我试图将所有在线玩家设置为游戏模式0（生存）（我做一个varo插件）
以下是my code：
package com.abgelutscht.varo;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.GameMode;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;
public class Main extends JavaPlugin{
private int gamemode = 2;
private int countdown = 30;
private boolean countdownStarted = false;
private boolean started = false;
private Timer count = new Timer();
private TimerTask count2 = new TimerTask(){
public void run(){
if(countdown>0){
Bukkit.broadcastMessage(blue+"Noch "+aqua+countdown+blue+" Sekunden bis zum Start!");
countdown--;
}
else{
Bukkit.broadcastMessage(blue+"Los gehts!");
startVaro();
count.cancel();
}
}
};
private List<String[]> teams = new ArrayList<String[]>();
public static final ChatColor dRed = ChatColor.DARK_RED;
public static final ChatColor red = ChatColor.RED;
public static final ChatColor aqua = ChatColor.AQUA;
public static final ChatColor dAqua = ChatColor.DARK_AQUA;
public static final ChatColor blue = ChatColor.BLUE;
public static final ChatColor yellow = ChatColor.YELLOW;
public static final ChatColor white = ChatColor.WHITE;
private final String teamCommands = red+"Team-Befehle:\n"+blue
+ "/team " + dRed + "create " + red + "<" + aqua + "Teamname" + red + ">" + blue + "\n"
+ "/team " + dRed + "create " + red + "<" + aqua + "Teamname" + red + "> " + blue + red+ "<"+ dAqua+ "Spieler1" + red + "> " + blue + red+ "<"+ dAqua+ "Spieler2" + red + ">" + blue+ "\n"
+ "/team " + dRed + "add " + red + "<" + aqua + "Teamname" + red + ">" + blue + " "+ red+ "<"+ dAqua+ "Spieler" + red + ">" + blue + "\n"
+ "/team " + dRed + "remove " + red + "<" + aqua + "Teamname" + red + ">" + blue + " "+ red+ "<"+ dAqua+ "Spieler" + red + ">" + blue + "\n"
+ "/team " + dRed + "delete " + red + "<" + aqua + "Teamname" + red + ">" + blue;
@Override
public void onEnable(){
new PlayerListener(this);
loadConfig();
System.out.println("varo-plugin by abgelutscht enabled");
}
@Override
public void onDisable(){
writeConfig();
System.out.println("varo-plugin by abgelutscht disabled");
}
private void loadConfig(){
this.getConfig().options().copyDefaults(true);
this.saveConfig();
for(int i = 0; i < this.getConfig().getInt("length"); i++){
List<String> list = new ArrayList<String>();
list = getConfig().getStringList(String.format("%s", i));
String[] team = new String[3];
if(list.size()==1){
team[0] = list.get(0);
}
else if(list.size()==2){
team[0] = list.get(0);
team[1] = list.get(1);
}
else if(list.size()==3){
team[0] = list.get(0);
team[1] = list.get(1);
team[2] = list.get(2);
}
teams.add(team);
}
if(this.getConfig().getInt("countdown")!=0){
countdown = this.getConfig().getInt("countdown");
}
started = this.getConfig().getBoolean("started");
if(started){
gamemode = 0;
}
if(!started){
gamemode = 2;
}
}
private void writeConfig(){
this.getConfig().set("countdown", countdown);
this.getConfig().set("started", started);
this.getConfig().set("length", teams.size());
for(int i = 0; i<teams.size(); i++){
this.getConfig().set(""+i, teams.get(i));
}
this.getConfig().options().copyDefaults(true);
this.saveConfig();
}
@Override
public boolean onCommand(CommandSender sender, Command command, String label, String[] args){
Player player = null;
if(sender instanceof Player){
player = (Player) sender;
}
if(command.getName().equalsIgnoreCase("team")){
if(player.isOp()){
if(!(args.length==0 || args.length>4)){
if(args.length==1){
if(args[0].equals("list")){
if(teams.size()!=0){
player.sendMessage(red+"Die Teams:\n");
