Question

感谢所有帮助我的人！我现在会更详细。我想要做的是一个Bukkit插件，一分钟之后，如果播放器掉了东西，控制台会显示一条信息消息，比如“玩家正在移动”，但我可以让第一条消息显示出来：“玩家掉了东西”我认为错误在我使用的布尔值上。拜托，任何人都可以帮助我使用bukkit吗？这是我的代码：

public class HgCake extends JavaPlugin implements Listener{
    boolean reference = false;
    @Override
    public void onEnable() {
        Bukkit.getServer().getPluginManager().registerEvents(this, this);
    }

    @EventHandler
    public void onDropItem (PlayerDropItemEvent e) {
        getLogger().info("Player dropped something");
        reference = true;
    }

    public void onPlayerMove (PlayerMoveEvent e){
        if (reference = true){
            getLogger().info("Players are moving");
        }
    }
}

Answer 1

Bukkit有一个内置的调度系统，您可以阅读 Scheduler Programming

使用它而不是普通的Java计时器，相信我。从长远来看，它会让你的生活更轻松。

要执行您想要执行的操作，您需要BukkitRunnable课程才能提供给调度程序。

这是一个我为了示例目的而过度简化的通用词：

public class Callback extends BukkitRunnable{
        private Object targetObject;
        public Method targetMethod;
        private Object[] perameters;

        public Callback(Object targetObject, String methodName, Object[] argsOrNull){
                try {
                    this.targetMethod = targetObject.getClass().getMethod(methodName, (Class<?>[]) argsOrNull);
                } catch (Exception e){
                    e.printStackTrace();
                }
                this.targetObject = targetObject;
                this.perameters = argsOrNull;
        }

        public void run(){
                try {
                    this.targetMethod.invoke(this.targetObject,perameters);
                } catch (Exception e){
                    e.printStackTrace();
                }
        }
}

然后你创建一个runnable的对象，将回调方法/ props作为args提供给调度程序，使其在60秒内运行：

对于运动部分，您只需在物品掉落且没有人移动的情况下观察它。

public class DropWatcher implements Listener {
    private Boolean hasAnythingMoved;
    private Boolean dropped;
    private Pwncraft plugin;
    private Player player;

    public DropWatcher(Pwncraft plugin, Player player){
        this.player = player;
        this.hasAnythingMoved = false;
        this.dropped = false;
        this.plugin = plugin;
        this.plugin.pluginManager.registerEvents(this, plugin);
    }

    //Drop event listener: When the player drops an item, it sets dropped to true, and initiates the countdown.
    @EventHandler
    public void onDropItem (PlayerDropItemEvent e) {
        if(e.getPlayer().equals(this.player) && !this.dropped){
            this.dropped = true;
            BukkitCallbackTask doInSixtySeconds = new BukkitCallbackTask(this, "timesUp" , null);
            doInSixtySeconds.runTaskLater(plugin, 1200); // time is in ticks (20 ticks +/- = 1 sec), so 1200 ticks = 1 min.
        }
    }

    //Watches for other-players' movement, and sets hasAnythingMoved to true if so.
    @EventHandler
    public void onMove (PlayerMoveEvent e){
        if(!e.getPlayer().equals(this.player) && this.dropped && !this.hasAnythingMoved){
            this.hasAnythingMoved = true;
        }
    }

    /*
    This is the method the runnable calls when the timer is up.
    It checks for movement, and if so, sends a message and explodes the player 
    (Just because it can. You're welcome to veto the explosion.) 
    */
    public void timesUp(){

        if(this.hasAnythingMoved){
            this.player.sendMessage("Someone moved! Time to party!");
            this.player.getWorld().createExplosion(this.player.getLocation(), 5F);
            this.dropped = false;
            this.hasAnythingMoved = false;
        }
    }
}

Answer 2

我忘记了我认为的PlayerMoveEvent的@EventHandler。

应该是：

public class HgCake extends JavaPlugin implements Listener{
boolean reference = false;
@Override
public void onEnable() {
    Bukkit.getServer().getPluginManager().registerEvents(this, this);
}

@EventHandler
public void onDropItem (PlayerDropItemEvent e) {
    getLogger().info("Player dropped something");
    reference = true;
}

@EventHandler
public void onPlayerMove (PlayerMoveEvent e){
    if (reference = true){
        getLogger().info("Players are moving");
    }
}

}

Answer 3

    int plannedActivity = getServer().getScheduler().runTaskLaterAsynchronously(this, new Runnable() {

        public void run() {

            //whatever you want to do

        }

    }, 120L);

如何在60秒后在bukkit中发送消息？

3 个答案: