mirror of
https://github.com/PaperMC/Paper.git
synced 2024-11-24 08:06:41 +01:00
27 lines
1.6 KiB
Diff
27 lines
1.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: David Slovikosky <davidslovikosky@gmail.com>
|
|
Date: Tue, 9 Jun 2020 00:10:03 -0700
|
|
Subject: [PATCH] Fix missing chunks due to integer overflow
|
|
|
|
This patch fixes a bug in the WorldChunkManagerTheEnd class where the distance
|
|
from 0,0 squared overflows the maximum size of an integer. The overflow leads
|
|
to hard chunk borders around 370,000 blocks from 0,0. After this cutoff there
|
|
is a few hundred thousand block gap before end land resuming to generate at
|
|
530,000 blocks from spawn. This is due to the integer flipping back and forth.
|
|
|
|
The fix for the issue is quite simple, casting chunk coordinates to longs
|
|
allows the distance calculation to avoid overflow and work as intended.
|
|
|
|
diff --git a/src/main/java/net/minecraft/world/level/biome/TheEndBiomeSource.java b/src/main/java/net/minecraft/world/level/biome/TheEndBiomeSource.java
|
|
index 7f7b0c961a76119b6004da03fe01ff4e2ae41628..9a64ab092ac8616ed8b9ea5c1e8677dda5c4333c 100644
|
|
--- a/src/main/java/net/minecraft/world/level/biome/TheEndBiomeSource.java
|
|
+++ b/src/main/java/net/minecraft/world/level/biome/TheEndBiomeSource.java
|
|
@@ -84,7 +84,7 @@ public class TheEndBiomeSource extends BiomeSource {
|
|
int l = j / 2;
|
|
int m = i % 2;
|
|
int n = j % 2;
|
|
- float f = 100.0F - Mth.sqrt((float)(i * i + j * j)) * 8.0F;
|
|
+ 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
|
|
f = Mth.clamp(f, -100.0F, 80.0F);
|
|
|
|
for(int o = -12; o <= 12; ++o) {
|