How to only give the attacking player points? (versus)

What i'm trying to figure out is how to give only the attacking player points,
The players are using a special vehicle i made that pretty much makes them a attacking ball

What i'm trying to do : Is to make the player who attacked the opposing player to be given points.
(And maybe even take points away from the player who was attacked.)

But is this even possible?, My second option would be to just make the players hit another object that gives points instead.

define attacking. do you mean the person who is shooting? the person who is hitting? etc

Well the player uses the vehicle as a physical force, No shooting or anything, Just basically two (or more) players hitting eachother.

I'm just trying to give the player who attacked someone points.

so basically bumper cars? :) the problem then would be that most of the time they both would be attacking. do you have something like a boost button? like in chick flick(crashy bashy was bad but this is worse!) if you do then you could have a and gate if touching another player and boosting then give that player points.

I do have a boost button, I see what you mean though, Ill try and get that working :D!

Edit, It works :D, Thanks man!