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From a1855af5bfbd26f05e23c83c4c1c8accd9b8aa08 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/server/BiomeBase.java b/src/main/java/net/minecraft/server/BiomeBase.java
index 65daa76bc1..a86ece8344 100644
--- a/src/main/java/net/minecraft/server/BiomeBase.java
+++ b/src/main/java/net/minecraft/server/BiomeBase.java
@@ -39,7 +39,7 @@ public abstract class BiomeBase {
protected final Map<WorldGenStage.Decoration, List<WorldGenFeatureConfigured<?>>> r = Maps.newHashMap();
protected final List<WorldGenFeatureConfigured<?>> s = Lists.newArrayList();
protected final Map<StructureGenerator<?>, WorldGenFeatureConfiguration> t = Maps.newHashMap();
- private final Map<EnumCreatureType, List<BiomeBase.BiomeMeta>> u = Maps.newHashMap();
+ private final java.util.EnumMap<EnumCreatureType, List<BiomeBase.BiomeMeta>> u = Maps.newEnumMap(EnumCreatureType.class); // Paper
private final ThreadLocal<Long2FloatLinkedOpenHashMap> v = ThreadLocal.withInitial(() -> {
return (Long2FloatLinkedOpenHashMap) SystemUtils.a(() -> {
Long2FloatLinkedOpenHashMap long2floatlinkedopenhashmap = new Long2FloatLinkedOpenHashMap(1024, 0.25F) {
@@ -96,7 +96,7 @@ public abstract class BiomeBase {
for (j = 0; j < i; ++j) {
EnumCreatureType enumcreaturetype = aenumcreaturetype[j];
- this.u.put(enumcreaturetype, Lists.newArrayList());
+ this.u.put(enumcreaturetype, new MobList()); // Paper
}
} else {
@@ -324,6 +324,38 @@ public abstract class BiomeBase {
return this.m;
}
+ // 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<BiomeMeta> {
+ java.util.Set<BiomeMeta> biomes = new java.util.HashSet<>();
+
+ @Override
+ public boolean contains(Object o) {
+ return biomes.contains(o);
+ }
+
+ @Override
+ public boolean add(BiomeMeta biomeMeta) {
+ biomes.add(biomeMeta);
+ return super.add(biomeMeta);
+ }
+
+ @Override
+ public BiomeMeta remove(int index) {
+ BiomeMeta removed = super.remove(index);
+ if (removed != null) {
+ biomes.remove(removed);
+ }
+ return removed;
+ }
+
+ @Override
+ public void clear() {
+ biomes.clear();
+ super.clear();
+ }
+ }
+ // Paper end
+
public static class a {
@Nullable
--
2.22.0
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