v+

3.6.4

README.md

@@ -15,17 +15,17 @@ Consider supporting our development by buying Iris on spigot! We work hard to ma
 
 ### Command Line Builds
 
-1. Install [Java JDK 17](https://www.oracle.com/java/technologies/javase/jdk17-archive-downloads.html)
+1. Install [Java JDK 21](https://www.oracle.com/java/technologies/javase/jdk21-archive-downloads.html)
 2. Set the JDK installation path to `JAVA_HOME` as an environment variable.
     * Windows
         1. Start > Type `env` and press Enter
         2. Advanced > Environment Variables
         3. Under System Variables, click `New...`
         4. Variable Name: `JAVA_HOME`
-        5. Variable Value: `C:\Program Files\Java\jdk-17.0.1` (verify this exists after installing java don't just copy
+        5. Variable Value: `C:\Program Files\Java\jdk-21.0.1` (verify this exists after installing java don't just copy
            the example text)
     * MacOS
-        1. Run `/usr/libexec/java_home -V` and look for Java 17
+        1. Run `/usr/libexec/java_home -V` and look for Java 21
         2. Run `sudo nano ~/.zshenv`
         3. Add `export JAVA_HOME=$(/usr/libexec/java_home)` as a new line
         4. Use `CTRL + X`, then Press `Y`, Then `ENTER`
@@ -35,7 +35,7 @@ Consider supporting our development by buying Iris on spigot! We work hard to ma
 
 ### IDE Builds (for development)
 
-* Configure ITJ Gradle to use JDK 17 (in settings, search for gradle)
+* Configure ITJ Gradle to use JDK 21 (in settings, search for gradle)
 * Add a build line in the build.gradle for your own build task to directly compile Iris into your plugins folder if you
   prefer.
 * Resync the project & run your newly created task (under the development folder in gradle tasks!)

build.gradle

@@ -33,7 +33,7 @@ plugins {
 }
 
 
-version '3.5.7-1.19.2-1.21.4'
+version '3.6.4-1.20.1-1.21.4'
 
 // ADD YOURSELF AS A NEW LINE IF YOU WANT YOUR OWN BUILD TASK GENERATED
 // ======================== WINDOWS =============================
@@ -61,9 +61,6 @@ def NMS_BINDINGS = Map.of(
         "v1_20_R3", "1.20.4-R0.1-SNAPSHOT",
         "v1_20_R2", "1.20.2-R0.1-SNAPSHOT",
         "v1_20_R1", "1.20.1-R0.1-SNAPSHOT",
-        "v1_19_R3", "1.19.4-R0.1-SNAPSHOT",
-        "v1_19_R2", "1.19.3-R0.1-SNAPSHOT",
-        "v1_19_R1", "1.19.2-R0.1-SNAPSHOT"
 )
 def JVM_VERSION = Map.of()
 NMS_BINDINGS.each { nms ->
@@ -131,7 +128,7 @@ allprojects {
         annotationProcessor 'org.projectlombok:lombok:1.18.36'
 
         // Shaded
-        implementation 'com.dfsek:Paralithic:0.4.0'
+        implementation 'com.dfsek:paralithic:0.8.1'
         implementation 'io.papermc:paperlib:1.0.5'
         implementation "net.kyori:adventure-text-minimessage:4.17.0"
         implementation 'net.kyori:adventure-platform-bukkit:4.3.4'

core/build.gradle

@@ -62,7 +62,7 @@ dependencies {
 
     // Third Party Integrations
     compileOnly 'com.ticxo.playeranimator:PlayerAnimator:R1.2.7'
-    compileOnly 'com.nexomc:nexo:0.6.0-dev.0'
+    compileOnly 'com.nexomc:nexo:1.0.0-dev.38'
     compileOnly 'com.github.LoneDev6:api-itemsadder:3.4.1-r4'
     compileOnly 'com.github.PlaceholderAPI:placeholderapi:2.11.3'
     compileOnly 'com.github.Ssomar-Developement:SCore:4.23.10.8'

core/src/main/java/com/volmit/iris/Iris.java

@@ -32,8 +32,10 @@ import com.volmit.iris.core.nms.v1X.NMSBinding1X;
 import com.volmit.iris.core.pregenerator.LazyPregenerator;
 import com.volmit.iris.core.service.StudioSVC;
 import com.volmit.iris.core.tools.IrisToolbelt;
+import com.volmit.iris.core.tools.IrisWorldCreator;
 import com.volmit.iris.engine.EnginePanic;
 import com.volmit.iris.engine.object.IrisCompat;
+import com.volmit.iris.engine.object.IrisContextInjector;
 import com.volmit.iris.engine.object.IrisDimension;
 import com.volmit.iris.engine.object.IrisWorld;
 import com.volmit.iris.engine.platform.BukkitChunkGenerator;
@@ -101,8 +103,6 @@ import static com.volmit.iris.core.safeguard.ServerBootSFG.passedserversoftware;
 
 @SuppressWarnings("CanBeFinal")
 public class Iris extends VolmitPlugin implements Listener {
-    public static final String OVERWORLD_TAG = "31010";
-
     private static final Queue<Runnable> syncJobs = new ShurikenQueue<>();
 
     public static Iris instance;
@@ -467,6 +467,7 @@ public class Iris extends VolmitPlugin implements Listener {
         configWatcher = new FileWatcher(getDataFile("settings.json"));
         services.values().forEach(IrisService::onEnable);
         services.values().forEach(this::registerListener);
+        registerListener(new IrisContextInjector());
         J.s(() -> {
             J.a(() -> PaperLib.suggestPaper(this));
             J.a(() -> IO.delete(getTemp()));
@@ -516,10 +517,10 @@ public class Iris extends VolmitPlugin implements Listener {
                 Iris.info("Loading World: %s | Generator: %s", s, generator);
 
                 Iris.info(C.LIGHT_PURPLE + "Preparing Spawn for " + s + "' using Iris:" + generator + "...");
-                new WorldCreator(s)
+                WorldCreator c = new WorldCreator(s)
                         .generator(getDefaultWorldGenerator(s, generator))
-                        .environment(IrisData.loadAnyDimension(generator).getEnvironment())
+                        .environment(IrisData.loadAnyDimension(generator).getEnvironment());
-                        .createWorld();
+                INMS.get().createWorld(c);
                 Iris.info(C.LIGHT_PURPLE + "Loaded " + s + "!");
             }
         } catch (Throwable e) {

core/src/main/java/com/volmit/iris/core/IrisSettings.java

@@ -181,6 +181,7 @@ public class IrisSettings {
         public boolean splashLogoStartup = true;
         public boolean useConsoleCustomColors = true;
         public boolean useCustomColorsIngame = true;
+        public boolean adjustVanillaHeight = false;
         public String forceMainWorld = "";
         public int spinh = -20;
         public int spins = 7;

core/src/main/java/com/volmit/iris/core/ServerConfigurator.java

@@ -28,20 +28,27 @@ import com.volmit.iris.engine.object.IrisBiomeCustom;
 import com.volmit.iris.engine.object.IrisDimension;
 import com.volmit.iris.engine.object.IrisRange;
 import com.volmit.iris.util.collection.KList;
+import com.volmit.iris.util.collection.KMap;
 import com.volmit.iris.util.collection.KSet;
 import com.volmit.iris.util.format.C;
 import com.volmit.iris.util.plugin.VolmitSender;
 import com.volmit.iris.util.scheduling.J;
+import lombok.Data;
+import lombok.NonNull;
 import org.bukkit.Bukkit;
 import org.bukkit.configuration.InvalidConfigurationException;
 import org.bukkit.configuration.file.FileConfiguration;
 import org.bukkit.configuration.file.YamlConfiguration;
 import org.bukkit.entity.Player;
+import org.jetbrains.annotations.Nullable;
 
 import java.io.File;
 import java.io.IOException;
-import java.util.List;
+import java.util.Arrays;
 import java.util.concurrent.TimeUnit;
+import java.util.stream.Stream;
+
+import static com.volmit.iris.core.nms.datapack.IDataFixer.Dimension.*;
 
 public class ServerConfigurator {
     public static void configure() {
@@ -84,7 +91,7 @@ public class ServerConfigurator {
         }
     }
 
-    private static List<File> getDatapacksFolder() {
+    private static KList<File> getDatapacksFolder() {
         if (!IrisSettings.get().getGeneral().forceMainWorld.isEmpty()) {
             return new KList<File>().qadd(new File(Bukkit.getWorldContainer(), IrisSettings.get().getGeneral().forceMainWorld + "/datapacks"));
         }
@@ -99,57 +106,17 @@ public class ServerConfigurator {
 
     public static void installDataPacks(IDataFixer fixer, boolean fullInstall) {
         Iris.info("Checking Data Packs...");
-        File packs = new File("plugins/Iris/packs");
+        DimensionHeight height = new DimensionHeight(fixer);
-        double ultimateMaxHeight = 0;
+        KList<File> folders = getDatapacksFolder();
-        double ultimateMinHeight = 0;
+        KMap<String, KSet<String>> biomes = new KMap<>();
-        if (packs.exists() && packs.isDirectory()) {
-            for (File pack : packs.listFiles()) {
-                IrisData data = IrisData.get(pack);
-                if (pack.isDirectory()) {
-                    File dimensionsFolder = new File(pack, "dimensions");
-                    if (dimensionsFolder.exists() && dimensionsFolder.isDirectory()) {
-                        for (File file : dimensionsFolder.listFiles()) {
-                            if (file.isFile() && file.getName().endsWith(".json")) {
-                                IrisDimension dim = data.getDimensionLoader().load(file.getName().split("\\Q.\\E")[0]);
-                                if (ultimateMaxHeight < dim.getDimensionHeight().getMax()) {
-                                    ultimateMaxHeight = dim.getDimensionHeight().getMax();
-                                }
-                                if (ultimateMinHeight > dim.getDimensionHeight().getMin()) {
-                                    ultimateMinHeight = dim.getDimensionHeight().getMin();
-                                }
-                            }
-                        }
-                    }
-                }
-            }
-        }
 
-        if (packs.exists()) {
+        allPacks().flatMap(height::merge)
-            for (File i : packs.listFiles()) {
+                .parallel()
-                if (i.isDirectory()) {
+                .forEach(dim -> {
-                    Iris.verbose("Checking Pack: " + i.getPath());
+                    Iris.verbose("  Checking Dimension " + dim.getLoadFile().getPath());
-                    IrisData data = IrisData.get(i);
+                    dim.installBiomes(fixer, dim::getLoader, folders, biomes.computeIfAbsent(dim.getLoadKey(), k -> new KSet<>()));
-                    File dims = new File(i, "dimensions");
+                });
-
+        IrisDimension.writeShared(folders, height);
-                    if (dims.exists()) {
-                        for (File j : dims.listFiles()) {
-                            if (j.getName().endsWith(".json")) {
-                                IrisDimension dim = data.getDimensionLoader().load(j.getName().split("\\Q.\\E")[0]);
-
-                                if (dim == null) {
-                                    continue;
-                                }
-
-                                Iris.verbose("  Checking Dimension " + dim.getLoadFile().getPath());
-                                for (File dpack : getDatapacksFolder()) {
-                                    dim.installDataPack(fixer, () -> data, dpack, ultimateMaxHeight, ultimateMinHeight);
-                                }
-                            }
-                        }
-                    }
-                }
-            }
-        }
 
         Iris.info("Data Packs Setup!");
 
@@ -158,57 +125,40 @@ public class ServerConfigurator {
     }
 
     private static void verifyDataPacksPost(boolean allowRestarting) {
-        File packs = new File("plugins/Iris/packs");
+        boolean bad = allPacks()
+                .map(data -> {
+                    Iris.verbose("Checking Pack: " + data.getDataFolder().getPath());
+                    var loader = data.getDimensionLoader();
+                    return loader.loadAll(loader.getPossibleKeys())
+                            .stream()
+                            .map(ServerConfigurator::verifyDataPackInstalled)
+                            .toList()
+                            .contains(false);
+                })
+                .toList()
+                .contains(true);
+        if (!bad) return;
 
-        boolean bad = false;
-        if (packs.exists()) {
-            for (File i : packs.listFiles()) {
-                if (i.isDirectory()) {
-                    Iris.verbose("Checking Pack: " + i.getPath());
-                    IrisData data = IrisData.get(i);
-                    File dims = new File(i, "dimensions");
 
-                    if (dims.exists()) {
+        if (allowRestarting) {
-                        for (File j : dims.listFiles()) {
+            restart();
-                            if (j.getName().endsWith(".json")) {
+        } else if (INMS.get().supportsDataPacks()) {
-                                IrisDimension dim = data.getDimensionLoader().load(j.getName().split("\\Q.\\E")[0]);
+            Iris.error("============================================================================");
+            Iris.error(C.ITALIC + "You need to restart your server to properly generate custom biomes.");
+            Iris.error(C.ITALIC + "By continuing, Iris will use backup biomes in place of the custom biomes.");
+            Iris.error("----------------------------------------------------------------------------");
+            Iris.error(C.UNDERLINE + "IT IS HIGHLY RECOMMENDED YOU RESTART THE SERVER BEFORE GENERATING!");
+            Iris.error("============================================================================");
 
-                                if (dim == null) {
+            for (Player i : Bukkit.getOnlinePlayers()) {
-                                    Iris.error("Failed to load " + j.getPath() + " ");
+                if (i.isOp() || i.hasPermission("iris.all")) {
-                                    continue;
+                    VolmitSender sender = new VolmitSender(i, Iris.instance.getTag("WARNING"));
-                                }
+                    sender.sendMessage("There are some Iris Packs that have custom biomes in them");
-
+                    sender.sendMessage("You need to restart your server to use these packs.");
-                                if (!verifyDataPackInstalled(dim)) {
-                                    bad = true;
-                                }
-                            }
-                        }
-                    }
                 }
             }
-        }
 
-        if (bad) {
+            J.sleep(3000);
-            if (allowRestarting) {
-                restart();
-            } else if (INMS.get().supportsDataPacks()) {
-                Iris.error("============================================================================");
-                Iris.error(C.ITALIC + "You need to restart your server to properly generate custom biomes.");
-                Iris.error(C.ITALIC + "By continuing, Iris will use backup biomes in place of the custom biomes.");
-                Iris.error("----------------------------------------------------------------------------");
-                Iris.error(C.UNDERLINE + "IT IS HIGHLY RECOMMENDED YOU RESTART THE SERVER BEFORE GENERATING!");
-                Iris.error("============================================================================");
-
-                for (Player i : Bukkit.getOnlinePlayers()) {
-                    if (i.isOp() || i.hasPermission("iris.all")) {
-                        VolmitSender sender = new VolmitSender(i, Iris.instance.getTag("WARNING"));
-                        sender.sendMessage("There are some Iris Packs that have custom biomes in them");
-                        sender.sendMessage("You need to restart your server to use these packs.");
-                    }
-                }
-
-                J.sleep(3000);
-            }
         }
     }
 
@@ -218,7 +168,7 @@ public class ServerConfigurator {
             Iris.warn("This will only happen when your pack changes (updates/first time setup)");
             Iris.warn("(You can disable this auto restart in iris settings)");
             J.s(() -> {
-                Iris.warn("Looks like the restart command diddn't work. Stopping the server instead!");
+                Iris.warn("Looks like the restart command didn't work. Stopping the server instead!");
                 Bukkit.shutdown();
             }, 100);
             Bukkit.dispatchCommand(Bukkit.getConsoleSender(), "restart");
@@ -226,22 +176,24 @@ public class ServerConfigurator {
     }
 
     public static boolean verifyDataPackInstalled(IrisDimension dimension) {
-        IrisData idm = IrisData.get(Iris.instance.getDataFolder("packs", dimension.getLoadKey()));
         KSet<String> keys = new KSet<>();
         boolean warn = false;
 
-        for (IrisBiome i : dimension.getAllBiomes(() -> idm)) {
+        for (IrisBiome i : dimension.getAllBiomes(dimension::getLoader)) {
             if (i.isCustom()) {
                 for (IrisBiomeCustom j : i.getCustomDerivitives()) {
                     keys.add(dimension.getLoadKey() + ":" + j.getId());
                 }
             }
         }
+        String key = getWorld(dimension.getLoader());
+        if (key == null) key = dimension.getLoadKey();
+        else key += "/" + dimension.getLoadKey();
 
         if (!INMS.get().supportsDataPacks()) {
             if (!keys.isEmpty()) {
                 Iris.warn("===================================================================================");
-                Iris.warn("Pack " + dimension.getLoadKey() + " has " + keys.size() + " custom biome(s). ");
+                Iris.warn("Pack " + key + " has " + keys.size() + " custom biome(s). ");
                 Iris.warn("Your server version does not yet support datapacks for iris.");
                 Iris.warn("The world will generate these biomes as backup biomes.");
                 Iris.warn("====================================================================================");
@@ -260,10 +212,74 @@ public class ServerConfigurator {
         }
 
         if (warn) {
-            Iris.error("The Pack " + dimension.getLoadKey() + " is INCAPABLE of generating custom biomes");
+            Iris.error("The Pack " + key + " is INCAPABLE of generating custom biomes");
             Iris.error("If not done automatically, restart your server before generating with this pack!");
         }
 
         return !warn;
     }
+
+    public static Stream<IrisData> allPacks() {
+        return Stream.concat(listFiles(new File("plugins/Iris/packs")),
+                        listFiles(Bukkit.getWorldContainer()).map(w -> new File(w, "iris/pack")))
+                .filter(File::isDirectory)
+                .map(IrisData::get);
+    }
+
+    @Nullable
+    public static String getWorld(@NonNull IrisData data) {
+        String worldContainer = Bukkit.getWorldContainer().getAbsolutePath();
+        if (!worldContainer.endsWith(File.separator)) worldContainer += File.separator;
+        
+        String path = data.getDataFolder().getAbsolutePath();
+        if (!path.startsWith(worldContainer)) return null;
+        int l = path.endsWith(File.separator) ? 11 : 10;
+        return path.substring(worldContainer.length(), path.length() - l);
+    }
+
+    private static Stream<File> listFiles(File parent) {
+        var files = parent.listFiles();
+        return files == null ? Stream.empty() : Arrays.stream(files);
+    }
+
+    @Data
+    public static class DimensionHeight {
+        private final IDataFixer fixer;
+        private IrisRange overworld = new IrisRange();
+        private IrisRange nether = new IrisRange();
+        private IrisRange end = new IrisRange();
+        private int logicalOverworld = 0;
+        private int logicalNether = 0;
+        private int logicalEnd = 0;
+
+        public Stream<IrisDimension> merge(IrisData data) {
+            Iris.verbose("Checking Pack: " + data.getDataFolder().getPath());
+            var loader = data.getDimensionLoader();
+            return loader.loadAll(loader.getPossibleKeys())
+                    .stream()
+                    .peek(this::merge);
+        }
+
+        public void merge(IrisDimension dimension) {
+            overworld.merge(dimension.getDimensionHeight());
+            nether.merge(dimension.getDimensionHeight());
+            end.merge(dimension.getDimensionHeight());
+
+            logicalOverworld = Math.max(logicalOverworld, dimension.getLogicalHeight());
+            logicalNether = Math.max(logicalNether, dimension.getLogicalHeightNether());
+            logicalEnd = Math.max(logicalEnd, dimension.getLogicalHeightEnd());
+        }
+
+        public String overworldType() {
+            return fixer.createDimension(OVERRWORLD, overworld, logicalOverworld).toString(4);
+        }
+
+        public String netherType() {
+            return fixer.createDimension(NETHER, nether, logicalNether).toString(4);
+        }
+
+        public String endType() {
+            return fixer.createDimension(THE_END, end, logicalEnd).toString(4);
+        }
+    }
 }

core/src/main/java/com/volmit/iris/core/commands/CommandIris.java

@@ -21,6 +21,7 @@ package com.volmit.iris.core.commands;
 import com.volmit.iris.Iris;
 import com.volmit.iris.core.IrisSettings;
 import com.volmit.iris.core.loader.IrisData;
+import com.volmit.iris.core.nms.INMS;
 import com.volmit.iris.core.pregenerator.ChunkUpdater;
 import com.volmit.iris.core.service.StudioSVC;
 import com.volmit.iris.core.tools.IrisBenchmarking;
@@ -265,6 +266,17 @@ public class CommandIris implements DecreeExecutor {
             return;
         }
         sender().sendMessage(C.GREEN + "Removing world: " + world.getName());
+
+        if (!IrisToolbelt.evacuate(world)) {
+            sender().sendMessage(C.RED + "Failed to evacuate world: " + world.getName());
+            return;
+        }
+
+        if (!Bukkit.unloadWorld(world, false)) {
+            sender().sendMessage(C.RED + "Failed to unload world: " + world.getName());
+            return;
+        }
+
         try {
             if (IrisToolbelt.removeWorld(world)) {
                 sender().sendMessage(C.GREEN + "Successfully removed " + world.getName() + " from bukkit.yml");
@@ -277,27 +289,32 @@ public class CommandIris implements DecreeExecutor {
         }
         IrisToolbelt.evacuate(world, "Deleting world");
         deletingWorld = true;
-        Bukkit.unloadWorld(world, false);
+        if (!delete) {
-        int retries = 12;
+            deletingWorld = false;
-        if (delete) {
+            return;
+        }
+        VolmitSender sender = sender();
+        J.a(() -> {
+            int retries = 12;
+
             if (deleteDirectory(world.getWorldFolder())) {
-                sender().sendMessage(C.GREEN + "Successfully removed world folder");
+                sender.sendMessage(C.GREEN + "Successfully removed world folder");
             } else {
                 while(true){
                     if (deleteDirectory(world.getWorldFolder())){
-                        sender().sendMessage(C.GREEN + "Successfully removed world folder");
+                        sender.sendMessage(C.GREEN + "Successfully removed world folder");
                         break;
                     }
                     retries--;
                     if (retries == 0){
-                        sender().sendMessage(C.RED + "Failed to remove world folder");
+                        sender.sendMessage(C.RED + "Failed to remove world folder");
                         break;
                     }
                     J.sleep(3000);
                 }
             }
-        }
+            deletingWorld = false;
-        deletingWorld = false;
+        });
     }
 
     public static boolean deleteDirectory(File dir) {
@@ -396,7 +413,7 @@ public class CommandIris implements DecreeExecutor {
     ) {
         sender().sendMessage(C.GREEN + "Downloading pack: " + pack + "/" + branch + (trim ? " trimmed" : "") + (overwrite ? " overwriting" : ""));
         if (pack.equals("overworld")) {
-            String url = "https://github.com/IrisDimensions/overworld/releases/download/" + Iris.OVERWORLD_TAG + "/overworld.zip";
+            String url = "https://github.com/IrisDimensions/overworld/releases/download/" + INMS.OVERWORLD_TAG + "/overworld.zip";
             Iris.service(StudioSVC.class).downloadRelease(sender(), url, trim, overwrite);
         } else {
             Iris.service(StudioSVC.class).downloadSearch(sender(), "IrisDimensions/" + pack + "/" + branch, trim, overwrite);
@@ -582,10 +599,10 @@ public class CommandIris implements DecreeExecutor {
                     continue;
                 }
                 Iris.info(C.LIGHT_PURPLE + "Preparing Spawn for " + s + "' using Iris:" + generator + "...");
-                new WorldCreator(s)
+                WorldCreator c = new WorldCreator(s)
                         .generator(getDefaultWorldGenerator(s, generator))
-                        .environment(IrisData.loadAnyDimension(generator).getEnvironment())
+                        .environment(IrisData.loadAnyDimension(generator).getEnvironment());
-                        .createWorld();
+                INMS.get().createWorld(c);
                 Iris.info(C.LIGHT_PURPLE + "Loaded " + s + "!");
             }
         } catch (Throwable e) {

core/src/main/java/com/volmit/iris/core/commands/CommandObject.java

@@ -28,6 +28,7 @@ import com.volmit.iris.core.tools.IrisConverter;
 import com.volmit.iris.engine.framework.Engine;
 import com.volmit.iris.engine.object.*;
 import com.volmit.iris.util.data.Cuboid;
+import com.volmit.iris.util.data.IrisCustomData;
 import com.volmit.iris.util.data.registry.Materials;
 import com.volmit.iris.util.decree.DecreeExecutor;
 import com.volmit.iris.util.decree.DecreeOrigin;
@@ -77,7 +78,10 @@ public class CommandObject implements DecreeExecutor {
 
                 futureBlockChanges.put(block, block.getBlockData());
 
-                block.setBlockData(d);
+                if (d instanceof IrisCustomData data) {
+                    block.setBlockData(data.getBase());
+                    Iris.warn("Tried to place custom block at " + x + ", " + y + ", " + z + " which is not supported!");
+                } else block.setBlockData(d);
             }
 
             @Override

core/src/main/java/com/volmit/iris/core/link/ExternalDataProvider.java

@@ -2,7 +2,7 @@ package com.volmit.iris.core.link;
 
 import com.volmit.iris.engine.framework.Engine;
 import com.volmit.iris.util.collection.KMap;
-import com.volmit.iris.util.data.IrisBlockData;
+import com.volmit.iris.util.data.IrisCustomData;
 import lombok.Getter;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
@@ -49,7 +49,7 @@ public abstract class ExternalDataProvider {
      * @param blockId The id of the block to get
      * @param state The state of the block to get
      * @return Corresponding {@link BlockData} to the blockId
-     *         may return {@link IrisBlockData} for blocks that need a world for placement
+     *         may return {@link IrisCustomData} for blocks that need a world for placement
      * @throws MissingResourceException when the blockId is invalid
      */
     @NotNull
@@ -77,7 +77,7 @@ public abstract class ExternalDataProvider {
 
     /**
      * This method is used for placing blocks that need to use the plugins api
-     * it will only be called when the {@link ExternalDataProvider#getBlockData(Identifier, KMap)} returned a {@link IrisBlockData}
+     * it will only be called when the {@link ExternalDataProvider#getBlockData(Identifier, KMap)} returned a {@link IrisCustomData}
      *
      * @param engine The engine of the world the block is being placed in
      * @param block The block where the block should be placed

core/src/main/java/com/volmit/iris/core/link/HMCLeavesDataProvider.java

@@ -6,7 +6,7 @@ import com.volmit.iris.core.service.ExternalDataSVC;
 import com.volmit.iris.engine.framework.Engine;
 import com.volmit.iris.util.collection.KList;
 import com.volmit.iris.util.collection.KMap;
-import com.volmit.iris.util.data.IrisBlockData;
+import com.volmit.iris.util.data.IrisCustomData;
 import com.volmit.iris.util.reflect.WrappedField;
 import com.volmit.iris.util.reflect.WrappedReturningMethod;
 import org.bukkit.Bukkit;
@@ -64,7 +64,7 @@ public class HMCLeavesDataProvider extends ExternalDataProvider {
 		BlockData blockData = Bukkit.createBlockData(material);
 		if (IrisSettings.get().getGenerator().preventLeafDecay && blockData instanceof Leaves leaves)
 			leaves.setPersistent(true);
-		return new IrisBlockData(blockData, ExternalDataSVC.buildState(blockId, state));
+		return new IrisCustomData(blockData, ExternalDataSVC.buildState(blockId, state));
 	}
 
 	@NotNull

core/src/main/java/com/volmit/iris/core/link/MythicCrucibleDataProvider.java

@@ -27,7 +27,7 @@ import com.volmit.iris.engine.framework.Engine;
 import com.volmit.iris.util.collection.KList;
 import com.volmit.iris.util.collection.KMap;
 import com.volmit.iris.util.data.B;
-import com.volmit.iris.util.data.IrisBlockData;
+import com.volmit.iris.util.data.IrisCustomData;
 import com.volmit.iris.util.math.RNG;
 import io.lumine.mythic.bukkit.BukkitAdapter;
 import io.lumine.mythic.bukkit.utils.serialize.Chroma;
@@ -71,7 +71,7 @@ public class MythicCrucibleDataProvider extends ExternalDataProvider {
         CustomBlockItemContext blockItemContext = crucibleItem.getBlockData();
         FurnitureItemContext furnitureItemContext = crucibleItem.getFurnitureData();
         if (furnitureItemContext != null) {
-            return new IrisBlockData(B.getAir(), ExternalDataSVC.buildState(blockId, state));
+            return new IrisCustomData(B.getAir(), ExternalDataSVC.buildState(blockId, state));
         } else if (blockItemContext != null) {
             return blockItemContext.getBlockData();
         }

core/src/main/java/com/volmit/iris/core/link/NexoDataProvider.java

@@ -11,7 +11,7 @@ import com.volmit.iris.engine.data.cache.Cache;
 import com.volmit.iris.engine.framework.Engine;
 import com.volmit.iris.util.collection.KMap;
 import com.volmit.iris.util.data.B;
-import com.volmit.iris.util.data.IrisBlockData;
+import com.volmit.iris.util.data.IrisCustomData;
 import com.volmit.iris.util.math.RNG;
 import org.bukkit.Color;
 import org.bukkit.block.Block;
@@ -49,9 +49,9 @@ public class NexoDataProvider extends ExternalDataProvider {
             BlockData data = NexoBlocks.blockData(blockId.key());
             if (data == null)
                 throw new MissingResourceException("Failed to find BlockData!", blockId.namespace(), blockId.key());
-            return new IrisBlockData(data, blockState);
+            return new IrisCustomData(data, blockState);
         } else if (NexoFurniture.isFurniture(blockId.key())) {
-            return new IrisBlockData(B.getAir(), blockState);
+            return new IrisCustomData(B.getAir(), blockState);
         }
 
         throw new MissingResourceException("Failed to find BlockData!", blockId.namespace(), blockId.key());
@@ -125,7 +125,7 @@ public class NexoDataProvider extends ExternalDataProvider {
     @NotNull
     @Override
     public Identifier[] getBlockTypes() {
-        return Arrays.stream(NexoItems.itemNames())
+        return NexoItems.itemNames().stream()
                 .map(i -> new Identifier("nexo", i))
                 .filter(i -> {
                     try {
@@ -140,7 +140,7 @@ public class NexoDataProvider extends ExternalDataProvider {
     @NotNull
     @Override
     public Identifier[] getItemTypes() {
-        return Arrays.stream(NexoItems.itemNames())
+        return NexoItems.itemNames().stream()
                 .map(i -> new Identifier("nexo", i))
                 .filter(i -> {
                     try {

core/src/main/java/com/volmit/iris/core/nms/INMS.java

@@ -23,6 +23,7 @@ import com.volmit.iris.core.IrisSettings;
 import com.volmit.iris.core.nms.v1X.NMSBinding1X;
 import org.bukkit.Bukkit;
 
+import java.util.List;
 import java.util.Map;
 
 public class INMS {
@@ -35,8 +36,15 @@ public class INMS {
             "1.21.3", "v1_21_R2",
             "1.21.4", "v1_21_R3"
     );
+    private static final List<Version> PACKS = List.of(
+            new Version(21, 4, "31010"),
+            new Version(21, 2, "31000"),
+            new Version(20, 1, "3910")
+    );
+
     //@done
     private static final INMSBinding binding = bind();
+    public static final String OVERWORLD_TAG = getOverworldTag();
 
     public static INMSBinding get() {
         return binding;
@@ -87,4 +95,26 @@ public class INMS {
 
         return new NMSBinding1X();
     }
+
+    private static String getOverworldTag() {
+        var version = Bukkit.getServer().getBukkitVersion().split("-")[0].split("\\.", 3);
+        int major = 0;
+        int minor = 0;
+
+        if (version.length > 2) {
+            major = Integer.parseInt(version[1]);
+            minor = Integer.parseInt(version[2]);
+        } else if (version.length == 2) {
+            major = Integer.parseInt(version[1]);
+        }
+
+        for (var p : PACKS) {
+            if (p.major > major || p.minor > minor)
+                continue;
+            return p.tag;
+        }
+        return "3910";
+    }
+
+    private record Version(int major, int minor, String tag) {}
 }

core/src/main/java/com/volmit/iris/core/nms/INMSBinding.java

@@ -18,7 +18,9 @@
 
 package com.volmit.iris.core.nms;
 
+import com.volmit.iris.core.nms.container.AutoClosing;
 import com.volmit.iris.core.nms.container.BiomeColor;
+import com.volmit.iris.core.nms.container.Pair;
 import com.volmit.iris.core.nms.datapack.DataVersion;
 import com.volmit.iris.engine.framework.Engine;
 import com.volmit.iris.util.collection.KList;
@@ -91,7 +93,9 @@ public interface INMSBinding {
     MCABiomeContainer newBiomeContainer(int min, int max);
 
     default World createWorld(WorldCreator c) {
-        return c.createWorld();
+        try (var ignored = injectLevelStems()) {
+            return c.createWorld();
+        }
     }
 
     int countCustomBiomes();
@@ -125,4 +129,12 @@ public interface INMSBinding {
     }
 
     KList<String> getStructureKeys();
+
+    default AutoClosing injectLevelStems() {
+        return new AutoClosing(() -> {});
+    }
+
+    default Pair<Integer, AutoClosing> injectUncached(boolean overworld, boolean nether, boolean end) {
+        return new Pair<>(0, injectLevelStems());
+    }
 }

core/src/main/java/com/volmit/iris/core/nms/container/AutoClosing.java

@@ -0,0 +1,22 @@
+package com.volmit.iris.core.nms.container;
+
+import com.volmit.iris.util.function.NastyRunnable;
+import lombok.AllArgsConstructor;
+
+import java.util.concurrent.atomic.AtomicBoolean;
+
+@AllArgsConstructor
+public class AutoClosing implements AutoCloseable {
+    private final AtomicBoolean closed = new AtomicBoolean();
+    private final NastyRunnable action;
+
+    @Override
+    public void close() {
+        if (closed.getAndSet(true)) return;
+        try {
+            action.run();
+        } catch (Throwable e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

core/src/main/java/com/volmit/iris/core/nms/datapack/IDataFixer.java

@@ -1,11 +1,28 @@
 package com.volmit.iris.core.nms.datapack;
 
 import com.volmit.iris.engine.object.IrisBiomeCustom;
+import com.volmit.iris.engine.object.IrisRange;
 import com.volmit.iris.util.json.JSONObject;
 
 public interface IDataFixer {
 
-    JSONObject fixCustomBiome(IrisBiomeCustom biome, JSONObject json);
+    default JSONObject fixCustomBiome(IrisBiomeCustom biome, JSONObject json) {
+        return json;
+    }
 
-    JSONObject fixDimension(JSONObject json);
+    JSONObject rawDimension(Dimension dimension);
+
+    default JSONObject createDimension(Dimension dimension, IrisRange height, int logicalHeight) {
+        JSONObject obj = rawDimension(dimension);
+        obj.put("min_y", height.getMin());
+        obj.put("height", height.getMax() - height.getMin());
+        obj.put("logical_height", logicalHeight);
+        return obj;
+    }
+
+    enum Dimension {
+        OVERRWORLD,
+        NETHER,
+        THE_END
+    }
 }

core/src/main/java/com/volmit/iris/core/nms/datapack/v1192/DataFixerV1192.java

@@ -1,18 +1,81 @@
 package com.volmit.iris.core.nms.datapack.v1192;
 
 import com.volmit.iris.core.nms.datapack.IDataFixer;
-import com.volmit.iris.engine.object.IrisBiomeCustom;
 import com.volmit.iris.util.json.JSONObject;
+import java.util.Map;
 
 public class DataFixerV1192 implements IDataFixer {
 
-    @Override
+    private static final Map<Dimension, String> DIMENSIONS = Map.of(
-    public JSONObject fixCustomBiome(IrisBiomeCustom biome, JSONObject json) {
+            Dimension.OVERRWORLD, """
-        return json;
+            {
-    }
+              "ambient_light": 0.0,
+              "bed_works": true,
+              "coordinate_scale": 1.0,
+              "effects": "minecraft:overworld",
+              "has_ceiling": false,
+              "has_raids": true,
+              "has_skylight": true,
+              "infiniburn": "#minecraft:infiniburn_overworld",
+              "monster_spawn_block_light_limit": 0,
+              "monster_spawn_light_level": {
+                "type": "minecraft:uniform",
+                "value": {
+                  "max_inclusive": 7,
+                  "min_inclusive": 0
+                }
+              },
+              "natural": true,
+              "piglin_safe": false,
+              "respawn_anchor_works": false,
+              "ultrawarm": false
+            }""",
+            Dimension.NETHER, """
+            {
+              "ambient_light": 0.1,
+              "bed_works": false,
+              "coordinate_scale": 8.0,
+              "effects": "minecraft:the_nether",
+              "fixed_time": 18000,
+              "has_ceiling": true,
+              "has_raids": false,
+              "has_skylight": false,
+              "infiniburn": "#minecraft:infiniburn_nether",
+              "monster_spawn_block_light_limit": 15,
+              "monster_spawn_light_level": 7,
+              "natural": false,
+              "piglin_safe": true,
+              "respawn_anchor_works": true,
+              "ultrawarm": true
+            }""",
+            Dimension.THE_END, """
+            {
+              "ambient_light": 0.0,
+              "bed_works": false,
+              "coordinate_scale": 1.0,
+              "effects": "minecraft:the_end",
+              "fixed_time": 6000,
+              "has_ceiling": false,
+              "has_raids": true,
+              "has_skylight": false,
+              "infiniburn": "#minecraft:infiniburn_end",
+              "monster_spawn_block_light_limit": 0,
+              "monster_spawn_light_level": {
+                "type": "minecraft:uniform",
+                "value": {
+                  "max_inclusive": 7,
+                  "min_inclusive": 0
+                }
+              },
+              "natural": false,
+              "piglin_safe": false,
+              "respawn_anchor_works": false,
+              "ultrawarm": false
+            }"""
+    );
 
     @Override
-    public JSONObject fixDimension(JSONObject json) {
+    public JSONObject rawDimension(Dimension dimension) {
-        return json;
+        return new JSONObject(DIMENSIONS.get(dimension));
     }
 }

core/src/main/java/com/volmit/iris/core/nms/datapack/v1206/DataFixerV1206.java

@@ -1,6 +1,6 @@
 package com.volmit.iris.core.nms.datapack.v1206;
 
-import com.volmit.iris.core.nms.datapack.IDataFixer;
+import com.volmit.iris.core.nms.datapack.v1192.DataFixerV1192;
 import com.volmit.iris.engine.object.IrisBiomeCustom;
 import com.volmit.iris.engine.object.IrisBiomeCustomSpawn;
 import com.volmit.iris.engine.object.IrisBiomeCustomSpawnType;
@@ -10,7 +10,7 @@ import com.volmit.iris.util.json.JSONObject;
 
 import java.util.Locale;
 
