Custom chest Inventory

Hello everyone,

I'm making a plugin in which I need to add a custom inventory. So I made a class implementing Inventory, but when I use player.openInventory(myInventory) it throws ClassCastException saying myInventory can't be casted to org.bukkit.craftbukkit.v1_7_R1.inventory.CraftInventory. So I tried making my class extend CraftInventory but got overconfused with constructors, so I realized I'm doing it wrong.
Any idea how to make it work? I mean, how to create an inventory class that I can use as an Inventory?

Thank you,
OLEGSHA

P.S. Here's the beginning of my class (imports, class, constructor):

Code:

package ru.iwcs.smallChests.chest;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.ListIterator;

import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.entity.HumanEntity;
import org.bukkit.event.inventory.InventoryType;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.InventoryHolder;
import org.bukkit.inventory.ItemStack;

public class InventorySmallChest implements Inventory {
   
    public static final ItemStack EMPTY_SLOT = new ItemStack(Material.AIR);
    public static final String DEF_NAME = "Small Chest";
    public static final int SIZE = 18;
   
    private final BlockSmallChest owner;
    private ItemStack[] inv;
    private String name = DEF_NAME;
   
    public InventorySmallChest(BlockSmallChest blockSmallChest) {
        this.owner = blockSmallChest;
        {
            this.inv = new ItemStack[] {
                EMPTY_SLOT, EMPTY_SLOT,
                EMPTY_SLOT, EMPTY_SLOT,
                EMPTY_SLOT, EMPTY_SLOT,
                EMPTY_SLOT, EMPTY_SLOT,
                EMPTY_SLOT, EMPTY_SLOT,
                EMPTY_SLOT, EMPTY_SLOT,
                EMPTY_SLOT, EMPTY_SLOT,
                EMPTY_SLOT, EMPTY_SLOT,
                EMPTY_SLOT, EMPTY_SLOT
            };
        }
    }

And here's the exception I catch:

Code:

[04:25:36 ERROR]: Could not pass event PlayerInteractEvent to SmallChests  0.1 org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:320) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:486) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:471) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at org.bukkit.craftbukkit.v1_7_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:195) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at net.minecraft.server.v1_7_R1.PlayerInteractManager.interact(PlayerInteractManager.java:374) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at net.minecraft.server.v1_7_R1.PlayerConnection.a(PlayerConnection.java:628) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at net.minecraft.server.v1_7_R1.PacketPlayInBlockPlace.a(SourceFile:60) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at net.minecraft.server.v1_7_R1.PacketPlayInBlockPlace.handle(SourceFile:9) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at net.minecraft.server.v1_7_R1.NetworkManager.a(NetworkManager.java:146) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at net.minecraft.server.v1_7_R1.ServerConnection.c(SourceFile:134) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:655) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:250) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
Caused by: java.lang.ClassCastException: ru.iwcs.smallChests.chest.InventorySmallChest cannot be cast to org.bukkit.craftbukkit.v1_7_R1.inventory.CraftInventory

        at org.bukkit.craftbukkit.v1_7_R1.entity.CraftHumanEntity.openInventory(CraftHumanEntity.java:188) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        at ru.iwcs.smallChests.EventListener.onClick(EventListener.java:45) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_25]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_25]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_25]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:318) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
        ... 15 more

And, finally, the entire class on pastebin

 

@OLEGSHA ... If you're trying to make a custom inventory, there are many more ways which are much simpler than implementing Inventory or using CraftInventory.

Code:

Bukkit.createInventory(InventoryHolder owner, int size, String title)

 

But how can I actually link it to non-default InventoryHolder? I mean, to a skull, for example? Because when I register an inventory it asks for an InventoryHolder that is only implemented by Chest-alike stuff that has inventory in vanilla MC, and I just don't see how to make some other block behave like a chest. And still I will need my own Inventory class as I need to make some methods reguarding the object itself. So how can create an Inventory class here?

Thank you anyway, it's just that I need a bit more.

 

@OLEGSHA
Maybe check for player interact event, and open it to the player there? I dunno, just a suggestion.

 

That's where I got that error the first time =\

 

@OLEGSHA
Erm... Create a new inventory, not making a class implement inventory, but doing the post that djskepter used above, and making the player open the inventory you created.

 

Again: I can't assign it to a non-chest block + I need my own methods to work with the inventory. How do I assign it to dirt, for example?

 

@OLEGSHA
Again, on interact, open the inv to the PLAYER. Remember, it's PlayerInteractEvent, and check for right click, then open chest to the player, using player.openinventory(inventory). No need for a custom inventory class. Just make one with bukkit.createinventory.

 

Look. Here's what I have right now.
EventHandler:

Code:

@EventHandler public void onClick(PlayerInteractEvent event) {
        try {
            if (event.getAction().equals(Action.RIGHT_CLICK_BLOCK))
                if (event.getClickedBlock().getType().equals(Material.SKULL))
                    smallChests.c.info(event.getClickedBlock().getType().toString());
                    if (((Skull) event.getClickedBlock().getState()).hasOwner())
                        if (((Skull) event.getClickedBlock().getState()).getOwner().equals(SmallChests.CHEST_OWNER))
                            if (smallChests.hasPerm(event.getPlayer(), SmallChests.MAIN_PERM_NODE + ".open", true)) {
                                try {
                                    event.getPlayer().openInventory(smallChests.getByLoc(event.getClickedBlock().getLocation()).getInventory());
                                } catch (Exception e) {
                                    SmallChest chest = new BlockSmallChest((Skull) event.getClickedBlock().getState());
                                    smallChests.registerChest(chest, event.getClickedBlock());
                                    event.getPlayer().openInventory((Inventory) chest.getInventory());
                                }
                            }
        } catch (PluginNotInitException e) {e.printStackTrace();}
    }

And SmallChests.registerChest method:

Code:

public void registerChest(SmallChest chest, Block holder) {
        if (chest != null) {
            chestList.add(chest);
            Bukkit.createInventory((InventoryHolder) holder, InventoryType.CHEST); //Throws here
        }
    }

It says org.block.Skull can't be cast to InventoryHolder as it's not extending it. However I know some plugin that does it with bookshelves, so it's possible somehow.

 

This is what I do to make a custom inventory

Inventory chest = Bukkit.createInventory(null, 27, "Kit Selector");

You would keep it (null, the number of spaces which is a multiple of 9, the name)

Whole code would be like this

Code:

Inventory chest = Bukkit.createInventory(null, 9, "SmallChest");       
chest.setItem(4, new Itemstack(Material.DIRT)

If you want to add a name and a custom lore to the item then use this

Code:

ItemStack smallchest = new ItemStack(Material.SUGAR);
        ItemMeta smallim = smallchest.getItemMeta();
        smallchest.setDisplayName(ChatColor.AQUA + "" + ChatColor.BOLD + "SMALL CHEST");
        ArrayList<String> smalllore = new ArrayList<String>();
        smalllore.add(ChatColor.YELLOW + ("Small chest inventory")
        smallim.setLore(smalllore);
        smallchest.setItemMeta(smallim);