在玩家改变世界时，用delai-Minecraft-java赠送物品

Question

我开始开发一个插件，当玩家以1秒的延迟改变世界时，它会提供物品。

否则，这些物品不会出现在玩家的热栏中。

出现了一个问题，如果在这一秒中，第二个玩家也改变了世界，那么物品将只给一个玩家(最后一个改变世界的玩家(。

Bw:我的服务器是1.14.4

这是我的代码：

float timerCount = 1.0F;
@EventHandler
public void onWorldSwitch(PlayerChangedWorldEvent event) {
Player player = event.getPlayer();
BukkitTask CountDownId;
ArrayList<Player> players = new ArrayList<Player>();
players.add(player);
timerCount = 1.0F;
CountDownId = Bukkit.getScheduler().runTask(plugin, new Runnable(){
public void run(){
if(timerCount == 1.0F) {
--timerCount;
}
else if(timerCount <= 0.0F) {
int i = 0;
player.sendMessage("Il est temps de te donner ton stuff");
while( i <= players.size()) {
player.sendMessage("while loop");
plugin.giveStuff(players.get(i));
players.clear();
}
stopCountdown();
timerCount = 5.0F;
}
}
});
player.sendMessage("world switch");
}

赠送物品：

public void giveStuff(Player player) {
ItemStack compass = new ItemStack(Material.COMPASS);
ItemMeta compassM = compass.getItemMeta();
compassM.setDisplayName("§5Navigation");
compass.setItemMeta(compassM);
switch(player.getWorld().getName()) {
case "lobby" :
player.getInventory().setItem(0, compass);
player.sendMessage("lobby");
break;
case "pvp":
player.getInventory().setItem(0, compass);
player.sendMessage("pvp");
break;
default:
break;
}
}

Answer 1

根据此页面，您可以运行匿名BukkitRunnable，这意味着无需创建带有名称的新类。这是我从你的代码中编辑的代码。我无法测试它，因为我没有足够的带宽下载打开服务器所需的文件。希望这能奏效。

package net.example;
import org.bukkit.Bukkit;
import org.bukkit.event.Listener;
import org.bukkit.plugin.java.JavaPlugin;
public class MyPlugin extends JavaPlugin implements Listener {
@Override
public void onEnable() {
Bukkit.getServer().getPluginManager().registerEvents(new MyListener(this),this);
}
}

这里是监听器类

package net.example;
import org.bukkit.Material;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerChangedWorldEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.scheduler.BukkitRunnable;
public class MyListener implements Listener {
private MyPlugin plugin; // A variable for your main method which extends JavaPlugin
//Here we are getting instance of our plugin. We need this because BukkitRunnable have to be registered on a plugin.
public MyListener(MyPlugin instance) {
plugin = instance; //Saving Myplugin instance to our "plugin" variable
}
@EventHandler
public void onWorldSwitch(PlayerChangedWorldEvent event) {
Player player = event.getPlayer();
// Create the task anonymously and schedule to run it once, after 20 ticks
new BukkitRunnable() {
@Override
public void run() {
// What you want to schedule goes here
giveStuff(player);
}
}.runTaskLater(plugin, 20); //Run this task(all the commands within run() method) after 20 server ticks(1 second)
}
public void giveStuff(Player player) {
ItemStack compass = new ItemStack(Material.COMPASS);
ItemMeta compassM = compass.getItemMeta();
compassM.setDisplayName("§5Navigation");
compass.setItemMeta(compassM);
player.getInventory().setItem(0, compass);
//        switch(player.getWorld().getName()) {
//            case "lobby" :
//                player.getInventory().setItem(0, compass);
//                player.sendMessage("lobby");
//                break;
//            case "pvp":
//                player.getInventory().setItem(0, compass);
//                player.sendMessage("pvp");
//                break;
//            default:
//                break;
}
}

有些陈述可能与OOP原则相冲突。这样做是为了增加清晰度。当你需要更多帮助时请告诉我。