-public class DataFixerV1206 implements IDataFixer {
+public class DataFixerV1206 extends DataFixerV1192 {
     @Override
     public JSONObject fixCustomBiome(IrisBiomeCustom biome, JSONObject json) {
         int spawnRarity = biome.getSpawnRarity();
@@ -45,7 +45,8 @@ public class DataFixerV1206 implements IDataFixer {
     }
 
     @Override
-    public JSONObject fixDimension(JSONObject json) {
+    public JSONObject rawDimension(Dimension dimension) {
+        JSONObject json = super.rawDimension(dimension);
         if (!(json.get("monster_spawn_light_level") instanceof JSONObject lightLevel))
             return json;
         var value = (JSONObject) lightLevel.remove("value");

core/src/main/java/com/volmit/iris/core/safeguard/UtilsSFG.java

@@ -37,7 +37,7 @@ public class UtilsSFG {
             }
             if (ServerBootSFG.unsuportedversion) {
                 Iris.safeguard(C.RED + "Server Version");
-                Iris.safeguard(C.RED + "- Iris only supports 1.19.2 > 1.21.3");
+                Iris.safeguard(C.RED + "- Iris only supports 1.20.1 > 1.21.4");
             }
             if (!ServerBootSFG.passedserversoftware) {
                 Iris.safeguard(C.YELLOW + "Unsupported Server Software");

core/src/main/java/com/volmit/iris/core/service/StudioSVC.java

@@ -24,6 +24,7 @@ import com.volmit.iris.Iris;
 import com.volmit.iris.core.IrisSettings;
 import com.volmit.iris.core.ServerConfigurator;
 import com.volmit.iris.core.loader.IrisData;
+import com.volmit.iris.core.nms.INMS;
 import com.volmit.iris.core.pack.IrisPack;
 import com.volmit.iris.core.project.IrisProject;
 import com.volmit.iris.core.tools.IrisToolbelt;
@@ -64,7 +65,7 @@ public class StudioSVC implements IrisService {
             if (!f.exists()) {
                 Iris.info("Downloading Default Pack " + pack);
                 if (pack.equals("overworld")) {
-                    String url = "https://github.com/IrisDimensions/overworld/releases/download/" + Iris.OVERWORLD_TAG + "/overworld.zip";
+                    String url = "https://github.com/IrisDimensions/overworld/releases/download/" + INMS.OVERWORLD_TAG + "/overworld.zip";
                     Iris.service(StudioSVC.class).downloadRelease(Iris.getSender(), url, false, false);
                 } else {
                     downloadSearch(Iris.getSender(), pack, false);

core/src/main/java/com/volmit/iris/core/service/TreeSVC.java

@@ -27,6 +27,7 @@ import com.volmit.iris.engine.platform.PlatformChunkGenerator;
 import com.volmit.iris.util.collection.KList;
 import com.volmit.iris.util.collection.KMap;
 import com.volmit.iris.util.data.Cuboid;
+import com.volmit.iris.util.data.IrisCustomData;
 import com.volmit.iris.util.math.BlockPosition;
 import com.volmit.iris.util.math.RNG;
 import com.volmit.iris.util.plugin.IrisService;
@@ -34,7 +35,6 @@ import com.volmit.iris.util.scheduling.J;
 import org.bukkit.*;
 import org.bukkit.block.Block;
 import org.bukkit.block.BlockState;
-import org.bukkit.block.TileState;
 import org.bukkit.block.data.BlockData;
 import org.bukkit.block.data.type.Sapling;
 import org.bukkit.event.EventHandler;
@@ -142,7 +142,9 @@ public class TreeSVC implements IrisService {
             public void set(int x, int y, int z, BlockData d) {
                 Block b = event.getWorld().getBlockAt(x, y, z);
                 BlockState state = b.getState();
-                state.setBlockData(d);
+                if (d instanceof IrisCustomData data)
+                    state.setBlockData(data.getBase());
+                else state.setBlockData(d);
                 blockStateList.add(b.getState());
                 dataCache.put(new Location(event.getWorld(), x, y, z), d);
             }
@@ -213,12 +215,17 @@ public class TreeSVC implements IrisService {
             block = false;
 
             if (!iGrow.isCancelled()) {
-                for (BlockState block : iGrow.getBlocks()) {
+                for (BlockState state : iGrow.getBlocks()) {
-                    Location l = block.getLocation();
+                    Location l = state.getLocation();
 
-                    if (dataCache.containsKey(l)) {
+                    BlockData d = dataCache.get(l);
-                        l.getBlock().setBlockData(dataCache.get(l), false);
+                    if (d == null) continue;
-                    }
+                    Block block = l.getBlock();
+
+                    if (d instanceof IrisCustomData data) {
+                        block.setBlockData(data.getBase(), false);
+                        Iris.service(ExternalDataSVC.class).processUpdate(engine, block, data.getCustom());
+                    } else block.setBlockData(d);
                 }
             }
         });

core/src/main/java/com/volmit/iris/core/tools/IrisCreator.java

@@ -22,6 +22,7 @@ import com.google.common.util.concurrent.AtomicDouble;
 import com.volmit.iris.Iris;
 import com.volmit.iris.core.IrisSettings;
 import com.volmit.iris.core.ServerConfigurator;
+import com.volmit.iris.core.nms.INMS;
 import com.volmit.iris.core.pregenerator.PregenTask;
 import com.volmit.iris.core.service.StudioSVC;
 import com.volmit.iris.engine.object.IrisDimension;
@@ -170,7 +171,7 @@ public class IrisCreator {
 
         try {
             J.sfut(() -> {
-                world.set(wc.createWorld());
+                world.set(INMS.get().createWorld(wc));
             }).get();
         } catch (Throwable e) {
             e.printStackTrace();

core/src/main/java/com/volmit/iris/core/tools/IrisWorldCreator.java

@@ -21,10 +21,13 @@ package com.volmit.iris.core.tools;
 import com.volmit.iris.core.loader.IrisData;
 import com.volmit.iris.engine.object.*;
 import com.volmit.iris.engine.platform.BukkitChunkGenerator;
+import com.volmit.iris.util.reflect.WrappedField;
 import org.bukkit.Bukkit;
 import org.bukkit.World;
 import org.bukkit.WorldCreator;
+import org.bukkit.WorldType;
 import org.bukkit.generator.ChunkGenerator;
+import sun.misc.Unsafe;
 
 import java.io.File;
 

core/src/main/java/com/volmit/iris/engine/IrisWorldManager.java

@@ -62,6 +62,7 @@ import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
 import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.function.Predicate;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
@@ -299,28 +300,6 @@ public class IrisWorldManager extends EngineAssignedWorldManager {
             energy += 1.2;
         }
 
-        //@builder
-        IrisBiome biome = IrisSettings.get().getWorld().isAnbientEntitySpawningSystem()
-                ? getEngine().getSurfaceBiome(c) : null;
-        IrisEntitySpawn v = IrisSettings.get().getWorld().isAnbientEntitySpawningSystem()
-                ? spawnRandomly(Stream.concat(getData().getSpawnerLoader()
-                                .loadAll(getDimension().getEntitySpawners())
-                                .shuffleCopy(RNG.r).stream()
-                                .filter(this::canSpawn)
-                                .filter((i) -> i.isValid(biome))
-                                .flatMap((i) -> stream(i, initial)),
-                        Stream.concat(getData().getSpawnerLoader()
-                                        .loadAll(getEngine().getRegion(c.getX() << 4, c.getZ() << 4).getEntitySpawners())
-                                        .shuffleCopy(RNG.r).stream().filter(this::canSpawn)
-                                        .flatMap((i) -> stream(i, initial)),
-                                getData().getSpawnerLoader()
-                                        .loadAll(getEngine().getSurfaceBiome(c.getX() << 4, c.getZ() << 4).getEntitySpawners())
-                                        .shuffleCopy(RNG.r).stream().filter(this::canSpawn)
-                                        .flatMap((i) -> stream(i, initial))))
-                .collect(Collectors.toList()))
-                .popRandom(RNG.r) : null;
-        //@done
-
         if (IrisSettings.get().getWorld().isMarkerEntitySpawningSystem()) {
             getSpawnersFromMarkers(c).forEach((blockf, spawners) -> {
                 if (spawners.isEmpty()) {
@@ -335,94 +314,67 @@ public class IrisWorldManager extends EngineAssignedWorldManager {
             });
         }
 
-        if (v != null && v.getReferenceSpawner() != null) {
+        if (!IrisSettings.get().getWorld().isAnbientEntitySpawningSystem()) {
-            int maxEntCount = v.getReferenceSpawner().getMaxEntitiesPerChunk();
+            return;
+        }
 
-            for (Entity i : c.getEntities()) {
+        //@builder
-                if (i instanceof LivingEntity) {
+        Predicate<IrisSpawner> filter = i -> i.canSpawn(getEngine(), c.getX(), c.getZ());
-                    if (-maxEntCount <= 0) {
+        ChunkCounter counter = new ChunkCounter(c.getEntities());
-                        return;
-                    }
-                }
-            }
 
-            try {
+        IrisBiome biome = getEngine().getSurfaceBiome(c);
-                spawn(c, v);
+        IrisEntitySpawn v = spawnRandomly(Stream.concat(getData().getSpawnerLoader()
-            } catch (Throwable e) {
+                                .loadAll(getDimension().getEntitySpawners())
-                J.s(() -> spawn(c, v));
+                                .shuffleCopy(RNG.r)
-            }
+                                .stream()
+                                .filter(filter)
+                                .filter((i) -> i.isValid(biome)),
+                        Stream.concat(getData()
+                                        .getSpawnerLoader()
+                                        .loadAll(getEngine().getRegion(c.getX() << 4, c.getZ() << 4).getEntitySpawners())
+                                        .shuffleCopy(RNG.r)
+                                        .stream()
+                                        .filter(filter),
+                                getData().getSpawnerLoader()
+                                        .loadAll(getEngine().getSurfaceBiome(c.getX() << 4, c.getZ() << 4).getEntitySpawners())
+                                        .shuffleCopy(RNG.r)
+                                        .stream()
+                                        .filter(filter)))
+                .filter(counter)
+                .flatMap((i) -> stream(i, initial))
+                .collect(Collectors.toList()))
+                .getRandom();
+        //@done
+        if (v == null || v.getReferenceSpawner() == null)
+            return;
+
+        try {
+            spawn(c, v);
+        } catch (Throwable e) {
+            J.s(() -> spawn(c, v));
         }
     }
 
     private void spawn(Chunk c, IrisEntitySpawn i) {
-        boolean allow = true;
+        IrisSpawner ref = i.getReferenceSpawner();
-
+        int s = i.spawn(getEngine(), c, RNG.r);
-        if (!i.getReferenceSpawner().getMaximumRatePerChunk().isInfinite()) {
+        actuallySpawned += s;
-            allow = false;
+        if (s > 0) {
-            IrisEngineChunkData cd = getEngine().getEngineData().getChunk(c.getX(), c.getZ());
+            ref.spawn(getEngine(), c.getX(), c.getZ());
-            IrisEngineSpawnerCooldown sc = null;
+            energy -= s * ((i.getEnergyMultiplier() * ref.getEnergyMultiplier() * 1));
-            for (IrisEngineSpawnerCooldown j : cd.getCooldowns()) {
-                if (j.getSpawner().equals(i.getReferenceSpawner().getLoadKey())) {
-                    sc = j;
-                    break;
-                }
-            }
-
-            if (sc == null) {
-                sc = new IrisEngineSpawnerCooldown();
-                sc.setSpawner(i.getReferenceSpawner().getLoadKey());
-                cd.getCooldowns().add(sc);
-            }
-
-            if (sc.canSpawn(i.getReferenceSpawner().getMaximumRatePerChunk())) {
-                sc.spawn(getEngine());
-                allow = true;
-            }
-        }
-
-        if (allow) {
-            int s = i.spawn(getEngine(), c, RNG.r);
-            actuallySpawned += s;
-            if (s > 0) {
-                getCooldown(i.getReferenceSpawner()).spawn(getEngine());
-                energy -= s * ((i.getEnergyMultiplier() * i.getReferenceSpawner().getEnergyMultiplier() * 1));
-            }
         }
     }
 
-    private void spawn(IrisPosition c, IrisEntitySpawn i) {
+    private void spawn(IrisPosition pos, IrisEntitySpawn i) {
-        boolean allow = true;
+        IrisSpawner ref = i.getReferenceSpawner();
+        if (!ref.canSpawn(getEngine(), pos.getX() >> 4, pos.getZ()))
+            return;
 
-        if (!i.getReferenceSpawner().getMaximumRatePerChunk().isInfinite()) {
+        int s = i.spawn(getEngine(), pos, RNG.r);
-            allow = false;
+        actuallySpawned += s;
-            IrisEngineChunkData cd = getEngine().getEngineData().getChunk(c.getX() >> 4, c.getZ() >> 4);
+        if (s > 0) {
-            IrisEngineSpawnerCooldown sc = null;
+            ref.spawn(getEngine(), pos.getX() >> 4, pos.getZ() >> 4);
-            for (IrisEngineSpawnerCooldown j : cd.getCooldowns()) {
+            energy -= s * ((i.getEnergyMultiplier() * ref.getEnergyMultiplier() * 1));
-                if (j.getSpawner().equals(i.getReferenceSpawner().getLoadKey())) {
-                    sc = j;
-                    break;
-                }
-            }
-
-            if (sc == null) {
-                sc = new IrisEngineSpawnerCooldown();
-                sc.setSpawner(i.getReferenceSpawner().getLoadKey());
-                cd.getCooldowns().add(sc);
-            }
-
-            if (sc.canSpawn(i.getReferenceSpawner().getMaximumRatePerChunk())) {
-                sc.spawn(getEngine());
-                allow = true;
-            }
-        }
-
-        if (allow) {
-            int s = i.spawn(getEngine(), c, RNG.r);
-            actuallySpawned += s;
-            if (s > 0) {
-                getCooldown(i.getReferenceSpawner()).spawn(getEngine());
-                energy -= s * ((i.getEnergyMultiplier() * i.getReferenceSpawner().getEnergyMultiplier() * 1));
-            }
         }
     }
 
@@ -450,31 +402,6 @@ public class IrisWorldManager extends EngineAssignedWorldManager {
         return rarityTypes;
     }
 
-    public boolean canSpawn(IrisSpawner i) {
-        return i.isValid(getEngine().getWorld().realWorld())
-                && getCooldown(i).canSpawn(i.getMaximumRate());
-    }
-
-    private IrisEngineSpawnerCooldown getCooldown(IrisSpawner i) {
-        IrisEngineData ed = getEngine().getEngineData();
-        IrisEngineSpawnerCooldown cd = null;
-
-        for (IrisEngineSpawnerCooldown j : ed.getSpawnerCooldowns().copy()) {
-            if (j.getSpawner().equals(i.getLoadKey())) {
-                cd = j;
-            }
-        }
-
-        if (cd == null) {
-            cd = new IrisEngineSpawnerCooldown();
-            cd.setSpawner(i.getLoadKey());
-            cd.setLastSpawn(M.ms() - i.getMaximumRate().getInterval());
-            ed.getSpawnerCooldowns().add(cd);
-        }
-
-        return cd;
-    }
-
     @Override
     public void onTick() {
 
@@ -708,4 +635,27 @@ public class IrisWorldManager extends EngineAssignedWorldManager {
 
         return (double) entityCount / (getEngine().getWorld().realWorld().getLoadedChunks().length + 1) * 1.28;
     }
+
+    @Data
+    private static class ChunkCounter implements Predicate<IrisSpawner> {
+        private final Entity[] entities;
+        private transient int index = 0;
+        private transient int count = 0;
+
+        @Override
+        public boolean test(IrisSpawner spawner) {
+            int max = spawner.getMaxEntitiesPerChunk();
+            if (max <= count)
+                return false;
+
+            while (index < entities.length) {
+                if (entities[index++] instanceof LivingEntity) {
+                    if (++count >= max)
+                        return false;
+                }
+            }
+
+            return true;
+        }
+    }
 }

core/src/main/java/com/volmit/iris/engine/data/chunk/LinkedTerrainChunk.java

@@ -21,7 +21,7 @@ package com.volmit.iris.engine.data.chunk;
 import com.volmit.iris.core.nms.BiomeBaseInjector;
 import com.volmit.iris.core.nms.INMS;
 import com.volmit.iris.util.data.IrisBiomeStorage;
-import com.volmit.iris.util.data.IrisBlockData;
+import com.volmit.iris.util.data.IrisCustomData;
 import lombok.Setter;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
@@ -121,7 +121,7 @@ public class LinkedTerrainChunk implements TerrainChunk {
 
     @Override
     public synchronized void setBlock(int x, int y, int z, BlockData blockData) {
-        if (blockData instanceof IrisBlockData d)
+        if (blockData instanceof IrisCustomData d)
             blockData = d.getBase();
         rawChunkData.setBlock(x, y, z, blockData);
     }

core/src/main/java/com/volmit/iris/engine/data/chunk/MCATerrainChunk.java

@@ -20,7 +20,7 @@ package com.volmit.iris.engine.data.chunk;
 
 import com.volmit.iris.Iris;
 import com.volmit.iris.core.nms.BiomeBaseInjector;
-import com.volmit.iris.util.data.IrisBlockData;
+import com.volmit.iris.util.data.IrisCustomData;
 import com.volmit.iris.util.nbt.mca.Chunk;
 import com.volmit.iris.util.nbt.mca.NBTWorld;
 import lombok.AllArgsConstructor;
@@ -89,7 +89,7 @@ public class MCATerrainChunk implements TerrainChunk {
         if (blockData == null) {
             Iris.error("NULL BD");
         }
-        if (blockData instanceof IrisBlockData data)
+        if (blockData instanceof IrisCustomData data)
             blockData = data.getBase();
 
         mcaChunk.setBlockStateAt(xx, y, zz, NBTWorld.getCompound(blockData), false);

core/src/main/java/com/volmit/iris/engine/framework/Engine.java

@@ -42,7 +42,7 @@ import com.volmit.iris.util.context.ChunkContext;
 import com.volmit.iris.util.context.IrisContext;
 import com.volmit.iris.util.data.B;
 import com.volmit.iris.util.data.DataProvider;
-import com.volmit.iris.util.data.IrisBlockData;
+import com.volmit.iris.util.data.IrisCustomData;
 import com.volmit.iris.util.documentation.BlockCoordinates;
 import com.volmit.iris.util.documentation.ChunkCoordinates;
 import com.volmit.iris.util.format.C;
@@ -259,10 +259,8 @@ public interface Engine extends DataProvider, Fallible, LootProvider, BlockUpdat
         if (B.isUpdatable(data)) {
             getMantle().updateBlock(x, y, z);
         }
-        if (data instanceof IrisBlockData d) {
+        if (data instanceof IrisCustomData) {
-            getMantle().getMantle().set(x, y, z, d.getCustom());
+            getMantle().getMantle().flag(x >> 4, z >> 4, MantleFlag.CUSTOM, true);
-        } else {
-            getMantle().getMantle().remove(x, y, z, Identifier.class);
         }
     }
 

core/src/main/java/com/volmit/iris/engine/framework/placer/WorldObjectPlacer.java

@@ -13,6 +13,7 @@ import com.volmit.iris.engine.object.IrisLootTable;
 import com.volmit.iris.engine.object.TileData;
 import com.volmit.iris.util.collection.KList;
 import com.volmit.iris.util.data.B;
+import com.volmit.iris.util.data.IrisCustomData;
 import com.volmit.iris.util.math.RNG;
 import lombok.EqualsAndHashCode;
 import lombok.Getter;
@@ -78,7 +79,11 @@ public class WorldObjectPlacer implements IObjectPlacer {
             }
         }
 
-        block.setBlockData(d);
+
+        if (d instanceof IrisCustomData data) {
+            block.setBlockData(data.getBase());
+            Iris.warn("Tried to place custom block at " + x + ", " + y + ", " + z + " which is not supported!");
+        } else block.setBlockData(d);
     }
 
     @Override

core/src/main/java/com/volmit/iris/engine/jigsaw/PlannedStructure.java

@@ -25,7 +25,6 @@ import com.volmit.iris.engine.framework.Engine;
 import com.volmit.iris.engine.framework.placer.WorldObjectPlacer;
 import com.volmit.iris.engine.object.*;
 import com.volmit.iris.util.collection.KList;
-import com.volmit.iris.util.data.IrisBlockData;
 import com.volmit.iris.util.mantle.Mantle;
 import com.volmit.iris.util.math.Position2;
 import com.volmit.iris.util.math.RNG;
@@ -155,9 +154,6 @@ public class PlannedStructure {
         return v.place(xx, height, zz, placer, options, rng, (b, data) -> {
             e.set(b.getX(), b.getY(), b.getZ(), v.getLoadKey() + "@" + id);
             e.set(b.getX(), b.getY(), b.getZ(), container);
-            if (data instanceof IrisBlockData d) {
-                e.set(b.getX(), b.getY(), b.getZ(), d.getCustom());
-            }
         }, null, getData().getEngine() != null ? getData() : eng.getData()) != -1;
     }
 

core/src/main/java/com/volmit/iris/engine/mantle/EngineMantle.java

@@ -34,6 +34,7 @@ import com.volmit.iris.util.collection.KList;
 import com.volmit.iris.util.context.ChunkContext;
 import com.volmit.iris.util.context.IrisContext;
 import com.volmit.iris.util.data.B;
+import com.volmit.iris.util.data.IrisCustomData;
 import com.volmit.iris.util.documentation.BlockCoordinates;
 import com.volmit.iris.util.documentation.ChunkCoordinates;
 import com.volmit.iris.util.hunk.Hunk;
@@ -104,7 +105,10 @@ public interface EngineMantle extends IObjectPlacer {
 
     @Override
     default void set(int x, int y, int z, BlockData d) {
-        getMantle().set(x, y, z, d == null ? AIR : d);
+        if (d instanceof IrisCustomData data) {
+            getMantle().set(x, y, z, data.getBase());
+            getMantle().set(x, y, z, data.getCustom());
+        } else getMantle().set(x, y, z, d == null ? AIR : d);
     }
 
     @Override

core/src/main/java/com/volmit/iris/engine/mantle/MantleWriter.java

@@ -29,6 +29,7 @@ import com.volmit.iris.engine.object.IrisPosition;
 import com.volmit.iris.engine.object.TileData;
 import com.volmit.iris.util.collection.KMap;
 import com.volmit.iris.util.collection.KSet;
+import com.volmit.iris.util.data.IrisCustomData;
 import com.volmit.iris.util.function.Function3;
 import com.volmit.iris.util.mantle.Mantle;
 import com.volmit.iris.util.mantle.MantleChunk;
@@ -166,7 +167,10 @@ public class MantleWriter implements IObjectPlacer, AutoCloseable {
 
     @Override
     public void set(int x, int y, int z, BlockData d) {
-        setData(x, y, z, d);
+        if (d instanceof IrisCustomData data) {
+            setData(x, y, z, data.getBase());
+            setData(x, y, z, data.getCustom());
+        } else setData(x, y, z, d);
     }
 
     @Override

core/src/main/java/com/volmit/iris/engine/mantle/components/MantleJigsawComponent.java

@@ -90,8 +90,10 @@ public class MantleJigsawComponent extends IrisMantleComponent {
     private boolean placeStructures(MantleWriter writer, long seed, int x, int z, KList<IrisJigsawStructurePlacement> structures,
             KSet<Position2> cachedRegions, KMap<String, KSet<Position2>> cache, KMap<Position2, Double> distanceCache) {
         IrisJigsawStructurePlacement i = pick(structures, seed, x, z);
-        if (i == null || checkMinDistances(i.collectMinDistances(), x, z, cachedRegions, cache, distanceCache))
+        try {
-            return false;
+            if (i == null || checkMinDistances(i.collectMinDistances(), x, z, cachedRegions, cache, distanceCache))
+                return false;
+        } catch (Throwable ignored) {}
         RNG rng = new RNG(seed);
         IrisPosition position = new IrisPosition((x << 4) + rng.nextInt(15), 0, (z << 4) + rng.nextInt(15));
         IrisJigsawStructure structure = getData().getJigsawStructureLoader().load(i.getStructure());
@@ -159,7 +161,7 @@ public class MantleJigsawComponent extends IrisMantleComponent {
     @ChunkCoordinates
     private IrisJigsawStructurePlacement pick(List<IrisJigsawStructurePlacement> structures, long seed, int x, int z) {
         return IRare.pick(structures.stream()
-                .filter(p -> p.shouldPlace(getDimension().getJigsawStructureDivisor(), jigsaw(), x, z))
+                .filter(p -> p.shouldPlace(getData(), getDimension().getJigsawStructureDivisor(), jigsaw(), x, z))
                 .toList(), new RNG(seed).nextDouble());
     }
 

core/src/main/java/com/volmit/iris/engine/mantle/components/MantleObjectComponent.java

@@ -29,7 +29,6 @@ import com.volmit.iris.util.collection.KMap;
 import com.volmit.iris.util.collection.KSet;
 import com.volmit.iris.util.context.ChunkContext;
 import com.volmit.iris.util.data.B;
-import com.volmit.iris.util.data.IrisBlockData;
 import com.volmit.iris.util.documentation.BlockCoordinates;
 import com.volmit.iris.util.documentation.ChunkCoordinates;
 import com.volmit.iris.util.format.Form;
@@ -116,9 +115,6 @@ public class MantleObjectComponent extends IrisMantleComponent {
                 if (objectPlacement.isDolphinTarget() && objectPlacement.isUnderwater() && B.isStorageChest(data)) {
                     writer.setData(b.getX(), b.getY(), b.getZ(), MatterStructurePOI.BURIED_TREASURE);
                 }
-                if (data instanceof IrisBlockData d) {
-                    writer.setData(b.getX(), b.getY(), b.getZ(), d.getCustom());
-                }
             }, null, getData());
         }
     }

core/src/main/java/com/volmit/iris/engine/mode/ModeOverworld.java

@@ -25,10 +25,7 @@ import com.volmit.iris.engine.framework.Engine;
 import com.volmit.iris.engine.framework.EngineMode;
 import com.volmit.iris.engine.framework.EngineStage;
 import com.volmit.iris.engine.framework.IrisEngineMode;
-import com.volmit.iris.engine.modifier.IrisCarveModifier;
+import com.volmit.iris.engine.modifier.*;
-import com.volmit.iris.engine.modifier.IrisDepositModifier;
-import com.volmit.iris.engine.modifier.IrisPerfectionModifier;
-import com.volmit.iris.engine.modifier.IrisPostModifier;
 import org.bukkit.block.data.BlockData;
 
 public class ModeOverworld extends IrisEngineMode implements EngineMode {
@@ -41,6 +38,7 @@ public class ModeOverworld extends IrisEngineMode implements EngineMode {
         var post = new IrisPostModifier(getEngine());
         var deposit = new IrisDepositModifier(getEngine());
         var perfection = new IrisPerfectionModifier(getEngine());
+        var custom = new IrisCustomModifier(getEngine());
         EngineStage sBiome = (x, z, k, p, m, c) -> biome.actuate(x, z, p, m, c);
         EngineStage sGenMatter = (x, z, k, p, m, c) -> generateMatter(x >> 4, z >> 4, m, c);
         EngineStage sTerrain = (x, z, k, p, m, c) -> terrain.actuate(x, z, k, m, c);
@@ -50,6 +48,7 @@ public class ModeOverworld extends IrisEngineMode implements EngineMode {
         EngineStage sPost = (x, z, k, p, m, c) -> post.modify(x, z, k, m, c);
         EngineStage sInsertMatter = (x, z, K, p, m, c) -> getMantle().insertMatter(x >> 4, z >> 4, BlockData.class, K, m);
         EngineStage sPerfection = (x, z, k, p, m, c) -> perfection.modify(x, z, k, m, c);
+        EngineStage sCustom = (x, z, k, p, m, c) -> custom.modify(x, z, k, m, c);
 
         registerStage(burst(
                 sGenMatter,
@@ -65,6 +64,6 @@ public class ModeOverworld extends IrisEngineMode implements EngineMode {
                 sDecorant
         ));
         registerStage(sPerfection);
-
+        registerStage(sCustom);
     }
 }

core/src/main/java/com/volmit/iris/engine/modifier/IrisCarveModifier.java

@@ -57,7 +57,7 @@ public class IrisCarveModifier extends EngineAssignedModifier<BlockData> {
     public void onModify(int x, int z, Hunk<BlockData> output, boolean multicore, ChunkContext context) {
         PrecisionStopwatch p = PrecisionStopwatch.start();
         Mantle mantle = getEngine().getMantle().getMantle();
-        MantleChunk mc = getEngine().getMantle().getMantle().getChunk(x, z);
+        MantleChunk mc = getEngine().getMantle().getMantle().getChunk(x, z).use();
         KMap<Long, KList<Integer>> positions = new KMap<>();
         KMap<IrisPosition, MatterCavern> walls = new KMap<>();
         Consumer4<Integer, Integer, Integer, MatterCavern> iterator = (xx, yy, zz, c) -> {
@@ -166,6 +166,7 @@ public class IrisCarveModifier extends EngineAssignedModifier<BlockData> {
         });
 
         getEngine().getMetrics().getDeposit().put(p.getMilliseconds());
+        mc.release();
     }
 
     private void processZone(Hunk<BlockData> output, MantleChunk mc, Mantle mantle, CaveZone zone, int rx, int rz, int xx, int zz) {

core/src/main/java/com/volmit/iris/engine/modifier/IrisCustomModifier.java

@@ -0,0 +1,43 @@
+package com.volmit.iris.engine.modifier;
+import com.volmit.iris.core.link.Identifier;
+import com.volmit.iris.engine.framework.Engine;
+import com.volmit.iris.engine.framework.EngineAssignedModifier;
+import com.volmit.iris.util.context.ChunkContext;
+import com.volmit.iris.util.data.IrisCustomData;
+import com.volmit.iris.util.hunk.Hunk;
+import com.volmit.iris.util.mantle.MantleFlag;
+import com.volmit.iris.util.parallel.BurstExecutor;
+import com.volmit.iris.util.parallel.MultiBurst;
+import org.bukkit.block.data.BlockData;
+public class IrisCustomModifier extends EngineAssignedModifier<BlockData> {
+    public IrisCustomModifier(Engine engine) {
+        super(engine, "Custom");
+    }
+    @Override
+    public void onModify(int x, int z, Hunk<BlockData> output, boolean multicore, ChunkContext context) {
+        var mc = getEngine().getMantle().getMantle().getChunk(x >> 4, z >> 4);
+        if (!mc.isFlagged(MantleFlag.CUSTOM_ACTIVE)) return;
+        mc.use();
+
+        BurstExecutor burst = MultiBurst.burst.burst(output.getHeight());
+        burst.setMulticore(multicore);
+        for (int y = 0; y < output.getHeight(); y++) {
+            int finalY = y;
+            burst.queue(() -> {
+                for (int rX = 0; rX < output.getWidth(); rX++) {
+                    for (int rZ = 0; rZ < output.getDepth(); rZ++) {
+                        BlockData b = output.get(rX, finalY, rZ);
+                        if (!(b instanceof IrisCustomData d)) continue;
+
+                        mc.getOrCreate(finalY >> 4)
+                                .slice(Identifier.class)
+                                .set(rX, finalY & 15, rZ, d.getCustom());
+                        output.set(rX, finalY, rZ, d.getBase());
+                    }
+                }
+            });
+        }
+        burst.complete();
+        mc.release();
+    }
+}

core/src/main/java/com/volmit/iris/engine/object/IrisContextInjector.java

@@ -0,0 +1,67 @@
+package com.volmit.iris.engine.object;
+
+import com.volmit.iris.core.nms.INMS;
+import com.volmit.iris.core.nms.container.AutoClosing;
+import com.volmit.iris.util.misc.ServerProperties;
+import org.bukkit.Bukkit;
+import org.bukkit.configuration.ConfigurationSection;
+import org.bukkit.configuration.file.YamlConfiguration;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.world.WorldInitEvent;
+
+import java.util.List;
+
+import static com.volmit.iris.Iris.instance;
+
+public class IrisContextInjector implements Listener {
+    private AutoClosing autoClosing = null;
+    private final int totalWorlds;
+    private int worldCounter = 0;
+
+    public IrisContextInjector() {
+        if (!Bukkit.getWorlds().isEmpty()) {
+            totalWorlds = 0;
+            return;
+        }
+
+        String levelName = ServerProperties.LEVEL_NAME;
+        List<String> irisWorlds = irisWorlds();
+        boolean overworld = irisWorlds.contains(levelName);
+        boolean nether = irisWorlds.contains(levelName + "_nether");
+        boolean end = irisWorlds.contains(levelName + "_end");
+
+        int i = 1;
+        if (Bukkit.getAllowNether()) i++;
+        if (Bukkit.getAllowEnd()) i++;
+
+        if (overworld || nether || end) {
+            var pair = INMS.get().injectUncached(overworld, nether, end);
+            i += pair.getA() - 3;
+            autoClosing = pair.getB();
+        }
+
+        totalWorlds = i;
+    }
+
+    @EventHandler
+    public void on(WorldInitEvent event) {
+        if (++worldCounter < totalWorlds) return;
+        if (autoClosing != null) {
+            autoClosing.close();
+            autoClosing = null;
+        }
+        instance.unregisterListener(this);
+    }
+
+    private List<String> irisWorlds() {
+        var config = YamlConfiguration.loadConfiguration(ServerProperties.BUKKIT_YML);
+        ConfigurationSection section = config.getConfigurationSection("worlds");
+        if (section == null) return List.of();
+
+        return section.getKeys(false)
+                .stream()
+                .filter(k -> section.getString(k + ".generator", "").startsWith("Iris"))
+                .toList();
+    }
+}

core/src/main/java/com/volmit/iris/engine/object/IrisDimension.java

@@ -19,6 +19,8 @@
 package com.volmit.iris.engine.object;
 
 import com.volmit.iris.Iris;
+import com.volmit.iris.core.IrisSettings;
+import com.volmit.iris.core.ServerConfigurator.DimensionHeight;
 import com.volmit.iris.core.loader.IrisData;
 import com.volmit.iris.core.loader.IrisRegistrant;
 import com.volmit.iris.core.nms.INMS;
@@ -26,6 +28,7 @@ import com.volmit.iris.core.nms.datapack.IDataFixer;
 import com.volmit.iris.engine.data.cache.AtomicCache;
 import com.volmit.iris.engine.object.annotations.*;
 import com.volmit.iris.util.collection.KList;
+import com.volmit.iris.util.collection.KSet;
 import com.volmit.iris.util.data.DataProvider;
 import com.volmit.iris.util.io.IO;
 import com.volmit.iris.util.json.JSONObject;
@@ -54,73 +57,6 @@ import java.io.IOException;
 public class IrisDimension extends IrisRegistrant {
     public static final BlockData STONE = Material.STONE.createBlockData();
     public static final BlockData WATER = Material.WATER.createBlockData();
-    private static final String DP_OVERWORLD_DEFAULT = """
-            {
-              "ambient_light": 0.0,
-              "bed_works": true,
-              "coordinate_scale": 1.0,
-              "effects": "minecraft:overworld",
-              "has_ceiling": false,
-              "has_raids": true,
-              "has_skylight": true,
-              "infiniburn": "#minecraft:infiniburn_overworld",
-              "monster_spawn_block_light_limit": 0,
-              "monster_spawn_light_level": {
-                "type": "minecraft:uniform",
-                "value": {
-                  "max_inclusive": 7,
-                  "min_inclusive": 0
-                }
-              },
-              "natural": true,
-              "piglin_safe": false,
-              "respawn_anchor_works": false,
-              "ultrawarm": false
-            }""";
-
-    private static final String DP_NETHER_DEFAULT = """
-            {
-              "ambient_light": 0.1,
-              "bed_works": false,
-              "coordinate_scale": 8.0,
-              "effects": "minecraft:the_nether",
-              "fixed_time": 18000,
-              "has_ceiling": true,
-              "has_raids": false,
-              "has_skylight": false,
-              "infiniburn": "#minecraft:infiniburn_nether",
-              "monster_spawn_block_light_limit": 15,
-              "monster_spawn_light_level": 7,
-              "natural": false,
-              "piglin_safe": true,
-              "respawn_anchor_works": true,
-              "ultrawarm": true
-            }""";
-
-    private static final String DP_END_DEFAULT = """
-            {
-              "ambient_light": 0.0,
-              "bed_works": false,
-              "coordinate_scale": 1.0,
-              "effects": "minecraft:the_end",
-              "fixed_time": 6000,
-              "has_ceiling": false,
-              "has_raids": true,
-              "has_skylight": false,
-              "infiniburn": "#minecraft:infiniburn_end",
-              "monster_spawn_block_light_limit": 0,
-              "monster_spawn_light_level": {
-                "type": "minecraft:uniform",
-                "value": {
-                  "max_inclusive": 7,
-                  "min_inclusive": 0
-                }
-              },
-              "natural": false,
-              "piglin_safe": false,
-              "respawn_anchor_works": false,
-              "ultrawarm": false
-            }""";
     private final transient AtomicCache<Position2> parallaxSize = new AtomicCache<>();
     private final transient AtomicCache<CNG> rockLayerGenerator = new AtomicCache<>();
     private final transient AtomicCache<CNG> fluidLayerGenerator = new AtomicCache<>();
@@ -443,61 +379,35 @@ public class IrisDimension extends IrisRegistrant {
         return landBiomeStyle;
     }
 
