Get original itemstack of launched projectile

How can i get the original itemstack value from a launched potion for example?
i need to get also the itemmeta.

 

4thegame3 on PlayerInteractEvent, iterate over the inventory and get the first arrow/snowball/whatever projectile stack if the Action is RIGHT_CLICK_*.

On ProjectileShootEvent, get that ItemStack and save it as the Projectile's Metadata.

On EntityDamageByEntity/ProjectileHitEvent, simply get the Metadata and do whatever with the ItemStack. Moreover, remove the Metadata on ProjectileHitEvent (for cleanup)

 

fireblast709

what is the method in this case to get the itemstack

EDIT: wait, do i have to use all 3 methods?

 

4thegame3 It's one method, not three .

 

fireblast709 i dont understand..

 

4thegame3 It's one 'method' to tackle the issue at hand. I didn't mean 'java method' . You would have to listen to all events listed above (whether you listen to the damage, launch or both depends on your code)