ChunkUtils Class Reference

Static Public Member Functions
static	reorderByteArray (string $array)
static	reorderNibbleArray (string $array, string $commonValue="\0")
static	convertBiomeColors (array $array)

Member Function Documentation

convertBiomeColors()

static convertBiomeColors ( array  $array )

static

Converts pre-MCPE-1.0 biome color array to biome ID array.

Parameters

int[]

$array of biome color values

Returns

string

                                                            : string{
        $result = str_repeat("\x00", 256);
        foreach($array as $i => $color){
            $result{$i} = chr(($color >> 24) & 0xff);
        }
        return $result;
    }

reorderByteArray()

static reorderByteArray ( string  $array )

staticfinal

Re-orders a byte array (YZX -> XZY and vice versa)

Parameters

string

$array

length 4096

Returns

string length 4096

                                                                 : 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;
    }

reorderNibbleArray()

static reorderNibbleArray ( string  $array, string  $commonValue = "\x00"  )

staticfinal

Re-orders a nibble array (YZX -> XZY and vice versa)

Parameters

string	$array	length 2048
string	$commonValue	length 1 common value to fill the default array with and to expect, may improve sort time

Returns

string length 2048

                                                                                                 : 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;
    }

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The documentation for this class was generated from the following file:

• src/pocketmine/level/format/io/ChunkUtils.php