PaperMC/patches/server/0834-Don-t-use-level-random-in-entity-constructors.patch
Jake Potrebic 90fe0d58a5
Updated Upstream (Bukkit/CraftBukkit/Spigot) (#9825)
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
897a0a23 SPIGOT-5753: Back PotionType by a minecraft registry
255b2aa1 SPIGOT-7080: Add World#locateNearestBiome
ff984826 Remove javadoc.io doc links

CraftBukkit Changes:
71b0135cc SPIGOT-5753: Back PotionType by a minecraft registry
a6bcb8489 SPIGOT-7080: Add World#locateNearestBiome
ad0e57434 SPIGOT-7502: CraftMetaItem - cannot deserialize BlockStateTag
b3efca57a SPIGOT-6400: Use Mockito instead of InvocationHandler
38c599f9d PR-1272: Only allow one entity in CraftItem instead of two
f065271ac SPIGOT-7498: ChunkSnapshot.getBlockEmittedLight() gets 64 blocks upper in Overworld

Spigot Changes:
e0e223fe Remove javadoc.io doc links
2023-10-22 20:12:00 +01:00

41 lines
2.4 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sun, 10 Jul 2022 14:13:22 -0700
Subject: [PATCH] Don't use level random in entity constructors
Paper makes the entity random thread-safe
and constructing an entity off the main thread
should be supported. Some entities (for whatever
reason) use the level's random in some places.
diff --git a/src/main/java/net/minecraft/world/entity/item/ItemEntity.java b/src/main/java/net/minecraft/world/entity/item/ItemEntity.java
index d70abca10e84b86310ce5e4d72eb939331dc00e4..1a06d8c839e94fe2c1920035d606b62e0dc5cfba 100644
--- a/src/main/java/net/minecraft/world/entity/item/ItemEntity.java
+++ b/src/main/java/net/minecraft/world/entity/item/ItemEntity.java
@@ -64,7 +64,12 @@ public class ItemEntity extends Entity implements TraceableEntity {
}
public ItemEntity(Level world, double x, double y, double z, ItemStack stack) {
- this(world, x, y, z, stack, world.random.nextDouble() * 0.2D - 0.1D, 0.2D, world.random.nextDouble() * 0.2D - 0.1D);
+ // Paper start - don't use world random in entity constructor
+ this(EntityType.ITEM, world);
+ this.setPos(x, y, z);
+ this.setDeltaMovement(this.random.nextDouble() * 0.2D - 0.1D, 0.2D, this.random.nextDouble() * 0.2D - 0.1D);
+ this.setItem(stack);
+ // Paper end
}
public ItemEntity(Level world, double x, double y, double z, ItemStack stack, double velocityX, double velocityY, double velocityZ) {
diff --git a/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java b/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
index 57f9bf73ee14bc8811d0192543caf2b02e890ee0..4ce3e69970dd9eb251d0538a2d233ca30e9e5e47 100644
--- a/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
+++ b/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
@@ -36,7 +36,7 @@ public class PrimedTnt extends Entity implements TraceableEntity {
public PrimedTnt(Level world, double x, double y, double z, @Nullable LivingEntity igniter) {
this(EntityType.TNT, world);
this.setPos(x, y, z);
- double d3 = world.random.nextDouble() * 6.2831854820251465D;
+ double d3 = this.random.nextDouble() * 6.2831854820251465D; // Paper - don't use world random in entity constructor
this.setDeltaMovement(-Math.sin(d3) * 0.02D, 0.20000000298023224D, -Math.cos(d3) * 0.02D);
this.setFuse(80);