Merge pull request #1 from adrianvic/reflection

Add reflection with initial support to Bukkit CB1060 (b1.7.3)

.gitignore

@@ -2,3 +2,4 @@
 build/
 out/
 .idea/
+libs/

README.md

@@ -1,39 +1,12 @@
-> [!IMPORTANT]
-> This project is in a very early stage, expect bugs until `Release 1.0`.
->
->  Documentation will soon be moved from README.md.
-
 # Eye of Nemesis
-Eye of Nemesis is a plugin that allows server admins to write [policies](#Policies) that will deny or allow (black/whitelist) players to do specific things based on the value of [nodes](#Nodes).
+Eye of Nemesis is a plugin that allows server admins to write policies that will deny or allow (black/whitelist) players to do specific things based on the value of nodes.
 
 ## Warnings
 - Even though running `/eye` will tell you to run `/eye help` to list all available commands, this is not implemented yet, however all commands are available as tab-complete of `/eye`.
 - This plugin is in a very early stage.
 
-## Policies
+## Motivations
-Policy is a structure that holds nodes and tell them _where_ to act. For example, a Location policy will tell its child nodes that they work from coordinates `x1 y1 z1` to `x2 y2 z2`.
+I made this plugin as an effort to preserve a village from my private server. Originally from beta 1.7.3 Betalands server, then transferred to RetroMC, and then finally we downloaded the chunks to merge into our server, I was afraid it would not have the same feeling after all the updates, so I had the idea to make a plugin that can block the newer features.
-
-Currently, the only policy type is Location.
-
-## Nodes
-Nodes are specific rules that rely on it's value to know _when_ to act. For example, a useItem policy with value `cookie` will prevent users from doing anything with a cookie.
-
-### `useItem`
-**Triggered:** breaking/placing/interacting with anything using this item.
-
-**Expects:** list of strings.
-
-### `useEnchantment`
-**Triggered:** breaking/placing/interacting with anything using an item with the specified enchantment, **will allow items without enchantment even on allowlist mode**.
-
-**Expects:** map of _string: string_.
-
-### `attackWith`
-**Triggered:** attacking with this item in hand.
-
-**Expects:** list of strings.
 
 ## Performance
-This plugin is not scalable as it is and will run unoptimized checks when your players do certain things in the server if you have policies enabled, I made it for a server with a few friends.
+This plugin is not scalable as it is and will end up running unoptimized checks when your players do things with policies in effect, I made it for a server with a few friends. I'll look forward into writing more performant code after all my other priorities are implemented.
-
-For every policy there's a check, for every matching policy there are its child nodes, each one introducing new checks. Keep that in mind.

build.gradle

@@ -1,55 +0,0 @@
-plugins {
-    id 'java'
-    id("xyz.jpenilla.run-paper") version "2.3.1"
-}
-
-group = 'io.github.adrianvic'
-version = '1.0.2-SNAPSHOT'
-
-repositories {
-    mavenCentral()
-    maven {
-        name = "papermc-repo"
-        url = "https://repo.papermc.io/repository/maven-public/"
-    }
-}
-
-dependencies {
-    compileOnly("io.papermc.paper:paper-api:1.21.10-R0.1-SNAPSHOT")
-}
-
-tasks {
-  runServer {
-    // Configure the Minecraft version for our task.
-    // This is the only required configuration besides applying the plugin.
-    // Your plugin's jar (or shadowJar if present) will be used automatically.
-    minecraftVersion("1.21")
-  }
-}
-
-def targetJavaVersion = 21
-java {
-    def javaVersion = JavaVersion.toVersion(targetJavaVersion)
-    sourceCompatibility = javaVersion
-    targetCompatibility = javaVersion
-    if (JavaVersion.current() < javaVersion) {
-        toolchain.languageVersion = JavaLanguageVersion.of(targetJavaVersion)
-    }
-}
-
-tasks.withType(JavaCompile).configureEach {
-    options.encoding = 'UTF-8'
-
-    if (targetJavaVersion >= 10 || JavaVersion.current().isJava10Compatible()) {
-        options.release.set(targetJavaVersion)
-    }
-}
-
-processResources {
-    def props = [version: version]
-    inputs.properties props
-    filteringCharset 'UTF-8'
-    filesMatching('plugin.yml') {
-        expand props
-    }
-}

build.gradle.kts

@@ -0,0 +1,93 @@
+plugins {
+    java
+    id("xyz.jpenilla.run-paper") version "2.3.1"
+}
+
+group = "io.github.adrianvic"
+version = "1.0.3-SNAPSHOT"
+
+repositories {
+    mavenCentral()
+    maven("https://repo.papermc.io/repository/maven-public/")
+}
+
+/* ----------------------------------------- */
+/*            SUPPORTED VERSIONS             */
+/* ----------------------------------------- */
+
+val mcVersions = listOf(
+        "b1_7_3",
+        "r1_21"
+)
+
+/* ----------------------------------------- */
+/*       CREATE SOURCE SET PER VERSION       */
+/* ----------------------------------------- */
+
+mcVersions.forEach { ver ->
+    val ss = sourceSets.create(ver) {
+        java.srcDir("src/$ver/java")
+
+        resources.setSrcDirs(listOf("src/$ver/resources", "src/main/resources"))
+
+        compileClasspath += sourceSets["main"].output
+        runtimeClasspath += output + compileClasspath
+    }
+
+    tasks.withType<ProcessResources> {
+        duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+    }
+
+    configurations[ss.implementationConfigurationName]
+        .extendsFrom(configurations["implementation"])
+
+    configurations[ss.compileOnlyConfigurationName]
+        .extendsFrom(configurations["compileOnly"])
+
+}
+
+/* ----------------------------------------- */
+/*               DEPENDENCIES                */
+/* ----------------------------------------- */
+
+dependencies {
+    add("compileOnly", "io.papermc.paper:paper-api:1.21.10-R0.1-SNAPSHOT")
+    add("r1_21CompileOnly", "io.papermc.paper:paper-api:1.21.10-R0.1-SNAPSHOT")
+    add("b1_7_3CompileOnly", files("libs/craftbukkit-1060.jar"))
+}
+
+/* ----------------------------------------- */
+/*               BUILD TASKS                 */
+/* ----------------------------------------- */
+
+mcVersions.forEach { ver ->
+    tasks.register<Jar>("jar${ver.replace(".", "_").replace("-", "_").replace("/", "_").capitalize()}") {
+        duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+        from(sourceSets["main"].output)
+        from(sourceSets[ver].output)
+        archiveClassifier.set(ver)
+
+        manifest {
+            attributes(
+                "Nemesis-Impl-Version" to ver
+            )
+        }
+
+    }
+}
+
+/* ----------------------------------------- */
+/*              JAVA SETTINGS                */
+/* ----------------------------------------- */
+
+java {
+    toolchain.languageVersion.set(JavaLanguageVersion.of(21))
+}
+
+tasks.withType<JavaCompile> {
+    options.encoding = "UTF-8"
+}
+
+tasks.runServer {
+    minecraftVersion("1.21")
+}

