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https://github.com/pmmp/PocketMine-MP.git
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111 lines
3.2 KiB
PHP
111 lines
3.2 KiB
PHP
<?php
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/*
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*
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* ____ _ _ __ __ _ __ __ ____
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* | _ \ ___ ___| | _____| |_| \/ (_)_ __ ___ | \/ | _ \
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* | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
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* | __/ (_) | (__| < __/ |_| | | | | | | | __/_____| | | | __/
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* |_| \___/ \___|_|\_\___|\__|_| |_|_|_| |_|\___| |_| |_|_|
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* @author PocketMine Team
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* @link http://www.pocketmine.net/
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*
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*
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*/
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declare(strict_types=1);
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namespace pocketmine\inventory\transaction;
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use pocketmine\inventory\BaseInventory;
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use pocketmine\inventory\Inventory;
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use pocketmine\inventory\transaction\action\SlotChangeAction;
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use pocketmine\item\Item;
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use pocketmine\item\VanillaItems;
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/**
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* This class facilitates generating SlotChangeActions to build an inventory transaction.
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* It wraps around the inventory you want to modify under transaction, and generates a diff of changes.
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* This allows you to use the normal Inventory API methods like addItem() and so on to build a transaction, without
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* modifying the original inventory.
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*/
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final class TransactionBuilderInventory extends BaseInventory{
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/**
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* @var \SplFixedArray|(Item|null)[]
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* @phpstan-var \SplFixedArray<Item|null>
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*/
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private \SplFixedArray $changedSlots;
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public function __construct(
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private Inventory $actualInventory
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){
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parent::__construct();
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$this->changedSlots = new \SplFixedArray($this->actualInventory->getSize());
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}
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public function getActualInventory() : Inventory{
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return $this->actualInventory;
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}
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protected function internalSetContents(array $items) : void{
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for($i = 0, $size = $this->getSize(); $i < $size; ++$i){
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if(!isset($items[$i])){
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$this->clear($i);
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}else{
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$this->setItem($i, $items[$i]);
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}
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}
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}
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protected function internalSetItem(int $index, Item $item) : void{
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if(!$item->equalsExact($this->actualInventory->getItem($index))){
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$this->changedSlots[$index] = $item->isNull() ? VanillaItems::AIR() : clone $item;
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}
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}
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public function getSize() : int{
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return $this->actualInventory->getSize();
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}
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public function getItem(int $index) : Item{
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return $this->changedSlots[$index] !== null ? clone $this->changedSlots[$index] : $this->actualInventory->getItem($index);
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}
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public function getContents(bool $includeEmpty = false) : array{
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$contents = $this->actualInventory->getContents($includeEmpty);
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foreach($this->changedSlots as $index => $item){
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if($item !== null){
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if($includeEmpty || !$item->isNull()){
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$contents[$index] = clone $item;
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}else{
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unset($contents[$index]);
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}
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}
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}
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return $contents;
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}
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/**
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* @return SlotChangeAction[]
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*/
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public function generateActions() : array{
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$result = [];
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foreach($this->changedSlots as $index => $newItem){
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if($newItem !== null){
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$oldItem = $this->actualInventory->getItem($index);
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if(!$newItem->equalsExact($oldItem)){
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$result[] = new SlotChangeAction($this->actualInventory, $index, $oldItem, $newItem);
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}
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}
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}
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return $result;
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}
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}
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