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c97ce029e9
PaperMC believes that 1.16.2 is now ready for general release as we fixed the main issue plagueing the 1.16.x release, the MapLike data conversion issues. Until now, it was not safe for a server to convert a world to 1.16.2 without data conversion issues around villages and potentially other things. If you did, those MapLike errors meant something went wrong. This is now resolved. Big thanks to all those that helped, notably @BillyGalbreath and @Proximyst who did large parts of the update process with me. Please as always, backup your worlds and test before updating to 1.16.2! If you update to 1.16.2, there is no going back to an older build than this. --------------------------------- Co-authored-by: William Blake Galbreath <Blake.Galbreath@GMail.com> Co-authored-by: Mariell Hoversholm <proximyst@proximyst.com> Co-authored-by: krolik-exe <69214078+krolik-exe@users.noreply.github.com> Co-authored-by: BillyGalbreath <BillyGalbreath@users.noreply.github.com> Co-authored-by: stonar96 <minecraft.stonar96@gmail.com> Co-authored-by: Shane Freeder <theboyetronic@gmail.com> Co-authored-by: Jason <jasonpenilla2@me.com> Co-authored-by: kashike <kashike@vq.lc> Co-authored-by: Aurora <21148213+aurorasmiles@users.noreply.github.com> Co-authored-by: KennyTV <kennytv@t-online.de> Co-authored-by: commandblockguy <commandblockguy1@gmail.com> Co-authored-by: DigitalRegent <misterwener@gmail.com> Co-authored-by: ishland <ishlandmc@yeah.net>
30 lines
1.6 KiB
Diff
30 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 844ad0fbdc6e2f9aee1d25fe21dcdf53eb28d559..9c15cd303ccc2928be4e3e7080e74e8314d7e0f2 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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@@ -70,7 +70,9 @@ 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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