Help with knockback

PHP:

if(!($keytype = $this->plugin->isCrateKey($item)) || $keytype !== $type){
  $player->sendTip(str_replace(["%TYPE%"], [ucfirst($type)], Lang::$no_key));
  $player->getLevel()->addSound(new EndermanTeleportSound($player));
  $player->knockBack($player, 1, 0, 1, 1); #this part

  return;


Is there a way to change the direction the player knocks back to?

 

Yes you can. One of those method parameters must be direction vector.

 

Could you tell me which one

 

PHP:

$dirvector=$player->getDirectionVector();
$dx=$dirvector->getX();
$dz=$dirvector->getZ();