src/b1_7_3/java/io/github/adrianvic/nemesiseye/impl/BlockEventListener.java

@@ -0,0 +1,13 @@
+package io.github.adrianvic.nemesiseye.impl;
+
+import io.github.adrianvic.nemesiseye.Events;
+import org.bukkit.event.block.BlockBreakEvent;
+import org.bukkit.event.block.BlockListener;
+
+public class BlockEventListener extends BlockListener {
+    @Override
+    public void onBlockBreak(BlockBreakEvent event) {
+        Events.onBlockBreak(event);
+    }
+
+}

src/b1_7_3/java/io/github/adrianvic/nemesiseye/impl/ConfigurationEx.java

@@ -0,0 +1,89 @@
+package io.github.adrianvic.nemesiseye.impl;
+
+import io.github.adrianvic.nemesiseye.Nemesis;
+import org.bukkit.plugin.java.JavaPlugin;
+import org.bukkit.util.config.Configuration;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+
+public class ConfigurationEx extends Configuration {
+    private final File configFile;
+    private final Log logger;
+    JavaPlugin plugin;
+
+    public ConfigurationEx(String fileName, Log _logger) {
+        super(new File(Nemesis.getInstance().getDataFolder(), fileName));
+        this.plugin = Nemesis.getInstance();
+        logger = _logger;
+        this.configFile = new File(plugin.getDataFolder(), fileName);
+    }
+
+    @Override
+    public void load() {
+        createParentDirectories();
+
+        if (!configFile.exists()) {
+            copyDefaultConfig();
+        }
+
+        try {
+            super.load();
+        } catch (Exception e) {
+            logger.severe(String.format("Failed to load config '%s': %s", configFile.getName(), e.getMessage()));
+        }
+    }
+
+    private void createParentDirectories() {
+        try {
+            Files.createDirectories(configFile.getParentFile().toPath());
+        } catch (IOException e) {
+            logger.severe(String.format("Failed to generate default config directory: %s", e.getMessage()));
+        }
+    }
+
+    private void copyDefaultConfig() {
+        // Load the config from the JAR directly (it is located at the root level)
+        String resourcePath = "/" + configFile.getName(); // Root path of JAR
+
+        try (InputStream input = plugin.getClass().getResourceAsStream(resourcePath)) {
+            if (input == null) {
+                logger.severe(String.format("Default config '%s' wasn't found in the JAR.", configFile.getName()));
+                return;
+            }
+
+            Files.copy(input, configFile.toPath());
+            if (Files.exists(configFile.toPath())) {
+                logger.info(String.format("Default config '%s' generated successfully.", configFile.getName()));
+            } else {
+                logger.warning("We tried to generate the default config file, but it was not found even after the creation. Maybe your permissions are broken?");
+            }
+        } catch (IOException e) {
+            logger.severe(String.format("Failed to generate default config '%s': %s", configFile.getName(), e.getMessage()));
+        }
+    }
+
+    public void loadConfig() {
+        try {
+            this.load();
+            logger.info(String.format("Config '%s' loaded successfully.", configFile.getName()));
+        } catch (Exception e) {
+            logger.severe(String.format("Failed to load config '%s': %s", configFile.getName(), e.getMessage()));
+        }
+    }
+
+    public void saveConfig() {
+        try {
+            this.save();
+            logger.info(String.format("Config '%s' saved successfully.", configFile.getName()));
+        } catch (Exception e) {
+            logger.severe(String.format("Failed to save config '%s': %s", configFile.getName(), e.getMessage()));
+        }
+    }
+
+    public File getConfig() {
+        return configFile;
+    }
+}

src/b1_7_3/java/io/github/adrianvic/nemesiseye/impl/EntityEventListener.java

@@ -0,0 +1,13 @@
+package io.github.adrianvic.nemesiseye.impl;
+
+import io.github.adrianvic.nemesiseye.Events;
+import org.bukkit.event.entity.EntityDamageByEntityEvent;
+import org.bukkit.event.entity.EntityListener;
+
+public class EntityEventListener extends EntityListener {
+    public void onEntityDamage(EntityDamageByEntityEvent event) {
+//        Events.onEntityDamageByEntityEvent(event);
+        event.setCancelled(true);
+    }
+}
+

src/b1_7_3/java/io/github/adrianvic/nemesiseye/impl/Log.java

@@ -0,0 +1,41 @@
+package io.github.adrianvic.nemesiseye.impl;
+
+import static org.bukkit.Bukkit.getServer;
+
+import io.github.adrianvic.nemesiseye.Nemesis;
+import org.bukkit.plugin.PluginDescriptionFile;
+import org.bukkit.plugin.java.JavaPlugin;
+
+public class Log {
+    JavaPlugin plugin;
+    PluginDescriptionFile pdf;
+
+    public Log() {
+        plugin = Nemesis.getInstance();
+        pdf = plugin.getDescription();
+    }
+
+    public void info(String message) {
+        getServer().getLogger().info("[" + pdf.getName() + "] " +  message);
+    }
+
+    public void infoc(String message) {
+        getServer().getLogger().info("[" + pdf.getName() + "] " +  message);
+    }
+
+    public void warning(String message) {
+        getServer().getLogger().warning("[" + pdf.getName() + "] " +  message);
+    }
+
+    public void warningc(String message) {
+        getServer().getLogger().warning("[" + pdf.getName() + "] " +  message);
+    }
+
+    public void severe(String message) {
+        getServer().getLogger().severe("[" + pdf.getName() + "] " +  message);
+    }
+
+    public void severec(String message) {
+        getServer().getLogger().severe("[" + pdf.getName() + "] " +  message);
+    }
+}

