lua.box2d.body.force
body:force()
body:force(x,y)
body:force(x,y,r)
body:force(nil,nil,r)
set body force , note that this does not return the current force and calling it without any values will clear the current force.
x,y is force applied to center mass, will be cleared if nil
r is torque , will be cleared if nil
This will replace force and acceleration and as force is applied then cleared during a step, this needs to be set for every step.