Paper/patches/server/0649-Entity-load-save-limit-per-chunk.patch
2021-07-25 07:00:54 +00:00

99 lines
5.7 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
Date: Wed, 18 Nov 2020 20:52:25 -0800
Subject: [PATCH] Entity load/save limit per chunk
Adds a config option to limit the number of entities saved and loaded
to a chunk. The default values of -1 disable the limit. Although
defaults are only included for certain entites, this allows setting
limits for any entity type.
diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index acd61a9033fdfb91e29a5fa6a10b8983ed94baa5..3e9f288ee310c7c79664e69b99698fdd179ae77f 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -1,9 +1,12 @@
package com.destroystokyo.paper;
import java.util.Arrays;
+import java.util.HashMap;
import java.util.List;
+import java.util.Map;
import java.util.stream.Collectors;
import net.minecraft.world.Difficulty;
+import net.minecraft.world.entity.EntityType;
import net.minecraft.world.entity.monster.Vindicator;
import net.minecraft.world.entity.monster.Zombie;
import com.destroystokyo.paper.antixray.ChunkPacketBlockControllerAntiXray.EngineMode;
@@ -123,6 +126,22 @@ public class PaperWorldConfig {
);
}
+ public Map<EntityType<?>, Integer> entityPerChunkSaveLimits = new HashMap<>();
+ private void entityPerChunkSaveLimits() {
+ getInt("entity-per-chunk-save-limit.experience_orb", -1);
+ getInt("entity-per-chunk-save-limit.snowball", -1);
+ getInt("entity-per-chunk-save-limit.ender_pearl", -1);
+ getInt("entity-per-chunk-save-limit.arrow", -1);
+ getInt("entity-per-chunk-save-limit.fireball", -1);
+ getInt("entity-per-chunk-save-limit.small_fireball", -1);
+ EntityType.getEntityNameList().forEach(name -> {
+ final EntityType<?> type = EntityType.byString(name.getPath()).orElseThrow(() -> new IllegalStateException("Unknown Entity Type: " + name.toString()));
+ final String path = ".entity-per-chunk-save-limit." + name.getPath();
+ final int value = config.getInt("world-settings." + worldName + path, config.getInt("world-settings.default" + path, -1)); // get without setting defaults
+ if (value != -1) entityPerChunkSaveLimits.put(type, value);
+ });
+ }
+
public short keepLoadedRange;
private void keepLoadedRange() {
keepLoadedRange = (short) (getInt("keep-spawn-loaded-range", Math.min(spigotConfig.viewDistance, 10)) * 16);
diff --git a/src/main/java/net/minecraft/world/entity/EntityType.java b/src/main/java/net/minecraft/world/entity/EntityType.java
index b50bf044a3cb05b811fd06796a351e6b15b352ad..ac99265aacd4a28490705e3079ed04023fb1c54a 100644
--- a/src/main/java/net/minecraft/world/entity/EntityType.java
+++ b/src/main/java/net/minecraft/world/entity/EntityType.java
@@ -560,9 +560,20 @@ public class EntityType<T extends Entity> implements EntityTypeTest<Entity, T> {
final Spliterator<? extends net.minecraft.nbt.Tag> spliterator = entityNbtList.spliterator();
return StreamSupport.stream(new Spliterator<Entity>() {
+ final java.util.Map<EntityType<?>, Integer> loadedEntityCounts = new java.util.HashMap<>(); // Paper
public boolean tryAdvance(Consumer<? super Entity> consumer) {
return spliterator.tryAdvance((nbtbase) -> {
EntityType.loadEntityRecursive((CompoundTag) nbtbase, world, (entity) -> {
+ // Paper start
+ final EntityType<?> entityType = entity.getType();
+ final int saveLimit = world.paperConfig.entityPerChunkSaveLimits.getOrDefault(entityType, -1);
+ if (saveLimit > -1) {
+ if (this.loadedEntityCounts.getOrDefault(entityType, 0) >= saveLimit) {
+ return null;
+ }
+ this.loadedEntityCounts.merge(entityType, 1, Integer::sum);
+ }
+ // Paper end
consumer.accept(entity);
return entity;
});
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/EntityStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/EntityStorage.java
index 9b0b3affdbdf831f0d3d61c59bdb99555bc0bed7..396c34c0866bf395b4d86361d96fe103c5d9ae7e 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/EntityStorage.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/EntityStorage.java
@@ -90,7 +90,18 @@ public class EntityStorage implements EntityPersistentStorage<Entity> {
} else {
ListTag listTag = new ListTag();
+ final java.util.Map<net.minecraft.world.entity.EntityType<?>, Integer> savedEntityCounts = new java.util.HashMap<>(); // Paper
dataList.getEntities().forEach((entity) -> {
+ // Paper start
+ final EntityType<?> entityType = entity.getType();
+ final int saveLimit = this.level.paperConfig.entityPerChunkSaveLimits.getOrDefault(entityType, -1);
+ if (saveLimit > -1) {
+ if (savedEntityCounts.getOrDefault(entityType, 0) >= saveLimit) {
+ return;
+ }
+ savedEntityCounts.merge(entityType, 1, Integer::sum);
+ }
+ // Paper end
CompoundTag compoundTag = new CompoundTag();
if (entity.save(compoundTag)) {
listTag.add(compoundTag);