Java Code Examples for cn.nukkit.item.Item#clone()

@Override
public boolean canAddItem(Item item) {
    item = item.clone();
    boolean checkDamage = item.hasMeta();
    boolean checkTag = item.getCompoundTag() != null;
    for (int i = 0; i < this.getSize(); ++i) {
        Item slot = this.getItem(i);
        if (item.equals(slot, checkDamage, checkTag)) {
            int diff;
            if ((diff = slot.getMaxStackSize() - slot.getCount()) > 0) {
                item.setCount(item.getCount() - diff);
            }
        } else if (slot.getId() == Item.AIR) {
            item.setCount(item.getCount() - this.getMaxStackSize());
        }

        if (item.getCount() <= 0) {
            return true;
        }
    }

    return false;
}
 

private Item[][] cloneItemMap(Item[][] map) {
    Item[][] newMap = new Item[map.length][];
    for (int i = 0; i < newMap.length; i++) {
        Item[] old = map[i];
        Item[] n = new Item[old.length];

        System.arraycopy(old, 0, n, 0, n.length);
        newMap[i] = n;
    }

    for (int y = 0; y < newMap.length; y++) {
        Item[] row = newMap[y];
        for (int x = 0; x < row.length; x++) {
            Item item = newMap[y][x];
            newMap[y][x] = item.clone();
        }
    }
    return newMap;
}
 

@Override
public boolean onActivate(Item item, Player player) {
    BlockEntity blockEntity = this.getLevel().getBlockEntity(this);
    BlockEntityItemFrame itemFrame = (BlockEntityItemFrame) blockEntity;
    if (itemFrame.getItem().getId() == Item.AIR) {
        // We can't use Item.get(item.getId(), item.getDamage(), 1) because
        // we need to keep the item's NBT tags
        Item itemOnFrame = item.clone(); // So we clone the item
        itemOnFrame.setCount(1); // Change it to only one item (if we keep +1, visual glitches will happen)
        itemFrame.setItem(itemOnFrame); // And then we set it on the item frame
        // The item will be removed from the player's hand a few lines ahead
        this.getLevel().addSound(new ItemFrameItemAddedSound(this));
        if (player != null && player.isSurvival()) {
            int count = item.getCount();
            if (count-- <= 0) {
                player.getInventory().setItemInHand(new ItemBlock(new BlockAir(), 0, 0));
                return true;
            }
            item.setCount(count);
            player.getInventory().setItemInHand(item);
        }
    } else {
        int itemRot = itemFrame.getItemRotation();
        if (itemRot >= 7) {
            itemRot = 0;
        } else {
            itemRot++;
        }
        itemFrame.setItemRotation(itemRot);
        this.getLevel().addSound(new ItemFrameItemRotated(this));
    }
    return true;
}
 

public void setPrimaryOutput(Item item) {
    if (primaryOutput == null) {
        primaryOutput = item.clone();
    } else if (!primaryOutput.equals(item)) {
        throw new RuntimeException("Primary result item has already been set and does not match the current item (expected " + primaryOutput + ", got " + item + ")");
    }
}
 

/**
 * Constructs a ShapedRecipe instance.
 *
 * @param primaryResult
 * @param shape<br>        Array of 1, 2, or 3 strings representing the rows of the recipe.
 *                         This accepts an array of 1, 2 or 3 strings. Each string should be of the same length and must be at most 3
 *                         characters long. Each character represents a unique type of ingredient. Spaces are interpreted as air.
 * @param ingredients<br>  Char => Item map of items to be set into the shape.
 *                         This accepts an array of Items, indexed by character. Every unique character (except space) in the shape
 *                         array MUST have a corresponding item in this list. Space character is automatically treated as air.
 * @param extraResults<br> List of additional result items to leave in the crafting grid afterwards. Used for things like cake recipe
 *                         empty buckets.
 *                         <p>
 *                         Note: Recipes **do not** need to be square. Do NOT add padding for empty rows/columns.
 */
public ShapedRecipe(Item primaryResult, String[] shape, Map<Character, Item> ingredients, List<Item> extraResults) {
    int rowCount = shape.length;
    if (rowCount > 3 || rowCount <= 0) {
        throw new RuntimeException("Shaped recipes may only have 1, 2 or 3 rows, not " + rowCount);
    }

    int columnCount = shape[0].length();
    if (columnCount > 3 || rowCount <= 0) {
        throw new RuntimeException("Shaped recipes may only have 1, 2 or 3 columns, not " + columnCount);
    }


    //for($shape as $y => $row) {
    for (int y = 0; y < rowCount; y++) {
        String row = shape[y];

        if (row.length() != columnCount) {
            throw new RuntimeException("Shaped recipe rows must all have the same length (expected " + columnCount + ", got " + row.length() + ")");
        }

        for (int x = 0; x < columnCount; ++x) {
            char c = row.charAt(x);

            if (c != ' ' && !ingredients.containsKey(c)) {
                throw new RuntimeException("No item specified for symbol '" + c + "'");
            }
        }
    }

    this.primaryResult = primaryResult.clone();
    this.extraResults.addAll(extraResults);

    this.shape = shape;

    for (Map.Entry<Character, Item> entry : ingredients.entrySet()) {
        this.setIngredient(entry.getKey(), entry.getValue());
    }
}
 

