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123 lines
3.8 KiB
PHP
123 lines
3.8 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\generator\object;
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use pocketmine\block\Block;
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use pocketmine\block\Leaves;
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use pocketmine\block\Sapling;
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use pocketmine\block\VanillaBlocks;
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use pocketmine\utils\Random;
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use pocketmine\world\BlockTransaction;
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use pocketmine\world\ChunkManager;
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use function abs;
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abstract class Tree{
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/** @var Block */
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protected $trunkBlock;
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/** @var Block */
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protected $leafBlock;
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/** @var int */
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protected $treeHeight;
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public function __construct(Block $trunkBlock, Block $leafBlock, int $treeHeight = 7){
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$this->trunkBlock = $trunkBlock;
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$this->leafBlock = $leafBlock;
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$this->treeHeight = $treeHeight;
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}
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public function canPlaceObject(ChunkManager $world, int $x, int $y, int $z, Random $random) : bool{
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$radiusToCheck = 0;
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for($yy = 0; $yy < $this->treeHeight + 3; ++$yy){
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if($yy === 1 || $yy === $this->treeHeight){
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++$radiusToCheck;
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}
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for($xx = -$radiusToCheck; $xx < ($radiusToCheck + 1); ++$xx){
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for($zz = -$radiusToCheck; $zz < ($radiusToCheck + 1); ++$zz){
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if(!$this->canOverride($world->getBlockAt($x + $xx, $y + $yy, $z + $zz))){
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return false;
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}
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}
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}
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}
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return true;
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}
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/**
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* Returns the BlockTransaction containing all the blocks the tree would change upon growing at the given coordinates
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* or null if the tree can't be grown
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*/
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public function getBlockTransaction(ChunkManager $world, int $x, int $y, int $z, Random $random) : ?BlockTransaction{
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if(!$this->canPlaceObject($world, $x, $y, $z, $random)){
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return null;
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}
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$transaction = new BlockTransaction($world);
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$this->placeTrunk($x, $y, $z, $random, $this->generateTrunkHeight($random), $transaction);
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$this->placeCanopy($x, $y, $z, $random, $transaction);
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return $transaction;
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}
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protected function generateTrunkHeight(Random $random) : int{
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return $this->treeHeight - 1;
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}
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protected function placeTrunk(int $x, int $y, int $z, Random $random, int $trunkHeight, BlockTransaction $transaction) : void{
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// The base dirt block
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$transaction->addBlockAt($x, $y - 1, $z, VanillaBlocks::DIRT());
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for($yy = 0; $yy < $trunkHeight; ++$yy){
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if($this->canOverride($transaction->fetchBlockAt($x, $y + $yy, $z))){
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$transaction->addBlockAt($x, $y + $yy, $z, $this->trunkBlock);
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}
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}
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}
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protected function placeCanopy(int $x, int $y, int $z, Random $random, BlockTransaction $transaction) : void{
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for($yy = $y - 3 + $this->treeHeight; $yy <= $y + $this->treeHeight; ++$yy){
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$yOff = $yy - ($y + $this->treeHeight);
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$mid = (int) (1 - $yOff / 2);
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for($xx = $x - $mid; $xx <= $x + $mid; ++$xx){
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$xOff = abs($xx - $x);
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for($zz = $z - $mid; $zz <= $z + $mid; ++$zz){
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$zOff = abs($zz - $z);
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if($xOff === $mid && $zOff === $mid && ($yOff === 0 || $random->nextBoundedInt(2) === 0)){
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continue;
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}
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if(!$transaction->fetchBlockAt($xx, $yy, $zz)->isSolid()){
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$transaction->addBlockAt($xx, $yy, $zz, $this->leafBlock);
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}
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}
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}
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}
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}
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protected function canOverride(Block $block) : bool{
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return $block->canBeReplaced() || $block instanceof Sapling || $block instanceof Leaves;
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}
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}
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