Updated to 6.66.1

This reverts commit 5cfb87e0

.github/CODEOWNERS

@@ -0,0 +1 @@
+* @WillFP

.github/workflows/master-pr.yml

@@ -0,0 +1,21 @@
+name: PR Alert for Master Branch
+on:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  alert:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Comment PR
+        uses: actions/github-script@v5
+        with:
+          github-token: ${{secrets.GITHUB_TOKEN}}
+          script: |
+            github.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: '⚠️ PRs should not be opened against the `master` branch directly. Please use the `develop` branch as the base for your PRs. ⚠️'
+            })

build.gradle.kts

@@ -10,7 +10,7 @@ buildscript {
 
 plugins {
     id("java-library")
-    id("com.github.johnrengelman.shadow") version "7.1.2"
+    id("com.github.johnrengelman.shadow") version "8.1.1"
     id("maven-publish")
     id("java")
     kotlin("jvm") version "1.7.10"
@@ -27,6 +27,8 @@ dependencies {
     implementation(project(path = ":eco-core:core-nms:v1_19_R1", configuration = "reobf"))
     implementation(project(path = ":eco-core:core-nms:v1_19_R2", configuration = "reobf"))
     implementation(project(path = ":eco-core:core-nms:v1_19_R3", configuration = "reobf"))
+    implementation(project(path = ":eco-core:core-nms:v1_20_R1", configuration = "reobf"))
+    implementation(project(path = ":eco-core:core-nms:v1_20_R2", configuration = "reobf"))
 }
 
 allprojects {
@@ -80,9 +82,6 @@ allprojects {
         // LibsDisguises
         maven("https://repo.md-5.net/content/groups/public/")
 
-        // UltraEconomy
-        maven("https://repo.techscode.com/repository/maven-releases/")
-
         // PlayerPoints
         maven("https://repo.rosewooddev.io/repository/public/")
 

eco-api/src/main/java/com/willfp/eco/core/Eco.java

@@ -135,6 +135,14 @@ public interface Eco {
     @NotNull
     Logger createLogger(@NotNull EcoPlugin plugin);
 
+    /**
+     * Get NOOP logger.
+     *
+     * @return The logger.
+     */
+    @NotNull
+    Logger getNOOPLogger();
+
     /**
      * Create a PAPI integration.
      *
@@ -170,7 +178,7 @@ public interface Eco {
      * @return The PluginCommandBase implementation
      */
     @NotNull
-    PluginCommandBase createPluginCommand(@NotNull CommandBase parentDelegate,
+    PluginCommandBase createPluginCommand(@NotNull PluginCommandBase parentDelegate,
                                           @NotNull EcoPlugin plugin,
                                           @NotNull String name,
                                           @NotNull String permission,
@@ -393,15 +401,6 @@ public interface Eco {
     @NotNull
     ServerProfile getServerProfile();
 
-    /**
-     * Unload a player profile from memory.
-     * <p>
-     * This will not save the profile first.
-     *
-     * @param uuid The uuid.
-     */
-    void unloadPlayerProfile(@NotNull UUID uuid);
-
     /**
      * Create dummy entity - never spawned, exists purely in code.
      *
@@ -528,9 +527,10 @@ public interface Eco {
      *
      * @param expression The expression.
      * @param context    The context.
-     * @return The value of the expression, or zero if invalid.
+     * @return The value of the expression, or null if invalid.
      */
-    double evaluate(@NotNull String expression,
+    @Nullable
+    Double evaluate(@NotNull String expression,
                     @NotNull PlaceholderContext context);
 
     /**

eco-api/src/main/java/com/willfp/eco/core/EcoPlugin.java

@@ -126,7 +126,7 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike, Regist
     /**
      * The logger for the plugin.
      */
-    private final Logger logger;
+    private Logger logger;
 
     /**
      * If the server is running an outdated version of the plugin.
@@ -164,6 +164,11 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike, Regist
      */
     private final ListMap<LifecyclePosition, Runnable> afterLoad = new ListMap<>();
 
+    /**
+     * The tasks to run on task creation.
+     */
+    private final ListMap<LifecyclePosition, Runnable> createTasks = new ListMap<>();
+
     /**
      * Create a new plugin.
      * <p>
@@ -425,7 +430,18 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike, Regist
 
         this.loadPluginCommands().forEach(PluginCommand::register);
 
-        this.getScheduler().runLater(this::afterLoad, 1);
+        // Run preliminary reload to resolve load order issues
+        this.getScheduler().runLater(() -> {
+            Logger before = this.getLogger();
+            // Temporary silence logger.
+            this.logger = Eco.get().getNOOPLogger();
+
+            this.reload(false);
+
+            this.logger = before;
+        }, 1);
+
+        this.getScheduler().runLater(this::afterLoad, 2);
 
         if (this.isSupportingExtensions()) {
             this.getExtensionLoader().loadExtensions();
@@ -601,14 +617,30 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike, Regist
      * Reload the plugin.
      */
     public final void reload() {
+        this.reload(true);
+    }
+
+    /**
+     * Reload the plugin.
+     *
+     * @param cancelTasks If tasks should be cancelled.
+     */
+    public final void reload(final boolean cancelTasks) {
         this.getConfigHandler().updateConfigs();
 
-        this.getScheduler().cancelAll();
+        if (cancelTasks) {
+            this.getScheduler().cancelAll();
+        }
+
         this.getConfigHandler().callUpdate();
         this.getConfigHandler().callUpdate(); // Call twice to fix issues
 
         this.handleLifecycle(this.onReload, this::handleReload);
 
+        if (cancelTasks) {
+            this.handleLifecycle(this.createTasks, this::createTasks);
+        }
+
         for (Extension extension : this.extensionLoader.getLoadedExtensions()) {
             extension.handleReload();
         }
@@ -722,6 +754,15 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike, Regist
 
     }
 
+    /**
+     * The plugin-specific code to create tasks.
+     * <p>
+     * Override when needed.
+     */
+    protected void createTasks() {
+
+    }
+
     /**
      * The plugin-specific code to be executed after the server is up.
      * <p>
@@ -1150,6 +1191,16 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike, Regist
         return this.getMetadataValueFactory().create(value);
     }
 
+    /**
+     * Get if all {@link com.willfp.eco.core.data.keys.PersistentDataKey}'s for this
+     * plugin should be saved locally (via data.yml.) even if eco is using a database.
+     *
+     * @return If using local storage.
+     */
+    public boolean isUsingLocalStorage() {
+        return this.configYml.isUsingLocalStorage();
+    }
+
     @Override
     @NotNull
     public final String getID() {

eco-api/src/main/java/com/willfp/eco/core/Prerequisite.java

@@ -37,11 +37,19 @@ public class Prerequisite {
             "Requires server to have ProtocolLib"
     );
 
+    /**
+     * Requires the server to be running 1.20.
+     */
+    public static final Prerequisite HAS_1_20 = new Prerequisite(
+            () -> ProxyConstants.NMS_VERSION.contains("20"),
+            "Requires server to be running 1.20+"
+    );
+
     /**
      * Requires the server to be running 1.19.4.
      */
     public static final Prerequisite HAS_1_19_4 = new Prerequisite(
-            () -> ProxyConstants.NMS_VERSION.contains("19_R3"),
+            () -> ProxyConstants.NMS_VERSION.contains("19_R3") || HAS_1_20.isMet(),
             "Requires server to be running 1.19.4+"
     );
 
@@ -49,7 +57,7 @@ public class Prerequisite {
      * Requires the server to be running 1.19.
      */
     public static final Prerequisite HAS_1_19 = new Prerequisite(
-            () -> ProxyConstants.NMS_VERSION.contains("19"),
+            () -> ProxyConstants.NMS_VERSION.contains("19") || HAS_1_20.isMet(),
             "Requires server to be running 1.19+"
     );
 

eco-api/src/main/java/com/willfp/eco/core/config/base/ConfigYml.java

@@ -9,6 +9,11 @@ import org.jetbrains.annotations.NotNull;
  * Default plugin config.yml.
  */
 public class ConfigYml extends BaseConfig {
+    /**
+     * The use local storage key.
+     */
+    public static final String KEY_USES_LOCAL_STORAGE = "use-local-storage";
+
     /**
      * Config.yml.
      *
@@ -52,4 +57,13 @@ public class ConfigYml extends BaseConfig {
                      final boolean removeUnused) {
         super(name, plugin, removeUnused, ConfigType.YAML);
     }
+
+    /**
+     * Get if the plugin is using local storage.
+     *
+     * @return The prefix.
+     */
+    public boolean isUsingLocalStorage() {
+        return this.getBool(KEY_USES_LOCAL_STORAGE);
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/config/interfaces/Config.java

@@ -15,6 +15,7 @@ import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
@@ -596,7 +597,10 @@ public interface Config extends Cloneable, PlaceholderInjectable {
      */
     default double getDoubleFromExpression(@NotNull String path,
                                            @NotNull PlaceholderContext context) {
-        return NumberUtils.evaluateExpression(this.getString(path), context.withInjectableContext(this));
+        return Objects.requireNonNullElseGet(
+                this.getDoubleOrNull(path),
+                () -> NumberUtils.evaluateExpression(this.getString(path), context.withInjectableContext(this))
+        );
     }
 
     /**
@@ -648,6 +652,32 @@ public interface Config extends Cloneable, PlaceholderInjectable {
     @Nullable
     List<? extends Config> getSubsectionsOrNull(@NotNull String path);
 
+    /**
+     * Get a big decimal from config.
+     *
+     * @param path The key to fetch the value from.
+     * @return The found value, or 0 if not found.
+     */
+    @NotNull
+    default BigDecimal getBigDecimal(@NotNull final String path) {
+        return Objects.requireNonNullElse(getBigDecimalOrNull(path), BigDecimal.ZERO);
+    }
+
+    /**
+     * Get a big decimal from config.
+     *
+     * @param path The key to fetch the value from.
+     * @return The found value, or null if not found.
+     */
+    @Nullable
+    default BigDecimal getBigDecimalOrNull(@NotNull final String path) {
+        if (this.has(path)) {
+            return new BigDecimal(this.getString(path));
+        } else {
+            return null;
+        }
+    }
+
     /**
      * Get config type.
      *

eco-api/src/main/java/com/willfp/eco/core/data/ServerProfile.java

@@ -9,6 +9,22 @@ import org.jetbrains.annotations.NotNull;
  * Profiles save automatically, so there is no need to save after changes.
  */
 public interface ServerProfile extends Profile {
+    /**
+     * Get the server ID.
+     *
+     * @return The server ID.
+     */
+    @NotNull
+    String getServerID();
+
+    /**
+     * Get the local server ID.
+     *
+     * @return The local server ID.
+     */
+    @NotNull
+    String getLocalServerID();
+
     /**
      * Load the server profile.
      *

eco-api/src/main/java/com/willfp/eco/core/data/keys/PersistentDataKeyType.java

@@ -4,6 +4,7 @@ import com.willfp.eco.core.config.interfaces.Config;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
@@ -49,6 +50,11 @@ public final class PersistentDataKeyType<T> {
      */
     public static final PersistentDataKeyType<Config> CONFIG = new PersistentDataKeyType<>("CONFIG");
 
+    /**
+     * Big Decimal.
+     */
+    public static final PersistentDataKeyType<BigDecimal> BIG_DECIMAL = new PersistentDataKeyType<>("BIG_DECIMAL");
+
     /**
      * The name of the key type.
      */

eco-api/src/main/java/com/willfp/eco/core/display/Display.java

@@ -1,5 +1,6 @@
 package com.willfp.eco.core.display;
 
+import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.fast.FastItemStack;
 import com.willfp.eco.core.integrations.guidetection.GUIDetectionManager;
 import com.willfp.eco.util.NamespacedKeyUtils;
@@ -68,8 +69,10 @@ public final class Display {
 
         Display.revert(itemStack);
 
-        if (!itemStack.hasItemMeta()) {
-            return itemStack;
+        if (!Eco.get().getEcoPlugin().getConfigYml().getBool("display-without-meta")) {
+            if (!itemStack.hasItemMeta()) {
+                return itemStack;
+            }
         }
 
         ItemStack original = itemStack.clone();

eco-api/src/main/java/com/willfp/eco/core/gui/menu/MenuBuilder.java

@@ -142,6 +142,26 @@ public interface MenuBuilder extends PageBuilder {
         return this.onRender((player, menu) -> menu.setState(player, Page.MAX_PAGE_KEY, pages.apply(player)));
     }
 
+    /**
+     * Set the default page.
+     *
+     * @param page The page.
+     * @return The builder.
+     */
+    default MenuBuilder defaultPage(final int page) {
+        return this.maxPages(player -> page);
+    }
+
+    /**
+     * Set the default page dynamically for a player.
+     *
+     * @param page The default page.
+     * @return The builder.
+     */
+    default MenuBuilder defaultPage(@NotNull final Function<Player, Integer> page) {
+        return this.onOpen((player, menu) -> menu.setState(player, Page.PAGE_KEY, page.apply(player)));
+    }
+
     /**
      * Add a menu close handler.
      *

eco-api/src/main/java/com/willfp/eco/core/gui/slot/CustomSlot.java

@@ -2,6 +2,7 @@ package com.willfp.eco.core.gui.slot;
 
 import com.willfp.eco.core.gui.menu.Menu;
 import org.bukkit.entity.Player;
+import org.bukkit.event.inventory.ClickType;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -76,6 +77,15 @@ public abstract class CustomSlot implements Slot {
         return delegate;
     }
 
+    @Override
+    public boolean shouldRenderOnClick(@NotNull final ClickType clickType) {
+        if (delegate == null) {
+            throw new IllegalStateException("Custom Slot was not initialized!");
+        }
+
+        return delegate.shouldRenderOnClick(clickType);
+    }
+
     @Override
     public final int getRows() {
         return Slot.super.getRows();

eco-api/src/main/java/com/willfp/eco/core/gui/slot/Slot.java

@@ -7,6 +7,7 @@ import com.willfp.eco.core.gui.slot.functional.SlotProvider;
 import com.willfp.eco.core.items.TestableItem;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
+import org.bukkit.event.inventory.ClickType;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -92,6 +93,27 @@ public interface Slot extends GUIComponent {
         return false;
     }
 
+    /**
+     * If the slot should re-render the menu if clicked.
+     *
+     * @return If the slot should re-render.
+     * @deprecated Use {@link Slot#shouldRenderOnClick(ClickType)} instead.
+     */
+    @Deprecated(since = "6.66.0", forRemoval = true)
+    default boolean shouldRenderOnClick() {
+        return shouldRenderOnClick(ClickType.LEFT);
+    }
+
+    /**
+     * If the slot should re-render the menu if clicked.
+     *
+     * @param clickType The click type.
+     * @return If the slot should re-render.
+     */
+    default boolean shouldRenderOnClick(@NotNull final ClickType clickType) {
+        return true;
+    }
+
     @Override
     default int getRows() {
         return 1;

eco-api/src/main/java/com/willfp/eco/core/integrations/IntegrationRegistry.java

@@ -17,6 +17,13 @@ import java.util.function.Supplier;
  * @param <T> The type of integration.
  */
 public class IntegrationRegistry<T extends Integration> extends Registry<T> {
+    /**
+     * Create a new integration registry.
+     */
+    public IntegrationRegistry() {
+        super();
+    }
+
     @Override
     public @NotNull T register(@NotNull final T element) {
         return executeSafely(() -> super.register(element), element);
@@ -110,7 +117,7 @@ public class IntegrationRegistry<T extends Integration> extends Registry<T> {
                                 @Nullable final R defaultValue) {
         try {
             return action.get();
-        } catch (final Exception e) {
+        } catch (final Exception | LinkageError e) {
             Eco.get().getEcoPlugin().getLogger().warning("Integration for " + integration.getPluginName() + " threw an exception!");
             Eco.get().getEcoPlugin().getLogger().warning("The integration will be disabled.");
             e.printStackTrace();

eco-api/src/main/java/com/willfp/eco/core/integrations/placeholder/PlaceholderManager.java

@@ -98,6 +98,7 @@ public final class PlaceholderManager {
         // Storing as immutable set leads to slower times to register placeholders, but much
         // faster times to access registrations.
         Set<Placeholder> pluginPlaceholders = new HashSet<>(REGISTERED_PLACEHOLDERS.get(placeholder.getPlugin()));
+        pluginPlaceholders.removeIf(p -> p.getPattern().equals(placeholder.getPattern()));
         pluginPlaceholders.add(placeholder);
         REGISTERED_PLACEHOLDERS.put(placeholder.getPlugin(), ImmutableSet.copyOf(pluginPlaceholders));
     }
@@ -168,7 +169,15 @@ public final class PlaceholderManager {
     public static String translatePlaceholders(@NotNull final String text,
                                                @Nullable final Player player,
                                                @NotNull final PlaceholderInjectable context) {
-        return translatePlaceholders(text, player, context, new ArrayList<>());
+        return translatePlaceholders(
+                text,
+                new PlaceholderContext(
+                        player,
+                        null,
+                        context,
+                        new ArrayList<>()
+                )
+        );
     }
 
     /**

eco-api/src/main/java/com/willfp/eco/core/items/CustomItem.java

@@ -1,7 +1,6 @@
 package com.willfp.eco.core.items;
 
 import com.willfp.eco.core.Eco;
-import org.bukkit.Bukkit;
 import org.bukkit.NamespacedKey;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -55,7 +54,7 @@ public class CustomItem implements TestableItem {
          */
         Eco.get().getEcoPlugin().getScheduler().runLater(() -> {
             if (!matches(getItem())) {
-                Bukkit.getLogger().severe("Item with key " + key + " is invalid!");
+                Eco.get().getEcoPlugin().getLogger().severe("Item with key " + key + " is invalid!");
             }
         }, 1);
     }

eco-api/src/main/java/com/willfp/eco/core/map/DefaultMap.java

@@ -150,7 +150,7 @@ public class DefaultMap<K, V> implements Map<K, V> {
      */
     @NotNull
     public static <K, K1, V> DefaultMap<K, Map<K1, V>> createNestedMap() {
-        return new DefaultMap<>(new HashMap<>());
+        return new DefaultMap<>(HashMap::new);
     }
 
     /**
@@ -163,6 +163,6 @@ public class DefaultMap<K, V> implements Map<K, V> {
      */
     @NotNull
     public static <K, K1, V> DefaultMap<K, ListMap<K1, V>> createNestedListMap() {
-        return new DefaultMap<>(new ListMap<>());
+        return new DefaultMap<>(ListMap::new);
     }
 }

eco-api/src/main/java/com/willfp/eco/core/placeholder/PlayerPlaceholder.java

@@ -2,6 +2,7 @@ package com.willfp.eco.core.placeholder;
 
 import com.willfp.eco.core.EcoPlugin;
 import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.util.PatternUtils;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -40,7 +41,7 @@ public final class PlayerPlaceholder implements RegistrablePlaceholder {
                              @NotNull final String identifier,
                              @NotNull final Function<@NotNull Player, @Nullable String> function) {
         this.plugin = plugin;
-        this.pattern = Pattern.compile(identifier, Pattern.LITERAL);
+        this.pattern = PatternUtils.compileLiteral(identifier);
         this.function = function;
     }
 

eco-api/src/main/java/com/willfp/eco/core/placeholder/PlayerStaticPlaceholder.java

