Leash a block

Heey heey developers,

I'm trying to create a plugin where you can spawn a pole with horses attached to it. I have no idea how to leash a horse to a fence.

Code:

Code:

                              if(player.getItemInHand().getItemMeta().getDisplayName().equalsIgnoreCase(ChatColor.GREEN + "Horse Bungee")) {
                                final Location startLocation = player.getLocation();
                                Block startBlock = startLocation.getBlock();
                                startBlock.setType(Material.FENCE);
                             
                                for(Player players : Bukkit.getOnlinePlayers()) {
                                    players.playEffect(startLocation, Effect.STEP_SOUND, Material.WOOD);
                                }
                             
                                final HashMap<UUID, Integer> taskID = new HashMap<UUID, Integer>();
                                final HashMap<UUID, Integer> y = new HashMap<UUID, Integer>();
                                y.put(player.getUniqueId(), (int) startLocation.getY() + 1);
                             
                                taskID.put(player.getUniqueId(), Bukkit.getServer().getScheduler().scheduleSyncRepeatingTask(core, new BukkitRunnable() {
                                    public void run() {
                                        if(y.get(player.getUniqueId()) < 9 + startLocation.getY()) {
                                            Location loc = new Location(startLocation.getWorld(), startLocation.getX(), y.get(player.getUniqueId()), startLocation.getZ());
                                         
                                            y.put(player.getUniqueId(), y.get(player.getUniqueId()) + 1);
                                         
                                            loc.getBlock().setType(Material.FENCE);
                                            for(Player players : Bukkit.getOnlinePlayers()) {
                                                players.playEffect(loc, Effect.STEP_SOUND, Material.WOOD);
                                            }
                                        } else {
                                            Bukkit.getServer().getScheduler().cancelTask(taskID.get(player.getUniqueId()));
                                         
                                            //TODO Spawn horses attached to a leash on the pole.
                                        }
                                    }
                                }, 15, 15));
                            }

 

• Create an EntityType.LEASH_HITCH on the fencepost

• get your horse and set it's leashholder to the Hitch.

That is it.

 

@Zombie_Striker, thank you for your help but now i'm getting this error.

Console Error (open) Console Error (close)

[17:06:25 WARN]: [ArcictMC] Task #8 for ArcictMC v0.0.9 generated an exception
java.lang.NullPointerException
at org.bukkit.craftbukkit.v1_8_R1.CraftWorld.spawn(CraftWorld.java:1060)
~[craftbukkit_1_8.jar:git-Bukkit-0899683]
at org.bukkit.craftbukkit.v1_8_R1.CraftWorld.spawn(CraftWorld.java:839)
~[craftbukkit_1_8.jar:git-Bukkit-0899683]
at me.CheesyFreezy.Lobby.LobbyListener$10.run(LobbyListener.java:647) ~[
?:?]
at org.bukkit.craftbukkit.v1_8_R1.scheduler.CraftTask.run(CraftTask.java
:53) ~[craftbukkit_1_8.jar:git-Bukkit-0899683]
at org.bukkit.craftbukkit.v1_8_R1.scheduler.CraftScheduler.mainThreadHea
rtbeat(CraftScheduler.java:349) [craftbukkit_1_8.jar:git-Bukkit-0899683]
at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:6
53) [craftbukkit_1_8.jar:git-Bukkit-0899683]
at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:2
84) [craftbukkit_1_8.jar:git-Bukkit-0899683]
at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:5
98) [craftbukkit_1_8.jar:git-Bukkit-0899683]
at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java
:506) [craftbukkit_1_8.jar:git-Bukkit-0899683]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_31]

Current (part of) code:

Code:

final Location startLocation = player.getLocation();
                                Block startBlock = startLocation.getBlock();
                                startBlock.setType(Material.FENCE);
                              
                                for(Player players : Bukkit.getOnlinePlayers()) {
                                    players.playEffect(startLocation, Effect.STEP_SOUND, Material.WOOD);
                                }
                              
                                final HashMap<UUID, Integer> taskID = new HashMap<UUID, Integer>();
                                final HashMap<UUID, Integer> y = new HashMap<UUID, Integer>();
                                y.put(player.getUniqueId(), (int) startLocation.getY() + 1);
                              
                                taskID.put(player.getUniqueId(), Bukkit.getServer().getScheduler().scheduleSyncRepeatingTask(core, new BukkitRunnable() {
                                    public void run() {
                                        if(y.get(player.getUniqueId()) < 9 + startLocation.getY()) {
                                            Location loc = new Location(startLocation.getWorld(), startLocation.getX(), y.get(player.getUniqueId()), startLocation.getZ());
                                          
                                            y.put(player.getUniqueId(), y.get(player.getUniqueId()) + 1);
                                          
                                            loc.getBlock().setType(Material.FENCE);
                                            for(Player players : Bukkit.getOnlinePlayers()) {
                                                players.playEffect(loc, Effect.STEP_SOUND, Material.WOOD);
                                            }
                                        } else {
                                            Horse h1 = (Horse) startLocation.getWorld().spawnEntity(new Location(startLocation.getWorld(), startLocation.getX(), startLocation.getY() + 8, startLocation.getZ()), EntityType.HORSE);
                                            LeashHitch hitch = (LeashHitch) startLocation.getWorld().spawn(new Location(startLocation.getWorld(), startLocation.getX(), startLocation.getY() + 8, startLocation.getZ()), LeashHitch.class);
                                      
                                            h1.setLeashHolder(hitch);
                                          
                                            Bukkit.getServer().getScheduler().cancelTask(taskID.get(player.getUniqueId()));
                                        }
                                    }
                                }, 15, 15));

In the console it's saying there is an error at line 647. In this code line 647 is line 26

 

First, don't use the .spawn(), instead use .spawnCreature();

Secondly, the error says that there is a nullpointer on that line. Debug to see which variable is null.

 

@Zombie_Striker

Hé! I debugged it!

Source Code:
http://gyazo.com/3da28119e4c04443f19d5bc610494856

Message in-game:
http://gyazo.com/aab748f8b3c9d981f59f5cfb9b99e459

I added 8 to the Y coord, but the plugin adds 0.08 instead of 8. Maybe this is the problem?

 

Bump, still not fixed..... Please @Zombie_Striker, you can help me D:

 

Change getY() to getBlockY();. getY returns a double while getBlockY returns an int.

 

@Zombie_Striker

Getting a new error:
http://gyazo.com/136165b8fa6a8cd89025ad67bf25bd81

Piece of code:
http://gyazo.com/02b2ba9ffad6328eb122f2f558af7ef9



Debug:
Source Code:
http://gyazo.com/3da28119e4c04443f19d5bc610494856

Message in-game:
http://gyazo.com/aab748f8b3c9d981f59f5cfb9b99e459

 

It seems that you are casting EntityType to a LivingEntity(The Leash). Does your Map accept LivingEntitys instead on an EntityType?