-    public boolean installDataPack(IDataFixer fixer, DataProvider data, File datapacks, double ultimateMaxHeight, double ultimateMinHeight) {
+    public void installBiomes(IDataFixer fixer, DataProvider data, KList<File> folders, KSet<String> biomes) {
-        boolean write = false;
+        getAllBiomes(data)
-        boolean changed = false;
+                .stream()
-
+                .filter(IrisBiome::isCustom)
-        IO.delete(new File(datapacks, "iris/data/" + getLoadKey().toLowerCase()));
+                .map(IrisBiome::getCustomDerivitives)
-
+                .flatMap(KList::stream)
-        for (IrisBiome i : getAllBiomes(data)) {
+                .parallel()
-            if (i.isCustom()) {
+                .forEach(j -> {
-                write = true;
+                    String json = j.generateJson(fixer);
-
+                    synchronized (biomes) {
-                for (IrisBiomeCustom j : i.getCustomDerivitives()) {
+                        if (!biomes.add(j.getId())) {
-                    File output = new File(datapacks, "iris/data/" + getLoadKey().toLowerCase() + "/worldgen/biome/" + j.getId() + ".json");
+                            Iris.verbose("Duplicate Data Pack Biome: " + getLoadKey() + "/" + j.getId());
-
+                            return;
-                    if (!output.exists()) {
-                        changed = true;
-                    }
-
-                    Iris.verbose("    Installing Data Pack Biome: " + output.getPath());
-                    output.getParentFile().mkdirs();
-                    try {
-                        IO.writeAll(output, j.generateJson(fixer));
-                    } catch (IOException e) {
-                        Iris.reportError(e);
-                        e.printStackTrace();
-                    }
-                }
-            }
-        }
-
-        if (!dimensionHeight.equals(new IrisRange(-64, 320)) && this.name.equalsIgnoreCase("overworld")) {
-            Iris.verbose("    Installing Data Pack Dimension Types: \"minecraft:overworld\", \"minecraft:the_nether\", \"minecraft:the_end\"");
-            dimensionHeight.setMax(ultimateMaxHeight);
-            dimensionHeight.setMin(ultimateMinHeight);
-            changed = writeDimensionType(fixer, changed, datapacks);
-        }
-
-        if (write) {
-            File mcm = new File(datapacks, "iris/pack.mcmeta");
-            try {
-                IO.writeAll(mcm, """
-                        {
-                            "pack": {
-                                "description": "Iris Data Pack. This pack contains all installed Iris Packs' resources.",
-                                "pack_format": {}
-                            }
                         }
-                        """.replace("{}", INMS.get().getDataVersion().getPackFormat() + ""));
+                    }
-            } catch (IOException e) {
-                Iris.reportError(e);
-                e.printStackTrace();
-            }
-            Iris.verbose("    Installing Data Pack MCMeta: " + mcm.getPath());
-        }
 
-        return changed;
+                    for (File datapacks : folders) {
+                        File output = new File(datapacks, "iris/data/" + getLoadKey().toLowerCase() + "/worldgen/biome/" + j.getId() + ".json");
+
+                        Iris.verbose("    Installing Data Pack Biome: " + output.getPath());
+                        output.getParentFile().mkdirs();
+                        try {
+                            IO.writeAll(output, json);
+                        } catch (IOException e) {
+                            Iris.reportError(e);
+                            e.printStackTrace();
+                        }
+                    }
+                });
     }
 
     @Override
@@ -515,66 +425,55 @@ public class IrisDimension extends IrisRegistrant {
 
     }
 
-    public boolean writeDimensionType(IDataFixer fixer, boolean changed, File datapacks) {
+    public static void writeShared(KList<File> folders, DimensionHeight height) {
-        File dimTypeOverworld = new File(datapacks, "iris/data/minecraft/dimension_type/overworld.json");
+        Iris.verbose("    Installing Data Pack Dimension Types: \"iris:overworld\", \"iris:the_nether\", \"iris:the_end\"");
-        if (!dimTypeOverworld.exists())
+        for (File datapacks : folders) {
-            changed = true;
+            write(datapacks, "overworld", height.overworldType());
-        dimTypeOverworld.getParentFile().mkdirs();
+            write(datapacks, "the_nether", height.netherType());
+            write(datapacks, "the_end", height.endType());
+        }
+
+        String raw = """
+                        {
+                            "pack": {
+                                "description": "Iris Data Pack. This pack contains all installed Iris Packs' resources.",
+                                "pack_format": {}
+                            }
+                        }
+                        """.replace("{}", INMS.get().getDataVersion().getPackFormat() + "");
+
+        for (File datapacks : folders) {
+            File mcm = new File(datapacks, "iris/pack.mcmeta");
+            try {
+                IO.writeAll(mcm, raw);
+            } catch (IOException e) {
+                Iris.reportError(e);
+                e.printStackTrace();
+            }
+            Iris.verbose("    Installing Data Pack MCMeta: " + mcm.getPath());
+        }
+    }
+
+    private static void write(File datapacks, String type, String json) {
+        File dimType = new File(datapacks, "iris/data/iris/dimension_type/" + type + ".json");
+        File dimTypeVanilla = new File(datapacks, "iris/data/minecraft/dimension_type/" + type + ".json");
+
+        dimType.getParentFile().mkdirs();
         try {
-            IO.writeAll(dimTypeOverworld, generateDatapackJsonOverworld(fixer));
+            IO.writeAll(dimType, json);
         } catch (IOException e) {
             Iris.reportError(e);
             e.printStackTrace();
         }
 
-
+        if (IrisSettings.get().getGeneral().adjustVanillaHeight || dimTypeVanilla.exists()) {
-        File dimTypeNether = new File(datapacks, "iris/data/minecraft/dimension_type/the_nether.json");
+            dimTypeVanilla.getParentFile().mkdirs();
-        if (!dimTypeNether.exists())
+            try {
-            changed = true;
+                IO.writeAll(dimTypeVanilla, json);
-        dimTypeNether.getParentFile().mkdirs();
+            } catch (IOException e) {
-        try {
+                Iris.reportError(e);
-            IO.writeAll(dimTypeNether, generateDatapackJsonNether(fixer));
+                e.printStackTrace();
-        } catch (IOException e) {
+            }
-            Iris.reportError(e);
-            e.printStackTrace();
         }
-
-
-        File dimTypeEnd = new File(datapacks, "iris/data/minecraft/dimension_type/the_end.json");
-        if (!dimTypeEnd.exists())
-            changed = true;
-        dimTypeEnd.getParentFile().mkdirs();
-        try {
-            IO.writeAll(dimTypeEnd, generateDatapackJsonEnd(fixer));
-        } catch (IOException e) {
-            Iris.reportError(e);
-            e.printStackTrace();
-        }
-
-        return changed;
-    }
-
-    private String generateDatapackJsonOverworld(IDataFixer fixer) {
-        JSONObject obj = new JSONObject(DP_OVERWORLD_DEFAULT);
-        obj.put("min_y", dimensionHeight.getMin());
-        obj.put("height", dimensionHeight.getMax() - dimensionHeight.getMin());
-        obj.put("logical_height", logicalHeight);
-        return fixer.fixDimension(obj).toString(4);
-    }
-
-    private String generateDatapackJsonNether(IDataFixer fixer) {
-        JSONObject obj = new JSONObject(DP_NETHER_DEFAULT);
-        obj.put("min_y", dimensionHeightNether.getMin());
-        obj.put("height", dimensionHeightNether.getMax() - dimensionHeightNether.getMin());
-        obj.put("logical_height", logicalHeightNether);
-        return fixer.fixDimension(obj).toString(4);
-    }
-
-    private String generateDatapackJsonEnd(IDataFixer fixer) {
-        JSONObject obj = new JSONObject(DP_END_DEFAULT);
-        obj.put("min_y", dimensionHeightEnd.getMin());
-        obj.put("height", dimensionHeightEnd.getMax() - dimensionHeightEnd.getMin());
-        obj.put("logical_height", logicalHeightEnd);
-        return fixer.fixDimension(obj).toString(4);
     }
 }

core/src/main/java/com/volmit/iris/engine/object/IrisEngineChunkData.java

@@ -1,43 +0,0 @@
-/*
- * Iris is a World Generator for Minecraft Bukkit Servers
- * Copyright (c) 2022 Arcane Arts (Volmit Software)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package com.volmit.iris.engine.object;
-
-import com.volmit.iris.engine.framework.Engine;
-import com.volmit.iris.util.collection.KList;
-import lombok.Data;
-
-@Data
-public class IrisEngineChunkData {
-    private long chunk;
-    private KList<IrisEngineSpawnerCooldown> cooldowns = new KList<>();
-
-    public void cleanup(Engine engine) {
-        for (IrisEngineSpawnerCooldown i : getCooldowns().copy()) {
-            IrisSpawner sp = engine.getData().getSpawnerLoader().load(i.getSpawner());
-
-            if (sp == null || i.canSpawn(sp.getMaximumRate())) {
-                getCooldowns().remove(i);
-            }
-        }
-    }
-
-    public boolean isEmpty() {
-        return cooldowns.isEmpty();
-    }
-}

core/src/main/java/com/volmit/iris/engine/object/IrisEngineData.java

@@ -20,51 +20,31 @@ package com.volmit.iris.engine.object;
 
 import com.volmit.iris.engine.data.cache.Cache;
 import com.volmit.iris.engine.framework.Engine;
-import com.volmit.iris.util.collection.KList;
+import com.volmit.iris.util.collection.KMap;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
 
 @Data
-public class IrisEngineData {
+@EqualsAndHashCode(callSuper = true)
+public class IrisEngineData extends IrisSpawnerCooldowns {
     private IrisEngineStatistics statistics = new IrisEngineStatistics();
-    private KList<IrisEngineSpawnerCooldown> spawnerCooldowns = new KList<>();
+    private KMap<Long, IrisSpawnerCooldowns> chunks = new KMap<>();
-    private KList<IrisEngineChunkData> chunks = new KList<>();
     private Long seed = null;
 
     public void removeChunk(int x, int z) {
-        long k = Cache.key(x, z);
+        chunks.remove(Cache.key(x, z));
-        chunks.removeWhere((i) -> i.getChunk() == k);
     }
 
-    public IrisEngineChunkData getChunk(int x, int z) {
+    public IrisSpawnerCooldowns getChunk(int x, int z) {
-        long k = Cache.key(x, z);
+        return chunks.computeIfAbsent(Cache.key(x, z), k -> new IrisSpawnerCooldowns());
-
-        for (IrisEngineChunkData i : chunks) {
-            if (i.getChunk() == k) {
-                return i;
-            }
-        }
-
-        IrisEngineChunkData c = new IrisEngineChunkData();
-        c.setChunk(k);
-        chunks.add(c);
-        return c;
     }
 
     public void cleanup(Engine engine) {
-        for (IrisEngineSpawnerCooldown i : getSpawnerCooldowns().copy()) {
+        super.cleanup(engine);
-            IrisSpawner sp = engine.getData().getSpawnerLoader().load(i.getSpawner());
 
-            if (sp == null || i.canSpawn(sp.getMaximumRate())) {
+        chunks.values().removeIf(chunk -> {
-                getSpawnerCooldowns().remove(i);
+            chunk.cleanup(engine);
-            }
+            return chunk.isEmpty();
-        }
+        });
-
-        for (IrisEngineChunkData i : chunks.copy()) {
-            i.cleanup(engine);
-
-            if (i.isEmpty()) {
-                getChunks().remove(i);
-            }
-        }
     }
 }

core/src/main/java/com/volmit/iris/engine/object/IrisExpression.java

@@ -24,6 +24,7 @@ import com.dfsek.paralithic.eval.parser.Scope;
 import com.volmit.iris.Iris;
 import com.volmit.iris.core.loader.IrisRegistrant;
 import com.volmit.iris.engine.data.cache.AtomicCache;
+import com.volmit.iris.engine.object.IrisExpressionFunction.FunctionContext;
 import com.volmit.iris.engine.object.annotations.ArrayType;
 import com.volmit.iris.engine.object.annotations.Desc;
 import com.volmit.iris.engine.object.annotations.Required;
@@ -46,12 +47,14 @@ import lombok.experimental.Accessors;
 @Data
 @EqualsAndHashCode(callSuper = false)
 public class IrisExpression extends IrisRegistrant {
-    private static final Parser parser = new Parser();
-
     @ArrayType(type = IrisExpressionLoad.class, min = 1)
     @Desc("Variables to use in this expression")
     private KList<IrisExpressionLoad> variables = new KList<>();
 
+    @ArrayType(type = IrisExpressionFunction.class, min = 1)
+    @Desc("Functions to use in this expression")
+    private KList<IrisExpressionFunction> functions = new KList<>();
+
     @Required
     @Desc("The expression. Inherited variables are x, y and z. Avoid using those variable names.")
     private String expression;
@@ -62,6 +65,7 @@ public class IrisExpression extends IrisRegistrant {
     private Expression expression() {
         return expressionCache.aquire(() -> {
             Scope scope = new Scope(); // Create variable scope. This scope can hold both constants and invocation variables.
+            Parser parser = new Parser();
 
             try {
                 for (IrisExpressionLoad i : variables) {
@@ -76,6 +80,12 @@ public class IrisExpression extends IrisRegistrant {
                 Iris.error("Script Variable load error in " + getLoadFile().getPath());
             }
 
+            for (IrisExpressionFunction f : functions) {
+                if (!f.isValid()) continue;
+                f.setData(getLoader());
+                parser.registerFunction(f.getName(), f);
+            }
+
             try {
                 return parser.parse(getExpression(), scope);
             } catch (Throwable e) {
@@ -103,7 +113,7 @@ public class IrisExpression extends IrisRegistrant {
         g[m++] = z;
         g[m] = -1;
 
-        return expression().evaluate(g);
+        return expression().evaluate(new FunctionContext(rng), g);
     }
 
     public double evaluate(RNG rng, double x, double y, double z) {
@@ -117,7 +127,7 @@ public class IrisExpression extends IrisRegistrant {
         g[m++] = y;
         g[m] = z;
 
-        return expression().evaluate(g);
+        return expression().evaluate(new FunctionContext(rng), g);
     }
 
     @Override

core/src/main/java/com/volmit/iris/engine/object/IrisExpressionFunction.java

@@ -0,0 +1,101 @@
+package com.volmit.iris.engine.object;
+
+import com.dfsek.paralithic.functions.dynamic.Context;
+import com.dfsek.paralithic.functions.dynamic.DynamicFunction;
+import com.dfsek.paralithic.node.Statefulness;
+import com.volmit.iris.core.loader.IrisData;
+import com.volmit.iris.engine.object.annotations.Desc;
+import com.volmit.iris.engine.object.annotations.MinNumber;
+import com.volmit.iris.engine.object.annotations.Required;
+import com.volmit.iris.engine.object.annotations.Snippet;
+import com.volmit.iris.util.collection.KMap;
+import com.volmit.iris.util.math.RNG;
+import lombok.*;
+import lombok.experimental.Accessors;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+@Snippet("expression-function")
+@Accessors(chain = true)
+@NoArgsConstructor
+@AllArgsConstructor
+@Desc("Represents a function to use in your expression. Do not set the name to x, y, or z, also don't duplicate names.")
+@Data
+@EqualsAndHashCode(callSuper = false)
+public class IrisExpressionFunction implements DynamicFunction {
+    @Required
+    @Desc("The function to assign this value to. Do not set the name to x, y, or z")
+    private String name;
+
+    @Desc("If defined, this variable will use a generator style as it's value")
+    private IrisGeneratorStyle styleValue = null;
+
+    @Desc("If defined, iris will use an internal stream from the engine as it's value")
+    private IrisEngineStreamType engineStreamValue = null;
+
+    @MinNumber(2)
+    @Desc("Number of arguments for the function")
+    private int args = 2;
+
+    @Getter(AccessLevel.NONE)
+    @Setter(AccessLevel.NONE)
+    private transient final KMap<FunctionContext, Provider> cache = new KMap<>();
+    private transient IrisData data;
+
+    public boolean isValid() {
+        return styleValue != null || engineStreamValue != null;
+    }
+
+    @Override
+    public int getArgNumber() {
+        if (engineStreamValue != null) return 2;
+        return Math.max(args, 2);
+    }
+
+    @NotNull
+    @Override
+    public Statefulness statefulness() {
+        return Statefulness.STATEFUL;
+    }
+
+    @Override
+    public double eval(double... doubles) {
+        return 0;
+    }
+
+    @Override
+    public double eval(@Nullable Context raw, double... args) {
+        return cache.computeIfAbsent((FunctionContext) raw, context -> {
+            assert context != null;
+            if (engineStreamValue != null) {
+                var stream = engineStreamValue.get(data.getEngine());
+                return d -> stream.get(d[0], d[1]);
+            }
+
+            if (styleValue != null) {
+                return styleValue.createNoCache(context.rng, data)::noise;
+            }
+
+            return d -> Double.NaN;
+        }).eval(args);
+    }
+
+    public record FunctionContext(@NonNull RNG rng) implements Context {
+        @Override
+        public boolean equals(Object o) {
+            if (o == null || getClass() != o.getClass()) return false;
+            FunctionContext that = (FunctionContext) o;
+            return rng.getSeed() == that.rng.getSeed();
+        }
+
+        @Override
+        public int hashCode() {
+            return Long.hashCode(rng.getSeed());
+        }
+    }
+
+    @FunctionalInterface
+    private interface Provider {
+        double eval(double... args);
+    }
+}

core/src/main/java/com/volmit/iris/engine/object/IrisExpressionLoad.java

@@ -23,12 +23,11 @@ import com.volmit.iris.engine.data.cache.AtomicCache;
 import com.volmit.iris.engine.object.annotations.Desc;
 import com.volmit.iris.engine.object.annotations.Required;
 import com.volmit.iris.engine.object.annotations.Snippet;
+import com.volmit.iris.util.collection.KMap;
 import com.volmit.iris.util.math.RNG;
+import com.volmit.iris.util.noise.CNG;
 import com.volmit.iris.util.stream.ProceduralStream;
-import lombok.AllArgsConstructor;
+import lombok.*;
-import lombok.Data;
-import lombok.EqualsAndHashCode;
-import lombok.NoArgsConstructor;
 import lombok.experimental.Accessors;
 
 @Snippet("expression-load")
@@ -57,6 +56,9 @@ public class IrisExpressionLoad {
 
     private transient AtomicCache<ProceduralStream<Double>> streamCache = new AtomicCache<>();
     private transient AtomicCache<Double> valueCache = new AtomicCache<>();
+    @Getter(AccessLevel.NONE)
+    @Setter(AccessLevel.NONE)
+    private transient final KMap<Long, CNG> styleCache = new KMap<>();
 
     public double getValue(RNG rng, IrisData data, double x, double z) {
         if (engineValue != null) {
@@ -68,7 +70,8 @@ public class IrisExpressionLoad {
         }
 
         if (styleValue != null) {
-            return styleValue.create(rng, data).noise(x, z);
+            return styleCache.computeIfAbsent(rng.getSeed(), k -> styleValue.createNoCache(new RNG(k), data))
+                    .noise(x, z);
         }
 
         return staticValue;
@@ -84,7 +87,8 @@ public class IrisExpressionLoad {
         }
 
         if (styleValue != null) {
-            return styleValue.create(rng, data).noise(x, y, z);
+            return styleCache.computeIfAbsent(rng.getSeed(), k -> styleValue.createNoCache(new RNG(k), data))
+                    .noise(x, y, z);
         }
 
         return staticValue;

core/src/main/java/com/volmit/iris/engine/object/IrisJigsawStructurePlacement.java

@@ -19,13 +19,8 @@
 package com.volmit.iris.engine.object;
 
 import com.volmit.iris.Iris;
-import com.volmit.iris.engine.object.annotations.ArrayType;
+import com.volmit.iris.core.loader.IrisData;
-import com.volmit.iris.engine.object.annotations.Desc;
+import com.volmit.iris.engine.object.annotations.*;
-import com.volmit.iris.engine.object.annotations.MaxNumber;
-import com.volmit.iris.engine.object.annotations.MinNumber;
-import com.volmit.iris.engine.object.annotations.RegistryListResource;
-import com.volmit.iris.engine.object.annotations.Required;
-import com.volmit.iris.engine.object.annotations.Snippet;
 import com.volmit.iris.util.collection.KList;
 import com.volmit.iris.util.collection.KMap;
 import com.volmit.iris.util.documentation.ChunkCoordinates;
@@ -54,6 +49,7 @@ public class IrisJigsawStructurePlacement implements IRare {
     private int rarity = 100;
 
     @Required
+    @DependsOn({"spacing", "separation"})
     @Desc("The salt to use when generating the structure (to differentiate structures)")
     @MinNumber(Long.MIN_VALUE)
     @MaxNumber(Long.MAX_VALUE)
@@ -61,16 +57,26 @@ public class IrisJigsawStructurePlacement implements IRare {
 
     @Required
     @MinNumber(0)
+    @DependsOn({"salt", "separation"})
     @Desc("Average distance in chunks between two neighboring generation attempts")
     private int spacing = -1;
 
     @Required
     @MinNumber(0)
+    @DependsOn({"salt", "spacing"})
     @Desc("Minimum distance in chunks between two neighboring generation attempts\nThe maximum distance of two neighboring generation attempts is 2*spacing - separation")
     private int separation = -1;
 
     @Desc("The method used to spread the structure")
-    private SpreadType spreadType = SpreadType.TRIANGULAR;
+    private SpreadType spreadType = SpreadType.LINEAR;
+
+    @DependsOn({"spreadType"})
+    @Desc("The noise style to use when spreadType is set to 'NOISE'\nThis ignores the spacing and separation parameters")
+    private IrisGeneratorStyle style = new IrisGeneratorStyle();
+
+    @DependsOn({"spreadType", "style"})
+    @Desc("Threshold for noise style")
+    private double threshold = 0.5;
 
     @ArrayType(type = IrisJigsawMinDistance.class)
     @Desc("List of minimum distances to check for")
@@ -89,20 +95,29 @@ public class IrisJigsawStructurePlacement implements IRare {
     }
 
     private void calculateMissing(double divisor, long seed) {
-        seed = seed + hashCode();
+        if (salt != 0 && separation > 0 && spacing > 0)
+            return;
+        seed *= (long) structure.hashCode() * rarity;
         if (salt == 0) {
-            salt = new RNG(seed).nextLong(Integer.MIN_VALUE, Integer.MAX_VALUE);
+            salt = new RNG(seed).l(Integer.MIN_VALUE, Integer.MAX_VALUE);
         }
 
         if (separation == -1 || spacing == -1) {
             separation = (int) Math.round(rarity / divisor);
-            spacing = new RNG(seed).nextInt(separation, separation * 2);
+            spacing = new RNG(seed).i(separation, separation * 2);
         }
     }
 
     @ChunkCoordinates
-    public boolean shouldPlace(double divisor, long seed, int x, int z) {
+    public boolean shouldPlace(IrisData data, double divisor, long seed, int x, int z) {
         calculateMissing(divisor, seed);
+        if (spreadType != SpreadType.NOISE)
+            return shouldPlaceSpread(seed, x, z);
+
+        return style.create(new RNG(seed + salt), data).noise(x, z) > threshold;
+    }
+
+    private boolean shouldPlaceSpread(long seed, int x, int z) {
         if (separation > spacing) {
             separation = spacing;
             Iris.warn("JigsawStructurePlacement: separation must be less than or equal to spacing");
@@ -123,7 +138,9 @@ public class IrisJigsawStructurePlacement implements IRare {
         @Desc("Linear spread")
         LINEAR(RNG::i),
         @Desc("Triangular spread")
-        TRIANGULAR((rng, bound) -> (rng.i(bound) + rng.i(bound)) / 2);
+        TRIANGULAR((rng, bound) -> (rng.i(bound) + rng.i(bound)) / 2),
+        @Desc("Noise based spread\nThis ignores the spacing and separation parameters")
+        NOISE((rng, bound) -> 0);
         private final SpreadMethod method;
 
         SpreadType(SpreadMethod method) {

core/src/main/java/com/volmit/iris/engine/object/IrisObject.java

@@ -29,7 +29,7 @@ import com.volmit.iris.util.collection.KList;
 import com.volmit.iris.util.collection.KMap;
 import com.volmit.iris.util.context.IrisContext;
 import com.volmit.iris.util.data.B;
-import com.volmit.iris.util.data.IrisBlockData;
+import com.volmit.iris.util.data.IrisCustomData;
 import com.volmit.iris.util.format.Form;
 import com.volmit.iris.util.interpolation.IrisInterpolation;
 import com.volmit.iris.util.json.JSONObject;
@@ -53,8 +53,6 @@ import org.bukkit.Location;
 import org.bukkit.Material;
 import org.bukkit.block.Block;
 import org.bukkit.block.BlockFace;
-import org.bukkit.block.BlockState;
-import org.bukkit.block.TileState;
 import org.bukkit.block.data.BlockData;
 import org.bukkit.block.data.MultipleFacing;
 import org.bukkit.block.data.Waterlogged;
@@ -943,7 +941,7 @@ public class IrisObject extends IrisRegistrant {
                             if (j.isExact() ? k.matches(data) : k.getMaterial().equals(data.getMaterial())) {
                                 BlockData newData = j.getReplace(rng, i.getX() + x, i.getY() + y, i.getZ() + z, rdata).clone();
 
-                                if (newData.getMaterial() == data.getMaterial() && !(newData instanceof IrisBlockData || data instanceof IrisBlockData))
+                                if (newData.getMaterial() == data.getMaterial() && !(newData instanceof IrisCustomData || data instanceof IrisCustomData))
                                     data = data.merge(newData);
                                 else
                                     data = newData;
@@ -1012,8 +1010,9 @@ public class IrisObject extends IrisRegistrant {
                 }
 
                 boolean wouldReplace = B.isSolid(placer.get(xx, yy, zz)) && B.isVineBlock(data);
+                boolean place = !data.getMaterial().equals(Material.AIR) && !data.getMaterial().equals(Material.CAVE_AIR) && !wouldReplace;
 
-                if (!data.getMaterial().equals(Material.AIR) && !data.getMaterial().equals(Material.CAVE_AIR) && !wouldReplace) {
+                if (data instanceof IrisCustomData || place) {
                     placer.set(xx, yy, zz, data);
                     if (tile != null) {
                         placer.setTile(xx, yy, zz, tile);

core/src/main/java/com/volmit/iris/engine/object/IrisRange.java

@@ -50,4 +50,10 @@ public class IrisRange {
     public boolean contains(int v) {
         return v >= min && v <= max;
     }
+
+    public IrisRange merge(IrisRange other) {
+        min = Math.min(min, other.min);
+        max = Math.max(max, other.max);
+        return this;
+    }
 }

core/src/main/java/com/volmit/iris/engine/object/IrisRate.java

@@ -43,7 +43,7 @@ public class IrisRate {
     }
 
     public long getInterval() {
-        long t = per.getMilliseconds() / (amount == 0 ? 1 : amount);
+        long t = per.toMilliseconds() / (amount == 0 ? 1 : amount);
         return Math.abs(t <= 0 ? 1 : t);
     }
 

core/src/main/java/com/volmit/iris/engine/object/IrisSpawner.java

@@ -19,6 +19,7 @@
 package com.volmit.iris.engine.object;
 
 import com.volmit.iris.core.loader.IrisRegistrant;
+import com.volmit.iris.engine.framework.Engine;
 import com.volmit.iris.engine.object.annotations.ArrayType;
 import com.volmit.iris.engine.object.annotations.Desc;
 import com.volmit.iris.util.collection.KList;
@@ -95,6 +96,37 @@ public class IrisSpawner extends IrisRegistrant {
         return timeBlock.isWithin(world) && weather.is(world);
     }
 
+    public boolean canSpawn(Engine engine) {
+        if (!isValid(engine.getWorld().realWorld()))
+            return false;
+
+        var rate = getMaximumRate();
+        return rate.isInfinite() || engine.getEngineData().getCooldown(this).canSpawn(rate);
+    }
+
+    public boolean canSpawn(Engine engine, int x, int z) {
+        if (!canSpawn(engine))
+            return false;
+
+        var rate = getMaximumRatePerChunk();
+        return rate.isInfinite() || engine.getEngineData().getChunk(x, z).getCooldown(this).canSpawn(rate);
+    }
+
+    public void spawn(Engine engine) {
+        if (getMaximumRate().isInfinite())
+            return;
+
+        engine.getEngineData().getCooldown(this).spawn(engine);
+    }
+
+    public void spawn(Engine engine, int x, int z) {
+        spawn(engine);
+        if (getMaximumRatePerChunk().isInfinite())
+            return;
+
+        engine.getEngineData().getChunk(x, z).getCooldown(this).spawn(engine);
+    }
+
     @Override
     public String getFolderName() {
         return "spawners";

core/src/main/java/com/volmit/iris/engine/object/IrisSpawnerCooldowns.java

@@ -0,0 +1,34 @@
+package com.volmit.iris.engine.object;
+
+import com.volmit.iris.engine.framework.Engine;
+import com.volmit.iris.util.collection.KMap;
+import lombok.EqualsAndHashCode;
+import lombok.NonNull;
+
+@EqualsAndHashCode
+public class IrisSpawnerCooldowns {
+    private final KMap<String, IrisEngineSpawnerCooldown> cooldowns = new KMap<>();
+
+    public IrisEngineSpawnerCooldown getCooldown(@NonNull IrisSpawner spawner) {
+        return getCooldown(spawner.getLoadKey());
+    }
+
+    public IrisEngineSpawnerCooldown getCooldown(@NonNull String loadKey) {
+        return cooldowns.computeIfAbsent(loadKey, k -> {
+            IrisEngineSpawnerCooldown cd = new IrisEngineSpawnerCooldown();
+            cd.setSpawner(loadKey);
+            return cd;
+        });
+    }
+
+    public void cleanup(Engine engine) {
+        cooldowns.values().removeIf(cd -> {
+            IrisSpawner sp = engine.getData().getSpawnerLoader().load(cd.getSpawner());
+            return sp == null || cd.canSpawn(sp.getMaximumRate());
+        });
+    }
+
+    public boolean isEmpty() {
+        return cooldowns.isEmpty();
+    }
+}

core/src/main/java/com/volmit/iris/engine/object/TileData.java

@@ -35,7 +35,6 @@ import java.io.IOException;
 
 @SuppressWarnings("ALL")
 @Getter
-@ToString
 @EqualsAndHashCode
 @AllArgsConstructor
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
@@ -137,4 +136,9 @@ public class TileData implements Cloneable {
         clone.properties = properties.copy(); //TODO make a deep copy
         return clone;
     }
+
+    @Override
+    public String toString() {
+        return material.getKey() + gson.toJson(properties);
+    }
 }

core/src/main/java/com/volmit/iris/util/data/IrisCustomData.java

@@ -15,7 +15,7 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 @Data
-public class IrisBlockData implements BlockData {
+public class IrisCustomData implements BlockData {
 	private final @NonNull BlockData base;
 	private final @NotNull Identifier custom;
 
@@ -40,12 +40,12 @@ public class IrisBlockData implements BlockData {
 	@NotNull
 	@Override
 	public BlockData merge(@NotNull BlockData blockData) {
-		return new IrisBlockData(base.merge(blockData), custom);
+		return new IrisCustomData(base.merge(blockData), custom);
 	}
 
 	@Override
 	public boolean matches(@Nullable BlockData blockData) {
-		if (blockData instanceof IrisBlockData b)
+		if (blockData instanceof IrisCustomData b)
 			return custom.equals(b.custom) && base.matches(b.base);
 		return base.matches(blockData);
 	}
@@ -53,7 +53,7 @@ public class IrisBlockData implements BlockData {
 	@NotNull
 	@Override
 	public BlockData clone() {
-		return new IrisBlockData(base.clone(), custom);
+		return new IrisCustomData(base.clone(), custom);
 	}
 
 	@NotNull

core/src/main/java/com/volmit/iris/util/data/registry/RegistryUtil.java

@@ -1,15 +1,18 @@
 package com.volmit.iris.util.data.registry;
 
 import com.volmit.iris.core.nms.container.Pair;
+import com.volmit.iris.engine.data.cache.AtomicCache;
 import lombok.NonNull;
 import org.bukkit.Bukkit;
 import org.bukkit.Keyed;
 import org.bukkit.NamespacedKey;
 import org.bukkit.Registry;
+import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.lang.reflect.Modifier;
 import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.Map;
@@ -20,6 +23,7 @@ import java.util.stream.Collectors;
 
 @SuppressWarnings("unchecked")
 public class RegistryUtil {
+    private static final AtomicCache<RegistryLookup> registryLookup = new AtomicCache<>();
     private static final Map<Class<?>, Map<NamespacedKey, Keyed>> KEYED_REGISTRY = new HashMap<>();
     private static final Map<Class<?>, Map<NamespacedKey, Object>> ENUM_REGISTRY = new HashMap<>();
     private static final Map<Class<?>, Registry<Keyed>> REGISTRY = new HashMap<>();
@@ -43,7 +47,7 @@ public class RegistryUtil {
         if (keys.length == 0) throw new IllegalArgumentException("Need at least one key");
         Registry<Keyed> registry = null;
         if (Keyed.class.isAssignableFrom(typeClass)) {
-            registry = Bukkit.getRegistry(typeClass.asSubclass(Keyed.class));
+            registry = getRegistry(typeClass.asSubclass(Keyed.class));
         }
         if (registry == null) {
             registry = REGISTRY.computeIfAbsent(typeClass, t -> Arrays.stream(Registry.class.getDeclaredFields())
@@ -150,4 +154,56 @@ public class RegistryUtil {
             };
         }
     }
+
+    @Nullable
+    private static <T extends Keyed> Registry<T> getRegistry(@NotNull Class<T> type) {
+        RegistryLookup lookup = registryLookup.aquire(() -> {
+            RegistryLookup bukkit;
+            try {
+                bukkit = Bukkit::getRegistry;
+            } catch (Throwable ignored) {
+                bukkit = null;
+            }
+            return new DefaultRegistryLookup(bukkit);
+        });
+        return lookup.find(type);
+    }
+
+    private interface RegistryLookup {
+        @Nullable
+        <T extends Keyed> Registry<T> find(@NonNull Class<T> type);
+    }
+
+    private static class DefaultRegistryLookup implements RegistryLookup {
+        private final RegistryLookup bukkit;
+        private final Map<Type, Object> registries;
+
+        private DefaultRegistryLookup(RegistryLookup bukkit) {
+            this.bukkit = bukkit;
+            registries = Arrays.stream(Registry.class.getDeclaredFields())
+                    .filter(field -> Modifier.isPublic(field.getModifiers()) && Modifier.isStatic(field.getModifiers()))
+                    .filter(field -> Registry.class.isAssignableFrom(field.getType()))
+                    .map(field -> {
+                        var type = ((ParameterizedType) field.getGenericType()).getActualTypeArguments()[0];
+                        try {
+                            return new Pair<>(type, field.get(null));
+                        } catch (Throwable e) {
+                            return null;
+                        }
+                    })
+                    .filter(Objects::nonNull)
+                    .collect(Collectors.toMap(Pair::getA, Pair::getB, (a, b) -> a));
+        }
+
+        @Nullable
+        @Override
+        public <T extends Keyed> Registry<T> find(@NonNull Class<T> type) {
+            if (bukkit == null) return (Registry<T>) registries.get(type);
+            try {
+                return bukkit.find(type);
+            } catch (Throwable e) {
+                return (Registry<T>) registries.get(type);
+            }
+        }
+    }
 }

core/src/main/java/com/volmit/iris/util/hunk/view/ChunkDataHunkView.java

@@ -19,7 +19,7 @@
 package com.volmit.iris.util.hunk.view;
 
 import com.volmit.iris.util.data.B;
-import com.volmit.iris.util.data.IrisBlockData;
+import com.volmit.iris.util.data.IrisCustomData;
 import com.volmit.iris.util.hunk.Hunk;
 import org.bukkit.block.data.BlockData;
 import org.bukkit.generator.ChunkGenerator.ChunkData;
@@ -73,7 +73,7 @@ public class ChunkDataHunkView implements Hunk<BlockData> {
         }
 
         try {
-            if (t instanceof IrisBlockData d)
+            if (t instanceof IrisCustomData d)
                 t = d.getBase();
             chunk.setBlock(x, y + chunk.getMinHeight(), z, t);
         } catch (Throwable ignored) {

core/src/main/java/com/volmit/iris/util/mantle/MantleFlag.java

@@ -35,7 +35,8 @@ public enum MantleFlag {
     ETCHED,
     TILE,
     CUSTOM,
-    DISCOVERED;
+    DISCOVERED,
+    CUSTOM_ACTIVE;
 
     static StateList getStateList() {
         return new StateList(MantleFlag.values());

core/src/main/java/com/volmit/iris/util/matter/slices/BlockMatter.java

@@ -18,7 +18,7 @@
 
 package com.volmit.iris.util.matter.slices;
 
-import com.volmit.iris.util.data.IrisBlockData;
+import com.volmit.iris.util.data.IrisCustomData;
 import com.volmit.iris.util.data.palette.Palette;
 import com.volmit.iris.util.matter.Sliced;
 import org.bukkit.Bukkit;
@@ -41,7 +41,7 @@ public class BlockMatter extends RawMatter<BlockData> {
     public BlockMatter(int width, int height, int depth) {
         super(width, height, depth, BlockData.class);
         registerWriter(World.class, ((w, d, x, y, z) -> {
-            if (d instanceof IrisBlockData c)
+            if (d instanceof IrisCustomData c)
                 w.getBlockAt(x, y, z).setBlockData(c.getBase());
             else w.getBlockAt(x, y, z).setBlockData(d);
         }));

core/src/main/java/com/volmit/iris/util/misc/ServerProperties.java

@@ -0,0 +1,39 @@
+package com.volmit.iris.util.misc;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.util.Properties;
+
+public class ServerProperties {
+    public static final Properties DATA = new Properties();
+    public static final File SERVER_PROPERTIES;
+    public static final File BUKKIT_YML;
+
+    public static final String LEVEL_NAME = DATA.getProperty("level-name", "world");
+
+    static {
+        String[] args = ProcessHandle.current()
+                .info()
+                .arguments()
+                .orElse(new String[0]);
+
+        String propertiesPath = "server.properties";
+        String bukkitYml = "bukkit.yml";
+
+        for (int i = 0; i < args.length - 1; i++) {
+            switch (args[i]) {
+                case "-c", "--config" -> propertiesPath = args[i + 1];
+                case "-b", "--bukkit-settings" -> bukkitYml = args[i + 1];
+            }
+        }
+
+        SERVER_PROPERTIES = new File(propertiesPath);
+        BUKKIT_YML = new File(bukkitYml);
+        try (FileInputStream in = new FileInputStream(SERVER_PROPERTIES)){
+            DATA.load(in);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

nms/v1_19_R1/src/main/java/com/volmit/iris/core/nms/v1_19_R1/CustomBiomeSource.java