@Override
public boolean onActivate(Item item, Player player) {
    BlockEntity blockEntity = this.getLevel().getBlockEntity(this);
    BlockEntityItemFrame itemFrame = (BlockEntityItemFrame) blockEntity;
    if (itemFrame.getItem().getId() == Item.AIR) {
        // We can't use Item.get(item.getId(), item.getDamage(), 1) because
        // we need to keep the item's NBT tags
        Item itemOnFrame = item.clone(); // So we clone the item
        itemOnFrame.setCount(1); // Change it to only one item (if we keep +1, visual glitches will happen)
        itemFrame.setItem(itemOnFrame); // And then we set it on the item frame
        // The item will be removed from the player's hand a few lines ahead
        this.getLevel().addSound(this, Sound.BLOCK_ITEMFRAME_ADD_ITEM);
        if (player != null && player.isSurvival()) {
            int count = item.getCount();
            if (count-- <= 0) {
                player.getInventory().setItemInHand(new ItemBlock(new BlockAir(), 0, 0));
                return true;
            }
            item.setCount(count);
            player.getInventory().setItemInHand(item);
        }
    } else {
        int itemRot = itemFrame.getItemRotation();
        if (itemRot >= 7) {
            itemRot = 0;
        } else {
            itemRot++;
        }
        itemFrame.setItemRotation(itemRot);
        this.getLevel().addSound(this, Sound.BLOCK_ITEMFRAME_ROTATE_ITEM);
    }
    return true;
}
 

@Override
public boolean setItem(int index, Item item, boolean send) {
    item = item.clone();
    if (index < 0 || index >= this.size) {
        return false;
    } else if (item.getId() == 0 || item.getCount() <= 0) {
        return this.clear(index, send);
    }

    InventoryHolder holder = this.getHolder();
    if (holder instanceof Entity) {
        EntityInventoryChangeEvent ev = new EntityInventoryChangeEvent((Entity) holder, this, this.getItem(index), item, index);
        Server.getInstance().getPluginManager().callEvent(ev);
        if (ev.isCancelled()) {
            this.sendSlot(index, this.getViewers());
            return false;
        }

        item = ev.getNewItem();
    }

    Item old = this.getItem(index);
    this.slots.put(index, item.clone());
    this.onSlotChange(index, old, send);

    return true;
}
 

public void setExtraOutput(int index, Item item) {
    int y = (index / this.gridSize);
    int x = index % gridSize;

    if (secondaryOutputs[y][x].isNull()) {
        secondaryOutputs[y][x] = item.clone();
    } else if (!secondaryOutputs[y][x].equals(item)) {
        throw new RuntimeException("Output " + index + " has already been set and does not match the current item (expected " + secondaryOutputs[y][x] + ", got " + item + ")");
    }
}
 

public FurnaceSmeltEvent(BlockEntityFurnace furnace, Item source, Item result) {
    super(furnace.getBlock());
    this.source = source.clone();
    this.source.setCount(1);
    this.result = result;
    this.furnace = furnace;
}
 

@Override
public boolean setItem(int index, Item item, boolean send) {
    item = item.clone();
    if (index < 0 || index >= this.size) {
        return false;
    } else if (item.getId() == 0 || item.getCount() <= 0) {
        return this.clear(index);
    }

    InventoryHolder holder = this.getHolder();
    if (holder instanceof Entity) {
        EntityInventoryChangeEvent ev = new EntityInventoryChangeEvent((Entity) holder, this.getItem(index), item, index);
        Server.getInstance().getPluginManager().callEvent(ev);
        if (ev.isCancelled()) {
            this.sendSlot(index, this.getViewers());
            return false;
        }

        item = ev.getNewItem();
    }

    Item old = this.getItem(index);
    this.slots.put(index, item.clone());
    this.onSlotChange(index, old, send);

    return true;
}
 

public Item getIngredient(int x, int y) {
    Item item = this.ingredients.get(this.shape[y].charAt(x));

    return item != null ? item.clone() : Item.get(Item.AIR);
}
 

public PlayerGlassBottleFillEvent(Player player, Block target, Item item) {
    this.player = player;
    this.target = target;
    this.item = item.clone();
}
 

public void setInput(Item item) {
    this.ingredient = item.clone();
}
 

public void setInput(Item item) {
    this.ingredient = item.clone();
}
 

public PlayerGlassBottleFillEvent(Player player, Block target, Item item) {
    this.player = player;
    this.target = target;
    this.item = item.clone();
}
 

public ShapelessRecipe(Item result) {
    this.output = result.clone();
}
 

public void setInput(Item item) {
    ingredient = item.clone();
}
 

public Item getIngredient(int x, int y) {
    Item item = this.ingredients.get(this.shape[y].charAt(x));

    return item != null ? item.clone() : Item.get(Item.AIR);
}
 

public FurnaceRecipe(Item result, Item ingredient) {
    this.output = result.clone();
    this.ingredient = ingredient.clone();
}
 

public void setPrimaryOutput(Item item) {
	if (this.primaryOutput == null) {
		this.primaryOutput = item.clone();
	}
}