Files
Purpur/patches/server/0261-Add-toggle-for-RNG-manipulation.patch
granny d05e78bdb1 drop two config options in favor of PurpurExtras impl
dropped options:
- `mobs.snow_golem.drop-pumpkin-when-sheared`
- `mobs.sheep.jeb-shear-random-color`
2024-01-07 16:58:34 -08:00

51 lines
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 a7efbf24ca52d2303323ae2406cfe4beb7a72d4c..8cfba1af2f4ca7be42d997269187466c130de7b3 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -598,7 +598,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
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 88c238e492b1081d1a64a3b6f05d7baa17e5d8c9..dd7f2beabf0edad4143ac2365ac04a22edf1f75e 100644
--- a/src/main/java/net/minecraft/world/entity/animal/Squid.java
+++ b/src/main/java/net/minecraft/world/entity/animal/Squid.java
@@ -44,7 +44,7 @@ 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 453d4b1c1d6b9a1521ce7a2e179dfcec0bf52a3c..c4174f1f3e6993a38cdb3cbd57553af9807a327b 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -204,9 +204,11 @@ 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;