How to reset a world

I'm trying to code a minigame right now, but I need know how to reset a full world as well

Can anyone tell me the code? :')

That's the only thing coded by @MCG76 that is propably the best. See MCG plugins with world resetting.

Create an archive of the world. Unload level, delete level, extract archive, reload level.

You can save world blocks in the text file, and create function, to load level from this text file.

Very laggy. And it is not as easy as you think.

Example code pos

Use this in the AsyncTask, because PocketMine-MP disallow to change, read files(not Config class) from out of AsyncTask.

Code:

Server::getInstance()->unloadLevel(Server::getInstance()->getLevelByName("example"));
$archive = new \ZipArchive;
$archive->open($this->getDataFolder() . "example.zip");
$archive->extractTo(Server::getInstance()->getDataPath()."worlds/");
$archive->close();
Server::getInstance()->loadLevel(Server::getInstance()->getLevelByName("example"));

PHP:

public function reset() {
//tp everybody to another world temporary
        $this->getServer()->loadLevel("Redirect");
        foreach($this->getServer()->getOnlinePlayers() as $p){
            $p->getInventory()->clearAll();
            $p->teleport($this->getServer()->getLevelByName("Redirect")->getSafeSpawn());
        }
//replace world
        $this->getServer()->unloadLevel($this->getServer()->getLevelByName("WorldToReset"));
        $path = $this->getServer()->getDataPath();
        $this->recurse_copy($path."worlds/WorldBackup",$path."worlds/WorldToReset");
        $this->getServer()->loadLevel("WorldToReset");
//tp everybody back to the world
        foreach($this->getServer()->getOnlinePlayers() as $p){
            $p->teleport($this->getServer()->getLevelByName("WorldToReset")->getSafeSpawn());
        }
    }
   
    public function recurse_copy($src,$dst) {
    $dir = opendir($src);
    @mkdir($dst);
    while(false !== ( $file = readdir($dir)) ) {
        if (( $file != '.' ) && ( $file != '..' )) {
            if ( is_dir($src . '/' . $file) ) {
                $this->recurse_copy($src . '/' . $file,$dst . '/' . $file);
            }
            else {
                copy($src . '/' . $file,$dst . '/' . $file);
            }
        }
    }
    closedir($dir);
    } 

Text file? Terrible idea.

PHP:

public static function doBackup($backupPath, $worldPath){
  $zip = new \ZipArchive;
  $zip->open($backupPath, \ZipArchive::CREATE);
  foreach(new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($worldPath)) as $file){
    if(is_file($file)) $zip->addFile($file, str_replace("\\", "/", ltrim(substr($file, strlen($worldPath)), "/\\")));
  }
}
public function resetLevel(Server $server, $levelName, $backupPath){
  $lv = $server->getLevelByName($levelName);
  if($lv === null) return false;
  $server->unloadLevel($lv);
  $worldPath = $server->getDataPath() . "worlds/" . $levelName;
  self::file_delDir($worldPath);
  mkdir($worldPath);
  $zip = new \ZipArchive;
  $zip->open($backupPath);
  $zip->extractTo($worldPath);
  $server->loadLevel($levelName);
}
public static function file_delDir($dir){
  $dir = rtrim($dir, "/\\") . "/";
  foreach(scandir($dir) as $file){
    if($file === "." or $file === ".."){
      continue;
    }
    $path = $dir . $file;
    if(is_dir($path)){
      self::dir_delete($path);
    }else{
      unlink($path);
    }
  }
  rmdir($dir);
}

Better question yet, how would you reset chunks in a world that is still loaded (if your server only has one world.

Would you just save the chunk files, unload the chunk and then replace the chunk files?

Better

maybe if i disable level saving so i can only unload and load it right?

Search the forums. @Falk has posted something pretty useful.

It looks pretty good! Can you explain with comments how it works? There are somethings that I really didn't understand

Can you explain how recurse_copy function works?

Is there even such function?

PHP:

public static function doBackup($backupPath, $worldPath){
  $zip = new \ZipArchive; // initialize a zip object
  $zip->open($backupPath, \ZipArchive::CREATE); // create the zip file at the desired path
  foreach(new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($worldPath)) as $file){ // loop through the world directory recursively
    if(is_file($file)) // don't add directories
      $zip->addFile($file, str_replace("\\", "/", ltrim(substr($file, strlen($worldPath)), "/\\"))); // add file into zip.
// The second parameter if the path of the file inside the zip.
// The str_replace is to replace the windows file separator \ into the common /.
// substr calculates the local path by removing the directory we are looping through.
  }
}
public function resetLevel(Server $server, $levelName, $backupPath){
  // attempt to unload level
  $lv = $server->getLevelByName($levelName);
  if($lv === null) return false;
  $server->unloadLevel($lv);
  // delete worlds
  $worldPath = $server->getDataPath() . "worlds/" . $levelName;
  self::file_delDir($worldPath);
  // make new world directory
  mkdir($worldPath);
  // extract zip file into world path
  $zip = new \ZipArchive;
  $zip->open($backupPath);
  $zip->extractTo($worldPath);
  // reload level
  $server->loadLevel($levelName);
}
public static function file_delDir($dir){
  // clean the directory name to ensure it is suffixed with /
  $dir = rtrim($dir, "/\\") . "/";
  // Loop through the files and directories in this directory, NOT recursively
  foreach(scandir($dir) as $file){
    // ignore these two evil sources of bugs
    if($file === "." or $file === ".."){
      continue;
    }
    // calculate the real path of the file
    $path = $dir . $file;
    // use recursive functions go delete the child directory cleanly
    if(is_dir($path)){
      self::dir_delete($path);
    }else{
      // otherwise, simply delete the file.
      unlink($path);
    }
  }
  // remove directory. This function only works when the directory is empty.
  rmdir($dir);
}

It don't work, we can't be teleport to the world after reseting.

I use ManyWorld and it say "No world with the name .......... exists!"

ManyWorlds might load the worlds into an array when it's enabled so it isn't constantly checking the worlds folder (Not sure in this, I haven't used ManyWorlds or looked through it's source). I'd suggest you just make your own plugin to teleport players between worlds as, it can eliminate other issues you may come across.

I've correct the bug now it work