src/b1_7_3/java/io/github/adrianvic/nemesiseye/impl/PlayerEventListener.java

@@ -0,0 +1,15 @@
+package io.github.adrianvic.nemesiseye.impl;
+
+import io.github.adrianvic.nemesiseye.Events;
+import org.bukkit.event.block.BlockBreakEvent;
+import org.bukkit.event.block.BlockListener;
+import org.bukkit.event.player.PlayerInteractEvent;
+import org.bukkit.event.player.PlayerListener;
+
+public class PlayerEventListener extends PlayerListener {
+    @Override
+    public void onPlayerInteract(PlayerInteractEvent event) {
+        Events.onInteractionEvent(event);
+    }
+}
+

src/b1_7_3/java/io/github/adrianvic/nemesiseye/impl/b1_7_3.java

@@ -0,0 +1,110 @@
+package io.github.adrianvic.nemesiseye.impl;
+
+import io.github.adrianvic.nemesiseye.Nemesis;
+import io.github.adrianvic.nemesiseye.impl.commands.Eye;
+import io.github.adrianvic.nemesiseye.policy.Policy;
+import io.github.adrianvic.nemesiseye.policy.PolicyParsers;
+import io.github.adrianvic.nemesiseye.policy.policies.LocationPolicy;
+import io.github.adrianvic.nemesiseye.reflection.Glimmer;
+import org.bukkit.World;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.event.Event;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.plugin.PluginManager;
+import org.bukkit.plugin.java.JavaPlugin;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+public class b1_7_3 implements Glimmer {
+    JavaPlugin plugin;
+    PluginManager pm;
+    ConfigurationEx config;
+
+    @Override
+    public File loadConfigFile() {
+        config = new ConfigurationEx("settings.yml", new Log());
+        config.load();
+        return config.getConfig();
+    }
+
+    @Override
+    public List<Policy> loadPoliciesFromFile(File file) {
+        List<?> rawPolicies = config.getList("Policies");
+
+        if (rawPolicies == null) {
+            return new ArrayList<>();
+        }
+
+        List<Map<?, ?>> result = new ArrayList<>(rawPolicies.size());
+
+        for (Object entry : rawPolicies) {
+            if (entry instanceof Map<?,?> m) {
+                result.add(m);
+            }
+        }
+
+        List<Policy> allPolicies = new ArrayList<>();
+        for (Map<?, ?> map : result) {
+            for (Map.Entry<?, ?> entry : map.entrySet()) {
+                if (entry.getKey() instanceof String k && entry.getValue() instanceof List<?> v) {
+                    List<Policy> parsed = PolicyParsers.get(k).parse(v);
+                    allPolicies.addAll(parsed);
+                }
+            }
+        }
+        return allPolicies;
+    }
+
+    @Override
+    public List<Policy> getApplyingPoliciesForEntity(HumanEntity entity, List<Policy> policies) {
+        List<Policy> result = new ArrayList<>();
+        for (Policy p : policies) {
+            if (p instanceof LocationPolicy lp) {
+                for (List<Box> boxList : lp.locations()) {
+                    for (Box b : boxList) {
+                        if (b.contains(entity.getLocation().toVector())) result.add(p);
+                    }
+                }
+            }
+        }
+        return result;
+    }
+
+    @Override
+    public void onLoad() {
+        plugin = Nemesis.getInstance();
+        pm = Nemesis.getInstance().getPluginManager();
+        pm.registerEvent(Event.Type.ENTITY_DAMAGE, new EntityEventListener(), Event.Priority.Normal, plugin);
+        pm.registerEvent(Event.Type.BLOCK_BREAK, new BlockEventListener(), Event.Priority.Normal, plugin);
+        pm.registerEvent(Event.Type.PLAYER_INTERACT, new PlayerEventListener(), Event.Priority.Normal, plugin);
+        plugin.getCommand("eye").setExecutor(new Eye());
+    }
+
+    @Override
+    public ItemStack getItemInMainHandHumanEntity(HumanEntity entity) {
+        return entity.getItemInHand();
+    }
+
+    @Override
+    public boolean hasItemMeta(ItemStack item) {
+        return false;
+    }
+
+    @Override
+    public List<World> getWorlds() {
+        return plugin.getServer().getWorlds();
+    }
+
+    @Override
+    public boolean hasEnchantment(ItemStack item, Map<String, String> valuesmap) {
+        return false;
+    }
+
+    @Override
+    public boolean hasAnyEnchantment(ItemStack itemStack) {
+        return false;
+    }
+}

src/b1_7_3/java/io/github/adrianvic/nemesiseye/impl/commands/Eye.java

@@ -0,0 +1,19 @@
+package io.github.adrianvic.nemesiseye.impl.commands;
+
+import io.github.adrianvic.nemesiseye.commands.EyeCore;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+
+public class Eye implements CommandExecutor {
+    private EyeCore core;
+
+    public Eye() {
+        core = new EyeCore();
+    }
+
+    @Override
+    public boolean onCommand(CommandSender commandSender, Command command, String s, String [] strings) {
+        return core.onCommand(commandSender, command, s, strings);
+    }
+}

src/b1_7_3/resources/plugin.yml

@@ -0,0 +1,8 @@
+name: "Eye-of-Nemesis"
+version: '1.0.3-SNAPSHOT'
+main: io.github.adrianvic.nemesiseye.Nemesis
+author: 'Adrian Victor'
+description: "Change what players can do based in custom criteria."
+commands:
+  eye:
+    description: "Run /eye help to see all available commands."

