mirror of
https://github.com/pmmp/PocketMine-MP.git
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This should solve issues with people making GitHub PRs and having the web editor messing things up. GitHub Web Editor sucks :(
109 lines
2.7 KiB
PHP
109 lines
2.7 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\level\format\io;
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if(!extension_loaded('pocketmine_chunkutils')){
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class ChunkUtils{
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/**
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* Re-orders a byte array (YZX -> XZY and vice versa)
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*
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* @param string $array length 4096
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*
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* @return string length 4096
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*/
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final public static function reorderByteArray(string $array) : string{
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$result = str_repeat("\x00", 4096);
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if($array !== $result){
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$i = 0;
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for($x = 0; $x < 16; ++$x){
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$zM = $x + 256;
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for($z = $x; $z < $zM; $z += 16){
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$yM = $z + 4096;
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for($y = $z; $y < $yM; $y += 256){
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$result{$i} = $array{$y};
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++$i;
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}
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}
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}
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}
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return $result;
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}
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/**
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* Re-orders a nibble array (YZX -> XZY and vice versa)
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*
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* @param string $array length 2048
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* @param string $commonValue length 1 common value to fill the default array with and to expect, may improve sort time
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*
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* @return string length 2048
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*/
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final public static function reorderNibbleArray(string $array, string $commonValue = "\x00") : string{
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$result = str_repeat($commonValue, 2048);
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if($array !== $result){
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$i = 0;
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for($x = 0; $x < 8; ++$x){
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for($z = 0; $z < 16; ++$z){
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$zx = (($z << 3) | $x);
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for($y = 0; $y < 8; ++$y){
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$j = (($y << 8) | $zx);
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$j80 = ($j | 0x80);
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if($array{$j} === $commonValue and $array{$j80} === $commonValue){
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//values are already filled
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}else{
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$i1 = ord($array{$j});
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$i2 = ord($array{$j80});
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$result{$i} = chr(($i2 << 4) | ($i1 & 0x0f));
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$result{$i | 0x80} = chr(($i1 >> 4) | ($i2 & 0xf0));
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}
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$i++;
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}
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}
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$i += 128;
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}
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}
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return $result;
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}
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/**
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* Converts pre-MCPE-1.0 biome color array to biome ID array.
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*
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* @param int[] $array of biome color values
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*
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* @return string
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*/
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public static function convertBiomeColors(array $array) : string{
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$result = str_repeat("\x00", 256);
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foreach($array as $i => $color){
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$result{$i} = chr(($color >> 24) & 0xff);
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}
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return $result;
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}
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}
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}
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