@@ -1,6 +1,7 @@
 package com.willfp.eco.core.placeholder;
 
 import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.util.PatternUtils;
 import com.willfp.eco.util.StringUtils;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
@@ -38,7 +39,7 @@ public final class PlayerStaticPlaceholder implements InjectablePlaceholder {
     public PlayerStaticPlaceholder(@NotNull final String identifier,
                                    @NotNull final Function<@NotNull Player, @Nullable String> function) {
         this.identifier = "%" + identifier + "%";
-        this.pattern = Pattern.compile(identifier, Pattern.LITERAL);
+        this.pattern = PatternUtils.compileLiteral(identifier);
         this.function = function;
     }
 

eco-api/src/main/java/com/willfp/eco/core/placeholder/PlayerlessPlaceholder.java

@@ -2,6 +2,7 @@ package com.willfp.eco.core.placeholder;
 
 import com.willfp.eco.core.EcoPlugin;
 import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.util.PatternUtils;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -39,7 +40,7 @@ public final class PlayerlessPlaceholder implements RegistrablePlaceholder {
                                  @NotNull final String identifier,
                                  @NotNull final Supplier<@Nullable String> function) {
         this.plugin = plugin;
-        this.pattern = Pattern.compile(identifier, Pattern.LITERAL);
+        this.pattern = PatternUtils.compileLiteral(identifier);
         this.function = function;
     }
 

eco-api/src/main/java/com/willfp/eco/core/placeholder/StaticPlaceholder.java

@@ -1,6 +1,7 @@
 package com.willfp.eco.core.placeholder;
 
 import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.util.PatternUtils;
 import com.willfp.eco.util.StringUtils;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -37,7 +38,7 @@ public final class StaticPlaceholder implements InjectablePlaceholder {
     public StaticPlaceholder(@NotNull final String identifier,
                              @NotNull final Supplier<@Nullable String> function) {
         this.identifier = "%" + identifier + "%";
-        this.pattern = Pattern.compile(identifier, Pattern.LITERAL);
+        this.pattern = PatternUtils.compileLiteral(identifier);
         this.function = function;
     }
 

eco-api/src/main/java/com/willfp/eco/core/placeholder/context/MergedInjectableContext.java

@@ -3,10 +3,12 @@ package com.willfp.eco.core.placeholder.context;
 import com.willfp.eco.core.placeholder.InjectablePlaceholder;
 import com.willfp.eco.core.placeholder.PlaceholderInjectable;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Objects;
 import java.util.Set;
 
 /**
@@ -67,4 +69,24 @@ public class MergedInjectableContext implements PlaceholderInjectable {
 
         return injections;
     }
+
+    @Override
+    public boolean equals(@Nullable final Object o) {
+        if (this == o) {
+            return true;
+        }
+
+        if (!(o instanceof MergedInjectableContext that)) {
+            return false;
+        }
+
+        return Objects.equals(baseContext, that.baseContext)
+                && Objects.equals(additionalContext, that.additionalContext)
+                && Objects.equals(extraInjections, that.extraInjections);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(baseContext, additionalContext, extraInjections);
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/placeholder/templates/SimpleInjectablePlaceholder.java

@@ -2,6 +2,7 @@ package com.willfp.eco.core.placeholder.templates;
 
 import com.willfp.eco.core.placeholder.InjectablePlaceholder;
 import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.util.PatternUtils;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.Objects;
@@ -28,7 +29,7 @@ public abstract class SimpleInjectablePlaceholder implements InjectablePlacehold
      */
     protected SimpleInjectablePlaceholder(@NotNull final String identifier) {
         this.identifier = identifier;
-        this.pattern = Pattern.compile(identifier, Pattern.LITERAL);
+        this.pattern = PatternUtils.compileLiteral(identifier);
     }
 
     @Override

eco-api/src/main/java/com/willfp/eco/core/placeholder/templates/SimplePlaceholder.java

@@ -3,6 +3,7 @@ package com.willfp.eco.core.placeholder.templates;
 import com.willfp.eco.core.EcoPlugin;
 import com.willfp.eco.core.placeholder.RegistrablePlaceholder;
 import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.util.PatternUtils;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.Objects;
@@ -37,7 +38,7 @@ public abstract class SimplePlaceholder implements RegistrablePlaceholder {
                                 @NotNull final String identifier) {
         this.plugin = plugin;
         this.identifier = identifier;
-        this.pattern = Pattern.compile(identifier, Pattern.LITERAL);
+        this.pattern = PatternUtils.compileLiteral(identifier);
     }
 
     @Override

eco-api/src/main/java/com/willfp/eco/core/price/ConfiguredPrice.java

@@ -1,5 +1,6 @@
 package com.willfp.eco.core.price;
 
+import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.config.interfaces.Config;
 import com.willfp.eco.core.placeholder.context.PlaceholderContext;
 import com.willfp.eco.core.price.impl.PriceFree;
@@ -158,12 +159,27 @@ public final class ConfiguredPrice implements Price {
             if (!(
                     config.has("value")
                             && config.has("type")
-                            && config.has("display")
             )) {
                 return null;
             }
 
-            String formatString = config.getString("display");
+            String formatString;
+
+            String langConfig = Eco.get().getEcoPlugin().getLangYml()
+                    .getSubsections("price-display")
+                    .stream()
+                    .filter(section -> section.getString("type").equalsIgnoreCase(config.getString("type")))
+                    .findFirst()
+                    .map(section -> section.getString("display"))
+                    .orElse(null);
+
+            if (langConfig != null) {
+                formatString = langConfig;
+            } else if (config.has("display")) {
+                formatString = config.getString("display");
+            } else {
+                return null;
+            }
 
             Price price = Prices.create(
                     config.getString("value"),

eco-api/src/main/java/com/willfp/eco/core/proxy/ProxyConstants.java

@@ -23,7 +23,9 @@ public final class ProxyConstants {
             "v1_18_R2",
             "v1_19_R1",
             "v1_19_R2",
-            "v1_19_R3"
+            "v1_19_R3",
+            "v1_20_R1",
+            "v1_20_R2"
     );
 
     private ProxyConstants() {

eco-api/src/main/java/com/willfp/eco/core/recipe/Recipes.java

@@ -9,7 +9,6 @@ import com.willfp.eco.core.items.Items;
 import com.willfp.eco.core.recipe.recipes.CraftingRecipe;
 import com.willfp.eco.core.recipe.recipes.ShapedCraftingRecipe;
 import com.willfp.eco.util.NamespacedKeyUtils;
-import org.bukkit.Bukkit;
 import org.bukkit.NamespacedKey;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -127,8 +126,8 @@ public final class Recipes {
         }
 
         if (builder.isAir()) {
-            Bukkit.getLogger().warning("Crafting recipe " + plugin.getID() + ":" + key + " consists only");
-            Bukkit.getLogger().warning("of air or invalid items! It will not be registered.");
+            plugin.getLogger().warning("Crafting recipe " + plugin.getID() + ":" + key + " consists only");
+            plugin.getLogger().warning("of air or invalid items! It will not be registered.");
             return null;
         }
 

eco-api/src/main/java/com/willfp/eco/core/registry/Registry.java

@@ -149,6 +149,10 @@ public class Registry<T extends Registrable> implements Iterable<T> {
      * @param locker The locker.
      */
     public void lock(@Nullable final Object locker) {
+        if (this.isLocked && this.locker != locker) {
+            throw new IllegalArgumentException("Registry is already locked with a different locker!");
+        }
+
         this.locker = locker;
         isLocked = true;
     }
@@ -162,6 +166,8 @@ public class Registry<T extends Registrable> implements Iterable<T> {
         if (this.locker != locker) {
             throw new IllegalArgumentException("Cannot unlock registry!");
         }
+
+        this.locker = null;
         isLocked = false;
     }
 

eco-api/src/main/java/com/willfp/eco/util/NumberUtils.java

@@ -12,6 +12,7 @@ import java.text.DecimalFormat;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Map;
+import java.util.Objects;
 import java.util.TreeMap;
 import java.util.concurrent.ThreadLocalRandom;
 
@@ -251,12 +252,15 @@ public final class NumberUtils {
                                             @Nullable final Player player,
                                             @Nullable final PlaceholderInjectable context,
                                             @NotNull final Collection<AdditionalPlayer> additionalPlayers) {
-        return Eco.get().evaluate(expression, new PlaceholderContext(
-                player,
-                null,
-                context,
-                additionalPlayers
-        ));
+        return evaluateExpression(
+                expression,
+                new PlaceholderContext(
+                        player,
+                        null,
+                        context,
+                        additionalPlayers
+                )
+        );
     }
 
     /**
@@ -268,7 +272,7 @@ public final class NumberUtils {
      * @deprecated Use {@link #evaluateExpression(String, PlaceholderContext)} instead.
      */
     @Deprecated(since = "6.56.0", forRemoval = true)
-    @SuppressWarnings("removal")
+    @SuppressWarnings({"removal", "DeprecatedIsStillUsed"})
     public static double evaluateExpression(@NotNull final String expression,
                                             @NotNull final com.willfp.eco.core.math.MathContext context) {
         return evaluateExpression(expression, context.toPlaceholderContext());
@@ -283,6 +287,22 @@ public final class NumberUtils {
      */
     public static double evaluateExpression(@NotNull final String expression,
                                             @NotNull final PlaceholderContext context) {
+        return Objects.requireNonNullElse(
+                evaluateExpressionOrNull(expression, context),
+                0.0
+        );
+    }
+
+    /**
+     * Evaluate an expression in a context.
+     *
+     * @param expression The expression.
+     * @param context    The context.
+     * @return The value of the expression, or zero if invalid.
+     */
+    @Nullable
+    public static Double evaluateExpressionOrNull(@NotNull final String expression,
+                                                  @NotNull final PlaceholderContext context) {
         return Eco.get().evaluate(expression, context);
     }
 

eco-api/src/main/java/com/willfp/eco/util/PatternUtils.java

@@ -0,0 +1,35 @@
+package com.willfp.eco.util;
+
+import com.github.benmanes.caffeine.cache.Cache;
+import com.github.benmanes.caffeine.cache.Caffeine;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.concurrent.TimeUnit;
+import java.util.regex.Pattern;
+
+/**
+ * Utilities / API methods for patterns.
+ */
+public final class PatternUtils {
+    /**
+     * Cache of compiled literal patterns.
+     */
+    private static final Cache<String, Pattern> LITERAL_PATTERN_CACHE = Caffeine.newBuilder()
+            .expireAfterAccess(1, TimeUnit.MINUTES)
+            .build();
+
+    /**
+     * Compile a literal pattern.
+     *
+     * @param pattern The pattern.
+     * @return The compiled pattern.
+     */
+    @NotNull
+    public static Pattern compileLiteral(@NotNull final String pattern) {
+        return LITERAL_PATTERN_CACHE.get(pattern, (it) -> Pattern.compile(it, Pattern.LITERAL));
+    }
+
+    private PatternUtils() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
+    }
+}

eco-api/src/main/java/com/willfp/eco/util/StringUtils.java

@@ -10,6 +10,8 @@ import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.integrations.placeholder.PlaceholderManager;
 import com.willfp.eco.core.placeholder.context.PlaceholderContext;
 import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.JoinConfiguration;
+import net.kyori.adventure.text.TextComponent;
 import net.kyori.adventure.text.format.TextDecoration;
 import net.kyori.adventure.text.serializer.gson.GsonComponentSerializer;
 import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
@@ -784,6 +786,127 @@ public final class StringUtils {
         return result.toString();
     }
 
+    /**
+     * Line wrap a list of strings while preserving formatting.
+     *
+     * @param input      The input list.
+     * @param lineLength The length of each line.
+     * @return The wrapped list.
+     */
+    @NotNull
+    public static List<String> lineWrap(@NotNull final List<String> input,
+                                        final int lineLength) {
+        return lineWrap(input, lineLength, true);
+    }
+
+    /**
+     * Line wrap a list of strings while preserving formatting.
+     *
+     * @param input          The input list.
+     * @param lineLength     The length of each line.
+     * @param preserveMargin If the string has a margin, add it to the next line.
+     * @return The wrapped list.
+     */
+    @NotNull
+    public static List<String> lineWrap(@NotNull final List<String> input,
+                                        final int lineLength,
+                                        final boolean preserveMargin) {
+        return input.stream()
+                .flatMap(line -> lineWrap(line, lineLength, preserveMargin).stream())
+                .toList();
+    }
+
+    /**
+     * Line wrap a string while preserving formatting.
+     *
+     * @param input      The input list.
+     * @param lineLength The length of each line.
+     * @return The wrapped list.
+     */
+    @NotNull
+    public static List<String> lineWrap(@NotNull final String input,
+                                        final int lineLength) {
+        return lineWrap(input, lineLength, true);
+    }
+
+    /**
+     * Line wrap a string while preserving formatting.
+     *
+     * @param input          The input string.
+     * @param lineLength     The length of each line.
+     * @param preserveMargin If the string has a margin, add it to the start of each line.
+     * @return The wrapped string.
+     */
+    @NotNull
+    public static List<String> lineWrap(@NotNull final String input,
+                                        final int lineLength,
+                                        final boolean preserveMargin) {
+        int margin = preserveMargin ? getMargin(input) : 0;
+        TextComponent space = Component.text(" ");
+
+        Component asComponent = toComponent(input);
+
+        // The component contains the text as its children, so the child components
+        // are accessed like this:
+        List<TextComponent> children = new ArrayList<>();
+
+        if (asComponent instanceof TextComponent) {
+            children.add((TextComponent) asComponent);
+        }
+
+        for (Component child : asComponent.children()) {
+            children.add((TextComponent) child);
+        }
+
+        // Start by splitting the component into individual characters.
+        List<TextComponent> letters = new ArrayList<>();
+        for (TextComponent child : children) {
+            for (char c : child.content().toCharArray()) {
+                letters.add(Component.text(c).mergeStyle(child));
+            }
+        }
+
+        List<Component> lines = new ArrayList<>();
+        List<TextComponent> currentLine = new ArrayList<>();
+        boolean isFirstLine = true;
+
+        for (TextComponent letter : letters) {
+            if (currentLine.size() > lineLength && letter.content().isBlank()) {
+                lines.add(Component.join(JoinConfiguration.noSeparators(), currentLine));
+                currentLine.clear();
+                isFirstLine = false;
+            } else {
+                // Add margin if starting a new line.
+                if (currentLine.isEmpty() && !isFirstLine) {
+                    if (preserveMargin) {
+                        for (int i = 0; i < margin; i++) {
+                            currentLine.add(space);
+                        }
+                    }
+                }
+
+                currentLine.add(letter);
+            }
+        }
+
+        // Push last line.
+        lines.add(Component.join(JoinConfiguration.noSeparators(), currentLine));
+
+        // Convert back to legacy strings.
+        return lines.stream().map(StringUtils::toLegacy)
+                .collect(Collectors.toList());
+    }
+
+    /**
+     * Get a string's margin.
+     *
+     * @param input The input string.
+     * @return The margin.
+     */
+    public static int getMargin(@NotNull final String input) {
+        return input.indexOf(input.trim());
+    }
+
     /**
      * Options for formatting.
      */

eco-api/src/main/kotlin/com/willfp/eco/core/map/DefaultMap.kt

@@ -8,7 +8,7 @@ package com.willfp.eco.core.map
  * @see ListMap
  */
 @Suppress("RedundantOverride")
-class MutableListMap<K : Any, V : Any> : ListMap<K, V>() {
+class MutableListMap<K : Any, V> : ListMap<K, V>() {
     /**
      * Override with enforced MutableList type.
      */
@@ -18,7 +18,7 @@ class MutableListMap<K : Any, V : Any> : ListMap<K, V>() {
     /**
      * Override with enforced MutableList type.
      */
-    override fun getOrDefault(key: K, defaultValue: MutableList<V>?): MutableList<V> {
+    override fun getOrDefault(key: K, defaultValue: MutableList<V>): MutableList<V> {
         return super.getOrDefault(key, defaultValue)
     }
 }
@@ -29,6 +29,12 @@ class MutableListMap<K : Any, V : Any> : ListMap<K, V>() {
 fun <K : Any, V : Any> defaultMap(defaultValue: V) =
     DefaultMap<K, V>(defaultValue)
 
+/**
+ * @see DefaultMap
+ */
+fun <K : Any, V : Any> defaultMap(defaultValue: () -> V) =
+    DefaultMap<K, V>(defaultValue())
+
 /**
  * @see ListMap
  */
@@ -38,11 +44,13 @@ fun <K : Any, V : Any> listMap() =
 /**
  * @see DefaultMap.createNestedMap
  */
-fun <K : Any, K1 : Any, V : Any> nestedMap() =
+fun <K : Any, K1 : Any, V> nestedMap() =
     DefaultMap.createNestedMap<K, K1, V>()
 
 /**
  * @see DefaultMap.createNestedListMap
  */
-fun <K : Any, K1 : Any, V : Any> nestedListMap() =
-    DefaultMap<K, MutableListMap<K1, V>>(MutableListMap())
+fun <K : Any, K1 : Any, V> nestedListMap() =
+    DefaultMap<K, MutableListMap<K1, V>>() {
+        MutableListMap()
+    }

eco-api/src/main/kotlin/com/willfp/eco/core/placeholder/Placeholder.kt

@@ -0,0 +1,14 @@
+@file:JvmName("PlaceholderExtensions")
+
+package com.willfp.eco.core.placeholder
+
+import com.willfp.eco.core.integrations.placeholder.PlaceholderManager
+import com.willfp.eco.core.placeholder.context.PlaceholderContext
+
+/** @see PlaceholderManager.translatePlaceholders */
+fun String.translatePlaceholders(context: PlaceholderContext) =
+    PlaceholderManager.translatePlaceholders(this, context)
+
+/** @see PlaceholderManager.findPlaceholdersIn */
+fun String.findPlaceholders(): List<String> =
+    PlaceholderManager.findPlaceholdersIn(this)

eco-api/src/main/kotlin/com/willfp/eco/util/ListUtils.kt

@@ -15,5 +15,5 @@ fun <T> create2DList(rows: Int, columns: Int): MutableList<MutableList<T>> =
     ListUtils.create2DList(rows, columns)
 
