Very helpful I was having this exact problem with many scripts i pulled from the old runuo repository. Thank you.
Converting IDamageable to Mobile
Summary of the tutoriali have seen much confusion regarding the replacement of Mobile with IDamageable, specifically when referencing Combatant in the Mobile class.
First off, with certain items being attackable on EA Servers, this change was inevitable. The good news is, converting IDamageable to Mobile is easy as the Mobile class is IDamageable. 99% of all references IDamagable instances are actually mobiles, so we just need to figure out how to convert them.