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Paper/Spigot-Server-Patches/0007-Store-reference-to-cur...

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From 0fb24c3112ee195e65b308f168e3bca44fa4edab Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 4 Jul 2018 02:10:36 -0400
Subject: [PATCH] Store reference to current Chunk for Entity and Block
Entities
This enables us a fast reference to the entities current chunk instead
of having to look it up by hashmap lookups.
diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index a263f60d49..8627365923 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -29,7 +29,7 @@ public class Chunk implements IChunkAccess {
private final ChunkSection[] sections;
private BiomeStorage d;
private final Map<BlockPosition, NBTTagCompound> e;
- public boolean loaded;
+ public boolean loaded; public boolean isLoaded() { return loaded; } // Paper - OBFHELPER
public final World world;
public final Map<HeightMap.Type, HeightMap> heightMap;
private final ChunkConverter i;
@@ -55,11 +55,36 @@ public class Chunk implements IChunkAccess {
this(world, chunkcoordintpair, biomestorage, ChunkConverter.a, TickListEmpty.b(), TickListEmpty.b(), 0L, (ChunkSection[]) null, (Consumer) null);
}
+ // Paper start
+ private class TileEntityHashMap extends java.util.HashMap<BlockPosition, TileEntity> {
+ @Override
+ public TileEntity put(BlockPosition key, TileEntity value) {
+ TileEntity replaced = super.put(key, value);
+ if (replaced != null) {
+ replaced.setCurrentChunk(null);
+ }
+ if (value != null) {
+ value.setCurrentChunk(Chunk.this);
+ }
+ return replaced;
+ }
+
+ @Override
+ public TileEntity remove(Object key) {
+ TileEntity removed = super.remove(key);
+ if (removed != null) {
+ removed.setCurrentChunk(null);
+ }
+ return removed;
+ }
+ }
+ // Paper end
+
public Chunk(World world, ChunkCoordIntPair chunkcoordintpair, BiomeStorage biomestorage, ChunkConverter chunkconverter, TickList<Block> ticklist, TickList<FluidType> ticklist1, long i, @Nullable ChunkSection[] achunksection, @Nullable Consumer<Chunk> consumer) {
this.sections = new ChunkSection[16];
this.e = Maps.newHashMap();
this.heightMap = Maps.newEnumMap(HeightMap.Type.class);
- this.tileEntities = Maps.newHashMap();
+ this.tileEntities = new TileEntityHashMap(); // Paper
this.l = Maps.newHashMap();
this.m = Maps.newHashMap();
this.n = new ShortList[16];
@@ -366,6 +391,7 @@ public class Chunk implements IChunkAccess {
}
entity.inChunk = true;
+ entity.setCurrentChunk(this); // Paper
entity.chunkX = this.loc.x;
entity.chunkY = k;
entity.chunkZ = this.loc.z;
@@ -378,6 +404,7 @@ public class Chunk implements IChunkAccess {
((HeightMap) this.heightMap.get(heightmap_type)).a(along);
}
+ public void removeEntity(Entity entity) { this.b(entity); } // Paper - OBFHELPER
public void b(Entity entity) {
this.a(entity, entity.chunkY);
}
@@ -390,8 +417,12 @@ public class Chunk implements IChunkAccess {
if (i >= this.entitySlices.length) {
i = this.entitySlices.length - 1;
}
-
- this.entitySlices[i].remove(entity);
+ // Paper start
+ if (entity.currentChunk != null && entity.currentChunk.get() == this) entity.setCurrentChunk(null);
+ if (!this.entitySlices[i].remove(entity)) {
+ return;
+ }
+ // Paper end
}
@Override
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index a8ea70b36b..3a969d92e0 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -134,7 +134,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
private static final DataWatcherObject<Boolean> aB = DataWatcher.a(Entity.class, DataWatcherRegistry.i);
private static final DataWatcherObject<Boolean> aC = DataWatcher.a(Entity.class, DataWatcherRegistry.i);