 /** @see ListUtils.toSingletonList */
-fun <T> T.toSingletonList(): List<T> =
+fun <T> T?.toSingletonList(): List<T> =
     ListUtils.toSingletonList(this)

eco-api/src/main/kotlin/com/willfp/eco/util/NumberUtils.kt

@@ -2,6 +2,36 @@
 
 package com.willfp.eco.util
 
+import com.willfp.eco.core.placeholder.context.PlaceholderContext
+
 /** @see NumberUtils.toNumeral */
 fun Number.toNumeral(): String =
     NumberUtils.toNumeral(this.toInt())
+
+/** @see NumberUtils.fromNumeral */
+fun String.parseNumeral(): Int =
+    NumberUtils.fromNumeral(this)
+
+/** @see NumberUtils.randInt */
+fun randInt(min: Int, max: Int) =
+    NumberUtils.randInt(min, max)
+
+/** @see NumberUtils.randFloat */
+fun randDouble(min: Double, max: Double) =
+    NumberUtils.randFloat(min, max)
+
+/** @see NumberUtils.randFloat */
+fun randFloat(min: Float, max: Float) =
+    NumberUtils.randFloat(min.toDouble(), max.toDouble()).toFloat()
+
+/** @see NumberUtils.evaluateExpression */
+fun evaluateExpression(expression: String) =
+    NumberUtils.evaluateExpression(expression)
+
+/** @see NumberUtils.evaluateExpression */
+fun evaluateExpression(expression: String, context: PlaceholderContext) =
+    NumberUtils.evaluateExpression(expression, context)
+
+/** @see NumberUtils.evaluateExpressionOrNull */
+fun evaluateExpressionOrNull(expression: String, context: PlaceholderContext) =
+    NumberUtils.evaluateExpressionOrNull(expression, context)

eco-api/src/main/kotlin/com/willfp/eco/util/StringUtils.kt

@@ -69,3 +69,15 @@ fun Any?.toNiceString(): String =
 /** @see StringUtils.replaceQuickly */
 fun String.replaceQuickly(target: String, replacement: String): String =
     StringUtils.replaceQuickly(this, target, replacement)
+
+/** @see StringUtils.lineWrap */
+fun String.lineWrap(width: Int, preserveMargin: Boolean = true): List<String> =
+    StringUtils.lineWrap(this, width, preserveMargin)
+
+/** @see StringUtils.lineWrap */
+fun List<String>.lineWrap(width: Int, preserveMargin: Boolean = true): List<String> =
+    StringUtils.lineWrap(this, width, preserveMargin)
+
+/** @see StringUtils.getMargin */
+val String.margin: Int
+    get() = StringUtils.getMargin(this)

eco-core/core-backend/build.gradle.kts

@@ -6,7 +6,7 @@ dependencies {
     implementation("org.reflections:reflections:0.9.12")
     implementation("org.objenesis:objenesis:3.2")
 
-    compileOnly("org.spigotmc:spigot-api:1.17.1-R0.1-SNAPSHOT")
+    compileOnly("org.spigotmc:spigot-api:1.20-R0.1-SNAPSHOT")
     compileOnly("me.clip:placeholderapi:2.10.10")
     compileOnly("net.kyori:adventure-text-minimessage:4.10.0")
     compileOnly("net.kyori:adventure-platform-bukkit:4.1.0")

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/command/DelegatedBukkitCommand.kt

@@ -8,10 +8,12 @@ import org.bukkit.command.TabCompleter
 
 class DelegatedBukkitCommand(
     private val delegate: EcoPluginCommand
-) : Command(delegate.name), TabCompleter, PluginIdentifiableCommand {
-    private var _aliases: List<String>? = null
-    private var _description: String? = null
-
+) : Command(
+    delegate.name,
+    delegate.description ?: "",
+    "/${delegate.name}",
+    delegate.aliases
+), TabCompleter, PluginIdentifiableCommand {
     override fun execute(sender: CommandSender, label: String, args: Array<out String>?): Boolean {
         return delegate.onCommand(sender, this, label, args)
     }
@@ -36,16 +38,4 @@ class DelegatedBukkitCommand(
 
     override fun getPlugin() = delegate.plugin
     override fun getPermission() = delegate.permission
-    override fun getDescription() = _description ?: delegate.description ?: ""
-    override fun getAliases(): List<String> = _aliases ?: delegate.aliases
-
-    override fun setDescription(description: String): Command {
-        this._description = description
-        return this
-    }
-
-    override fun setAliases(aliases: List<String>): Command {
-        this._aliases = aliases
-        return this
-    }
 }

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/command/EcoPluginCommand.kt

@@ -7,7 +7,7 @@ import com.willfp.eco.core.command.PluginCommandBase
 import org.bukkit.Bukkit
 
 class EcoPluginCommand(
-    parentDelegate: CommandBase,
+    private val parentDelegate: PluginCommandBase,
     plugin: EcoPlugin,
     name: String,
     permission: String,
@@ -39,6 +39,9 @@ class EcoPluginCommand(
 
         Eco.get().syncCommands()
     }
+
+    override fun getAliases(): List<String> = parentDelegate.aliases
+    override fun getDescription(): String? = parentDelegate.description
 }
 
 class EcoSubcommand(

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/command/HandledCommand.kt

@@ -106,7 +106,7 @@ abstract class HandledCommand(
         }
 
         try {
-            notifyFalse(!isPlayersOnly || sender is Player, LangYml.KEY_NOT_PLAYER)
+            notifyFalse(!isPlayersOnly || sender is Player, "not-player")
 
             onExecute(sender, args)
 

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/config/ConfigUtils.kt

@@ -30,6 +30,8 @@ internal fun Any?.constrainConfigTypes(type: ConfigType): Any? = when (this) {
             this.toMutableList()
         }
     }
+
+    is Float -> this.toDouble() // Should prevent !!float from being written
     else -> this
 }
 
@@ -110,6 +112,7 @@ private object YamlConfigTypeHandler : ConfigTypeHandler(ConfigType.YAML) {
         representer.defaultFlowStyle = DumperOptions.FlowStyle.BLOCK
 
         return Yaml(
+            @Suppress("DEPRECATION")
             YamlConstructor(),
             representer,
             yamlOptions,

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/config/EcoConfig.kt

@@ -7,7 +7,6 @@ import com.willfp.eco.core.placeholder.context.PlaceholderContext
 import com.willfp.eco.internal.fast.listView
 import com.willfp.eco.util.StringUtils
 import org.bukkit.configuration.file.YamlConfiguration
-import java.util.Objects
 import java.util.concurrent.ConcurrentHashMap
 
 @Suppress("UNCHECKED_CAST")
@@ -17,11 +16,16 @@ open class EcoConfig(
     private val values = ConcurrentHashMap<String, Any?>()
 
     @Transient
-    var injections = ConcurrentHashMap<String, InjectablePlaceholder>()
+    private val injections = mutableMapOf<String, InjectablePlaceholder>()
 
-    fun init(values: Map<String, Any?>) {
+    @Transient
+    private var injectionHash = 0
+
+    fun init(values: Map<String, Any?>, injections: Map<String, InjectablePlaceholder>) {
         this.values.clear()
         this.values.putAll(values.normalizeToConfig(this.type))
+
+        this.addInjectablePlaceholder(injections.values)
     }
 
     override fun toPlaintext(): String {
@@ -180,6 +184,7 @@ open class EcoConfig(
     override fun addInjectablePlaceholder(placeholders: Iterable<InjectablePlaceholder>) {
         for (placeholder in placeholders) {
             injections[placeholder.pattern.pattern()] = placeholder
+            injectionHash = injectionHash xor placeholder.hashCode()
         }
     }
 
@@ -189,6 +194,7 @@ open class EcoConfig(
 
     override fun clearInjectedPlaceholders() {
         injections.clear()
+        injectionHash = 0 // Reset the hash
     }
 
     override fun toMap(): MutableMap<String, Any?> {
@@ -235,22 +241,14 @@ open class EcoConfig(
             return false
         }
 
-        if (configType != other.configType) {
-            return false
-        }
-
-        if (values != other.values) {
-            return false
-        }
-
-        if (injections != other.injections) {
-            return false
-        }
-
-        return true
+        // Hey! Don't care. This works.
+        return this.hashCode() == other.hashCode()
     }
 
     override fun hashCode(): Int {
-        return Objects.hash(values, configType, injections)
+        // hashCode() has to compute extremely quickly, so we're using bitwise, because why not?
+        // Fucking filthy to use identityHashCode here, but it should be extremely fast
+        val identityHash = System.identityHashCode(this)
+        return (identityHash shl 5) - (identityHash xor configType.hashCode()) + injectionHash
     }
 }

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/config/EcoConfigSection.kt

@@ -10,7 +10,6 @@ class EcoConfigSection(
     injections: Map<String, InjectablePlaceholder> = emptyMap()
 ) : EcoConfig(type) {
     init {
-        this.init(values)
-        this.injections = ConcurrentHashMap(injections)
+        this.init(values, injections)
     }
 }

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/config/EcoLoadableConfig.kt

@@ -91,7 +91,7 @@ open class EcoLoadableConfig(
     protected fun init(reader: Reader) {
         val string = reader.readToString()
         makeHeader(string)
-        super.init(type.toMap(string))
+        super.init(type.toMap(string), emptyMap())
     }
 
     fun init(file: File) {

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/config/EcoRepresenter.kt

@@ -1,12 +1,12 @@
 package com.willfp.eco.internal.config
 
 import com.willfp.eco.core.config.interfaces.Config
+import org.yaml.snakeyaml.DumperOptions
 import org.yaml.snakeyaml.nodes.Node
 import org.yaml.snakeyaml.representer.Represent
 import org.yaml.snakeyaml.representer.Representer
 
-@Suppress("DEPRECATION")
-class EcoRepresenter : Representer() {
+class EcoRepresenter : Representer(DumperOptions()) {
     init {
         multiRepresenters[Config::class.java] = RepresentConfig(multiRepresenters[Map::class.java]!!)
     }

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/config/EcoUpdatableConfig.kt

@@ -50,7 +50,7 @@ open class EcoUpdatableConfig(
             val reader = BufferedReader(InputStreamReader(newIn, StandardCharsets.UTF_8))
 
             val config = EcoConfigSection(type, emptyMap())
-            config.init(type.toMap(reader.readToString()))
+            config.init(type.toMap(reader.readToString()), emptyMap())
             return config
         }
 

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/events/EcoEventManager.kt

@@ -20,7 +20,15 @@ private val listeners = mutableMapOf<PacketPriority, MutableList<RegisteredPacke
 fun PacketEvent.handleSend() {
     for (priority in PacketPriority.values()) {
         for (listener in listeners[priority] ?: continue) {
-            listener.listener.onSend(this)
+            try {
+                listener.listener.onSend(this)
+            } catch (e: Exception) {
+                listener.plugin.logger.warning(
+                    "Exception in packet listener ${listener.listener.javaClass.name}" +
+                            " for packet ${packet.handle.javaClass.name}!"
+                )
+                e.printStackTrace()
+            }
         }
     }
 }
@@ -28,7 +36,15 @@ fun PacketEvent.handleSend() {
 fun PacketEvent.handleReceive() {
     for (priority in PacketPriority.values()) {
         for (listener in listeners[priority] ?: continue) {
-            listener.listener.onReceive(this)
+            try {
+                listener.listener.onReceive(this)
+            } catch (e: Exception) {
+                listener.plugin.logger.warning(
+                    "Exception in packet listener ${listener.listener.javaClass.name}" +
+                            " for packet ${packet.handle.javaClass.name}!"
+                )
+                e.printStackTrace()
+            }
         }
     }
 }

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/extensions/EcoExtensionLoader.kt

@@ -59,7 +59,7 @@ class EcoExtensionLoader(
         val pluginVersion = Version(extensionYml.getStringOrNull("plugin-version") ?: "0.0.0")
         val pluginName = extensionYml.getStringOrNull("plugin")
 
-        if (pluginName != null && pluginName.equals(this.plugin.description.name, ignoreCase = true)) {
+        if (pluginName != null && !pluginName.equals(this.plugin.description.name, ignoreCase = true)) {
             throw ExtensionLoadException("${extensionJar.name} is only compatible with $pluginName!")
         }
 

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/gui/slot/EcoSlot.kt

@@ -34,4 +34,6 @@ open class EcoSlot(
     }
 
     override fun getActionableSlot(player: Player, menu: Menu): EcoSlot = this
+
+    override fun shouldRenderOnClick(clickType: ClickType) = !handlers[clickType].isNullOrEmpty()
 }

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/gui/slot/EcoSlotBuilder.kt

@@ -6,6 +6,7 @@ import com.willfp.eco.core.gui.slot.functional.CaptiveFilter
 import com.willfp.eco.core.gui.slot.functional.SlotHandler
 import com.willfp.eco.core.gui.slot.functional.SlotProvider
 import com.willfp.eco.core.gui.slot.functional.SlotUpdater
+import com.willfp.eco.core.map.listMap
 import org.bukkit.entity.Player
 import org.bukkit.event.inventory.ClickType
 import java.util.function.Predicate
@@ -15,14 +16,14 @@ class EcoSlotBuilder(private val provider: SlotProvider) : SlotBuilder {
     private var captiveFromEmpty = false
     private var updater: SlotUpdater = SlotUpdater { player, menu, _ -> provider.provide(player, menu) }
 
-    private val handlers = mutableMapOf<ClickType, MutableList<SlotHandler>>()
+    private val handlers = listMap<ClickType, SlotHandler>()
 
     private var captiveFilter =
         CaptiveFilter { _, _, _ -> true }
     private var notCaptiveFor: (Player) -> Boolean = { _ -> false}
 
     override fun onClick(type: ClickType, action: SlotHandler): SlotBuilder {
-        handlers.computeIfAbsent(type) { mutableListOf() } += action
+        handlers[type] += action
         return this
     }
 

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/items/ArgParserHead.kt

@@ -0,0 +1,57 @@
+package com.willfp.eco.internal.items
+
+import com.willfp.eco.core.items.args.LookupArgParser
+import org.bukkit.Bukkit
+import org.bukkit.inventory.ItemStack
+import org.bukkit.inventory.meta.ItemMeta
+import org.bukkit.inventory.meta.SkullMeta
+import java.util.function.Predicate
+
+object ArgParserHead : LookupArgParser {
+    override fun parseArguments(args: Array<out String>, meta: ItemMeta): Predicate<ItemStack>? {
+        if (meta !is SkullMeta) {
+            return null
+        }
+
+        var playerName: String? = null
+
+        for (arg in args) {
+            val argSplit = arg.split(":")
+            if (!argSplit[0].equals("head", ignoreCase = true)) {
+                continue
+            }
+            if (argSplit.size < 2) {
+                continue
+            }
+            playerName = argSplit[1]
+        }
+
+        playerName ?: return null
+
+        @Suppress("DEPRECATION")
+        val player = Bukkit.getOfflinePlayer(playerName)
+
+        meta.owningPlayer = player
+
+        return Predicate {
+            val testMeta = it.itemMeta as? SkullMeta ?: return@Predicate false
+            testMeta.owningPlayer?.uniqueId == player.uniqueId
+        }
+    }
+
+    override fun serializeBack(meta: ItemMeta): String? {
+        if (meta !is SkullMeta) {
+            return null
+        }
+
+        if (meta.owningPlayer == null) {
+            return null
+        }
+
+        if (meta.owningPlayer!!.name.equals("null", true) || meta.owningPlayer!!.name == null) {
+            return null
+        }
+
+        return "head:${meta.owningPlayer?.name}"
+    }
+}

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/items/ArgParserTrim.kt

@@ -0,0 +1,50 @@
+package com.willfp.eco.internal.items
+
+import com.willfp.eco.core.items.args.LookupArgParser
+import org.bukkit.Color
+import org.bukkit.NamespacedKey
+import org.bukkit.Registry
+import org.bukkit.inventory.ItemStack
+import org.bukkit.inventory.meta.ArmorMeta
+import org.bukkit.inventory.meta.ItemMeta
+import org.bukkit.inventory.meta.LeatherArmorMeta
+import org.bukkit.inventory.meta.trim.ArmorTrim
+import org.bukkit.inventory.meta.trim.TrimMaterial
+import org.bukkit.inventory.meta.trim.TrimPattern
+import java.util.function.Predicate
+
+object ArgParserTrim : LookupArgParser {
+    override fun parseArguments(args: Array<out String>, meta: ItemMeta): Predicate<ItemStack>? {
+        if (meta !is ArmorMeta) return null
+
+        var material: TrimMaterial? = null
+        var pattern: TrimPattern? = null
+
+        for (arg in args) {
+            val argSplit = arg.split(":")
+            if (!argSplit[0].equals("trim", ignoreCase = true)) {
+                continue
+            }
+            material = Registry.TRIM_MATERIAL.get(NamespacedKey.minecraft(argSplit.getOrElse(1) {""}))
+            pattern = Registry.TRIM_PATTERN.get(NamespacedKey.minecraft(argSplit.getOrElse(2) {""}))
+        }
+
+        if (material == null || pattern == null) return null
+
+
+        meta.trim = ArmorTrim(material, pattern)
+
+        return Predicate {
+            val testMeta = it.itemMeta as? ArmorMeta ?: return@Predicate false
+            val trim = testMeta.trim ?: return@Predicate false
+            return@Predicate trim.material == material
+                    && trim.pattern == pattern
+        }
+    }
+
+    override fun serializeBack(meta: ItemMeta): String? {
+        val trim = (meta as? ArmorMeta)?.trim ?: return null
+
+        return "trim:${trim.material.key.key.lowercase()}:${trim.pattern.key.key.lowercase()}"
+    }
+}

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/logging/NOOPLogger.kt

@@ -0,0 +1,10 @@
+package com.willfp.eco.internal.logging
+
+import java.util.logging.LogRecord
+import java.util.logging.Logger
+
+object NOOPLogger : Logger("eco_noop", null as String?) {
+    override fun log(record: LogRecord?) {
+        return
+    }
+}

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/placeholder/PlaceholderLookup.kt

@@ -4,8 +4,23 @@ import com.willfp.eco.core.EcoPlugin
 import com.willfp.eco.core.integrations.placeholder.PlaceholderManager
 import com.willfp.eco.core.placeholder.InjectablePlaceholder
 import com.willfp.eco.core.placeholder.Placeholder
+import com.willfp.eco.core.placeholder.context.PlaceholderContext
+import com.willfp.eco.core.placeholder.templates.SimpleInjectablePlaceholder
 import java.util.regex.Pattern
 
+/*
+
+A set of global placeholders that are always available.
+
+ */
+private val globalPlaceholders = setOf<Placeholder>(
+    object : SimpleInjectablePlaceholder("player") {
+        override fun getValue(args: String, context: PlaceholderContext): String? {
+            return context.player?.name
+        }
+    },
+)
+
 class PlaceholderLookup(
     val args: String,
     val plugin: EcoPlugin?,
@@ -29,6 +44,12 @@ class PlaceholderLookup(
             }
         }
 
+        for (placeholder in globalPlaceholders) {
+            if (placeholder.matches(this)) {
+                return placeholder
+            }
+        }
+
         return null
     }
 

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/placeholder/PlaceholderParser.kt

@@ -7,7 +7,6 @@ import com.willfp.eco.core.placeholder.InjectablePlaceholder
 import com.willfp.eco.core.placeholder.Placeholder
 import com.willfp.eco.core.placeholder.context.PlaceholderContext
 import com.willfp.eco.util.StringUtils
-import java.util.Optional
 import java.util.concurrent.TimeUnit
 
 /*
@@ -23,7 +22,7 @@ class PlaceholderParser {
 
     private val placeholderLookupCache = Caffeine.newBuilder()
         .expireAfterWrite(1, TimeUnit.SECONDS)
-        .build<PlaceholderLookup, Optional<Placeholder>>()
+        .build<PlaceholderLookup, Placeholder?>()
 
     fun translatePlacholders(text: String, context: PlaceholderContext): String {
         return translatePlacholders(text, context, context.injectableContext.placeholderInjections)
@@ -122,10 +121,10 @@ class PlaceholderParser {
         val lookup = PlaceholderLookup(args, plugin, injections)
 
         val placeholder = placeholderLookupCache.get(lookup) {
-            Optional.ofNullable(it.findMatchingPlaceholder())
-        }.orElse(null) ?: return null
+            it.findMatchingPlaceholder()
+        }
 
