ChiseledBookshelfSlot.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\block\utils;
 
enum ChiseledBookshelfSlot : int{
    case TOP_LEFT = 0;
    case TOP_MIDDLE = 1;
    case TOP_RIGHT = 2;
    case BOTTOM_LEFT = 3;
    case BOTTOM_MIDDLE = 4;
    case BOTTOM_RIGHT = 5;
 
    private const SLOTS_PER_SHELF = 3;
 
    public static function fromBlockFaceCoordinates(float $x, float $y) : self{
        if($x < 0 || $x > 1){
            throw new \InvalidArgumentException("X must be between 0 and 1, got $x");
        }
        if($y < 0 || $y > 1){
            throw new \InvalidArgumentException("Y must be between 0 and 1, got $y");
        }
 
        $slot = ($y < 0.5 ? self::SLOTS_PER_SHELF : 0) + match(true){
            //we can't use simple maths here as the action is aligned to the 16x16 pixel grid :(
            $x < 6 / 16 => 0,
            $x < 11 / 16 => 1,
            default => 2
        };
 
        return self::from($slot);
    }
}