@@ -1,150 +0,0 @@
-package com.volmit.iris.core.nms.v1_19_R1;
-
-import com.mojang.serialization.Codec;
-import com.volmit.iris.Iris;
-import com.volmit.iris.engine.data.cache.AtomicCache;
-import com.volmit.iris.engine.framework.Engine;
-import com.volmit.iris.engine.object.IrisBiome;
-import com.volmit.iris.engine.object.IrisBiomeCustom;
-import com.volmit.iris.util.collection.KMap;
-import com.volmit.iris.util.math.RNG;
-import net.minecraft.core.Holder;
-import net.minecraft.core.Registry;
-import net.minecraft.core.RegistryAccess;
-import net.minecraft.resources.ResourceLocation;
-import net.minecraft.world.level.biome.Biome;
-import net.minecraft.world.level.biome.BiomeSource;
-import net.minecraft.world.level.biome.Climate;
-import org.bukkit.Bukkit;
-import org.bukkit.World;
-import org.bukkit.craftbukkit.v1_19_R1.CraftServer;
-import org.bukkit.craftbukkit.v1_19_R1.CraftWorld;
-import org.bukkit.craftbukkit.v1_19_R1.block.CraftBlock;
-
-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-import java.util.ArrayList;
-import java.util.List;
-
-public class CustomBiomeSource extends BiomeSource {
-    private final long seed;
-    private final Engine engine;
-    private final Registry<Biome> biomeCustomRegistry;
-    private final Registry<Biome> biomeRegistry;
-    private final AtomicCache<RegistryAccess> registryAccess = new AtomicCache<>();
-    private final RNG rng;
-    private final KMap<String, Holder<Biome>> customBiomes;
-
-    public CustomBiomeSource(long seed, Engine engine, World world) {
-        super(getAllBiomes(
-                ((RegistryAccess) getFor(RegistryAccess.Frozen.class, ((CraftServer) Bukkit.getServer()).getHandle().getServer()))
-                        .registry(Registry.BIOME_REGISTRY).orElse(null),
-                ((CraftWorld) world).getHandle().registryAccess().registry(Registry.BIOME_REGISTRY).orElse(null),
-                engine));
-        this.engine = engine;
-        this.seed = seed;
-        this.biomeCustomRegistry = registry().registry(Registry.BIOME_REGISTRY).orElse(null);
-        this.biomeRegistry = ((CraftWorld) world).getHandle().registryAccess().registry(Registry.BIOME_REGISTRY).orElse(null);
-        this.rng = new RNG(engine.getSeedManager().getBiome());
-        this.customBiomes = fillCustomBiomes(biomeCustomRegistry, engine);
-    }
-
-    private static List<Holder<Biome>> getAllBiomes(Registry<Biome> customRegistry, Registry<Biome> registry, Engine engine) {
-        List<Holder<Biome>> b = new ArrayList<>();
-
-        for (IrisBiome i : engine.getAllBiomes()) {
-            if (i.isCustom()) {
-                for (IrisBiomeCustom j : i.getCustomDerivitives()) {
-                    b.add(customRegistry.getHolder(customRegistry.getResourceKey(customRegistry
-                            .get(new ResourceLocation(engine.getDimension().getLoadKey() + ":" + j.getId()))).get()).get());
-                }
-            } else {
-                b.add(CraftBlock.biomeToBiomeBase(registry, i.getVanillaDerivative()));
-            }
-        }
-
-        return b;
-    }
-
-    private static Object getFor(Class<?> type, Object source) {
-        Object o = fieldFor(type, source);
-
-        if (o != null) {
-            return o;
-        }
-
-        return invokeFor(type, source);
-    }
-
-    private static Object fieldFor(Class<?> returns, Object in) {
-        return fieldForClass(returns, in.getClass(), in);
-    }
-
-    private static Object invokeFor(Class<?> returns, Object in) {
-        for (Method i : in.getClass().getMethods()) {
-            if (i.getReturnType().equals(returns)) {
-                i.setAccessible(true);
-                try {
-                    Iris.debug("[NMS] Found " + returns.getSimpleName() + " in " + in.getClass().getSimpleName() + "." + i.getName() + "()");
-                    return i.invoke(in);
-                } catch (Throwable e) {
-                    e.printStackTrace();
-                }
-            }
-        }
-
-        return null;
-    }
-
-    @SuppressWarnings("unchecked")
-    private static <T> T fieldForClass(Class<T> returnType, Class<?> sourceType, Object in) {
-        for (Field i : sourceType.getDeclaredFields()) {
-            if (i.getType().equals(returnType)) {
-                i.setAccessible(true);
-                try {
-                    Iris.debug("[NMS] Found " + returnType.getSimpleName() + " in " + sourceType.getSimpleName() + "." + i.getName());
-                    return (T) i.get(in);
-                } catch (IllegalAccessException e) {
-                    e.printStackTrace();
-                }
-            }
-        }
-        return null;
-    }
-
-    private KMap<String, Holder<Biome>> fillCustomBiomes(Registry<Biome> customRegistry, Engine engine) {
-        KMap<String, Holder<Biome>> m = new KMap<>();
-
-        for (IrisBiome i : engine.getAllBiomes()) {
-            if (i.isCustom()) {
-                for (IrisBiomeCustom j : i.getCustomDerivitives()) {
-                    m.put(j.getId(), customRegistry.getHolder(customRegistry.getResourceKey(customRegistry
-                            .get(new ResourceLocation(engine.getDimension().getLoadKey() + ":" + j.getId()))).get()).get());
-                }
-            }
-        }
-
-        return m;
-    }
-
-    private RegistryAccess registry() {
-        return registryAccess.aquire(() -> (RegistryAccess) getFor(RegistryAccess.Frozen.class, ((CraftServer) Bukkit.getServer()).getHandle().getServer()));
-    }
-
-    @Override
-    protected Codec<? extends BiomeSource> codec() {
-        throw new UnsupportedOperationException("Not supported");
-    }
-
-    @Override
-    public Holder<Biome> getNoiseBiome(int x, int y, int z, Climate.Sampler sampler) {
-        int m = (y - engine.getMinHeight()) << 2;
-        IrisBiome ib = engine.getComplex().getTrueBiomeStream().get(x << 2, z << 2);
-        if (ib.isCustom()) {
-            return customBiomes.get(ib.getCustomBiome(rng, x << 2, m, z << 2).getId());
-        } else {
-            org.bukkit.block.Biome v = ib.getSkyBiome(rng, x << 2, m, z << 2);
-            return CraftBlock.biomeToBiomeBase(biomeRegistry, v);
-        }
-    }
-}

nms/v1_19_R1/src/main/java/com/volmit/iris/core/nms/v1_19_R1/IrisChunkGenerator.java

@@ -1,257 +0,0 @@
-package com.volmit.iris.core.nms.v1_19_R1;
-
-import com.mojang.datafixers.util.Pair;
-import com.mojang.serialization.Codec;
-import com.volmit.iris.Iris;
-import com.volmit.iris.engine.framework.Engine;
-import com.volmit.iris.engine.framework.ResultLocator;
-import com.volmit.iris.engine.framework.WrongEngineBroException;
-import com.volmit.iris.engine.object.IrisJigsawStructure;
-import com.volmit.iris.engine.object.IrisJigsawStructurePlacement;
-import com.volmit.iris.util.collection.KList;
-import com.volmit.iris.util.collection.KMap;
-import com.volmit.iris.util.collection.KSet;
-import com.volmit.iris.util.mantle.MantleFlag;
-import com.volmit.iris.util.math.Position2;
-import com.volmit.iris.util.reflect.WrappedField;
-import net.minecraft.core.*;
-import net.minecraft.resources.ResourceKey;
-import net.minecraft.resources.ResourceLocation;
-import net.minecraft.server.level.ServerLevel;
-import net.minecraft.server.level.WorldGenRegion;
-import net.minecraft.tags.TagKey;
-import net.minecraft.util.random.WeightedRandomList;
-import net.minecraft.world.entity.MobCategory;
-import net.minecraft.world.level.LevelHeightAccessor;
-import net.minecraft.world.level.NoiseColumn;
-import net.minecraft.world.level.StructureManager;
-import net.minecraft.world.level.WorldGenLevel;
-import net.minecraft.world.level.biome.Biome;
-import net.minecraft.world.level.biome.BiomeManager;
-import net.minecraft.world.level.biome.BiomeSource;
-import net.minecraft.world.level.biome.MobSpawnSettings;
-import net.minecraft.world.level.chunk.ChunkAccess;
-import net.minecraft.world.level.chunk.ChunkGenerator;
-import net.minecraft.world.level.levelgen.GenerationStep;
-import net.minecraft.world.level.levelgen.Heightmap;
-import net.minecraft.world.level.levelgen.RandomState;
-import net.minecraft.world.level.levelgen.blending.Blender;
-import net.minecraft.world.level.levelgen.structure.Structure;
-import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemplateManager;
-import org.bukkit.World;
-import org.bukkit.craftbukkit.v1_19_R1.CraftWorld;
-import org.bukkit.craftbukkit.v1_19_R1.generator.CustomChunkGenerator;
-
-import javax.annotation.Nullable;
-import java.lang.reflect.Field;
-import java.util.List;
-import java.util.Objects;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.ExecutionException;
-import java.util.concurrent.Executor;
-
-public class IrisChunkGenerator extends CustomChunkGenerator {
-    private static final WrappedField<ChunkGenerator, BiomeSource> BIOME_SOURCE;
-    private final ChunkGenerator delegate;
-    private final Engine engine;
-    private final KMap<ResourceKey<Structure>, KSet<String>> structures = new KMap<>();
-
-    public IrisChunkGenerator(ChunkGenerator delegate, long seed, Engine engine, World world) {
-        super(((CraftWorld) world).getHandle(), edit(delegate, new CustomBiomeSource(seed, engine, world)), null);
-        this.delegate = delegate;
-        this.engine = engine;
-        var dimension = engine.getDimension();
-
-        KSet<IrisJigsawStructure> placements = new KSet<>();
-        addAll(dimension.getJigsawStructures(), placements);
-        for (var region : dimension.getAllRegions(engine)) {
-            addAll(region.getJigsawStructures(), placements);
-            for (var biome : region.getAllBiomes(engine))
-                addAll(biome.getJigsawStructures(), placements);
-        }
-        var stronghold = dimension.getStronghold();
-        if (stronghold != null)
-            placements.add(engine.getData().getJigsawStructureLoader().load(stronghold));
-        placements.removeIf(Objects::isNull);
-
-        var registry = ((CraftWorld) world).getHandle().registryAccess().registry(Registry.STRUCTURE_REGISTRY).orElseThrow();
-        for (var s : placements) {
-            try {
-                String raw = s.getStructureKey();
-                if (raw == null) continue;
-                boolean tag = raw.startsWith("#");
-                if (tag) raw = raw.substring(1);
-
-                var location = new ResourceLocation(raw);
-                if (!tag) {
-                    structures.computeIfAbsent(ResourceKey.create(Registry.STRUCTURE_REGISTRY, location), k -> new KSet<>()).add(s.getLoadKey());
-                    continue;
-                }
-
-                var key = TagKey.create(Registry.STRUCTURE_REGISTRY, location);
-                var set = registry.getTag(key).orElse(null);
-                if (set == null) {
-                    Iris.error("Could not find structure tag: " + raw);
-                    continue;
-                }
-                for (var holder : set) {
-                    var resourceKey = holder.unwrapKey().orElse(null);
-                    if (resourceKey == null) continue;
-                    structures.computeIfAbsent(resourceKey, k -> new KSet<>()).add(s.getLoadKey());
-                }
-            } catch (Throwable e) {
-                Iris.error("Failed to load structure: " + s.getLoadKey());
-                e.printStackTrace();
-            }
-        }
-    }
-
-    private void addAll(KList<IrisJigsawStructurePlacement> placements, KSet<IrisJigsawStructure> structures) {
-        if (placements == null) return;
-        placements.stream()
-                .map(IrisJigsawStructurePlacement::getStructure)
-                .map(engine.getData().getJigsawStructureLoader()::load)
-                .filter(Objects::nonNull)
-                .forEach(structures::add);
-    }
-
-    @Override
-    public @Nullable Pair<BlockPos, Holder<Structure>> findNearestMapStructure(ServerLevel level, HolderSet<Structure> holders, BlockPos pos, int radius, boolean findUnexplored) {
-        if (engine.getDimension().isDisableExplorerMaps())
-            return null;
-
-        KMap<String, Holder<Structure>> structures = new KMap<>();
-        for (var holder : holders) {
-            if (holder == null) continue;
-            var key = holder.unwrapKey().orElse(null);
-            var set = this.structures.get(key);
-            if (set == null) continue;
-            for (var structure : set) {
-                structures.put(structure, holder);
-            }
-        }
-        if (structures.isEmpty())
-            return null;
-
-        var locator = ResultLocator.locateStructure(structures.keySet())
-                .then((e, p , s) -> structures.get(s.getLoadKey()));
-        if (findUnexplored)
-            locator = locator.then((e, p, s) -> e.getMantle().getMantle().getChunk(p.getX(), p.getZ()).isFlagged(MantleFlag.DISCOVERED) ? null : s);
-
-        try {
-            var result = locator.find(engine, new Position2(pos.getX() >> 4, pos.getZ() >> 4), radius * 10L, i -> {}, false).get();
-            if (result == null) return null;
-            var blockPos = new BlockPos(result.getBlockX(), 0, result.getBlockZ());
-            return Pair.of(blockPos, result.obj());
-        } catch (WrongEngineBroException | ExecutionException | InterruptedException e) {
-            return null;
-        }
-    }
-
-    @Override
-    protected Codec<? extends ChunkGenerator> codec() {
-        return Codec.unit(null);
-    }
-
-    @Override
-    public ChunkGenerator getDelegate() {
-        if (delegate instanceof CustomChunkGenerator chunkGenerator)
-            return chunkGenerator.getDelegate();
-        return delegate;
-    }
-
-    @Override
-    public int getMinY() {
-        return delegate.getMinY();
-    }
-
-    @Override
-    public int getSeaLevel() {
-        return delegate.getSeaLevel();
-    }
-
-    @Override
-    public void createStructures(RegistryAccess iregistrycustom, RandomState randomstate, StructureManager structuremanager, ChunkAccess ichunkaccess, StructureTemplateManager structuretemplatemanager, long i) {
-        delegate.createStructures(iregistrycustom, randomstate, structuremanager, ichunkaccess, structuretemplatemanager, i);
-    }
-
-    @Override
-    public void buildSurface(WorldGenRegion regionlimitedworldaccess, StructureManager structuremanager, RandomState randomstate, ChunkAccess ichunkaccess) {
-        delegate.buildSurface(regionlimitedworldaccess, structuremanager, randomstate, ichunkaccess);
-    }
-
-    @Override
-    public void applyCarvers(WorldGenRegion regionlimitedworldaccess, long seed, RandomState randomstate, BiomeManager biomemanager, StructureManager structuremanager, ChunkAccess ichunkaccess, GenerationStep.Carving worldgenstage_features) {
-        delegate.applyCarvers(regionlimitedworldaccess, seed, randomstate, biomemanager, structuremanager, ichunkaccess, worldgenstage_features);
-    }
-
-    @Override
-    public CompletableFuture<ChunkAccess> fillFromNoise(Executor executor, Blender blender, RandomState randomstate, StructureManager structuremanager, ChunkAccess ichunkaccess) {
-        return delegate.fillFromNoise(executor, blender, randomstate, structuremanager, ichunkaccess);
-    }
-
-    @Override
-    public int getBaseHeight(int i, int j, Heightmap.Types heightmap_type, LevelHeightAccessor levelheightaccessor, RandomState randomstate) {
-        return delegate.getBaseHeight(i, j, heightmap_type, levelheightaccessor, randomstate);
-    }
-
-    @Override
-    public WeightedRandomList<MobSpawnSettings.SpawnerData> getMobsAt(Holder<Biome> holder, StructureManager structuremanager, MobCategory enumcreaturetype, BlockPos blockposition) {
-        return delegate.getMobsAt(holder, structuremanager, enumcreaturetype, blockposition);
-    }
-
-    @Override
-    public void applyBiomeDecoration(WorldGenLevel generatoraccessseed, ChunkAccess ichunkaccess, StructureManager structuremanager) {
-        delegate.applyBiomeDecoration(generatoraccessseed, ichunkaccess, structuremanager);
-    }
-
-    @Override
-    public void addDebugScreenInfo(List<String> list, RandomState randomstate, BlockPos blockposition) {
-        delegate.addDebugScreenInfo(list, randomstate, blockposition);
-    }
-
-    @Override
-    public void spawnOriginalMobs(WorldGenRegion regionlimitedworldaccess) {
-        delegate.spawnOriginalMobs(regionlimitedworldaccess);
-    }
-
-    @Override
-    public int getSpawnHeight(LevelHeightAccessor levelheightaccessor) {
-        return delegate.getSpawnHeight(levelheightaccessor);
-    }
-
-    @Override
-    public int getGenDepth() {
-        return delegate.getGenDepth();
-    }
-
-    @Override
-    public NoiseColumn getBaseColumn(int i, int j, LevelHeightAccessor levelheightaccessor, RandomState randomstate) {
-        return delegate.getBaseColumn(i, j, levelheightaccessor, randomstate);
-    }
-
-    static {
-        Field biomeSource = null;
-        for (Field field : ChunkGenerator.class.getDeclaredFields()) {
-            if (!field.getType().equals(BiomeSource.class))
-                continue;
-            biomeSource = field;
-            break;
-        }
-        if (biomeSource == null)
-            throw new RuntimeException("Could not find biomeSource field in ChunkGenerator!");
-        BIOME_SOURCE = new WrappedField<>(ChunkGenerator.class, biomeSource.getName());
-    }
-
-    private static ChunkGenerator edit(ChunkGenerator generator, BiomeSource source) {
-        try {
-            BIOME_SOURCE.set(generator, source);
-            if (generator instanceof CustomChunkGenerator custom)
-                BIOME_SOURCE.set(custom.getDelegate(), source);
-
-            return generator;
-        } catch (IllegalAccessException e) {
-            throw new RuntimeException(e);
-        }
-    }
-}

nms/v1_19_R1/src/main/java/com/volmit/iris/core/nms/v1_19_R1/NMSBinding.java

@@ -1,626 +0,0 @@
-package com.volmit.iris.core.nms.v1_19_R1;
-
-import java.awt.Color;
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.DataInputStream;
-import java.io.DataOutputStream;
-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-import java.lang.reflect.Modifier;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map;
-import java.util.Vector;
-import java.util.concurrent.atomic.AtomicInteger;
-
-import com.mojang.datafixers.util.Pair;
-import com.volmit.iris.core.nms.container.BiomeColor;
-import com.volmit.iris.util.scheduling.J;
-import net.minecraft.nbt.*;
-import net.minecraft.nbt.Tag;
-import net.minecraft.server.commands.data.BlockDataAccessor;
-import net.minecraft.tags.TagKey;
-import net.minecraft.world.level.LevelReader;
-import net.minecraft.world.level.block.EntityBlock;
-import org.bukkit.*;
-import org.bukkit.block.Biome;
-import org.bukkit.block.data.BlockData;
-import org.bukkit.craftbukkit.v1_19_R1.CraftChunk;
-import org.bukkit.craftbukkit.v1_19_R1.CraftServer;
-import org.bukkit.craftbukkit.v1_19_R1.CraftWorld;
-import org.bukkit.craftbukkit.v1_19_R1.block.CraftBlock;
-import org.bukkit.craftbukkit.v1_19_R1.block.CraftBlockState;
-import org.bukkit.craftbukkit.v1_19_R1.block.CraftBlockStates;
-import org.bukkit.craftbukkit.v1_19_R1.block.data.CraftBlockData;
-import org.bukkit.craftbukkit.v1_19_R1.entity.CraftDolphin;
-import org.bukkit.craftbukkit.v1_19_R1.inventory.CraftItemStack;
-import org.bukkit.entity.Dolphin;
-import org.bukkit.entity.Entity;
-import org.bukkit.event.entity.CreatureSpawnEvent;
-import org.bukkit.generator.ChunkGenerator;
-import org.bukkit.inventory.ItemStack;
-import org.jetbrains.annotations.Contract;
-import org.jetbrains.annotations.NotNull;
-
-import com.mojang.brigadier.exceptions.CommandSyntaxException;
-import com.volmit.iris.Iris;
-import com.volmit.iris.core.nms.INMSBinding;
-import com.volmit.iris.engine.data.cache.AtomicCache;
-import com.volmit.iris.engine.framework.Engine;
-import com.volmit.iris.util.collection.KList;
-import com.volmit.iris.util.collection.KMap;
-import com.volmit.iris.util.hunk.Hunk;
-import com.volmit.iris.util.json.JSONObject;
-import com.volmit.iris.util.mantle.Mantle;
-import com.volmit.iris.util.math.Vector3d;
-import com.volmit.iris.util.matter.MatterBiomeInject;
-import com.volmit.iris.util.nbt.io.NBTUtil;
-import com.volmit.iris.util.nbt.mca.NBTWorld;
-import com.volmit.iris.util.nbt.mca.palette.*;
-import com.volmit.iris.util.nbt.tag.CompoundTag;
-
-import it.unimi.dsi.fastutil.objects.Object2IntMap;
-import net.minecraft.core.BlockPos;
-import net.minecraft.core.Holder;
-import net.minecraft.core.Registry;
-import net.minecraft.core.RegistryAccess;
-import net.minecraft.resources.ResourceLocation;
-import net.minecraft.server.level.ServerLevel;
-import net.minecraft.world.entity.EntityType;
-import net.minecraft.world.level.biome.BiomeSource;
-import net.minecraft.world.level.block.Block;
-import net.minecraft.world.level.block.entity.BlockEntity;
-import net.minecraft.world.level.block.state.BlockState;
-import net.minecraft.world.level.chunk.ChunkAccess;
-import net.minecraft.world.level.chunk.LevelChunk;
-import sun.misc.Unsafe;
-
-public class NMSBinding implements INMSBinding {
-    private final KMap<Biome, Object> baseBiomeCache = new KMap<>();
-    private final BlockData AIR = Material.AIR.createBlockData();
-    private final AtomicCache<MCAIdMap<net.minecraft.world.level.biome.Biome>> biomeMapCache = new AtomicCache<>();
-    private final AtomicCache<MCAIdMapper<BlockState>> registryCache = new AtomicCache<>();
-    private final AtomicCache<MCAPalette<BlockState>> globalCache = new AtomicCache<>();
-    private final AtomicCache<RegistryAccess> registryAccess = new AtomicCache<>();
-    private final AtomicCache<Method> byIdRef = new AtomicCache<>();
-    private Field biomeStorageCache = null;
-
-    private static Object getFor(Class<?> type, Object source) {
-        Object o = fieldFor(type, source);
-
-        if (o != null) {
-            return o;
-        }
-
-        return invokeFor(type, source);
-    }
-
-    private static Object invokeFor(Class<?> returns, Object in) {
-        for (Method i : in.getClass().getMethods()) {
-            if (i.getReturnType().equals(returns)) {
-                i.setAccessible(true);
-                try {
-                    Iris.debug("[NMS] Found " + returns.getSimpleName() + " in " + in.getClass().getSimpleName() + "." + i.getName() + "()");
-                    return i.invoke(in);
-                } catch (Throwable e) {
-                    e.printStackTrace();
-                }
-            }
-        }
-
-        return null;
-    }
-
-    private static Object fieldFor(Class<?> returns, Object in) {
-        return fieldForClass(returns, in.getClass(), in);
-    }
-
-    @SuppressWarnings("unchecked")
-    private static <T> T fieldForClass(Class<T> returnType, Class<?> sourceType, Object in) {
-        for (Field i : sourceType.getDeclaredFields()) {
-            if (i.getType().equals(returnType)) {
-                i.setAccessible(true);
-                try {
-                    Iris.debug("[NMS] Found " + returnType.getSimpleName() + " in " + sourceType.getSimpleName() + "." + i.getName());
-                    return (T) i.get(in);
-                } catch (IllegalAccessException e) {
-                    e.printStackTrace();
-                }
-            }
-        }
-        return null;
-    }
-
-    private static Class<?> getClassType(Class<?> type, int ordinal) {
-        return type.getDeclaredClasses()[ordinal];
-    }
-
-    @Override
-    public boolean hasTile(Material material) {
-        return !CraftBlockState.class.equals(CraftBlockStates.getBlockStateType(material));
-    }
-
-    @Override
-    public boolean hasTile(Location l) {
-        return ((CraftWorld) l.getWorld()).getHandle().getBlockEntity(new BlockPos(l.getBlockX(), l.getBlockY(), l.getBlockZ()), false) != null;
-    }
-
-    @Override
-    @SuppressWarnings("unchecked")
-    public KMap<String, Object> serializeTile(Location location) {
-        BlockEntity e = ((CraftWorld) location.getWorld()).getHandle().getBlockEntity(new BlockPos(location.getBlockX(), location.getBlockY(), location.getBlockZ()), false);
-
-        if (e == null) {
-            return null;
-        }
-
-        net.minecraft.nbt.CompoundTag tag = e.saveWithoutMetadata();
-        return (KMap<String, Object>) convertFromTag(tag, 0, 64);
-    }
-
-    @Contract(value = "null, _, _ -> null", pure = true)
-    private Object convertFromTag(net.minecraft.nbt.Tag tag, int depth, int maxDepth) {
-        if (tag == null || depth > maxDepth) return null;
-        if (tag instanceof CollectionTag<?> collection) {
-            KList<Object> list = new KList<>();
-
-            for (Object i : collection) {
-                if (i instanceof net.minecraft.nbt.Tag t)
-                    list.add(convertFromTag(t, depth + 1, maxDepth));
-                else list.add(i);
-            }
-            return list;
-        }
-        if (tag instanceof net.minecraft.nbt.CompoundTag compound) {
-            KMap<String, Object> map = new KMap<>();
-
-            for (String key : compound.getAllKeys()) {
-                var child = compound.get(key);
-                if (child == null) continue;
-                var value = convertFromTag(child, depth + 1, maxDepth);
-                if (value == null) continue;
-                map.put(key, value);
-            }
-            return map;
-        }
-        if (tag instanceof NumericTag numeric)
-            return numeric.getAsNumber();
-        return tag.getAsString();
-    }
-
-    @Override
-    public void deserializeTile(KMap<String, Object> map, Location pos) {
-        net.minecraft.nbt.CompoundTag tag = (net.minecraft.nbt.CompoundTag) convertToTag(map, 0, 64);
-        var level = ((CraftWorld) pos.getWorld()).getHandle();
-        var blockPos = new BlockPos(pos.getBlockX(), pos.getBlockY(), pos.getBlockZ());
-        J.s(() -> merge(level, blockPos, tag));
-    }
-
-    private void merge(ServerLevel level, BlockPos blockPos, net.minecraft.nbt.CompoundTag tag) {
-        var blockEntity = level.getBlockEntity(blockPos);
-        if (blockEntity == null) {
-            Iris.warn("[NMS] BlockEntity not found at " + blockPos);
-            var state = level.getBlockState(blockPos);
-            if (!state.hasBlockEntity())
-                return;
-
-            blockEntity = ((EntityBlock) state.getBlock())
-                    .newBlockEntity(blockPos, state);
-        }
-        var accessor = new BlockDataAccessor(blockEntity, blockPos);
-        accessor.setData(tag.merge(accessor.getData()));
-    }
-
-    private Tag convertToTag(Object object, int depth, int maxDepth) {
-        if (object == null || depth > maxDepth) return EndTag.INSTANCE;
-        if (object instanceof Map<?,?> map) {
-            var tag = new net.minecraft.nbt.CompoundTag();
-            for (var i : map.entrySet()) {
-                tag.put(i.getKey().toString(), convertToTag(i.getValue(), depth + 1, maxDepth));
-            }
-            return tag;
-        }
-        if (object instanceof List<?> list) {
-            var tag = new net.minecraft.nbt.ListTag();
-            for (var i : list) {
-                tag.add(convertToTag(i, depth + 1, maxDepth));
-            }
-            return tag;
-        }
-        if (object instanceof Byte number) return ByteTag.valueOf(number);
-        if (object instanceof Short number) return ShortTag.valueOf(number);
-        if (object instanceof Integer number) return IntTag.valueOf(number);
-        if (object instanceof Long number) return LongTag.valueOf(number);
-        if (object instanceof Float number) return FloatTag.valueOf(number);
-        if (object instanceof Double number) return DoubleTag.valueOf(number);
-        if (object instanceof String string) return StringTag.valueOf(string);
-        return EndTag.INSTANCE;
-    }
-
-    @Override
-    public CompoundTag serializeEntity(Entity location) {
-        return null;// TODO:
-    }
-
-    @Override
-    public Entity deserializeEntity(CompoundTag s, Location newPosition) {
-        return null;// TODO:
-    }
-
-    @Override
-    public boolean supportsCustomHeight() {
-        return true;
-    }
-
-    private RegistryAccess registry() {
-        return registryAccess.aquire(() -> (RegistryAccess) getFor(RegistryAccess.Frozen.class, ((CraftServer) Bukkit.getServer()).getHandle().getServer()));
-    }
-
-    private Registry<net.minecraft.world.level.biome.Biome> getCustomBiomeRegistry() {
-        return registry().registry(Registry.BIOME_REGISTRY).orElse(null);
-    }
-
-    private Registry<Block> getBlockRegistry() {
-        return registry().registry(Registry.BLOCK_REGISTRY).orElse(null);
-    }
-
-    @Override
-    public Object getBiomeBaseFromId(int id) {
-        return getCustomBiomeRegistry().getHolder(id);
-    }
-
-    @Override
-    public int getMinHeight(World world) {
-        return world.getMinHeight();
-    }
-
-    @Override
-    public boolean supportsCustomBiomes() {
-        return true;
-    }
-
-    @Override
-    public int getTrueBiomeBaseId(Object biomeBase) {
-        return getCustomBiomeRegistry().getId(((Holder<net.minecraft.world.level.biome.Biome>) biomeBase).value());
-    }
-
-    @Override
-    public Object getTrueBiomeBase(Location location) {
-        return ((CraftWorld) location.getWorld()).getHandle().getBiome(new BlockPos(location.getBlockX(), location.getBlockY(), location.getBlockZ()));
-    }
-
-    @Override
-    public String getTrueBiomeBaseKey(Location location) {
-        return getKeyForBiomeBase(getTrueBiomeBase(location));
-    }
-
-    @Override
-    public Object getCustomBiomeBaseFor(String mckey) {
-        return getCustomBiomeRegistry().get(new ResourceLocation(mckey));
-    }
-
-    @Override
-    public Object getCustomBiomeBaseHolderFor(String mckey) {
-        return getCustomBiomeRegistry().getHolder(getTrueBiomeBaseId(getCustomBiomeRegistry().get(new ResourceLocation(mckey)))).get();
-    }
-
-    public int getBiomeBaseIdForKey(String key) {
-        return getCustomBiomeRegistry().getId(getCustomBiomeRegistry().get(new ResourceLocation(key)));
-    }
-
-    @Override
-    public String getKeyForBiomeBase(Object biomeBase) {
-        return getCustomBiomeRegistry().getKey((net.minecraft.world.level.biome.Biome) biomeBase).getPath(); // something, not something:something
-    }
-
-    @Override
-    public Object getBiomeBase(World world, Biome biome) {
-        return CraftBlock.biomeToBiomeBase(((CraftWorld) world).getHandle()
-                .registryAccess().registry(Registry.BIOME_REGISTRY).orElse(null), biome);
-    }
-
-    @Override
-    public Object getBiomeBase(Object registry, Biome biome) {
-        Object v = baseBiomeCache.get(biome);
-
-        if (v != null) {
-            return v;
-        }
-        //noinspection unchecked
-        v = CraftBlock.biomeToBiomeBase((Registry<net.minecraft.world.level.biome.Biome>) registry, biome);
-        if (v == null) {
-            // Ok so there is this new biome name called "CUSTOM" in Paper's new releases.
-            // But, this does NOT exist within CraftBukkit which makes it return an error.
-            // So, we will just return the ID that the plains biome returns instead.
-            //noinspection unchecked
-            return CraftBlock.biomeToBiomeBase((Registry<net.minecraft.world.level.biome.Biome>) registry, Biome.PLAINS);
-        }
-        baseBiomeCache.put(biome, v);
-        return v;
-    }
-
-    @Override
-    public KList<Biome> getBiomes() {
-        return new KList<>(Biome.values()).qdel(Biome.CUSTOM);
-    }
-
-    @Override
-    public boolean isBukkit() {
-        return true;
-    }
-
-    @Override
-    public int getBiomeId(Biome biome) {
-        for (World i : Bukkit.getWorlds()) {
-            if (i.getEnvironment().equals(World.Environment.NORMAL)) {
-                Registry<net.minecraft.world.level.biome.Biome> registry = ((CraftWorld) i).getHandle().registryAccess().registry(Registry.BIOME_REGISTRY).orElse(null);
-                return registry.getId((net.minecraft.world.level.biome.Biome) getBiomeBase(registry, biome));
-            }
-        }
-
-        return biome.ordinal();
-    }
-
-    private MCAIdMap<net.minecraft.world.level.biome.Biome> getBiomeMapping() {
-        return biomeMapCache.aquire(() -> new MCAIdMap<>() {
-            @NotNull
-            @Override
-            public Iterator<net.minecraft.world.level.biome.Biome> iterator() {
-                return getCustomBiomeRegistry().iterator();
-            }
-
-            @Override
-            public int getId(net.minecraft.world.level.biome.Biome paramT) {
-                return getCustomBiomeRegistry().getId(paramT);
-            }
-
-            @Override
-            public net.minecraft.world.level.biome.Biome byId(int paramInt) {
-                return (net.minecraft.world.level.biome.Biome) getBiomeBaseFromId(paramInt);
-            }
-        });
-    }
-
-    @NotNull
-    private MCABiomeContainer getBiomeContainerInterface(MCAIdMap<net.minecraft.world.level.biome.Biome> biomeMapping, MCAChunkBiomeContainer<net.minecraft.world.level.biome.Biome> base) {
-        return new MCABiomeContainer() {
-            @Override
-            public int[] getData() {
-                return base.writeBiomes();
-            }
-
-            @Override
-            public void setBiome(int x, int y, int z, int id) {
-                base.setBiome(x, y, z, biomeMapping.byId(id));
-            }
-
-            @Override
-            public int getBiome(int x, int y, int z) {
-                return biomeMapping.getId(base.getBiome(x, y, z));
-            }
-        };
-    }
-
-    @Override
-    public MCABiomeContainer newBiomeContainer(int min, int max) {
-        MCAChunkBiomeContainer<net.minecraft.world.level.biome.Biome> base = new MCAChunkBiomeContainer<>(getBiomeMapping(), min, max);
-        return getBiomeContainerInterface(getBiomeMapping(), base);
-    }
-
-    @Override
-    public MCABiomeContainer newBiomeContainer(int min, int max, int[] data) {
-        MCAChunkBiomeContainer<net.minecraft.world.level.biome.Biome> base = new MCAChunkBiomeContainer<>(getBiomeMapping(), min, max, data);
-        return getBiomeContainerInterface(getBiomeMapping(), base);
-    }
-
-    @Override
-    public int countCustomBiomes() {
-        AtomicInteger a = new AtomicInteger(0);
-
-        getCustomBiomeRegistry().keySet().forEach((i) -> {
-            if (i.getNamespace().equals("minecraft")) {
-                return;
-            }
-
-            a.incrementAndGet();
-            Iris.debug("Custom Biome: " + i);
-        });
-
-        return a.get();
-    }
-
-    public boolean supportsDataPacks() {
-        return true;
-    }
-
-    public void setBiomes(int cx, int cz, World world, Hunk<Object> biomes) {
-        LevelChunk c = ((CraftWorld) world).getHandle().getChunk(cx, cz);
-        biomes.iterateSync((x, y, z, b) -> c.setBiome(x, y, z, (Holder<net.minecraft.world.level.biome.Biome>) b));
-        c.setUnsaved(true);
-    }
-
-    @Override
-    public void forceBiomeInto(int x, int y, int z, Object somethingVeryDirty, ChunkGenerator.BiomeGrid chunk) {
-        try {
-            ChunkAccess s = (ChunkAccess) getFieldForBiomeStorage(chunk).get(chunk);
-            Holder<net.minecraft.world.level.biome.Biome> biome = (Holder<net.minecraft.world.level.biome.Biome>) somethingVeryDirty;
-            s.setBiome(x, y, z, biome);
-        } catch (IllegalAccessException e) {
-            Iris.reportError(e);
-            e.printStackTrace();
-        }
-    }
-
-    private Field getFieldForBiomeStorage(Object storage) {
-        Field f = biomeStorageCache;
-
-        if (f != null) {
-            return f;
-        }
-        try {
-            f = storage.getClass().getDeclaredField("biome");
-            f.setAccessible(true);
-            return f;
-        } catch (Throwable e) {
-            Iris.reportError(e);
-            e.printStackTrace();
-            Iris.error(storage.getClass().getCanonicalName());
-        }
-
-        biomeStorageCache = f;
-        return null;
-    }
-
-    @Override
-    public MCAPaletteAccess createPalette() {
-        MCAIdMapper<BlockState> registry = registryCache.aquireNasty(() -> {
-            Field cf = net.minecraft.core.IdMapper.class.getDeclaredField("tToId");
-            Field df = net.minecraft.core.IdMapper.class.getDeclaredField("idToT");
-            Field bf = net.minecraft.core.IdMapper.class.getDeclaredField("nextId");
-            cf.setAccessible(true);
-            df.setAccessible(true);
-            bf.setAccessible(true);
-            net.minecraft.core.IdMapper<BlockState> blockData = Block.BLOCK_STATE_REGISTRY;
-            int b = bf.getInt(blockData);
-            Object2IntMap<BlockState> c = (Object2IntMap<BlockState>) cf.get(blockData);
-            List<BlockState> d = (List<BlockState>) df.get(blockData);
-            return new MCAIdMapper<BlockState>(c, d, b);
-        });
-        MCAPalette<BlockState> global = globalCache.aquireNasty(() -> new MCAGlobalPalette<>(registry, ((CraftBlockData) AIR).getState()));
-        MCAPalettedContainer<BlockState> container = new MCAPalettedContainer<>(global, registry,
-                i -> ((CraftBlockData) NBTWorld.getBlockData(i)).getState(),
-                i -> NBTWorld.getCompound(CraftBlockData.fromData(i)),
-                ((CraftBlockData) AIR).getState());
-        return new MCAWrappedPalettedContainer<>(container,
-                i -> NBTWorld.getCompound(CraftBlockData.fromData(i)),
-                i -> ((CraftBlockData) NBTWorld.getBlockData(i)).getState());
-    }
-
-    @Override
-    public void injectBiomesFromMantle(Chunk e, Mantle mantle) {
-        ChunkAccess chunk = ((CraftChunk) e).getHandle();
-        AtomicInteger c = new AtomicInteger();
-        AtomicInteger r = new AtomicInteger();
-        mantle.iterateChunk(e.getX(), e.getZ(), MatterBiomeInject.class, (x, y, z, b) -> {
-            if (b != null) {
-                if (b.isCustom()) {
-                    chunk.setBiome(x, y, z, getCustomBiomeRegistry().getHolder(b.getBiomeId()).get());
-                    c.getAndIncrement();
-                } else {
-                    chunk.setBiome(x, y, z, (Holder<net.minecraft.world.level.biome.Biome>) getBiomeBase(e.getWorld(), b.getBiome()));
-                    r.getAndIncrement();
-                }
-            }
-        });
-    }
-
-    public ItemStack applyCustomNbt(ItemStack itemStack, KMap<String, Object> customNbt) throws IllegalArgumentException {
-        if (customNbt != null && !customNbt.isEmpty()) {
-            net.minecraft.world.item.ItemStack s = CraftItemStack.asNMSCopy(itemStack);
-
-            try {
-                net.minecraft.nbt.CompoundTag tag = TagParser.parseTag((new JSONObject(customNbt)).toString());
-                tag.merge(s.getOrCreateTag());
-                s.setTag(tag);
-            } catch (CommandSyntaxException var5) {
-                throw new IllegalArgumentException(var5);
-            }
-
-            return CraftItemStack.asBukkitCopy(s);
-        } else {
-            return itemStack;
-        }
-    }
-
-    public void inject(long seed, Engine engine, World world) {
-        var chunkMap = ((CraftWorld)world).getHandle().getChunkSource().chunkMap;
-        chunkMap.generator = new IrisChunkGenerator(chunkMap.generator, seed, engine, world);
-    }
-
-    public Vector3d getBoundingbox(org.bukkit.entity.EntityType entity) {
-        Field[] fields = EntityType.class.getDeclaredFields();
-        for (Field field : fields) {
-            if (Modifier.isStatic(field.getModifiers()) && field.getType().equals(EntityType.class)) {
-                try {
-                    EntityType entityType = (EntityType) field.get(null);
-                    if (entityType.getDescriptionId().equals("entity.minecraft." + entity.name().toLowerCase())) {
-                        Vector<Float> v1 = new Vector<>();
-                        v1.add(entityType.getHeight());
-                        entityType.getDimensions();
-                        Vector3d box = new Vector3d( entityType.getWidth(), entityType.getHeight(),  entityType.getWidth());
-                        //System.out.println("Entity Type: " + entityType.getDescriptionId() + ", " + "Height: " + height + ", Width: " + width);
-                        return box;
-                    }
-                } catch (IllegalAccessException e) {
-                    Iris.error("Unable to get entity dimensions!");
-                    e.printStackTrace();
-                }
-            }
-        }
-        return null;
-    }
-
-    @Override
-    public Entity spawnEntity(Location location, org.bukkit.entity.EntityType type, CreatureSpawnEvent.SpawnReason reason) {
-        return ((CraftWorld) location.getWorld()).spawn(location, type.getEntityClass(), null, reason);
-    }
-
-    @Override
-    public Color getBiomeColor(Location location, BiomeColor type) {
-        LevelReader reader = ((CraftWorld) location.getWorld()).getHandle();
-        var holder = reader.getBiome(new BlockPos(location.getBlockX(), location.getBlockY(), location.getBlockZ()));
-        var biome = holder.value();
-        if (biome == null) throw new IllegalArgumentException("Invalid biome: " + holder.unwrapKey().orElse(null));
-
-        int rgba = switch (type) {
-            case FOG -> biome.getFogColor();
-            case WATER -> biome.getWaterColor();
-            case WATER_FOG -> biome.getWaterFogColor();
-            case SKY -> biome.getSkyColor();
-            case FOLIAGE -> biome.getFoliageColor();
-            case GRASS -> biome.getGrassColor(location.getBlockX(), location.getBlockZ());
-        };
-        if (rgba == 0) {
-            if (BiomeColor.FOLIAGE == type && biome.getSpecialEffects().getFoliageColorOverride().isEmpty())
-                return null;
-            if (BiomeColor.GRASS == type && biome.getSpecialEffects().getGrassColorOverride().isEmpty())
-                return null;
-        }
-        return new Color(rgba, true);
-    }
-
-    @Override
-    public KList<String> getStructureKeys() {
-        KList<String> keys = new KList<>();
-
-        var registry = registry().registry(Registry.STRUCTURE_REGISTRY).orElse(null);
-        if (registry == null) return keys;
-        registry.keySet().stream().map(ResourceLocation::toString).forEach(keys::add);
-        registry.getTags()
-                .map(Pair::getFirst)
-                .map(TagKey::location)
-                .map(ResourceLocation::toString)
-                .map(s -> "#" + s)
-                .forEach(keys::add);
-
-        return keys;
-    }
-
-    private static Field getField(Class<?> clazz, Class<?> fieldType) throws NoSuchFieldException {
-        try {
-            for (Field f : clazz.getDeclaredFields()) {
-                if (f.getType().equals(fieldType))
-                    return f;
-            }
-            throw new NoSuchFieldException(fieldType.getName());
-        } catch (NoSuchFieldException var4) {
-            Class<?> superClass = clazz.getSuperclass();
-            if (superClass == null) {
-                throw var4;
-            } else {
-                return getField(superClass, fieldType);
-            }
-        }
-    }
-}

nms/v1_19_R2/src/main/java/com/volmit/iris/core/nms/v1_19_R2/CustomBiomeSource.java

