pocketmine\level\generator\populator\Cave::pop PHP Метод

    private function pop(ChunkManager $level, $x, $z, $chunkX, $chunkZ, Random $random)
    {
        $c = $level->getChunk($x, $z);
        $oC = $level->getChunk($chunkX, $chunkZ);
        if ($c == null or $oC == null or $c != null and !$c->isGenerated() or $oC != null and !$oC->isGenerated()) {
            return;
        }
        $chunk = new Vector3($x << 4, 0, $z << 4);
        $originChunk = new Vector3($chunkX << 4, 0, $chunkZ << 4);
        if ($random->nextBoundedInt(15) != 0) {
            return;
        }
        $numberOfCaves = $random->nextBoundedInt($random->nextBoundedInt($random->nextBoundedInt(40) + 1) + 1);
        for ($caveCount = 0; $caveCount < $numberOfCaves; $caveCount++) {
            $target = new Vector3($chunk->getX() + $random->nextBoundedInt(16), $random->nextBoundedInt($random->nextBoundedInt(120) + 8), $chunk->getZ() + $random->nextBoundedInt(16));
            $numberOfSmallCaves = 1;
            if ($random->nextBoundedInt(4) == 0) {
                $this->generateLargeCaveBranch($level, $originChunk, $target, new Random($random->nextInt()));
                $numberOfSmallCaves += $random->nextBoundedInt(4);
            }
            for ($count = 0; $count < $numberOfSmallCaves; $count++) {
                $randomHorizontalAngle = $random->nextFloat() * pi() * 2;
                $randomVerticalAngle = ($random->nextFloat() - 0.5) * 2 / 8;
                $horizontalScale = $random->nextFloat() * 2 + $random->nextFloat();
                if ($random->nextBoundedInt(10) == 0) {
                    $horizontalScale *= $random->nextFloat() * $random->nextFloat() * 3 + 1;
                }
                $this->generateCaveBranch($level, $originChunk, $target, $horizontalScale, 1, $randomHorizontalAngle, $randomVerticalAngle, 0, 0, new Random($random->nextInt()));
            }
        }
    }