Effect on right click

I have a plugin that i am working on which involves menus and hotbar items and I have a menu for cosmetics and i want it to give that player an effect, like when you tap down on the book it enables speed and when you click it again it disables it. How would I do that?

 

Use PlayerInteractEvent, get the item player interacts with, if the id is what you want give player effect. If player already has effect, remove the effect.

See these;
For effects:
https://github.com/pmmp/PocketMine-MP/blob/master/src/pocketmine/entity/Effect.php#L36

For adding effects:
https://github.com/pmmp/PocketMine-MP/blob/master/src/pocketmine/entity/Living.php#L237

For PlayerInteractEvent and getting the item:
https://github.com/pmmp/PocketMine-...mine/event/player/PlayerInteractEvent.php#L89

TIP: Always try checking the source code to find out how you can do stuff. (or use an IDE)

 

Am I missing something?

}elseif($item->getId() === Item::BOOK and stripos($item->getName(), "speed") !== false) {
$event->getPlayer()->addEffect(Effect $effect){

 

Effect $effect..?

 

Thanks