pocketmine\level\format\anvil\Anvil::isChunkGenerated PHP Метод

    public function isChunkGenerated($chunkX, $chunkZ)
    {
        if (($region = $this->getRegion($chunkX >> 5, $chunkZ >> 5)) !== null) {
            return $region->chunkExists($chunkX - $region->getX() * 32, $chunkZ - $region->getZ() * 32) and $this->getChunk($chunkX - $region->getX() * 32, $chunkZ - $region->getZ() * 32, true)->isGenerated();
        }
        return false;
    }