunkManager {
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int l = j / 2;
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int i1 = i % 2;
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int j1 = j % 2;
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- float f = 100.0F - MathHelper.c((float) (i * i + j * j)) * 8.0F;
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+ // Paper start - cast ints to long to avoid integer overflow
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+ float f = 100.0F - MathHelper.sqrt((long) i * (long) i + (long) j * (long) j) * 8.0F;
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+ // Paper end
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f = MathHelper.a(f, -100.0F, 80.0F);
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