Files
Purpur/patches/server/0267-Add-toggle-for-RNG-manipulation.patch
granny 991719aa9e Updated Upstream (Paper)
Upstream has released updates that appear to apply and compile correctly

Paper Changes:
PaperMC/Paper@c1ea550 Remove more outdated config settings (#9358)
PaperMC/Paper@3a03739 Add method to get ungenerated chunk from long key (#9254)
PaperMC/Paper@072b78a Add trail ruins structure set seed in spigot config (#9327)
PaperMC/Paper@faf9a65 Disable BukkitMirrorTest
PaperMC/Paper@873533b Add method to remove all active potion effects (#9361)
PaperMC/Paper@275173e Updated Upstream (Bukkit/CraftBukkit)
PaperMC/Paper@976b95c Temp: Pre-init PlayerChunkLoaderData in order to prepopulate the BFS lookup cache because potatos (Closes #9338)
PaperMC/Paper@d6d4c78 Move some Folia API to Paper for easy compat (#9360)
PaperMC/Paper@b1fe756 Revert "Move some Folia API to Paper for easy compat (#9360)"
PaperMC/Paper@1f5bec7 Pull Folia API take two
PaperMC/Paper@3756f5b Properly Cancel Usable Items (#9225)
2023-06-20 15:54:20 -07:00

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3.0 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Encode42 <me@encode42.dev>
Date: Tue, 12 Jul 2022 14:16:10 -0400
Subject: [PATCH] Add toggle for RNG manipulation
Paper patches RNG maniplulation by using a shared (and locked) random source.
This comes with a performance gain, but technical players may prefer the ability to manipulate RNG.
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 196c8b43d096289f02293f8958d591e9738e3826..0be80982b8bdcbb884aeb9a257693f0035928bef 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -615,7 +615,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
this.bb = Entity.INITIAL_AABB;
this.stuckSpeedMultiplier = Vec3.ZERO;
this.nextStep = 1.0F;
- this.random = SHARED_RANDOM; // Paper
+ this.random = world == null || world.purpurConfig.entitySharedRandom ? SHARED_RANDOM : RandomSource.create(); // Paper // Purpur
this.remainingFireTicks = -this.getFireImmuneTicks();
this.fluidHeight = new Object2DoubleArrayMap(2);
this.fluidOnEyes = new HashSet();
diff --git a/src/main/java/net/minecraft/world/entity/animal/Squid.java b/src/main/java/net/minecraft/world/entity/animal/Squid.java
index beef2f6a42eebeaf5761bac841300f780bfdf4f2..41797940d89fec55cb7de4c63eb3ea5cdb4be967 100644
--- a/src/main/java/net/minecraft/world/entity/animal/Squid.java
+++ b/src/main/java/net/minecraft/world/entity/animal/Squid.java
@@ -46,7 +46,7 @@ public class Squid extends WaterAnimal {
public Squid(EntityType<? extends Squid> type, Level world) {
super(type, world);
- //this.random.setSeed((long) this.getId()); // Paper - we set the random to shared, do not clobber the seed
+ if (!world.purpurConfig.entitySharedRandom) this.random.setSeed((long) this.getId()); // Paper - we set the random to shared, do not clobber the seed // Purpur
this.tentacleSpeed = 1.0F / (this.random.nextFloat() + 1.0F) * 0.2F;
}
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index c4a061e88ed7cdfb85e0b97e3d9ae6b1fe2a8bf5..03b9f85261761cb03ebd902ba27e29b9b644d700 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -206,9 +206,11 @@ public class PurpurWorldConfig {
public int entityLifeSpan = 0;
public float entityLeftHandedChance = 0.05f;
+ public boolean entitySharedRandom = true;
private void entitySettings() {
entityLifeSpan = getInt("gameplay-mechanics.entity-lifespan", entityLifeSpan);
entityLeftHandedChance = (float) getDouble("gameplay-mechanics.entity-left-handed-chance", entityLeftHandedChance);
+ entitySharedRandom = getBoolean("settings.entity.shared-random", entitySharedRandom);
}
public boolean infinityWorksWithoutArrows = false;