java 有没有办法将数据附加到 Bukkit ItemStack？
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Is there a way to attach data to a Bukkit ItemStack?
提问by Tom
Ok, I am trying to attach data to a Minecraft Bukkit ItemStack. I would like it so the entity that it drops would also have it, but that is optional. If I can not do this directly, is there some other way I can keep a piece of data (java int, java string) with the item as it moves through players and their inventory slots? Thanks!
好的，我正在尝试将数据附加到 Minecraft Bukkit ItemStack。我想要它，所以它掉落的实体也会拥有它，但这是可选的。如果我不能直接执行此操作，是否有其他方法可以在该项目通过玩家及其库存槽时保留一条数据（java int、java string）？谢谢！
EDIT: Here's a code example.
编辑：这是一个代码示例。
package path.to.the.package;
import org.bukkit.event.*;
import org.bukkit.event.PlayerInteractEvent;
import org.bukkit.plugin.java.JavaPlugin;
public ExamplePlugin extends JavaPlugin
{
public List<ItemStack> stacks = new ArrayList<ItemStack>();
public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args)
{
if(cmd.getName().equalsIgnoreCase("tester123"))
{
ItemStack stack = new ItemStack(272, 0, (byte)0);
Player p = (Player)sender;
stacks.add(stack);
p.getLocation().getWorld().dropItem(player.getLocation(), stack);
}
return true;
}
@EventHandler(priority = EventPriority.HIGHEST)
public void onItemStackRightClick(PlayerInteractEvent e)
{
Player player = e.getPlayer();
for(ItemStack item : items)
{
if(player.getItemInHand() == item)
{
//What I DO want is something like: if(item.getPluginData(this, "KEY") == "SPECIAL")
//And I would have set it like: item.setPluginData(this, "KEY", "SPECIAL");
player.sendMessage("You got one of our SPECIAL stone swords!!!!");
}
}
}
}
I whipped up this example but it does not work when I right click with the one special sword.
我提出了这个例子，但是当我用一把特殊的剑右键单击时它不起作用。
回答by Mark Lalor
I would use ItemStack.getItemMeta() to set the lore value:
我会使用 ItemStack.getItemMeta() 来设置绝杀值：
import java.util.ArrayList;
import java.util.List;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.*;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.plugin.java.JavaPlugin;
public class ExamplePlugin extends JavaPlugin
{
public List<ItemStack> stacks = new ArrayList<ItemStack>();
public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args)
{
if(cmd.getName().equalsIgnoreCase("tester123"))
{
ItemStack stack = new ItemStack(272, 0, (byte)0);
Player p = (Player)sender;
stacks.add(stack);
ItemMeta i = stack.getItemMeta();
List<String> lore = new ArrayList<String>();
lore.add("Special");
i.setLore(lore);
p.getLocation().getWorld().dropItem(((Player)sender).getLocation(), stack);
}
return true;
}
@EventHandler(priority = EventPriority.HIGHEST)
public void onItemStackRightClick(PlayerInteractEvent e)
{
Player player = e.getPlayer();
if(player.getItemInHand().getItemMeta().hasLore())
{
if (player.getItemInHand().getItemMeta().getLore().get(0).equals("Special"))
{
player.sendMessage("You got one of our SPECIAL stone swords!!!!");
}
}
}
}
回答by cringe
There is the http://jd.bukkit.org/apidocs/org/bukkit/metadata/Metadatable.htmlwhere you can store your data in a key-value way. Looks like it already provides an interface to store/retrieve data.
有http://jd.bukkit.org/apidocs/org/bukkit/metadata/Metadatable.html，您可以在其中以键值方式存储数据。看起来它已经提供了一个接口来存储/检索数据。
回答by Alexandre Daubricourt
If you want to store invisible data (insteed of lore), just use metadata:
如果你想存储不可见的数据（而不是传说），只需使用metadata：
Good article from Samer Alsayegh -> http://sameralsayegh.com/how-to-use-metadata/
来自 Samer Alsayegh 的好文章 -> http://sameralsayegh.com/how-to-use-metadata/
