Hey batta batta!..swing!

Hi im recently working on a new game called paranoia project,like the anime the character runz around in a city or what not on a roller blade hitting unsuspecting victomz wit a golden bat as you go about the city. I managed to get my character moving around but cant seem to get him to swing his bat around earning points? Itz not a platformer or text based type of game more of an action/ adventure runabout. HOME RUN BERBaY!! Yooshhh :fight:!!

any ideas to help get this character hit a home run?