-        return placeholder.getValue(args, context)
+        return placeholder?.getValue(args, context)
     }
 
     private fun translateEcoPlaceholdersIn(

eco-core/core-nms/nms-common/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/common/ai/CustomGoals.kt

@@ -2,6 +2,7 @@ package com.willfp.eco.internal.spigot.proxy.common.ai
 
 import com.willfp.eco.core.entities.ai.CustomGoal
 import com.willfp.eco.core.entities.ai.GoalFlag
+import com.willfp.eco.internal.spigot.proxy.common.toBukkitEntity
 import net.minecraft.world.entity.PathfinderMob
 import net.minecraft.world.entity.ai.goal.Goal
 import java.util.EnumSet
@@ -51,7 +52,7 @@ private class NMSCustomGoal<T : org.bukkit.entity.Mob>(
 ) : Goal() {
     init {
         @Suppress("UNCHECKED_CAST")
-        customEntityGoal.initialize(entity.bukkitMob as T)
+        customEntityGoal.initialize(entity.toBukkitEntity() as T)
         this.setFlags(EnumSet.copyOf(customEntityGoal.flags.toNMSFlags()))
     }
 

eco-core/core-nms/v1_20_R1/build.gradle.kts

@@ -0,0 +1,39 @@
+plugins {
+    id("io.papermc.paperweight.userdev")
+}
+
+group = "com.willfp"
+version = rootProject.version
+
+dependencies {
+    implementation(project(":eco-core:core-nms:nms-common"))
+    paperweight.paperDevBundle("1.20-R0.1-SNAPSHOT")
+
+    implementation("net.kyori:adventure-text-minimessage:4.11.0") {
+        version {
+            strictly("4.11.0")
+        }
+        exclude(group = "net.kyori", module = "adventure-api")
+    }
+}
+
+tasks {
+    build {
+        dependsOn(reobfJar)
+    }
+
+    reobfJar {
+        mustRunAfter(shadowJar)
+    }
+
+    shadowJar {
+        relocate(
+            "com.willfp.eco.internal.spigot.proxy.common",
+            "com.willfp.eco.internal.spigot.proxy.v1_20_R1.common"
+        )
+        relocate(
+            "net.kyori.adventure.text.minimessage",
+            "com.willfp.eco.internal.spigot.proxy.v1_20_R1.minimessage"
+        )
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/BukkitCommands.kt

@@ -0,0 +1,35 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.command.PluginCommandBase
+import com.willfp.eco.internal.spigot.proxy.BukkitCommandsProxy
+import org.bukkit.Bukkit
+import org.bukkit.command.Command
+import org.bukkit.command.SimpleCommandMap
+import org.bukkit.craftbukkit.v1_20_R1.CraftServer
+import java.lang.reflect.Field
+
+class BukkitCommands : BukkitCommandsProxy {
+    private val knownCommandsField: Field by lazy {
+        SimpleCommandMap::class.java.getDeclaredField("knownCommands")
+            .apply {
+                isAccessible = true
+            }
+    }
+
+    @Suppress("UNCHECKED_CAST")
+    private val knownCommands: MutableMap<String, Command>
+        get() = knownCommandsField.get(getCommandMap()) as MutableMap<String, Command>
+
+    override fun getCommandMap(): SimpleCommandMap {
+        return (Bukkit.getServer() as CraftServer).commandMap
+    }
+
+    override fun syncCommands() {
+        (Bukkit.getServer() as CraftServer).syncCommands()
+    }
+
+    override fun unregisterCommand(command: PluginCommandBase) {
+        knownCommands.remove(command.name)
+        knownCommands.remove("${command.plugin.name.lowercase()}:${command.name}")
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/CommonsInitializer.kt

@@ -0,0 +1,159 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.EcoPlugin
+import com.willfp.eco.internal.spigot.proxy.CommonsInitializerProxy
+import com.willfp.eco.internal.spigot.proxy.common.CommonsProvider
+import com.willfp.eco.internal.spigot.proxy.common.packet.PacketInjectorListener
+import com.willfp.eco.internal.spigot.proxy.common.toResourceLocation
+import net.minecraft.core.registries.BuiltInRegistries
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.nbt.Tag
+import net.minecraft.resources.ResourceLocation
+import net.minecraft.server.level.ServerPlayer
+import net.minecraft.world.entity.PathfinderMob
+import net.minecraft.world.item.Item
+import org.bukkit.Bukkit
+import org.bukkit.Material
+import org.bukkit.NamespacedKey
+import org.bukkit.craftbukkit.v1_20_R1.CraftServer
+import org.bukkit.craftbukkit.v1_20_R1.entity.CraftEntity
+import org.bukkit.craftbukkit.v1_20_R1.entity.CraftMob
+import org.bukkit.craftbukkit.v1_20_R1.entity.CraftPlayer
+import org.bukkit.craftbukkit.v1_20_R1.inventory.CraftItemStack
+import org.bukkit.craftbukkit.v1_20_R1.persistence.CraftPersistentDataContainer
+import org.bukkit.craftbukkit.v1_20_R1.persistence.CraftPersistentDataTypeRegistry
+import org.bukkit.craftbukkit.v1_20_R1.util.CraftMagicNumbers
+import org.bukkit.craftbukkit.v1_20_R1.util.CraftNamespacedKey
+import org.bukkit.entity.LivingEntity
+import org.bukkit.entity.Mob
+import org.bukkit.entity.Player
+import org.bukkit.inventory.ItemStack
+import org.bukkit.persistence.PersistentDataContainer
+import java.lang.reflect.Field
+
+class CommonsInitializer : CommonsInitializerProxy {
+    override fun init(plugin: EcoPlugin) {
+        CommonsProvider.setIfNeeded(CommonsProviderImpl)
+        plugin.onEnable {
+            plugin.eventManager.registerListener(PacketInjectorListener)
+        }
+    }
+
+    object CommonsProviderImpl : CommonsProvider {
+        private val cisHandle: Field = CraftItemStack::class.java.getDeclaredField("handle").apply {
+            isAccessible = true
+        }
+
+        private val pdcRegsitry = Class.forName("org.bukkit.craftbukkit.v1_20_R1.inventory.CraftMetaItem")
+            .getDeclaredField("DATA_TYPE_REGISTRY")
+            .apply { isAccessible = true }
+            .get(null) as CraftPersistentDataTypeRegistry
+
+        override val nbtTagString = CraftMagicNumbers.NBT.TAG_STRING
+
+        override fun toPathfinderMob(mob: Mob): PathfinderMob? {
+            val craft = mob as? CraftMob ?: return null
+            return craft.handle as? PathfinderMob
+        }
+
+        override fun toResourceLocation(namespacedKey: NamespacedKey): ResourceLocation =
+            CraftNamespacedKey.toMinecraft(namespacedKey)
+
+        override fun asNMSStack(itemStack: ItemStack): net.minecraft.world.item.ItemStack {
+            return if (itemStack !is CraftItemStack) {
+                CraftItemStack.asNMSCopy(itemStack)
+            } else {
+                cisHandle[itemStack] as net.minecraft.world.item.ItemStack? ?: CraftItemStack.asNMSCopy(itemStack)
+            }
+        }
+
+        override fun asBukkitStack(itemStack: net.minecraft.world.item.ItemStack): ItemStack {
+            return CraftItemStack.asCraftMirror(itemStack)
+        }
+
+        override fun mergeIfNeeded(itemStack: ItemStack, nmsStack: net.minecraft.world.item.ItemStack) {
+            if (itemStack !is CraftItemStack) {
+                itemStack.itemMeta = CraftItemStack.asCraftMirror(nmsStack).itemMeta
+            }
+        }
+
+        override fun toBukkitEntity(entity: net.minecraft.world.entity.LivingEntity): LivingEntity? =
+            CraftEntity.getEntity(Bukkit.getServer() as CraftServer, entity) as? LivingEntity
+
+        override fun makePdc(tag: CompoundTag, base: Boolean): PersistentDataContainer {
+            fun emptyPdc(): CraftPersistentDataContainer = CraftPersistentDataContainer(pdcRegsitry)
+
+            fun CompoundTag?.toPdc(): PersistentDataContainer {
+                val pdc = emptyPdc()
+                this ?: return pdc
+                val keys = this.allKeys
+                for (key in keys) {
+                    pdc.put(key, this[key])
+                }
+
+                return pdc
+            }
+
+            return if (base) {
+                tag.toPdc()
+            } else {
+                if (tag.contains("PublicBukkitValues")) {
+                    tag.getCompound("PublicBukkitValues").toPdc()
+                } else {
+                    emptyPdc()
+                }
+            }
+        }
+
+        override fun setPdc(
+            tag: CompoundTag,
+            pdc: PersistentDataContainer?,
+            item: net.minecraft.world.item.ItemStack?
+        ) {
+            fun CraftPersistentDataContainer.toTag(): CompoundTag {
+                val compound = CompoundTag()
+                val rawPublicMap: Map<String, Tag> = this.raw
+                for ((key, value) in rawPublicMap) {
+                    compound.put(key, value)
+                }
+
+                return compound
+            }
+
+            val container = when (pdc) {
+                is CraftPersistentDataContainer? -> pdc
+                else -> null
+            }
+
+            if (item != null) {
+                if (container != null && !container.isEmpty) {
+                    for (key in tag.allKeys.toSet()) {
+                        tag.remove(key)
+                    }
+
+                    tag.merge(container.toTag())
+                } else {
+                    item.tag = null
+                }
+            } else {
+                if (container != null && !container.isEmpty) {
+                    tag.put("PublicBukkitValues", container.toTag())
+                } else {
+                    tag.remove("PublicBukkitValues")
+                }
+            }
+        }
+
+        override fun materialToItem(material: Material): Item =
+            BuiltInRegistries.ITEM.getOptional(material.key.toResourceLocation())
+                .orElseThrow { IllegalArgumentException("Material is not item!") }
+
+        override fun itemToMaterial(item: Item) =
+            Material.getMaterial(BuiltInRegistries.ITEM.getKey(item).path.uppercase())
+                ?: throw IllegalArgumentException("Invalid material!")
+
+        override fun toNMS(player: Player): ServerPlayer {
+            return (player as CraftPlayer).handle
+        }
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/DummyEntityFactory.kt

@@ -0,0 +1,16 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.internal.entities.EcoDummyEntity
+import com.willfp.eco.internal.spigot.proxy.DummyEntityFactoryProxy
+import org.bukkit.Location
+import org.bukkit.craftbukkit.v1_20_R1.CraftWorld
+import org.bukkit.entity.Entity
+import org.bukkit.entity.EntityType
+
+class DummyEntityFactory : DummyEntityFactoryProxy {
+    override fun createDummyEntity(location: Location): Entity {
+        val world = location.world as CraftWorld
+        @Suppress("UsePropertyAccessSyntax")
+        return EcoDummyEntity(world.createEntity(location, EntityType.ZOMBIE.entityClass).getBukkitEntity())
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/EntityControllerFactory.kt

@@ -0,0 +1,12 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.entities.ai.EntityController
+import com.willfp.eco.internal.spigot.proxy.EntityControllerFactoryProxy
+import com.willfp.eco.internal.spigot.proxy.v1_20_R1.entity.EcoEntityController
+import org.bukkit.entity.Mob
+
+class EntityControllerFactory : EntityControllerFactoryProxy {
+    override fun <T : Mob> createEntityController(entity: T): EntityController<T> {
+        return EcoEntityController(entity)
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/ExtendedPersistentDataContainerFactory.kt

@@ -0,0 +1,82 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.data.ExtendedPersistentDataContainer
+import com.willfp.eco.internal.spigot.proxy.ExtendedPersistentDataContainerFactoryProxy
+import net.minecraft.nbt.Tag
+import org.bukkit.Material
+import org.bukkit.craftbukkit.v1_20_R1.inventory.CraftItemStack
+import org.bukkit.craftbukkit.v1_20_R1.persistence.CraftPersistentDataContainer
+import org.bukkit.craftbukkit.v1_20_R1.persistence.CraftPersistentDataTypeRegistry
+import org.bukkit.inventory.ItemStack
+import org.bukkit.persistence.PersistentDataContainer
+import org.bukkit.persistence.PersistentDataType
+
+class ExtendedPersistentDataContainerFactory : ExtendedPersistentDataContainerFactoryProxy {
+    private val registry: CraftPersistentDataTypeRegistry
+
+    init {
+        /*
+         Can't grab actual instance since it's in CraftMetaItem (which is package-private)
+         And getting it would mean more janky reflection
+         */
+        val item = CraftItemStack.asCraftCopy(ItemStack(Material.STONE))
+        val pdc = item.itemMeta!!.persistentDataContainer
+        this.registry = CraftPersistentDataContainer::class.java.getDeclaredField("registry")
+            .apply { isAccessible = true }.get(pdc) as CraftPersistentDataTypeRegistry
+    }
+
+    override fun adapt(pdc: PersistentDataContainer): ExtendedPersistentDataContainer {
+        return when (pdc) {
+            is CraftPersistentDataContainer -> EcoPersistentDataContainer(pdc)
+            else -> throw IllegalArgumentException("Custom PDC instance ims not supported!")
+        }
+    }
+
+    override fun newPdc(): PersistentDataContainer {
+        return CraftPersistentDataContainer(registry)
+    }
+
+    inner class EcoPersistentDataContainer(
+        private val handle: CraftPersistentDataContainer
+    ) : ExtendedPersistentDataContainer {
+        @Suppress("UNCHECKED_CAST")
+        private val customDataTags: MutableMap<String, Tag> =
+            CraftPersistentDataContainer::class.java.getDeclaredField("customDataTags")
+                .apply { isAccessible = true }.get(handle) as MutableMap<String, Tag>
+
+        override fun <T : Any, Z : Any> set(key: String, dataType: PersistentDataType<T, Z>, value: Z) {
+            customDataTags[key] =
+                registry.wrap(dataType.primitiveType, dataType.toPrimitive(value, handle.adapterContext))
+        }
+
+        override fun <T : Any, Z : Any> has(key: String, dataType: PersistentDataType<T, Z>): Boolean {
+            val value = customDataTags[key] ?: return false
+            return registry.isInstanceOf(dataType.primitiveType, value)
+        }
+
+        override fun <T : Any, Z : Any> get(key: String, dataType: PersistentDataType<T, Z>): Z? {
+            val value = customDataTags[key] ?: return null
+            return dataType.fromPrimitive(registry.extract(dataType.primitiveType, value), handle.adapterContext)
+        }
+
+        override fun <T : Any, Z : Any> getOrDefault(
+            key: String,
+            dataType: PersistentDataType<T, Z>,
+            defaultValue: Z
+        ): Z {
+            return get(key, dataType) ?: defaultValue
+        }
+
+        override fun remove(key: String) {
+            customDataTags.remove(key)
+        }
+
+        override fun getAllKeys(): MutableSet<String> {
+            return customDataTags.keys
+        }
+
+        override fun getBase(): PersistentDataContainer {
+            return handle
+        }
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/FastItemStackFactory.kt

@@ -0,0 +1,12 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.fast.FastItemStack
+import com.willfp.eco.internal.spigot.proxy.FastItemStackFactoryProxy
+import com.willfp.eco.internal.spigot.proxy.common.item.EcoFastItemStack
+import org.bukkit.inventory.ItemStack
+
+class FastItemStackFactory : FastItemStackFactoryProxy {
+    override fun create(itemStack: ItemStack): FastItemStack {
+        return EcoFastItemStack(itemStack)
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/MiniMessageTranslator.kt

@@ -0,0 +1,33 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.display.Display
+import com.willfp.eco.internal.spigot.proxy.MiniMessageTranslatorProxy
+import com.willfp.eco.util.toLegacy
+import net.kyori.adventure.text.minimessage.MiniMessage
+
+class MiniMessageTranslator : MiniMessageTranslatorProxy {
+    override fun format(message: String): String {
+        var mut = message
+
+        val startsWithPrefix = mut.startsWith(Display.PREFIX)
+        if (startsWithPrefix) {
+            mut = mut.substring(2)
+        }
+
+        mut = mut.replace('§', '&')
+
+        val miniMessage = runCatching {
+            MiniMessage.miniMessage().deserialize(
+                mut
+            ).toLegacy()
+        }.getOrNull() ?: mut
+
+        mut = if (startsWithPrefix) {
+            Display.PREFIX + miniMessage
+        } else {
+            miniMessage
+        }
+
+        return mut
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/PacketHandler.kt

@@ -0,0 +1,46 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.EcoPlugin
+import com.willfp.eco.core.packet.PacketListener
+import com.willfp.eco.internal.spigot.proxy.PacketHandlerProxy
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketAutoRecipe
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketHeldItemSlot
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketOpenWindowMerchant
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketSetCreativeSlot
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketSetSlot
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketWindowItems
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.frame.clearFrames
+import net.minecraft.network.protocol.Packet
+import org.bukkit.craftbukkit.v1_20_R1.entity.CraftPlayer
+import org.bukkit.entity.Player
+
+class PacketHandler : PacketHandlerProxy {
+    override fun sendPacket(player: Player, packet: com.willfp.eco.core.packet.Packet) {
+        if (player !is CraftPlayer) {
+            return
+        }
+
+        val handle = packet.handle
+
+        if (handle !is Packet<*>) {
+            return
+        }
+
+        player.handle.connection.send(handle)
+    }
+
+    override fun clearDisplayFrames() {
+        clearFrames()
+    }
+
+    override fun getPacketListeners(plugin: EcoPlugin): List<PacketListener> {
+        return listOf(
+            PacketAutoRecipe(plugin),
+            PacketHeldItemSlot,
+            PacketOpenWindowMerchant,
+            PacketSetCreativeSlot,
+            PacketSetSlot,
+            PacketWindowItems(plugin)
+        )
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/SNBTConverter.kt

@@ -0,0 +1,52 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.items.TestableItem
+import com.willfp.eco.core.recipe.parts.EmptyTestableItem
+import com.willfp.eco.internal.spigot.proxy.SNBTConverterProxy
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.nbt.SnbtPrinterTagVisitor
+import net.minecraft.nbt.TagParser
+import org.bukkit.craftbukkit.v1_20_R1.inventory.CraftItemStack
+import org.bukkit.inventory.ItemStack
+
+class SNBTConverter : SNBTConverterProxy {
+    override fun fromSNBT(snbt: String): ItemStack? {
+        val nbt = runCatching { TagParser.parseTag(snbt) }.getOrNull() ?: return null
+        val nms = net.minecraft.world.item.ItemStack.of(nbt)
+        return CraftItemStack.asBukkitCopy(nms)
+    }
+
+    override fun toSNBT(itemStack: ItemStack): String {
+        val nms = CraftItemStack.asNMSCopy(itemStack)
+        return SnbtPrinterTagVisitor().visit(nms.save(CompoundTag()))
+    }
+
+    override fun makeSNBTTestable(snbt: String): TestableItem {
+        val nbt = runCatching { TagParser.parseTag(snbt) }.getOrNull() ?: return EmptyTestableItem()
+        val nms = net.minecraft.world.item.ItemStack.of(nbt)
+        if (nms == net.minecraft.world.item.ItemStack.EMPTY) {
+            return EmptyTestableItem()
+        }
+
+        nbt.remove("Count")
+        return SNBTTestableItem(CraftItemStack.asBukkitCopy(nms), nbt)
+    }
+
+    class SNBTTestableItem(
+        private val item: ItemStack,
+        private val tag: CompoundTag
+    ) : TestableItem {
+        override fun matches(itemStack: ItemStack?): Boolean {
+            if (itemStack == null) {
+                return false
+            }
+
+            val nms = CraftItemStack.asNMSCopy(itemStack)
+            val nmsTag = nms.save(CompoundTag())
+            nmsTag.remove("Count")
+            return tag.copy().merge(nmsTag) == nmsTag && itemStack.type == item.type
+        }
+
+        override fun getItem(): ItemStack = item
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/Skull.kt

