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/net/minecraft/world/entity/EntityType.java b/src/main/java/net/minecraft/world/entity/EntityType.java index 69bdf3f2ee731e59e8d454816a9ca72cb49c0fe0..09e8445a3f8c6b3ebc852a75a9a25b41a51ba659 100644 --- a/src/main/java/net/minecraft/world/entity/EntityType.java +++ b/src/main/java/net/minecraft/world/entity/EntityType.java @@ -640,9 +640,20 @@ public class EntityType implements FeatureElement, EntityTypeT final Spliterator spliterator = entityNbtList.spliterator(); return StreamSupport.stream(new Spliterator() { + final java.util.Map, Integer> loadedEntityCounts = new java.util.HashMap<>(); // Paper - Entity load/save limit per chunk public boolean tryAdvance(Consumer consumer) { return spliterator.tryAdvance((nbtbase) -> { EntityType.loadEntityRecursive((CompoundTag) nbtbase, world, (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 e8f8e1f2128df81705a88cee4b9a7760fb123750..995fbfa225efe40274c20608b9b30b8afa847698 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 @@ -109,7 +109,18 @@ public class EntityStorage implements EntityPersistentStorage { } ListTag listTag = new ListTag(); + final java.util.Map, Integer> savedEntityCounts = new java.util.HashMap<>(); // Paper - Entity load/save limit per chunk entities.forEach((entity) -> { // diff here: use entities parameter + // Paper start - Entity load/save limit per chunk + final EntityType entityType = entity.getType(); + final int saveLimit = 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 compoundTag = new CompoundTag(); if (entity.save(compoundTag)) { listTag.add(compoundTag);