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Rewrote Location table handling on Pocket Level Format parser [due to MCEdit bug]

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This commit is contained in:
Shoghi Cervantes 2013-08-20 22:46:01 +02:00
parent 6bafcbf2a7
commit 1ca87c7ade
1 changed files with 8 additions and 26 deletions
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34
src/world/PocketChunkParser.php
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@ -38,23 +38,14 @@ class PocketChunkParser{
private function loadLocationTable(){
$this->location = array();
console("[DEBUG] Loading Chunk Location table...", true, true, 2);
$chunkCnt = 0;
for($offset = 0; $offset < 0x1000; $offset += 4){
$data = substr($this->raw, $offset, 4);
$sectors = ord($data{0});
$data = Utils::readLInt(substr($this->raw, $offset, 4));
$sectors = $data & 0xff;
if($sectors === 0){
continue;
}
$x = ord($data{1});
$z = ord($data{2});
$X = $chunkCnt % 16;
$Z = $chunkCnt >> 4;
//$unused = ord($data{3});
if(!isset($this->location[$X])){
$this->location[$X] = array();
}
$this->location[$X][$Z] = $this->getOffset($X, $Z, $sectors);
++$chunkCnt;
$sectorLocation = $data >> 8;
$this->location[$offset >> 2] = $sectorLocation * $this->sectorLength;//$this->getOffset($X, $Z, $sectors);
}
}
@ -84,17 +75,8 @@ class PocketChunkParser{
return true;
}
private function getOffsetPosition($X, $Z){
$data = substr($this->raw, ($X << 2) + ($Z << 7), 4); //$X * 4 + $Z * 128
return array(ord($data{0}), ord($data{1}), ord($data{2}), ord($data{3}));
}
private function getOffset($X, $Z, $sectors = 21){
return 0x1000 + (($X * $sectors) << 12) + (($Z * $sectors) << 16);
}
private function getOffsetLocation($X, $Z){
return $X << 2 + $Z << 7;
private function getOffset($X, $Z){
return $this->location[$X + ($Z << 5)];
}
public function getChunk($X, $Z){
@ -121,7 +103,7 @@ class PocketChunkParser{
public function parseChunk($X, $Z){
$X = (int) $X;
$Z = (int) $Z;
$offset = $this->location[$X][$Z];
$offset = $this->getOffset($X, $Z);
$len = Utils::readLInt(substr($this->raw, $offset, 4));
$offset += 4;
$chunk = array(
@ -163,7 +145,7 @@ class PocketChunkParser{
flock($fp, LOCK_EX);
foreach($this->map as $x => $d){
foreach($d as $z => $chunk){
fseek($fp, $this->location[$x][$z]);
fseek($fp, $this->getOffset($x, $z));
fwrite($fp, $this->writeChunk($x, $z), $this->chunkLength);
}
}