Paper/patches/server/0581-Use-getChunkIfLoadedImmediately-in-places.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Mon, 8 Jul 2019 00:13:36 -0700
Subject: [PATCH] Use getChunkIfLoadedImmediately in places

This prevents us from hitting chunk loads for chunks at or less-than
ticket level 33 (yes getChunkIfLoaded will actually perform a chunk
load in that case).

diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index f4b884a7c9e20823e626f7f5604cc4e0b2edd570..e42d40654a2bb66c277daa36ee08b56696b8c6a4 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -230,7 +230,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
     public boolean hasEntityMoveEvent; // Paper - Add EntityMoveEvent
 
     public LevelChunk getChunkIfLoaded(int x, int z) {
-        return this.chunkSource.getChunk(x, z, false);
+        return this.chunkSource.getChunkAtIfLoadedImmediately(x, z); // Paper - Use getChunkIfLoadedImmediately
     }
 
     @Override
diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
index 411841f2d8013ae9142b96c251aabd54d16c5b73..efda6fbe8d02477cf8251c68683ae8bf7c5f1667 100644
--- a/src/main/java/net/minecraft/world/level/Level.java
+++ b/src/main/java/net/minecraft/world/level/Level.java
@@ -179,6 +179,13 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
         return (CraftServer) Bukkit.getServer();
     }
 
+    // Paper start - Use getChunkIfLoadedImmediately
+    @Override
+    public boolean hasChunk(int chunkX, int chunkZ) {
+        return this.getChunkIfLoaded(chunkX, chunkZ) != null;
+    }
+    // Paper end - Use getChunkIfLoadedImmediately
+
     public abstract ResourceKey<LevelStem> getTypeKey();
 
     protected Level(WritableLevelData worlddatamutable, ResourceKey<Level> resourcekey, RegistryAccess iregistrycustom, Holder<DimensionType> holder, Supplier<ProfilerFiller> supplier, boolean flag, boolean flag1, long i, int j, org.bukkit.generator.ChunkGenerator gen, org.bukkit.generator.BiomeProvider biomeProvider, org.bukkit.World.Environment env, java.util.function.Function<org.spigotmc.SpigotWorldConfig, io.papermc.paper.configuration.WorldConfiguration> paperWorldConfigCreator) { // Paper - create paper world config
diff --git a/src/main/java/net/minecraft/world/level/gameevent/GameEventDispatcher.java b/src/main/java/net/minecraft/world/level/gameevent/GameEventDispatcher.java
index 13b34e89bd3e55df1bb1d4d0cf013bafae43f502..df6c97be1b278c97a20390be5d3e60f429383702 100644
--- a/src/main/java/net/minecraft/world/level/gameevent/GameEventDispatcher.java
+++ b/src/main/java/net/minecraft/world/level/gameevent/GameEventDispatcher.java
@@ -56,7 +56,7 @@ public class GameEventDispatcher {
 
         for (int l1 = j; l1 <= i1; ++l1) {
             for (int i2 = l; i2 <= k1; ++i2) {
-                LevelChunk chunk = this.level.getChunkSource().getChunkNow(l1, i2);
+                LevelChunk chunk = (LevelChunk) this.level.getChunkIfLoadedImmediately(l1, i2); // Paper - Use getChunkIfLoadedImmediately
 
                 if (chunk != null) {
                     for (int j2 = k; j2 <= j1; ++j2) {