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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/ca/spottedleaf/moonrise/patches/chunk_system/level/entity/ChunkEntitySlices.java b/src/main/java/ca/spottedleaf/moonrise/patches/chunk_system/level/entity/ChunkEntitySlices.java
index 5ed6599d1f9a2edf8c904f3602b06d26d857600c..b3c993a790fc3fab6a408c731deb297f74c959ce 100644
--- a/src/main/java/ca/spottedleaf/moonrise/patches/chunk_system/level/entity/ChunkEntitySlices.java
+++ b/src/main/java/ca/spottedleaf/moonrise/patches/chunk_system/level/entity/ChunkEntitySlices.java
@@ -104,7 +104,18 @@ public final class ChunkEntitySlices {
}
final ListTag entitiesTag = new ListTag();
+ final java.util.Map<net.minecraft.world.entity.EntityType<?>, Integer> savedEntityCounts = new java.util.HashMap<>(); // Paper - Entity load/save limit per chunk
for (final Entity entity : PlatformHooks.get().modifySavedEntities(world, chunkPos.x, chunkPos.z, entities)) {
+ // Paper start - Entity load/save limit per chunk
+ final EntityType<?> entityType = entity.getType();
+ final int saveLimit = world.paperConfig().chunks.entityPerChunkSaveLimit.getOrDefault(entityType, -1);
+ if (saveLimit > -1) {
+ if (savedEntityCounts.getOrDefault(entityType, 0) >= saveLimit) {
+ continue;
+ }
+ savedEntityCounts.merge(entityType, 1, Integer::sum);
+ }
+ // Paper end - Entity load/save limit per chunk
CompoundTag compoundTag = new CompoundTag();
if (entity.save(compoundTag)) {
entitiesTag.add(compoundTag);
diff --git a/src/main/java/net/minecraft/world/entity/EntityType.java b/src/main/java/net/minecraft/world/entity/EntityType.java
index 629c1316920ad4c111fff489f8c3ea0ed39d0099..c8c2394558952d7ca57d29874485251b8f2b3400 100644
--- a/src/main/java/net/minecraft/world/entity/EntityType.java
+++ b/src/main/java/net/minecraft/world/entity/EntityType.java
@@ -706,9 +706,20 @@ public class EntityType<T extends Entity> implements FeatureElement, EntityTypeT
final Spliterator<? extends Tag> spliterator = entityNbtList.spliterator();
return StreamSupport.stream(new Spliterator<Entity>() {
+ final java.util.Map<EntityType<?>, Integer> loadedEntityCounts = new java.util.HashMap<>(); // Paper - Entity load/save limit per chunk
public boolean tryAdvance(Consumer<? super Entity> consumer) {
return spliterator.tryAdvance((nbtbase) -> {
EntityType.loadEntityRecursive((CompoundTag) nbtbase, world, reason, (entity) -> {
+ // Paper start - Entity load/save limit per chunk
+ final EntityType<?> entityType = entity.getType();
+ final int saveLimit = world.paperConfig().chunks.entityPerChunkSaveLimit.getOrDefault(entityType, -1);
+ if (saveLimit > -1) {
+ if (this.loadedEntityCounts.getOrDefault(entityType, 0) >= saveLimit) {
+ return null;
+ }
+ this.loadedEntityCounts.merge(entityType, 1, Integer::sum);
+ }
+ // Paper end - Entity load/save limit per chunk
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 16ca1c8672e5f0a27f8a30498c754a81cdec5191..356d010506fd21f3c752e4aa86c46c1106fdde3b 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
@@ -93,7 +93,18 @@ 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 - Entity load/save limit per chunk
dataList.getEntities().forEach(entity -> {
+ // Paper start - Entity load/save limit per chunk
+ final EntityType<?> entityType = entity.getType();
+ final int saveLimit = this.level.paperConfig().chunks.entityPerChunkSaveLimit.getOrDefault(entityType, -1);
+ if (saveLimit > -1) {
+ if (savedEntityCounts.getOrDefault(entityType, 0) >= saveLimit) {
+ return;
+ }
+ savedEntityCounts.merge(entityType, 1, Integer::sum);
+ }
+ // Paper end - Entity load/save limit per chunk
CompoundTag compoundTagx = new CompoundTag();
if (entity.save(compoundTagx)) {
listTag.add(compoundTagx);
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