Question

今天我试图制作一个插件，它会产生一匹骷髅马，并且会在马周围形成火焰粒子。我把那部分放下了，但是每当有人杀死骨马时，火颗粒就会停留在那里。有人请帮忙吗？

我的代码（2个类）：

package survivalcraft.FireHorse;
import java.util.logging.Logger;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.plugin.PluginDescriptionFile;
import org.bukkit.command.CommandSender;
import org.bukkit.command.Command;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Horse.Variant;
import org.bukkit.entity.Player;
import org.bukkit.entity.Horse;
import org.bukkit.inventory.HorseInventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.ChatColor;
import org.bukkit.Bukkit;
import org.bukkit.Material;

public class Main extends JavaPlugin{
public static Main plugin;
public final Logger logger = Logger.getLogger("Minecraft");

@Override
public void onDisable(){
    PluginDescriptionFile pdf = this.getDescription();
    this.logger.info(pdf.getName() + " version " + pdf.getVersion() + " has been disabled! Neigh! ;D");
}

@Override
public void onEnable(){
    PluginDescriptionFile pdf = this.getDescription();
    this.logger.info(pdf.getName() + " version " + pdf.getVersion() + " has been enabled! Neigh! ;D");
}

@Override
public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String[] args){
    Player player = (Player) sender;
    if(sender instanceof Player){
        if(player.hasPermission("firehorse.spawn")){
            if(commandLabel.equalsIgnoreCase("firehorse") || commandLabel.equalsIgnoreCase("fh")){
                if(args.length == 0){
                    Horse horse = (Horse) player.getWorld().spawnEntity(player.getLocation(), EntityType.HORSE);
                    HorseInventory horseinv = null;
                    ItemStack saddle = new ItemStack(Material.SADDLE);
                    horse.setVariant(Variant.SKELETON_HORSE);
                    horse.setCustomName(player.getDisplayName() + "'s Fire Horse");                     
                    horse.setTamed(true);
                    horseinv.setSaddle(saddle);
                    Bukkit.getScheduler().scheduleSyncRepeatingTask(this, new HorseTimer(horse), 0l, 5l);
                }else{
                    player.sendMessage(ChatColor.RED + "Usage: /firehorse");
                }
            }
        }else{
            player.sendMessage(ChatColor.RED + "You can't spawn a fire horse!");
        }
    }else{
        player.sendMessage(ChatColor.RED + "You must be a player in order to spawn a fire horse!");
    }   
    return false;
}   
}

第二课：

package survivalcraft.FireHorse;

import org.bukkit.Effect;
import org.bukkit.entity.Horse;

public class HorseTimer implements Runnable{
private Horse horse;

public HorseTimer(Horse horse){
    this.horse = horse;
}

@Override
public void run(){
    horse.getWorld().playEffect(horse.getLocation(), Effect.MOBSPAWNER_FLAMES, 0);
}
}

Answer 1

第一：检查一匹马是否像@Momo一样活着，经过@CrypticStorm的小修正

第二： HorseTimer类应该扩展 BukkitRunnable而不是实现Rumnable，因此它可以取消自己见http://wiki.bukkit.org/Scheduler_Programming#Self-Canceling_Example_2

Answer 2

您应该将scheduleSyncRepeatingTask更改为runTaskTimer，因为这是正确的方法。返回一个表示其id的int，您可以存储该句号，然后在收听Bukkit.getScheduler().cancelTask(int id)时调用EntityDeathEvent。

Answer 3

对不起所有的代码，但这应该完成工作，它存储任务ID和马id在后期使用取消基于马死亡的任务。

public class Main extends JavaPlugin{
public static Main plugin;
public final Logger logger = Logger.getLogger("Minecraft");

@Override
public void onDisable(){
    PluginDescriptionFile pdf = this.getDescription();
    this.logger.info(pdf.getName() + " version " + pdf.getVersion() + " has been disabled! Neigh! ;D");
    Bukkit.getServer().getPluginManager().registerEvents(this, this);
}

@Override
public void onEnable(){
    PluginDescriptionFile pdf = this.getDescription();
    this.logger.info(pdf.getName() + " version " + pdf.getVersion() + " has been enabled! Neigh! ;D");
}

Map<UUID, Integer> tasks = new HashMap<UUID, Integer>();
@Override
public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String[] args){
    Player player = (Player) sender;
    if(sender instanceof Player){
        if(player.hasPermission("firehorse.spawn")){
            if(commandLabel.equalsIgnoreCase("firehorse") || commandLabel.equalsIgnoreCase("fh")){
                if(args.length == 0){
                    Horse horse = (Horse) player.getWorld().spawnEntity(player.getLocation(), EntityType.HORSE);
                    HorseInventory horseinv = null;
                    ItemStack saddle = new ItemStack(Material.SADDLE);
                    horse.setVariant(Variant.SKELETON_HORSE);
                    horse.setCustomName(player.getDisplayName() + "'s Fire Horse");                     
                    horse.setTamed(true);
                    horseinv.setSaddle(saddle);
                    int id = Bukkit.getScheduler().scheduleSyncRepeatingTask(this, new HorseTimer(horse), 0l, 5l);
                    tasks.put(horse.getUniqueId(), id);
                }else{
                    player.sendMessage(ChatColor.RED + "Usage: /firehorse");
                }
            }
        }else{
            player.sendMessage(ChatColor.RED + "You can't spawn a fire horse!");
        }
    }else{
        player.sendMessage(ChatColor.RED + "You must be a player in order to spawn a fire horse!");
    }   
    return false;
} 

    Map<UUID, Integer> map = null;
    @EventHandler
    public void handleDeaths(EntityDeathEvent event){
        for(UUID id : map.keySet())
            if(event.getEntity().getUniqueId().equals(id))
                Bukkit.getServer().getScheduler().cancelTask(map.get(id));
    }

}

Answer 4

在run（）方法中添加此检查：

if (!horse.isDead()) {
    // Spawn particles
}

这样可以防止颗粒产生死马。

当马在Bukkit死亡时停止Bukkit循环和记录

4 个答案: