Progress with loading custom dimensions

It begins loading but complains about having the same UUID (it's using the same conversion stuff)

pom.xml

@@ -32,6 +32,12 @@
             <groupId>org.spigotmc</groupId>
             <artifactId>spigot</artifactId>
             <version>1.16.2-R0.1-SNAPSHOT</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>3.0.0</version>
         </dependency>
     </dependencies>
 

src/main/java/buttondevteam/customdimensions/CustomDimensions.java

@@ -11,10 +11,6 @@ import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.world.WorldLoadEvent;
 import org.bukkit.plugin.java.JavaPlugin;
-import org.objenesis.Objenesis;
-import org.objenesis.ObjenesisStd;
-import org.spigotmc.SpigotWorldConfig;
-import org.spigotmc.TickLimiter;
 
 import java.util.*;
 
@@ -69,13 +65,13 @@ public class CustomDimensions extends JavaPlugin implements Listener {
 			if (resourcekey != WorldDimension.OVERWORLD) {
 				ResourceKey<World> resourcekey1 = ResourceKey.a(IRegistry.L, resourcekey.a());
 				DimensionManager dimensionmanager1 = entry.getValue().b();
-				ChunkGenerator chunkgenerator = entry.getValue().c();
+				ChunkGenerator chunkgenerator = entry.getValue().c(); //TODO: Shade
-				SecondaryWorldData secondaryworlddata = new SecondaryWorldData(saveData, iworlddataserver);
+				var data = DimensionWorldData.create((WorldDataServer) iworlddataserver, "dream_dimension", EnumGamemode.CREATIVE);
 				WorldServer worldserver1 = new WorldServer(console, console.executorService, console.convertable,
-						secondaryworlddata, resourcekey1, dimensionmanager1, worldloadlistener, chunkgenerator,
+						data, resourcekey1, dimensionmanager1, worldloadlistener, chunkgenerator,
 						false, //isDebugWorld
 						BiomeManager.a(mainWorld.getSeed()), //Biome seed
-						ImmutableList.of(), false, org.bukkit.World.Environment.NORMAL, null, secondaryworlddata.getName());
+						ImmutableList.of(), false, org.bukkit.World.Environment.NORMAL, null);
 
 				((CraftWorld) mainWorld).getHandle().getWorldBorder().a(new IWorldBorderListener.a(worldserver1.getWorldBorder()));
 				console.worldServer.put(resourcekey1, worldserver1);

src/main/java/buttondevteam/customdimensions/DimensionWorldData.java

@@ -0,0 +1,39 @@
+package buttondevteam.customdimensions;
+
+import com.mojang.serialization.Lifecycle;
+import net.minecraft.server.v1_16_R2.*;
+import org.mockito.Answers;
+import org.mockito.Mockito;
+import org.mockito.invocation.InvocationOnMock;
+import org.mockito.stubbing.Answer;
+
+public class DimensionWorldData extends WorldDataServer {
+	public DimensionWorldData(WorldSettings worldsettings, GeneratorSettings generatorsettings, Lifecycle lifecycle) {
+		super(worldsettings, generatorsettings, lifecycle);
+	}
+
+	private String name;
+	private EnumGamemode gamemode;
+
+	@Override
+	public String getName() {
+		return name;
+	}
+
+	@Override
+	public EnumGamemode getGameType() {
+		return gamemode;
+	}
+
+	public static DimensionWorldData create(WorldDataServer data, String name, EnumGamemode gamemode) {
+		var mock = Mockito.mock(DimensionWorldData.class, invocation -> {
+			if (invocation.getMethod().getDeclaringClass() == DimensionWorldData.class)
+				return invocation.callRealMethod();
+			return invocation.getMethod().invoke(data, invocation.getArguments());
+		});
+		mock.name = name;
+		mock.gamemode = gamemode; //There are a couple things that come from SaveData, but that's the same
+		mock.b = data.b;
+		return mock;
+	}
+}