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 cea095aae3f9ba4ed8be88282d48925ad667f0d9..80840cd2d2c74e6778df2cd2082b5318e273ad3a 100644 --- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java +++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java @@ -8,6 +8,8 @@ import it.unimi.dsi.fastutil.objects.Reference2IntMap; import it.unimi.dsi.fastutil.objects.Reference2IntOpenHashMap; import net.minecraft.world.entity.MobCategory; import com.destroystokyo.paper.antixray.ChunkPacketBlockControllerAntiXray.EngineMode; +import java.util.HashMap; +import java.util.Map; import org.bukkit.Bukkit; import org.bukkit.configuration.file.YamlConfiguration; import org.spigotmc.SpigotWorldConfig; @@ -171,6 +173,38 @@ public class PaperWorldConfig { } } + public Map, 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); + + addEntityPerChunkSaveLimitsFromSection(config.getConfigurationSection("world-settings.default.entity-per-chunk-save-limit"), entityPerChunkSaveLimits); + addEntityPerChunkSaveLimitsFromSection(config.getConfigurationSection("world-settings." + worldName + ".entity-per-chunk-save-limit"), entityPerChunkSaveLimits); + } + + private static void addEntityPerChunkSaveLimitsFromSection(final org.bukkit.configuration.ConfigurationSection section, final Map, Integer> limitMap) { + if (section == null) { + return; + } + for (final String key : section.getKeys(false)) { + final int value = section.getInt(key); + final net.minecraft.world.entity.EntityType type = net.minecraft.world.entity.EntityType.byString(key).orElse(null); + if (type == null) { + logError("Invalid entity-per-chunk-save-limit config, '" + key+ "' is not a valid entity type. Correct this in paper.yml."); + continue; + } + if (value >= 0) { + limitMap.put(type, value); + } else { + limitMap.remove(type); + } + } + } + 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 5e25d055665bab4d06a9b641892d4149da01218a..79abd84696ef099f6b12ddeaa6e398f18c53316a 100644 --- a/src/main/java/net/minecraft/world/entity/EntityType.java +++ b/src/main/java/net/minecraft/world/entity/EntityType.java @@ -564,9 +564,20 @@ public class EntityType implements EntityTypeTest { final Spliterator spliterator = entityNbtList.spliterator(); return StreamSupport.stream(new Spliterator() { + final java.util.Map, Integer> loadedEntityCounts = new java.util.HashMap<>(); // Paper public boolean tryAdvance(Consumer 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 edc81a67678bdcb7acb3ae4c8bfa8230792ad7a2..7d00e21ea5f93936b5fea9a9100e1dd6db9526cf 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 { } else { ListTag listTag = new ListTag(); + final java.util.Map, 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);