api/src/main/java/lol/pyr/znpcsplus/api/entity/PropertyHolder.java

@@ -43,14 +43,6 @@ public interface PropertyHolder {
      */
     void setItemProperty(EntityProperty<?> key, ItemStack value);
 
-    /**
-     * Weird fix which is sadly required in order to not decrease performance
-     * when using item properties, read https://github.com/Pyrbu/ZNPCsPlus/pull/129#issuecomment-1948777764
-     *
-     * @param key Unique key representing a property
-     */
-    ItemStack getItemProperty(EntityProperty<?> key);
-
     /**
      * Method used to get a set of all of the property keys that this holder has a value for
      *

api/src/main/java/lol/pyr/znpcsplus/api/hologram/Hologram.java

@@ -41,16 +41,4 @@ public interface Hologram {
      * @return The number of lines in the hologram
      */
     int lineCount();
-
-    /**
-     * Gets the refresh delay of the hologram
-     * @return The refresh delay of the hologram
-     */
-    long getRefreshDelay();
-
-    /**
-     * Sets the refresh delay of the hologram
-     * @param delay The delay to set
-     */
-    void setRefreshDelay(long delay);
 }

api/src/main/java/lol/pyr/znpcsplus/util/ArmadilloState.java

@@ -1,8 +0,0 @@
-package lol.pyr.znpcsplus.util;
-
-public enum ArmadilloState {
-    IDLE,
-    ROLLING,
-    SCARED,
-    UNROLLING
-}

api/src/main/java/lol/pyr/znpcsplus/util/WoldVariant.java

@@ -1,23 +0,0 @@
-package lol.pyr.znpcsplus.util;
-
-public enum WoldVariant {
-    PALE(3),
-    SPOTTED(6),
-    SNOWY(5),
-    BLACK(1),
-    ASHEN(0),
-    RUSTY(4),
-    WOODS(8),
-    CHESTNUT(2),
-    STRIPED(7);
-
-    private final int id;
-
-    WoldVariant(int id) {
-        this.id = id;
-    }
-
-    public int getId() {
-        return id;
-    }
-}

plugin/build.gradle

@@ -6,9 +6,9 @@ plugins {
 
 runServer {
     javaLauncher = javaToolchains.launcherFor {
-        languageVersion = JavaLanguageVersion.of(21)
+        languageVersion = JavaLanguageVersion.of(17)
     }
-    minecraftVersion "1.20.6"
+    minecraftVersion "1.20.4"
 }
 
 processResources {
@@ -32,17 +32,18 @@ publishing {
 
 dependencies {
     compileOnly "me.clip:placeholderapi:2.11.5" // Placeholder support
-    implementation "com.google.code.gson:gson:2.10.1" // JSON parsing
-    implementation "org.bstats:bstats-bukkit:3.0.2" // Plugin stats
-    implementation "me.robertlit:SpigotResourcesAPI:2.0" // Spigot API wrapper for update checker
-    implementation "com.github.retrooper.packetevents:spigot:2.3.0" // Packets
-    implementation "space.arim.dazzleconf:dazzleconf-ext-snakeyaml:1.2.1" // Configs
-    implementation "lol.pyr:director-adventure:2.1.1" // Commands
+    compileOnly "com.google.code.gson:gson:2.10.1" // JSON parsing
+    compileOnly "org.bstats:bstats-bukkit:3.0.2" // Plugin stats
+    compileOnly "me.robertlit:SpigotResourcesAPI:2.0" // Spigot API wrapper for update checker
+    compileOnly "com.github.retrooper.packetevents:spigot:2.3.0" // Packets
+    compileOnly "space.arim.dazzleconf:dazzleconf-ext-snakeyaml:1.2.1" // Configs
+    compileOnly "lol.pyr:director-adventure:2.1.1" // Commands
 
     // Fancy text library
-    implementation "net.kyori:adventure-platform-bukkit:4.3.2"
-    implementation "net.kyori:adventure-text-minimessage:4.15.0"
+    compileOnly "net.kyori:adventure-platform-bukkit:4.3.2"
+    compileOnly "net.kyori:adventure-text-minimessage:4.15.0"
 
+    implementation "me.lucko:jar-relocator:1.7"
     implementation project(":api")
 }
 

plugin/src/main/java/lol/pyr/znpcsplus/ZNpcsPlus.java

@@ -115,7 +115,7 @@ public class ZNpcsPlus {
         MojangSkinCache skinCache = new MojangSkinCache(configManager);
         EntityPropertyRegistryImpl propertyRegistry = new EntityPropertyRegistryImpl(skinCache, configManager);
         PacketFactory packetFactory = setupPacketFactory(scheduler, propertyRegistry, configManager);
-        propertyRegistry.registerTypes(bootstrap, packetFactory, textSerializer);
+        propertyRegistry.registerTypes(packetFactory, textSerializer);
 
         ActionRegistry actionRegistry = new ActionRegistry();
         NpcTypeRegistryImpl typeRegistry = new NpcTypeRegistryImpl();
@@ -131,7 +131,7 @@ public class ZNpcsPlus {
                 scheduler, packetFactory, textSerializer, typeRegistry, getDataFolder().getParentFile(),
                 propertyRegistry, skinCache, npcRegistry, bungeeConnector);
 
-        log(ChatColor.WHITE + " * Registering components...");
+        log(ChatColor.WHITE + " * Registerring components...");
 
         bungeeConnector.registerChannel();
         shutdownTasks.add(bungeeConnector::unregisterChannel);
@@ -276,13 +276,10 @@ public class ZNpcsPlus {
         registerEnumParser(manager, RabbitType.class, incorrectUsageMessage);
         registerEnumParser(manager, AttachDirection.class, incorrectUsageMessage);
         registerEnumParser(manager, Sound.class, incorrectUsageMessage);
-        registerEnumParser(manager, ArmadilloState.class, incorrectUsageMessage);
-        registerEnumParser(manager, WoldVariant.class, incorrectUsageMessage);
 
         manager.registerCommand("npc", new MultiCommand(bootstrap.loadHelpMessage("root"))
                 .addSubcommand("center", new CenterCommand(npcRegistry))
                 .addSubcommand("create", new CreateCommand(npcRegistry, typeRegistry))
-                .addSubcommand("clone", new CloneCommand(npcRegistry))
                 .addSubcommand("reloadconfig", new ReloadConfigCommand(configManager))
                 .addSubcommand("toggle", new ToggleCommand(npcRegistry))
                 .addSubcommand("skin", new SkinCommand(skinCache, npcRegistry, typeRegistry, propertyRegistry))

plugin/src/main/java/lol/pyr/znpcsplus/ZNpcsPlusBootstrap.java

@@ -2,6 +2,7 @@ package lol.pyr.znpcsplus;
 
