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Paper/patches/server/0708-Optimize-Biome-Mob-Lookups-for-Mob-Spawning.patch

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2021-06-15 07:44:37 +02:00
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 12 Sep 2018 21:47:01 -0400
Subject: [PATCH] Optimize Biome Mob Lookups for Mob Spawning
Uses an EnumMap as well as a Set paired List for O(1) contains calls.
diff --git a/src/main/java/net/minecraft/world/level/biome/MobSpawnSettings.java b/src/main/java/net/minecraft/world/level/biome/MobSpawnSettings.java
index 4e06bb1fbda33e79044ac54758b559f7436882a7..86528ff031014e788d72a8bf7c1c9443512096bb 100644
--- a/src/main/java/net/minecraft/world/level/biome/MobSpawnSettings.java
+++ b/src/main/java/net/minecraft/world/level/biome/MobSpawnSettings.java
@@ -70,11 +70,43 @@ public class MobSpawnSettings {
}
public static class Builder {
- private final Map<MobCategory, List<MobSpawnSettings.SpawnerData>> spawners = Stream.of(MobCategory.values()).collect(ImmutableMap.toImmutableMap((mobCategory) -> {
+ // Paper start - keep track of data in a pair set to give O(1) contains calls - we have to hook removals incase plugins mess with it
+ public static class MobList extends java.util.ArrayList<MobSpawnSettings.SpawnerData> {
+ java.util.Set<MobSpawnSettings.SpawnerData> biomes = new java.util.HashSet<>();
+
+ @Override
+ public boolean contains(Object o) {
+ return biomes.contains(o);
+ }
+
+ @Override
+ public boolean add(MobSpawnSettings.SpawnerData BiomeSettingsMobs) {
+ biomes.add(BiomeSettingsMobs);
+ return super.add(BiomeSettingsMobs);
+ }
+
+ @Override
+ public MobSpawnSettings.SpawnerData remove(int index) {
+ MobSpawnSettings.SpawnerData removed = super.remove(index);
+ if (removed != null) {
+ biomes.remove(removed);
+ }
+ return removed;
+ }
+
+ @Override
+ public void clear() {
+ biomes.clear();
+ super.clear();
+ }
+ }
+ // use toImmutableEnumMap collector
+ private final Map<MobCategory, List<MobSpawnSettings.SpawnerData>> spawners = (Map) Stream.of(MobCategory.values()).collect(Maps.toImmutableEnumMap((mobCategory) -> {
return mobCategory;
}, (mobCategory) -> {
- return Lists.newArrayList();
+ return new MobList(); // Use MobList instead of ArrayList
}));
+ // Paper end
private final Map<EntityType<?>, MobSpawnSettings.MobSpawnCost> mobSpawnCosts = Maps.newLinkedHashMap();
private float creatureGenerationProbability = 0.1F;
private boolean playerCanSpawn;