如果他们右键点击一个幽冥星，我试图让玩家不能被损坏。然后，只要int damagetime，它们就无法受到损坏。这是我的代码：
public class MineSurvival extends JavaPlugin implements Listener{
private HashMap<String, Long> lastUsage = new HashMap<String, Long>();
private HashMap<String, Integer> daysMap = new HashMap<>();
private HashMap<String, Long> damage = new HashMap<>();
private HashMap<String, Boolean> killable = new HashMap<>();
private final int cdtime = 10;
private final int damagetime = 10;
@Override
public void onEnable(){
getServer().getPluginManager().registerEvents(this, this);
getConfig();
for(String str:getConfig().getKeys(true)) {
int p = getConfig().getInt(str);
daysMap.put(str, p);
}
saveConfig();
}
@Override
public void onDisable(){
for(Entry<String, Integer> pointstostore: daysMap.entrySet()) {
getConfig().set(pointstostore.getKey(), pointstostore.getValue());
}
saveConfig();
}
public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String[] args){
final Player player = (Player) sender;
Integer days = this.daysMap.get(player.getName());
PermissionUser user = PermissionsEx.getUser(player);
if(commandLabel.equalsIgnoreCase("days")){
if(player.hasPermission("minesurvival.days") || player.hasPermission("minesurvival.hcdays")){
long lastUsed = 0;
if(lastUsage.containsKey(player.getName())){
lastUsed = lastUsage.get(player.getName());
}
long cdmillis = System.currentTimeMillis() + (cdtime * 1000);;
if(System.currentTimeMillis()-lastUsed>=cdmillis){
if(daysMap.containsKey(player.getName())){
days++;
this.daysMap.put(player.getName(), days);
player.sendMessage(ChatColor.RED + "You have stayed alive for " + ChatColor.BLUE + days + ChatColor.RED + " days!");
getServer().dispatchCommand(getServer().getConsoleSender(), "pex user " + player.getName() + " prefix &c[&b" + days + "&c]");
lastUsage.put(player.getName(), System.currentTimeMillis());
}
else if(daysMap.containsKey(player.getName())){
if(days==10 || days==99){
days++;
this.daysMap.put(player.getName(), days);
Bukkit.broadcastMessage(ChatColor.GREEN +(player.getDisplayName() + ChatColor.RED + "Has survived" + ChatColor.BLUE + days + ChatColor.RED + "!"));
lastUsage.put(player.getName(), System.currentTimeMillis());
}
}
else if(!daysMap.containsKey(player.getName())){
daysMap.put(player.getName(), 0);
}
}
else{
int timeLeft = (int) (cdtime-((System.currentTimeMillis()-lastUsed)/1000));
player.sendMessage(ChatColor.RED + "It hasn't been a day yet " + ChatColor.GREEN + timeLeft + ChatColor.RED + " seconds left");
return true;
}
}
else if(!player.hasPermission("minesurvival.days")){
player.sendMessage(ChatColor.RED + "No permission");
}
}
if(commandLabel.equalsIgnoreCase("hardcore")){
if(!player.hasPermission("minesurvival.normal")){
user.addPermission("minesurvival.hardcore");
player.sendMessage(ChatColor.RED + "You are now playing hardcore");
}
else if(player.hasPermission("minesurvival.normal")){
player.sendMessage(ChatColor.RED + "You cannot switch from normal to hardcore!");
}
}
if(commandLabel.equalsIgnoreCase("normal")){
if(!player.hasPermission("minesurvival.hardcore")){
user.addPermission("minesurvival.normal");
player.sendMessage(ChatColor.RED + "You are now playing normal");
}
else if(player.hasPermission("minesurvival.hardcore")){
player.sendMessage(ChatColor.RED + "You cannot switch from hardcore to normal!");
}
}
if(commandLabel.equalsIgnoreCase("timeleft")){
if(damage.containsKey(player.getName())){
damage.put(player.getName(), System.currentTimeMillis());
}
}
return false;
}
@EventHandler
public void onPlayerDeathEvent(PlayerDeathEvent event){
Player player = (Player) event.getEntity();
PermissionUser user = PermissionsEx.getUser(player);
if(player instanceof Player){
Integer daysdeath = this.daysMap.get(player.getName());
if(player.hasPermission("minesurvival.normal")){
Integer death = (int) Math.round((daysdeath-((daysdeath*20)/100)));
this.daysMap.put(player.getName(), death);
user.removePermission("minesurvival.normal");
player.sendMessage(ChatColor.RED + "Because you were playing normal, your days have been reset to " + ChatColor.GREEN + death);
}
else if(player.hasPermission("minesurvival.hardcore")){
Integer hcdeath = (int) Math.round((daysdeath-((daysdeath*80)/100)));
this.daysMap.put(player.getName(), hcdeath);
user.removePermission("minesurvival.hardcore");
player.sendMessage(ChatColor.RED + "Because you were playing hardcore, your days have been reset to " + ChatColor.GREEN + hcdeath);
}
else{
return;
}
}
}
@EventHandler
public void onPlayerInteract(PlayerInteractEvent event) {
ItemStack is = event.getItem();
Player player = event.getPlayer();
long dmgmillis = System.currentTimeMillis() + (damagetime * 1000);
long DamageUsed = 0;
if (is.getType() == Material.NETHER_STAR) {
player.sendMessage("4");
damage.put(player.getName(), (long) 1);
player.getInventory().remove(Material.NETHER_STAR);
player.sendMessage(ChatColor.GREEN + "You have activated your 10 second powerup!");
DamageUsed = damage.get(player.getName());
if(System.currentTimeMillis()-DamageUsed>=dmgmillis){
player.sendMessage("3");
killable.put(player.getName(), true);
}
}
else{
return;
}
}
@EventHandler
public void onPlayerDamage(EntityDamageByEntityEvent event){
Entity damagedE = event.getEntity();
Entity damagerE = event.getDamager();
if(!(damagedE instanceof Player)) return;
if(!(damagerE instanceof Player)) return;
Player damaged = (Player) event.getEntity();
if(damaged instanceof Player){
damaged.sendMessage("2");
if(killable.get(damaged.getName())){
damaged.sendMessage("1");
event.setCancelled(true);
}
}
}
@EventHandler
public void onPlayerJoin(PlayerJoinEvent event){
Player player = event.getPlayer();
killable.put(player.getName(), false);
}
}
这是我得到的错误：
答案 0 :(得分：1)
问题出在代码的第172行：
at com.minetendo.minesurvival.MineSurvival.onPlayerDamage(MineSurvival.java:172)
在您的代码中似乎是这一行：
if(killable.get(damaged.getName())){
这是因为您的killable HashMap不包含受损播放器的名称。要解决此问题，您应该检查killable.contains(damaged.getName())
所以，你的活动应该是这样的：
@EventHandler
public void onPlayerDamage(EntityDamageByEntityEvent event){
Entity damagedE = event.getEntity();
Entity damagerE = event.getDamager();
if(!(damagedE instanceof Player)) return;
if(!(damagerE instanceof Player)) return;
Player damaged = (Player) event.getEntity();
if(damaged instanceof Player){
damaged.sendMessage("2");
if(killable.contains(damaged.getName())){//check if killable contains the damaged player's name
if(killable.get(damaged.getName())){
damaged.sendMessage("1");
event.setCancelled(true);
}
}
}
}
答案 1 :(得分：0)