@EventHandler
public void onEntityDamageByEntityEvent(EntityDamageEvent event)
{
if(Math.random()<=0.02)
{
Entity e = event.getEntity();
int bleed = plugin.getServer().getScheduler().scheduleSyncRepeatingTask(plugin, new Runnable()
{
public void run()
{
//Two percent chance you will bleed
if(e instanceof Player)
{
Player player = (Player) e;
player.damage(1.0D);
player.addPotionEffect(new PotionEffect(PotionEffectType.CONFUSION, 200, 2));
player.sendMessage(ChatColor.RED + "You are bleeding, find a bandage and heal yourself");
public void onPlayerEvent(PlayerInteractEvent event) { //ERROR HAPPENS ON THIS LINE ON THE PARENTHESES
Player player = event.getPlayer();
Action act = event.getAction();
if(event.getAction() == act.RIGHT_CLICK_AIR) {
if(player.getItemInHand().getType() == Material.PAPER) {
plugin.getServer().getScheduler().cancelTask(bleed);
}
}
}
}
}
}, 20, 400);
}
}
我完全清楚我不允许在方法中使用方法，但我不知道有任何其他方法可以使其工作。
第7行的bleed变量应该与第22行的相同变量相对应
第二个事件应该取消第一个事件。
我得到的错误是：Syntax error on "(" , ; expected。
编辑：
@AndrewG所以，我测试了你的代码，它没有正常工作，这是我所拥有的类的全部来源：`
package com.aidan.TeamHeal;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.entity.Entity;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.Action;
import org.bukkit.event.entity.EntityDamageByEntityEvent;
import org.bukkit.event.entity.EntityDamageEvent;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.potion.PotionEffect;
import org.bukkit.potion.PotionEffectType;
public class BukkitListener implements Listener {
Map<UUID, Integer> bleed = new HashMap<UUID, Integer>();
public static Bukkit plugin;
public BukkitListener(Bukkit instance) {
plugin = instance;
}
@EventHandler
public void onEntityDamageByEntity(EntityDamageByEntityEvent event) {
if(Math.random() <1) {
Entity e = event.getEntity();
// Entity z = event.getDamager();
if(e instanceof Player) {
Player player = (Player) e;
player.addPotionEffect(new PotionEffect(PotionEffectType.BLINDNESS, 100, 1));
}
}
}
@EventHandler
public void onEntityDamageByEntityEvent(EntityDamageEvent event) {
if (Math.random() <= 1) {
final Entity e = event.getEntity();
int playersBleed = plugin.getServer().getScheduler().scheduleSyncRepeatingTask(plugin, new Runnable() {
public void run() {
// Two percent chance you will bleed
if (e instanceof Player) {
Player player = (Player) e;
player.damage(1.0D);
player.addPotionEffect(new PotionEffect(PotionEffectType.CONFUSION, 200, 2));
player.sendMessage(ChatColor.RED + "You are bleeding, find a bandage and heal yourself");
}
}
}, 20, 400);
bleed.put(e.getUniqueId(), new Integer(playersBleed));
}
}
// Don't forget the @EventHandler annotation here too!
@EventHandler
public void onPlayerEvent(PlayerInteractEvent event) {
Player player = event.getPlayer();
if (event.getAction() == Action.RIGHT_CLICK_AIR) {
if (player.getItemInHand().getType() == Material.PAPER) {
if(bleed.containsKey(player.getUniqueId())) {
Integer playersBleed = bleed.get(player.getUniqueId());
int playersBleedInt = playersBleed.intValue();
plugin.getServer().getScheduler().cancelTask(playersBleedInt);
player.sendMessage("YOu have been healed");
}
}
}
}
}
`
答案 0 :(得分：1)
这是Bukkit吗？如果您完全清楚方法中没有方法，为什么还有方法？
您的问题是您没有使用方法之外的变量。例如：
public class Bleed extends JavaPlugin {
// Put the variable here, so it can be accessed by all the methods in the class.
int bleed = 0; // Declare it here, use it elsewhere. We'll just have 0 as the default value.
@EventHandler
public void onEntityDamageByEntityEvent(EntityDamageEvent event) {
if (Math.random() <= 0.02) {
Entity e = event.getEntity();
// Don't declare it again, just assign a value to it.
bleed = plugin.getServer().getScheduler().scheduleSyncRepeatingTask(plugin, new Runnable() {
public void run() {
// Two percent chance you will bleed
if (e instanceof Player) {
Player player = (Player) e;
player.damage(1.0D);
player.addPotionEffect(new PotionEffect(PotionEffectType.CONFUSION, 200, 2));
player.sendMessage(ChatColor.RED + "You are bleeding, find a bandage and heal yourself");
}
}
}, 20, 400);
}
}
// Don't forget the @EventHandler annotation here too!
@EventHandler
public void onPlayerEvent(PlayerInteractEvent event) {
Player player = event.getPlayer();
Action act = event.getAction();
if (event.getAction() == act.RIGHT_CLICK_AIR) {
if (player.getItemInHand().getType() == Material.PAPER) {
// Assuming that the onEntityDamageByEntityEvent is called before this, bleed will have the value set in that method.
