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https://github.com/PurpurMC/Purpur.git
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51 lines
3.0 KiB
Diff
51 lines
3.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Encode42 <me@encode42.dev>
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Date: Tue, 12 Jul 2022 14:16:10 -0400
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Subject: [PATCH] Add toggle for RNG manipulation
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Paper patches RNG maniplulation by using a shared (and locked) random source.
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This comes with a performance gain, but technical players may prefer the ability to manipulate RNG.
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diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
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index 23280c8183285e3570d0d08b6af7fa1d03a57d35..3a5ca6953a28c13b2f6ba0f38d7fa3a46df7947b 100644
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--- a/src/main/java/net/minecraft/world/entity/Entity.java
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+++ b/src/main/java/net/minecraft/world/entity/Entity.java
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@@ -542,7 +542,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
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this.bb = Entity.INITIAL_AABB;
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this.stuckSpeedMultiplier = Vec3.ZERO;
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this.nextStep = 1.0F;
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- this.random = SHARED_RANDOM; // Paper
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+ this.random = world == null || world.purpurConfig.entitySharedRandom ? SHARED_RANDOM : RandomSource.create(); // Paper // Purpur
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this.remainingFireTicks = -this.getFireImmuneTicks();
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this.fluidHeight = new Object2DoubleArrayMap(2);
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this.fluidOnEyes = new HashSet();
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diff --git a/src/main/java/net/minecraft/world/entity/animal/Squid.java b/src/main/java/net/minecraft/world/entity/animal/Squid.java
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index beef2f6a42eebeaf5761bac841300f780bfdf4f2..41797940d89fec55cb7de4c63eb3ea5cdb4be967 100644
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--- a/src/main/java/net/minecraft/world/entity/animal/Squid.java
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+++ b/src/main/java/net/minecraft/world/entity/animal/Squid.java
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@@ -46,7 +46,7 @@ public class Squid extends WaterAnimal {
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public Squid(EntityType<? extends Squid> type, Level world) {
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super(type, world);
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- //this.random.setSeed((long) this.getId()); // Paper - we set the random to shared, do not clobber the seed
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+ if (!world.purpurConfig.entitySharedRandom) this.random.setSeed((long) this.getId()); // Paper - we set the random to shared, do not clobber the seed // Purpur
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this.tentacleSpeed = 1.0F / (this.random.nextFloat() + 1.0F) * 0.2F;
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}
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diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
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index ee7de1ff4f672562f371630c284c9eecda5a9d94..829c1062efed4429964c8f4ef9da977c0961aa44 100644
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--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
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+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
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@@ -210,9 +210,11 @@ public class PurpurWorldConfig {
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public int entityLifeSpan = 0;
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public float entityLeftHandedChance = 0.05f;
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+ public boolean entitySharedRandom = true;
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private void entitySettings() {
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entityLifeSpan = getInt("gameplay-mechanics.entity-lifespan", entityLifeSpan);
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entityLeftHandedChance = (float) getDouble("gameplay-mechanics.entity-left-handed-chance", entityLeftHandedChance);
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+ entitySharedRandom = getBoolean("settings.entity.shared-random", entitySharedRandom);
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}
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public boolean infinityWorksWithoutArrows = false;
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