Player sign interact

Question

I want to code a plugin for a plugin's bug.(ChestShop). When player right click sign(Sign's line 2 is "B Free" or "Free" and line 3 is "Iron_Ingot") cancel event and send message.

public void onPlayerInteract(PlayerInteractEvent e){
    Player player = e.getPlayer();
    if(e.getAction().equals(Action.RIGHT_CLICK_BLOCK) || e.getAction().equals(Action.LEFT_CLICK_BLOCK) ){
        if(e.getClickedBlock().getState() instanceof Sign){
            Sign sign = (Sign) e.getClickedBlock().getState();
            if(sign.getLine(2).equals("B Free") || sign.getLine(2).equals("Free")){
                if(sign.getLine(3).equals("Iron_Ingot"))
                e.setCancelled(true);
                e.getPlayer().sendMessage("You can not click this sign");

            }
        }
    }
}

I tried this but it didn't work, which part of the code is wrong? What methods can I use?

Answer 1

您的方法onPlayerInteract所在的类必须实现te接口Listener。您还必须使用EventHandler注释并在插件中注册该事件。

public class PlayerInteract implements Listener {

    // priority is when the listener is called.
    // LOWEST is called first, then LOW, NORMAL, HIGH, HIGHEST, MONITOR.
    @EventHandler(priority = EventPriority.NORMAL)
    public void onPlayerInteract(PlayerInteractEvent event) {
        // ...
    }

}

在Main类的onEnable中（扩展了JavaPlugin）：

getServer().getPluginManager().registerEvents(new PlayerInteract(),this);