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https://github.com/pmmp/PocketMine-MP.git
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98 lines
3.5 KiB
PHP
98 lines
3.5 KiB
PHP
<?php
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/*
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*
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* ____ _ _ __ __ _ __ __ ____
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* | _ \ ___ ___| | _____| |_| \/ (_)_ __ ___ | \/ | _ \
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* | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
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* | __/ (_) | (__| < __/ |_| | | | | | | | __/_____| | | | __/
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* |_| \___/ \___|_|\_\___|\__|_| |_|_|_| |_|\___| |_| |_|_|
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* @author PocketMine Team
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* @link http://www.pocketmine.net/
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*
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*
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*/
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declare(strict_types=1);
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namespace pocketmine\world\light;
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use pocketmine\world\utils\SubChunkExplorer;
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use pocketmine\world\World;
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use function max;
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class SkyLightUpdate extends LightUpdate{
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/**
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* @var \SplFixedArray|bool[]
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* @phpstan-var \SplFixedArray<bool>
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*/
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private $directSkyLightBlockers;
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/**
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* @param \SplFixedArray|int[] $lightFilters
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* @param \SplFixedArray|bool[] $directSkyLightBlockers
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* @phpstan-param \SplFixedArray<int> $lightFilters
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* @phpstan-param \SplFixedArray<bool> $directSkyLightBlockers
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*/
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public function __construct(SubChunkExplorer $subChunkExplorer, \SplFixedArray $lightFilters, \SplFixedArray $directSkyLightBlockers){
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parent::__construct($subChunkExplorer, $lightFilters);
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$this->directSkyLightBlockers = $directSkyLightBlockers;
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}
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protected function updateLightArrayRef() : void{
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$this->currentLightArray = $this->subChunkExplorer->currentSubChunk->getBlockSkyLightArray();
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}
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protected function getEffectiveLight(int $x, int $y, int $z) : int{
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if($y >= World::Y_MAX){
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$this->subChunkExplorer->invalidate();
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return 15;
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}
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return parent::getEffectiveLight($x, $y, $z);
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}
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public function recalculateNode(int $x, int $y, int $z) : void{
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if(!$this->subChunkExplorer->moveTo($x, $y, $z, false)){
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return;
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}
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$chunk = $this->subChunkExplorer->currentChunk;
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$oldHeightMap = $chunk->getHeightMap($x & 0xf, $z & 0xf);
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$source = $this->subChunkExplorer->currentSubChunk->getFullBlock($x & 0xf, $y & 0xf, $z & 0xf);
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$yPlusOne = $y + 1;
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if($yPlusOne === $oldHeightMap){ //Block changed directly beneath the heightmap. Check if a block was removed or changed to a different light-filter.
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$newHeightMap = $chunk->recalculateHeightMapColumn($x & 0x0f, $z & 0x0f, $this->directSkyLightBlockers);
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}elseif($yPlusOne > $oldHeightMap){ //Block changed above the heightmap.
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if($this->directSkyLightBlockers[$source]){
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$chunk->setHeightMap($x & 0xf, $z & 0xf, $yPlusOne);
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$newHeightMap = $yPlusOne;
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}else{ //Block changed which has no effect on direct sky light, for example placing or removing glass.
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return;
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}
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}else{ //Block changed below heightmap
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$newHeightMap = $oldHeightMap;
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}
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if($newHeightMap > $oldHeightMap){ //Heightmap increase, block placed, remove sky light
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for($i = $y; $i >= $oldHeightMap; --$i){
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$this->setAndUpdateLight($x, $i, $z, 0); //Remove all light beneath, adjacent recalculation will handle the rest.
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}
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}elseif($newHeightMap < $oldHeightMap){ //Heightmap decrease, block changed or removed, add sky light
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for($i = $y; $i >= $newHeightMap; --$i){
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$this->setAndUpdateLight($x, $i, $z, 15);
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}
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}else{ //No heightmap change, block changed "underground"
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$this->setAndUpdateLight($x, $y, $z, max(0, $this->getHighestAdjacentLight($x, $y, $z) - $this->lightFilters[$source]));
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}
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}
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}
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