Paper/Spigot-Server-Patches/0337-Send-nearby-packets-from-world-player-list-not-serve.patch

From 8a7c8360a348229b1e81432124ea1093dc29bc70 Mon Sep 17 00:00:00 2001
From: Mystiflow <mystiflow@gmail.com>
Date: Fri, 6 Jul 2018 13:21:30 +0100
Subject: [PATCH] Send nearby packets from world player list not server list


diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
index 6d511b6230..d8eb2e9864 100644
--- a/src/main/java/net/minecraft/server/PlayerList.java
+++ b/src/main/java/net/minecraft/server/PlayerList.java
@@ -1201,8 +1201,25 @@ public abstract class PlayerList {
     }
 
     public void sendPacketNearby(@Nullable EntityHuman entityhuman, double d0, double d1, double d2, double d3, DimensionManager dimensionmanager, Packet<?> packet) {
-        for (int i = 0; i < this.players.size(); ++i) {
-            EntityPlayer entityplayer = (EntityPlayer) this.players.get(i);
+        // Paper start - Use world list instead of server list where preferable
+        sendPacketNearby(entityhuman, d0, d1, d2, d3, dimensionmanager, null, packet); // Retained for compatibility
+    }
+
+    public void sendPacketNearby(@Nullable EntityHuman entityhuman, double d0, double d1, double d2, double d3, WorldServer world, Packet<?> packet) {
+        sendPacketNearby(entityhuman, d0, d1, d2, d3, world.dimension, world, packet);
+    }
+
+    public void sendPacketNearby(@Nullable EntityHuman entityhuman, double d0, double d1, double d2, double d3, DimensionManager dimensionmanager, @Nullable WorldServer world, Packet<?> packet) {
+        if (world == null && entityhuman != null && entityhuman.world instanceof WorldServer) {
+            world = (WorldServer) entityhuman.world;
+        }
+
+        List<? extends EntityHuman> players1 = world == null ? players : world.players;
+        for (int j = 0; j < players1.size(); ++j) {
+            EntityHuman entity = players1.get(j);
+            if (!(entity instanceof EntityPlayer)) continue;
+            EntityPlayer entityplayer = (EntityPlayer) entity;
+            // Paper end
 
             // CraftBukkit start - Test if player receiving packet can see the source of the packet
             if (entityhuman != null && entityhuman instanceof EntityPlayer && !entityplayer.getBukkitEntity().canSee(((EntityPlayer) entityhuman).getBukkitEntity())) {
@@ -1210,7 +1227,7 @@ public abstract class PlayerList {
             }
             // CraftBukkit end
 
-            if (entityplayer != entityhuman && entityplayer.dimension == dimensionmanager) {
+            if (entityplayer != entityhuman && (world != null || entityplayer.dimension == dimensionmanager)) { // Paper
                 double d4 = d0 - entityplayer.locX;
                 double d5 = d1 - entityplayer.locY;
                 double d6 = d2 - entityplayer.locZ;
diff --git a/src/main/java/net/minecraft/server/WorldManager.java b/src/main/java/net/minecraft/server/WorldManager.java
index e26405d341..23f390c221 100644
--- a/src/main/java/net/minecraft/server/WorldManager.java
+++ b/src/main/java/net/minecraft/server/WorldManager.java
@@ -35,8 +35,8 @@ public class WorldManager implements IWorldAccess {
     }
 
     public void a(@Nullable EntityHuman entityhuman, SoundEffect soundeffect, SoundCategory soundcategory, double d0, double d1, double d2, float f, float f1) {
-        // CraftBukkit - this.world.dimension
-        this.a.getPlayerList().sendPacketNearby(entityhuman, d0, d1, d2, f > 1.0F ? (double) (16.0F * f) : 16.0D, this.world.dimension, new PacketPlayOutNamedSoundEffect(soundeffect, soundcategory, d0, d1, d2, f, f1));
+        // CraftBukkit - this.world.dimension, // Paper - this.world.dimension -> this.world
+        this.a.getPlayerList().sendPacketNearby(entityhuman, d0, d1, d2, f > 1.0F ? (double) (16.0F * f) : 16.0D, this.world, new PacketPlayOutNamedSoundEffect(soundeffect, soundcategory, d0, d1, d2, f, f1));
     }
 
     public void a(int i, int j, int k, int l, int i1, int j1) {}
@@ -51,7 +51,7 @@ public class WorldManager implements IWorldAccess {
 
     public void a(EntityHuman entityhuman, int i, BlockPosition blockposition, int j) {
         // CraftBukkit - this.world.dimension
-        this.a.getPlayerList().sendPacketNearby(entityhuman, (double) blockposition.getX(), (double) blockposition.getY(), (double) blockposition.getZ(), 64.0D, this.world.dimension, new PacketPlayOutWorldEvent(i, blockposition, j, false));
+        this.a.getPlayerList().sendPacketNearby(entityhuman, (double) blockposition.getX(), (double) blockposition.getY(), (double) blockposition.getZ(), 64.0D, this.world, new PacketPlayOutWorldEvent(i, blockposition, j, false));
     }
 
     public void a(int i, BlockPosition blockposition, int j) {
@@ -59,7 +59,7 @@ public class WorldManager implements IWorldAccess {
     }
 
     public void b(int i, BlockPosition blockposition, int j) {
-        Iterator iterator = this.a.getPlayerList().v().iterator();
+        // Iterator iterator = this.a.getPlayerList().v().iterator(); // Paper
 
         // CraftBukkit start
         EntityHuman entityhuman = null;
@@ -67,8 +67,14 @@ public class WorldManager implements IWorldAccess {
         if (entity instanceof EntityHuman) entityhuman = (EntityHuman) entity;
         // CraftBukkit end
 
+        // Paper start
+        java.util.List<? extends EntityHuman> list = entity != null ? entity.world.players : this.a.getPlayerList().v();
+        Iterator<? extends EntityHuman> iterator = list.iterator();
         while (iterator.hasNext()) {
-            EntityPlayer entityplayer = (EntityPlayer) iterator.next();
+            EntityHuman human = iterator.next();
+            if (!(human instanceof EntityPlayer)) continue;
+            EntityPlayer entityplayer = (EntityPlayer) human;
+            // Paper end
 
             if (entityplayer != null && entityplayer.world == this.world && entityplayer.getId() != i) {
                 double d0 = (double) blockposition.getX() - entityplayer.locX;
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 911d03c70b..f837e6c36c 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -1086,7 +1086,7 @@ public class WorldServer extends World implements IAsyncTaskHandler {
         }
         // CraftBukkit end
         if (super.strikeLightning(entity)) {
-            this.server.getPlayerList().sendPacketNearby((EntityHuman) null, entity.locX, entity.locY, entity.locZ, 512.0D, dimension, new PacketPlayOutSpawnEntityWeather(entity)); // CraftBukkit - Use dimension
+            this.server.getPlayerList().sendPacketNearby((EntityHuman) null, entity.locX, entity.locY, entity.locZ, 512.0D, this, new PacketPlayOutSpawnEntityWeather(entity)); // CraftBukkit - Use dimension, // Paper - use world instead of dimension
             return true;
         } else {
             return false;
@@ -1146,8 +1146,8 @@ public class WorldServer extends World implements IAsyncTaskHandler {
             BlockActionData blockactiondata = (BlockActionData) this.d.removeFirst();
 
             if (this.a(blockactiondata)) {
-                // CraftBukkit - this.worldProvider.dimension -> this.dimension
-                this.server.getPlayerList().sendPacketNearby((EntityHuman) null, (double) blockactiondata.a().getX(), (double) blockactiondata.a().getY(), (double) blockactiondata.a().getZ(), 64.0D, dimension, new PacketPlayOutBlockAction(blockactiondata.a(), blockactiondata.b(), blockactiondata.c(), blockactiondata.d()));
+                // CraftBukkit - this.worldProvider.dimension -> this.dimension, // Paper - dimension -> world
+                this.server.getPlayerList().sendPacketNearby((EntityHuman) null, (double) blockactiondata.a().getX(), (double) blockactiondata.a().getY(), (double) blockactiondata.a().getZ(), 64.0D, this, new PacketPlayOutBlockAction(blockactiondata.a(), blockactiondata.b(), blockactiondata.c(), blockactiondata.d()));
             }
         }
 
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index 80fd49b6e1..ba2e768594 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -1512,7 +1512,7 @@ public class CraftWorld implements World {
         double z = loc.getZ();
 
         PacketPlayOutCustomSoundEffect packet = new PacketPlayOutCustomSoundEffect(new MinecraftKey(sound), SoundCategory.valueOf(category.name()), new Vec3D(x, y, z), volume, pitch);
-        world.getMinecraftServer().getPlayerList().sendPacketNearby(null, x, y, z, volume > 1.0F ? 16.0F * volume : 16.0D, this.world.dimension, packet);
+        world.getMinecraftServer().getPlayerList().sendPacketNearby(null, x, y, z, volume > 1.0F ? 16.0F * volume : 16.0D, this.world, packet); // Paper - this.world.dimension -> this.world
     }
 
     public String getGameRuleValue(String rule) {
-- 
2.19.0