Question

我正在尝试创建一个欢迎最近加入的播放器的命令，但是加入侦听器不会替换lastPlayer变量，因此当您键入/ welba时，它只会显示null。

package me.spoonle.welba.command;

import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.player.PlayerJoinEvent;

import me.spoonle.welba.Main;
import me.spoonle.welba.Utils.Utils;

public class WelbaCommand implements CommandExecutor {

    private Main plugin;

    public WelbaCommand(Main plugin) {
        this.plugin = plugin;

        plugin.getCommand("welba").setExecutor(this);
    }

    public static String lastPlayer = null;

    @EventHandler
    public void onJoin(PlayerJoinEvent e) {
        lastPlayer = e.getPlayer().getName();
    }

    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
        if (!(sender instanceof Player)) {
            sender.sendMessage(Utils.chat("&cYou don't have access to this command! Only players can use this command!"));
            return true;
        }

        Player p = (Player) sender;

        if (p.hasPermission("welba.use")) {
            p.chat("Welcome Back, " + lastPlayer);
        } else {
            p.sendMessage("&cYou don't have use to this command!");
        }
        return false;
    }
}

有我的插件代码。我需要更改收听者的位置吗？我尝试为其创建一个单独的类，但是当我在Main类中调用lastPlayer时，它不会选择该变量。

Answer 1

您需要实现Listener接口并将该类注册到您的主类中。

在Listener中注册Main.java类：

public class Main extends JavaPlugin {
    @Override
    public void onEnable() {
        this.getServer().getPluginManager().registerEvents(new MyListener(), this);       
    }
}

并在MyListener.java中实现监听器：

public class MyListener implements org.bukkit.event.Listener {
    @EventHandler
    public void onJoin(PlayerJoinEvent event) {
        // implement your handling ...
        event.getPlayer().sendMessage("§cIt works!");
    }
}

有关更多信息，请参见this。

onJoin事件未替换lastPlayer

1 个答案: