Java 升级完成后，您如何运行活动？

我正在尝试编写一个插件，在这个插件中，边界跟随一个玩家，每当他们获得提升时，就会加倍。问题是我不知道如何检测某人何时获得晋升并将其保持在同一班级。这是当前的代码

生存类

package sc458.survivalborders;
import org.bukkit.Bukkit;
import org.bukkit.World;
import org.bukkit.WorldBorder;
import org.bukkit.entity.Player;
import org.bukkit.event.HandlerList;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerAdvancementDoneEvent;
import org.bukkit.event.player.PlayerEvent;
import org.bukkit.plugin.java.JavaPlugin;

public class survivalBorders extends JavaPlugin {
    public void onEnable() {
        World world = Bukkit.getWorld("survival");
        WorldBorder border = world.getWorldBorder();
        double borderSize = border.getSize();

        while(true) {
            if(PlayerAdvancementDoneEvent) {
                border.setSize(borderSize*2);
            }
        }
    }
    public void onDisable() {

    }
}

MoveEvent.class

package sc458.survivalborders;
import org.bukkit.Bukkit;
import org.bukkit.World;
import org.bukkit.WorldBorder;
import org.bukkit.entity.Player;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerMoveEvent;

public class MoveEvent implements Listener {
    public void onMove(PlayerMoveEvent e) {
        Player p = e.getPlayer();
        World world = Bukkit.getWorld("survival");
        WorldBorder border = world.getWorldBorder();
        int locX = p.getLocation().getBlockX();
        int locZ = p.getLocation().getBlockZ();
        border.setCenter(locX, locZ);
    }
}

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尝试使用侦听器调用PlayerMoveEvent，然后您可以在他每次移动时（事件被触发）->再次设置边框。所以基本上当他的坐标改变时，边界会立即跟随你

public class MoveEvent implements Listener {
   @EventHandler
   public void onMove(PlayerMoveEvent e) {
     Player p = e.getPlayer();
     WorldBorder border = world.getWorldBorder();
     int locX = p.getLocation().getBlockX();
     int locZ = p.getLocation().getBlockZ();
     border.setCenter(locX, locZ);
   }
}