for(int i = 0; i<teams.size(); i++){
player.sendMessage(aqua+teams.get(i)[0]+blue+" "+teams.get(i)[1]+" "+teams.get(i)[2]+"\n");
}
}
else{
player.sendMessage(dRed+"[Fehler] Es existieren keine Teams!");
}
}
}
else if(args.length==2){
if(args[0].equals("create")){
if(!teamExisting(args[1])){
String[] team = new String[3];
team[0] = args[1];
teams.add(team);
player.sendMessage(blue+"Das Team "+aqua+args[1]+blue+" wurde erstellt");
}
else{
player.sendMessage(dRed+"[Fehler] Das Team "+aqua+args[1]+dRed+" existiert bereits!");
}
}
else if(args[0].equals("remove")){
for(int i = 0; i<teams.size(); i++){
if(teams.get(i)[0].equals(args[1])){
teams.remove(i);
player.sendMessage(blue+"Das Team "+aqua+args[1]+blue+" wurde entfernt!");
}
}
if(teamExisting(args[1])){
player.sendMessage(dRed+"[Fehler] Das Team "+aqua+args[1]+dRed+" existiert nicht!");
}
}
}
else if(args.length==3){
if(args[0].equals("add")){
for(int i = 0; i<teams.size(); i++){
if(teams.get(i)[0].equals(args[1])){
if(teams.get(i)[1]!=null && teams.get(i)[2]!=null){
player.sendMessage(dRed+"[Fehler] Das Team "+aqua+args[1]+dRed+" ist voll!");
}
else if(teams.get(i)[1]==null && teams.get(i)[2]==null){
if(!playerExisting(args[2])){
teams.get(i)[1] = args[2];
player.sendMessage(blue+"Der Spieler "+aqua+args[2]+blue+" wurde zum Team "+aqua+args[1]+blue+" hinzugefügt!");
}
else{
player.sendMessage(dRed+"[Fehler] Der Spieler "+aqua+args[2]+dRed+" ist bereits in einem anderen Team!");
}
}
else if((teams.get(i)[1]!=null && teams.get(i)[2]==null) && !teams.get(i)[1].equals(args[2])){
if(!playerExisting(args[2])){
teams.get(i)[2] = args[2];
player.sendMessage(blue+"Der Spieler "+aqua+args[2]+blue+" wurde zum Team "+aqua+args[1]+blue+" hinzugefügt!");
}
else{
player.sendMessage(dRed+"[Fehler] Der Spieler "+aqua+args[2]+dRed+" ist bereits in einem anderen Team!");
}
}
else if((teams.get(i)[1]!=null && teams.get(i)[2]==null) && teams.get(i)[1].equals(args[2])){
player.sendMessage(dRed+"[Fehler] Der Spieler "+aqua+args[2]+dRed+" ist bereits in dem Team");
}
}
}
if(!teamExisting(args[1])){
player.sendMessage(dRed+"[Fehler] Das Team "+aqua+args[1]+dRed+" existiert nicht!");
}
}
else if(args[0].equals("remove")){
for(int i = 0; i<teams.size(); i++){
if(teams.get(i)[0].equals(args[1])){
if(teams.get(i)[1]==null && teams.get(i)[2]==null){
player.sendMessage(dRed+"[Fehler] Das Team "+aqua+args[1]+blue+" ist leer!");
}
else if(teams.get(i)[1]!=null && teams.get(i)[2]!=null){
if(args[2].equals(teams.get(i)[1])){
teams.get(i)[1] = teams.get(i)[2];
teams.get(i)[2] = null;
player.sendMessage(blue+"Der Spieler "+aqua+args[2]+blue+" wurde aus dem Team "+aqua+args[1]+blue+" entfernt!");
}
else if(args[2].equals(teams.get(i)[2])){
teams.get(i)[2] = null;
player.sendMessage(blue+"Der Spieler "+aqua+args[2]+blue+" wurde aus dem Team "+aqua+args[1]+blue+" entfernt!");
}
}
else if((teams.get(i)[1]!=null && teams.get(i)[2]==null) && teams.get(i)[1].equals(args[2])){
teams.get(i)[1] = null;
player.sendMessage(blue+"Der Spieler "+aqua+args[2]+blue+" wurde aus dem Team "+aqua+args[1]+blue+" entfernt!");
}
else if(!args[2].equals(teams.get(i)[1]) && !args[2].equals(teams.get(i)[2])){
player.sendMessage(dRed+"[Fehler] Der Spieler "+aqua+args[2]+dRed+" ist nicht in dem Team!");
}
}
}
if(!teamExisting(args[1])){
player.sendMessage(dRed+"[Fehler] Das Team "+aqua+args[1]+dRed+" existiert nicht!");
}
}
}
else if(args.length==4){
if(args[0].equalsIgnoreCase("create")){
