pocketmine\block\RedSandstoneSlab::place PHP Метод

    public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null)
    {
        if ($face === 0) {
            if ($target->getId() === self::RED_SANDSTONE_SLAB and ($target->getDamage() & 0x8) === 0x8) {
                $this->getLevel()->setBlock($target, Block::get(Item::DOUBLE_RED_SANDSTONE_SLAB, $this->meta), true);
                return true;
            } elseif ($block->getId() === self::RED_SANDSTONE_SLAB) {
                $this->getLevel()->setBlock($block, Block::get(Item::DOUBLE_RED_SANDSTONE_SLAB, $this->meta), true);
                return true;
            } else {
                $this->meta |= 0x8;
            }
        } elseif ($face === 1) {
            if ($target->getId() === self::RED_SANDSTONE_SLAB and ($target->getDamage() & 0x8) === 0) {
                $this->getLevel()->setBlock($target, Block::get(Item::DOUBLE_RED_SANDSTONE_SLAB, $this->meta), true);
                return true;
            } elseif ($block->getId() === self::RED_SANDSTONE_SLAB) {
                $this->getLevel()->setBlock($block, Block::get(Item::DOUBLE_RED_SANDSTONE_SLAB, $this->meta), true);
                return true;
            }
            //TODO: check for collision
        } else {
            if ($block->getId() === self::RED_SANDSTONE_SLAB) {
                $this->getLevel()->setBlock($block, Block::get(Item::DOUBLE_RED_SANDSTONE_SLAB, $this->meta), true);
            } else {
                if ($fy > 0.5) {
                    $this->meta |= 0x8;
                }
            }
        }
        if ($block->getId() === self::RED_SANDSTONE_SLAB and ($target->getDamage() & 0x7) !== ($this->meta & 0x7)) {
            return false;
        }
        $this->getLevel()->setBlock($block, $this, true, true);
        return true;
    }