mirror of
https://github.com/pmmp/PocketMine-MP.git
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91 lines
2.5 KiB
PHP
91 lines
2.5 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\generator\biome;
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use pocketmine\utils\Random;
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use pocketmine\world\biome\Biome;
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use pocketmine\world\biome\UnknownBiome;
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use pocketmine\world\generator\noise\Simplex;
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abstract class BiomeSelector{
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/** @var Simplex */
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private $temperature;
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/** @var Simplex */
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private $rainfall;
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/** @var Biome[]|\SplFixedArray */
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private $map = null;
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public function __construct(Random $random){
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$this->temperature = new Simplex($random, 2, 1 / 16, 1 / 512);
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$this->rainfall = new Simplex($random, 2, 1 / 16, 1 / 512);
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}
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/**
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* Lookup function called by recalculate() to determine the biome to use for this temperature and rainfall.
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*
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* @param float $temperature
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* @param float $rainfall
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*
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* @return int biome ID 0-255
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*/
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abstract protected function lookup(float $temperature, float $rainfall) : int;
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public function recalculate() : void{
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$this->map = new \SplFixedArray(64 * 64);
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for($i = 0; $i < 64; ++$i){
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for($j = 0; $j < 64; ++$j){
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$biome = Biome::getBiome($this->lookup($i / 63, $j / 63));
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if($biome instanceof UnknownBiome){
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throw new \RuntimeException("Unknown biome returned by selector with ID " . $biome->getId());
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}
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$this->map[$i + ($j << 6)] = $biome;
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}
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}
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}
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public function getTemperature($x, $z){
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return ($this->temperature->noise2D($x, $z, true) + 1) / 2;
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}
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public function getRainfall($x, $z){
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return ($this->rainfall->noise2D($x, $z, true) + 1) / 2;
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}
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/**
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* TODO: not sure on types here
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* @param int|float $x
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* @param int|float $z
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*
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* @return Biome
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*/
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public function pickBiome($x, $z) : Biome{
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$temperature = (int) ($this->getTemperature($x, $z) * 63);
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$rainfall = (int) ($this->getRainfall($x, $z) * 63);
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return $this->map[$temperature + ($rainfall << 6)];
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}
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}
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