[pfharlock]

Basically use the rules for collisions.

Gravity causes you to accelerate at roughly 11 yards per second per second.

The rule for calculating damage is....

1. both parties inflict damage on the other
2. damage is (hp*velocity(in yards per second))/100

so example, you jump from a 3 story building and happen to fall exactly 11 yards, at that point you'd be falling at 11 yards per second, (there is a lookup table for falls in the basic set so you don't have to perform the calculus by hand).

lets say you have 11hp and he has 22hp.

you will do (11*11)/100 dice of damage to him

he'll do (22*11)/100 dice of damage to you

as far as whether you hit him or not, I would think use something like jump skill and include the distance modifier for the vertical distance between you and the guy you are trying to hit, if you make the roll you hit them, and if you don't you miss and connect with the ground instead.

Not sure if this will work for you or not, or if it's even what you guys were going for, so it might be way off base, but that's how I would model it just based on, "hey I jump off this building onto this other guy".