Add files via upload

pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.example</groupId>
+    <artifactId>PortalCommand</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+    </properties>
+
+</project>

src/main/java/net/emeraldly/portalcmd/Main.java

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+package net.emeraldly.portalcmd;
+
+import cn.nukkit.Player;
+import cn.nukkit.event.EventHandler;
+import cn.nukkit.event.Listener;
+import cn.nukkit.event.player.PlayerTeleportEvent;
+import cn.nukkit.plugin.PluginBase;
+import cn.nukkit.utils.Config;
+
+import java.util.List;
+
+public class Main extends PluginBase implements Listener {
+    @Override
+    public void onEnable(){
+        this.getLogger().info("§aPortalCommand Plugin Enabled!");
+        this.getServer().getPluginManager().registerEvents(this,this);
+        this.getDataFolder().mkdirs();
+        this.saveDefaultConfig();
+        Config config = this.getConfig();
+    }
+
+    @EventHandler
+    public void onPlayerTeleport(PlayerTeleportEvent event){
+        Player player = event.getPlayer();
+        String level = event.getPlayer().getLevel().getName();
+        List<String> list = this.getConfig().getStringList("allow_worlds");
+        if(list.contains(level)){
+            if(event.getCause() == PlayerTeleportEvent.TeleportCause.NETHER_PORTAL){
+                event.setCancelled(true);
+                for(String command : this.getConfig().getStringList("commands")){
+                    player.getServer().dispatchCommand(event.getPlayer(),command);
+                }
+            }
+        }
+    }
+}

src/main/resources/config.yml

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+commands:
+  - "lobby"
+
+allow_worlds:
+  - world

src/main/resources/plugin.yml

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+main: net.emeraldly.portalcmd.Main
+name: PortalCommand
+version: 1.0.0
+api: 1.0.0
+author: LYEmerald