how to prevent tnt explodes from killing players

how?, and make tnt instant explodes

 

PHP:

public function onDamage(EntityDamageEvent $event)
    {
        $cause = $event->getCause();
        if($cause === EntityDamageEvent::CAUSE_BLOCK_EXPLOSION || $cause === EntityDamageEvent::CAUSE_ENTITY_EXPLOSION){
            $event->setCancelled(true);
        }
    }

I'm not sure if it's explosion by entity or by block.

For instant explode Summon PrimedTNT and remove the tnt when a player place a tnt.
And execute explode from PrimedTNT

 

thanks!

 

It should be by block if I'm not wrong


Also if you want the players to still be knocked around it's better to set the damage to 0 rather than cancel the event outright