src/b1_7_3/resources/version.properties

@@ -0,0 +1 @@
+impl.version=b1_7_3

src/main/java/io/github/adrianvic/nemesiseye/Config.java

@@ -1,63 +1,38 @@
 package io.github.adrianvic.nemesiseye;
 
 import io.github.adrianvic.nemesiseye.policy.Policy;
-import io.github.adrianvic.nemesiseye.policy.PolicyParser;
+import io.github.adrianvic.nemesiseye.reflection.Glimmer;
-import io.github.adrianvic.nemesiseye.policy.PolicyParsers;
-import org.bukkit.configuration.file.YamlConfiguration;
 
 import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Map;
 
 public class Config {
-    private final static Config instance = new Config();
+    private static Config instance = new Config();
+    private Glimmer glim = Nemesis.getInstance().getGlimmer();
     private File file;
-    private YamlConfiguration config;
 
     private List<Policy> policies = new ArrayList<>();
 
-    private Config() {
+    private Config() {}
-    }
 
     public void load() {
-        file = new File(Nemesis.getInstance().getDataFolder(), "settings.yml");
+        List<Policy> newPolicies = glim.loadPoliciesFromFile(glim.loadConfigFile());
-
+        policies = newPolicies;
-        if (!file.exists())
-            Nemesis.getInstance().saveResource("settings.yml", false);
-
-        config = new YamlConfiguration();
-        config.options().parseComments(true);
-
-        try {
-            config.load(file);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        List<Map<?, ?>> rawPolicies = config.getMapList("Policies");
-        for (Map<?, ?> map : rawPolicies) {
-            for (Map.Entry<?, ?> entry : map.entrySet()) {
-                if (entry.getKey() instanceof String k && entry.getValue() instanceof List<?> v) {
-                    List<Policy> parsed = PolicyParsers.get(k).parse(v);
-                    policies.addAll(parsed);
-                }
-            }
-        }
     }
 
-    public void save() {
+//    public void save() {
-        try {
+//        try {
-            config.save(file);
+//            config.save(file);
-        } catch (Exception e) {
+//        } catch (Exception e) {
-            e.printStackTrace();
+//            e.printStackTrace();
-        }
+//        }
-    }
+//    }
-
+//
-    public void set(String path, Object value) {
+//    public void set(String path, Object value) {
-        config.set(path, value);
+//        config.set(path, value);
-        save();
+//        save();
-    }
+//    }
 
     public List<Policy> getPolicies() {
         return policies;

src/main/java/io/github/adrianvic/nemesiseye/DataShifter.java

@@ -21,19 +21,23 @@ public class DataShifter {
         return result;
     }
 
-    public static Map<String, String> parseValueToStringMap(List<Object> values) {
+    public static Map<String,String> parseValueToStringMap(List<Object> raw) {
-        Map<String, String> result = new HashMap<>();
+        Map<String,String> out = new HashMap<>();
 
-        for (Object o : values) {
+        for (Object o : raw) {
-            if (o instanceof Map<?, ?> raw) {
+            if (o instanceof Map<?,?> map) {
-                for (Map.Entry<?, ?> e : raw.entrySet()) {
+                for (Map.Entry<?,?> e : map.entrySet()) {
-                    if (e.getKey() instanceof String k && e.getValue() instanceof String v) {
+                    out.put(String.valueOf(e.getKey()), String.valueOf(e.getValue()));
-                        result.put(k, v);
+                }
-                    }
+            } else if (o instanceof String s) {
+
+                String[] parts = s.split(":", 2);
+                if (parts.length == 2) {
+                    out.put(parts[0].trim(), parts[1].trim());
                 }
             }
         }
-        return result;
+        return out;
     }
 
     public static List<Map<?, ?>> parseValueToListOfMaps(List<?> values) {

src/main/java/io/github/adrianvic/nemesiseye/Events.java

@@ -2,27 +2,22 @@ package io.github.adrianvic.nemesiseye;
 
 import org.bukkit.entity.HumanEntity;
 import org.bukkit.entity.Player;
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.Listener;
 import org.bukkit.event.block.BlockBreakEvent;
 import org.bukkit.event.entity.EntityDamageByEntityEvent;
 import org.bukkit.event.player.PlayerInteractEvent;
 
-public class EventListener implements Listener {
+public class Events {
-    @EventHandler
+    public static void onBlockBreak(BlockBreakEvent event) {
-    public void onBlockBreak(BlockBreakEvent event) {
         event.setCancelled(!Validator.canBreak(event.getPlayer()));
     }
 
-    @EventHandler
+    public static void onInteractionEvent(PlayerInteractEvent event) {
-    public void onInteractionEvent(PlayerInteractEvent event) {
         if (event.getItem() != null) {
             event.setCancelled(!Validator.canInteract(event.getPlayer()));
         }
     }
 
-    @EventHandler
+    public static void onEntityDamageByEntityEvent(EntityDamageByEntityEvent event) {
-    public void onEntityDamageByEntityEvent(EntityDamageByEntityEvent event) {
         if (event.getDamager() instanceof Player) {
             event.setCancelled(!Validator.canHit((HumanEntity) event.getDamager()));
         }

src/main/java/io/github/adrianvic/nemesiseye/Nemesis.java

@@ -1,23 +1,65 @@
 package io.github.adrianvic.nemesiseye;
 
-import io.github.adrianvic.nemesiseye.commands.Eye;
+import io.github.adrianvic.nemesiseye.commands.EyeCore;
+import io.github.adrianvic.nemesiseye.reflection.Glimmer;
+import org.bukkit.plugin.PluginManager;
 import org.bukkit.plugin.java.JavaPlugin;
 
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Properties;
+
 public final class Nemesis extends JavaPlugin {
+    private Glimmer glim;
+    private static final String VERSION_PROP = "impl.version";
+    private static Nemesis instance;
 
