Minecraft bukkit插件右键单击项

Question

我正在为一个服务器做一个插件，我是开发者，我正在开发一个插件！我想通过执行boss give lvl命令来生成boss鸡蛋

@EventHandler
public void onPlayerClicks(PlayerInteractEvent event) {
    Player player = event.getPlayer();
    Action action = event.getAction();

     if (action.equals(Action.RIGHT_CLICK_AIR) || action.equals(Action.RIGHT_CLICK_BLOCK)) {
         if (player.getItemInHand().getType() == Material.SLIME_BALL) {
             player.sendMessage("You have right click a slime ball!");
         } 
     }

}

Answer 1

也许可以使用action==代替action.equals（），如下所示：

if (action == Action.RIGHT_CLICK_AIR || action == Action.RIGHT_CLICK_BLOCK) {
     if (player.getItemInHand().getType() == Material.SLIME_BALL) {
         player.sendMessage("You have right click a slime ball!");
     } 
 }

Answer 2

鉴于您在日志中没有看到任何堆栈跟踪，我同意您的事件侦听器没有注册。假设您的侦听器类名为MyEventHandler，它将在方法中注册，类似于

class MyPlugin extends JavaPlugin {
    ...
    public void onEnable() {
        Listener myEvtHnd = new MyEventHandler();
        Bukkit.getPluginManager().registerEvents( myEvtHnd, this );
        ...
    }
}

一般来说，您的处理程序看起来很合适PlayerInteractEvent提供了一种方便的方法，返回玩家手中的当前物品。但是，无论使用哪种方法，都必须检查返回的项目堆栈是否为空，如果玩家手中没有项目，则会发生这种情况。

@EventHandler
public void onPlayerClicks(PlayerInteractEvent event) {
    Player player = event.getPlayer();
    Action action = event.getAction();
    ItemStack item = event.getItem();

     if ( action.equals( Action.RIGHT_CLICK_AIR ) || action.equals( Action.RIGHT_CLICK_BLOCK ) ) {
         if ( item != null && item.getType() == Material.SLIME_BALL ) {
             player.sendMessage( "You have right click a slime ball!" );
         } 
     }

}