protected static final DataWatcherObject<EntityPose> POSE = DataWatcher.a(Entity.class, DataWatcherRegistry.s);
- public boolean inChunk;
+ public boolean inChunk; public boolean isAddedToChunk() { return inChunk; } // Paper - OBFHELPER
public int chunkX; public int getChunkX() { return chunkX; } // Paper - OBFHELPER
public int chunkY; public int getChunkY() { return chunkY; } // Paper - OBFHELPER
public int chunkZ; public int getChunkZ() { return chunkZ; } // Paper - OBFHELPER
@@ -1709,6 +1709,39 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
}
// Paper start
+ java.lang.ref.WeakReference<Chunk> currentChunk = null;
+
+ public void setCurrentChunk(Chunk chunk) {
+ this.currentChunk = chunk != null ? new java.lang.ref.WeakReference<>(chunk) : null;
+ }
+ /**
+ * Returns the entities current registered chunk. If the entity is not added to a chunk yet, it will return null
+ */
+ public Chunk getCurrentChunk() {
+ final Chunk chunk = currentChunk != null ? currentChunk.get() : null;
+ return chunk != null && chunk.isLoaded() ? chunk : (isAddedToChunk() ? world.getChunkIfLoaded(getChunkX(), getChunkZ()) : null);
+ }
+ /**
+ * Returns the chunk at the location, using the entities local cache if avail
+ * Will only return null if the location specified is not loaded
+ */
+ public Chunk getCurrentChunkAt(int x, int z) {
+ if (getChunkX() == x && getChunkZ() == z) {
+ Chunk chunk = getCurrentChunk();
+ if (chunk != null) {
+ return chunk;
+ }
+ }
+ return world.getChunkIfLoaded(x, z);
+ }
+ /**
+ * Returns the chunk at the entities current location, using the entities local cache if avail
+ * Will only return null if the location specified is not loaded
+ */
+ public Chunk getChunkAtLocation() {
+ return getCurrentChunkAt((int)Math.floor(locX) >> 4, (int)Math.floor(locZ) >> 4);
+ }
+
private MinecraftKey entityKey;
private String entityKeyString;
diff --git a/src/main/java/net/minecraft/server/TileEntity.java b/src/main/java/net/minecraft/server/TileEntity.java
index 9071bb7ece..820180ab3f 100644
--- a/src/main/java/net/minecraft/server/TileEntity.java
+++ b/src/main/java/net/minecraft/server/TileEntity.java
@@ -51,6 +51,15 @@ public abstract class TileEntity implements KeyedObject { // Paper
getMinecraftKey(); // Try to load if it doesn't exists.
return tileEntityKeyString;
}
+
+ private java.lang.ref.WeakReference<Chunk> currentChunk = null;
+ public Chunk getCurrentChunk() {
+ final Chunk chunk = currentChunk != null ? currentChunk.get() : null;
+ return chunk != null && chunk.isLoaded() ? chunk : null;
+ }
+ public void setCurrentChunk(Chunk chunk) {
+ this.currentChunk = chunk != null ? new java.lang.ref.WeakReference<>(chunk) : null;
+ }
// Paper end
@Nullable
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
index 63ecbcd47a..c82c213260 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
@@ -138,6 +138,7 @@ import net.minecraft.server.EntityZombieVillager;
import net.minecraft.server.EnumChatFormat;
import net.minecraft.server.IChatBaseComponent;
import net.minecraft.server.NBTTagCompound;
+import org.bukkit.Chunk; // Paper
import org.bukkit.EntityEffect;
import org.bukkit.Location;
import org.bukkit.Server;
@@ -179,6 +180,12 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
this.entity = entity;
}
+ @Override
+ public Chunk getChunk() {
+ net.minecraft.server.Chunk currentChunk = entity.getCurrentChunk();
+ return currentChunk != null ? currentChunk.bukkitChunk : getLocation().getChunk();
+ }
+
public static CraftEntity getEntity(CraftServer server, Entity entity) {
/**
* Order is *EXTREMELY* important -- keep it right! =D
--
2.25.0.windows.1
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