cn.nukkit.inventory.CommandBlockInventory Maven / Gradle / Ivy

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package cn.nukkit.inventory;

import cn.nukkit.Player;
import cn.nukkit.blockentity.BlockEntityCommandBlock;
import cn.nukkit.entity.Entity;
import cn.nukkit.event.inventory.InventoryOpenEvent;
import cn.nukkit.item.Item;
import cn.nukkit.level.Position;
import cn.nukkit.math.Vector3;
import cn.nukkit.network.protocol.ContainerOpenPacket;

import java.util.*;

//implement the command block's ui
public class CommandBlockInventory implements Inventory {

    protected final Position holder;
    protected final Set viewers;
    private List listeners;

    public CommandBlockInventory(Position holder, Set viewers) {
        this.holder = holder;
        this.viewers = viewers;
    }

    @Override
    public int getSize() {
        return 0;
    }

    @Override
    public int getMaxStackSize() {
        return 0;
    }

    @Override
    public void setMaxStackSize(int size) {

    }

    @Override
    public String getName() {
        if (this.holder instanceof BlockEntityCommandBlock) {
            return ((BlockEntityCommandBlock) this.holder).getName();
        }
        return "";
    }

    @Override
    public String getTitle() {
        return this.getName();
    }

    @Override
    public Item getItem(int index) {
        return Item.get(Item.AIR);
    }

    @Override
    public boolean setItem(int index, Item item, boolean send) {
        return false;
    }

    @Override
    public Item[] addItem(Item... slots) {
        return new Item[0];
    }

    @Override
    public boolean canAddItem(Item item) {
        return false;
    }

    @Override
    public Item[] removeItem(Item... slots) {
        return new Item[0];
    }

    @Override
    public Map getContents() {
        return Collections.emptyMap();
    }

    @Override
    public void setContents(Map items) {

    }

    @Override
    public void sendContents(Player player) {

    }

    @Override
    public void sendContents(Player... players) {

    }

    @Override
    public void sendContents(Collection players) {

    }

    @Override
    public void sendSlot(int index, Player player) {

    }

    @Override
    public void sendSlot(int index, Player... players) {

    }

    @Override
    public void sendSlot(int index, Collection players) {

    }

    @Override
    public boolean contains(Item item) {
        return false;
    }

    @Override
    public Map all(Item item) {
        return Collections.emptyMap();
    }

    @Override
    public int first(Item item, boolean exact) {
        return 0;
    }

    @Override
    public int firstEmpty(Item item) {
        return 0;
    }

    @Override
    public void decreaseCount(int slot) {

    }

    @Override
    public void remove(Item item) {

    }

    @Override
    public boolean clear(int index, boolean send) {
        return false;
    }

    @Override
    public void clearAll() {

    }

    @Override
    public boolean isFull() {
        return true;
    }

    @Override
    public boolean isEmpty() {
        return true;
    }

    @Override
    public Set getViewers() {
        return Collections.emptySet();
    }

    @Override
    public InventoryType getType() {
        return null;
    }

    @Override
    public InventoryHolder getHolder() {
        return (InventoryHolder) this.holder;
    }

    @Override
    public void onOpen(Player who) {
        if (who.isOp() && who.isCreative()) {
            ContainerOpenPacket pk = new ContainerOpenPacket();
            pk.windowId = who.getWindowId(this);
            pk.type = 16;
            InventoryHolder holder = this.getHolder();
            if (holder instanceof Vector3) {
                pk.x = ((Vector3) holder).getFloorX();
                pk.y = ((Vector3) holder).getFloorY();
                pk.z = ((Vector3) holder).getFloorZ();
            } else {
                pk.x = pk.y = pk.z = 0;
            }
            if (holder instanceof Entity) {
                pk.entityId = ((Entity) holder).getId();
            }

            who.dataPacket(pk);
        }
    }

    @Override
    public boolean open(Player who) {
        InventoryOpenEvent ev = new InventoryOpenEvent(this, who);
        who.getServer().getPluginManager().callEvent(ev);
        if (ev.isCancelled()) {
            return false;
        }
        this.onOpen(who);

        return true;
    }

    @Override
    public void close(Player who) {
        this.onClose(who);
    }

    @Override
    public void onClose(Player who) {
        this.viewers.remove(who);
    }

    @Override
    public void onSlotChange(int index, Item before, boolean send) {
        if (this.listeners != null) {
            for (InventoryListener listener : listeners) {
                listener.onInventoryChanged(this, before, index);
            }
        }
    }

    @Deprecated
    @Override
    public void addListener(InventoryListener listener) {
        if (this.listeners == null) {
            this.listeners = new ArrayList<>();
        }

        this.listeners.add(listener);
    }

    @Deprecated
    @Override
    public void removeListener(InventoryListener listener) {
        if (this.listeners != null) {
            this.listeners.remove(listener);
        }
    }
}