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

    private function generateCaveBranch(ChunkManager $level, Vector3 $chunk, Vector3 $target, $horizontalScale, $verticalScale, $horizontalAngle, $verticalAngle, int $startingNode, int $nodeAmount, Random $random)
    {
        $middle = new Vector3($chunk->getX() + 8, 0, $chunk->getZ() + 8);
        $horizontalOffset = 0;
        $verticalOffset = 0;
        if ($nodeAmount <= 0) {
            $size = 7 * 16;
            $nodeAmount = $size - $random->nextBoundedInt($size / 4);
        }
        $intersectionMode = $random->nextBoundedInt($nodeAmount / 2) + $nodeAmount / 4;
        $extraVerticalScale = $random->nextBoundedInt(6) == 0;
        if ($startingNode == -1) {
            $startingNode = $nodeAmount / 2;
            $lastNode = true;
        } else {
            $lastNode = false;
        }
        for (; $startingNode < $nodeAmount; $startingNode++) {
            $horizontalSize = 1.5 + sin($startingNode * pi() / $nodeAmount) * $horizontalScale;
            $verticalSize = $horizontalSize * $verticalScale;
            $target = $target->add(VectorMath::getDirection3D($horizontalAngle, $verticalAngle));
            if ($extraVerticalScale) {
                $verticalAngle *= 0.92;
            } else {
                $verticalScale *= 0.7;
            }
            $verticalAngle += $verticalOffset * 0.1;
            $horizontalAngle += $horizontalOffset * 0.1;
            $verticalOffset *= 0.9;
            $horizontalOffset *= 0.75;
            $verticalOffset += ($random->nextFloat() - $random->nextFloat()) * $random->nextFloat() * 2;
            $horizontalOffset += ($random->nextFloat() - $random->nextFloat()) * $random->nextFloat() * 4;
            if (!$lastNode) {
                if ($startingNode == $intersectionMode and $horizontalScale > 1 and $nodeAmount > 0) {
                    $this->generateCaveBranch($level, $chunk, $target, $random->nextFloat() * 0.5 + 0.5, 1, $horizontalAngle - pi() / 2, $verticalAngle / 3, $startingNode, $nodeAmount, new Random($random->nextInt()));
                    $this->generateCaveBranch($level, $chunk, $target, $random->nextFloat() * 0.5 + 0.5, 1, $horizontalAngle - pi() / 2, $verticalAngle / 3, $startingNode, $nodeAmount, new Random($random->nextInt()));
                    return;
                }
                if ($random->nextBoundedInt(4) == 0) {
                    continue;
                }
            }
            $xOffset = $target->getX() - $middle->getX();
            $zOffset = $target->getZ() - $middle->getZ();
            $nodesLeft = $nodeAmount - $startingNode;
            $offsetHorizontalScale = $horizontalScale + 18;
            if ($xOffset * $xOffset + $zOffset * $zOffset - $nodesLeft * $nodesLeft > $offsetHorizontalScale * $offsetHorizontalScale) {
                return;
            }
            if ($target->getX() < $middle->getX() - 16 - $horizontalSize * 2 or $target->getZ() < $middle->getZ() - 16 - $horizontalSize * 2 or $target->getX() > $middle->getX() + 16 + $horizontalSize * 2 or $target->getZ() > $middle->getZ() + 16 + $horizontalSize * 2) {
                continue;
            }
            $start = new Vector3(floor($target->getX() - $horizontalSize) - $chunk->getX() - 1, floor($target->getY() - $verticalSize) - 1, floor($target->getZ() - $horizontalSize) - $chunk->getZ() - 1);
            $end = new Vector3(floor($target->getX() + $horizontalSize) - $chunk->getX() + 1, floor($target->getY() + $verticalSize) + 1, floor($target->getZ() + $horizontalSize) - $chunk->getZ() + 1);
            $node = new CaveNode($level, $chunk, $start, $end, $target, $verticalSize, $horizontalSize);
            if ($node->canPlace()) {
                $node->place();
            }
            if ($lastNode) {
                break;
            }
        }
    }