From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Cryptite <cryptite@gmail.com>
Date: Mon, 10 Apr 2023 07:37:05 -0500
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 fb3f71f9824e522df22c50f55b4d41e70a1d1c63..7f81f3c3339ee1858013a2e1b18c457d9f3eaf03 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -223,6 +223,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
     public final UUID uuid;
     public boolean hasPhysicsEvent = true; // Paper
     public boolean hasEntityMoveEvent = false; // Paper - Add EntityMoveEvent
+    public boolean instance; // Slice
     private final alternate.current.wire.WireHandler wireHandler = new alternate.current.wire.WireHandler(this); // Paper - optimize redstone (Alternate Current)
     public static Throwable getAddToWorldStackTrace(Entity entity) {
         final Throwable thr = new Throwable(entity + " Added to world at " + new java.util.Date());
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index ec61ed7da1531b26e372a72e824c72d5b314524c..2f7ca95e8ac48ea63a2ee28afc50521d8d71accb 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -1301,6 +1301,18 @@ 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