mirror of
https://github.com/pmmp/PocketMine-MP.git
synced 2025-09-08 02:42:58 +00:00
Removed pocketmine subdirectory, map PSR-4 style
This commit is contained in:
Dylan K. Taylor
485
src/block/Liquid.php
Normal file
485
src/block/Liquid.php
Normal file
@ -0,0 +1,485 @@
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<?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\block;
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use pocketmine\block\utils\BlockDataSerializer;
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use pocketmine\entity\Entity;
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use pocketmine\event\block\BlockFormEvent;
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use pocketmine\event\block\BlockSpreadEvent;
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use pocketmine\item\Item;
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use pocketmine\math\AxisAlignedBB;
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use pocketmine\math\Vector3;
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use pocketmine\world\sound\FizzSound;
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use pocketmine\world\sound\Sound;
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use pocketmine\world\World;
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use function array_fill;
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use function intdiv;
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use function lcg_value;
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use function min;
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abstract class Liquid extends Transparent{
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/** @var BlockIdentifierFlattened */
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protected $idInfo;
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public $adjacentSources = 0;
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/** @var Vector3|null */
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protected $flowVector = null;
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/** @var int[] */
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private $flowCostVisited = [];
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private const CAN_FLOW_DOWN = 1;
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private const CAN_FLOW = 0;
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private const BLOCKED = -1;
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/** @var bool */
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protected $falling = false;
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/** @var int */
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protected $decay = 0; //PC "level" property
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/** @var bool */
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protected $still = false;
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public function __construct(BlockIdentifierFlattened $idInfo, string $name, ?BlockBreakInfo $breakInfo = null){
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parent::__construct($idInfo, $name, $breakInfo ?? BlockBreakInfo::indestructible(500.0));
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}
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public function getId() : int{
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return $this->still ? $this->idInfo->getSecondId() : parent::getId();
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}
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protected function writeStateToMeta() : int{
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return $this->decay | ($this->falling ? BlockLegacyMetadata::LIQUID_FLAG_FALLING : 0);
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}
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public function readStateFromData(int $id, int $stateMeta) : void{
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$this->decay = BlockDataSerializer::readBoundedInt("decay", $stateMeta & 0x07, 0, 7);
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$this->falling = ($stateMeta & BlockLegacyMetadata::LIQUID_FLAG_FALLING) !== 0;
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$this->still = $id === $this->idInfo->getSecondId();
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}
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public function getStateBitmask() : int{
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return 0b1111;
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}
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public function hasEntityCollision() : bool{
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return true;
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}
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public function canBeReplaced() : bool{
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return true;
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}
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public function canBeFlowedInto() : bool{
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return true;
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}
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public function isSolid() : bool{
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return false;
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}
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protected function recalculateBoundingBox() : ?AxisAlignedBB{
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return null;
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}
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public function getDropsForCompatibleTool(Item $item) : array{
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return [];
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}
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public function getStillForm() : Block{
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$b = clone $this;
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$b->still = true;
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return $b;
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}
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public function getFlowingForm() : Block{
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$b = clone $this;
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$b->still = false;
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return $b;
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}
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abstract public function getBucketFillSound() : Sound;
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abstract public function getBucketEmptySound() : Sound;
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public function isSource() : bool{
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return !$this->falling and $this->decay === 0;
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}
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public function getFluidHeightPercent(){
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return (($this->falling ? 0 : $this->decay) + 1) / 9;
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}
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public function isStill() : bool{
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return $this->still;
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}
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/**
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* @param bool $still
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*
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* @return $this
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*/
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public function setStill(bool $still = true) : self{
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$this->still = $still;
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return $this;
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}
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protected function getEffectiveFlowDecay(Block $block) : int{
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if(!($block instanceof Liquid) or !$block->isSameType($this)){
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return -1;
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}
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return $block->falling ? 0 : $block->decay;
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}
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public function readStateFromWorld() : void{
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parent::readStateFromWorld();
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$this->flowVector = null;
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}
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public function getFlowVector() : Vector3{
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if($this->flowVector !== null){
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return $this->flowVector;
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}
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$vector = new Vector3(0, 0, 0);
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$decay = $this->getEffectiveFlowDecay($this);
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for($j = 0; $j < 4; ++$j){
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$x = $this->x;
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$y = $this->y;
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$z = $this->z;
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if($j === 0){
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--$x;
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}elseif($j === 1){
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++$x;
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}elseif($j === 2){
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--$z;
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}elseif($j === 3){
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++$z;
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}
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$sideBlock = $this->world->getBlockAt($x, $y, $z);
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$blockDecay = $this->getEffectiveFlowDecay($sideBlock);
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if($blockDecay < 0){
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if(!$sideBlock->canBeFlowedInto()){
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continue;
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}
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$blockDecay = $this->getEffectiveFlowDecay($this->world->getBlockAt($x, $y - 1, $z));
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if($blockDecay >= 0){
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$realDecay = $blockDecay - ($decay - 8);
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$vector->x += ($sideBlock->x - $this->x) * $realDecay;
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$vector->y += ($sideBlock->y - $this->y) * $realDecay;
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$vector->z += ($sideBlock->z - $this->z) * $realDecay;
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}
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continue;
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}else{
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$realDecay = $blockDecay - $decay;
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$vector->x += ($sideBlock->x - $this->x) * $realDecay;
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$vector->y += ($sideBlock->y - $this->y) * $realDecay;
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$vector->z += ($sideBlock->z - $this->z) * $realDecay;
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}
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}
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if($this->falling){
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if(
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!$this->canFlowInto($this->world->getBlockAt($this->x, $this->y, $this->z - 1)) or
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!$this->canFlowInto($this->world->getBlockAt($this->x, $this->y, $this->z + 1)) or
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!$this->canFlowInto($this->world->getBlockAt($this->x - 1, $this->y, $this->z)) or
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!$this->canFlowInto($this->world->getBlockAt($this->x + 1, $this->y, $this->z)) or
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!$this->canFlowInto($this->world->getBlockAt($this->x, $this->y + 1, $this->z - 1)) or
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!$this->canFlowInto($this->world->getBlockAt($this->x, $this->y + 1, $this->z + 1)) or
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!$this->canFlowInto($this->world->getBlockAt($this->x - 1, $this->y + 1, $this->z)) or
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!$this->canFlowInto($this->world->getBlockAt($this->x + 1, $this->y + 1, $this->z))
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){
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$vector = $vector->normalize()->add(0, -6, 0);
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}
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}
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return $this->flowVector = $vector->normalize();
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}
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public function addVelocityToEntity(Entity $entity, Vector3 $vector) : void{
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if($entity->canBeMovedByCurrents()){
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$flow = $this->getFlowVector();
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$vector->x += $flow->x;
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$vector->y += $flow->y;
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$vector->z += $flow->z;
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}
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}
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abstract public function tickRate() : int;
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/**
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* Returns how many liquid levels are lost per block flowed horizontally. Affects how far the liquid can flow.
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*
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* @return int
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*/
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public function getFlowDecayPerBlock() : int{
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return 1;
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}
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public function onNearbyBlockChange() : void{
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$this->checkForHarden();
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$this->world->scheduleDelayedBlockUpdate($this, $this->tickRate());
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}
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public function onScheduledUpdate() : void{
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$multiplier = $this->getFlowDecayPerBlock();
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if(!$this->isSource()){
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$smallestFlowDecay = -100;
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$this->adjacentSources = 0;
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$smallestFlowDecay = $this->getSmallestFlowDecay($this->world->getBlockAt($this->x, $this->y, $this->z - 1), $smallestFlowDecay);
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$smallestFlowDecay = $this->getSmallestFlowDecay($this->world->getBlockAt($this->x, $this->y, $this->z + 1), $smallestFlowDecay);
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$smallestFlowDecay = $this->getSmallestFlowDecay($this->world->getBlockAt($this->x - 1, $this->y, $this->z), $smallestFlowDecay);
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$smallestFlowDecay = $this->getSmallestFlowDecay($this->world->getBlockAt($this->x + 1, $this->y, $this->z), $smallestFlowDecay);
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$newDecay = $smallestFlowDecay + $multiplier;
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$falling = false;
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if($newDecay >= 8 or $smallestFlowDecay < 0){
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$newDecay = -1;
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}
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if($this->getEffectiveFlowDecay($this->world->getBlockAt($this->x, $this->y + 1, $this->z)) >= 0){
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$falling = true;
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}
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if($this->adjacentSources >= 2 and $this instanceof Water){
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$bottomBlock = $this->world->getBlockAt($this->x, $this->y - 1, $this->z);
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if($bottomBlock->isSolid() or ($bottomBlock instanceof Water and $bottomBlock->isSource())){
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$newDecay = 0;
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$falling = false;
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}
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}
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if($falling !== $this->falling or (!$falling and $newDecay !== $this->decay)){
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if(!$falling and $newDecay < 0){
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$this->world->setBlock($this, VanillaBlocks::AIR());
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return;
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}
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$this->falling = $falling;
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$this->decay = $falling ? 0 : $newDecay;
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$this->world->setBlock($this, $this); //local block update will cause an update to be scheduled
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}
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}
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$bottomBlock = $this->world->getBlockAt($this->x, $this->y - 1, $this->z);
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$this->flowIntoBlock($bottomBlock, 0, true);
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if($this->isSource() or !$bottomBlock->canBeFlowedInto()){
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if($this->falling){
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$adjacentDecay = 1; //falling liquid behaves like source block
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}else{
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$adjacentDecay = $this->decay + $multiplier;
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}
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if($adjacentDecay < 8){
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$flags = $this->getOptimalFlowDirections();
