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da9d110d5b
This patch does not appear to be doing anything useful, and may hide errors. Currently, the save logic does not run through this path either so it did not do anything. Additionally, properly implement support for handling RegionFileSizeException in Moonrise.
113 lines
4.7 KiB
Diff
113 lines
4.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Tue, 22 Mar 2016 00:33:47 -0400
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Subject: [PATCH] Use a Shared Random for Entities
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Reduces memory usage and provides ensures more randomness, Especially since a lot of garbage entity objects get created.
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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 10195d04c9ca9e5f79e9c423fba5dc33fa538f3a..30abcdfd4c18781563bed93642778424b4f9a417 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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@@ -184,6 +184,79 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
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return tag.contains("Bukkit.updateLevel") && tag.getInt("Bukkit.updateLevel") >= level;
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}
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+ // Paper start - Share random for entities to make them more random
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+ public static RandomSource SHARED_RANDOM = new RandomRandomSource();
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+ private static final class RandomRandomSource extends java.util.Random implements net.minecraft.world.level.levelgen.BitRandomSource {
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+ private boolean locked = false;
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+
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+ @Override
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+ public synchronized void setSeed(long seed) {
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+ if (locked) {
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+ LOGGER.error("Ignoring setSeed on Entity.SHARED_RANDOM", new Throwable());
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+ } else {
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+ super.setSeed(seed);
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+ locked = true;
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+ }
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+ }
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+
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+ @Override
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+ public RandomSource fork() {
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+ return new net.minecraft.world.level.levelgen.LegacyRandomSource(this.nextLong());
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+ }
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+
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+ @Override
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+ public net.minecraft.world.level.levelgen.PositionalRandomFactory forkPositional() {
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+ return new net.minecraft.world.level.levelgen.LegacyRandomSource.LegacyPositionalRandomFactory(this.nextLong());
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+ }
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+
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+ // these below are added to fix reobf issues that I don't wanna deal with right now
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+ @Override
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+ public int next(int bits) {
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+ return super.next(bits);
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+ }
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+
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+ @Override
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+ public int nextInt(int origin, int bound) {
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+ return net.minecraft.world.level.levelgen.BitRandomSource.super.nextInt(origin, bound);
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+ }
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+
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+ @Override
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+ public long nextLong() {
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+ return net.minecraft.world.level.levelgen.BitRandomSource.super.nextLong();
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+ }
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+
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+ @Override
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+ public int nextInt() {
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+ return net.minecraft.world.level.levelgen.BitRandomSource.super.nextInt();
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+ }
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+
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+ @Override
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+ public int nextInt(int bound) {
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+ return net.minecraft.world.level.levelgen.BitRandomSource.super.nextInt(bound);
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+ }
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+
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+ @Override
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+ public boolean nextBoolean() {
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+ return net.minecraft.world.level.levelgen.BitRandomSource.super.nextBoolean();
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+ }
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+
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+ @Override
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+ public float nextFloat() {
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+ return net.minecraft.world.level.levelgen.BitRandomSource.super.nextFloat();
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+ }
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+
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+ @Override
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+ public double nextDouble() {
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+ return net.minecraft.world.level.levelgen.BitRandomSource.super.nextDouble();
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+ }
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+
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+ @Override
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+ public double nextGaussian() {
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+ return super.nextGaussian();
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+ }
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+ }
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+ // Paper end - Share random for entities to make them more random
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+
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private CraftEntity bukkitEntity;
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public CraftEntity getBukkitEntity() {
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@@ -374,7 +447,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
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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 = RandomSource.create();
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+ this.random = SHARED_RANDOM; // Paper - Share random for entities to make them more random
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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 bcccd7d808a3bef4acafe2e6b484ba0ed8059507..f9fdc600dc680c55219fcbf9bc8f151a733a093c 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 AgeableWaterCreature {
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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());
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+ //this.random.setSeed((long)this.getId()); // Paper - Share random for entities to make them more random
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this.tentacleSpeed = 1.0F / (this.random.nextFloat() + 1.0F) * 0.2F;
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}
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