CreativeInventory.php

<?php
 
/*
 *
 *  ____            _        _   __  __ _                  __  __ ____
 * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
 * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
 * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
 * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * @author PocketMine Team
 * @link http://www.pocketmine.net/
 *
 *
 */
 
declare(strict_types=1);
 
namespace pocketmine\inventory;
 
use pocketmine\crafting\CraftingManagerFromDataHelper;
use pocketmine\crafting\json\ItemStackData;
use pocketmine\data\bedrock\BedrockDataFiles;
use pocketmine\item\Item;
use pocketmine\utils\DestructorCallbackTrait;
use pocketmine\utils\ObjectSet;
use pocketmine\utils\SingletonTrait;
use pocketmine\utils\Utils;
 
final class CreativeInventory{
    use SingletonTrait;
    use DestructorCallbackTrait;
 
    private array $creative = [];
 
    private ObjectSet $contentChangedCallbacks;
 
    private function __construct(){
        $this->contentChangedCallbacks = new ObjectSet();
        $creativeItems = CraftingManagerFromDataHelper::loadJsonArrayOfObjectsFile(
            BedrockDataFiles::CREATIVEITEMS_JSON,
            ItemStackData::class
        );
        foreach($creativeItems as $data){
            $item = CraftingManagerFromDataHelper::deserializeItemStack($data);
            if($item === null){
                //unknown item
                continue;
            }
            $this->add($item);
        }
    }
 
    public function clear() : void{
        $this->creative = [];
        $this->onContentChange();
    }
 
    public function getAll() : array{
        return Utils::cloneObjectArray($this->creative);
    }
 
    public function getItem(int $index) : ?Item{
        return isset($this->creative[$index]) ? clone $this->creative[$index] : null;
    }
 
    public function getItemIndex(Item $item) : int{
        foreach($this->creative as $i => $d){
            if($item->equals($d, true, false)){
                return $i;
            }
        }
 
        return -1;
    }
 
    public function add(Item $item) : void{
        $this->creative[] = clone $item;
        $this->onContentChange();
    }
 
    public function remove(Item $item) : void{
        $index = $this->getItemIndex($item);
        if($index !== -1){
            unset($this->creative[$index]);
            $this->onContentChange();
        }
    }
 
    public function contains(Item $item) : bool{
        return $this->getItemIndex($item) !== -1;
    }
 
    public function getContentChangedCallbacks() : ObjectSet{
        return $this->contentChangedCallbacks;
    }
 
    private function onContentChange() : void{
        foreach($this->contentChangedCallbacks as $callback){
            $callback();
        }
    }
}