 import lol.pyr.director.adventure.command.CommandContext;
 import lol.pyr.director.common.message.Message;
+import lol.pyr.znpcsplus.libraries.LibraryLoader;
 import lol.pyr.znpcsplus.util.FileUtil;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.minimessage.MiniMessage;
@@ -31,6 +32,55 @@ public class ZNpcsPlusBootstrap extends JavaPlugin {
             Bukkit.getPluginManager().disablePlugin(this);
             return;
         }
+        getLogger().info("Downloading and loading libraries, this might take a while if this is the first time you're launching the plugin");
+        LibraryLoader loader = new LibraryLoader(this, new File(getDataFolder(), "libraries"));
+
+        loader.addRelocation(decrypt("org..bstats"), "lol.pyr.znpcsplus.libraries.bstats");
+        loader.addRelocation(decrypt("me..robertlit..spigotresources"), "lol.pyr.znpcsplus.libraries.spigotresources");
+        loader.addRelocation(decrypt("net..kyori"), "lol.pyr.znpcsplus.libraries.kyori");
+        loader.addRelocation(decrypt("org..checkerframework"), "lol.pyr.znpcsplus.libraries.checkerframework");
+        loader.addRelocation(decrypt("com..google"), "lol.pyr.znpcsplus.libraries.google");
+        loader.addRelocation(decrypt("com..github..retrooper..packetevents"), "lol.pyr.znpcsplus.libraries.packetevents.api");
+        loader.addRelocation(decrypt("io..github..retrooper..packetevents"), "lol.pyr.znpcsplus.libraries.packetevents.impl");
+        loader.addRelocation(decrypt("org..yaml..snakeyaml"), "lol.pyr.znpcsplus.libraries.snakeyaml");
+        loader.addRelocation(decrypt("space..arim..dazzleconf"), "lol.pyr.znpcsplus.libraries.dazzleconf");
+        loader.addRelocation(decrypt("lol..pyr..director"), "lol.pyr.znpcsplus.libraries.command");
+
+        loader.loadLibrary(decrypt("com..google..guava"), "guava", "18.0");
+        loader.loadLibrary(decrypt("com..google..code..gson"), "gson", "2.10.1");
+
+        loader.loadLibrary(decrypt("org..bstats"), "bstats-base", "3.0.2");
+        loader.loadLibrary(decrypt("org..bstats"), "bstats-bukkit", "3.0.2");
+
+        loader.loadLibrary("me.robertlit", "SpigotResourcesAPI", "2.0", "https://repo.pyr.lol/releases");
+
+        loader.loadLibrary(decrypt("com..github..retrooper..packetevents"), "api", "2.3.0", "https://repo.codemc.io/repository/maven-releases/");
+        loader.loadLibrary(decrypt("com..github..retrooper..packetevents"), "spigot", "2.3.0", "https://repo.codemc.io/repository/maven-releases/");
+
+        loader.loadLibrary(decrypt("space..arim..dazzleconf"), "dazzleconf-core", "1.2.1");
+        loader.loadLibrary(decrypt("space..arim..dazzleconf"), "dazzleconf-ext-snakeyaml", "1.2.1");
+        loader.loadLibrary("org.yaml", "snakeyaml", "1.33");
+
+        loader.loadLibrary("lol.pyr", "director-adventure", "2.1.1", "https://repo.pyr.lol/releases");
+
+        loader.loadLibrary(decrypt("net..kyori"), "adventure-api", "4.15.0");
+        loader.loadLibrary(decrypt("net..kyori"), "adventure-key", "4.15.0");
+        loader.loadLibrary(decrypt("net..kyori"), "adventure-nbt", "4.15.0");
+        loader.loadLibrary(decrypt("net..kyori"), "adventure-platform-facet", "4.3.2");
+        loader.loadLibrary(decrypt("net..kyori"), "adventure-platform-api", "4.3.2");
+        loader.loadLibrary(decrypt("net..kyori"), "adventure-platform-bukkit", "4.3.2");
+        loader.loadLibrary(decrypt("net..kyori"), "adventure-text-minimessage", "4.15.0");
+        loader.loadLibrary(decrypt("net..kyori"), "adventure-text-serializer-bungeecord", "4.3.2");
+        loader.loadLibrary(decrypt("net..kyori"), "adventure-text-serializer-gson", "4.15.0");
+        loader.loadLibrary(decrypt("net..kyori"), "adventure-text-serializer-gson-legacy-impl", "4.15.0");
+        loader.loadLibrary(decrypt("net..kyori"), "adventure-text-serializer-json", "4.15.0");
+        loader.loadLibrary(decrypt("net..kyori"), "adventure-text-serializer-json-legacy-impl", "4.15.0");
+        loader.loadLibrary(decrypt("net..kyori"), "adventure-text-serializer-legacy", "4.15.0");
+        loader.loadLibrary(decrypt("net..kyori"), "examination-api", "1.3.0");
+        loader.loadLibrary(decrypt("net..kyori"), "examination-string", "1.3.0");
+        loader.deleteUnloadedLibraries();
+
+        getLogger().info("Loaded " + loader.loadedLibraryCount() + " libraries!");
         zNpcsPlus = new ZNpcsPlus(this);
     }
 
@@ -70,4 +120,9 @@ public class ZNpcsPlusBootstrap extends JavaPlugin {
     public boolean movedLegacy() {
         return legacy;
     }
+
+    // Ugly hack because of https://github.com/johnrengelman/shadow/issues/232
+    private static String decrypt(String packageName) {
+        return packageName.replace("..", ".");
+    }
 }

plugin/src/main/java/lol/pyr/znpcsplus/commands/CloneCommand.java

@@ -1,44 +0,0 @@
-package lol.pyr.znpcsplus.commands;
-
-import lol.pyr.director.adventure.command.CommandContext;
-import lol.pyr.director.adventure.command.CommandHandler;
-import lol.pyr.director.common.command.CommandExecutionException;
-import lol.pyr.znpcsplus.npc.NpcEntryImpl;
-import lol.pyr.znpcsplus.npc.NpcRegistryImpl;
-import lol.pyr.znpcsplus.npc.NpcTypeRegistryImpl;
-import lol.pyr.znpcsplus.util.NpcLocation;
-import net.kyori.adventure.text.Component;
-import net.kyori.adventure.text.format.NamedTextColor;
-import org.bukkit.entity.Player;
-
-import java.util.Collections;
-import java.util.List;
-
-public class CloneCommand implements CommandHandler {
-    private final NpcRegistryImpl npcRegistry;
-
-    public CloneCommand(NpcRegistryImpl npcRegistry) {
-        this.npcRegistry = npcRegistry;
-    }
-
-    @Override
-    public void run(CommandContext context) throws  CommandExecutionException {
-        context.setUsage(context.getLabel() + " clone <id> <new id>");
-        Player player = context.ensureSenderIsPlayer();
-
-        String id = context.popString();
-        if (npcRegistry.getById(id) == null) context.halt(Component.text("NPC with ID " + id + " does not exist.", NamedTextColor.RED));
-        String newId = context.popString();
-        if (npcRegistry.getById(newId) != null) context.halt(Component.text("NPC with ID " + newId + " already exists.", NamedTextColor.RED));
-
-        npcRegistry.clone(id, newId, player.getWorld(), new NpcLocation(player.getLocation()));
-
-        context.send(Component.text("Cloned NPC with ID " + id + " to ID " + newId + ".", NamedTextColor.GREEN));
-    }
-
-    @Override
-    public List<String> suggest(CommandContext context) throws CommandExecutionException {
-        if (context.argSize() == 1) return context.suggestCollection(npcRegistry.getModifiableIds());
-        return Collections.emptyList();
-    }
-}

plugin/src/main/java/lol/pyr/znpcsplus/commands/MoveCommand.java

@@ -13,7 +13,6 @@ import org.bukkit.entity.Player;
 
 import java.util.Collections;
 import java.util.List;
-import java.util.Objects;
 
 public class MoveCommand implements CommandHandler {
     private final NpcRegistryImpl npcRegistry;
@@ -28,7 +27,7 @@ public class MoveCommand implements CommandHandler {
         Player player = context.ensureSenderIsPlayer();
         NpcImpl npc = context.parse(NpcEntryImpl.class).getNpc();
         npc.setLocation(new NpcLocation(player.getLocation()));
-        if (!Objects.equals(npc.getWorld(), player.getWorld())) npc.setWorld(player.getWorld());
+        if (!npc.getWorld().equals(player.getWorld())) npc.setWorld(player.getWorld());
         context.send(Component.text("NPC moved to your current location.", NamedTextColor.GREEN));
     }
 

plugin/src/main/java/lol/pyr/znpcsplus/commands/NearCommand.java

@@ -10,11 +10,9 @@ import lol.pyr.znpcsplus.util.NpcLocation;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.event.ClickEvent;
 import net.kyori.adventure.text.format.NamedTextColor;
-import org.bukkit.Location;
 import org.bukkit.entity.Player;
 
 import java.util.List;
-import java.util.Objects;
 import java.util.stream.Collectors;
 
 public class NearCommand implements CommandHandler {
@@ -32,11 +30,8 @@ public class NearCommand implements CommandHandler {
         double radius = Math.pow(raw, 2);
 