// Let's make sure that actually happened, and bleed isn't still 0.
if(bleed != 0) {
plugin.getServer().getScheduler().cancelTask(bleed);
}
}
}
}
}
我所做的更改主要是在类的范围内声明一个出血变量。 （在这里停下来阅读关于Java中变量范围的所有内容，它非常重要。）现在我们有一个两个方法都可以访问的变量，我们采用另一个方法，并将它放在应该的位置。我做的最后一件事就是确保我们只调用cancelTask()如果一个任务实际已被设置（意味着bleed内部有一些东西）使用{{ 1}}陈述。
现在这引入了另一个问题，如果玩家A开始流血，那么玩家B在玩家A停止之前就开始出血了？现在玩家B的任务存储在if中，玩家A已经消失。我们需要的是为每个出血的玩家存储不同的bleed变量。为此，我们可以使用HashMap。改变这个：
bleed到此：
int bleed = 0;
这会创建一个列表，因此我们可以在Integer对象旁边存储一个玩家的ID（因为我们不能在HashMap中使用原语，我们使用Integer对象）来表示它＆＃39;流血的任务。
然后，我们改变了这个：
Map<UUID, Integer> bleed = new HashMap<UUID, Integer>();
到此：
bleed = plugin.getServer().getScheduler().scheduleSyncRepeatingTask(plugin, new Runnable() {
public void run() {
// Two percent chance you will bleed
if (e instanceof Player) {
Player player = (Player) e;
player.damage(1.0D);
player.addPotionEffect(new PotionEffect(PotionEffectType.CONFUSION, 200, 2));
player.sendMessage(ChatColor.RED + "You are bleeding, find a bandage and heal yourself");
}
}
}, 20, 400);
这样做是从任务中获取int，将其放入新的Integer中，并将其放在玩家的ID旁边。然后我们改变这个：
int playersBleed = plugin.getServer().getScheduler().scheduleSyncRepeatingTask(plugin, new Runnable() {
public void run() {
// Two percent chance you will bleed
if (e instanceof Player) {
Player player = (Player) e;
player.damage(1.0D);
player.addPotionEffect(new PotionEffect(PotionEffectType.CONFUSION, 200, 2));
player.sendMessage(ChatColor.RED + "You are bleeding, find a bandage and heal yourself");
}
}
}, 20, 400);
bleed.put(player.getUniqueId(), new Integer(playersBleed));
为：
if(bleed != 0) {
plugin.getServer().getScheduler().cancelTask(bleed);
}
最后（呵呵），你需要改变这个：
if(bleed.containsKey(player.getUniqueId()) { // If that player is bleeding.
Integer playersBleed = bleed.get(player.getUniqueId());
int playersBleedInt = playersBleed.intValue();
plugin.getServer().getScheduler().cancelTask(playersBleedInt);
}
到此：
Entity e = event.getEntity();
这只允许runnable中的代码获取final Entity e = event.getEntity();
变量。
这一切都有意义吗？我知道我有点快......我很乐意在评论中再解释一下。 我希望有帮助，随时在评论中提出任何问题。
答案 1 :(得分：0)
你错过了一些花括号引起你的错误。
我基本上只是打开了你的一些方法，这个问题变得很明显。
你还有一个范围问题：
＆＃34;匿名类无法访问其封闭范围内未声明为final或者有效最终的局部变量。＆＃34; - http://docs.oracle.com/javase/tutorial/java/javaOO/anonymousclasses.html
^你会看到我在buildBleedHandler(final Entity e)中有一个决赛，它允许我的新Runnable访问该实体e。
您还需要使用BukkitRunnable将Runnable设为cancel itself。
以下是代码：
public class BukkitListener extends JavaPlugin {
public static Bukkit plugin;
private static BukkitScheduler scheduler;
final Float chanceYouWillBleed = 0.02f;
final long bleedDelay = 20;
final long bleedPeriod = 400;
public BukkitListener(Bukkit instance) {
plugin = instance;
scheduler = Bukkit.getServer().getScheduler();
}
public static void bleedAction(Player player) {
player.damage(1.0D);
player.addPotionEffect(new PotionEffect(PotionEffectType.CONFUSION, 200, 2));
player.sendMessage(ChatColor.RED + "You are bleeding, find a bandage and heal yourself");
}
BukkitRunnable buildBleedHandler(final Entity e) {
return new BukkitRunnable() {
public void run() {
if (e instanceof Player) {
bleedAction((Player) e);
}
}
@EventHandler
public void onPlayerEvent(PlayerInteractEvent event) {
if (event.getAction() == Action.RIGHT_CLICK_AIR &&
event.getPlayer().getItemInHand().getType() == Material.PAPER) {
cancel();
}
}
};
}
@EventHandler
public void onEntityDamageByEntityEvent(EntityDamageEvent event) {
if (Math.random() <= chanceYouWillBleed) {
Entity e = event.getEntity();
scheduler.scheduleSyncRepeatingTask(this, buildBleedHandler(e), bleedDelay, bleedPeriod);
}
}
}
答案 2 :(得分：0)
你把一个方法放在另一个方法里面，在另一个类里面！
在onPlayerEvent之后移动onEntityDamageByEntityEvent，并且不要忘记@EventHandler注释。
但首先，学习Java。如果不了解这种编程语言，就不能玩Bukkit。