how to regenerate chunks selected points?

how to regenerate chunks selected points?

 

I'm guessing you mean "regeneration" as in "repopulating" (aka "repop")..
(P.S. I haven't tested the code, but this should work).

PHP:

/** @var Vector3 $initial */
/** @var Vector3 $final */
/** @var Level $level */
$x = [$initial->x >> 4, $final->x >> 4];
$z = [$initial->z >> 4, $final->z >> 4];

for($x = min($x); $x <= max($x); ++$x){
    for($z = min($z); $z <= max($z); ++$z){
        if(($chunk = $level->getChunk($x, $z)) instanceof \pocketmine\level\format\Chunk) $chunk->setGenerated(false);
    }
}


 

dont work(

[10:38:05] [Server thread/CRITICAL]: Error: "Call to a member function getChunk() on unknown" (EXCEPTION) in "/WorldEditor_v1/src/plugin/WorldEditor/WorldEditorMainFolder/Builder" at line 209

function regen(&$session, &$output)
{
$pos1 = $selection[0];
$pos2 = $selection[1];
$minX = min($pos1[0], $pos2[0]);
$maxX = max($pos1[0], $pos2[0]);
$minY = min($pos1[1], $pos2[1]);
$maxY = max($pos1[1], $pos2[1]);
$minZ = min($pos1[2], $pos2[2]);
$maxZ = max($pos1[2], $pos2[2]);
/** @var Vector3 $initial */
/** @var Vector3 $final */
/** @var Level $level */
$x = [$initial->x >> 4, $final->x >> 4];
$z = [$initial->z >> 4, $final->z >> 4];
for ($x = $minX; $x <= $maxX; ++$x) {
for ($y = $minY; $y <= $maxY; ++$y) {
for ($z = $minZ; $z <= $maxZ; ++$z) {
$level->getChunk($x, $z)->setGenerated(false);
$output .= "regen region";
}
}
}
}

 

You need to $level needs to be a level object

 

^
Also, just in case getChunk()'d return null, I've added a check.