     @Override
     public void onEnable() {
-        getServer().getPluginManager().registerEvents(new EventListener(), this);
+        instance = this;
+        glim = loadGlim();
+        glim.onLoad();
         Config.getInstance().load();
-        getCommand("eye").setExecutor(new Eye());
+    }
+
+    private String readImplVersion() {
+        Properties props = new Properties();
+        try (InputStream is = getClass().getClassLoader()
+                .getResourceAsStream("version.properties")) {
+            if (is == null) {
+                throw new IllegalStateException("version.properties not found on classpath.");
+            }
+            props.load(is);
+        } catch (IOException e) {
+            throw new IllegalStateException("Failed to load version.properties", e);
+        }
+        String version = props.getProperty(VERSION_PROP);
+        if (version == null || version.isBlank()) {
+            throw new IllegalStateException(VERSION_PROP + " property missing in version.properties.");
+        }
+        return version.trim();
+    }
+
+    private Glimmer loadGlim() {
+        String implVersion = readImplVersion();
+        String className = "io.github.adrianvic.nemesiseye.impl." + implVersion;
+
+        try {
+            Class<?> clazz = Class.forName(className, true, getClass().getClassLoader());
+            if (!Glimmer.class.isAssignableFrom(clazz)) {
+                throw new IllegalStateException(className + " does not implement Glimmer.");
+            }
+            return (Glimmer) clazz.getDeclaredConstructor().newInstance();
+        } catch (ReflectiveOperationException e) {
+            throw new IllegalStateException("Failed to instantiate " + className, e);
+        }
     }
 
     @Override
     public void onDisable() {
-        // Plugin shutdown logic
     }
 
-    public static Nemesis getInstance() {
+    public static Nemesis getInstance() { return instance; }
-        return getPlugin(Nemesis.class);
+    public Glimmer getGlimmer() { return glim; }
-    }
+    public PluginManager getPluginManager() { return this.getServer().getPluginManager(); }
 }

src/main/java/io/github/adrianvic/nemesiseye/Validator.java

@@ -1,16 +1,17 @@
 package io.github.adrianvic.nemesiseye;
 
 import io.github.adrianvic.nemesiseye.policy.Action;
-import io.github.adrianvic.nemesiseye.policy.policies.LocationPolicy;
 import io.github.adrianvic.nemesiseye.policy.Policy;
 import io.github.adrianvic.nemesiseye.policy.PolicyNode;
+import io.github.adrianvic.nemesiseye.reflection.Glimmer;
 import org.bukkit.entity.HumanEntity;
-import org.bukkit.util.BoundingBox;
 
 import java.util.ArrayList;
 import java.util.List;
 
 public class Validator {
+    private final static Glimmer glim = Nemesis.getInstance().getGlimmer();
+
     public static boolean canInteract(HumanEntity entity) {
         return checkAgainstEntity(entity, Action.INTERACT);
     }
@@ -30,13 +31,11 @@ public class Validator {
         for (PolicyNode n : nodes) {
             if (!checkAgainstNode(entity, n, action)) return false;
         }
-
         return true;
     }
 
     public static boolean checkAgainstNode(HumanEntity entity, PolicyNode node, Action action) {
-        boolean allowed = node.getHandler().allows(entity, node, action);
+        return node.getHandler().allows(entity, node, action);
-        return node.isWhitelist() != allowed;
     }
 
     public static List<PolicyNode> getNodesForPolicies(List<Policy> policies) {
@@ -49,18 +48,6 @@ public class Validator {
 
     public static List<Policy> getPoliciesForEntity(HumanEntity entity) {
         List<Policy> ps = Config.getInstance().getPolicies();
-        List<Policy> applyingLPS = new ArrayList<>();
+        return glim.getApplyingPoliciesForEntity(entity, ps);
-        for (Policy p : ps) {
-            if (p instanceof LocationPolicy lp) {
-                for (ArrayList<BoundingBox> boxes : lp.locations()) {
-                    for (BoundingBox box : boxes) {
-                        if (box.contains(entity.getLocation().toVector())) {
-                            applyingLPS.add(lp);
-                        }
-                    }
-                }
-            }
-        }
-        return applyingLPS;
     }
 }

src/main/java/io/github/adrianvic/nemesiseye/commands/EyeCore.java

@@ -2,20 +2,14 @@ package io.github.adrianvic.nemesiseye.commands;
 
 import io.github.adrianvic.nemesiseye.Nemesis;
 import io.github.adrianvic.nemesiseye.commands.sub.*;
-import org.bukkit.ChatColor;
 import org.bukkit.command.Command;
-import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
-import org.bukkit.command.TabCompleter;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
 import java.util.*;
 
-public class Eye implements CommandExecutor, TabCompleter {
+public class EyeCore {
-    private final Map<String, Subcommand> subs = new HashMap<>();
+    public final Map<String, Subcommand> subs = new HashMap<>();
 
-    public Eye() {
+    public EyeCore() {
         register(new Reload());
         register(new ListPolicies());
         register(new PolicyInfo());
@@ -26,14 +20,13 @@ public class Eye implements CommandExecutor, TabCompleter {
         subs.put(sub.name(), sub);
     }
 
-    @Override
+    public boolean onCommand(CommandSender commandSender, Command command, String s, String [] strings) {
-    public boolean onCommand(@NotNull CommandSender commandSender, @NotNull Command command, @NotNull String s, @NotNull String @NotNull [] strings) {
         if (strings.length == 0) {
             commandSender.sendMessage("""
-                    %sEye of Nemesis%s version %s
+                    Eye of Nemesis version %s
                     Usage: '/eye <command>'
                     Use '/eye help' for a list of available commands
-                    """.formatted(ChatColor.RED, ChatColor.RESET, Nemesis.getInstance().getDescription().getVersion()));
+                    """.formatted(Nemesis.getInstance().getDescription().getVersion()));
         } else {
             Subcommand sub = subs.get(strings[0].toLowerCase());
             if (sub == null) {
@@ -45,8 +38,7 @@ public class Eye implements CommandExecutor, TabCompleter {
         return false;
     }
 
