Plex-FAWE/src/main/java/com/sk89q/worldedit/bukkit/BukkitPlayerBlockBag.java

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// $Id$
/*
* WorldEdit
* Copyright (C) 2010 sk89q <http://www.sk89q.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.sk89q.worldedit.bukkit;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;
import com.sk89q.worldedit.Vector;
import com.sk89q.worldedit.bags.*;
import com.sk89q.worldedit.blocks.BaseItem;
import com.sk89q.worldedit.blocks.BaseItemStack;
import com.sk89q.worldedit.blocks.BlockID;
import com.sk89q.worldedit.blocks.ItemType;
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public class BukkitPlayerBlockBag extends BlockBag {
/**
* Player instance.
*/
private Player player;
/**
* The player's inventory;
*/
private ItemStack[] items;
/**
* Construct the object.
*
* @param player
*/
public BukkitPlayerBlockBag(Player player) {
this.player = player;
}
/**
* Loads inventory on first use.
*/
private void loadInventory() {
if (items == null) {
items = player.getInventory().getContents();
}
}
/**
* Get the player.
*
* @return
*/
public Player getPlayer() {
return player;
}
/**
* Get a block.
*
* @param id
*/
@Override
public void fetchItem(BaseItem item) throws BlockBagException {
final int id = item.getType();
final int damage = item.getDamage();
int amount = (item instanceof BaseItemStack) ? ((BaseItemStack) item).getAmount() : 1;
assert(amount == 1);
boolean usesDamageValue = ItemType.usesDamageValue(id);
if (id == BlockID.AIR) {
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throw new IllegalArgumentException("Can't fetch air block");
}
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loadInventory();
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boolean found = false;
for (int slot = 0; slot < items.length; ++slot) {
ItemStack bukkitItem = items[slot];
if (bukkitItem == null) {
continue;
}
if (bukkitItem.getTypeId() != id) {
// Type id doesn't fit
continue;
}
if (usesDamageValue && bukkitItem.getDurability() != damage) {
// Damage value doesn't fit.
continue;
}
int currentAmount = bukkitItem.getAmount();
if (currentAmount < 0) {
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// Unlimited
return;
}
if (currentAmount > 1) {
bukkitItem.setAmount(currentAmount - 1);
found = true;
} else {
items[slot] = null;
found = true;
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}
break;
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}
if (!found) {
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throw new OutOfBlocksException();
}
}
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/**
* Store a block.
*
* @param id
*/
@Override
public void storeItem(BaseItem item) throws BlockBagException {
final int id = item.getType();
final int damage = item.getDamage();
int amount = (item instanceof BaseItemStack) ? ((BaseItemStack) item).getAmount() : 1;
assert(amount <= 64);
boolean usesDamageValue = ItemType.usesDamageValue(id);
if (id == BlockID.AIR) {
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throw new IllegalArgumentException("Can't store air block");
}
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loadInventory();
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int freeSlot = -1;
for (int slot = 0; slot < items.length; ++slot) {
ItemStack bukkitItem = items[slot];
if (bukkitItem == null) {
// Delay using up a free slot until we know there are no stacks
// of this item to merge into
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if (freeSlot == -1) {
freeSlot = slot;
}
continue;
}
if (bukkitItem.getTypeId() != id) {
// Type id doesn't fit
continue;
}
if (usesDamageValue && bukkitItem.getDurability() != damage) {
// Damage value doesn't fit.
continue;
}
int currentAmount = bukkitItem.getAmount();
if (currentAmount < 0) {
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// Unlimited
return;
}
if (currentAmount >= 64) {
// Full stack
continue;
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}
int spaceLeft = 64 - currentAmount;
if (spaceLeft >= amount) {
bukkitItem.setAmount(currentAmount + amount);
return;
}
bukkitItem.setAmount(64);
amount -= spaceLeft;
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}
if (freeSlot > -1) {
items[freeSlot] = new ItemStack(id, amount);
return;
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}
throw new OutOfSpaceException(id);
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}
/**
* Flush any changes. This is called at the end.
*/
@Override
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public void flushChanges() {
if (items != null) {
player.getInventory().setContents(items);
items = null;
}
}
/**
* Adds a position to be used a source.
*
* @param pos
*/
@Override
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public void addSourcePosition(Vector pos) {
}
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/**
* Adds a position to be used a source.
*
* @param pos
*/
@Override
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public void addSingleSourcePosition(Vector pos) {
}
}