FurnaceRecipeManager.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\crafting;
 
use pocketmine\item\Item;
use pocketmine\utils\ObjectSet;
 
final class FurnaceRecipeManager{
    protected array $furnaceRecipes = [];
 
    private array $lookupCache = [];
 
    private ObjectSet $recipeRegisteredCallbacks;
 
    public function __construct(){
        $this->recipeRegisteredCallbacks = new ObjectSet();
    }
 
    public function getRecipeRegisteredCallbacks() : ObjectSet{
        return $this->recipeRegisteredCallbacks;
    }
 
    public function getAll() : array{
        return $this->furnaceRecipes;
    }
 
    public function register(FurnaceRecipe $recipe) : void{
        $this->furnaceRecipes[] = $recipe;
        foreach($this->recipeRegisteredCallbacks as $callback){
            $callback($recipe);
        }
    }
 
    public function match(Item $input) : ?FurnaceRecipe{
        $index = $input->getStateId();
        $simpleRecipe = $this->lookupCache[$index] ?? null;
        if($simpleRecipe !== null){
            return $simpleRecipe;
        }
 
        foreach($this->furnaceRecipes as $recipe){
            if($recipe->getInput()->accepts($input)){
                //remember that this item is accepted by this recipe, so we don't need to bruteforce it again
                $this->lookupCache[$index] = $recipe;
                return $recipe;
            }
        }
 
        return null;
    }
}