java - 如何在 MC Bukkit（Java 插件）中从命令中获取播放器

Question

我正在尝试使用插件在我的 Minecraft 世界中用病毒“感染”某人。我已经完成了它，它也像我想要的那样随机工作，但我也想用命令感染人们（比如“/infect”。我一直在寻找解决方案几个小时但我放弃了，所以我会想寻求帮助。这是插件中的我的 Main.jar：

import java.util.Random;

import java.lang.reflect.Method;  

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.potion.PotionEffect;
import org.bukkit.potion.PotionEffectType;

public class Main extends JavaPlugin{
    
    @Override
    
    
    public void onEnable(){
        
        getLogger().info("Pandemic has been activated...");
        PluginManager pm = getServer().getPluginManager();
        firstListener listener = new firstListener(this);
        
        pm.registerEvents(listener, this);
        
        }
    
    public void onDisable(){
        
        getLogger().info("Pandemic has shut down!");
        
        }
    
    
    
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
        
        Player player = (Player) sender;
        
        
        if (sender instanceof Player) {
            
            String lowerCmd = cmd.getName().toLowerCase();
            
            switch (lowerCmd) {
                
            case "infect":
                
                firstListener listener = new firstListener(this);
                
                listener.infection();
                
                return true;
                
            default:
                
                player.sendMessage("Ese comando no existe");
                
                return true;
                        
            
            }
            
            
        }
    
        player.sendMessage("Ese comando no existe");
        
        return true;
        
    }
    
    

    
    

}

我的 listener.jar 中有“感染”功能：

import java.util.Random; 
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.potion.PotionEffect;
import org.bukkit.potion.PotionEffectType;

public class firstListener implements Listener {
    
    //Constructor
    public firstListener(Main plugin) {
        
        Bukkit.getScheduler().scheduleSyncRepeatingTask(Bukkit.getPluginManager().getPlugin("Plugin"), new Runnable() {
             
            @Override
            public void run() {
               
                Random rand = new Random(); 
                
                // Generate random integers in range 0 to 999 
                int rand_int1 = rand.nextInt(31); 
                
                if (rand_int1 == 30) {
                    
                        Player randomPlayer = Bukkit.getOnlinePlayers().stream().skip((int) (Bukkit.getOnlinePlayers().size() * Math.random())).findFirst().orElse(null);
                        
                        randomPlayer.sendMessage(ChatColor.RED+ "Has sido lamentablemente infectado por coronavirus");
                        
                        randomPlayer.addPotionEffect(new PotionEffect(PotionEffectType.WEAKNESS,18000, 1));
                        
                        randomPlayer.addPotionEffect(new PotionEffect(PotionEffectType.CONFUSION,18000, 1));
                        
                        randomPlayer.addPotionEffect(new PotionEffect(PotionEffectType.SLOW,18000, 1));
                    
                        
               
                    }
                
            }
                
         
        }, 1L , (long) 9000 * 20);
        
    }
        
        public void infection()
        
        {
            
                
                    Player selectedPlayer = Bukkit.getPlayer("yo");
                    
                    selectedPlayer.sendMessage(ChatColor.RED+ "Has sido lamentablemente infectado por coronavirus");
                    
                    selectedPlayer.addPotionEffect(new PotionEffect(PotionEffectType.WEAKNESS,18000, 1));
                    
                    selectedPlayer.addPotionEffect(new PotionEffect(PotionEffectType.CONFUSION,18000, 1));
                    
                    selectedPlayer.addPotionEffect(new PotionEffect(PotionEffectType.SLOW,18000, 1));
            
        }
        
        
        
        
    
    
    //EventHandler
    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent event) {
        
    }

}

谢谢！

标签： javapluginscommandminecraftbukkit

Answer 1

你想在 /infect 被触发后感染随机玩家吗？或者只是感染命令发送者？

这是代码：

public class infect implements CommandExecutor {

    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String arg, String[] args) {
        
        if(sender instanceof Player) {
            Player p = (Player) sender;
            
            // Infect command sender
            if(p.hasPermission("infect")) {
                
                /*
                 * Call event here
                 * Like add potion effect
                 */
                
            }
            
            // Infect target player
            if(p.hasPermission("infect")) {
                if(args.length >= 1) {
                    try {
                        Player target = Bukkit.getPlayer(args[0]);
                        
                        if(target.isOnline()) {
                            /*
                            * Call event here
                            * Like add potion effect
                            */
                        }
                        
                    } catch (Exception e) {
                        
                    }
                }
            }
            
            // Infect random player
            if(p.hasPermission("infect")) {
                int r = new Random().nextInt(Bukkit.getOnlinePlayers().size());
                
                List<Player> isO = new ArrayList<Player>();
                
                for (Player on : Bukkit.getOnlinePlayers()) {
                    isO.add(on);
                }
                
                if(isO.get(r) != null) {
                    /*
                     * Call event here
                     * Like add potion effect
                     */
                }
            }
        }
        return true;
    }
}