         List<NpcEntryImpl> entries = npcRegistry.getAllModifiable().stream()
-                .filter(entry -> Objects.equals(entry.getNpc().getWorld(), player.getWorld()))
-                .filter(entry -> {
-                    Location loc = entry.getNpc().getBukkitLocation();
-                    return loc != null && loc.distanceSquared(player.getLocation()) < radius;
-                })
+                .filter(entry -> entry.getNpc().getWorld().equals(player.getWorld()))
+                .filter(entry -> entry.getNpc().getBukkitLocation().distanceSquared(player.getLocation()) < radius)
                 .collect(Collectors.toList());
 
         if (entries.isEmpty()) context.halt(Component.text("There are no npcs within " + raw + " blocks around you.", NamedTextColor.RED));

plugin/src/main/java/lol/pyr/znpcsplus/commands/TeleportCommand.java

@@ -9,7 +9,6 @@ import lol.pyr.znpcsplus.npc.NpcRegistryImpl;
 import lol.pyr.znpcsplus.util.FoliaUtil;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.format.NamedTextColor;
-import org.bukkit.Location;
 import org.bukkit.entity.Player;
 
 import java.util.Collections;
@@ -27,9 +26,7 @@ public class TeleportCommand implements CommandHandler {
         context.setUsage(context.getLabel() + " teleport <id>");
         Player player = context.ensureSenderIsPlayer();
         NpcImpl npc = context.parse(NpcEntryImpl.class).getNpc();
-        Location location = npc.getBukkitLocation();
-        if (location == null) context.halt("Unable to teleport to NPC, the world is not loaded!");
-        FoliaUtil.teleport(player, location);
+        FoliaUtil.teleport(player, npc.getBukkitLocation());
         context.send(Component.text("Teleported to NPC!", NamedTextColor.GREEN));
     }
 

plugin/src/main/java/lol/pyr/znpcsplus/conversion/citizens/CitizensImporter.java

@@ -4,7 +4,6 @@ import lol.pyr.znpcsplus.config.ConfigManager;
 import lol.pyr.znpcsplus.conversion.DataImporter;
 import lol.pyr.znpcsplus.conversion.citizens.model.CitizensTrait;
 import lol.pyr.znpcsplus.conversion.citizens.model.CitizensTraitsRegistry;
-import lol.pyr.znpcsplus.conversion.citizens.model.traits.TypeTrait;
 import lol.pyr.znpcsplus.entity.EntityPropertyRegistryImpl;
 import lol.pyr.znpcsplus.npc.NpcEntryImpl;
 import lol.pyr.znpcsplus.npc.NpcImpl;
@@ -53,7 +52,7 @@ public class CitizensImporter implements DataImporter {
         this.propertyRegistry = propertyRegistry;
         this.skinCache = skinCache;
         this.dataFile = dataFile;
-        this.traitsRegistry = new CitizensTraitsRegistry(propertyRegistry, skinCache, taskScheduler, textSerializer);
+        this.traitsRegistry = new CitizensTraitsRegistry(typeRegistry, propertyRegistry, skinCache);
         this.npcRegistry = npcRegistry;
     }
 
@@ -82,12 +81,11 @@ public class CitizensImporter implements DataImporter {
                 world = Bukkit.getWorlds().get(0).getName();
             }
             NpcImpl npc = new NpcImpl(uuid, propertyRegistry, configManager, packetFactory, textSerializer, world, typeRegistry.getByName("armor_stand"), new NpcLocation(0, 0, 0, 0, 0));
+            npc.getType().applyDefaultProperties(npc);
 
+            npc.getHologram().addTextLineComponent(textSerializer.deserialize(name));
             ConfigurationSection traits = npcSection.getConfigurationSection("traits");
             if (traits != null) {
-                TypeTrait typeTrait = new TypeTrait(typeRegistry);
-                npc = typeTrait.apply(npc, traits.getString("type"));
-                npc.getType().applyDefaultProperties(npc);
                 for (String traitName : traits.getKeys(false)) {
                     Object trait = traits.get(traitName);
                     CitizensTrait citizensTrait = traitsRegistry.getByName(traitName);
@@ -96,10 +94,6 @@ public class CitizensImporter implements DataImporter {
                     }
                 }
             }
-            boolean nameVisible = Boolean.parseBoolean(npcSection.getString("metadata.name-visible", "true"));
-            if (nameVisible) {
-                npc.getHologram().addTextLineComponent(textSerializer.deserialize(name));
-            }
             String id = key.toLowerCase();
             while (npcRegistry.getById(id) != null) {
                 id += "_"; // TODO: make a backup of the old npc instead

plugin/src/main/java/lol/pyr/znpcsplus/conversion/citizens/model/CitizensTraitsRegistry.java

@@ -1,28 +1,24 @@
 package lol.pyr.znpcsplus.conversion.citizens.model;
 
 import lol.pyr.znpcsplus.api.entity.EntityPropertyRegistry;
+import lol.pyr.znpcsplus.api.npc.NpcTypeRegistry;
 import lol.pyr.znpcsplus.conversion.citizens.model.traits.*;
-import lol.pyr.znpcsplus.scheduling.TaskScheduler;
 import lol.pyr.znpcsplus.skin.cache.MojangSkinCache;
-import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
 
 import java.util.HashMap;
 
 public class CitizensTraitsRegistry {
     private final HashMap<String, CitizensTrait> traitMap = new HashMap<>();
 
-    public CitizensTraitsRegistry(EntityPropertyRegistry propertyRegistry, MojangSkinCache skinCache, TaskScheduler taskScheduler, LegacyComponentSerializer textSerializer) {
+    public CitizensTraitsRegistry(NpcTypeRegistry typeRegistry, EntityPropertyRegistry propertyRegistry, MojangSkinCache skinCache) {
         register(new LocationTrait());
+        register(new TypeTrait(typeRegistry));
         register(new ProfessionTrait(propertyRegistry));
         register(new VillagerTrait(propertyRegistry));
         register(new SkinTrait(propertyRegistry));
         register(new MirrorTrait(propertyRegistry, skinCache));
         register(new SkinLayersTrait(propertyRegistry));
         register(new LookTrait(propertyRegistry));
-        register(new CommandTrait(taskScheduler));
-        register(new HologramTrait(textSerializer));
-        register(new EquipmentTrait(propertyRegistry));
-        register(new SpawnedTrait());
     }
 
     public CitizensTrait getByName(String name) {

plugin/src/main/java/lol/pyr/znpcsplus/conversion/citizens/model/traits/CommandTrait.java