if(args[2]!=args[3] && (!playerExisting(args[2]) && !playerExisting(args[3])) && !args[2].equals(args[3])){
if(!teamExisting(args[1])){
String[] team = new String[3];
team[0] = args[1];
team[1] = args[2];
team[2] = args[3];
teams.add(team);
player.sendMessage(blue+"Das Team "+aqua+args[1]+blue+" wurde erstellt");
}
else{
player.sendMessage(dRed+"[Fehler] Das Team "+aqua+args[1]+dRed+" existiert bereits!");
}
}
else if(args[2].equals(args[3])){
player.sendMessage(dRed+"[Fehler] Die Spieler "+aqua+args[2]+dRed+" und "+aqua+args[3]+dRed+" sind identisch!");
}
}
}
}
else{
player.sendMessage(teamCommands);
}
}
else{
player.sendMessage(dRed+"[Fehler] Du hast nicht die nötigen Rechte, diesen Befehl auszuführen!");
}
}
if(command.getName().equalsIgnoreCase("countdown")){
if(args.length==1){
if(args[0].equals("start")){
if(!countdownStarted && !started){
countdownStarted = true;
count.schedule(count2, 0, 1000);
}
else{
player.sendMessage(dRed+"[Fehler] Der Countdown ist bereits gestartet worden!");
}
}
}
else if(args.length==2){
if(args[0].equals("set")){
if(!countdownStarted && !started){
try{
if(Integer.parseInt(args[1])<=0){
player.sendMessage(dRed+"[Fehler] Die Eingabe "+aqua+args[1]+dRed+" ist ungültig!");
}
else{
countdown = Integer.parseInt(args[1]);
player.sendMessage(blue+"Der Countdown wurde auf "+aqua+args[1]+blue+" gesetzt!");
}
}
catch(Exception e){
player.sendMessage(dRed+"[Fehler] Die Eingabe "+aqua+args[1]+dRed+" ist ungültig!");
}
}
else{
player.sendMessage(dRed+"[Fehler] Der Countdown ist bereits gestartet worden!");
}
}
}
}
return true;
}
private boolean playerExisting(String player){
for(int i = 0; i<teams.size(); i++){
try{
for(int i2 = 0; i2<teams.get(i).length; i++){
if(player.equals(teams.get(i)[i2])){
return true;
}
}
}
catch(Exception e){}
}
return false;
}
private boolean teamExisting(String team){
for(int i = 0; i<teams.size(); i++){
if(team.equals(teams.get(i)[0])){
return true;
}
}
return false;
}
private void startVaro(){
started = true;
for(Player player: this.getServer().getOnlinePlayers()){
player.setGameMode(GameMode.SURVIVAL);
}
}
public List<String[]> getTeams(){
return teams;
}
public int getGamemode(){
return gamemode;
}
}
如果我开始倒计时并且方法startVaro（）被调用，我得到an error：
Exception in thread "Timer-0"
[20:04:39 WARN]: java.lang.IllegalStateException: Asynchronous player tracker update!
[20:04:39 WARN]: at org.spigotmc.AsyncCatcher.catchOp(AsyncCatcher.java:14)
[20:04:39 WARN]: at net.minecraft.server.v1_8_R3.EntityTrackerEntry.updatePlayer(EntityTrackerEntry.java:313)
[20:04:39 WARN]: at net.minecraft.server.v1_8_R3.EntityTracker.a(EntityTracker.java:207)
[20:04:39 WARN]: at net.minecraft.server.v1_8_R3.EntityPlayer.B(EntityPlayer.java:1041)
[20:04:39 WARN]: at net.minecraft.server.v1_8_R3.EntityPlayer.updateAbilities(EntityPlayer.java:934)
[20:04:39 WARN]: at net.minecraft.server.v1_8_R3.PlayerInteractManager.setGameMode(PlayerInteractManager.java:36)
[20:04:39 WARN]: at org.bukkit.craftbukkit.v1_8_R3.entity.CraftPlayer.setGameMode(CraftPlayer.java:759)
[20:04:39 WARN]: at com.x.varo.Main.startVaro(Main.java:304)
[20:04:39 WARN]: at com.x.varo.Main.access$2(Main.java:300)
[20:04:39 WARN]: at com.x.varo.Main$1.run(Main.java:31)
[20:04:39 WARN]: at java.util.TimerThread.mainLoop(Unknown Source)
[20:04:39 WARN]: at java.util.TimerThread.run(Unknown Source)
为什么我有这个错误？我该如何解决？
答案 0 :(得分：0)
问题的原因是你试图异步更改播放器状态（相对于Bukkit的主线程）。有关如何安排单个或重复Bukkit任务的详细信息，请查看Scheduler Programming。我相信您最感兴趣的方法是scheduleSyncDelayedTask()