Pillage the Village (Drag and drop game?)

I was wondering if anyone knew how to break down the coding for this game step by step.

It is predominately a drag and drop game, but what I want to know how to do is, how do I drag a movie clip and be able to throw it like in this game, and cause damage to the ‘villagers’ within the game??

Basically how do I make this whole game?

Much help is appreciated thankyou.