Solved Placing player skull help

Discussion in 'Plugin Development' started by ItsMas_, Jan 22, 2016.

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  1. Offline

    ItsMas_

    I am making a plugin in which a menu with all staff online appears, but the skulls only appear as Steve/Alex heads, even though I have used .setOwner(name);

    I was told this is because the client/Bukkit needs to load the head for the player, by placing it for example.

    Is there any other way I can pre-load the heads of all players with a certain permission when the server starts, so the player's actual head appears in the GUI?

    EDIT: I have decided to get around it by placing the head
    onlineStaff is the inventory in which the skulls appear
    Here is my code:
    Code:
    package me.mas.staffmenu;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.block.BlockState;
import org.bukkit.block.Skull;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.InventoryClickEvent;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.SkullMeta;

public class OnlineStaff implements Listener, CommandExecutor {

    ItemStack finalSkull;
    Location loc;
    Block b;
    BlockState state;
  
    public static Inventory onlineStaff = Bukkit.createInventory(null, 27, ChatColor.DARK_GREEN + "Online Staff:");
  
    private ItemStack addSkull(ItemStack item, String owner){
        SkullMeta meta = (SkullMeta) item.getItemMeta();
        meta.setOwner(owner);
        meta.setDisplayName(ChatColor.YELLOW + owner);
        item.setItemMeta(meta);
      
        return item;
    }
  
    @EventHandler
    public void onInventoryClick(InventoryClickEvent e){
        Inventory inventory = e.getInventory();
        if (inventory.getName().equals(onlineStaff.getName())){
                e.setCancelled(true);
        }
    }
  
    @SuppressWarnings("deprecation")
    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
        if (cmd.getName().equalsIgnoreCase("staff")){
            if (sender.hasPermission("mas.staffmenu.showstaff")){
                onlineStaff.clear();
                Player player = (Player) sender;
                player.openInventory(onlineStaff);
              
                for (Player pl : Bukkit.getServer().getOnlinePlayers()){
                    if (pl.hasPermission("mas.staffmenu.isstaff") || pl.getUniqueId().toString().equals("fa75e09f-68f9-4407-8753-ea06bc4fb1e8")){
                        if (!StaffMenu.vanished.contains(pl)){
                            loc.setX(299984);
                            loc.setY(255);
                            loc.setZ(299984);
                          
                            Block b = loc.getBlock();
                            b.setType(Material.SKULL);
                            b.setData((byte) 3);
                          
                            state = b.getState();
                          
                            Skull skull = (Skull) state;                              
                            skull.setOwner(pl.getName());
                            skull.update();
                          
                            onlineStaff.addItem(addSkull(new ItemStack(Material.SKULL_ITEM, 1, (byte) 3), pl.getName()));
                        }else{
                            return true;
                        }
                    }
                }
            }else{
                sender.sendMessage("§e[§c!§e] §cYou may not view the online staff");
            }
        }  
        return true;
    }
}
    Here is the error:
    Code:
    [17:29:30 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'staff' in plugin StaffMenu v1.2.0
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:140) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:620) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1106) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:966) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(SourceFile:37) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(SourceFile:9) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [craftbukkit.jar:git-Bukkit-18fbb24]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.7.0_79]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_79]
        at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:673) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:335) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:629) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:537) [craftbukkit.jar:git-Bukkit-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.7.0_79]
Caused by: java.lang.NullPointerException
        at me.mas.staffmenu.OnlineStaff.onCommand(OnlineStaff.java:59) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        ... 15 more
>
     
    Last edited: Jan 24, 2016
    ItsMas_, Jan 22, 2016
    #1
  2. Offline

    HenrySartori

    Get Player's UUID then add it to the Skull
     
    HenrySartori, Jan 23, 2016
    #2
  3. Offline

    teej107

    The only fix for this bug I've heard is to place the head. :p
     
    teej107, Jan 23, 2016
    #3
  4. Offline

    ItsMas_

    Okay. Do I need to place it somewhere the player has rendered, or just anywhere in the world?
     
    ItsMas_, Jan 24, 2016
    #4
  5. Offline

    teej107

    I'm not sure
     
    teej107, Jan 24, 2016
    #5
  6. Offline

    ItsMas_

    Updated main post with current code and error message ^_^
     
    Last edited: Jan 24, 2016
    ItsMas_, Jan 24, 2016
    #6
  7. Offline

    HenrySartori

    You didn't put an Else if the player doesnt have the permission =)
    NullPointerException is when you didn't said the plugin "what to do" without the permission and it returned null and brokes.
     
    HenrySartori, Jan 24, 2016
    #7
  8. Offline

    ItsMas_

    I have an else statement for the permission, but I somehow didn't paste the whole code in, so it cut that bit off :)

    Updated code with whole class
     
    ItsMas_, Jan 24, 2016
    #8
  9. Offline

    HenrySartori

    At my view you disn't put an Else for p.hasCommand("mas.staffmenu.isstaff"); :p
     
    HenrySartori, Jan 24, 2016
    #9
  10. Offline

    ItsMas_

    Oh, I thought you meant the permission for using the command.

