coods2region.php

<?php

declare(strict_types=1);

use pocketmine\math\Vector3;

require_once "vendor/autoload.php";

function minVector(Vector3 $v1, Vector3 $v2) : Vector3{
	return new Vector3(min($v1->x, $v2->x) >> 9, 0, min($v1->z, $v2->z) >> 9);
}

function maxVector(Vector3 $v1, Vector3 $v2) : Vector3{
	return new Vector3(max($v1->x, $v2->x) >> 9, 0, max($v1->z, $v2->z) >> 9);
}

function printRegions(Vector3 $pos1, Vector3 $pos2){
	$min = minVector($pos1, $pos2);
	$max = maxVector($pos1, $pos2);
	for($x = $min->x; $x <= $max->x; $x++){
		for($z = $min->z; $z <= $max->z; $z++){
			echo "r.$x.$z.mca" . PHP_EOL;
		}
	}
}

printRegions(new Vector3(2947, 0, 1242), new Vector3(3072, 0, 1585));