@@ -1,152 +0,0 @@
-package com.volmit.iris.core.nms.v1_19_R2;
-
-import com.mojang.serialization.Codec;
-import com.volmit.iris.Iris;
-import com.volmit.iris.engine.data.cache.AtomicCache;
-import com.volmit.iris.engine.framework.Engine;
-import com.volmit.iris.engine.object.IrisBiome;
-import com.volmit.iris.engine.object.IrisBiomeCustom;
-import com.volmit.iris.util.collection.KMap;
-import com.volmit.iris.util.math.RNG;
-import net.minecraft.core.Holder;
-import net.minecraft.core.Registry;
-import net.minecraft.core.RegistryAccess;
-import net.minecraft.core.registries.Registries;
-import net.minecraft.resources.ResourceLocation;
-import net.minecraft.world.level.biome.Biome;
-import net.minecraft.world.level.biome.BiomeSource;
-import net.minecraft.world.level.biome.Climate;
-import org.bukkit.Bukkit;
-import org.bukkit.World;
-import org.bukkit.craftbukkit.v1_19_R2.CraftServer;
-import org.bukkit.craftbukkit.v1_19_R2.CraftWorld;
-import org.bukkit.craftbukkit.v1_19_R2.block.CraftBlock;
-
-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-import java.util.ArrayList;
-import java.util.List;
-
-public class CustomBiomeSource extends BiomeSource {
-
-    private final long seed;
-    private final Engine engine;
-    private final Registry<Biome> biomeCustomRegistry;
-    private final Registry<Biome> biomeRegistry;
-    private final AtomicCache<RegistryAccess> registryAccess = new AtomicCache<>();
-    private final RNG rng;
-    private final KMap<String, Holder<Biome>> customBiomes;
-
-    public CustomBiomeSource(long seed, Engine engine, World world) {
-        super(getAllBiomes(
-                ((RegistryAccess) getFor(RegistryAccess.Frozen.class, ((CraftServer) Bukkit.getServer()).getHandle().getServer()))
-                        .registry(Registries.BIOME).orElse(null),
-                ((CraftWorld) world).getHandle().registryAccess().registry(Registries.BIOME).orElse(null),
-                engine));
-        this.engine = engine;
-        this.seed = seed;
-        this.biomeCustomRegistry = registry().registry(Registries.BIOME).orElse(null);
-        this.biomeRegistry = ((CraftWorld) world).getHandle().registryAccess().registry(Registries.BIOME).orElse(null);
-        this.rng = new RNG(engine.getSeedManager().getBiome());
-        this.customBiomes = fillCustomBiomes(biomeCustomRegistry, engine);
-    }
-
-    private static List<Holder<Biome>> getAllBiomes(Registry<Biome> customRegistry, Registry<Biome> registry, Engine engine) {
-        List<Holder<Biome>> b = new ArrayList<>();
-
-        for (IrisBiome i : engine.getAllBiomes()) {
-            if (i.isCustom()) {
-                for (IrisBiomeCustom j : i.getCustomDerivitives()) {
-                    b.add(customRegistry.getHolder(customRegistry.getResourceKey(customRegistry
-                            .get(new ResourceLocation(engine.getDimension().getLoadKey() + ":" + j.getId()))).get()).get());
-                }
-            } else {
-                b.add(CraftBlock.biomeToBiomeBase(registry, i.getVanillaDerivative()));
-            }
-        }
-
-        return b;
-    }
-
-    private static Object getFor(Class<?> type, Object source) {
-        Object o = fieldFor(type, source);
-
-        if (o != null) {
-            return o;
-        }
-
-        return invokeFor(type, source);
-    }
-
-    private static Object fieldFor(Class<?> returns, Object in) {
-        return fieldForClass(returns, in.getClass(), in);
-    }
-
-    private static Object invokeFor(Class<?> returns, Object in) {
-        for (Method i : in.getClass().getMethods()) {
-            if (i.getReturnType().equals(returns)) {
-                i.setAccessible(true);
-                try {
-                    Iris.debug("[NMS] Found " + returns.getSimpleName() + " in " + in.getClass().getSimpleName() + "." + i.getName() + "()");
-                    return i.invoke(in);
-                } catch (Throwable e) {
-                    e.printStackTrace();
-                }
-            }
-        }
-
-        return null;
-    }
-
-    @SuppressWarnings("unchecked")
-    private static <T> T fieldForClass(Class<T> returnType, Class<?> sourceType, Object in) {
-        for (Field i : sourceType.getDeclaredFields()) {
-            if (i.getType().equals(returnType)) {
-                i.setAccessible(true);
-                try {
-                    Iris.debug("[NMS] Found " + returnType.getSimpleName() + " in " + sourceType.getSimpleName() + "." + i.getName());
-                    return (T) i.get(in);
-                } catch (IllegalAccessException e) {
-                    e.printStackTrace();
-                }
-            }
-        }
-        return null;
-    }
-
-    private KMap<String, Holder<Biome>> fillCustomBiomes(Registry<Biome> customRegistry, Engine engine) {
-        KMap<String, Holder<Biome>> m = new KMap<>();
-
-        for (IrisBiome i : engine.getAllBiomes()) {
-            if (i.isCustom()) {
-                for (IrisBiomeCustom j : i.getCustomDerivitives()) {
-                    m.put(j.getId(), customRegistry.getHolder(customRegistry.getResourceKey(customRegistry
-                            .get(new ResourceLocation(engine.getDimension().getLoadKey() + ":" + j.getId()))).get()).get());
-                }
-            }
-        }
-
-        return m;
-    }
-
-    private RegistryAccess registry() {
-        return registryAccess.aquire(() -> (RegistryAccess) getFor(RegistryAccess.Frozen.class, ((CraftServer) Bukkit.getServer()).getHandle().getServer()));
-    }
-
-    @Override
-    protected Codec<? extends BiomeSource> codec() {
-        throw new UnsupportedOperationException("Not supported");
-    }
-
-    @Override
-    public Holder<Biome> getNoiseBiome(int x, int y, int z, Climate.Sampler sampler) {
-        int m = (y - engine.getMinHeight()) << 2;
-        IrisBiome ib = engine.getComplex().getTrueBiomeStream().get(x << 2, z << 2);
-        if (ib.isCustom()) {
-            return customBiomes.get(ib.getCustomBiome(rng, x << 2, m, z << 2).getId());
-        } else {
-            org.bukkit.block.Biome v = ib.getSkyBiome(rng, x << 2, m, z << 2);
-            return CraftBlock.biomeToBiomeBase(biomeRegistry, v);
-        }
-    }
-}

nms/v1_19_R2/src/main/java/com/volmit/iris/core/nms/v1_19_R2/IrisChunkGenerator.java

@@ -1,260 +0,0 @@
-package com.volmit.iris.core.nms.v1_19_R2;
-
-import com.mojang.datafixers.util.Pair;
-import com.mojang.serialization.Codec;
-import com.volmit.iris.Iris;
-import com.volmit.iris.engine.framework.Engine;
-import com.volmit.iris.engine.framework.ResultLocator;
-import com.volmit.iris.engine.framework.WrongEngineBroException;
-import com.volmit.iris.engine.object.IrisJigsawStructure;
-import com.volmit.iris.engine.object.IrisJigsawStructurePlacement;
-import com.volmit.iris.util.collection.KList;
-import com.volmit.iris.util.collection.KMap;
-import com.volmit.iris.util.collection.KSet;
-import com.volmit.iris.util.mantle.MantleFlag;
-import com.volmit.iris.util.math.Position2;
-import com.volmit.iris.util.reflect.WrappedField;
-import net.minecraft.core.BlockPos;
-import net.minecraft.core.Holder;
-import net.minecraft.core.HolderSet;
-import net.minecraft.core.RegistryAccess;
-import net.minecraft.core.registries.Registries;
-import net.minecraft.resources.ResourceKey;
-import net.minecraft.resources.ResourceLocation;
-import net.minecraft.server.level.ServerLevel;
-import net.minecraft.server.level.WorldGenRegion;
-import net.minecraft.tags.TagKey;
-import net.minecraft.util.random.WeightedRandomList;
-import net.minecraft.world.entity.MobCategory;
-import net.minecraft.world.level.LevelHeightAccessor;
-import net.minecraft.world.level.NoiseColumn;
-import net.minecraft.world.level.StructureManager;
-import net.minecraft.world.level.WorldGenLevel;
-import net.minecraft.world.level.biome.Biome;
-import net.minecraft.world.level.biome.BiomeManager;
-import net.minecraft.world.level.biome.BiomeSource;
-import net.minecraft.world.level.biome.MobSpawnSettings;
-import net.minecraft.world.level.chunk.ChunkAccess;
-import net.minecraft.world.level.chunk.ChunkGenerator;
-import net.minecraft.world.level.chunk.ChunkGeneratorStructureState;
-import net.minecraft.world.level.levelgen.GenerationStep;
-import net.minecraft.world.level.levelgen.Heightmap;
-import net.minecraft.world.level.levelgen.RandomState;
-import net.minecraft.world.level.levelgen.blending.Blender;
-import net.minecraft.world.level.levelgen.structure.Structure;
-import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemplateManager;
-import org.bukkit.World;
-import org.bukkit.craftbukkit.v1_19_R2.CraftWorld;
-import org.bukkit.craftbukkit.v1_19_R2.generator.CustomChunkGenerator;
-
-import javax.annotation.Nullable;
-import java.lang.reflect.Field;
-import java.util.List;
-import java.util.Objects;
-import java.util.concurrent.*;
-
-public class IrisChunkGenerator extends CustomChunkGenerator {
-    private static final WrappedField<ChunkGenerator, BiomeSource> BIOME_SOURCE;
-    private final ChunkGenerator delegate;
-    private final Engine engine;
-    private final KMap<ResourceKey<Structure>, KSet<String>> structures = new KMap<>();
-
-    public IrisChunkGenerator(ChunkGenerator delegate, long seed, Engine engine, World world) {
-        super(((CraftWorld) world).getHandle(), edit(delegate, new CustomBiomeSource(seed, engine, world)), null);
-        this.delegate = delegate;
-        this.engine = engine;
-        var dimension = engine.getDimension();
-
-        KSet<IrisJigsawStructure> placements = new KSet<>();
-        addAll(dimension.getJigsawStructures(), placements);
-        for (var region : dimension.getAllRegions(engine)) {
-            addAll(region.getJigsawStructures(), placements);
-            for (var biome : region.getAllBiomes(engine))
-                addAll(biome.getJigsawStructures(), placements);
-        }
-        var stronghold = dimension.getStronghold();
-        if (stronghold != null)
-            placements.add(engine.getData().getJigsawStructureLoader().load(stronghold));
-        placements.removeIf(Objects::isNull);
-
-        var registry = ((CraftWorld) world).getHandle().registryAccess().registry(Registries.STRUCTURE).orElseThrow();
-        for (var s : placements) {
-            try {
-                String raw = s.getStructureKey();
-                if (raw == null) continue;
-                boolean tag = raw.startsWith("#");
-                if (tag) raw = raw.substring(1);
-
-                var location = new ResourceLocation(raw);
-                if (!tag) {
-                    structures.computeIfAbsent(ResourceKey.create(Registries.STRUCTURE, location), k -> new KSet<>()).add(s.getLoadKey());
-                    continue;
-                }
-
-                var key = TagKey.create(Registries.STRUCTURE, location);
-                var set = registry.getTag(key).orElse(null);
-                if (set == null) {
-                    Iris.error("Could not find structure tag: " + raw);
-                    continue;
-                }
-                for (var holder : set) {
-                    var resourceKey = holder.unwrapKey().orElse(null);
-                    if (resourceKey == null) continue;
-                    structures.computeIfAbsent(resourceKey, k -> new KSet<>()).add(s.getLoadKey());
-                }
-            } catch (Throwable e) {
-                Iris.error("Failed to load structure: " + s.getLoadKey());
-                e.printStackTrace();
-            }
-        }
-    }
-
-    private void addAll(KList<IrisJigsawStructurePlacement> placements, KSet<IrisJigsawStructure> structures) {
-        if (placements == null) return;
-        placements.stream()
-                .map(IrisJigsawStructurePlacement::getStructure)
-                .map(engine.getData().getJigsawStructureLoader()::load)
-                .filter(Objects::nonNull)
-                .forEach(structures::add);
-    }
-
-    @Override
-    public @Nullable Pair<BlockPos, Holder<Structure>> findNearestMapStructure(ServerLevel level, HolderSet<Structure> holders, BlockPos pos, int radius, boolean findUnexplored) {
-        if (engine.getDimension().isDisableExplorerMaps())
-            return null;
-
-        KMap<String, Holder<Structure>> structures = new KMap<>();
-        for (var holder : holders) {
-            if (holder == null) continue;
-            var key = holder.unwrapKey().orElse(null);
-            var set = this.structures.get(key);
-            if (set == null) continue;
-            for (var structure : set) {
-                structures.put(structure, holder);
-            }
-        }
-        if (structures.isEmpty())
-            return null;
-
-        var locator = ResultLocator.locateStructure(structures.keySet())
-                .then((e, p , s) -> structures.get(s.getLoadKey()));
-        if (findUnexplored)
-            locator = locator.then((e, p, s) -> e.getMantle().getMantle().getChunk(p.getX(), p.getZ()).isFlagged(MantleFlag.DISCOVERED) ? null : s);
-
-        try {
-            var result = locator.find(engine, new Position2(pos.getX() >> 4, pos.getZ() >> 4), radius * 10L, i -> {}, false).get();
-            if (result == null) return null;
-            var blockPos = new BlockPos(result.getBlockX(), 0, result.getBlockZ());
-            return Pair.of(blockPos, result.obj());
-        } catch (WrongEngineBroException | ExecutionException | InterruptedException e) {
-            return null;
-        }
-    }
-
-    @Override
-    protected Codec<? extends ChunkGenerator> codec() {
-        return Codec.unit(null);
-    }
-
-    @Override
-    public ChunkGenerator getDelegate() {
-        if (delegate instanceof CustomChunkGenerator chunkGenerator)
-            return chunkGenerator.getDelegate();
-        return delegate;
-    }
-
-    @Override
-    public int getMinY() {
-        return delegate.getMinY();
-    }
-
-    @Override
-    public int getSeaLevel() {
-        return delegate.getSeaLevel();
-    }
-
-    @Override
-    public void createStructures(RegistryAccess iregistrycustom, ChunkGeneratorStructureState chunkgeneratorstructurestate, StructureManager structuremanager, ChunkAccess ichunkaccess, StructureTemplateManager structuretemplatemanager) {
-        delegate.createStructures(iregistrycustom, chunkgeneratorstructurestate, structuremanager, ichunkaccess, structuretemplatemanager);
-    }
-
-    @Override
-    public void buildSurface(WorldGenRegion regionlimitedworldaccess, StructureManager structuremanager, RandomState randomstate, ChunkAccess ichunkaccess) {
-        delegate.buildSurface(regionlimitedworldaccess, structuremanager, randomstate, ichunkaccess);
-    }
-
-    @Override
-    public void applyCarvers(WorldGenRegion regionlimitedworldaccess, long seed, RandomState randomstate, BiomeManager biomemanager, StructureManager structuremanager, ChunkAccess ichunkaccess, GenerationStep.Carving worldgenstage_features) {
-        delegate.applyCarvers(regionlimitedworldaccess, seed, randomstate, biomemanager, structuremanager, ichunkaccess, worldgenstage_features);
-    }
-
-    @Override
-    public CompletableFuture<ChunkAccess> fillFromNoise(Executor executor, Blender blender, RandomState randomstate, StructureManager structuremanager, ChunkAccess ichunkaccess) {
-        return delegate.fillFromNoise(executor, blender, randomstate, structuremanager, ichunkaccess);
-    }
-
-    @Override
-    public int getBaseHeight(int i, int j, Heightmap.Types heightmap_type, LevelHeightAccessor levelheightaccessor, RandomState randomstate) {
-        return delegate.getBaseHeight(i, j, heightmap_type, levelheightaccessor, randomstate);
-    }
-
-    @Override
-    public WeightedRandomList<MobSpawnSettings.SpawnerData> getMobsAt(Holder<Biome> holder, StructureManager structuremanager, MobCategory enumcreaturetype, BlockPos blockposition) {
-        return delegate.getMobsAt(holder, structuremanager, enumcreaturetype, blockposition);
-    }
-
-    @Override
-    public void applyBiomeDecoration(WorldGenLevel generatoraccessseed, ChunkAccess ichunkaccess, StructureManager structuremanager) {
-        delegate.applyBiomeDecoration(generatoraccessseed, ichunkaccess, structuremanager);
-    }
-
-    @Override
-    public void addDebugScreenInfo(List<String> list, RandomState randomstate, BlockPos blockposition) {
-        delegate.addDebugScreenInfo(list, randomstate, blockposition);
-    }
-
-    @Override
-    public void spawnOriginalMobs(WorldGenRegion regionlimitedworldaccess) {
-        delegate.spawnOriginalMobs(regionlimitedworldaccess);
-    }
-
-    @Override
-    public int getSpawnHeight(LevelHeightAccessor levelheightaccessor) {
-        return delegate.getSpawnHeight(levelheightaccessor);
-    }
-
-    @Override
-    public int getGenDepth() {
-        return delegate.getGenDepth();
-    }
-
-    @Override
-    public NoiseColumn getBaseColumn(int i, int j, LevelHeightAccessor levelheightaccessor, RandomState randomstate) {
-        return delegate.getBaseColumn(i, j, levelheightaccessor, randomstate);
-    }
-
-    static {
-        Field biomeSource = null;
-        for (Field field : ChunkGenerator.class.getDeclaredFields()) {
-            if (!field.getType().equals(BiomeSource.class))
-                continue;
-            biomeSource = field;
-            break;
-        }
-        if (biomeSource == null)
-            throw new RuntimeException("Could not find biomeSource field in ChunkGenerator!");
-        BIOME_SOURCE = new WrappedField<>(ChunkGenerator.class, biomeSource.getName());
-    }
-
-    private static ChunkGenerator edit(ChunkGenerator generator, BiomeSource source) {
-        try {
-            BIOME_SOURCE.set(generator, source);
-            if (generator instanceof CustomChunkGenerator custom)
-                BIOME_SOURCE.set(custom.getDelegate(), source);
-
-            return generator;
-        } catch (IllegalAccessException e) {
-            throw new RuntimeException(e);
-        }
-    }
-}

nms/v1_19_R2/src/main/java/com/volmit/iris/core/nms/v1_19_R2/NMSBinding.java

@@ -1,628 +0,0 @@
-package com.volmit.iris.core.nms.v1_19_R2;
-
-import java.awt.Color;
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.DataInputStream;
-import java.io.DataOutputStream;
-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-import java.lang.reflect.Modifier;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map;
-import java.util.Vector;
-import java.util.concurrent.atomic.AtomicInteger;
-
-import com.mojang.datafixers.util.Pair;
-import com.volmit.iris.core.nms.container.BiomeColor;
-import com.volmit.iris.util.scheduling.J;
-import net.minecraft.nbt.*;
-import net.minecraft.nbt.Tag;
-import net.minecraft.server.commands.data.BlockDataAccessor;
-import net.minecraft.tags.TagKey;
-import net.minecraft.world.level.LevelReader;
-import net.minecraft.world.level.block.EntityBlock;
-import org.bukkit.*;
-import org.bukkit.block.Biome;
-import org.bukkit.block.data.BlockData;
-import org.bukkit.craftbukkit.v1_19_R2.CraftChunk;
-import org.bukkit.craftbukkit.v1_19_R2.CraftServer;
-import org.bukkit.craftbukkit.v1_19_R2.CraftWorld;
-import org.bukkit.craftbukkit.v1_19_R2.block.CraftBlock;
-import org.bukkit.craftbukkit.v1_19_R2.block.CraftBlockState;
-import org.bukkit.craftbukkit.v1_19_R2.block.CraftBlockStates;
-import org.bukkit.craftbukkit.v1_19_R2.block.data.CraftBlockData;
-import org.bukkit.craftbukkit.v1_19_R2.entity.CraftDolphin;
-import org.bukkit.craftbukkit.v1_19_R2.inventory.CraftItemStack;
-import org.bukkit.entity.Dolphin;
-import org.bukkit.entity.Entity;
-import org.bukkit.event.entity.CreatureSpawnEvent;
-import org.bukkit.generator.ChunkGenerator;
-import org.bukkit.inventory.ItemStack;
-import org.jetbrains.annotations.Contract;
-import org.jetbrains.annotations.NotNull;
-
-import com.mojang.brigadier.exceptions.CommandSyntaxException;
-import com.volmit.iris.Iris;
-import com.volmit.iris.core.nms.INMSBinding;
-import com.volmit.iris.engine.data.cache.AtomicCache;
-import com.volmit.iris.engine.framework.Engine;
-import com.volmit.iris.util.collection.KList;
-import com.volmit.iris.util.collection.KMap;
-import com.volmit.iris.util.hunk.Hunk;
-import com.volmit.iris.util.json.JSONObject;
-import com.volmit.iris.util.mantle.Mantle;
-import com.volmit.iris.util.math.Vector3d;
-import com.volmit.iris.util.matter.MatterBiomeInject;
-import com.volmit.iris.util.nbt.io.NBTUtil;
-import com.volmit.iris.util.nbt.mca.NBTWorld;
-import com.volmit.iris.util.nbt.mca.palette.*;
-import com.volmit.iris.util.nbt.tag.CompoundTag;
-
-import it.unimi.dsi.fastutil.objects.Object2IntMap;
-import net.minecraft.core.BlockPos;
-import net.minecraft.core.Holder;
-import net.minecraft.core.Registry;
-import net.minecraft.core.RegistryAccess;
-import net.minecraft.core.registries.Registries;
-import net.minecraft.resources.ResourceLocation;
-import net.minecraft.server.level.ServerLevel;
-import net.minecraft.world.entity.EntityType;
-import net.minecraft.world.level.biome.BiomeSource;
-import net.minecraft.world.level.block.Block;
-import net.minecraft.world.level.block.entity.BlockEntity;
-import net.minecraft.world.level.block.state.BlockState;
-import net.minecraft.world.level.chunk.ChunkAccess;
-import net.minecraft.world.level.chunk.LevelChunk;
-import sun.misc.Unsafe;
-
-public class NMSBinding implements INMSBinding {
-    private final KMap<Biome, Object> baseBiomeCache = new KMap<>();
-    private final BlockData AIR = Material.AIR.createBlockData();
-    private final AtomicCache<MCAIdMap<net.minecraft.world.level.biome.Biome>> biomeMapCache = new AtomicCache<>();
-    private final AtomicCache<MCAIdMapper<BlockState>> registryCache = new AtomicCache<>();
-    private final AtomicCache<MCAPalette<BlockState>> globalCache = new AtomicCache<>();
-    private final AtomicCache<RegistryAccess> registryAccess = new AtomicCache<>();
-    private final AtomicCache<Method> byIdRef = new AtomicCache<>();
-    private Field biomeStorageCache = null;
-
-    private static Object getFor(Class<?> type, Object source) {
-        Object o = fieldFor(type, source);
-
-        if (o != null) {
-            return o;
-        }
-
-        return invokeFor(type, source);
-    }
-
-    private static Object invokeFor(Class<?> returns, Object in) {
-        for (Method i : in.getClass().getMethods()) {
-            if (i.getReturnType().equals(returns)) {
-                i.setAccessible(true);
-                try {
-                    Iris.debug("[NMS] Found " + returns.getSimpleName() + " in " + in.getClass().getSimpleName() + "." + i.getName() + "()");
-                    return i.invoke(in);
-                } catch (Throwable e) {
-                    e.printStackTrace();
-                }
-            }
-        }
-
-        return null;
-    }
-
-    private static Object fieldFor(Class<?> returns, Object in) {
-        return fieldForClass(returns, in.getClass(), in);
-    }
-
-    @SuppressWarnings("unchecked")
-    private static <T> T fieldForClass(Class<T> returnType, Class<?> sourceType, Object in) {
-        for (Field i : sourceType.getDeclaredFields()) {
-            if (i.getType().equals(returnType)) {
-                i.setAccessible(true);
-                try {
-                    Iris.debug("[NMS] Found " + returnType.getSimpleName() + " in " + sourceType.getSimpleName() + "." + i.getName());
-                    return (T) i.get(in);
-                } catch (IllegalAccessException e) {
-                    e.printStackTrace();
-                }
-            }
-        }
-        return null;
-    }
-
-    private static Class<?> getClassType(Class<?> type, int ordinal) {
-        return type.getDeclaredClasses()[ordinal];
-    }
-
-    @Override
-    public boolean hasTile(Material material) {
-        return !CraftBlockState.class.equals(CraftBlockStates.getBlockStateType(material));
-    }
-
-    @Override
-    public boolean hasTile(Location l) {
-        return ((CraftWorld) l.getWorld()).getHandle().getBlockEntity(new BlockPos(l.getBlockX(), l.getBlockY(), l.getBlockZ()), false) != null;
-    }
-
-    @Override
-    @SuppressWarnings("unchecked")
-    public KMap<String, Object> serializeTile(Location location) {
-        BlockEntity e = ((CraftWorld) location.getWorld()).getHandle().getBlockEntity(new BlockPos(location.getBlockX(), location.getBlockY(), location.getBlockZ()), false);
-
-        if (e == null) {
-            return null;
-        }
-
-        net.minecraft.nbt.CompoundTag tag = e.saveWithoutMetadata();
-        return (KMap<String, Object>) convertFromTag(tag, 0, 64);
-    }
-
-    @Contract(value = "null, _, _ -> null", pure = true)
-    private Object convertFromTag(net.minecraft.nbt.Tag tag, int depth, int maxDepth) {
-        if (tag == null || depth > maxDepth) return null;
-        if (tag instanceof CollectionTag<?> collection) {
-            KList<Object> list = new KList<>();
-
-            for (Object i : collection) {
-                if (i instanceof net.minecraft.nbt.Tag t)
-                    list.add(convertFromTag(t, depth + 1, maxDepth));
-                else list.add(i);
-            }
-            return list;
-        }
-        if (tag instanceof net.minecraft.nbt.CompoundTag compound) {
-            KMap<String, Object> map = new KMap<>();
-
-            for (String key : compound.getAllKeys()) {
-                var child = compound.get(key);
-                if (child == null) continue;
-                var value = convertFromTag(child, depth + 1, maxDepth);
-                if (value == null) continue;
-                map.put(key, value);
-            }
-            return map;
-        }
-        if (tag instanceof NumericTag numeric)
-            return numeric.getAsNumber();
-        return tag.getAsString();
-    }
-
-    @Override
-    public void deserializeTile(KMap<String, Object> map, Location pos) {
-        net.minecraft.nbt.CompoundTag tag = (net.minecraft.nbt.CompoundTag) convertToTag(map, 0, 64);
-        var level = ((CraftWorld) pos.getWorld()).getHandle();
-        var blockPos = new BlockPos(pos.getBlockX(), pos.getBlockY(), pos.getBlockZ());
-        J.s(() -> merge(level, blockPos, tag));
-    }
-
-    private void merge(ServerLevel level, BlockPos blockPos, net.minecraft.nbt.CompoundTag tag) {
-        var blockEntity = level.getBlockEntity(blockPos);
-        if (blockEntity == null) {
-            Iris.warn("[NMS] BlockEntity not found at " + blockPos);
-            var state = level.getBlockState(blockPos);
-            if (!state.hasBlockEntity())
-                return;
-
-            blockEntity = ((EntityBlock) state.getBlock())
-                    .newBlockEntity(blockPos, state);
-        }
-        var accessor = new BlockDataAccessor(blockEntity, blockPos);
-        accessor.setData(tag.merge(accessor.getData()));
-    }
-
-    private Tag convertToTag(Object object, int depth, int maxDepth) {
-        if (object == null || depth > maxDepth) return EndTag.INSTANCE;
-        if (object instanceof Map<?,?> map) {
-            var tag = new net.minecraft.nbt.CompoundTag();
-            for (var i : map.entrySet()) {
-                tag.put(i.getKey().toString(), convertToTag(i.getValue(), depth + 1, maxDepth));
-            }
-            return tag;
-        }
-        if (object instanceof List<?> list) {
-            var tag = new net.minecraft.nbt.ListTag();
-            for (var i : list) {
-                tag.add(convertToTag(i, depth + 1, maxDepth));
-            }
-            return tag;
-        }
-        if (object instanceof Byte number) return ByteTag.valueOf(number);
-        if (object instanceof Short number) return ShortTag.valueOf(number);
-        if (object instanceof Integer number) return IntTag.valueOf(number);
-        if (object instanceof Long number) return LongTag.valueOf(number);
-        if (object instanceof Float number) return FloatTag.valueOf(number);
-        if (object instanceof Double number) return DoubleTag.valueOf(number);
-        if (object instanceof String string) return StringTag.valueOf(string);
-        return EndTag.INSTANCE;
-    }
-
-    @Override
-    public CompoundTag serializeEntity(Entity location) {
-        return null;// TODO:
-    }
-
-    @Override
-    public Entity deserializeEntity(CompoundTag s, Location newPosition) {
-        return null;// TODO:
-    }
-
-    @Override
-    public boolean supportsCustomHeight() {
-        return true;
-    }
-
-    private RegistryAccess registry() {
-        return registryAccess.aquire(() -> (RegistryAccess) getFor(RegistryAccess.Frozen.class, ((CraftServer) Bukkit.getServer()).getHandle().getServer()));
-    }
-
-    private Registry<net.minecraft.world.level.biome.Biome> getCustomBiomeRegistry() {
-        return registry().registry(Registries.BIOME).orElse(null);
-    }
-
-    private Registry<Block> getBlockRegistry() {
-        return registry().registry(Registries.BLOCK).orElse(null);
-    }
-
-    @Override
-    public Object getBiomeBaseFromId(int id) {
-        return getCustomBiomeRegistry().getHolder(id);
-    }
-
-    @Override
-    public int getMinHeight(World world) {
-        return world.getMinHeight();
-    }
-
-    @Override
-    public boolean supportsCustomBiomes() {
-        return true;
-    }
-
-    @Override
-    public int getTrueBiomeBaseId(Object biomeBase) {
-        return getCustomBiomeRegistry().getId(((Holder<net.minecraft.world.level.biome.Biome>) biomeBase).value());
-    }
-
-    @Override
-    public Object getTrueBiomeBase(Location location) {
-        return ((CraftWorld) location.getWorld()).getHandle().getBiome(new BlockPos(location.getBlockX(), location.getBlockY(), location.getBlockZ()));
-    }
-
-    @Override
-    public String getTrueBiomeBaseKey(Location location) {
-        return getKeyForBiomeBase(getTrueBiomeBase(location));
-    }
-
-    @Override
-    public Object getCustomBiomeBaseFor(String mckey) {
-        return getCustomBiomeRegistry().get(new ResourceLocation(mckey));
-    }
-
-    @Override
-    public Object getCustomBiomeBaseHolderFor(String mckey) {
-        return getCustomBiomeRegistry().getHolder(getTrueBiomeBaseId(getCustomBiomeRegistry().get(new ResourceLocation(mckey)))).get();
-    }
-
-    public int getBiomeBaseIdForKey(String key) {
-        return getCustomBiomeRegistry().getId(getCustomBiomeRegistry().get(new ResourceLocation(key)));
-    }
-
-    @Override
-    public String getKeyForBiomeBase(Object biomeBase) {
-        return getCustomBiomeRegistry().getKey((net.minecraft.world.level.biome.Biome) biomeBase).getPath(); // something, not something:something
-    }
-
-    @Override
-    public Object getBiomeBase(World world, Biome biome) {
-        return CraftBlock.biomeToBiomeBase(((CraftWorld) world).getHandle()
-                .registryAccess().registry(Registries.BIOME).orElse(null), biome);
-    }
-
-    @Override
-    public Object getBiomeBase(Object registry, Biome biome) {
-        Object v = baseBiomeCache.get(biome);
-
-        if (v != null) {
-            return v;
-        }
-        //noinspection unchecked
-        v = CraftBlock.biomeToBiomeBase((Registry<net.minecraft.world.level.biome.Biome>) registry, biome);
-        if (v == null) {
-            // Ok so there is this new biome name called "CUSTOM" in Paper's new releases.
-            // But, this does NOT exist within CraftBukkit which makes it return an error.
-            // So, we will just return the ID that the plains biome returns instead.
-            //noinspection unchecked
-            return CraftBlock.biomeToBiomeBase((Registry<net.minecraft.world.level.biome.Biome>) registry, Biome.PLAINS);
-        }
-        baseBiomeCache.put(biome, v);
-        return v;
-    }
-
-    @Override
-    public KList<Biome> getBiomes() {
-        return new KList<>(Biome.values()).qdel(Biome.CUSTOM);
-    }
-
-    @Override
-    public boolean isBukkit() {
-        return true;
-    }
-
-    @Override
-    public int getBiomeId(Biome biome) {
-        for (World i : Bukkit.getWorlds()) {
-            if (i.getEnvironment().equals(World.Environment.NORMAL)) {
-                Registry<net.minecraft.world.level.biome.Biome> registry = ((CraftWorld) i).getHandle().registryAccess().registry(Registries.BIOME).orElse(null);
-                return registry.getId((net.minecraft.world.level.biome.Biome) getBiomeBase(registry, biome));
-            }
-        }
-
-        return biome.ordinal();
-    }
-
-    private MCAIdMap<net.minecraft.world.level.biome.Biome> getBiomeMapping() {
-        return biomeMapCache.aquire(() -> new MCAIdMap<>() {
-            @NotNull
-            @Override
-            public Iterator<net.minecraft.world.level.biome.Biome> iterator() {
-                return getCustomBiomeRegistry().iterator();
-            }
-
-            @Override
-            public int getId(net.minecraft.world.level.biome.Biome paramT) {
-                return getCustomBiomeRegistry().getId(paramT);
-            }
-
-            @Override
-            public net.minecraft.world.level.biome.Biome byId(int paramInt) {
-                return (net.minecraft.world.level.biome.Biome) getBiomeBaseFromId(paramInt);
-            }
-        });
-    }
-
-    @NotNull
-    private MCABiomeContainer getBiomeContainerInterface(MCAIdMap<net.minecraft.world.level.biome.Biome> biomeMapping, MCAChunkBiomeContainer<net.minecraft.world.level.biome.Biome> base) {
-        return new MCABiomeContainer() {
-            @Override
-            public int[] getData() {
-                return base.writeBiomes();
-            }
-
-            @Override
-            public void setBiome(int x, int y, int z, int id) {
-                base.setBiome(x, y, z, biomeMapping.byId(id));
-            }
-
-            @Override
-            public int getBiome(int x, int y, int z) {
-                return biomeMapping.getId(base.getBiome(x, y, z));
-            }
-        };
-    }
-
-    @Override
-    public MCABiomeContainer newBiomeContainer(int min, int max) {
-        MCAChunkBiomeContainer<net.minecraft.world.level.biome.Biome> base = new MCAChunkBiomeContainer<>(getBiomeMapping(), min, max);
-        return getBiomeContainerInterface(getBiomeMapping(), base);
-    }
-
-    @Override
-    public MCABiomeContainer newBiomeContainer(int min, int max, int[] data) {
-        MCAChunkBiomeContainer<net.minecraft.world.level.biome.Biome> base = new MCAChunkBiomeContainer<>(getBiomeMapping(), min, max, data);
-        return getBiomeContainerInterface(getBiomeMapping(), base);
-    }
-
-    @Override
-    public int countCustomBiomes() {
-        AtomicInteger a = new AtomicInteger(0);
-
-        getCustomBiomeRegistry().keySet().forEach((i) -> {
-            if (i.getNamespace().equals("minecraft")) {
-                return;
-            }
-
-            a.incrementAndGet();
-            Iris.debug("Custom Biome: " + i);
-        });
-
-        return a.get();
-    }
-
-    public boolean supportsDataPacks() {
-        return true;
-    }
-
-    public void setBiomes(int cx, int cz, World world, Hunk<Object> biomes) {
-        LevelChunk c = ((CraftWorld) world).getHandle().getChunk(cx, cz);
-        biomes.iterateSync((x, y, z, b) -> c.setBiome(x, y, z, (Holder<net.minecraft.world.level.biome.Biome>) b));
-        c.setUnsaved(true);
-    }
-
-    @Override
-    public void forceBiomeInto(int x, int y, int z, Object somethingVeryDirty, ChunkGenerator.BiomeGrid chunk) {
-        try {
-            ChunkAccess s = (ChunkAccess) getFieldForBiomeStorage(chunk).get(chunk);
-            Holder<net.minecraft.world.level.biome.Biome> biome = (Holder<net.minecraft.world.level.biome.Biome>) somethingVeryDirty;
-            s.setBiome(x, y, z, biome);
-        } catch (IllegalAccessException e) {
-            Iris.reportError(e);
-            e.printStackTrace();
-        }
-    }
-
-    private Field getFieldForBiomeStorage(Object storage) {
-        Field f = biomeStorageCache;
-
-        if (f != null) {
-            return f;
-        }
-        try {
-            f = storage.getClass().getDeclaredField("biome");
-            f.setAccessible(true);
-            return f;
-        } catch (Throwable e) {
-            Iris.reportError(e);
-            e.printStackTrace();
-            Iris.error(storage.getClass().getCanonicalName());
-        }
-
-        biomeStorageCache = f;
-        return null;
-    }
-
-    @Override
-    public MCAPaletteAccess createPalette() {
-        MCAIdMapper<BlockState> registry = registryCache.aquireNasty(() -> {
-            Field cf = net.minecraft.core.IdMapper.class.getDeclaredField("tToId");
-            Field df = net.minecraft.core.IdMapper.class.getDeclaredField("idToT");
-            Field bf = net.minecraft.core.IdMapper.class.getDeclaredField("nextId");
-            cf.setAccessible(true);
-            df.setAccessible(true);
-            bf.setAccessible(true);
-            net.minecraft.core.IdMapper<BlockState> blockData = Block.BLOCK_STATE_REGISTRY;
-            int b = bf.getInt(blockData);
-            Object2IntMap<BlockState> c = (Object2IntMap<BlockState>) cf.get(blockData);
-            List<BlockState> d = (List<BlockState>) df.get(blockData);
-            return new MCAIdMapper<BlockState>(c, d, b);
-        });
-        MCAPalette<BlockState> global = globalCache.aquireNasty(() -> new MCAGlobalPalette<>(registry, ((CraftBlockData) AIR).getState()));
-        MCAPalettedContainer<BlockState> container = new MCAPalettedContainer<>(global, registry,
-                i -> ((CraftBlockData) NBTWorld.getBlockData(i)).getState(),
-                i -> NBTWorld.getCompound(CraftBlockData.fromData(i)),
-                ((CraftBlockData) AIR).getState());
-        return new MCAWrappedPalettedContainer<>(container,
-                i -> NBTWorld.getCompound(CraftBlockData.fromData(i)),
-                i -> ((CraftBlockData) NBTWorld.getBlockData(i)).getState());
-    }
-
-    @Override
-    public void injectBiomesFromMantle(Chunk e, Mantle mantle) {
-        ChunkAccess chunk = ((CraftChunk) e).getHandle();
-        AtomicInteger c = new AtomicInteger();
-        AtomicInteger r = new AtomicInteger();
-        mantle.iterateChunk(e.getX(), e.getZ(), MatterBiomeInject.class, (x, y, z, b) -> {
-            if (b != null) {
-                if (b.isCustom()) {
-                    chunk.setBiome(x, y, z, getCustomBiomeRegistry().getHolder(b.getBiomeId()).get());
-                    c.getAndIncrement();
-                } else {
-                    chunk.setBiome(x, y, z, (Holder<net.minecraft.world.level.biome.Biome>) getBiomeBase(e.getWorld(), b.getBiome()));
-                    r.getAndIncrement();
-                }
-            }
-        });
-    }
-
-    public ItemStack applyCustomNbt(ItemStack itemStack, KMap<String, Object> customNbt) throws IllegalArgumentException {
-        if (customNbt != null && !customNbt.isEmpty()) {
-            net.minecraft.world.item.ItemStack s = CraftItemStack.asNMSCopy(itemStack);
-
-            try {
-                net.minecraft.nbt.CompoundTag tag = TagParser.parseTag((new JSONObject(customNbt)).toString());
-                tag.merge(s.getOrCreateTag());
-                s.setTag(tag);
-            } catch (CommandSyntaxException var5) {
-                throw new IllegalArgumentException(var5);
-            }
-
-            return CraftItemStack.asBukkitCopy(s);
-        } else {
-            return itemStack;
-        }
-    }
-
-    public void inject(long seed, Engine engine, World world) {
-        var chunkMap = ((CraftWorld)world).getHandle().getChunkSource().chunkMap;
-        chunkMap.generator = new IrisChunkGenerator(chunkMap.generator, seed, engine, world);
-    }
-
-
-    public Vector3d getBoundingbox(org.bukkit.entity.EntityType entity) {
-        Field[] fields = EntityType.class.getDeclaredFields();
-        for (Field field : fields) {
-            if (Modifier.isStatic(field.getModifiers()) && field.getType().equals(EntityType.class)) {
-                try {
-                    EntityType entityType = (EntityType) field.get(null);
-                    if (entityType.getDescriptionId().equals("entity.minecraft." + entity.name().toLowerCase())) {
-                        Vector<Float> v1 = new Vector<>();
-                        v1.add(entityType.getHeight());
-                        entityType.getDimensions();
-                        Vector3d box = new Vector3d( entityType.getWidth(), entityType.getHeight(),  entityType.getWidth());
-                        //System.out.println("Entity Type: " + entityType.getDescriptionId() + ", " + "Height: " + height + ", Width: " + width);
-                        return box;
-                    }
-                } catch (IllegalAccessException e) {
-                    Iris.error("Unable to get entity dimensions!");
-                    e.printStackTrace();
-                }
-            }
-        }
-        return null;
-    }
-
-    @Override
-    public Entity spawnEntity(Location location,  org.bukkit.entity.EntityType type, CreatureSpawnEvent.SpawnReason reason) {
-        return ((CraftWorld) location.getWorld()).spawn(location, type.getEntityClass(), null, reason);
-    }
-
-    @Override
-    public Color getBiomeColor(Location location, BiomeColor type) {
-        LevelReader reader = ((CraftWorld) location.getWorld()).getHandle();
-        var holder = reader.getBiome(new BlockPos(location.getBlockX(), location.getBlockY(), location.getBlockZ()));
-        var biome = holder.value();
-        if (biome == null) throw new IllegalArgumentException("Invalid biome: " + holder.unwrapKey().orElse(null));
-
-        int rgba = switch (type) {
-            case FOG -> biome.getFogColor();
-            case WATER -> biome.getWaterColor();
-            case WATER_FOG -> biome.getWaterFogColor();
-            case SKY -> biome.getSkyColor();
-            case FOLIAGE -> biome.getFoliageColor();
-            case GRASS -> biome.getGrassColor(location.getBlockX(), location.getBlockZ());
-        };
-        if (rgba == 0) {
-            if (BiomeColor.FOLIAGE == type && biome.getSpecialEffects().getFoliageColorOverride().isEmpty())
-                return null;
-            if (BiomeColor.GRASS == type && biome.getSpecialEffects().getGrassColorOverride().isEmpty())
-                return null;
-        }
-        return new Color(rgba, true);
-    }
-
-    @Override
-    public KList<String> getStructureKeys() {
-        KList<String> keys = new KList<>();
-
-        var registry = registry().registry(Registries.STRUCTURE).orElse(null);
-        if (registry == null) return keys;
-        registry.keySet().stream().map(ResourceLocation::toString).forEach(keys::add);
-        registry.getTags()
-                .map(Pair::getFirst)
-                .map(TagKey::location)
-                .map(ResourceLocation::toString)
-                .map(s -> "#" + s)
-                .forEach(keys::add);
-
-        return keys;
-    }
-
-    private static Field getField(Class<?> clazz, Class<?> fieldType) throws NoSuchFieldException {
-        try {
-            for (Field f : clazz.getDeclaredFields()) {
-                if (f.getType().equals(fieldType))
-                    return f;
-            }
-            throw new NoSuchFieldException(fieldType.getName());
-        } catch (NoSuchFieldException var4) {
-            Class<?> superClass = clazz.getSuperclass();
-            if (superClass == null) {
-                throw var4;
-            } else {
-                return getField(superClass, fieldType);
-            }
-        }
-    }
-}

