Bukkit插件编程之检测玩家受到的伤害是来自投射类武器还是近身武器

 package com.sklm.lhb.listener;

 import org.bukkit.entity.Arrow;
 import org.bukkit.entity.Player;
 import org.bukkit.entity.Projectile;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.entity.EntityDamageByEntityEvent;

 import com.sklm.lhb.combat.Combat;
 public class DamageListener implements Listener {
     public DamageListener(Combat plugin) {
         plugin.getServer().getPluginManager().registerEvents(this, plugin);
     }

     @EventHandler
     public void damage(EntityDamageByEntityEvent event) {
         if((event.getDamager() instanceof Player)&&(event.getEntity() instanceof Player)) {
                 boolean fb_pvp = DamageUtil.getIsPVP("FB");
                 Player player = (Player) event.getDamager();
                 if((player.getWorld().getName()).equals("FB")){
                     if((event.getDamager() instanceof Player)&&(event.getEntity() instanceof Player)) {
                         Player player_self = (Player) event.getDamager();
                         boolean b = DamageUtil.isCommonGroup((Player)event.getEntity(), player_self);
                         String pvp_world = DamageUtil.getWorld_name();
                         if(b) {
                             event.setCancelled(true);
                             return ;
                         }else {
                             event.setCancelled(false);
                         }
                     }
                 }
                 if((player.getWorld().getName()).equals("ZC")) {
                     if((event.getDamager() instanceof Player)&&(event.getEntity() instanceof Player)) {
                         if(event.getDamager() instanceof Arrow) {
                             event.setCancelled(true);
                         }
                         event.setCancelled(true);
                         return ;
                     }else {
                         event.setCancelled(false);
                     }
                 }
         }else {
             //检测受到的伤害是否为投射物（弓箭，枪之类的伤害）
             if(event.getDamager() instanceof Projectile) {
                 if((event.getDamager() instanceof Projectile)&&(event.getEntity() instanceof Player)) {
                         boolean fb_pvp = DamageUtil.getIsPVP("FB");
                         Player player = (Player) ((Projectile) event.getDamager()).getShooter();
                         if((player.getWorld().getName()).equals("FB")){
                             if((event.getDamager() instanceof Projectile)&&(event.getEntity() instanceof Player)) {
                                 Player player_self = (Player) ((Projectile) event.getDamager()).getShooter();
                                 boolean b = DamageUtil.isCommonGroup((Player)event.getEntity(), player_self);
                                 String pvp_world = DamageUtil.getWorld_name();
                                 if(b) {
                                     event.setCancelled(true);
                                     return ;
                                 }else {
                                     event.setCancelled(false);
                                 }
                             }
                         }
                         if((player.getWorld().getName()).equals("ZC")) {
                             if((event.getDamager() instanceof Projectile)&&(event.getEntity() instanceof Player)) {
                                 event.setCancelled(true);
                                 return ;
                             }else {
                                 event.setCancelled(false);
                             }
                         }
                 }
             }
         }

     }

 }

注意在检测玩家受到的伤害时候，近身类武器可以直接通过event.getDamager() instanceof Player 来判断是否受到伤害，但是在检测是否受到投掷类伤害的时候要通过event.getDamager instanceof Projectile来判断是否受到来自投掷类武器的伤害