-    @Override
+    public List<String> onTabComplete(CommandSender commandSender, Command command, String s, String [] strings) {
-    public @Nullable List<String> onTabComplete(@NotNull CommandSender commandSender, @NotNull Command command, @NotNull String s, @NotNull String @NotNull [] strings) {
         if (strings.length == 1) {
             return new ArrayList<>(subs.keySet());
         }
@@ -56,4 +48,6 @@ public class Eye implements CommandExecutor, TabCompleter {
         }
         return List.of();
     }
+
+    public Map<String, Subcommand> getSubs() { return subs; };
 }

src/main/java/io/github/adrianvic/nemesiseye/commands/sub/PolicyInfo.java

@@ -20,11 +20,11 @@ public class PolicyInfo implements Subcommand {
         for (Policy policy : policies) {
             if (policy.name().equals(strings[0])) {
                 commandSender.sendMessage(String.format("""
-                        Showing info for policy "%s%s%s":
+                        Showing info for policy "%s":
                         Type: %s
                         Nodes: %s
                         %s
-                        """, ChatColor.UNDERLINE, policy.name(), ChatColor.RESET, "location", policy.nodes().size(), policy.allowlist() ? "Is allowlist" : "Is blacklist"));
+                        """, policy.name(), "location", policy.nodes().size(), policy.allowlist() ? "Is allowlist" : "Is blacklist"));
             }
         }
         return true;

src/main/java/io/github/adrianvic/nemesiseye/policy/handlers/attackWith.java

@@ -1,20 +1,25 @@
 package io.github.adrianvic.nemesiseye.policy.handlers;
 
 import io.github.adrianvic.nemesiseye.DataShifter;
+import io.github.adrianvic.nemesiseye.Nemesis;
 import io.github.adrianvic.nemesiseye.policy.Action;
 import io.github.adrianvic.nemesiseye.policy.NodeHandler;
 import io.github.adrianvic.nemesiseye.policy.PolicyNode;
+import io.github.adrianvic.nemesiseye.reflection.Glimmer;
 import org.bukkit.entity.HumanEntity;
 
 public class attackWith implements NodeHandler {
 
+    private final static Glimmer glim = Nemesis.getInstance().getGlimmer();
+
     @Override
     public boolean allows(HumanEntity entity, PolicyNode node, Action action) {
         if (action == Action.HIT) {
             for (String s : DataShifter.parseValueToStringList(node.values())) {
-                if (DataShifter.safeMatches(s, entity.getInventory().getItemInMainHand().getType().toString())) return false;
+                boolean matches = DataShifter.safeMatches(s, glim.getItemInMainHandHumanEntity(entity).getType().toString());
+                if (matches) return node.isWhitelist();
             }
         }
-        return true;
+        return !node.isWhitelist();
     }
 }

src/main/java/io/github/adrianvic/nemesiseye/policy/handlers/useEnchantment.java

@@ -1,41 +1,27 @@
 package io.github.adrianvic.nemesiseye.policy.handlers;
 
 import io.github.adrianvic.nemesiseye.DataShifter;
+import io.github.adrianvic.nemesiseye.Nemesis;
 import io.github.adrianvic.nemesiseye.policy.Action;
 import io.github.adrianvic.nemesiseye.policy.NodeHandler;
 import io.github.adrianvic.nemesiseye.policy.PolicyNode;
-import org.bukkit.enchantments.Enchantment;
+import io.github.adrianvic.nemesiseye.reflection.Glimmer;
 import org.bukkit.entity.HumanEntity;
 import org.bukkit.inventory.ItemStack;
 
-import java.util.Map;
-
 public class useEnchantment implements NodeHandler {
+    private Glimmer glim = Nemesis.getInstance().getGlimmer();
+
     @Override
     public boolean allows(HumanEntity entity, PolicyNode node, Action action) {
-        ItemStack item = entity.getInventory().getItemInMainHand();
+        ItemStack item = glim.getItemInMainHandHumanEntity(entity);
-        if (item.getItemMeta() == null) {
-            return !node.isWhitelist();
-        }
 
-        Map<Enchantment, Integer> enchants = item.getItemMeta().getEnchants();
+        if (!glim.hasItemMeta(item)) return true;
+        if (!glim.hasAnyEnchantment(item)) return true;
 
-        if (enchants.isEmpty()) {
+        boolean matches = glim.hasEnchantment(item,
-            return !node.isWhitelist();
+                DataShifter.parseValueToStringMap(node.values()));
-        }
 
-        Map<String, String> valuesmap = DataShifter.parseValueToStringMap(node.values());
+        return matches ? node.isWhitelist() : !node.isWhitelist();
-
-        for (Map.Entry<Enchantment, Integer> e : enchants.entrySet()) {
-            String enchantment = e.getKey().getKey().getKey();
-            String level = e.getValue().toString();
-
-            for (Map.Entry<String, String> entry : valuesmap.entrySet()) {
-                if (DataShifter.safeMatches(entry.getKey().trim(), enchantment) && DataShifter.safeMatches(entry.getValue().trim(), level)) {
-                    return false;
-                }
-            }
-        }
-        return true;
     }
 }

src/main/java/io/github/adrianvic/nemesiseye/policy/handlers/useItem.java

@@ -1,22 +1,25 @@
 package io.github.adrianvic.nemesiseye.policy.handlers;
 
 import io.github.adrianvic.nemesiseye.DataShifter;
+import io.github.adrianvic.nemesiseye.Nemesis;
 import io.github.adrianvic.nemesiseye.policy.Action;
 import io.github.adrianvic.nemesiseye.policy.NodeHandler;
 import io.github.adrianvic.nemesiseye.policy.PolicyNode;
+import io.github.adrianvic.nemesiseye.reflection.Glimmer;
 import org.bukkit.entity.HumanEntity;
 
 public class useItem implements NodeHandler {
 
+    private Glimmer glim = Nemesis.getInstance().getGlimmer();
+
     @Override
     public boolean allows(HumanEntity entity, PolicyNode node, Action action) {
-        String type = entity.getInventory().getItemInMainHand().getType().toString();
+        String type = glim.getItemInMainHandHumanEntity(entity).getType().toString();
 
         for (String s : DataShifter.parseValueToStringList(node.values())) {
-            if (DataShifter.safeMatches(s, type)) {
+            boolean matches = DataShifter.safeMatches(s, type);
-                return false;
+            if (matches) return node.isWhitelist();
-            }
         }
-        return true;
+        return !node.isWhitelist();
     }
 }

src/main/java/io/github/adrianvic/nemesiseye/policy/parser/LocationPolicyParser.java

