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chunkutils: remove dead legacy code

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Dylan K. Taylor 2019-07-09 14:44:01 +01:00
parent 5a2e84eb9f
commit 5f959a148f
1 changed files with 14 additions and 81 deletions
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95
src/pocketmine/world/format/io/ChunkUtils.php
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@ -24,90 +24,23 @@ declare(strict_types=1);
namespace pocketmine\world\format\io;
use function chr;
use function extension_loaded;
use function ord;
use function str_repeat;
if(!extension_loaded('pocketmine_chunkutils')){
class ChunkUtils{
class ChunkUtils{
/**
* Re-orders a byte array (YZX -> XZY and vice versa)
*
* @param string $array length 4096
*
* @return string length 4096
*/
final public static function reorderByteArray(string $array) : string{
$result = str_repeat("\x00", 4096);
if($array !== $result){
$i = 0;
for($x = 0; $x < 16; ++$x){
$zM = $x + 256;
for($z = $x; $z < $zM; $z += 16){
$yM = $z + 4096;
for($y = $z; $y < $yM; $y += 256){
$result{$i} = $array{$y};
++$i;
}
}
}
}
return $result;
/**
* Converts pre-MCPE-1.0 biome color array to biome ID array.
*
* @param int[] $array of biome color values
*
* @return string
*/
public static function convertBiomeColors(array $array) : string{
$result = str_repeat("\x00", 256);
foreach($array as $i => $color){
$result{$i} = chr(($color >> 24) & 0xff);
}
/**
* Re-orders a nibble array (YZX -> XZY and vice versa)
*
* @param string $array length 2048
* @param string $commonValue length 1 common value to fill the default array with and to expect, may improve sort time
*
* @return string length 2048
*/
final public static function reorderNibbleArray(string $array, string $commonValue = "\x00") : string{
$result = str_repeat($commonValue, 2048);
if($array !== $result){
$i = 0;
for($x = 0; $x < 8; ++$x){
for($z = 0; $z < 16; ++$z){
$zx = (($z << 3) | $x);
for($y = 0; $y < 8; ++$y){
$j = (($y << 8) | $zx);
$j80 = ($j | 0x80);
if($array{$j} === $commonValue and $array{$j80} === $commonValue){
//values are already filled
}else{
$i1 = ord($array{$j});
$i2 = ord($array{$j80});
$result{$i} = chr(($i2 << 4) | ($i1 & 0x0f));
$result{$i | 0x80} = chr(($i1 >> 4) | ($i2 & 0xf0));
}
$i++;
}
}
$i += 128;
}
}
return $result;
}
/**
* Converts pre-MCPE-1.0 biome color array to biome ID array.
*
* @param int[] $array of biome color values
*
* @return string
*/
public static function convertBiomeColors(array $array) : string{
$result = str_repeat("\x00", 256);
foreach($array as $i => $color){
$result{$i} = chr(($color >> 24) & 0xff);
}
return $result;
}
return $result;
}
}