How to detect that an item hit the ground?

Hi there,

i m working to improve an existing plugin by doing some events when an egg , a snow ball or an arrow hits the ground.
I searched in this forum and in bukkit documentation but i didn t find (or maybe i missed something) anything that can help me.
I'm lookink at "BlockPhysicsEvent" but i'm not sure it can help me, and "BlockDamageEvent" but i think projectile do not damage "blocks" .

Someone has an idea ?

Thx!

Oops the question was already posted
http://forums.bukkit.org/threads/hook-arrow-hitting-block.3385/
Is it impossible for eggs and snowballs too??

EDIT by Moderator: merged posts, please use the edit button instead of double posting.