@@ -0,0 +1,18 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.internal.spigot.proxy.SkullProxy
+import com.willfp.eco.internal.spigot.proxy.common.texture
+import org.bukkit.inventory.meta.SkullMeta
+
+class Skull : SkullProxy {
+    override fun setSkullTexture(
+        meta: SkullMeta,
+        base64: String
+    ) {
+        meta.texture = base64
+    }
+
+    override fun getSkullTexture(
+        meta: SkullMeta
+    ): String? = meta.texture
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/TPS.kt

@@ -0,0 +1,11 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.internal.spigot.proxy.TPSProxy
+import org.bukkit.Bukkit
+import org.bukkit.craftbukkit.v1_20_R1.CraftServer
+
+class TPS : TPSProxy {
+    override fun getTPS(): Double {
+        return (Bukkit.getServer() as CraftServer).handle.server.recentTps[0]
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/entity/EcoEntityController.kt

@@ -0,0 +1,95 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1.entity
+
+import com.willfp.eco.core.entities.ai.CustomGoal
+import com.willfp.eco.core.entities.ai.EntityController
+import com.willfp.eco.core.entities.ai.EntityGoal
+import com.willfp.eco.core.entities.ai.TargetGoal
+import com.willfp.eco.internal.spigot.proxy.common.ai.CustomGoalFactory
+import com.willfp.eco.internal.spigot.proxy.common.ai.getGoalFactory
+import com.willfp.eco.internal.spigot.proxy.common.toPathfinderMob
+import net.minecraft.world.entity.PathfinderMob
+import net.minecraft.world.entity.ai.goal.Goal
+import org.bukkit.entity.Mob
+
+class EcoEntityController<T : Mob>(
+    private val handle: T
+) : EntityController<T> {
+    override fun addEntityGoal(priority: Int, goal: EntityGoal<in T>): EntityController<T> {
+        val nms = getNms() ?: return this
+
+        nms.goalSelector.addGoal(
+            priority,
+            goal.getGoalFactory()?.create(goal, nms) ?: return this
+        )
+
+        return this
+    }
+
+    override fun removeEntityGoal(goal: EntityGoal<in T>): EntityController<T> {
+        val nms = getNms() ?: return this
+
+        val predicate: (Goal) -> Boolean = if (goal is CustomGoal<*>) {
+            { CustomGoalFactory.isGoalOfType(it, goal) }
+        } else {
+            { goal.getGoalFactory()?.isGoalOfType(it) == true }
+        }
+
+        for (wrapped in nms.goalSelector.availableGoals.toSet()) {
+            if (predicate(wrapped.goal)) {
+                nms.goalSelector.removeGoal(wrapped.goal)
+            }
+        }
+
+        return this
+    }
+
+    override fun clearEntityGoals(): EntityController<T> {
+        val nms = getNms() ?: return this
+        nms.goalSelector.availableGoals.clear()
+        return this
+    }
+
+    override fun addTargetGoal(priority: Int, goal: TargetGoal<in T>): EntityController<T> {
+        val nms = getNms() ?: return this
+
+        nms.targetSelector.addGoal(
+            priority, goal.getGoalFactory()?.create(goal, nms) ?: return this
+        )
+
+        nms.targetSelector
+
+        return this
+    }
+
+    override fun removeTargetGoal(goal: TargetGoal<in T>): EntityController<T> {
+        val nms = getNms() ?: return this
+
+        val predicate: (Goal) -> Boolean = if (goal is CustomGoal<*>) {
+            { CustomGoalFactory.isGoalOfType(it, goal) }
+        } else {
+            { goal.getGoalFactory()?.isGoalOfType(it) == true }
+        }
+
+        for (wrapped in nms.targetSelector.availableGoals.toSet()) {
+            if (predicate(wrapped.goal)) {
+                nms.targetSelector.removeGoal(wrapped.goal)
+            }
+        }
+
+        return this
+    }
+
+    override fun clearTargetGoals(): EntityController<T> {
+        val nms = getNms() ?: return this
+        nms.targetSelector.availableGoals.clear()
+        return this
+    }
+
+    private fun getNms(): PathfinderMob? {
+        return handle.toPathfinderMob()
+    }
+
+    override fun getEntity(): T {
+        return handle
+    }
+}

eco-core/core-nms/v1_20_R2/build.gradle.kts

@@ -0,0 +1,39 @@
+plugins {
+    id("io.papermc.paperweight.userdev")
+}
+
+group = "com.willfp"
+version = rootProject.version
+
+dependencies {
+    implementation(project(":eco-core:core-nms:nms-common"))
+    paperweight.paperDevBundle("1.20.2-R0.1-SNAPSHOT")
+
+    implementation("net.kyori:adventure-text-minimessage:4.11.0") {
+        version {
+            strictly("4.11.0")
+        }
+        exclude(group = "net.kyori", module = "adventure-api")
+    }
+}
+
+tasks {
+    build {
+        dependsOn(reobfJar)
+    }
+
+    reobfJar {
+        mustRunAfter(shadowJar)
+    }
+
+    shadowJar {
+        relocate(
+            "com.willfp.eco.internal.spigot.proxy.common",
+            "com.willfp.eco.internal.spigot.proxy.v1_20_R2.common"
+        )
+        relocate(
+            "net.kyori.adventure.text.minimessage",
+            "com.willfp.eco.internal.spigot.proxy.v1_20_R2.minimessage"
+        )
+    }
+}

eco-core/core-nms/v1_20_R2/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R2/BukkitCommands.kt

@@ -0,0 +1,35 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R2
+
+import com.willfp.eco.core.command.PluginCommandBase
+import com.willfp.eco.internal.spigot.proxy.BukkitCommandsProxy
+import org.bukkit.Bukkit
+import org.bukkit.command.Command
+import org.bukkit.command.SimpleCommandMap
+import org.bukkit.craftbukkit.v1_20_R2.CraftServer
+import java.lang.reflect.Field
+
+class BukkitCommands : BukkitCommandsProxy {
+    private val knownCommandsField: Field by lazy {
+        SimpleCommandMap::class.java.getDeclaredField("knownCommands")
+            .apply {
+                isAccessible = true
+            }
+    }
+
+    @Suppress("UNCHECKED_CAST")
+    private val knownCommands: MutableMap<String, Command>
+        get() = knownCommandsField.get(getCommandMap()) as MutableMap<String, Command>
+
+    override fun getCommandMap(): SimpleCommandMap {
+        return (Bukkit.getServer() as CraftServer).commandMap
+    }
+
+    override fun syncCommands() {
+        (Bukkit.getServer() as CraftServer).syncCommands()
+    }
+
+    override fun unregisterCommand(command: PluginCommandBase) {
+        knownCommands.remove(command.name)
+        knownCommands.remove("${command.plugin.name.lowercase()}:${command.name}")
+    }
+}

eco-core/core-nms/v1_20_R2/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R2/CommonsInitializer.kt

@@ -0,0 +1,159 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R2
+
+import com.willfp.eco.core.EcoPlugin
+import com.willfp.eco.internal.spigot.proxy.CommonsInitializerProxy
+import com.willfp.eco.internal.spigot.proxy.common.CommonsProvider
+import com.willfp.eco.internal.spigot.proxy.common.packet.PacketInjectorListener
+import com.willfp.eco.internal.spigot.proxy.common.toResourceLocation
+import net.minecraft.core.registries.BuiltInRegistries
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.nbt.Tag
+import net.minecraft.resources.ResourceLocation
+import net.minecraft.server.level.ServerPlayer
+import net.minecraft.world.entity.PathfinderMob
+import net.minecraft.world.item.Item
+import org.bukkit.Bukkit
+import org.bukkit.Material
+import org.bukkit.NamespacedKey
+import org.bukkit.craftbukkit.v1_20_R2.CraftServer
+import org.bukkit.craftbukkit.v1_20_R2.entity.CraftEntity
+import org.bukkit.craftbukkit.v1_20_R2.entity.CraftMob
+import org.bukkit.craftbukkit.v1_20_R2.entity.CraftPlayer
+import org.bukkit.craftbukkit.v1_20_R2.inventory.CraftItemStack
+import org.bukkit.craftbukkit.v1_20_R2.persistence.CraftPersistentDataContainer
+import org.bukkit.craftbukkit.v1_20_R2.persistence.CraftPersistentDataTypeRegistry
+import org.bukkit.craftbukkit.v1_20_R2.util.CraftMagicNumbers
+import org.bukkit.craftbukkit.v1_20_R2.util.CraftNamespacedKey
+import org.bukkit.entity.LivingEntity
+import org.bukkit.entity.Mob
+import org.bukkit.entity.Player
+import org.bukkit.inventory.ItemStack
+import org.bukkit.persistence.PersistentDataContainer
+import java.lang.reflect.Field
+
+class CommonsInitializer : CommonsInitializerProxy {
+    override fun init(plugin: EcoPlugin) {
+        CommonsProvider.setIfNeeded(CommonsProviderImpl)
+        plugin.onEnable {
+            plugin.eventManager.registerListener(PacketInjectorListener)
+        }
+    }
+
+    object CommonsProviderImpl : CommonsProvider {
+        private val cisHandle: Field = CraftItemStack::class.java.getDeclaredField("handle").apply {
+            isAccessible = true
+        }
+
+        private val pdcRegsitry = Class.forName("org.bukkit.craftbukkit.v1_20_R2.inventory.CraftMetaItem")
+            .getDeclaredField("DATA_TYPE_REGISTRY")
+            .apply { isAccessible = true }
+            .get(null) as CraftPersistentDataTypeRegistry
+
+        override val nbtTagString = CraftMagicNumbers.NBT.TAG_STRING
+
+        override fun toPathfinderMob(mob: Mob): PathfinderMob? {
+            val craft = mob as? CraftMob ?: return null
+            return craft.handle as? PathfinderMob
+        }
+
+        override fun toResourceLocation(namespacedKey: NamespacedKey): ResourceLocation =
+            CraftNamespacedKey.toMinecraft(namespacedKey)
+
+        override fun asNMSStack(itemStack: ItemStack): net.minecraft.world.item.ItemStack {
+            return if (itemStack !is CraftItemStack) {
+                CraftItemStack.asNMSCopy(itemStack)
+            } else {
+                cisHandle[itemStack] as net.minecraft.world.item.ItemStack? ?: CraftItemStack.asNMSCopy(itemStack)
+            }
+        }
+
+        override fun asBukkitStack(itemStack: net.minecraft.world.item.ItemStack): ItemStack {
+            return CraftItemStack.asCraftMirror(itemStack)
+        }
+
+        override fun mergeIfNeeded(itemStack: ItemStack, nmsStack: net.minecraft.world.item.ItemStack) {
+            if (itemStack !is CraftItemStack) {
+                itemStack.itemMeta = CraftItemStack.asCraftMirror(nmsStack).itemMeta
+            }
+        }
+
+        override fun toBukkitEntity(entity: net.minecraft.world.entity.LivingEntity): LivingEntity? =
+            CraftEntity.getEntity(Bukkit.getServer() as CraftServer, entity) as? LivingEntity
+
+        override fun makePdc(tag: CompoundTag, base: Boolean): PersistentDataContainer {
+            fun emptyPdc(): CraftPersistentDataContainer = CraftPersistentDataContainer(pdcRegsitry)
+
+            fun CompoundTag?.toPdc(): PersistentDataContainer {
+                val pdc = emptyPdc()
+                this ?: return pdc
+                val keys = this.allKeys
+                for (key in keys) {
+                    pdc.put(key, this[key])
+                }
+
+                return pdc
+            }
+
+            return if (base) {
+                tag.toPdc()
+            } else {
+                if (tag.contains("PublicBukkitValues")) {
+                    tag.getCompound("PublicBukkitValues").toPdc()
+                } else {
+                    emptyPdc()
+                }
+            }
+        }
+
+        override fun setPdc(
+            tag: CompoundTag,
+            pdc: PersistentDataContainer?,
+            item: net.minecraft.world.item.ItemStack?
+        ) {
+            fun CraftPersistentDataContainer.toTag(): CompoundTag {
+                val compound = CompoundTag()
+                val rawPublicMap: Map<String, Tag> = this.raw
+                for ((key, value) in rawPublicMap) {
+                    compound.put(key, value)
+                }
+
+                return compound
+            }
+
+            val container = when (pdc) {
+                is CraftPersistentDataContainer? -> pdc
+                else -> null
+            }
+
+            if (item != null) {
+                if (container != null && !container.isEmpty) {
+                    for (key in tag.allKeys.toSet()) {
+                        tag.remove(key)
+                    }
+
+                    tag.merge(container.toTag())
+                } else {
+                    item.tag = null
+                }
+            } else {
+                if (container != null && !container.isEmpty) {
+                    tag.put("PublicBukkitValues", container.toTag())
+                } else {
+                    tag.remove("PublicBukkitValues")
+                }
+            }
+        }
+
+        override fun materialToItem(material: Material): Item =
+            BuiltInRegistries.ITEM.getOptional(material.key.toResourceLocation())
+                .orElseThrow { IllegalArgumentException("Material is not item!") }
+
+        override fun itemToMaterial(item: Item) =
+            Material.getMaterial(BuiltInRegistries.ITEM.getKey(item).path.uppercase())
+                ?: throw IllegalArgumentException("Invalid material!")
+
+        override fun toNMS(player: Player): ServerPlayer {
+            return (player as CraftPlayer).handle
+        }
+    }
+}

eco-core/core-nms/v1_20_R2/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R2/DummyEntityFactory.kt

@@ -0,0 +1,16 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R2
+
+import com.willfp.eco.internal.entities.EcoDummyEntity
+import com.willfp.eco.internal.spigot.proxy.DummyEntityFactoryProxy
+import org.bukkit.Location
+import org.bukkit.craftbukkit.v1_20_R2.CraftWorld
+import org.bukkit.entity.Entity
+import org.bukkit.entity.EntityType
+
+class DummyEntityFactory : DummyEntityFactoryProxy {
+    override fun createDummyEntity(location: Location): Entity {
+        val world = location.world as CraftWorld
+        @Suppress("UsePropertyAccessSyntax")
+        return EcoDummyEntity(world.createEntity(location, EntityType.ZOMBIE.entityClass).getBukkitEntity())
+    }
+}

eco-core/core-nms/v1_20_R2/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R2/EntityControllerFactory.kt

@@ -0,0 +1,12 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R2
+
+import com.willfp.eco.core.entities.ai.EntityController
+import com.willfp.eco.internal.spigot.proxy.EntityControllerFactoryProxy
+import com.willfp.eco.internal.spigot.proxy.v1_20_R2.entity.EcoEntityController
+import org.bukkit.entity.Mob
+
+class EntityControllerFactory : EntityControllerFactoryProxy {
+    override fun <T : Mob> createEntityController(entity: T): EntityController<T> {
+        return EcoEntityController(entity)
+    }
+}

eco-core/core-nms/v1_20_R2/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R2/ExtendedPersistentDataContainerFactory.kt

@@ -0,0 +1,82 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R2
+
+import com.willfp.eco.core.data.ExtendedPersistentDataContainer
+import com.willfp.eco.internal.spigot.proxy.ExtendedPersistentDataContainerFactoryProxy
+import net.minecraft.nbt.Tag
+import org.bukkit.Material
+import org.bukkit.craftbukkit.v1_20_R2.inventory.CraftItemStack
+import org.bukkit.craftbukkit.v1_20_R2.persistence.CraftPersistentDataContainer
+import org.bukkit.craftbukkit.v1_20_R2.persistence.CraftPersistentDataTypeRegistry
+import org.bukkit.inventory.ItemStack
+import org.bukkit.persistence.PersistentDataContainer
+import org.bukkit.persistence.PersistentDataType
+
+class ExtendedPersistentDataContainerFactory : ExtendedPersistentDataContainerFactoryProxy {
+    private val registry: CraftPersistentDataTypeRegistry
+
+    init {
+        /*
+         Can't grab actual instance since it's in CraftMetaItem (which is package-private)
+         And getting it would mean more janky reflection
+         */
+        val item = CraftItemStack.asCraftCopy(ItemStack(Material.STONE))
+        val pdc = item.itemMeta!!.persistentDataContainer
+        this.registry = CraftPersistentDataContainer::class.java.getDeclaredField("registry")
+            .apply { isAccessible = true }.get(pdc) as CraftPersistentDataTypeRegistry
+    }
+
+    override fun adapt(pdc: PersistentDataContainer): ExtendedPersistentDataContainer {
+        return when (pdc) {
+            is CraftPersistentDataContainer -> EcoPersistentDataContainer(pdc)
+            else -> throw IllegalArgumentException("Custom PDC instance ims not supported!")
+        }
+    }
+
+    override fun newPdc(): PersistentDataContainer {
+        return CraftPersistentDataContainer(registry)
+    }
+
+    inner class EcoPersistentDataContainer(
+        private val handle: CraftPersistentDataContainer
+    ) : ExtendedPersistentDataContainer {
+        @Suppress("UNCHECKED_CAST")
+        private val customDataTags: MutableMap<String, Tag> =
+            CraftPersistentDataContainer::class.java.getDeclaredField("customDataTags")
+                .apply { isAccessible = true }.get(handle) as MutableMap<String, Tag>
+
+        override fun <T : Any, Z : Any> set(key: String, dataType: PersistentDataType<T, Z>, value: Z) {
+            customDataTags[key] =
+                registry.wrap(dataType.primitiveType, dataType.toPrimitive(value, handle.adapterContext))
+        }
+
+        override fun <T : Any, Z : Any> has(key: String, dataType: PersistentDataType<T, Z>): Boolean {
+            val value = customDataTags[key] ?: return false
+            return registry.isInstanceOf(dataType.primitiveType, value)
+        }
+
+        override fun <T : Any, Z : Any> get(key: String, dataType: PersistentDataType<T, Z>): Z? {
+            val value = customDataTags[key] ?: return null
+            return dataType.fromPrimitive(registry.extract(dataType.primitiveType, value), handle.adapterContext)
+        }
+
+        override fun <T : Any, Z : Any> getOrDefault(
+            key: String,
+            dataType: PersistentDataType<T, Z>,
+            defaultValue: Z
+        ): Z {
+            return get(key, dataType) ?: defaultValue
+        }
+
+        override fun remove(key: String) {
+            customDataTags.remove(key)
+        }
+
+        override fun getAllKeys(): MutableSet<String> {
+            return customDataTags.keys
+        }
+
+        override fun getBase(): PersistentDataContainer {
+            return handle
+        }
+    }
+}

eco-core/core-nms/v1_20_R2/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R2/FastItemStackFactory.kt