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if($flags[0]){
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$this->flowIntoBlock($this->world->getBlockAt($this->x - 1, $this->y, $this->z), $adjacentDecay, false);
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}
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if($flags[1]){
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$this->flowIntoBlock($this->world->getBlockAt($this->x + 1, $this->y, $this->z), $adjacentDecay, false);
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}
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if($flags[2]){
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$this->flowIntoBlock($this->world->getBlockAt($this->x, $this->y, $this->z - 1), $adjacentDecay, false);
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||||
}
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||||
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||||
if($flags[3]){
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||||
$this->flowIntoBlock($this->world->getBlockAt($this->x, $this->y, $this->z + 1), $adjacentDecay, false);
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||||
}
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||||
}
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||||
}
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||||
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||||
$this->checkForHarden();
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||||
}
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||||
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||||
protected function flowIntoBlock(Block $block, int $newFlowDecay, bool $falling) : void{
|
||||
if($this->canFlowInto($block) and !($block instanceof Liquid)){
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||||
$new = clone $this;
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||||
$new->falling = $falling;
|
||||
$new->decay = $falling ? 0 : $newFlowDecay;
|
||||
|
||||
$ev = new BlockSpreadEvent($block, $this, $new);
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||||
$ev->call();
|
||||
if(!$ev->isCancelled()){
|
||||
if($block->getId() > 0){
|
||||
$this->world->useBreakOn($block);
|
||||
}
|
||||
|
||||
$this->world->setBlock($block, $ev->getNewState());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private function calculateFlowCost(int $blockX, int $blockY, int $blockZ, int $accumulatedCost, int $maxCost, int $originOpposite, int $lastOpposite) : int{
|
||||
$cost = 1000;
|
||||
|
||||
for($j = 0; $j < 4; ++$j){
|
||||
if($j === $originOpposite or $j === $lastOpposite){
|
||||
continue;
|
||||
}
|
||||
|
||||
$x = $blockX;
|
||||
$y = $blockY;
|
||||
$z = $blockZ;
|
||||
|
||||
if($j === 0){
|
||||
--$x;
|
||||
}elseif($j === 1){
|
||||
++$x;
|
||||
}elseif($j === 2){
|
||||
--$z;
|
||||
}elseif($j === 3){
|
||||
++$z;
|
||||
}
|
||||
|
||||
if(!isset($this->flowCostVisited[$hash = World::blockHash($x, $y, $z)])){
|
||||
$blockSide = $this->world->getBlockAt($x, $y, $z);
|
||||
if(!$this->canFlowInto($blockSide)){
|
||||
$this->flowCostVisited[$hash] = self::BLOCKED;
|
||||
}elseif($this->world->getBlockAt($x, $y - 1, $z)->canBeFlowedInto()){
|
||||
$this->flowCostVisited[$hash] = self::CAN_FLOW_DOWN;
|
||||
}else{
|
||||
$this->flowCostVisited[$hash] = self::CAN_FLOW;
|
||||
}
|
||||
}
|
||||
|
||||
$status = $this->flowCostVisited[$hash];
|
||||
|
||||
if($status === self::BLOCKED){
|
||||
continue;
|
||||
}elseif($status === self::CAN_FLOW_DOWN){
|
||||
return $accumulatedCost;
|
||||
}
|
||||
|
||||
if($accumulatedCost >= $maxCost){
|
||||
continue;
|
||||
}
|
||||
|
||||
$realCost = $this->calculateFlowCost($x, $y, $z, $accumulatedCost + 1, $maxCost, $originOpposite, $j ^ 0x01);
|
||||
|
||||
if($realCost < $cost){
|
||||
$cost = $realCost;
|
||||
}
|
||||
}
|
||||
|
||||
return $cost;
|
||||
}
|
||||
|
||||
/**
|
||||
* @return bool[]
|
||||
*/
|
||||
private function getOptimalFlowDirections() : array{
|
||||
$flowCost = array_fill(0, 4, 1000);
|
||||
$maxCost = intdiv(4, $this->getFlowDecayPerBlock());
|
||||
for($j = 0; $j < 4; ++$j){
|
||||
$x = $this->x;
|
||||
$y = $this->y;
|
||||
$z = $this->z;
|
||||
|
||||
if($j === 0){
|
||||
--$x;
|
||||
}elseif($j === 1){
|
||||
++$x;
|
||||
}elseif($j === 2){
|
||||
--$z;
|
||||
}elseif($j === 3){
|
||||
++$z;
|
||||
}
|
||||
$block = $this->world->getBlockAt($x, $y, $z);
|
||||
|
||||
if(!$this->canFlowInto($block)){
|
||||
$this->flowCostVisited[World::blockHash($x, $y, $z)] = self::BLOCKED;
|
||||
continue;
|
||||
}elseif($this->world->getBlockAt($x, $y - 1, $z)->canBeFlowedInto()){
|
||||
$this->flowCostVisited[World::blockHash($x, $y, $z)] = self::CAN_FLOW_DOWN;
|
||||
$flowCost[$j] = $maxCost = 0;
|
||||
}elseif($maxCost > 0){
|
||||
$this->flowCostVisited[World::blockHash($x, $y, $z)] = self::CAN_FLOW;
|
||||
$flowCost[$j] = $this->calculateFlowCost($x, $y, $z, 1, $maxCost, $j ^ 0x01, $j ^ 0x01);
|
||||
$maxCost = min($maxCost, $flowCost[$j]);
|
||||
}
|
||||
}
|
||||
|
||||
$this->flowCostVisited = [];
|
||||
|
||||
$minCost = min($flowCost);
|
||||
|
||||
$isOptimalFlowDirection = [];
|
||||
|
||||
for($i = 0; $i < 4; ++$i){
|
||||
$isOptimalFlowDirection[$i] = ($flowCost[$i] === $minCost);
|
||||
}
|
||||
|
||||
return $isOptimalFlowDirection;
|
||||
}
|
||||
|
||||
private function getSmallestFlowDecay(Block $block, int $decay) : int{
|
||||
if(!($block instanceof Liquid) or !$block->isSameType($this)){
|
||||
return $decay;
|
||||
}
|
||||
|
||||
$blockDecay = $block->decay;
|
||||
|
||||
if($block->isSource()){
|
||||
++$this->adjacentSources;
|
||||
}elseif($block->falling){
|
||||
$blockDecay = 0;
|
||||
}
|
||||
|
||||
return ($decay >= 0 && $blockDecay >= $decay) ? $decay : $blockDecay;
|
||||
}
|
||||
|
||||
protected function checkForHarden() : void{
|
||||
|
||||
}
|
||||
|
||||
protected function liquidCollide(Block $cause, Block $result) : bool{
|
||||
$ev = new BlockFormEvent($this, $result);
|
||||
$ev->call();
|
||||
if(!$ev->isCancelled()){
|
||||
$this->world->setBlock($this, $ev->getNewState());
|
||||
$this->world->addSound($this->add(0.5, 0.5, 0.5), new FizzSound(2.6 + (lcg_value() - lcg_value()) * 0.8));
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
protected function canFlowInto(Block $block) : bool{
|
||||
return $this->world->isInWorld($block->x, $block->y, $block->z) and $block->canBeFlowedInto() and !($block instanceof Liquid and $block->isSource()); //TODO: I think this should only be liquids of the same type
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user