From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Thu, 16 Apr 2020 16:13:59 -0700
Subject: [PATCH] Optimize ChunkProviderServer's chunk level checking helper
 methods

These can be hot functions (i.e entity ticking and block ticking),
so inline where possible, and avoid the abstraction of the
Either class.

diff --git a/src/main/java/net/minecraft/server/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java
index e31ebda893112b932ee314fc72263fc163ed04ba..cc91266704043b46653bdd512637d001677ddc76 100644
--- a/src/main/java/net/minecraft/server/ChunkProviderServer.java
+++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java
@@ -619,21 +619,29 @@ public class ChunkProviderServer extends IChunkProvider {
 
     public final boolean isInEntityTickingChunk(Entity entity) { return this.a(entity); } // Paper - OBFHELPER
     @Override public boolean a(Entity entity) {
-        long i = ChunkCoordIntPair.pair(MathHelper.floor(entity.locX()) >> 4, MathHelper.floor(entity.locZ()) >> 4);
-
-        return this.a(i, (Function<PlayerChunk, CompletableFuture<Either<Chunk, PlayerChunk.Failure>>>) PlayerChunk::b); // CraftBukkit - decompile error
+        // Paper start - optimize is ticking ready type functions
+        // entity ticking
+        PlayerChunk playerChunk = this.getChunk(MCUtil.getCoordinateKey(entity));
+        return playerChunk != null && playerChunk.isEntityTickingReady();
+        // Paper end - optimize is ticking ready type functions
     }
 
     public final boolean isEntityTickingChunk(ChunkCoordIntPair chunkcoordintpair) { return this.a(chunkcoordintpair); } // Paper - OBFHELPER
     @Override public boolean a(ChunkCoordIntPair chunkcoordintpair) {
-        return this.a(chunkcoordintpair.pair(), (Function<PlayerChunk, CompletableFuture<Either<Chunk, PlayerChunk.Failure>>>) PlayerChunk::b); // CraftBukkit - decompile error
+        // Paper start - optimize is ticking ready type functions
+        // is entity ticking ready
+        PlayerChunk playerChunk = this.getChunk(MCUtil.getCoordinateKey(chunkcoordintpair));
+        return playerChunk != null && playerChunk.isEntityTickingReady();
+        // Paper end - optimize is ticking ready type functions
     }
 
     @Override
     public boolean a(BlockPosition blockposition) {
-        long i = ChunkCoordIntPair.pair(blockposition.getX() >> 4, blockposition.getZ() >> 4);
-
-        return this.a(i, (Function<PlayerChunk, CompletableFuture<Either<Chunk, PlayerChunk.Failure>>>) PlayerChunk::a); // CraftBukkit - decompile error
+        // Paper start - optimize is ticking ready type functions
+        // is ticking ready
+        PlayerChunk playerChunk = this.getChunk(MCUtil.getCoordinateKey(blockposition));
+        return playerChunk != null && playerChunk.isTickingReady();
+        // Paper end - optimize is ticking ready type functions
     }
 
     private boolean a(long i, Function<PlayerChunk, CompletableFuture<Either<Chunk, PlayerChunk.Failure>>> function) {