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Paper/patches/server/0880-Fix-missing-map-initialize-event-call.patch
Spottedleaf 8c5b837e05 Rework async chunk api implementation
Firstly, the old methods all routed to the CompletableFuture method.
However, the CF method could not guarantee that if the caller
was off-main that the future would be "completed" on-main. Since
the callback methods used the CF one, this meant that the callback
methods did not guarantee that the callbacks were to be called on
the main thread.

Now, all methods route to getChunkAtAsync(x, z, gen, urgent, cb)
so that the methods with the callback are guaranteed to invoke
the callback on the main thread. The CF behavior remains unchanged;
it may still appear to complete on main if invoked off-main.

Secondly, remove the scheduleOnMain invocation in the async
chunk completion. This unnecessarily delays the callback
by 1 tick.

Thirdly, add getChunksAtAsync(minX, minZ, maxX, maxZ, ...) which
will load chunks within an area. This method is provided as a helper
as keeping all chunks loaded within an area can be complicated to
implement for plugins (due to the lacking ticket API), and is
already implemented internally anyways.

Fourthly, remove the ticket addition that occured with getChunkAt
and getChunkAtAsync. The ticket addition may delay the unloading
of the chunk unnecessarily. It also fixes a very rare timing bug
where the future/callback would be completed after the chunk
unloads.
2024-11-18 23:00:59 -08:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Warrior <50800980+Warriorrrr@users.noreply.github.com>
Date: Sun, 24 Sep 2023 18:35:28 +0200
Subject: [PATCH] Fix missing map initialize event call
== AT ==
public net.minecraft.world.level.storage.DimensionDataStorage readSavedData(Ljava/util/function/Function;Lnet/minecraft/util/datafix/DataFixTypes;Ljava/lang/String;)Lnet/minecraft/world/level/saveddata/SavedData;
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 5770fa7a798c1c019bef27426f945f3cc0387a36..6923624f069c1aeb757386ef91d285769a2923a2 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -1701,13 +1701,29 @@ public class ServerLevel extends Level implements ServerEntityGetter, WorldGenLe
@Nullable
@Override
public MapItemSavedData getMapData(MapId id) {
- // CraftBukkit start
- MapItemSavedData worldmap = (MapItemSavedData) this.getServer().overworld().getDataStorage().get(MapItemSavedData.factory(), id.key());
- if (worldmap != null) {
- worldmap.id = id;
+ // Paper start - Call missing map initialize event and set id
+ final DimensionDataStorage storage = this.getServer().overworld().getDataStorage();
+
+ final Optional<net.minecraft.world.level.saveddata.SavedData> cacheEntry = storage.cache.get(id.key());
+ if (cacheEntry == null) { // Cache did not contain, try to load and may init
+ final MapItemSavedData worldmap = storage.get(MapItemSavedData.factory(), id.key()); // get populates the cache
+ if (worldmap != null) { // map was read, init it and return
+ worldmap.id = id;
+ new MapInitializeEvent(worldmap.mapView).callEvent();
+ return worldmap;
+ }
+
+ return null; // Map does not exist, reading failed.
}
- return worldmap;
- // CraftBukkit end
+
+ // Cache entry exists, update it with the id ref and return.
+ if (cacheEntry.orElse(null) instanceof final MapItemSavedData mapItemSavedData) {
+ mapItemSavedData.id = id;
+ return mapItemSavedData;
+ }
+
+ return null;
+ // Paper end - Call missing map initialize event and set id
}
@Override