@@ -1,69 +0,0 @@
-package lol.pyr.znpcsplus.conversion.citizens.model.traits;
-
-import lol.pyr.znpcsplus.api.interaction.InteractionType;
-import lol.pyr.znpcsplus.conversion.citizens.model.SectionCitizensTrait;
-import lol.pyr.znpcsplus.interaction.InteractionActionImpl;
-import lol.pyr.znpcsplus.interaction.consolecommand.ConsoleCommandAction;
-import lol.pyr.znpcsplus.interaction.playercommand.PlayerCommandAction;
-import lol.pyr.znpcsplus.npc.NpcImpl;
-import lol.pyr.znpcsplus.scheduling.TaskScheduler;
-import org.bukkit.configuration.ConfigurationSection;
-import org.jetbrains.annotations.NotNull;
-
-import java.util.Set;
-
-public class CommandTrait extends SectionCitizensTrait {
-    private final TaskScheduler scheduler;
-
-    public CommandTrait(TaskScheduler scheduler) {
-        super("commandtrait");
-        this.scheduler = scheduler;
-    }
-
-    @Override
-    public @NotNull NpcImpl apply(NpcImpl npc, ConfigurationSection section) {
-        ConfigurationSection commands = section.getConfigurationSection("commands");
-        if (commands != null) {
-            Set<String> keys = commands.getKeys(false);
-            if (keys != null) {
-                for (String key : keys) {
-                    ConfigurationSection commandSection = commands.getConfigurationSection(key);
-                    String command = commandSection.getString("command");
-                    String hand = commandSection.getString("hand", "BOTH");
-                    InteractionType clickType = wrapClickType(hand);
-                    boolean isPlayerCommand = commandSection.getBoolean("player", true);
-                    int cooldown = commandSection.getInt("cooldown", 0);
-                    int delay = commandSection.getInt("delay", 0);
-                    if (command != null) {
-                        InteractionActionImpl action;
-                        if (isPlayerCommand) {
-                            action = new PlayerCommandAction(scheduler, command, clickType, cooldown, delay);
-                        } else {
-                            action = new ConsoleCommandAction(scheduler, command, clickType, cooldown, delay);
-                        }
-                        npc.addAction(action);
-                    }
-                }
-            }
-        }
-        return npc;
-    }
-
-    private InteractionType wrapClickType(String hand) {
-        if (hand == null) {
-            return InteractionType.ANY_CLICK;
-        }
-        switch (hand) {
-            case "RIGHT":
-            case "SHIFT_RIGHT":
-                return InteractionType.RIGHT_CLICK;
-            case "LEFT":
-            case "SHIFT_LEFT":
-                return InteractionType.LEFT_CLICK;
-            case "BOTH":
-                return InteractionType.ANY_CLICK;
-        }
-        throw new IllegalStateException();
-    }
-
-}

plugin/src/main/java/lol/pyr/znpcsplus/conversion/citizens/model/traits/EquipmentTrait.java

@@ -1,115 +0,0 @@
-package lol.pyr.znpcsplus.conversion.citizens.model.traits;
-
-import com.github.retrooper.packetevents.protocol.item.ItemStack;
-import com.github.retrooper.packetevents.protocol.player.EquipmentSlot;
-import com.google.common.io.BaseEncoding;
-import io.github.retrooper.packetevents.util.SpigotConversionUtil;
-import lol.pyr.znpcsplus.api.entity.EntityProperty;
-import lol.pyr.znpcsplus.api.entity.EntityPropertyRegistry;
-import lol.pyr.znpcsplus.conversion.citizens.model.SectionCitizensTrait;
-import lol.pyr.znpcsplus.npc.NpcImpl;
-import org.bukkit.Material;
-import org.bukkit.configuration.ConfigurationSection;
-import org.bukkit.enchantments.Enchantment;
-import org.bukkit.inventory.meta.ItemMeta;
-import org.bukkit.util.io.BukkitObjectInputStream;
-import org.jetbrains.annotations.NotNull;
-
-import java.io.ByteArrayInputStream;
-import java.io.IOException;
-import java.util.HashMap;
-import java.util.Map;
-
-public class EquipmentTrait extends SectionCitizensTrait {
-    private final EntityPropertyRegistry propertyRegistry;
-    private final HashMap<String, EquipmentSlot> EQUIPMENT_SLOT_MAP = new HashMap<>();
-
-    public EquipmentTrait(EntityPropertyRegistry propertyRegistry) {
-        super("equipment");
-        this.propertyRegistry = propertyRegistry;
-        EQUIPMENT_SLOT_MAP.put("hand", EquipmentSlot.MAIN_HAND);
-        EQUIPMENT_SLOT_MAP.put("offhand", EquipmentSlot.OFF_HAND);
-        EQUIPMENT_SLOT_MAP.put("helmet", EquipmentSlot.HELMET);
-        EQUIPMENT_SLOT_MAP.put("chestplate", EquipmentSlot.CHEST_PLATE);
-        EQUIPMENT_SLOT_MAP.put("leggings", EquipmentSlot.LEGGINGS);
-        EQUIPMENT_SLOT_MAP.put("boots", EquipmentSlot.BOOTS);
-    }
-
-    @Override
-    public @NotNull NpcImpl apply(NpcImpl npc, ConfigurationSection section) {
-        for (String key : section.getKeys(false)) {
-            EquipmentSlot slot = EQUIPMENT_SLOT_MAP.get(key);
-            if (slot == null) {
-                continue;
-            }
-
-            ItemStack itemStack = parseItemStack(section.getConfigurationSection(key));
-            if (itemStack == null) {
-                continue;
-            }
-
-            EntityProperty<ItemStack> property = propertyRegistry.getByName(key, ItemStack.class);
-            npc.setProperty(property, itemStack);
-        }
-
-        return npc;
-    }
-
-    private ItemStack parseItemStack(ConfigurationSection section) {
-        Material material = null;
-        if (section.isString("type_key")) {
-            material = Material.getMaterial(section.getString("type_key").toUpperCase());
-        } else if (section.isString("type")) {
-            material = Material.matchMaterial(section.getString("type").toUpperCase());
-        } else if (section.isString("id")) {
-            material = Material.matchMaterial(section.getString("id").toUpperCase());
-        }
-        if (material == null || material == Material.AIR) {
-            return null;
-        }
-        org.bukkit.inventory.ItemStack itemStack = new org.bukkit.inventory.ItemStack(material, section.getInt("amount", 1),
-                (short) section.getInt("durability", section.getInt("data", 0)));
-        if (section.isInt("mdata")) {
-            //noinspection deprecation
-            itemStack.getData().setData((byte) section.getInt("mdata"));
-        }
-        if (section.isConfigurationSection("enchantments")) {
-            ConfigurationSection enchantments = section.getConfigurationSection("enchantments");
-            itemStack.addUnsafeEnchantments(deserializeEnchantments(enchantments));
-        }
-        if (section.isConfigurationSection("meta")) {
-            ItemMeta itemMeta = deserializeMeta(section.getConfigurationSection("meta"));
-            if (itemMeta != null) {
-                itemStack.setItemMeta(itemMeta);
-            }
-        }
-        return SpigotConversionUtil.fromBukkitItemStack(itemStack);
-    }
-
-    private Map<Enchantment, Integer> deserializeEnchantments(ConfigurationSection section) {
-        Map<Enchantment, Integer> enchantments = new HashMap<>();
-        for (String key : section.getKeys(false)) {
-            Enchantment enchantment = Enchantment.getByName(key);
-            if (enchantment == null) {
-                continue;
-            }
-            enchantments.put(enchantment, section.getInt(key));
-        }
-        return enchantments;
-    }
-
-    private ItemMeta deserializeMeta(ConfigurationSection section) {
-        if (section.isString("encoded-meta")) {
-            byte[] raw = BaseEncoding.base64().decode(section.getString("encoded-meta"));
-            try {
-                BukkitObjectInputStream inp = new BukkitObjectInputStream(new ByteArrayInputStream(raw));
-                ItemMeta meta = (ItemMeta) inp.readObject();
-                inp.close();
-                return meta;
-            } catch (IOException | ClassNotFoundException e1) {
-                e1.printStackTrace();
-            }
-        }
-        return null;
-    }
-}

plugin/src/main/java/lol/pyr/znpcsplus/conversion/citizens/model/traits/HologramTrait.java