@@ -0,0 +1,12 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R2
+
+import com.willfp.eco.core.fast.FastItemStack
+import com.willfp.eco.internal.spigot.proxy.FastItemStackFactoryProxy
+import com.willfp.eco.internal.spigot.proxy.common.item.EcoFastItemStack
+import org.bukkit.inventory.ItemStack
+
+class FastItemStackFactory : FastItemStackFactoryProxy {
+    override fun create(itemStack: ItemStack): FastItemStack {
+        return EcoFastItemStack(itemStack)
+    }
+}

eco-core/core-nms/v1_20_R2/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R2/MiniMessageTranslator.kt

@@ -0,0 +1,33 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R2
+
+import com.willfp.eco.core.display.Display
+import com.willfp.eco.internal.spigot.proxy.MiniMessageTranslatorProxy
+import com.willfp.eco.util.toLegacy
+import net.kyori.adventure.text.minimessage.MiniMessage
+
+class MiniMessageTranslator : MiniMessageTranslatorProxy {
+    override fun format(message: String): String {
+        var mut = message
+
+        val startsWithPrefix = mut.startsWith(Display.PREFIX)
+        if (startsWithPrefix) {
+            mut = mut.substring(2)
+        }
+
+        mut = mut.replace('§', '&')
+
+        val miniMessage = runCatching {
+            MiniMessage.miniMessage().deserialize(
+                mut
+            ).toLegacy()
+        }.getOrNull() ?: mut
+
+        mut = if (startsWithPrefix) {
+            Display.PREFIX + miniMessage
+        } else {
+            miniMessage
+        }
+
+        return mut
+    }
+}

eco-core/core-nms/v1_20_R2/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R2/PacketHandler.kt

@@ -0,0 +1,46 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R2
+
+import com.willfp.eco.core.EcoPlugin
+import com.willfp.eco.core.packet.PacketListener
+import com.willfp.eco.internal.spigot.proxy.PacketHandlerProxy
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketAutoRecipe
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketHeldItemSlot
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketOpenWindowMerchant
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketSetCreativeSlot
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketSetSlot
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketWindowItems
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.frame.clearFrames
+import net.minecraft.network.protocol.Packet
+import org.bukkit.craftbukkit.v1_20_R2.entity.CraftPlayer
+import org.bukkit.entity.Player
+
+class PacketHandler : PacketHandlerProxy {
+    override fun sendPacket(player: Player, packet: com.willfp.eco.core.packet.Packet) {
+        if (player !is CraftPlayer) {
+            return
+        }
+
+        val handle = packet.handle
+
+        if (handle !is Packet<*>) {
+            return
+        }
+
+        player.handle.connection.send(handle)
+    }
+
+    override fun clearDisplayFrames() {
+        clearFrames()
+    }
+
+    override fun getPacketListeners(plugin: EcoPlugin): List<PacketListener> {
+        return listOf(
+            PacketAutoRecipe(plugin),
+            PacketHeldItemSlot,
+            PacketOpenWindowMerchant,
+            PacketSetCreativeSlot,
+            PacketSetSlot,
+            PacketWindowItems(plugin)
+        )
+    }
+}

eco-core/core-nms/v1_20_R2/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R2/SNBTConverter.kt

@@ -0,0 +1,52 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R2
+
+import com.willfp.eco.core.items.TestableItem
+import com.willfp.eco.core.recipe.parts.EmptyTestableItem
+import com.willfp.eco.internal.spigot.proxy.SNBTConverterProxy
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.nbt.SnbtPrinterTagVisitor
+import net.minecraft.nbt.TagParser
+import org.bukkit.craftbukkit.v1_20_R2.inventory.CraftItemStack
+import org.bukkit.inventory.ItemStack
+
+class SNBTConverter : SNBTConverterProxy {
+    override fun fromSNBT(snbt: String): ItemStack? {
+        val nbt = runCatching { TagParser.parseTag(snbt) }.getOrNull() ?: return null
+        val nms = net.minecraft.world.item.ItemStack.of(nbt)
+        return CraftItemStack.asBukkitCopy(nms)
+    }
+
+    override fun toSNBT(itemStack: ItemStack): String {
+        val nms = CraftItemStack.asNMSCopy(itemStack)
+        return SnbtPrinterTagVisitor().visit(nms.save(CompoundTag()))
+    }
+
+    override fun makeSNBTTestable(snbt: String): TestableItem {
+        val nbt = runCatching { TagParser.parseTag(snbt) }.getOrNull() ?: return EmptyTestableItem()
+        val nms = net.minecraft.world.item.ItemStack.of(nbt)
+        if (nms == net.minecraft.world.item.ItemStack.EMPTY) {
+            return EmptyTestableItem()
+        }
+
+        nbt.remove("Count")
+        return SNBTTestableItem(CraftItemStack.asBukkitCopy(nms), nbt)
+    }
+
+    class SNBTTestableItem(
+        private val item: ItemStack,
+        private val tag: CompoundTag
+    ) : TestableItem {
+        override fun matches(itemStack: ItemStack?): Boolean {
+            if (itemStack == null) {
+                return false
+            }
+
+            val nms = CraftItemStack.asNMSCopy(itemStack)
+            val nmsTag = nms.save(CompoundTag())
+            nmsTag.remove("Count")
+            return tag.copy().merge(nmsTag) == nmsTag && itemStack.type == item.type
+        }
+
+        override fun getItem(): ItemStack = item
+    }
+}

eco-core/core-nms/v1_20_R2/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R2/Skull.kt

@@ -0,0 +1,18 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R2
+
+import com.willfp.eco.internal.spigot.proxy.SkullProxy
+import com.willfp.eco.internal.spigot.proxy.common.texture
+import org.bukkit.inventory.meta.SkullMeta
+
+class Skull : SkullProxy {
+    override fun setSkullTexture(
+        meta: SkullMeta,
+        base64: String
+    ) {
+        meta.texture = base64
+    }
+
+    override fun getSkullTexture(
+        meta: SkullMeta
+    ): String? = meta.texture
+}

eco-core/core-nms/v1_20_R2/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R2/TPS.kt

@@ -0,0 +1,11 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R2
+
+import com.willfp.eco.internal.spigot.proxy.TPSProxy
+import org.bukkit.Bukkit
+import org.bukkit.craftbukkit.v1_20_R2.CraftServer
+
+class TPS : TPSProxy {
+    override fun getTPS(): Double {
+        return (Bukkit.getServer() as CraftServer).handle.server.recentTps[0]
+    }
+}

eco-core/core-nms/v1_20_R2/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R2/entity/EcoEntityController.kt

@@ -0,0 +1,95 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R2.entity
+
+import com.willfp.eco.core.entities.ai.CustomGoal
+import com.willfp.eco.core.entities.ai.EntityController
+import com.willfp.eco.core.entities.ai.EntityGoal
+import com.willfp.eco.core.entities.ai.TargetGoal
+import com.willfp.eco.internal.spigot.proxy.common.ai.CustomGoalFactory
+import com.willfp.eco.internal.spigot.proxy.common.ai.getGoalFactory
+import com.willfp.eco.internal.spigot.proxy.common.toPathfinderMob
+import net.minecraft.world.entity.PathfinderMob
+import net.minecraft.world.entity.ai.goal.Goal
+import org.bukkit.entity.Mob
+
+class EcoEntityController<T : Mob>(
+    private val handle: T
+) : EntityController<T> {
+    override fun addEntityGoal(priority: Int, goal: EntityGoal<in T>): EntityController<T> {
+        val nms = getNms() ?: return this
+
+        nms.goalSelector.addGoal(
+            priority,
+            goal.getGoalFactory()?.create(goal, nms) ?: return this
+        )
+
+        return this
+    }
+
+    override fun removeEntityGoal(goal: EntityGoal<in T>): EntityController<T> {
+        val nms = getNms() ?: return this
+
+        val predicate: (Goal) -> Boolean = if (goal is CustomGoal<*>) {
+            { CustomGoalFactory.isGoalOfType(it, goal) }
+        } else {
+            { goal.getGoalFactory()?.isGoalOfType(it) == true }
+        }
+
+        for (wrapped in nms.goalSelector.availableGoals.toSet()) {
+            if (predicate(wrapped.goal)) {
+                nms.goalSelector.removeGoal(wrapped.goal)
+            }
+        }
+
+        return this
+    }
+
+    override fun clearEntityGoals(): EntityController<T> {
+        val nms = getNms() ?: return this
+        nms.goalSelector.availableGoals.clear()
+        return this
+    }
+
+    override fun addTargetGoal(priority: Int, goal: TargetGoal<in T>): EntityController<T> {
+        val nms = getNms() ?: return this
+
+        nms.targetSelector.addGoal(
+            priority, goal.getGoalFactory()?.create(goal, nms) ?: return this
+        )
+
+        nms.targetSelector
+
+        return this
+    }
+
+    override fun removeTargetGoal(goal: TargetGoal<in T>): EntityController<T> {
+        val nms = getNms() ?: return this
+
+        val predicate: (Goal) -> Boolean = if (goal is CustomGoal<*>) {
+            { CustomGoalFactory.isGoalOfType(it, goal) }
+        } else {
+            { goal.getGoalFactory()?.isGoalOfType(it) == true }
+        }
+
+        for (wrapped in nms.targetSelector.availableGoals.toSet()) {
+            if (predicate(wrapped.goal)) {
+                nms.targetSelector.removeGoal(wrapped.goal)
+            }
+        }
+
+        return this
+    }
+
+    override fun clearTargetGoals(): EntityController<T> {
+        val nms = getNms() ?: return this
+        nms.targetSelector.availableGoals.clear()
+        return this
+    }
+
+    private fun getNms(): PathfinderMob? {
+        return handle.toPathfinderMob()
+    }
+
+    override fun getEntity(): T {
+        return handle
+    }
+}

eco-core/core-plugin/build.gradle.kts

@@ -13,7 +13,7 @@ dependencies {
     implementation("org.jetbrains.exposed:exposed-jdbc:0.37.3")
     implementation("com.zaxxer:HikariCP:5.0.0")
     implementation("net.kyori:adventure-platform-bukkit:4.1.0")
-    implementation("org.javassist:javassist:3.28.0-GA")
+    implementation("org.javassist:javassist:3.29.2-GA")
     implementation("org.mongodb:mongodb-driver-sync:4.6.0")
     implementation("org.litote.kmongo:kmongo-coroutine:4.6.0")
     implementation("com.moandjiezana.toml:toml4j:0.7.2") {
@@ -40,7 +40,7 @@ dependencies {
     compileOnly("com.github.oraxen:oraxen:1.155.0")
     compileOnly("com.github.brcdev-minecraft:shopgui-api:3.0.0")
     compileOnly("com.github.LoneDev6:API-ItemsAdder:2.4.7")
-    compileOnly("com.arcaniax:HeadDatabase-API:1.3.0")
+    compileOnly("com.arcaniax:HeadDatabase-API:1.3.1")
     compileOnly("com.gmail.filoghost.holographicdisplays:holographicdisplays-api:2.4.0")
     compileOnly("com.github.EssentialsX:Essentials:2.18.2")
     compileOnly("com.bgsoftware:SuperiorSkyblockAPI:1.8.3")
@@ -51,10 +51,9 @@ dependencies {
     compileOnly("com.github.Gypopo:EconomyShopGUI-API:1.4.6")
     compileOnly("com.github.N0RSKA:ScytherAPI:55a")
     compileOnly("com.ticxo.modelengine:api:R3.0.1")
-    compileOnly("me.TechsCode:UltraEconomyAPI:1.0.0")
     compileOnly("org.black_ixx:playerpoints:3.2.5")
     compileOnly("com.github.Ssomar-Developement:SCore:3.4.7")
-    compileOnly("io.lumine:Mythic:5.2.1")
+    compileOnly("io.lumine:Mythic:5.3.5")
     compileOnly("io.lumine:LumineUtils:1.19-SNAPSHOT")
     compileOnly("com.SirBlobman.combatlogx:CombatLogX-API:10.0.0.0-SNAPSHOT")
     compileOnly("com.github.sirblobman.combatlogx:api:11.0.0.0-SNAPSHOT")

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/EcoImpl.kt

@@ -37,6 +37,7 @@ import com.willfp.eco.internal.gui.menu.renderedInventory
 import com.willfp.eco.internal.gui.slot.EcoSlotBuilder
 import com.willfp.eco.internal.integrations.PAPIExpansion
 import com.willfp.eco.internal.logging.EcoLogger
+import com.willfp.eco.internal.logging.NOOPLogger
 import com.willfp.eco.internal.placeholder.PlaceholderParser
 import com.willfp.eco.internal.proxy.EcoProxyFactory
 import com.willfp.eco.internal.scheduling.EcoScheduler
@@ -125,6 +126,9 @@ class EcoImpl : EcoSpigotPlugin(), Eco {
     override fun createLogger(plugin: EcoPlugin) =
         EcoLogger(plugin)
 
+    override fun getNOOPLogger() =
+        NOOPLogger
+
     override fun createPAPIIntegration(plugin: EcoPlugin) {
         PAPIExpansion(plugin)
     }
@@ -184,7 +188,7 @@ class EcoImpl : EcoSpigotPlugin(), Eco {
     }
 
     override fun createPluginCommand(
-        parentDelegate: CommandBase,
+        parentDelegate: PluginCommandBase,
         plugin: EcoPlugin,
         name: String,
         permission: String,
@@ -258,6 +262,7 @@ class EcoImpl : EcoSpigotPlugin(), Eco {
 
     override fun addNewPlugin(plugin: EcoPlugin) {
         loadedEcoPlugins[plugin.name.lowercase()] = plugin
+        loadedEcoPlugins[plugin.id] = plugin
     }
 
     override fun getLoadedPlugins(): List<String> =
@@ -281,9 +286,6 @@ class EcoImpl : EcoSpigotPlugin(), Eco {
     override fun loadPlayerProfile(uuid: UUID) =
         profileHandler.load(uuid)
 
-    override fun unloadPlayerProfile(uuid: UUID) =
-        profileHandler.unloadPlayer(uuid)
-
     override fun createDummyEntity(location: Location): Entity =
         getProxy(DummyEntityFactoryProxy::class.java).createDummyEntity(location)
 

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/EcoSpigotPlugin.kt

@@ -45,8 +45,10 @@ import com.willfp.eco.internal.items.ArgParserColor
 import com.willfp.eco.internal.items.ArgParserCustomModelData
 import com.willfp.eco.internal.items.ArgParserEnchantment
 import com.willfp.eco.internal.items.ArgParserFlag
+import com.willfp.eco.internal.items.ArgParserHead
 import com.willfp.eco.internal.items.ArgParserName
 import com.willfp.eco.internal.items.ArgParserTexture
+import com.willfp.eco.internal.items.ArgParserTrim
 import com.willfp.eco.internal.items.ArgParserUnbreakable
 import com.willfp.eco.internal.lookup.SegmentParserGroup
 import com.willfp.eco.internal.lookup.SegmentParserUseIfPresent
@@ -61,11 +63,7 @@ import com.willfp.eco.internal.spigot.data.PlayerBlockListener
 import com.willfp.eco.internal.spigot.data.ProfileHandler
 import com.willfp.eco.internal.spigot.data.storage.ProfileSaver
 import com.willfp.eco.internal.spigot.drops.CollatedRunnable
-import com.willfp.eco.internal.spigot.eventlisteners.EntityDeathByEntityListeners
-import com.willfp.eco.internal.spigot.eventlisteners.NaturalExpGainListenersPaper
-import com.willfp.eco.internal.spigot.eventlisteners.NaturalExpGainListenersSpigot
-import com.willfp.eco.internal.spigot.eventlisteners.PlayerJumpListenersPaper
-import com.willfp.eco.internal.spigot.eventlisteners.PlayerJumpListenersSpigot
+import com.willfp.eco.internal.spigot.eventlisteners.*
 import com.willfp.eco.internal.spigot.eventlisteners.armor.ArmorChangeEventListeners
 import com.willfp.eco.internal.spigot.eventlisteners.armor.ArmorListener
 import com.willfp.eco.internal.spigot.gui.GUIListener
@@ -112,11 +110,13 @@ import com.willfp.eco.internal.spigot.integrations.mcmmo.McmmoIntegrationImpl
 import com.willfp.eco.internal.spigot.integrations.multiverseinventories.MultiverseInventoriesIntegration
 import com.willfp.eco.internal.spigot.integrations.placeholder.PlaceholderIntegrationPAPI
 import com.willfp.eco.internal.spigot.integrations.price.PriceFactoryPlayerPoints
+import com.willfp.eco.internal.spigot.integrations.price.PriceFactoryRoyaleEconomy
 import com.willfp.eco.internal.spigot.integrations.price.PriceFactoryUltraEconomy
 import com.willfp.eco.internal.spigot.integrations.shop.ShopDeluxeSellwands
 import com.willfp.eco.internal.spigot.integrations.shop.ShopEconomyShopGUI
 import com.willfp.eco.internal.spigot.integrations.shop.ShopShopGuiPlus
 import com.willfp.eco.internal.spigot.integrations.shop.ShopZShop
+import com.willfp.eco.internal.spigot.metrics.PlayerflowHandler
 import com.willfp.eco.internal.spigot.proxy.FastItemStackFactoryProxy
 import com.willfp.eco.internal.spigot.proxy.PacketHandlerProxy
 import com.willfp.eco.internal.spigot.recipes.CraftingRecipeListener
@@ -127,6 +127,7 @@ import com.willfp.eco.internal.spigot.recipes.stackhandlers.ShapedCraftingRecipe
 import com.willfp.eco.internal.spigot.recipes.stackhandlers.ShapelessCraftingRecipeStackHandler
 import com.willfp.eco.util.ClassUtils
 import me.TechsCode.UltraEconomy.UltraEconomy
+import me.qKing12.RoyaleEconomy.MultiCurrency.MultiCurrencyHandler
 import net.kyori.adventure.platform.bukkit.BukkitAudiences
 import net.milkbowl.vault.economy.Economy
 import org.bukkit.Bukkit
@@ -147,6 +148,10 @@ abstract class EcoSpigotPlugin : EcoPlugin() {
         Items.registerArgParser(ArgParserFlag)
         Items.registerArgParser(ArgParserUnbreakable)
         Items.registerArgParser(ArgParserName)
+        Items.registerArgParser(ArgParserHead)
+        if (Prerequisite.HAS_1_20.isMet) {
+            Items.registerArgParser(ArgParserTrim)
+        }
 
         Entities.registerArgParser(EntityArgParserName)
         Entities.registerArgParser(EntityArgParserNoAI)
@@ -219,8 +224,6 @@ abstract class EcoSpigotPlugin : EcoPlugin() {
             this.logger.info("No conflicts found!")
         }
 
-
-        CollatedRunnable(this)
         CustomItemsManager.registerProviders() // Do it again here
 
         // Register events for ShopSellEvent
@@ -251,19 +254,23 @@ abstract class EcoSpigotPlugin : EcoPlugin() {
         Eco.get().adventure?.close()
     }
 
-    override fun handleReload() {
+    override fun createTasks() {
         CollatedRunnable(this)
 
         this.scheduler.runLater(3) {
             profileHandler.migrateIfNeeded()
         }
 
