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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/server/BiomeBase.java b/src/main/java/net/minecraft/server/BiomeBase.java
index ae0ac8d383ca11a683465d8c83a8b8a66e567079..30aeb45d63394b7d91c2dd7b92cfc9cefa3c088c 100644
--- a/src/main/java/net/minecraft/server/BiomeBase.java
+++ b/src/main/java/net/minecraft/server/BiomeBase.java
@@ -119,7 +119,7 @@ public class BiomeBase {
this.r.put(worldgenstage_decoration, Lists.newArrayList());
}
- this.v = Maps.newHashMap();
+ this.v = Maps.newEnumMap(EnumCreatureType.class); // Paper
EnumCreatureType[] aenumcreaturetype = EnumCreatureType.values();
i = aenumcreaturetype.length;
@@ -127,7 +127,7 @@ public class BiomeBase {
for (j = 0; j < i; ++j) {
EnumCreatureType enumcreaturetype = aenumcreaturetype[j];
- this.v.put(enumcreaturetype, Lists.newArrayList());
+ this.v.put(enumcreaturetype, new MobList()); // Paper
}
} else {
@@ -150,7 +150,7 @@ public class BiomeBase {
this.u = (Map) list.stream().collect(Collectors.toMap((structurefeature) -> {
return structurefeature.b;
}, Function.identity()));
- this.v = map2;
+ this.v = Maps.newEnumMap(EnumCreatureType.class); this.v.putAll(map2); // Paper
this.x = list1;
this.l = (String) optional.orElse(null); // Paper - decompile fix
Stream stream = map1.values().stream().flatMap(Collection::stream).filter((worldgenfeatureconfigured) -> {
@@ -433,6 +433,38 @@ public class BiomeBase {
return this.l;
}
+ // 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 d {
public static final Codec<BiomeBase.d> a = RecordCodecBuilder.create((instance) -> {
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