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Automatic recovery of corrupted maps

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This commit is contained in:
Shoghi Cervantes 2013-08-18 21:31:47 +02:00
parent 4f1ce9adee
commit 39658ef63f
1 changed files with 15 additions and 4 deletions
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19
src/pmf/Level.php
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@ -147,11 +147,22 @@ class PMFLevel extends PMF{
if(($this->levelData["width"] !== 16 and $this->levelData["width"] !== 32) or $this->levelData["height"] !== 8){
return false;
}
$this->levelData["extra"] = gzinflate($this->read(Utils::readShort($this->read(2), false))); //Additional custom plugin data
if($this->levelData["extra"] === false){
return false;
$lastseek = ftell($this->fp);
if(($len = $this->read(2)) === false or ($this->levelData["extra"] = @gzinflate($this->read(Utils::readShort($len, false)))) === false){ //Corruption protection
console("[NOTICE] Empty/corrupt location table detected, forcing recovery");
fseek($this->fp, $lastseek);
$c = gzdeflate("");
$this->write(Utils::writeShort(strlen($c)).$c);
$this->payloadOffset = ftell($this->fp);
$this->levelData["extra"] = "";
$cnt = pow($this->levelData["width"], 2);
for($index = 0; $index < $cnt; ++$index){
$this->write("\x00\xFF"); //Force index recreation
}
fseek($this->fp, $this->payloadOffset);
}else{
$this->payloadOffset = ftell($this->fp);
}
$this->payloadOffset = ftell($this->fp);
return $this->readLocationTable();
}