    Error still appears:
    Code:
    [17:43:02 INFO]: ItsMas_ issued server command: /staff
[17:43:02 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'staff' in plugin StaffMenu v1.2.0
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:140) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:620) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1106) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:966) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(SourceFile:37) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(SourceFile:9) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [craftbukkit.jar:git-Bukkit-18fbb24]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.7.0_79]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_79]
        at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:673) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:335) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:629) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:537) [craftbukkit.jar:git-Bukkit-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.7.0_79]
Caused by: java.lang.NullPointerException
        at me.mas.staffmenu.OnlineStaff.onCommand(OnlineStaff.java:59) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        ... 15 more
     
    ItsMas_, Jan 24, 2016
    #10
  11. Offline

    HenrySartori

    After every else put return false; and post your fixed code.

    EDIT: I found it. You forget the "else" on:
    Code:
        @EventHandler
    public void onInventoryClick(InventoryClickEvent e){
        Inventory inventory = e.getInventory();
        if (inventory.getName().equals(onlineStaff.getName())){
                e.setCancelled(true);
        }
    }
     
    Last edited: Jan 24, 2016
    HenrySartori, Jan 24, 2016
    #11
  12. Offline

    ItsMas_

    Code:
    package me.mas.staffmenu;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.block.BlockState;
import org.bukkit.block.Skull;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.InventoryClickEvent;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.SkullMeta;

public class OnlineStaff implements Listener, CommandExecutor {

    ItemStack finalSkull;
    Location loc;
    Block b;
    BlockState state;
  
    public static Inventory onlineStaff = Bukkit.createInventory(null, 27, ChatColor.DARK_GREEN + "Online Staff:");
  
    @SuppressWarnings("deprecation")
    public void onEnable(){
        loc.setX(299984);
        loc.setY(255);
        loc.setZ(299984);
      
        Block b = loc.getBlock();
        b.setType(Material.SKULL);
        b.setData((byte) 3);
    }
  
    private ItemStack addSkull(ItemStack item, String owner){
        SkullMeta meta = (SkullMeta) item.getItemMeta();
        meta.setOwner(owner);
        meta.setDisplayName(ChatColor.YELLOW + owner);
        item.setItemMeta(meta);
      
        return item;
    }
  
    @EventHandler
    public void onInventoryClick(InventoryClickEvent e){
        Inventory inventory = e.getInventory();
        if (inventory.getName().equals(onlineStaff.getName())){
                e.setCancelled(true);
        }else{
            return;
        }
    }
  
    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
        if (cmd.getName().equalsIgnoreCase("staff")){
            if (sender.hasPermission("mas.staffmenu.showstaff")){
                onlineStaff.clear();
                Player player = (Player) sender;
                player.openInventory(onlineStaff);
              
                for (Player pl : Bukkit.getServer().getOnlinePlayers()){
                    if (pl.hasPermission("mas.staffmenu.isstaff") || pl.getUniqueId().toString().equals("fa75e09f-68f9-4407-8753-ea06bc4fb1e8")){
                        if (!StaffMenu.vanished.contains(pl)){
                            onlineStaff.addItem(addSkull(new ItemStack(Material.SKULL_ITEM, 1, (byte) 3), pl.getName()));
                          
                            state = b.getState();
                  
                            Skull skull = (Skull) state;                              
                            skull.setOwner(pl.getName());
                            skull.update();
                        }else{
                            return false;
                        }
                    }else{
                        return false;
                    }
                }
            }else{
                sender.sendMessage("§e[§c!§e] §cYou may not view the online staff");
            }
        }  
        return true;
    }
}
    Code:
    [18:14:03 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'staff' in plugin StaffMenu v1.2
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:140) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:620) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1106) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:966) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(SourceFile:37) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(SourceFile:9) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [craftbukkit.jar:git-Bukkit-18fbb24]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.7.0_79]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_79]
        at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:673) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:335) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:629) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:537) [craftbukkit.jar:git-Bukkit-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.7.0_79]
Caused by: java.lang.NullPointerException
        at me.mas.staffmenu.OnlineStaff.onCommand(OnlineStaff.java:73) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        ... 15 more
[18:17:47 INFO]: ItsMas_ issued server command: /staff
[18:17:47 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'staff' in plugin StaffMenu v1.2
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:140) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:620) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1106) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:966) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(SourceFile:37) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(SourceFile:9) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [craftbukkit.jar:git-Bukkit-18fbb24]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.7.0_79]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_79]
        at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:673) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:335) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:629) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:537) [craftbukkit.jar:git-Bukkit-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.7.0_79]
Caused by: java.lang.NullPointerException
        at me.mas.staffmenu.OnlineStaff.onCommand(OnlineStaff.java:73) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        ... 15 more
>
     
    ItsMas_, Jan 24, 2016
    #12
  13. Offline

    87pen

    87pen, Jan 24, 2016
    #13
    ItsMas_ likes this.
  14. Offline

    ItsMas_

    ItsMas_, Jan 24, 2016
    #14
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