@@ -1,36 +0,0 @@
-package lol.pyr.znpcsplus.conversion.citizens.model.traits;
-
-import lol.pyr.znpcsplus.conversion.citizens.model.SectionCitizensTrait;
-import lol.pyr.znpcsplus.npc.NpcImpl;
-import net.kyori.adventure.text.Component;
-import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
-import org.bukkit.configuration.ConfigurationSection;
-import org.jetbrains.annotations.NotNull;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public class HologramTrait extends SectionCitizensTrait {
-    private final LegacyComponentSerializer textSerializer;
-
-    public HologramTrait(LegacyComponentSerializer textSerializer) {
-        super("hologramtrait");
-        this.textSerializer = textSerializer;
-    }
-
-    @Override
-    public @NotNull NpcImpl apply(NpcImpl npc, ConfigurationSection section) {
-        ConfigurationSection linesSection = section.getConfigurationSection("lines");
-        if (linesSection != null) {
-            List<String> keys = new ArrayList<>(linesSection.getKeys(false));
-            for (int i = keys.size() - 1; i >= 0; i--) {
-                String line = linesSection.getConfigurationSection(keys.get(i)).getString("text");
-                if (line != null) {
-                    Component component = textSerializer.deserialize(line);
-                    npc.getHologram().addTextLineComponent(component);
-                }
-            }
-        }
-        return npc;
-    }
-}

plugin/src/main/java/lol/pyr/znpcsplus/conversion/citizens/model/traits/SpawnedTrait.java

@@ -1,20 +0,0 @@
-package lol.pyr.znpcsplus.conversion.citizens.model.traits;
-
-import lol.pyr.znpcsplus.conversion.citizens.model.CitizensTrait;
-import lol.pyr.znpcsplus.npc.NpcImpl;
-import org.jetbrains.annotations.NotNull;
-
-public class SpawnedTrait extends CitizensTrait {
-
-    public SpawnedTrait() {
-        super("spawned");
-    }
-
-    @Override
-    public @NotNull NpcImpl apply(NpcImpl npc, Object value) {
-        if (value != null) {
-            npc.setEnabled((boolean) value);
-        }
-        return npc;
-    }
-}

plugin/src/main/java/lol/pyr/znpcsplus/conversion/znpcs/ZNpcImporter.java

@@ -157,7 +157,6 @@ public class ZNpcImporter implements DataImporter {
 
             HologramImpl hologram = npc.getHologram();
             hologram.setOffset(model.getHologramHeight());
-            Collections.reverse(model.getHologramLines());
             for (String raw : model.getHologramLines()) {
                 Component line = textSerializer.deserialize(raw);
                 hologram.addTextLineComponent(line);

plugin/src/main/java/lol/pyr/znpcsplus/entity/EntityPropertyRegistryImpl.java

@@ -9,7 +9,6 @@ import com.github.retrooper.packetevents.protocol.nbt.NBTInt;
 import com.github.retrooper.packetevents.protocol.nbt.NBTString;
 import com.github.retrooper.packetevents.protocol.player.EquipmentSlot;
 import com.github.retrooper.packetevents.protocol.world.BlockFace;
-import lol.pyr.znpcsplus.ZNpcsPlusBootstrap;
 import lol.pyr.znpcsplus.api.entity.EntityProperty;
 import lol.pyr.znpcsplus.api.entity.EntityPropertyRegistry;
 import lol.pyr.znpcsplus.api.skin.SkinDescriptor;
@@ -87,8 +86,6 @@ public class EntityPropertyRegistryImpl implements EntityPropertyRegistry {
         registerEnumSerializer(RabbitType.class);
         registerEnumSerializer(AttachDirection.class);
         registerEnumSerializer(Sound.class);
-        registerEnumSerializer(ArmadilloState.class);
-        registerEnumSerializer(WoldVariant.class);
 
         registerPrimitiveSerializers(Integer.class, Boolean.class, Double.class, Float.class, Long.class, Short.class, Byte.class, String.class);
 
@@ -104,7 +101,7 @@ public class EntityPropertyRegistryImpl implements EntityPropertyRegistry {
          */
     }
 
-    public void registerTypes(ZNpcsPlusBootstrap plugin, PacketFactory packetFactory, LegacyComponentSerializer textSerializer) {
+    public void registerTypes(PacketFactory packetFactory, LegacyComponentSerializer textSerializer) {
         ServerVersion ver = PacketEvents.getAPI().getServerManager().getVersion();
         boolean legacyBooleans = ver.isOlderThan(ServerVersion.V_1_9);
         boolean legacyNames = ver.isOlderThan(ServerVersion.V_1_9);
@@ -127,8 +124,6 @@ public class EntityPropertyRegistryImpl implements EntityPropertyRegistry {
 
         register(new DummyProperty<>("permission_required", false));
 
-        register(new ForceBodyRotationProperty(plugin));
-
         register(new DummyProperty<>("player_knockback", false));
         register(new DummyProperty<>("player_knockback_exempt_permission", String.class));
         register(new DummyProperty<>("player_knockback_distance", 0.4));
@@ -416,7 +411,7 @@ public class EntityPropertyRegistryImpl implements EntityPropertyRegistry {
             register(new EncodedByteProperty<>("wolf_collar", DyeColor.BLUE, wolfIndex++, DyeColor::getDyeData));
         } else register(new EncodedIntegerProperty<>("wolf_collar", DyeColor.RED, wolfIndex++, Enum::ordinal));
         if (ver.isNewerThanOrEquals(ServerVersion.V_1_16)) {
-            register(new EncodedIntegerProperty<>("wolf_angry", false, wolfIndex++, b -> b ? 1 : 0));
+            register(new EncodedIntegerProperty<>("wolf_angry", false, wolfIndex, b -> b ? 1 : 0));
             linkProperties("tamed", "sitting");
         }
         else {
@@ -639,9 +634,6 @@ public class EntityPropertyRegistryImpl implements EntityPropertyRegistry {
         // Frog
         register(new EncodedIntegerProperty<>("frog_variant", FrogVariant.TEMPERATE, 17, Enum::ordinal, EntityDataTypes.FROG_VARIANT));
 
-        // Warden
-        register(new EncodedIntegerProperty<>("warden_anger", 0, 16, b -> Math.min(150, Math.max(0, b))));
-
         if (!ver.isNewerThanOrEquals(ServerVersion.V_1_20)) return;
 
         // Camel
@@ -651,14 +643,6 @@ public class EntityPropertyRegistryImpl implements EntityPropertyRegistry {
 
         // Sniffer
         register(new CustomTypeProperty<>("sniffer_state", 17, SnifferState.IDLING, EntityDataTypes.SNIFFER_STATE, state -> com.github.retrooper.packetevents.protocol.entity.sniffer.SnifferState.valueOf(state.name())));
-
-        if (!ver.isNewerThanOrEquals(ServerVersion.V_1_20_5)) return;
-        // Armadillo
-        register(new CustomTypeProperty<>("armadillo_state", 17, ArmadilloState.IDLE, EntityDataTypes.ARMADILLO_STATE, state ->
-                com.github.retrooper.packetevents.protocol.entity.armadillo.ArmadilloState.valueOf(state.name())));
-
-        // Wolf
-        register(new EncodedIntegerProperty<>("wolf_variant", WoldVariant.PALE, wolfIndex, WoldVariant::getId, EntityDataTypes.WOLF_VARIANT));
     }
 
     private void registerSerializer(PropertySerializer<?> serializer) {

plugin/src/main/java/lol/pyr/znpcsplus/entity/PacketEntity.java

@@ -107,11 +107,6 @@ public class PacketEntity implements PropertyHolder {
         properties.setItemProperty(key, value);
     }
 
