[Question]How to get started with vsro petfilter

So i was wondering if anyone knew how to get started with a pet filter,
I was going to start to do it for one server and maybe just see if it can be transfered throughout other server or whatever..

You have to parse spawn packets for items on ground ;
you should handle grab pet and distance between you and item
and send collect packet and wait until item is gained.
Simple to say , hard to make.