RailConnectionInfo.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;
 
use pocketmine\data\bedrock\block\BlockLegacyMetadata;
use pocketmine\math\Facing;
 
final class RailConnectionInfo{
 
    public const FLAG_ASCEND = 1 << 24; //used to indicate direction-up
 
    public const CONNECTIONS = [
        //straights
        BlockLegacyMetadata::RAIL_STRAIGHT_NORTH_SOUTH => [
            Facing::NORTH,
            Facing::SOUTH
        ],
        BlockLegacyMetadata::RAIL_STRAIGHT_EAST_WEST => [
            Facing::EAST,
            Facing::WEST
        ],
 
        //ascending
        BlockLegacyMetadata::RAIL_ASCENDING_EAST => [
            Facing::WEST,
            Facing::EAST | self::FLAG_ASCEND
        ],
        BlockLegacyMetadata::RAIL_ASCENDING_WEST => [
            Facing::EAST,
            Facing::WEST | self::FLAG_ASCEND
        ],
        BlockLegacyMetadata::RAIL_ASCENDING_NORTH => [
            Facing::SOUTH,
            Facing::NORTH | self::FLAG_ASCEND
        ],
        BlockLegacyMetadata::RAIL_ASCENDING_SOUTH => [
            Facing::NORTH,
            Facing::SOUTH | self::FLAG_ASCEND
        ]
    ];
 
    /* extended meta values for regular rails, to allow curving */
    public const CURVE_CONNECTIONS = [
        BlockLegacyMetadata::RAIL_CURVE_SOUTHEAST => [
            Facing::SOUTH,
            Facing::EAST
        ],
        BlockLegacyMetadata::RAIL_CURVE_SOUTHWEST => [
            Facing::SOUTH,
            Facing::WEST
        ],
        BlockLegacyMetadata::RAIL_CURVE_NORTHWEST => [
            Facing::NORTH,
            Facing::WEST
        ],
        BlockLegacyMetadata::RAIL_CURVE_NORTHEAST => [
            Facing::NORTH,
            Facing::EAST
        ]
    ];
}