-    @Override
-    public ItemStack getItemProperty(EntityProperty<?> key) {
-        return properties.getItemProperty(key);
-    }
-
     @Override
     public Set<EntityProperty<?>> getAppliedProperties() {
         return properties.getAppliedProperties();

plugin/src/main/java/lol/pyr/znpcsplus/entity/properties/ForceBodyRotationProperty.java

@@ -1,24 +0,0 @@
-package lol.pyr.znpcsplus.entity.properties;
-
-import com.github.retrooper.packetevents.protocol.entity.data.EntityData;
-import lol.pyr.znpcsplus.ZNpcsPlusBootstrap;
-import lol.pyr.znpcsplus.entity.PacketEntity;
-import org.bukkit.Bukkit;
-import org.bukkit.entity.Player;
-
-import java.util.Map;
-
-public class ForceBodyRotationProperty extends DummyProperty<Boolean> {
-    private final ZNpcsPlusBootstrap plugin;
-
-    public ForceBodyRotationProperty(ZNpcsPlusBootstrap plugin) {
-        super("force_body_rotation", false);
-        this.plugin = plugin;
-    }
-
-    @Override
-    public void apply(Player player, PacketEntity entity, boolean isSpawned, Map<Integer, EntityData> properties) {
-        Bukkit.getScheduler().runTaskLater(plugin, () -> entity.swingHand(player, false), 2L);
-        Bukkit.getScheduler().runTaskLater(plugin, () -> entity.swingHand(player, false), 6L);
-    }
-}

plugin/src/main/java/lol/pyr/znpcsplus/hologram/HologramImpl.java

@@ -147,12 +147,10 @@ public class HologramImpl extends Viewable implements Hologram {
         for (HologramLine<?> line : lines) line.hide(player);
     }
 
-    @Override
     public long getRefreshDelay() {
         return refreshDelay;
     }
 
-    @Override
     public void setRefreshDelay(long refreshDelay) {
         this.refreshDelay = refreshDelay;
     }

plugin/src/main/java/lol/pyr/znpcsplus/hologram/HologramLine.java

@@ -1,7 +1,6 @@
 package lol.pyr.znpcsplus.hologram;
 
 import com.github.retrooper.packetevents.protocol.entity.type.EntityType;
-import io.github.retrooper.packetevents.util.SpigotConversionUtil;
 import lol.pyr.znpcsplus.api.entity.EntityProperty;
 import lol.pyr.znpcsplus.api.entity.PropertyHolder;
 import lol.pyr.znpcsplus.entity.PacketEntity;
@@ -77,12 +76,6 @@ public class HologramLine<M> implements PropertyHolder {
         throw new UnsupportedOperationException("Can't set properties on a hologram line");
     }
 
-    @SuppressWarnings("unchecked")
-    @Override
-    public ItemStack getItemProperty(EntityProperty<?> key) {
-        return SpigotConversionUtil.toBukkitItemStack(((EntityProperty<com.github.retrooper.packetevents.protocol.item.ItemStack>) key).getDefaultValue());
-    }
-
     @Override
     public Set<EntityProperty<?>> getAppliedProperties() {
         return properties;

plugin/src/main/java/lol/pyr/znpcsplus/libraries/LibraryLoader.java

@@ -0,0 +1,119 @@
+package lol.pyr.znpcsplus.libraries;
+
+import me.lucko.jarrelocator.JarRelocator;
+import me.lucko.jarrelocator.Relocation;
+import org.bukkit.plugin.Plugin;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.nio.file.Files;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.logging.Logger;
+
+public class LibraryLoader {
+    private final static Logger logger = Logger.getLogger("ZNPCsPlus Library Loader");
+
+    private final UrlClassLoaderAccess loaderAccess;
+    private final File librariesFolder;
+    private final Set<File> loadedLibraries = new HashSet<>();
+    private final List<Relocation> relocationRules = new ArrayList<>();
+
+    public LibraryLoader(Plugin plugin, File librariesFolder) {
+        loaderAccess = UrlClassLoaderAccess.create((URLClassLoader) plugin.getClass().getClassLoader());
+        this.librariesFolder = librariesFolder;
+        if (!librariesFolder.exists()) librariesFolder.mkdirs();
+    }
+
+    public void deleteUnloadedLibraries() {
+        File[] files = librariesFolder.listFiles();
+        if (files == null) return;
+        for (File file : files) if (!loadedLibraries.contains(file)) file.delete();
+    }
+
+    public void addRelocation(String pre, String post) {
+        relocationRules.add(new Relocation(pre, post));
+    }
+
+    public void loadSnapshotLibrary(String groupId, String artifactId, String version, String snapshotVersion, String repoUrl) {
+        try {
+            loadLibrary(groupId + ":" + artifactId + ":" + version,
+                    getDependencyFile(groupId, artifactId, version),
+                    getSnapshotDependencyUrl(groupId, artifactId, version, snapshotVersion, repoUrl));
+        } catch (MalformedURLException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public int loadedLibraryCount() {
+        return loadedLibraries.size();
+    }
+
+    public void loadLibrary(String groupId, String artifactId, String version) {
+        loadLibrary(groupId, artifactId, version, "https://repo1.maven.org/maven2");
+    }
+
+    public void loadLibrary(String groupId, String artifactId, String version, String repoUrl) {
+        try {
+            loadLibrary(groupId + ":" + artifactId + ":" + version,
+                    getDependencyFile(groupId, artifactId, version),
+                    getDependencyUrl(groupId, artifactId, version, repoUrl));
+        } catch (MalformedURLException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private void loadLibrary(String name, File file, URL url) {
+        if (!file.exists()) {
+            try (InputStream in = url.openStream()) {
+                File temp = new File(file.getParentFile(), file.getName() + ".temp");
+                Files.copy(in, temp.toPath());
+                new JarRelocator(temp, file, relocationRules).run();
+                temp.delete();
+                // logger.info("Downloaded library " + name);
+            } catch (IOException e) {
+                logger.severe("Failed to download library " + name);
+                e.printStackTrace();
+            }
+        }
+
+        try {
+            loaderAccess.addURL(file.toURI().toURL());
+            loadedLibraries.add(file);
+            // logger.info("Loaded library " + name);
+        } catch (Exception e) {
+            logger.severe("Failed to load library, plugin may not work correctly (" + name + ")");
+            e.printStackTrace();
+        }
+    }
+
+    private File getDependencyFile(String groupId, String artifactId, String version) {
+        return new File(librariesFolder, groupId.replace(".", "-") + "-"
+                + artifactId.replace(".", "-") + "-"
+                + version.replace(".", "-") + ".jar");
+    }
+
+    private static URL getDependencyUrl(String groupId, String artifactId, String version, String repoUrl) throws MalformedURLException {
+        String url = repoUrl.endsWith("/") ? repoUrl : repoUrl + "/";
+        url += groupId.replace(".", "/") + "/";
+        url += artifactId + "/";
+        url += version + "/";
+        url += artifactId + "-" + version + ".jar";
+        return new URL(url);
+    }
+
+    private static URL getSnapshotDependencyUrl(String groupId, String artifactId, String version, String snapshotVersion, String repoUrl) throws MalformedURLException {
+        String url = repoUrl.endsWith("/") ? repoUrl : repoUrl + "/";
+        url += groupId.replace(".", "/") + "/";
+        url += artifactId + "/";
+        url += version + "/";
+        url += artifactId + "-" + snapshotVersion + ".jar";
+        return new URL(url);
+    }
+}

