pocketmine\level\Level::updateBlockLight PHP Метод

    public function updateBlockLight(int $x, int $y, int $z)
    {
        $lightPropagationQueue = new \SplQueue();
        $lightRemovalQueue = new \SplQueue();
        $visited = [];
        $removalVisited = [];
        $oldLevel = $this->getBlockLightAt($x, $y, $z);
        $newLevel = (int) Block::$light[$this->getBlockIdAt($x, $y, $z)];
        if ($oldLevel !== $newLevel) {
            $this->setBlockLightAt($x, $y, $z, $newLevel);
            if ($newLevel < $oldLevel) {
                $removalVisited[Level::blockHash($x, $y, $z)] = true;
                $lightRemovalQueue->enqueue([new Vector3($x, $y, $z), $oldLevel]);
            } else {
                $visited[Level::blockHash($x, $y, $z)] = true;
                $lightPropagationQueue->enqueue(new Vector3($x, $y, $z));
            }
        }
        while (!$lightRemovalQueue->isEmpty()) {
            /** @var Vector3 $node */
            $val = $lightRemovalQueue->dequeue();
            $node = $val[0];
            $lightLevel = $val[1];
            $this->computeRemoveBlockLight($node->x - 1, $node->y, $node->z, $lightLevel, $lightRemovalQueue, $lightPropagationQueue, $removalVisited, $visited);
            $this->computeRemoveBlockLight($node->x + 1, $node->y, $node->z, $lightLevel, $lightRemovalQueue, $lightPropagationQueue, $removalVisited, $visited);
            $this->computeRemoveBlockLight($node->x, $node->y - 1, $node->z, $lightLevel, $lightRemovalQueue, $lightPropagationQueue, $removalVisited, $visited);
            $this->computeRemoveBlockLight($node->x, $node->y + 1, $node->z, $lightLevel, $lightRemovalQueue, $lightPropagationQueue, $removalVisited, $visited);
            $this->computeRemoveBlockLight($node->x, $node->y, $node->z - 1, $lightLevel, $lightRemovalQueue, $lightPropagationQueue, $removalVisited, $visited);
            $this->computeRemoveBlockLight($node->x, $node->y, $node->z + 1, $lightLevel, $lightRemovalQueue, $lightPropagationQueue, $removalVisited, $visited);
        }
        while (!$lightPropagationQueue->isEmpty()) {
            /** @var Vector3 $node */
            $node = $lightPropagationQueue->dequeue();
            $lightLevel = $this->getBlockLightAt($node->x, $node->y, $node->z) - (int) Block::$lightFilter[$this->getBlockIdAt($node->x, $node->y, $node->z)];
            if ($lightLevel >= 1) {
                $this->computeSpreadBlockLight($node->x - 1, $node->y, $node->z, $lightLevel, $lightPropagationQueue, $visited);
                $this->computeSpreadBlockLight($node->x + 1, $node->y, $node->z, $lightLevel, $lightPropagationQueue, $visited);
                $this->computeSpreadBlockLight($node->x, $node->y - 1, $node->z, $lightLevel, $lightPropagationQueue, $visited);
                $this->computeSpreadBlockLight($node->x, $node->y + 1, $node->z, $lightLevel, $lightPropagationQueue, $visited);
                $this->computeSpreadBlockLight($node->x, $node->y, $node->z - 1, $lightLevel, $lightPropagationQueue, $visited);
                $this->computeSpreadBlockLight($node->x, $node->y, $node->z + 1, $lightLevel, $lightPropagationQueue, $visited);
            }
        }
    }