From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Cryptite <cryptite@gmail.com>
Date: Sat, 9 Nov 2024 09:56:09 -0600
Subject: [PATCH] Add World Instance flag


diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 585e2b43a0326f0b81597fa1234d3c67c76af550..e256e5ff5c167c6cff5b9e985cdc80d5c9203708 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -231,6 +231,7 @@ public class ServerLevel extends Level implements ServerEntityGetter, WorldGenLe
     public boolean hasPhysicsEvent = true; // Paper - BlockPhysicsEvent
     public boolean hasEntityMoveEvent; // Paper - Add EntityMoveEvent
     private final alternate.current.wire.WireHandler wireHandler = new alternate.current.wire.WireHandler(this); // Paper - optimize redstone (Alternate Current)
+    public boolean instance; // Slice
 
     public LevelChunk getChunkIfLoaded(int x, int z) {
         return this.chunkSource.getChunkAtIfLoadedImmediately(x, z); // Paper - Use getChunkIfLoadedImmediately
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index 57da11c0da7322e74810e7108e9c8000b0c36520..68e3dee346fe013f8e69900a0911583f851d2782 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -1330,6 +1330,18 @@ public class CraftWorld extends CraftRegionAccessor implements World {
         this.world.noSave = !value;
     }
 
+    // Slice start
+    @Override
+    public boolean isInstance() {
+        return world.instance;
+    }
+
+    @Override
+    public void setInstance(boolean value) {
+        world.instance = value;
+    }
+    // Slice end
+
     @Override
     public void setDifficulty(Difficulty difficulty) {
         this.getHandle().getServer().setDifficulty(this.getHandle(), net.minecraft.world.Difficulty.byId(difficulty.getValue()), true); // Paper - per level difficulty; don't skip other difficulty-changing logic