plugin/src/main/java/lol/pyr/znpcsplus/libraries/UrlClassLoaderAccess.java

@@ -0,0 +1,152 @@
+package lol.pyr.znpcsplus.libraries;
+
+import javax.annotation.Nonnull;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.Collection;
+
+/**
+ * Provides access to {@link URLClassLoader}#addURL.
+ * From https://github.com/lucko/helper/blob/master/helper/src/main/java/me/lucko/helper/maven/URLClassLoaderAccess.java
+ */
+public abstract class UrlClassLoaderAccess {
+
+    /**
+     * Creates a {@link UrlClassLoaderAccess} for the given class loader.
+     *
+     * @param classLoader the class loader
+     * @return the access object
+     */
+    static UrlClassLoaderAccess create(URLClassLoader classLoader) {
+        if (Reflection.isSupported()) {
+            return new Reflection(classLoader);
+        } else if (Unsafe.isSupported()) {
+            return new Unsafe(classLoader);
+        } else {
+            return Noop.INSTANCE;
+        }
+    }
+
+    private final URLClassLoader classLoader;
+
+    protected UrlClassLoaderAccess(URLClassLoader classLoader) {
+        this.classLoader = classLoader;
+    }
+
+
+    /**
+     * Adds the given URL to the class loader.
+     *
+     * @param url the URL to add
+     */
+    public abstract void addURL(@Nonnull URL url);
+
+    /**
+     * Accesses using reflection, not supported on Java 9+.
+     */
+    private static class Reflection extends UrlClassLoaderAccess {
+        private static final Method ADD_URL_METHOD;
+
+        static {
+            Method addUrlMethod;
+            try {
+                addUrlMethod = URLClassLoader.class.getDeclaredMethod("addURL", URL.class);
+                addUrlMethod.setAccessible(true);
+            } catch (Exception e) {
+                addUrlMethod = null;
+            }
+            ADD_URL_METHOD = addUrlMethod;
+        }
+
+        private static boolean isSupported() {
+            return ADD_URL_METHOD != null;
+        }
+
+        Reflection(URLClassLoader classLoader) {
+            super(classLoader);
+        }
+
+        @Override
+        public void addURL(@Nonnull URL url) {
+            try {
+                ADD_URL_METHOD.invoke(super.classLoader, url);
+            } catch (ReflectiveOperationException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+    /**
+     * Accesses using sun.misc.Unsafe, supported on Java 9+.
+     *
+     * @author Vaishnav Anil (https://github.com/slimjar/slimjar)
+     */
+    private static class Unsafe extends UrlClassLoaderAccess {
+        private static final sun.misc.Unsafe UNSAFE;
+
+        static {
+            sun.misc.Unsafe unsafe;
+            try {
+                Field unsafeField = sun.misc.Unsafe.class.getDeclaredField("theUnsafe");
+                unsafeField.setAccessible(true);
+                unsafe = (sun.misc.Unsafe) unsafeField.get(null);
+            } catch (Throwable t) {
+                unsafe = null;
+            }
+            UNSAFE = unsafe;
+        }
+
+        private static boolean isSupported() {
+            return UNSAFE != null;
+        }
+
+        private final Collection<URL> unopenedURLs;
+        private final Collection<URL> pathURLs;
+
+        @SuppressWarnings("unchecked")
+        Unsafe(URLClassLoader classLoader) {
+            super(classLoader);
+
+            Collection<URL> unopenedURLs;
+            Collection<URL> pathURLs;
+            try {
+                Object ucp = fetchField(URLClassLoader.class, classLoader, "ucp");
+                unopenedURLs = (Collection<URL>) fetchField(ucp.getClass(), ucp, "unopenedUrls");
+                pathURLs = (Collection<URL>) fetchField(ucp.getClass(), ucp, "path");
+            } catch (Throwable e) {
+                unopenedURLs = null;
+                pathURLs = null;
+            }
+            this.unopenedURLs = unopenedURLs;
+            this.pathURLs = pathURLs;
+        }
+
+        private static Object fetchField(final Class<?> clazz, final Object object, final String name) throws NoSuchFieldException {
+            Field field = clazz.getDeclaredField(name);
+            long offset = UNSAFE.objectFieldOffset(field);
+            return UNSAFE.getObject(object, offset);
+        }
+
+        @Override
+        public void addURL(@Nonnull URL url) {
+            this.unopenedURLs.add(url);
+            this.pathURLs.add(url);
+        }
+    }
+
+    private static class Noop extends UrlClassLoaderAccess {
+        private static final Noop INSTANCE = new Noop();
+
+        private Noop() {
+            super(null);
+        }
+
+        @Override
+        public void addURL(@Nonnull URL url) {
+            throw new UnsupportedOperationException();
+        }
+    }
+
+}

plugin/src/main/java/lol/pyr/znpcsplus/npc/NpcImpl.java

@@ -20,7 +20,6 @@ import org.bukkit.Location;
 import org.bukkit.World;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
-import org.jetbrains.annotations.Nullable;
 
 import java.util.*;
 import java.util.stream.Collectors;
@@ -76,10 +75,8 @@ public class NpcImpl extends Viewable implements Npc {
         return location;
     }
 
-    public @Nullable Location getBukkitLocation() {
-        World world = getWorld();
-        if (world == null) return null;
-        return location.toBukkitLocation(world);
+    public Location getBukkitLocation() {
+        return location.toBukkitLocation(getWorld());
     }
 
     public void setLocation(NpcLocation location) {
@@ -115,7 +112,7 @@ public class NpcImpl extends Viewable implements Npc {
         return uuid;
     }
 
-    public @Nullable World getWorld() {
+    public World getWorld() {
         return Bukkit.getWorld(worldName);
     }
 
@@ -136,7 +133,6 @@ public class NpcImpl extends Viewable implements Npc {
     }
 
     private <T> void UNSAFE_refreshProperty(EntityPropertyImpl<T> property) {
-        if (!type.isAllowedProperty(property)) return;
         for (Player viewer : getViewers()) {
             List<EntityData> data = property.applyStandalone(viewer, entity, true);
             if (!data.isEmpty()) packetFactory.sendMetadata(viewer, entity, data);
@@ -168,12 +164,6 @@ public class NpcImpl extends Viewable implements Npc {
         setProperty((EntityPropertyImpl<com.github.retrooper.packetevents.protocol.item.ItemStack>) key, SpigotConversionUtil.fromBukkitItemStack(value));
     }
 
-    @SuppressWarnings("unchecked")
-    @Override
-    public ItemStack getItemProperty(EntityProperty<?> key) {
-        return SpigotConversionUtil.toBukkitItemStack(getProperty((EntityProperty<com.github.retrooper.packetevents.protocol.item.ItemStack>) key));
-    }
-
     public <T> void setProperty(EntityPropertyImpl<T> key, T value) {
         if (key == null) return;
         if (value == null || value.equals(key.getDefaultValue())) propertyMap.remove(key);
@@ -186,11 +176,6 @@ public class NpcImpl extends Viewable implements Npc {
         setProperty((EntityPropertyImpl<T>) property, (T) value);
     }
 
