From d2342d79931a860f163b0a10c49d0a63468785fe Mon Sep 17 00:00:00 2001
From: YoyoNow <jwsteam@nidido.de>
Date: Wed, 6 Aug 2025 17:21:57 +0200
Subject: [PATCH] Fix bobby in DynamicRegionSystem

---
 .../bausystem/region/DynamicRegionSystem.java | 50 ++++++++++++++++++-
 1 file changed, 48 insertions(+), 2 deletions(-)

diff --git a/BauSystem/BauSystem_RegionDynamic/src/de/steamwar/bausystem/region/DynamicRegionSystem.java b/BauSystem/BauSystem_RegionDynamic/src/de/steamwar/bausystem/region/DynamicRegionSystem.java
index 48eef262..7b8f6a8c 100644
--- a/BauSystem/BauSystem_RegionDynamic/src/de/steamwar/bausystem/region/DynamicRegionSystem.java
+++ b/BauSystem/BauSystem_RegionDynamic/src/de/steamwar/bausystem/region/DynamicRegionSystem.java
@@ -19,6 +19,8 @@
 
 package de.steamwar.bausystem.region;
 
+import com.comphenix.tinyprotocol.TinyProtocol;
+import de.steamwar.Reflection;
 import de.steamwar.bausystem.BauSystem;
 import de.steamwar.bausystem.region.dynamic.DynamicRegion;
 import de.steamwar.bausystem.region.dynamic.MovementListener;
@@ -28,11 +30,16 @@ import de.steamwar.bausystem.region.dynamic.path.PathRegion;
 import de.steamwar.bausystem.region.dynamic.spawn.SpawnPathRegion;
 import de.steamwar.bausystem.region.dynamic.spawn.SpawnRegion;
 import de.steamwar.bausystem.region.dynamic.spawn.SpawnResetter;
+import de.steamwar.core.Core;
+import de.steamwar.providers.BauServerInfo;
 import lombok.NonNull;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
 import org.bukkit.World;
+import sun.misc.Unsafe;
 
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.RecordComponent;
 import java.util.*;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
@@ -44,14 +51,53 @@ public class DynamicRegionSystem implements RegionSystem {
 
     private static Map<UUID, Region> regionMap = new HashMap<>();
 
+    private Class<?> loginPacket = Reflection.getClass("net.minecraft.network.protocol.game.ClientboundLoginPacket");
+    private Class<?> commonPlayerSpawnInfo = Reflection.getClass("net.minecraft.network.protocol.game.CommonPlayerSpawnInfo");
+    private Reflection.Constructor loginPacketConstructor = Reflection.getConstructor(loginPacket, int.class, boolean.class, Set.class, int.class, int.class, int.class, boolean.class, boolean.class, boolean.class, commonPlayerSpawnInfo, boolean.class);
+    private Class<?> holderClass = Reflection.getClass("net.minecraft.core.Holder");
+    private Class<?> resourceKeyClass = Reflection.getClass("net.minecraft.resources.ResourceKey");
+    private Class<?> gameTypeClass = Reflection.getClass("net.minecraft.world.level.GameType");
+    private Reflection.Constructor commonPlayerSpawnInfoConstructor = Reflection.getConstructor(commonPlayerSpawnInfo, holderClass, resourceKeyClass, long.class, gameTypeClass, gameTypeClass, boolean.class, boolean.class, Optional.class, int.class, int.class);
+    private Class<?> minecraftKeyClass = Reflection.getClass("net.minecraft.resources.MinecraftKey");
+    private Reflection.Constructor resourceKeyConstructor = Reflection.getConstructor(resourceKeyClass, minecraftKeyClass, minecraftKeyClass);
+    private Reflection.Constructor minecraftKeyConstructor = Reflection.getConstructor(minecraftKeyClass, String.class, String.class);
+
     @Override
     public void load() {
         INSTANCE = this;
+        String identifier = BauServerInfo.getOwnerUser().getUUID().toString().replace("-", "");
+        Object resourceKey = resourceKeyConstructor.invoke(minecraftKeyConstructor.invoke("minecraft", "dimension"), minecraftKeyConstructor.invoke("steamwar", "bau/" + Core.getVersion() + "/" + identifier));
+        TinyProtocol.instance.addFilter(loginPacket, (player, o) -> {
+            RecordComponent[] components = loginPacket.getRecordComponents();
+            Object[] parameters_loginPacket = new Object[components.length];
+            for (int i = 0; i < components.length; i++) {
+                try {
+                    parameters_loginPacket[i] = components[i].getAccessor().invoke(o);
+                } catch (IllegalAccessException | InvocationTargetException e) {
+                    throw new RuntimeException(e);
+                }
+            }
+            parameters_loginPacket[2] = Set.of(resourceKey);
+
+            components = commonPlayerSpawnInfo.getRecordComponents();
+            Object[] parameters_commonPlayerSpawnInfo = new Object[components.length];
+            for (int i = 0; i < components.length; i++) {
+                try {
+                    parameters_commonPlayerSpawnInfo[i] = components[i].getAccessor().invoke(parameters_loginPacket[9]);
+                } catch (IllegalAccessException | InvocationTargetException e) {
+                    throw new RuntimeException(e);
+                }
+            }
+            parameters_commonPlayerSpawnInfo[1] = resourceKey;
+            parameters_loginPacket[9] = commonPlayerSpawnInfoConstructor.invoke(parameters_commonPlayerSpawnInfo);
+
+            return loginPacketConstructor.invoke(parameters_loginPacket);
+        });
         new DynamicRegionCommand();
         RegionDataRepository.loadRegions();
         Bukkit.getPluginManager().registerEvents(new MovementListener(), BauSystem.getInstance());
 
-        if (regionMap.isEmpty()) {
+        if (regionMap.isEmpty()) { // TODO: Implement this in default region!
             new SpawnRegion(-9, -9);
             new SpawnPathRegion(-9, -28);
             new SpawnPathRegion(-9, 10);
@@ -130,7 +176,7 @@ public class DynamicRegionSystem implements RegionSystem {
             neighbours.add(get(new Location(WORLD, maxX, 0, z), regions));
         }
         neighbours.remove(GlobalRegion.INSTANCE);
-        return ((Set<DynamicRegion>)(Set) neighbours).stream();
+        return ((Set<DynamicRegion>) (Set) neighbours).stream();
     }
 
     public Stream<DynamicRegion> getNeighbours(Region region) {