@@ -1,17 +1,19 @@
 package io.github.adrianvic.nemesiseye.policy.parser;
 
 import io.github.adrianvic.nemesiseye.DataShifter;
+import io.github.adrianvic.nemesiseye.Nemesis;
 import io.github.adrianvic.nemesiseye.policy.*;
 import io.github.adrianvic.nemesiseye.policy.policies.LocationPolicy;
-import org.bukkit.Bukkit;
+import io.github.adrianvic.nemesiseye.reflection.Glimmer;
 import org.bukkit.Location;
-import org.bukkit.util.BoundingBox;
 
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 
 public class LocationPolicyParser implements PolicyParser {
+    private Glimmer glim = Nemesis.getInstance().getGlimmer();
+
     public List<Policy> parse(List<?> raw) {
         List<Policy> out = new ArrayList<>(raw.size());
         List<Map<?, ?>> parsedRawMap = DataShifter.parseValueToListOfMaps(raw);
@@ -33,12 +35,12 @@ public class LocationPolicyParser implements PolicyParser {
             List<PolicyNode> nodes = PolicyNode.parseNodes(nodeList, allowlist);
 
             // Parsing locations
-            List<ArrayList<BoundingBox>> locations = new ArrayList<>();
+            List<ArrayList<Glimmer.Box>> locations = new ArrayList<>();
 
             Object rawLocations = m.get("locations");
             List<?> groups = rawLocations instanceof List ? (List<?>) rawLocations : List.of();
 
-            ArrayList<BoundingBox> boxes = new ArrayList<>(groups.size());
+            ArrayList<Glimmer.Box> boxes = new ArrayList<>(groups.size());
 
             // Now iterate over regions
             for (Object rObj : groups) {
@@ -54,10 +56,10 @@ public class LocationPolicyParser implements PolicyParser {
                 double y2 = ((Number) c2.get("y")).doubleValue();
                 double z2 = ((Number) c2.get("z")).doubleValue();
 
-                Location loc1 = new Location(Bukkit.getWorlds().getFirst(), x1, y1, z1);
+                Location loc1 = new Location(glim.getWorlds().getFirst(), x1, y1, z1);
-                Location loc2 = new Location(Bukkit.getWorlds().getFirst(), x2, y2, z2);
+                Location loc2 = new Location(glim.getWorlds().getFirst(), x2, y2, z2);
 
-                boxes.add(BoundingBox.of(loc1, loc2));
+                boxes.add(Glimmer.Box.of(loc1, loc2));
             }
             locations.add(boxes);
 

src/main/java/io/github/adrianvic/nemesiseye/policy/policies/LocationPolicy.java

@@ -2,9 +2,9 @@ package io.github.adrianvic.nemesiseye.policy.policies;
 
 import io.github.adrianvic.nemesiseye.policy.Policy;
 import io.github.adrianvic.nemesiseye.policy.PolicyNode;
-import org.bukkit.util.BoundingBox;
+import io.github.adrianvic.nemesiseye.reflection.Glimmer;
 
 import java.util.ArrayList;
 import java.util.List;
 
-public record LocationPolicy(String name, List<ArrayList<BoundingBox>> locations, List<PolicyNode> nodes, boolean allowlist) implements Policy {}
+public record LocationPolicy(String name, List<ArrayList<Glimmer.Box>> locations, List<PolicyNode> nodes, boolean allowlist) implements Policy {}

src/main/java/io/github/adrianvic/nemesiseye/reflection/Glimmer.java

@@ -0,0 +1,52 @@
+package io.github.adrianvic.nemesiseye.reflection;
+
+import io.github.adrianvic.nemesiseye.policy.Policy;
+import org.bukkit.Location;
+import org.bukkit.World;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.util.Vector;
+
+import java.io.File;
+import java.util.List;
+import java.util.Map;
+
+public interface Glimmer {
+    File loadConfigFile();
+    List<Policy> loadPoliciesFromFile(File file);
+    List<Policy> getApplyingPoliciesForEntity(HumanEntity entity, List<Policy> policies);
+    void onLoad();
+    ItemStack getItemInMainHandHumanEntity(HumanEntity entity);
+    boolean hasItemMeta(ItemStack item);
+    List<World> getWorlds();
+    boolean hasEnchantment(ItemStack item, Map<String, String> valuesmap);
+    boolean hasAnyEnchantment(ItemStack itemStack);
+
+    class Box {
+        public final double x1, y1, z1, x2, y2, z2;
+
+        public Box(double x1, double y1, double z1, double x2, double y2, double z2) {
+            this.x1 = Math.min(x1, x2);
+            this.y1 = Math.min(y1, y2);
+            this.z1 = Math.min(z1, z2);
+            this.x2 = Math.max(x1, x2);
+            this.y2 = Math.max(y1, y2);
+            this.z2 = Math.max(z1, z2);
+        }
+
+        public boolean contains(double x, double y, double z) {
+            return x >= x1 && x <= x2
+                    && y >= y1 && y <= y2
+                    && z >= z1 && z <= z2;
+        }
+        public boolean contains(Vector v) {
+            return v.getX() >= x1 && v.getX() <= x2
+                    && v.getY() >= y1 && v.getY() <= y2
+                    && v.getZ() >= z1 && v.getZ() <= z2;
+        }
+
+
+        public static Box of(Location loc1, Location loc2) { return new Box(loc1.getX(), loc1.getY(), loc1.getZ(), loc2.getX(), loc2.getY(), loc2.getZ()); }
+    }
+
+}

src/main/resources/settings.yml

@@ -103,7 +103,7 @@ Policies:
               - FISHING_ROD
               - CLOCK
               - GLOWSTONE_DUST
-              - INK_SAC
+              - INK_SACw
               - BONE_MEAL
               - SUGAR
               - COOKIE
@@ -115,7 +115,7 @@ Policies:
               - DIRT
               - BREAD
           - useEnchantment:
-              "gibberish": 999999
+              "theresnoenchantmentwiththisname": "3"
         locations:
           - corner1: { x: 2100, y: 256, z: 1400 }
             corner2: { x: 1000, y: -64, z: 2200 }