-    @SuppressWarnings("unchecked")
-    public <T> void UNSAFE_setProperty(EntityProperty<?> property, Object value) {
-        setProperty((EntityPropertyImpl<T>) property, (T) value);
-    }
-
     public Set<EntityProperty<?>> getAllProperties() {
         return Collections.unmodifiableSet(propertyMap.keySet());
     }

plugin/src/main/java/lol/pyr/znpcsplus/npc/NpcRegistryImpl.java

@@ -1,17 +1,12 @@
 package lol.pyr.znpcsplus.npc;
 
 import lol.pyr.znpcsplus.ZNpcsPlus;
-import lol.pyr.znpcsplus.api.entity.EntityProperty;
 import lol.pyr.znpcsplus.api.npc.NpcEntry;
 import lol.pyr.znpcsplus.api.npc.NpcRegistry;
 import lol.pyr.znpcsplus.api.npc.NpcType;
 import lol.pyr.znpcsplus.config.ConfigManager;
 import lol.pyr.znpcsplus.entity.EntityPropertyRegistryImpl;
-import lol.pyr.znpcsplus.hologram.HologramItem;
-import lol.pyr.znpcsplus.hologram.HologramLine;
-import lol.pyr.znpcsplus.hologram.HologramText;
 import lol.pyr.znpcsplus.interaction.ActionRegistry;
-import lol.pyr.znpcsplus.interaction.InteractionActionImpl;
 import lol.pyr.znpcsplus.packets.PacketFactory;
 import lol.pyr.znpcsplus.scheduling.TaskScheduler;
 import lol.pyr.znpcsplus.storage.NpcStorage;
@@ -158,35 +153,6 @@ public class NpcRegistryImpl implements NpcRegistry {
         return entry;
     }
 
-    public NpcEntryImpl clone(String id, String newId, World newWorld, NpcLocation newLocation) {
-        NpcEntryImpl oldNpc = getById(id);
-        if (oldNpc == null) return null;
-        NpcEntryImpl newNpc = create(newId, newWorld, oldNpc.getNpc().getType(), newLocation);
-        newNpc.enableEverything();
-
-        for (EntityProperty<?> property : oldNpc.getNpc().getAllProperties()) {
-            newNpc.getNpc().UNSAFE_setProperty(property, oldNpc.getNpc().getProperty(property));
-        }
-
-        for (InteractionActionImpl action : oldNpc.getNpc().getActions()) {
-            newNpc.getNpc().addAction(action);
-        }
-
-        for (HologramLine<?> line : oldNpc.getNpc().getHologram().getLines()) {
-            if (line instanceof HologramText) {
-                HologramText text = (HologramText) line;
-                newNpc.getNpc().getHologram().addTextLineComponent(text.getValue());
-            }
-            else if (line instanceof HologramItem) {
-                HologramItem item = (HologramItem) line;
-                newNpc.getNpc().getHologram().addItemLinePEStack(item.getValue());
-            }
-            else throw new IllegalArgumentException("Unknown hologram line type during clone");
-        }
-
-        return newNpc;
-    }
-
     @Override
     public void delete(String id) {
         NpcEntryImpl entry = npcIdLookupMap.get(id.toLowerCase());

plugin/src/main/java/lol/pyr/znpcsplus/npc/NpcTypeImpl.java

@@ -164,18 +164,12 @@ public class NpcTypeImpl implements NpcType {
                     addProperties("panda_eating");
                 }
             }
-            if (EntityTypes.isTypeInstanceOf(type, EntityTypes.ABSTRACT_TAMEABLE_ANIMAL) &&
-                    !(version.isNewerThanOrEquals(ServerVersion.V_1_14) && type.equals(EntityTypes.OCELOT))) {
+            if (EntityTypes.isTypeInstanceOf(type, EntityTypes.ABSTRACT_TAMEABLE_ANIMAL)) {
                 addProperties("tamed", "sitting");
             }
             if (EntityTypes.isTypeInstanceOf(type, EntityTypes.GUARDIAN)) {
                 addProperties("is_retracting_spikes");
             }
-            if (version.isNewerThanOrEquals(ServerVersion.V_1_20_5)) {
-                if (EntityTypes.isTypeInstanceOf(type, EntityTypes.WOLF)) {
-                    addProperties("wolf_variant");
-                }
-            }
             return new NpcTypeImpl(name, type, hologramOffset, new HashSet<>(allowedProperties), defaultProperties);
         }
     }

plugin/src/main/java/lol/pyr/znpcsplus/npc/NpcTypeRegistryImpl.java

@@ -36,7 +36,7 @@ public class NpcTypeRegistryImpl implements NpcTypeRegistry {
         register(builder(p, "player", EntityTypes.PLAYER)
                 .setHologramOffset(-0.15D)
                 .addEquipmentProperties()
-                .addProperties("skin_cape", "skin_jacket", "skin_left_sleeve", "skin_right_sleeve", "skin_left_leg", "skin_right_leg", "skin_hat", "shoulder_entity_left", "shoulder_entity_right", "force_body_rotation")
+                .addProperties("skin_cape", "skin_jacket", "skin_left_sleeve", "skin_right_sleeve", "skin_left_leg", "skin_right_leg", "skin_hat", "shoulder_entity_left", "shoulder_entity_right")
                 .addDefaultProperty("skin_cape", true)
                 .addDefaultProperty("skin_jacket", true)
                 .addDefaultProperty("skin_left_sleeve", true)
@@ -357,8 +357,7 @@ public class NpcTypeRegistryImpl implements NpcTypeRegistry {
                 .setHologramOffset(-1.675));
 
         register(builder(p, "warden", EntityTypes.WARDEN)
-                .setHologramOffset(0.925)
-                .addProperties("warden_anger"));
+                .setHologramOffset(0.925));
 
         if (!version.isNewerThanOrEquals(ServerVersion.V_1_20)) return;
 
@@ -369,12 +368,6 @@ public class NpcTypeRegistryImpl implements NpcTypeRegistry {
         register(builder(p, "camel", EntityTypes.CAMEL)
                 .setHologramOffset(0.25)
                 .addProperties("bashing", "camel_sitting"));
-
-        if (!version.isNewerThanOrEquals(ServerVersion.V_1_20_5)) return;
-
-        register(builder(p, "armadillo", EntityTypes.ARMADILLO)
-                .setHologramOffset(-1.475)
-                .addProperties("armadillo_state"));
     }
 
     public Collection<NpcType> getAll() {

plugin/src/main/java/lol/pyr/znpcsplus/reflection/ReflectionPackage.java

@@ -14,27 +14,21 @@ import java.util.stream.Collectors;
  * pre-1.17 had all of their classes "flattened" into one package.
  */
 public class ReflectionPackage {
-    private static final String VERSION = generateVersion();
-    public static final String BUKKIT = "org.bukkit.craftbukkit" + VERSION;
+    private static final String VERSION = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3];
+    public static final String BUKKIT = "org.bukkit.craftbukkit." + VERSION;
     private static final boolean flattened = !PacketEvents.getAPI().getServerManager().getVersion().isNewerThanOrEquals(ServerVersion.V_1_17);
 
     /**
      * Check if the classes are flattened, if so we need to add the version string into the
      * package string which is another quirk of the old server jars.
      */
-    public static final String MINECRAFT = joinWithDot("net.minecraft", flattened ? "server" + VERSION : "");
+    public static final String MINECRAFT = joinWithDot("net.minecraft", flattened ? "server." + VERSION : "");
     public static final String ENTITY = flattened ? MINECRAFT : joinWithDot(MINECRAFT, "world.entity");
 
     public static String joinWithDot(String... parts) {
         return Arrays.stream(parts)
                 .filter(Objects::nonNull)
-                .filter(p -> !p.isEmpty())
+                .filter(p -> p.length() != 0)
                 .collect(Collectors.joining("."));
     }
-
-    private static String generateVersion() {
-        String[] parts = Bukkit.getServer().getClass().getPackage().getName().split("\\.");
-        if (parts.length > 3) return "." + parts[3];
-        return "";
-    }
 }