nms/v1_19_R3/src/main/java/com/volmit/iris/core/nms/v1_19_R3/CustomBiomeSource.java

@@ -1,169 +0,0 @@
-package com.volmit.iris.core.nms.v1_19_R3;
-
-import com.mojang.serialization.Codec;
-import com.volmit.iris.Iris;
-import com.volmit.iris.engine.data.cache.AtomicCache;
-import com.volmit.iris.engine.framework.Engine;
-import com.volmit.iris.engine.object.IrisBiome;
-import com.volmit.iris.engine.object.IrisBiomeCustom;
-import com.volmit.iris.util.collection.KMap;
-import com.volmit.iris.util.math.RNG;
-import net.minecraft.core.Holder;
-import net.minecraft.core.Registry;
-import net.minecraft.core.RegistryAccess;
-import net.minecraft.core.registries.Registries;
-import net.minecraft.resources.ResourceKey;
-import net.minecraft.resources.ResourceLocation;
-import net.minecraft.world.level.biome.Biome;
-import net.minecraft.world.level.biome.BiomeSource;
-import net.minecraft.world.level.biome.Climate;
-import org.bukkit.Bukkit;
-import org.bukkit.World;
-import org.bukkit.craftbukkit.v1_19_R3.CraftServer;
-import org.bukkit.craftbukkit.v1_19_R3.CraftWorld;
-import org.bukkit.craftbukkit.v1_19_R3.block.CraftBlock;
-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Optional;
-import java.util.stream.Stream;
-
-public class CustomBiomeSource extends BiomeSource {
-
-    private final long seed;
-    private final Engine engine;
-    private final Registry<Biome> biomeCustomRegistry;
-    private final Registry<Biome> biomeRegistry;
-    private final AtomicCache<RegistryAccess> registryAccess = new AtomicCache<>();
-    private final RNG rng;
-    private final KMap<String, Holder<Biome>> customBiomes;
-
-    public CustomBiomeSource(long seed, Engine engine, World world) {
-        this.engine = engine;
-        this.seed = seed;
-        this.biomeCustomRegistry = registry().registry(Registries.BIOME).orElse(null);
-        this.biomeRegistry = ((RegistryAccess) getFor(RegistryAccess.Frozen.class, ((CraftServer) Bukkit.getServer()).getHandle().getServer())).registry(Registries.BIOME).orElse(null);
-        this.rng = new RNG(engine.getSeedManager().getBiome());
-        this.customBiomes = fillCustomBiomes(biomeCustomRegistry, engine);
-    }
-
-    private static List<Holder<Biome>> getAllBiomes(Registry<Biome> customRegistry, Registry<Biome> registry, Engine engine) {
-        List<Holder<Biome>> b = new ArrayList<>();
-
-        for (IrisBiome i : engine.getAllBiomes()) {
-            if (i.isCustom()) {
-                for (IrisBiomeCustom j : i.getCustomDerivitives()) {
-                    b.add(customRegistry.getHolder(customRegistry.getResourceKey(customRegistry
-                            .get(new ResourceLocation(engine.getDimension().getLoadKey() + ":" + j.getId()))).get()).get());
-                }
-            } else {
-                b.add(CraftBlock.biomeToBiomeBase(registry, i.getVanillaDerivative()));
-            }
-        }
-
-        return b;
-    }
-
-    private static Object getFor(Class<?> type, Object source) {
-        Object o = fieldFor(type, source);
-
-        if (o != null) {
-            return o;
-        }
-
-        return invokeFor(type, source);
-    }
-
-    private static Object fieldFor(Class<?> returns, Object in) {
-        return fieldForClass(returns, in.getClass(), in);
-    }
-
-    private static Object invokeFor(Class<?> returns, Object in) {
-        for (Method i : in.getClass().getMethods()) {
-            if (i.getReturnType().equals(returns)) {
-                i.setAccessible(true);
-                try {
-                    Iris.debug("[NMS] Found " + returns.getSimpleName() + " in " + in.getClass().getSimpleName() + "." + i.getName() + "()");
-                    return i.invoke(in);
-                } catch (Throwable e) {
-                    e.printStackTrace();
-                }
-            }
-        }
-
-        return null;
-    }
-
-    @SuppressWarnings("unchecked")
-    private static <T> T fieldForClass(Class<T> returnType, Class<?> sourceType, Object in) {
-        for (Field i : sourceType.getDeclaredFields()) {
-            if (i.getType().equals(returnType)) {
-                i.setAccessible(true);
-                try {
-                    Iris.debug("[NMS] Found " + returnType.getSimpleName() + " in " + sourceType.getSimpleName() + "." + i.getName());
-                    return (T) i.get(in);
-                } catch (IllegalAccessException e) {
-                    e.printStackTrace();
-                }
-            }
-        }
-        return null;
-    }
-
-    @Override
-    protected Stream<Holder<Biome>> collectPossibleBiomes() {
-        return getAllBiomes(
-                ((RegistryAccess) getFor(RegistryAccess.Frozen.class, ((CraftServer) Bukkit.getServer()).getHandle().getServer()))
-                        .registry(Registries.BIOME).orElse(null),
-                ((CraftWorld) engine.getWorld().realWorld()).getHandle().registryAccess().registry(Registries.BIOME).orElse(null),
-                engine).stream();
-    }
-    private KMap<String, Holder<Biome>> fillCustomBiomes(Registry<Biome> customRegistry, Engine engine) {
-        KMap<String, Holder<Biome>> m = new KMap<>();
-
-        for (IrisBiome i : engine.getAllBiomes()) {
-            if (i.isCustom()) {
-                for (IrisBiomeCustom j : i.getCustomDerivitives()) {
-                    ResourceLocation resourceLocation = new ResourceLocation(engine.getDimension().getLoadKey() + ":" + j.getId());
-                    Biome biome = customRegistry.get(resourceLocation);
-                    Optional<ResourceKey<Biome>> optionalBiomeKey = customRegistry.getResourceKey(biome);
-                    if (optionalBiomeKey.isEmpty()) {
-                        Iris.error("Cannot find biome for IrisBiomeCustom " + j.getId() + " from engine " + engine.getName());
-                        continue;
-                    }
-                    ResourceKey<Biome> biomeKey = optionalBiomeKey.get();
-                    Optional<Holder.Reference<Biome>> optionalReferenceHolder = customRegistry.getHolder(biomeKey);
-                    if (optionalReferenceHolder.isEmpty()) {
-                        Iris.error("Cannot find reference to biome " + biomeKey + " for engine " + engine.getName());
-                        continue;
-                    }
-                    m.put(j.getId(), optionalReferenceHolder.get());
-                }
-            }
-        }
-
-        return m;
-    }
-
-    private RegistryAccess registry() {
-        return registryAccess.aquire(() -> (RegistryAccess) getFor(RegistryAccess.Frozen.class, ((CraftServer) Bukkit.getServer()).getHandle().getServer()));
-    }
-
-    @Override
-    protected Codec<? extends BiomeSource> codec() {
-        throw new UnsupportedOperationException("Not supported");
-    }
-
-    @Override
-    public Holder<Biome> getNoiseBiome(int x, int y, int z, Climate.Sampler sampler) {
-        int m = (y - engine.getMinHeight()) << 2;
-        IrisBiome ib = engine.getComplex().getTrueBiomeStream().get(x << 2, z << 2);
-        if (ib.isCustom()) {
-            return customBiomes.get(ib.getCustomBiome(rng, x << 2, m, z << 2).getId());
-        } else {
-            org.bukkit.block.Biome v = ib.getSkyBiome(rng, x << 2, m, z << 2);
-            return CraftBlock.biomeToBiomeBase(biomeRegistry, v);
-        }
-    }
-}

nms/v1_19_R3/src/main/java/com/volmit/iris/core/nms/v1_19_R3/IrisChunkGenerator.java

@@ -1,262 +0,0 @@
-package com.volmit.iris.core.nms.v1_19_R3;
-
-import com.mojang.datafixers.util.Pair;
-import com.mojang.serialization.Codec;
-import com.volmit.iris.Iris;
-import com.volmit.iris.engine.framework.Engine;
-import com.volmit.iris.engine.framework.ResultLocator;
-import com.volmit.iris.engine.framework.WrongEngineBroException;
-import com.volmit.iris.engine.object.IrisJigsawStructure;
-import com.volmit.iris.engine.object.IrisJigsawStructurePlacement;
-import com.volmit.iris.util.collection.KList;
-import com.volmit.iris.util.collection.KMap;
-import com.volmit.iris.util.collection.KSet;
-import com.volmit.iris.util.mantle.MantleFlag;
-import com.volmit.iris.util.math.Position2;
-import com.volmit.iris.util.reflect.WrappedField;
-import net.minecraft.core.BlockPos;
-import net.minecraft.core.Holder;
-import net.minecraft.core.HolderSet;
-import net.minecraft.core.RegistryAccess;
-import net.minecraft.core.registries.Registries;
-import net.minecraft.resources.ResourceKey;
-import net.minecraft.resources.ResourceLocation;
-import net.minecraft.server.level.ServerLevel;
-import net.minecraft.server.level.WorldGenRegion;
-import net.minecraft.tags.TagKey;
-import net.minecraft.util.random.WeightedRandomList;
-import net.minecraft.world.entity.MobCategory;
-import net.minecraft.world.level.LevelHeightAccessor;
-import net.minecraft.world.level.NoiseColumn;
-import net.minecraft.world.level.StructureManager;
-import net.minecraft.world.level.WorldGenLevel;
-import net.minecraft.world.level.biome.Biome;
-import net.minecraft.world.level.biome.BiomeManager;
-import net.minecraft.world.level.biome.BiomeSource;
-import net.minecraft.world.level.biome.MobSpawnSettings;
-import net.minecraft.world.level.chunk.ChunkAccess;
-import net.minecraft.world.level.chunk.ChunkGenerator;
-import net.minecraft.world.level.chunk.ChunkGeneratorStructureState;
-import net.minecraft.world.level.levelgen.GenerationStep;
-import net.minecraft.world.level.levelgen.Heightmap;
-import net.minecraft.world.level.levelgen.RandomState;
-import net.minecraft.world.level.levelgen.blending.Blender;
-import net.minecraft.world.level.levelgen.structure.Structure;
-import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemplateManager;
-import org.bukkit.World;
-import org.bukkit.craftbukkit.v1_19_R3.CraftWorld;
-import org.bukkit.craftbukkit.v1_19_R3.generator.CustomChunkGenerator;
-
-import javax.annotation.Nullable;
-import java.lang.reflect.Field;
-import java.util.List;
-import java.util.Objects;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.ExecutionException;
-import java.util.concurrent.Executor;
-
-public class IrisChunkGenerator extends CustomChunkGenerator {
-    private static final WrappedField<ChunkGenerator, BiomeSource> BIOME_SOURCE;
-    private final ChunkGenerator delegate;
-    private final Engine engine;
-    private final KMap<ResourceKey<Structure>, KSet<String>> structures = new KMap<>();
-
-    public IrisChunkGenerator(ChunkGenerator delegate, long seed, Engine engine, World world) {
-        super(((CraftWorld) world).getHandle(), edit(delegate, new CustomBiomeSource(seed, engine, world)), null);
-        this.delegate = delegate;
-        this.engine = engine;
-        var dimension = engine.getDimension();
-
-        KSet<IrisJigsawStructure> placements = new KSet<>();
-        addAll(dimension.getJigsawStructures(), placements);
-        for (var region : dimension.getAllRegions(engine)) {
-            addAll(region.getJigsawStructures(), placements);
-            for (var biome : region.getAllBiomes(engine))
-                addAll(biome.getJigsawStructures(), placements);
-        }
-        var stronghold = dimension.getStronghold();
-        if (stronghold != null)
-            placements.add(engine.getData().getJigsawStructureLoader().load(stronghold));
-        placements.removeIf(Objects::isNull);
-
-        var registry = ((CraftWorld) world).getHandle().registryAccess().registry(Registries.STRUCTURE).orElseThrow();
-        for (var s : placements) {
-            try {
-                String raw = s.getStructureKey();
-                if (raw == null) continue;
-                boolean tag = raw.startsWith("#");
-                if (tag) raw = raw.substring(1);
-
-                var location = new ResourceLocation(raw);
-                if (!tag) {
-                    structures.computeIfAbsent(ResourceKey.create(Registries.STRUCTURE, location), k -> new KSet<>()).add(s.getLoadKey());
-                    continue;
-                }
-
-                var key = TagKey.create(Registries.STRUCTURE, location);
-                var set = registry.getTag(key).orElse(null);
-                if (set == null) {
-                    Iris.error("Could not find structure tag: " + raw);
-                    continue;
-                }
-                for (var holder : set) {
-                    var resourceKey = holder.unwrapKey().orElse(null);
-                    if (resourceKey == null) continue;
-                    structures.computeIfAbsent(resourceKey, k -> new KSet<>()).add(s.getLoadKey());
-                }
-            } catch (Throwable e) {
-                Iris.error("Failed to load structure: " + s.getLoadKey());
-                e.printStackTrace();
-            }
-        }
-    }
-
-    private void addAll(KList<IrisJigsawStructurePlacement> placements, KSet<IrisJigsawStructure> structures) {
-        if (placements == null) return;
-        placements.stream()
-                .map(IrisJigsawStructurePlacement::getStructure)
-                .map(engine.getData().getJigsawStructureLoader()::load)
-                .filter(Objects::nonNull)
-                .forEach(structures::add);
-    }
-
-    @Override
-    public @Nullable Pair<BlockPos, Holder<Structure>> findNearestMapStructure(ServerLevel level, HolderSet<Structure> holders, BlockPos pos, int radius, boolean findUnexplored) {
-        if (engine.getDimension().isDisableExplorerMaps())
-            return null;
-
-        KMap<String, Holder<Structure>> structures = new KMap<>();
-        for (var holder : holders) {
-            if (holder == null) continue;
-            var key = holder.unwrapKey().orElse(null);
-            var set = this.structures.get(key);
-            if (set == null) continue;
-            for (var structure : set) {
-                structures.put(structure, holder);
-            }
-        }
-        if (structures.isEmpty())
-            return null;
-
-        var locator = ResultLocator.locateStructure(structures.keySet())
-                .then((e, p , s) -> structures.get(s.getLoadKey()));
-        if (findUnexplored)
-            locator = locator.then((e, p, s) -> e.getMantle().getMantle().getChunk(p.getX(), p.getZ()).isFlagged(MantleFlag.DISCOVERED) ? null : s);
-
-        try {
-            var result = locator.find(engine, new Position2(pos.getX() >> 4, pos.getZ() >> 4), radius * 10L, i -> {}, false).get();
-            if (result == null) return null;
-            var blockPos = new BlockPos(result.getBlockX(), 0, result.getBlockZ());
-            return Pair.of(blockPos, result.obj());
-        } catch (WrongEngineBroException | ExecutionException | InterruptedException e) {
-            return null;
-        }
-    }
-
-    @Override
-    protected Codec<? extends ChunkGenerator> codec() {
-        return Codec.unit(null);
-    }
-
-    @Override
-    public ChunkGenerator getDelegate() {
-        if (delegate instanceof CustomChunkGenerator chunkGenerator)
-            return chunkGenerator.getDelegate();
-        return delegate;
-    }
-
-    @Override
-    public int getMinY() {
-        return delegate.getMinY();
-    }
-
-    @Override
-    public int getSeaLevel() {
-        return delegate.getSeaLevel();
-    }
-
-    @Override
-    public void createStructures(RegistryAccess iregistrycustom, ChunkGeneratorStructureState chunkgeneratorstructurestate, StructureManager structuremanager, ChunkAccess ichunkaccess, StructureTemplateManager structuretemplatemanager) {
-        delegate.createStructures(iregistrycustom, chunkgeneratorstructurestate, structuremanager, ichunkaccess, structuretemplatemanager);
-    }
-
-    @Override
-    public void buildSurface(WorldGenRegion regionlimitedworldaccess, StructureManager structuremanager, RandomState randomstate, ChunkAccess ichunkaccess) {
-        delegate.buildSurface(regionlimitedworldaccess, structuremanager, randomstate, ichunkaccess);
-    }
-
-    @Override
-    public void applyCarvers(WorldGenRegion regionlimitedworldaccess, long seed, RandomState randomstate, BiomeManager biomemanager, StructureManager structuremanager, ChunkAccess ichunkaccess, GenerationStep.Carving worldgenstage_features) {
-        delegate.applyCarvers(regionlimitedworldaccess, seed, randomstate, biomemanager, structuremanager, ichunkaccess, worldgenstage_features);
-    }
-
-    @Override
-    public CompletableFuture<ChunkAccess> fillFromNoise(Executor executor, Blender blender, RandomState randomstate, StructureManager structuremanager, ChunkAccess ichunkaccess) {
-        return delegate.fillFromNoise(executor, blender, randomstate, structuremanager, ichunkaccess);
-    }
-
-    @Override
-    public int getBaseHeight(int i, int j, Heightmap.Types heightmap_type, LevelHeightAccessor levelheightaccessor, RandomState randomstate) {
-        return delegate.getBaseHeight(i, j, heightmap_type, levelheightaccessor, randomstate);
-    }
-
-    @Override
-    public WeightedRandomList<MobSpawnSettings.SpawnerData> getMobsAt(Holder<Biome> holder, StructureManager structuremanager, MobCategory enumcreaturetype, BlockPos blockposition) {
-        return delegate.getMobsAt(holder, structuremanager, enumcreaturetype, blockposition);
-    }
-
-    @Override
-    public void applyBiomeDecoration(WorldGenLevel generatoraccessseed, ChunkAccess ichunkaccess, StructureManager structuremanager) {
-        delegate.applyBiomeDecoration(generatoraccessseed, ichunkaccess, structuremanager);
-    }
-
-    @Override
-    public void addDebugScreenInfo(List<String> list, RandomState randomstate, BlockPos blockposition) {
-        delegate.addDebugScreenInfo(list, randomstate, blockposition);
-    }
-
-    @Override
-    public void spawnOriginalMobs(WorldGenRegion regionlimitedworldaccess) {
-        delegate.spawnOriginalMobs(regionlimitedworldaccess);
-    }
-
-    @Override
-    public int getSpawnHeight(LevelHeightAccessor levelheightaccessor) {
-        return delegate.getSpawnHeight(levelheightaccessor);
-    }
-
-    @Override
-    public int getGenDepth() {
-        return delegate.getGenDepth();
-    }
-
-    @Override
-    public NoiseColumn getBaseColumn(int i, int j, LevelHeightAccessor levelheightaccessor, RandomState randomstate) {
-        return delegate.getBaseColumn(i, j, levelheightaccessor, randomstate);
-    }
-
-    static {
-        Field biomeSource = null;
-        for (Field field : ChunkGenerator.class.getDeclaredFields()) {
-            if (!field.getType().equals(BiomeSource.class))
-                continue;
-            biomeSource = field;
-            break;
-        }
-        if (biomeSource == null)
-            throw new RuntimeException("Could not find biomeSource field in ChunkGenerator!");
-        BIOME_SOURCE = new WrappedField<>(ChunkGenerator.class, biomeSource.getName());
-    }
-
-    private static ChunkGenerator edit(ChunkGenerator generator, BiomeSource source) {
-        try {
-            BIOME_SOURCE.set(generator, source);
-            if (generator instanceof CustomChunkGenerator custom)
-                BIOME_SOURCE.set(custom.getDelegate(), source);
-
-            return generator;
-        } catch (IllegalAccessException e) {
-            throw new RuntimeException(e);
-        }
-    }
-}

