tru, but then it doesn't know what angle to orient the model. you need at least three. verlet integrator is simple. see the 'make my game' topic in the begginer area. Near the end, my first code example might give you a tentativ step. One proble is the usage of blitz collisions. unless you do it right, it'll look like friction even when you aren't trying to add friction. another problem is making it so that you don't go sideways. You can probably do it by multiplying the motion of the verlets by the inverse squareroot of the normal representing the player's facing. Okay, I just mayd that up bu tit might work-I would try it.