1 files changed, 48 insertions, 0 deletions
diff --git a/patches/server/0875-Fix-missing-map-initialize-event-call.patch b/patches/server/0875-Fix-missing-map-initialize-event-call.patch
new file mode 100644
index 0000000000..f9d9852b1b
--- /dev/null
+++ b/patches/server/0875-Fix-missing-map-initialize-event-call.patch
@@ -0,0 +1,48 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Warrior <[email protected]>
+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 9b4e3144b062007b936b3b444320646061cc0133..2a56e7846b3def7d1e9a2d5e473a6806a1acec28 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -1711,13 +1711,29 @@ 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