nms/v1_19_R3/src/main/java/com/volmit/iris/core/nms/v1_19_R3/NMSBinding.java

@@ -1,638 +0,0 @@
-package com.volmit.iris.core.nms.v1_19_R3;
-
-import java.awt.Color;
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.DataInputStream;
-import java.io.DataOutputStream;
-import java.lang.reflect.Field;
-import java.lang.reflect.Method;
-import java.lang.reflect.Modifier;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map;
-import java.util.Vector;
-import java.util.concurrent.atomic.AtomicInteger;
-
-import com.mojang.datafixers.util.Pair;
-import com.volmit.iris.core.nms.container.BiomeColor;
-import com.volmit.iris.util.scheduling.J;
-import net.minecraft.nbt.*;
-import net.minecraft.nbt.Tag;
-import net.minecraft.server.commands.data.BlockDataAccessor;
-import net.minecraft.tags.TagKey;
-import net.minecraft.world.level.LevelReader;
-import net.minecraft.world.level.block.EntityBlock;
-import org.bukkit.*;
-import org.bukkit.block.Biome;
-import org.bukkit.block.data.BlockData;
-import org.bukkit.craftbukkit.v1_19_R3.CraftChunk;
-import org.bukkit.craftbukkit.v1_19_R3.CraftServer;
-import org.bukkit.craftbukkit.v1_19_R3.CraftWorld;
-import org.bukkit.craftbukkit.v1_19_R3.block.CraftBlock;
-import org.bukkit.craftbukkit.v1_19_R3.block.CraftBlockState;
-import org.bukkit.craftbukkit.v1_19_R3.block.CraftBlockStates;
-import org.bukkit.craftbukkit.v1_19_R3.block.data.CraftBlockData;
-import org.bukkit.craftbukkit.v1_19_R3.entity.CraftDolphin;
-import org.bukkit.craftbukkit.v1_19_R3.inventory.CraftItemStack;
-import org.bukkit.entity.Dolphin;
-import org.bukkit.entity.Entity;
-import org.bukkit.event.entity.CreatureSpawnEvent;
-import org.bukkit.generator.ChunkGenerator;
-import org.bukkit.inventory.ItemStack;
-import org.jetbrains.annotations.Contract;
-import org.jetbrains.annotations.NotNull;
-
-import com.mojang.brigadier.exceptions.CommandSyntaxException;
-import com.volmit.iris.Iris;
-import com.volmit.iris.core.nms.INMSBinding;
-import com.volmit.iris.engine.data.cache.AtomicCache;
-import com.volmit.iris.engine.framework.Engine;
-import com.volmit.iris.util.collection.KList;
-import com.volmit.iris.util.collection.KMap;
-import com.volmit.iris.util.hunk.Hunk;
-import com.volmit.iris.util.json.JSONObject;
-import com.volmit.iris.util.mantle.Mantle;
-import com.volmit.iris.util.math.Vector3d;
-import com.volmit.iris.util.matter.MatterBiomeInject;
-import com.volmit.iris.util.nbt.io.NBTUtil;
-import com.volmit.iris.util.nbt.mca.NBTWorld;
-import com.volmit.iris.util.nbt.mca.palette.*;
-import com.volmit.iris.util.nbt.tag.CompoundTag;
-
-import it.unimi.dsi.fastutil.objects.Object2IntMap;
-import net.minecraft.core.BlockPos;
-import net.minecraft.core.Holder;
-import net.minecraft.core.Registry;
-import net.minecraft.core.RegistryAccess;
-import net.minecraft.core.registries.Registries;
-import net.minecraft.resources.ResourceLocation;
-import net.minecraft.server.level.ServerLevel;
-import net.minecraft.world.entity.EntityType;
-import net.minecraft.world.level.biome.BiomeSource;
-import net.minecraft.world.level.block.Block;
-import net.minecraft.world.level.block.entity.BlockEntity;
-import net.minecraft.world.level.block.state.BlockState;
-import net.minecraft.world.level.chunk.ChunkAccess;
-import net.minecraft.world.level.chunk.ChunkStatus;
-import net.minecraft.world.level.chunk.LevelChunk;
-import sun.misc.Unsafe;
-
-public class NMSBinding implements INMSBinding {
-    private final KMap<Biome, Object> baseBiomeCache = new KMap<>();
-    private final BlockData AIR = Material.AIR.createBlockData();
-    private final AtomicCache<MCAIdMap<net.minecraft.world.level.biome.Biome>> biomeMapCache = new AtomicCache<>();
-    private final AtomicCache<MCAIdMapper<BlockState>> registryCache = new AtomicCache<>();
-    private final AtomicCache<MCAPalette<BlockState>> globalCache = new AtomicCache<>();
-    private final AtomicCache<RegistryAccess> registryAccess = new AtomicCache<>();
-    private final AtomicCache<Method> byIdRef = new AtomicCache<>();
-    private Field biomeStorageCache = null;
-
-    private static Object getFor(Class<?> type, Object source) {
-        Object o = fieldFor(type, source);
-
-        if (o != null) {
-            return o;
-        }
-
-        return invokeFor(type, source);
-    }
-
-    private static Object invokeFor(Class<?> returns, Object in) {
-        for (Method i : in.getClass().getMethods()) {
-            if (i.getReturnType().equals(returns)) {
-                i.setAccessible(true);
-                try {
-                    Iris.debug("[NMS] Found " + returns.getSimpleName() + " in " + in.getClass().getSimpleName() + "." + i.getName() + "()");
-                    return i.invoke(in);
-                } catch (Throwable e) {
-                    e.printStackTrace();
-                }
-            }
-        }
-
-        return null;
-    }
-
-    private static Object fieldFor(Class<?> returns, Object in) {
-        return fieldForClass(returns, in.getClass(), in);
-    }
-
-    @SuppressWarnings("unchecked")
-    private static <T> T fieldForClass(Class<T> returnType, Class<?> sourceType, Object in) {
-        for (Field i : sourceType.getDeclaredFields()) {
-            if (i.getType().equals(returnType)) {
-                i.setAccessible(true);
-                try {
-                    Iris.debug("[NMS] Found " + returnType.getSimpleName() + " in " + sourceType.getSimpleName() + "." + i.getName());
-                    return (T) i.get(in);
-                } catch (IllegalAccessException e) {
-                    e.printStackTrace();
-                }
-            }
-        }
-        return null;
-    }
-
-    private static Class<?> getClassType(Class<?> type, int ordinal) {
-        return type.getDeclaredClasses()[ordinal];
-    }
-
-    @Override
-    public boolean hasTile(Material material) {
-        return !CraftBlockState.class.equals(CraftBlockStates.getBlockStateType(material));
-    }
-
-    @Override
-    public boolean hasTile(Location l) {
-        return ((CraftWorld) l.getWorld()).getHandle().getBlockEntity(new BlockPos(l.getBlockX(), l.getBlockY(), l.getBlockZ()), false) != null;
-    }
-
-    @Override
-    @SuppressWarnings("unchecked")
-    public KMap<String, Object> serializeTile(Location location) {
-        BlockEntity e = ((CraftWorld) location.getWorld()).getHandle().getBlockEntity(new BlockPos(location.getBlockX(), location.getBlockY(), location.getBlockZ()), false);
-
-        if (e == null) {
-            return null;
-        }
-
-        net.minecraft.nbt.CompoundTag tag = e.saveWithoutMetadata();
-        return (KMap<String, Object>) convertFromTag(tag, 0, 64);
-    }
-
-    @Contract(value = "null, _, _ -> null", pure = true)
-    private Object convertFromTag(net.minecraft.nbt.Tag tag, int depth, int maxDepth) {
-        if (tag == null || depth > maxDepth) return null;
-        if (tag instanceof CollectionTag<?> collection) {
-            KList<Object> list = new KList<>();
-
-            for (Object i : collection) {
-                if (i instanceof net.minecraft.nbt.Tag t)
-                    list.add(convertFromTag(t, depth + 1, maxDepth));
-                else list.add(i);
-            }
-            return list;
-        }
-        if (tag instanceof net.minecraft.nbt.CompoundTag compound) {
-            KMap<String, Object> map = new KMap<>();
-
-            for (String key : compound.getAllKeys()) {
-                var child = compound.get(key);
-                if (child == null) continue;
-                var value = convertFromTag(child, depth + 1, maxDepth);
-                if (value == null) continue;
-                map.put(key, value);
-            }
-            return map;
-        }
-        if (tag instanceof NumericTag numeric)
-            return numeric.getAsNumber();
-        return tag.getAsString();
-    }
-
-    @Override
-    public void deserializeTile(KMap<String, Object> map, Location pos) {
-        net.minecraft.nbt.CompoundTag tag = (net.minecraft.nbt.CompoundTag) convertToTag(map, 0, 64);
-        var level = ((CraftWorld) pos.getWorld()).getHandle();
-        var blockPos = new BlockPos(pos.getBlockX(), pos.getBlockY(), pos.getBlockZ());
-        J.s(() -> merge(level, blockPos, tag));
-    }
-
-    private void merge(ServerLevel level, BlockPos blockPos, net.minecraft.nbt.CompoundTag tag) {
-        var blockEntity = level.getBlockEntity(blockPos);
-        if (blockEntity == null) {
-            Iris.warn("[NMS] BlockEntity not found at " + blockPos);
-            var state = level.getBlockState(blockPos);
-            if (!state.hasBlockEntity())
-                return;
-
-            blockEntity = ((EntityBlock) state.getBlock())
-                    .newBlockEntity(blockPos, state);
-        }
-        var accessor = new BlockDataAccessor(blockEntity, blockPos);
-        accessor.setData(tag.merge(accessor.getData()));
-    }
-
-    private Tag convertToTag(Object object, int depth, int maxDepth) {
-        if (object == null || depth > maxDepth) return EndTag.INSTANCE;
-        if (object instanceof Map<?,?> map) {
-            var tag = new net.minecraft.nbt.CompoundTag();
-            for (var i : map.entrySet()) {
-                tag.put(i.getKey().toString(), convertToTag(i.getValue(), depth + 1, maxDepth));
-            }
-            return tag;
-        }
-        if (object instanceof List<?> list) {
-            var tag = new net.minecraft.nbt.ListTag();
-            for (var i : list) {
-                tag.add(convertToTag(i, depth + 1, maxDepth));
-            }
-            return tag;
-        }
-        if (object instanceof Byte number) return ByteTag.valueOf(number);
-        if (object instanceof Short number) return ShortTag.valueOf(number);
-        if (object instanceof Integer number) return IntTag.valueOf(number);
-        if (object instanceof Long number) return LongTag.valueOf(number);
-        if (object instanceof Float number) return FloatTag.valueOf(number);
-        if (object instanceof Double number) return DoubleTag.valueOf(number);
-        if (object instanceof String string) return StringTag.valueOf(string);
-        return EndTag.INSTANCE;
-    }
-
-    @Override
-    public CompoundTag serializeEntity(Entity location) {
-        return null;// TODO:
-    }
-
-    @Override
-    public Entity deserializeEntity(CompoundTag s, Location newPosition) {
-        return null;// TODO:
-    }
-
-    @Override
-    public boolean supportsCustomHeight() {
-        return true;
-    }
-
-    private RegistryAccess registry() {
-        return registryAccess.aquire(() -> (RegistryAccess) getFor(RegistryAccess.Frozen.class, ((CraftServer) Bukkit.getServer()).getHandle().getServer()));
-    }
-
-    private Registry<net.minecraft.world.level.biome.Biome> getCustomBiomeRegistry() {
-        return registry().registry(Registries.BIOME).orElse(null);
-    }
-
-    private Registry<Block> getBlockRegistry() {
-        return registry().registry(Registries.BLOCK).orElse(null);
-    }
-
-    @Override
-    public Object getBiomeBaseFromId(int id) {
-        return getCustomBiomeRegistry().getHolder(id);
-    }
-
-    @Override
-    public int getMinHeight(World world) {
-        return world.getMinHeight();
-    }
-
-    @Override
-    public boolean supportsCustomBiomes() {
-        return true;
-    }
-
-    @Override
-    public int getTrueBiomeBaseId(Object biomeBase) {
-        return getCustomBiomeRegistry().getId(((Holder<net.minecraft.world.level.biome.Biome>) biomeBase).value());
-    }
-
-    @Override
-    public Object getTrueBiomeBase(Location location) {
-        return ((CraftWorld) location.getWorld()).getHandle().getBiome(new BlockPos(location.getBlockX(), location.getBlockY(), location.getBlockZ()));
-    }
-
-    @Override
-    public String getTrueBiomeBaseKey(Location location) {
-        return getKeyForBiomeBase(getTrueBiomeBase(location));
-    }
-
-    @Override
-    public Object getCustomBiomeBaseFor(String mckey) {
-        return getCustomBiomeRegistry().get(new ResourceLocation(mckey));
-    }
-
-    @Override
-    public Object getCustomBiomeBaseHolderFor(String mckey) {
-        return getCustomBiomeRegistry().getHolder(getTrueBiomeBaseId(getCustomBiomeRegistry().get(new ResourceLocation(mckey)))).get();
-    }
-
-    public int getBiomeBaseIdForKey(String key) {
-        return getCustomBiomeRegistry().getId(getCustomBiomeRegistry().get(new ResourceLocation(key)));
-    }
-
-    @Override
-    public String getKeyForBiomeBase(Object biomeBase) {
-        return getCustomBiomeRegistry().getKey((net.minecraft.world.level.biome.Biome) biomeBase).getPath(); // something, not something:something
-    }
-
-    @Override
-    public Object getBiomeBase(World world, Biome biome) {
-        return CraftBlock.biomeToBiomeBase(((CraftWorld) world).getHandle()
-                .registryAccess().registry(Registries.BIOME).orElse(null), biome);
-    }
-
-    @Override
-    public Object getBiomeBase(Object registry, Biome biome) {
-        Object v = baseBiomeCache.get(biome);
-
-        if (v != null) {
-            return v;
-        }
-        //noinspection unchecked
-        v = CraftBlock.biomeToBiomeBase((Registry<net.minecraft.world.level.biome.Biome>) registry, biome);
-        if (v == null) {
-            // Ok so there is this new biome name called "CUSTOM" in Paper's new releases.
-            // But, this does NOT exist within CraftBukkit which makes it return an error.
-            // So, we will just return the ID that the plains biome returns instead.
-            //noinspection unchecked
-            return CraftBlock.biomeToBiomeBase((Registry<net.minecraft.world.level.biome.Biome>) registry, Biome.PLAINS);
-        }
-        baseBiomeCache.put(biome, v);
-        return v;
-    }
-
-
-    @Override
-    public KList<Biome> getBiomes() {
-        return new KList<>(Biome.values()).qdel(Biome.CHERRY_GROVE).qdel(Biome.CUSTOM);
-    }
-
-    @Override
-    public boolean isBukkit() {
-        return true;
-    }
-
-    @Override
-    public int getBiomeId(Biome biome) {
-        for (World i : Bukkit.getWorlds()) {
-            if (i.getEnvironment().equals(World.Environment.NORMAL)) {
-                Registry<net.minecraft.world.level.biome.Biome> registry = ((CraftWorld) i).getHandle().registryAccess().registry(Registries.BIOME).orElse(null);
-                return registry.getId((net.minecraft.world.level.biome.Biome) getBiomeBase(registry, biome));
-            }
-        }
-
-        return biome.ordinal();
-    }
-
-    private MCAIdMap<net.minecraft.world.level.biome.Biome> getBiomeMapping() {
-        return biomeMapCache.aquire(() -> new MCAIdMap<>() {
-            @NotNull
-            @Override
-            public Iterator<net.minecraft.world.level.biome.Biome> iterator() {
-                return getCustomBiomeRegistry().iterator();
-            }
-
-            @Override
-            public int getId(net.minecraft.world.level.biome.Biome paramT) {
-                return getCustomBiomeRegistry().getId(paramT);
-            }
-
-            @Override
-            public net.minecraft.world.level.biome.Biome byId(int paramInt) {
-                return (net.minecraft.world.level.biome.Biome) getBiomeBaseFromId(paramInt);
-            }
-        });
-    }
-
-    @NotNull
-    private MCABiomeContainer getBiomeContainerInterface(MCAIdMap<net.minecraft.world.level.biome.Biome> biomeMapping, MCAChunkBiomeContainer<net.minecraft.world.level.biome.Biome> base) {
-        return new MCABiomeContainer() {
-            @Override
-            public int[] getData() {
-                return base.writeBiomes();
-            }
-
-            @Override
-            public void setBiome(int x, int y, int z, int id) {
-                base.setBiome(x, y, z, biomeMapping.byId(id));
-            }
-
-            @Override
-            public int getBiome(int x, int y, int z) {
-                return biomeMapping.getId(base.getBiome(x, y, z));
-            }
-        };
-    }
-
-    @Override
-    public MCABiomeContainer newBiomeContainer(int min, int max) {
-        MCAChunkBiomeContainer<net.minecraft.world.level.biome.Biome> base = new MCAChunkBiomeContainer<>(getBiomeMapping(), min, max);
-        return getBiomeContainerInterface(getBiomeMapping(), base);
-    }
-
-    @Override
-    public MCABiomeContainer newBiomeContainer(int min, int max, int[] data) {
-        MCAChunkBiomeContainer<net.minecraft.world.level.biome.Biome> base = new MCAChunkBiomeContainer<>(getBiomeMapping(), min, max, data);
-        return getBiomeContainerInterface(getBiomeMapping(), base);
-    }
-
-    @Override
-    public int countCustomBiomes() {
-        AtomicInteger a = new AtomicInteger(0);
-
-        getCustomBiomeRegistry().keySet().forEach((i) -> {
-            if (i.getNamespace().equals("minecraft")) {
-                return;
-            }
-
-            a.incrementAndGet();
-            Iris.debug("Custom Biome: " + i);
-        });
-
-        return a.get();
-    }
-
-    public boolean supportsDataPacks() {
-        return true;
-    }
-
-    public void setBiomes(int cx, int cz, World world, Hunk<Object> biomes) {
-        LevelChunk c = ((CraftWorld) world).getHandle().getChunk(cx, cz);
-        biomes.iterateSync((x, y, z, b) -> c.setBiome(x, y, z, (Holder<net.minecraft.world.level.biome.Biome>) b));
-        c.setUnsaved(true);
-    }
-
-    @Override
-    public void forceBiomeInto(int x, int y, int z, Object somethingVeryDirty, ChunkGenerator.BiomeGrid chunk) {
-        try {
-            ChunkAccess s = (ChunkAccess) getFieldForBiomeStorage(chunk).get(chunk);
-            Holder<net.minecraft.world.level.biome.Biome> biome = (Holder<net.minecraft.world.level.biome.Biome>) somethingVeryDirty;
-            s.setBiome(x, y, z, biome);
-        } catch (IllegalAccessException e) {
-            Iris.reportError(e);
-            e.printStackTrace();
-        }
-    }
-
-    private Field getFieldForBiomeStorage(Object storage) {
-        Field f = biomeStorageCache;
-
-        if (f != null) {
-            return f;
-        }
-        try {
-            f = storage.getClass().getDeclaredField("biome");
-            f.setAccessible(true);
-            return f;
-        } catch (Throwable e) {
-            Iris.reportError(e);
-            e.printStackTrace();
-            Iris.error(storage.getClass().getCanonicalName());
-        }
-
-        biomeStorageCache = f;
-        return null;
-    }
-
-    @Override
-    public MCAPaletteAccess createPalette() {
-        MCAIdMapper<BlockState> registry = registryCache.aquireNasty(() -> {
-            Field cf = net.minecraft.core.IdMapper.class.getDeclaredField("tToId");
-            Field df = net.minecraft.core.IdMapper.class.getDeclaredField("idToT");
-            Field bf = net.minecraft.core.IdMapper.class.getDeclaredField("nextId");
-            cf.setAccessible(true);
-            df.setAccessible(true);
-            bf.setAccessible(true);
-            net.minecraft.core.IdMapper<BlockState> blockData = Block.BLOCK_STATE_REGISTRY;
-            int b = bf.getInt(blockData);
-            Object2IntMap<BlockState> c = (Object2IntMap<BlockState>) cf.get(blockData);
-            List<BlockState> d = (List<BlockState>) df.get(blockData);
-            return new MCAIdMapper<BlockState>(c, d, b);
-        });
-        MCAPalette<BlockState> global = globalCache.aquireNasty(() -> new MCAGlobalPalette<>(registry, ((CraftBlockData) AIR).getState()));
-        MCAPalettedContainer<BlockState> container = new MCAPalettedContainer<>(global, registry,
-                i -> ((CraftBlockData) NBTWorld.getBlockData(i)).getState(),
-                i -> NBTWorld.getCompound(CraftBlockData.fromData(i)),
-                ((CraftBlockData) AIR).getState());
-        return new MCAWrappedPalettedContainer<>(container,
-                i -> NBTWorld.getCompound(CraftBlockData.fromData(i)),
-                i -> ((CraftBlockData) NBTWorld.getBlockData(i)).getState());
-    }
-
-    @Override
-    public void injectBiomesFromMantle(Chunk e, Mantle mantle) {
-        ChunkAccess chunk = ((CraftChunk) e).getHandle(ChunkStatus.FULL);
-        AtomicInteger c = new AtomicInteger();
-        AtomicInteger r = new AtomicInteger();
-        mantle.iterateChunk(e.getX(), e.getZ(), MatterBiomeInject.class, (x, y, z, b) -> {
-            if (b != null) {
-                if (b.isCustom()) {
-                    chunk.setBiome(x, y, z, getCustomBiomeRegistry().getHolder(b.getBiomeId()).get());
-                    c.getAndIncrement();
-                } else {
-                    chunk.setBiome(x, y, z, (Holder<net.minecraft.world.level.biome.Biome>) getBiomeBase(e.getWorld(), b.getBiome()));
-                    r.getAndIncrement();
-                }
-            }
-        });
-    }
-
-    public ItemStack applyCustomNbt(ItemStack itemStack, KMap<String, Object> customNbt) throws IllegalArgumentException {
-        if (customNbt != null && !customNbt.isEmpty()) {
-            net.minecraft.world.item.ItemStack s = CraftItemStack.asNMSCopy(itemStack);
-
-            try {
-                net.minecraft.nbt.CompoundTag tag = TagParser.parseTag((new JSONObject(customNbt)).toString());
-                tag.merge(s.getOrCreateTag());
-                s.setTag(tag);
-            } catch (CommandSyntaxException var5) {
-                throw new IllegalArgumentException(var5);
-            }
-
-            return CraftItemStack.asBukkitCopy(s);
-        } else {
-            return itemStack;
-        }
-    }
-
-    public void setTreasurePos(Dolphin dolphin, com.volmit.iris.core.nms.container.BlockPos pos) {
-        CraftDolphin cd = (CraftDolphin)dolphin;
-        cd.getHandle().setTreasurePos(new BlockPos(pos.getX(), pos.getY(), pos.getZ()));
-        cd.getHandle().setGotFish(true);
-    }
-
-    public void inject(long seed, Engine engine, World world) {
-        var chunkMap = ((CraftWorld)world).getHandle().getChunkSource().chunkMap;
-        chunkMap.generator = new IrisChunkGenerator(chunkMap.generator, seed, engine, world);
-    }
-
-    public Vector3d getBoundingbox(org.bukkit.entity.EntityType entity) {
-        Field[] fields = EntityType.class.getDeclaredFields();
-        for (Field field : fields) {
-            if (Modifier.isStatic(field.getModifiers()) && field.getType().equals(EntityType.class)) {
-                try {
-                    EntityType entityType = (EntityType) field.get(null);
-                    if (entityType.getDescriptionId().equals("entity.minecraft." + entity.name().toLowerCase())) {
-                        Vector<Float> v1 = new Vector<>();
-                        v1.add(entityType.getHeight());
-                        entityType.getDimensions();
-                        Vector3d box = new Vector3d( entityType.getWidth(), entityType.getHeight(),  entityType.getWidth());
-                        //System.out.println("Entity Type: " + entityType.getDescriptionId() + ", " + "Height: " + height + ", Width: " + width);
-                        return box;
-                    }
-                } catch (IllegalAccessException e) {
-                    Iris.error("Unable to get entity dimensions!");
-                    e.printStackTrace();
-                }
-            }
-        }
-        return null;
-    }
-
-    @Override
-    public Entity spawnEntity(Location location, org.bukkit.entity.EntityType type, CreatureSpawnEvent.SpawnReason reason) {
-        if (type ==  org.bukkit.entity.EntityType.CAMEL) {
-            return null;
-        }
-        return ((CraftWorld) location.getWorld()).spawn(location, type.getEntityClass(), null, reason);
-    }
-
-    @Override
-    public Color getBiomeColor(Location location, BiomeColor type) {
-        LevelReader reader = ((CraftWorld) location.getWorld()).getHandle();
-        var holder = reader.getBiome(new BlockPos(location.getBlockX(), location.getBlockY(), location.getBlockZ()));
-        var biome = holder.value();
-        if (biome == null) throw new IllegalArgumentException("Invalid biome: " + holder.unwrapKey().orElse(null));
-
-        int rgba = switch (type) {
-            case FOG -> biome.getFogColor();
-            case WATER -> biome.getWaterColor();
-            case WATER_FOG -> biome.getWaterFogColor();
-            case SKY -> biome.getSkyColor();
-            case FOLIAGE -> biome.getFoliageColor();
-            case GRASS -> biome.getGrassColor(location.getBlockX(), location.getBlockZ());
-        };
-        if (rgba == 0) {
-            if (BiomeColor.FOLIAGE == type && biome.getSpecialEffects().getFoliageColorOverride().isEmpty())
-                return null;
-            if (BiomeColor.GRASS == type && biome.getSpecialEffects().getGrassColorOverride().isEmpty())
-                return null;
-        }
-        return new Color(rgba, true);
-    }
-
-    @Override
-    public KList<String> getStructureKeys() {
-        KList<String> keys = new KList<>();
-
-        var registry = registry().registry(Registries.STRUCTURE).orElse(null);
-        if (registry == null) return keys;
-        registry.keySet().stream().map(ResourceLocation::toString).forEach(keys::add);
-        registry.getTags()
-                .map(Pair::getFirst)
-                .map(TagKey::location)
-                .map(ResourceLocation::toString)
-                .map(s -> "#" + s)
-                .forEach(keys::add);
-
-        return keys;
-    }
-
-    private static Field getField(Class<?> clazz, Class<?> fieldType) throws NoSuchFieldException {
-        try {
-            for (Field f : clazz.getDeclaredFields()) {
-                if (f.getType().equals(fieldType))
-                    return f;
-            }
-            throw new NoSuchFieldException(fieldType.getName());
-        } catch (NoSuchFieldException var4) {
-            Class<?> superClass = clazz.getSuperclass();
-            if (superClass == null) {
-                throw var4;
-            } else {
-                return getField(superClass, fieldType);
-            }
-        }
-    }
-}

nms/v1_20_R1/src/main/java/com/volmit/iris/core/nms/v1_20_R1/NMSBinding.java

@@ -2,8 +2,10 @@ package com.volmit.iris.core.nms.v1_20_R1;
 
 import com.mojang.brigadier.exceptions.CommandSyntaxException;
 import com.mojang.datafixers.util.Pair;
+import com.mojang.serialization.Lifecycle;
 import com.volmit.iris.Iris;
 import com.volmit.iris.core.nms.INMSBinding;
+import com.volmit.iris.core.nms.container.AutoClosing;
 import com.volmit.iris.core.nms.container.BiomeColor;
 import com.volmit.iris.engine.data.cache.AtomicCache;
 import com.volmit.iris.engine.framework.Engine;
@@ -20,14 +22,16 @@ import com.volmit.iris.util.nbt.mca.palette.*;
 import com.volmit.iris.util.nbt.tag.CompoundTag;
 import com.volmit.iris.util.scheduling.J;
 import it.unimi.dsi.fastutil.objects.Object2IntMap;
-import net.minecraft.core.BlockPos;
+import lombok.SneakyThrows;
-import net.minecraft.core.Holder;
+import net.minecraft.core.*;
 import net.minecraft.core.Registry;
-import net.minecraft.core.RegistryAccess;
 import net.minecraft.core.registries.Registries;
 import net.minecraft.nbt.*;
 import net.minecraft.nbt.Tag;
+import net.minecraft.resources.ResourceKey;
 import net.minecraft.resources.ResourceLocation;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.WorldLoader;
 import net.minecraft.server.commands.data.BlockDataAccessor;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.tags.TagKey;
@@ -41,6 +45,8 @@ import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.level.chunk.ChunkAccess;
 import net.minecraft.world.level.chunk.ChunkStatus;
 import net.minecraft.world.level.chunk.LevelChunk;
+import net.minecraft.world.level.dimension.DimensionType;
+import net.minecraft.world.level.dimension.LevelStem;
 import org.bukkit.*;
 import org.bukkit.block.Biome;
 import org.bukkit.block.data.BlockData;
@@ -73,11 +79,10 @@ import java.io.DataOutputStream;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
-import java.util.Iterator;
+import java.util.*;
-import java.util.List;
-import java.util.Map;
-import java.util.Vector;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.locks.ReentrantLock;
+import java.util.function.Function;
 
 public class NMSBinding implements INMSBinding {
 
@@ -85,9 +90,11 @@ public class NMSBinding implements INMSBinding {
     private final KMap<Biome, Object> baseBiomeCache = new KMap<>();
     private final BlockData AIR = Material.AIR.createBlockData();
     private final AtomicCache<MCAIdMap<net.minecraft.world.level.biome.Biome>> biomeMapCache = new AtomicCache<>();
+    private final AtomicCache<WorldLoader.DataLoadContext> dataLoadContext = new AtomicCache<>();
     private final AtomicCache<MCAIdMapper<BlockState>> registryCache = new AtomicCache<>();
     private final AtomicCache<MCAPalette<BlockState>> globalCache = new AtomicCache<>();
     private final AtomicCache<RegistryAccess> registryAccess = new AtomicCache<>();
+    private final ReentrantLock dataContextLock = new ReentrantLock(true);
     private final AtomicCache<Method> byIdRef = new AtomicCache<>();
     private Field biomeStorageCache = null;
 
@@ -214,7 +221,7 @@ public class NMSBinding implements INMSBinding {
                     .newBlockEntity(blockPos, state);
         }
         var accessor = new BlockDataAccessor(blockEntity, blockPos);
-        accessor.setData(tag.merge(accessor.getData()));
+        accessor.setData(accessor.getData().merge(tag));
     }
 
     private Tag convertToTag(Object object, int depth, int maxDepth) {
@@ -568,6 +575,9 @@ public class NMSBinding implements INMSBinding {
 
     public void inject(long seed, Engine engine, World world) {
         var chunkMap = ((CraftWorld)world).getHandle().getChunkSource().chunkMap;
+        var dimensionType = chunkMap.level.dimensionTypeRegistration().unwrapKey().orElse(null);
+        if (dimensionType != null && !dimensionType.location().getNamespace().equals("iris"))
+            Iris.error("Loaded world %s with invalid dimension type! (%s)", world.getName(), dimensionType.location().toString());
         chunkMap.generator = new IrisChunkGenerator(chunkMap.generator, seed, engine, world);
     }
 
@@ -628,4 +638,98 @@ public class NMSBinding implements INMSBinding {
             }
         }
     }
+
+    @Override
+    public AutoClosing injectLevelStems() {
+        return inject(this::supplier);
+    }
+
+    @Override
+    @SneakyThrows
+    public com.volmit.iris.core.nms.container.Pair<Integer, AutoClosing> injectUncached(boolean overworld, boolean nether, boolean end) {
+        var reg = registry();
+        var field = getField(RegistryAccess.ImmutableRegistryAccess.class, Map.class);
+        field.setAccessible(true);
+
+        AutoClosing closing = inject(old -> new WorldLoader.DataLoadContext(
+                        old.resources(),
+                        old.dataConfiguration(),
+                        old.datapackWorldgen(),
+                        createRegistryAccess(old.datapackDimensions(), true, overworld, nether, end)
+                )
+        );
+
+        var injected = ((CraftServer) Bukkit.getServer()).getServer().worldLoader.datapackDimensions().registryOrThrow(Registries.LEVEL_STEM);
+        var old = (Map<ResourceKey<? extends Registry<?>>, Registry<?>>) field.get(reg);
+        var fake = new HashMap<>(old);
+        fake.put(Registries.LEVEL_STEM, injected);
+        field.set(reg, fake);
+
+        return new com.volmit.iris.core.nms.container.Pair<>(
+                injected.size(),
+                new AutoClosing(() -> {
+                    closing.close();
+                    field.set(reg, old);
+                }));
+    }
+
+    private WorldLoader.DataLoadContext supplier(WorldLoader.DataLoadContext old) {
+        return dataLoadContext.aquire(() -> new WorldLoader.DataLoadContext(
+                old.resources(),
+                old.dataConfiguration(),
+                old.datapackWorldgen(),
+                createRegistryAccess(old.datapackDimensions(), false, true, true, true)
+        ));
+    }
+
+    @SneakyThrows
+    private AutoClosing inject(Function<WorldLoader.DataLoadContext, WorldLoader.DataLoadContext> transformer) {
+        if (!dataContextLock.tryLock()) throw new IllegalStateException("Failed to inject data context!");
+
+        var server = ((CraftServer) Bukkit.getServer());
+        var field = getField(MinecraftServer.class, WorldLoader.DataLoadContext.class);
+        var nmsServer = server.getServer();
+        var old = nmsServer.worldLoader;
+
+        field.setAccessible(true);
+        field.set(nmsServer, transformer.apply(old));
+
+        return new AutoClosing(() -> {
+            field.set(nmsServer, old);
+            dataContextLock.unlock();
+        });
+    }
+
+    private RegistryAccess.Frozen createRegistryAccess(RegistryAccess.Frozen datapack, boolean copy, boolean overworld, boolean nether, boolean end) {
+        var access = registry();
+        var dimensions = access.registryOrThrow(Registries.DIMENSION_TYPE);
+        var levelStems = access.registryOrThrow(Registries.LEVEL_STEM);
+
+        var fake = new MappedRegistry<>(Registries.LEVEL_STEM, Lifecycle.experimental());
+        if (overworld) register(fake, levelStems, dimensions, LevelStem.OVERWORLD);
+        if (nether) register(fake, levelStems, dimensions, LevelStem.NETHER);
+        if (end) register(fake, levelStems, dimensions, LevelStem.END);
+        copy(fake, datapack.registry(Registries.LEVEL_STEM).orElse(null));
+
+        if (copy) copy(fake, levelStems);
+
+        return new RegistryAccess.Frozen.ImmutableRegistryAccess(List.of(fake.freeze())).freeze();
+    }
+
+    private void register(MappedRegistry<LevelStem> target, Registry<LevelStem> levelStems, Registry<DimensionType> dimensions, ResourceKey<LevelStem> key) {
+        target.register(key, new LevelStem(
+                dimensions.getHolderOrThrow(ResourceKey.create(Registries.DIMENSION_TYPE, new ResourceLocation("iris", key.location().getPath()))),
+                levelStems.getOrThrow(key).generator()
+        ), Lifecycle.stable());
+    }
+
+    private void copy(MappedRegistry<LevelStem> target, Registry<LevelStem> source) {
+        if (source == null) return;
+        source.registryKeySet().forEach(key -> {
+            var value = source.get(key);
+            var info = source.lifecycle(value);
+            if (value != null && info != null && !target.containsKey(key))
+                target.register(key, value, info);
+        });
+    }
 }

nms/v1_20_R2/src/main/java/com/volmit/iris/core/nms/v1_20_R2/NMSBinding.java

@@ -8,21 +8,29 @@ import java.io.DataOutputStream;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
-import java.util.Iterator;
+import java.util.*;
-import java.util.List;
-import java.util.Map;
-import java.util.Vector;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.locks.ReentrantLock;
+import java.util.function.Function;
 
 import com.mojang.datafixers.util.Pair;
+import com.mojang.serialization.Lifecycle;
+import com.volmit.iris.core.nms.container.AutoClosing;
 import com.volmit.iris.core.nms.container.BiomeColor;
 import com.volmit.iris.util.scheduling.J;
+import lombok.SneakyThrows;
+import net.minecraft.core.*;
+import net.minecraft.core.Registry;
 import net.minecraft.nbt.*;
 import net.minecraft.nbt.Tag;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.WorldLoader;
 import net.minecraft.server.commands.data.BlockDataAccessor;
 import net.minecraft.tags.TagKey;
 import net.minecraft.world.level.LevelReader;
 import net.minecraft.world.level.block.EntityBlock;
+import net.minecraft.world.level.dimension.DimensionType;
+import net.minecraft.world.level.dimension.LevelStem;
 import org.bukkit.*;
 import org.bukkit.block.Biome;
 import org.bukkit.block.data.BlockData;
@@ -61,10 +69,6 @@ import com.volmit.iris.util.nbt.mca.palette.*;
 import com.volmit.iris.util.nbt.tag.CompoundTag;
 
 import it.unimi.dsi.fastutil.objects.Object2IntMap;
-import net.minecraft.core.BlockPos;
-import net.minecraft.core.Holder;
-import net.minecraft.core.Registry;
-import net.minecraft.core.RegistryAccess;
 import net.minecraft.core.registries.Registries;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.resources.ResourceLocation;
@@ -83,9 +87,11 @@ public class NMSBinding implements INMSBinding {
     private final KMap<Biome, Object> baseBiomeCache = new KMap<>();
     private final BlockData AIR = Material.AIR.createBlockData();
     private final AtomicCache<MCAIdMap<net.minecraft.world.level.biome.Biome>> biomeMapCache = new AtomicCache<>();
+    private final AtomicCache<WorldLoader.DataLoadContext> dataLoadContext = new AtomicCache<>();
     private final AtomicCache<MCAIdMapper<BlockState>> registryCache = new AtomicCache<>();
     private final AtomicCache<MCAPalette<BlockState>> globalCache = new AtomicCache<>();
     private final AtomicCache<RegistryAccess> registryAccess = new AtomicCache<>();
+    private final ReentrantLock dataContextLock = new ReentrantLock(true);
     private final AtomicCache<Method> byIdRef = new AtomicCache<>();
     private Field biomeStorageCache = null;
 
@@ -212,7 +218,7 @@ public class NMSBinding implements INMSBinding {
                     .newBlockEntity(blockPos, state);
         }
         var accessor = new BlockDataAccessor(blockEntity, blockPos);
-        accessor.setData(tag.merge(accessor.getData()));
+        accessor.setData(accessor.getData().merge(tag));
     }
 
     private Tag convertToTag(Object object, int depth, int maxDepth) {
@@ -538,6 +544,9 @@ public class NMSBinding implements INMSBinding {
 
     public void inject(long seed, Engine engine, World world) {
         var chunkMap = ((CraftWorld)world).getHandle().getChunkSource().chunkMap;
+        var dimensionType = chunkMap.level.dimensionTypeRegistration().unwrapKey().orElse(null);
+        if (dimensionType != null && !dimensionType.location().getNamespace().equals("iris"))
+            Iris.error("Loaded world %s with invalid dimension type! (%s)", world.getName(), dimensionType.location().toString());
         chunkMap.generator = new IrisChunkGenerator(chunkMap.generator, seed, engine, world);
     }
 
@@ -630,4 +639,98 @@ public class NMSBinding implements INMSBinding {
     public static Holder<net.minecraft.world.level.biome.Biome> biomeToBiomeBase(Registry<net.minecraft.world.level.biome.Biome> registry, Biome biome) {
         return registry.getHolderOrThrow(ResourceKey.create(Registries.BIOME, CraftNamespacedKey.toMinecraft(biome.getKey())));
     }
+
+    @Override
+    public AutoClosing injectLevelStems() {
+        return inject(this::supplier);
+    }
+
+    @Override
+    @SneakyThrows
+    public com.volmit.iris.core.nms.container.Pair<Integer, AutoClosing> injectUncached(boolean overworld, boolean nether, boolean end) {
+        var reg = registry();
+        var field = getField(RegistryAccess.ImmutableRegistryAccess.class, Map.class);
+        field.setAccessible(true);
+
+        AutoClosing closing = inject(old -> new WorldLoader.DataLoadContext(
+                        old.resources(),
+                        old.dataConfiguration(),
+                        old.datapackWorldgen(),
+                        createRegistryAccess(old.datapackDimensions(), true, overworld, nether, end)
+                )
+        );
+
+        var injected = ((CraftServer) Bukkit.getServer()).getServer().worldLoader.datapackDimensions().registryOrThrow(Registries.LEVEL_STEM);
+        var old = (Map<ResourceKey<? extends Registry<?>>, Registry<?>>) field.get(reg);
+        var fake = new HashMap<>(old);
+        fake.put(Registries.LEVEL_STEM, injected);
+        field.set(reg, fake);
+
+        return new com.volmit.iris.core.nms.container.Pair<>(
+                injected.size(),
+                new AutoClosing(() -> {
+                    closing.close();
+                    field.set(reg, old);
+                }));
+    }
+
+    private WorldLoader.DataLoadContext supplier(WorldLoader.DataLoadContext old) {
+        return dataLoadContext.aquire(() -> new WorldLoader.DataLoadContext(
+                old.resources(),
+                old.dataConfiguration(),
+                old.datapackWorldgen(),
+                createRegistryAccess(old.datapackDimensions(), false, true, true, true)
+        ));
+    }
+
+    @SneakyThrows
+    private AutoClosing inject(Function<WorldLoader.DataLoadContext, WorldLoader.DataLoadContext> transformer) {
+        if (!dataContextLock.tryLock()) throw new IllegalStateException("Failed to inject data context!");
+
+        var server = ((CraftServer) Bukkit.getServer());
+        var field = getField(MinecraftServer.class, WorldLoader.DataLoadContext.class);
+        var nmsServer = server.getServer();
+        var old = nmsServer.worldLoader;
+
+        field.setAccessible(true);
+        field.set(nmsServer, transformer.apply(old));
+
+        return new AutoClosing(() -> {
+            field.set(nmsServer, old);
+            dataContextLock.unlock();
+        });
+    }
+
+    private RegistryAccess.Frozen createRegistryAccess(RegistryAccess.Frozen datapack, boolean copy, boolean overworld, boolean nether, boolean end) {
+        var access = registry();
+        var dimensions = access.registryOrThrow(Registries.DIMENSION_TYPE);
+        var levelStems = access.registryOrThrow(Registries.LEVEL_STEM);
+
+        var fake = new MappedRegistry<>(Registries.LEVEL_STEM, Lifecycle.experimental());
+        if (overworld) register(fake, levelStems, dimensions, LevelStem.OVERWORLD);
+        if (nether) register(fake, levelStems, dimensions, LevelStem.NETHER);
+        if (end) register(fake, levelStems, dimensions, LevelStem.END);
+        copy(fake, datapack.registry(Registries.LEVEL_STEM).orElse(null));
+
+        if (copy) copy(fake, levelStems);
+
+        return new RegistryAccess.Frozen.ImmutableRegistryAccess(List.of(fake.freeze())).freeze();
+    }
+
+    private void register(MappedRegistry<LevelStem> target, Registry<LevelStem> levelStems, Registry<DimensionType> dimensions, ResourceKey<LevelStem> key) {
+        target.register(key, new LevelStem(
+                dimensions.getHolderOrThrow(ResourceKey.create(Registries.DIMENSION_TYPE, new ResourceLocation("iris", key.location().getPath()))),
+                levelStems.getOrThrow(key).generator()
+        ), Lifecycle.stable());
+    }
+
+    private void copy(MappedRegistry<LevelStem> target, Registry<LevelStem> source) {
+        if (source == null) return;
+        source.registryKeySet().forEach(key -> {
+            var value = source.get(key);
+            var info = source.lifecycle(value);
+            if (value != null && info != null && !target.containsKey(key))
+                target.register(key, value, info);
+        });
+    }
 }

nms/v1_20_R3/src/main/java/com/volmit/iris/core/nms/v1_20_R3/NMSBinding.java

@@ -8,21 +8,29 @@ import java.io.DataOutputStream;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
-import java.util.Iterator;
+import java.util.*;
-import java.util.List;
-import java.util.Map;
-import java.util.Vector;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.locks.ReentrantLock;
+import java.util.function.Function;
 
 import com.mojang.datafixers.util.Pair;
+import com.mojang.serialization.Lifecycle;
+import com.volmit.iris.core.nms.container.AutoClosing;
 import com.volmit.iris.core.nms.container.BiomeColor;
 import com.volmit.iris.util.scheduling.J;
+import lombok.SneakyThrows;
+import net.minecraft.core.*;
+import net.minecraft.core.Registry;
 import net.minecraft.nbt.*;
 import net.minecraft.nbt.Tag;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.WorldLoader;
 import net.minecraft.server.commands.data.BlockDataAccessor;
 import net.minecraft.tags.TagKey;
 import net.minecraft.world.level.LevelReader;
 import net.minecraft.world.level.block.EntityBlock;
+import net.minecraft.world.level.dimension.DimensionType;
+import net.minecraft.world.level.dimension.LevelStem;
 import org.bukkit.*;
 import org.bukkit.block.Biome;
 import org.bukkit.block.data.BlockData;
@@ -61,10 +69,6 @@ import com.volmit.iris.util.nbt.mca.palette.*;
 import com.volmit.iris.util.nbt.tag.CompoundTag;
 
 import it.unimi.dsi.fastutil.objects.Object2IntMap;
-import net.minecraft.core.BlockPos;
-import net.minecraft.core.Holder;
-import net.minecraft.core.Registry;
-import net.minecraft.core.RegistryAccess;
 import net.minecraft.core.registries.Registries;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.resources.ResourceLocation;
@@ -83,9 +87,11 @@ public class NMSBinding implements INMSBinding {
     private final KMap<Biome, Object> baseBiomeCache = new KMap<>();
     private final BlockData AIR = Material.AIR.createBlockData();
     private final AtomicCache<MCAIdMap<net.minecraft.world.level.biome.Biome>> biomeMapCache = new AtomicCache<>();
+    private final AtomicCache<WorldLoader.DataLoadContext> dataLoadContext = new AtomicCache<>();
     private final AtomicCache<MCAIdMapper<BlockState>> registryCache = new AtomicCache<>();
     private final AtomicCache<MCAPalette<BlockState>> globalCache = new AtomicCache<>();
     private final AtomicCache<RegistryAccess> registryAccess = new AtomicCache<>();
+    private final ReentrantLock dataContextLock = new ReentrantLock(true);
     private final AtomicCache<Method> byIdRef = new AtomicCache<>();
     private Field biomeStorageCache = null;
 
