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c5a10665b8
Spigot still maintains some partial implementation of "tick skipping", a practice in which the MinecraftServer.currentTick field is updated not by an increment of one per actual tick, but instead set to System.currentTimeMillis() / 50. This behaviour means that the tracked tick may "skip" a tick value in case a previous tick took more than the expected 50ms. To compensate for this in important paths, spigot/craftbukkit implements "wall-time". Instead of incrementing/decrementing ticks on block entities/entities by one for each call to their tick() method, they instead increment/decrement important values, like an ItemEntity's age or pickupDelay, by the difference of `currentTick - lastTick`, where `lastTick` is the value of `currentTick` during the last tick() call. These "fixes" however do not play nicely with minecraft's simulation distance as entities/block entities implementing the above behaviour would "catch up" their values when moving from a non-ticking chunk to a ticking one as their `lastTick` value remains stuck on the last tick in a ticking chunk and hence lead to a large "catch up" once ticked again. Paper completely removes the "tick skipping" behaviour (See patch "Further-improve-server-tick-loop"), making the above precautions completely unnecessary, which also rids paper of the previous described incompatibility with non-ticking chunks.
66 lines
3.8 KiB
Diff
66 lines
3.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jake Potrebic <jake.m.potrebic@gmail.com>
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Date: Sun, 20 Mar 2022 22:06:47 -0700
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Subject: [PATCH] Cache resource keys and optimize reference Holder tags set
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TagKeys are always interned, so we can use a reference hash set for them
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diff --git a/src/main/java/net/minecraft/core/Holder.java b/src/main/java/net/minecraft/core/Holder.java
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index d7bbf60ba94ecd85f991a0c5c70c34fdb00ec9d5..4d2231868b786da9071c3dff2c073b478a486e8a 100644
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--- a/src/main/java/net/minecraft/core/Holder.java
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+++ b/src/main/java/net/minecraft/core/Holder.java
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@@ -221,7 +221,7 @@ public interface Holder<T> {
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}
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void bindTags(Collection<TagKey<T>> tags) {
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- this.tags = Set.copyOf(tags);
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+ this.tags = java.util.Collections.unmodifiableSet(new it.unimi.dsi.fastutil.objects.ReferenceOpenHashSet<>(tags)); // Paper
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}
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@Override
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diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBiome.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBiome.java
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index 95b956802f83b583a823fcd24808363775a56842..33d2e89ac40465b0c4633f9c51378b80f7c397a9 100644
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--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBiome.java
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+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBiome.java
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@@ -3,6 +3,7 @@ package org.bukkit.craftbukkit.block;
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import com.google.common.base.Preconditions;
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import net.minecraft.core.Holder;
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import net.minecraft.core.registries.Registries;
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+import net.minecraft.resources.ResourceKey;
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import org.bukkit.Registry;
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import org.bukkit.block.Biome;
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import org.bukkit.craftbukkit.CraftRegistry;
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@@ -27,13 +28,14 @@ public class CraftBiome {
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return CraftBiome.minecraftToBukkit(minecraft.value());
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}
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+ private static final java.util.Map<org.bukkit.block.Biome, ResourceKey<net.minecraft.world.level.biome.Biome>> BIOME_KEY_CACHE = java.util.Collections.synchronizedMap(new java.util.EnumMap<>(Biome.class)); // Paper
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public static net.minecraft.world.level.biome.Biome bukkitToMinecraft(Biome bukkit) {
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if (bukkit == null || bukkit == Biome.CUSTOM) {
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return null;
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}
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return CraftRegistry.getMinecraftRegistry(Registries.BIOME)
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- .getOptional(CraftNamespacedKey.toMinecraft(bukkit.getKey())).orElseThrow();
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+ .getOptional(BIOME_KEY_CACHE.computeIfAbsent(bukkit, b -> ResourceKey.create(Registries.BIOME, CraftNamespacedKey.toMinecraft(b.getKey())))).orElseThrow();
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}
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public static Holder<net.minecraft.world.level.biome.Biome> bukkitToMinecraftHolder(Biome bukkit) {
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diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityType.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityType.java
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index fd1aaf8e18d6e3425639b60ce21c5aaf36e0b42a..266b616419a47f518a43b990cc7cbb4516beda03 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityType.java
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+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntityType.java
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@@ -24,11 +24,11 @@ public class CraftEntityType {
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return bukkit;
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}
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+ private static final java.util.Map<EntityType, net.minecraft.resources.ResourceKey<net.minecraft.world.entity.EntityType<?>>> KEY_CACHE = java.util.Collections.synchronizedMap(new java.util.EnumMap<>(EntityType.class)); // Paper
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public static net.minecraft.world.entity.EntityType<?> bukkitToMinecraft(EntityType bukkit) {
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Preconditions.checkArgument(bukkit != null);
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-
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return CraftRegistry.getMinecraftRegistry(Registries.ENTITY_TYPE)
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- .getOptional(CraftNamespacedKey.toMinecraft(bukkit.getKey())).orElseThrow();
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+ .getOptional(KEY_CACHE.computeIfAbsent(bukkit, type -> net.minecraft.resources.ResourceKey.create(Registries.ENTITY_TYPE, CraftNamespacedKey.toMinecraft(type.getKey())))).orElseThrow();
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}
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public static String bukkitToString(EntityType bukkit) {
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