src/r1_21/java/io/github/adrianvic/nemesiseye/impl/EventListener.java

@@ -0,0 +1,25 @@
+package io.github.adrianvic.nemesiseye.impl;
+
+import io.github.adrianvic.nemesiseye.Events;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.block.BlockBreakEvent;
+import org.bukkit.event.entity.EntityDamageByEntityEvent;
+import org.bukkit.event.player.PlayerInteractEvent;
+
+public class EventListener implements Listener {
+    @EventHandler
+    public void onBlockBreak(BlockBreakEvent event) {
+        Events.onBlockBreak(event);
+    }
+
+    @EventHandler
+    public void onInteractionEvent(PlayerInteractEvent event) {
+        Events.onInteractionEvent(event);
+    }
+
+    @EventHandler
+    public void onEntityDamageByEntityEvent(EntityDamageByEntityEvent event) {
+        Events.onEntityDamageByEntityEvent(event);
+    }
+}

src/r1_21/java/io/github/adrianvic/nemesiseye/impl/commands/Eye.java

@@ -0,0 +1,30 @@
+package io.github.adrianvic.nemesiseye.impl.commands;
+
+import io.github.adrianvic.nemesiseye.commands.EyeCore;
+import io.github.adrianvic.nemesiseye.commands.sub.*;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.command.TabCompleter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.*;
+
+public class Eye implements CommandExecutor, TabCompleter {
+    private EyeCore core;
+
+    public Eye() {
+        core = new EyeCore();
+    }
+
+    @Override
+    public boolean onCommand(@NotNull CommandSender commandSender, @NotNull Command command, @NotNull String s, @NotNull String @NotNull [] strings) {
+        return core.onCommand(commandSender, command, s, strings);
+    }
+
+    @Override
+    public @Nullable List<String> onTabComplete(@NotNull CommandSender commandSender, @NotNull Command command, @NotNull String s, @NotNull String @NotNull [] strings) {
+        return core.onTabComplete(commandSender, command, s, strings);
+    }
+}

src/r1_21/java/io/github/adrianvic/nemesiseye/impl/r1_21.java

@@ -0,0 +1,116 @@
+package io.github.adrianvic.nemesiseye.impl;
+
+import io.github.adrianvic.nemesiseye.DataShifter;
+import io.github.adrianvic.nemesiseye.Nemesis;
+import io.github.adrianvic.nemesiseye.impl.commands.Eye;
+import io.github.adrianvic.nemesiseye.policy.Policy;
+import io.github.adrianvic.nemesiseye.policy.PolicyParsers;
+import io.github.adrianvic.nemesiseye.policy.policies.LocationPolicy;
+import io.github.adrianvic.nemesiseye.reflection.Glimmer;
+import org.bukkit.Bukkit;
+import org.bukkit.World;
+import org.bukkit.configuration.file.YamlConfiguration;
+import org.bukkit.enchantments.Enchantment;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.plugin.PluginManager;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+public class r1_21 implements Glimmer {
+    @Override
+    public File loadConfigFile() {
+        File file = new File(Nemesis.getInstance().getDataFolder(), "settings.yml");
+
+        if (!file.exists())
+            Nemesis.getInstance().saveResource("settings.yml", false);
+
+        return file;
+    }
+
+    @Override
+    public List<Policy> loadPoliciesFromFile(File file) {
+        YamlConfiguration config = new YamlConfiguration();
+        config.options().parseComments(true);
+
+        try {
+            config.load(file);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        List<Map<?, ?>> rawPolicies = config.getMapList("Policies");
+        List<Policy> allPolicies = new ArrayList<>();
+        for (Map<?, ?> map : rawPolicies) {
+            for (Map.Entry<?, ?> entry : map.entrySet()) {
+                if (entry.getKey() instanceof String k && entry.getValue() instanceof List<?> v) {
+                    List<Policy> parsed = PolicyParsers.get(k).parse(v);
+                    allPolicies.addAll(parsed);
+                }
+            }
+        }
+        return allPolicies;
+    }
+
+    @Override
+    public List<Policy> getApplyingPoliciesForEntity(HumanEntity entity, List<Policy> policies) {
+        List<Policy> applyingLPS = new ArrayList<>();
+        for (Policy p : policies) {
+            if (p instanceof LocationPolicy lp) {
+                for (ArrayList<Box> boxes : lp.locations()) {
+                    for (Box box : boxes) {
+                        if (box.contains(entity.getLocation().toVector())) {
+                            applyingLPS.add(lp);
+                        }
+                    }
+                }
+            }
+        }
+        return applyingLPS;
+    }
+
+    @Override
+    public void onLoad() {
+        PluginManager pm = Nemesis.getInstance().getPluginManager();
+        Nemesis.getInstance().getCommand("eye").setExecutor(new Eye());
+        pm.registerEvents(new EventListener(), Nemesis.getInstance());
+    }
+
+    @Override
+    public ItemStack getItemInMainHandHumanEntity(HumanEntity entity) {
+        return entity.getInventory().getItemInMainHand();
+    }
+
+    @Override
+    public boolean hasItemMeta(ItemStack item) {
+        if (item.getItemMeta() == null) {
+            return false;
+        }
+        return true;
+    }
+
+    @Override
+    public List<World> getWorlds() {
+        return Bukkit.getWorlds();
+    }
+
+    @Override
+    public boolean hasEnchantment(ItemStack item, Map<String, String> valuesmap) {
+        Map<Enchantment, Integer> enchantmentList = item.getEnchantments();
+        for (Map.Entry<Enchantment, Integer> enchantmentEntry : enchantmentList.entrySet()) {
+            for (Map.Entry<String, String> valueEntry : valuesmap.entrySet()) {
+                if (enchantmentEntry.getKey().getKey().getKey().equals(valueEntry.getKey()) && enchantmentEntry.getValue().toString().equals(valueEntry.getValue())) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    public boolean hasAnyEnchantment(ItemStack item) {
+        return !(item.getItemMeta().getEnchants().isEmpty());
+    }
+}

src/r1_21/resources/plugin.yml

@@ -1,5 +1,5 @@
 name: "Eye-of-Nemesis"
-version: '1.0.2-SNAPSHOT'
+version: '1.0.3-SNAPSHOT'
 main: io.github.adrianvic.nemesiseye.Nemesis
 api-version: '1.21'
 author: 'Adrian Victor'

src/r1_21/resources/version.properties

@@ -0,0 +1 @@
+impl.version=r1_21