@@ -212,7 +218,7 @@ public class NMSBinding implements INMSBinding {
                     .newBlockEntity(blockPos, state);
         }
         var accessor = new BlockDataAccessor(blockEntity, blockPos);
-        accessor.setData(tag.merge(accessor.getData()));
+        accessor.setData(accessor.getData().merge(tag));
     }
 
     private Tag convertToTag(Object object, int depth, int maxDepth) {
@@ -538,6 +544,9 @@ public class NMSBinding implements INMSBinding {
 
     public void inject(long seed, Engine engine, World world) {
         var chunkMap = ((CraftWorld)world).getHandle().getChunkSource().chunkMap;
+        var dimensionType = chunkMap.level.dimensionTypeRegistration().unwrapKey().orElse(null);
+        if (dimensionType != null && !dimensionType.location().getNamespace().equals("iris"))
+            Iris.error("Loaded world %s with invalid dimension type! (%s)", world.getName(), dimensionType.location().toString());
         chunkMap.generator = new IrisChunkGenerator(chunkMap.generator, seed, engine, world);
     }
 
@@ -631,4 +640,98 @@ public class NMSBinding implements INMSBinding {
     public static Holder<net.minecraft.world.level.biome.Biome> biomeToBiomeBase(Registry<net.minecraft.world.level.biome.Biome> registry, Biome biome) {
         return registry.getHolderOrThrow(ResourceKey.create(Registries.BIOME, CraftNamespacedKey.toMinecraft(biome.getKey())));
     }
+
+    @Override
+    public AutoClosing injectLevelStems() {
+        return inject(this::supplier);
+    }
+
+    @Override
+    @SneakyThrows
+    public com.volmit.iris.core.nms.container.Pair<Integer, AutoClosing> injectUncached(boolean overworld, boolean nether, boolean end) {
+        var reg = registry();
+        var field = getField(RegistryAccess.ImmutableRegistryAccess.class, Map.class);
+        field.setAccessible(true);
+
+        AutoClosing closing = inject(old -> new WorldLoader.DataLoadContext(
+                        old.resources(),
+                        old.dataConfiguration(),
+                        old.datapackWorldgen(),
+                        createRegistryAccess(old.datapackDimensions(), true, overworld, nether, end)
+                )
+        );
+
+        var injected = ((CraftServer) Bukkit.getServer()).getServer().worldLoader.datapackDimensions().registryOrThrow(Registries.LEVEL_STEM);
+        var old = (Map<ResourceKey<? extends Registry<?>>, Registry<?>>) field.get(reg);
+        var fake = new HashMap<>(old);
+        fake.put(Registries.LEVEL_STEM, injected);
+        field.set(reg, fake);
+
+        return new com.volmit.iris.core.nms.container.Pair<>(
+                injected.size(),
+                new AutoClosing(() -> {
+                    closing.close();
+                    field.set(reg, old);
+                }));
+    }
+
+    private WorldLoader.DataLoadContext supplier(WorldLoader.DataLoadContext old) {
+        return dataLoadContext.aquire(() -> new WorldLoader.DataLoadContext(
+                old.resources(),
+                old.dataConfiguration(),
+                old.datapackWorldgen(),
+                createRegistryAccess(old.datapackDimensions(), false, true, true, true)
+        ));
+    }
+
+    @SneakyThrows
+    private AutoClosing inject(Function<WorldLoader.DataLoadContext, WorldLoader.DataLoadContext> transformer) {
+        if (!dataContextLock.tryLock()) throw new IllegalStateException("Failed to inject data context!");
+
+        var server = ((CraftServer) Bukkit.getServer());
+        var field = getField(MinecraftServer.class, WorldLoader.DataLoadContext.class);
+        var nmsServer = server.getServer();
+        var old = nmsServer.worldLoader;
+
+        field.setAccessible(true);
+        field.set(nmsServer, transformer.apply(old));
+
+        return new AutoClosing(() -> {
+            field.set(nmsServer, old);
+            dataContextLock.unlock();
+        });
+    }
+
+    private RegistryAccess.Frozen createRegistryAccess(RegistryAccess.Frozen datapack, boolean copy, boolean overworld, boolean nether, boolean end) {
+        var access = registry();
+        var dimensions = access.registryOrThrow(Registries.DIMENSION_TYPE);
+        var levelStems = access.registryOrThrow(Registries.LEVEL_STEM);
+
+        var fake = new MappedRegistry<>(Registries.LEVEL_STEM, Lifecycle.experimental());
+        if (overworld) register(fake, levelStems, dimensions, LevelStem.OVERWORLD);
+        if (nether) register(fake, levelStems, dimensions, LevelStem.NETHER);
+        if (end) register(fake, levelStems, dimensions, LevelStem.END);
+        copy(fake, datapack.registry(Registries.LEVEL_STEM).orElse(null));
+
+        if (copy) copy(fake, levelStems);
+
+        return new RegistryAccess.Frozen.ImmutableRegistryAccess(List.of(fake.freeze())).freeze();
+    }
+
+    private void register(MappedRegistry<LevelStem> target, Registry<LevelStem> levelStems, Registry<DimensionType> dimensions, ResourceKey<LevelStem> key) {
+        target.register(key, new LevelStem(
+                dimensions.getHolderOrThrow(ResourceKey.create(Registries.DIMENSION_TYPE, new ResourceLocation("iris", key.location().getPath()))),
+                levelStems.getOrThrow(key).generator()
+        ), Lifecycle.stable());
+    }
+
+    private void copy(MappedRegistry<LevelStem> target, Registry<LevelStem> source) {
+        if (source == null) return;
+        source.registryKeySet().forEach(key -> {
+            var value = source.get(key);
+            var info = source.lifecycle(value);
+            if (value != null && info != null && !target.containsKey(key))
+                target.register(key, value, info);
+        });
+    }
 }

nms/v1_20_R4/src/main/java/com/volmit/iris/core/nms/v1_20_R4/NMSBinding.java

@@ -6,12 +6,17 @@ import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.util.*;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.locks.ReentrantLock;
+import java.util.function.Function;
 
 import com.mojang.datafixers.util.Pair;
+import com.mojang.serialization.Lifecycle;
+import com.volmit.iris.core.nms.container.AutoClosing;
 import com.volmit.iris.core.nms.container.BiomeColor;
 import com.volmit.iris.core.nms.datapack.DataVersion;
 import com.volmit.iris.util.nbt.tag.CompoundTag;
 import com.volmit.iris.util.scheduling.J;
+import lombok.SneakyThrows;
 import net.minecraft.core.*;
 import net.minecraft.core.Registry;
 import net.minecraft.core.component.DataComponents;
@@ -25,6 +30,8 @@ import net.minecraft.nbt.LongTag;
 import net.minecraft.nbt.ShortTag;
 import net.minecraft.nbt.StringTag;
 import net.minecraft.nbt.Tag;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.WorldLoader;
 import net.minecraft.server.commands.data.BlockDataAccessor;
 import net.minecraft.server.commands.data.DataCommands;
 import net.minecraft.server.level.ServerLevel;
@@ -34,6 +41,8 @@ import net.minecraft.world.level.LevelReader;
 import net.minecraft.world.level.block.EntityBlock;
 import net.minecraft.world.level.block.entity.BlockEntityType;
 import net.minecraft.world.level.chunk.status.ChunkStatus;
+import net.minecraft.world.level.dimension.DimensionType;
+import net.minecraft.world.level.dimension.LevelStem;
 import org.bukkit.*;
 import org.bukkit.block.Biome;
 import org.bukkit.block.data.BlockData;
@@ -86,9 +95,11 @@ public class NMSBinding implements INMSBinding {
     private final KMap<Biome, Object> baseBiomeCache = new KMap<>();
     private final BlockData AIR = Material.AIR.createBlockData();
     private final AtomicCache<MCAIdMap<net.minecraft.world.level.biome.Biome>> biomeMapCache = new AtomicCache<>();
+    private final AtomicCache<WorldLoader.DataLoadContext> dataLoadContext = new AtomicCache<>();
     private final AtomicCache<MCAIdMapper<BlockState>> registryCache = new AtomicCache<>();
     private final AtomicCache<MCAPalette<BlockState>> globalCache = new AtomicCache<>();
     private final AtomicCache<RegistryAccess> registryAccess = new AtomicCache<>();
+    private final ReentrantLock dataContextLock = new ReentrantLock(true);
     private final AtomicCache<Method> byIdRef = new AtomicCache<>();
     private Field biomeStorageCache = null;
 
@@ -216,7 +227,7 @@ public class NMSBinding implements INMSBinding {
                     .newBlockEntity(blockPos, state);
         }
         var accessor = new BlockDataAccessor(blockEntity, blockPos);
-        accessor.setData(tag.merge(accessor.getData()));
+        accessor.setData(accessor.getData().merge(tag));
     }
 
     private Tag convertToTag(Object object, int depth, int maxDepth) {
@@ -544,6 +555,10 @@ public class NMSBinding implements INMSBinding {
 
     public void inject(long seed, Engine engine, World world) {
         var chunkMap = ((CraftWorld)world).getHandle().getChunkSource().chunkMap;
+        var dimensionType = chunkMap.level.dimensionTypeRegistration().unwrapKey().orElse(null);
+        if (dimensionType != null && !dimensionType.location().getNamespace().equals("iris"))
+            Iris.error("Loaded world %s with invalid dimension type! (%s)", world.getName(), dimensionType.location().toString());
+
         chunkMap.generator = new IrisChunkGenerator(chunkMap.generator, seed, engine, world);
     }
 
@@ -650,4 +665,98 @@ public class NMSBinding implements INMSBinding {
 
         return keys;
     }
+
+    @Override
+    public AutoClosing injectLevelStems() {
+        return inject(this::supplier);
+    }
+
+    @Override
+    @SneakyThrows
+    public com.volmit.iris.core.nms.container.Pair<Integer, AutoClosing> injectUncached(boolean overworld, boolean nether, boolean end) {
+        var reg = registry();
+        var field = getField(RegistryAccess.ImmutableRegistryAccess.class, Map.class);
+        field.setAccessible(true);
+
+        AutoClosing closing = inject(old -> new WorldLoader.DataLoadContext(
+                        old.resources(),
+                        old.dataConfiguration(),
+                        old.datapackWorldgen(),
+                        createRegistryAccess(old.datapackDimensions(), true, overworld, nether, end)
+                )
+        );
+
+        var injected = ((CraftServer) Bukkit.getServer()).getServer().worldLoader.datapackDimensions().registryOrThrow(Registries.LEVEL_STEM);
+        var old = (Map<ResourceKey<? extends Registry<?>>, Registry<?>>) field.get(reg);
+        var fake = new HashMap<>(old);
+        fake.put(Registries.LEVEL_STEM, injected);
+        field.set(reg, fake);
+
+        return new com.volmit.iris.core.nms.container.Pair<>(
+                injected.size(),
+                new AutoClosing(() -> {
+                    closing.close();
+                    field.set(reg, old);
+                }));
+    }
+
+    private WorldLoader.DataLoadContext supplier(WorldLoader.DataLoadContext old) {
+        return dataLoadContext.aquire(() -> new WorldLoader.DataLoadContext(
+                old.resources(),
+                old.dataConfiguration(),
+                old.datapackWorldgen(),
+                createRegistryAccess(old.datapackDimensions(), false, true, true, true)
+        ));
+    }
+
+    @SneakyThrows
+    private AutoClosing inject(Function<WorldLoader.DataLoadContext, WorldLoader.DataLoadContext> transformer) {
+        if (!dataContextLock.tryLock()) throw new IllegalStateException("Failed to inject data context!");
+
+        var server = ((CraftServer) Bukkit.getServer());
+        var field = getField(MinecraftServer.class, WorldLoader.DataLoadContext.class);
+        var nmsServer = server.getServer();
+        var old = nmsServer.worldLoader;
+
+        field.setAccessible(true);
+        field.set(nmsServer, transformer.apply(old));
+
+        return new AutoClosing(() -> {
+            field.set(nmsServer, old);
+            dataContextLock.unlock();
+        });
+    }
+
+    private RegistryAccess.Frozen createRegistryAccess(RegistryAccess.Frozen datapack, boolean copy, boolean overworld, boolean nether, boolean end) {
+        var access = registry();
+        var dimensions = access.registryOrThrow(Registries.DIMENSION_TYPE);
+        var levelStems = access.registryOrThrow(Registries.LEVEL_STEM);
+
+        var fake = new MappedRegistry<>(Registries.LEVEL_STEM, Lifecycle.experimental());
+        if (overworld) register(fake, levelStems, dimensions, LevelStem.OVERWORLD);
+        if (nether) register(fake, levelStems, dimensions, LevelStem.NETHER);
+        if (end) register(fake, levelStems, dimensions, LevelStem.END);
+        copy(fake, datapack.registry(Registries.LEVEL_STEM).orElse(null));
+
+        if (copy) copy(fake, levelStems);
+
+        return new RegistryAccess.Frozen.ImmutableRegistryAccess(List.of(fake.freeze())).freeze();
+    }
+
+    private void register(MappedRegistry<LevelStem> target, Registry<LevelStem> levelStems, Registry<DimensionType> dimensions, ResourceKey<LevelStem> key) {
+        target.register(key, new LevelStem(
+                dimensions.getHolder(new ResourceLocation("iris", key.location().getPath())).orElseThrow(),
+                levelStems.getOrThrow(key).generator()
+        ), RegistrationInfo.BUILT_IN);
+    }
+
+    private void copy(MappedRegistry<LevelStem> target, Registry<LevelStem> source) {
+        if (source == null) return;
+        source.registryKeySet().forEach(key -> {
+            var value = source.get(key);
+            var info = source.registrationInfo(key).orElse(null);
+            if (value != null && info != null && !target.containsKey(key))
+                target.register(key, value, info);
+        });
+    }
 }

nms/v1_21_R1/src/main/java/com/volmit/iris/core/nms/v1_21_R1/NMSBinding.java

@@ -10,14 +10,23 @@ import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.util.*;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.locks.ReentrantLock;
+import java.util.function.Function;
 
 import com.mojang.datafixers.util.Pair;
+import com.mojang.serialization.Lifecycle;
+import com.volmit.iris.core.nms.container.AutoClosing;
 import com.volmit.iris.core.nms.container.BiomeColor;
 import com.volmit.iris.core.nms.datapack.DataVersion;
 import com.volmit.iris.util.scheduling.J;
+import lombok.SneakyThrows;
+import net.minecraft.core.*;
+import net.minecraft.core.Registry;
 import net.minecraft.core.component.DataComponents;
 import net.minecraft.nbt.*;
 import net.minecraft.nbt.Tag;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.WorldLoader;
 import net.minecraft.server.commands.data.BlockDataAccessor;
 import net.minecraft.server.level.ChunkMap;
 import net.minecraft.tags.TagKey;
@@ -26,6 +35,8 @@ import net.minecraft.world.level.LevelReader;
 import net.minecraft.world.level.block.EntityBlock;
 import net.minecraft.world.level.chunk.status.ChunkStatus;
 import net.minecraft.world.level.chunk.status.WorldGenContext;
+import net.minecraft.world.level.dimension.DimensionType;
+import net.minecraft.world.level.dimension.LevelStem;
 import org.bukkit.*;
 import org.bukkit.block.Biome;
 import org.bukkit.block.data.BlockData;
@@ -64,10 +75,6 @@ import com.volmit.iris.util.nbt.mca.palette.*;
 import com.volmit.iris.util.nbt.tag.CompoundTag;
 
 import it.unimi.dsi.fastutil.objects.Object2IntMap;
-import net.minecraft.core.BlockPos;
-import net.minecraft.core.Holder;
-import net.minecraft.core.Registry;
-import net.minecraft.core.RegistryAccess;
 import net.minecraft.core.registries.Registries;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.resources.ResourceLocation;
@@ -85,9 +92,11 @@ public class NMSBinding implements INMSBinding {
     private final KMap<Biome, Object> baseBiomeCache = new KMap<>();
     private final BlockData AIR = Material.AIR.createBlockData();
     private final AtomicCache<MCAIdMap<net.minecraft.world.level.biome.Biome>> biomeMapCache = new AtomicCache<>();
+    private final AtomicCache<WorldLoader.DataLoadContext> dataLoadContext = new AtomicCache<>();
     private final AtomicCache<MCAIdMapper<BlockState>> registryCache = new AtomicCache<>();
     private final AtomicCache<MCAPalette<BlockState>> globalCache = new AtomicCache<>();
     private final AtomicCache<RegistryAccess> registryAccess = new AtomicCache<>();
+    private final ReentrantLock dataContextLock = new ReentrantLock(true);
     private final AtomicCache<Method> byIdRef = new AtomicCache<>();
     private Field biomeStorageCache = null;
 
@@ -215,7 +224,7 @@ public class NMSBinding implements INMSBinding {
                     .newBlockEntity(blockPos, state);
         }
         var accessor = new BlockDataAccessor(blockEntity, blockPos);
-        accessor.setData(tag.merge(accessor.getData()));
+        accessor.setData(accessor.getData().merge(tag));
     }
 
     private Tag convertToTag(Object object, int depth, int maxDepth) {
@@ -546,6 +555,9 @@ public class NMSBinding implements INMSBinding {
         var worldGenContextField = getField(chunkMap.getClass(), WorldGenContext.class);
         worldGenContextField.setAccessible(true);
         var worldGenContext = (WorldGenContext) worldGenContextField.get(chunkMap);
+        var dimensionType = chunkMap.level.dimensionTypeRegistration().unwrapKey().orElse(null);
+        if (dimensionType != null && !dimensionType.location().getNamespace().equals("iris"))
+            Iris.error("Loaded world %s with invalid dimension type! (%s)", world.getName(), dimensionType.location().toString());
 
         var newContext = new WorldGenContext(
                 worldGenContext.level(), new IrisChunkGenerator(worldGenContext.generator(), seed, engine, world),
@@ -657,4 +669,98 @@ public class NMSBinding implements INMSBinding {
 
         return keys;
     }
+
+    @Override
+    public AutoClosing injectLevelStems() {
+        return inject(this::supplier);
+    }
+
+    @Override
+    @SneakyThrows
+    public com.volmit.iris.core.nms.container.Pair<Integer, AutoClosing> injectUncached(boolean overworld, boolean nether, boolean end) {
+        var reg = registry();
+        var field = getField(RegistryAccess.ImmutableRegistryAccess.class, Map.class);
+        field.setAccessible(true);
+
+        AutoClosing closing = inject(old -> new WorldLoader.DataLoadContext(
+                        old.resources(),
+                        old.dataConfiguration(),
+                        old.datapackWorldgen(),
+                        createRegistryAccess(old.datapackDimensions(), true, overworld, nether, end)
+                )
+        );
+
+        var injected = ((CraftServer) Bukkit.getServer()).getServer().worldLoader.datapackDimensions().registryOrThrow(Registries.LEVEL_STEM);
+        var old = (Map<ResourceKey<? extends Registry<?>>, Registry<?>>) field.get(reg);
+        var fake = new HashMap<>(old);
+        fake.put(Registries.LEVEL_STEM, injected);
+        field.set(reg, fake);
+
+        return new com.volmit.iris.core.nms.container.Pair<>(
+                injected.size(),
+                new AutoClosing(() -> {
+                    closing.close();
+                    field.set(reg, old);
+                }));
+    }
+
+    private WorldLoader.DataLoadContext supplier(WorldLoader.DataLoadContext old) {
+        return dataLoadContext.aquire(() -> new WorldLoader.DataLoadContext(
+                old.resources(),
+                old.dataConfiguration(),
+                old.datapackWorldgen(),
+                createRegistryAccess(old.datapackDimensions(), false, true, true, true)
+        ));
+    }
+
+    @SneakyThrows
+    private AutoClosing inject(Function<WorldLoader.DataLoadContext, WorldLoader.DataLoadContext> transformer) {
+        if (!dataContextLock.tryLock()) throw new IllegalStateException("Failed to inject data context!");
+
+        var server = ((CraftServer) Bukkit.getServer());
+        var field = getField(MinecraftServer.class, WorldLoader.DataLoadContext.class);
+        var nmsServer = server.getServer();
+        var old = nmsServer.worldLoader;
+
+        field.setAccessible(true);
+        field.set(nmsServer, transformer.apply(old));
+
+        return new AutoClosing(() -> {
+            field.set(nmsServer, old);
+            dataContextLock.unlock();
+        });
+    }
+
+    private RegistryAccess.Frozen createRegistryAccess(RegistryAccess.Frozen datapack, boolean copy, boolean overworld, boolean nether, boolean end) {
+        var access = registry();
+        var dimensions = access.registryOrThrow(Registries.DIMENSION_TYPE);
+        var levelStems = access.registryOrThrow(Registries.LEVEL_STEM);
+
+        var fake = new MappedRegistry<>(Registries.LEVEL_STEM, Lifecycle.experimental());
+        if (overworld) register(fake, levelStems, dimensions, LevelStem.OVERWORLD);
+        if (nether) register(fake, levelStems, dimensions, LevelStem.NETHER);
+        if (end) register(fake, levelStems, dimensions, LevelStem.END);
+        copy(fake, datapack.registry(Registries.LEVEL_STEM).orElse(null));
+
+        if (copy) copy(fake, levelStems);
+
+        return new RegistryAccess.Frozen.ImmutableRegistryAccess(List.of(fake.freeze())).freeze();
+    }
+
+    private void register(MappedRegistry<LevelStem> target, Registry<LevelStem> levelStems, Registry<DimensionType> dimensions, ResourceKey<LevelStem> key) {
+        target.register(key, new LevelStem(
+                dimensions.getHolder(ResourceLocation.fromNamespaceAndPath("iris", key.location().getPath())).orElseThrow(),
+                levelStems.getOrThrow(key).generator()
+        ), RegistrationInfo.BUILT_IN);
+    }
+
+    private void copy(MappedRegistry<LevelStem> target, Registry<LevelStem> source) {
+        if (source == null) return;
+        source.registryKeySet().forEach(key -> {
+            var value = source.get(key);
+            var info = source.registrationInfo(key).orElse(null);
+            if (value != null && info != null && !target.containsKey(key))
+                target.register(key, value, info);
+        });
+    }
 }

nms/v1_21_R2/src/main/java/com/volmit/iris/core/nms/v1_21_R2/NMSBinding.java

@@ -6,15 +6,23 @@ import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.util.*;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.locks.ReentrantLock;
+import java.util.function.Function;
 
+import com.mojang.serialization.Lifecycle;
+import com.volmit.iris.core.nms.container.AutoClosing;
 import com.volmit.iris.core.nms.container.BiomeColor;
+import com.volmit.iris.core.nms.container.Pair;
 import com.volmit.iris.core.nms.datapack.DataVersion;
 import com.volmit.iris.util.scheduling.J;
+import lombok.SneakyThrows;
 import net.minecraft.core.*;
 import net.minecraft.core.Registry;
 import net.minecraft.core.component.DataComponents;
 import net.minecraft.nbt.*;
 import net.minecraft.nbt.Tag;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.WorldLoader;
 import net.minecraft.server.commands.data.BlockDataAccessor;
 import net.minecraft.tags.TagKey;
 import net.minecraft.world.item.component.CustomData;
@@ -22,6 +30,8 @@ import net.minecraft.world.level.LevelReader;
 import net.minecraft.world.level.block.EntityBlock;
 import net.minecraft.world.level.chunk.status.ChunkStatus;
 import net.minecraft.world.level.chunk.status.WorldGenContext;
+import net.minecraft.world.level.dimension.DimensionType;
+import net.minecraft.world.level.dimension.LevelStem;
 import org.bukkit.*;
 import org.bukkit.block.Biome;
 import org.bukkit.block.data.BlockData;
@@ -72,9 +82,11 @@ public class NMSBinding implements INMSBinding {
     private final KMap<Biome, Object> baseBiomeCache = new KMap<>();
     private final BlockData AIR = Material.AIR.createBlockData();
     private final AtomicCache<MCAIdMap<net.minecraft.world.level.biome.Biome>> biomeMapCache = new AtomicCache<>();
+    private final AtomicCache<WorldLoader.DataLoadContext> dataLoadContext = new AtomicCache<>();
     private final AtomicCache<MCAIdMapper<BlockState>> registryCache = new AtomicCache<>();
     private final AtomicCache<MCAPalette<BlockState>> globalCache = new AtomicCache<>();
     private final AtomicCache<RegistryAccess> registryAccess = new AtomicCache<>();
+    private final ReentrantLock dataContextLock = new ReentrantLock(true);
     private final AtomicCache<Method> byIdRef = new AtomicCache<>();
     private Field biomeStorageCache = null;
 
@@ -202,7 +214,7 @@ public class NMSBinding implements INMSBinding {
                     .newBlockEntity(blockPos, state);
         }
         var accessor = new BlockDataAccessor(blockEntity, blockPos);
-        accessor.setData(tag.merge(accessor.getData()));
+        accessor.setData(accessor.getData().merge(tag));
     }
 
     private Tag convertToTag(Object object, int depth, int maxDepth) {
@@ -533,6 +545,9 @@ public class NMSBinding implements INMSBinding {
         var worldGenContextField = getField(chunkMap.getClass(), WorldGenContext.class);
         worldGenContextField.setAccessible(true);
         var worldGenContext = (WorldGenContext) worldGenContextField.get(chunkMap);
+        var dimensionType = chunkMap.level.dimensionTypeRegistration().unwrapKey().orElse(null);
+        if (dimensionType != null && !dimensionType.location().getNamespace().equals("iris"))
+            Iris.error("Loaded world %s with invalid dimension type! (%s)", world.getName(), dimensionType.location().toString());
 
         var newContext = new WorldGenContext(
                 worldGenContext.level(), new IrisChunkGenerator(worldGenContext.generator(), seed, engine, world),
@@ -644,4 +659,98 @@ public class NMSBinding implements INMSBinding {
 
         return keys;
     }
+
+    @Override
+    public AutoClosing injectLevelStems() {
+        return inject(this::supplier);
+    }
+
+    @Override
+    @SneakyThrows
+    public Pair<Integer, AutoClosing> injectUncached(boolean overworld, boolean nether, boolean end) {
+        var reg = registry();
+        var field = getField(RegistryAccess.ImmutableRegistryAccess.class, Map.class);
+        field.setAccessible(true);
+
+        AutoClosing closing = inject(old -> new WorldLoader.DataLoadContext(
+                        old.resources(),
+                        old.dataConfiguration(),
+                        old.datapackWorldgen(),
+                        createRegistryAccess(old.datapackDimensions(), true, overworld, nether, end)
+                )
+        );
+
+        var injected = ((CraftServer) Bukkit.getServer()).getServer().worldLoader.datapackDimensions().lookupOrThrow(Registries.LEVEL_STEM);
+        var old = (Map<ResourceKey<? extends Registry<?>>, Registry<?>>) field.get(reg);
+        var fake = new HashMap<>(old);
+        fake.put(Registries.LEVEL_STEM, injected);
+        field.set(reg, fake);
+
+        return new Pair<>(
+                injected.size(),
+                new AutoClosing(() -> {
+                    closing.close();
+                    field.set(reg, old);
+                }));
+    }
+
+    private WorldLoader.DataLoadContext supplier(WorldLoader.DataLoadContext old) {
+        return dataLoadContext.aquire(() -> new WorldLoader.DataLoadContext(
+                old.resources(),
+                old.dataConfiguration(),
+                old.datapackWorldgen(),
+                createRegistryAccess(old.datapackDimensions(), false, true, true, true)
+        ));
+    }
+
+    @SneakyThrows
+    private AutoClosing inject(Function<WorldLoader.DataLoadContext, WorldLoader.DataLoadContext> transformer) {
+        if (!dataContextLock.tryLock()) throw new IllegalStateException("Failed to inject data context!");
+
+        var server = ((CraftServer) Bukkit.getServer());
+        var field = getField(MinecraftServer.class, WorldLoader.DataLoadContext.class);
+        var nmsServer = server.getServer();
+        var old = nmsServer.worldLoader;
+
+        field.setAccessible(true);
+        field.set(nmsServer, transformer.apply(old));
+
+        return new AutoClosing(() -> {
+            field.set(nmsServer, old);
+            dataContextLock.unlock();
+        });
+    }
+
+    private RegistryAccess.Frozen createRegistryAccess(RegistryAccess.Frozen datapack, boolean copy, boolean overworld, boolean nether, boolean end) {
+        var access = registry();
+        var dimensions = access.lookupOrThrow(Registries.DIMENSION_TYPE);
+        var levelStems = access.lookupOrThrow(Registries.LEVEL_STEM);
+
+        var fake = new MappedRegistry<>(Registries.LEVEL_STEM, Lifecycle.experimental());
+        if (overworld) register(fake, levelStems, dimensions, LevelStem.OVERWORLD);
+        if (nether) register(fake, levelStems, dimensions, LevelStem.NETHER);
+        if (end) register(fake, levelStems, dimensions, LevelStem.END);
+        copy(fake, datapack.lookup(Registries.LEVEL_STEM).orElse(null));
+
+        if (copy) copy(fake, levelStems);
+
+        return new RegistryAccess.Frozen.ImmutableRegistryAccess(List.of(fake.freeze())).freeze();
+    }
+
+    private void register(MappedRegistry<LevelStem> target, Registry<LevelStem> levelStems, Registry<DimensionType> dimensions, ResourceKey<LevelStem> key) {
+        target.register(key, new LevelStem(
+                dimensions.get(ResourceLocation.fromNamespaceAndPath("iris", key.location().getPath())).orElseThrow(),
+                levelStems.getValueOrThrow(key).generator()
+        ), RegistrationInfo.BUILT_IN);
+    }
+
+    private void copy(MappedRegistry<LevelStem> target, Registry<LevelStem> source) {
+        if (source == null) return;
+        source.listElementIds().forEach(key -> {
+            var value = source.getValue(key);
+            var info = source.registrationInfo(key).orElse(null);
+            if (value != null && info != null && !target.containsKey(key))
+                target.register(key, value, info);
+        });
+    }
 }

nms/v1_21_R3/src/main/java/com/volmit/iris/core/nms/v1_21_R3/NMSBinding.java

@@ -1,9 +1,12 @@
 package com.volmit.iris.core.nms.v1_21_R3;
 
 import com.mojang.brigadier.exceptions.CommandSyntaxException;
+import com.mojang.serialization.Lifecycle;
 import com.volmit.iris.Iris;
 import com.volmit.iris.core.nms.INMSBinding;
+import com.volmit.iris.core.nms.container.AutoClosing;
 import com.volmit.iris.core.nms.container.BiomeColor;
+import com.volmit.iris.core.nms.container.Pair;
 import com.volmit.iris.core.nms.datapack.DataVersion;
 import com.volmit.iris.engine.data.cache.AtomicCache;
 import com.volmit.iris.engine.framework.Engine;
@@ -19,6 +22,7 @@ import com.volmit.iris.util.nbt.mca.palette.*;
 import com.volmit.iris.util.nbt.tag.CompoundTag;
 import com.volmit.iris.util.scheduling.J;
 import it.unimi.dsi.fastutil.objects.Object2IntMap;
+import lombok.SneakyThrows;
 import net.minecraft.core.Registry;
 import net.minecraft.core.*;
 import net.minecraft.core.component.DataComponents;
@@ -27,6 +31,8 @@ import net.minecraft.nbt.Tag;
 import net.minecraft.nbt.*;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.resources.ResourceLocation;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.WorldLoader;
 import net.minecraft.server.commands.data.BlockDataAccessor;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.tags.TagKey;
@@ -41,6 +47,8 @@ import net.minecraft.world.level.chunk.ChunkAccess;
 import net.minecraft.world.level.chunk.LevelChunk;
 import net.minecraft.world.level.chunk.status.ChunkStatus;
 import net.minecraft.world.level.chunk.status.WorldGenContext;
+import net.minecraft.world.level.dimension.DimensionType;
+import net.minecraft.world.level.dimension.LevelStem;
 import org.bukkit.*;
 import org.bukkit.block.Biome;
 import org.bukkit.block.data.BlockData;
@@ -66,14 +74,18 @@ import java.lang.reflect.Modifier;
 import java.util.List;
 import java.util.*;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.locks.ReentrantLock;
+import java.util.function.Function;
 
 public class NMSBinding implements INMSBinding {
     private final KMap<Biome, Object> baseBiomeCache = new KMap<>();
     private final BlockData AIR = Material.AIR.createBlockData();
     private final AtomicCache<MCAIdMap<net.minecraft.world.level.biome.Biome>> biomeMapCache = new AtomicCache<>();
+    private final AtomicCache<WorldLoader.DataLoadContext> dataLoadContext = new AtomicCache<>();
     private final AtomicCache<MCAIdMapper<BlockState>> registryCache = new AtomicCache<>();
     private final AtomicCache<MCAPalette<BlockState>> globalCache = new AtomicCache<>();
     private final AtomicCache<RegistryAccess> registryAccess = new AtomicCache<>();
+    private final ReentrantLock dataContextLock = new ReentrantLock(true);
     private final AtomicCache<Method> byIdRef = new AtomicCache<>();
     private Field biomeStorageCache = null;
 
@@ -201,7 +213,7 @@ public class NMSBinding implements INMSBinding {
                     .newBlockEntity(blockPos, state);
         }
         var accessor = new BlockDataAccessor(blockEntity, blockPos);
-        accessor.setData(tag.merge(accessor.getData()));
+        accessor.setData(accessor.getData().merge(tag));
     }
 
     private Tag convertToTag(Object object, int depth, int maxDepth) {
@@ -532,6 +544,9 @@ public class NMSBinding implements INMSBinding {
         var worldGenContextField = getField(chunkMap.getClass(), WorldGenContext.class);
         worldGenContextField.setAccessible(true);
         var worldGenContext = (WorldGenContext) worldGenContextField.get(chunkMap);
+        var dimensionType = chunkMap.level.dimensionTypeRegistration().unwrapKey().orElse(null);
+        if (dimensionType != null && !dimensionType.location().getNamespace().equals("iris"))
+            Iris.error("Loaded world %s with invalid dimension type! (%s)", world.getName(), dimensionType.location().toString());
 
         var newContext = new WorldGenContext(
                 worldGenContext.level(), new IrisChunkGenerator(worldGenContext.generator(), seed, engine, world),
@@ -643,4 +658,98 @@ public class NMSBinding implements INMSBinding {
 
         return keys;
     }
+
+    @Override
+    public AutoClosing injectLevelStems() {
+        return inject(this::supplier);
+    }
+
+    @Override
+    @SneakyThrows
+    public Pair<Integer, AutoClosing> injectUncached(boolean overworld, boolean nether, boolean end) {
+        var reg = registry();
+        var field = getField(RegistryAccess.ImmutableRegistryAccess.class, Map.class);
+        field.setAccessible(true);
+
+        AutoClosing closing = inject(old -> new WorldLoader.DataLoadContext(
+                    old.resources(),
+                    old.dataConfiguration(),
+                    old.datapackWorldgen(),
+                    createRegistryAccess(old.datapackDimensions(), true, overworld, nether, end)
+                )
+        );
+
+        var injected = ((CraftServer) Bukkit.getServer()).getServer().worldLoader.datapackDimensions().lookupOrThrow(Registries.LEVEL_STEM);
+        var old = (Map<ResourceKey<? extends Registry<?>>, Registry<?>>) field.get(reg);
+        var fake = new HashMap<>(old);
+        fake.put(Registries.LEVEL_STEM, injected);
+        field.set(reg, fake);
+
+        return new Pair<>(
+                injected.size(),
+                new AutoClosing(() -> {
+                    closing.close();
+                    field.set(reg, old);
+                }));
+    }
+
+    private WorldLoader.DataLoadContext supplier(WorldLoader.DataLoadContext old) {
+        return dataLoadContext.aquire(() -> new WorldLoader.DataLoadContext(
+                old.resources(),
+                old.dataConfiguration(),
+                old.datapackWorldgen(),
+                createRegistryAccess(old.datapackDimensions(), false, true, true, true)
+        ));
+    }
+
+    @SneakyThrows
+    private AutoClosing inject(Function<WorldLoader.DataLoadContext, WorldLoader.DataLoadContext> transformer) {
+        if (!dataContextLock.tryLock()) throw new IllegalStateException("Failed to inject data context!");
+
+        var server = ((CraftServer) Bukkit.getServer());
+        var field = getField(MinecraftServer.class, WorldLoader.DataLoadContext.class);
+        var nmsServer = server.getServer();
+        var old = nmsServer.worldLoader;
+
+        field.setAccessible(true);
+        field.set(nmsServer, transformer.apply(old));
+
+        return new AutoClosing(() -> {
+            field.set(nmsServer, old);
+            dataContextLock.unlock();
+        });
+    }
+
+    private RegistryAccess.Frozen createRegistryAccess(RegistryAccess.Frozen datapack, boolean copy, boolean overworld, boolean nether, boolean end) {
+        var access = registry();
+        var dimensions = access.lookupOrThrow(Registries.DIMENSION_TYPE);
+        var levelStems = access.lookupOrThrow(Registries.LEVEL_STEM);
+
+        var fake = new MappedRegistry<>(Registries.LEVEL_STEM, Lifecycle.experimental());
+        if (overworld) register(fake, levelStems, dimensions, LevelStem.OVERWORLD);
+        if (nether) register(fake, levelStems, dimensions, LevelStem.NETHER);
+        if (end) register(fake, levelStems, dimensions, LevelStem.END);
+        copy(fake, datapack.lookup(Registries.LEVEL_STEM).orElse(null));
+
+        if (copy) copy(fake, levelStems);
+
+        return new RegistryAccess.Frozen.ImmutableRegistryAccess(List.of(fake.freeze())).freeze();
+    }
+
+    private void register(MappedRegistry<LevelStem> target, Registry<LevelStem> levelStems, Registry<DimensionType> dimensions, ResourceKey<LevelStem> key) {
+        target.register(key, new LevelStem(
+                dimensions.get(ResourceLocation.fromNamespaceAndPath("iris", key.location().getPath())).orElseThrow(),
+                levelStems.getValueOrThrow(key).generator()
+        ), RegistrationInfo.BUILT_IN);
+    }
+
+    private void copy(MappedRegistry<LevelStem> target, Registry<LevelStem> source) {
+        if (source == null) return;
+        source.listElementIds().forEach(key -> {
+            var value = source.getValue(key);
+            var info = source.registrationInfo(key).orElse(null);
+            if (value != null && info != null && !target.containsKey(key))
+                target.register(key, value, info);
+        });
+    }
 }

settings.gradle

@@ -37,7 +37,4 @@ include(
         ':nms:v1_20_R3',
         ':nms:v1_20_R2',
         ':nms:v1_20_R1',
-        ':nms:v1_19_R3',
-        ':nms:v1_19_R2',
-        ':nms:v1_19_R1'
 )