java - bukkit - 等待？

Question

最近我开始开发一个 Bukkit 插件，我需要有关 hibernate/等待代码的帮助。我是 java 的新手，所以如果你能解释一下，我将不胜感激。这是我的代码:

@EventHandler
public void onTnt(PlayerInteractEntityEvent e) {
    Player clicker = e.getPlayer();
    Player rightclick = (Player) e.getRightClicked();
    rightclick.sendMessage(ChatColor.GRAY + "~" + ChatColor.DARK_PURPLE + "AN INSTAKILLER HAS YOU AS A TARGET! SNEAK NOW!");
    rightclick.sendMessage(ChatColor.GRAY + "~" + ChatColor.DARK_RED + "AN INSTAKILLER HAS YOU AS A TARGET! SNEAK NOW!");
    rightclick.sendMessage(ChatColor.GRAY + "~" + ChatColor.GOLD + "AN INSTAKILLER HAS YOU AS A TARGET! SNEAK NOW!");
    /* Then wait 3 sec. I've tried Thread.Sleep, wait() and sleep(), no sucess*/

    if (!(rightclick.isSneaking()))  {
        rightclick.sendMessage(ChatColor.GRAY + "~" + ChatColor.GOLD + "Bye bye.");
        rightclick.setHealth(0);

    }

}

Answer 1

虽然通常你会使用 Thread.sleep 做这样的事情，但这会卡住整个服务器，并且在那段时间内不会处理事件(所以即使玩家停止偷偷摸摸他们这边，他们仍然会从服务器看到的地方偷偷摸摸)。

您需要做的是使用 BukkitRunnable(或者常规的 Runnable 和 getServer().getScheduler().scheduleSyncDelayedTask) :

@EventHandler
public void onTnt(PlayerInteractEntityEvent e) {
    Player clicker = e.getPlayer();
    // Needs to be final to reference it later
    final Player rightclick = (Player) e.getRightClicked();
    rightclick.sendMessage(ChatColor.GRAY + "~" + ChatColor.DARK_PURPLE + "AN INSTAKILLER HAS YOU AS A TARGET! SNEAK NOW!");
    rightclick.sendMessage(ChatColor.GRAY + "~" + ChatColor.DARK_RED + "AN INSTAKILLER HAS YOU AS A TARGET! SNEAK NOW!");
    rightclick.sendMessage(ChatColor.GRAY + "~" + ChatColor.GOLD + "AN INSTAKILLER HAS YOU AS A TARGET! SNEAK NOW!");


    BukkitRunnable task = new BukkitRunnable() {
        @Override
        public void run() {
            if (!(rightclick.isSneaking()))  {
                rightclick.sendMessage(ChatColor.GRAY + "~" + ChatColor.GOLD + "Bye bye.");
                rightclick.setHealth(0);
            }
        }
    };
    // Run the task on this plugin in 3 seconds (60 ticks)
    task.runTaskLater(this, 20 * 3);
}