用Java写一个Bukkit1201 玩家每天有三十分钟的飞行时间从开启后开始到时间 倒计时精确到秒

以下是一个使用Java编写的Bukkit插件，实现了玩家每天有30分钟的飞行时间，倒计时精确到秒的功能。

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.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.event.player.PlayerToggleFlightEvent;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.scheduler.BukkitRunnable;

import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

public class FlightTimeCounter extends JavaPlugin implements Listener {

    private Map<UUID, Integer> flightTimeMap;

    @Override
    public void onEnable() {
        flightTimeMap = new HashMap<>();
        getServer().getPluginManager().registerEvents(this, this);
        startCountdownTask();
    }

    @Override
    public void onDisable() {
        flightTimeMap.clear();
    }

    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent event) {
        Player player = event.getPlayer();
        flightTimeMap.put(player.getUniqueId(), 0);
    }

    @EventHandler
    public void onPlayerToggleFlight(PlayerToggleFlightEvent event) {
        Player player = event.getPlayer();
        if (player.getAllowFlight()) {
            if (flightTimeMap.containsKey(player.getUniqueId())) {
                int flightTime = flightTimeMap.get(player.getUniqueId());
                if (flightTime < 1800) {
                    flightTimeMap.put(player.getUniqueId(), flightTime + 1);
                } else {
                    player.setAllowFlight(false);
                    player.setFlying(false);
                    player.sendMessage(ChatColor.RED + "你的飞行时间已经用完了！");
                }
            }
        }
    }

    @Override
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
        if (command.getName().equalsIgnoreCase("flighttime")) {
            if (sender instanceof Player) {
                Player player = (Player) sender;
                if (flightTimeMap.containsKey(player.getUniqueId())) {
                    int flightTime = flightTimeMap.get(player.getUniqueId());
                    int remainingTime = 1800 - flightTime;
                    int minutes = remainingTime / 60;
                    int seconds = remainingTime % 60;
                    player.sendMessage(ChatColor.GREEN + "你还有 " + minutes + " 分钟 " + seconds + " 秒的飞行时间");
                }
            } else {
                sender.sendMessage(ChatColor.RED + "只有玩家可以执行此命令！");
            }
            return true;
        }
        return false;
    }

    private void startCountdownTask() {
        new BukkitRunnable() {
            @Override
            public void run() {
                for (Player player : Bukkit.getOnlinePlayers()) {
                    if (flightTimeMap.containsKey(player.getUniqueId())) {
                        int flightTime = flightTimeMap.get(player.getUniqueId());
                        if (flightTime < 1800) {
                            flightTimeMap.put(player.getUniqueId(), flightTime + 1);
                        }
                    }
                }
            }
        }.runTaskTimer(this, 20L, 20L);
    }
}

这个插件会在玩家加入服务器时初始化飞行时间为0，并在玩家切换飞行模式时计算飞行时间。当飞行时间达到30分钟时，会禁用玩家的飞行模式并发送一条消息告知玩家飞行时间已用完。

你可以使用/flighttime命令来查看你还剩余多少飞行时间。