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Fix client lag on advancement loading (#4710)

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When new advancements are added via the UnsafeValues#loadAdvancement
API, it triggers a full datapack reload when this is not necessary. The
advancement is already loaded directly into the advancement registry,
and the point of saving the advancement to the Bukkit datapack seems to
be for persistence. By removing the call to reload datapacks when an
advancement is loaded, the client no longer completely freezes up when
adding a new advancement.
To ensure the client still receives the updated advancement data, we
manually reload the advancement data for all players, which
normally takes place as a part of the datapack reloading.
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: jmp <jasonpenilla2@me.com>
Date: Sat, 31 Oct 2020 11:49:01 -0700
Subject: [PATCH] Fix client lag on advancement loading
When new advancements are added via the UnsafeValues#loadAdvancement
API, it triggers a full datapack reload when this is not necessary. The
advancement is already loaded directly into the advancement registry,
and the point of saving the advancement to the Bukkit datapack seems to
be for persistence. By removing the call to reload datapacks when an
advancement is loaded, the client no longer completely freezes up when
adding a new advancement.
To ensure the client still receives the updated advancement data, we
manually reload the advancement data for all players, which
normally takes place as a part of the datapack reloading.
diff --git a/src/main/java/net/minecraft/server/AdvancementDataPlayer.java b/src/main/java/net/minecraft/server/AdvancementDataPlayer.java
index 17789407b9e86896a963a305a13357286aa5f319..ddbf8237d598f32e6e5361ca92ace268dfbec906 100644
--- a/src/main/java/net/minecraft/server/AdvancementDataPlayer.java
+++ b/src/main/java/net/minecraft/server/AdvancementDataPlayer.java
@@ -78,6 +78,7 @@ public class AdvancementDataPlayer {
}
+ public final void reload(AdvancementDataWorld advancementDataWorld) { this.a(advancementDataWorld); } // Paper - OBFHELPER
public void a(AdvancementDataWorld advancementdataworld) {
this.a();
this.data.clear();
@@ -374,6 +375,7 @@ public class AdvancementDataPlayer {
}
+ public final void sendUpdateIfNeeded(EntityPlayer entityPlayer) { this.b(entityPlayer); } // Paper - OBFHELPER
public void b(EntityPlayer entityplayer) {
if (this.m || !this.i.isEmpty() || !this.j.isEmpty()) {
Map<MinecraftKey, AdvancementProgress> map = Maps.newHashMap();
diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
index 3ebaa9463e365831de37d8fa3cc191693f5b856f..9957c65d418f39e74956d1182b8fbf539f404eb6 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
@@ -282,7 +282,13 @@ public final class CraftMagicNumbers implements UnsafeValues {
Bukkit.getLogger().log(Level.SEVERE, "Error saving advancement " + key, ex);
}
- MinecraftServer.getServer().getPlayerList().reload();
+ // Paper start
+ //MinecraftServer.getServer().getPlayerList().reload();
+ MinecraftServer.getServer().getPlayerList().getPlayers().forEach(player -> {
+ player.getAdvancementData().reload(MinecraftServer.getServer().getAdvancementData());
+ player.getAdvancementData().sendUpdateIfNeeded(player);
+ });
+ // Paper end
return bukkit;
}