PaperMC/Spigot-Server-Patches/0375-Fix-Sending-Chunks-to-Client.patch

From 9bd565eb9c7a00c05a056cdffc13286be4049e01 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 29 Sep 2018 01:18:16 -0400
Subject: [PATCH] Fix Sending Chunks to Client

Vanilla has some screwy logic that doesn't send a chunk until
it has been post processed. This is an issue as post processing
doesn't occur until all neighbor chunks have been loaded.

This can reduce view distance while generating terrain, but also
cause bugs where chunks are never sent to the client.

This fix always sends chunks to the client, and simply updates
the client anytime post processing is triggered with the new chunk data.

diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index 07bc23e28..b9242d4a2 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -1184,7 +1184,7 @@ public class Chunk implements IChunkAccess {
     }
 
     public boolean isReady() {
-        return this.C.a(ChunkStatus.POSTPROCESSED);
+        return true; // Paper - Always send chunks
     }
 
     public boolean v() {
@@ -1422,6 +1422,13 @@ public class Chunk implements IChunkAccess {
             this.h.clear();
             this.a(ChunkStatus.POSTPROCESSED);
             this.m.a(this);
+            // Paper start - resend chunk after post process
+            PlayerChunk playerChunk = ((WorldServer) world).getPlayerChunkMap().getChunk(locX, locZ);
+            if (playerChunk != null) {
+                playerChunk.done = false;
+                playerChunk.sendAll();
+            }
+            // Paper end
         }
     }
 
diff --git a/src/main/java/net/minecraft/server/PlayerChunk.java b/src/main/java/net/minecraft/server/PlayerChunk.java
index cbff0d946..3ac09b91f 100644
--- a/src/main/java/net/minecraft/server/PlayerChunk.java
+++ b/src/main/java/net/minecraft/server/PlayerChunk.java
@@ -23,7 +23,7 @@ public class PlayerChunk {
     private int dirtyCount;
     private int h;
     private long i;
-    private boolean done;
+    boolean done; // Paper - package-private
 
     // CraftBukkit start - add fields
     // You know the drill, https://hub.spigotmc.org/stash/projects/SPIGOT/repos/craftbukkit/browse
@@ -155,6 +155,7 @@ public class PlayerChunk {
         }
     }
 
+    public boolean sendAll() { return b(); } // Paper - OBFHELPER
     public boolean b() {
         if (this.done) {
             return true;
-- 
2.19.2