-        ProfileSaver(this, profileHandler)
+        ProfileSaver(this, profileHandler).startTicking()
+
         this.scheduler.runTimer(
-            { getProxy(PacketHandlerProxy::class.java).clearDisplayFrames() },
             this.configYml.getInt("display-frame-ttl").toLong(),
-            this.configYml.getInt("display-frame-ttl").toLong()
-        )
+            this.configYml.getInt("display-frame-ttl").toLong(),
+        ) { getProxy(PacketHandlerProxy::class.java).clearDisplayFrames() }
+
+        if (this.configYml.getBool("playerflow")) {
+            PlayerflowHandler(this.scheduler).startTicking()
+        }
     }
 
     override fun handleAfterLoad() {
@@ -359,6 +366,11 @@ abstract class EcoSpigotPlugin : EcoPlugin() {
                 }
             },
             IntegrationLoader("PlayerPoints") { Prices.registerPriceFactory(PriceFactoryPlayerPoints()) },
+            IntegrationLoader("RoyaleEconomy") {
+                for (currency in MultiCurrencyHandler.getCurrencies()) {
+                    Prices.registerPriceFactory(PriceFactoryRoyaleEconomy(currency))
+                }
+            },
 
             // Placeholder
             IntegrationLoader("PlaceholderAPI") { PlaceholderManager.addIntegration(PlaceholderIntegrationPAPI()) },
@@ -378,12 +390,12 @@ abstract class EcoSpigotPlugin : EcoPlugin() {
         val listeners = mutableListOf(
             ArmorListener(),
             EntityDeathByEntityListeners(this),
-            CraftingRecipeListener(),
+            CraftingRecipeListener(this),
             StackedRecipeListener(this),
             GUIListener(this),
             ArrowDataListener(this),
             ArmorChangeEventListeners(this),
-            DataListener(this),
+            DataListener(this, profileHandler),
             PlayerBlockListener(this),
             ServerLocking
         )

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/DataListener.kt

@@ -1,6 +1,5 @@
 package com.willfp.eco.internal.spigot.data
 
-import com.willfp.eco.core.Eco
 import com.willfp.eco.core.EcoPlugin
 import com.willfp.eco.util.PlayerUtils
 import org.bukkit.event.EventHandler
@@ -11,11 +10,14 @@ import org.bukkit.event.player.PlayerLoginEvent
 import org.bukkit.event.player.PlayerQuitEvent
 
 class DataListener(
-    private val plugin: EcoPlugin
+    private val plugin: EcoPlugin,
+    private val handler: ProfileHandler
 ) : Listener {
     @EventHandler(priority = EventPriority.HIGHEST)
     fun onLeave(event: PlayerQuitEvent) {
-        Eco.get().unloadPlayerProfile(event.player.uniqueId)
+        val profile = handler.accessLoadedProfile(event.player.uniqueId) ?: return
+        handler.saveKeysFor(event.player.uniqueId, profile.data.keys)
+        handler.unloadPlayer(event.player.uniqueId)
     }
 
     @EventHandler
@@ -27,6 +29,6 @@ class DataListener(
 
     @EventHandler(priority = EventPriority.LOWEST)
     fun onLogin(event: PlayerLoginEvent) {
-        Eco.get().unloadPlayerProfile(event.player.uniqueId)
+        handler.unloadPlayer(event.player.uniqueId)
     }
 }

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/EcoProfile.kt

@@ -1,17 +1,21 @@
 package com.willfp.eco.internal.spigot.data
 
+import com.willfp.eco.core.EcoPlugin
 import com.willfp.eco.core.data.PlayerProfile
 import com.willfp.eco.core.data.Profile
 import com.willfp.eco.core.data.ServerProfile
 import com.willfp.eco.core.data.keys.PersistentDataKey
+import com.willfp.eco.core.data.keys.PersistentDataKeyType
 import com.willfp.eco.internal.spigot.data.storage.DataHandler
+import com.willfp.eco.util.namespacedKeyOf
 import java.util.UUID
 import java.util.concurrent.ConcurrentHashMap
 
 abstract class EcoProfile(
     val data: MutableMap<PersistentDataKey<*>, Any>,
     val uuid: UUID,
-    private val handler: DataHandler
+    private val handler: DataHandler,
+    private val localHandler: DataHandler
 ) : Profile {
     override fun <T : Any> write(key: PersistentDataKey<T>, value: T) {
         this.data[key] = value
@@ -25,7 +29,12 @@ abstract class EcoProfile(
             return this.data[key] as T
         }
 
-        this.data[key] = handler.read(uuid, key) ?: key.defaultValue
+        this.data[key] = if (key.isLocal) {
+            localHandler.read(uuid, key)
+        } else {
+            handler.read(uuid, key)
+        } ?: key.defaultValue
+
         return read(key)
     }
 
@@ -49,18 +58,51 @@ abstract class EcoProfile(
 class EcoPlayerProfile(
     data: MutableMap<PersistentDataKey<*>, Any>,
     uuid: UUID,
-    handler: DataHandler
-) : EcoProfile(data, uuid, handler), PlayerProfile {
+    handler: DataHandler,
+    localHandler: DataHandler
+) : EcoProfile(data, uuid, handler, localHandler), PlayerProfile {
     override fun toString(): String {
         return "EcoPlayerProfile{uuid=$uuid}"
     }
 }
 
+private val serverIDKey = PersistentDataKey(
+    namespacedKeyOf("eco", "server_id"),
+    PersistentDataKeyType.STRING,
+    ""
+)
+
+private val localServerIDKey = PersistentDataKey(
+    namespacedKeyOf("eco", "local_server_id"),
+    PersistentDataKeyType.STRING,
+    ""
+)
+
 class EcoServerProfile(
     data: MutableMap<PersistentDataKey<*>, Any>,
-    handler: DataHandler
-) : EcoProfile(data, serverProfileUUID, handler), ServerProfile {
+    handler: DataHandler,
+    localHandler: DataHandler
+) : EcoProfile(data, serverProfileUUID, handler, localHandler), ServerProfile {
+    override fun getServerID(): String {
+        if (this.read(serverIDKey).isBlank()) {
+            this.write(serverIDKey, UUID.randomUUID().toString())
+        }
+
+        return this.read(serverIDKey)
+    }
+
+    override fun getLocalServerID(): String {
+        if (this.read(localServerIDKey).isBlank()) {
+            this.write(localServerIDKey, UUID.randomUUID().toString())
+        }
+
+        return this.read(localServerIDKey)
+    }
+
     override fun toString(): String {
         return "EcoServerProfile"
     }
 }
+
+private val PersistentDataKey<*>.isLocal: Boolean
+    get() = this == localServerIDKey || EcoPlugin.getPlugin(this.key.namespace)?.isUsingLocalStorage == true

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/KeyRegistry.kt

@@ -4,6 +4,7 @@ import com.willfp.eco.core.config.interfaces.Config
 import com.willfp.eco.core.data.keys.PersistentDataKey
 import com.willfp.eco.core.data.keys.PersistentDataKeyType
 import org.bukkit.NamespacedKey
+import java.math.BigDecimal
 
 object KeyRegistry {
     private val registry = mutableMapOf<NamespacedKey, PersistentDataKey<*>>()
@@ -44,6 +45,9 @@ object KeyRegistry {
             PersistentDataKeyType.CONFIG -> if (default !is Config) {
                 throw IllegalArgumentException("Invalid Data Type! Should be Config")
             }
+            PersistentDataKeyType.BIG_DECIMAL -> if (default !is BigDecimal) {
+                throw IllegalArgumentException("Invalid Data Type! Should be BigDecimal")
+            }
 
             else -> throw NullPointerException("Null value found!")
         }

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/ProfileHandler.kt

@@ -9,7 +9,6 @@ import com.willfp.eco.internal.spigot.EcoSpigotPlugin
 import com.willfp.eco.internal.spigot.ServerLocking
 import com.willfp.eco.internal.spigot.data.storage.DataHandler
 import com.willfp.eco.internal.spigot.data.storage.HandlerType
-import com.willfp.eco.internal.spigot.data.storage.LegacyMySQLDataHandler
 import com.willfp.eco.internal.spigot.data.storage.MongoDataHandler
 import com.willfp.eco.internal.spigot.data.storage.MySQLDataHandler
 import com.willfp.eco.internal.spigot.data.storage.YamlDataHandler
@@ -24,21 +23,12 @@ class ProfileHandler(
 ) {
     private val loaded = mutableMapOf<UUID, EcoProfile>()
 
+    private val localHandler = YamlDataHandler(plugin, this)
+
     val handler: DataHandler = when (type) {
-        HandlerType.YAML -> YamlDataHandler(plugin, this)
+        HandlerType.YAML -> localHandler
         HandlerType.MYSQL -> MySQLDataHandler(plugin, this)
         HandlerType.MONGO -> MongoDataHandler(plugin, this)
-        HandlerType.LEGACY_MYSQL -> LegacyMySQLDataHandler(plugin, this)
-    }
-
-    init {
-        if (handler.type == HandlerType.LEGACY_MYSQL) {
-            plugin.logger.warning("You're using the legacy MySQL handler!")
-            plugin.logger.warning("Some features will not work and you may get unfixable errors.")
-            plugin.logger.warning("Support cannot be given to data issues related to legacy MySQL.")
-            plugin.logger.warning("Change your data handler to mysql, mongo, or yaml to fix this!")
-            plugin.logger.warning("This can be done in /plugins/eco/config.yml")
-        }
     }
 
     fun accessLoadedProfile(uuid: UUID): EcoProfile? =
@@ -53,7 +43,7 @@ class ProfileHandler(
         val data = mutableMapOf<PersistentDataKey<*>, Any>()
 
         val profile = if (uuid == serverProfileUUID)
-            EcoServerProfile(data, handler) else EcoPlayerProfile(data, uuid, handler)
+            EcoServerProfile(data, handler, localHandler) else EcoPlayerProfile(data, uuid, handler, localHandler)
 
         loaded[uuid] = profile
         return profile
@@ -68,7 +58,19 @@ class ProfileHandler(
     }
 
     fun saveKeysFor(uuid: UUID, keys: Set<PersistentDataKey<*>>) {
-        handler.saveKeysFor(uuid, keys)
+        val profile = accessLoadedProfile(uuid) ?: return
+        val map = mutableMapOf<PersistentDataKey<*>, Any>()
+
+        for (key in keys) {
+            map[key] = profile.data[key] ?: continue
+        }
+
+        handler.saveKeysFor(uuid, map)
+
+        // Don't save to local handler if it's the same handler.
+        if (localHandler != handler) {
+            localHandler.saveKeysFor(uuid, map)
+        }
     }
 
     fun unloadPlayer(uuid: UUID) {
@@ -77,6 +79,10 @@ class ProfileHandler(
 
     fun save() {
         handler.save()
+
+        if (localHandler != handler) {
+            localHandler.save()
+        }
     }
 
     fun migrateIfNeeded() {
@@ -90,11 +96,7 @@ class ProfileHandler(
         }
 
 
-        var previousHandlerType = HandlerType.valueOf(plugin.dataYml.getString("previous-handler"))
-
-        if (previousHandlerType == HandlerType.MYSQL && !plugin.dataYml.has("new-mysql")) {
-            previousHandlerType = HandlerType.LEGACY_MYSQL
-        }
+        val previousHandlerType = HandlerType.valueOf(plugin.dataYml.getString("previous-handler"))
 
         if (previousHandlerType == type) {
             return
@@ -104,7 +106,6 @@ class ProfileHandler(
             HandlerType.YAML -> YamlDataHandler(plugin, this)
             HandlerType.MYSQL -> MySQLDataHandler(plugin, this)
             HandlerType.MONGO -> MongoDataHandler(plugin, this)
-            HandlerType.LEGACY_MYSQL -> LegacyMySQLDataHandler(plugin, this)
         }
 
         ServerLocking.lock("Migrating player data! Check console for more information.")
@@ -164,5 +165,8 @@ class ProfileHandler(
 
     fun initialize() {
         handler.initialize()
+        if (localHandler != handler) {
+            localHandler.initialize()
+        }
     }
 }

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/DataHandler.kt

@@ -19,7 +19,7 @@ abstract class DataHandler(
     /**
      * Save a set of keys for a given UUID.
      */
-    abstract fun saveKeysFor(uuid: UUID, keys: Set<PersistentDataKey<*>>)
+    abstract fun saveKeysFor(uuid: UUID, keys: Map<PersistentDataKey<*>, Any>)
 
     // Everything below this are methods that are only needed for certain implementations.
 

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/HandlerType.kt

@@ -3,6 +3,5 @@ package com.willfp.eco.internal.spigot.data.storage
 enum class HandlerType {
     YAML,
     MYSQL,
-    MONGO,
-    LEGACY_MYSQL
+    MONGO
 }

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/LegacyMySQLDataHandler.kt

@@ -1,315 +0,0 @@
-package com.willfp.eco.internal.spigot.data.storage
-
-import com.github.benmanes.caffeine.cache.Caffeine
-import com.google.common.util.concurrent.ThreadFactoryBuilder
-import com.willfp.eco.core.Eco
-import com.willfp.eco.core.EcoPlugin
-import com.willfp.eco.core.data.keys.PersistentDataKey
-import com.willfp.eco.core.data.keys.PersistentDataKeyType
-import com.willfp.eco.internal.spigot.EcoSpigotPlugin
-import com.willfp.eco.internal.spigot.data.ProfileHandler
-import com.willfp.eco.internal.spigot.data.serverProfileUUID
-import com.zaxxer.hikari.HikariConfig
-import com.zaxxer.hikari.HikariDataSource
-import org.jetbrains.exposed.dao.id.UUIDTable
-import org.jetbrains.exposed.sql.BooleanColumnType
-import org.jetbrains.exposed.sql.Column
-import org.jetbrains.exposed.sql.Database
-import org.jetbrains.exposed.sql.DoubleColumnType
-import org.jetbrains.exposed.sql.IntegerColumnType
-import org.jetbrains.exposed.sql.ResultRow
-import org.jetbrains.exposed.sql.SchemaUtils
-import org.jetbrains.exposed.sql.VarCharColumnType
-import org.jetbrains.exposed.sql.insert
-import org.jetbrains.exposed.sql.select
-import org.jetbrains.exposed.sql.transactions.transaction
-import org.jetbrains.exposed.sql.update
-import java.util.UUID
-import java.util.concurrent.Callable
-import java.util.concurrent.Executors
-import java.util.concurrent.TimeUnit
-
-/*
-
-The MySQL data handler is hot garbage for several reasons:
-- Using MySQL on unstructured data: it's being horrifically misused, but that's just how it has to be.
-- Can't remove un-needed keys, there's wasted space in the columns everywhere.
-- No native support for the STRING_LIST type, instead it 'serializes' the lists with semicolons as separators.
-- General lack of flexibility, it's too rigid.
-
-That's why I added the MongoDB handler, it's far, far better suited for what eco does - use it over
-MySQL if you can.
-
-Oh, also - I don't really know how this class works. I've rewritten it and hacked it together several ways
-in several sessions, and it's basically complete gibberish to me. Adding the STRING_LIST type is probably
-the worst bodge I've shipped in production.
-
- */
-
-@Suppress("UNCHECKED_CAST")
-class LegacyMySQLDataHandler(
-    plugin: EcoSpigotPlugin,
-    handler: ProfileHandler
-) : DataHandler(HandlerType.LEGACY_MYSQL) {
-    private val database: Database
-    private val playerHandler: ImplementedMySQLHandler
-    private val serverHandler: ImplementedMySQLHandler
-
-    init {
-        val config = HikariConfig()
-        config.driverClassName = "com.mysql.cj.jdbc.Driver"
-        config.username = plugin.configYml.getString("mysql.user")
-        config.password = plugin.configYml.getString("mysql.password")
-        config.jdbcUrl = "jdbc:mysql://" +
-                "${plugin.configYml.getString("mysql.host")}:" +
-                "${plugin.configYml.getString("mysql.port")}/" +
-                plugin.configYml.getString("mysql.database")
-        config.maximumPoolSize = plugin.configYml.getInt("mysql.connections")
-
-        database = Database.connect(HikariDataSource(config))
-
-        playerHandler = ImplementedMySQLHandler(
-            handler,
-            UUIDTable("eco_players"),
-            plugin
-        )
-
-        serverHandler = ImplementedMySQLHandler(
-            handler,
-            UUIDTable("eco_server"),
-            plugin
-        )
-    }
-
-    override fun <T : Any> read(uuid: UUID, key: PersistentDataKey<T>): T? {
-        return applyFor(uuid) {
-            it.read(uuid, key)
-        }
-    }
-
-    override fun <T : Any> write(uuid: UUID, key: PersistentDataKey<T>, value: T) {
-        applyFor(uuid) {
-            it.write(uuid, key, value)
-        }
-    }
-
-    override fun saveKeysFor(uuid: UUID, keys: Set<PersistentDataKey<*>>) {
-        applyFor(uuid) {
-            it.saveKeysForRow(uuid, keys)
-        }
-    }
-
-    private inline fun <R> applyFor(uuid: UUID, function: (ImplementedMySQLHandler) -> R): R {
-        return if (uuid == serverProfileUUID) {
-            function(serverHandler)
-        } else {
-            function(playerHandler)
-        }
-    }
-
-    override fun initialize() {
-        playerHandler.initialize()
-        serverHandler.initialize()
-    }
-
-    @Suppress("UNCHECKED_CAST")
-    private inner class ImplementedMySQLHandler(
-        private val handler: ProfileHandler,
-        private val table: UUIDTable,
-        private val plugin: EcoPlugin
-    ) {
-        private val rows = Caffeine.newBuilder()
-            .expireAfterWrite(3, TimeUnit.SECONDS)
-            .build<UUID, ResultRow>()
-
-        private val threadFactory = ThreadFactoryBuilder().setNameFormat("eco-legacy-mysql-thread-%d").build()
-        private val executor = Executors.newFixedThreadPool(plugin.configYml.getInt("mysql.threads"), threadFactory)
-        val registeredKeys = mutableSetOf<PersistentDataKey<*>>()
-
-        init {
-            transaction(database) {
-                SchemaUtils.create(table)
-            }
-        }
-
-        fun initialize() {
-            transaction(database) {
-                SchemaUtils.createMissingTablesAndColumns(table, withLogs = false)
-            }
-        }
-
-        fun ensureKeyRegistration(key: PersistentDataKey<*>) {
-            if (table.columns.any { it.name == key.key.toString() }) {
-                registeredKeys.add(key)
-                return
-            }
-
-            registerColumn(key)
-            registeredKeys.add(key)
-        }
-
-        fun <T : Any> write(uuid: UUID, key: PersistentDataKey<T>, value: Any) {
-            getRow(uuid)
-            doWrite(uuid, key, key.type.constrainSQLTypes(value))
-        }
-
-        private fun doWrite(uuid: UUID, key: PersistentDataKey<*>, constrainedValue: Any) {
-            val column: Column<Any> = getColumn(key) as Column<Any>
-
-            executor.submit {
-                transaction(database) {
-                    table.update({ table.id eq uuid }) {
-                        it[column] = constrainedValue
-                    }
-                }
-            }
-        }
-
-        fun saveKeysForRow(uuid: UUID, keys: Set<PersistentDataKey<*>>) {
-            saveRow(uuid, keys)
-        }
-
-        private fun saveRow(uuid: UUID, keys: Set<PersistentDataKey<*>>) {
-            val profile = handler.loadGenericProfile(uuid)
-
-            executor.submit {
-                transaction(database) {
-                    getRow(uuid)
-
-                    for (key in keys) {
-                        doWrite(uuid, key, key.type.constrainSQLTypes(profile.read(key)))
-                    }
-                }
-            }
-        }
-
-        fun <T> read(uuid: UUID, key: PersistentDataKey<T>): T? {
-            val doRead = Callable<T?> {
-                transaction(database) {
-                    val row = getRow(uuid)
-                    val column = getColumn(key)
-                    val raw = row[column]
-                    key.type.fromConstrained(raw)
-                }
-            }
-
-            ensureKeyRegistration(key) // DON'T DELETE THIS LINE! I know it's covered in getColumn, but I need to do it here as well.
-
-            doRead.call()
-
-            return if (Eco.get().ecoPlugin.configYml.getBool("mysql.async-reads")) {
-                executor.submit(doRead).get()
-            } else {
-                doRead.call()
-            }
-        }
-
-        private fun <T> registerColumn(key: PersistentDataKey<T>) {
-            try {
-                transaction(database) {
-                    try {
-                        table.apply {
-                            if (table.columns.any { it.name == key.key.toString() }) {
-                                return@apply
-                            }
-
-                            when (key.type) {
-                                PersistentDataKeyType.INT -> registerColumn<Int>(key.key.toString(), IntegerColumnType())
-                                    .default(key.defaultValue as Int)
-
-                                PersistentDataKeyType.DOUBLE -> registerColumn<Double>(
-                                    key.key.toString(),
-                                    DoubleColumnType()
-                                ).default(key.defaultValue as Double)
-
-                                PersistentDataKeyType.BOOLEAN -> registerColumn<Boolean>(
-                                    key.key.toString(),
-                                    BooleanColumnType()
-                                ).default(key.defaultValue as Boolean)
-
-                                PersistentDataKeyType.STRING -> registerColumn<String>(
-                                    key.key.toString(),
-                                    VarCharColumnType(512)
-                                ).default(key.defaultValue as String)
-
-                                PersistentDataKeyType.STRING_LIST -> registerColumn<String>(
-                                    key.key.toString(),
-                                    VarCharColumnType(8192)
-                                ).default(PersistentDataKeyType.STRING_LIST.constrainSQLTypes(key.defaultValue as List<String>) as String)
-
-                                PersistentDataKeyType.CONFIG -> throw IllegalArgumentException(
-                                    "Config Persistent Data Keys are not supported by the legacy MySQL handler!"
-                                )
-
-                                else -> throw NullPointerException("Null value found!")
-                            }
-                        }
-
-                        SchemaUtils.createMissingTablesAndColumns(table, withLogs = false)
-                    } catch (e: Exception) {
-                        plugin.logger.info("MySQL Error 1!")
-                        e.printStackTrace()
-                        // What's that? Two enormous exception catches? That's right! This code sucks.
-                    }
-                }
-            } catch (e: Exception) {
-                plugin.logger.info("MySQL Error 2!")
-                e.printStackTrace()
-                // It might fail. Who cares? This is legacy.
-            }
-        }
-
-        private fun getColumn(key: PersistentDataKey<*>): Column<*> {
-            ensureKeyRegistration(key)
-
-            val name = key.key.toString()
-
-            return table.columns.first { it.name == name }
-        }
-
-        private fun getRow(uuid: UUID): ResultRow {
-            fun select(uuid: UUID): ResultRow? {
-                return transaction(database) {
-                    table.select { table.id eq uuid }.limit(1).singleOrNull()
-                }
-            }
-
-            return rows.get(uuid) {
-                val row = select(uuid)
-
-                return@get if (row != null) {
-                    row
-                } else {
-                    transaction(database) {
-                        table.insert { it[id] = uuid }
-                    }
-                    select(uuid)
-                }
-            }
-        }
-    }
-}
-
-private fun <T> PersistentDataKeyType<T>.constrainSQLTypes(value: Any): Any {
-    return if (this == PersistentDataKeyType.STRING_LIST) {
-        @Suppress("UNCHECKED_CAST")
-        value as List<String>
-        value.joinToString(separator = ";")
-    } else {
-        value
-    }
-}
-
-private fun <T> PersistentDataKeyType<T>.fromConstrained(constrained: Any?): T? {
-    if (constrained == null) {
-        return null
-    }
-
-    @Suppress("UNCHECKED_CAST")
-    return if (this == PersistentDataKeyType.STRING_LIST) {
-        constrained as String
-        constrained.split(";").toList()
-    } else {
-        constrained
-    } as T
-}

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/MongoDataHandler.kt

@@ -1,6 +1,5 @@
 package com.willfp.eco.internal.spigot.data.storage
 
-import com.willfp.eco.core.data.Profile
 import com.willfp.eco.core.data.keys.PersistentDataKey
 import com.willfp.eco.internal.spigot.EcoSpigotPlugin
 import com.willfp.eco.internal.spigot.data.ProfileHandler
@@ -51,18 +50,16 @@ class MongoDataHandler(
         }
     }
 
-    override fun saveKeysFor(uuid: UUID, keys: Set<PersistentDataKey<*>>) {
-        val profile = handler.loadGenericProfile(uuid)
-
+    override fun saveKeysFor(uuid: UUID, keys: Map<PersistentDataKey<*>, Any>) {
         scope.launch {
-            for (key in keys) {
-                saveKey(profile, uuid, key)
+            for ((key, value) in keys) {
+                saveKey(uuid, key, value)
             }
         }
     }
 
-    private suspend fun <T : Any> saveKey(profile: Profile, uuid: UUID, key: PersistentDataKey<T>) {
-        val data = profile.read(key)
+    private suspend fun <T : Any> saveKey(uuid: UUID, key: PersistentDataKey<T>, value: Any) {
+        val data = value as T
         doWrite(uuid, key, data)
     }
 
@@ -100,6 +97,18 @@ class MongoDataHandler(
             profile
         }
     }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) {
+            return true
+        }
+
+        return other is MongoDataHandler
+    }
+
+    override fun hashCode(): Int {
+        return type.hashCode()
+    }
 }
 
 private data class UUIDProfile(

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/MySQLDataHandler.kt

@@ -34,7 +34,7 @@ Whatever. At least it works.
 
 @Suppress("UNCHECKED_CAST")
 class MySQLDataHandler(
-    private val plugin: EcoSpigotPlugin,
+    plugin: EcoSpigotPlugin,
     private val handler: ProfileHandler
 ) : DataHandler(HandlerType.MYSQL) {
     private val database: Database
@@ -84,6 +84,8 @@ class MySQLDataHandler(
             PersistentDataKeyType.BOOLEAN -> data.getBoolOrNull(key.key.toString())
             PersistentDataKeyType.STRING_LIST -> data.getStringsOrNull(key.key.toString())
             PersistentDataKeyType.CONFIG -> data.getSubsectionOrNull(key.key.toString())
+            PersistentDataKeyType.BIG_DECIMAL -> data.getBigDecimalOrNull(key.key.toString())
+
             else -> null
         }
 
@@ -97,16 +99,15 @@ class MySQLDataHandler(
         setData(uuid, data)
     }
 
-    override fun saveKeysFor(uuid: UUID, keys: Set<PersistentDataKey<*>>) {
-        val profile = handler.loadGenericProfile(uuid)
-
+    override fun saveKeysFor(uuid: UUID, keys: Map<PersistentDataKey<*>, Any>) {
         executor.submit {
             val data = getData(uuid)
-            for (key in keys) {
-                data.set(key.key.toString(), profile.read(key))
+
+            for ((key, value) in keys) {
+                data.set(key.key.toString(), value)
             }
 
-            setData(uuid, data)
+            doSetData(uuid, data)
         }
     }
 
@@ -136,10 +137,14 @@ class MySQLDataHandler(
 
     private fun setData(uuid: UUID, config: Config) {
         executor.submit {
-            transaction(database) {
-                table.update({ table.id eq uuid }) {
-                    it[dataColumn] = config.toPlaintext()
-                }
+            doSetData(uuid, config)
+        }
+    }
+
+    private fun doSetData(uuid: UUID, config: Config) {
+        transaction(database) {
+            table.update({ table.id eq uuid }) {
+                it[dataColumn] = config.toPlaintext()
             }
         }
     }
@@ -150,8 +155,15 @@ class MySQLDataHandler(
         }
     }
 
-    override fun save() {
-        plugin.dataYml.set("new-mysql", true)
-        plugin.dataYml.save()
+    override fun equals(other: Any?): Boolean {
+        if (this === other) {
+            return true
+        }
+
+        return other is MySQLDataHandler
+    }
+
+    override fun hashCode(): Int {
+        return type.hashCode()
     }
 }

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/ProfileSaver.kt

@@ -5,10 +5,10 @@ import com.willfp.eco.internal.spigot.data.EcoProfile
 import com.willfp.eco.internal.spigot.data.ProfileHandler
 
 class ProfileSaver(
-    plugin: EcoPlugin,
-    handler: ProfileHandler
+    private val plugin: EcoPlugin,
+    private val handler: ProfileHandler
 ) {
-    init {
+    fun startTicking() {
         val interval = plugin.configYml.getInt("save-interval").toLong()
 
         plugin.scheduler.runTimer(20, interval) {

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/YamlDataHandler.kt

@@ -27,6 +27,8 @@ class YamlDataHandler(
             PersistentDataKeyType.BOOLEAN -> dataYml.getBoolOrNull("player.$uuid.${key.key}") as T?
             PersistentDataKeyType.STRING_LIST -> dataYml.getStringsOrNull("player.$uuid.${key.key}") as T?
             PersistentDataKeyType.CONFIG -> dataYml.getSubsectionOrNull("player.$uuid.${key.key}") as T?
+            PersistentDataKeyType.BIG_DECIMAL -> dataYml.getBigDecimalOrNull("player.$uuid.${key.key}") as T?
+
             else -> null
         }
 
@@ -37,15 +39,25 @@ class YamlDataHandler(
         doWrite(uuid, key.key, value)
     }
 
-    override fun saveKeysFor(uuid: UUID, keys: Set<PersistentDataKey<*>>) {
-        val profile = handler.loadGenericProfile(uuid)
-
-        for (key in keys) {
-            doWrite(uuid, key.key, profile.read(key))
+    override fun saveKeysFor(uuid: UUID, keys: Map<PersistentDataKey<*>, Any>) {
+        for ((key, value) in keys) {
+            doWrite(uuid, key.key, value)
         }
     }
 
     private fun doWrite(uuid: UUID, key: NamespacedKey, value: Any) {
         dataYml.set("player.$uuid.$key", value)
     }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) {
+            return true
+        }
+
+        return other is YamlDataHandler
+    }
+
+    override fun hashCode(): Int {
+        return type.hashCode()
+    }
 }

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/gui/GUIListener.kt

@@ -15,6 +15,7 @@ import org.bukkit.event.EventHandler
 import org.bukkit.event.EventPriority
 import org.bukkit.event.Listener
 import org.bukkit.event.inventory.ClickType
+import org.bukkit.event.inventory.InventoryAction
 import org.bukkit.event.inventory.InventoryClickEvent
 import org.bukkit.event.inventory.InventoryCloseEvent
 import org.bukkit.event.inventory.InventoryDragEvent
@@ -44,6 +45,10 @@ class GUIListener(private val plugin: EcoPlugin) : Listener {
 
         if (delegate is EcoSlot) {
             delegate.handleInventoryClick(event, menu)
+
+            if (delegate.shouldRenderOnClick(event.click)) {
+                player.renderActiveMenu()
+            }
         } else if (delegate === this) {
             return
         } else {
@@ -51,14 +56,6 @@ class GUIListener(private val plugin: EcoPlugin) : Listener {
         }
     }
 
-    @EventHandler(
-        priority = EventPriority.HIGHEST
-    )
-    fun handleRender(event: InventoryClickEvent) {
-        val player = event.whoClicked as? Player ?: return
-        player.renderActiveMenu()
-    }
-
     @EventHandler(
         priority = EventPriority.HIGH
     )
@@ -94,6 +91,8 @@ class GUIListener(private val plugin: EcoPlugin) : Listener {
             if (slot.isCaptive(player, menu)) {
                 if (!slot.isAllowedCaptive(player, menu, event.oldCursor)) {
                     event.isCancelled = true
+                } else {
+                    player.renderActiveMenu()
                 }
             } else {
                 event.isCancelled = true
@@ -126,6 +125,8 @@ class GUIListener(private val plugin: EcoPlugin) : Listener {
         if (slot.isCaptive(player, menu)) {
             if (!slot.isAllowedCaptive(player, menu, event.currentItem)) {
                 event.isCancelled = true
+            } else {
+                player.renderActiveMenu()
             }
         } else {
             event.isCancelled = true
@@ -136,23 +137,13 @@ class GUIListener(private val plugin: EcoPlugin) : Listener {
     fun handleClose(event: InventoryCloseEvent) {
         val menu = event.inventory.getMenu() as? EcoMenu ?: return
 
+        menu.refresh(event.player as Player)
+
         menu.handleClose(event)
 
         plugin.scheduler.run { MenuHandler.unregisterInventory(event.inventory) }
     }
 
-    @EventHandler
-    fun forceRender(event: InventoryClickEvent) {
-        val player = event.whoClicked as? Player ?: return
-        player.renderActiveMenu()
-    }
-
-    @EventHandler
-    fun forceRender(event: InventoryDragEvent) {
-        val player = event.whoClicked as? Player ?: return
-        player.renderActiveMenu()
-    }
-
     @EventHandler(
         priority = EventPriority.HIGHEST
     )
@@ -228,6 +219,17 @@ class GUIListener(private val plugin: EcoPlugin) : Listener {
         }
     }
 
+    @EventHandler
+    fun temporaryExploitPatch(event: InventoryClickEvent) {
+        if (event.player.renderedInventory == null) {
+            return
+        }
+
+        if (event.action == InventoryAction.COLLECT_TO_CURSOR) {
+            event.isCancelled = true
+        }
+    }
+
     private fun Player.renderActiveMenu() {
         val rendered = this.renderedInventory ?: return
 

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/integrations/antigrief/AntigriefFabledSkyBlock.kt

@@ -1,20 +1,22 @@
 package com.willfp.eco.internal.spigot.integrations.antigrief
 
-import com.songoda.skyblock.SkyBlock
+import com.craftaro.skyblock.SkyBlock
 import com.willfp.eco.core.integrations.antigrief.AntigriefIntegration
 import org.bukkit.Location
 import org.bukkit.block.Block
 import org.bukkit.entity.LivingEntity
 import org.bukkit.entity.Monster
 import org.bukkit.entity.Player
+import org.bukkit.plugin.java.JavaPlugin
 
 class AntigriefFabledSkyBlock : AntigriefIntegration {
+    private val skyblock = JavaPlugin.getPlugin(SkyBlock::class.java)
+
     override fun getPluginName(): String {
         return "FabledSkyBlock"
     }
 
     override fun canBreakBlock(player: Player, block: Block): Boolean {
-        val skyblock = SkyBlock.getInstance()
         val island = skyblock.islandManager.getIslandAtLocation(block.location) ?: return true
 
         if (player.hasPermission("fabledskyblock.bypass.destroy")) {
@@ -29,7 +31,6 @@ class AntigriefFabledSkyBlock : AntigriefIntegration {
     }
 
     override fun canCreateExplosion(player: Player, location: Location): Boolean {
-        val skyblock = SkyBlock.getInstance()
         val island = skyblock.islandManager.getIslandAtLocation(location) ?: return true
 
         if (player.hasPermission("fabledskyblock.bypass.explosions")) {
@@ -44,7 +45,6 @@ class AntigriefFabledSkyBlock : AntigriefIntegration {
     }
 
     override fun canPlaceBlock(player: Player, block: Block): Boolean {
-        val skyblock = SkyBlock.getInstance()
         val island = skyblock.islandManager.getIslandAtLocation(block.location) ?: return true
 
         if (player.hasPermission("fabledskyblock.bypass.place")) {
@@ -59,8 +59,7 @@ class AntigriefFabledSkyBlock : AntigriefIntegration {
     }
 
     override fun canInjure(player: Player, victim: LivingEntity): Boolean {
-        val skyblock = SkyBlock.getInstance()
-        val island = SkyBlock.getInstance().islandManager.getIslandAtLocation(victim.location) ?: return true
+        val island = skyblock.islandManager.getIslandAtLocation(victim.location) ?: return true
 
         if (victim is Player) return skyblock.permissionManager.hasPermission(island, "PvP", island.getRole(player))
 
@@ -77,8 +76,7 @@ class AntigriefFabledSkyBlock : AntigriefIntegration {
     }
 
     override fun canPickupItem(player: Player, location: Location): Boolean {
-        val skyblock = SkyBlock.getInstance()
-        val island = SkyBlock.getInstance().islandManager.getIslandAtLocation(location) ?: return true
+        val island = skyblock.islandManager.getIslandAtLocation(location) ?: return true
 
         if (player.hasPermission("fabledskyblock.bypass.itempickup")) {
             return true

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/integrations/antigrief/AntigriefKingdoms.kt

@@ -6,11 +6,11 @@ import org.bukkit.block.Block
 import org.bukkit.entity.LivingEntity
 import org.bukkit.entity.Player
 import org.kingdoms.constants.group.Kingdom
-import org.kingdoms.constants.group.model.relationships.StandardRelationAttribute
 import org.kingdoms.constants.land.Land
+import org.kingdoms.constants.land.location.SimpleChunkLocation
 import org.kingdoms.constants.player.KingdomPlayer
-import org.kingdoms.constants.player.StandardKingdomPermission
 import org.kingdoms.managers.PvPManager
+import org.kingdoms.managers.land.BuildingProcessor
 
 class AntigriefKingdoms : AntigriefIntegration {
     override fun canBreakBlock(
@@ -21,34 +21,35 @@ class AntigriefKingdoms : AntigriefIntegration {
         if (kp.isAdmin) {
             return true
         }
-        val kingdom: Kingdom = kp.kingdom ?: return false
-        val land = Land.getLand(block) ?: return true
-        val permission = if (land.isNexusLand) {
-            StandardKingdomPermission.NEXUS_BUILD
-        } else StandardKingdomPermission.BUILD
-
-        return if (!kp.hasPermission(permission)) {
+        return BuildingProcessor(
+            player,
+            kp,
+            SimpleChunkLocation.of(block),
             false
-        } else kingdom.hasAttribute(land.kingdom, StandardRelationAttribute.BUILD)
+        ).process().isSuccessful
     }
 
     override fun canCreateExplosion(
         player: Player,
         location: Location
     ): Boolean {
-        val land = Land.getLand(location) ?: return true
-        if (!land.isClaimed) {
-            return true
-        }
-        val kingdom: Kingdom = land.kingdom
-        return kingdom.isMember(player)
+        return canBreakBlock(player, location.block)
     }
 
     override fun canPlaceBlock(
         player: Player,
         block: Block
     ): Boolean {
-        return canBreakBlock(player, block)
+        val kp: KingdomPlayer = KingdomPlayer.getKingdomPlayer(player)
+        if (kp.isAdmin) {
+            return true
+        }
+        return BuildingProcessor(
+            player,
+            kp,
+            SimpleChunkLocation.of(block),
+            true
+        ).process().isSuccessful
     }
 
     override fun canInjure(